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
40 struct intel_dsi_host;
41
42 struct 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 /* virtual channel */
61 int channel;
62
63 /* Video mode or command mode */
64 u16 operation_mode;
65
66 /* number of DSI lanes */
67 unsigned int lane_count;
68
69 /* i2c bus associated with the target device */
70 int i2c_bus_num;
71
72 /*
73 * video mode pixel format
74 *
75 * XXX: consolidate on .format in struct mipi_dsi_device.
76 */
77 enum mipi_dsi_pixel_format pixel_format;
78
79 /* NON_BURST_SYNC_PULSE, NON_BURST_SYNC_EVENTS, or BURST_MODE */
80 int video_mode;
81
82 /* eot for MIPI_EOT_DISABLE register */
83 u8 eotp_pkt;
84 u8 clock_stop;
85
86 u8 escape_clk_div;
87 u8 dual_link;
88
89 /* RGB or BGR */
90 bool bgr_enabled;
91
92 u8 pixel_overlap;
93 u32 bw_timer;
94 u32 dphy_reg;
95
96 /* data lanes dphy timing */
97 u32 dphy_data_lane_reg;
98 u32 video_frmt_cfg_bits;
99 u16 lp_byte_clk;
100
101 /* timeouts in byte clocks */
102 u16 hs_tx_timeout;
103 u16 lp_rx_timeout;
104 u16 turn_arnd_val;
105 u16 rst_timer_val;
106 u16 hs_to_lp_count;
107 u16 clk_lp_to_hs_count;
108 u16 clk_hs_to_lp_count;
109
110 u16 init_count;
111 u32 pclk;
112 u16 burst_mode_ratio;
113
114 /* all delays in ms */
115 u16 backlight_off_delay;
116 u16 backlight_on_delay;
117 u16 panel_on_delay;
118 u16 panel_off_delay;
119 u16 panel_pwr_cycle_delay;
120 ktime_t panel_power_off_time;
121 };
122
123 struct intel_dsi_host {
124 struct mipi_dsi_host base;
125 struct intel_dsi *intel_dsi;
126 enum port port;
127
128 /* our little hack */
129 struct mipi_dsi_device *device;
130 };
131
to_intel_dsi_host(struct mipi_dsi_host * h)132 static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
133 {
134 return container_of(h, struct intel_dsi_host, base);
135 }
136
137 #define for_each_dsi_port(__port, __ports_mask) \
138 for_each_port_masked(__port, __ports_mask)
139 #define for_each_dsi_phy(__phy, __phys_mask) \
140 for_each_phy_masked(__phy, __phys_mask)
141
enc_to_intel_dsi(struct intel_encoder * encoder)142 static inline struct intel_dsi *enc_to_intel_dsi(struct intel_encoder *encoder)
143 {
144 return container_of(&encoder->base, struct intel_dsi, base.base);
145 }
146
is_vid_mode(struct intel_dsi * intel_dsi)147 static inline bool is_vid_mode(struct intel_dsi *intel_dsi)
148 {
149 return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE;
150 }
151
is_cmd_mode(struct intel_dsi * intel_dsi)152 static inline bool is_cmd_mode(struct intel_dsi *intel_dsi)
153 {
154 return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE;
155 }
156
intel_dsi_encoder_ports(struct intel_encoder * encoder)157 static inline u16 intel_dsi_encoder_ports(struct intel_encoder *encoder)
158 {
159 return enc_to_intel_dsi(encoder)->ports;
160 }
161
162 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi);
163 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
164 enum drm_panel_orientation
165 intel_dsi_get_panel_orientation(struct intel_connector *connector);
166 int intel_dsi_get_modes(struct drm_connector *connector);
167 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
168 struct drm_display_mode *mode);
169 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
170 const struct mipi_dsi_host_ops *funcs,
171 enum port port);
172 void intel_dsi_wait_panel_power_cycle(struct intel_dsi *intel_dsi);
173 void intel_dsi_shutdown(struct intel_encoder *encoder);
174
175 #endif /* _INTEL_DSI_H */
176