From: Gwan-gyeong Mun Date: Fri, 23 Jul 2021 17:42:37 +0000 (-0700) Subject: drm/i915/dg2: Update lane disable power state during PSR X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=7711749a604996a41e14b66e3163e045a89fe8e1;p=uclinux-h8%2Flinux.git drm/i915/dg2: Update lane disable power state during PSR The PSR enable/disable sequences now require that we program an extra register in the PHY to adjust the lane disable power setting. Bspec: 49274 Bspec: 53885 Cc: Anusha Srivatsa Signed-off-by: Matt Roper Signed-off-by: Gwan-gyeong Mun Reviewed-by: Anusha Srivatsa Link: https://patchwork.freedesktop.org/patch/msgid/20210723174239.1551352-29-matthew.d.roper@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 9393b35cd444..1b0daf649e82 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -32,6 +32,7 @@ #include "intel_dp_aux.h" #include "intel_hdmi.h" #include "intel_psr.h" +#include "intel_snps_phy.h" #include "intel_sprite.h" #include "skl_universal_plane.h" @@ -1212,6 +1213,7 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp, { struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port); struct intel_encoder *encoder = &dig_port->base; u32 val; @@ -1237,6 +1239,7 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp, intel_dp_compute_psr_vsc_sdp(intel_dp, crtc_state, conn_state, &intel_dp->psr.vsc); intel_write_dp_vsc_sdp(encoder, crtc_state, &intel_dp->psr.vsc); + intel_snps_phy_update_psr_power_state(dev_priv, phy, true); intel_psr_enable_sink(intel_dp); intel_psr_enable_source(intel_dp); intel_dp->psr.enabled = true; @@ -1333,6 +1336,8 @@ static void intel_psr_wait_exit_locked(struct intel_dp *intel_dp) static void intel_psr_disable_locked(struct intel_dp *intel_dp) { struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + enum phy phy = intel_port_to_phy(dev_priv, + dp_to_dig_port(intel_dp)->base.port); lockdep_assert_held(&intel_dp->psr.lock); @@ -1358,6 +1363,8 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp) TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder), TRANS_SET_CONTEXT_LATENCY_MASK, 0); + intel_snps_phy_update_psr_power_state(dev_priv, phy, false); + /* Disable PSR on Sink */ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0); diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c index f0c30d3d2dfb..18b52b64af95 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.c +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c @@ -36,6 +36,20 @@ void intel_snps_phy_wait_for_calibration(struct drm_i915_private *dev_priv) } } +void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv, + enum phy phy, bool enable) +{ + u32 val; + + if (!intel_phy_is_snps(dev_priv, phy)) + return; + + val = REG_FIELD_PREP(SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, + enable ? 2 : 3); + intel_uncore_rmw(&dev_priv->uncore, SNPS_PHY_TX_REQ(phy), + SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR, val); +} + static const u32 dg2_ddi_translations[] = { /* VS 0, pre-emph 0 */ REG_FIELD_PREP(SNPS_PHY_TX_EQ_MAIN, 26), diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.h b/drivers/gpu/drm/i915/display/intel_snps_phy.h index 6aa33ff729ec..6261ff88ef5c 100644 --- a/drivers/gpu/drm/i915/display/intel_snps_phy.h +++ b/drivers/gpu/drm/i915/display/intel_snps_phy.h @@ -12,8 +12,11 @@ struct drm_i915_private; struct intel_encoder; struct intel_crtc_state; struct intel_mpllb_state; +enum phy; void intel_snps_phy_wait_for_calibration(struct drm_i915_private *dev_priv); +void intel_snps_phy_update_psr_power_state(struct drm_i915_private *dev_priv, + enum phy phy, bool enable); int intel_mpllb_calc_state(struct intel_crtc_state *crtc_state, struct intel_encoder *encoder); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 7306832921f8..51301fa9da14 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2332,6 +2332,9 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define SNPS_PHY_REF_CONTROL(phy) _MMIO_SNPS(phy, 0x168188) #define SNPS_PHY_REF_CONTROL_REF_RANGE REG_GENMASK(31, 27) +#define SNPS_PHY_TX_REQ(phy) _MMIO_SNPS(phy, 0x168200) +#define SNPS_PHY_TX_REQ_LN_DIS_PWR_STATE_PSR REG_GENMASK(31, 30) + #define SNPS_PHY_TX_EQ(ln, phy) _MMIO_SNPS_LN(ln, phy, 0x168300) #define SNPS_PHY_TX_EQ_MAIN REG_GENMASK(23, 18) #define SNPS_PHY_TX_EQ_POST REG_GENMASK(15, 10)