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drm/i915/display: Enable HDR for Parade based lspcon 

Enable HDR for LSPCON based on Parade along with MCA.

v2: Added a helper for status reg as suggested by Ville.

v3: Removed a redundant variable, added Ville's RB.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Vipin Anand <vipin.anand@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201130204738.2443-11-uma.shankar@intel.com
This commit is contained in:
Uma Shankar 2020-12-01 02:17:33 +05:30
parent 84ab44b757
commit c5044aee40
1 changed files with 11 additions and 6 deletions
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17
drivers/gpu/drm/i915/display/intel_lspcon.c
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@ -36,6 +36,7 @@
#define LSPCON_VENDOR_MCA_OUI 0x0060AD
#define DPCD_MCA_LSPCON_HDR_STATUS 0x70003
#define DPCD_PARADE_LSPCON_HDR_STATUS 0x00511
/* AUX addresses to write MCA AVI IF */
#define LSPCON_MCA_AVI_IF_WRITE_OFFSET 0x5C0
@ -106,6 +107,14 @@ static bool lspcon_detect_vendor(struct intel_lspcon *lspcon)
return true;
}
static u32 get_hdr_status_reg(struct intel_lspcon *lspcon)
{
if (lspcon->vendor == LSPCON_VENDOR_MCA)
return DPCD_MCA_LSPCON_HDR_STATUS;
else
return DPCD_PARADE_LSPCON_HDR_STATUS;
}
void lspcon_detect_hdr_capability(struct intel_lspcon *lspcon)
{
struct intel_digital_port *dig_port =
@ -115,12 +124,8 @@ void lspcon_detect_hdr_capability(struct intel_lspcon *lspcon)
u8 hdr_caps;
int ret;
/* Enable HDR for MCA based LSPCON devices */
if (lspcon->vendor == LSPCON_VENDOR_MCA)
ret = drm_dp_dpcd_read(&dp->aux, DPCD_MCA_LSPCON_HDR_STATUS,
&hdr_caps, 1);
else
return;
ret = drm_dp_dpcd_read(&dp->aux, get_hdr_status_reg(lspcon),
&hdr_caps, 1);
if (ret < 0) {
drm_dbg_kms(dev, "HDR capability detection failed\n");