diff options
| author | Anusha Srivatsa <anusha.srivatsa@intel.com> | 2021-05-19 03:06:24 +0300 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2021-05-20 09:59:34 +0300 |
| commit | e2ca757b6fa415e1aed7bffa240dda918d2301a4 (patch) | |
| tree | 0bca0463f0e110130f0ee1ec64a47452229e8bd3 /drivers/gpu | |
| parent | 414002f1bb8e5a7824ed43373d8de9ba7c658301 (diff) | |
| download | linux-e2ca757b6fa415e1aed7bffa240dda918d2301a4.tar.xz | |
drm/i915/adlp: Add PIPE_MISC2 programming
When scalers are enabled, we need to program underrun
bubble counter to 0x50 to avoid Soft Pipe A underruns.
Make sure other bits dont get overwritten.
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Clinton Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210519000625.3184321-17-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 7 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 58be548e0fb9..2bf713b68a07 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -5716,8 +5716,12 @@ static void hsw_set_pipeconf(const struct intel_crtc_state *crtc_state) static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state) { struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + const struct intel_crtc_scaler_state *scaler_state = + &crtc_state->scaler_state; + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); u32 val = 0; + int i; switch (crtc_state->pipe_bpp) { case 18: @@ -5756,6 +5760,23 @@ static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state) if (DISPLAY_VER(dev_priv) >= 12) val |= PIPEMISC_PIXEL_ROUNDING_TRUNC; + if (IS_ALDERLAKE_P(dev_priv)) { + bool scaler_in_use = false; + + for (i = 0; i < crtc->num_scalers; i++) { + if (!scaler_state->scalers[i].in_use) + continue; + + scaler_in_use = true; + break; + } + + intel_de_rmw(dev_priv, PIPE_MISC2(crtc->pipe), + PIPE_MISC2_UNDERRUN_BUBBLE_COUNTER_MASK, + scaler_in_use ? PIPE_MISC2_BUBBLE_COUNTER_SCALER_EN : + PIPE_MISC2_BUBBLE_COUNTER_SCALER_DIS); + } + intel_de_write(dev_priv, PIPEMISC(crtc->pipe), val); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index dcdc5b10ce40..d4debb3ec485 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6155,6 +6155,13 @@ enum { #define PIPEMISC_DITHER_TYPE_SP (0 << 2) #define PIPEMISC(pipe) _MMIO_PIPE2(pipe, _PIPE_MISC_A) +#define _PIPE_MISC2_A 0x7002C +#define _PIPE_MISC2_B 0x7102C +#define PIPE_MISC2_BUBBLE_COUNTER_SCALER_EN (0x50 << 24) +#define PIPE_MISC2_BUBBLE_COUNTER_SCALER_DIS (0x14 << 24) +#define PIPE_MISC2_UNDERRUN_BUBBLE_COUNTER_MASK (0xff << 24) +#define PIPE_MISC2(pipe) _MMIO_PIPE2(pipe, _PIPE_MISC2_A) + /* Skylake+ pipe bottom (background) color */ #define _SKL_BOTTOM_COLOR_A 0x70034 #define SKL_BOTTOM_COLOR_GAMMA_ENABLE (1 << 31) |