drm/i915/xelpd: Add VRR guardband for VRR CTL

On XE_LPD, VRR CTL register adds a new VRR Guardband bitfield
replacing the pipeline full and deprecating the pipeline override
bit.

This patch adds this corresponding bitfield in the register defs,
crtc state vrr structure and populates this in vrr compute
config and vrr enable functions. It also adds the corresponding
HW state readout for this field.

Bspec: 50508
Cc: Aditya Swarup <aditya.swarup@intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Aditya Swarup <aditya.swarup@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210526000656.3060314-3-matthew.d.roper@intel.com
This commit is contained in:
Manasi Navare 2021-05-25 17:06:55 -07:00 коммит произвёл Matt Roper
Родитель 8bcc0840cf
Коммит bb265dbdf3
5 изменённых файлов: 53 добавлений и 20 удалений

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@ -7654,10 +7654,11 @@ static void intel_dump_pipe_config(const struct intel_crtc_state *pipe_config,
intel_hdmi_infoframe_enable(DP_SDP_VSC))
intel_dump_dp_vsc_sdp(dev_priv, &pipe_config->infoframes.vsc);
drm_dbg_kms(&dev_priv->drm, "vrr: %s, vmin: %d, vmax: %d, pipeline full: %d, flipline: %d, vmin vblank: %d, vmax vblank: %d\n",
drm_dbg_kms(&dev_priv->drm, "vrr: %s, vmin: %d, vmax: %d, pipeline full: %d, guardband: %d flipline: %d, vmin vblank: %d, vmax vblank: %d\n",
yesno(pipe_config->vrr.enable),
pipe_config->vrr.vmin, pipe_config->vrr.vmax,
pipe_config->vrr.pipeline_full, pipe_config->vrr.flipline,
pipe_config->vrr.pipeline_full, pipe_config->vrr.guardband,
pipe_config->vrr.flipline,
intel_vrr_vmin_vblank_start(pipe_config),
intel_vrr_vmax_vblank_start(pipe_config));
@ -8663,6 +8664,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_I(vrr.vmax);
PIPE_CONF_CHECK_I(vrr.flipline);
PIPE_CONF_CHECK_I(vrr.pipeline_full);
PIPE_CONF_CHECK_I(vrr.guardband);
PIPE_CONF_CHECK_BOOL(has_psr);
PIPE_CONF_CHECK_BOOL(has_psr2);
@ -12256,6 +12258,8 @@ int intel_modeset_init_noirq(struct drm_i915_private *i915)
i915->framestart_delay = 1; /* 1-4 */
i915->window2_delay = 0; /* No DSB so no window2 delay */
intel_mode_config_init(i915);
ret = intel_cdclk_init(i915);

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@ -1202,7 +1202,7 @@ struct intel_crtc_state {
struct {
bool enable;
u8 pipeline_full;
u16 flipline, vmin, vmax;
u16 flipline, vmin, vmax, guardband;
} vrr;
/* Stream Splitter for eDP MSO */

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@ -68,6 +68,9 @@ static int intel_vrr_vblank_exit_length(const struct intel_crtc_state *crtc_stat
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
/* The hw imposes the extra scanline before frame start */
if (DISPLAY_VER(i915) >= 13)
return crtc_state->vrr.guardband + i915->framestart_delay + 1;
else
return crtc_state->vrr.pipeline_full + i915->framestart_delay + 1;
}
@ -86,6 +89,8 @@ void
intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
struct intel_connector *connector =
to_intel_connector(conn_state->connector);
struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode;
@ -123,6 +128,15 @@ intel_vrr_compute_config(struct intel_crtc_state *crtc_state,
crtc_state->vrr.flipline = crtc_state->vrr.vmin + 1;
/*
* For XE_LPD+, we use guardband and pipeline override
* is deprecated.
*/
if (DISPLAY_VER(i915) >= 13)
crtc_state->vrr.guardband =
crtc_state->vrr.vmin - adjusted_mode->crtc_vdisplay -
i915->window2_delay;
else
/*
* FIXME: s/4/framestart_delay+1/ to get consistent
* earliest/latest points for register latching regardless
@ -149,6 +163,11 @@ void intel_vrr_enable(struct intel_encoder *encoder,
if (!crtc_state->vrr.enable)
return;
if (DISPLAY_VER(dev_priv) >= 13)
trans_vrr_ctl = VRR_CTL_VRR_ENABLE |
VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |
XELPD_VRR_CTL_VRR_GUARDBAND(crtc_state->vrr.guardband);
else
trans_vrr_ctl = VRR_CTL_VRR_ENABLE |
VRR_CTL_IGN_MAX_SHIFT | VRR_CTL_FLIP_LINE_EN |
VRR_CTL_PIPELINE_FULL(crtc_state->vrr.pipeline_full) |
@ -199,8 +218,13 @@ void intel_vrr_get_config(struct intel_crtc *crtc,
if (!crtc_state->vrr.enable)
return;
if (DISPLAY_VER(dev_priv) >= 13)
crtc_state->vrr.guardband =
REG_FIELD_GET(XELPD_VRR_CTL_VRR_GUARDBAND_MASK, trans_vrr_ctl);
else
if (trans_vrr_ctl & VRR_CTL_PIPELINE_FULL_OVERRIDE)
crtc_state->vrr.pipeline_full = REG_FIELD_GET(VRR_CTL_PIPELINE_FULL_MASK, trans_vrr_ctl);
crtc_state->vrr.pipeline_full =
REG_FIELD_GET(VRR_CTL_PIPELINE_FULL_MASK, trans_vrr_ctl);
if (trans_vrr_ctl & VRR_CTL_FLIP_LINE_EN)
crtc_state->vrr.flipline = intel_de_read(dev_priv, TRANS_VRR_FLIPLINE(cpu_transcoder)) + 1;
crtc_state->vrr.vmax = intel_de_read(dev_priv, TRANS_VRR_VMAX(cpu_transcoder)) + 1;

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@ -1133,6 +1133,9 @@ struct drm_i915_private {
u8 framestart_delay;
/* Window2 specifies time required to program DSB (Window2) in number of scan lines */
u8 window2_delay;
u8 pch_ssc_use;
/* For i915gm/i945gm vblank irq workaround */

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@ -4379,6 +4379,8 @@ enum {
#define VRR_CTL_PIPELINE_FULL_MASK REG_GENMASK(10, 3)
#define VRR_CTL_PIPELINE_FULL(x) REG_FIELD_PREP(VRR_CTL_PIPELINE_FULL_MASK, (x))
#define VRR_CTL_PIPELINE_FULL_OVERRIDE REG_BIT(0)
#define XELPD_VRR_CTL_VRR_GUARDBAND_MASK REG_GENMASK(15, 0)
#define XELPD_VRR_CTL_VRR_GUARDBAND(x) REG_FIELD_PREP(XELPD_VRR_CTL_VRR_GUARDBAND_MASK, (x))
#define _TRANS_VRR_VMAX_A 0x60424
#define _TRANS_VRR_VMAX_B 0x61424