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/drm_crtc.h>
 28#include <drm/drm_mipi_dsi.h>
 29
 30#include "intel_display_types.h"
 31
 32#define INTEL_DSI_VIDEO_MODE	0
 33#define INTEL_DSI_COMMAND_MODE	1
 34
 35/* Dual Link support */
 36#define DSI_DUAL_LINK_NONE		0
 37#define DSI_DUAL_LINK_FRONT_BACK	1
 38#define DSI_DUAL_LINK_PIXEL_ALT		2
 39
 40struct intel_dsi_host;
 41
 42struct intel_dsi {
 43	struct intel_encoder base;
 44
 45	struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
 46	intel_wakeref_t io_wakeref[I915_MAX_PORTS];
 47
 48	/* GPIO Desc for panel and backlight control */
 49	struct gpio_desc *gpio_panel;
 50	struct gpio_desc *gpio_backlight;
 51
 52	struct intel_connector *attached_connector;
 53
 54	/* bit mask of ports (vlv dsi) or phys (icl dsi) being driven */
 55	union {
 56		u16 ports;	/* VLV DSI */
 57		u16 phys;	/* ICL DSI */
 58	};
 59
 60	/* if true, use HS mode, otherwise LP */
 61	bool hs;
 62
 63	/* virtual channel */
 64	int channel;
 65
 66	/* Video mode or command mode */
 67	u16 operation_mode;
 68
 69	/* number of DSI lanes */
 70	unsigned int lane_count;
 71
 72	/* i2c bus associated with the slave device */
 73	int i2c_bus_num;
 74
 75	/*
 76	 * video mode pixel format
 77	 *
 78	 * XXX: consolidate on .format in struct mipi_dsi_device.
 79	 */
 80	enum mipi_dsi_pixel_format pixel_format;
 81
 82	/* NON_BURST_SYNC_PULSE, NON_BURST_SYNC_EVENTS, or BURST_MODE */
 83	int video_mode;
 84
 85	/* eot for MIPI_EOT_DISABLE register */
 86	u8 eotp_pkt;
 87	u8 clock_stop;
 88
 89	u8 escape_clk_div;
 90	u8 dual_link;
 91
 92	/* RGB or BGR */
 93	bool bgr_enabled;
 94
 95	u8 pixel_overlap;
 96	u32 port_bits;
 97	u32 bw_timer;
 98	u32 dphy_reg;
 99
100	/* data lanes dphy timing */
101	u32 dphy_data_lane_reg;
102	u32 video_frmt_cfg_bits;
103	u16 lp_byte_clk;
104
105	/* timeouts in byte clocks */
106	u16 hs_tx_timeout;
107	u16 lp_rx_timeout;
108	u16 turn_arnd_val;
109	u16 rst_timer_val;
110	u16 hs_to_lp_count;
111	u16 clk_lp_to_hs_count;
112	u16 clk_hs_to_lp_count;
113
114	u16 init_count;
115	u32 pclk;
116	u16 burst_mode_ratio;
117
118	/* all delays in ms */
119	u16 backlight_off_delay;
120	u16 backlight_on_delay;
121	u16 panel_on_delay;
122	u16 panel_off_delay;
123	u16 panel_pwr_cycle_delay;
124	ktime_t panel_power_off_time;
125};
126
127struct intel_dsi_host {
128	struct mipi_dsi_host base;
129	struct intel_dsi *intel_dsi;
130	enum port port;
131
132	/* our little hack */
133	struct mipi_dsi_device *device;
134};
135
136static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
137{
138	return container_of(h, struct intel_dsi_host, base);
139}
140
141#define for_each_dsi_port(__port, __ports_mask) \
142	for_each_port_masked(__port, __ports_mask)
143#define for_each_dsi_phy(__phy, __phys_mask) \
144	for_each_phy_masked(__phy, __phys_mask)
145
146static inline struct intel_dsi *enc_to_intel_dsi(struct intel_encoder *encoder)
147{
148	return container_of(&encoder->base, struct intel_dsi, base.base);
149}
150
151static inline bool is_vid_mode(struct intel_dsi *intel_dsi)
152{
153	return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE;
154}
155
156static inline bool is_cmd_mode(struct intel_dsi *intel_dsi)
157{
158	return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE;
159}
160
161static inline u16 intel_dsi_encoder_ports(struct intel_encoder *encoder)
162{
163	return enc_to_intel_dsi(encoder)->ports;
164}
165
166int intel_dsi_bitrate(const struct intel_dsi *intel_dsi);
167int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
168enum drm_panel_orientation
169intel_dsi_get_panel_orientation(struct intel_connector *connector);
170int intel_dsi_get_modes(struct drm_connector *connector);
171enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
172					  struct drm_display_mode *mode);
173struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
174					   const struct mipi_dsi_host_ops *funcs,
175					   enum port port);
176void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi);
177void intel_dsi_shutdown(struct intel_encoder *encoder);
178
179#endif /* _INTEL_DSI_H */