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]
--v3:
- Removing RFC tag.
--v4:
- Update place holder for CMRR register definition. (Jani)
--v5:
- Add CMRR register definitions to a separate file intel_vrr_reg.h.
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@xxxxxxxxx>
---
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 | 23 +++++++++++++++++++
drivers/gpu/drm/i915/intel_vrr_reg.h | 21 +++++++++++++++++
4 files changed, 72 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/i915/intel_vrr_reg.h
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 1e8e2fd52cf6..803360fcb0cc 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1004,6 +1004,13 @@ 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)
{
@@ -5054,6 +5061,16 @@ 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(&p, 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) { \
BUILD_BUG_ON_MSG(!__same_type(current_config->name, bool), \
@@ -5418,10 +5435,13 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_I(vrr.guardband);
PIPE_CONF_CHECK_I(vrr.vsync_start);
PIPE_CONF_CHECK_I(vrr.vsync_end);
+ 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_P
#undef PIPE_CONF_CHECK_FLAGS
@@ -6810,7 +6830,8 @@ 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 9678c2b157f6..ee0323422c7d 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1401,6 +1401,12 @@ struct intel_crtc_state {
u32 vsync_end, vsync_start;
} 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 5f3657aa8313..b96a8b2e7083 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_vrr_reg.h"
#include "intel_dp.h"
bool intel_vrr_is_capable(struct intel_connector *connector)
@@ -218,6 +219,19 @@ 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(dev_priv, cpu_transcoder),
+ VRR_CTL_CMRR_ENABLE | trans_vrr_ctl(crtc_state));
+ intel_de_write(dev_priv, TRANS_CMRR_M_HI(dev_priv, cpu_transcoder),
+ upper_32_bits(crtc_state->cmrr.cmrr_m));
+ intel_de_write(dev_priv, TRANS_CMRR_M_LO(dev_priv, cpu_transcoder),
+ lower_32_bits(crtc_state->cmrr.cmrr_m));
+ intel_de_write(dev_priv, TRANS_CMRR_N_HI(dev_priv, cpu_transcoder),
+ upper_32_bits(crtc_state->cmrr.cmrr_n));
+ intel_de_write(dev_priv, TRANS_CMRR_N_LO(dev_priv, cpu_transcoder),
+ lower_32_bits(crtc_state->cmrr.cmrr_n));
+ }
+
intel_de_write(dev_priv, TRANS_VRR_VMIN(dev_priv, cpu_transcoder),
crtc_state->vrr.vmin - 1);
intel_de_write(dev_priv, TRANS_VRR_VMAX(dev_priv, cpu_transcoder),
@@ -306,6 +320,15 @@ 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(dev_priv, cpu_transcoder),
+ TRANS_CMRR_N_HI(dev_priv, cpu_transcoder));
+ crtc_state->cmrr.cmrr_m =
+ intel_de_read64_2x32(dev_priv, TRANS_CMRR_M_LO(dev_priv, cpu_transcoder),
+ TRANS_CMRR_M_HI(dev_priv, 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/intel_vrr_reg.h b/drivers/gpu/drm/i915/intel_vrr_reg.h
new file mode 100644
index 000000000000..e1273b4e1b9b
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_vrr_reg.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2024 Intel Corporation
+ */
+
+#ifndef __INTEL_VRR_REG_H__
+#define __INTEL_VRR_REG_H__
+
+#define VRR_CTL_CMRR_ENABLE REG_BIT(27)
+
+#define _TRANS_CMRR_M_LO_A 0x604F0
+#define _TRANS_CMRR_M_HI_A 0x604F4
+#define _TRANS_CMRR_N_LO_A 0x604F8
+#define _TRANS_CMRR_N_HI_A 0x604FC
+#define TRANS_CMRR_M_LO(dev_priv, trans) _MMIO_TRANS2(dev_priv, trans, _TRANS_CMRR_M_LO_A)
+#define TRANS_CMRR_M_HI(dev_priv, trans) _MMIO_TRANS2(dev_priv, trans, _TRANS_CMRR_M_HI_A)
+#define TRANS_CMRR_N_LO(dev_priv, trans) _MMIO_TRANS2(dev_priv, trans, _TRANS_CMRR_N_LO_A)
+#define TRANS_CMRR_N_HI(dev_priv, trans) _MMIO_TRANS2(dev_priv, trans, _TRANS_CMRR_N_HI_A)
+
+#endif /* __INTEL_VRR_REGS__ */
+
--
2.25.1
