diff options
Diffstat (limited to 'drivers/media/i2c/adv7511.c')
| -rw-r--r-- | drivers/media/i2c/adv7511.c | 229 |
1 files changed, 222 insertions, 7 deletions
diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c index f98acf4aafd4..81736aaf0f31 100644 --- a/drivers/media/i2c/adv7511.c +++ b/drivers/media/i2c/adv7511.c @@ -26,6 +26,7 @@ #include <linux/videodev2.h> #include <linux/gpio.h> #include <linux/workqueue.h> +#include <linux/hdmi.h> #include <linux/v4l2-dv-timings.h> #include <media/v4l2-device.h> #include <media/v4l2-common.h> @@ -96,6 +97,10 @@ struct adv7511_state { bool have_monitor; /* timings from s_dv_timings */ struct v4l2_dv_timings dv_timings; + u32 fmt_code; + u32 colorspace; + u32 ycbcr_enc; + u32 quantization; /* controls */ struct v4l2_ctrl *hdmi_mode_ctrl; struct v4l2_ctrl *hotplug_ctrl; @@ -779,26 +784,234 @@ static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) { struct adv7511_state *state = get_adv7511_state(sd); + memset(edid->reserved, 0, sizeof(edid->reserved)); + if (edid->pad != 0) return -EINVAL; - if ((edid->blocks == 0) || (edid->blocks > 256)) - return -EINVAL; - if (!state->edid.segments) { - v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n"); - return -ENODATA; + + if (edid->start_block == 0 && edid->blocks == 0) { + edid->blocks = state->edid.segments * 2; + return 0; } + + if (state->edid.segments == 0) + return -ENODATA; + if (edid->start_block >= state->edid.segments * 2) - return -E2BIG; - if ((edid->blocks + edid->start_block) >= state->edid.segments * 2) + return -EINVAL; + + if (edid->start_block + edid->blocks > state->edid.segments * 2) edid->blocks = state->edid.segments * 2 - edid->start_block; memcpy(edid->edid, &state->edid.data[edid->start_block * 128], 128 * edid->blocks); + + return 0; +} + +static int adv7511_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->pad != 0) + return -EINVAL; + + switch (code->index) { + case 0: + code->code = MEDIA_BUS_FMT_RGB888_1X24; + break; + case 1: + code->code = MEDIA_BUS_FMT_YUYV8_1X16; + break; + case 2: + code->code = MEDIA_BUS_FMT_UYVY8_1X16; + break; + default: + return -EINVAL; + } + return 0; +} + +static void adv7511_fill_format(struct adv7511_state *state, + struct v4l2_mbus_framefmt *format) +{ + memset(format, 0, sizeof(*format)); + + format->width = state->dv_timings.bt.width; + format->height = state->dv_timings.bt.height; + format->field = V4L2_FIELD_NONE; +} + +static int adv7511_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *format) +{ + struct adv7511_state *state = get_adv7511_state(sd); + + if (format->pad != 0) + return -EINVAL; + + adv7511_fill_format(state, &format->format); + + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *fmt; + + fmt = v4l2_subdev_get_try_format(fh, format->pad); + format->format.code = fmt->code; + format->format.colorspace = fmt->colorspace; + format->format.ycbcr_enc = fmt->ycbcr_enc; + format->format.quantization = fmt->quantization; + } else { + format->format.code = state->fmt_code; + format->format.colorspace = state->colorspace; + format->format.ycbcr_enc = state->ycbcr_enc; + format->format.quantization = state->quantization; + } + + return 0; +} + +static int adv7511_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *format) +{ + struct adv7511_state *state = get_adv7511_state(sd); + /* + * Bitfield namings come the CEA-861-F standard, table 8 "Auxiliary + * Video Information (AVI) InfoFrame Format" + * + * c = Colorimetry + * ec = Extended Colorimetry + * y = RGB or YCbCr + * q = RGB Quantization Range + * yq = YCC Quantization Range + */ + u8 c = HDMI_COLORIMETRY_NONE; + u8 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + u8 y = HDMI_COLORSPACE_RGB; + u8 q = HDMI_QUANTIZATION_RANGE_DEFAULT; + u8 yq = HDMI_YCC_QUANTIZATION_RANGE_LIMITED; + + if (format->pad != 0) + return -EINVAL; + switch (format->format.code) { + case MEDIA_BUS_FMT_UYVY8_1X16: + case MEDIA_BUS_FMT_YUYV8_1X16: + case MEDIA_BUS_FMT_RGB888_1X24: + break; + default: + return -EINVAL; + } + + adv7511_fill_format(state, &format->format); + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { + struct v4l2_mbus_framefmt *fmt; + + fmt = v4l2_subdev_get_try_format(fh, format->pad); + fmt->code = format->format.code; + fmt->colorspace = format->format.colorspace; + fmt->ycbcr_enc = format->format.ycbcr_enc; + fmt->quantization = format->format.quantization; + return 0; + } + + switch (format->format.code) { + case MEDIA_BUS_FMT_UYVY8_1X16: + adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01); + adv7511_wr_and_or(sd, 0x16, 0x03, 0xb8); + y = HDMI_COLORSPACE_YUV422; + break; + case MEDIA_BUS_FMT_YUYV8_1X16: + adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01); + adv7511_wr_and_or(sd, 0x16, 0x03, 0xbc); + y = HDMI_COLORSPACE_YUV422; + break; + case MEDIA_BUS_FMT_RGB888_1X24: + default: + adv7511_wr_and_or(sd, 0x15, 0xf0, 0x00); + adv7511_wr_and_or(sd, 0x16, 0x03, 0x00); + break; + } + state->fmt_code = format->format.code; + state->colorspace = format->format.colorspace; + state->ycbcr_enc = format->format.ycbcr_enc; + state->quantization = format->format.quantization; + + switch (format->format.colorspace) { + case V4L2_COLORSPACE_ADOBERGB: + c = HDMI_COLORIMETRY_EXTENDED; + ec = y ? HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601 : + HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB; + break; + case V4L2_COLORSPACE_SMPTE170M: + c = y ? HDMI_COLORIMETRY_ITU_601 : HDMI_COLORIMETRY_NONE; + if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV601) { + c = HDMI_COLORIMETRY_EXTENDED; + ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + } + break; + case V4L2_COLORSPACE_REC709: + c = y ? HDMI_COLORIMETRY_ITU_709 : HDMI_COLORIMETRY_NONE; + if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV709) { + c = HDMI_COLORIMETRY_EXTENDED; + ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_709; + } + break; + case V4L2_COLORSPACE_SRGB: + c = y ? HDMI_COLORIMETRY_EXTENDED : HDMI_COLORIMETRY_NONE; + ec = y ? HDMI_EXTENDED_COLORIMETRY_S_YCC_601 : + HDMI_EXTENDED_COLORIMETRY_XV_YCC_601; + break; + case V4L2_COLORSPACE_BT2020: + c = HDMI_COLORIMETRY_EXTENDED; + if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_BT2020_CONST_LUM) + ec = 5; /* Not yet available in hdmi.h */ + else + ec = 6; /* Not yet available in hdmi.h */ + break; + default: + break; + } + + /* + * CEA-861-F says that for RGB formats the YCC range must match the + * RGB range, although sources should ignore the YCC range. + * + * The RGB quantization range shouldn't be non-zero if the EDID doesn't + * have the Q bit set in the Video Capabilities Data Block, however this + * isn't checked at the moment. The assumption is that the application + * knows the EDID and can detect this. + * + * The same is true for the YCC quantization range: non-standard YCC + * quantization ranges should only be sent if the EDID has the YQ bit + * set in the Video Capabilities Data Block. + */ + switch (format->format.quantization) { + case V4L2_QUANTIZATION_FULL_RANGE: + q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT : + HDMI_QUANTIZATION_RANGE_FULL; + yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_FULL; + break; + case V4L2_QUANTIZATION_LIM_RANGE: + q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT : + HDMI_QUANTIZATION_RANGE_LIMITED; + yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_LIMITED; + break; + } + + adv7511_wr_and_or(sd, 0x4a, 0xbf, 0); + adv7511_wr_and_or(sd, 0x55, 0x9f, y << 5); + adv7511_wr_and_or(sd, 0x56, 0x3f, c << 6); + adv7511_wr_and_or(sd, 0x57, 0x83, (ec << 4) | (q << 2)); + adv7511_wr_and_or(sd, 0x59, 0x0f, yq << 4); + adv7511_wr_and_or(sd, 0x4a, 0xff, 1); + return 0; } static const struct v4l2_subdev_pad_ops adv7511_pad_ops = { .get_edid = adv7511_get_edid, + .enum_mbus_code = adv7511_enum_mbus_code, + .get_fmt = adv7511_get_fmt, + .set_fmt = adv7511_set_fmt, .enum_dv_timings = adv7511_enum_dv_timings, .dv_timings_cap = adv7511_dv_timings_cap, }; @@ -1116,6 +1329,8 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * return -ENODEV; } memcpy(&state->pdata, pdata, sizeof(state->pdata)); + state->fmt_code = MEDIA_BUS_FMT_RGB888_1X24; + state->colorspace = V4L2_COLORSPACE_SRGB; sd = &state->sd; |