diff options
Diffstat (limited to 'drivers/gpu/drm/tinydrm')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/Kconfig | 87 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/Makefile | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/Makefile | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 207 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 179 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/hx8357d.c | 304 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/ili9225.c | 467 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/ili9341.c | 266 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/mi0283qt.c | 293 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/mipi-dbi.c | 1175 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/repaper.c | 1165 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/st7586.c | 442 | ||||
| -rw-r--r-- | drivers/gpu/drm/tinydrm/st7735r.c | 245 |
13 files changed, 0 insertions, 4848 deletions
diff --git a/drivers/gpu/drm/tinydrm/Kconfig b/drivers/gpu/drm/tinydrm/Kconfig deleted file mode 100644 index 87819c82bcce..000000000000 --- a/drivers/gpu/drm/tinydrm/Kconfig +++ /dev/null @@ -1,87 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -menuconfig DRM_TINYDRM - tristate "Support for simple displays" - depends on DRM - select DRM_KMS_HELPER - select DRM_KMS_CMA_HELPER - help - Choose this option if you have a tinydrm supported display. - If M is selected the module will be called tinydrm. - -config TINYDRM_MIPI_DBI - tristate - -config TINYDRM_HX8357D - tristate "DRM support for HX8357D display panels" - depends on DRM_TINYDRM && SPI - depends on BACKLIGHT_CLASS_DEVICE - select TINYDRM_MIPI_DBI - help - DRM driver for the following HX8357D panels: - * YX350HV15-T 3.5" 340x350 TFT (Adafruit 3.5") - - If M is selected the module will be called hx8357d. - -config TINYDRM_ILI9225 - tristate "DRM support for ILI9225 display panels" - depends on DRM_TINYDRM && SPI - select TINYDRM_MIPI_DBI - help - DRM driver for the following Ilitek ILI9225 panels: - * No-name 2.2" color screen module - - If M is selected the module will be called ili9225. - -config TINYDRM_ILI9341 - tristate "DRM support for ILI9341 display panels" - depends on DRM_TINYDRM && SPI - depends on BACKLIGHT_CLASS_DEVICE - select TINYDRM_MIPI_DBI - help - DRM driver for the following Ilitek ILI9341 panels: - * YX240QV29-T 2.4" 240x320 TFT (Adafruit 2.4") - - If M is selected the module will be called ili9341. - -config TINYDRM_MI0283QT - tristate "DRM support for MI0283QT" - depends on DRM_TINYDRM && SPI - depends on BACKLIGHT_CLASS_DEVICE - select TINYDRM_MIPI_DBI - help - DRM driver for the Multi-Inno MI0283QT display panel - If M is selected the module will be called mi0283qt. - -config TINYDRM_REPAPER - tristate "DRM support for Pervasive Displays RePaper panels (V231)" - depends on DRM_TINYDRM && SPI - depends on THERMAL || !THERMAL - help - DRM driver for the following Pervasive Displays panels: - 1.44" TFT EPD Panel (E1144CS021) - 1.90" TFT EPD Panel (E1190CS021) - 2.00" TFT EPD Panel (E2200CS021) - 2.71" TFT EPD Panel (E2271CS021) - - If M is selected the module will be called repaper. - -config TINYDRM_ST7586 - tristate "DRM support for Sitronix ST7586 display panels" - depends on DRM_TINYDRM && SPI - select TINYDRM_MIPI_DBI - help - DRM driver for the following Sitronix ST7586 panels: - * LEGO MINDSTORMS EV3 - - If M is selected the module will be called st7586. - -config TINYDRM_ST7735R - tristate "DRM support for Sitronix ST7735R display panels" - depends on DRM_TINYDRM && SPI - depends on BACKLIGHT_CLASS_DEVICE - select TINYDRM_MIPI_DBI - help - DRM driver Sitronix ST7735R with one of the following LCDs: - * JD-T18003-T01 1.8" 128x160 TFT - - If M is selected the module will be called st7735r. diff --git a/drivers/gpu/drm/tinydrm/Makefile b/drivers/gpu/drm/tinydrm/Makefile deleted file mode 100644 index 48ec8ed9dc16..000000000000 --- a/drivers/gpu/drm/tinydrm/Makefile +++ /dev/null @@ -1,14 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_DRM_TINYDRM) += core/ - -# Controllers -obj-$(CONFIG_TINYDRM_MIPI_DBI) += mipi-dbi.o - -# Displays -obj-$(CONFIG_TINYDRM_HX8357D) += hx8357d.o -obj-$(CONFIG_TINYDRM_ILI9225) += ili9225.o -obj-$(CONFIG_TINYDRM_ILI9341) += ili9341.o -obj-$(CONFIG_TINYDRM_MI0283QT) += mi0283qt.o -obj-$(CONFIG_TINYDRM_REPAPER) += repaper.o -obj-$(CONFIG_TINYDRM_ST7586) += st7586.o -obj-$(CONFIG_TINYDRM_ST7735R) += st7735r.o diff --git a/drivers/gpu/drm/tinydrm/core/Makefile b/drivers/gpu/drm/tinydrm/core/Makefile deleted file mode 100644 index 01065e920aea..000000000000 --- a/drivers/gpu/drm/tinydrm/core/Makefile +++ /dev/null @@ -1,4 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -tinydrm-y := tinydrm-pipe.o tinydrm-helpers.o - -obj-$(CONFIG_DRM_TINYDRM) += tinydrm.o diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c deleted file mode 100644 index dfeafac4c656..000000000000 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c +++ /dev/null @@ -1,207 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2016 Noralf Trønnes - */ - -#include <linux/backlight.h> -#include <linux/dma-buf.h> -#include <linux/module.h> -#include <linux/pm.h> -#include <linux/spi/spi.h> -#include <linux/swab.h> - -#include <drm/drm_device.h> -#include <drm/drm_drv.h> -#include <drm/drm_fourcc.h> -#include <drm/drm_framebuffer.h> -#include <drm/drm_print.h> -#include <drm/drm_rect.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -static unsigned int spi_max; -module_param(spi_max, uint, 0400); -MODULE_PARM_DESC(spi_max, "Set a lower SPI max transfer size"); - -#if IS_ENABLED(CONFIG_SPI) - -/** - * tinydrm_spi_max_transfer_size - Determine max SPI transfer size - * @spi: SPI device - * @max_len: Maximum buffer size needed (optional) - * - * This function returns the maximum size to use for SPI transfers. It checks - * the SPI master, the optional @max_len and the module parameter spi_max and - * returns the smallest. - * - * Returns: - * Maximum size for SPI transfers - */ -size_t tinydrm_spi_max_transfer_size(struct spi_device *spi, size_t max_len) -{ - size_t ret; - - ret = min(spi_max_transfer_size(spi), spi->master->max_dma_len); - if (max_len) - ret = min(ret, max_len); - if (spi_max) - ret = min_t(size_t, ret, spi_max); - ret &= ~0x3; - if (ret < 4) - ret = 4; - - return ret; -} -EXPORT_SYMBOL(tinydrm_spi_max_transfer_size); - -/** - * tinydrm_spi_bpw_supported - Check if bits per word is supported - * @spi: SPI device - * @bpw: Bits per word - * - * This function checks to see if the SPI master driver supports @bpw. - * - * Returns: - * True if @bpw is supported, false otherwise. - */ -bool tinydrm_spi_bpw_supported(struct spi_device *spi, u8 bpw) -{ - u32 bpw_mask = spi->master->bits_per_word_mask; - - if (bpw == 8) - return true; - - if (!bpw_mask) { - dev_warn_once(&spi->dev, - "bits_per_word_mask not set, assume 8-bit only\n"); - return false; - } - - if (bpw_mask & SPI_BPW_MASK(bpw)) - return true; - - return false; -} -EXPORT_SYMBOL(tinydrm_spi_bpw_supported); - -static void -tinydrm_dbg_spi_print(struct spi_device *spi, struct spi_transfer *tr, - const void *buf, int idx, bool tx) -{ - u32 speed_hz = tr->speed_hz ? tr->speed_hz : spi->max_speed_hz; - char linebuf[3 * 32]; - - hex_dump_to_buffer(buf, tr->len, 16, - DIV_ROUND_UP(tr->bits_per_word, 8), - linebuf, sizeof(linebuf), false); - - printk(KERN_DEBUG - " tr(%i): speed=%u%s, bpw=%i, len=%u, %s_buf=[%s%s]\n", idx, - speed_hz > 1000000 ? speed_hz / 1000000 : speed_hz / 1000, - speed_hz > 1000000 ? "MHz" : "kHz", tr->bits_per_word, tr->len, - tx ? "tx" : "rx", linebuf, tr->len > 16 ? " ..." : ""); -} - -/* called through tinydrm_dbg_spi_message() */ -void _tinydrm_dbg_spi_message(struct spi_device *spi, struct spi_message *m) -{ - struct spi_transfer *tmp; - int i = 0; - - list_for_each_entry(tmp, &m->transfers, transfer_list) { - - if (tmp->tx_buf) - tinydrm_dbg_spi_print(spi, tmp, tmp->tx_buf, i, true); - if (tmp->rx_buf) - tinydrm_dbg_spi_print(spi, tmp, tmp->rx_buf, i, false); - i++; - } -} -EXPORT_SYMBOL(_tinydrm_dbg_spi_message); - -/** - * tinydrm_spi_transfer - SPI transfer helper - * @spi: SPI device - * @speed_hz: Override speed (optional) - * @header: Optional header transfer - * @bpw: Bits per word - * @buf: Buffer to transfer - * @len: Buffer length - * - * This SPI transfer helper breaks up the transfer of @buf into chunks which - * the SPI master driver can handle. If the machine is Little Endian and the - * SPI master driver doesn't support 16 bits per word, it swaps the bytes and - * does a 8-bit transfer. - * If @header is set, it is prepended to each SPI message. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int tinydrm_spi_transfer(struct spi_device *spi, u32 speed_hz, - struct spi_transfer *header, u8 bpw, const void *buf, - size_t len) -{ - struct spi_transfer tr = { - .bits_per_word = bpw, - .speed_hz = speed_hz, - }; - struct spi_message m; - u16 *swap_buf = NULL; - size_t max_chunk; - size_t chunk; - int ret = 0; - - if (WARN_ON_ONCE(bpw != 8 && bpw != 16)) - return -EINVAL; - - max_chunk = tinydrm_spi_max_transfer_size(spi, 0); - - if (drm_debug & DRM_UT_DRIVER) - pr_debug("[drm:%s] bpw=%u, max_chunk=%zu, transfers:\n", - __func__, bpw, max_chunk); - - if (bpw == 16 && !tinydrm_spi_bpw_supported(spi, 16)) { - tr.bits_per_word = 8; - if (tinydrm_machine_little_endian()) { - swap_buf = kmalloc(min(len, max_chunk), GFP_KERNEL); - if (!swap_buf) - return -ENOMEM; - } - } - - spi_message_init(&m); - if (header) - spi_message_add_tail(header, &m); - spi_message_add_tail(&tr, &m); - - while (len) { - chunk = min(len, max_chunk); - - tr.tx_buf = buf; - tr.len = chunk; - - if (swap_buf) { - const u16 *buf16 = buf; - unsigned int i; - - for (i = 0; i < chunk / 2; i++) - swap_buf[i] = swab16(buf16[i]); - - tr.tx_buf = swap_buf; - } - - buf += chunk; - len -= chunk; - - tinydrm_dbg_spi_message(spi, &m); - ret = spi_sync(spi, &m); - if (ret) - return ret; - } - - return 0; -} -EXPORT_SYMBOL(tinydrm_spi_transfer); - -#endif /* CONFIG_SPI */ - -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c deleted file mode 100644 index ed798fd95152..000000000000 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (C) 2016 Noralf Trønnes - */ - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_modes.h> -#include <drm/drm_probe_helper.h> -#include <drm/drm_print.h> -#include <drm/drm_simple_kms_helper.h> - -struct tinydrm_connector { - struct drm_connector base; - struct drm_display_mode mode; -}; - -static inline struct tinydrm_connector * -to_tinydrm_connector(struct drm_connector *connector) -{ - return container_of(connector, struct tinydrm_connector, base); -} - -static int tinydrm_connector_get_modes(struct drm_connector *connector) -{ - struct tinydrm_connector *tconn = to_tinydrm_connector(connector); - struct drm_display_mode *mode; - - mode = drm_mode_duplicate(connector->dev, &tconn->mode); - if (!mode) { - DRM_ERROR("Failed to duplicate mode\n"); - return 0; - } - - if (mode->name[0] == '\0') - drm_mode_set_name(mode); - - mode->type |= DRM_MODE_TYPE_PREFERRED; - drm_mode_probed_add(connector, mode); - - if (mode->width_mm) { - connector->display_info.width_mm = mode->width_mm; - connector->display_info.height_mm = mode->height_mm; - } - - return 1; -} - -static const struct drm_connector_helper_funcs tinydrm_connector_hfuncs = { - .get_modes = tinydrm_connector_get_modes, -}; - -static enum drm_connector_status -tinydrm_connector_detect(struct drm_connector *connector, bool force) -{ - if (drm_dev_is_unplugged(connector->dev)) - return connector_status_disconnected; - - return connector->status; -} - -static void tinydrm_connector_destroy(struct drm_connector *connector) -{ - struct tinydrm_connector *tconn = to_tinydrm_connector(connector); - - drm_connector_cleanup(connector); - kfree(tconn); -} - -static const struct drm_connector_funcs tinydrm_connector_funcs = { - .reset = drm_atomic_helper_connector_reset, - .detect = tinydrm_connector_detect, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = tinydrm_connector_destroy, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - -struct drm_connector * -tinydrm_connector_create(struct drm_device *drm, - const struct drm_display_mode *mode, - int connector_type) -{ - struct tinydrm_connector *tconn; - struct drm_connector *connector; - int ret; - - tconn = kzalloc(sizeof(*tconn), GFP_KERNEL); - if (!tconn) - return ERR_PTR(-ENOMEM); - - drm_mode_copy(&tconn->mode, mode); - connector = &tconn->base; - - drm_connector_helper_add(connector, &tinydrm_connector_hfuncs); - ret = drm_connector_init(drm, connector, &tinydrm_connector_funcs, - connector_type); - if (ret) { - kfree(tconn); - return ERR_PTR(ret); - } - - connector->status = connector_status_connected; - - return connector; -} - -static int tinydrm_rotate_mode(struct drm_display_mode *mode, - unsigned int rotation) -{ - if (rotation == 0 || rotation == 180) { - return 0; - } else if (rotation == 90 || rotation == 270) { - swap(mode->hdisplay, mode->vdisplay); - swap(mode->hsync_start, mode->vsync_start); - swap(mode->hsync_end, mode->vsync_end); - swap(mode->htotal, mode->vtotal); - swap(mode->width_mm, mode->height_mm); - return 0; - } else { - return -EINVAL; - } -} - -/** - * tinydrm_display_pipe_init - Initialize display pipe - * @drm: DRM device - * @pipe: Display pipe - * @funcs: Display pipe functions - * @connector_type: Connector type - * @formats: Array of supported formats (DRM_FORMAT\_\*) - * @format_count: Number of elements in @formats - * @mode: Supported mode - * @rotation: Initial @mode rotation in degrees Counter Clock Wise - * - * This function sets up a &drm_simple_display_pipe with a &drm_connector that - * has one fixed &drm_display_mode which is rotated according to @rotation. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int tinydrm_display_pipe_init(struct drm_device *drm, - struct drm_simple_display_pipe *pipe, - const struct drm_simple_display_pipe_funcs *funcs, - int connector_type, - const uint32_t *formats, - unsigned int format_count, - const struct drm_display_mode *mode, - unsigned int rotation) -{ - struct drm_display_mode mode_copy; - struct drm_connector *connector; - int ret; - static const uint64_t modifiers[] = { - DRM_FORMAT_MOD_LINEAR, - DRM_FORMAT_MOD_INVALID - }; - - drm_mode_copy(&mode_copy, mode); - ret = tinydrm_rotate_mode(&mode_copy, rotation); - if (ret) { - DRM_ERROR("Illegal rotation value %u\n", rotation); - return -EINVAL; - } - - drm->mode_config.min_width = mode_copy.hdisplay; - drm->mode_config.max_width = mode_copy.hdisplay; - drm->mode_config.min_height = mode_copy.vdisplay; - drm->mode_config.max_height = mode_copy.vdisplay; - - connector = tinydrm_connector_create(drm, &mode_copy, connector_type); - if (IS_ERR(connector)) - return PTR_ERR(connector); - - return drm_simple_display_pipe_init(drm, pipe, funcs, formats, - format_count, modifiers, connector); -} -EXPORT_SYMBOL(tinydrm_display_pipe_init); diff --git a/drivers/gpu/drm/tinydrm/hx8357d.c b/drivers/gpu/drm/tinydrm/hx8357d.c deleted file mode 100644 index 5773d0fb6ca1..000000000000 --- a/drivers/gpu/drm/tinydrm/hx8357d.c +++ /dev/null @@ -1,304 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * DRM driver for the HX8357D LCD controller - * - * Copyright 2018 Broadcom - * Copyright 2018 David Lechner <david@lechnology.com> - * Copyright 2016 Noralf Trønnes - * Copyright (C) 2015 Adafruit Industries - * Copyright (C) 2013 Christian Vogelgsang - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_modeset_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> -#include <video/mipi_display.h> - -#define HX8357D_SETOSC 0xb0 -#define HX8357D_SETPOWER 0xb1 -#define HX8357D_SETRGB 0xb3 -#define HX8357D_SETCYC 0xb3 -#define HX8357D_SETCOM 0xb6 -#define HX8357D_SETEXTC 0xb9 -#define HX8357D_SETSTBA 0xc0 -#define HX8357D_SETPANEL 0xcc -#define HX8357D_SETGAMMA 0xe0 - -#define HX8357D_MADCTL_MY 0x80 -#define HX8357D_MADCTL_MX 0x40 -#define HX8357D_MADCTL_MV 0x20 -#define HX8357D_MADCTL_ML 0x10 -#define HX8357D_MADCTL_RGB 0x00 -#define HX8357D_MADCTL_BGR 0x08 -#define HX8357D_MADCTL_MH 0x04 - -static void yx240qv29_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - u8 addr_mode; - int ret, idx; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_conditional_reset(mipi); - if (ret < 0) - goto out_exit; - if (ret == 1) - goto out_enable; - - /* setextc */ - mipi_dbi_command(mipi, HX8357D_SETEXTC, 0xFF, 0x83, 0x57); - msleep(150); - - /* setRGB which also enables SDO */ - mipi_dbi_command(mipi, HX8357D_SETRGB, 0x00, 0x00, 0x06, 0x06); - - /* -1.52V */ - mipi_dbi_command(mipi, HX8357D_SETCOM, 0x25); - - /* Normal mode 70Hz, Idle mode 55 Hz */ - mipi_dbi_command(mipi, HX8357D_SETOSC, 0x68); - - /* Set Panel - BGR, Gate direction swapped */ - mipi_dbi_command(mipi, HX8357D_SETPANEL, 0x05); - - mipi_dbi_command(mipi, HX8357D_SETPOWER, - 0x00, /* Not deep standby */ - 0x15, /* BT */ - 0x1C, /* VSPR */ - 0x1C, /* VSNR */ - 0x83, /* AP */ - 0xAA); /* FS */ - - mipi_dbi_command(mipi, HX8357D_SETSTBA, - 0x50, /* OPON normal */ - 0x50, /* OPON idle */ - 0x01, /* STBA */ - 0x3C, /* STBA */ - 0x1E, /* STBA */ - 0x08); /* GEN */ - - mipi_dbi_command(mipi, HX8357D_SETCYC, - 0x02, /* NW 0x02 */ - 0x40, /* RTN */ - 0x00, /* DIV */ - 0x2A, /* DUM */ - 0x2A, /* DUM */ - 0x0D, /* GDON */ - 0x78); /* GDOFF */ - - mipi_dbi_command(mipi, HX8357D_SETGAMMA, - 0x02, - 0x0A, - 0x11, - 0x1d, - 0x23, - 0x35, - 0x41, - 0x4b, - 0x4b, - 0x42, - 0x3A, - 0x27, - 0x1B, - 0x08, - 0x09, - 0x03, - 0x02, - 0x0A, - 0x11, - 0x1d, - 0x23, - 0x35, - 0x41, - 0x4b, - 0x4b, - 0x42, - 0x3A, - 0x27, - 0x1B, - 0x08, - 0x09, - 0x03, - 0x00, - 0x01); - - /* 16 bit */ - mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, - MIPI_DCS_PIXEL_FMT_16BIT); - - /* TE off */ - mipi_dbi_command(mipi, MIPI_DCS_SET_TEAR_ON, 0x00); - - /* tear line */ - mipi_dbi_command(mipi, MIPI_DCS_SET_TEAR_SCANLINE, 0x00, 0x02); - - /* Exit Sleep */ - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(150); - - /* display on */ - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); - usleep_range(5000, 7000); - -out_enable: - switch (mipi->rotation) { - default: - addr_mode = HX8357D_MADCTL_MX | HX8357D_MADCTL_MY; - break; - case 90: - addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MY; - break; - case 180: - addr_mode = 0; - break; - case 270: - addr_mode = HX8357D_MADCTL_MV | HX8357D_MADCTL_MX; - break; - } - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs hx8357d_pipe_funcs = { - .enable = yx240qv29_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode yx350hv15_mode = { - DRM_SIMPLE_MODE(320, 480, 60, 75), -}; - -DEFINE_DRM_GEM_CMA_FOPS(hx8357d_fops); - -static struct drm_driver hx8357d_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC, - .fops = &hx8357d_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "hx8357d", - .desc = "HX8357D", - .date = "20181023", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id hx8357d_of_match[] = { - { .compatible = "adafruit,yx350hv15" }, - { } -}; -MODULE_DEVICE_TABLE(of, hx8357d_of_match); - -static const struct spi_device_id hx8357d_id[] = { - { "yx350hv15", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, hx8357d_id); - -static int hx8357d_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &hx8357d_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); - return PTR_ERR(dc); - } - - mipi->backlight = devm_of_find_backlight(dev); - if (IS_ERR(mipi->backlight)) - return PTR_ERR(mipi->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, dc); - if (ret) - return ret; - - ret = mipi_dbi_init(mipi, &hx8357d_pipe_funcs, &yx350hv15_mode, rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int hx8357d_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void hx8357d_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver hx8357d_spi_driver = { - .driver = { - .name = "hx8357d", - .of_match_table = hx8357d_of_match, - }, - .id_table = hx8357d_id, - .probe = hx8357d_probe, - .remove = hx8357d_remove, - .shutdown = hx8357d_shutdown, -}; -module_spi_driver(hx8357d_spi_driver); - -MODULE_DESCRIPTION("HX8357D DRM driver"); -MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/ili9225.c b/drivers/gpu/drm/tinydrm/ili9225.c deleted file mode 100644 index ea69019f2f33..000000000000 --- a/drivers/gpu/drm/tinydrm/ili9225.c +++ /dev/null @@ -1,467 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * DRM driver for Ilitek ILI9225 panels - * - * Copyright 2017 David Lechner <david@lechnology.com> - * - * Some code copied from mipi-dbi.c - * Copyright 2016 Noralf Trønnes - */ - -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> -#include <video/mipi_display.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_damage_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_fourcc.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_rect.h> -#include <drm/drm_vblank.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -#define ILI9225_DRIVER_READ_CODE 0x00 -#define ILI9225_DRIVER_OUTPUT_CONTROL 0x01 -#define ILI9225_LCD_AC_DRIVING_CONTROL 0x02 -#define ILI9225_ENTRY_MODE 0x03 -#define ILI9225_DISPLAY_CONTROL_1 0x07 -#define ILI9225_BLANK_PERIOD_CONTROL_1 0x08 -#define ILI9225_FRAME_CYCLE_CONTROL 0x0b -#define ILI9225_INTERFACE_CONTROL 0x0c -#define ILI9225_OSCILLATION_CONTROL 0x0f -#define ILI9225_POWER_CONTROL_1 0x10 -#define ILI9225_POWER_CONTROL_2 0x11 -#define ILI9225_POWER_CONTROL_3 0x12 -#define ILI9225_POWER_CONTROL_4 0x13 -#define ILI9225_POWER_CONTROL_5 0x14 -#define ILI9225_VCI_RECYCLING 0x15 -#define ILI9225_RAM_ADDRESS_SET_1 0x20 -#define ILI9225_RAM_ADDRESS_SET_2 0x21 -#define ILI9225_WRITE_DATA_TO_GRAM 0x22 -#define ILI9225_SOFTWARE_RESET 0x28 -#define ILI9225_GATE_SCAN_CONTROL 0x30 -#define ILI9225_VERTICAL_SCROLL_1 0x31 -#define ILI9225_VERTICAL_SCROLL_2 0x32 -#define ILI9225_VERTICAL_SCROLL_3 0x33 -#define ILI9225_PARTIAL_DRIVING_POS_1 0x34 -#define ILI9225_PARTIAL_DRIVING_POS_2 0x35 -#define ILI9225_HORIZ_WINDOW_ADDR_1 0x36 -#define ILI9225_HORIZ_WINDOW_ADDR_2 0x37 -#define ILI9225_VERT_WINDOW_ADDR_1 0x38 -#define ILI9225_VERT_WINDOW_ADDR_2 0x39 -#define ILI9225_GAMMA_CONTROL_1 0x50 -#define ILI9225_GAMMA_CONTROL_2 0x51 -#define ILI9225_GAMMA_CONTROL_3 0x52 -#define ILI9225_GAMMA_CONTROL_4 0x53 -#define ILI9225_GAMMA_CONTROL_5 0x54 -#define ILI9225_GAMMA_CONTROL_6 0x55 -#define ILI9225_GAMMA_CONTROL_7 0x56 -#define ILI9225_GAMMA_CONTROL_8 0x57 -#define ILI9225_GAMMA_CONTROL_9 0x58 -#define ILI9225_GAMMA_CONTROL_10 0x59 - -static inline int ili9225_command(struct mipi_dbi *mipi, u8 cmd, u16 data) -{ - u8 par[2] = { data >> 8, data & 0xff }; - - return mipi_dbi_command_buf(mipi, cmd, par, 2); -} - -static void ili9225_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct mipi_dbi *mipi = drm_to_mipi_dbi(fb->dev); - unsigned int height = rect->y2 - rect->y1; - unsigned int width = rect->x2 - rect->x1; - bool swap = mipi->swap_bytes; - u16 x_start, y_start; - u16 x1, x2, y1, y2; - int idx, ret = 0; - bool full; - void *tr; - - if (!mipi->enabled) - return; - - if (!drm_dev_enter(fb->dev, &idx)) - return; - - full = width == fb->width && height == fb->height; - - DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); - - if (!mipi->dc || !full || swap || - fb->format->format == DRM_FORMAT_XRGB8888) { - tr = mipi->tx_buf; - ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, rect, swap); - if (ret) - goto err_msg; - } else { - tr = cma_obj->vaddr; - } - - switch (mipi->rotation) { - default: - x1 = rect->x1; - x2 = rect->x2 - 1; - y1 = rect->y1; - y2 = rect->y2 - 1; - x_start = x1; - y_start = y1; - break; - case 90: - x1 = rect->y1; - x2 = rect->y2 - 1; - y1 = fb->width - rect->x2; - y2 = fb->width - rect->x1 - 1; - x_start = x1; - y_start = y2; - break; - case 180: - x1 = fb->width - rect->x2; - x2 = fb->width - rect->x1 - 1; - y1 = fb->height - rect->y2; - y2 = fb->height - rect->y1 - 1; - x_start = x2; - y_start = y2; - break; - case 270: - x1 = fb->height - rect->y2; - x2 = fb->height - rect->y1 - 1; - y1 = rect->x1; - y2 = rect->x2 - 1; - x_start = x2; - y_start = y1; - break; - } - - ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_1, x2); - ili9225_command(mipi, ILI9225_HORIZ_WINDOW_ADDR_2, x1); - ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_1, y2); - ili9225_command(mipi, ILI9225_VERT_WINDOW_ADDR_2, y1); - - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, x_start); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, y_start); - - ret = mipi_dbi_command_buf(mipi, ILI9225_WRITE_DATA_TO_GRAM, tr, - width * height * 2); -err_msg: - if (ret) - dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret); - - drm_dev_exit(idx); -} - -static void ili9225_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct drm_plane_state *state = pipe->plane.state; - struct drm_crtc *crtc = &pipe->crtc; - struct drm_rect rect; - - if (drm_atomic_helper_damage_merged(old_state, state, &rect)) - ili9225_fb_dirty(state->fb, &rect); - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} - -static void ili9225_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - struct drm_framebuffer *fb = plane_state->fb; - struct device *dev = pipe->crtc.dev->dev; - struct drm_rect rect = { - .x1 = 0, - .x2 = fb->width, - .y1 = 0, - .y2 = fb->height, - }; - int ret, idx; - u8 am_id; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - mipi_dbi_hw_reset(mipi); - - /* - * There don't seem to be two example init sequences that match, so - * using the one from the popular Arduino library for this display. - * https://github.com/Nkawu/TFT_22_ILI9225/blob/master/src/TFT_22_ILI9225.cpp - */ - - ret = ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0000); - if (ret) { - DRM_DEV_ERROR(dev, "Error sending command %d\n", ret); - goto out_exit; - } - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x0000); - ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x0000); - - msleep(40); - - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0018); - ili9225_command(mipi, ILI9225_POWER_CONTROL_3, 0x6121); - ili9225_command(mipi, ILI9225_POWER_CONTROL_4, 0x006f); - ili9225_command(mipi, ILI9225_POWER_CONTROL_5, 0x495f); - ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0800); - - msleep(10); - - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x103b); - - msleep(50); - - switch (mipi->rotation) { - default: - am_id = 0x30; - break; - case 90: - am_id = 0x18; - break; - case 180: - am_id = 0x00; - break; - case 270: - am_id = 0x28; - break; - } - ili9225_command(mipi, ILI9225_DRIVER_OUTPUT_CONTROL, 0x011c); - ili9225_command(mipi, ILI9225_LCD_AC_DRIVING_CONTROL, 0x0100); - ili9225_command(mipi, ILI9225_ENTRY_MODE, 0x1000 | am_id); - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000); - ili9225_command(mipi, ILI9225_BLANK_PERIOD_CONTROL_1, 0x0808); - ili9225_command(mipi, ILI9225_FRAME_CYCLE_CONTROL, 0x1100); - ili9225_command(mipi, ILI9225_INTERFACE_CONTROL, 0x0000); - ili9225_command(mipi, ILI9225_OSCILLATION_CONTROL, 0x0d01); - ili9225_command(mipi, ILI9225_VCI_RECYCLING, 0x0020); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_1, 0x0000); - ili9225_command(mipi, ILI9225_RAM_ADDRESS_SET_2, 0x0000); - - ili9225_command(mipi, ILI9225_GATE_SCAN_CONTROL, 0x0000); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_1, 0x00db); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_2, 0x0000); - ili9225_command(mipi, ILI9225_VERTICAL_SCROLL_3, 0x0000); - ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_1, 0x00db); - ili9225_command(mipi, ILI9225_PARTIAL_DRIVING_POS_2, 0x0000); - - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_1, 0x0000); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_2, 0x0808); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_3, 0x080a); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_4, 0x000a); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_5, 0x0a08); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_6, 0x0808); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_7, 0x0000); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_8, 0x0a00); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_9, 0x0710); - ili9225_command(mipi, ILI9225_GAMMA_CONTROL_10, 0x0710); - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0012); - - msleep(50); - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x1017); - - mipi->enabled = true; - ili9225_fb_dirty(fb, &rect); -out_exit: - drm_dev_exit(idx); -} - -static void ili9225_pipe_disable(struct drm_simple_display_pipe *pipe) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - - DRM_DEBUG_KMS("\n"); - - /* - * This callback is not protected by drm_dev_enter/exit since we want to - * turn off the display on regular driver unload. It's highly unlikely - * that the underlying SPI controller is gone should this be called after - * unplug. - */ - - if (!mipi->enabled) - return; - - ili9225_command(mipi, ILI9225_DISPLAY_CONTROL_1, 0x0000); - msleep(50); - ili9225_command(mipi, ILI9225_POWER_CONTROL_2, 0x0007); - msleep(50); - ili9225_command(mipi, ILI9225_POWER_CONTROL_1, 0x0a02); - - mipi->enabled = false; -} - -static int ili9225_dbi_command(struct mipi_dbi *mipi, u8 *cmd, u8 *par, - size_t num) -{ - struct spi_device *spi = mipi->spi; - unsigned int bpw = 8; - u32 speed_hz; - int ret; - - gpiod_set_value_cansleep(mipi->dc, 0); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1); - ret = tinydrm_spi_transfer(spi, speed_hz, NULL, 8, cmd, 1); - if (ret || !num) - return ret; - - if (*cmd == ILI9225_WRITE_DATA_TO_GRAM && !mipi->swap_bytes) - bpw = 16; - - gpiod_set_value_cansleep(mipi->dc, 1); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num); - - return tinydrm_spi_transfer(spi, speed_hz, NULL, bpw, par, num); -} - -static const struct drm_simple_display_pipe_funcs ili9225_pipe_funcs = { - .enable = ili9225_pipe_enable, - .disable = ili9225_pipe_disable, - .update = ili9225_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode ili9225_mode = { - DRM_SIMPLE_MODE(176, 220, 35, 44), -}; - -DEFINE_DRM_GEM_CMA_FOPS(ili9225_fops); - -static struct drm_driver ili9225_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &ili9225_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .name = "ili9225", - .desc = "Ilitek ILI9225", - .date = "20171106", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id ili9225_of_match[] = { - { .compatible = "vot,v220hf01a-t" }, - {}, -}; -MODULE_DEVICE_TABLE(of, ili9225_of_match); - -static const struct spi_device_id ili9225_id[] = { - { "v220hf01a-t", 0 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, ili9225_id); - -static int ili9225_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *rs; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &ili9225_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - rs = devm_gpiod_get(dev, "rs", GPIOD_OUT_LOW); - if (IS_ERR(rs)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'rs'\n"); - return PTR_ERR(rs); - } - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, rs); - if (ret) - return ret; - - /* override the command function set in mipi_dbi_spi_init() */ - mipi->command = ili9225_dbi_command; - - ret = mipi_dbi_init(mipi, &ili9225_pipe_funcs, &ili9225_mode, rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int ili9225_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void ili9225_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver ili9225_spi_driver = { - .driver = { - .name = "ili9225", - .owner = THIS_MODULE, - .of_match_table = ili9225_of_match, - }, - .id_table = ili9225_id, - .probe = ili9225_probe, - .remove = ili9225_remove, - .shutdown = ili9225_shutdown, -}; -module_spi_driver(ili9225_spi_driver); - -MODULE_DESCRIPTION("Ilitek ILI9225 DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/ili9341.c b/drivers/gpu/drm/tinydrm/ili9341.c deleted file mode 100644 index 4ade9e4b924f..000000000000 --- a/drivers/gpu/drm/tinydrm/ili9341.c +++ /dev/null @@ -1,266 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * DRM driver for Ilitek ILI9341 panels - * - * Copyright 2018 David Lechner <david@lechnology.com> - * - * Based on mi0283qt.c: - * Copyright 2016 Noralf Trønnes - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_modeset_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> -#include <video/mipi_display.h> - -#define ILI9341_FRMCTR1 0xb1 -#define ILI9341_DISCTRL 0xb6 -#define ILI9341_ETMOD 0xb7 - -#define ILI9341_PWCTRL1 0xc0 -#define ILI9341_PWCTRL2 0xc1 -#define ILI9341_VMCTRL1 0xc5 -#define ILI9341_VMCTRL2 0xc7 -#define ILI9341_PWCTRLA 0xcb -#define ILI9341_PWCTRLB 0xcf - -#define ILI9341_PGAMCTRL 0xe0 -#define ILI9341_NGAMCTRL 0xe1 -#define ILI9341_DTCTRLA 0xe8 -#define ILI9341_DTCTRLB 0xea -#define ILI9341_PWRSEQ 0xed - -#define ILI9341_EN3GAM 0xf2 -#define ILI9341_PUMPCTRL 0xf7 - -#define ILI9341_MADCTL_BGR BIT(3) -#define ILI9341_MADCTL_MV BIT(5) -#define ILI9341_MADCTL_MX BIT(6) -#define ILI9341_MADCTL_MY BIT(7) - -static void yx240qv29_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - u8 addr_mode; - int ret, idx; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_conditional_reset(mipi); - if (ret < 0) - goto out_exit; - if (ret == 1) - goto out_enable; - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF); - - mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0xc1, 0x30); - mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81); - mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x00, 0x78); - mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02); - mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20); - mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00); - - /* Power Control */ - mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x23); - mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x10); - /* VCOM */ - mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x3e, 0x28); - mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0x86); - - /* Memory Access Control */ - mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT); - - /* Frame Rate */ - mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b); - - /* Gamma */ - mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x00); - mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01); - mipi_dbi_command(mipi, ILI9341_PGAMCTRL, - 0x0f, 0x31, 0x2b, 0x0c, 0x0e, 0x08, 0x4e, 0xf1, - 0x37, 0x07, 0x10, 0x03, 0x0e, 0x09, 0x00); - mipi_dbi_command(mipi, ILI9341_NGAMCTRL, - 0x00, 0x0e, 0x14, 0x03, 0x11, 0x07, 0x31, 0xc1, - 0x48, 0x08, 0x0f, 0x0c, 0x31, 0x36, 0x0f); - - /* DDRAM */ - mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07); - - /* Display */ - mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x08, 0x82, 0x27, 0x00); - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(100); - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); - msleep(100); - -out_enable: - switch (mipi->rotation) { - default: - addr_mode = ILI9341_MADCTL_MX; - break; - case 90: - addr_mode = ILI9341_MADCTL_MV; - break; - case 180: - addr_mode = ILI9341_MADCTL_MY; - break; - case 270: - addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY | - ILI9341_MADCTL_MX; - break; - } - addr_mode |= ILI9341_MADCTL_BGR; - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs ili9341_pipe_funcs = { - .enable = yx240qv29_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode yx240qv29_mode = { - DRM_SIMPLE_MODE(240, 320, 37, 49), -}; - -DEFINE_DRM_GEM_CMA_FOPS(ili9341_fops); - -static struct drm_driver ili9341_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC, - .fops = &ili9341_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "ili9341", - .desc = "Ilitek ILI9341", - .date = "20180514", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id ili9341_of_match[] = { - { .compatible = "adafruit,yx240qv29" }, - { } -}; -MODULE_DEVICE_TABLE(of, ili9341_of_match); - -static const struct spi_device_id ili9341_id[] = { - { "yx240qv29", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, ili9341_id); - -static int ili9341_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &ili9341_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); - return PTR_ERR(dc); - } - - mipi->backlight = devm_of_find_backlight(dev); - if (IS_ERR(mipi->backlight)) - return PTR_ERR(mipi->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, dc); - if (ret) - return ret; - - ret = mipi_dbi_init(mipi, &ili9341_pipe_funcs, &yx240qv29_mode, rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int ili9341_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void ili9341_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver ili9341_spi_driver = { - .driver = { - .name = "ili9341", - .of_match_table = ili9341_of_match, - }, - .id_table = ili9341_id, - .probe = ili9341_probe, - .remove = ili9341_remove, - .shutdown = ili9341_shutdown, -}; -module_spi_driver(ili9341_spi_driver); - -MODULE_DESCRIPTION("Ilitek ILI9341 DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c deleted file mode 100644 index fdefa53455d4..000000000000 --- a/drivers/gpu/drm/tinydrm/mi0283qt.c +++ /dev/null @@ -1,293 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * DRM driver for Multi-Inno MI0283QT panels - * - * Copyright 2016 Noralf Trønnes - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/regulator/consumer.h> -#include <linux/spi/spi.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_modeset_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> -#include <video/mipi_display.h> - -#define ILI9341_FRMCTR1 0xb1 -#define ILI9341_DISCTRL 0xb6 -#define ILI9341_ETMOD 0xb7 - -#define ILI9341_PWCTRL1 0xc0 -#define ILI9341_PWCTRL2 0xc1 -#define ILI9341_VMCTRL1 0xc5 -#define ILI9341_VMCTRL2 0xc7 -#define ILI9341_PWCTRLA 0xcb -#define ILI9341_PWCTRLB 0xcf - -#define ILI9341_PGAMCTRL 0xe0 -#define ILI9341_NGAMCTRL 0xe1 -#define ILI9341_DTCTRLA 0xe8 -#define ILI9341_DTCTRLB 0xea -#define ILI9341_PWRSEQ 0xed - -#define ILI9341_EN3GAM 0xf2 -#define ILI9341_PUMPCTRL 0xf7 - -#define ILI9341_MADCTL_BGR BIT(3) -#define ILI9341_MADCTL_MV BIT(5) -#define ILI9341_MADCTL_MX BIT(6) -#define ILI9341_MADCTL_MY BIT(7) - -static void mi0283qt_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - u8 addr_mode; - int ret, idx; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_conditional_reset(mipi); - if (ret < 0) - goto out_exit; - if (ret == 1) - goto out_enable; - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF); - - mipi_dbi_command(mipi, ILI9341_PWCTRLB, 0x00, 0x83, 0x30); - mipi_dbi_command(mipi, ILI9341_PWRSEQ, 0x64, 0x03, 0x12, 0x81); - mipi_dbi_command(mipi, ILI9341_DTCTRLA, 0x85, 0x01, 0x79); - mipi_dbi_command(mipi, ILI9341_PWCTRLA, 0x39, 0x2c, 0x00, 0x34, 0x02); - mipi_dbi_command(mipi, ILI9341_PUMPCTRL, 0x20); - mipi_dbi_command(mipi, ILI9341_DTCTRLB, 0x00, 0x00); - - /* Power Control */ - mipi_dbi_command(mipi, ILI9341_PWCTRL1, 0x26); - mipi_dbi_command(mipi, ILI9341_PWCTRL2, 0x11); - /* VCOM */ - mipi_dbi_command(mipi, ILI9341_VMCTRL1, 0x35, 0x3e); - mipi_dbi_command(mipi, ILI9341_VMCTRL2, 0xbe); - - /* Memory Access Control */ - mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT); - - /* Frame Rate */ - mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b); - - /* Gamma */ - mipi_dbi_command(mipi, ILI9341_EN3GAM, 0x08); - mipi_dbi_command(mipi, MIPI_DCS_SET_GAMMA_CURVE, 0x01); - mipi_dbi_command(mipi, ILI9341_PGAMCTRL, - 0x1f, 0x1a, 0x18, 0x0a, 0x0f, 0x06, 0x45, 0x87, - 0x32, 0x0a, 0x07, 0x02, 0x07, 0x05, 0x00); - mipi_dbi_command(mipi, ILI9341_NGAMCTRL, - 0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3a, 0x78, - 0x4d, 0x05, 0x18, 0x0d, 0x38, 0x3a, 0x1f); - - /* DDRAM */ - mipi_dbi_command(mipi, ILI9341_ETMOD, 0x07); - - /* Display */ - mipi_dbi_command(mipi, ILI9341_DISCTRL, 0x0a, 0x82, 0x27, 0x00); - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(100); - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); - msleep(100); - -out_enable: - /* The PiTFT (ili9340) has a hardware reset circuit that - * resets only on power-on and not on each reboot through - * a gpio like the rpi-display does. - * As a result, we need to always apply the rotation value - * regardless of the display "on/off" state. - */ - switch (mipi->rotation) { - default: - addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY | - ILI9341_MADCTL_MX; - break; - case 90: - addr_mode = ILI9341_MADCTL_MY; - break; - case 180: - addr_mode = ILI9341_MADCTL_MV; - break; - case 270: - addr_mode = ILI9341_MADCTL_MX; - break; - } - addr_mode |= ILI9341_MADCTL_BGR; - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs mi0283qt_pipe_funcs = { - .enable = mi0283qt_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode mi0283qt_mode = { - DRM_SIMPLE_MODE(320, 240, 58, 43), -}; - -DEFINE_DRM_GEM_CMA_FOPS(mi0283qt_fops); - -static struct drm_driver mi0283qt_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &mi0283qt_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "mi0283qt", - .desc = "Multi-Inno MI0283QT", - .date = "20160614", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id mi0283qt_of_match[] = { - { .compatible = "multi-inno,mi0283qt" }, - {}, -}; -MODULE_DEVICE_TABLE(of, mi0283qt_of_match); - -static const struct spi_device_id mi0283qt_id[] = { - { "mi0283qt", 0 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, mi0283qt_id); - -static int mi0283qt_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &mi0283qt_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - mipi->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - dc = devm_gpiod_get_optional(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); - return PTR_ERR(dc); - } - - mipi->regulator = devm_regulator_get(dev, "power"); - if (IS_ERR(mipi->regulator)) - return PTR_ERR(mipi->regulator); - - mipi->backlight = devm_of_find_backlight(dev); - if (IS_ERR(mipi->backlight)) - return PTR_ERR(mipi->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, dc); - if (ret) - return ret; - - ret = mipi_dbi_init(mipi, &mi0283qt_pipe_funcs, &mi0283qt_mode, rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int mi0283qt_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void mi0283qt_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static int __maybe_unused mi0283qt_pm_suspend(struct device *dev) -{ - return drm_mode_config_helper_suspend(dev_get_drvdata(dev)); -} - -static int __maybe_unused mi0283qt_pm_resume(struct device *dev) -{ - drm_mode_config_helper_resume(dev_get_drvdata(dev)); - - return 0; -} - -static const struct dev_pm_ops mi0283qt_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(mi0283qt_pm_suspend, mi0283qt_pm_resume) -}; - -static struct spi_driver mi0283qt_spi_driver = { - .driver = { - .name = "mi0283qt", - .owner = THIS_MODULE, - .of_match_table = mi0283qt_of_match, - .pm = &mi0283qt_pm_ops, - }, - .id_table = mi0283qt_id, - .probe = mi0283qt_probe, - .remove = mi0283qt_remove, - .shutdown = mi0283qt_shutdown, -}; -module_spi_driver(mi0283qt_spi_driver); - -MODULE_DESCRIPTION("Multi-Inno MI0283QT DRM driver"); -MODULE_AUTHOR("Noralf Trønnes"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c deleted file mode 100644 index ca9da654fc6f..000000000000 --- a/drivers/gpu/drm/tinydrm/mipi-dbi.c +++ /dev/null @@ -1,1175 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * MIPI Display Bus Interface (DBI) LCD controller support - * - * Copyright 2016 Noralf Trønnes - */ - -#include <linux/debugfs.h> -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/regulator/consumer.h> -#include <linux/spi/spi.h> - -#include <drm/drm_damage_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_format_helper.h> -#include <drm/drm_fourcc.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_vblank.h> -#include <drm/drm_rect.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> -#include <video/mipi_display.h> - -#define MIPI_DBI_MAX_SPI_READ_SPEED 2000000 /* 2MHz */ - -#define DCS_POWER_MODE_DISPLAY BIT(2) -#define DCS_POWER_MODE_DISPLAY_NORMAL_MODE BIT(3) -#define DCS_POWER_MODE_SLEEP_MODE BIT(4) -#define DCS_POWER_MODE_PARTIAL_MODE BIT(5) -#define DCS_POWER_MODE_IDLE_MODE BIT(6) -#define DCS_POWER_MODE_RESERVED_MASK (BIT(0) | BIT(1) | BIT(7)) - -/** - * DOC: overview - * - * This library provides helpers for MIPI Display Bus Interface (DBI) - * compatible display controllers. - * - * Many controllers for tiny lcd displays are MIPI compliant and can use this - * library. If a controller uses registers 0x2A and 0x2B to set the area to - * update and uses register 0x2C to write to frame memory, it is most likely - * MIPI compliant. - * - * Only MIPI Type 1 displays are supported since a full frame memory is needed. - * - * There are 3 MIPI DBI implementation types: - * - * A. Motorola 6800 type parallel bus - * - * B. Intel 8080 type parallel bus - * - * C. SPI type with 3 options: - * - * 1. 9-bit with the Data/Command signal as the ninth bit - * 2. Same as above except it's sent as 16 bits - * 3. 8-bit with the Data/Command signal as a separate D/CX pin - * - * Currently mipi_dbi only supports Type C options 1 and 3 with - * mipi_dbi_spi_init(). - */ - -#define MIPI_DBI_DEBUG_COMMAND(cmd, data, len) \ -({ \ - if (!len) \ - DRM_DEBUG_DRIVER("cmd=%02x\n", cmd); \ - else if (len <= 32) \ - DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, (int)len, data);\ - else \ - DRM_DEBUG_DRIVER("cmd=%02x, len=%zu\n", cmd, len); \ -}) - -static const u8 mipi_dbi_dcs_read_commands[] = { - MIPI_DCS_GET_DISPLAY_ID, - MIPI_DCS_GET_RED_CHANNEL, - MIPI_DCS_GET_GREEN_CHANNEL, - MIPI_DCS_GET_BLUE_CHANNEL, - MIPI_DCS_GET_DISPLAY_STATUS, - MIPI_DCS_GET_POWER_MODE, - MIPI_DCS_GET_ADDRESS_MODE, - MIPI_DCS_GET_PIXEL_FORMAT, - MIPI_DCS_GET_DISPLAY_MODE, - MIPI_DCS_GET_SIGNAL_MODE, - MIPI_DCS_GET_DIAGNOSTIC_RESULT, - MIPI_DCS_READ_MEMORY_START, - MIPI_DCS_READ_MEMORY_CONTINUE, - MIPI_DCS_GET_SCANLINE, - MIPI_DCS_GET_DISPLAY_BRIGHTNESS, - MIPI_DCS_GET_CONTROL_DISPLAY, - MIPI_DCS_GET_POWER_SAVE, - MIPI_DCS_GET_CABC_MIN_BRIGHTNESS, - MIPI_DCS_READ_DDB_START, - MIPI_DCS_READ_DDB_CONTINUE, - 0, /* sentinel */ -}; - -static bool mipi_dbi_command_is_read(struct mipi_dbi *mipi, u8 cmd) -{ - unsigned int i; - - if (!mipi->read_commands) - return false; - - for (i = 0; i < 0xff; i++) { - if (!mipi->read_commands[i]) - return false; - if (cmd == mipi->read_commands[i]) - return true; - } - - return false; -} - -/** - * mipi_dbi_command_read - MIPI DCS read command - * @mipi: MIPI structure - * @cmd: Command - * @val: Value read - * - * Send MIPI DCS read command to the controller. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_command_read(struct mipi_dbi *mipi, u8 cmd, u8 *val) -{ - if (!mipi->read_commands) - return -EACCES; - - if (!mipi_dbi_command_is_read(mipi, cmd)) - return -EINVAL; - - return mipi_dbi_command_buf(mipi, cmd, val, 1); -} -EXPORT_SYMBOL(mipi_dbi_command_read); - -/** - * mipi_dbi_command_buf - MIPI DCS command with parameter(s) in an array - * @mipi: MIPI structure - * @cmd: Command - * @data: Parameter buffer - * @len: Buffer length - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_command_buf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len) -{ - u8 *cmdbuf; - int ret; - - /* SPI requires dma-safe buffers */ - cmdbuf = kmemdup(&cmd, 1, GFP_KERNEL); - if (!cmdbuf) - return -ENOMEM; - - mutex_lock(&mipi->cmdlock); - ret = mipi->command(mipi, cmdbuf, data, len); - mutex_unlock(&mipi->cmdlock); - - kfree(cmdbuf); - - return ret; -} -EXPORT_SYMBOL(mipi_dbi_command_buf); - -/* This should only be used by mipi_dbi_command() */ -int mipi_dbi_command_stackbuf(struct mipi_dbi *mipi, u8 cmd, u8 *data, size_t len) -{ - u8 *buf; - int ret; - - buf = kmemdup(data, len, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - ret = mipi_dbi_command_buf(mipi, cmd, buf, len); - - kfree(buf); - - return ret; -} -EXPORT_SYMBOL(mipi_dbi_command_stackbuf); - -/** - * mipi_dbi_buf_copy - Copy a framebuffer, transforming it if necessary - * @dst: The destination buffer - * @fb: The source framebuffer - * @clip: Clipping rectangle of the area to be copied - * @swap: When true, swap MSB/LSB of 16-bit values - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_buf_copy(void *dst, struct drm_framebuffer *fb, - struct drm_rect *clip, bool swap) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; - struct drm_format_name_buf format_name; - void *src = cma_obj->vaddr; - int ret = 0; - - if (import_attach) { - ret = dma_buf_begin_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - if (ret) - return ret; - } - - switch (fb->format->format) { - case DRM_FORMAT_RGB565: - if (swap) - drm_fb_swab16(dst, src, fb, clip); - else - drm_fb_memcpy(dst, src, fb, clip); - break; - case DRM_FORMAT_XRGB8888: - drm_fb_xrgb8888_to_rgb565(dst, src, fb, clip, swap); - break; - default: - dev_err_once(fb->dev->dev, "Format is not supported: %s\n", - drm_get_format_name(fb->format->format, - &format_name)); - return -EINVAL; - } - - if (import_attach) - ret = dma_buf_end_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - return ret; -} -EXPORT_SYMBOL(mipi_dbi_buf_copy); - -static void mipi_dbi_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct mipi_dbi *mipi = drm_to_mipi_dbi(fb->dev); - unsigned int height = rect->y2 - rect->y1; - unsigned int width = rect->x2 - rect->x1; - bool swap = mipi->swap_bytes; - int idx, ret = 0; - bool full; - void *tr; - - if (!mipi->enabled) - return; - - if (!drm_dev_enter(fb->dev, &idx)) - return; - - full = width == fb->width && height == fb->height; - - DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); - - if (!mipi->dc || !full || swap || - fb->format->format == DRM_FORMAT_XRGB8888) { - tr = mipi->tx_buf; - ret = mipi_dbi_buf_copy(mipi->tx_buf, fb, rect, swap); - if (ret) - goto err_msg; - } else { - tr = cma_obj->vaddr; - } - - mipi_dbi_command(mipi, MIPI_DCS_SET_COLUMN_ADDRESS, - (rect->x1 >> 8) & 0xff, rect->x1 & 0xff, - ((rect->x2 - 1) >> 8) & 0xff, (rect->x2 - 1) & 0xff); - mipi_dbi_command(mipi, MIPI_DCS_SET_PAGE_ADDRESS, - (rect->y1 >> 8) & 0xff, rect->y1 & 0xff, - ((rect->y2 - 1) >> 8) & 0xff, (rect->y2 - 1) & 0xff); - - ret = mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, tr, - width * height * 2); -err_msg: - if (ret) - dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret); - - drm_dev_exit(idx); -} - -/** - * mipi_dbi_pipe_update - Display pipe update helper - * @pipe: Simple display pipe - * @old_state: Old plane state - * - * This function handles framebuffer flushing and vblank events. Drivers can use - * this as their &drm_simple_display_pipe_funcs->update callback. - */ -void mipi_dbi_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct drm_plane_state *state = pipe->plane.state; - struct drm_crtc *crtc = &pipe->crtc; - struct drm_rect rect; - - if (drm_atomic_helper_damage_merged(old_state, state, &rect)) - mipi_dbi_fb_dirty(state->fb, &rect); - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} -EXPORT_SYMBOL(mipi_dbi_pipe_update); - -/** - * mipi_dbi_enable_flush - MIPI DBI enable helper - * @mipi: MIPI DBI structure - * @crtc_state: CRTC state - * @plane_state: Plane state - * - * This function sets &mipi_dbi->enabled, flushes the whole framebuffer and - * enables the backlight. Drivers can use this in their - * &drm_simple_display_pipe_funcs->enable callback. - * - * Note: Drivers which don't use mipi_dbi_pipe_update() because they have custom - * framebuffer flushing, can't use this function since they both use the same - * flushing code. - */ -void mipi_dbi_enable_flush(struct mipi_dbi *mipi, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct drm_framebuffer *fb = plane_state->fb; - struct drm_rect rect = { - .x1 = 0, - .x2 = fb->width, - .y1 = 0, - .y2 = fb->height, - }; - int idx; - - if (!drm_dev_enter(&mipi->drm, &idx)) - return; - - mipi->enabled = true; - mipi_dbi_fb_dirty(fb, &rect); - backlight_enable(mipi->backlight); - - drm_dev_exit(idx); -} -EXPORT_SYMBOL(mipi_dbi_enable_flush); - -static void mipi_dbi_blank(struct mipi_dbi *mipi) -{ - struct drm_device *drm = &mipi->drm; - u16 height = drm->mode_config.min_height; - u16 width = drm->mode_config.min_width; - size_t len = width * height * 2; - int idx; - - if (!drm_dev_enter(drm, &idx)) - return; - - memset(mipi->tx_buf, 0, len); - - mipi_dbi_command(mipi, MIPI_DCS_SET_COLUMN_ADDRESS, 0, 0, - (width >> 8) & 0xFF, (width - 1) & 0xFF); - mipi_dbi_command(mipi, MIPI_DCS_SET_PAGE_ADDRESS, 0, 0, - (height >> 8) & 0xFF, (height - 1) & 0xFF); - mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, - (u8 *)mipi->tx_buf, len); - - drm_dev_exit(idx); -} - -/** - * mipi_dbi_pipe_disable - MIPI DBI pipe disable helper - * @pipe: Display pipe - * - * This function disables backlight if present, if not the display memory is - * blanked. The regulator is disabled if in use. Drivers can use this as their - * &drm_simple_display_pipe_funcs->disable callback. - */ -void mipi_dbi_pipe_disable(struct drm_simple_display_pipe *pipe) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - - if (!mipi->enabled) - return; - - DRM_DEBUG_KMS("\n"); - - mipi->enabled = false; - - if (mipi->backlight) - backlight_disable(mipi->backlight); - else - mipi_dbi_blank(mipi); - - if (mipi->regulator) - regulator_disable(mipi->regulator); -} -EXPORT_SYMBOL(mipi_dbi_pipe_disable); - -static const struct drm_mode_config_funcs mipi_dbi_mode_config_funcs = { - .fb_create = drm_gem_fb_create_with_dirty, - .atomic_check = drm_atomic_helper_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static const uint32_t mipi_dbi_formats[] = { - DRM_FORMAT_RGB565, - DRM_FORMAT_XRGB8888, -}; - -/** - * mipi_dbi_init - MIPI DBI initialization - * @mipi: &mipi_dbi structure to initialize - * @funcs: Display pipe functions - * @mode: Display mode - * @rotation: Initial rotation in degrees Counter Clock Wise - * - * This function sets up a &drm_simple_display_pipe with a &drm_connector that - * has one fixed &drm_display_mode which is rotated according to @rotation. - * This mode is used to set the mode config min/max width/height properties. - * Additionally &mipi_dbi.tx_buf is allocated. - * - * Supported formats: Native RGB565 and emulated XRGB8888. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_init(struct mipi_dbi *mipi, - const struct drm_simple_display_pipe_funcs *funcs, - const struct drm_display_mode *mode, unsigned int rotation) -{ - size_t bufsize = mode->vdisplay * mode->hdisplay * sizeof(u16); - struct drm_device *drm = &mipi->drm; - int ret; - - if (!mipi->command) - return -EINVAL; - - mutex_init(&mipi->cmdlock); - - mipi->tx_buf = devm_kmalloc(drm->dev, bufsize, GFP_KERNEL); - if (!mipi->tx_buf) - return -ENOMEM; - - /* TODO: Maybe add DRM_MODE_CONNECTOR_SPI */ - ret = tinydrm_display_pipe_init(drm, &mipi->pipe, funcs, - DRM_MODE_CONNECTOR_VIRTUAL, - mipi_dbi_formats, - ARRAY_SIZE(mipi_dbi_formats), mode, - rotation); - if (ret) - return ret; - - drm_plane_enable_fb_damage_clips(&mipi->pipe.plane); - - drm->mode_config.funcs = &mipi_dbi_mode_config_funcs; - drm->mode_config.preferred_depth = 16; - mipi->rotation = rotation; - - DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n", - drm->mode_config.preferred_depth, rotation); - - return 0; -} -EXPORT_SYMBOL(mipi_dbi_init); - -/** - * mipi_dbi_release - DRM driver release helper - * @drm: DRM device - * - * This function finalizes and frees &mipi_dbi. - * - * Drivers can use this as their &drm_driver->release callback. - */ -void mipi_dbi_release(struct drm_device *drm) -{ - struct mipi_dbi *dbi = drm_to_mipi_dbi(drm); - - DRM_DEBUG_DRIVER("\n"); - - drm_mode_config_cleanup(drm); - drm_dev_fini(drm); - kfree(dbi); -} -EXPORT_SYMBOL(mipi_dbi_release); - -/** - * mipi_dbi_hw_reset - Hardware reset of controller - * @mipi: MIPI DBI structure - * - * Reset controller if the &mipi_dbi->reset gpio is set. - */ -void mipi_dbi_hw_reset(struct mipi_dbi *mipi) -{ - if (!mipi->reset) - return; - - gpiod_set_value_cansleep(mipi->reset, 0); - usleep_range(20, 1000); - gpiod_set_value_cansleep(mipi->reset, 1); - msleep(120); -} -EXPORT_SYMBOL(mipi_dbi_hw_reset); - -/** - * mipi_dbi_display_is_on - Check if display is on - * @mipi: MIPI DBI structure - * - * This function checks the Power Mode register (if readable) to see if - * display output is turned on. This can be used to see if the bootloader - * has already turned on the display avoiding flicker when the pipeline is - * enabled. - * - * Returns: - * true if the display can be verified to be on, false otherwise. - */ -bool mipi_dbi_display_is_on(struct mipi_dbi *mipi) -{ - u8 val; - - if (mipi_dbi_command_read(mipi, MIPI_DCS_GET_POWER_MODE, &val)) - return false; - - val &= ~DCS_POWER_MODE_RESERVED_MASK; - - /* The poweron/reset value is 08h DCS_POWER_MODE_DISPLAY_NORMAL_MODE */ - if (val != (DCS_POWER_MODE_DISPLAY | - DCS_POWER_MODE_DISPLAY_NORMAL_MODE | DCS_POWER_MODE_SLEEP_MODE)) - return false; - - DRM_DEBUG_DRIVER("Display is ON\n"); - - return true; -} -EXPORT_SYMBOL(mipi_dbi_display_is_on); - -static int mipi_dbi_poweron_reset_conditional(struct mipi_dbi *mipi, bool cond) -{ - struct device *dev = mipi->drm.dev; - int ret; - - if (mipi->regulator) { - ret = regulator_enable(mipi->regulator); - if (ret) { - DRM_DEV_ERROR(dev, "Failed to enable regulator (%d)\n", ret); - return ret; - } - } - - if (cond && mipi_dbi_display_is_on(mipi)) - return 1; - - mipi_dbi_hw_reset(mipi); - ret = mipi_dbi_command(mipi, MIPI_DCS_SOFT_RESET); - if (ret) { - DRM_DEV_ERROR(dev, "Failed to send reset command (%d)\n", ret); - if (mipi->regulator) - regulator_disable(mipi->regulator); - return ret; - } - - /* - * If we did a hw reset, we know the controller is in Sleep mode and - * per MIPI DSC spec should wait 5ms after soft reset. If we didn't, - * we assume worst case and wait 120ms. - */ - if (mipi->reset) - usleep_range(5000, 20000); - else - msleep(120); - - return 0; -} - -/** - * mipi_dbi_poweron_reset - MIPI DBI poweron and reset - * @mipi: MIPI DBI structure - * - * This function enables the regulator if used and does a hardware and software - * reset. - * - * Returns: - * Zero on success, or a negative error code. - */ -int mipi_dbi_poweron_reset(struct mipi_dbi *mipi) -{ - return mipi_dbi_poweron_reset_conditional(mipi, false); -} -EXPORT_SYMBOL(mipi_dbi_poweron_reset); - -/** - * mipi_dbi_poweron_conditional_reset - MIPI DBI poweron and conditional reset - * @mipi: MIPI DBI structure - * - * This function enables the regulator if used and if the display is off, it - * does a hardware and software reset. If mipi_dbi_display_is_on() determines - * that the display is on, no reset is performed. - * - * Returns: - * Zero if the controller was reset, 1 if the display was already on, or a - * negative error code. - */ -int mipi_dbi_poweron_conditional_reset(struct mipi_dbi *mipi) -{ - return mipi_dbi_poweron_reset_conditional(mipi, true); -} -EXPORT_SYMBOL(mipi_dbi_poweron_conditional_reset); - -#if IS_ENABLED(CONFIG_SPI) - -/** - * mipi_dbi_spi_cmd_max_speed - get the maximum SPI bus speed - * @spi: SPI device - * @len: The transfer buffer length. - * - * Many controllers have a max speed of 10MHz, but can be pushed way beyond - * that. Increase reliability by running pixel data at max speed and the rest - * at 10MHz, preventing transfer glitches from messing up the init settings. - */ -u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len) -{ - if (len > 64) - return 0; /* use default */ - - return min_t(u32, 10000000, spi->max_speed_hz); -} -EXPORT_SYMBOL(mipi_dbi_spi_cmd_max_speed); - -/* - * MIPI DBI Type C Option 1 - * - * If the SPI controller doesn't have 9 bits per word support, - * use blocks of 9 bytes to send 8x 9-bit words using a 8-bit SPI transfer. - * Pad partial blocks with MIPI_DCS_NOP (zero). - * This is how the D/C bit (x) is added: - * x7654321 - * 0x765432 - * 10x76543 - * 210x7654 - * 3210x765 - * 43210x76 - * 543210x7 - * 6543210x - * 76543210 - */ - -static int mipi_dbi_spi1e_transfer(struct mipi_dbi *mipi, int dc, - const void *buf, size_t len, - unsigned int bpw) -{ - bool swap_bytes = (bpw == 16 && tinydrm_machine_little_endian()); - size_t chunk, max_chunk = mipi->tx_buf9_len; - struct spi_device *spi = mipi->spi; - struct spi_transfer tr = { - .tx_buf = mipi->tx_buf9, - .bits_per_word = 8, - }; - struct spi_message m; - const u8 *src = buf; - int i, ret; - u8 *dst; - - if (drm_debug & DRM_UT_DRIVER) - pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n", - __func__, dc, max_chunk); - - tr.speed_hz = mipi_dbi_spi_cmd_max_speed(spi, len); - spi_message_init_with_transfers(&m, &tr, 1); - - if (!dc) { - if (WARN_ON_ONCE(len != 1)) - return -EINVAL; - - /* Command: pad no-op's (zeroes) at beginning of block */ - dst = mipi->tx_buf9; - memset(dst, 0, 9); - dst[8] = *src; - tr.len = 9; - - tinydrm_dbg_spi_message(spi, &m); - - return spi_sync(spi, &m); - } - - /* max with room for adding one bit per byte */ - max_chunk = max_chunk / 9 * 8; - /* but no bigger than len */ - max_chunk = min(max_chunk, len); - /* 8 byte blocks */ - max_chunk = max_t(size_t, 8, max_chunk & ~0x7); - - while (len) { - size_t added = 0; - - chunk = min(len, max_chunk); - len -= chunk; - dst = mipi->tx_buf9; - - if (chunk < 8) { - u8 val, carry = 0; - - /* Data: pad no-op's (zeroes) at end of block */ - memset(dst, 0, 9); - - if (swap_bytes) { - for (i = 1; i < (chunk + 1); i++) { - val = src[1]; - *dst++ = carry | BIT(8 - i) | (val >> i); - carry = val << (8 - i); - i++; - val = src[0]; - *dst++ = carry | BIT(8 - i) | (val >> i); - carry = val << (8 - i); - src += 2; - } - *dst++ = carry; - } else { - for (i = 1; i < (chunk + 1); i++) { - val = *src++; - *dst++ = carry | BIT(8 - i) | (val >> i); - carry = val << (8 - i); - } - *dst++ = carry; - } - - chunk = 8; - added = 1; - } else { - for (i = 0; i < chunk; i += 8) { - if (swap_bytes) { - *dst++ = BIT(7) | (src[1] >> 1); - *dst++ = (src[1] << 7) | BIT(6) | (src[0] >> 2); - *dst++ = (src[0] << 6) | BIT(5) | (src[3] >> 3); - *dst++ = (src[3] << 5) | BIT(4) | (src[2] >> 4); - *dst++ = (src[2] << 4) | BIT(3) | (src[5] >> 5); - *dst++ = (src[5] << 3) | BIT(2) | (src[4] >> 6); - *dst++ = (src[4] << 2) | BIT(1) | (src[7] >> 7); - *dst++ = (src[7] << 1) | BIT(0); - *dst++ = src[6]; - } else { - *dst++ = BIT(7) | (src[0] >> 1); - *dst++ = (src[0] << 7) | BIT(6) | (src[1] >> 2); - *dst++ = (src[1] << 6) | BIT(5) | (src[2] >> 3); - *dst++ = (src[2] << 5) | BIT(4) | (src[3] >> 4); - *dst++ = (src[3] << 4) | BIT(3) | (src[4] >> 5); - *dst++ = (src[4] << 3) | BIT(2) | (src[5] >> 6); - *dst++ = (src[5] << 2) | BIT(1) | (src[6] >> 7); - *dst++ = (src[6] << 1) | BIT(0); - *dst++ = src[7]; - } - - src += 8; - added++; - } - } - - tr.len = chunk + added; - - tinydrm_dbg_spi_message(spi, &m); - ret = spi_sync(spi, &m); - if (ret) - return ret; - } - - return 0; -} - -static int mipi_dbi_spi1_transfer(struct mipi_dbi *mipi, int dc, - const void *buf, size_t len, - unsigned int bpw) -{ - struct spi_device *spi = mipi->spi; - struct spi_transfer tr = { - .bits_per_word = 9, - }; - const u16 *src16 = buf; - const u8 *src8 = buf; - struct spi_message m; - size_t max_chunk; - u16 *dst16; - int ret; - - if (!tinydrm_spi_bpw_supported(spi, 9)) - return mipi_dbi_spi1e_transfer(mipi, dc, buf, len, bpw); - - tr.speed_hz = mipi_dbi_spi_cmd_max_speed(spi, len); - max_chunk = mipi->tx_buf9_len; - dst16 = mipi->tx_buf9; - - if (drm_debug & DRM_UT_DRIVER) - pr_debug("[drm:%s] dc=%d, max_chunk=%zu, transfers:\n", - __func__, dc, max_chunk); - - max_chunk = min(max_chunk / 2, len); - - spi_message_init_with_transfers(&m, &tr, 1); - tr.tx_buf = dst16; - - while (len) { - size_t chunk = min(len, max_chunk); - unsigned int i; - - if (bpw == 16 && tinydrm_machine_little_endian()) { - for (i = 0; i < (chunk * 2); i += 2) { - dst16[i] = *src16 >> 8; - dst16[i + 1] = *src16++ & 0xFF; - if (dc) { - dst16[i] |= 0x0100; - dst16[i + 1] |= 0x0100; - } - } - } else { - for (i = 0; i < chunk; i++) { - dst16[i] = *src8++; - if (dc) - dst16[i] |= 0x0100; - } - } - - tr.len = chunk; - len -= chunk; - - tinydrm_dbg_spi_message(spi, &m); - ret = spi_sync(spi, &m); - if (ret) - return ret; - } - - return 0; -} - -static int mipi_dbi_typec1_command(struct mipi_dbi *mipi, u8 *cmd, - u8 *parameters, size_t num) -{ - unsigned int bpw = (*cmd == MIPI_DCS_WRITE_MEMORY_START) ? 16 : 8; - int ret; - - if (mipi_dbi_command_is_read(mipi, *cmd)) - return -ENOTSUPP; - - MIPI_DBI_DEBUG_COMMAND(*cmd, parameters, num); - - ret = mipi_dbi_spi1_transfer(mipi, 0, cmd, 1, 8); - if (ret || !num) - return ret; - - return mipi_dbi_spi1_transfer(mipi, 1, parameters, num, bpw); -} - -/* MIPI DBI Type C Option 3 */ - -static int mipi_dbi_typec3_command_read(struct mipi_dbi *mipi, u8 *cmd, - u8 *data, size_t len) -{ - struct spi_device *spi = mipi->spi; - u32 speed_hz = min_t(u32, MIPI_DBI_MAX_SPI_READ_SPEED, - spi->max_speed_hz / 2); - struct spi_transfer tr[2] = { - { - .speed_hz = speed_hz, - .tx_buf = cmd, - .len = 1, - }, { - .speed_hz = speed_hz, - .len = len, - }, - }; - struct spi_message m; - u8 *buf; - int ret; - - if (!len) - return -EINVAL; - - /* - * Support non-standard 24-bit and 32-bit Nokia read commands which - * start with a dummy clock, so we need to read an extra byte. - */ - if (*cmd == MIPI_DCS_GET_DISPLAY_ID || - *cmd == MIPI_DCS_GET_DISPLAY_STATUS) { - if (!(len == 3 || len == 4)) - return -EINVAL; - - tr[1].len = len + 1; - } - - buf = kmalloc(tr[1].len, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - tr[1].rx_buf = buf; - gpiod_set_value_cansleep(mipi->dc, 0); - - spi_message_init_with_transfers(&m, tr, ARRAY_SIZE(tr)); - ret = spi_sync(spi, &m); - if (ret) - goto err_free; - - tinydrm_dbg_spi_message(spi, &m); - - if (tr[1].len == len) { - memcpy(data, buf, len); - } else { - unsigned int i; - - for (i = 0; i < len; i++) - data[i] = (buf[i] << 1) | !!(buf[i + 1] & BIT(7)); - } - - MIPI_DBI_DEBUG_COMMAND(*cmd, data, len); - -err_free: - kfree(buf); - - return ret; -} - -static int mipi_dbi_typec3_command(struct mipi_dbi *mipi, u8 *cmd, - u8 *par, size_t num) -{ - struct spi_device *spi = mipi->spi; - unsigned int bpw = 8; - u32 speed_hz; - int ret; - - if (mipi_dbi_command_is_read(mipi, *cmd)) - return mipi_dbi_typec3_command_read(mipi, cmd, par, num); - - MIPI_DBI_DEBUG_COMMAND(*cmd, par, num); - - gpiod_set_value_cansleep(mipi->dc, 0); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, 1); - ret = tinydrm_spi_transfer(spi, speed_hz, NULL, 8, cmd, 1); - if (ret || !num) - return ret; - - if (*cmd == MIPI_DCS_WRITE_MEMORY_START && !mipi->swap_bytes) - bpw = 16; - - gpiod_set_value_cansleep(mipi->dc, 1); - speed_hz = mipi_dbi_spi_cmd_max_speed(spi, num); - - return tinydrm_spi_transfer(spi, speed_hz, NULL, bpw, par, num); -} - -/** - * mipi_dbi_spi_init - Initialize MIPI DBI SPI interfaced controller - * @spi: SPI device - * @mipi: &mipi_dbi structure to initialize - * @dc: D/C gpio (optional) - * - * This function sets &mipi_dbi->command, enables &mipi->read_commands for the - * usual read commands. It should be followed by a call to mipi_dbi_init() or - * a driver-specific init. - * - * If @dc is set, a Type C Option 3 interface is assumed, if not - * Type C Option 1. - * - * If the SPI master driver doesn't support the necessary bits per word, - * the following transformation is used: - * - * - 9-bit: reorder buffer as 9x 8-bit words, padded with no-op command. - * - 16-bit: if big endian send as 8-bit, if little endian swap bytes - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_spi_init(struct spi_device *spi, struct mipi_dbi *mipi, - struct gpio_desc *dc) -{ - size_t tx_size = tinydrm_spi_max_transfer_size(spi, 0); - struct device *dev = &spi->dev; - int ret; - - if (tx_size < 16) { - DRM_ERROR("SPI transmit buffer too small: %zu\n", tx_size); - return -EINVAL; - } - - /* - * Even though it's not the SPI device that does DMA (the master does), - * the dma mask is necessary for the dma_alloc_wc() in - * drm_gem_cma_create(). The dma_addr returned will be a physical - * address which might be different from the bus address, but this is - * not a problem since the address will not be used. - * The virtual address is used in the transfer and the SPI core - * re-maps it on the SPI master device using the DMA streaming API - * (spi_map_buf()). - */ - if (!dev->coherent_dma_mask) { - ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); - if (ret) { - dev_warn(dev, "Failed to set dma mask %d\n", ret); - return ret; - } - } - - mipi->spi = spi; - mipi->read_commands = mipi_dbi_dcs_read_commands; - - if (dc) { - mipi->command = mipi_dbi_typec3_command; - mipi->dc = dc; - if (tinydrm_machine_little_endian() && - !tinydrm_spi_bpw_supported(spi, 16)) - mipi->swap_bytes = true; - } else { - mipi->command = mipi_dbi_typec1_command; - mipi->tx_buf9_len = tx_size; - mipi->tx_buf9 = devm_kmalloc(dev, tx_size, GFP_KERNEL); - if (!mipi->tx_buf9) - return -ENOMEM; - } - - DRM_DEBUG_DRIVER("SPI speed: %uMHz\n", spi->max_speed_hz / 1000000); - - return 0; -} -EXPORT_SYMBOL(mipi_dbi_spi_init); - -#endif /* CONFIG_SPI */ - -#ifdef CONFIG_DEBUG_FS - -static ssize_t mipi_dbi_debugfs_command_write(struct file *file, - const char __user *ubuf, - size_t count, loff_t *ppos) -{ - struct seq_file *m = file->private_data; - struct mipi_dbi *mipi = m->private; - u8 val, cmd = 0, parameters[64]; - char *buf, *pos, *token; - unsigned int i; - int ret, idx; - - if (!drm_dev_enter(&mipi->drm, &idx)) - return -ENODEV; - - buf = memdup_user_nul(ubuf, count); - if (IS_ERR(buf)) { - ret = PTR_ERR(buf); - goto err_exit; - } - - /* strip trailing whitespace */ - for (i = count - 1; i > 0; i--) - if (isspace(buf[i])) - buf[i] = '\0'; - else - break; - i = 0; - pos = buf; - while (pos) { - token = strsep(&pos, " "); - if (!token) { - ret = -EINVAL; - goto err_free; - } - - ret = kstrtou8(token, 16, &val); - if (ret < 0) - goto err_free; - - if (token == buf) - cmd = val; - else - parameters[i++] = val; - - if (i == 64) { - ret = -E2BIG; - goto err_free; - } - } - - ret = mipi_dbi_command_buf(mipi, cmd, parameters, i); - -err_free: - kfree(buf); -err_exit: - drm_dev_exit(idx); - - return ret < 0 ? ret : count; -} - -static int mipi_dbi_debugfs_command_show(struct seq_file *m, void *unused) -{ - struct mipi_dbi *mipi = m->private; - u8 cmd, val[4]; - int ret, idx; - size_t len; - - if (!drm_dev_enter(&mipi->drm, &idx)) - return -ENODEV; - - for (cmd = 0; cmd < 255; cmd++) { - if (!mipi_dbi_command_is_read(mipi, cmd)) - continue; - - switch (cmd) { - case MIPI_DCS_READ_MEMORY_START: - case MIPI_DCS_READ_MEMORY_CONTINUE: - len = 2; - break; - case MIPI_DCS_GET_DISPLAY_ID: - len = 3; - break; - case MIPI_DCS_GET_DISPLAY_STATUS: - len = 4; - break; - default: - len = 1; - break; - } - - seq_printf(m, "%02x: ", cmd); - ret = mipi_dbi_command_buf(mipi, cmd, val, len); - if (ret) { - seq_puts(m, "XX\n"); - continue; - } - seq_printf(m, "%*phN\n", (int)len, val); - } - - drm_dev_exit(idx); - - return 0; -} - -static int mipi_dbi_debugfs_command_open(struct inode *inode, - struct file *file) -{ - return single_open(file, mipi_dbi_debugfs_command_show, - inode->i_private); -} - -static const struct file_operations mipi_dbi_debugfs_command_fops = { - .owner = THIS_MODULE, - .open = mipi_dbi_debugfs_command_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .write = mipi_dbi_debugfs_command_write, -}; - -/** - * mipi_dbi_debugfs_init - Create debugfs entries - * @minor: DRM minor - * - * This function creates a 'command' debugfs file for sending commands to the - * controller or getting the read command values. - * Drivers can use this as their &drm_driver->debugfs_init callback. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int mipi_dbi_debugfs_init(struct drm_minor *minor) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(minor->dev); - umode_t mode = S_IFREG | S_IWUSR; - - if (mipi->read_commands) - mode |= S_IRUGO; - debugfs_create_file("command", mode, minor->debugfs_root, mipi, - &mipi_dbi_debugfs_command_fops); - - return 0; -} -EXPORT_SYMBOL(mipi_dbi_debugfs_init); - -#endif - -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c deleted file mode 100644 index 97a874b40394..000000000000 --- a/drivers/gpu/drm/tinydrm/repaper.c +++ /dev/null @@ -1,1165 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * DRM driver for Pervasive Displays RePaper branded e-ink panels - * - * Copyright 2013-2017 Pervasive Displays, Inc. - * Copyright 2017 Noralf Trønnes - * - * The driver supports: - * Material Film: Aurora Mb (V231) - * Driver IC: G2 (eTC) - * - * The controller code was taken from the userspace driver: - * https://github.com/repaper/gratis - */ - -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/of_device.h> -#include <linux/sched/clock.h> -#include <linux/spi/spi.h> -#include <linux/thermal.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_damage_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_format_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_rect.h> -#include <drm/drm_vblank.h> -#include <drm/drm_simple_kms_helper.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -#define REPAPER_RID_G2_COG_ID 0x12 - -enum repaper_model { - E1144CS021 = 1, - E1190CS021, - E2200CS021, - E2271CS021, -}; - -enum repaper_stage { /* Image pixel -> Display pixel */ - REPAPER_COMPENSATE, /* B -> W, W -> B (Current Image) */ - REPAPER_WHITE, /* B -> N, W -> W (Current Image) */ - REPAPER_INVERSE, /* B -> N, W -> B (New Image) */ - REPAPER_NORMAL /* B -> B, W -> W (New Image) */ -}; - -enum repaper_epd_border_byte { - REPAPER_BORDER_BYTE_NONE, - REPAPER_BORDER_BYTE_ZERO, - REPAPER_BORDER_BYTE_SET, -}; - -struct repaper_epd { - struct drm_device drm; - struct drm_simple_display_pipe pipe; - struct spi_device *spi; - - struct gpio_desc *panel_on; - struct gpio_desc *border; - struct gpio_desc *discharge; - struct gpio_desc *reset; - struct gpio_desc *busy; - - struct thermal_zone_device *thermal; - - unsigned int height; - unsigned int width; - unsigned int bytes_per_scan; - const u8 *channel_select; - unsigned int stage_time; - unsigned int factored_stage_time; - bool middle_scan; - bool pre_border_byte; - enum repaper_epd_border_byte border_byte; - - u8 *line_buffer; - void *current_frame; - - bool enabled; - bool cleared; - bool partial; -}; - -static inline struct repaper_epd *drm_to_epd(struct drm_device *drm) -{ - return container_of(drm, struct repaper_epd, drm); -} - -static int repaper_spi_transfer(struct spi_device *spi, u8 header, - const void *tx, void *rx, size_t len) -{ - void *txbuf = NULL, *rxbuf = NULL; - struct spi_transfer tr[2] = {}; - u8 *headerbuf; - int ret; - - headerbuf = kmalloc(1, GFP_KERNEL); - if (!headerbuf) - return -ENOMEM; - - headerbuf[0] = header; - tr[0].tx_buf = headerbuf; - tr[0].len = 1; - - /* Stack allocated tx? */ - if (tx && len <= 32) { - txbuf = kmemdup(tx, len, GFP_KERNEL); - if (!txbuf) { - ret = -ENOMEM; - goto out_free; - } - } - - if (rx) { - rxbuf = kmalloc(len, GFP_KERNEL); - if (!rxbuf) { - ret = -ENOMEM; - goto out_free; - } - } - - tr[1].tx_buf = txbuf ? txbuf : tx; - tr[1].rx_buf = rxbuf; - tr[1].len = len; - - ndelay(80); - ret = spi_sync_transfer(spi, tr, 2); - if (rx && !ret) - memcpy(rx, rxbuf, len); - -out_free: - kfree(headerbuf); - kfree(txbuf); - kfree(rxbuf); - - return ret; -} - -static int repaper_write_buf(struct spi_device *spi, u8 reg, - const u8 *buf, size_t len) -{ - int ret; - - ret = repaper_spi_transfer(spi, 0x70, ®, NULL, 1); - if (ret) - return ret; - - return repaper_spi_transfer(spi, 0x72, buf, NULL, len); -} - -static int repaper_write_val(struct spi_device *spi, u8 reg, u8 val) -{ - return repaper_write_buf(spi, reg, &val, 1); -} - -static int repaper_read_val(struct spi_device *spi, u8 reg) -{ - int ret; - u8 val; - - ret = repaper_spi_transfer(spi, 0x70, ®, NULL, 1); - if (ret) - return ret; - - ret = repaper_spi_transfer(spi, 0x73, NULL, &val, 1); - - return ret ? ret : val; -} - -static int repaper_read_id(struct spi_device *spi) -{ - int ret; - u8 id; - - ret = repaper_spi_transfer(spi, 0x71, NULL, &id, 1); - - return ret ? ret : id; -} - -static void repaper_spi_mosi_low(struct spi_device *spi) -{ - const u8 buf[1] = { 0 }; - - spi_write(spi, buf, 1); -} - -/* pixels on display are numbered from 1 so even is actually bits 1,3,5,... */ -static void repaper_even_pixels(struct repaper_epd *epd, u8 **pp, - const u8 *data, u8 fixed_value, const u8 *mask, - enum repaper_stage stage) -{ - unsigned int b; - - for (b = 0; b < (epd->width / 8); b++) { - if (data) { - u8 pixels = data[b] & 0xaa; - u8 pixel_mask = 0xff; - u8 p1, p2, p3, p4; - - if (mask) { - pixel_mask = (mask[b] ^ pixels) & 0xaa; - pixel_mask |= pixel_mask >> 1; - } - - switch (stage) { - case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ - pixels = 0xaa | ((pixels ^ 0xaa) >> 1); - break; - case REPAPER_WHITE: /* B -> N, W -> W (Current) */ - pixels = 0x55 + ((pixels ^ 0xaa) >> 1); - break; - case REPAPER_INVERSE: /* B -> N, W -> B (New) */ - pixels = 0x55 | (pixels ^ 0xaa); - break; - case REPAPER_NORMAL: /* B -> B, W -> W (New) */ - pixels = 0xaa | (pixels >> 1); - break; - } - - pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55); - p1 = (pixels >> 6) & 0x03; - p2 = (pixels >> 4) & 0x03; - p3 = (pixels >> 2) & 0x03; - p4 = (pixels >> 0) & 0x03; - pixels = (p1 << 0) | (p2 << 2) | (p3 << 4) | (p4 << 6); - *(*pp)++ = pixels; - } else { - *(*pp)++ = fixed_value; - } - } -} - -/* pixels on display are numbered from 1 so odd is actually bits 0,2,4,... */ -static void repaper_odd_pixels(struct repaper_epd *epd, u8 **pp, - const u8 *data, u8 fixed_value, const u8 *mask, - enum repaper_stage stage) -{ - unsigned int b; - - for (b = epd->width / 8; b > 0; b--) { - if (data) { - u8 pixels = data[b - 1] & 0x55; - u8 pixel_mask = 0xff; - - if (mask) { - pixel_mask = (mask[b - 1] ^ pixels) & 0x55; - pixel_mask |= pixel_mask << 1; - } - - switch (stage) { - case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ - pixels = 0xaa | (pixels ^ 0x55); - break; - case REPAPER_WHITE: /* B -> N, W -> W (Current) */ - pixels = 0x55 + (pixels ^ 0x55); - break; - case REPAPER_INVERSE: /* B -> N, W -> B (New) */ - pixels = 0x55 | ((pixels ^ 0x55) << 1); - break; - case REPAPER_NORMAL: /* B -> B, W -> W (New) */ - pixels = 0xaa | pixels; - break; - } - - pixels = (pixels & pixel_mask) | (~pixel_mask & 0x55); - *(*pp)++ = pixels; - } else { - *(*pp)++ = fixed_value; - } - } -} - -/* interleave bits: (byte)76543210 -> (16 bit).7.6.5.4.3.2.1 */ -static inline u16 repaper_interleave_bits(u16 value) -{ - value = (value | (value << 4)) & 0x0f0f; - value = (value | (value << 2)) & 0x3333; - value = (value | (value << 1)) & 0x5555; - - return value; -} - -/* pixels on display are numbered from 1 */ -static void repaper_all_pixels(struct repaper_epd *epd, u8 **pp, - const u8 *data, u8 fixed_value, const u8 *mask, - enum repaper_stage stage) -{ - unsigned int b; - - for (b = epd->width / 8; b > 0; b--) { - if (data) { - u16 pixels = repaper_interleave_bits(data[b - 1]); - u16 pixel_mask = 0xffff; - - if (mask) { - pixel_mask = repaper_interleave_bits(mask[b - 1]); - - pixel_mask = (pixel_mask ^ pixels) & 0x5555; - pixel_mask |= pixel_mask << 1; - } - - switch (stage) { - case REPAPER_COMPENSATE: /* B -> W, W -> B (Current) */ - pixels = 0xaaaa | (pixels ^ 0x5555); - break; - case REPAPER_WHITE: /* B -> N, W -> W (Current) */ - pixels = 0x5555 + (pixels ^ 0x5555); - break; - case REPAPER_INVERSE: /* B -> N, W -> B (New) */ - pixels = 0x5555 | ((pixels ^ 0x5555) << 1); - break; - case REPAPER_NORMAL: /* B -> B, W -> W (New) */ - pixels = 0xaaaa | pixels; - break; - } - - pixels = (pixels & pixel_mask) | (~pixel_mask & 0x5555); - *(*pp)++ = pixels >> 8; - *(*pp)++ = pixels; - } else { - *(*pp)++ = fixed_value; - *(*pp)++ = fixed_value; - } - } -} - -/* output one line of scan and data bytes to the display */ -static void repaper_one_line(struct repaper_epd *epd, unsigned int line, - const u8 *data, u8 fixed_value, const u8 *mask, - enum repaper_stage stage) -{ - u8 *p = epd->line_buffer; - unsigned int b; - - repaper_spi_mosi_low(epd->spi); - - if (epd->pre_border_byte) - *p++ = 0x00; - - if (epd->middle_scan) { - /* data bytes */ - repaper_odd_pixels(epd, &p, data, fixed_value, mask, stage); - - /* scan line */ - for (b = epd->bytes_per_scan; b > 0; b--) { - if (line / 4 == b - 1) - *p++ = 0x03 << (2 * (line & 0x03)); - else - *p++ = 0x00; - } - - /* data bytes */ - repaper_even_pixels(epd, &p, data, fixed_value, mask, stage); - } else { - /* - * even scan line, but as lines on display are numbered from 1, - * line: 1,3,5,... - */ - for (b = 0; b < epd->bytes_per_scan; b++) { - if (0 != (line & 0x01) && line / 8 == b) - *p++ = 0xc0 >> (line & 0x06); - else - *p++ = 0x00; - } - - /* data bytes */ - repaper_all_pixels(epd, &p, data, fixed_value, mask, stage); - - /* - * odd scan line, but as lines on display are numbered from 1, - * line: 0,2,4,6,... - */ - for (b = epd->bytes_per_scan; b > 0; b--) { - if (0 == (line & 0x01) && line / 8 == b - 1) - *p++ = 0x03 << (line & 0x06); - else - *p++ = 0x00; - } - } - - switch (epd->border_byte) { - case REPAPER_BORDER_BYTE_NONE: - break; - - case REPAPER_BORDER_BYTE_ZERO: - *p++ = 0x00; - break; - - case REPAPER_BORDER_BYTE_SET: - switch (stage) { - case REPAPER_COMPENSATE: - case REPAPER_WHITE: - case REPAPER_INVERSE: - *p++ = 0x00; - break; - case REPAPER_NORMAL: - *p++ = 0xaa; - break; - } - break; - } - - repaper_write_buf(epd->spi, 0x0a, epd->line_buffer, - p - epd->line_buffer); - - /* Output data to panel */ - repaper_write_val(epd->spi, 0x02, 0x07); - - repaper_spi_mosi_low(epd->spi); -} - -static void repaper_frame_fixed(struct repaper_epd *epd, u8 fixed_value, - enum repaper_stage stage) -{ - unsigned int line; - - for (line = 0; line < epd->height; line++) - repaper_one_line(epd, line, NULL, fixed_value, NULL, stage); -} - -static void repaper_frame_data(struct repaper_epd *epd, const u8 *image, - const u8 *mask, enum repaper_stage stage) -{ - unsigned int line; - - if (!mask) { - for (line = 0; line < epd->height; line++) { - repaper_one_line(epd, line, - &image[line * (epd->width / 8)], - 0, NULL, stage); - } - } else { - for (line = 0; line < epd->height; line++) { - size_t n = line * epd->width / 8; - - repaper_one_line(epd, line, &image[n], 0, &mask[n], - stage); - } - } -} - -static void repaper_frame_fixed_repeat(struct repaper_epd *epd, u8 fixed_value, - enum repaper_stage stage) -{ - u64 start = local_clock(); - u64 end = start + (epd->factored_stage_time * 1000 * 1000); - - do { - repaper_frame_fixed(epd, fixed_value, stage); - } while (local_clock() < end); -} - -static void repaper_frame_data_repeat(struct repaper_epd *epd, const u8 *image, - const u8 *mask, enum repaper_stage stage) -{ - u64 start = local_clock(); - u64 end = start + (epd->factored_stage_time * 1000 * 1000); - - do { - repaper_frame_data(epd, image, mask, stage); - } while (local_clock() < end); -} - -static void repaper_get_temperature(struct repaper_epd *epd) -{ - int ret, temperature = 0; - unsigned int factor10x; - - if (!epd->thermal) - return; - - ret = thermal_zone_get_temp(epd->thermal, &temperature); - if (ret) { - DRM_DEV_ERROR(&epd->spi->dev, "Failed to get temperature (%d)\n", ret); - return; - } - - temperature /= 1000; - - if (temperature <= -10) - factor10x = 170; - else if (temperature <= -5) - factor10x = 120; - else if (temperature <= 5) - factor10x = 80; - else if (temperature <= 10) - factor10x = 40; - else if (temperature <= 15) - factor10x = 30; - else if (temperature <= 20) - factor10x = 20; - else if (temperature <= 40) - factor10x = 10; - else - factor10x = 7; - - epd->factored_stage_time = epd->stage_time * factor10x / 10; -} - -static void repaper_gray8_to_mono_reversed(u8 *buf, u32 width, u32 height) -{ - u8 *gray8 = buf, *mono = buf; - int y, xb, i; - - for (y = 0; y < height; y++) - for (xb = 0; xb < width / 8; xb++) { - u8 byte = 0x00; - - for (i = 0; i < 8; i++) { - int x = xb * 8 + i; - - byte >>= 1; - if (gray8[y * width + x] >> 7) - byte |= BIT(7); - } - *mono++ = byte; - } -} - -static int repaper_fb_dirty(struct drm_framebuffer *fb) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; - struct repaper_epd *epd = drm_to_epd(fb->dev); - struct drm_rect clip; - int idx, ret = 0; - u8 *buf = NULL; - - if (!epd->enabled) - return 0; - - if (!drm_dev_enter(fb->dev, &idx)) - return -ENODEV; - - /* repaper can't do partial updates */ - clip.x1 = 0; - clip.x2 = fb->width; - clip.y1 = 0; - clip.y2 = fb->height; - - repaper_get_temperature(epd); - - DRM_DEBUG("Flushing [FB:%d] st=%ums\n", fb->base.id, - epd->factored_stage_time); - - buf = kmalloc_array(fb->width, fb->height, GFP_KERNEL); - if (!buf) { - ret = -ENOMEM; - goto out_exit; - } - - if (import_attach) { - ret = dma_buf_begin_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - if (ret) - goto out_free; - } - - drm_fb_xrgb8888_to_gray8(buf, cma_obj->vaddr, fb, &clip); - - if (import_attach) { - ret = dma_buf_end_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - if (ret) - goto out_free; - } - - repaper_gray8_to_mono_reversed(buf, fb->width, fb->height); - - if (epd->partial) { - repaper_frame_data_repeat(epd, buf, epd->current_frame, - REPAPER_NORMAL); - } else if (epd->cleared) { - repaper_frame_data_repeat(epd, epd->current_frame, NULL, - REPAPER_COMPENSATE); - repaper_frame_data_repeat(epd, epd->current_frame, NULL, - REPAPER_WHITE); - repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE); - repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL); - - epd->partial = true; - } else { - /* Clear display (anything -> white) */ - repaper_frame_fixed_repeat(epd, 0xff, REPAPER_COMPENSATE); - repaper_frame_fixed_repeat(epd, 0xff, REPAPER_WHITE); - repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_INVERSE); - repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_NORMAL); - - /* Assuming a clear (white) screen output an image */ - repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_COMPENSATE); - repaper_frame_fixed_repeat(epd, 0xaa, REPAPER_WHITE); - repaper_frame_data_repeat(epd, buf, NULL, REPAPER_INVERSE); - repaper_frame_data_repeat(epd, buf, NULL, REPAPER_NORMAL); - - epd->cleared = true; - epd->partial = true; - } - - memcpy(epd->current_frame, buf, fb->width * fb->height / 8); - - /* - * An extra frame write is needed if pixels are set in the bottom line, - * or else grey lines rises up from the pixels - */ - if (epd->pre_border_byte) { - unsigned int x; - - for (x = 0; x < (fb->width / 8); x++) - if (buf[x + (fb->width * (fb->height - 1) / 8)]) { - repaper_frame_data_repeat(epd, buf, - epd->current_frame, - REPAPER_NORMAL); - break; - } - } - -out_free: - kfree(buf); -out_exit: - drm_dev_exit(idx); - - return ret; -} - -static void power_off(struct repaper_epd *epd) -{ - /* Turn off power and all signals */ - gpiod_set_value_cansleep(epd->reset, 0); - gpiod_set_value_cansleep(epd->panel_on, 0); - if (epd->border) - gpiod_set_value_cansleep(epd->border, 0); - - /* Ensure SPI MOSI and CLOCK are Low before CS Low */ - repaper_spi_mosi_low(epd->spi); - - /* Discharge pulse */ - gpiod_set_value_cansleep(epd->discharge, 1); - msleep(150); - gpiod_set_value_cansleep(epd->discharge, 0); -} - -static void repaper_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev); - struct spi_device *spi = epd->spi; - struct device *dev = &spi->dev; - bool dc_ok = false; - int i, ret, idx; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_DRIVER("\n"); - - /* Power up sequence */ - gpiod_set_value_cansleep(epd->reset, 0); - gpiod_set_value_cansleep(epd->panel_on, 0); - gpiod_set_value_cansleep(epd->discharge, 0); - if (epd->border) - gpiod_set_value_cansleep(epd->border, 0); - repaper_spi_mosi_low(spi); - usleep_range(5000, 10000); - - gpiod_set_value_cansleep(epd->panel_on, 1); - /* - * This delay comes from the repaper.org userspace driver, it's not - * mentioned in the datasheet. - */ - usleep_range(10000, 15000); - gpiod_set_value_cansleep(epd->reset, 1); - if (epd->border) - gpiod_set_value_cansleep(epd->border, 1); - usleep_range(5000, 10000); - gpiod_set_value_cansleep(epd->reset, 0); - usleep_range(5000, 10000); - gpiod_set_value_cansleep(epd->reset, 1); - usleep_range(5000, 10000); - - /* Wait for COG to become ready */ - for (i = 100; i > 0; i--) { - if (!gpiod_get_value_cansleep(epd->busy)) - break; - - usleep_range(10, 100); - } - - if (!i) { - DRM_DEV_ERROR(dev, "timeout waiting for panel to become ready.\n"); - power_off(epd); - goto out_exit; - } - - repaper_read_id(spi); - ret = repaper_read_id(spi); - if (ret != REPAPER_RID_G2_COG_ID) { - if (ret < 0) - dev_err(dev, "failed to read chip (%d)\n", ret); - else - dev_err(dev, "wrong COG ID 0x%02x\n", ret); - power_off(epd); - goto out_exit; - } - - /* Disable OE */ - repaper_write_val(spi, 0x02, 0x40); - - ret = repaper_read_val(spi, 0x0f); - if (ret < 0 || !(ret & 0x80)) { - if (ret < 0) - DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret); - else - DRM_DEV_ERROR(dev, "panel is reported broken\n"); - power_off(epd); - goto out_exit; - } - - /* Power saving mode */ - repaper_write_val(spi, 0x0b, 0x02); - /* Channel select */ - repaper_write_buf(spi, 0x01, epd->channel_select, 8); - /* High power mode osc */ - repaper_write_val(spi, 0x07, 0xd1); - /* Power setting */ - repaper_write_val(spi, 0x08, 0x02); - /* Vcom level */ - repaper_write_val(spi, 0x09, 0xc2); - /* Power setting */ - repaper_write_val(spi, 0x04, 0x03); - /* Driver latch on */ - repaper_write_val(spi, 0x03, 0x01); - /* Driver latch off */ - repaper_write_val(spi, 0x03, 0x00); - usleep_range(5000, 10000); - - /* Start chargepump */ - for (i = 0; i < 4; ++i) { - /* Charge pump positive voltage on - VGH/VDL on */ - repaper_write_val(spi, 0x05, 0x01); - msleep(240); - - /* Charge pump negative voltage on - VGL/VDL on */ - repaper_write_val(spi, 0x05, 0x03); - msleep(40); - - /* Charge pump Vcom on - Vcom driver on */ - repaper_write_val(spi, 0x05, 0x0f); - msleep(40); - - /* check DC/DC */ - ret = repaper_read_val(spi, 0x0f); - if (ret < 0) { - DRM_DEV_ERROR(dev, "failed to read chip (%d)\n", ret); - power_off(epd); - goto out_exit; - } - - if (ret & 0x40) { - dc_ok = true; - break; - } - } - - if (!dc_ok) { - DRM_DEV_ERROR(dev, "dc/dc failed\n"); - power_off(epd); - goto out_exit; - } - - /* - * Output enable to disable - * The userspace driver sets this to 0x04, but the datasheet says 0x06 - */ - repaper_write_val(spi, 0x02, 0x04); - - epd->enabled = true; - epd->partial = false; -out_exit: - drm_dev_exit(idx); -} - -static void repaper_pipe_disable(struct drm_simple_display_pipe *pipe) -{ - struct repaper_epd *epd = drm_to_epd(pipe->crtc.dev); - struct spi_device *spi = epd->spi; - unsigned int line; - - /* - * This callback is not protected by drm_dev_enter/exit since we want to - * turn off the display on regular driver unload. It's highly unlikely - * that the underlying SPI controller is gone should this be called after - * unplug. - */ - - if (!epd->enabled) - return; - - DRM_DEBUG_DRIVER("\n"); - - epd->enabled = false; - - /* Nothing frame */ - for (line = 0; line < epd->height; line++) - repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL, - REPAPER_COMPENSATE); - - /* 2.7" */ - if (epd->border) { - /* Dummy line */ - repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL, - REPAPER_COMPENSATE); - msleep(25); - gpiod_set_value_cansleep(epd->border, 0); - msleep(200); - gpiod_set_value_cansleep(epd->border, 1); - } else { - /* Border dummy line */ - repaper_one_line(epd, 0x7fffu, NULL, 0x00, NULL, - REPAPER_NORMAL); - msleep(200); - } - - /* not described in datasheet */ - repaper_write_val(spi, 0x0b, 0x00); - /* Latch reset turn on */ - repaper_write_val(spi, 0x03, 0x01); - /* Power off charge pump Vcom */ - repaper_write_val(spi, 0x05, 0x03); - /* Power off charge pump neg voltage */ - repaper_write_val(spi, 0x05, 0x01); - msleep(120); - /* Discharge internal */ - repaper_write_val(spi, 0x04, 0x80); - /* turn off all charge pumps */ - repaper_write_val(spi, 0x05, 0x00); - /* Turn off osc */ - repaper_write_val(spi, 0x07, 0x01); - msleep(50); - - power_off(epd); -} - -static void repaper_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct drm_plane_state *state = pipe->plane.state; - struct drm_crtc *crtc = &pipe->crtc; - struct drm_rect rect; - - if (drm_atomic_helper_damage_merged(old_state, state, &rect)) - repaper_fb_dirty(state->fb); - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} - -static const struct drm_simple_display_pipe_funcs repaper_pipe_funcs = { - .enable = repaper_pipe_enable, - .disable = repaper_pipe_disable, - .update = repaper_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_mode_config_funcs repaper_mode_config_funcs = { - .fb_create = drm_gem_fb_create_with_dirty, - .atomic_check = drm_atomic_helper_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static void repaper_release(struct drm_device *drm) -{ - struct repaper_epd *epd = drm_to_epd(drm); - - DRM_DEBUG_DRIVER("\n"); - - drm_mode_config_cleanup(drm); - drm_dev_fini(drm); - kfree(epd); -} - -static const uint32_t repaper_formats[] = { - DRM_FORMAT_XRGB8888, -}; - -static const struct drm_display_mode repaper_e1144cs021_mode = { - DRM_SIMPLE_MODE(128, 96, 29, 22), -}; - -static const u8 repaper_e1144cs021_cs[] = { 0x00, 0x00, 0x00, 0x00, - 0x00, 0x0f, 0xff, 0x00 }; - -static const struct drm_display_mode repaper_e1190cs021_mode = { - DRM_SIMPLE_MODE(144, 128, 36, 32), -}; - -static const u8 repaper_e1190cs021_cs[] = { 0x00, 0x00, 0x00, 0x03, - 0xfc, 0x00, 0x00, 0xff }; - -static const struct drm_display_mode repaper_e2200cs021_mode = { - DRM_SIMPLE_MODE(200, 96, 46, 22), -}; - -static const u8 repaper_e2200cs021_cs[] = { 0x00, 0x00, 0x00, 0x00, - 0x01, 0xff, 0xe0, 0x00 }; - -static const struct drm_display_mode repaper_e2271cs021_mode = { - DRM_SIMPLE_MODE(264, 176, 57, 38), -}; - -static const u8 repaper_e2271cs021_cs[] = { 0x00, 0x00, 0x00, 0x7f, - 0xff, 0xfe, 0x00, 0x00 }; - -DEFINE_DRM_GEM_CMA_FOPS(repaper_fops); - -static struct drm_driver repaper_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &repaper_fops, - .release = repaper_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .name = "repaper", - .desc = "Pervasive Displays RePaper e-ink panels", - .date = "20170405", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id repaper_of_match[] = { - { .compatible = "pervasive,e1144cs021", .data = (void *)E1144CS021 }, - { .compatible = "pervasive,e1190cs021", .data = (void *)E1190CS021 }, - { .compatible = "pervasive,e2200cs021", .data = (void *)E2200CS021 }, - { .compatible = "pervasive,e2271cs021", .data = (void *)E2271CS021 }, - {}, -}; -MODULE_DEVICE_TABLE(of, repaper_of_match); - -static const struct spi_device_id repaper_id[] = { - { "e1144cs021", E1144CS021 }, - { "e1190cs021", E1190CS021 }, - { "e2200cs021", E2200CS021 }, - { "e2271cs021", E2271CS021 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, repaper_id); - -static int repaper_probe(struct spi_device *spi) -{ - const struct drm_display_mode *mode; - const struct spi_device_id *spi_id; - const struct of_device_id *match; - struct device *dev = &spi->dev; - enum repaper_model model; - const char *thermal_zone; - struct repaper_epd *epd; - size_t line_buffer_size; - struct drm_device *drm; - int ret; - - match = of_match_device(repaper_of_match, dev); - if (match) { - model = (enum repaper_model)match->data; - } else { - spi_id = spi_get_device_id(spi); - model = spi_id->driver_data; - } - - /* The SPI device is used to allocate dma memory */ - if (!dev->coherent_dma_mask) { - ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); - if (ret) { - dev_warn(dev, "Failed to set dma mask %d\n", ret); - return ret; - } - } - - epd = kzalloc(sizeof(*epd), GFP_KERNEL); - if (!epd) - return -ENOMEM; - - drm = &epd->drm; - - ret = devm_drm_dev_init(dev, drm, &repaper_driver); - if (ret) { - kfree(epd); - return ret; - } - - drm_mode_config_init(drm); - drm->mode_config.funcs = &repaper_mode_config_funcs; - - epd->spi = spi; - - epd->panel_on = devm_gpiod_get(dev, "panel-on", GPIOD_OUT_LOW); - if (IS_ERR(epd->panel_on)) { - ret = PTR_ERR(epd->panel_on); - if (ret != -EPROBE_DEFER) - DRM_DEV_ERROR(dev, "Failed to get gpio 'panel-on'\n"); - return ret; - } - - epd->discharge = devm_gpiod_get(dev, "discharge", GPIOD_OUT_LOW); - if (IS_ERR(epd->discharge)) { - ret = PTR_ERR(epd->discharge); - if (ret != -EPROBE_DEFER) - DRM_DEV_ERROR(dev, "Failed to get gpio 'discharge'\n"); - return ret; - } - - epd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); - if (IS_ERR(epd->reset)) { - ret = PTR_ERR(epd->reset); - if (ret != -EPROBE_DEFER) - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return ret; - } - - epd->busy = devm_gpiod_get(dev, "busy", GPIOD_IN); - if (IS_ERR(epd->busy)) { - ret = PTR_ERR(epd->busy); - if (ret != -EPROBE_DEFER) - DRM_DEV_ERROR(dev, "Failed to get gpio 'busy'\n"); - return ret; - } - - if (!device_property_read_string(dev, "pervasive,thermal-zone", - &thermal_zone)) { - epd->thermal = thermal_zone_get_zone_by_name(thermal_zone); - if (IS_ERR(epd->thermal)) { - DRM_DEV_ERROR(dev, "Failed to get thermal zone: %s\n", thermal_zone); - return PTR_ERR(epd->thermal); - } - } - - switch (model) { - case E1144CS021: - mode = &repaper_e1144cs021_mode; - epd->channel_select = repaper_e1144cs021_cs; - epd->stage_time = 480; - epd->bytes_per_scan = 96 / 4; - epd->middle_scan = true; /* data-scan-data */ - epd->pre_border_byte = false; - epd->border_byte = REPAPER_BORDER_BYTE_ZERO; - break; - - case E1190CS021: - mode = &repaper_e1190cs021_mode; - epd->channel_select = repaper_e1190cs021_cs; - epd->stage_time = 480; - epd->bytes_per_scan = 128 / 4 / 2; - epd->middle_scan = false; /* scan-data-scan */ - epd->pre_border_byte = false; - epd->border_byte = REPAPER_BORDER_BYTE_SET; - break; - - case E2200CS021: - mode = &repaper_e2200cs021_mode; - epd->channel_select = repaper_e2200cs021_cs; - epd->stage_time = 480; - epd->bytes_per_scan = 96 / 4; - epd->middle_scan = true; /* data-scan-data */ - epd->pre_border_byte = true; - epd->border_byte = REPAPER_BORDER_BYTE_NONE; - break; - - case E2271CS021: - epd->border = devm_gpiod_get(dev, "border", GPIOD_OUT_LOW); - if (IS_ERR(epd->border)) { - ret = PTR_ERR(epd->border); - if (ret != -EPROBE_DEFER) - DRM_DEV_ERROR(dev, "Failed to get gpio 'border'\n"); - return ret; - } - - mode = &repaper_e2271cs021_mode; - epd->channel_select = repaper_e2271cs021_cs; - epd->stage_time = 630; - epd->bytes_per_scan = 176 / 4; - epd->middle_scan = true; /* data-scan-data */ - epd->pre_border_byte = true; - epd->border_byte = REPAPER_BORDER_BYTE_NONE; - break; - - default: - return -ENODEV; - } - - epd->width = mode->hdisplay; - epd->height = mode->vdisplay; - epd->factored_stage_time = epd->stage_time; - - line_buffer_size = 2 * epd->width / 8 + epd->bytes_per_scan + 2; - epd->line_buffer = devm_kzalloc(dev, line_buffer_size, GFP_KERNEL); - if (!epd->line_buffer) - return -ENOMEM; - - epd->current_frame = devm_kzalloc(dev, epd->width * epd->height / 8, - GFP_KERNEL); - if (!epd->current_frame) - return -ENOMEM; - - ret = tinydrm_display_pipe_init(drm, &epd->pipe, &repaper_pipe_funcs, - DRM_MODE_CONNECTOR_VIRTUAL, - repaper_formats, - ARRAY_SIZE(repaper_formats), mode, 0); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - DRM_DEBUG_DRIVER("SPI speed: %uMHz\n", spi->max_speed_hz / 1000000); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int repaper_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void repaper_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver repaper_spi_driver = { - .driver = { - .name = "repaper", - .owner = THIS_MODULE, - .of_match_table = repaper_of_match, - }, - .id_table = repaper_id, - .probe = repaper_probe, - .remove = repaper_remove, - .shutdown = repaper_shutdown, -}; -module_spi_driver(repaper_spi_driver); - -MODULE_DESCRIPTION("Pervasive Displays RePaper DRM driver"); -MODULE_AUTHOR("Noralf Trønnes"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/st7586.c b/drivers/gpu/drm/tinydrm/st7586.c deleted file mode 100644 index 9ac626265152..000000000000 --- a/drivers/gpu/drm/tinydrm/st7586.c +++ /dev/null @@ -1,442 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * DRM driver for Sitronix ST7586 panels - * - * Copyright 2017 David Lechner <david@lechnology.com> - */ - -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> -#include <video/mipi_display.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_damage_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_format_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_rect.h> -#include <drm/drm_vblank.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -/* controller-specific commands */ -#define ST7586_DISP_MODE_GRAY 0x38 -#define ST7586_DISP_MODE_MONO 0x39 -#define ST7586_ENABLE_DDRAM 0x3a -#define ST7586_SET_DISP_DUTY 0xb0 -#define ST7586_SET_PART_DISP 0xb4 -#define ST7586_SET_NLINE_INV 0xb5 -#define ST7586_SET_VOP 0xc0 -#define ST7586_SET_BIAS_SYSTEM 0xc3 -#define ST7586_SET_BOOST_LEVEL 0xc4 -#define ST7586_SET_VOP_OFFSET 0xc7 -#define ST7586_ENABLE_ANALOG 0xd0 -#define ST7586_AUTO_READ_CTRL 0xd7 -#define ST7586_OTP_RW_CTRL 0xe0 -#define ST7586_OTP_CTRL_OUT 0xe1 -#define ST7586_OTP_READ 0xe3 - -#define ST7586_DISP_CTRL_MX BIT(6) -#define ST7586_DISP_CTRL_MY BIT(7) - -/* - * The ST7586 controller has an unusual pixel format where 2bpp grayscale is - * packed 3 pixels per byte with the first two pixels using 3 bits and the 3rd - * pixel using only 2 bits. - * - * | D7 | D6 | D5 || | || 2bpp | - * | (D4) | (D3) | (D2) || D1 | D0 || GRAY | - * +------+------+------++------+------++------+ - * | 1 | 1 | 1 || 1 | 1 || 0 0 | black - * | 1 | 0 | 0 || 1 | 0 || 0 1 | dark gray - * | 0 | 1 | 0 || 0 | 1 || 1 0 | light gray - * | 0 | 0 | 0 || 0 | 0 || 1 1 | white - */ - -static const u8 st7586_lookup[] = { 0x7, 0x4, 0x2, 0x0 }; - -static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr, - struct drm_framebuffer *fb, - struct drm_rect *clip) -{ - size_t len = (clip->x2 - clip->x1) * (clip->y2 - clip->y1); - unsigned int x, y; - u8 *src, *buf, val; - - buf = kmalloc(len, GFP_KERNEL); - if (!buf) - return; - - drm_fb_xrgb8888_to_gray8(buf, vaddr, fb, clip); - src = buf; - - for (y = clip->y1; y < clip->y2; y++) { - for (x = clip->x1; x < clip->x2; x += 3) { - val = st7586_lookup[*src++ >> 6] << 5; - val |= st7586_lookup[*src++ >> 6] << 2; - val |= st7586_lookup[*src++ >> 6] >> 1; - *dst++ = val; - } - } - - kfree(buf); -} - -static int st7586_buf_copy(void *dst, struct drm_framebuffer *fb, - struct drm_rect *clip) -{ - struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0); - struct dma_buf_attachment *import_attach = cma_obj->base.import_attach; - void *src = cma_obj->vaddr; - int ret = 0; - - if (import_attach) { - ret = dma_buf_begin_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - if (ret) - return ret; - } - - st7586_xrgb8888_to_gray332(dst, src, fb, clip); - - if (import_attach) - ret = dma_buf_end_cpu_access(import_attach->dmabuf, - DMA_FROM_DEVICE); - - return ret; -} - -static void st7586_fb_dirty(struct drm_framebuffer *fb, struct drm_rect *rect) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(fb->dev); - int start, end, idx, ret = 0; - - if (!mipi->enabled) - return; - - if (!drm_dev_enter(fb->dev, &idx)) - return; - - /* 3 pixels per byte, so grow clip to nearest multiple of 3 */ - rect->x1 = rounddown(rect->x1, 3); - rect->x2 = roundup(rect->x2, 3); - - DRM_DEBUG_KMS("Flushing [FB:%d] " DRM_RECT_FMT "\n", fb->base.id, DRM_RECT_ARG(rect)); - - ret = st7586_buf_copy(mipi->tx_buf, fb, rect); - if (ret) - goto err_msg; - - /* Pixels are packed 3 per byte */ - start = rect->x1 / 3; - end = rect->x2 / 3; - - mipi_dbi_command(mipi, MIPI_DCS_SET_COLUMN_ADDRESS, - (start >> 8) & 0xFF, start & 0xFF, - (end >> 8) & 0xFF, (end - 1) & 0xFF); - mipi_dbi_command(mipi, MIPI_DCS_SET_PAGE_ADDRESS, - (rect->y1 >> 8) & 0xFF, rect->y1 & 0xFF, - (rect->y2 >> 8) & 0xFF, (rect->y2 - 1) & 0xFF); - - ret = mipi_dbi_command_buf(mipi, MIPI_DCS_WRITE_MEMORY_START, - (u8 *)mipi->tx_buf, - (end - start) * (rect->y2 - rect->y1)); -err_msg: - if (ret) - dev_err_once(fb->dev->dev, "Failed to update display %d\n", ret); - - drm_dev_exit(idx); -} - -static void st7586_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct drm_plane_state *state = pipe->plane.state; - struct drm_crtc *crtc = &pipe->crtc; - struct drm_rect rect; - - if (drm_atomic_helper_damage_merged(old_state, state, &rect)) - st7586_fb_dirty(state->fb, &rect); - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} - -static void st7586_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - struct drm_framebuffer *fb = plane_state->fb; - struct drm_rect rect = { - .x1 = 0, - .x2 = fb->width, - .y1 = 0, - .y2 = fb->height, - }; - int idx, ret; - u8 addr_mode; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_reset(mipi); - if (ret) - goto out_exit; - - mipi_dbi_command(mipi, ST7586_AUTO_READ_CTRL, 0x9f); - mipi_dbi_command(mipi, ST7586_OTP_RW_CTRL, 0x00); - - msleep(10); - - mipi_dbi_command(mipi, ST7586_OTP_READ); - - msleep(20); - - mipi_dbi_command(mipi, ST7586_OTP_CTRL_OUT); - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF); - - msleep(50); - - mipi_dbi_command(mipi, ST7586_SET_VOP_OFFSET, 0x00); - mipi_dbi_command(mipi, ST7586_SET_VOP, 0xe3, 0x00); - mipi_dbi_command(mipi, ST7586_SET_BIAS_SYSTEM, 0x02); - mipi_dbi_command(mipi, ST7586_SET_BOOST_LEVEL, 0x04); - mipi_dbi_command(mipi, ST7586_ENABLE_ANALOG, 0x1d); - mipi_dbi_command(mipi, ST7586_SET_NLINE_INV, 0x00); - mipi_dbi_command(mipi, ST7586_DISP_MODE_GRAY); - mipi_dbi_command(mipi, ST7586_ENABLE_DDRAM, 0x02); - - switch (mipi->rotation) { - default: - addr_mode = 0x00; - break; - case 90: - addr_mode = ST7586_DISP_CTRL_MY; - break; - case 180: - addr_mode = ST7586_DISP_CTRL_MX | ST7586_DISP_CTRL_MY; - break; - case 270: - addr_mode = ST7586_DISP_CTRL_MX; - break; - } - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - - mipi_dbi_command(mipi, ST7586_SET_DISP_DUTY, 0x7f); - mipi_dbi_command(mipi, ST7586_SET_PART_DISP, 0xa0); - mipi_dbi_command(mipi, MIPI_DCS_SET_PARTIAL_AREA, 0x00, 0x00, 0x00, 0x77); - mipi_dbi_command(mipi, MIPI_DCS_EXIT_INVERT_MODE); - - msleep(100); - - mipi->enabled = true; - st7586_fb_dirty(fb, &rect); - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); -out_exit: - drm_dev_exit(idx); -} - -static void st7586_pipe_disable(struct drm_simple_display_pipe *pipe) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - - /* - * This callback is not protected by drm_dev_enter/exit since we want to - * turn off the display on regular driver unload. It's highly unlikely - * that the underlying SPI controller is gone should this be called after - * unplug. - */ - - DRM_DEBUG_KMS("\n"); - - if (!mipi->enabled) - return; - - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_OFF); - mipi->enabled = false; -} - -static const u32 st7586_formats[] = { - DRM_FORMAT_XRGB8888, -}; - -static const struct drm_simple_display_pipe_funcs st7586_pipe_funcs = { - .enable = st7586_pipe_enable, - .disable = st7586_pipe_disable, - .update = st7586_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_mode_config_funcs st7586_mode_config_funcs = { - .fb_create = drm_gem_fb_create_with_dirty, - .atomic_check = drm_atomic_helper_check, - .atomic_commit = drm_atomic_helper_commit, -}; - -static const struct drm_display_mode st7586_mode = { - DRM_SIMPLE_MODE(178, 128, 37, 27), -}; - -DEFINE_DRM_GEM_CMA_FOPS(st7586_fops); - -static struct drm_driver st7586_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &st7586_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "st7586", - .desc = "Sitronix ST7586", - .date = "20170801", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id st7586_of_match[] = { - { .compatible = "lego,ev3-lcd" }, - {}, -}; -MODULE_DEVICE_TABLE(of, st7586_of_match); - -static const struct spi_device_id st7586_id[] = { - { "ev3-lcd", 0 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, st7586_id); - -static int st7586_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *a0; - u32 rotation = 0; - size_t bufsize; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &st7586_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - drm->mode_config.preferred_depth = 32; - drm->mode_config.funcs = &st7586_mode_config_funcs; - - mutex_init(&mipi->cmdlock); - - bufsize = (st7586_mode.vdisplay + 2) / 3 * st7586_mode.hdisplay; - mipi->tx_buf = devm_kmalloc(dev, bufsize, GFP_KERNEL); - if (!mipi->tx_buf) - return -ENOMEM; - - mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - a0 = devm_gpiod_get(dev, "a0", GPIOD_OUT_LOW); - if (IS_ERR(a0)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'a0'\n"); - return PTR_ERR(a0); - } - - device_property_read_u32(dev, "rotation", &rotation); - mipi->rotation = rotation; - - ret = mipi_dbi_spi_init(spi, mipi, a0); - if (ret) - return ret; - - /* Cannot read from this controller via SPI */ - mipi->read_commands = NULL; - - /* - * we are using 8-bit data, so we are not actually swapping anything, - * but setting mipi->swap_bytes makes mipi_dbi_typec3_command() do the - * right thing and not use 16-bit transfers (which results in swapped - * bytes on little-endian systems and causes out of order data to be - * sent to the display). - */ - mipi->swap_bytes = true; - - ret = tinydrm_display_pipe_init(drm, &mipi->pipe, &st7586_pipe_funcs, - DRM_MODE_CONNECTOR_VIRTUAL, - st7586_formats, ARRAY_SIZE(st7586_formats), - &st7586_mode, rotation); - if (ret) - return ret; - - drm_plane_enable_fb_damage_clips(&mipi->pipe.plane); - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - DRM_DEBUG_KMS("preferred_depth=%u, rotation = %u\n", - drm->mode_config.preferred_depth, rotation); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int st7586_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void st7586_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver st7586_spi_driver = { - .driver = { - .name = "st7586", - .owner = THIS_MODULE, - .of_match_table = st7586_of_match, - }, - .id_table = st7586_id, - .probe = st7586_probe, - .remove = st7586_remove, - .shutdown = st7586_shutdown, -}; -module_spi_driver(st7586_spi_driver); - -MODULE_DESCRIPTION("Sitronix ST7586 DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/tinydrm/st7735r.c b/drivers/gpu/drm/tinydrm/st7735r.c deleted file mode 100644 index ce9109e613e0..000000000000 --- a/drivers/gpu/drm/tinydrm/st7735r.c +++ /dev/null @@ -1,245 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * DRM driver for Sitronix ST7735R panels - * - * Copyright 2017 David Lechner <david@lechnology.com> - */ - -#include <linux/backlight.h> -#include <linux/delay.h> -#include <linux/dma-buf.h> -#include <linux/gpio/consumer.h> -#include <linux/module.h> -#include <linux/property.h> -#include <linux/spi/spi.h> -#include <video/mipi_display.h> - -#include <drm/drm_atomic_helper.h> -#include <drm/drm_drv.h> -#include <drm/drm_fb_helper.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/tinydrm/mipi-dbi.h> -#include <drm/tinydrm/tinydrm-helpers.h> - -#define ST7735R_FRMCTR1 0xb1 -#define ST7735R_FRMCTR2 0xb2 -#define ST7735R_FRMCTR3 0xb3 -#define ST7735R_INVCTR 0xb4 -#define ST7735R_PWCTR1 0xc0 -#define ST7735R_PWCTR2 0xc1 -#define ST7735R_PWCTR3 0xc2 -#define ST7735R_PWCTR4 0xc3 -#define ST7735R_PWCTR5 0xc4 -#define ST7735R_VMCTR1 0xc5 -#define ST7735R_GAMCTRP1 0xe0 -#define ST7735R_GAMCTRN1 0xe1 - -#define ST7735R_MY BIT(7) -#define ST7735R_MX BIT(6) -#define ST7735R_MV BIT(5) - -static void jd_t18003_t01_pipe_enable(struct drm_simple_display_pipe *pipe, - struct drm_crtc_state *crtc_state, - struct drm_plane_state *plane_state) -{ - struct mipi_dbi *mipi = drm_to_mipi_dbi(pipe->crtc.dev); - int ret, idx; - u8 addr_mode; - - if (!drm_dev_enter(pipe->crtc.dev, &idx)) - return; - - DRM_DEBUG_KMS("\n"); - - ret = mipi_dbi_poweron_reset(mipi); - if (ret) - goto out_exit; - - msleep(150); - - mipi_dbi_command(mipi, MIPI_DCS_EXIT_SLEEP_MODE); - msleep(500); - - mipi_dbi_command(mipi, ST7735R_FRMCTR1, 0x01, 0x2c, 0x2d); - mipi_dbi_command(mipi, ST7735R_FRMCTR2, 0x01, 0x2c, 0x2d); - mipi_dbi_command(mipi, ST7735R_FRMCTR3, 0x01, 0x2c, 0x2d, 0x01, 0x2c, - 0x2d); - mipi_dbi_command(mipi, ST7735R_INVCTR, 0x07); - mipi_dbi_command(mipi, ST7735R_PWCTR1, 0xa2, 0x02, 0x84); - mipi_dbi_command(mipi, ST7735R_PWCTR2, 0xc5); - mipi_dbi_command(mipi, ST7735R_PWCTR3, 0x0a, 0x00); - mipi_dbi_command(mipi, ST7735R_PWCTR4, 0x8a, 0x2a); - mipi_dbi_command(mipi, ST7735R_PWCTR5, 0x8a, 0xee); - mipi_dbi_command(mipi, ST7735R_VMCTR1, 0x0e); - mipi_dbi_command(mipi, MIPI_DCS_EXIT_INVERT_MODE); - switch (mipi->rotation) { - default: - addr_mode = ST7735R_MX | ST7735R_MY; - break; - case 90: - addr_mode = ST7735R_MX | ST7735R_MV; - break; - case 180: - addr_mode = 0; - break; - case 270: - addr_mode = ST7735R_MY | ST7735R_MV; - break; - } - mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode); - mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, - MIPI_DCS_PIXEL_FMT_16BIT); - mipi_dbi_command(mipi, ST7735R_GAMCTRP1, 0x02, 0x1c, 0x07, 0x12, 0x37, - 0x32, 0x29, 0x2d, 0x29, 0x25, 0x2b, 0x39, 0x00, 0x01, - 0x03, 0x10); - mipi_dbi_command(mipi, ST7735R_GAMCTRN1, 0x03, 0x1d, 0x07, 0x06, 0x2e, - 0x2c, 0x29, 0x2d, 0x2e, 0x2e, 0x37, 0x3f, 0x00, 0x00, - 0x02, 0x10); - mipi_dbi_command(mipi, MIPI_DCS_SET_DISPLAY_ON); - - msleep(100); - - mipi_dbi_command(mipi, MIPI_DCS_ENTER_NORMAL_MODE); - - msleep(20); - - mipi_dbi_enable_flush(mipi, crtc_state, plane_state); -out_exit: - drm_dev_exit(idx); -} - -static const struct drm_simple_display_pipe_funcs jd_t18003_t01_pipe_funcs = { - .enable = jd_t18003_t01_pipe_enable, - .disable = mipi_dbi_pipe_disable, - .update = mipi_dbi_pipe_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, -}; - -static const struct drm_display_mode jd_t18003_t01_mode = { - DRM_SIMPLE_MODE(128, 160, 28, 35), -}; - -DEFINE_DRM_GEM_CMA_FOPS(st7735r_fops); - -static struct drm_driver st7735r_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | - DRIVER_ATOMIC, - .fops = &st7735r_fops, - .release = mipi_dbi_release, - DRM_GEM_CMA_VMAP_DRIVER_OPS, - .debugfs_init = mipi_dbi_debugfs_init, - .name = "st7735r", - .desc = "Sitronix ST7735R", - .date = "20171128", - .major = 1, - .minor = 0, -}; - -static const struct of_device_id st7735r_of_match[] = { - { .compatible = "jianda,jd-t18003-t01" }, - { }, -}; -MODULE_DEVICE_TABLE(of, st7735r_of_match); - -static const struct spi_device_id st7735r_id[] = { - { "jd-t18003-t01", 0 }, - { }, -}; -MODULE_DEVICE_TABLE(spi, st7735r_id); - -static int st7735r_probe(struct spi_device *spi) -{ - struct device *dev = &spi->dev; - struct drm_device *drm; - struct mipi_dbi *mipi; - struct gpio_desc *dc; - u32 rotation = 0; - int ret; - - mipi = kzalloc(sizeof(*mipi), GFP_KERNEL); - if (!mipi) - return -ENOMEM; - - drm = &mipi->drm; - ret = devm_drm_dev_init(dev, drm, &st7735r_driver); - if (ret) { - kfree(mipi); - return ret; - } - - drm_mode_config_init(drm); - - mipi->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); - if (IS_ERR(mipi->reset)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'reset'\n"); - return PTR_ERR(mipi->reset); - } - - dc = devm_gpiod_get(dev, "dc", GPIOD_OUT_LOW); - if (IS_ERR(dc)) { - DRM_DEV_ERROR(dev, "Failed to get gpio 'dc'\n"); - return PTR_ERR(dc); - } - - mipi->backlight = devm_of_find_backlight(dev); - if (IS_ERR(mipi->backlight)) - return PTR_ERR(mipi->backlight); - - device_property_read_u32(dev, "rotation", &rotation); - - ret = mipi_dbi_spi_init(spi, mipi, dc); - if (ret) - return ret; - - /* Cannot read from Adafruit 1.8" display via SPI */ - mipi->read_commands = NULL; - - ret = mipi_dbi_init(mipi, &jd_t18003_t01_pipe_funcs, &jd_t18003_t01_mode, rotation); - if (ret) - return ret; - - drm_mode_config_reset(drm); - - ret = drm_dev_register(drm, 0); - if (ret) - return ret; - - spi_set_drvdata(spi, drm); - - drm_fbdev_generic_setup(drm, 0); - - return 0; -} - -static int st7735r_remove(struct spi_device *spi) -{ - struct drm_device *drm = spi_get_drvdata(spi); - - drm_dev_unplug(drm); - drm_atomic_helper_shutdown(drm); - - return 0; -} - -static void st7735r_shutdown(struct spi_device *spi) -{ - drm_atomic_helper_shutdown(spi_get_drvdata(spi)); -} - -static struct spi_driver st7735r_spi_driver = { - .driver = { - .name = "st7735r", - .owner = THIS_MODULE, - .of_match_table = st7735r_of_match, - }, - .id_table = st7735r_id, - .probe = st7735r_probe, - .remove = st7735r_remove, - .shutdown = st7735r_shutdown, -}; -module_spi_driver(st7735r_spi_driver); - -MODULE_DESCRIPTION("Sitronix ST7735R DRM driver"); -MODULE_AUTHOR("David Lechner <david@lechnology.com>"); -MODULE_LICENSE("GPL"); |