>-----Original Message----- >From: Ville Syrjälä [mailto:ville.syrjala@xxxxxxxxxxxxxxx] >Sent: Tuesday, February 12, 2019 10:35 PM >To: Shankar, Uma <uma.shankar@xxxxxxxxx> >Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Syrjala, Ville ><ville.syrjala@xxxxxxxxx>; emil.l.velikov@xxxxxxxxx; Lankhorst, Maarten ><maarten.lankhorst@xxxxxxxxx> >Subject: Re: [v15 3/4] drm: Add colorspace info to AVI Infoframe > >On Fri, Feb 08, 2019 at 11:54:55PM +0530, Uma Shankar wrote: >> This adds colorspace information to HDMI AVI infoframe. >> A helper function is added to program the same. >> >> v2: Moved this to drm core instead of i915 driver. >> >> v3: Exported the helper function. >> >> v4: Added separate HDMI specific macro as per CTA spec. >> This is separate from user exposed enum values. This is as per Ville's >> suggestion. >> >> v5: Appended BT709 and SMPTE 170M with YCC information as per Ville's >> review comment to be clear and not to be confused with RGB. >> >> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx> >> --- >> drivers/gpu/drm/drm_edid.c | 57 >> +++++++++++++++++++++++++++++++++++++++++++++ >> include/drm/drm_connector.h | 20 ++++++++++++++++ >> include/drm/drm_edid.h | 6 +++++ >> 3 files changed, 83 insertions(+) >> >> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c >> index 990b190..5202fea 100644 >> --- a/drivers/gpu/drm/drm_edid.c >> +++ b/drivers/gpu/drm/drm_edid.c >> @@ -4925,6 +4925,63 @@ static bool is_hdmi2_sink(struct drm_connector >> *connector) EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode); >> >> /** >> + * drm_hdmi_avi_infoframe_colorspace() - fill the HDMI AVI infoframe >> + * colorspace information >> + * @frame: HDMI AVI infoframe >> + * @conn_state: connector state >> + */ >> +void >> +drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame, >> + const struct drm_connector_state *conn_state) { >> + u32 colorimetry_val = conn_state->colorspace & >> + FULL_COLORIMETRY_MASK; >> + >> + switch (colorimetry_val) { >> + case DRM_MODE_COLORIMETRY_NO_DATA: >> + colorimetry_val = HDMI_COLORIMETRY_NO_DATA; >> + break; >> + case HDMI_COLORIMETRY_SMPTE_170M_YCC: >> + colorimetry_val = HDMI_COLORIMETRY_SMPTE_170M_YCC; >> + break; >> + case DRM_MODE_COLORIMETRY_BT709_YCC: >> + colorimetry_val = HDMI_COLORIMETRY_BT709_YCC; >> + break; >> + case DRM_MODE_COLORIMETRY_XVYCC_601: >> + colorimetry_val = HDMI_COLORIMETRY_XVYCC_601; >> + break; >> + case DRM_MODE_COLORIMETRY_XVYCC_709: >> + colorimetry_val = HDMI_COLORIMETRY_XVYCC_709; >> + break; >> + case DRM_MODE_COLORIMETRY_SYCC_601: >> + colorimetry_val = HDMI_COLORIMETRY_SYCC_601; >> + break; >> + case DRM_MODE_COLORIMETRY_OPYCC_601: >> + colorimetry_val = HDMI_COLORIMETRY_OPYCC_601; >> + break; >> + case DRM_MODE_COLORIMETRY_OPRGB: >> + colorimetry_val = HDMI_COLORIMETRY_OPRGB; >> + break; >> + case DRM_MODE_COLORIMETRY_BT2020_RGB: >> + case DRM_MODE_COLORIMETRY_BT2020_YCC: >> + colorimetry_val = HDMI_COLORIMETRY_BT2020_RGB; >> + break; >> + case DRM_MODE_COLORIMETRY_BT2020_CYCC: >> + colorimetry_val = HDMI_COLORIMETRY_BT2020_CYCC; >> + break; >> + default: >> + /* ToDo: DCI-P3 will be handled as part of ACE enabling */ >> + colorimetry_val = HDMI_COLORIMETRY_NO_DATA; >> + break; >> + } > >A table would probably be prettier. Ok, I will add that as table. >> + >> + frame->colorimetry = colorimetry_val & NORMAL_COLORIMETRY_MASK; >> + frame->extended_colorimetry = (colorimetry_val >> 2) & >> + EXTENDED_COLORIMETRY_MASK; >> +} >> +EXPORT_SYMBOL(drm_hdmi_avi_infoframe_colorspace); >> + >> +/** >> * drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe >> * quantization range information >> * @frame: HDMI AVI infoframe >> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h >> index 4d9aa2f..efacf29 100644 >> --- a/include/drm/drm_connector.h >> +++ b/include/drm/drm_connector.h >> @@ -288,6 +288,26 @@ enum drm_panel_orientation { >> #define DRM_MODE_DP_COLORIMETRY_RGB_WIDE_GAMUT 16 >> #define DRM_MODE_DP_COLORIMETRY_SCRGB 17 >> >> +/* HDMI Colorspace Spec Definitions */ >> +#define FULL_COLORIMETRY_MASK 0x1FF >> +#define NORMAL_COLORIMETRY_MASK 0x3 >> +#define EXTENDED_COLORIMETRY_MASK 0x7 >> +#define EXTENDED_ACE_COLORIMETRY_MASK 0xF >> + >> +#define HDMI_COLORIMETRY_NO_DATA 0x0 >> +#define HDMI_COLORIMETRY_SMPTE_170M_YCC 0x1 >> +#define HDMI_COLORIMETRY_BT709_YCC 0x2 >> +#define HDMI_COLORIMETRY_XVYCC_601 0x3 >> +#define HDMI_COLORIMETRY_XVYCC_709 0x7 >> +#define HDMI_COLORIMETRY_SYCC_601 0xB >> +#define HDMI_COLORIMETRY_OPYCC_601 0xF >> +#define HDMI_COLORIMETRY_OPRGB 0x13 >> +#define HDMI_COLORIMETRY_BT2020_CYCC 0x17 >> +#define HDMI_COLORIMETRY_BT2020_RGB 0x1C >> +#define HDMI_COLORIMETRY_BT2020_YCC 0x1C > >Those should be 0x1b > >I would have suggested something like: >#define C0(x) ((x) << 0) >#define C1(x) ((x) << 1) >#define EC0(x) ((x) << 2) >#define EC1(x) ((x) << 3) >etc. > >to make it easier to cross check against the spec. Or if a define for each bit is too >much maybe just something like: > >#define C(x) ((x) << 0) >#define EC(x) ((x) << 2) >#define ACE(x) ((x) << 5) This looks good, will modify as per this. >One problem is namespace pollution though. But since these aren't used elsewhere >we could move them into .c file instead. Or maybe we should stuff them into >linux/hdmi.h and avoid the namespace pollution by C/EC/ACE by using an enum and >undeffing the helper macros after the enum has been defined. The use of an enum >would be in line with other stuff in hdmi.h. Since no one else is supposed to be using this, should I just move it to the C file where we are using them to avoid any namespace issues as such. If that is fine, will send out the next version addressing all the comments. Thanks Ville for the review and valuable inputs. Regards, Uma Shankar > >> +#define HDMI_COLORIMETRY_DCI_P3_RGB_D65 0x1F >> +#define HDMI_COLORIMETRY_DCI_P3_RGB_THEATER 0x3F >> + >> /** >> * struct drm_display_info - runtime data about the connected sink >> * >> diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index >> 8dc1a08..9d3b5b9 100644 >> --- a/include/drm/drm_edid.h >> +++ b/include/drm/drm_edid.h >> @@ -331,6 +331,7 @@ struct cea_sad { >> >> struct drm_encoder; >> struct drm_connector; >> +struct drm_connector_state; >> struct drm_display_mode; >> >> int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads); @@ >> -358,6 +359,11 @@ int drm_av_sync_delay(struct drm_connector >> *connector, drm_hdmi_vendor_infoframe_from_display_mode(struct >hdmi_vendor_infoframe *frame, >> struct drm_connector *connector, >> const struct drm_display_mode *mode); >> + >> +void >> +drm_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame, >> + const struct drm_connector_state *conn_state); >> + >> void >> drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, >> struct drm_connector *connector, >> -- >> 1.9.1 >> >> _______________________________________________ >> dri-devel mailing list >> dri-devel@xxxxxxxxxxxxxxxxxxxxx >> https://lists.freedesktop.org/mailman/listinfo/dri-devel > >-- >Ville Syrjälä >Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
