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path: root/drivers/gpu/drm/i915/intel_bios.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_bios.c')
-rw-r--r--drivers/gpu/drm/i915/intel_bios.c137
1 files changed, 120 insertions, 17 deletions
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 96cd256e60e..f2756774758 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -114,6 +114,8 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
struct lvds_dvo_timing *dvo_timing;
struct drm_display_mode *panel_fixed_mode;
int lfp_data_size, dvo_timing_offset;
+ int i, temp_downclock;
+ struct drm_display_mode *temp_mode;
/* Defaults if we can't find VBT info */
dev_priv->lvds_dither = 0;
@@ -159,9 +161,49 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode;
- DRM_DEBUG("Found panel mode in BIOS VBT tables:\n");
+ DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n");
drm_mode_debug_printmodeline(panel_fixed_mode);
+ temp_mode = kzalloc(sizeof(*temp_mode), GFP_KERNEL);
+ temp_downclock = panel_fixed_mode->clock;
+ /*
+ * enumerate the LVDS panel timing info entry in VBT to check whether
+ * the LVDS downclock is found.
+ */
+ for (i = 0; i < 16; i++) {
+ entry = (struct bdb_lvds_lfp_data_entry *)
+ ((uint8_t *)lvds_lfp_data->data + (lfp_data_size * i));
+ dvo_timing = (struct lvds_dvo_timing *)
+ ((unsigned char *)entry + dvo_timing_offset);
+
+ fill_detail_timing_data(temp_mode, dvo_timing);
+
+ if (temp_mode->hdisplay == panel_fixed_mode->hdisplay &&
+ temp_mode->hsync_start == panel_fixed_mode->hsync_start &&
+ temp_mode->hsync_end == panel_fixed_mode->hsync_end &&
+ temp_mode->htotal == panel_fixed_mode->htotal &&
+ temp_mode->vdisplay == panel_fixed_mode->vdisplay &&
+ temp_mode->vsync_start == panel_fixed_mode->vsync_start &&
+ temp_mode->vsync_end == panel_fixed_mode->vsync_end &&
+ temp_mode->vtotal == panel_fixed_mode->vtotal &&
+ temp_mode->clock < temp_downclock) {
+ /*
+ * downclock is already found. But we expect
+ * to find the lower downclock.
+ */
+ temp_downclock = temp_mode->clock;
+ }
+ /* clear it to zero */
+ memset(temp_mode, 0, sizeof(*temp_mode));
+ }
+ kfree(temp_mode);
+ if (temp_downclock < panel_fixed_mode->clock) {
+ dev_priv->lvds_downclock_avail = 1;
+ dev_priv->lvds_downclock = temp_downclock;
+ DRM_DEBUG_KMS("LVDS downclock is found in VBT. ",
+ "Normal Clock %dKHz, downclock %dKHz\n",
+ temp_downclock, panel_fixed_mode->clock);
+ }
return;
}
@@ -217,7 +259,7 @@ parse_general_features(struct drm_i915_private *dev_priv,
if (IS_I85X(dev_priv->dev))
dev_priv->lvds_ssc_freq =
general->ssc_freq ? 66 : 48;
- else if (IS_IGDNG(dev_priv->dev))
+ else if (IS_IRONLAKE(dev_priv->dev))
dev_priv->lvds_ssc_freq =
general->ssc_freq ? 100 : 120;
else
@@ -241,22 +283,18 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
GPIOF,
};
- /* Set sensible defaults in case we can't find the general block
- or it is the wrong chipset */
- dev_priv->crt_ddc_bus = -1;
-
general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
if (general) {
u16 block_size = get_blocksize(general);
if (block_size >= sizeof(*general)) {
int bus_pin = general->crt_ddc_gmbus_pin;
- DRM_DEBUG("crt_ddc_bus_pin: %d\n", bus_pin);
+ DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
if ((bus_pin >= 1) && (bus_pin <= 6)) {
dev_priv->crt_ddc_bus =
crt_bus_map_table[bus_pin-1];
}
} else {
- DRM_DEBUG("BDB_GD too small (%d). Invalid.\n",
+ DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
block_size);
}
}
@@ -274,7 +312,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
if (!p_defs) {
- DRM_DEBUG("No general definition block is found\n");
+ DRM_DEBUG_KMS("No general definition block is found\n");
return;
}
/* judge whether the size of child device meets the requirements.
@@ -284,7 +322,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
*/
if (p_defs->child_dev_size != sizeof(*p_child)) {
/* different child dev size . Ignore it */
- DRM_DEBUG("different child size is found. Invalid.\n");
+ DRM_DEBUG_KMS("different child size is found. Invalid.\n");
return;
}
/* get the block size of general definitions */
@@ -310,11 +348,11 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
if (p_child->dvo_port != DEVICE_PORT_DVOB &&
p_child->dvo_port != DEVICE_PORT_DVOC) {
/* skip the incorrect SDVO port */
- DRM_DEBUG("Incorrect SDVO port. Skip it \n");
+ DRM_DEBUG_KMS("Incorrect SDVO port. Skip it \n");
continue;
}
- DRM_DEBUG("the SDVO device with slave addr %2x is found on "
- "%s port\n",
+ DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on"
+ " %s port\n",
p_child->slave_addr,
(p_child->dvo_port == DEVICE_PORT_DVOB) ?
"SDVOB" : "SDVOC");
@@ -325,21 +363,21 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
p_mapping->dvo_wiring = p_child->dvo_wiring;
p_mapping->initialized = 1;
} else {
- DRM_DEBUG("Maybe one SDVO port is shared by "
+ DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
"two SDVO device.\n");
}
if (p_child->slave2_addr) {
/* Maybe this is a SDVO device with multiple inputs */
/* And the mapping info is not added */
- DRM_DEBUG("there exists the slave2_addr. Maybe this "
- "is a SDVO device with multiple inputs.\n");
+ DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this"
+ " is a SDVO device with multiple inputs.\n");
}
count++;
}
if (!count) {
/* No SDVO device info is found */
- DRM_DEBUG("No SDVO device info is found in VBT\n");
+ DRM_DEBUG_KMS("No SDVO device info is found in VBT\n");
}
return;
}
@@ -366,6 +404,70 @@ parse_driver_features(struct drm_i915_private *dev_priv,
dev_priv->render_reclock_avail = true;
}
+static void
+parse_device_mapping(struct drm_i915_private *dev_priv,
+ struct bdb_header *bdb)
+{
+ struct bdb_general_definitions *p_defs;
+ struct child_device_config *p_child, *child_dev_ptr;
+ int i, child_device_num, count;
+ u16 block_size;
+
+ p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
+ if (!p_defs) {
+ DRM_DEBUG_KMS("No general definition block is found\n");
+ return;
+ }
+ /* judge whether the size of child device meets the requirements.
+ * If the child device size obtained from general definition block
+ * is different with sizeof(struct child_device_config), skip the
+ * parsing of sdvo device info
+ */
+ if (p_defs->child_dev_size != sizeof(*p_child)) {
+ /* different child dev size . Ignore it */
+ DRM_DEBUG_KMS("different child size is found. Invalid.\n");
+ return;
+ }
+ /* get the block size of general definitions */
+ block_size = get_blocksize(p_defs);
+ /* get the number of child device */
+ child_device_num = (block_size - sizeof(*p_defs)) /
+ sizeof(*p_child);
+ count = 0;
+ /* get the number of child device that is present */
+ for (i = 0; i < child_device_num; i++) {
+ p_child = &(p_defs->devices[i]);
+ if (!p_child->device_type) {
+ /* skip the device block if device type is invalid */
+ continue;
+ }
+ count++;
+ }
+ if (!count) {
+ DRM_DEBUG_KMS("no child dev is parsed from VBT \n");
+ return;
+ }
+ dev_priv->child_dev = kzalloc(sizeof(*p_child) * count, GFP_KERNEL);
+ if (!dev_priv->child_dev) {
+ DRM_DEBUG_KMS("No memory space for child device\n");
+ return;
+ }
+
+ dev_priv->child_dev_num = count;
+ count = 0;
+ for (i = 0; i < child_device_num; i++) {
+ p_child = &(p_defs->devices[i]);
+ if (!p_child->device_type) {
+ /* skip the device block if device type is invalid */
+ continue;
+ }
+ child_dev_ptr = dev_priv->child_dev + count;
+ count++;
+ memcpy((void *)child_dev_ptr, (void *)p_child,
+ sizeof(*p_child));
+ }
+ return;
+}
/**
* intel_init_bios - initialize VBIOS settings & find VBT
* @dev: DRM device
@@ -417,6 +519,7 @@ intel_init_bios(struct drm_device *dev)
parse_lfp_panel_data(dev_priv, bdb);
parse_sdvo_panel_data(dev_priv, bdb);
parse_sdvo_device_mapping(dev_priv, bdb);
+ parse_device_mapping(dev_priv, bdb);
parse_driver_features(dev_priv, bdb);
pci_unmap_rom(pdev, bios);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-15 18:43:24 +0000