Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 174 insertions, 117 deletions

diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 05598ae10c4b..b66806a37d37 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -30,6 +30,7 @@
 #include <acpi/button.h>
 #include <linux/dmi.h>
 #include <linux/i2c.h>
+#include <linux/slab.h>
 #include "drmP.h"
 #include "drm.h"
 #include "drm_crtc.h"
@@ -56,7 +57,7 @@ static void intel_lvds_set_backlight(struct drm_device *dev, int level)
         struct drm_i915_private *dev_priv = dev->dev_private;
         u32 blc_pwm_ctl, reg;
 
-        if (IS_IGDNG(dev))
+        if (HAS_PCH_SPLIT(dev))
                 reg = BLC_PWM_CPU_CTL;
         else
                 reg = BLC_PWM_CTL;
@@ -74,7 +75,7 @@ static u32 intel_lvds_get_max_backlight(struct drm_device *dev)
         struct drm_i915_private *dev_priv = dev->dev_private;
         u32 reg;
 
-        if (IS_IGDNG(dev))
+        if (HAS_PCH_SPLIT(dev))
                 reg = BLC_PWM_PCH_CTL2;
         else
                 reg = BLC_PWM_CTL;
@@ -89,17 +90,22 @@ static u32 intel_lvds_get_max_backlight(struct drm_device *dev)
 static void intel_lvds_set_power(struct drm_device *dev, bool on)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
-        u32 pp_status, ctl_reg, status_reg;
+        u32 pp_status, ctl_reg, status_reg, lvds_reg;
 
-        if (IS_IGDNG(dev)) {
+        if (HAS_PCH_SPLIT(dev)) {
                 ctl_reg = PCH_PP_CONTROL;
                 status_reg = PCH_PP_STATUS;
+                lvds_reg = PCH_LVDS;
         } else {
                 ctl_reg = PP_CONTROL;
                 status_reg = PP_STATUS;
+                lvds_reg = LVDS;
         }
 
         if (on) {
+                I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);
+                POSTING_READ(lvds_reg);
+
                 I915_WRITE(ctl_reg, I915_READ(ctl_reg) |
                            POWER_TARGET_ON);
                 do {
@@ -115,6 +121,9 @@ static void intel_lvds_set_power(struct drm_device *dev, bool on)
                 do {
                         pp_status = I915_READ(status_reg);
                 } while (pp_status & PP_ON);
+
+                I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN);
+                POSTING_READ(lvds_reg);
         }
 }
 
@@ -137,7 +146,7 @@ static void intel_lvds_save(struct drm_connector *connector)
         u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg;
         u32 pwm_ctl_reg;
 
-        if (IS_IGDNG(dev)) {
+        if (HAS_PCH_SPLIT(dev)) {
                 pp_on_reg = PCH_PP_ON_DELAYS;
                 pp_off_reg = PCH_PP_OFF_DELAYS;
                 pp_ctl_reg = PCH_PP_CONTROL;
@@ -174,7 +183,7 @@ static void intel_lvds_restore(struct drm_connector *connector)
         u32 pp_on_reg, pp_off_reg, pp_ctl_reg, pp_div_reg;
         u32 pwm_ctl_reg;
 
-        if (IS_IGDNG(dev)) {
+        if (HAS_PCH_SPLIT(dev)) {
                 pp_on_reg = PCH_PP_ON_DELAYS;
                 pp_off_reg = PCH_PP_OFF_DELAYS;
                 pp_ctl_reg = PCH_PP_CONTROL;
@@ -230,8 +239,8 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
         struct drm_encoder *tmp_encoder;
-        struct intel_output *intel_output = enc_to_intel_output(encoder);
-        struct intel_lvds_priv *lvds_priv = intel_output->dev_priv;
+        struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
+        struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv;
         u32 pfit_control = 0, pfit_pgm_ratios = 0;
         int left_border = 0, right_border = 0, top_border = 0;
         int bottom_border = 0;
@@ -297,7 +306,7 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
         }
 
         /* full screen scale for now */
-        if (IS_IGDNG(dev))
+        if (HAS_PCH_SPLIT(dev))
                 goto out;
 
         /* 965+ wants fuzzy fitting */
@@ -327,7 +336,7 @@ static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
          * to register description and PRM.
          * Change the value here to see the borders for debugging
          */
-        if (!IS_IGDNG(dev)) {
+        if (!HAS_PCH_SPLIT(dev)) {
                 I915_WRITE(BCLRPAT_A, 0);
                 I915_WRITE(BCLRPAT_B, 0);
         }
@@ -548,7 +557,7 @@ static void intel_lvds_prepare(struct drm_encoder *encoder)
         struct drm_i915_private *dev_priv = dev->dev_private;
         u32 reg;
 
-        if (IS_IGDNG(dev))
+        if (HAS_PCH_SPLIT(dev))
                 reg = BLC_PWM_CPU_CTL;
         else
                 reg = BLC_PWM_CTL;
@@ -578,8 +587,8 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder,
 {
         struct drm_device *dev = encoder->dev;
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_output *intel_output = enc_to_intel_output(encoder);
-        struct intel_lvds_priv *lvds_priv = intel_output->dev_priv;
+        struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
+        struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv;
 
         /*
          * The LVDS pin pair will already have been turned on in the
@@ -587,7 +596,7 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder,
          * settings.
          */
 
-        if (IS_IGDNG(dev))
+        if (HAS_PCH_SPLIT(dev))
                 return;
 
         /*
@@ -599,18 +608,6 @@ static void intel_lvds_mode_set(struct drm_encoder *encoder,
         I915_WRITE(PFIT_CONTROL, lvds_priv->pfit_control);
 }
 
-/* Some lid devices report incorrect lid status, assume they're connected */
-static const struct dmi_system_id bad_lid_status[] = {
-        {
-                .ident = "Aspire One",
-                .matches = {
-                        DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
-                        DMI_MATCH(DMI_PRODUCT_NAME, "Aspire one"),
-                },
-        },
-        { }
-};
-
 /**
  * Detect the LVDS connection.
  *
@@ -620,10 +617,14 @@ static const struct dmi_system_id bad_lid_status[] = {
  */
 static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector)
 {
+        struct drm_device *dev = connector->dev;
         enum drm_connector_status status = connector_status_connected;
 
-        if (!acpi_lid_open() && !dmi_check_system(bad_lid_status))
-                status = connector_status_disconnected;
+        /* ACPI lid methods were generally unreliable in this generation, so
+         * don't even bother.
+         */
+        if (IS_GEN2(dev) || IS_GEN3(dev))
+                return connector_status_connected;
 
         return status;
 }
@@ -634,14 +635,16 @@ static enum drm_connector_status intel_lvds_detect(struct drm_connector *connect
 static int intel_lvds_get_modes(struct drm_connector *connector)
 {
         struct drm_device *dev = connector->dev;
-        struct intel_output *intel_output = to_intel_output(connector);
+        struct intel_encoder *intel_encoder = to_intel_encoder(connector);
         struct drm_i915_private *dev_priv = dev->dev_private;
         int ret = 0;
 
-        ret = intel_ddc_get_modes(intel_output);
+        if (dev_priv->lvds_edid_good) {
+                ret = intel_ddc_get_modes(intel_encoder);
 
-        if (ret)
-                return ret;
+                if (ret)
+                        return ret;
+        }
 
         /* Didn't get an EDID, so
          * Set wide sync ranges so we get all modes
@@ -679,7 +682,14 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
         struct drm_i915_private *dev_priv =
                 container_of(nb, struct drm_i915_private, lid_notifier);
         struct drm_device *dev = dev_priv->dev;
+        struct drm_connector *connector = dev_priv->int_lvds_connector;
 
+        /*
+         * check and update the status of LVDS connector after receiving
+         * the LID nofication event.
+         */
+        if (connector)
+                connector->status = connector->funcs->detect(connector);
         if (!acpi_lid_open()) {
                 dev_priv->modeset_on_lid = 1;
                 return NOTIFY_OK;
@@ -707,11 +717,11 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
 static void intel_lvds_destroy(struct drm_connector *connector)
 {
         struct drm_device *dev = connector->dev;
-        struct intel_output *intel_output = to_intel_output(connector);
+        struct intel_encoder *intel_encoder = to_intel_encoder(connector);
         struct drm_i915_private *dev_priv = dev->dev_private;
 
-        if (intel_output->ddc_bus)
-                intel_i2c_destroy(intel_output->ddc_bus);
+        if (intel_encoder->ddc_bus)
+                intel_i2c_destroy(intel_encoder->ddc_bus);
         if (dev_priv->lid_notifier.notifier_call)
                 acpi_lid_notifier_unregister(&dev_priv->lid_notifier);
         drm_sysfs_connector_remove(connector);
@@ -724,13 +734,13 @@ static int intel_lvds_set_property(struct drm_connector *connector,
                                    uint64_t value)
 {
         struct drm_device *dev = connector->dev;
-        struct intel_output *intel_output =
-                        to_intel_output(connector);
+        struct intel_encoder *intel_encoder =
+                        to_intel_encoder(connector);
 
         if (property == dev->mode_config.scaling_mode_property &&
                                 connector->encoder) {
                 struct drm_crtc *crtc = connector->encoder->crtc;
-                struct intel_lvds_priv *lvds_priv = intel_output->dev_priv;
+                struct intel_lvds_priv *lvds_priv = intel_encoder->dev_priv;
                 if (value == DRM_MODE_SCALE_NONE) {
                         DRM_DEBUG_KMS("no scaling not supported\n");
                         return 0;
@@ -850,68 +860,113 @@ static const struct dmi_system_id intel_no_lvds[] = {
                         DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"),
                 },
         },
+        {
+                .callback = intel_no_lvds_dmi_callback,
+                .ident = "Clientron U800",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "U800"),
+                },
+        },
 
         { }     /* terminating entry */
 };
 
-#ifdef CONFIG_ACPI
-/*
- * check_lid_device -- check whether @handle is an ACPI LID device.
- * @handle: ACPI device handle
- * @level : depth in the ACPI namespace tree
- * @context: the number of LID device when we find the device
- * @rv: a return value to fill if desired (Not use)
+/**
+ * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
+ * @dev: drm device
+ * @connector: LVDS connector
+ *
+ * Find the reduced downclock for LVDS in EDID.
  */
-static acpi_status
-check_lid_device(acpi_handle handle, u32 level, void *context,
-                        void **return_value)
+static void intel_find_lvds_downclock(struct drm_device *dev,
+                                struct drm_connector *connector)
 {
-        struct acpi_device *acpi_dev;
-        int *lid_present = context;
-
-        acpi_dev = NULL;
-        /* Get the acpi device for device handle */
-        if (acpi_bus_get_device(handle, &acpi_dev) || !acpi_dev) {
-                /* If there is no ACPI device for handle, return */
-                return AE_OK;
-        }
+        struct drm_i915_private *dev_priv = dev->dev_private;
+        struct drm_display_mode *scan, *panel_fixed_mode;
+        int temp_downclock;
 
-        if (!strncmp(acpi_device_hid(acpi_dev), "PNP0C0D", 7))
-                *lid_present = 1;
+        panel_fixed_mode = dev_priv->panel_fixed_mode;
+        temp_downclock = panel_fixed_mode->clock;
 
-        return AE_OK;
+        mutex_lock(&dev->mode_config.mutex);
+        list_for_each_entry(scan, &connector->probed_modes, head) {
+                /*
+                 * If one mode has the same resolution with the fixed_panel
+                 * mode while they have the different refresh rate, it means
+                 * that the reduced downclock is found for the LVDS. In such
+                 * case we can set the different FPx0/1 to dynamically select
+                 * between low and high frequency.
+                 */
+                if (scan->hdisplay == panel_fixed_mode->hdisplay &&
+                        scan->hsync_start == panel_fixed_mode->hsync_start &&
+                        scan->hsync_end == panel_fixed_mode->hsync_end &&
+                        scan->htotal == panel_fixed_mode->htotal &&
+                        scan->vdisplay == panel_fixed_mode->vdisplay &&
+                        scan->vsync_start == panel_fixed_mode->vsync_start &&
+                        scan->vsync_end == panel_fixed_mode->vsync_end &&
+                        scan->vtotal == panel_fixed_mode->vtotal) {
+                        if (scan->clock < temp_downclock) {
+                                /*
+                                 * The downclock is already found. But we
+                                 * expect to find the lower downclock.
+                                 */
+                                temp_downclock = scan->clock;
+                        }
+                }
+        }
+        mutex_unlock(&dev->mode_config.mutex);
+        if (temp_downclock < panel_fixed_mode->clock &&
+            i915_lvds_downclock) {
+                /* We found the downclock for LVDS. */
+                dev_priv->lvds_downclock_avail = 1;
+                dev_priv->lvds_downclock = temp_downclock;
+                DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
+                                "Normal clock %dKhz, downclock %dKhz\n",
+                                panel_fixed_mode->clock, temp_downclock);
+        }
+        return;
 }
 
-/**
- * check whether there exists the ACPI LID device by enumerating the ACPI
- * device tree.
+/*
+ * Enumerate the child dev array parsed from VBT to check whether
+ * the LVDS is present.
+ * If it is present, return 1.
+ * If it is not present, return false.
+ * If no child dev is parsed from VBT, it assumes that the LVDS is present.
+ * Note: The addin_offset should also be checked for LVDS panel.
+ * Only when it is non-zero, it is assumed that it is present.
  */
-static int intel_lid_present(void)
+static int lvds_is_present_in_vbt(struct drm_device *dev)
 {
-        int lid_present = 0;
+        struct drm_i915_private *dev_priv = dev->dev_private;
+        struct child_device_config *p_child;
+        int i, ret;
 
-        if (acpi_disabled) {
-                /* If ACPI is disabled, there is no ACPI device tree to
-                 * check, so assume the LID device would have been present.
-                 */
+        if (!dev_priv->child_dev_num)
                 return 1;
-        }
 
-        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                                ACPI_UINT32_MAX,
-                                check_lid_device, &lid_present, NULL);
+        ret = 0;
+        for (i = 0; i < dev_priv->child_dev_num; i++) {
+                p_child = dev_priv->child_dev + i;
+                /*
+                 * If the device type is not LFP, continue.
+                 * If the device type is 0x22, it is also regarded as LFP.
+                 */
+                if (p_child->device_type != DEVICE_TYPE_INT_LFP &&
+                        p_child->device_type != DEVICE_TYPE_LFP)
+                        continue;
 
-        return lid_present;
-}
-#else
-static int intel_lid_present(void)
-{
-        /* In the absence of ACPI built in, assume that the LID device would
-         * have been present.
-         */
-        return 1;
+                /* The addin_offset should be checked. Only when it is
+                 * non-zero, it is regarded as present.
+                 */
+                if (p_child->addin_offset) {
+                        ret = 1;
+                        break;
+                }
+        }
+        return ret;
 }
-#endif
 
 /**
  * intel_lvds_init - setup LVDS connectors on this device
@@ -923,7 +978,7 @@ static int intel_lid_present(void)
 void intel_lvds_init(struct drm_device *dev)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
-        struct intel_output *intel_output;
+        struct intel_encoder *intel_encoder;
         struct drm_connector *connector;
         struct drm_encoder *encoder;
         struct drm_display_mode *scan; /* *modes, *bios_mode; */
@@ -936,60 +991,55 @@ void intel_lvds_init(struct drm_device *dev)
         if (dmi_check_system(intel_no_lvds))
                 return;
 
-        /* Assume that any device without an ACPI LID device also doesn't
-         * have an integrated LVDS.  We would be better off parsing the BIOS
-         * to get a reliable indicator, but that code isn't written yet.
-         *
-         * In the case of all-in-one desktops using LVDS that we've seen,
-         * they're using SDVO LVDS.
-         */
-        if (!intel_lid_present())
+        if (!lvds_is_present_in_vbt(dev)) {
+                DRM_DEBUG_KMS("LVDS is not present in VBT\n");
                 return;
+        }
 
-        if (IS_IGDNG(dev)) {
+        if (HAS_PCH_SPLIT(dev)) {
                 if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0)
                         return;
                 if (dev_priv->edp_support) {
-                        DRM_DEBUG("disable LVDS for eDP support\n");
+                        DRM_DEBUG_KMS("disable LVDS for eDP support\n");
                         return;
                 }
                 gpio = PCH_GPIOC;
         }
 
-        intel_output = kzalloc(sizeof(struct intel_output) +
+        intel_encoder = kzalloc(sizeof(struct intel_encoder) +
                                 sizeof(struct intel_lvds_priv), GFP_KERNEL);
-        if (!intel_output) {
+        if (!intel_encoder) {
                 return;
         }
 
-        connector = &intel_output->base;
-        encoder = &intel_output->enc;
-        drm_connector_init(dev, &intel_output->base, &intel_lvds_connector_funcs,
+        connector = &intel_encoder->base;
+        encoder = &intel_encoder->enc;
+        drm_connector_init(dev, &intel_encoder->base, &intel_lvds_connector_funcs,
                            DRM_MODE_CONNECTOR_LVDS);
 
-        drm_encoder_init(dev, &intel_output->enc, &intel_lvds_enc_funcs,
+        drm_encoder_init(dev, &intel_encoder->enc, &intel_lvds_enc_funcs,
                          DRM_MODE_ENCODER_LVDS);
 
-        drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc);
-        intel_output->type = INTEL_OUTPUT_LVDS;
+        drm_mode_connector_attach_encoder(&intel_encoder->base, &intel_encoder->enc);
+        intel_encoder->type = INTEL_OUTPUT_LVDS;
 
-        intel_output->clone_mask = (1 << INTEL_LVDS_CLONE_BIT);
-        intel_output->crtc_mask = (1 << 1);
+        intel_encoder->clone_mask = (1 << INTEL_LVDS_CLONE_BIT);
+        intel_encoder->crtc_mask = (1 << 1);
         drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs);
         drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
         connector->display_info.subpixel_order = SubPixelHorizontalRGB;
         connector->interlace_allowed = false;
         connector->doublescan_allowed = false;
 
-        lvds_priv = (struct intel_lvds_priv *)(intel_output + 1);
-        intel_output->dev_priv = lvds_priv;
+        lvds_priv = (struct intel_lvds_priv *)(intel_encoder + 1);
+        intel_encoder->dev_priv = lvds_priv;
         /* create the scaling mode property */
         drm_mode_create_scaling_mode_property(dev);
         /*
          * the initial panel fitting mode will be FULL_SCREEN.
          */
 
-        drm_connector_attach_property(&intel_output->base,
+        drm_connector_attach_property(&intel_encoder->base,
                                       dev->mode_config.scaling_mode_property,
                                       DRM_MODE_SCALE_FULLSCREEN);
         lvds_priv->fitting_mode = DRM_MODE_SCALE_FULLSCREEN;
@@ -1004,8 +1054,8 @@ void intel_lvds_init(struct drm_device *dev)
          */
 
         /* Set up the DDC bus. */
-        intel_output->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C");
-        if (!intel_output->ddc_bus) {
+        intel_encoder->ddc_bus = intel_i2c_create(dev, gpio, "LVDSDDC_C");
+        if (!intel_encoder->ddc_bus) {
                 dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
                            "failed.\n");
                 goto failed;
@@ -1015,7 +1065,10 @@ void intel_lvds_init(struct drm_device *dev)
          * Attempt to get the fixed panel mode from DDC.  Assume that the
          * preferred mode is the right one.
          */
-        intel_ddc_get_modes(intel_output);
+        dev_priv->lvds_edid_good = true;
+
+        if (!intel_ddc_get_modes(intel_encoder))
+                dev_priv->lvds_edid_good = false;
 
         list_for_each_entry(scan, &connector->probed_modes, head) {
                 mutex_lock(&dev->mode_config.mutex);
@@ -1023,6 +1076,7 @@ void intel_lvds_init(struct drm_device *dev)
                         dev_priv->panel_fixed_mode =
                                 drm_mode_duplicate(dev, scan);
                         mutex_unlock(&dev->mode_config.mutex);
+                        intel_find_lvds_downclock(dev, connector);
                         goto out;
                 }
                 mutex_unlock(&dev->mode_config.mutex);
@@ -1047,8 +1101,8 @@ void intel_lvds_init(struct drm_device *dev)
          * correct mode.
          */
 
-        /* IGDNG: FIXME if still fail, not try pipe mode now */
-        if (IS_IGDNG(dev))
+        /* Ironlake: FIXME if still fail, not try pipe mode now */
+        if (HAS_PCH_SPLIT(dev))
                 goto failed;
 
         lvds = I915_READ(LVDS);
@@ -1069,7 +1123,7 @@ void intel_lvds_init(struct drm_device *dev)
                 goto failed;
 
 out:
-        if (IS_IGDNG(dev)) {
+        if (HAS_PCH_SPLIT(dev)) {
                 u32 pwm;
                 /* make sure PWM is enabled */
                 pwm = I915_READ(BLC_PWM_CPU_CTL2);
@@ -1082,16 +1136,19 @@ out:
         }
         dev_priv->lid_notifier.notifier_call = intel_lid_notify;
         if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) {
-                DRM_DEBUG("lid notifier registration failed\n");
+                DRM_DEBUG_KMS("lid notifier registration failed\n");
                 dev_priv->lid_notifier.notifier_call = NULL;
         }
+        /* keep the LVDS connector */
+        dev_priv->int_lvds_connector = connector;
         drm_sysfs_connector_add(connector);
         return;
 
 failed:
         DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
-        if (intel_output->ddc_bus)
-                intel_i2c_destroy(intel_output->ddc_bus);
+        if (intel_encoder->ddc_bus)
+                intel_i2c_destroy(intel_encoder->ddc_bus);
         drm_connector_cleanup(connector);
-        kfree(intel_output);
+        drm_encoder_cleanup(encoder);
+        kfree(intel_encoder);
 }