diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/panel/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c | 328 |
3 files changed, 340 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index de2f2a452be5..8d97d07c5871 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -217,6 +217,17 @@ config DRM_PANEL_NOVATEK_NT39016 Say Y here if you want to enable support for the panels built around the Novatek NT39016 display controller. +config DRM_PANEL_MANTIX_MLAF057WE51 + tristate "Mantix MLAF057WE51-X MIPI-DSI LCD panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for the Mantix + MLAF057WE51-X MIPI DSI panel as e.g. used in the Librem 5. It + has a resolution of 720x1440 pixels, a built in backlight and touch + controller. + config DRM_PANEL_OLIMEX_LCD_OLINUXINO tristate "Olimex LCD-OLinuXino panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index e45ceac6286f..15a4e7752951 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35510) += panel-novatek-nt35510.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o +obj-$(CONFIG_DRM_PANEL_MANTIX_MLAF057WE51) += panel-mantix-mlaf057we51.o obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o obj-$(CONFIG_DRM_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o obj-$(CONFIG_DRM_PANEL_OSD_OSD101T2587_53TS) += panel-osd-osd101t2587-53ts.o diff --git a/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c new file mode 100644 index 000000000000..3482e28e30fc --- /dev/null +++ b/drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c @@ -0,0 +1,328 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mantix MLAF057WE51 5.7" MIPI-DSI panel driver + * + * Copyright (C) Purism SPC 2020 + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +#define DRV_NAME "panel-mantix-mlaf057we51" + +/* Manufacturer specific Commands send via DSI */ +#define MANTIX_CMD_OTP_STOP_RELOAD_MIPI 0x41 +#define MANTIX_CMD_INT_CANCEL 0x4C + +struct mantix { + struct device *dev; + struct drm_panel panel; + struct gpio_desc *reset_gpio; + + struct regulator *avdd; + struct regulator *avee; + struct regulator *vddi; +}; + +static inline struct mantix *panel_to_mantix(struct drm_panel *panel) +{ + return container_of(panel, struct mantix, panel); +} + +#define dsi_generic_write_seq(dsi, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static int mantix_init_sequence(struct mantix *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct device *dev = ctx->dev; + + /* + * Init sequence was supplied by the panel vendor. + */ + dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A); + + dsi_generic_write_seq(dsi, MANTIX_CMD_INT_CANCEL, 0x03); + dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x03); + dsi_generic_write_seq(dsi, 0x80, 0xA9, 0x00); + + dsi_generic_write_seq(dsi, MANTIX_CMD_OTP_STOP_RELOAD_MIPI, 0x5A, 0x09); + dsi_generic_write_seq(dsi, 0x80, 0x64, 0x00, 0x64, 0x00, 0x00); + msleep(20); + + dev_dbg(dev, "Panel init sequence done\n"); + return 0; +} + +static int mantix_enable(struct drm_panel *panel) +{ + struct mantix *ctx = panel_to_mantix(panel); + struct device *dev = ctx->dev; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev); + int ret; + + ret = mantix_init_sequence(ctx); + if (ret < 0) { + dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret); + return ret; + } + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to exit sleep mode\n"); + return ret; + } + msleep(20); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret) + return ret; + usleep_range(10000, 12000); + + ret = mipi_dsi_turn_on_peripheral(dsi); + if (ret < 0) { + dev_err(dev, "Failed to turn on peripheral\n"); + return ret; + } + + return 0; +} + +static int mantix_disable(struct drm_panel *panel) +{ + struct mantix *ctx = panel_to_mantix(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + int ret; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) + dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret); + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) + dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret); + + + return 0; +} + +static int mantix_unprepare(struct drm_panel *panel) +{ + struct mantix *ctx = panel_to_mantix(panel); + + regulator_disable(ctx->avee); + regulator_disable(ctx->avdd); + /* T11 */ + usleep_range(5000, 6000); + regulator_disable(ctx->vddi); + /* T14 */ + msleep(50); + + return 0; +} + +static int mantix_prepare(struct drm_panel *panel) +{ + struct mantix *ctx = panel_to_mantix(panel); + int ret; + + /* Focaltech FT8006P, section 7.3.1 and 7.3.4 */ + dev_dbg(ctx->dev, "Resetting the panel\n"); + ret = regulator_enable(ctx->vddi); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable vddi supply: %d\n", ret); + return ret; + } + + /* T1 + T2 */ + usleep_range(8000, 10000); + + ret = regulator_enable(ctx->avdd); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable avdd supply: %d\n", ret); + return ret; + } + + /* T2d */ + usleep_range(3500, 4000); + ret = regulator_enable(ctx->avee); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable avee supply: %d\n", ret); + return ret; + } + + /* T3+T5 */ + usleep_range(10000, 12000); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(5150, 7000); + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + + /* T6 */ + msleep(50); + + return 0; +} + +static const struct drm_display_mode default_mode = { + .hdisplay = 720, + .hsync_start = 720 + 45, + .hsync_end = 720 + 45 + 14, + .htotal = 720 + 45 + 14 + 25, + .vdisplay = 1440, + .vsync_start = 1440 + 130, + .vsync_end = 1440 + 130 + 8, + .vtotal = 1440 + 130 + 8 + 106, + .clock = 85298, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 65, + .height_mm = 130, +}; + +static int mantix_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct mantix *ctx = panel_to_mantix(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &default_mode); + if (!mode) { + dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n", + default_mode.hdisplay, default_mode.vdisplay, + drm_mode_vrefresh(mode)); + return -ENOMEM; + } + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs mantix_drm_funcs = { + .disable = mantix_disable, + .unprepare = mantix_unprepare, + .prepare = mantix_prepare, + .enable = mantix_enable, + .get_modes = mantix_get_modes, +}; + +static int mantix_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct mantix *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) { + dev_err(dev, "cannot get reset gpio\n"); + return PTR_ERR(ctx->reset_gpio); + } + + mipi_dsi_set_drvdata(dsi, ctx); + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + + ctx->avdd = devm_regulator_get(dev, "avdd"); + if (IS_ERR(ctx->avdd)) + return dev_err_probe(dev, PTR_ERR(ctx->avdd), "Failed to request avdd regulator\n"); + + ctx->avee = devm_regulator_get(dev, "avee"); + if (IS_ERR(ctx->avee)) + return dev_err_probe(dev, PTR_ERR(ctx->avee), "Failed to request avee regulator\n"); + + ctx->vddi = devm_regulator_get(dev, "vddi"); + if (IS_ERR(ctx->vddi)) + return dev_err_probe(dev, PTR_ERR(ctx->vddi), "Failed to request vddi regulator\n"); + + drm_panel_init(&ctx->panel, dev, &mantix_drm_funcs, + DRM_MODE_CONNECTOR_DSI); + + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return ret; + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret); + drm_panel_remove(&ctx->panel); + return ret; + } + + dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", + default_mode.hdisplay, default_mode.vdisplay, + drm_mode_vrefresh(&default_mode), + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); + + return 0; +} + +static void mantix_shutdown(struct mipi_dsi_device *dsi) +{ + struct mantix *ctx = mipi_dsi_get_drvdata(dsi); + + drm_panel_unprepare(&ctx->panel); + drm_panel_disable(&ctx->panel); +} + +static int mantix_remove(struct mipi_dsi_device *dsi) +{ + struct mantix *ctx = mipi_dsi_get_drvdata(dsi); + + mantix_shutdown(dsi); + + mipi_dsi_detach(dsi); + drm_panel_remove(&ctx->panel); + + return 0; +} + +static const struct of_device_id mantix_of_match[] = { + { .compatible = "mantix,mlaf057we51-x" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mantix_of_match); + +static struct mipi_dsi_driver mantix_driver = { + .probe = mantix_probe, + .remove = mantix_remove, + .shutdown = mantix_shutdown, + .driver = { + .name = DRV_NAME, + .of_match_table = mantix_of_match, + }, +}; +module_mipi_dsi_driver(mantix_driver); + +MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>"); +MODULE_DESCRIPTION("DRM driver for Mantix MLAF057WE51-X MIPI DSI panel"); +MODULE_LICENSE("GPL v2"); |