From: Shobhit Kumar <shobhit.ku...@intel.com>

Parse and store useful information in i915_dev_private

v2: Add to new vbt struct and call them psr_*
v3: Fix comment and variable name

Signed-off-by: Shobhit Kumar <shobhit.ku...@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.v...@gmail.com>
---
 drivers/gpu/drm/i915/i915_drv.h   |  7 +++++++
 drivers/gpu/drm/i915/intel_bios.c | 30 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_bios.h | 20 +++++++++++++++++++-
 3 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 87f7f88..dd459a5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -951,6 +951,13 @@ struct intel_vbt_data {
        int edp_bpp;
        struct edp_power_seq edp_pps;
 
+       /* eDP PSR*/
+       u8 psr_full_link_state;
+       u8 psr_wait_lines;
+       u8 psr_idle_frames;
+       u16 psr_wakeup_tp1;
+       u16 psr_wakeup_tp2_tp3;
+
        int crt_ddc_pin;
 
        int child_dev_num;
diff --git a/drivers/gpu/drm/i915/intel_bios.c 
b/drivers/gpu/drm/i915/intel_bios.c
index 53f2bed..99c6788 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -383,6 +383,35 @@ parse_general_definitions(struct drm_i915_private 
*dev_priv,
        }
 }
 
+
+static void
+parse_edp_psr(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
+{
+       struct bdb_psr_features *psr;
+       struct bdb_lvds_options *lvds_opts;
+       int index = 0;
+       lvds_opts = find_section(bdb, BDB_LVDS_OPTIONS);
+       if (!lvds_opts) {
+               DRM_DEBUG_KMS("No LVDS Options block found.\n");
+               return;
+       }
+
+       index = lvds_opts->panel_type;
+
+       psr = find_section(bdb, BDB_PSR_FEATURES);
+       if (!psr) {
+               DRM_DEBUG_KMS("No PSR feature block found.\n");
+               return;
+       }
+
+       dev_priv->vbt.psr_full_link_state = psr[index].link_disable;
+       dev_priv->vbt.psr_wait_lines = psr[index].wait_lines;
+       dev_priv->vbt.psr_idle_frames = psr[index].idle_frames;
+       dev_priv->vbt.psr_wakeup_tp1 = psr[index].wakeup_tp1;
+       dev_priv->vbt.psr_wakeup_tp2_tp3 = psr[index].wakeup_tp2_tp3;
+}
+
+
 static void
 parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
                          struct bdb_header *bdb)
@@ -745,6 +774,7 @@ intel_parse_bios(struct drm_device *dev)
        parse_device_mapping(dev_priv, bdb);
        parse_driver_features(dev_priv, bdb);
        parse_edp(dev_priv, bdb);
+       parse_edp_psr(dev_priv, bdb);
 
        if (bios)
                pci_unmap_rom(pdev, bios);
diff --git a/drivers/gpu/drm/i915/intel_bios.h 
b/drivers/gpu/drm/i915/intel_bios.h
index e088d6f..c883b87 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -80,7 +80,7 @@ struct vbios_data {
 #define BDB_EXT_MMIO_REGS        6
 #define BDB_SWF_IO               7
 #define BDB_SWF_MMIO             8
-#define BDB_DOT_CLOCK_TABLE      9
+#define BDB_PSR_FEATURES         9
 #define BDB_MODE_REMOVAL_TABLE  10
 #define BDB_CHILD_DEVICE_TABLE  11
 #define BDB_DRIVER_FEATURES     12
@@ -265,6 +265,24 @@ struct bdb_lvds_options {
        u8 rsvd4;
 } __attribute__((packed));
 
+struct bdb_psr_features {
+       /* Feature bits */
+       u8 link_disable:1;
+       u8 require_aux:1;
+       u8 rsvd1:6;
+
+       /* Wait times */
+       u8 idle_frames:4;
+       u8 wait_lines:3;
+       u8 rsvd2:1;
+
+       /* TP1 wakeup time */
+       u16 wakeup_tp1;
+
+       /* TP2 TP3 wakeup time */
+       u16 wakeup_tp2_tp3;
+} __attribute__((packed));
+
 /* LFP pointer table contains entries to the struct below */
 struct bdb_lvds_lfp_data_ptr {
        u16 fp_timing_offset; /* offsets are from start of bdb */
-- 
1.7.11.7

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