On Fri, Jan 26, 2018 at 06:49:17PM -0800, Dhinakaran Pandiyan wrote:
> intel_edp_init_dpcd() is cluttered with PSR specific DPCD checks and
> intel_dp.c is huge.
Yes please! Good idea.
> No functional change intended.
Reviewed-by: David Weinehall <david.weineh...@linux.intel.com>
> Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
> ---
> drivers/gpu/drm/i915/intel_dp.c | 64 +------------------------------------
> drivers/gpu/drm/i915/intel_drv.h | 1 +
> drivers/gpu/drm/i915/intel_psr.c | 68
> ++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 70 insertions(+), 63 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index a2e887999915..2454326690fb 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -3135,35 +3135,6 @@ intel_dp_get_link_status(struct intel_dp *intel_dp,
> uint8_t link_status[DP_LINK_
> DP_LINK_STATUS_SIZE) == DP_LINK_STATUS_SIZE;
> }
>
> -static bool intel_dp_get_y_cord_status(struct intel_dp *intel_dp)
> -{
> - uint8_t psr_caps = 0;
> -
> - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_CAPS, &psr_caps) != 1)
> - return false;
> - return psr_caps & DP_PSR2_SU_Y_COORDINATE_REQUIRED;
> -}
> -
> -static bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
> -{
> - uint8_t dprx = 0;
> -
> - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
> - &dprx) != 1)
> - return false;
> - return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED;
> -}
> -
> -static bool intel_dp_get_alpm_status(struct intel_dp *intel_dp)
> -{
> - uint8_t alpm_caps = 0;
> -
> - if (drm_dp_dpcd_readb(&intel_dp->aux, DP_RECEIVER_ALPM_CAP,
> - &alpm_caps) != 1)
> - return false;
> - return alpm_caps & DP_ALPM_CAP;
> -}
> -
> /* These are source-specific values. */
> uint8_t
> intel_dp_voltage_max(struct intel_dp *intel_dp)
> @@ -3714,40 +3685,7 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp)
> dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] &
> DP_NO_AUX_HANDSHAKE_LINK_TRAINING;
>
> - /* Check if the panel supports PSR */
> - drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT,
> - intel_dp->psr_dpcd,
> - sizeof(intel_dp->psr_dpcd));
> - if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) {
> - dev_priv->psr.sink_support = true;
> - DRM_DEBUG_KMS("Detected EDP PSR Panel.\n");
> - }
> -
> - if (INTEL_GEN(dev_priv) >= 9 &&
> - (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) {
> - uint8_t frame_sync_cap;
> -
> - dev_priv->psr.sink_support = true;
> - if (drm_dp_dpcd_readb(&intel_dp->aux,
> - DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP,
> - &frame_sync_cap) != 1)
> - frame_sync_cap = 0;
> - dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false;
> - /* PSR2 needs frame sync as well */
> - dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync;
> - DRM_DEBUG_KMS("PSR2 %s on sink",
> - dev_priv->psr.psr2_support ? "supported" : "not
> supported");
> -
> - if (dev_priv->psr.psr2_support) {
> - dev_priv->psr.y_cord_support =
> - intel_dp_get_y_cord_status(intel_dp);
> - dev_priv->psr.colorimetry_support =
> - intel_dp_get_colorimetry_status(intel_dp);
> - dev_priv->psr.alpm =
> - intel_dp_get_alpm_status(intel_dp);
> - }
> -
> - }
> + intel_psr_init_dpcd(intel_dp);
>
> /*
> * Read the eDP display control registers.
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 3cee54bc0352..a340bc04dad8 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1851,6 +1851,7 @@ bool is_hdcp_supported(struct drm_i915_private
> *dev_priv, enum port port);
>
> /* intel_psr.c */
> #define CAN_PSR(dev_priv) (HAS_PSR(dev_priv) && dev_priv->psr.sink_support)
> +void intel_psr_init_dpcd(struct intel_dp *intel_dp);
> void intel_psr_enable(struct intel_dp *intel_dp,
> const struct intel_crtc_state *crtc_state);
> void intel_psr_disable(struct intel_dp *intel_dp,
> diff --git a/drivers/gpu/drm/i915/intel_psr.c
> b/drivers/gpu/drm/i915/intel_psr.c
> index c12af1118647..a1b878449e83 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -56,6 +56,74 @@
> #include "intel_drv.h"
> #include "i915_drv.h"
>
> +static bool intel_dp_get_y_cord_status(struct intel_dp *intel_dp)
> +{
> + uint8_t psr_caps = 0;
> +
> + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_CAPS, &psr_caps) != 1)
> + return false;
> + return psr_caps & DP_PSR2_SU_Y_COORDINATE_REQUIRED;
> +}
> +
> +static bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp)
> +{
> + uint8_t dprx = 0;
> +
> + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_DPRX_FEATURE_ENUMERATION_LIST,
> + &dprx) != 1)
> + return false;
> + return dprx & DP_VSC_SDP_EXT_FOR_COLORIMETRY_SUPPORTED;
> +}
> +
> +static bool intel_dp_get_alpm_status(struct intel_dp *intel_dp)
> +{
> + uint8_t alpm_caps = 0;
> +
> + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_RECEIVER_ALPM_CAP,
> + &alpm_caps) != 1)
> + return false;
> + return alpm_caps & DP_ALPM_CAP;
> +}
> +
> +void intel_psr_init_dpcd(struct intel_dp *intel_dp)
> +{
> + struct drm_i915_private *dev_priv =
> + to_i915(dp_to_dig_port(intel_dp)->base.base.dev);
> +
> + drm_dp_dpcd_read(&intel_dp->aux, DP_PSR_SUPPORT, intel_dp->psr_dpcd,
> + sizeof(intel_dp->psr_dpcd));
> +
> + if (intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED) {
> + dev_priv->psr.sink_support = true;
> + DRM_DEBUG_KMS("Detected EDP PSR Panel.\n");
> + }
> +
> + if (INTEL_GEN(dev_priv) >= 9 &&
> + (intel_dp->psr_dpcd[0] & DP_PSR2_IS_SUPPORTED)) {
> + uint8_t frame_sync_cap;
> +
> + dev_priv->psr.sink_support = true;
> + if (drm_dp_dpcd_readb(&intel_dp->aux,
> + DP_SINK_DEVICE_AUX_FRAME_SYNC_CAP,
> + &frame_sync_cap) != 1)
> + frame_sync_cap = 0;
> + dev_priv->psr.aux_frame_sync = frame_sync_cap ? true : false;
> + /* PSR2 needs frame sync as well */
> + dev_priv->psr.psr2_support = dev_priv->psr.aux_frame_sync;
> + DRM_DEBUG_KMS("PSR2 %s on sink",
> + dev_priv->psr.psr2_support ? "supported" : "not
> supported");
> +
> + if (dev_priv->psr.psr2_support) {
> + dev_priv->psr.y_cord_support =
> + intel_dp_get_y_cord_status(intel_dp);
> + dev_priv->psr.colorimetry_support =
> + intel_dp_get_colorimetry_status(intel_dp);
> + dev_priv->psr.alpm =
> + intel_dp_get_alpm_status(intel_dp);
> + }
> + }
> +}
> +
> static bool vlv_is_psr_active_on_pipe(struct drm_device *dev, int pipe)
> {
> struct drm_i915_private *dev_priv = to_i915(dev);
> --
> 2.14.1
>
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