drm/i915: move modesetting core code under display/

Now that we have a new subdirectory for display code, continue by moving
modesetting core code.

display/intel_frontbuffer.h sticks out like a sore thumb, otherwise this
is, again, a surprisingly clean operation.

v2:
- don't move intel_sideband.[ch] (Ville)
- use tabs for Makefile file lists and sort them

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190613084416.6794-3-jani.nikula@intel.com

1 files changed, 0 insertions, 2253 deletions

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
deleted file mode 100644
index 270719fabbc5..000000000000
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ /dev/null
@@ -1,2253 +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 <drm/drm_dp_helper.h>
-#include <drm/i915_drm.h>
-
-#include "display/intel_gmbus.h"
-
-#include "i915_drv.h"
-
-#define _INTEL_BIOS_PRIVATE
-#include "intel_vbt_defs.h"
-
-/**
- * DOC: Video BIOS Table (VBT)
- *
- * The Video BIOS Table, or VBT, provides platform and board specific
- * configuration information to the driver that is not discoverable or available
- * through other means. The configuration is mostly related to display
- * hardware. The VBT is available via the ACPI OpRegion or, on older systems, in
- * the PCI ROM.
- *
- * The VBT consists of a VBT Header (defined as &struct vbt_header), a BDB
- * Header (&struct bdb_header), and a number of BIOS Data Blocks (BDB) that
- * contain the actual configuration information. The VBT Header, and thus the
- * VBT, begins with "$VBT" signature. The VBT Header contains the offset of the
- * BDB Header. The data blocks are concatenated after the BDB Header. The data
- * blocks have a 1-byte Block ID, 2-byte Block Size, and Block Size bytes of
- * data. (Block 53, the MIPI Sequence Block is an exception.)
- *
- * The driver parses the VBT during load. The relevant information is stored in
- * driver private data for ease of use, and the actual VBT is not read after
- * that.
- */
-
-#define	SLAVE_ADDR1	0x70
-#define	SLAVE_ADDR2	0x72
-
-/* Get BDB block size given a pointer to Block ID. */
-static u32 _get_blocksize(const u8 *block_base)
-{
-	/* The MIPI Sequence Block v3+ has a separate size field. */
-	if (*block_base == BDB_MIPI_SEQUENCE && *(block_base + 3) >= 3)
-		return *((const u32 *)(block_base + 4));
-	else
-		return *((const u16 *)(block_base + 1));
-}
-
-/* Get BDB block size give a pointer to data after Block ID and Block Size. */
-static u32 get_blocksize(const void *block_data)
-{
-	return _get_blocksize(block_data - 3);
-}
-
-static const void *
-find_section(const void *_bdb, enum bdb_block_id section_id)
-{
-	const struct bdb_header *bdb = _bdb;
-	const u8 *base = _bdb;
-	int index = 0;
-	u32 total, current_size;
-	enum bdb_block_id current_id;
-
-	/* skip to first section */
-	index += bdb->header_size;
-	total = bdb->bdb_size;
-
-	/* walk the sections looking for section_id */
-	while (index + 3 < total) {
-		current_id = *(base + index);
-		current_size = _get_blocksize(base + index);
-		index += 3;
-
-		if (index + current_size > total)
-			return NULL;
-
-		if (current_id == section_id)
-			return base + index;
-
-		index += current_size;
-	}
-
-	return NULL;
-}
-
-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_hi << 8) |
-			dvo_timing->hsync_pulse_width_lo);
-	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_hi << 4) | dvo_timing->vsync_off_lo);
-	panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start +
-		((dvo_timing->vsync_pulse_width_hi << 4) |
-			dvo_timing->vsync_pulse_width_lo);
-	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;
-
-	panel_fixed_mode->width_mm = (dvo_timing->himage_hi << 8) |
-		dvo_timing->himage_lo;
-	panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) |
-		dvo_timing->vimage_lo;
-
-	/* 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 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);
-}
-
-/* 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,
-		     const 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 panel_type;
-	int drrs_mode;
-	int ret;
-
-	lvds_options = find_section(bdb, BDB_LVDS_OPTIONS);
-	if (!lvds_options)
-		return;
-
-	dev_priv->vbt.lvds_dither = lvds_options->pixel_dither;
-
-	ret = intel_opregion_get_panel_type(dev_priv);
-	if (ret >= 0) {
-		WARN_ON(ret > 0xf);
-		panel_type = ret;
-		DRM_DEBUG_KMS("Panel type: %d (OpRegion)\n", panel_type);
-	} else {
-		if (lvds_options->panel_type > 0xf) {
-			DRM_DEBUG_KMS("Invalid VBT panel type 0x%x\n",
-				      lvds_options->panel_type);
-			return;
-		}
-		panel_type = lvds_options->panel_type;
-		DRM_DEBUG_KMS("Panel type: %d (VBT)\n", panel_type);
-	}
-
-	dev_priv->vbt.panel_type = panel_type;
-
-	drrs_mode = (lvds_options->dps_panel_type_bits
-				>> (panel_type * 2)) & MODE_MASK;
-	/*
-	 * VBT has static DRRS = 0 and seamless DRRS = 2.
-	 * The below piece of code is required to adjust vbt.drrs_type
-	 * to match the enum drrs_support_type.
-	 */
-	switch (drrs_mode) {
-	case 0:
-		dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT;
-		DRM_DEBUG_KMS("DRRS supported mode is static\n");
-		break;
-	case 2:
-		dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT;
-		DRM_DEBUG_KMS("DRRS supported mode is seamless\n");
-		break;
-	default:
-		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
-		DRM_DEBUG_KMS("DRRS not supported (VBT input)\n");
-		break;
-	}
-
-	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;
-
-	panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data,
-					       lvds_lfp_data_ptrs,
-					       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->vbt.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);
-
-	fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data,
-				       lvds_lfp_data_ptrs,
-				       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->vbt.bios_lvds_val = fp_timing->lvds_reg_val;
-			DRM_DEBUG_KMS("VBT initial LVDS value %x\n",
-				      dev_priv->vbt.bios_lvds_val);
-		}
-	}
-}
-
-static void
-parse_lfp_backlight(struct drm_i915_private *dev_priv,
-		    const struct bdb_header *bdb)
-{
-	const struct bdb_lfp_backlight_data *backlight_data;
-	const struct lfp_backlight_data_entry *entry;
-	int panel_type = dev_priv->vbt.panel_type;
-
-	backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT);
-	if (!backlight_data)
-		return;
-
-	if (backlight_data->entry_size != sizeof(backlight_data->data[0])) {
-		DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n",
-			      backlight_data->entry_size);
-		return;
-	}
-
-	entry = &backlight_data->data[panel_type];
-
-	dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM;
-	if (!dev_priv->vbt.backlight.present) {
-		DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n",
-			      entry->type);
-		return;
-	}
-
-	dev_priv->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI;
-	if (bdb->version >= 191 &&
-	    get_blocksize(backlight_data) >= sizeof(*backlight_data)) {
-		const struct lfp_backlight_control_method *method;
-
-		method = &backlight_data->backlight_control[panel_type];
-		dev_priv->vbt.backlight.type = method->type;
-		dev_priv->vbt.backlight.controller = method->controller;
-	}
-
-	dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz;
-	dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm;
-	dev_priv->vbt.backlight.min_brightness = entry->min_brightness;
-	DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, "
-		      "active %s, min brightness %u, level %u, controller %u\n",
-		      dev_priv->vbt.backlight.pwm_freq_hz,
-		      dev_priv->vbt.backlight.active_low_pwm ? "low" : "high",
-		      dev_priv->vbt.backlight.min_brightness,
-		      backlight_data->level[panel_type],
-		      dev_priv->vbt.backlight.controller);
-}
-
-/* Try to find sdvo panel data */
-static void
-parse_sdvo_panel_data(struct drm_i915_private *dev_priv,
-		      const struct bdb_header *bdb)
-{
-	const struct bdb_sdvo_panel_dtds *dtds;
-	struct drm_display_mode *panel_fixed_mode;
-	int index;
-
-	index = i915_modparams.vbt_sdvo_panel_type;
-	if (index == -2) {
-		DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n");
-		return;
-	}
-
-	if (index == -1) {
-		const 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;
-	}
-
-	dtds = find_section(bdb, BDB_SDVO_PANEL_DTDS);
-	if (!dtds)
-		return;
-
-	panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL);
-	if (!panel_fixed_mode)
-		return;
-
-	fill_detail_timing_data(panel_fixed_mode, &dtds->dtds[index]);
-
-	dev_priv->vbt.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_i915_private *dev_priv,
-				    bool alternate)
-{
-	switch (INTEL_GEN(dev_priv)) {
-	case 2:
-		return alternate ? 66667 : 48000;
-	case 3:
-	case 4:
-		return alternate ? 100000 : 96000;
-	default:
-		return alternate ? 100000 : 120000;
-	}
-}
-
-static void
-parse_general_features(struct drm_i915_private *dev_priv,
-		       const struct bdb_header *bdb)
-{
-	const struct bdb_general_features *general;
-
-	general = find_section(bdb, BDB_GENERAL_FEATURES);
-	if (!general)
-		return;
-
-	dev_priv->vbt.int_tv_support = general->int_tv_support;
-	/* int_crt_support can't be trusted on earlier platforms */
-	if (bdb->version >= 155 &&
-	    (HAS_DDI(dev_priv) || IS_VALLEYVIEW(dev_priv)))
-		dev_priv->vbt.int_crt_support = general->int_crt_support;
-	dev_priv->vbt.lvds_use_ssc = general->enable_ssc;
-	dev_priv->vbt.lvds_ssc_freq =
-		intel_bios_ssc_frequency(dev_priv, general->ssc_freq);
-	dev_priv->vbt.display_clock_mode = general->display_clock_mode;
-	dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted;
-	if (bdb->version >= 181) {
-		dev_priv->vbt.orientation = general->rotate_180 ?
-			DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP :
-			DRM_MODE_PANEL_ORIENTATION_NORMAL;
-	} else {
-		dev_priv->vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
-	}
-	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->vbt.int_tv_support,
-		      dev_priv->vbt.int_crt_support,
-		      dev_priv->vbt.lvds_use_ssc,
-		      dev_priv->vbt.lvds_ssc_freq,
-		      dev_priv->vbt.display_clock_mode,
-		      dev_priv->vbt.fdi_rx_polarity_inverted);
-}
-
-static const struct child_device_config *
-child_device_ptr(const struct bdb_general_definitions *defs, int i)
-{
-	return (const void *) &defs->devices[i * defs->child_dev_size];
-}
-
-static void
-parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, u8 bdb_version)
-{
-	struct sdvo_device_mapping *mapping;
-	const struct child_device_config *child;
-	int i, count = 0;
-
-	/*
-	 * Only parse SDVO mappings on gens that could have SDVO. This isn't
-	 * accurate and doesn't have to be, as long as it's not too strict.
-	 */
-	if (!IS_GEN_RANGE(dev_priv, 3, 7)) {
-		DRM_DEBUG_KMS("Skipping SDVO device mapping\n");
-		return;
-	}
-
-	for (i = 0, count = 0; i < dev_priv->vbt.child_dev_num; i++) {
-		child = dev_priv->vbt.child_dev + i;
-
-		if (child->slave_addr != SLAVE_ADDR1 &&
-		    child->slave_addr != SLAVE_ADDR2) {
-			/*
-			 * If the slave address is neither 0x70 nor 0x72,
-			 * it is not a SDVO device. Skip it.
-			 */
-			continue;
-		}
-		if (child->dvo_port != DEVICE_PORT_DVOB &&
-		    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",
-			      child->slave_addr,
-			      (child->dvo_port == DEVICE_PORT_DVOB) ?
-			      "SDVOB" : "SDVOC");
-		mapping = &dev_priv->vbt.sdvo_mappings[child->dvo_port - 1];
-		if (!mapping->initialized) {
-			mapping->dvo_port = child->dvo_port;
-			mapping->slave_addr = child->slave_addr;
-			mapping->dvo_wiring = child->dvo_wiring;
-			mapping->ddc_pin = child->ddc_pin;
-			mapping->i2c_pin = child->i2c_pin;
-			mapping->initialized = 1;
-			DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n",
-				      mapping->dvo_port,
-				      mapping->slave_addr,
-				      mapping->dvo_wiring,
-				      mapping->ddc_pin,
-				      mapping->i2c_pin);
-		} else {
-			DRM_DEBUG_KMS("Maybe one SDVO port is shared by "
-					 "two SDVO device.\n");
-		}
-		if (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");
-	}
-}
-
-static void
-parse_driver_features(struct drm_i915_private *dev_priv,
-		      const struct bdb_header *bdb)
-{
-	const struct bdb_driver_features *driver;
-
-	driver = find_section(bdb, BDB_DRIVER_FEATURES);
-	if (!driver)
-		return;
-
-	if (INTEL_GEN(dev_priv) >= 5) {
-		/*
-		 * Note that we consider BDB_DRIVER_FEATURE_INT_SDVO_LVDS
-		 * to mean "eDP". The VBT spec doesn't agree with that
-		 * interpretation, but real world VBTs seem to.
-		 */
-		if (driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS)
-			dev_priv->vbt.int_lvds_support = 0;
-	} else {
-		/*
-		 * FIXME it's not clear which BDB version has the LVDS config
-		 * bits defined. Revision history in the VBT spec says:
-		 * "0.92 | Add two definitions for VBT value of LVDS Active
-		 *  Config (00b and 11b values defined) | 06/13/2005"
-		 * but does not the specify the BDB version.
-		 *
-		 * So far version 134 (on i945gm) is the oldest VBT observed
-		 * in the wild with the bits correctly populated. Version
-		 * 108 (on i85x) does not have the bits correctly populated.
-		 */
-		if (bdb->version >= 134 &&
-		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_LVDS &&
-		    driver->lvds_config != BDB_DRIVER_FEATURE_INT_SDVO_LVDS)
-			dev_priv->vbt.int_lvds_support = 0;
-	}
-
-	DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled);
-	/*
-	 * If DRRS is not supported, drrs_type has to be set to 0.
-	 * This is because, VBT is configured in such a way that
-	 * static DRRS is 0 and DRRS not supported is represented by
-	 * driver->drrs_enabled=false
-	 */
-	if (!driver->drrs_enabled)
-		dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED;
-	dev_priv->vbt.psr.enable = driver->psr_enabled;
-}
-
-static void
-parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
-{
-	const struct bdb_edp *edp;
-	const struct edp_power_seq *edp_pps;
-	const struct edp_fast_link_params *edp_link_params;
-	int panel_type = dev_priv->vbt.panel_type;
-
-	edp = find_section(bdb, BDB_EDP);
-	if (!edp)
-		return;
-
-	switch ((edp->color_depth >> (panel_type * 2)) & 3) {
-	case EDP_18BPP:
-		dev_priv->vbt.edp.bpp = 18;
-		break;
-	case EDP_24BPP:
-		dev_priv->vbt.edp.bpp = 24;
-		break;
-	case EDP_30BPP:
-		dev_priv->vbt.edp.bpp = 30;
-		break;
-	}
-
-	/* Get the eDP sequencing and link info */
-	edp_pps = &edp->power_seqs[panel_type];
-	edp_link_params = &edp->fast_link_params[panel_type];
-
-	dev_priv->vbt.edp.pps = *edp_pps;
-
-	switch (edp_link_params->rate) {
-	case EDP_RATE_1_62:
-		dev_priv->vbt.edp.rate = DP_LINK_BW_1_62;
-		break;
-	case EDP_RATE_2_7:
-		dev_priv->vbt.edp.rate = DP_LINK_BW_2_7;
-		break;
-	default:
-		DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n",
-			      edp_link_params->rate);
-		break;
-	}
-
-	switch (edp_link_params->lanes) {
-	case EDP_LANE_1:
-		dev_priv->vbt.edp.lanes = 1;
-		break;
-	case EDP_LANE_2:
-		dev_priv->vbt.edp.lanes = 2;
-		break;
-	case EDP_LANE_4:
-		dev_priv->vbt.edp.lanes = 4;
-		break;
-	default:
-		DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n",
-			      edp_link_params->lanes);
-		break;
-	}
-
-	switch (edp_link_params->preemphasis) {
-	case EDP_PREEMPHASIS_NONE:
-		dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0;
-		break;
-	case EDP_PREEMPHASIS_3_5dB:
-		dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1;
-		break;
-	case EDP_PREEMPHASIS_6dB:
-		dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2;
-		break;
-	case EDP_PREEMPHASIS_9_5dB:
-		dev_priv->vbt.edp.preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3;
-		break;
-	default:
-		DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n",
-			      edp_link_params->preemphasis);
-		break;
-	}
-
-	switch (edp_link_params->vswing) {
-	case EDP_VSWING_0_4V:
-		dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0;
-		break;
-	case EDP_VSWING_0_6V:
-		dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1;
-		break;
-	case EDP_VSWING_0_8V:
-		dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2;
-		break;
-	case EDP_VSWING_1_2V:
-		dev_priv->vbt.edp.vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3;
-		break;
-	default:
-		DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n",
-			      edp_link_params->vswing);
-		break;
-	}
-
-	if (bdb->version >= 173) {
-		u8 vswing;
-
-		/* Don't read from VBT if module parameter has valid value*/
-		if (i915_modparams.edp_vswing) {
-			dev_priv->vbt.edp.low_vswing =
-				i915_modparams.edp_vswing == 1;
-		} else {
-			vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF;
-			dev_priv->vbt.edp.low_vswing = vswing == 0;
-		}
-	}
-}
-
-static void
-parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb)
-{
-	const struct bdb_psr *psr;
-	const struct psr_table *psr_table;
-	int panel_type = dev_priv->vbt.panel_type;
-
-	psr = find_section(bdb, BDB_PSR);
-	if (!psr) {
-		DRM_DEBUG_KMS("No PSR BDB found.\n");
-		return;
-	}
-
-	psr_table = &psr->psr_table[panel_type];
-
-	dev_priv->vbt.psr.full_link = psr_table->full_link;
-	dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup;
-
-	/* Allowed VBT values goes from 0 to 15 */
-	dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
-		psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
-
-	switch (psr_table->lines_to_wait) {
-	case 0:
-		dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT;
-		break;
-	case 1:
-		dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT;
-		break;
-	case 2:
-		dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT;
-		break;
-	case 3:
-		dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT;
-		break;
-	default:
-		DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n",
-			      psr_table->lines_to_wait);
-		break;
-	}
-
-	/*
-	 * New psr options 0=500us, 1=100us, 2=2500us, 3=0us
-	 * Old decimal value is wake up time in multiples of 100 us.
-	 */
-	if (bdb->version >= 205 &&
-	    (IS_GEN9_BC(dev_priv) || IS_GEMINILAKE(dev_priv) ||
-	     INTEL_GEN(dev_priv) >= 10)) {
-		switch (psr_table->tp1_wakeup_time) {
-		case 0:
-			dev_priv->vbt.psr.tp1_wakeup_time_us = 500;
-			break;
-		case 1:
-			dev_priv->vbt.psr.tp1_wakeup_time_us = 100;
-			break;
-		case 3:
-			dev_priv->vbt.psr.tp1_wakeup_time_us = 0;
-			break;
-		default:
-			DRM_DEBUG_KMS("VBT tp1 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
-					psr_table->tp1_wakeup_time);
-			/* fallthrough */
-		case 2:
-			dev_priv->vbt.psr.tp1_wakeup_time_us = 2500;
-			break;
-		}
-
-		switch (psr_table->tp2_tp3_wakeup_time) {
-		case 0:
-			dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 500;
-			break;
-		case 1:
-			dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 100;
-			break;
-		case 3:
-			dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 0;
-			break;
-		default:
-			DRM_DEBUG_KMS("VBT tp2_tp3 wakeup time value %d is outside range[0-3], defaulting to max value 2500us\n",
-					psr_table->tp2_tp3_wakeup_time);
-			/* fallthrough */
-		case 2:
-			dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = 2500;
-		break;
-		}
-	} else {
-		dev_priv->vbt.psr.tp1_wakeup_time_us = psr_table->tp1_wakeup_time * 100;
-		dev_priv->vbt.psr.tp2_tp3_wakeup_time_us = psr_table->tp2_tp3_wakeup_time * 100;
-	}
-
-	if (bdb->version >= 226) {
-		u32 wakeup_time = psr_table->psr2_tp2_tp3_wakeup_time;
-
-		wakeup_time = (wakeup_time >> (2 * panel_type)) & 0x3;
-		switch (wakeup_time) {
-		case 0:
-			wakeup_time = 500;
-			break;
-		case 1:
-			wakeup_time = 100;
-			break;
-		case 3:
-			wakeup_time = 50;
-			break;
-		default:
-		case 2:
-			wakeup_time = 2500;
-			break;
-		}
-		dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = wakeup_time;
-	} else {
-		/* Reusing PSR1 wakeup time for PSR2 in older VBTs */
-		dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us = dev_priv->vbt.psr.tp2_tp3_wakeup_time_us;
-	}
-}
-
-static void parse_dsi_backlight_ports(struct drm_i915_private *dev_priv,
-				      u16 version, enum port port)
-{
-	if (!dev_priv->vbt.dsi.config->dual_link || version < 197) {
-		dev_priv->vbt.dsi.bl_ports = BIT(port);
-		if (dev_priv->vbt.dsi.config->cabc_supported)
-			dev_priv->vbt.dsi.cabc_ports = BIT(port);
-
-		return;
-	}
-
-	switch (dev_priv->vbt.dsi.config->dl_dcs_backlight_ports) {
-	case DL_DCS_PORT_A:
-		dev_priv->vbt.dsi.bl_ports = BIT(PORT_A);
-		break;
-	case DL_DCS_PORT_C:
-		dev_priv->vbt.dsi.bl_ports = BIT(PORT_C);
-		break;
-	default:
-	case DL_DCS_PORT_A_AND_C:
-		dev_priv->vbt.dsi.bl_ports = BIT(PORT_A) | BIT(PORT_C);
-		break;
-	}
-
-	if (!dev_priv->vbt.dsi.config->cabc_supported)
-		return;
-
-	switch (dev_priv->vbt.dsi.config->dl_dcs_cabc_ports) {
-	case DL_DCS_PORT_A:
-		dev_priv->vbt.dsi.cabc_ports = BIT(PORT_A);
-		break;
-	case DL_DCS_PORT_C:
-		dev_priv->vbt.dsi.cabc_ports = BIT(PORT_C);
-		break;
-	default:
-	case DL_DCS_PORT_A_AND_C:
-		dev_priv->vbt.dsi.cabc_ports =
-					BIT(PORT_A) | BIT(PORT_C);
-		break;
-	}
-}
-
-static void
-parse_mipi_config(struct drm_i915_private *dev_priv,
-		  const struct bdb_header *bdb)
-{
-	const struct bdb_mipi_config *start;
-	const struct mipi_config *config;
-	const struct mipi_pps_data *pps;
-	int panel_type = dev_priv->vbt.panel_type;
-	enum port port;
-
-	/* parse MIPI blocks only if LFP type is MIPI */
-	if (!intel_bios_is_dsi_present(dev_priv, &port))
-		return;
-
-	/* Initialize this to undefined indicating no generic MIPI support */
-	dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID;
-
-	/* Block #40 is already parsed and panel_fixed_mode is
-	 * stored in dev_priv->lfp_lvds_vbt_mode
-	 * resuse this when needed
-	 */
-
-	/* Parse #52 for panel index used from panel_type already
-	 * parsed
-	 */
-	start = find_section(bdb, BDB_MIPI_CONFIG);
-	if (!start) {
-		DRM_DEBUG_KMS("No MIPI config BDB found");
-		return;
-	}
-
-	DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n",
-								panel_type);
-
-	/*
-	 * get hold of the correct configuration block and pps data as per
-	 * the panel_type as index
-	 */
-	config = &start->config[panel_type];
-	pps = &start->pps[panel_type];
-
-	/* store as of now full data. Trim when we realise all is not needed */
-	dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL);
-	if (!dev_priv->vbt.dsi.config)
-		return;
-
-	dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL);
-	if (!dev_priv->vbt.dsi.pps) {
-		kfree(dev_priv->vbt.dsi.config);
-		return;
-	}
-
-	parse_dsi_backlight_ports(dev_priv, bdb->version, port);
-
-	/* FIXME is the 90 vs. 270 correct? */
-	switch (config->rotation) {
-	case ENABLE_ROTATION_0:
-		/*
-		 * Most (all?) VBTs claim 0 degrees despite having
-		 * an upside down panel, thus we do not trust this.
-		 */
-		dev_priv->vbt.dsi.orientation =
-			DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
-		break;
-	case ENABLE_ROTATION_90:
-		dev_priv->vbt.dsi.orientation =
-			DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
-		break;
-	case ENABLE_ROTATION_180:
-		dev_priv->vbt.dsi.orientation =
-			DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
-		break;
-	case ENABLE_ROTATION_270:
-		dev_priv->vbt.dsi.orientation =
-			DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
-		break;
-	}
-
-	/* We have mandatory mipi config blocks. Initialize as generic panel */
-	dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID;
-}
-
-/* Find the sequence block and size for the given panel. */
-static const u8 *
-find_panel_sequence_block(const struct bdb_mipi_sequence *sequence,
-			  u16 panel_id, u32 *seq_size)
-{
-	u32 total = get_blocksize(sequence);
-	const u8 *data = &sequence->data[0];
-	u8 current_id;
-	u32 current_size;
-	int header_size = sequence->version >= 3 ? 5 : 3;
-	int index = 0;
-	int i;
-
-	/* skip new block size */
-	if (sequence->version >= 3)
-		data += 4;
-
-	for (i = 0; i < MAX_MIPI_CONFIGURATIONS && index < total; i++) {
-		if (index + header_size > total) {
-			DRM_ERROR("Invalid sequence block (header)\n");
-			return NULL;
-		}
-
-		current_id = *(data + index);
-		if (sequence->version >= 3)
-			current_size = *((const u32 *)(data + index + 1));
-		else
-			current_size = *((const u16 *)(data + index + 1));
-
-		index += header_size;
-
-		if (index + current_size > total) {
-			DRM_ERROR("Invalid sequence block\n");
-			return NULL;
-		}
-
-		if (current_id == panel_id) {
-			*seq_size = current_size;
-			return data + index;
-		}
-
-		index += current_size;
-	}
-
-	DRM_ERROR("Sequence block detected but no valid configuration\n");
-
-	return NULL;
-}
-
-static int goto_next_sequence(const u8 *data, int index, int total)
-{
-	u16 len;
-
-	/* Skip Sequence Byte. */
-	for (index = index + 1; index < total; index += len) {
-		u8 operation_byte = *(data + index);
-		index++;
-
-		switch (operation_byte) {
-		case MIPI_SEQ_ELEM_END:
-			return index;
-		case MIPI_SEQ_ELEM_SEND_PKT:
-			if (index + 4 > total)
-				return 0;
-
-			len = *((const u16 *)(data + index + 2)) + 4;
-			break;
-		case MIPI_SEQ_ELEM_DELAY:
-			len = 4;
-			break;
-		case MIPI_SEQ_ELEM_GPIO:
-			len = 2;
-			break;
-		case MIPI_SEQ_ELEM_I2C:
-			if (index + 7 > total)
-				return 0;
-			len = *(data + index + 6) + 7;
-			break;
-		default:
-			DRM_ERROR("Unknown operation byte\n");
-			return 0;
-		}
-	}
-
-	return 0;
-}
-
-static int goto_next_sequence_v3(const u8 *data, int index, int total)
-{
-	int seq_end;
-	u16 len;
-	u32 size_of_sequence;
-
-	/*
-	 * Could skip sequence based on Size of Sequence alone, but also do some
-	 * checking on the structure.
-	 */
-	if (total < 5) {
-		DRM_ERROR("Too small sequence size\n");
-		return 0;
-	}
-
-	/* Skip Sequence Byte. */
-	index++;
-
-	/*
-	 * Size of Sequence. Excludes the Sequence Byte and the size itself,
-	 * includes MIPI_SEQ_ELEM_END byte, excludes the final MIPI_SEQ_END
-	 * byte.
-	 */
-	size_of_sequence = *((const u32 *)(data + index));
-	index += 4;
-
-	seq_end = index + size_of_sequence;
-	if (seq_end > total) {
-		DRM_ERROR("Invalid sequence size\n");
-		return 0;
-	}
-
-	for (; index < total; index += len) {
-		u8 operation_byte = *(data + index);
-		index++;
-
-		if (operation_byte == MIPI_SEQ_ELEM_END) {
-			if (index != seq_end) {
-				DRM_ERROR("Invalid element structure\n");
-				return 0;
-			}
-			return index;
-		}
-
-		len = *(data + index);
-		index++;
-
-		/*
-		 * FIXME: Would be nice to check elements like for v1/v2 in
-		 * goto_next_sequence() above.
-		 */
-		switch (operation_byte) {
-		case MIPI_SEQ_ELEM_SEND_PKT:
-		case MIPI_SEQ_ELEM_DELAY:
-		case MIPI_SEQ_ELEM_GPIO:
-		case MIPI_SEQ_ELEM_I2C:
-		case MIPI_SEQ_ELEM_SPI:
-		case MIPI_SEQ_ELEM_PMIC:
-			break;
-		default:
-			DRM_ERROR("Unknown operation byte %u\n",
-				  operation_byte);
-			break;
-		}
-	}
-
-	return 0;
-}
-
-/*
- * Get len of pre-fixed deassert fragment from a v1 init OTP sequence,
- * skip all delay + gpio operands and stop at the first DSI packet op.
- */
-static int get_init_otp_deassert_fragment_len(struct drm_i915_private *dev_priv)
-{
-	const u8 *data = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
-	int index, len;
-
-	if (WARN_ON(!data || dev_priv->vbt.dsi.seq_version != 1))
-		return 0;
-
-	/* index = 1 to skip sequence byte