> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Gwan-
> gyeong Mun
> Sent: Tuesday, February 4, 2020 4:50 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: linux-fbdev@xxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH v3 07/17] drm: Add logging function for DP VSC SDP
>
> When receiving video it is very useful to be able to log DP VSC SDP.
> This greatly simplifies debugging.
>
> v2: Minor style fix
> v3: Move logging functions to drm core [Jani N]
Looks good to me.
Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>
> Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
> ---
> drivers/gpu/drm/drm_dp_helper.c | 174 ++++++++++++++++++++++++++++++++
> include/drm/drm_dp_helper.h | 3 +
> 2 files changed, 177 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
> index 5a103e9b3c86..5e3aef8c32e0 100644
> --- a/drivers/gpu/drm/drm_dp_helper.c
> +++ b/drivers/gpu/drm/drm_dp_helper.c
> @@ -1395,3 +1395,177 @@ int drm_dp_dsc_sink_supported_input_bpcs(const u8
> dsc_dpcd[DP_DSC_RECEIVER_CAP_S
> return num_bpc;
> }
> EXPORT_SYMBOL(drm_dp_dsc_sink_supported_input_bpcs);
> +
> +static const char *dp_colorspace_get_name(enum dp_colorspace
> +colorspace) {
> + if (colorspace < 0 || colorspace > DP_COLORSPACE_RESERVED)
> + return "Invalid";
> +
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "RGB";
> + case DP_COLORSPACE_YUV444:
> + return "YUV444";
> + case DP_COLORSPACE_YUV422:
> + return "YUV422";
> + case DP_COLORSPACE_YUV420:
> + return "YUV420";
> + case DP_COLORSPACE_Y_ONLY:
> + return "Y_ONLY";
> + case DP_COLORSPACE_RAW:
> + return "RAW";
> + default:
> + return "Reserved";
> + }
> +}
> +
> +static const char *dp_colorimetry_get_name(enum dp_colorspace colorspace,
> + enum dp_colorimetry colorimetry) {
> + if (colorspace < 0 || colorspace > DP_COLORSPACE_RESERVED)
> + return "Invalid";
> +
> + switch (colorimetry) {
> + case DP_COLORIMETRY_DEFAULT:
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "sRGB";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "BT.601";
> + case DP_COLORSPACE_Y_ONLY:
> + return "DICOM PS3.14";
> + case DP_COLORSPACE_RAW:
> + return "Custom Color Profile";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_RGB_WIDE_FIXED: /* and
> DP_COLORIMETRY_BT709_YCC */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "Wide Fixed";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "BT.709";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_RGB_WIDE_FLOAT: /* and
> DP_COLORIMETRY_XVYCC_601 */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "Wide Float";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "xvYCC 601";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_OPRGB: /* and DP_COLORIMETRY_XVYCC_709 */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "OpRGB";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "xvYCC 709";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_DCI_P3_RGB: /* and DP_COLORIMETRY_SYCC_601
> */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "DCI-P3";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "sYCC 601";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_RGB_CUSTOM: /* and
> DP_COLORIMETRY_OPYCC_601 */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "Custom Profile";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "OpYCC 601";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_BT2020_RGB: /* and
> DP_COLORIMETRY_BT2020_CYCC */
> + switch (colorspace) {
> + case DP_COLORSPACE_RGB:
> + return "BT.2020 RGB";
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "BT.2020 CYCC";
> + default:
> + return "Reserved";
> + }
> + case DP_COLORIMETRY_BT2020_YCC:
> + switch (colorspace) {
> + case DP_COLORSPACE_YUV444:
> + case DP_COLORSPACE_YUV422:
> + case DP_COLORSPACE_YUV420:
> + return "BT.2020 YCC";
> + default:
> + return "Reserved";
> + }
> + default:
> + return "Invalid";
> + }
> +}
> +
> +static const char *dp_dynamic_range_get_name(enum dp_dynamic_range
> +dynamic_range) {
> + switch (dynamic_range) {
> + case DP_DYNAMIC_RANGE_VESA:
> + return "VESA range";
> + case DP_DYNAMIC_RANGE_CTA:
> + return "CTA range";
> + default:
> + return "Invalid";
> + }
> +}
> +
> +static const char *dp_content_type_get_name(enum dp_content_type
> +content_type) {
> + switch (content_type) {
> + case DP_CONTENT_TYPE_NOT_DEFINED:
> + return "Not defined";
> + case DP_CONTENT_TYPE_GRAPHICS:
> + return "Graphics";
> + case DP_CONTENT_TYPE_PHOTO:
> + return "Photo";
> + case DP_CONTENT_TYPE_VIDEO:
> + return "Video";
> + case DP_CONTENT_TYPE_GAME:
> + return "Game";
> + default:
> + return "Reserved";
> + }
> +}
> +
> +void drm_dp_vsc_sdp_log(const char *level, struct device *dev,
> + const struct drm_dp_vsc_sdp *vsc)
> +{
> +#define DP_SDP_LOG(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
> + DP_SDP_LOG("DP SDP: %s, revision %u, length %u\n", "VSC",
> + vsc->revision, vsc->length);
> + DP_SDP_LOG(" colorspace: %s\n",
> + dp_colorspace_get_name(vsc->colorspace));
> + DP_SDP_LOG(" colorimetry: %s\n",
> + dp_colorimetry_get_name(vsc->colorspace, vsc->colorimetry));
> + DP_SDP_LOG(" bpc: %u\n", vsc->bpc);
> + DP_SDP_LOG(" dynamic range: %s\n",
> + dp_dynamic_range_get_name(vsc->dynamic_range));
> + DP_SDP_LOG(" content type: %s\n",
> + dp_content_type_get_name(vsc->content_type));
> +#undef DP_SDP_LOG
> +}
> +EXPORT_SYMBOL(drm_dp_vsc_sdp_log);
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index
> c098727681fa..00b775df6241 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -1266,6 +1266,9 @@ struct drm_dp_vsc_sdp {
> enum dp_content_type content_type;
> };
>
> +void drm_dp_vsc_sdp_log(const char *level, struct device *dev,
> + const struct drm_dp_vsc_sdp *vsc);
> +
> int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]);
>
> static inline int
> --
> 2.24.1
>
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