From: Mitul Golani Date: Fri, 22 Mar 2024 03:11:56 +0000 (+0530) Subject: drm/i915/display: Compute vrr_vsync params X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e8cd188e91bbd0f40761fafcd4c3cce55651685a;p=linux.git drm/i915/display: Compute vrr_vsync params Compute vrr_vsync_start/end, which sets the position for hardware to send the Vsync at a fixed position relative to the end of the Vblank. --v2: - Updated VSYNC_START/END macros to VRR_VSYNC_START/END. (Ankit) - Updated bit fields of VRR_VSYNC_START/END. (Ankit) --v3: - Add PIPE_CONF_CHECK_I(vrr.vsync_start/end). - Read/write vrr_vsync params only when we intend to send adaptive_sync sdp. --v4: - Use VRR_SYNC_START/END macros correctly. --v5: - Send AS SDP only when VRR is enabled. --v6: - Add TRANS_VRR_VSYNC before enabling VRR as per bspec. (Ankit) Signed-off-by: Mitul Golani Reviewed-by: Arun R Murthy Reviewed-by: Ankit Nautiyal Signed-off-by: Ankit Nautiyal Link: https://patchwork.freedesktop.org/patch/msgid/20240322031157.3823909-9-mitulkumar.ajitkumar.golani@intel.com --- diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 0fda90aa53c1b..ad04b94c52ee0 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -5385,6 +5385,8 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config, PIPE_CONF_CHECK_I(vrr.flipline); PIPE_CONF_CHECK_I(vrr.pipeline_full); PIPE_CONF_CHECK_I(vrr.guardband); + PIPE_CONF_CHECK_I(vrr.vsync_start); + PIPE_CONF_CHECK_I(vrr.vsync_end); } #undef PIPE_CONF_CHECK_X diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 0bde0de1955d3..0f4bd57107966 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1434,6 +1434,7 @@ struct intel_crtc_state { bool enable, in_range; u8 pipeline_full; u16 flipline, vmin, vmax, guardband; + u32 vsync_end, vsync_start; } vrr; /* Stream Splitter for eDP MSO */ diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index eb5bd07439020..856378f8b90eb 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -9,6 +9,7 @@ #include "intel_de.h" #include "intel_display_types.h" #include "intel_vrr.h" +#include "intel_dp.h" bool intel_vrr_is_capable(struct intel_connector *connector) { @@ -113,6 +114,7 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, struct drm_i915_private *i915 = to_i915(crtc->base.dev); struct intel_connector *connector = to_intel_connector(conn_state->connector); + struct intel_dp *intel_dp = intel_attached_dp(connector); struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; const struct drm_display_info *info = &connector->base.display_info; int vmin, vmax; @@ -165,6 +167,14 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state, if (crtc_state->uapi.vrr_enabled) { crtc_state->vrr.enable = true; crtc_state->mode_flags |= I915_MODE_FLAG_VRR; + if (intel_dp_as_sdp_supported(intel_dp)) { + crtc_state->vrr.vsync_start = + (crtc_state->hw.adjusted_mode.crtc_vtotal - + crtc_state->hw.adjusted_mode.vsync_start); + crtc_state->vrr.vsync_end = + (crtc_state->hw.adjusted_mode.crtc_vtotal - + crtc_state->hw.adjusted_mode.vsync_end); + } } } @@ -240,6 +250,12 @@ void intel_vrr_enable(const struct intel_crtc_state *crtc_state) return; intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), TRANS_PUSH_EN); + + if (HAS_AS_SDP(dev_priv)) + intel_de_write(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder), + VRR_VSYNC_END(crtc_state->vrr.vsync_end) | + VRR_VSYNC_START(crtc_state->vrr.vsync_start)); + intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), VRR_CTL_VRR_ENABLE | trans_vrr_ctl(crtc_state)); } @@ -258,13 +274,16 @@ void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state) intel_de_wait_for_clear(dev_priv, TRANS_VRR_STATUS(cpu_transcoder), VRR_STATUS_VRR_EN_LIVE, 1000); intel_de_write(dev_priv, TRANS_PUSH(cpu_transcoder), 0); + + if (HAS_AS_SDP(dev_priv)) + intel_de_write(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder), 0); } void intel_vrr_get_config(struct intel_crtc_state *crtc_state) { struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev); enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; - u32 trans_vrr_ctl; + u32 trans_vrr_ctl, trans_vrr_vsync; trans_vrr_ctl = intel_de_read(dev_priv, TRANS_VRR_CTL(cpu_transcoder)); @@ -284,6 +303,16 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state) crtc_state->vrr.vmin = intel_de_read(dev_priv, TRANS_VRR_VMIN(cpu_transcoder)) + 1; } - if (crtc_state->vrr.enable) + if (crtc_state->vrr.enable) { crtc_state->mode_flags |= I915_MODE_FLAG_VRR; + + if (HAS_AS_SDP(dev_priv)) { + trans_vrr_vsync = + intel_de_read(dev_priv, TRANS_VRR_VSYNC(cpu_transcoder)); + crtc_state->vrr.vsync_start = + REG_FIELD_GET(VRR_VSYNC_START_MASK, trans_vrr_vsync); + crtc_state->vrr.vsync_end = + REG_FIELD_GET(VRR_VSYNC_END_MASK, trans_vrr_vsync); + } + } } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b04bed2074e86..bf874ed0cb7f6 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2093,6 +2093,13 @@ #define TRANS_PUSH_EN REG_BIT(31) #define TRANS_PUSH_SEND REG_BIT(30) +#define _TRANS_VRR_VSYNC_A 0x60078 +#define TRANS_VRR_VSYNC(trans) _MMIO_TRANS2(trans, _TRANS_VRR_VSYNC_A) +#define VRR_VSYNC_END_MASK REG_GENMASK(28, 16) +#define VRR_VSYNC_END(vsync_end) REG_FIELD_PREP(VRR_VSYNC_END_MASK, (vsync_end)) +#define VRR_VSYNC_START_MASK REG_GENMASK(12, 0) +#define VRR_VSYNC_START(vsync_start) REG_FIELD_PREP(VRR_VSYNC_START_MASK, (vsync_start)) + /* VGA port control */ #define ADPA _MMIO(0x61100) #define PCH_ADPA _MMIO(0xe1100)