From: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v2 02/13] drm/edid: Parse MAX_FRL field from HFVSDB block
Date: Sun, 1 Nov 2020 15:36:46 +0530 [thread overview]
Message-ID: <20201101100657.12087-3-ankit.k.nautiyal@intel.com> (raw)
In-Reply-To: <20201101100657.12087-1-ankit.k.nautiyal@intel.com>
From: Swati Sharma <swati2.sharma@intel.com>
This patch parses MAX_FRL field to get the MAX rate in Gbps that
the HDMI 2.1 panel can support in FRL mode. Source need this
field to determine the optimal rate between the source and sink
during FRL training.
v2: Fixed minor bugs, and removed extra wrapper function (Uma Shankar)
Signed-off-by: Sharma, Swati2 <swati2.sharma@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
drivers/gpu/drm/drm_edid.c | 44 +++++++++++++++++++++++++++++++++++++
include/drm/drm_connector.h | 6 +++++
2 files changed, 50 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 631125b46e04..26797868ea5b 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4849,6 +4849,41 @@ static void drm_parse_vcdb(struct drm_connector *connector, const u8 *db)
info->rgb_quant_range_selectable = true;
}
+static
+void drm_get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane)
+{
+ switch (max_frl_rate) {
+ case 1:
+ *max_lanes = 3;
+ *max_rate_per_lane = 3;
+ break;
+ case 2:
+ *max_lanes = 3;
+ *max_rate_per_lane = 6;
+ break;
+ case 3:
+ *max_lanes = 4;
+ *max_rate_per_lane = 6;
+ break;
+ case 4:
+ *max_lanes = 4;
+ *max_rate_per_lane = 8;
+ break;
+ case 5:
+ *max_lanes = 4;
+ *max_rate_per_lane = 10;
+ break;
+ case 6:
+ *max_lanes = 4;
+ *max_rate_per_lane = 12;
+ break;
+ case 0:
+ default:
+ *max_lanes = 0;
+ *max_rate_per_lane = 0;
+ }
+}
+
static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector,
const u8 *db)
{
@@ -4902,6 +4937,15 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector,
}
}
+ if (hf_vsdb[7]) {
+ u8 max_frl_rate;
+
+ DRM_DEBUG_KMS("hdmi_21 sink detected. parsing edid\n");
+ max_frl_rate = (hf_vsdb[7] & DRM_EDID_MAX_FRL_RATE_MASK) >> 4;
+ drm_get_max_frl_rate(max_frl_rate, &hdmi->max_lanes,
+ &hdmi->max_frl_rate_per_lane);
+ }
+
drm_parse_ycbcr420_deep_color_info(connector, hf_vsdb);
}
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 928136556174..f351bf10c076 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -207,6 +207,12 @@ struct drm_hdmi_info {
/** @y420_dc_modes: bitmap of deep color support index */
u8 y420_dc_modes;
+
+ /** @max_frl_rate_per_lane: support fixed rate link */
+ u8 max_frl_rate_per_lane;
+
+ /** @max_lanes: supported by sink */
+ u8 max_lanes;
};
/**
--
2.17.1
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next prev parent reply other threads:[~2020-11-01 10:13 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-01 10:06 [Intel-gfx] [PATCH v2 00/13] Add support for DP-HDMI2.1 PCON Ankit Nautiyal
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 01/13] drm/edid: Add additional HFVSDB fields for HDMI2.1 Ankit Nautiyal
2020-11-19 6:12 ` Shankar, Uma
2020-11-01 10:06 ` Ankit Nautiyal [this message]
2020-11-19 6:13 ` [Intel-gfx] [PATCH v2 02/13] drm/edid: Parse MAX_FRL field from HFVSDB block Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 03/13] drm/edid: Parse DSC1.2 cap fields " Ankit Nautiyal
2020-11-19 6:27 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 04/13] drm/dp_helper: Add Helpers for FRL Link Training support for DP-HDMI2.1 PCON Ankit Nautiyal
2020-11-19 7:47 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 05/13] drm/dp_helper: Add support for link failure detection Ankit Nautiyal
2020-11-19 7:52 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 06/13] drm/dp_helper: Add support for Configuring DSC for HDMI2.1 Pcon Ankit Nautiyal
2020-11-19 8:00 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 07/13] drm/i915: Capture max frl rate for PCON in dfp cap structure Ankit Nautiyal
2020-11-19 10:07 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 08/13] drm/i915: Add support for starting FRL training for HDMI2.1 via PCON Ankit Nautiyal
2020-11-19 10:23 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 09/13] drm/i915: Check for FRL training before DP Link training Ankit Nautiyal
2020-11-19 11:19 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 10/13] drm/i915: Add support for enabling link status and recovery Ankit Nautiyal
2020-11-19 11:22 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 11/13] drm/i915: Read DSC capabilities of the HDMI2.1 PCON encoder Ankit Nautiyal
2020-11-19 11:29 ` Shankar, Uma
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 12/13] drm/i915: Add helper functions for calculating DSC parameters for HDMI2.1 Ankit Nautiyal
2020-11-25 20:28 ` Shankar, Uma
2020-12-02 14:13 ` Nautiyal, Ankit K
2020-11-01 10:06 ` [Intel-gfx] [PATCH v2 13/13] drm/i915: Configure PCON for DSC1.1 to DSC1.2 encoding Ankit Nautiyal
2020-11-25 20:45 ` Shankar, Uma
2020-12-02 14:19 ` Nautiyal, Ankit K
2020-11-01 10:38 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for Add support for DP-HDMI2.1 PCON (rev4) Patchwork
2020-11-01 10:40 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-11-01 11:04 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-11-01 12:43 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
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