Each LFP may have different panel type which is stored in LFP data
data block. Based on the child device index respective panel-type/
panel-type2 field will be used.

v1: Initial rfc verion.
v2: Based on review comments from Jani,
- Used panel-type instead addition panel-index variable.
- DEVICE_HANDLE_* name changed and placed before DEVICE_TYPE_*
macro.

Signed-off-by: Animesh Manna <animesh.ma...@intel.com>
---
 drivers/gpu/drm/i915/display/icl_dsi.c        |  2 +-
 drivers/gpu/drm/i915/display/intel_bios.c     | 40 +++++++++++++------
 drivers/gpu/drm/i915/display/intel_bios.h     |  3 +-
 drivers/gpu/drm/i915/display/intel_dp.c       |  3 +-
 drivers/gpu/drm/i915/display/intel_lvds.c     |  3 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c     |  2 +-
 drivers/gpu/drm/i915/display/intel_vbt_defs.h |  4 ++
 drivers/gpu/drm/i915/display/vlv_dsi.c        |  2 +-
 8 files changed, 39 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c 
b/drivers/gpu/drm/i915/display/icl_dsi.c
index 3b5305c219ba..b3aa430abd03 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -2050,7 +2050,7 @@ void icl_dsi_init(struct drm_i915_private *dev_priv)
        /* attach connector to encoder */
        intel_connector_attach_encoder(intel_connector, encoder);
 
-       intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL);
+       intel_bios_init_panel(dev_priv, intel_connector, NULL);
 
        mutex_lock(&dev->mode_config.mutex);
        intel_panel_add_vbt_lfp_fixed_mode(intel_connector);
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c 
b/drivers/gpu/drm/i915/display/intel_bios.c
index aaea27fe5d16..f74e63823c08 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -604,13 +604,15 @@ get_lfp_data_tail(const struct bdb_lvds_lfp_data *data,
 }
 
 static int opregion_get_panel_type(struct drm_i915_private *i915,
-                                  const struct edid *edid)
+                                  const struct edid *edid,
+                                  const struct intel_bios_encoder_data 
*devdata)
 {
        return intel_opregion_get_panel_type(i915);
 }
 
 static int vbt_get_panel_type(struct drm_i915_private *i915,
-                             const struct edid *edid)
+                             const struct edid *edid,
+                             const struct intel_bios_encoder_data *devdata)
 {
        const struct bdb_lvds_options *lvds_options;
 
@@ -625,11 +627,17 @@ static int vbt_get_panel_type(struct drm_i915_private 
*i915,
                return -1;
        }
 
-       return lvds_options->panel_type;
+       if (devdata->child.handle == DEVICE_HANDLE_LFP1)
+               return lvds_options->panel_type;
+       else if (devdata->child.handle == DEVICE_HANDLE_LFP2)
+               return lvds_options->panel_type2;
+       else
+               return -1;
 }
 
 static int pnpid_get_panel_type(struct drm_i915_private *i915,
-                               const struct edid *edid)
+                               const struct edid *edid,
+                               const struct intel_bios_encoder_data *devdata)
 {
        const struct bdb_lvds_lfp_data *data;
        const struct bdb_lvds_lfp_data_ptrs *ptrs;
@@ -675,7 +683,8 @@ static int pnpid_get_panel_type(struct drm_i915_private 
*i915,
 }
 
 static int fallback_get_panel_type(struct drm_i915_private *i915,
-                                  const struct edid *edid)
+                                  const struct edid *edid,
+                                  const struct intel_bios_encoder_data 
*devdata)
 {
        return 0;
 }
@@ -688,12 +697,14 @@ enum panel_type {
 };
 
 static int get_panel_type(struct drm_i915_private *i915,
-                         const struct edid *edid)
+                         const struct edid *edid,
+                         const struct intel_bios_encoder_data *devdata)
 {
        struct {
                const char *name;
                int (*get_panel_type)(struct drm_i915_private *i915,
-                                     const struct edid *edid);
+                                     const struct edid *edid,
+                                     const struct intel_bios_encoder_data 
*devdata);
                int panel_type;
        } panel_types[] = {
                [PANEL_TYPE_OPREGION] = {
@@ -716,7 +727,7 @@ static int get_panel_type(struct drm_i915_private *i915,
        int i;
 
        for (i = 0; i < ARRAY_SIZE(panel_types); i++) {
-               panel_types[i].panel_type = panel_types[i].get_panel_type(i915, 
edid);
+               panel_types[i].panel_type = panel_types[i].get_panel_type(i915, 
edid, devdata);
 
                drm_WARN_ON(&i915->drm, panel_types[i].panel_type > 0xf &&
                            panel_types[i].panel_type != 0xff);
@@ -747,7 +758,8 @@ static int get_panel_type(struct drm_i915_private *i915,
 static void
 parse_panel_options(struct drm_i915_private *i915,
                    struct intel_panel *panel,
-                   const struct edid *edid)
+                   const struct edid *edid,
+                   const struct intel_bios_encoder_data *devdata)
 {
        const struct bdb_lvds_options *lvds_options;
        int panel_type;
@@ -759,7 +771,7 @@ parse_panel_options(struct drm_i915_private *i915,
 
        panel->vbt.lvds_dither = lvds_options->pixel_dither;
 
-       panel_type = get_panel_type(i915, edid);
+       panel_type = get_panel_type(i915, edid, devdata);
 
        panel->vbt.panel_type = panel_type;
 
@@ -3103,12 +3115,16 @@ void intel_bios_init(struct drm_i915_private *i915)
 }
 
 void intel_bios_init_panel(struct drm_i915_private *i915,
-                          struct intel_panel *panel,
+                          struct intel_connector *intel_connector,
                           const struct edid *edid)
 {
+       struct intel_panel *panel = &intel_connector->panel;
+       struct intel_encoder *encoder = intel_connector->encoder;
+       const struct intel_bios_encoder_data *devdata = 
i915->vbt.ports[encoder->port];
+
        init_vbt_panel_defaults(panel);
 
-       parse_panel_options(i915, panel, edid);
+       parse_panel_options(i915, panel, edid, devdata);
        parse_generic_dtd(i915, panel);
        parse_lfp_data(i915, panel);
        parse_lfp_backlight(i915, panel);
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h 
b/drivers/gpu/drm/i915/display/intel_bios.h
index b112200ae0a0..e4c268495547 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -37,6 +37,7 @@ struct edid;
 struct intel_bios_encoder_data;
 struct intel_crtc_state;
 struct intel_encoder;
+struct intel_connector;
 struct intel_panel;
 enum port;
 
@@ -233,7 +234,7 @@ struct mipi_pps_data {
 
 void intel_bios_init(struct drm_i915_private *dev_priv);
 void intel_bios_init_panel(struct drm_i915_private *dev_priv,
-                          struct intel_panel *panel,
+                          struct intel_connector *intel_connector,
                           const struct edid *edid);
 void intel_bios_fini_panel(struct intel_panel *panel);
 void intel_bios_driver_remove(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index 2fac76bcf06d..8c41ba016cd2 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5224,8 +5224,7 @@ static bool intel_edp_init_connector(struct intel_dp 
*intel_dp,
        }
        intel_connector->edid = edid;
 
-       intel_bios_init_panel(dev_priv, &intel_connector->panel,
-                             IS_ERR(edid) ? NULL : edid);
+       intel_bios_init_panel(dev_priv, intel_connector, IS_ERR(edid) ? NULL : 
edid);
 
        intel_panel_add_edid_fixed_modes(intel_connector,
                                         intel_connector->panel.vbt.drrs_type 
!= DRRS_TYPE_NONE,
diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c 
b/drivers/gpu/drm/i915/display/intel_lvds.c
index e55802b45461..39a5e919eb06 100644
--- a/drivers/gpu/drm/i915/display/intel_lvds.c
+++ b/drivers/gpu/drm/i915/display/intel_lvds.c
@@ -967,8 +967,7 @@ void intel_lvds_init(struct drm_i915_private *dev_priv)
        }
        intel_connector->edid = edid;
 
-       intel_bios_init_panel(dev_priv, &intel_connector->panel,
-                             IS_ERR(edid) ? NULL : edid);
+       intel_bios_init_panel(dev_priv, intel_connector, IS_ERR(edid) ? NULL : 
edid);
 
        /* Try EDID first */
        intel_panel_add_edid_fixed_modes(intel_connector,
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c 
b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 2b78a790e1b6..c4ad943e84f5 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -2901,7 +2901,7 @@ intel_sdvo_lvds_init(struct intel_sdvo *intel_sdvo, int 
device)
        if (!intel_sdvo_create_enhance_property(intel_sdvo, 
intel_sdvo_connector))
                goto err;
 
-       intel_bios_init_panel(i915, &intel_connector->panel, NULL);
+       intel_bios_init_panel(i915, intel_connector, NULL);
 
        /*
         * Fetch modes from VBT. For SDVO prefer the VBT mode since some
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h 
b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index f8e5097222f2..31f5994f81de 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -182,6 +182,10 @@ struct bdb_general_features {
 #define GPIO_PIN_ADD_DDC       0x04 /* "ADDCARD DDC GPIO pins" */
 #define GPIO_PIN_ADD_DDC_I2C   0x06 /* "ADDCARD DDC/I2C GPIO pins" */
 
+/* Device handle */
+#define DEVICE_HANDLE_LFP1     0x0008
+#define DEVICE_HANDLE_LFP2     0x0080
+
 /* Pre 915 */
 #define DEVICE_TYPE_NONE       0x00
 #define DEVICE_TYPE_CRT                0x01
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c 
b/drivers/gpu/drm/i915/display/vlv_dsi.c
index abda0888c8d4..114e4f89f198 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1926,7 +1926,7 @@ void vlv_dsi_init(struct drm_i915_private *dev_priv)
 
        intel_dsi->panel_power_off_time = ktime_get_boottime();
 
-       intel_bios_init_panel(dev_priv, &intel_connector->panel, NULL);
+       intel_bios_init_panel(dev_priv, intel_connector, NULL);
 
        if (intel_connector->panel.vbt.dsi.config->dual_link)
                intel_dsi->ports = BIT(PORT_A) | BIT(PORT_C);
-- 
2.29.0

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