1 files changed, 0 insertions, 790 deletions

diff --git a/sys/dev/drm2/i915/intel_bios.c b/sys/dev/drm2/i915/intel_bios.c
deleted file mode 100644
index f528766d21d95..0000000000000
--- a/sys/dev/drm2/i915/intel_bios.c
+++ /dev/null
@@ -1,790 +0,0 @@
-/*
- * 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 <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <dev/drm2/drmP.h>
-#include <dev/drm2/drm_dp_helper.h>
-#include <dev/drm2/i915/i915_drm.h>
-#include <dev/drm2/i915/i915_drv.h>
-#include <dev/drm2/i915/intel_bios.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;
-	const char *entry = (const char *)lvds_lfp_data->data + lfp_data_size * index;
-
-	return (const struct lvds_dvo_timing *)(entry + dvo_timing_offset);
-}
-
-/* get lvds_fp_timing entry
- * this function may return NULL if the corresponding entry is invalid
- */
-static const struct lvds_fp_timing *
-get_lvds_fp_timing(const struct bdb_header *bdb,
-		   const struct bdb_lvds_lfp_data *data,
-		   const struct bdb_lvds_lfp_data_ptrs *ptrs,
-		   int index)
-{
-	size_t data_ofs = (const u8 *)data - (const u8 *)bdb;
-	u16 data_size = ((const u16 *)data)[-1]; /* stored in header */
-	size_t ofs;
-
-	if (index >= ARRAY_SIZE(ptrs->ptr))
-		return NULL;
-	ofs = ptrs->ptr[index].fp_timing_offset;
-	if (ofs < data_ofs ||
-	    ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size)
-		return NULL;
-	return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
-}
-
-/* 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;
-	const struct lvds_fp_timing *fp_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 = malloc(sizeof(*panel_fixed_mode), DRM_MEM_KMS, M_WAITOK | M_ZERO);
-	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);
-	}
-
-	fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
-				       lvds_lfp_data_ptrs,
-				       lvds_options->panel_type);
-	if (fp_timing) {
-		/* check the resolution, just to be sure */
-		if (fp_timing->x_res == panel_fixed_mode->hdisplay &&
-		    fp_timing->y_res == panel_fixed_mode->vdisplay) {
-			dev_priv->bios_lvds_val = fp_timing->lvds_reg_val;
-			DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
-				      dev_priv->bios_lvds_val);
-		}
-	}
-}
-
-/* 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 == -2) {
-		DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
-		return;
-	}
-
-	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 = malloc(sizeof(*panel_fixed_mode), DRM_MEM_KMS, M_WAITOK | M_ZERO);
-	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);
-		dev_priv->display_clock_mode = general->display_clock_mode;
-		dev_priv->fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
-		DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n",
-			      dev_priv->int_tv_support,
-			      dev_priv->int_crt_support,
-			      dev_priv->lvds_use_ssc,
-			      dev_priv->lvds_ssc_freq,
-			      dev_priv->display_clock_mode,
-			      dev_priv->fdi_rx_polarity_inverted);
-	}
-}
-
-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 (intel_gmbus_is_port_valid(bus_pin))
-				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->initialized = 1;
-			DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
-				      p_mapping->dvo_port,
-				      p_mapping->slave_addr,
-				      p_mapping->dvo_wiring,
-				      p_mapping->ddc_pin,
-				      p_mapping->i2c_pin);
-		} 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.\n");
-		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 = malloc(count * sizeof(*p_child), DRM_MEM_KMS, M_WAITOK | M_ZERO);
-	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_KMS("Set default to SSC at %dMHz\n", dev_priv->lvds_ssc_freq);
-}
-
-static int __init intel_no_opregion_vbt_callback(const struct dmi_system_id *id)
-{
-	DRM_DEBUG_KMS("Falling back to manually reading VBT from "
-		      "VBIOS ROM for %s\n",
-		      id->ident);
-	return 1;
-}
-
-static const struct dmi_system_id intel_no_opregion_vbt[] = {
-	{
-		.callback = intel_no_opregion_vbt_callback,
-		.ident = "ThinkCentre A57",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"),
-		},
-	},
-	{ }
-};
-
-/**
- * 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.
- */
-int
-intel_parse_bios(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	device_t vga_dev = device_get_parent(dev->dev);;
-	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 (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) {
-		struct vbt_header *vbt = dev_priv->opregion.vbt;
-		if (memcmp(vbt->signature, "$VBT", 4) == 0) {
-			DRM_DEBUG_KMS("Using VBT from OpRegion: %20s\n",
-					 vbt->signature);
-			bdb = (struct bdb_header *)((char *)vbt + vbt->bdb_offset);
-		} else
-			dev_priv->opregion.vbt = NULL;
-	}
-
-	if (bdb == NULL) {
-		struct vbt_header *vbt = NULL;
-		size_t size;
-		int i;
-
-		bios = vga_pci_map_bios(vga_dev, &size);
-		if (!bios)
-			return -1;
-
-		/* Scour memory looking for the VBT signature */
-		for (i = 0; i + 4 < size; i++) {
-			if (!memcmp(bios + i, "$VBT", 4)) {
-				vbt = (struct vbt_header *)(bios + i);
-				break;
-			}
-		}
-
-		if (!vbt) {
-			DRM_DEBUG_DRIVER("VBT signature missing\n");
-			vga_pci_unmap_bios(vga_dev, 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)
-		vga_pci_unmap_bios(vga_dev, bios);
-
-	return 0;
-}
-
-/*
- * NOTE Linux<->FreeBSD:
- * Apparently, Linux doesn't free those pointers.
- * TODO: Report that upstream.
- */
-void
-intel_free_parsed_bios_data(struct drm_device *dev)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-
-	free(dev_priv->lfp_lvds_vbt_mode, DRM_MEM_KMS);
-	free(dev_priv->sdvo_lvds_vbt_mode, DRM_MEM_KMS);
-	free(dev_priv->child_dev, DRM_MEM_KMS);
-
-	dev_priv->lfp_lvds_vbt_mode = NULL;
-	dev_priv->sdvo_lvds_vbt_mode = NULL;
-	dev_priv->child_dev = NULL;
-}
-
-/* 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 (!HAS_PCH_SPLIT(dev) &&
-	    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);
-	}
-}