diff options
Diffstat (limited to 'drivers/media/i2c/adv748x/adv748x-hdmi.c')
| -rw-r--r-- | drivers/media/i2c/adv748x/adv748x-hdmi.c | 762 |
1 files changed, 762 insertions, 0 deletions
diff --git a/drivers/media/i2c/adv748x/adv748x-hdmi.c b/drivers/media/i2c/adv748x/adv748x-hdmi.c new file mode 100644 index 000000000..52fa7bd75 --- /dev/null +++ b/drivers/media/i2c/adv748x/adv748x-hdmi.c @@ -0,0 +1,762 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Driver for Analog Devices ADV748X HDMI receiver and Component Processor (CP) + * + * Copyright (C) 2017 Renesas Electronics Corp. + */ + +#include <linux/module.h> +#include <linux/mutex.h> + +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-dv-timings.h> +#include <media/v4l2-ioctl.h> + +#include <uapi/linux/v4l2-dv-timings.h> + +#include "adv748x.h" + +/* ----------------------------------------------------------------------------- + * HDMI and CP + */ + +#define ADV748X_HDMI_MIN_WIDTH 640 +#define ADV748X_HDMI_MAX_WIDTH 1920 +#define ADV748X_HDMI_MIN_HEIGHT 480 +#define ADV748X_HDMI_MAX_HEIGHT 1200 + +/* V4L2_DV_BT_CEA_720X480I59_94 - 0.5 MHz */ +#define ADV748X_HDMI_MIN_PIXELCLOCK 13000000 +/* V4L2_DV_BT_DMT_1600X1200P60 */ +#define ADV748X_HDMI_MAX_PIXELCLOCK 162000000 + +static const struct v4l2_dv_timings_cap adv748x_hdmi_timings_cap = { + .type = V4L2_DV_BT_656_1120, + /* keep this initialization for compatibility with GCC < 4.4.6 */ + .reserved = { 0 }, + + V4L2_INIT_BT_TIMINGS(ADV748X_HDMI_MIN_WIDTH, ADV748X_HDMI_MAX_WIDTH, + ADV748X_HDMI_MIN_HEIGHT, ADV748X_HDMI_MAX_HEIGHT, + ADV748X_HDMI_MIN_PIXELCLOCK, + ADV748X_HDMI_MAX_PIXELCLOCK, + V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT, + V4L2_DV_BT_CAP_PROGRESSIVE) +}; + +struct adv748x_hdmi_video_standards { + struct v4l2_dv_timings timings; + u8 vid_std; + u8 v_freq; +}; + +static const struct adv748x_hdmi_video_standards +adv748x_hdmi_video_standards[] = { + { V4L2_DV_BT_CEA_720X480P59_94, 0x4a, 0x00 }, + { V4L2_DV_BT_CEA_720X576P50, 0x4b, 0x00 }, + { V4L2_DV_BT_CEA_1280X720P60, 0x53, 0x00 }, + { V4L2_DV_BT_CEA_1280X720P50, 0x53, 0x01 }, + { V4L2_DV_BT_CEA_1280X720P30, 0x53, 0x02 }, + { V4L2_DV_BT_CEA_1280X720P25, 0x53, 0x03 }, + { V4L2_DV_BT_CEA_1280X720P24, 0x53, 0x04 }, + { V4L2_DV_BT_CEA_1920X1080P60, 0x5e, 0x00 }, + { V4L2_DV_BT_CEA_1920X1080P50, 0x5e, 0x01 }, + { V4L2_DV_BT_CEA_1920X1080P30, 0x5e, 0x02 }, + { V4L2_DV_BT_CEA_1920X1080P25, 0x5e, 0x03 }, + { V4L2_DV_BT_CEA_1920X1080P24, 0x5e, 0x04 }, + /* SVGA */ + { V4L2_DV_BT_DMT_800X600P56, 0x80, 0x00 }, + { V4L2_DV_BT_DMT_800X600P60, 0x81, 0x00 }, + { V4L2_DV_BT_DMT_800X600P72, 0x82, 0x00 }, + { V4L2_DV_BT_DMT_800X600P75, 0x83, 0x00 }, + { V4L2_DV_BT_DMT_800X600P85, 0x84, 0x00 }, + /* SXGA */ + { V4L2_DV_BT_DMT_1280X1024P60, 0x85, 0x00 }, + { V4L2_DV_BT_DMT_1280X1024P75, 0x86, 0x00 }, + /* VGA */ + { V4L2_DV_BT_DMT_640X480P60, 0x88, 0x00 }, + { V4L2_DV_BT_DMT_640X480P72, 0x89, 0x00 }, + { V4L2_DV_BT_DMT_640X480P75, 0x8a, 0x00 }, + { V4L2_DV_BT_DMT_640X480P85, 0x8b, 0x00 }, + /* XGA */ + { V4L2_DV_BT_DMT_1024X768P60, 0x8c, 0x00 }, + { V4L2_DV_BT_DMT_1024X768P70, 0x8d, 0x00 }, + { V4L2_DV_BT_DMT_1024X768P75, 0x8e, 0x00 }, + { V4L2_DV_BT_DMT_1024X768P85, 0x8f, 0x00 }, + /* UXGA */ + { V4L2_DV_BT_DMT_1600X1200P60, 0x96, 0x00 }, +}; + +static void adv748x_hdmi_fill_format(struct adv748x_hdmi *hdmi, + struct v4l2_mbus_framefmt *fmt) +{ + memset(fmt, 0, sizeof(*fmt)); + + fmt->code = MEDIA_BUS_FMT_RGB888_1X24; + fmt->field = hdmi->timings.bt.interlaced ? + V4L2_FIELD_ALTERNATE : V4L2_FIELD_NONE; + + /* TODO: The colorspace depends on the AVI InfoFrame contents */ + fmt->colorspace = V4L2_COLORSPACE_SRGB; + + fmt->width = hdmi->timings.bt.width; + fmt->height = hdmi->timings.bt.height; + + if (fmt->field == V4L2_FIELD_ALTERNATE) + fmt->height /= 2; +} + +static void adv748x_fill_optional_dv_timings(struct v4l2_dv_timings *timings) +{ + v4l2_find_dv_timings_cap(timings, &adv748x_hdmi_timings_cap, + 250000, NULL, NULL); +} + +static bool adv748x_hdmi_has_signal(struct adv748x_state *state) +{ + int val; + + /* Check that VERT_FILTER and DE_REGEN is locked */ + val = hdmi_read(state, ADV748X_HDMI_LW1); + return (val & ADV748X_HDMI_LW1_VERT_FILTER) && + (val & ADV748X_HDMI_LW1_DE_REGEN); +} + +static int adv748x_hdmi_read_pixelclock(struct adv748x_state *state) +{ + int a, b; + + a = hdmi_read(state, ADV748X_HDMI_TMDS_1); + b = hdmi_read(state, ADV748X_HDMI_TMDS_2); + if (a < 0 || b < 0) + return -ENODATA; + + /* + * The high 9 bits store TMDS frequency measurement in MHz + * The low 7 bits of TMDS_2 store the 7-bit TMDS fractional frequency + * measurement in 1/128 MHz + */ + return ((a << 1) | (b >> 7)) * 1000000 + (b & 0x7f) * 1000000 / 128; +} + +/* + * adv748x_hdmi_set_de_timings: Adjust horizontal picture offset through DE + * + * HDMI CP uses a Data Enable synchronisation timing reference + * + * Vary the leading and trailing edge position of the DE signal output by the CP + * core. Values are stored as signed-twos-complement in one-pixel-clock units + * + * The start and end are shifted equally by the 10-bit shift value. + */ +static void adv748x_hdmi_set_de_timings(struct adv748x_state *state, int shift) +{ + u8 high, low; + + /* POS_HIGH stores bits 8 and 9 of both the start and end */ + high = ADV748X_CP_DE_POS_HIGH_SET; + high |= (shift & 0x300) >> 8; + low = shift & 0xff; + + /* The sequence of the writes is important and must be followed */ + cp_write(state, ADV748X_CP_DE_POS_HIGH, high); + cp_write(state, ADV748X_CP_DE_POS_END_LOW, low); + + high |= (shift & 0x300) >> 6; + + cp_write(state, ADV748X_CP_DE_POS_HIGH, high); + cp_write(state, ADV748X_CP_DE_POS_START_LOW, low); +} + +static int adv748x_hdmi_set_video_timings(struct adv748x_state *state, + const struct v4l2_dv_timings *timings) +{ + const struct adv748x_hdmi_video_standards *stds = + adv748x_hdmi_video_standards; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(adv748x_hdmi_video_standards); i++) { + if (!v4l2_match_dv_timings(timings, &stds[i].timings, 250000, + false)) + continue; + } + + if (i >= ARRAY_SIZE(adv748x_hdmi_video_standards)) + return -EINVAL; + + /* + * When setting cp_vid_std to either 720p, 1080i, or 1080p, the video + * will get shifted horizontally to the left in active video mode. + * The de_h_start and de_h_end controls are used to centre the picture + * correctly + */ + switch (stds[i].vid_std) { + case 0x53: /* 720p */ + adv748x_hdmi_set_de_timings(state, -40); + break; + case 0x54: /* 1080i */ + case 0x5e: /* 1080p */ + adv748x_hdmi_set_de_timings(state, -44); + break; + default: + adv748x_hdmi_set_de_timings(state, 0); + break; + } + + io_write(state, ADV748X_IO_VID_STD, stds[i].vid_std); + io_clrset(state, ADV748X_IO_DATAPATH, ADV748X_IO_DATAPATH_VFREQ_M, + stds[i].v_freq << ADV748X_IO_DATAPATH_VFREQ_SHIFT); + + return 0; +} + +/* ----------------------------------------------------------------------------- + * v4l2_subdev_video_ops + */ + +static int adv748x_hdmi_s_dv_timings(struct v4l2_subdev *sd, + struct v4l2_dv_timings *timings) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + int ret; + + if (!timings) + return -EINVAL; + + if (v4l2_match_dv_timings(&hdmi->timings, timings, 0, false)) + return 0; + + if (!v4l2_valid_dv_timings(timings, &adv748x_hdmi_timings_cap, + NULL, NULL)) + return -ERANGE; + + adv748x_fill_optional_dv_timings(timings); + + mutex_lock(&state->mutex); + + ret = adv748x_hdmi_set_video_timings(state, timings); + if (ret) + goto error; + + hdmi->timings = *timings; + + cp_clrset(state, ADV748X_CP_VID_ADJ_2, ADV748X_CP_VID_ADJ_2_INTERLACED, + timings->bt.interlaced ? + ADV748X_CP_VID_ADJ_2_INTERLACED : 0); + + mutex_unlock(&state->mutex); + + return 0; + +error: + mutex_unlock(&state->mutex); + return ret; +} + +static int adv748x_hdmi_g_dv_timings(struct v4l2_subdev *sd, + struct v4l2_dv_timings *timings) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + + mutex_lock(&state->mutex); + + *timings = hdmi->timings; + + mutex_unlock(&state->mutex); + + return 0; +} + +static int adv748x_hdmi_query_dv_timings(struct v4l2_subdev *sd, + struct v4l2_dv_timings *timings) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + struct v4l2_bt_timings *bt = &timings->bt; + int pixelclock; + int polarity; + + if (!timings) + return -EINVAL; + + memset(timings, 0, sizeof(struct v4l2_dv_timings)); + + if (!adv748x_hdmi_has_signal(state)) + return -ENOLINK; + + pixelclock = adv748x_hdmi_read_pixelclock(state); + if (pixelclock < 0) + return -ENODATA; + + timings->type = V4L2_DV_BT_656_1120; + + bt->pixelclock = pixelclock; + bt->interlaced = hdmi_read(state, ADV748X_HDMI_F1H1) & + ADV748X_HDMI_F1H1_INTERLACED ? + V4L2_DV_INTERLACED : V4L2_DV_PROGRESSIVE; + bt->width = hdmi_read16(state, ADV748X_HDMI_LW1, + ADV748X_HDMI_LW1_WIDTH_MASK); + bt->height = hdmi_read16(state, ADV748X_HDMI_F0H1, + ADV748X_HDMI_F0H1_HEIGHT_MASK); + bt->hfrontporch = hdmi_read16(state, ADV748X_HDMI_HFRONT_PORCH, + ADV748X_HDMI_HFRONT_PORCH_MASK); + bt->hsync = hdmi_read16(state, ADV748X_HDMI_HSYNC_WIDTH, + ADV748X_HDMI_HSYNC_WIDTH_MASK); + bt->hbackporch = hdmi_read16(state, ADV748X_HDMI_HBACK_PORCH, + ADV748X_HDMI_HBACK_PORCH_MASK); + bt->vfrontporch = hdmi_read16(state, ADV748X_HDMI_VFRONT_PORCH, + ADV748X_HDMI_VFRONT_PORCH_MASK) / 2; + bt->vsync = hdmi_read16(state, ADV748X_HDMI_VSYNC_WIDTH, + ADV748X_HDMI_VSYNC_WIDTH_MASK) / 2; + bt->vbackporch = hdmi_read16(state, ADV748X_HDMI_VBACK_PORCH, + ADV748X_HDMI_VBACK_PORCH_MASK) / 2; + + polarity = hdmi_read(state, 0x05); + bt->polarities = (polarity & BIT(4) ? V4L2_DV_VSYNC_POS_POL : 0) | + (polarity & BIT(5) ? V4L2_DV_HSYNC_POS_POL : 0); + + if (bt->interlaced == V4L2_DV_INTERLACED) { + bt->height += hdmi_read16(state, 0x0b, 0x1fff); + bt->il_vfrontporch = hdmi_read16(state, 0x2c, 0x3fff) / 2; + bt->il_vsync = hdmi_read16(state, 0x30, 0x3fff) / 2; + bt->il_vbackporch = hdmi_read16(state, 0x34, 0x3fff) / 2; + } + + adv748x_fill_optional_dv_timings(timings); + + /* + * No interrupt handling is implemented yet. + * There should be an IRQ when a cable is plugged and the new timings + * should be figured out and stored to state. + */ + hdmi->timings = *timings; + + return 0; +} + +static int adv748x_hdmi_g_input_status(struct v4l2_subdev *sd, u32 *status) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + + mutex_lock(&state->mutex); + + *status = adv748x_hdmi_has_signal(state) ? 0 : V4L2_IN_ST_NO_SIGNAL; + + mutex_unlock(&state->mutex); + + return 0; +} + +static int adv748x_hdmi_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + int ret; + + mutex_lock(&state->mutex); + + ret = adv748x_tx_power(hdmi->tx, enable); + if (ret) + goto done; + + if (adv748x_hdmi_has_signal(state)) + adv_dbg(state, "Detected HDMI signal\n"); + else + adv_dbg(state, "Couldn't detect HDMI video signal\n"); + +done: + mutex_unlock(&state->mutex); + return ret; +} + +static int adv748x_hdmi_g_pixelaspect(struct v4l2_subdev *sd, + struct v4l2_fract *aspect) +{ + aspect->numerator = 1; + aspect->denominator = 1; + + return 0; +} + +static const struct v4l2_subdev_video_ops adv748x_video_ops_hdmi = { + .s_dv_timings = adv748x_hdmi_s_dv_timings, + .g_dv_timings = adv748x_hdmi_g_dv_timings, + .query_dv_timings = adv748x_hdmi_query_dv_timings, + .g_input_status = adv748x_hdmi_g_input_status, + .s_stream = adv748x_hdmi_s_stream, + .g_pixelaspect = adv748x_hdmi_g_pixelaspect, +}; + +/* ----------------------------------------------------------------------------- + * v4l2_subdev_pad_ops + */ + +static int adv748x_hdmi_propagate_pixelrate(struct adv748x_hdmi *hdmi) +{ + struct v4l2_subdev *tx; + struct v4l2_dv_timings timings; + + tx = adv748x_get_remote_sd(&hdmi->pads[ADV748X_HDMI_SOURCE]); + if (!tx) + return -ENOLINK; + + adv748x_hdmi_query_dv_timings(&hdmi->sd, &timings); + + return adv748x_csi2_set_pixelrate(tx, timings.bt.pixelclock); +} + +static int adv748x_hdmi_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index != 0) + return -EINVAL; + + code->code = MEDIA_BUS_FMT_RGB888_1X24; + + return 0; +} + +static int adv748x_hdmi_get_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *sdformat) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct v4l2_mbus_framefmt *mbusformat; + + if (sdformat->pad != ADV748X_HDMI_SOURCE) + return -EINVAL; + + if (sdformat->which == V4L2_SUBDEV_FORMAT_TRY) { + mbusformat = v4l2_subdev_get_try_format(sd, sd_state, + sdformat->pad); + sdformat->format = *mbusformat; + } else { + adv748x_hdmi_fill_format(hdmi, &sdformat->format); + adv748x_hdmi_propagate_pixelrate(hdmi); + } + + return 0; +} + +static int adv748x_hdmi_set_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *sdformat) +{ + struct v4l2_mbus_framefmt *mbusformat; + + if (sdformat->pad != ADV748X_HDMI_SOURCE) + return -EINVAL; + + if (sdformat->which == V4L2_SUBDEV_FORMAT_ACTIVE) + return adv748x_hdmi_get_format(sd, sd_state, sdformat); + + mbusformat = v4l2_subdev_get_try_format(sd, sd_state, sdformat->pad); + *mbusformat = sdformat->format; + + return 0; +} + +static int adv748x_hdmi_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + + memset(edid->reserved, 0, sizeof(edid->reserved)); + + if (!hdmi->edid.present) + return -ENODATA; + + if (edid->start_block == 0 && edid->blocks == 0) { + edid->blocks = hdmi->edid.blocks; + return 0; + } + + if (edid->start_block >= hdmi->edid.blocks) + return -EINVAL; + + if (edid->start_block + edid->blocks > hdmi->edid.blocks) + edid->blocks = hdmi->edid.blocks - edid->start_block; + + memcpy(edid->edid, hdmi->edid.edid + edid->start_block * 128, + edid->blocks * 128); + + return 0; +} + +static inline int adv748x_hdmi_edid_write_block(struct adv748x_hdmi *hdmi, + unsigned int total_len, const u8 *val) +{ + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + int err = 0; + int i = 0; + int len = 0; + + adv_dbg(state, "%s: write EDID block (%d byte)\n", + __func__, total_len); + + while (!err && i < total_len) { + len = (total_len - i) > I2C_SMBUS_BLOCK_MAX ? + I2C_SMBUS_BLOCK_MAX : + (total_len - i); + + err = adv748x_write_block(state, ADV748X_PAGE_EDID, + i, val + i, len); + i += len; + } + + return err; +} + +static int adv748x_hdmi_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) +{ + struct adv748x_hdmi *hdmi = adv748x_sd_to_hdmi(sd); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + int err; + + memset(edid->reserved, 0, sizeof(edid->reserved)); + + if (edid->start_block != 0) + return -EINVAL; + + if (edid->blocks == 0) { + hdmi->edid.blocks = 0; + hdmi->edid.present = 0; + + /* Fall back to a 16:9 aspect ratio */ + hdmi->aspect_ratio.numerator = 16; + hdmi->aspect_ratio.denominator = 9; + + /* Disable the EDID */ + repeater_write(state, ADV748X_REPEATER_EDID_SZ, + edid->blocks << ADV748X_REPEATER_EDID_SZ_SHIFT); + + repeater_write(state, ADV748X_REPEATER_EDID_CTL, 0); + + return 0; + } + + if (edid->blocks > 4) { + edid->blocks = 4; + return -E2BIG; + } + + memcpy(hdmi->edid.edid, edid->edid, 128 * edid->blocks); + hdmi->edid.blocks = edid->blocks; + hdmi->edid.present = true; + + hdmi->aspect_ratio = v4l2_calc_aspect_ratio(edid->edid[0x15], + edid->edid[0x16]); + + err = adv748x_hdmi_edid_write_block(hdmi, 128 * edid->blocks, + hdmi->edid.edid); + if (err < 0) { + v4l2_err(sd, "error %d writing edid pad %d\n", err, edid->pad); + return err; + } + + repeater_write(state, ADV748X_REPEATER_EDID_SZ, + edid->blocks << ADV748X_REPEATER_EDID_SZ_SHIFT); + + repeater_write(state, ADV748X_REPEATER_EDID_CTL, + ADV748X_REPEATER_EDID_CTL_EN); + + return 0; +} + +static bool adv748x_hdmi_check_dv_timings(const struct v4l2_dv_timings *timings, + void *hdl) +{ + const struct adv748x_hdmi_video_standards *stds = + adv748x_hdmi_video_standards; + unsigned int i; + + for (i = 0; stds[i].timings.bt.width; i++) + if (v4l2_match_dv_timings(timings, &stds[i].timings, 0, false)) + return true; + + return false; +} + +static int adv748x_hdmi_enum_dv_timings(struct v4l2_subdev *sd, + struct v4l2_enum_dv_timings *timings) +{ + return v4l2_enum_dv_timings_cap(timings, &adv748x_hdmi_timings_cap, + adv748x_hdmi_check_dv_timings, NULL); +} + +static int adv748x_hdmi_dv_timings_cap(struct v4l2_subdev *sd, + struct v4l2_dv_timings_cap *cap) +{ + *cap = adv748x_hdmi_timings_cap; + return 0; +} + +static const struct v4l2_subdev_pad_ops adv748x_pad_ops_hdmi = { + .enum_mbus_code = adv748x_hdmi_enum_mbus_code, + .set_fmt = adv748x_hdmi_set_format, + .get_fmt = adv748x_hdmi_get_format, + .get_edid = adv748x_hdmi_get_edid, + .set_edid = adv748x_hdmi_set_edid, + .dv_timings_cap = adv748x_hdmi_dv_timings_cap, + .enum_dv_timings = adv748x_hdmi_enum_dv_timings, +}; + +/* ----------------------------------------------------------------------------- + * v4l2_subdev_ops + */ + +static const struct v4l2_subdev_ops adv748x_ops_hdmi = { + .video = &adv748x_video_ops_hdmi, + .pad = &adv748x_pad_ops_hdmi, +}; + +/* ----------------------------------------------------------------------------- + * Controls + */ + +static const char * const hdmi_ctrl_patgen_menu[] = { + "Disabled", + "Solid Color", + "Color Bars", + "Ramp Grey", + "Ramp Blue", + "Ramp Red", + "Checkered" +}; + +static int adv748x_hdmi_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct adv748x_hdmi *hdmi = adv748x_ctrl_to_hdmi(ctrl); + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + int ret; + u8 pattern; + + /* Enable video adjustment first */ + ret = cp_clrset(state, ADV748X_CP_VID_ADJ, + ADV748X_CP_VID_ADJ_ENABLE, + ADV748X_CP_VID_ADJ_ENABLE); + if (ret < 0) + return ret; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ret = cp_write(state, ADV748X_CP_BRI, ctrl->val); + break; + case V4L2_CID_HUE: + ret = cp_write(state, ADV748X_CP_HUE, ctrl->val); + break; + case V4L2_CID_CONTRAST: + ret = cp_write(state, ADV748X_CP_CON, ctrl->val); + break; + case V4L2_CID_SATURATION: + ret = cp_write(state, ADV748X_CP_SAT, ctrl->val); + break; + case V4L2_CID_TEST_PATTERN: + pattern = ctrl->val; + + /* Pattern is 0-indexed. Ctrl Menu is 1-indexed */ + if (pattern) { + pattern--; + pattern |= ADV748X_CP_PAT_GEN_EN; + } + + ret = cp_write(state, ADV748X_CP_PAT_GEN, pattern); + + break; + default: + return -EINVAL; + } + + return ret; +} + +static const struct v4l2_ctrl_ops adv748x_hdmi_ctrl_ops = { + .s_ctrl = adv748x_hdmi_s_ctrl, +}; + +static int adv748x_hdmi_init_controls(struct adv748x_hdmi *hdmi) +{ + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + + v4l2_ctrl_handler_init(&hdmi->ctrl_hdl, 5); + + /* Use our mutex for the controls */ + hdmi->ctrl_hdl.lock = &state->mutex; + + v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops, + V4L2_CID_BRIGHTNESS, ADV748X_CP_BRI_MIN, + ADV748X_CP_BRI_MAX, 1, ADV748X_CP_BRI_DEF); + v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops, + V4L2_CID_CONTRAST, ADV748X_CP_CON_MIN, + ADV748X_CP_CON_MAX, 1, ADV748X_CP_CON_DEF); + v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops, + V4L2_CID_SATURATION, ADV748X_CP_SAT_MIN, + ADV748X_CP_SAT_MAX, 1, ADV748X_CP_SAT_DEF); + v4l2_ctrl_new_std(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops, + V4L2_CID_HUE, ADV748X_CP_HUE_MIN, + ADV748X_CP_HUE_MAX, 1, ADV748X_CP_HUE_DEF); + + /* + * Todo: V4L2_CID_DV_RX_POWER_PRESENT should also be supported when + * interrupts are handled correctly + */ + + v4l2_ctrl_new_std_menu_items(&hdmi->ctrl_hdl, &adv748x_hdmi_ctrl_ops, + V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(hdmi_ctrl_patgen_menu) - 1, + 0, 0, hdmi_ctrl_patgen_menu); + + hdmi->sd.ctrl_handler = &hdmi->ctrl_hdl; + if (hdmi->ctrl_hdl.error) { + v4l2_ctrl_handler_free(&hdmi->ctrl_hdl); + return hdmi->ctrl_hdl.error; + } + + return v4l2_ctrl_handler_setup(&hdmi->ctrl_hdl); +} + +int adv748x_hdmi_init(struct adv748x_hdmi *hdmi) +{ + struct adv748x_state *state = adv748x_hdmi_to_state(hdmi); + static const struct v4l2_dv_timings cea1280x720 = + V4L2_DV_BT_CEA_1280X720P30; + int ret; + + hdmi->timings = cea1280x720; + + /* Initialise a default 16:9 aspect ratio */ + hdmi->aspect_ratio.numerator = 16; + hdmi->aspect_ratio.denominator = 9; + + adv748x_subdev_init(&hdmi->sd, state, &adv748x_ops_hdmi, + MEDIA_ENT_F_IO_DTV, "hdmi"); + + hdmi->pads[ADV748X_HDMI_SINK].flags = MEDIA_PAD_FL_SINK; + hdmi->pads[ADV748X_HDMI_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&hdmi->sd.entity, + ADV748X_HDMI_NR_PADS, hdmi->pads); + if (ret) + return ret; + + ret = adv748x_hdmi_init_controls(hdmi); + if (ret) + goto err_free_media; + + return 0; + +err_free_media: + media_entity_cleanup(&hdmi->sd.entity); + + return ret; +} + +void adv748x_hdmi_cleanup(struct adv748x_hdmi *hdmi) +{ + v4l2_device_unregister_subdev(&hdmi->sd); + media_entity_cleanup(&hdmi->sd.entity); + v4l2_ctrl_handler_free(&hdmi->ctrl_hdl); +} |