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drm/i915/vdsc: Introduce 3rd VDSC engine VDSC2

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Introduce the register bits to enable the 3rd DSC engine VDSC2.
Add support to read/write these bits.

v2: Only introduce bits that are used and update the subject and commit
message. (Suraj)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241030041036.1238006-5-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal
2024-10-30 09:40:33 +05:30
parent d457918cf7
commit 3013e2e409
2 changed files with 11 additions and 1 deletions
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10
drivers/gpu/drm/i915/display/intel_vdsc.c
View File

@@ -775,6 +775,12 @@ void intel_dsc_enable(const struct intel_crtc_state *crtc_state)
dss_ctl2_val |= VDSC1_ENABLE;
dss_ctl1_val |= JOINER_ENABLE;
}
if (vdsc_instances_per_pipe > 2) {
dss_ctl2_val |= VDSC2_ENABLE;
dss_ctl2_val |= SMALL_JOINER_CONFIG_3_ENGINES;
}
if (crtc_state->joiner_pipes) {
if (intel_crtc_ultrajoiner_enable_needed(crtc_state))
dss_ctl1_val |= ULTRA_JOINER_ENABLE;
@@ -976,7 +982,9 @@ void intel_dsc_get_config(struct intel_crtc_state *crtc_state)
if (!crtc_state->dsc.compression_enable)
goto out;
if (dss_ctl1 & JOINER_ENABLE && dss_ctl2 & VDSC1_ENABLE)
if (dss_ctl1 & JOINER_ENABLE && dss_ctl2 & (VDSC2_ENABLE | SMALL_JOINER_CONFIG_3_ENGINES))
crtc_state->dsc.num_streams = 3;
else if (dss_ctl1 & JOINER_ENABLE && dss_ctl2 & VDSC1_ENABLE)
crtc_state->dsc.num_streams = 2;
else
crtc_state->dsc.num_streams = 1;

2
drivers/gpu/drm/i915/display/intel_vdsc_regs.h
View File

@@ -22,6 +22,8 @@
#define DSS_CTL2 _MMIO(0x67404)
#define VDSC0_ENABLE REG_BIT(31)
#define VDSC2_ENABLE REG_BIT(30)
#define SMALL_JOINER_CONFIG_3_ENGINES REG_BIT(23)
#define VDSC1_ENABLE REG_BIT(15)
#define RIGHT_DL_BUF_TARGET_DEPTH_MASK (0xfff << 0)
#define RIGHT_DL_BUF_TARGET_DEPTH(pixels) ((pixels) << 0)