path: root/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c

/*
 * Generic DSI Command Mode panel driver
 *
 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */

/* #define DEBUG */

#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/sched/signal.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/of_device.h>
#include <linux/regulator/consumer.h>

#include <video/mipi_display.h>
#include <video/of_display_timing.h>

#include "../dss/omapdss.h"

/* DSI Virtual channel. Hardcoded for now. */
#define TCH 0

#define DCS_READ_NUM_ERRORS	0x05
#define DCS_BRIGHTNESS		0x51
#define DCS_CTRL_DISPLAY	0x53
#define DCS_GET_ID1		0xda
#define DCS_GET_ID2		0xdb
#define DCS_GET_ID3		0xdc

struct panel_drv_data {
	struct omap_dss_device dssdev;

	struct videomode vm;

	struct platform_device *pdev;

	struct mutex lock;

	struct backlight_device *bldev;
	struct backlight_device *extbldev;

	unsigned long	hw_guard_end;	/* next value of jiffies when we can
					 * issue the next sleep in/out command
					 */
	unsigned long	hw_guard_wait;	/* max guard time in jiffies */

	/* panel HW configuration from DT or platform data */
	struct gpio_desc *reset_gpio;
	struct gpio_desc *ext_te_gpio;

	struct regulator *vpnl;
	struct regulator *vddi;

	bool use_dsi_backlight;

	int width_mm;
	int height_mm;

	struct omap_dsi_pin_config pin_config;

	/* runtime variables */
	bool enabled;

	bool te_enabled;

	atomic_t do_update;
	int channel;

	struct delayed_work te_timeout_work;

	bool intro_printed;