[Intel-gfx] [RFC 1/3] drm/i915: Define and compute Transcoder CMRR registers
Mitul Golani
mitulkumar.ajitkumar.golani at intel.com
Wed Nov 15 15:49:41 UTC 2023
Add register definitions for Transcoder Fixed Average
Vtotal mode/CMRR function, with the necessary bitfields.
Compute these registers when CMRR is enabled, extending
Adaptive refresh rate capabilities.
--v2:
- Use intel_de_read64_2x32 in intel_vrr_get_config. [Jani]
- Fix indent and order based on register offset. [Jani]
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 23 ++++++++++++++++++-
.../drm/i915/display/intel_display_types.h | 6 +++++
drivers/gpu/drm/i915/display/intel_vrr.c | 22 ++++++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 10 ++++++++
4 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 125903007a29..f99d2de840bc 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -921,6 +921,13 @@ static bool vrr_params_changed(const struct intel_crtc_state *old_crtc_state,
old_crtc_state->vrr.pipeline_full != new_crtc_state->vrr.pipeline_full;
}
+static bool cmrr_params_changed(const struct intel_crtc_state *old_crtc_state,
+ const struct intel_crtc_state *new_crtc_state)
+{
+ return old_crtc_state->cmrr.cmrr_m != new_crtc_state->cmrr.cmrr_m ||
+ old_crtc_state->cmrr.cmrr_n != new_crtc_state->cmrr.cmrr_n;
+}
+
static bool vrr_enabling(const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
@@ -5067,6 +5074,16 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
} \
} while (0)
+#define PIPE_CONF_CHECK_LLI(name) do { \
+ if (current_config->name != pipe_config->name) { \
+ pipe_config_mismatch(fastset, crtc, __stringify(name), \
+ "(expected %lli, found %lli)", \
+ current_config->name, \
+ pipe_config->name); \
+ ret = false; \
+ } \
+} while (0)
+
#define PIPE_CONF_CHECK_BOOL(name) do { \
if (current_config->name != pipe_config->name) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
@@ -5447,10 +5464,13 @@ 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_LLI(cmrr.cmrr_m);
+ PIPE_CONF_CHECK_LLI(cmrr.cmrr_n);
}
#undef PIPE_CONF_CHECK_X
#undef PIPE_CONF_CHECK_I
+#undef PIPE_CONF_CHECK_LLI
#undef PIPE_CONF_CHECK_BOOL
#undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
#undef PIPE_CONF_CHECK_P
@@ -6790,7 +6810,8 @@ static void intel_pre_update_crtc(struct intel_atomic_state *state,
intel_crtc_needs_fastset(new_crtc_state))
icl_set_pipe_chicken(new_crtc_state);
- if (vrr_params_changed(old_crtc_state, new_crtc_state))
+ if (vrr_params_changed(old_crtc_state, new_crtc_state) ||
+ cmrr_params_changed(old_crtc_state, new_crtc_state))
intel_vrr_set_transcoder_timings(new_crtc_state);
}
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 9a44350ba05d..e42a0807227b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1406,6 +1406,12 @@ struct intel_crtc_state {
u16 flipline, vmin, vmax, guardband;
} vrr;
+ /* Content Match Refresh Rate state */
+ struct {
+ bool enable;
+ u64 cmrr_n, cmrr_m;
+ } cmrr;
+
/* Stream Splitter for eDP MSO */
struct {
bool enable;
diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index 5d905f932cb4..c889b0aa69a4 100644
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -199,6 +199,19 @@ void intel_vrr_set_transcoder_timings(const struct intel_crtc_state *crtc_state)
return;
}
+ if (crtc_state->cmrr.enable) {
+ intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder),
+ VRR_CTL_CMRR_ENABLE | trans_vrr_ctl(crtc_state));
+ intel_de_write(dev_priv, TRANS_CMRR_M_HI(cpu_transcoder),
+ upper_32_bits(crtc_state->cmrr.cmrr_m));
+ intel_de_write(dev_priv, TRANS_CMRR_M_LO(cpu_transcoder),
+ lower_32_bits(crtc_state->cmrr.cmrr_m));
+ intel_de_write(dev_priv, TRANS_CMRR_N_HI(cpu_transcoder),
+ upper_32_bits(crtc_state->cmrr.cmrr_n));
+ intel_de_write(dev_priv, TRANS_CMRR_N_LO(cpu_transcoder),
+ lower_32_bits(crtc_state->cmrr.cmrr_n));
+ }
+
intel_de_write(dev_priv, TRANS_VRR_VMIN(cpu_transcoder), crtc_state->vrr.vmin - 1);
intel_de_write(dev_priv, TRANS_VRR_VMAX(cpu_transcoder), crtc_state->vrr.vmax - 1);
intel_de_write(dev_priv, TRANS_VRR_CTL(cpu_transcoder), trans_vrr_ctl(crtc_state));
@@ -269,6 +282,15 @@ void intel_vrr_get_config(struct intel_crtc_state *crtc_state)
crtc_state->vrr.enable = trans_vrr_ctl & VRR_CTL_VRR_ENABLE;
+ if (crtc_state->cmrr.enable) {
+ crtc_state->cmrr.cmrr_n =
+ intel_de_read64_2x32(dev_priv, TRANS_CMRR_N_LO(cpu_transcoder),
+ TRANS_CMRR_N_HI(cpu_transcoder));
+ crtc_state->cmrr.cmrr_m =
+ intel_de_read64_2x32(dev_priv, TRANS_CMRR_M_LO(cpu_transcoder),
+ TRANS_CMRR_M_HI(cpu_transcoder));
+ }
+
if (DISPLAY_VER(dev_priv) >= 13)
crtc_state->vrr.guardband =
REG_FIELD_GET(XELPD_VRR_CTL_VRR_GUARDBAND_MASK, trans_vrr_ctl);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 135e8d8dbdf0..2254fd12a8c0 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2013,6 +2013,7 @@
#define VRR_CTL_VRR_ENABLE REG_BIT(31)
#define VRR_CTL_IGN_MAX_SHIFT REG_BIT(30)
#define VRR_CTL_FLIP_LINE_EN REG_BIT(29)
+#define VRR_CTL_CMRR_ENABLE REG_BIT(27)
#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)
@@ -2089,6 +2090,15 @@
#define TRANS_VRR_STATUS2(trans) _MMIO_TRANS2(trans, _TRANS_VRR_STATUS2_A)
#define VRR_STATUS2_VERT_LN_CNT_MASK REG_GENMASK(19, 0)
+#define _TRANS_CMRR_M_LO_A 0x604F0
+#define TRANS_CMRR_M_LO(trans) _MMIO_TRANS2(trans, _TRANS_CMRR_M_LO_A)
+#define _TRANS_CMRR_M_HI_A 0x604F4
+#define TRANS_CMRR_M_HI(trans) _MMIO_TRANS2(trans, _TRANS_CMRR_M_HI_A)
+#define _TRANS_CMRR_N_LO_A 0x604F8
+#define TRANS_CMRR_N_LO(trans) _MMIO_TRANS2(trans, _TRANS_CMRR_N_LO_A)
+#define _TRANS_CMRR_N_HI_A 0x604FC
+#define TRANS_CMRR_N_HI(trans) _MMIO_TRANS2(trans, _TRANS_CMRR_N_HI_A)
+
#define _TRANS_PUSH_A 0x60A70
#define _TRANS_PUSH_B 0x61A70
#define _TRANS_PUSH_C 0x62A70
--
2.25.1
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