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Date: Tue, 7 Jan 2014 15:28:41 +0530
From: Ramkumar Ramachandra <artagnon@...il.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Andreas Heider <andreas@...tr.de>,
Seth Forshee <seth.forshee@...onical.com>
Subject: [PATCH 2/4] drm/i915: factor out intel_lvds_get_edid()
This code will be reused to support hybrid graphics on some Apple
machines that can't get a mode for the LVDS panel at boot, so move it
into a new function named intel_lvds_get_edid().
Cc: Andreas Heider <andreas@...tr.de>
Cc: Seth Forshee <seth.forshee@...onical.com>
Original-patch-by: Seth Forshee <seth.forshee@...onical.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@...il.com>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_lvds.c | 104 ++++++++++++++++++++++----------------
2 files changed, 61 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 90fcccb..2c055f8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1496,6 +1496,7 @@ typedef struct drm_i915_private {
} wm;
struct i915_package_c8 pc8;
+ struct drm_connector *int_lvds_connector;
/* Old dri1 support infrastructure, beware the dragons ya fools entering
* here! */
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index c3b4da7..6c09617 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -42,6 +42,7 @@
/* Private structure for the integrated LVDS support */
struct intel_lvds_connector {
struct intel_connector base;
+ u8 i2c_pin;
struct notifier_block lid_notifier;
};
@@ -921,6 +922,60 @@ static bool intel_lvds_supported(struct drm_device *dev)
return false;
}
+static bool intel_lvds_get_edid(struct drm_device *dev)
+{
+ struct edid *edid;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_connector *connector = dev_priv->int_lvds_connector;
+ struct intel_lvds_connector *lvds_connector = to_lvds_connector(connector);
+ struct drm_display_mode *scan; /* *modes, *bios_mode; */
+ struct drm_display_mode *fixed_mode = NULL;
+
+ /*
+ * Attempt to get the fixed panel mode from DDC. Assume that the
+ * preferred mode is the right one.
+ */
+ edid = drm_get_edid(connector, intel_gmbus_get_adapter(dev_priv, lvds_connector->i2c_pin));
+ if (edid) {
+ if (drm_add_edid_modes(connector, edid)) {
+ drm_mode_connector_update_edid_property(connector,
+ edid);
+ } else {
+ kfree(edid);
+ edid = ERR_PTR(-EINVAL);
+ }
+ } else {
+ edid = ERR_PTR(-ENOENT);
+ }
+ lvds_connector->base.edid = edid;
+
+ if (IS_ERR_OR_NULL(edid)) {
+ /* Didn't get an EDID, so
+ * Set wide sync ranges so we get all modes
+ * handed to valid_mode for checking
+ */
+ connector->display_info.min_vfreq = 0;
+ connector->display_info.max_vfreq = 200;
+ connector->display_info.min_hfreq = 0;
+ connector->display_info.max_hfreq = 200;
+ }
+
+ list_for_each_entry(scan, &connector->probed_modes, head) {
+ if (scan->type & DRM_MODE_TYPE_PREFERRED) {
+ DRM_DEBUG_KMS("using preferred mode from EDID: ");
+ drm_mode_debug_printmodeline(scan);
+
+ fixed_mode = drm_mode_duplicate(dev, scan);
+ if (fixed_mode) {
+ intel_find_lvds_downclock(dev, fixed_mode,
+ connector);
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
/**
* intel_lvds_init - setup LVDS connectors on this device
* @dev: drm device
@@ -937,9 +992,7 @@ void intel_lvds_init(struct drm_device *dev)
struct intel_connector *intel_connector;
struct drm_connector *connector;
struct drm_encoder *encoder;
- struct drm_display_mode *scan; /* *modes, *bios_mode; */
struct drm_display_mode *fixed_mode = NULL;
- struct edid *edid;
struct drm_crtc *crtc;
u32 lvds;
int pipe;
@@ -978,11 +1031,13 @@ void intel_lvds_init(struct drm_device *dev)
}
lvds_encoder->attached_connector = lvds_connector;
+ lvds_connector->i2c_pin = pin;
intel_encoder = &lvds_encoder->base;
encoder = &intel_encoder->base;
intel_connector = &lvds_connector->base;
connector = &intel_connector->base;
+ dev_priv->int_lvds_connector = connector;
drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs,
DRM_MODE_CONNECTOR_LVDS);
@@ -1036,48 +1091,8 @@ void intel_lvds_init(struct drm_device *dev)
* if closed, act like it's not there for now
*/
- /*
- * Attempt to get the fixed panel mode from DDC. Assume that the
- * preferred mode is the right one.
- */
- edid = drm_get_edid(connector, intel_gmbus_get_adapter(dev_priv, pin));
- if (edid) {
- if (drm_add_edid_modes(connector, edid)) {
- drm_mode_connector_update_edid_property(connector,
- edid);
- } else {
- kfree(edid);
- edid = ERR_PTR(-EINVAL);
- }
- } else {
- edid = ERR_PTR(-ENOENT);
- }
- lvds_connector->base.edid = edid;
-
- if (IS_ERR_OR_NULL(edid)) {
- /* Didn't get an EDID, so
- * Set wide sync ranges so we get all modes
- * handed to valid_mode for checking
- */
- connector->display_info.min_vfreq = 0;
- connector->display_info.max_vfreq = 200;
- connector->display_info.min_hfreq = 0;
- connector->display_info.max_hfreq = 200;
- }
-
- list_for_each_entry(scan, &connector->probed_modes, head) {
- if (scan->type & DRM_MODE_TYPE_PREFERRED) {
- DRM_DEBUG_KMS("using preferred mode from EDID: ");
- drm_mode_debug_printmodeline(scan);
-
- fixed_mode = drm_mode_duplicate(dev, scan);
- if (fixed_mode) {
- intel_find_lvds_downclock(dev, fixed_mode,
- connector);
- goto out;
- }
- }
- }
+ if (intel_lvds_get_edid(dev))
+ goto out;
/* Failed to get EDID, what about VBT? */
if (dev_priv->vbt.lfp_lvds_vbt_mode) {
@@ -1149,6 +1164,7 @@ out:
failed:
DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
+ dev_priv->int_lvds_connector = NULL;
drm_connector_cleanup(connector);
drm_encoder_cleanup(encoder);
if (fixed_mode)
--
1.8.5.2.229.g4448466
--
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