From: Vandita Kulkarni <vandita.kulka...@intel.com>
>From the max_frl_rate field of vbt parse the maxfrl_rate.
Signed-off-by: Vandita Kulkarni <vandita.kulka...@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
---
drivers/gpu/drm/i915/display/intel_bios.c | 51 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_bios.h | 1 +
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 7 +++
3 files changed, 59 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c
b/drivers/gpu/drm/i915/display/intel_bios.c
index c2987f2c2b2e..14008fc4c9bf 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2621,6 +2621,42 @@ static bool is_port_valid(struct drm_i915_private *i915,
enum port port)
return true;
}
+static int _intel_bios_hdmi_max_frl_rate(const struct intel_bios_encoder_data
*devdata)
+{
+ struct drm_i915_private *i915 = devdata->i915;
+
+ if (i915->display.vbt.version >= 237 &&
+ devdata->child.hdmi_max_frl_rate_valid) {
+ switch (devdata->child.hdmi_max_frl_rate) {
+ default:
+ case HDMI_MAX_FRL_RATE_PLATFORM:
+ drm_dbg_kms(&i915->drm, "HDMI2.1 is limited to support
only TMDS modes\n");
+ return 0;
+ case HDMI_MAX_FRL_RATE_3G:
+ return 3000000;
+ case HDMI_MAX_FRL_RATE_6G:
+ return 6000000;
+ case HDMI_MAX_FRL_RATE_8G:
+ return 8000000;
+ case HDMI_MAX_FRL_RATE_10G:
+ return 10000000;
+ case HDMI_MAX_FRL_RATE_12G:
+ return 12000000;
+ }
+ }
+
+ /*
+ * When hdmi_max_frl_rate_valid is 0
+ * Don't consider the hdmi_max_frl_rate for
+ * limiting the FrlRates on HDMI2.1 displays
+ */
+ if (i915->display.vbt.version >= 237 &&
+ IS_METEORLAKE(i915))
+ return 12000000;
+
+ return 0;
+}
+
static void print_ddi_port(const struct intel_bios_encoder_data *devdata,
enum port port)
{
@@ -2628,6 +2664,7 @@ static void print_ddi_port(const struct
intel_bios_encoder_data *devdata,
const struct child_device_config *child = &devdata->child;
bool is_dvi, is_hdmi, is_dp, is_edp, is_crt, supports_typec_usb,
supports_tbt;
int dp_boost_level, dp_max_link_rate, hdmi_boost_level,
hdmi_level_shift, max_tmds_clock;
+ int hdmi_max_frl_rate;
is_dvi = intel_bios_encoder_supports_dvi(devdata);
is_dp = intel_bios_encoder_supports_dp(devdata);
@@ -2677,6 +2714,12 @@ static void print_ddi_port(const struct
intel_bios_encoder_data *devdata,
"Port %c VBT DP max link rate: %d\n",
port_name(port), dp_max_link_rate);
+ hdmi_max_frl_rate = _intel_bios_hdmi_max_frl_rate(devdata);
+ if (hdmi_max_frl_rate)
+ drm_dbg_kms(&i915->drm,
+ "VBT HDMI max frl rate for port %c: %d\n",
+ port_name(port), hdmi_max_frl_rate);
+
/*
* FIXME need to implement support for VBT
* vswing/preemph tables should this ever trigger.
@@ -3679,6 +3722,14 @@ int intel_bios_max_tmds_clock(struct intel_encoder
*encoder)
return _intel_bios_max_tmds_clock(devdata);
}
+int intel_bios_hdmi_max_frl_rate(struct intel_encoder *encoder)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ const struct intel_bios_encoder_data *devdata =
i915->display.vbt.ports[encoder->port];
+
+ return _intel_bios_hdmi_max_frl_rate(devdata);
+}
+
/* This is an index in the HDMI/DVI DDI buffer translation table, or -1 */
int intel_bios_hdmi_level_shift(struct intel_encoder *encoder)
{
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h
b/drivers/gpu/drm/i915/display/intel_bios.h
index e375405a7828..e3a8e8198881 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -273,5 +273,6 @@ bool intel_bios_encoder_supports_typec_usb(const struct
intel_bios_encoder_data
bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data
*devdata);
int intel_bios_encoder_dp_boost_level(const struct intel_bios_encoder_data
*devdata);
int intel_bios_encoder_hdmi_boost_level(const struct intel_bios_encoder_data
*devdata);
+int intel_bios_hdmi_max_frl_rate(struct intel_encoder *encoder);
#endif /* _INTEL_BIOS_H_ */
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index a9f44abfc9fc..f7ecb82b0b3f 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -320,6 +320,13 @@ struct bdb_general_features {
#define HDMI_MAX_DATA_RATE_340 4 /* 249+ */
#define HDMI_MAX_DATA_RATE_300 5 /* 249+ */
+#define HDMI_MAX_FRL_RATE_PLATFORM 0 /* 237 */
+#define HDMI_MAX_FRL_RATE_3G 1 /* 237 */
+#define HDMI_MAX_FRL_RATE_6G 2 /* 237 */
+#define HDMI_MAX_FRL_RATE_8G 3 /* 237 */
+#define HDMI_MAX_FRL_RATE_10G 4 /* 237 */
+#define HDMI_MAX_FRL_RATE_12G 5 /* 237 */
+
#define LEGACY_CHILD_DEVICE_CONFIG_SIZE 33
/* DDC Bus DDI Type 155+ */
--
2.25.1
