linux/drivers/gpu/drm/i915/display/intel_lvds.c

/*
 * Copyright © 2006-2007 Intel Corporation
 * Copyright (c) 2006 Dave Airlie <[email protected]>
 *
 * 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 <[email protected]>
 *      Dave Airlie <[email protected]>
 *      Jesse Barnes <[email protected]>
 */

#include <acpi/button.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/vga_switcheroo.h>

#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>

#include "i915_drv.h"
#include "i915_reg.h"
#include "intel_atomic.h"
#include "intel_backlight.h"
#include "intel_connector.h"
#include "intel_de.h"
#include "intel_display_types.h"
#include "intel_dpll.h"
#include "intel_fdi.h"
#include "intel_gmbus.h"
#include "intel_lvds.h"
#include "intel_lvds_regs.h"
#include "intel_panel.h"
#include "intel_pps_regs.h"

/* Private structure for the integrated LVDS support */
struct intel_lvds_pps { … };

struct intel_lvds_encoder { … };

static struct intel_lvds_encoder *to_lvds_encoder(struct intel_encoder *encoder)
{ … }

bool intel_lvds_port_enabled(struct drm_i915_private *i915,
			     i915_reg_t lvds_reg, enum pipe *pipe)
{ … }

static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
				    enum pipe *pipe)
{ … }

static void intel_lvds_get_config(struct intel_encoder *encoder,
				  struct intel_crtc_state *crtc_state)
{ … }

static void intel_lvds_pps_get_hw_state(struct drm_i915_private *dev_priv,
					struct intel_lvds_pps *pps)
{ … }

static void intel_lvds_pps_init_hw(struct drm_i915_private *dev_priv,
				   struct intel_lvds_pps *pps)
{ … }

static void intel_pre_enable_lvds(struct intel_atomic_state *state,
				  struct intel_encoder *encoder,
				  const struct intel_crtc_state *crtc_state,
				  const struct drm_connector_state *conn_state)
{ … }

/*
 * Sets the power state for the panel.
 */
static void intel_enable_lvds(struct intel_atomic_state *state,
			      struct intel_encoder *encoder,
			      const struct intel_crtc_state *crtc_state,
			      const struct drm_connector_state *conn_state)
{ … }

static void intel_disable_lvds(struct intel_atomic_state *state,
			       struct intel_encoder *encoder,
			       const struct intel_crtc_state *old_crtc_state,
			       const struct drm_connector_state *old_conn_state)
{ … }

static void gmch_disable_lvds(struct intel_atomic_state *state,
			      struct intel_encoder *encoder,
			      const struct intel_crtc_state *old_crtc_state,
			      const struct drm_connector_state *old_conn_state)

{ … }

static void pch_disable_lvds(struct intel_atomic_state *state,
			     struct intel_encoder *encoder,
			     const struct intel_crtc_state *old_crtc_state,
			     const struct drm_connector_state *old_conn_state)
{ … }

static void pch_post_disable_lvds(struct intel_atomic_state *state,
				  struct intel_encoder *encoder,
				  const struct intel_crtc_state *old_crtc_state,
				  const struct drm_connector_state *old_conn_state)
{ … }

static void intel_lvds_shutdown(struct intel_encoder *encoder)
{ … }

static enum drm_mode_status
intel_lvds_mode_valid(struct drm_connector *_connector,
		      struct drm_display_mode *mode)
{ … }

static int intel_lvds_compute_config(struct intel_encoder *encoder,
				     struct intel_crtc_state *crtc_state,
				     struct drm_connector_state *conn_state)
{ … }

/*
 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
 */
static int intel_lvds_get_modes(struct drm_connector *_connector)
{ … }

static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = …;

static const struct drm_connector_funcs intel_lvds_connector_funcs = …;

static const struct drm_encoder_funcs intel_lvds_enc_funcs = …;

static int intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
{ … }

/* These systems claim to have LVDS, but really don't */
static const struct dmi_system_id intel_no_lvds[] = …;

static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
{ … }

static const struct dmi_system_id intel_dual_link_lvds[] = …;

struct intel_encoder *intel_get_lvds_encoder(struct drm_i915_private *i915)
{ … }

bool intel_is_dual_link_lvds(struct drm_i915_private *i915)
{ … }

static bool compute_is_dual_link_lvds(struct intel_lvds_encoder *lvds_encoder)
{ … }

static void intel_lvds_add_properties(struct drm_connector *connector)
{ … }

/**
 * intel_lvds_init - setup LVDS connectors on this device
 * @i915: i915 device
 *
 * Create the connector, register the LVDS DDC bus, and try to figure out what
 * modes we can display on the LVDS panel (if present).
 */
void intel_lvds_init(struct drm_i915_private *i915)
{ … }