1 files changed, 199 insertions, 91 deletions

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 96f75d7f6633..927442a11925 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -24,6 +24,7 @@
  *    Eric Anholt <eric@anholt.net>
  *
  */
+#include <drm/drm_dp_helper.h>
 #include "drmP.h"
 #include "drm.h"
 #include "i915_drm.h"
@@ -129,10 +130,6 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
         int i, temp_downclock;
         struct drm_display_mode *temp_mode;
 
-        /* Defaults if we can't find VBT info */
-        dev_priv->lvds_dither = 0;
-        dev_priv->lvds_vbt = 0;
-
         lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
         if (!lvds_options)
                 return;
@@ -140,6 +137,7 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
         dev_priv->lvds_dither = lvds_options->pixel_dither;
         if (lvds_options->panel_type == 0xff)
                 return;
+
         panel_type = lvds_options->panel_type;
 
         lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
@@ -169,6 +167,8 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
                         ((unsigned char *)entry + dvo_timing_offset);
 
         panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
+        if (!panel_fixed_mode)
+                return;
 
         fill_detail_timing_data(panel_fixed_mode, dvo_timing);
 
@@ -214,9 +214,9 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
             i915_lvds_downclock) {
                 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);
+                DRM_DEBUG_KMS("LVDS downclock is found in VBT. "
+                              "Normal Clock %dKHz, downclock %dKHz\n",
+                              temp_downclock, panel_fixed_mode->clock);
         }
         return;
 }
@@ -226,31 +226,49 @@ static void
 parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
                       struct bdb_header *bdb)
 {
-        struct bdb_sdvo_lvds_options *sdvo_lvds_options;
         struct lvds_dvo_timing *dvo_timing;
         struct drm_display_mode *panel_fixed_mode;
+        int index;
 
-        dev_priv->sdvo_lvds_vbt_mode = NULL;
+        index = i915_vbt_sdvo_panel_type;
+        if (index == -1) {
+                struct bdb_sdvo_lvds_options *sdvo_lvds_options;
 
-        sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
-        if (!sdvo_lvds_options)
-                return;
+                sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS);
+                if (!sdvo_lvds_options)
+                        return;
+
+                index = sdvo_lvds_options->panel_type;
+        }
 
         dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS);
         if (!dvo_timing)
                 return;
 
         panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
-
         if (!panel_fixed_mode)
                 return;
 
-        fill_detail_timing_data(panel_fixed_mode,
-                        dvo_timing + sdvo_lvds_options->panel_type);
+        fill_detail_timing_data(panel_fixed_mode, dvo_timing + index);
 
         dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode;
 
-        return;
+        DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n");
+        drm_mode_debug_printmodeline(panel_fixed_mode);
+}
+
+static int intel_bios_ssc_frequency(struct drm_device *dev,
+                                    bool alternate)
+{
+        switch (INTEL_INFO(dev)->gen) {
+        case 2:
+                return alternate ? 66 : 48;
+        case 3:
+        case 4:
+                return alternate ? 100 : 96;
+        default:
+                return alternate ? 100 : 120;
+        }
 }
 
 static void
@@ -260,27 +278,13 @@ parse_general_features(struct drm_i915_private *dev_priv,
         struct drm_device *dev = dev_priv->dev;
         struct bdb_general_features *general;
 
-        /* Set sensible defaults in case we can't find the general block */
-        dev_priv->int_tv_support = 1;
-        dev_priv->int_crt_support = 1;
-
         general = find_section(bdb, BDB_GENERAL_FEATURES);
         if (general) {
                 dev_priv->int_tv_support = general->int_tv_support;
                 dev_priv->int_crt_support = general->int_crt_support;
                 dev_priv->lvds_use_ssc = general->enable_ssc;
-
-                if (dev_priv->lvds_use_ssc) {
-                        if (IS_I85X(dev_priv->dev))
-                                dev_priv->lvds_ssc_freq =
-                                        general->ssc_freq ? 66 : 48;
-                        else if (IS_IRONLAKE(dev_priv->dev) || IS_GEN6(dev))
-                                dev_priv->lvds_ssc_freq =
-                                        general->ssc_freq ? 100 : 120;
-                        else
-                                dev_priv->lvds_ssc_freq =
-                                        general->ssc_freq ? 100 : 96;
-                }
+                dev_priv->lvds_ssc_freq =
+                        intel_bios_ssc_frequency(dev, general->ssc_freq);
         }
 }
 
@@ -289,14 +293,6 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
                           struct bdb_header *bdb)
 {
         struct bdb_general_definitions *general;
-        const int crt_bus_map_table[] = {
-                GPIOB,
-                GPIOA,
-                GPIOC,
-                GPIOD,
-                GPIOE,
-                GPIOF,
-        };
 
         general = find_section(bdb, BDB_GENERAL_DEFINITIONS);
         if (general) {
@@ -304,10 +300,8 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
                 if (block_size >= sizeof(*general)) {
                         int bus_pin = general->crt_ddc_gmbus_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];
-                        }
+                        if (bus_pin >= 1 && bus_pin <= 6)
+                                dev_priv->crt_ddc_pin = bus_pin;
                 } else {
                         DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",
                                   block_size);
@@ -317,7 +311,7 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
 
 static void
 parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
-                       struct bdb_header *bdb)
+                          struct bdb_header *bdb)
 {
         struct sdvo_device_mapping *p_mapping;
         struct bdb_general_definitions *p_defs;
@@ -327,7 +321,7 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
 
         p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
         if (!p_defs) {
-                DRM_DEBUG_KMS("No general definition block is found\n");
+                DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n");
                 return;
         }
         /* judge whether the size of child device meets the requirements.
@@ -377,7 +371,16 @@ parse_sdvo_device_mapping(struct drm_i915_private *dev_priv,
                         p_mapping->slave_addr = p_child->slave_addr;
                         p_mapping->dvo_wiring = p_child->dvo_wiring;
                         p_mapping->ddc_pin = p_child->ddc_pin;
+                        p_mapping->i2c_pin = p_child->i2c_pin;
+                        p_mapping->i2c_speed = p_child->i2c_speed;
                         p_mapping->initialized = 1;
+                        DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d, i2c_speed=%d\n",
+                                      p_mapping->dvo_port,
+                                      p_mapping->slave_addr,
+                                      p_mapping->dvo_wiring,
+                                      p_mapping->ddc_pin,
+                                      p_mapping->i2c_pin,
+                                      p_mapping->i2c_speed);
                 } else {
                         DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
                                          "two SDVO device.\n");
@@ -409,14 +412,11 @@ parse_driver_features(struct drm_i915_private *dev_priv,
         if (!driver)
                 return;
 
-        if (driver && SUPPORTS_EDP(dev) &&
-            driver->lvds_config == BDB_DRIVER_FEATURE_EDP) {
-                dev_priv->edp_support = 1;
-        } else {
-                dev_priv->edp_support = 0;
-        }
+        if (SUPPORTS_EDP(dev) &&
+            driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
+                dev_priv->edp.support = 1;
 
-        if (driver && driver->dual_frequency)
+        if (driver->dual_frequency)
                 dev_priv->render_reclock_avail = true;
 }
 
@@ -424,27 +424,78 @@ static void
 parse_edp(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
 {
         struct bdb_edp *edp;
+        struct edp_power_seq *edp_pps;
+        struct edp_link_params *edp_link_params;
 
         edp = find_section(bdb, BDB_EDP);
         if (!edp) {
-                if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp_support) {
+                if (SUPPORTS_EDP(dev_priv->dev) && dev_priv->edp.support) {
                         DRM_DEBUG_KMS("No eDP BDB found but eDP panel "
-                                      "supported, assume 18bpp panel color "
-                                      "depth.\n");
-                        dev_priv->edp_bpp = 18;
+                                      "supported, assume %dbpp panel color "
+                                      "depth.\n",
+                                      dev_priv->edp.bpp);
                 }
                 return;
         }
 
         switch ((edp->color_depth >> (panel_type * 2)) & 3) {
         case EDP_18BPP:
-                dev_priv->edp_bpp = 18;
+                dev_priv->edp.bpp = 18;
                 break;
         case EDP_24BPP:
-                dev_priv->edp_bpp = 24;
+                dev_priv->edp.bpp = 24;
                 break;
         case EDP_30BPP:
-                dev_priv->edp_bpp = 30;
+                dev_priv->edp.bpp = 30;
+                break;
+        }
+
+        /* Get the eDP sequencing and link info */
+        edp_pps = &edp->power_seqs[panel_type];
+        edp_link_params = &edp->link_params[panel_type];
+
+        dev_priv->edp.pps = *edp_pps;
+
+        dev_priv->edp.rate = edp_link_params->rate ? DP_LINK_BW_2_7 :
+                DP_LINK_BW_1_62;
+        switch (edp_link_params->lanes) {
+        case 0:
+                dev_priv->edp.lanes = 1;
+                break;
+        case 1:
+                dev_priv->edp.lanes = 2;
+                break;
+        case 3:
+        default:
+                dev_priv->edp.lanes = 4;
+                break;
+        }
+        switch (edp_link_params->preemphasis) {
+        case 0:
+                dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_0;
+                break;
+        case 1:
+                dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_3_5;
+                break;
+        case 2:
+                dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_6;
+                break;
+        case 3:
+                dev_priv->edp.preemphasis = DP_TRAIN_PRE_EMPHASIS_9_5;
+                break;
+        }
+        switch (edp_link_params->vswing) {
+        case 0:
+                dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_400;
+                break;
+        case 1:
+                dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_600;
+                break;
+        case 2:
+                dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_800;
+                break;
+        case 3:
+                dev_priv->edp.vswing = DP_TRAIN_VOLTAGE_SWING_1200;
                 break;
         }
 }
@@ -460,7 +511,7 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
 
         p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS);
         if (!p_defs) {
-                DRM_DEBUG_KMS("No general definition block is found\n");
+                DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n");
                 return;
         }
         /* judge whether the size of child device meets the requirements.
@@ -513,50 +564,89 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
         }
         return;
 }
+
+static void
+init_vbt_defaults(struct drm_i915_private *dev_priv)
+{
+        struct drm_device *dev = dev_priv->dev;
+
+        dev_priv->crt_ddc_pin = GMBUS_PORT_VGADDC;
+
+        /* LFP panel data */
+        dev_priv->lvds_dither = 1;
+        dev_priv->lvds_vbt = 0;
+
+        /* SDVO panel data */
+        dev_priv->sdvo_lvds_vbt_mode = NULL;
+
+        /* general features */
+        dev_priv->int_tv_support = 1;
+        dev_priv->int_crt_support = 1;
+
+        /* Default to using SSC */
+        dev_priv->lvds_use_ssc = 1;
+        dev_priv->lvds_ssc_freq = intel_bios_ssc_frequency(dev, 1);
+        DRM_DEBUG("Set default to SSC at %dMHz\n", dev_priv->lvds_ssc_freq);
+
+        /* eDP data */
+        dev_priv->edp.bpp = 18;
+}
+
 /**
- * intel_init_bios - initialize VBIOS settings & find VBT
+ * intel_parse_bios - find VBT and initialize settings from the BIOS
  * @dev: DRM device
  *
  * Loads the Video BIOS and checks that the VBT exists.  Sets scratch registers
  * to appropriate values.
  *
- * VBT existence is a sanity check that is relied on by other i830_bios.c code.
- * Note that it would be better to use a BIOS call to get the VBT, as BIOSes may
- * feed an updated VBT back through that, compared to what we'll fetch using
- * this method of groping around in the BIOS data.
- *
  * Returns 0 on success, nonzero on failure.
  */
 bool
-intel_init_bios(struct drm_device *dev)
+intel_parse_bios(struct drm_device *dev)
 {
         struct drm_i915_private *dev_priv = dev->dev_private;
         struct pci_dev *pdev = dev->pdev;
-        struct vbt_header *vbt = NULL;
-        struct bdb_header *bdb;
-        u8 __iomem *bios;
-        size_t size;
-        int i;
-
-        bios = pci_map_rom(pdev, &size);
-        if (!bios)
-                return -1;
-
-        /* Scour memory looking for the VBT signature */
-        for (i = 0; i + 4 < size; i++) {
-                if (!memcmp(bios + i, "$VBT", 4)) {
-                        vbt = (struct vbt_header *)(bios + i);
-                        break;
-                }
+        struct bdb_header *bdb = NULL;
+        u8 __iomem *bios = NULL;
+
+        init_vbt_defaults(dev_priv);
+
+        /* XXX Should this validation be moved to intel_opregion.c? */
+        if (dev_priv->opregion.vbt) {
+                struct vbt_header *vbt = dev_priv->opregion.vbt;
+                if (memcmp(vbt->signature, "$VBT", 4) == 0) {
+                        DRM_DEBUG_DRIVER("Using VBT from OpRegion: %20s\n",
+                                         vbt->signature);
+                        bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
+                } else
+                        dev_priv->opregion.vbt = NULL;
         }
 
-        if (!vbt) {
-                DRM_ERROR("VBT signature missing\n");
-                pci_unmap_rom(pdev, bios);
-                return -1;
-        }
+        if (bdb == NULL) {
+                struct vbt_header *vbt = NULL;
+                size_t size;
+                int i;
+
+                bios = pci_map_rom(pdev, &size);
+                if (!bios)
+                        return -1;
+
+                /* Scour memory looking for the VBT signature */
+                for (i = 0; i + 4 < size; i++) {
+                        if (!memcmp(bios + i, "$VBT", 4)) {
+                                vbt = (struct vbt_header *)(bios + i);
+                                break;
+                        }
+                }
 
-        bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
+                if (!vbt) {
+                        DRM_ERROR("VBT signature missing\n");
+                        pci_unmap_rom(pdev, bios);
+                        return -1;
+                }
+
+                bdb = (struct bdb_header *)(bios + i + vbt->bdb_offset);
+        }
 
         /* Grab useful general definitions */
         parse_general_features(dev_priv, bdb);
@@ -568,7 +658,25 @@ intel_init_bios(struct drm_device *dev)
         parse_driver_features(dev_priv, bdb);
         parse_edp(dev_priv, bdb);
 
-        pci_unmap_rom(pdev, bios);
+        if (bios)
+                pci_unmap_rom(pdev, bios);
 
         return 0;
 }
+
+/* Ensure that vital registers have been initialised, even if the BIOS
+ * is absent or just failing to do its job.
+ */
+void intel_setup_bios(struct drm_device *dev)
+{
+        struct drm_i915_private *dev_priv = dev->dev_private;
+
+         /* Set the Panel Power On/Off timings if uninitialized. */
+        if ((I915_READ(PP_ON_DELAYS) == 0) && (I915_READ(PP_OFF_DELAYS) == 0)) {
+                /* Set T2 to 40ms and T5 to 200ms */
+                I915_WRITE(PP_ON_DELAYS, 0x019007d0);
+
+                /* Set T3 to 35ms and Tx to 200ms */
+                I915_WRITE(PP_OFF_DELAYS, 0x015e07d0);
+        }
+}