diff options
Diffstat (limited to 'drivers/media/i2c/ccs/ccs-core.c')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 3479 |
1 files changed, 3479 insertions, 0 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c new file mode 100644 index 000000000000..b39ae5f8446b --- /dev/null +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -0,0 +1,3479 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * drivers/media/i2c/ccs/ccs-core.c + * + * Generic driver for MIPI CCS/SMIA/SMIA++ compliant camera sensors + * + * Copyright (C) 2020 Intel Corporation + * Copyright (C) 2010--2012 Nokia Corporation + * Contact: Sakari Ailus <sakari.ailus@linux.intel.com> + * + * Based on smiapp driver by Vimarsh Zutshi + * Based on jt8ev1.c by Vimarsh Zutshi + * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com> + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/firmware.h> +#include <linux/gpio.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/property.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/smiapp.h> +#include <linux/v4l2-mediabus.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-device.h> + +#include "ccs.h" + +#define CCS_ALIGN_DIM(dim, flags) \ + ((flags) & V4L2_SEL_FLAG_GE \ + ? ALIGN((dim), 2) \ + : (dim) & ~1) + +static struct ccs_limit_offset { + u16 lim; + u16 info; +} ccs_limit_offsets[CCS_L_LAST + 1]; + +/* + * ccs_module_idents - supported camera modules + */ +static const struct ccs_module_ident ccs_module_idents[] = { + CCS_IDENT_L(0x01, 0x022b, -1, "vs6555"), + CCS_IDENT_L(0x01, 0x022e, -1, "vw6558"), + CCS_IDENT_L(0x07, 0x7698, -1, "ovm7698"), + CCS_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"), + CCS_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"), + CCS_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk), + CCS_IDENT_L(0x0c, 0x213e, -1, "et8en2"), + CCS_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"), + CCS_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk), + CCS_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk), + CCS_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk), +}; + +#define CCS_DEVICE_FLAG_IS_SMIA BIT(0) + +struct ccs_device { + unsigned char flags; +}; + +static const char * const ccs_regulators[] = { "vcore", "vio", "vana" }; + +/* + * + * Dynamic Capability Identification + * + */ + +static void ccs_assign_limit(void *ptr, unsigned int width, u32 val) +{ + switch (width) { + case sizeof(u8): + *(u8 *)ptr = val; + break; + case sizeof(u16): + *(u16 *)ptr = val; + break; + case sizeof(u32): + *(u32 *)ptr = val; + break; + } +} + +static int ccs_limit_ptr(struct ccs_sensor *sensor, unsigned int limit, + unsigned int offset, void **__ptr) +{ + const struct ccs_limit *linfo; + + if (WARN_ON(limit >= CCS_L_LAST)) + return -EINVAL; + + linfo = &ccs_limits[ccs_limit_offsets[limit].info]; + + if (WARN_ON(!sensor->ccs_limits) || + WARN_ON(offset + ccs_reg_width(linfo->reg) > + ccs_limit_offsets[limit + 1].lim)) + return -EINVAL; + + *__ptr = sensor->ccs_limits + ccs_limit_offsets[limit].lim + offset; + + return 0; +} + +void ccs_replace_limit(struct ccs_sensor *sensor, + unsigned int limit, unsigned int offset, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + const struct ccs_limit *linfo; + void *ptr; + int ret; + + ret = ccs_limit_ptr(sensor, limit, offset, &ptr); + if (ret) + return; + + linfo = &ccs_limits[ccs_limit_offsets[limit].info]; + + dev_dbg(&client->dev, "quirk: 0x%8.8x \"%s\" %u = %d, 0x%x\n", + linfo->reg, linfo->name, offset, val, val); + + ccs_assign_limit(ptr, ccs_reg_width(linfo->reg), val); +} + +u32 ccs_get_limit(struct ccs_sensor *sensor, unsigned int limit, + unsigned int offset) +{ + void *ptr; + u32 val; + int ret; + + ret = ccs_limit_ptr(sensor, limit, offset, &ptr); + if (ret) + return 0; + + switch (ccs_reg_width(ccs_limits[ccs_limit_offsets[limit].info].reg)) { + case sizeof(u8): + val = *(u8 *)ptr; + break; + case sizeof(u16): + val = *(u16 *)ptr; + break; + case sizeof(u32): + val = *(u32 *)ptr; + break; + default: + WARN_ON(1); + return 0; + } + + return ccs_reg_conv(sensor, ccs_limits[limit].reg, val); +} + +static int ccs_read_all_limits(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + void *ptr, *alloc, *end; + unsigned int i, l; + int ret; + + kfree(sensor->ccs_limits); + sensor->ccs_limits = NULL; + + alloc = kzalloc(ccs_limit_offsets[CCS_L_LAST].lim, GFP_KERNEL); + if (!alloc) + return -ENOMEM; + + end = alloc + ccs_limit_offsets[CCS_L_LAST].lim; + + for (i = 0, l = 0, ptr = alloc; ccs_limits[i].size; i++) { + u32 reg = ccs_limits[i].reg; + unsigned int width = ccs_reg_width(reg); + unsigned int j; + + if (l == CCS_L_LAST) { + dev_err(&client->dev, + "internal error --- end of limit array\n"); + ret = -EINVAL; + goto out_err; + } + + for (j = 0; j < ccs_limits[i].size / width; + j++, reg += width, ptr += width) { + u32 val; + + ret = ccs_read_addr_noconv(sensor, reg, &val); + if (ret) + goto out_err; + + if (ptr + width > end) { + dev_err(&client->dev, + "internal error --- no room for regs\n"); + ret = -EINVAL; + goto out_err; + } + + if (!val && j) + break; + + ccs_assign_limit(ptr, width, val); + + dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n", + reg, ccs_limits[i].name, val, val); + } + + if (ccs_limits[i].flags & CCS_L_FL_SAME_REG) + continue; + + l++; + ptr = alloc + ccs_limit_offsets[l].lim; + } + + if (l != CCS_L_LAST) { + dev_err(&client->dev, + "internal error --- insufficient limits\n"); + ret = -EINVAL; + goto out_err; + } + + sensor->ccs_limits = alloc; + + if (CCS_LIM(sensor, SCALER_N_MIN) < 16) + ccs_replace_limit(sensor, CCS_L_SCALER_N_MIN, 0, 16); + + return 0; + +out_err: + kfree(alloc); + + return ret; +} + +static int ccs_read_frame_fmt(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + u8 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc; + unsigned int i; + int pixel_count = 0; + int line_count = 0; + + fmt_model_type = CCS_LIM(sensor, FRAME_FORMAT_MODEL_TYPE); + fmt_model_subtype = CCS_LIM(sensor, FRAME_FORMAT_MODEL_SUBTYPE); + + ncol_desc = (fmt_model_subtype + & CCS_FRAME_FORMAT_MODEL_SUBTYPE_COLUMNS_MASK) + >> CCS_FRAME_FORMAT_MODEL_SUBTYPE_COLUMNS_SHIFT; + nrow_desc = fmt_model_subtype + & CCS_FRAME_FORMAT_MODEL_SUBTYPE_ROWS_MASK; + + dev_dbg(&client->dev, "format_model_type %s\n", + fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_2_BYTE + ? "2 byte" : + fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_4_BYTE + ? "4 byte" : "is simply bad"); + + dev_dbg(&client->dev, "%u column and %u row descriptors\n", + ncol_desc, nrow_desc); + + for (i = 0; i < ncol_desc + nrow_desc; i++) { + u32 desc; + u32 pixelcode; + u32 pixels; + char *which; + char *what; + + if (fmt_model_type == CCS_FRAME_FORMAT_MODEL_TYPE_2_BYTE) { + desc = CCS_LIM_AT(sensor, FRAME_FORMAT_DESCRIPTOR, i); + + pixelcode = + (desc + & CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_MASK) + >> CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_SHIFT; + pixels = desc & CCS_FRAME_FORMAT_DESCRIPTOR_PIXELS_MASK; + } else if (fmt_model_type + == CCS_FRAME_FORMAT_MODEL_TYPE_4_BYTE) { + desc = CCS_LIM_AT(sensor, FRAME_FORMAT_DESCRIPTOR_4, i); + + pixelcode = + (desc + & CCS_FRAME_FORMAT_DESCRIPTOR_4_PCODE_MASK) + >> CCS_FRAME_FORMAT_DESCRIPTOR_4_PCODE_SHIFT; + pixels = desc & + CCS_FRAME_FORMAT_DESCRIPTOR_4_PIXELS_MASK; + } else { + dev_dbg(&client->dev, + "invalid frame format model type %d\n", + fmt_model_type); + return -EINVAL; + } + + if (i < ncol_desc) + which = "columns"; + else + which = "rows"; + + switch (pixelcode) { + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_EMBEDDED: + what = "embedded"; + break; + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_DUMMY_PIXEL: + what = "dummy"; + break; + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_BLACK_PIXEL: + what = "black"; + break; + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_DARK_PIXEL: + what = "dark"; + break; + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL: + what = "visible"; + break; + default: + what = "invalid"; + break; + } + + dev_dbg(&client->dev, + "%s pixels: %d %s (pixelcode %u)\n", + what, pixels, which, pixelcode); + + if (i < ncol_desc) { + if (pixelcode == + CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL) + sensor->visible_pixel_start = pixel_count; + pixel_count += pixels; + continue; + } + + /* Handle row descriptors */ + switch (pixelcode) { + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_EMBEDDED: + if (sensor->embedded_end) + break; + sensor->embedded_start = line_count; + sensor->embedded_end = line_count + pixels; + break; + case CCS_FRAME_FORMAT_DESCRIPTOR_PCODE_VISIBLE_PIXEL: + sensor->image_start = line_count; + break; + } + line_count += pixels; + } + + if (sensor->embedded_end > sensor->image_start) { + dev_dbg(&client->dev, + "adjusting image start line to %u (was %u)\n", + sensor->embedded_end, sensor->image_start); + sensor->image_start = sensor->embedded_end; + } + + dev_dbg(&client->dev, "embedded data from lines %d to %d\n", + sensor->embedded_start, sensor->embedded_end); + dev_dbg(&client->dev, "image data starts at line %d\n", + sensor->image_start); + + return 0; +} + +static int ccs_pll_configure(struct ccs_sensor *sensor) +{ + struct ccs_pll *pll = &sensor->pll; + int rval; + + rval = ccs_write(sensor, VT_PIX_CLK_DIV, pll->vt_bk.pix_clk_div); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, VT_SYS_CLK_DIV, pll->vt_bk.sys_clk_div); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, PRE_PLL_CLK_DIV, pll->vt_fr.pre_pll_clk_div); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, PLL_MULTIPLIER, pll->vt_fr.pll_multiplier); + if (rval < 0) + return rval; + + /* Lane op clock ratio does not apply here. */ + rval = ccs_write(sensor, REQUESTED_LINK_RATE, + DIV_ROUND_UP(pll->op_bk.sys_clk_freq_hz, + 1000000 / 256 / 256) * + (pll->flags & CCS_PLL_FLAG_LANE_SPEED_MODEL ? + sensor->pll.csi2.lanes : 1) << + (pll->flags & CCS_PLL_FLAG_OP_SYS_DDR ? 1 : 0)); + if (rval < 0 || sensor->pll.flags & CCS_PLL_FLAG_NO_OP_CLOCKS) + return rval; + + rval = ccs_write(sensor, OP_PIX_CLK_DIV, pll->op_bk.pix_clk_div); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, OP_SYS_CLK_DIV, pll->op_bk.sys_clk_div); + if (rval < 0) + return rval; + + if (!(pll->flags & CCS_PLL_FLAG_DUAL_PLL)) + return 0; + + rval = ccs_write(sensor, PLL_MODE, CCS_PLL_MODE_DUAL); + if (rval < 0) + return rval; + + rval = ccs_write(sensor, OP_PRE_PLL_CLK_DIV, + pll->op_fr.pre_pll_clk_div); + if (rval < 0) + return rval; + + return ccs_write(sensor, OP_PLL_MULTIPLIER, pll->op_fr.pll_multiplier); +} + +static int ccs_pll_try(struct ccs_sensor *sensor, struct ccs_pll *pll) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + struct ccs_pll_limits lim = { + .vt_fr = { + .min_pre_pll_clk_div = CCS_LIM(sensor, MIN_PRE_PLL_CLK_DIV), + .max_pre_pll_clk_div = CCS_LIM(sensor, MAX_PRE_PLL_CLK_DIV), + .min_pll_ip_clk_freq_hz = CCS_LIM(sensor, MIN_PLL_IP_CLK_FREQ_MHZ), + .max_pll_ip_clk_freq_hz = CCS_LIM(sensor, MAX_PLL_IP_CLK_FREQ_MHZ), + .min_pll_multiplier = CCS_LIM(sensor, MIN_PLL_MULTIPLIER), + .max_pll_multiplier = CCS_LIM(sensor, MAX_PLL_MULTIPLIER), + .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_PLL_OP_CLK_FREQ_MHZ), + .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_PLL_OP_CLK_FREQ_MHZ), + }, + .op_fr = { + .min_pre_pll_clk_div = CCS_LIM(sensor, MIN_OP_PRE_PLL_CLK_DIV), + .max_pre_pll_clk_div = CCS_LIM(sensor, MAX_OP_PRE_PLL_CLK_DIV), + .min_pll_ip_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_IP_CLK_FREQ_MHZ), + .max_pll_ip_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_IP_CLK_FREQ_MHZ), + .min_pll_multiplier = CCS_LIM(sensor, MIN_OP_PLL_MULTIPLIER), + .max_pll_multiplier = CCS_LIM(sensor, MAX_OP_PLL_MULTIPLIER), + .min_pll_op_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PLL_OP_CLK_FREQ_MHZ), + .max_pll_op_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PLL_OP_CLK_FREQ_MHZ), + }, + .op_bk = { + .min_sys_clk_div = CCS_LIM(sensor, MIN_OP_SYS_CLK_DIV), + .max_sys_clk_div = CCS_LIM(sensor, MAX_OP_SYS_CLK_DIV), + .min_pix_clk_div = CCS_LIM(sensor, MIN_OP_PIX_CLK_DIV), + .max_pix_clk_div = CCS_LIM(sensor, MAX_OP_PIX_CLK_DIV), + .min_sys_clk_freq_hz = CCS_LIM(sensor, MIN_OP_SYS_CLK_FREQ_MHZ), + .max_sys_clk_freq_hz = CCS_LIM(sensor, MAX_OP_SYS_CLK_FREQ_MHZ), + .min_pix_clk_freq_hz = CCS_LIM(sensor, MIN_OP_PIX_CLK_FREQ_MHZ), + .max_pix_clk_freq_hz = CCS_LIM(sensor, MAX_OP_PIX_CLK_FREQ_MHZ), + }, + .vt_bk = { + .min_sys_clk_div = CCS_LIM(sensor, MIN_VT_SYS_CLK_DIV), + .max_sys_clk_div = CCS_LIM(sensor, MAX_VT_SYS_CLK_DIV), + .min_pix_clk_div = CCS_LIM(sensor, MIN_VT_PIX_CLK_DIV), + .max_pix_clk_div = CCS_LIM(sensor, MAX_VT_PIX_CLK_DIV), + .min_sys_clk_freq_hz = CCS_LIM(sensor, MIN_VT_SYS_CLK_FREQ_MHZ), + .max_sys_clk_freq_hz = CCS_LIM(sensor, MAX_VT_SYS_CLK_FREQ_MHZ), + .min_pix_clk_freq_hz = CCS_LIM(sensor, MIN_VT_PIX_CLK_FREQ_MHZ), + .max_pix_clk_freq_hz = CCS_LIM(sensor, MAX_VT_PIX_CLK_FREQ_MHZ), + }, + .min_line_length_pck_bin = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK_BIN), + .min_line_length_pck = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK), + }; + + return ccs_pll_calculate(&client->dev, &lim, pll); +} + +static int ccs_pll_update(struct ccs_sensor *sensor) +{ + struct ccs_pll *pll = &sensor->pll; + int rval; + + pll->binning_horizontal = sensor->binning_horizontal; + pll->binning_vertical = sensor->binning_vertical; + pll->link_freq = + sensor->link_freq->qmenu_int[sensor->link_freq->val]; + pll->scale_m = sensor->scale_m; + pll->bits_per_pixel = sensor->csi_format->compressed; + + rval = ccs_pll_try(sensor, pll); + if (rval < 0) + return rval; + + __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray, + pll->pixel_rate_pixel_array); + __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi); + + return 0; +} + + +/* + * + * V4L2 Controls handling + * + */ + +static void __ccs_update_exposure_limits(struct ccs_sensor *sensor) +{ + struct v4l2_ctrl *ctrl = sensor->exposure; + int max; + + max = sensor->pixel_array->crop[CCS_PA_PAD_SRC].height + + sensor->vblank->val + - CCS_LIM(sensor, COARSE_INTEGRATION_TIME_MAX_MARGIN); + + __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max); +} + +/* + * Order matters. + * + * 1. Bits-per-pixel, descending. + * 2. Bits-per-pixel compressed, descending. + * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel + * orders must be defined. + */ +static const struct ccs_csi_data_format ccs_csi_data_formats[] = { + { MEDIA_BUS_FMT_SGRBG16_1X16, 16, 16, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB16_1X16, 16, 16, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR16_1X16, 16, 16, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG16_1X16, 16, 16, CCS_PIXEL_ORDER_GBRG, }, + { MEDIA_BUS_FMT_SGRBG14_1X14, 14, 14, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB14_1X14, 14, 14, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR14_1X14, 14, 14, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG14_1X14, 14, 14, CCS_PIXEL_ORDER_GBRG, }, + { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, CCS_PIXEL_ORDER_GBRG, }, + { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, CCS_PIXEL_ORDER_GBRG, }, + { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, CCS_PIXEL_ORDER_GBRG, }, + { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, CCS_PIXEL_ORDER_GRBG, }, + { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, CCS_PIXEL_ORDER_RGGB, }, + { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, CCS_PIXEL_ORDER_BGGR, }, + { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, CCS_PIXEL_ORDER_GBRG, }, +}; + +static const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" }; + +#define to_csi_format_idx(fmt) (((unsigned long)(fmt) \ + - (unsigned long)ccs_csi_data_formats) \ + / sizeof(*ccs_csi_data_formats)) + +static u32 ccs_pixel_order(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int flip = 0; + + if (sensor->hflip) { + if (sensor->hflip->val) + flip |= CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR; + + if (sensor->vflip->val) + flip |= CCS_IMAGE_ORIENTATION_VERTICAL_FLIP; + } + + flip ^= sensor->hvflip_inv_mask; + + dev_dbg(&client->dev, "flip %d\n", flip); + return sensor->default_pixel_order ^ flip; +} + +static void ccs_update_mbus_formats(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + unsigned int csi_format_idx = + to_csi_format_idx(sensor->csi_format) & ~3; + unsigned int internal_csi_format_idx = + to_csi_format_idx(sensor->internal_csi_format) & ~3; + unsigned int pixel_order = ccs_pixel_order(sensor); + + if (WARN_ON_ONCE(max(internal_csi_format_idx, csi_format_idx) + + pixel_order >= ARRAY_SIZE(ccs_csi_data_formats))) + return; + + sensor->mbus_frame_fmts = + sensor->default_mbus_frame_fmts << pixel_order; + sensor->csi_format = + &ccs_csi_data_formats[csi_format_idx + pixel_order]; + sensor->internal_csi_format = + &ccs_csi_data_formats[internal_csi_format_idx + + pixel_order]; + + dev_dbg(&client->dev, "new pixel order %s\n", + pixel_order_str[pixel_order]); +} + +static const char * const ccs_test_patterns[] = { + "Disabled", + "Solid Colour", + "Eight Vertical Colour Bars", + "Colour Bars With Fade to Grey", + "Pseudorandom Sequence (PN9)", +}; + +static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct ccs_sensor *sensor = + container_of(ctrl->handler, struct ccs_subdev, ctrl_handler) + ->sensor; + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int pm_status; + u32 orient = 0; + unsigned int i; + int exposure; + int rval; + + switch (ctrl->id) { + case V4L2_CID_HFLIP: + case V4L2_CID_VFLIP: + if (sensor->streaming) + return -EBUSY; + + if (sensor->hflip->val) + orient |= CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR; + + if (sensor->vflip->val) + orient |= CCS_IMAGE_ORIENTATION_VERTICAL_FLIP; + + orient ^= sensor->hvflip_inv_mask; + + ccs_update_mbus_formats(sensor); + + break; + case V4L2_CID_VBLANK: + exposure = sensor->exposure->val; + + __ccs_update_exposure_limits(sensor); + + if (exposure > sensor->exposure->maximum) { + sensor->exposure->val = sensor->exposure->maximum; + rval = ccs_set_ctrl(sensor->exposure); + if (rval < 0) + return rval; + } + + break; + case V4L2_CID_LINK_FREQ: + if (sensor->streaming) + return -EBUSY; + + rval = ccs_pll_update(sensor); + if (rval) + return rval; + + return 0; + case V4L2_CID_TEST_PATTERN: + for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) + v4l2_ctrl_activate( + sensor->test_data[i], + ctrl->val == + V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR); + + break; + } + + pm_status = pm_runtime_get_if_active(&client->dev, true); + if (!pm_status) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ANALOGUE_GAIN: + rval = ccs_write(sensor, ANALOG_GAIN_CODE_GLOBAL, ctrl->val); + + break; + case V4L2_CID_EXPOSURE: + rval = ccs_write(sensor, COARSE_INTEGRATION_TIME, ctrl->val); + + break; + case V4L2_CID_HFLIP: + case V4L2_CID_VFLIP: + rval = ccs_write(sensor, IMAGE_ORIENTATION, orient); + + break; + case V4L2_CID_VBLANK: + rval = ccs_write(sensor, FRAME_LENGTH_LINES, + sensor->pixel_array->crop[ + CCS_PA_PAD_SRC].height + + ctrl->val); + + break; + case V4L2_CID_HBLANK: + rval = ccs_write(sensor, LINE_LENGTH_PCK, + sensor->pixel_array->crop[CCS_PA_PAD_SRC].width + + ctrl->val); + + break; + case V4L2_CID_TEST_PATTERN: + rval = ccs_write(sensor, TEST_PATTERN_MODE, ctrl->val); + + break; + case V4L2_CID_TEST_PATTERN_RED: + rval = ccs_write(sensor, TEST_DATA_RED, ctrl->val); + + break; + case V4L2_CID_TEST_PATTERN_GREENR: + rval = ccs_write(sensor, TEST_DATA_GREENR, ctrl->val); + + break; + case V4L2_CID_TEST_PATTERN_BLUE: + rval = ccs_write(sensor, TEST_DATA_BLUE, ctrl->val); + + break; + case V4L2_CID_TEST_PATTERN_GREENB: + rval = ccs_write(sensor, TEST_DATA_GREENB, ctrl->val); + + break; + case V4L2_CID_PIXEL_RATE: + /* For v4l2_ctrl_s_ctrl_int64() used internally. */ + rval = 0; + + break; + default: + rval = -EINVAL; + } + + if (pm_status > 0) { + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + } + + return rval; +} + +static const struct v4l2_ctrl_ops ccs_ctrl_ops = { + .s_ctrl = ccs_set_ctrl, +}; + +static int ccs_init_controls(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12); + if (rval) + return rval; + + sensor->pixel_array->ctrl_handler.lock = &sensor->mutex; + + sensor->analog_gain = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_ANALOGUE_GAIN, + CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN), + CCS_LIM(sensor, ANALOG_GAIN_CODE_MAX), + max(CCS_LIM(sensor, ANALOG_GAIN_CODE_STEP), 1U), + CCS_LIM(sensor, ANALOG_GAIN_CODE_MIN)); + + /* Exposure limits will be updated soon, use just something here. */ + sensor->exposure = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_EXPOSURE, 0, 0, 1, 0); + + sensor->hflip = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_HFLIP, 0, 1, 1, 0); + sensor->vflip = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_VFLIP, 0, 1, 1, 0); + + sensor->vblank = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_VBLANK, 0, 1, 1, 0); + + if (sensor->vblank) + sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE; + + sensor->hblank = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_HBLANK, 0, 1, 1, 0); + + if (sensor->hblank) + sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE; + + sensor->pixel_rate_parray = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); + + v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler, + &ccs_ctrl_ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(ccs_test_patterns) - 1, + 0, 0, ccs_test_patterns); + + if (sensor->pixel_array->ctrl_handler.error) { + dev_err(&client->dev, + "pixel array controls initialization failed (%d)\n", + sensor->pixel_array->ctrl_handler.error); + return sensor->pixel_array->ctrl_handler.error; + } + + sensor->pixel_array->sd.ctrl_handler = + &sensor->pixel_array->ctrl_handler; + + v4l2_ctrl_cluster(2, &sensor->hflip); + + rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0); + if (rval) + return rval; + + sensor->src->ctrl_handler.lock = &sensor->mutex; + + sensor->pixel_rate_csi = v4l2_ctrl_new_std( + &sensor->src->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1); + + if (sensor->src->ctrl_handler.error) { + dev_err(&client->dev, + "src controls initialization failed (%d)\n", + sensor->src->ctrl_handler.error); + return sensor->src->ctrl_handler.error; + } + + sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler; + + return 0; +} + +/* + * For controls that require information on available media bus codes + * and linke frequencies. + */ +static int ccs_init_late_controls(struct ccs_sensor *sensor) +{ + unsigned long *valid_link_freqs = &sensor->valid_link_freqs[ + sensor->csi_format->compressed - sensor->compressed_min_bpp]; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) { + int max_value = (1 << sensor->csi_format->width) - 1; + + sensor->test_data[i] = v4l2_ctrl_new_std( + &sensor->pixel_array->ctrl_handler, + &ccs_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i, + 0, max_value, 1, max_value); + } + + sensor->link_freq = v4l2_ctrl_new_int_menu( + &sensor->src->ctrl_handler, &ccs_ctrl_ops, + V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs), + __ffs(*valid_link_freqs), sensor->hwcfg.op_sys_clock); + + return sensor->src->ctrl_handler.error; +} + +static void ccs_free_controls(struct ccs_sensor *sensor) +{ + unsigned int i; + + for (i = 0; i < sensor->ssds_used; i++) + v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler); +} + +static int ccs_get_mbus_formats(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + struct ccs_pll *pll = &sensor->pll; + u8 compressed_max_bpp = 0; + unsigned int type, n; + unsigned int i, pixel_order; + int rval; + + type = CCS_LIM(sensor, DATA_FORMAT_MODEL_TYPE); + + dev_dbg(&client->dev, "data_format_model_type %d\n", type); + + rval = ccs_read(sensor, PIXEL_ORDER, &pixel_order); + if (rval) + return rval; + + if (pixel_order >= ARRAY_SIZE(pixel_order_str)) { + dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order); + return -EINVAL; + } + + dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order, + pixel_order_str[pixel_order]); + + switch (type) { + case CCS_DATA_FORMAT_MODEL_TYPE_NORMAL: + n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N; + break; + case CCS_DATA_FORMAT_MODEL_TYPE_EXTENDED: + n = CCS_LIM_DATA_FORMAT_DESCRIPTOR_MAX_N + 1; + break; + default: + return -EINVAL; + } + + sensor->default_pixel_order = pixel_order; + sensor->mbus_frame_fmts = 0; + + for (i = 0; i < n; i++) { + unsigned int fmt, j; + + fmt = CCS_LIM_AT(sensor, DATA_FORMAT_DESCRIPTOR, i); + + dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n", + i, fmt >> 8, (u8)fmt); + + for (j = 0; j < ARRAY_SIZE(ccs_csi_data_formats); j++) { + const struct ccs_csi_data_format *f = + &ccs_csi_data_formats[j]; + + if (f->pixel_order != CCS_PIXEL_ORDER_GRBG) + continue; + + if (f->width != fmt >> + CCS_DATA_FORMAT_DESCRIPTOR_UNCOMPRESSED_SHIFT || + f->compressed != + (fmt & CCS_DATA_FORMAT_DESCRIPTOR_COMPRESSED_MASK)) + continue; + + dev_dbg(&client->dev, "jolly good! %d\n", j); + + sensor->default_mbus_frame_fmts |= 1 << j; + } + } + + /* Figure out which BPP values can be used with which formats. */ + pll->binning_horizontal = 1; + pll->binning_vertical = 1; + pll->scale_m = sensor->scale_m; + + for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) { + sensor->compressed_min_bpp = + min(ccs_csi_data_formats[i].compressed, + sensor->compressed_min_bpp); + compressed_max_bpp = + max(ccs_csi_data_formats[i].compressed, + compressed_max_bpp); + } + + sensor->valid_link_freqs = devm_kcalloc( + &client->dev, + compressed_max_bpp - sensor->compressed_min_bpp + 1, + sizeof(*sensor->valid_link_freqs), GFP_KERNEL); + if (!sensor->valid_link_freqs) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) { + const struct ccs_csi_data_format *f = + &ccs_csi_data_formats[i]; + unsigned long *valid_link_freqs = + &sensor->valid_link_freqs[ + f->compressed - sensor->compressed_min_bpp]; + unsigned int j; + + if (!(sensor->default_mbus_frame_fmts & 1 << i)) + continue; + + pll->bits_per_pixel = f->compressed; + + for (j = 0; sensor->hwcfg.op_sys_clock[j]; j++) { + pll->link_freq = sensor->hwcfg.op_sys_clock[j]; + + rval = ccs_pll_try(sensor, pll); + dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n", + pll->link_freq, pll->bits_per_pixel, + rval ? "not ok" : "ok"); + if (rval) + continue; + + set_bit(j, valid_link_freqs); + } + + if (!*valid_link_freqs) { + dev_info(&client->dev, + "no valid link frequencies for %u bpp\n", + f->compressed); + sensor->default_mbus_frame_fmts &= ~BIT(i); + continue; + } + + if (!sensor->csi_format + || f->width > sensor->csi_format->width + || (f->width == sensor->csi_format->width + && f->compressed > sensor->csi_format->compressed)) { + sensor->csi_format = f; + sensor->internal_csi_format = f; + } + } + + if (!sensor->csi_format) { + dev_err(&client->dev, "no supported mbus code found\n"); + return -EINVAL; + } + + ccs_update_mbus_formats(sensor); + + return 0; +} + +static void ccs_update_blanking(struct ccs_sensor *sensor) +{ + struct v4l2_ctrl *vblank = sensor->vblank; + struct v4l2_ctrl *hblank = sensor->hblank; + uint16_t min_fll, max_fll, min_llp, max_llp, min_lbp; + int min, max; + + if (sensor->binning_vertical > 1 || sensor->binning_horizontal > 1) { + min_fll = CCS_LIM(sensor, MIN_FRAME_LENGTH_LINES_BIN); + max_fll = CCS_LIM(sensor, MAX_FRAME_LENGTH_LINES_BIN); + min_llp = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK_BIN); + max_llp = CCS_LIM(sensor, MAX_LINE_LENGTH_PCK_BIN); + min_lbp = CCS_LIM(sensor, MIN_LINE_BLANKING_PCK_BIN); + } else { + min_fll = CCS_LIM(sensor, MIN_FRAME_LENGTH_LINES); + max_fll = CCS_LIM(sensor, MAX_FRAME_LENGTH_LINES); + min_llp = CCS_LIM(sensor, MIN_LINE_LENGTH_PCK); + max_llp = CCS_LIM(sensor, MAX_LINE_LENGTH_PCK); + min_lbp = CCS_LIM(sensor, MIN_LINE_BLANKING_PCK); + } + + min = max_t(int, + CCS_LIM(sensor, MIN_FRAME_BLANKING_LINES), + min_fll - sensor->pixel_array->crop[CCS_PA_PAD_SRC].height); + max = max_fll - sensor->pixel_array->crop[CCS_PA_PAD_SRC].height; + + __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min); + + min = max_t(int, + min_llp - sensor->pixel_array->crop[CCS_PA_PAD_SRC].width, + min_lbp); + max = max_llp - sensor->pixel_array->crop[CCS_PA_PAD_SRC].width; + + __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min); + + __ccs_update_exposure_limits(sensor); +} + +static int ccs_pll_blanking_update(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + rval = ccs_pll_update(sensor); + if (rval < 0) + return rval; + + /* Output from pixel array, including blanking */ + ccs_update_blanking(sensor); + + dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val); + dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val); + + dev_dbg(&client->dev, "real timeperframe\t100/%d\n", + sensor->pll.pixel_rate_pixel_array / + ((sensor->pixel_array->crop[CCS_PA_PAD_SRC].width + + sensor->hblank->val) * + (sensor->pixel_array->crop[CCS_PA_PAD_SRC].height + + sensor->vblank->val) / 100)); + + return 0; +} + +/* + * + * SMIA++ NVM handling + * + */ + +static int ccs_read_nvm_page(struct ccs_sensor *sensor, u32 p, u8 *nvm, + u8 *status) +{ + unsigned int i; + int rval; + u32 s; + + *status = 0; + + rval = ccs_write(sensor, DATA_TRANSFER_IF_1_PAGE_SELECT, p); + if (rval) + return rval; + + rval = ccs_write(sensor, DATA_TRANSFER_IF_1_CTRL, + CCS_DATA_TRANSFER_IF_1_CTRL_ENABLE); + if (rval) + return rval; + + rval = ccs_read(sensor, DATA_TRANSFER_IF_1_STATUS, &s); + if (rval) + return rval; + + if (s & CCS_DATA_TRANSFER_IF_1_STATUS_IMPROPER_IF_USAGE) { + *status = s; + return -ENODATA; + } + + if (CCS_LIM(sensor, DATA_TRANSFER_IF_CAPABILITY) & + CCS_DATA_TRANSFER_IF_CAPABILITY_POLLING) { + for (i = 1000; i > 0; i--) { + if (s & CCS_DATA_TRANSFER_IF_1_STATUS_READ_IF_READY) + break; + + rval = ccs_read(sensor, DATA_TRANSFER_IF_1_STATUS, &s); + if (rval) + return rval; + } + + if (!i) + return -ETIMEDOUT; + } + + for (i = 0; i <= CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P; i++) { + u32 v; + + rval = ccs_read(sensor, DATA_TRANSFER_IF_1_DATA(i), &v); + if (rval) + return rval; + + *nvm++ = v; + } + + return 0; +} + +static int ccs_read_nvm(struct ccs_sensor *sensor, unsigned char *nvm, + size_t nvm_size) +{ + u8 status = 0; + u32 p; + int rval = 0, rval2; + + for (p = 0; p < nvm_size / (CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1) + && !rval; p++) { + rval = ccs_read_nvm_page(sensor, p, nvm, &status); + nvm += CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1; + } + + if (rval == -ENODATA && + status & CCS_DATA_TRANSFER_IF_1_STATUS_IMPROPER_IF_USAGE) + rval = 0; + + rval2 = ccs_write(sensor, DATA_TRANSFER_IF_1_CTRL, 0); + if (rval < 0) + return rval; + else + return rval2 ?: p * (CCS_LIM_DATA_TRANSFER_IF_1_DATA_MAX_P + 1); +} + +/* + * + * SMIA++ CCI address control + * + */ +static int ccs_change_cci_addr(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + u32 val; + + client->addr = sensor->hwcfg.i2c_addr_dfl; + + rval = ccs_write(sensor, CCI_ADDRESS_CTRL, + sensor->hwcfg.i2c_addr_alt << 1); + if (rval) + return rval; + + client->addr = sensor->hwcfg.i2c_addr_alt; + + /* verify addr change went ok */ + rval = ccs_read(sensor, CCI_ADDRESS_CTRL, &val); + if (rval) + return rval; + + if (val != sensor->hwcfg.i2c_addr_alt << 1) + return -ENODEV; + + return 0; +} + +/* + * + * SMIA++ Mode Control + * + */ +static int ccs_setup_flash_strobe(struct ccs_sensor *sensor) +{ + struct ccs_flash_strobe_parms *strobe_setup; + unsigned int ext_freq = sensor->hwcfg.ext_clk; + u32 tmp; + u32 strobe_adjustment; + u32 strobe_width_high_rs; + int rval; + + strobe_setup = sensor->hwcfg.strobe_setup; + + /* + * How to calculate registers related to strobe length. Please + * do not change, or if you do at least know what you're + * doing. :-) + * + * Sakari Ailus <sakari.ailus@linux.intel.com> 2010-10-25 + * + * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl + * / EXTCLK freq [Hz]) * flash_strobe_adjustment + * + * tFlash_strobe_width_ctrl E N, [1 - 0xffff] + * flash_strobe_adjustment E N, [1 - 0xff] + * + * The formula above is written as below to keep it on one + * line: + * + * l / 10^6 = w / e * a + * + * Let's mark w * a by x: + * + * x = w * a + * + * Thus, we get: + * + * x = l * e / 10^6 + * + * The strobe width must be at least as long as requested, + * thus rounding upwards is needed. + * + * x = (l * e + 10^6 - 1) / 10^6 + * ----------------------------- + * + * Maximum possible accuracy is wanted at all times. Thus keep + * a as small as possible. + * + * Calculate a, assuming maximum w, with rounding upwards: + * + * a = (x + (2^16 - 1) - 1) / (2^16 - 1) + * ------------------------------------- + * + * Thus, we also get w, with that a, with rounding upwards: + * + * w = (x + a - 1) / a + * ------------------- + * + * To get limits: + * + * x E [1, (2^16 - 1) * (2^8 - 1)] + * + * Substituting maximum x to the original formula (with rounding), + * the maximum l is thus + * + * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1 + * + * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e + * -------------------------------------------------- + * + * flash_strobe_length must be clamped between 1 and + * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq. + * + * Then, + * + * flash_strobe_adjustment = ((flash_strobe_length * + * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1) + * + * tFlash_strobe_width_ctrl = ((flash_strobe_length * + * EXTCLK freq + 10^6 - 1) / 10^6 + + * flash_strobe_adjustment - 1) / flash_strobe_adjustment + */ + tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) - + 1000000 + 1, ext_freq); + strobe_setup->strobe_width_high_us = + clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp); + + tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq + + 1000000 - 1), 1000000ULL); + strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1); + strobe_width_high_rs = (tmp + strobe_adjustment - 1) / + strobe_adjustment; + + rval = ccs_write(sensor, FLASH_MODE_RS, strobe_setup->mode); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, FLASH_STROBE_ADJUSTMENT, strobe_adjustment); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, TFLASH_STROBE_WIDTH_HIGH_RS_CTRL, + strobe_width_high_rs); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, TFLASH_STROBE_DELAY_RS_CTRL, + strobe_setup->strobe_delay); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, FLASH_STROBE_START_POINT, + strobe_setup->stobe_start_point); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, FLASH_TRIGGER_RS, strobe_setup->trigger); + +out: + sensor->hwcfg.strobe_setup->trigger = 0; + + return rval; +} + +/* ----------------------------------------------------------------------------- + * Power management + */ + +static int ccs_write_msr_regs(struct ccs_sensor *sensor) +{ + int rval; + + rval = ccs_write_data_regs(sensor, + sensor->sdata.sensor_manufacturer_regs, + sensor->sdata.num_sensor_manufacturer_regs); + if (rval) + return rval; + + return ccs_write_data_regs(sensor, + sensor->mdata.module_manufacturer_regs, + sensor->mdata.num_module_manufacturer_regs); +} + +static int ccs_power_on(struct device *dev) +{ + struct v4l2_subdev *subdev = dev_get_drvdata(dev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + /* + * The sub-device related to the I2C device is always the + * source one, i.e. ssds[0]. + */ + struct ccs_sensor *sensor = + container_of(ssd, struct ccs_sensor, ssds[0]); + const struct ccs_device *ccsdev = device_get_match_data(dev); + unsigned int sleep; + int rval; + + rval = regulator_bulk_enable(ARRAY_SIZE(ccs_regulators), + sensor->regulators); + if (rval) { + dev_err(dev, "failed to enable vana regulator\n"); + return rval; + } + + rval = clk_prepare_enable(sensor->ext_clk); + if (rval < 0) { + dev_dbg(dev, "failed to enable xclk\n"); + goto out_xclk_fail; + } + + gpiod_set_value(sensor->reset, 0); + gpiod_set_value(sensor->xshutdown, 1); + + if (ccsdev->flags & CCS_DEVICE_FLAG_IS_SMIA) + sleep = SMIAPP_RESET_DELAY(sensor->hwcfg.ext_clk); + else + sleep = 5000; + + usleep_range(sleep, sleep); + + /* + * Failures to respond to the address change command have been noticed. + * Those failures seem to be caused by the sensor requiring a longer + * boot time than advertised. An additional 10ms delay seems to work + * around the issue, but the SMIA++ I2C write retry hack makes the delay + * unnecessary. The failures need to be investigated to find a proper + * fix, and a delay will likely need to be added here if the I2C write + * retry hack is reverted before the root cause of the boot time issue + * is found. + */ + + if (sensor->hwcfg.i2c_addr_alt) { + rval = ccs_change_cci_addr(sensor); + if (rval) { + dev_err(dev, "cci address change error\n"); + goto out_cci_addr_fail; + } + } + + rval = ccs_write(sensor, SOFTWARE_RESET, CCS_SOFTWARE_RESET_ON); + if (rval < 0) { + dev_err(dev, "software reset failed\n"); + goto out_cci_addr_fail; + } + + if (sensor->hwcfg.i2c_addr_alt) { + rval = ccs_change_cci_addr(sensor); + if (rval) { + dev_err(dev, "cci address change error\n"); + goto out_cci_addr_fail; + } + } + + rval = ccs_write(sensor, COMPRESSION_MODE, + CCS_COMPRESSION_MODE_DPCM_PCM_SIMPLE); + if (rval) { + dev_err(dev, "compression mode set failed\n"); + goto out_cci_addr_fail; + } + + rval = ccs_write(sensor, EXTCLK_FREQUENCY_MHZ, + sensor->hwcfg.ext_clk / (1000000 / (1 << 8))); + if (rval) { + dev_err(dev, "extclk frequency set failed\n"); + goto out_cci_addr_fail; + } + + rval = ccs_write(sensor, CSI_LANE_MODE, sensor->hwcfg.lanes - 1); + if (rval) { + dev_err(dev, "csi lane mode set failed\n"); + goto out_cci_addr_fail; + } + + rval = ccs_write(sensor, FAST_STANDBY_CTRL, + CCS_FAST_STANDBY_CTRL_FRAME_TRUNCATION); + if (rval) { + dev_err(dev, "fast standby set failed\n"); + goto out_cci_addr_fail; + } + + rval = ccs_write(sensor, CSI_SIGNALING_MODE, + sensor->hwcfg.csi_signalling_mode); + if (rval) { + dev_err(dev, "csi signalling mode set failed\n"); + goto out_cci_addr_fail; + } + + /* DPHY control done by sensor based on requested link rate */ + rval = ccs_write(sensor, PHY_CTRL, CCS_PHY_CTRL_UI); + if (rval < 0) + goto out_cci_addr_fail; + + rval = ccs_write_msr_regs(sensor); + if (rval) + goto out_cci_addr_fail; + + rval = ccs_call_quirk(sensor, post_poweron); + if (rval) { + dev_err(dev, "post_poweron quirks failed\n"); + goto out_cci_addr_fail; + } + + return 0; + +out_cci_addr_fail: + gpiod_set_value(sensor->reset, 1); + gpiod_set_value(sensor->xshutdown, 0); + clk_disable_unprepare(sensor->ext_clk); + +out_xclk_fail: + regulator_bulk_disable(ARRAY_SIZE(ccs_regulators), + sensor->regulators); + + return rval; +} + +static int ccs_power_off(struct device *dev) +{ + struct v4l2_subdev *subdev = dev_get_drvdata(dev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct ccs_sensor *sensor = + container_of(ssd, struct ccs_sensor, ssds[0]); + + /* + * Currently power/clock to lens are enable/disabled separately + * but they are essentially the same signals. So if the sensor is + * powered off while the lens is powered on the sensor does not + * really see a power off and next time the cci address change + * will fail. So do a soft reset explicitly here. + */ + if (sensor->hwcfg.i2c_addr_alt) + ccs_write(sensor, SOFTWARE_RESET, CCS_SOFTWARE_RESET_ON); + + gpiod_set_value(sensor->reset, 1); + gpiod_set_value(sensor->xshutdown, 0); + clk_disable_unprepare(sensor->ext_clk); + usleep_range(5000, 5000); + regulator_bulk_disable(ARRAY_SIZE(ccs_regulators), + sensor->regulators); + sensor->streaming = false; + + return 0; +} + +/* ----------------------------------------------------------------------------- + * Video stream management + */ + +static int ccs_start_streaming(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + unsigned int binning_mode; + int rval; + + mutex_lock(&sensor->mutex); + + rval = ccs_write(sensor, CSI_DATA_FORMAT, + (sensor->csi_format->width << 8) | + sensor->csi_format->compressed); + if (rval) + goto out; + + /* Binning configuration */ + if (sensor->binning_horizontal == 1 && + sensor->binning_vertical == 1) { + binning_mode = 0; + } else { + u8 binning_type = + (sensor->binning_horizontal << 4) + | sensor->binning_vertical; + + rval = ccs_write(sensor, BINNING_TYPE, binning_type); + if (rval < 0) + goto out; + + binning_mode = 1; + } + rval = ccs_write(sensor, BINNING_MODE, binning_mode); + if (rval < 0) + goto out; + + /* Set up PLL */ + rval = ccs_pll_configure(sensor); + if (rval) + goto out; + + /* Analog crop start coordinates */ + rval = ccs_write(sensor, X_ADDR_START, + sensor->pixel_array->crop[CCS_PA_PAD_SRC].left); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, Y_ADDR_START, + sensor->pixel_array->crop[CCS_PA_PAD_SRC].top); + if (rval < 0) + goto out; + + /* Analog crop end coordinates */ + rval = ccs_write( + sensor, X_ADDR_END, + sensor->pixel_array->crop[CCS_PA_PAD_SRC].left + + sensor->pixel_array->crop[CCS_PA_PAD_SRC].width - 1); + if (rval < 0) + goto out; + + rval = ccs_write( + sensor, Y_ADDR_END, + sensor->pixel_array->crop[CCS_PA_PAD_SRC].top + + sensor->pixel_array->crop[CCS_PA_PAD_SRC].height - 1); + if (rval < 0) + goto out; + + /* + * Output from pixel array, including blanking, is set using + * controls below. No need to set here. + */ + + /* Digital crop */ + if (CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY) + == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { + rval = ccs_write( + sensor, DIGITAL_CROP_X_OFFSET, + sensor->scaler->crop[CCS_PAD_SINK].left); + if (rval < 0) + goto out; + + rval = ccs_write( + sensor, DIGITAL_CROP_Y_OFFSET, + sensor->scaler->crop[CCS_PAD_SINK].top); + if (rval < 0) + goto out; + + rval = ccs_write( + sensor, DIGITAL_CROP_IMAGE_WIDTH, + sensor->scaler->crop[CCS_PAD_SINK].width); + if (rval < 0) + goto out; + + rval = ccs_write( + sensor, DIGITAL_CROP_IMAGE_HEIGHT, + sensor->scaler->crop[CCS_PAD_SINK].height); + if (rval < 0) + goto out; + } + + /* Scaling */ + if (CCS_LIM(sensor, SCALING_CAPABILITY) + != CCS_SCALING_CAPABILITY_NONE) { + rval = ccs_write(sensor, SCALING_MODE, sensor->scaling_mode); + if (rval < 0) + goto out; + + rval = ccs_write(sensor, SCALE_M, sensor->scale_m); + if (rval < 0) + goto out; + } + + /* Output size from sensor */ + rval = ccs_write(sensor, X_OUTPUT_SIZE, + sensor->src->crop[CCS_PAD_SRC].width); + if (rval < 0) + goto out; + rval = ccs_write(sensor, Y_OUTPUT_SIZE, + sensor->src->crop[CCS_PAD_SRC].height); + if (rval < 0) + goto out; + + if (CCS_LIM(sensor, FLASH_MODE_CAPABILITY) & + (CCS_FLASH_MODE_CAPABILITY_SINGLE_STROBE | + SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE) && + sensor->hwcfg.strobe_setup != NULL && + sensor->hwcfg.strobe_setup->trigger != 0) { + rval = ccs_setup_flash_strobe(sensor); + if (rval) + goto out; + } + + rval = ccs_call_quirk(sensor, pre_streamon); + if (rval) { + dev_err(&client->dev, "pre_streamon quirks failed\n"); + goto out; + } + + rval = ccs_write(sensor, MODE_SELECT, CCS_MODE_SELECT_STREAMING); + +out: + mutex_unlock(&sensor->mutex); + + return rval; +} + +static int ccs_stop_streaming(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + mutex_lock(&sensor->mutex); + rval = ccs_write(sensor, MODE_SELECT, CCS_MODE_SELECT_SOFTWARE_STANDBY); + if (rval) + goto out; + + rval = ccs_call_quirk(sensor, post_streamoff); + if (rval) + dev_err(&client->dev, "post_streamoff quirks failed\n"); + +out: + mutex_unlock(&sensor->mutex); + return rval; +} + +/* ----------------------------------------------------------------------------- + * V4L2 subdev video operations + */ + +static int ccs_pm_get_init(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + rval = pm_runtime_get_sync(&client->dev); + if (rval < 0) { + pm_runtime_put_noidle(&client->dev); + + return rval; + } else if (!rval) { + rval = v4l2_ctrl_handler_setup(&sensor->pixel_array-> + ctrl_handler); + if (rval) + return rval; + + return v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler); + } + + return 0; +} + +static int ccs_set_stream(struct v4l2_subdev *subdev, int enable) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + if (sensor->streaming == enable) + return 0; + + if (!enable) { + ccs_stop_streaming(sensor); + sensor->streaming = false; + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + return 0; + } + + rval = ccs_pm_get_init(sensor); + if (rval) + return rval; + + sensor->streaming = true; + + rval = ccs_start_streaming(sensor); + if (rval < 0) { + sensor->streaming = false; + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + } + + return rval; +} + +static int ccs_enum_mbus_code(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + struct i2c_client *client = v4l2_get_subdevdata(subdev); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + unsigned int i; + int idx = -1; + int rval = -EINVAL; + + mutex_lock(&sensor->mutex); + + dev_err(&client->dev, "subdev %s, pad %d, index %d\n", + subdev->name, code->pad, code->index); + + if (subdev != &sensor->src->sd || code->pad != CCS_PAD_SRC) { + if (code->index) + goto out; + + code->code = sensor->internal_csi_format->code; + rval = 0; + goto out; + } + + for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) { + if (sensor->mbus_frame_fmts & (1 << i)) + idx++; + + if (idx == code->index) { + code->code = ccs_csi_data_formats[i].code; + dev_err(&client->dev, "found index %d, i %d, code %x\n", + code->index, i, code->code); + rval = 0; + break; + } + } + +out: + mutex_unlock(&sensor->mutex); + + return rval; +} + +static u32 __ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + + if (subdev == &sensor->src->sd && pad == CCS_PAD_SRC) + return sensor->csi_format->code; + else + return sensor->internal_csi_format->code; +} + +static int __ccs_get_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + + if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { + fmt->format = *v4l2_subdev_get_try_format(subdev, cfg, + fmt->pad); + } else { + struct v4l2_rect *r; + + if (fmt->pad == ssd->source_pad) + r = &ssd->crop[ssd->source_pad]; + else + r = &ssd->sink_fmt; + + fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad); + fmt->format.width = r->width; + fmt->format.height = r->height; + fmt->format.field = V4L2_FIELD_NONE; + } + + return 0; +} + +static int ccs_get_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int rval; + + mutex_lock(&sensor->mutex); + rval = __ccs_get_format(subdev, cfg, fmt); + mutex_unlock(&sensor->mutex); + + return rval; +} + +static void ccs_get_crop_compose(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_rect **crops, + struct v4l2_rect **comps, int which) +{ + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + unsigned int i; + + if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { + if (crops) + for (i = 0; i < subdev->entity.num_pads; i++) + crops[i] = &ssd->crop[i]; + if (comps) + *comps = &ssd->compose; + } else { + if (crops) { + for (i = 0; i < subdev->entity.num_pads; i++) + crops[i] = v4l2_subdev_get_try_crop(subdev, + cfg, i); + } + if (comps) + *comps = v4l2_subdev_get_try_compose(subdev, cfg, + CCS_PAD_SINK); + } +} + +/* Changes require propagation only on sink pad. */ +static void ccs_propagate(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, int which, + int target) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct v4l2_rect *comp, *crops[CCS_PADS]; + + ccs_get_crop_compose(subdev, cfg, crops, &comp, which); + + switch (target) { + case V4L2_SEL_TGT_CROP: + comp->width = crops[CCS_PAD_SINK]->width; + comp->height = crops[CCS_PAD_SINK]->height; + if (which == V4L2_SUBDEV_FORMAT_ACTIVE) { + if (ssd == sensor->scaler) { + sensor->scale_m = CCS_LIM(sensor, SCALER_N_MIN); + sensor->scaling_mode = + CCS_SCALING_MODE_NO_SCALING; + } else if (ssd == sensor->binner) { + sensor->binning_horizontal = 1; + sensor->binning_vertical = 1; + } + } + fallthrough; + case V4L2_SEL_TGT_COMPOSE: + *crops[CCS_PAD_SRC] = *comp; + break; + default: + WARN_ON_ONCE(1); + } +} + +static const struct ccs_csi_data_format +*ccs_validate_csi_data_format(struct ccs_sensor *sensor, u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) { + if (sensor->mbus_frame_fmts & (1 << i) && + ccs_csi_data_formats[i].code == code) + return &ccs_csi_data_formats[i]; + } + + return sensor->csi_format; +} + +static int ccs_set_format_source(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + const struct ccs_csi_data_format *csi_format, + *old_csi_format = sensor->csi_format; + unsigned long *valid_link_freqs; + u32 code = fmt->format.code; + unsigned int i; + int rval; + + rval = __ccs_get_format(subdev, cfg, fmt); + if (rval) + return rval; + + /* + * Media bus code is changeable on src subdev's source pad. On + * other source pads we just get format here. + */ + if (subdev != &sensor->src->sd) + return 0; + + csi_format = ccs_validate_csi_data_format(sensor, code); + + fmt->format.code = csi_format->code; + + if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return 0; + + sensor->csi_format = csi_format; + + if (csi_format->width != old_csi_format->width) + for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) + __v4l2_ctrl_modify_range( + sensor->test_data[i], 0, + (1 << csi_format->width) - 1, 1, 0); + + if (csi_format->compressed == old_csi_format->compressed) + return 0; + + valid_link_freqs = + &sensor->valid_link_freqs[sensor->csi_format->compressed + - sensor->compressed_min_bpp]; + + __v4l2_ctrl_modify_range( + sensor->link_freq, 0, + __fls(*valid_link_freqs), ~*valid_link_freqs, + __ffs(*valid_link_freqs)); + + return ccs_pll_update(sensor); +} + +static int ccs_set_format(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_format *fmt) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct v4l2_rect *crops[CCS_PADS]; + + mutex_lock(&sensor->mutex); + + if (fmt->pad == ssd->source_pad) { + int rval; + + rval = ccs_set_format_source(subdev, cfg, fmt); + + mutex_unlock(&sensor->mutex); + + return rval; + } + + /* Sink pad. Width and height are changeable here. */ + fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad); + fmt->format.width &= ~1; + fmt->format.height &= ~1; + fmt->format.field = V4L2_FIELD_NONE; + + fmt->format.width = + clamp(fmt->format.width, + CCS_LIM(sensor, MIN_X_OUTPUT_SIZE), + CCS_LIM(sensor, MAX_X_OUTPUT_SIZE)); + fmt->format.height = + clamp(fmt->format.height, + CCS_LIM(sensor, MIN_Y_OUTPUT_SIZE), + CCS_LIM(sensor, MAX_Y_OUTPUT_SIZE)); + + ccs_get_crop_compose(subdev, cfg, crops, NULL, fmt->which); + + crops[ssd->sink_pad]->left = 0; + crops[ssd->sink_pad]->top = 0; + crops[ssd->sink_pad]->width = fmt->format.width; + crops[ssd->sink_pad]->height = fmt->format.height; + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) + ssd->sink_fmt = *crops[ssd->sink_pad]; + ccs_propagate(subdev, cfg, fmt->which, V4L2_SEL_TGT_CROP); + + mutex_unlock(&sensor->mutex); + + return 0; +} + +/* + * Calculate goodness of scaled image size compared to expected image + * size and flags provided. + */ +#define SCALING_GOODNESS 100000 +#define SCALING_GOODNESS_EXTREME 100000000 +static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w, + int h, int ask_h, u32 flags) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct i2c_client *client = v4l2_get_subdevdata(subdev); + int val = 0; + + w &= ~1; + ask_w &= ~1; + h &= ~1; + ask_h &= ~1; + + if (flags & V4L2_SEL_FLAG_GE) { + if (w < ask_w) + val -= SCALING_GOODNESS; + if (h < ask_h) + val -= SCALING_GOODNESS; + } + + if (flags & V4L2_SEL_FLAG_LE) { + if (w > ask_w) + val -= SCALING_GOODNESS; + if (h > ask_h) + val -= SCALING_GOODNESS; + } + + val -= abs(w - ask_w); + val -= abs(h - ask_h); + + if (w < CCS_LIM(sensor, MIN_X_OUTPUT_SIZE)) + val -= SCALING_GOODNESS_EXTREME; + + dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n", + w, ask_w, h, ask_h, val); + + return val; +} + +static void ccs_set_compose_binner(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel, + struct v4l2_rect **crops, + struct v4l2_rect *comp) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + unsigned int i; + unsigned int binh = 1, binv = 1; + int best = scaling_goodness( + subdev, + crops[CCS_PAD_SINK]->width, sel->r.width, + crops[CCS_PAD_SINK]->height, sel->r.height, sel->flags); + + for (i = 0; i < sensor->nbinning_subtypes; i++) { + int this = scaling_goodness( + subdev, + crops[CCS_PAD_SINK]->width + / sensor->binning_subtypes[i].horizontal, + sel->r.width, + crops[CCS_PAD_SINK]->height + / sensor->binning_subtypes[i].vertical, + sel->r.height, sel->flags); + + if (this > best) { + binh = sensor->binning_subtypes[i].horizontal; + binv = sensor->binning_subtypes[i].vertical; + best = this; + } + } + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + sensor->binning_vertical = binv; + sensor->binning_horizontal = binh; + } + + sel->r.width = (crops[CCS_PAD_SINK]->width / binh) & ~1; + sel->r.height = (crops[CCS_PAD_SINK]->height / binv) & ~1; +} + +/* + * Calculate best scaling ratio and mode for given output resolution. + * + * Try all of these: horizontal ratio, vertical ratio and smallest + * size possible (horizontally). + * + * Also try whether horizontal scaler or full scaler gives a better + * result. + */ +static void ccs_set_compose_scaler(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel, + struct v4l2_rect **crops, + struct v4l2_rect *comp) +{ + struct i2c_client *client = v4l2_get_subdevdata(subdev); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + u32 min, max, a, b, max_m; + u32 scale_m = CCS_LIM(sensor, SCALER_N_MIN); + int mode = CCS_SCALING_MODE_HORIZONTAL; + u32 try[4]; + u32 ntry = 0; + unsigned int i; + int best = INT_MIN; + + sel->r.width = min_t(unsigned int, sel->r.width, + crops[CCS_PAD_SINK]->width); + sel->r.height = min_t(unsigned int, sel->r.height, + crops[CCS_PAD_SINK]->height); + + a = crops[CCS_PAD_SINK]->width + * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.width; + b = crops[CCS_PAD_SINK]->height + * CCS_LIM(sensor, SCALER_N_MIN) / sel->r.height; + max_m = crops[CCS_PAD_SINK]->width + * CCS_LIM(sensor, SCALER_N_MIN) + / CCS_LIM(sensor, MIN_X_OUTPUT_SIZE); + + a = clamp(a, CCS_LIM(sensor, SCALER_M_MIN), + CCS_LIM(sensor, SCALER_M_MAX)); + b = clamp(b, CCS_LIM(sensor, SCALER_M_MIN), + CCS_LIM(sensor, SCALER_M_MAX)); + max_m = clamp(max_m, CCS_LIM(sensor, SCALER_M_MIN), + CCS_LIM(sensor, SCALER_M_MAX)); + + dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m); + + min = min(max_m, min(a, b)); + max = min(max_m, max(a, b)); + + try[ntry] = min; + ntry++; + if (min != max) { + try[ntry] = max; + ntry++; + } + if (max != max_m) { + try[ntry] = min + 1; + ntry++; + if (min != max) { + try[ntry] = max + 1; + ntry++; + } + } + + for (i = 0; i < ntry; i++) { + int this = scaling_goodness( + subdev, + crops[CCS_PAD_SINK]->width + / try[i] * CCS_LIM(sensor, SCALER_N_MIN), + sel->r.width, + crops[CCS_PAD_SINK]->height, + sel->r.height, + sel->flags); + + dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i); + + if (this > best) { + scale_m = try[i]; + mode = CCS_SCALING_MODE_HORIZONTAL; + best = this; + } + + if (CCS_LIM(sensor, SCALING_CAPABILITY) + == CCS_SCALING_CAPABILITY_HORIZONTAL) + continue; + + this = scaling_goodness( + subdev, crops[CCS_PAD_SINK]->width + / try[i] + * CCS_LIM(sensor, SCALER_N_MIN), + sel->r.width, + crops[CCS_PAD_SINK]->height + / try[i] + * CCS_LIM(sensor, SCALER_N_MIN), + sel->r.height, + sel->flags); + + if (this > best) { + scale_m = try[i]; + mode = SMIAPP_SCALING_MODE_BOTH; + best = this; + } + } + + sel->r.width = + (crops[CCS_PAD_SINK]->width + / scale_m + * CCS_LIM(sensor, SCALER_N_MIN)) & ~1; + if (mode == SMIAPP_SCALING_MODE_BOTH) + sel->r.height = + (crops[CCS_PAD_SINK]->height + / scale_m + * CCS_LIM(sensor, SCALER_N_MIN)) + & ~1; + else + sel->r.height = crops[CCS_PAD_SINK]->height; + + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + sensor->scale_m = scale_m; + sensor->scaling_mode = mode; + } +} +/* We're only called on source pads. This function sets scaling. */ +static int ccs_set_compose(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct v4l2_rect *comp, *crops[CCS_PADS]; + + ccs_get_crop_compose(subdev, cfg, crops, &comp, sel->which); + + sel->r.top = 0; + sel->r.left = 0; + + if (ssd == sensor->binner) + ccs_set_compose_binner(subdev, cfg, sel, crops, comp); + else + ccs_set_compose_scaler(subdev, cfg, sel, crops, comp); + + *comp = sel->r; + ccs_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_COMPOSE); + + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) + return ccs_pll_blanking_update(sensor); + + return 0; +} + +static int __ccs_sel_supported(struct v4l2_subdev *subdev, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + + /* We only implement crop in three places. */ + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + case V4L2_SEL_TGT_CROP_BOUNDS: + if (ssd == sensor->pixel_array && sel->pad == CCS_PA_PAD_SRC) + return 0; + if (ssd == sensor->src && sel->pad == CCS_PAD_SRC) + return 0; + if (ssd == sensor->scaler && sel->pad == CCS_PAD_SINK && + CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY) + == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) + return 0; + return -EINVAL; + case V4L2_SEL_TGT_NATIVE_SIZE: + if (ssd == sensor->pixel_array && sel->pad == CCS_PA_PAD_SRC) + return 0; + return -EINVAL; + case V4L2_SEL_TGT_COMPOSE: + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + if (sel->pad == ssd->source_pad) + return -EINVAL; + if (ssd == sensor->binner) + return 0; + if (ssd == sensor->scaler && CCS_LIM(sensor, SCALING_CAPABILITY) + != CCS_SCALING_CAPABILITY_NONE) + return 0; + fallthrough; + default: + return -EINVAL; + } +} + +static int ccs_set_crop(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct v4l2_rect *src_size, *crops[CCS_PADS]; + struct v4l2_rect _r; + + ccs_get_crop_compose(subdev, cfg, crops, NULL, sel->which); + + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + if (sel->pad == ssd->sink_pad) + src_size = &ssd->sink_fmt; + else + src_size = &ssd->compose; + } else { + if (sel->pad == ssd->sink_pad) { + _r.left = 0; + _r.top = 0; + _r.width = v4l2_subdev_get_try_format(subdev, cfg, + sel->pad) + ->width; + _r.height = v4l2_subdev_get_try_format(subdev, cfg, + sel->pad) + ->height; + src_size = &_r; + } else { + src_size = v4l2_subdev_get_try_compose( + subdev, cfg, ssd->sink_pad); + } + } + + if (ssd == sensor->src && sel->pad == CCS_PAD_SRC) { + sel->r.left = 0; + sel->r.top = 0; + } + + sel->r.width = min(sel->r.width, src_size->width); + sel->r.height = min(sel->r.height, src_size->height); + + sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width); + sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height); + + *crops[sel->pad] = sel->r; + + if (ssd != sensor->pixel_array && sel->pad == CCS_PAD_SINK) + ccs_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_CROP); + + return 0; +} + +static void ccs_get_native_size(struct ccs_subdev *ssd, struct v4l2_rect *r) +{ + r->top = 0; + r->left = 0; + r->width = CCS_LIM(ssd->sensor, X_ADDR_MAX) + 1; + r->height = CCS_LIM(ssd->sensor, Y_ADDR_MAX) + 1; +} + +static int __ccs_get_selection(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_subdev *ssd = to_ccs_subdev(subdev); + struct v4l2_rect *comp, *crops[CCS_PADS]; + struct v4l2_rect sink_fmt; + int ret; + + ret = __ccs_sel_supported(subdev, sel); + if (ret) + return ret; + + ccs_get_crop_compose(subdev, cfg, crops, &comp, sel->which); + + if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + sink_fmt = ssd->sink_fmt; + } else { + struct v4l2_mbus_framefmt *fmt = + v4l2_subdev_get_try_format(subdev, cfg, ssd->sink_pad); + + sink_fmt.left = 0; + sink_fmt.top = 0; + sink_fmt.width = fmt->width; + sink_fmt.height = fmt->height; + } + + switch (sel->target) { + case V4L2_SEL_TGT_CROP_BOUNDS: + case V4L2_SEL_TGT_NATIVE_SIZE: + if (ssd == sensor->pixel_array) + ccs_get_native_size(ssd, &sel->r); + else if (sel->pad == ssd->sink_pad) + sel->r = sink_fmt; + else + sel->r = *comp; + break; + case V4L2_SEL_TGT_CROP: + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + sel->r = *crops[sel->pad]; + break; + case V4L2_SEL_TGT_COMPOSE: + sel->r = *comp; + break; + } + + return 0; +} + +static int ccs_get_selection(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int rval; + + mutex_lock(&sensor->mutex); + rval = __ccs_get_selection(subdev, cfg, sel); + mutex_unlock(&sensor->mutex); + + return rval; +} + +static int ccs_set_selection(struct v4l2_subdev *subdev, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_selection *sel) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int ret; + + ret = __ccs_sel_supported(subdev, sel); + if (ret) + return ret; + + mutex_lock(&sensor->mutex); + + sel->r.left = max(0, sel->r.left & ~1); + sel->r.top = max(0, sel->r.top & ~1); + sel->r.width = CCS_ALIGN_DIM(sel->r.width, sel->flags); + sel->r.height = CCS_ALIGN_DIM(sel->r.height, sel->flags); + + sel->r.width = max_t(unsigned int, CCS_LIM(sensor, MIN_X_OUTPUT_SIZE), + sel->r.width); + sel->r.height = max_t(unsigned int, CCS_LIM(sensor, MIN_Y_OUTPUT_SIZE), + sel->r.height); + + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + ret = ccs_set_crop(subdev, cfg, sel); + break; + case V4L2_SEL_TGT_COMPOSE: + ret = ccs_set_compose(subdev, cfg, sel); + break; + default: + ret = -EINVAL; + } + + mutex_unlock(&sensor->mutex); + return ret; +} + +static int ccs_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + + *frames = sensor->frame_skip; + return 0; +} + +static int ccs_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + + *lines = sensor->image_start; + + return 0; +} + +/* ----------------------------------------------------------------------------- + * sysfs attributes + */ + +static ssize_t +ccs_sysfs_nvm_read(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); + struct i2c_client *client = v4l2_get_subdevdata(subdev); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int rval; + + if (!sensor->dev_init_done) + return -EBUSY; + + rval = ccs_pm_get_init(sensor); + if (rval < 0) + return -ENODEV; + + rval = ccs_read_nvm(sensor, buf, PAGE_SIZE); + if (rval < 0) { + pm_runtime_put(&client->dev); + dev_err(&client->dev, "nvm read failed\n"); + return -ENODEV; + } + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + /* + * NVM is still way below a PAGE_SIZE, so we can safely + * assume this for now. + */ + return rval; +} +static DEVICE_ATTR(nvm, S_IRUGO, ccs_sysfs_nvm_read, NULL); + +static ssize_t +ccs_sysfs_ident_read(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev)); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct ccs_module_info *minfo = &sensor->minfo; + + if (minfo->mipi_manufacturer_id) + return snprintf(buf, PAGE_SIZE, "%4.4x%4.4x%2.2x\n", + minfo->mipi_manufacturer_id, minfo->model_id, + minfo->revision_number) + 1; + else + return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n", + minfo->smia_manufacturer_id, minfo->model_id, + minfo->revision_number) + 1; +} + +static DEVICE_ATTR(ident, S_IRUGO, ccs_sysfs_ident_read, NULL); + +/* ----------------------------------------------------------------------------- + * V4L2 subdev core operations + */ + +static int ccs_identify_module(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + struct ccs_module_info *minfo = &sensor->minfo; + unsigned int i; + u32 rev; + int rval = 0; + + /* Module info */ + rval = ccs_read(sensor, MODULE_MANUFACTURER_ID, + &minfo->mipi_manufacturer_id); + if (!rval && !minfo->mipi_manufacturer_id) + rval = ccs_read_addr_8only(sensor, + SMIAPP_REG_U8_MANUFACTURER_ID, + &minfo->smia_manufacturer_id); + if (!rval) + rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_MODEL_ID, + &minfo->model_id); + if (!rval) + rval = ccs_read_addr_8only(sensor, + CCS_R_MODULE_REVISION_NUMBER_MAJOR, + &rev); + if (!rval) { + rval = ccs_read_addr_8only(sensor, + CCS_R_MODULE_REVISION_NUMBER_MINOR, + &minfo->revision_number); + minfo->revision_number |= rev << 8; + } + if (!rval) + rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_YEAR, + &minfo->module_year); + if (!rval) + rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_MONTH, + &minfo->module_month); + if (!rval) + rval = ccs_read_addr_8only(sensor, CCS_R_MODULE_DATE_DAY, + &minfo->module_day); + + /* Sensor info */ + if (!rval) + rval = ccs_read(sensor, SENSOR_MANUFACTURER_ID, + &minfo->sensor_mipi_manufacturer_id); + if (!rval && !minfo->sensor_mipi_manufacturer_id) + rval = ccs_read_addr_8only(sensor, + CCS_R_SENSOR_MANUFACTURER_ID, + &minfo->sensor_smia_manufacturer_id); + if (!rval) + rval = ccs_read_addr_8only(sensor, + CCS_R_SENSOR_MODEL_ID, + &minfo->sensor_model_id); + if (!rval) + rval = ccs_read_addr_8only(sensor, + CCS_R_SENSOR_REVISION_NUMBER, + &minfo->sensor_revision_number); + if (!rval) + rval = ccs_read_addr_8only(sensor, + CCS_R_SENSOR_FIRMWARE_VERSION, + &minfo->sensor_firmware_version); + + /* SMIA */ + if (!rval) + rval = ccs_read(sensor, MIPI_CCS_VERSION, &minfo->ccs_version); + if (!rval && !minfo->ccs_version) + rval = ccs_read_addr_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION, + &minfo->smia_version); + if (!rval && !minfo->ccs_version) + rval = ccs_read_addr_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION, + &minfo->smiapp_version); + + if (rval) { + dev_err(&client->dev, "sensor detection failed\n"); + return -ENODEV; + } + + if (minfo->mipi_manufacturer_id) + dev_dbg(&client->dev, "MIPI CCS module 0x%4.4x-0x%4.4x\n", + minfo->mipi_manufacturer_id, minfo->model_id); + else + dev_dbg(&client->dev, "SMIA module 0x%2.2x-0x%4.4x\n", + minfo->smia_manufacturer_id, minfo->model_id); + + dev_dbg(&client->dev, + "module revision 0x%4.4x date %2.2d-%2.2d-%2.2d\n", + minfo->revision_number, minfo->module_year, minfo->module_month, + minfo->module_day); + + if (minfo->sensor_mipi_manufacturer_id) + dev_dbg(&client->dev, "MIPI CCS sensor 0x%4.4x-0x%4.4x\n", + minfo->sensor_mipi_manufacturer_id, + minfo->sensor_model_id); + else + dev_dbg(&client->dev, "SMIA sensor 0x%2.2x-0x%4.4x\n", + minfo->sensor_smia_manufacturer_id, + minfo->sensor_model_id); + + dev_dbg(&client->dev, + "sensor revision 0x%2.2x firmware version 0x%2.2x\n", + minfo->sensor_revision_number, minfo->sensor_firmware_version); + + if (minfo->ccs_version) { + dev_dbg(&client->dev, "MIPI CCS version %u.%u", + (minfo->ccs_version & CCS_MIPI_CCS_VERSION_MAJOR_MASK) + >> CCS_MIPI_CCS_VERSION_MAJOR_SHIFT, + (minfo->ccs_version & CCS_MIPI_CCS_VERSION_MINOR_MASK)); + minfo->name = CCS_NAME; + } else { + dev_dbg(&client->dev, + "smia version %2.2d smiapp version %2.2d\n", + minfo->smia_version, minfo->smiapp_version); + minfo->name = SMIAPP_NAME; + } + + /* + * Some modules have bad data in the lvalues below. Hope the + * rvalues have better stuff. The lvalues are module + * parameters whereas the rvalues are sensor parameters. + */ + if (minfo->sensor_smia_manufacturer_id && + !minfo->smia_manufacturer_id && !minfo->model_id) { + minfo->smia_manufacturer_id = + minfo->sensor_smia_manufacturer_id; + minfo->model_id = minfo->sensor_model_id; + minfo->revision_number = minfo->sensor_revision_number; + } + + for (i = 0; i < ARRAY_SIZE(ccs_module_idents); i++) { + if (ccs_module_idents[i].mipi_manufacturer_id && + ccs_module_idents[i].mipi_manufacturer_id + != minfo->mipi_manufacturer_id) + continue; + if (ccs_module_idents[i].smia_manufacturer_id && + ccs_module_idents[i].smia_manufacturer_id + != minfo->smia_manufacturer_id) + continue; + if (ccs_module_idents[i].model_id != minfo->model_id) + continue; + if (ccs_module_idents[i].flags + & CCS_MODULE_IDENT_FLAG_REV_LE) { + if (ccs_module_idents[i].revision_number_major + < (minfo->revision_number >> 8)) + continue; + } else { + if (ccs_module_idents[i].revision_number_major + != (minfo->revision_number >> 8)) + continue; + } + + minfo->name = ccs_module_idents[i].name; + minfo->quirk = ccs_module_idents[i].quirk; + break; + } + + if (i >= ARRAY_SIZE(ccs_module_idents)) + dev_warn(&client->dev, + "no quirks for this module; let's hope it's fully compliant\n"); + + dev_dbg(&client->dev, "the sensor is called %s\n", minfo->name); + + return 0; +} + +static const struct v4l2_subdev_ops ccs_ops; +static const struct v4l2_subdev_internal_ops ccs_internal_ops; +static const struct media_entity_operations ccs_entity_ops; + +static int ccs_register_subdev(struct ccs_sensor *sensor, + struct ccs_subdev *ssd, + struct ccs_subdev *sink_ssd, + u16 source_pad, u16 sink_pad, u32 link_flags) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + if (!sink_ssd) + return 0; + + rval = media_entity_pads_init(&ssd->sd.entity, ssd->npads, ssd->pads); + if (rval) { + dev_err(&client->dev, "media_entity_pads_init failed\n"); + return rval; + } + + rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, &ssd->sd); + if (rval) { + dev_err(&client->dev, "v4l2_device_register_subdev failed\n"); + return rval; + } + + rval = media_create_pad_link(&ssd->sd.entity, source_pad, + &sink_ssd->sd.entity, sink_pad, + link_flags); + if (rval) { + dev_err(&client->dev, "media_create_pad_link failed\n"); + v4l2_device_unregister_subdev(&ssd->sd); + return rval; + } + + return 0; +} + +static void ccs_unregistered(struct v4l2_subdev *subdev) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + unsigned int i; + + for (i = 1; i < sensor->ssds_used; i++) + v4l2_device_unregister_subdev(&sensor->ssds[i].sd); +} + +static int ccs_registered(struct v4l2_subdev *subdev) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int rval; + + if (sensor->scaler) { + rval = ccs_register_subdev(sensor, sensor->binner, + sensor->scaler, + CCS_PAD_SRC, CCS_PAD_SINK, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (rval < 0) + return rval; + } + + rval = ccs_register_subdev(sensor, sensor->pixel_array, sensor->binner, + CCS_PA_PAD_SRC, CCS_PAD_SINK, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + if (rval) + goto out_err; + + return 0; + +out_err: + ccs_unregistered(subdev); + + return rval; +} + +static void ccs_cleanup(struct ccs_sensor *sensor) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + + device_remove_file(&client->dev, &dev_attr_nvm); + device_remove_file(&client->dev, &dev_attr_ident); + + ccs_free_controls(sensor); +} + +static void ccs_create_subdev(struct ccs_sensor *sensor, + struct ccs_subdev *ssd, const char *name, + unsigned short num_pads, u32 function) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + + if (!ssd) + return; + + if (ssd != sensor->src) + v4l2_subdev_init(&ssd->sd, &ccs_ops); + + ssd->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + ssd->sd.entity.function = function; + ssd->sensor = sensor; + + ssd->npads = num_pads; + ssd->source_pad = num_pads - 1; + + v4l2_i2c_subdev_set_name(&ssd->sd, client, sensor->minfo.name, name); + + ccs_get_native_size(ssd, &ssd->sink_fmt); + + ssd->compose.width = ssd->sink_fmt.width; + ssd->compose.height = ssd->sink_fmt.height; + ssd->crop[ssd->source_pad] = ssd->compose; + ssd->pads[ssd->source_pad].flags = MEDIA_PAD_FL_SOURCE; + if (ssd != sensor->pixel_array) { + ssd->crop[ssd->sink_pad] = ssd->compose; + ssd->pads[ssd->sink_pad].flags = MEDIA_PAD_FL_SINK; + } + + ssd->sd.entity.ops = &ccs_entity_ops; + + if (ssd == sensor->src) + return; + + ssd->sd.internal_ops = &ccs_internal_ops; + ssd->sd.owner = THIS_MODULE; + ssd->sd.dev = &client->dev; + v4l2_set_subdevdata(&ssd->sd, client); +} + +static int ccs_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + struct ccs_subdev *ssd = to_ccs_subdev(sd); + struct ccs_sensor *sensor = ssd->sensor; + unsigned int i; + + mutex_lock(&sensor->mutex); + + for (i = 0; i < ssd->npads; i++) { + struct v4l2_mbus_framefmt *try_fmt = + v4l2_subdev_get_try_format(sd, fh->pad, i); + struct v4l2_rect *try_crop = + v4l2_subdev_get_try_crop(sd, fh->pad, i); + struct v4l2_rect *try_comp; + + ccs_get_native_size(ssd, try_crop); + + try_fmt->width = try_crop->width; + try_fmt->height = try_crop->height; + try_fmt->code = sensor->internal_csi_format->code; + try_fmt->field = V4L2_FIELD_NONE; + + if (ssd != sensor->pixel_array) + continue; + + try_comp = v4l2_subdev_get_try_compose(sd, fh->pad, i); + *try_comp = *try_crop; + } + + mutex_unlock(&sensor->mutex); + + return 0; +} + +static const struct v4l2_subdev_video_ops ccs_video_ops = { + .s_stream = ccs_set_stream, +}; + +static const struct v4l2_subdev_pad_ops ccs_pad_ops = { + .enum_mbus_code = ccs_enum_mbus_code, + .get_fmt = ccs_get_format, + .set_fmt = ccs_set_format, + .get_selection = ccs_get_selection, + .set_selection = ccs_set_selection, +}; + +static const struct v4l2_subdev_sensor_ops ccs_sensor_ops = { + .g_skip_frames = ccs_get_skip_frames, + .g_skip_top_lines = ccs_get_skip_top_lines, +}; + +static const struct v4l2_subdev_ops ccs_ops = { + .video = &ccs_video_ops, + .pad = &ccs_pad_ops, + .sensor = &ccs_sensor_ops, +}; + +static const struct media_entity_operations ccs_entity_ops = { + .link_validate = v4l2_subdev_link_validate, +}; + +static const struct v4l2_subdev_internal_ops ccs_internal_src_ops = { + .registered = ccs_registered, + .unregistered = ccs_unregistered, + .open = ccs_open, +}; + +static const struct v4l2_subdev_internal_ops ccs_internal_ops = { + .open = ccs_open, +}; + +/* ----------------------------------------------------------------------------- + * I2C Driver + */ + +static int __maybe_unused ccs_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *subdev = i2c_get_clientdata(client); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + bool streaming = sensor->streaming; + int rval; + + rval = pm_runtime_get_sync(dev); + if (rval < 0) { + pm_runtime_put_noidle(dev); + + return -EAGAIN; + } + + if (sensor->streaming) + ccs_stop_streaming(sensor); + + /* save state for resume */ + sensor->streaming = streaming; + + return 0; +} + +static int __maybe_unused ccs_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct v4l2_subdev *subdev = i2c_get_clientdata(client); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + int rval = 0; + + pm_runtime_put(dev); + + if (sensor->streaming) + rval = ccs_start_streaming(sensor); + + return rval; +} + +static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev) +{ + struct ccs_hwconfig *hwcfg = &sensor->hwcfg; + struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = V4L2_MBUS_UNKNOWN }; + struct fwnode_handle *ep; + struct fwnode_handle *fwnode = dev_fwnode(dev); + u32 rotation; + int i; + int rval; + + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); + if (!ep) + return -ENODEV; + + /* + * Note that we do need to rely on detecting the bus type between CSI-2 + * D-PHY and CCP2 as the old bindings did not require it. + */ + rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + if (rval) + goto out_err; + + switch (bus_cfg.bus_type) { + case V4L2_MBUS_CSI2_DPHY: + hwcfg->csi_signalling_mode = CCS_CSI_SIGNALING_MODE_CSI_2_DPHY; + hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; + break; + case V4L2_MBUS_CSI2_CPHY: + hwcfg->csi_signalling_mode = CCS_CSI_SIGNALING_MODE_CSI_2_CPHY; + hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; + break; + case V4L2_MBUS_CSI1: + case V4L2_MBUS_CCP2: + hwcfg->csi_signalling_mode = (bus_cfg.bus.mipi_csi1.strobe) ? + SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_STROBE : + SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_CLOCK; + hwcfg->lanes = 1; + break; + default: + dev_err(dev, "unsupported bus %u\n", bus_cfg.bus_type); + rval = -EINVAL; + goto out_err; + } + + dev_dbg(dev, "lanes %u\n", hwcfg->lanes); + + rval = fwnode_property_read_u32(fwnode, "rotation", &rotation); + if (!rval) { + switch (rotation) { + case 180: + hwcfg->module_board_orient = + CCS_MODULE_BOARD_ORIENT_180; + fallthrough; + case 0: + break; + default: + dev_err(dev, "invalid rotation %u\n", rotation); + rval = -EINVAL; + goto out_err; + } + } + + rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency", + &hwcfg->ext_clk); + if (rval) + dev_info(dev, "can't get clock-frequency\n"); + + dev_dbg(dev, "clk %d, mode %d\n", hwcfg->ext_clk, + hwcfg->csi_signalling_mode); + + if (!bus_cfg.nr_of_link_frequencies) { + dev_warn(dev, "no link frequencies defined\n"); + rval = -EINVAL; + goto out_err; + } + + hwcfg->op_sys_clock = devm_kcalloc( + dev, bus_cfg.nr_of_link_frequencies + 1 /* guardian */, + sizeof(*hwcfg->op_sys_clock), GFP_KERNEL); + if (!hwcfg->op_sys_clock) { + rval = -ENOMEM; + goto out_err; + } + + for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) { + hwcfg->op_sys_clock[i] = bus_cfg.link_frequencies[i]; + dev_dbg(dev, "freq %d: %lld\n", i, hwcfg->op_sys_clock[i]); + } + + v4l2_fwnode_endpoint_free(&bus_cfg); + fwnode_handle_put(ep); + + return 0; + +out_err: + v4l2_fwnode_endpoint_free(&bus_cfg); + fwnode_handle_put(ep); + + return rval; +} + +static int ccs_probe(struct i2c_client *client) +{ + struct ccs_sensor *sensor; + const struct firmware *fw; + char filename[40]; + unsigned int i; + int rval; + + sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL); + if (sensor == NULL) + return -ENOMEM; + + rval = ccs_get_hwconfig(sensor, &client->dev); + if (rval) + return rval; + + sensor->src = &sensor->ssds[sensor->ssds_used]; + + v4l2_i2c_subdev_init(&sensor->src->sd, client, &ccs_ops); + sensor->src->sd.internal_ops = &ccs_internal_src_ops; + + sensor->regulators = devm_kcalloc(&client->dev, + ARRAY_SIZE(ccs_regulators), + sizeof(*sensor->regulators), + GFP_KERNEL); + if (!sensor->regulators) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(ccs_regulators); i++) + sensor->regulators[i].supply = ccs_regulators[i]; + + rval = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(ccs_regulators), + sensor->regulators); + if (rval) { + dev_err(&client->dev, "could not get regulators\n"); + return rval; + } + + sensor->ext_clk = devm_clk_get(&client->dev, NULL); + if (PTR_ERR(sensor->ext_clk) == -ENOENT) { + dev_info(&client->dev, "no clock defined, continuing...\n"); + sensor->ext_clk = NULL; + } else if (IS_ERR(sensor->ext_clk)) { + dev_err(&client->dev, "could not get clock (%ld)\n", + PTR_ERR(sensor->ext_clk)); + return -EPROBE_DEFER; + } + + if (sensor->ext_clk) { + if (sensor->hwcfg.ext_clk) { + unsigned long rate; + + rval = clk_set_rate(sensor->ext_clk, + sensor->hwcfg.ext_clk); + if (rval < 0) { + dev_err(&client->dev, + "unable to set clock freq to %u\n", + sensor->hwcfg.ext_clk); + return rval; + } + + rate = clk_get_rate(sensor->ext_clk); + if (rate != sensor->hwcfg.ext_clk) { + dev_err(&client->dev, + "can't set clock freq, asked for %u but got %lu\n", + sensor->hwcfg.ext_clk, rate); + return -EINVAL; + } + } else { + sensor->hwcfg.ext_clk = clk_get_rate(sensor->ext_clk); + dev_dbg(&client->dev, "obtained clock freq %u\n", + sensor->hwcfg.ext_clk); + } + } else if (sensor->hwcfg.ext_clk) { + dev_dbg(&client->dev, "assuming clock freq %u\n", + sensor->hwcfg.ext_clk); + } else { + dev_err(&client->dev, "unable to obtain clock freq\n"); + return -EINVAL; + } + + sensor->reset = devm_gpiod_get_optional(&client->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(sensor->reset)) + return PTR_ERR(sensor->reset); + /* Support old users that may have used "xshutdown" property. */ + if (!sensor->reset) + sensor->xshutdown = devm_gpiod_get_optional(&client->dev, + "xshutdown", + GPIOD_OUT_LOW); + if (IS_ERR(sensor->xshutdown)) + return PTR_ERR(sensor->xshutdown); + + rval = ccs_power_on(&client->dev); + if (rval < 0) + return rval; + + mutex_init(&sensor->mutex); + + rval = ccs_identify_module(sensor); + if (rval) { + rval = -ENODEV; + goto out_power_off; + } + + rval = snprintf(filename, sizeof(filename), + "ccs/ccs-sensor-%4.4x-%4.4x-%4.4x.fw", + sensor->minfo.sensor_mipi_manufacturer_id, + sensor->minfo.sensor_model_id, + sensor->minfo.sensor_revision_number); + if (rval >= sizeof(filename)) { + rval = -ENOMEM; + goto out_power_off; + } + + rval = request_firmware(&fw, filename, &client->dev); + if (!rval) { + ccs_data_parse(&sensor->sdata, fw->data, fw->size, &client->dev, + true); + release_firmware(fw); + } + + rval = snprintf(filename, sizeof(filename), + "ccs/ccs-module-%4.4x-%4.4x-%4.4x.fw", + sensor->minfo.mipi_manufacturer_id, + sensor->minfo.model_id, + sensor->minfo.revision_number); + if (rval >= sizeof(filename)) { + rval = -ENOMEM; + goto out_release_sdata; + } + + rval = request_firmware(&fw, filename, &client->dev); + if (!rval) { + ccs_data_parse(&sensor->mdata, fw->data, fw->size, &client->dev, + true); + release_firmware(fw); + } + + rval = ccs_read_all_limits(sensor); + if (rval) + goto out_release_mdata; + + rval = ccs_read_frame_fmt(sensor); + if (rval) { + rval = -ENODEV; + goto out_free_ccs_limits; + } + + /* + * Handle Sensor Module orientation on the board. + * + * The application of H-FLIP and V-FLIP on the sensor is modified by + * the sensor orientation on the board. + * + * For CCS_BOARD_SENSOR_ORIENT_180 the default behaviour is to set + * both H-FLIP and V-FLIP for normal operation which also implies + * that a set/unset operation for user space HFLIP and VFLIP v4l2 + * controls will need to be internally inverted. + * + * Rotation also changes the bayer pattern. + */ + if (sensor->hwcfg.module_board_orient == + CCS_MODULE_BOARD_ORIENT_180) + sensor->hvflip_inv_mask = + CCS_IMAGE_ORIENTATION_HORIZONTAL_MIRROR | + CCS_IMAGE_ORIENTATION_VERTICAL_FLIP; + + rval = ccs_call_quirk(sensor, limits); + if (rval) { + dev_err(&client->dev, "limits quirks failed\n"); + goto out_free_ccs_limits; + } + + if (CCS_LIM(sensor, BINNING_CAPABILITY)) { + sensor->nbinning_subtypes = + min_t(u8, CCS_LIM(sensor, BINNING_SUB_TYPES), + CCS_LIM_BINNING_SUB_TYPE_MAX_N); + + for (i = 0; i < sensor->nbinning_subtypes; i++) { + sensor->binning_subtypes[i].horizontal = + CCS_LIM_AT(sensor, BINNING_SUB_TYPE, i) >> + CCS_BINNING_SUB_TYPE_COLUMN_SHIFT; + sensor->binning_subtypes[i].vertical = + CCS_LIM_AT(sensor, BINNING_SUB_TYPE, i) & + CCS_BINNING_SUB_TYPE_ROW_MASK; + + dev_dbg(&client->dev, "binning %xx%x\n", + sensor->binning_subtypes[i].horizontal, + sensor->binning_subtypes[i].vertical); + } + } + sensor->binning_horizontal = 1; + sensor->binning_vertical = 1; + + if (device_create_file(&client->dev, &dev_attr_ident) != 0) { + dev_err(&client->dev, "sysfs ident entry creation failed\n"); + rval = -ENOENT; + goto out_free_ccs_limits; + } + + if (sensor->minfo.smiapp_version && + CCS_LIM(sensor, DATA_TRANSFER_IF_CAPABILITY) & + CCS_DATA_TRANSFER_IF_CAPABILITY_SUPPORTED) { + if (device_create_file(&client->dev, &dev_attr_nvm) != 0) { + dev_err(&client->dev, "sysfs nvm entry failed\n"); + rval = -EBUSY; + goto out_cleanup; + } + } + + if (!CCS_LIM(sensor, MIN_OP_SYS_CLK_DIV) || + !CCS_LIM(sensor, MAX_OP_SYS_CLK_DIV) || + !CCS_LIM(sensor, MIN_OP_PIX_CLK_DIV) || + !CCS_LIM(sensor, MAX_OP_PIX_CLK_DIV)) { + /* No OP clock branch */ + sensor->pll.flags |= CCS_PLL_FLAG_NO_OP_CLOCKS; + } else if (CCS_LIM(sensor, SCALING_CAPABILITY) + != CCS_SCALING_CAPABILITY_NONE || + CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY) + == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { + /* We have a scaler or digital crop. */ + sensor->scaler = &sensor->ssds[sensor->ssds_used]; + sensor->ssds_used++; + } + sensor->binner = &sensor->ssds[sensor->ssds_used]; + sensor->ssds_used++; + sensor->pixel_array = &sensor->ssds[sensor->ssds_used]; + sensor->ssds_used++; + + sensor->scale_m = CCS_LIM(sensor, SCALER_N_MIN); + + /* prepare PLL configuration input values */ + sensor->pll.bus_type = CCS_PLL_BUS_TYPE_CSI2_DPHY; + sensor->pll.csi2.lanes = sensor->hwcfg.lanes; + if (CCS_LIM(sensor, CLOCK_CALCULATION) & + CCS_CLOCK_CALCULATION_LANE_SPEED) { + sensor->pll.flags |= CCS_PLL_FLAG_LANE_SPEED_MODEL; + if (CCS_LIM(sensor, CLOCK_CALCULATION) & + CCS_CLOCK_CALCULATION_LINK_DECOUPLED) { + sensor->pll.vt_lanes = + CCS_LIM(sensor, NUM_OF_VT_LANES) + 1; + sensor->pll.op_lanes = + CCS_LIM(sensor, NUM_OF_OP_LANES) + 1; + sensor->pll.flags |= CCS_PLL_FLAG_LINK_DECOUPLED; + } else { + sensor->pll.vt_lanes = sensor->pll.csi2.lanes; + sensor->pll.op_lanes = sensor->pll.csi2.lanes; + } + } + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_EXT_DIVIDER) + sensor->pll.flags |= CCS_PLL_FLAG_EXT_IP_PLL_DIVIDER; + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_FLEXIBLE_OP_PIX_CLK_DIV) + sensor->pll.flags |= CCS_PLL_FLAG_FLEXIBLE_OP_PIX_CLK_DIV; + if (CCS_LIM(sensor, FIFO_SUPPORT_CAPABILITY) & + CCS_FIFO_SUPPORT_CAPABILITY_DERATING) + sensor->pll.flags |= CCS_PLL_FLAG_FIFO_DERATING; + if (CCS_LIM(sensor, FIFO_SUPPORT_CAPABILITY) & + CCS_FIFO_SUPPORT_CAPABILITY_DERATING_OVERRATING) + sensor->pll.flags |= CCS_PLL_FLAG_FIFO_DERATING | + CCS_PLL_FLAG_FIFO_OVERRATING; + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_DUAL_PLL) { + if (CCS_LIM(sensor, CLOCK_TREE_PLL_CAPABILITY) & + CCS_CLOCK_TREE_PLL_CAPABILITY_SINGLE_PLL) { + u32 v; + + /* Use sensor default in PLL mode selection */ + rval = ccs_read(sensor, PLL_MODE, &v); + if (rval) + goto out_cleanup; + + if (v == CCS_PLL_MODE_DUAL) + sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL; + } else { + sensor->pll.flags |= CCS_PLL_FLAG_DUAL_PLL; + } + if (CCS_LIM(sensor, CLOCK_CALCULATION) & + CCS_CLOCK_CALCULATION_DUAL_PLL_OP_SYS_DDR) + sensor->pll.flags |= CCS_PLL_FLAG_OP_SYS_DDR; + if (CCS_LIM(sensor, CLOCK_CALCULATION) & + CCS_CLOCK_CALCULATION_DUAL_PLL_OP_PIX_DDR) + sensor->pll.flags |= CCS_PLL_FLAG_OP_PIX_DDR; + } + sensor->pll.op_bits_per_lane = CCS_LIM(sensor, OP_BITS_PER_LANE); + sensor->pll.ext_clk_freq_hz = sensor->hwcfg.ext_clk; + sensor->pll.scale_n = CCS_LIM(sensor, SCALER_N_MIN); + + ccs_create_subdev(sensor, sensor->scaler, " scaler", 2, + MEDIA_ENT_F_CAM_SENSOR); + ccs_create_subdev(sensor, sensor->binner, " binner", 2, + MEDIA_ENT_F_PROC_VIDEO_SCALER); + ccs_create_subdev(sensor, sensor->pixel_array, " pixel_array", 1, + MEDIA_ENT_F_PROC_VIDEO_SCALER); + + rval = ccs_init_controls(sensor); + if (rval < 0) + goto out_cleanup; + + rval = ccs_call_quirk(sensor, init); + if (rval) + goto out_cleanup; + + rval = ccs_get_mbus_formats(sensor); + if (rval) { + rval = -ENODEV; + goto out_cleanup; + } + + rval = ccs_init_late_controls(sensor); + if (rval) { + rval = -ENODEV; + goto out_cleanup; + } + + mutex_lock(&sensor->mutex); + rval = ccs_pll_blanking_update(sensor); + mutex_unlock(&sensor->mutex); + if (rval) { + dev_err(&client->dev, "update mode failed\n"); + goto out_cleanup; + } + + sensor->streaming = false; + sensor->dev_init_done = true; + + rval = media_entity_pads_init(&sensor->src->sd.entity, 2, + sensor->src->pads); + if (rval < 0) + goto out_media_entity_cleanup; + + rval = ccs_write_msr_regs(sensor); + if (rval) + goto out_media_entity_cleanup; + + pm_runtime_set_active(&client->dev); + pm_runtime_get_noresume(&client->dev); + pm_runtime_enable(&client->dev); + + rval = v4l2_async_register_subdev_sensor_common(&sensor->src->sd); + if (rval < 0) + goto out_disable_runtime_pm; + + pm_runtime_set_autosuspend_delay(&client->dev, 1000); + pm_runtime_use_autosuspend(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + return 0; + +out_disable_runtime_pm: + pm_runtime_put_noidle(&client->dev); + pm_runtime_disable(&client->dev); + +out_media_entity_cleanup: + media_entity_cleanup(&sensor->src->sd.entity); + +out_cleanup: + ccs_cleanup(sensor); + +out_release_mdata: + kvfree(sensor->mdata.backing); + +out_release_sdata: + kvfree(sensor->sdata.backing); + +out_free_ccs_limits: + kfree(sensor->ccs_limits); + +out_power_off: + ccs_power_off(&client->dev); + mutex_destroy(&sensor->mutex); + + return rval; +} + +static int ccs_remove(struct i2c_client *client) +{ + struct v4l2_subdev *subdev = i2c_get_clientdata(client); + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + unsigned int i; + + v4l2_async_unregister_subdev(subdev); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + ccs_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); + + for (i = 0; i < sensor->ssds_used; i++) { + v4l2_device_unregister_subdev(&sensor->ssds[i].sd); + media_entity_cleanup(&sensor->ssds[i].sd.entity); + } + ccs_cleanup(sensor); + mutex_destroy(&sensor->mutex); + kfree(sensor->ccs_limits); + kvfree(sensor->sdata.backing); + kvfree(sensor->mdata.backing); + + return 0; +} + +static const struct ccs_device smia_device = { + .flags = CCS_DEVICE_FLAG_IS_SMIA, +}; + +static const struct ccs_device ccs_device = {}; + +static const struct acpi_device_id ccs_acpi_table[] = { + { .id = "MIPI0200", .driver_data = (unsigned long)&ccs_device }, + { }, +}; +MODULE_DEVICE_TABLE(acpi, ccs_acpi_table); + +static const struct of_device_id ccs_of_table[] = { + { .compatible = "mipi-ccs-1.1", .data = &ccs_device }, + { .compatible = "mipi-ccs-1.0", .data = &ccs_device }, + { .compatible = "mipi-ccs", .data = &ccs_device }, + { .compatible = "nokia,smia", .data = &smia_device }, + { }, +}; +MODULE_DEVICE_TABLE(of, ccs_of_table); + +static const struct dev_pm_ops ccs_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(ccs_suspend, ccs_resume) + SET_RUNTIME_PM_OPS(ccs_power_off, ccs_power_on, NULL) +}; + +static struct i2c_driver ccs_i2c_driver = { + .driver = { + .acpi_match_table = ccs_acpi_table, + .of_match_table = ccs_of_table, + .name = CCS_NAME, + .pm = &ccs_pm_ops, + }, + .probe_new = ccs_probe, + .remove = ccs_remove, +}; + +static int ccs_module_init(void) +{ + unsigned int i, l; + + for (i = 0, l = 0; ccs_limits[i].size && l < CCS_L_LAST; i++) { + if (!(ccs_limits[i].flags & CCS_L_FL_SAME_REG)) { + ccs_limit_offsets[l + 1].lim = + ALIGN(ccs_limit_offsets[l].lim + + ccs_limits[i].size, + ccs_reg_width(ccs_limits[i + 1].reg)); + ccs_limit_offsets[l].info = i; + l++; + } else { + ccs_limit_offsets[l].lim += ccs_limits[i].size; + } + } + + if (WARN_ON(ccs_limits[i].size)) + return -EINVAL; + + if (WARN_ON(l != CCS_L_LAST)) + return -EINVAL; + + return i2c_register_driver(THIS_MODULE, &ccs_i2c_driver); +} + +static void ccs_module_cleanup(void) +{ + i2c_del_driver(&ccs_i2c_driver); +} + +module_init(ccs_module_init); +module_exit(ccs_module_cleanup); + +MODULE_AUTHOR("Sakari Ailus <sakari.ailus@linux.intel.com>"); +MODULE_DESCRIPTION("Generic MIPI CCS/SMIA/SMIA++ camera sensor driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("smiapp"); |