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
37 struct intel_dsi_host;
38
39 struct intel_dsi {
40 struct intel_encoder base;
41
42 struct drm_panel *panel;
43 struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
44
45 /* GPIO Desc for CRC based Panel control */
46 struct gpio_desc *gpio_panel;
47
48 struct intel_connector *attached_connector;
49
50 /* bit mask of ports being driven */
51 u16 ports;
52
53 /* if true, use HS mode, otherwise LP */
54 bool hs;
55
56 /* virtual channel */
57 int channel;
58
59 /* Video mode or command mode */
60 u16 operation_mode;
61
62 /* number of DSI lanes */
63 unsigned int lane_count;
64
65 /* video mode pixel format for MIPI_DSI_FUNC_PRG register */
66 u32 pixel_format;
67
68 /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
69 u32 video_mode_format;
70
71 /* eot for MIPI_EOT_DISABLE register */
72 u8 eotp_pkt;
73 u8 clock_stop;
74
75 u8 escape_clk_div;
76 u8 dual_link;
77 u8 pixel_overlap;
78 u32 port_bits;
79 u32 bw_timer;
80 u32 dphy_reg;
81 u32 video_frmt_cfg_bits;
82 u16 lp_byte_clk;
83
84 /* timeouts in byte clocks */
85 u16 lp_rx_timeout;
86 u16 turn_arnd_val;
87 u16 rst_timer_val;
88 u16 hs_to_lp_count;
89 u16 clk_lp_to_hs_count;
90 u16 clk_hs_to_lp_count;
91
92 u16 init_count;
93 u32 pclk;
94 u16 burst_mode_ratio;
95
96 /* all delays in ms */
97 u16 backlight_off_delay;
98 u16 backlight_on_delay;
99 u16 panel_on_delay;
100 u16 panel_off_delay;
101 u16 panel_pwr_cycle_delay;
102 };
103
104 struct intel_dsi_host {
105 struct mipi_dsi_host base;
106 struct intel_dsi *intel_dsi;
107 enum port port;
108
109 /* our little hack */
110 struct mipi_dsi_device *device;
111 };
112
to_intel_dsi_host(struct mipi_dsi_host * h)113 static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
114 {
115 return container_of(h, struct intel_dsi_host, base);
116 }
117
118 #define for_each_dsi_port(__port, __ports_mask) \
119 for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++) \
120 if ((__ports_mask) & (1 << (__port)))
121
enc_to_intel_dsi(struct drm_encoder * encoder)122 static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
123 {
124 return container_of(encoder, struct intel_dsi, base.base);
125 }
126
127 extern void intel_enable_dsi_pll(struct intel_encoder *encoder);
128 extern void intel_disable_dsi_pll(struct intel_encoder *encoder);
129 extern u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);
130 extern u32 bxt_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);
131 extern void intel_dsi_reset_clocks(struct intel_encoder *encoder,
132 enum port port);
133
134 struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
135
136 #endif /* _INTEL_DSI_H */
137