| 0,0 → 1,712 |
|---|
| /* |
| * Copyright © 2006 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Authors: |
| * Eric Anholt <eric@anholt.net> |
| * |
| */ |
| #include <drm/drm_dp_helper.h> |
| #include "drmP.h" |
| #include "drm.h" |
| //#include "i915_drm.h" |
| #include "i915_drv.h" |
| #include "intel_bios.h" |
| |
| #include <syscall.h> |
| |
| #define SLAVE_ADDR1 0x70 |
| #define SLAVE_ADDR2 0x72 |
| |
| static int panel_type; |
| |
| static void * |
| find_section(struct bdb_header *bdb, int section_id) |
| { |
| u8 *base = (u8 *)bdb; |
| int index = 0; |
| u16 total, current_size; |
| u8 current_id; |
| |
| /* skip to first section */ |
| index += bdb->header_size; |
| total = bdb->bdb_size; |
| |
| /* walk the sections looking for section_id */ |
| while (index < total) { |
| current_id = *(base + index); |
| index++; |
| current_size = *((u16 *)(base + index)); |
| index += 2; |
| if (current_id == section_id) |
| return base + index; |
| index += current_size; |
| } |
| |
| return NULL; |
| } |
| |
| static u16 |
| get_blocksize(void *p) |
| { |
| u16 *block_ptr, block_size; |
| |
| block_ptr = (u16 *)((char *)p - 2); |
| block_size = *block_ptr; |
| return block_size; |
| } |
| |
| static void |
| fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
| const struct lvds_dvo_timing *dvo_timing) |
| { |
| panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | |
| dvo_timing->hactive_lo; |
| panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + |
| ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); |
| panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + |
| dvo_timing->hsync_pulse_width; |
| panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + |
| ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); |
| |
| panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | |
| dvo_timing->vactive_lo; |
| panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + |
| dvo_timing->vsync_off; |
| panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + |
| dvo_timing->vsync_pulse_width; |
| panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + |
| ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); |
| panel_fixed_mode->clock = dvo_timing->clock * 10; |
| panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; |
| |
| if (dvo_timing->hsync_positive) |
| panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; |
| else |
| panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; |
| |
| if (dvo_timing->vsync_positive) |
| panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; |
| else |
| panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; |
| |
| /* Some VBTs have bogus h/vtotal values */ |
| if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) |
| panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |
| if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) |
| panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; |
| |
| drm_mode_set_name(panel_fixed_mode); |
| } |
| |
| static bool |
| lvds_dvo_timing_equal_size(const struct lvds_dvo_timing *a, |
| const struct lvds_dvo_timing *b) |
| { |
| if (a->hactive_hi != b->hactive_hi || |
| a->hactive_lo != b->hactive_lo) |
| return false; |
| |
| if (a->hsync_off_hi != b->hsync_off_hi || |
| a->hsync_off_lo != b->hsync_off_lo) |
| return false; |
| |
| if (a->hsync_pulse_width != b->hsync_pulse_width) |
| return false; |
| |
| if (a->hblank_hi != b->hblank_hi || |
| a->hblank_lo != b->hblank_lo) |
| return false; |
| |
| if (a->vactive_hi != b->vactive_hi || |
| a->vactive_lo != b->vactive_lo) |
| return false; |
| |
| if (a->vsync_off != b->vsync_off) |
| return false; |
| |
| if (a->vsync_pulse_width != b->vsync_pulse_width) |
| return false; |
| |
| if (a->vblank_hi != b->vblank_hi || |
| a->vblank_lo != b->vblank_lo) |
| return false; |
| |
| return true; |
| } |
| |
| static const struct lvds_dvo_timing * |
| get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
| const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
| int index) |
| { |
| /* |
| * the size of fp_timing varies on the different platform. |
| * So calculate the DVO timing relative offset in LVDS data |
| * entry to get the DVO timing entry |
| */ |
| |
| int lfp_data_size = |
| lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - |
| lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; |
| int dvo_timing_offset = |
| lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - |
| lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; |
| char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; |
| |
| return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); |
| } |
| |
| /* Try to find integrated panel data */ |
| static void |
| parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| const struct bdb_lvds_options *lvds_options; |
| const struct bdb_lvds_lfp_data *lvds_lfp_data; |
| const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; |
| const struct lvds_dvo_timing *panel_dvo_timing; |
| struct drm_display_mode *panel_fixed_mode; |
| int i, downclock; |
| |
| lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
| if (!lvds_options) |
| return; |
| |
| 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); |
| if (!lvds_lfp_data) |
| return; |
| |
| lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
| if (!lvds_lfp_data_ptrs) |
| return; |
| |
| dev_priv->lvds_vbt = 1; |
| |
| panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
| lvds_lfp_data_ptrs, |
| lvds_options->panel_type); |
| |
| panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
| if (!panel_fixed_mode) |
| return; |
| |
| fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
| |
| dev_priv->lfp_lvds_vbt_mode = panel_fixed_mode; |
| |
| DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
| drm_mode_debug_printmodeline(panel_fixed_mode); |
| |
| /* |
| * Iterate over the LVDS panel timing info to find the lowest clock |
| * for the native resolution. |
| */ |
| downclock = panel_dvo_timing->clock; |
| for (i = 0; i < 16; i++) { |
| const struct lvds_dvo_timing *dvo_timing; |
| |
| dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
| lvds_lfp_data_ptrs, |
| i); |
| if (lvds_dvo_timing_equal_size(dvo_timing, panel_dvo_timing) && |
| dvo_timing->clock < downclock) |
| downclock = dvo_timing->clock; |
| } |
| |
| if (downclock < panel_dvo_timing->clock && i915_lvds_downclock) { |
| dev_priv->lvds_downclock_avail = 1; |
| dev_priv->lvds_downclock = downclock * 10; |
| DRM_DEBUG_KMS("LVDS downclock is found in VBT. " |
| "Normal Clock %dKHz, downclock %dKHz\n", |
| panel_fixed_mode->clock, 10*downclock); |
| } |
| } |
| |
| /* Try to find sdvo panel data */ |
| static void |
| parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| struct lvds_dvo_timing *dvo_timing; |
| struct drm_display_mode *panel_fixed_mode; |
| int index; |
| |
| 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; |
| |
| 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 + index); |
| |
| dev_priv->sdvo_lvds_vbt_mode = panel_fixed_mode; |
| |
| 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 |
| parse_general_features(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| struct bdb_general_features *general; |
| |
| 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; |
| dev_priv->lvds_ssc_freq = |
| intel_bios_ssc_frequency(dev, general->ssc_freq); |
| } |
| } |
| |
| static void |
| parse_general_definitions(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| struct bdb_general_definitions *general; |
| |
| 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_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
| 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); |
| } |
| } |
| } |
| |
| static void |
| parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| struct sdvo_device_mapping *p_mapping; |
| struct bdb_general_definitions *p_defs; |
| struct child_device_config *p_child; |
| 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, unable to construct sdvo mapping.\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; |
| 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; |
| } |
| if (p_child->slave_addr != SLAVE_ADDR1 && |
| p_child->slave_addr != SLAVE_ADDR2) { |
| /* |
| * If the slave address is neither 0x70 nor 0x72, |
| * it is not a SDVO device. Skip it. |
| */ |
| continue; |
| } |
| if (p_child->dvo_port != DEVICE_PORT_DVOB && |
| p_child->dvo_port != DEVICE_PORT_DVOC) { |
| /* skip the incorrect SDVO port */ |
| DRM_DEBUG_KMS("Incorrect SDVO port. Skip it \n"); |
| continue; |
| } |
| 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"); |
| p_mapping = &(dev_priv->sdvo_mappings[p_child->dvo_port - 1]); |
| if (!p_mapping->initialized) { |
| p_mapping->dvo_port = p_child->dvo_port; |
| 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"); |
| } |
| if (p_child->slave2_addr) { |
| /* Maybe this is a SDVO device with multiple inputs */ |
| /* And the mapping info is not added */ |
| 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_KMS("No SDVO device info is found in VBT\n"); |
| } |
| return; |
| } |
| |
| static void |
| parse_driver_features(struct drm_i915_private *dev_priv, |
| struct bdb_header *bdb) |
| { |
| struct drm_device *dev = dev_priv->dev; |
| struct bdb_driver_features *driver; |
| |
| driver = find_section(bdb, BDB_DRIVER_FEATURES); |
| if (!driver) |
| return; |
| |
| if (SUPPORTS_EDP(dev) && |
| driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
| dev_priv->edp.support = 1; |
| |
| if (driver->dual_frequency) |
| dev_priv->render_reclock_avail = true; |
| } |
| |
| 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) { |
| DRM_DEBUG_KMS("No eDP BDB found but eDP panel " |
| "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; |
| break; |
| case EDP_24BPP: |
| dev_priv->edp.bpp = 24; |
| break; |
| case EDP_30BPP: |
| 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; |
| } |
| } |
| |
| 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, no devices defined.\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; |
| } |
| |
| 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_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. |
| * |
| * Returns 0 on success, nonzero on failure. |
| */ |
| bool |
| intel_parse_bios(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct pci_dev *pdev = dev->pdev; |
| struct bdb_header *bdb = NULL; |
| u8 __iomem *bios = NULL; |
| |
| ENTER(); |
| |
| 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, "$VBT", 4) == 0) { |
| DRM_DEBUG_DRIVER("Using VBT from OpRegion: %20s\n", |
| vbt->signature); |
| bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset); |
| } else |
| dev_priv->opregion.vbt = NULL; |
| } |
| |
| if (bdb == NULL) { |
| struct vbt_header *vbt = NULL; |
| size_t size; |
| int i; |
| |
| bios = pci_map_rom(pdev, &size); |
| if (!bios) |
| return -1; |
| |
| /* Scour memory looking for the VBT signature */ |
| for (i = 0; i + 4 < size; i++) { |
| if (!memcmp(bios + i, "$VBT", 4)) { |
| vbt = (struct vbt_header *)(bios + i); |
| break; |
| } |
| } |
| |
| 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); |
| parse_general_definitions(dev_priv, bdb); |
| 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); |
| parse_edp(dev_priv, bdb); |
| |
| if (bios) |
| pci_unmap_rom(pdev, bios); |
| |
| LEAVE(); |
| |
| 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); |
| } |
| } |