1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2017-2018, Bootlin
4 */
5
6 #include <linux/delay.h>
7 #include <linux/device.h>
8 #include <linux/err.h>
9 #include <linux/errno.h>
10 #include <linux/fb.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/of_device.h>
14
15 #include <linux/gpio/consumer.h>
16 #include <linux/regulator/consumer.h>
17
18 #include <drm/drm_mipi_dsi.h>
19 #include <drm/drm_modes.h>
20 #include <drm/drm_panel.h>
21
22 #include <video/mipi_display.h>
23
24 enum ili9881c_op {
25 ILI9881C_SWITCH_PAGE,
26 ILI9881C_COMMAND,
27 };
28
29 struct ili9881c_instr {
30 enum ili9881c_op op;
31
32 union arg {
33 struct cmd {
34 u8 cmd;
35 u8 data;
36 } cmd;
37 u8 page;
38 } arg;
39 };
40
41 struct ili9881c_desc {
42 const struct ili9881c_instr *init;
43 const size_t init_length;
44 const struct drm_display_mode *mode;
45 };
46
47 struct ili9881c {
48 struct drm_panel panel;
49 struct mipi_dsi_device *dsi;
50 const struct ili9881c_desc *desc;
51
52 struct regulator *power;
53 struct gpio_desc *reset;
54 };
55
56 #define ILI9881C_SWITCH_PAGE_INSTR(_page) \
57 { \
58 .op = ILI9881C_SWITCH_PAGE, \
59 .arg = { \
60 .page = (_page), \
61 }, \
62 }
63
64 #define ILI9881C_COMMAND_INSTR(_cmd, _data) \
65 { \
66 .op = ILI9881C_COMMAND, \
67 .arg = { \
68 .cmd = \
69 { \
70 .cmd = (_cmd), \
71 .data = (_data), \
72 }, \
73 }, \
74 }
75
76 static const struct ili9881c_instr lhr050h41_init[] = {
77 ILI9881C_SWITCH_PAGE_INSTR(3), ILI9881C_COMMAND_INSTR(0x01, 0x00), ILI9881C_COMMAND_INSTR(0x02, 0x00),
78 ILI9881C_COMMAND_INSTR(0x03, 0x73), ILI9881C_COMMAND_INSTR(0x04, 0x03), ILI9881C_COMMAND_INSTR(0x05, 0x00),
79 ILI9881C_COMMAND_INSTR(0x06, 0x06), ILI9881C_COMMAND_INSTR(0x07, 0x06), ILI9881C_COMMAND_INSTR(0x08, 0x00),
80 ILI9881C_COMMAND_INSTR(0x09, 0x18), ILI9881C_COMMAND_INSTR(0x0a, 0x04), ILI9881C_COMMAND_INSTR(0x0b, 0x00),
81 ILI9881C_COMMAND_INSTR(0x0c, 0x02), ILI9881C_COMMAND_INSTR(0x0d, 0x03), ILI9881C_COMMAND_INSTR(0x0e, 0x00),
82 ILI9881C_COMMAND_INSTR(0x0f, 0x25), ILI9881C_COMMAND_INSTR(0x10, 0x25), ILI9881C_COMMAND_INSTR(0x11, 0x00),
83 ILI9881C_COMMAND_INSTR(0x12, 0x00), ILI9881C_COMMAND_INSTR(0x13, 0x00), ILI9881C_COMMAND_INSTR(0x14, 0x00),
84 ILI9881C_COMMAND_INSTR(0x15, 0x00), ILI9881C_COMMAND_INSTR(0x16, 0x0C), ILI9881C_COMMAND_INSTR(0x17, 0x00),
85 ILI9881C_COMMAND_INSTR(0x18, 0x00), ILI9881C_COMMAND_INSTR(0x19, 0x00), ILI9881C_COMMAND_INSTR(0x1a, 0x00),
86 ILI9881C_COMMAND_INSTR(0x1b, 0x00), ILI9881C_COMMAND_INSTR(0x1c, 0x00), ILI9881C_COMMAND_INSTR(0x1d, 0x00),
87 ILI9881C_COMMAND_INSTR(0x1e, 0xC0), ILI9881C_COMMAND_INSTR(0x1f, 0x80), ILI9881C_COMMAND_INSTR(0x20, 0x04),
88 ILI9881C_COMMAND_INSTR(0x21, 0x01), ILI9881C_COMMAND_INSTR(0x22, 0x00), ILI9881C_COMMAND_INSTR(0x23, 0x00),
89 ILI9881C_COMMAND_INSTR(0x24, 0x00), ILI9881C_COMMAND_INSTR(0x25, 0x00), ILI9881C_COMMAND_INSTR(0x26, 0x00),
90 ILI9881C_COMMAND_INSTR(0x27, 0x00), ILI9881C_COMMAND_INSTR(0x28, 0x33), ILI9881C_COMMAND_INSTR(0x29, 0x03),
91 ILI9881C_COMMAND_INSTR(0x2a, 0x00), ILI9881C_COMMAND_INSTR(0x2b, 0x00), ILI9881C_COMMAND_INSTR(0x2c, 0x00),
92 ILI9881C_COMMAND_INSTR(0x2d, 0x00), ILI9881C_COMMAND_INSTR(0x2e, 0x00), ILI9881C_COMMAND_INSTR(0x2f, 0x00),
93 ILI9881C_COMMAND_INSTR(0x30, 0x00), ILI9881C_COMMAND_INSTR(0x31, 0x00), ILI9881C_COMMAND_INSTR(0x32, 0x00),
94 ILI9881C_COMMAND_INSTR(0x33, 0x00), ILI9881C_COMMAND_INSTR(0x34, 0x04), ILI9881C_COMMAND_INSTR(0x35, 0x00),
95 ILI9881C_COMMAND_INSTR(0x36, 0x00), ILI9881C_COMMAND_INSTR(0x37, 0x00), ILI9881C_COMMAND_INSTR(0x38, 0x3C),
96 ILI9881C_COMMAND_INSTR(0x39, 0x00), ILI9881C_COMMAND_INSTR(0x3a, 0x00), ILI9881C_COMMAND_INSTR(0x3b, 0x00),
97 ILI9881C_COMMAND_INSTR(0x3c, 0x00), ILI9881C_COMMAND_INSTR(0x3d, 0x00), ILI9881C_COMMAND_INSTR(0x3e, 0x00),
98 ILI9881C_COMMAND_INSTR(0x3f, 0x00), ILI9881C_COMMAND_INSTR(0x40, 0x00), ILI9881C_COMMAND_INSTR(0x41, 0x00),
99 ILI9881C_COMMAND_INSTR(0x42, 0x00), ILI9881C_COMMAND_INSTR(0x43, 0x00), ILI9881C_COMMAND_INSTR(0x44, 0x00),
100 ILI9881C_COMMAND_INSTR(0x50, 0x01), ILI9881C_COMMAND_INSTR(0x51, 0x23), ILI9881C_COMMAND_INSTR(0x52, 0x45),
101 ILI9881C_COMMAND_INSTR(0x53, 0x67), ILI9881C_COMMAND_INSTR(0x54, 0x89), ILI9881C_COMMAND_INSTR(0x55, 0xab),
102 ILI9881C_COMMAND_INSTR(0x56, 0x01), ILI9881C_COMMAND_INSTR(0x57, 0x23), ILI9881C_COMMAND_INSTR(0x58, 0x45),
103 ILI9881C_COMMAND_INSTR(0x59, 0x67), ILI9881C_COMMAND_INSTR(0x5a, 0x89), ILI9881C_COMMAND_INSTR(0x5b, 0xab),
104 ILI9881C_COMMAND_INSTR(0x5c, 0xcd), ILI9881C_COMMAND_INSTR(0x5d, 0xef), ILI9881C_COMMAND_INSTR(0x5e, 0x11),
105 ILI9881C_COMMAND_INSTR(0x5f, 0x02), ILI9881C_COMMAND_INSTR(0x60, 0x02), ILI9881C_COMMAND_INSTR(0x61, 0x02),
106 ILI9881C_COMMAND_INSTR(0x62, 0x02), ILI9881C_COMMAND_INSTR(0x63, 0x02), ILI9881C_COMMAND_INSTR(0x64, 0x02),
107 ILI9881C_COMMAND_INSTR(0x65, 0x02), ILI9881C_COMMAND_INSTR(0x66, 0x02), ILI9881C_COMMAND_INSTR(0x67, 0x02),
108 ILI9881C_COMMAND_INSTR(0x68, 0x02), ILI9881C_COMMAND_INSTR(0x69, 0x02), ILI9881C_COMMAND_INSTR(0x6a, 0x0C),
109 ILI9881C_COMMAND_INSTR(0x6b, 0x02), ILI9881C_COMMAND_INSTR(0x6c, 0x0F), ILI9881C_COMMAND_INSTR(0x6d, 0x0E),
110 ILI9881C_COMMAND_INSTR(0x6e, 0x0D), ILI9881C_COMMAND_INSTR(0x6f, 0x06), ILI9881C_COMMAND_INSTR(0x70, 0x07),
111 ILI9881C_COMMAND_INSTR(0x71, 0x02), ILI9881C_COMMAND_INSTR(0x72, 0x02), ILI9881C_COMMAND_INSTR(0x73, 0x02),
112 ILI9881C_COMMAND_INSTR(0x74, 0x02), ILI9881C_COMMAND_INSTR(0x75, 0x02), ILI9881C_COMMAND_INSTR(0x76, 0x02),
113 ILI9881C_COMMAND_INSTR(0x77, 0x02), ILI9881C_COMMAND_INSTR(0x78, 0x02), ILI9881C_COMMAND_INSTR(0x79, 0x02),
114 ILI9881C_COMMAND_INSTR(0x7a, 0x02), ILI9881C_COMMAND_INSTR(0x7b, 0x02), ILI9881C_COMMAND_INSTR(0x7c, 0x02),
115 ILI9881C_COMMAND_INSTR(0x7d, 0x02), ILI9881C_COMMAND_INSTR(0x7e, 0x02), ILI9881C_COMMAND_INSTR(0x7f, 0x02),
116 ILI9881C_COMMAND_INSTR(0x80, 0x0C), ILI9881C_COMMAND_INSTR(0x81, 0x02), ILI9881C_COMMAND_INSTR(0x82, 0x0F),
117 ILI9881C_COMMAND_INSTR(0x83, 0x0E), ILI9881C_COMMAND_INSTR(0x84, 0x0D), ILI9881C_COMMAND_INSTR(0x85, 0x06),
118 ILI9881C_COMMAND_INSTR(0x86, 0x07), ILI9881C_COMMAND_INSTR(0x87, 0x02), ILI9881C_COMMAND_INSTR(0x88, 0x02),
119 ILI9881C_COMMAND_INSTR(0x89, 0x02), ILI9881C_COMMAND_INSTR(0x8A, 0x02), ILI9881C_SWITCH_PAGE_INSTR(4),
120 ILI9881C_COMMAND_INSTR(0x6C, 0x15), ILI9881C_COMMAND_INSTR(0x6E, 0x22), ILI9881C_COMMAND_INSTR(0x6F, 0x33),
121 ILI9881C_COMMAND_INSTR(0x3A, 0xA4), ILI9881C_COMMAND_INSTR(0x8D, 0x0D), ILI9881C_COMMAND_INSTR(0x87, 0xBA),
122 ILI9881C_COMMAND_INSTR(0x26, 0x76), ILI9881C_COMMAND_INSTR(0xB2, 0xD1), ILI9881C_SWITCH_PAGE_INSTR(1),
123 ILI9881C_COMMAND_INSTR(0x22, 0x0A), ILI9881C_COMMAND_INSTR(0x53, 0xDC), ILI9881C_COMMAND_INSTR(0x55, 0xA7),
124 ILI9881C_COMMAND_INSTR(0x50, 0x78), ILI9881C_COMMAND_INSTR(0x51, 0x78), ILI9881C_COMMAND_INSTR(0x31, 0x02),
125 ILI9881C_COMMAND_INSTR(0x60, 0x14), ILI9881C_COMMAND_INSTR(0xA0, 0x2A), ILI9881C_COMMAND_INSTR(0xA1, 0x39),
126 ILI9881C_COMMAND_INSTR(0xA2, 0x46), ILI9881C_COMMAND_INSTR(0xA3, 0x0e), ILI9881C_COMMAND_INSTR(0xA4, 0x12),
127 ILI9881C_COMMAND_INSTR(0xA5, 0x25), ILI9881C_COMMAND_INSTR(0xA6, 0x19), ILI9881C_COMMAND_INSTR(0xA7, 0x1d),
128 ILI9881C_COMMAND_INSTR(0xA8, 0xa6), ILI9881C_COMMAND_INSTR(0xA9, 0x1C), ILI9881C_COMMAND_INSTR(0xAA, 0x29),
129 ILI9881C_COMMAND_INSTR(0xAB, 0x85), ILI9881C_COMMAND_INSTR(0xAC, 0x1C), ILI9881C_COMMAND_INSTR(0xAD, 0x1B),
130 ILI9881C_COMMAND_INSTR(0xAE, 0x51), ILI9881C_COMMAND_INSTR(0xAF, 0x22), ILI9881C_COMMAND_INSTR(0xB0, 0x2d),
131 ILI9881C_COMMAND_INSTR(0xB1, 0x4f), ILI9881C_COMMAND_INSTR(0xB2, 0x59), ILI9881C_COMMAND_INSTR(0xB3, 0x3F),
132 ILI9881C_COMMAND_INSTR(0xC0, 0x2A), ILI9881C_COMMAND_INSTR(0xC1, 0x3a), ILI9881C_COMMAND_INSTR(0xC2, 0x45),
133 ILI9881C_COMMAND_INSTR(0xC3, 0x0e), ILI9881C_COMMAND_INSTR(0xC4, 0x11), ILI9881C_COMMAND_INSTR(0xC5, 0x24),
134 ILI9881C_COMMAND_INSTR(0xC6, 0x1a), ILI9881C_COMMAND_INSTR(0xC7, 0x1c), ILI9881C_COMMAND_INSTR(0xC8, 0xaa),
135 ILI9881C_COMMAND_INSTR(0xC9, 0x1C), ILI9881C_COMMAND_INSTR(0xCA, 0x29), ILI9881C_COMMAND_INSTR(0xCB, 0x96),
136 ILI9881C_COMMAND_INSTR(0xCC, 0x1C), ILI9881C_COMMAND_INSTR(0xCD, 0x1B), ILI9881C_COMMAND_INSTR(0xCE, 0x51),
137 ILI9881C_COMMAND_INSTR(0xCF, 0x22), ILI9881C_COMMAND_INSTR(0xD0, 0x2b), ILI9881C_COMMAND_INSTR(0xD1, 0x4b),
138 ILI9881C_COMMAND_INSTR(0xD2, 0x59), ILI9881C_COMMAND_INSTR(0xD3, 0x3F),
139 };
140
141 static const struct ili9881c_instr k101_im2byl02_init[] = {
142 ILI9881C_SWITCH_PAGE_INSTR(3), ILI9881C_COMMAND_INSTR(0x01, 0x00), ILI9881C_COMMAND_INSTR(0x02, 0x00),
143 ILI9881C_COMMAND_INSTR(0x03, 0x73), ILI9881C_COMMAND_INSTR(0x04, 0x00), ILI9881C_COMMAND_INSTR(0x05, 0x00),
144 ILI9881C_COMMAND_INSTR(0x06, 0x08), ILI9881C_COMMAND_INSTR(0x07, 0x00), ILI9881C_COMMAND_INSTR(0x08, 0x00),
145 ILI9881C_COMMAND_INSTR(0x09, 0x00), ILI9881C_COMMAND_INSTR(0x0A, 0x01), ILI9881C_COMMAND_INSTR(0x0B, 0x01),
146 ILI9881C_COMMAND_INSTR(0x0C, 0x00), ILI9881C_COMMAND_INSTR(0x0D, 0x01), ILI9881C_COMMAND_INSTR(0x0E, 0x01),
147 ILI9881C_COMMAND_INSTR(0x0F, 0x00), ILI9881C_COMMAND_INSTR(0x10, 0x00), ILI9881C_COMMAND_INSTR(0x11, 0x00),
148 ILI9881C_COMMAND_INSTR(0x12, 0x00), ILI9881C_COMMAND_INSTR(0x13, 0x00), ILI9881C_COMMAND_INSTR(0x14, 0x00),
149 ILI9881C_COMMAND_INSTR(0x15, 0x00), ILI9881C_COMMAND_INSTR(0x16, 0x00), ILI9881C_COMMAND_INSTR(0x17, 0x00),
150 ILI9881C_COMMAND_INSTR(0x18, 0x00), ILI9881C_COMMAND_INSTR(0x19, 0x00), ILI9881C_COMMAND_INSTR(0x1A, 0x00),
151 ILI9881C_COMMAND_INSTR(0x1B, 0x00), ILI9881C_COMMAND_INSTR(0x1C, 0x00), ILI9881C_COMMAND_INSTR(0x1D, 0x00),
152 ILI9881C_COMMAND_INSTR(0x1E, 0x40), ILI9881C_COMMAND_INSTR(0x1F, 0xC0), ILI9881C_COMMAND_INSTR(0x20, 0x06),
153 ILI9881C_COMMAND_INSTR(0x21, 0x01), ILI9881C_COMMAND_INSTR(0x22, 0x06), ILI9881C_COMMAND_INSTR(0x23, 0x01),
154 ILI9881C_COMMAND_INSTR(0x24, 0x88), ILI9881C_COMMAND_INSTR(0x25, 0x88), ILI9881C_COMMAND_INSTR(0x26, 0x00),
155 ILI9881C_COMMAND_INSTR(0x27, 0x00), ILI9881C_COMMAND_INSTR(0x28, 0x3B), ILI9881C_COMMAND_INSTR(0x29, 0x03),
156 ILI9881C_COMMAND_INSTR(0x2A, 0x00), ILI9881C_COMMAND_INSTR(0x2B, 0x00), ILI9881C_COMMAND_INSTR(0x2C, 0x00),
157 ILI9881C_COMMAND_INSTR(0x2D, 0x00), ILI9881C_COMMAND_INSTR(0x2E, 0x00), ILI9881C_COMMAND_INSTR(0x2F, 0x00),
158 ILI9881C_COMMAND_INSTR(0x30, 0x00), ILI9881C_COMMAND_INSTR(0x31, 0x00), ILI9881C_COMMAND_INSTR(0x32, 0x00),
159 ILI9881C_COMMAND_INSTR(0x33, 0x00), ILI9881C_COMMAND_INSTR(0x34, 0x00), /* GPWR1/2 non overlap time 2.62us */
160 ILI9881C_COMMAND_INSTR(0x35, 0x00), ILI9881C_COMMAND_INSTR(0x36, 0x00), ILI9881C_COMMAND_INSTR(0x37, 0x00),
161 ILI9881C_COMMAND_INSTR(0x38, 0x00), ILI9881C_COMMAND_INSTR(0x39, 0x00), ILI9881C_COMMAND_INSTR(0x3A, 0x00),
162 ILI9881C_COMMAND_INSTR(0x3B, 0x00), ILI9881C_COMMAND_INSTR(0x3C, 0x00), ILI9881C_COMMAND_INSTR(0x3D, 0x00),
163 ILI9881C_COMMAND_INSTR(0x3E, 0x00), ILI9881C_COMMAND_INSTR(0x3F, 0x00), ILI9881C_COMMAND_INSTR(0x40, 0x00),
164 ILI9881C_COMMAND_INSTR(0x41, 0x00), ILI9881C_COMMAND_INSTR(0x42, 0x00), ILI9881C_COMMAND_INSTR(0x43, 0x00),
165 ILI9881C_COMMAND_INSTR(0x44, 0x00), ILI9881C_COMMAND_INSTR(0x50, 0x01), ILI9881C_COMMAND_INSTR(0x51, 0x23),
166 ILI9881C_COMMAND_INSTR(0x52, 0x45), ILI9881C_COMMAND_INSTR(0x53, 0x67), ILI9881C_COMMAND_INSTR(0x54, 0x89),
167 ILI9881C_COMMAND_INSTR(0x55, 0xAB), ILI9881C_COMMAND_INSTR(0x56, 0x01), ILI9881C_COMMAND_INSTR(0x57, 0x23),
168 ILI9881C_COMMAND_INSTR(0x58, 0x45), ILI9881C_COMMAND_INSTR(0x59, 0x67), ILI9881C_COMMAND_INSTR(0x5A, 0x89),
169 ILI9881C_COMMAND_INSTR(0x5B, 0xAB), ILI9881C_COMMAND_INSTR(0x5C, 0xCD), ILI9881C_COMMAND_INSTR(0x5D, 0xEF),
170 ILI9881C_COMMAND_INSTR(0x5E, 0x00), ILI9881C_COMMAND_INSTR(0x5F, 0x01), ILI9881C_COMMAND_INSTR(0x60, 0x01),
171 ILI9881C_COMMAND_INSTR(0x61, 0x06), ILI9881C_COMMAND_INSTR(0x62, 0x06), ILI9881C_COMMAND_INSTR(0x63, 0x07),
172 ILI9881C_COMMAND_INSTR(0x64, 0x07), ILI9881C_COMMAND_INSTR(0x65, 0x00), ILI9881C_COMMAND_INSTR(0x66, 0x00),
173 ILI9881C_COMMAND_INSTR(0x67, 0x02), ILI9881C_COMMAND_INSTR(0x68, 0x02), ILI9881C_COMMAND_INSTR(0x69, 0x05),
174 ILI9881C_COMMAND_INSTR(0x6A, 0x05), ILI9881C_COMMAND_INSTR(0x6B, 0x02), ILI9881C_COMMAND_INSTR(0x6C, 0x0D),
175 ILI9881C_COMMAND_INSTR(0x6D, 0x0D), ILI9881C_COMMAND_INSTR(0x6E, 0x0C), ILI9881C_COMMAND_INSTR(0x6F, 0x0C),
176 ILI9881C_COMMAND_INSTR(0x70, 0x0F), ILI9881C_COMMAND_INSTR(0x71, 0x0F), ILI9881C_COMMAND_INSTR(0x72, 0x0E),
177 ILI9881C_COMMAND_INSTR(0x73, 0x0E), ILI9881C_COMMAND_INSTR(0x74, 0x02), ILI9881C_COMMAND_INSTR(0x75, 0x01),
178 ILI9881C_COMMAND_INSTR(0x76, 0x01), ILI9881C_COMMAND_INSTR(0x77, 0x06), ILI9881C_COMMAND_INSTR(0x78, 0x06),
179 ILI9881C_COMMAND_INSTR(0x79, 0x07), ILI9881C_COMMAND_INSTR(0x7A, 0x07), ILI9881C_COMMAND_INSTR(0x7B, 0x00),
180 ILI9881C_COMMAND_INSTR(0x7C, 0x00), ILI9881C_COMMAND_INSTR(0x7D, 0x02), ILI9881C_COMMAND_INSTR(0x7E, 0x02),
181 ILI9881C_COMMAND_INSTR(0x7F, 0x05), ILI9881C_COMMAND_INSTR(0x80, 0x05), ILI9881C_COMMAND_INSTR(0x81, 0x02),
182 ILI9881C_COMMAND_INSTR(0x82, 0x0D), ILI9881C_COMMAND_INSTR(0x83, 0x0D), ILI9881C_COMMAND_INSTR(0x84, 0x0C),
183 ILI9881C_COMMAND_INSTR(0x85, 0x0C), ILI9881C_COMMAND_INSTR(0x86, 0x0F), ILI9881C_COMMAND_INSTR(0x87, 0x0F),
184 ILI9881C_COMMAND_INSTR(0x88, 0x0E), ILI9881C_COMMAND_INSTR(0x89, 0x0E), ILI9881C_COMMAND_INSTR(0x8A, 0x02),
185 ILI9881C_SWITCH_PAGE_INSTR(4), ILI9881C_COMMAND_INSTR(0x3B, 0xC0), /* ILI4003D sel */
186 ILI9881C_COMMAND_INSTR(0x6C, 0x15), /* Set VCORE voltage = 1.5V */
187 ILI9881C_COMMAND_INSTR(0x6E, 0x2A), /* di_pwr_reg=0 for power mode 2A, VGH clamp 18V */
188 ILI9881C_COMMAND_INSTR(0x6F, 0x33), /* pumping ratio VGH=5x VGL=-3x */
189 ILI9881C_COMMAND_INSTR(0x8D, 0x1B), /* VGL clamp -10V */
190 ILI9881C_COMMAND_INSTR(0x87, 0xBA), /* ESD */
191 ILI9881C_COMMAND_INSTR(0x3A, 0x24), /* POWER SAVING */
192 ILI9881C_COMMAND_INSTR(0x26, 0x76), ILI9881C_COMMAND_INSTR(0xB2, 0xD1), ILI9881C_SWITCH_PAGE_INSTR(1),
193 ILI9881C_COMMAND_INSTR(0x22, 0x0A), /* BGR, SS */
194 ILI9881C_COMMAND_INSTR(0x31, 0x00), /* Zigzag type3 inversion */
195 ILI9881C_COMMAND_INSTR(0x40, 0x53), /* ILI4003D sel */
196 ILI9881C_COMMAND_INSTR(0x43, 0x66), ILI9881C_COMMAND_INSTR(0x53, 0x4C), ILI9881C_COMMAND_INSTR(0x50, 0x87),
197 ILI9881C_COMMAND_INSTR(0x51, 0x82), ILI9881C_COMMAND_INSTR(0x60, 0x15), ILI9881C_COMMAND_INSTR(0x61, 0x01),
198 ILI9881C_COMMAND_INSTR(0x62, 0x0C), ILI9881C_COMMAND_INSTR(0x63, 0x00), ILI9881C_COMMAND_INSTR(0xA0, 0x00),
199 ILI9881C_COMMAND_INSTR(0xA1, 0x13), /* VP251 */
200 ILI9881C_COMMAND_INSTR(0xA2, 0x23), /* VP247 */
201 ILI9881C_COMMAND_INSTR(0xA3, 0x14), /* VP243 */
202 ILI9881C_COMMAND_INSTR(0xA4, 0x16), /* VP239 */
203 ILI9881C_COMMAND_INSTR(0xA5, 0x29), /* VP231 */
204 ILI9881C_COMMAND_INSTR(0xA6, 0x1E), /* VP219 */
205 ILI9881C_COMMAND_INSTR(0xA7, 0x1D), /* VP203 */
206 ILI9881C_COMMAND_INSTR(0xA8, 0x86), /* VP175 */
207 ILI9881C_COMMAND_INSTR(0xA9, 0x1E), /* VP144 */
208 ILI9881C_COMMAND_INSTR(0xAA, 0x29), /* VP111 */
209 ILI9881C_COMMAND_INSTR(0xAB, 0x74), /* VP80 */
210 ILI9881C_COMMAND_INSTR(0xAC, 0x19), /* VP52 */
211 ILI9881C_COMMAND_INSTR(0xAD, 0x17), /* VP36 */
212 ILI9881C_COMMAND_INSTR(0xAE, 0x4B), /* VP24 */
213 ILI9881C_COMMAND_INSTR(0xAF, 0x20), /* VP16 */
214 ILI9881C_COMMAND_INSTR(0xB0, 0x26), /* VP12 */
215 ILI9881C_COMMAND_INSTR(0xB1, 0x4C), /* VP8 */
216 ILI9881C_COMMAND_INSTR(0xB2, 0x5D), /* VP4 */
217 ILI9881C_COMMAND_INSTR(0xB3, 0x3F), /* VP0 */
218 ILI9881C_COMMAND_INSTR(0xC0, 0x00), /* VN255 GAMMA N */
219 ILI9881C_COMMAND_INSTR(0xC1, 0x13), /* VN251 */
220 ILI9881C_COMMAND_INSTR(0xC2, 0x23), /* VN247 */
221 ILI9881C_COMMAND_INSTR(0xC3, 0x14), /* VN243 */
222 ILI9881C_COMMAND_INSTR(0xC4, 0x16), /* VN239 */
223 ILI9881C_COMMAND_INSTR(0xC5, 0x29), /* VN231 */
224 ILI9881C_COMMAND_INSTR(0xC6, 0x1E), /* VN219 */
225 ILI9881C_COMMAND_INSTR(0xC7, 0x1D), /* VN203 */
226 ILI9881C_COMMAND_INSTR(0xC8, 0x86), /* VN175 */
227 ILI9881C_COMMAND_INSTR(0xC9, 0x1E), /* VN144 */
228 ILI9881C_COMMAND_INSTR(0xCA, 0x29), /* VN111 */
229 ILI9881C_COMMAND_INSTR(0xCB, 0x74), /* VN80 */
230 ILI9881C_COMMAND_INSTR(0xCC, 0x19), /* VN52 */
231 ILI9881C_COMMAND_INSTR(0xCD, 0x17), /* VN36 */
232 ILI9881C_COMMAND_INSTR(0xCE, 0x4B), /* VN24 */
233 ILI9881C_COMMAND_INSTR(0xCF, 0x20), /* VN16 */
234 ILI9881C_COMMAND_INSTR(0xD0, 0x26), /* VN12 */
235 ILI9881C_COMMAND_INSTR(0xD1, 0x4C), /* VN8 */
236 ILI9881C_COMMAND_INSTR(0xD2, 0x5D), /* VN4 */
237 ILI9881C_COMMAND_INSTR(0xD3, 0x3F), /* VN0 */
238 };
239
panel_to_ili9881c(struct drm_panel *panel)240 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)
241 {
242 return container_of(panel, struct ili9881c, panel);
243 }
244
245 /*
246 * The panel seems to accept some private DCS commands that map
247 * directly to registers.
248 *
249 * It is organised by page, with each page having its own set of
250 * registers, and the first page looks like it's holding the standard
251 * DCS commands.
252 *
253 * So before any attempt at sending a command or data, we have to be
254 * sure if we're in the right page or not.
255 */
ili9881c_switch_page(struct ili9881c *ctx, u8 page)256 static int ili9881c_switch_page(struct ili9881c *ctx, u8 page)
257 {
258 u8 buf[0x4] = {0xff, 0x98, 0x81, page};
259 int ret;
260
261 ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
262 if (ret < 0) {
263 return ret;
264 }
265
266 return 0;
267 }
268
ili9881c_send_cmd_data(struct ili9881c *ctx, u8 cmd, u8 data)269 static int ili9881c_send_cmd_data(struct ili9881c *ctx, u8 cmd, u8 data)
270 {
271 u8 buf[0x2] = {cmd, data};
272 int ret;
273
274 ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));
275 if (ret < 0) {
276 return ret;
277 }
278
279 return 0;
280 }
281
ili9881c_prepare(struct drm_panel *panel)282 static int ili9881c_prepare(struct drm_panel *panel)
283 {
284 struct ili9881c *ctx = panel_to_ili9881c(panel);
285 unsigned int i;
286 int ret;
287
288 /* Power the panel */
289 ret = regulator_enable(ctx->power);
290 if (ret) {
291 return ret;
292 }
293 msleep(0x5);
294
295 /* And reset it */
296 gpiod_set_value(ctx->reset, 1);
297 msleep(0x14);
298
299 gpiod_set_value(ctx->reset, 0);
300 msleep(0x14);
301
302 for (i = 0; i < ctx->desc->init_length; i++) {
303 const struct ili9881c_instr *instr = &ctx->desc->init[i];
304
305 if (instr->op == ILI9881C_SWITCH_PAGE) {
306 ret = ili9881c_switch_page(ctx, instr->arg.page);
307 } else if (instr->op == ILI9881C_COMMAND) {
308 ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd, instr->arg.cmd.data);
309 }
310
311 if (ret) {
312 return ret;
313 }
314 }
315
316 ret = ili9881c_switch_page(ctx, 0);
317 if (ret) {
318 return ret;
319 }
320
321 ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
322 if (ret) {
323 return ret;
324 }
325
326 ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
327 if (ret) {
328 return ret;
329 }
330
331 return 0;
332 }
333
ili9881c_enable(struct drm_panel *panel)334 static int ili9881c_enable(struct drm_panel *panel)
335 {
336 struct ili9881c *ctx = panel_to_ili9881c(panel);
337
338 msleep(0x78);
339
340 mipi_dsi_dcs_set_display_on(ctx->dsi);
341
342 return 0;
343 }
344
ili9881c_disable(struct drm_panel *panel)345 static int ili9881c_disable(struct drm_panel *panel)
346 {
347 struct ili9881c *ctx = panel_to_ili9881c(panel);
348
349 return mipi_dsi_dcs_set_display_off(ctx->dsi);
350 }
351
ili9881c_unprepare(struct drm_panel *panel)352 static int ili9881c_unprepare(struct drm_panel *panel)
353 {
354 struct ili9881c *ctx = panel_to_ili9881c(panel);
355
356 mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
357 regulator_disable(ctx->power);
358 gpiod_set_value(ctx->reset, 1);
359
360 return 0;
361 }
362
363 static const struct drm_display_mode lhr050h41_default_mode = {
364 .clock = 62000,
365
366 .hdisplay = 720,
367 .hsync_start = 720 + 10,
368 .hsync_end = 720 + 10 + 20,
369 .htotal = 720 + 10 + 20 + 30,
370
371 .vdisplay = 1280,
372 .vsync_start = 1280 + 10,
373 .vsync_end = 1280 + 10 + 10,
374 .vtotal = 1280 + 10 + 10 + 20,
375
376 .width_mm = 62,
377 .height_mm = 110,
378 };
379
380 static const struct drm_display_mode k101_im2byl02_default_mode = {
381 .clock = 69700,
382
383 .hdisplay = 800,
384 .hsync_start = 800 + 6,
385 .hsync_end = 800 + 6 + 15,
386 .htotal = 800 + 6 + 15 + 16,
387
388 .vdisplay = 1280,
389 .vsync_start = 1280 + 8,
390 .vsync_end = 1280 + 8 + 48,
391 .vtotal = 1280 + 8 + 48 + 52,
392
393 .width_mm = 135,
394 .height_mm = 217,
395 };
396
ili9881c_get_modes(struct drm_panel *panel, struct drm_connector *connector)397 static int ili9881c_get_modes(struct drm_panel *panel, struct drm_connector *connector)
398 {
399 struct ili9881c *ctx = panel_to_ili9881c(panel);
400 struct drm_display_mode *mode;
401
402 mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
403 if (!mode) {
404 dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n", ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
405 drm_mode_vrefresh(ctx->desc->mode));
406 return -ENOMEM;
407 }
408
409 drm_mode_set_name(mode);
410
411 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
412 drm_mode_probed_add(connector, mode);
413
414 connector->display_info.width_mm = mode->width_mm;
415 connector->display_info.height_mm = mode->height_mm;
416
417 return 1;
418 }
419
420 static const struct drm_panel_funcs ili9881c_funcs = {
421 .prepare = ili9881c_prepare,
422 .unprepare = ili9881c_unprepare,
423 .enable = ili9881c_enable,
424 .disable = ili9881c_disable,
425 .get_modes = ili9881c_get_modes,
426 };
427
ili9881c_dsi_probe(struct mipi_dsi_device *dsi)428 static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
429 {
430 struct ili9881c *ctx;
431 int ret;
432
433 ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
434 if (!ctx) {
435 return -ENOMEM;
436 }
437 mipi_dsi_set_drvdata(dsi, ctx);
438 ctx->dsi = dsi;
439 ctx->desc = of_device_get_match_data(&dsi->dev);
440
441 drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs, DRM_MODE_CONNECTOR_DSI);
442
443 ctx->power = devm_regulator_get(&dsi->dev, "power");
444 if (IS_ERR(ctx->power)) {
445 dev_err(&dsi->dev, "Couldn't get our power regulator\n");
446 return PTR_ERR(ctx->power);
447 }
448
449 ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
450 if (IS_ERR(ctx->reset)) {
451 dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
452 return PTR_ERR(ctx->reset);
453 }
454
455 ret = drm_panel_of_backlight(&ctx->panel);
456 if (ret) {
457 return ret;
458 }
459
460 drm_panel_add(&ctx->panel);
461
462 dsi->mode_flags = MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
463 dsi->format = MIPI_DSI_FMT_RGB888;
464 dsi->lanes = 0x4;
465
466 return mipi_dsi_attach(dsi);
467 }
468
ili9881c_dsi_remove(struct mipi_dsi_device *dsi)469 static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)
470 {
471 struct ili9881c *ctx = mipi_dsi_get_drvdata(dsi);
472
473 mipi_dsi_detach(dsi);
474 drm_panel_remove(&ctx->panel);
475
476 return 0;
477 }
478
479 static const struct ili9881c_desc lhr050h41_desc = {
480 .init = lhr050h41_init,
481 .init_length = ARRAY_SIZE(lhr050h41_init),
482 .mode = &lhr050h41_default_mode,
483 };
484
485 static const struct ili9881c_desc k101_im2byl02_desc = {
486 .init = k101_im2byl02_init,
487 .init_length = ARRAY_SIZE(k101_im2byl02_init),
488 .mode = &k101_im2byl02_default_mode,
489 };
490
491 static const struct of_device_id ili9881c_of_match[] = {
492 {.compatible = "bananapi,lhr050h41", .data = &lhr050h41_desc},
493 {.compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc},
494 {}};
495 MODULE_DEVICE_TABLE(of, ili9881c_of_match);
496
497 static struct mipi_dsi_driver ili9881c_dsi_driver = {
498 .probe = ili9881c_dsi_probe,
499 .remove = ili9881c_dsi_remove,
500 .driver =
501 {
502 .name = "ili9881c-dsi",
503 .of_match_table = ili9881c_of_match,
504 },
505 };
506 module_mipi_dsi_driver(ili9881c_dsi_driver);
507
508 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
509 MODULE_DESCRIPTION("Ilitek ILI9881C Controller Driver");
510 MODULE_LICENSE("GPL v2");
511