linux/drivers/gpu/drm/i915/intel_dsi.h

/*
 * Copyright © 2013 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.
 */

#ifndef _INTEL_DSI_H
#define _INTEL_DSI_H

#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include "intel_drv.h"

/* Dual Link support */
#define DSI_DUAL_LINK_NONE		0
#define DSI_DUAL_LINK_FRONT_BACK	1
#define DSI_DUAL_LINK_PIXEL_ALT		2

struct intel_dsi_device {
	unsigned int panel_id;
	const char *name;
	const struct intel_dsi_dev_ops *dev_ops;
	void *dev_priv;
};

struct intel_dsi_dev_ops {
	bool (*init)(struct intel_dsi_device *dsi);

	void (*panel_reset)(struct intel_dsi_device *dsi);

	void (*disable_panel_power)(struct intel_dsi_device *dsi);

	/* one time programmable commands if needed */
	void (*send_otp_cmds)(struct intel_dsi_device *dsi);

	/* This callback must be able to assume DSI commands can be sent */
	void (*enable)(struct intel_dsi_device *dsi);

	/* This callback must be able to assume DSI commands can be sent */
	void (*disable)(struct intel_dsi_device *dsi);

	int (*mode_valid)(struct intel_dsi_device *dsi,
			  struct drm_display_mode *mode);

	bool (*mode_fixup)(struct intel_dsi_device *dsi,
			   const struct drm_display_mode *mode,
			   struct drm_display_mode *adjusted_mode);

	void (*mode_set)(struct intel_dsi_device *dsi,
			 struct drm_display_mode *mode,
			 struct drm_display_mode *adjusted_mode);

	enum drm_connector_status (*detect)(struct intel_dsi_device *dsi);

	bool (*get_hw_state)(struct intel_dsi_device *dev);

	struct drm_display_mode *(*get_modes)(struct intel_dsi_device *dsi);

	void (*destroy) (struct intel_dsi_device *dsi);
};

struct intel_dsi {
	struct intel_encoder base;

	struct intel_dsi_device dev;

	struct intel_connector *attached_connector;

	/* bit mask of ports being driven */
	u16 ports;

	/* if true, use HS mode, otherwise LP */
	bool hs;

	/* virtual channel */
	int channel;

	/* Video mode or command mode */
	u16 operation_mode;

	/* number of DSI lanes */
	unsigned int lane_count;

	/* video mode pixel format for MIPI_DSI_FUNC_PRG register */
	u32 pixel_format;

	/* video mode format for MIPI_VIDEO_MODE_FORMAT register */
	u32 video_mode_format;

	/* eot for MIPI_EOT_DISABLE register */
	u8 eotp_pkt;
	u8 clock_stop;

	u8 escape_clk_div;
	u8 dual_link;
	u8 pixel_overlap;
	u32 port_bits;
	u32 bw_timer;
	u32 dphy_reg;
	u32 video_frmt_cfg_bits;
	u16 lp_byte_clk;

	/* timeouts in byte clocks */
	u16 lp_rx_timeout;
	u16 turn_arnd_val;
	u16 rst_timer_val;
	u16 hs_to_lp_count;
	u16 clk_lp_to_hs_count;
	u16 clk_hs_to_lp_count;

	u16 init_count;
	u32 pclk;
	u16 burst_mode_ratio;

	/* all delays in ms */
	u16 backlight_off_delay;
	u16 backlight_on_delay;
	u16 panel_on_delay;
	u16 panel_off_delay;
	u16 panel_pwr_cycle_delay;
};

/* XXX: Transitional before dual port configuration */
static inline enum port intel_dsi_pipe_to_port(enum pipe pipe)
{
	if (pipe == PIPE_A)
		return PORT_A;
	else if (pipe == PIPE_B)
		return PORT_C;

	WARN(1, "DSI on pipe %c, assuming port C\n", pipe_name(pipe));
	return PORT_C;
}

#define for_each_dsi_port(__port, __ports_mask) \
	for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)	\
		if ((__ports_mask) & (1 << (__port)))

static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
{
	return container_of(encoder, struct intel_dsi, base.base);
}

extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);
extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);
extern u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);

extern struct intel_dsi_dev_ops vbt_generic_dsi_display_ops;

#endif /* _INTEL_DSI_H */