1/*
  2 * Copyright © 2013 Intel Corporation
  3 *
  4 * Permission is hereby granted, free of charge, to any person obtaining a
  5 * copy of this software and associated documentation files (the "Software"),
  6 * to deal in the Software without restriction, including without limitation
  7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  8 * and/or sell copies of the Software, and to permit persons to whom the
  9 * Software is furnished to do so, subject to the following conditions:
 10 *
 11 * The above copyright notice and this permission notice (including the next
 12 * paragraph) shall be included in all copies or substantial portions of the
 13 * Software.
 14 *
 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 21 * DEALINGS IN THE SOFTWARE.
 22 */
 23
 24#ifndef _INTEL_DSI_H
 25#define _INTEL_DSI_H
 26
 27#include <drm/drmP.h>
 28#include <drm/drm_crtc.h>
 29#include <drm/drm_mipi_dsi.h>
 30#include "intel_drv.h"
 31
 32/* Dual Link support */
 33#define DSI_DUAL_LINK_NONE		0
 34#define DSI_DUAL_LINK_FRONT_BACK	1
 35#define DSI_DUAL_LINK_PIXEL_ALT		2
 36
 37int dsi_pixel_format_bpp(int pixel_format);
 38
 39struct intel_dsi_host;
 40
 41struct intel_dsi {
 42	struct intel_encoder base;
 43
 44	struct drm_panel *panel;
 45	struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
 46
 47	/* GPIO Desc for CRC based Panel control */
 48	struct gpio_desc *gpio_panel;
 49
 50	struct intel_connector *attached_connector;
 51
 52	/* bit mask of ports being driven */
 53	u16 ports;
 54
 55	/* if true, use HS mode, otherwise LP */
 56	bool hs;
 57
 58	/* virtual channel */
 59	int channel;
 60
 61	/* Video mode or command mode */
 62	u16 operation_mode;
 63
 64	/* number of DSI lanes */
 65	unsigned int lane_count;
 66
 67	/* video mode pixel format for MIPI_DSI_FUNC_PRG register */
 68	u32 pixel_format;
 69
 70	/* video mode format for MIPI_VIDEO_MODE_FORMAT register */
 71	u32 video_mode_format;
 72
 73	/* eot for MIPI_EOT_DISABLE register */
 74	u8 eotp_pkt;
 75	u8 clock_stop;
 76
 77	u8 escape_clk_div;
 78	u8 dual_link;
 79	u8 pixel_overlap;
 80	u32 port_bits;
 81	u32 bw_timer;
 82	u32 dphy_reg;
 83	u32 video_frmt_cfg_bits;
 84	u16 lp_byte_clk;
 85
 86	/* timeouts in byte clocks */
 87	u16 lp_rx_timeout;
 88	u16 turn_arnd_val;
 89	u16 rst_timer_val;
 90	u16 hs_to_lp_count;
 91	u16 clk_lp_to_hs_count;
 92	u16 clk_hs_to_lp_count;
 93
 94	u16 init_count;
 95	u32 pclk;
 96	u16 burst_mode_ratio;
 97
 98	/* all delays in ms */
 99	u16 backlight_off_delay;
100	u16 backlight_on_delay;
101	u16 panel_on_delay;
102	u16 panel_off_delay;
103	u16 panel_pwr_cycle_delay;
104};
105
106struct intel_dsi_host {
107	struct mipi_dsi_host base;
108	struct intel_dsi *intel_dsi;
109	enum port port;
110
111	/* our little hack */
112	struct mipi_dsi_device *device;
113};
114
115static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
116{
117	return container_of(h, struct intel_dsi_host, base);
118}
119
120#define for_each_dsi_port(__port, __ports_mask) \
121	for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)	\
122		for_each_if ((__ports_mask) & (1 << (__port)))
123
124static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
125{
126	return container_of(encoder, struct intel_dsi, base.base);
127}
128
129extern void intel_enable_dsi_pll(struct intel_encoder *encoder);
130extern void intel_disable_dsi_pll(struct intel_encoder *encoder);
131extern u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp);
132extern void intel_dsi_reset_clocks(struct intel_encoder *encoder,
133							enum port port);
134
135struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
136
137#endif /* _INTEL_DSI_H */