1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * MIPI-DSI based s6e3ha2 AMOLED 5.7 inch panel driver.
4  *
5  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
6  * Donghwa Lee <dh09.lee@samsung.com>
7  * Hyungwon Hwang <human.hwang@samsung.com>
8  * Hoegeun Kwon <hoegeun.kwon@samsung.com>
9  */
10 
11 #include <linux/backlight.h>
12 #include <linux/delay.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/module.h>
15 #include <linux/of_device.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 #include <drm/drm_print.h>
22 
23 #define S6E3HA2_MIN_BRIGHTNESS		0
24 #define S6E3HA2_MAX_BRIGHTNESS		100
25 #define S6E3HA2_DEFAULT_BRIGHTNESS	80
26 
27 #define S6E3HA2_NUM_GAMMA_STEPS		46
28 #define S6E3HA2_GAMMA_CMD_CNT		35
29 #define S6E3HA2_VINT_STATUS_MAX		10
30 
31 static const u8 gamma_tbl[S6E3HA2_NUM_GAMMA_STEPS][S6E3HA2_GAMMA_CMD_CNT] = {
32 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x82, 0x83,
33 	  0x85, 0x88, 0x8b, 0x8b, 0x84, 0x88, 0x82, 0x82, 0x89, 0x86, 0x8c,
34 	  0x94, 0x84, 0xb1, 0xaf, 0x8e, 0xcf, 0xad, 0xc9, 0x00, 0x00, 0x00,
35 	  0x00, 0x00 },
36 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x84, 0x84,
37 	  0x85, 0x87, 0x8b, 0x8a, 0x84, 0x88, 0x82, 0x82, 0x89, 0x86, 0x8a,
38 	  0x93, 0x84, 0xb0, 0xae, 0x8e, 0xc9, 0xa8, 0xc5, 0x00, 0x00, 0x00,
39 	  0x00, 0x00 },
40 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
41 	  0x85, 0x86, 0x8a, 0x8a, 0x84, 0x88, 0x81, 0x84, 0x8a, 0x88, 0x8a,
42 	  0x91, 0x84, 0xb1, 0xae, 0x8b, 0xd5, 0xb2, 0xcc, 0x00, 0x00, 0x00,
43 	  0x00, 0x00 },
44 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
45 	  0x85, 0x86, 0x8a, 0x8a, 0x84, 0x87, 0x81, 0x84, 0x8a, 0x87, 0x8a,
46 	  0x91, 0x85, 0xae, 0xac, 0x8a, 0xc3, 0xa3, 0xc0, 0x00, 0x00, 0x00,
47 	  0x00, 0x00 },
48 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x85, 0x85,
49 	  0x86, 0x85, 0x88, 0x89, 0x84, 0x89, 0x82, 0x84, 0x87, 0x85, 0x8b,
50 	  0x91, 0x88, 0xad, 0xab, 0x8a, 0xb7, 0x9b, 0xb6, 0x00, 0x00, 0x00,
51 	  0x00, 0x00 },
52 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
53 	  0x85, 0x86, 0x89, 0x8a, 0x84, 0x89, 0x83, 0x83, 0x86, 0x84, 0x8b,
54 	  0x90, 0x84, 0xb0, 0xae, 0x8b, 0xce, 0xad, 0xc8, 0x00, 0x00, 0x00,
55 	  0x00, 0x00 },
56 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
57 	  0x85, 0x87, 0x89, 0x8a, 0x83, 0x87, 0x82, 0x85, 0x88, 0x87, 0x89,
58 	  0x8f, 0x84, 0xac, 0xaa, 0x89, 0xb1, 0x98, 0xaf, 0x00, 0x00, 0x00,
59 	  0x00, 0x00 },
60 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
61 	  0x85, 0x86, 0x88, 0x89, 0x84, 0x88, 0x83, 0x82, 0x85, 0x84, 0x8c,
62 	  0x91, 0x86, 0xac, 0xaa, 0x89, 0xc2, 0xa5, 0xbd, 0x00, 0x00, 0x00,
63 	  0x00, 0x00 },
64 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
65 	  0x85, 0x87, 0x89, 0x8a, 0x83, 0x87, 0x82, 0x85, 0x88, 0x87, 0x88,
66 	  0x8b, 0x82, 0xad, 0xaa, 0x8a, 0xc2, 0xa5, 0xbd, 0x00, 0x00, 0x00,
67 	  0x00, 0x00 },
68 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x89, 0x87, 0x87, 0x83, 0x83,
69 	  0x85, 0x86, 0x87, 0x89, 0x84, 0x88, 0x83, 0x82, 0x85, 0x84, 0x8a,
70 	  0x8e, 0x84, 0xae, 0xac, 0x89, 0xda, 0xb7, 0xd0, 0x00, 0x00, 0x00,
71 	  0x00, 0x00 },
72 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
73 	  0x85, 0x86, 0x87, 0x89, 0x84, 0x88, 0x83, 0x80, 0x83, 0x82, 0x8b,
74 	  0x8e, 0x85, 0xac, 0xaa, 0x89, 0xc8, 0xaa, 0xc1, 0x00, 0x00, 0x00,
75 	  0x00, 0x00 },
76 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
77 	  0x85, 0x86, 0x87, 0x89, 0x81, 0x85, 0x81, 0x84, 0x86, 0x84, 0x8c,
78 	  0x8c, 0x84, 0xa9, 0xa8, 0x87, 0xa3, 0x92, 0xa1, 0x00, 0x00, 0x00,
79 	  0x00, 0x00 },
80 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
81 	  0x85, 0x86, 0x87, 0x89, 0x84, 0x86, 0x83, 0x80, 0x83, 0x81, 0x8c,
82 	  0x8d, 0x84, 0xaa, 0xaa, 0x89, 0xce, 0xaf, 0xc5, 0x00, 0x00, 0x00,
83 	  0x00, 0x00 },
84 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
85 	  0x85, 0x86, 0x87, 0x89, 0x81, 0x83, 0x80, 0x83, 0x85, 0x85, 0x8c,
86 	  0x8c, 0x84, 0xa8, 0xa8, 0x88, 0xb5, 0x9f, 0xb0, 0x00, 0x00, 0x00,
87 	  0x00, 0x00 },
88 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
89 	  0x86, 0x86, 0x87, 0x88, 0x81, 0x83, 0x80, 0x83, 0x85, 0x85, 0x8c,
90 	  0x8b, 0x84, 0xab, 0xa8, 0x86, 0xd4, 0xb4, 0xc9, 0x00, 0x00, 0x00,
91 	  0x00, 0x00 },
92 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
93 	  0x86, 0x86, 0x87, 0x88, 0x81, 0x83, 0x80, 0x84, 0x84, 0x85, 0x8b,
94 	  0x8a, 0x83, 0xa6, 0xa5, 0x84, 0xbb, 0xa4, 0xb3, 0x00, 0x00, 0x00,
95 	  0x00, 0x00 },
96 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x84, 0x84,
97 	  0x86, 0x85, 0x86, 0x86, 0x82, 0x85, 0x81, 0x82, 0x83, 0x84, 0x8e,
98 	  0x8b, 0x83, 0xa4, 0xa3, 0x8a, 0xa1, 0x93, 0x9d, 0x00, 0x00, 0x00,
99 	  0x00, 0x00 },
100 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
101 	  0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x82, 0x82, 0x84, 0x8e,
102 	  0x8b, 0x83, 0xa4, 0xa2, 0x86, 0xc1, 0xa9, 0xb7, 0x00, 0x00, 0x00,
103 	  0x00, 0x00 },
104 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
105 	  0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x82, 0x82, 0x84, 0x8d,
106 	  0x89, 0x82, 0xa2, 0xa1, 0x84, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,
107 	  0x00, 0x00 },
108 	{ 0x00, 0xb8, 0x00, 0xc3, 0x00, 0xb1, 0x88, 0x86, 0x87, 0x83, 0x83,
109 	  0x85, 0x86, 0x87, 0x87, 0x82, 0x85, 0x81, 0x83, 0x83, 0x85, 0x8c,
110 	  0x87, 0x7f, 0xa2, 0x9d, 0x88, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,
111 	  0x00, 0x00 },
112 	{ 0x00, 0xbb, 0x00, 0xc5, 0x00, 0xb4, 0x87, 0x86, 0x86, 0x84, 0x83,
113 	  0x86, 0x87, 0x87, 0x87, 0x80, 0x82, 0x7f, 0x86, 0x86, 0x88, 0x8a,
114 	  0x84, 0x7e, 0x9d, 0x9c, 0x82, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,
115 	  0x00, 0x00 },
116 	{ 0x00, 0xbd, 0x00, 0xc7, 0x00, 0xb7, 0x87, 0x85, 0x85, 0x84, 0x83,
117 	  0x86, 0x86, 0x86, 0x88, 0x81, 0x83, 0x80, 0x83, 0x84, 0x85, 0x8a,
118 	  0x85, 0x7e, 0x9c, 0x9b, 0x85, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
119 	  0x00, 0x00 },
120 	{ 0x00, 0xc0, 0x00, 0xca, 0x00, 0xbb, 0x87, 0x86, 0x85, 0x83, 0x83,
121 	  0x85, 0x86, 0x86, 0x88, 0x81, 0x83, 0x80, 0x84, 0x85, 0x86, 0x89,
122 	  0x83, 0x7d, 0x9c, 0x99, 0x87, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,
123 	  0x00, 0x00 },
124 	{ 0x00, 0xc4, 0x00, 0xcd, 0x00, 0xbe, 0x87, 0x86, 0x85, 0x83, 0x83,
125 	  0x86, 0x85, 0x85, 0x87, 0x81, 0x82, 0x80, 0x82, 0x82, 0x83, 0x8a,
126 	  0x85, 0x7f, 0x9f, 0x9b, 0x86, 0xb4, 0xa1, 0xac, 0x00, 0x00, 0x00,
127 	  0x00, 0x00 },
128 	{ 0x00, 0xc7, 0x00, 0xd0, 0x00, 0xc2, 0x87, 0x85, 0x85, 0x83, 0x82,
129 	  0x85, 0x85, 0x85, 0x86, 0x82, 0x83, 0x80, 0x82, 0x82, 0x84, 0x87,
130 	  0x86, 0x80, 0x9e, 0x9a, 0x87, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,
131 	  0x00, 0x00 },
132 	{ 0x00, 0xca, 0x00, 0xd2, 0x00, 0xc5, 0x87, 0x85, 0x84, 0x82, 0x82,
133 	  0x84, 0x85, 0x85, 0x86, 0x81, 0x82, 0x7f, 0x82, 0x82, 0x84, 0x88,
134 	  0x86, 0x81, 0x9d, 0x98, 0x86, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,
135 	  0x00, 0x00 },
136 	{ 0x00, 0xce, 0x00, 0xd6, 0x00, 0xca, 0x86, 0x85, 0x84, 0x83, 0x83,
137 	  0x85, 0x84, 0x84, 0x85, 0x81, 0x82, 0x80, 0x81, 0x81, 0x82, 0x89,
138 	  0x86, 0x81, 0x9c, 0x97, 0x86, 0xa7, 0x98, 0xa1, 0x00, 0x00, 0x00,
139 	  0x00, 0x00 },
140 	{ 0x00, 0xd1, 0x00, 0xd9, 0x00, 0xce, 0x86, 0x84, 0x83, 0x83, 0x82,
141 	  0x85, 0x85, 0x85, 0x86, 0x81, 0x83, 0x81, 0x82, 0x82, 0x83, 0x86,
142 	  0x83, 0x7f, 0x99, 0x95, 0x86, 0xbb, 0xa4, 0xb3, 0x00, 0x00, 0x00,
143 	  0x00, 0x00 },
144 	{ 0x00, 0xd4, 0x00, 0xdb, 0x00, 0xd1, 0x86, 0x85, 0x83, 0x83, 0x82,
145 	  0x85, 0x84, 0x84, 0x85, 0x80, 0x83, 0x82, 0x80, 0x80, 0x81, 0x87,
146 	  0x84, 0x81, 0x98, 0x93, 0x85, 0xae, 0x9c, 0xa8, 0x00, 0x00, 0x00,
147 	  0x00, 0x00 },
148 	{ 0x00, 0xd8, 0x00, 0xde, 0x00, 0xd6, 0x86, 0x84, 0x83, 0x81, 0x81,
149 	  0x83, 0x85, 0x85, 0x85, 0x82, 0x83, 0x81, 0x81, 0x81, 0x83, 0x86,
150 	  0x84, 0x80, 0x98, 0x91, 0x85, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,
151 	  0x00, 0x00 },
152 	{ 0x00, 0xdc, 0x00, 0xe2, 0x00, 0xda, 0x85, 0x84, 0x83, 0x82, 0x82,
153 	  0x84, 0x84, 0x84, 0x85, 0x81, 0x82, 0x82, 0x80, 0x80, 0x81, 0x83,
154 	  0x82, 0x7f, 0x99, 0x93, 0x86, 0x94, 0x8b, 0x92, 0x00, 0x00, 0x00,
155 	  0x00, 0x00 },
156 	{ 0x00, 0xdf, 0x00, 0xe5, 0x00, 0xde, 0x85, 0x84, 0x82, 0x82, 0x82,
157 	  0x84, 0x83, 0x83, 0x84, 0x81, 0x81, 0x80, 0x83, 0x82, 0x84, 0x82,
158 	  0x81, 0x7f, 0x99, 0x92, 0x86, 0x7b, 0x7b, 0x7c, 0x00, 0x00, 0x00,
159 	  0x00, 0x00 },
160 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
161 	  0x82, 0x83, 0x83, 0x84, 0x80, 0x81, 0x80, 0x83, 0x83, 0x84, 0x80,
162 	  0x81, 0x7c, 0x99, 0x92, 0x87, 0xa1, 0x93, 0x9d, 0x00, 0x00, 0x00,
163 	  0x00, 0x00 },
164 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x85, 0x84, 0x83, 0x81, 0x81,
165 	  0x82, 0x82, 0x82, 0x83, 0x80, 0x81, 0x80, 0x81, 0x80, 0x82, 0x83,
166 	  0x82, 0x80, 0x91, 0x8d, 0x83, 0x9a, 0x90, 0x96, 0x00, 0x00, 0x00,
167 	  0x00, 0x00 },
168 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
169 	  0x82, 0x83, 0x83, 0x84, 0x80, 0x81, 0x80, 0x81, 0x80, 0x82, 0x83,
170 	  0x81, 0x7f, 0x91, 0x8c, 0x82, 0x8d, 0x88, 0x8b, 0x00, 0x00, 0x00,
171 	  0x00, 0x00 },
172 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
173 	  0x82, 0x83, 0x83, 0x83, 0x82, 0x82, 0x81, 0x81, 0x80, 0x82, 0x82,
174 	  0x82, 0x7f, 0x94, 0x89, 0x84, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
175 	  0x00, 0x00 },
176 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
177 	  0x82, 0x83, 0x83, 0x83, 0x82, 0x82, 0x81, 0x81, 0x80, 0x82, 0x83,
178 	  0x82, 0x7f, 0x91, 0x85, 0x81, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
179 	  0x00, 0x00 },
180 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x81, 0x81,
181 	  0x82, 0x83, 0x83, 0x83, 0x80, 0x80, 0x7f, 0x83, 0x82, 0x84, 0x83,
182 	  0x82, 0x7f, 0x90, 0x84, 0x81, 0x9a, 0x90, 0x96, 0x00, 0x00, 0x00,
183 	  0x00, 0x00 },
184 	{ 0x00, 0xe4, 0x00, 0xe9, 0x00, 0xe3, 0x84, 0x83, 0x82, 0x80, 0x80,
185 	  0x82, 0x83, 0x83, 0x83, 0x80, 0x80, 0x7f, 0x80, 0x80, 0x81, 0x81,
186 	  0x82, 0x83, 0x7e, 0x80, 0x7c, 0xa4, 0x97, 0x9f, 0x00, 0x00, 0x00,
187 	  0x00, 0x00 },
188 	{ 0x00, 0xe9, 0x00, 0xec, 0x00, 0xe8, 0x84, 0x83, 0x82, 0x81, 0x81,
189 	  0x82, 0x82, 0x82, 0x83, 0x7f, 0x7f, 0x7f, 0x81, 0x80, 0x82, 0x83,
190 	  0x83, 0x84, 0x79, 0x7c, 0x79, 0xb1, 0xa0, 0xaa, 0x00, 0x00, 0x00,
191 	  0x00, 0x00 },
192 	{ 0x00, 0xed, 0x00, 0xf0, 0x00, 0xec, 0x83, 0x83, 0x82, 0x80, 0x80,
193 	  0x81, 0x82, 0x82, 0x82, 0x7f, 0x7f, 0x7e, 0x81, 0x81, 0x82, 0x80,
194 	  0x81, 0x81, 0x84, 0x84, 0x83, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
195 	  0x00, 0x00 },
196 	{ 0x00, 0xf1, 0x00, 0xf4, 0x00, 0xf1, 0x83, 0x82, 0x82, 0x80, 0x80,
197 	  0x81, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x81, 0x7d,
198 	  0x7e, 0x7f, 0x84, 0x84, 0x83, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
199 	  0x00, 0x00 },
200 	{ 0x00, 0xf6, 0x00, 0xf7, 0x00, 0xf5, 0x82, 0x82, 0x81, 0x80, 0x80,
201 	  0x80, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x7f, 0x7f, 0x7f, 0x82,
202 	  0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
203 	  0x00, 0x00 },
204 	{ 0x00, 0xfa, 0x00, 0xfb, 0x00, 0xfa, 0x81, 0x81, 0x81, 0x80, 0x80,
205 	  0x80, 0x82, 0x82, 0x82, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
206 	  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
207 	  0x00, 0x00 },
208 	{ 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80,
209 	  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
210 	  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
211 	  0x00, 0x00 },
212 	{ 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x80, 0x80, 0x80, 0x80, 0x80,
213 	  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
214 	  0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x00, 0x00, 0x00,
215 	  0x00, 0x00 }
216 };
217 
218 unsigned char vint_table[S6E3HA2_VINT_STATUS_MAX] = {
219 	0x18, 0x19, 0x1a, 0x1b, 0x1c,
220 	0x1d, 0x1e, 0x1f, 0x20, 0x21
221 };
222 
223 enum s6e3ha2_type {
224 	HA2_TYPE,
225 	HF2_TYPE,
226 };
227 
228 struct s6e3ha2_panel_desc {
229 	const struct drm_display_mode *mode;
230 	enum s6e3ha2_type type;
231 };
232 
233 struct s6e3ha2 {
234 	struct device *dev;
235 	struct drm_panel panel;
236 	struct backlight_device *bl_dev;
237 
238 	struct regulator_bulk_data supplies[2];
239 	struct gpio_desc *reset_gpio;
240 	struct gpio_desc *enable_gpio;
241 
242 	const struct s6e3ha2_panel_desc *desc;
243 };
244 
245 static int s6e3ha2_dcs_write(struct s6e3ha2 *ctx, const void *data, size_t len)
246 {
247 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
248 
249 	return mipi_dsi_dcs_write_buffer(dsi, data, len);
250 }
251 
252 #define s6e3ha2_dcs_write_seq_static(ctx, seq...) do {	\
253 	static const u8 d[] = { seq };			\
254 	int ret;					\
255 	ret = s6e3ha2_dcs_write(ctx, d, ARRAY_SIZE(d));	\
256 	if (ret < 0)					\
257 		return ret;				\
258 } while (0)
259 
260 #define s6e3ha2_call_write_func(ret, func) do {	\
261 	ret = (func);				\
262 	if (ret < 0)				\
263 		return ret;			\
264 } while (0)
265 
266 static int s6e3ha2_test_key_on_f0(struct s6e3ha2 *ctx)
267 {
268 	s6e3ha2_dcs_write_seq_static(ctx, 0xf0, 0x5a, 0x5a);
269 	return 0;
270 }
271 
272 static int s6e3ha2_test_key_off_f0(struct s6e3ha2 *ctx)
273 {
274 	s6e3ha2_dcs_write_seq_static(ctx, 0xf0, 0xa5, 0xa5);
275 	return 0;
276 }
277 
278 static int s6e3ha2_test_key_on_fc(struct s6e3ha2 *ctx)
279 {
280 	s6e3ha2_dcs_write_seq_static(ctx, 0xfc, 0x5a, 0x5a);
281 	return 0;
282 }
283 
284 static int s6e3ha2_test_key_off_fc(struct s6e3ha2 *ctx)
285 {
286 	s6e3ha2_dcs_write_seq_static(ctx, 0xfc, 0xa5, 0xa5);
287 	return 0;
288 }
289 
290 static int s6e3ha2_single_dsi_set(struct s6e3ha2 *ctx)
291 {
292 	s6e3ha2_dcs_write_seq_static(ctx, 0xf2, 0x67);
293 	s6e3ha2_dcs_write_seq_static(ctx, 0xf9, 0x09);
294 	return 0;
295 }
296 
297 static int s6e3ha2_freq_calibration(struct s6e3ha2 *ctx)
298 {
299 	s6e3ha2_dcs_write_seq_static(ctx, 0xfd, 0x1c);
300 	if (ctx->desc->type == HF2_TYPE)
301 		s6e3ha2_dcs_write_seq_static(ctx, 0xf2, 0x67, 0x40, 0xc5);
302 	s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x20, 0x39);
303 	s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0xa0);
304 	s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x20);
305 
306 	if (ctx->desc->type == HA2_TYPE)
307 		s6e3ha2_dcs_write_seq_static(ctx, 0xce, 0x03, 0x3b, 0x12, 0x62,
308 						  0x40, 0x80, 0xc0, 0x28, 0x28,
309 						  0x28, 0x28, 0x39, 0xc5);
310 	else
311 		s6e3ha2_dcs_write_seq_static(ctx, 0xce, 0x03, 0x3b, 0x14, 0x6d,
312 						  0x40, 0x80, 0xc0, 0x28, 0x28,
313 						  0x28, 0x28, 0x39, 0xc5);
314 
315 	return 0;
316 }
317 
318 static int s6e3ha2_aor_control(struct s6e3ha2 *ctx)
319 {
320 	s6e3ha2_dcs_write_seq_static(ctx, 0xb2, 0x03, 0x10);
321 	return 0;
322 }
323 
324 static int s6e3ha2_caps_elvss_set(struct s6e3ha2 *ctx)
325 {
326 	s6e3ha2_dcs_write_seq_static(ctx, 0xb6, 0x9c, 0x0a);
327 	return 0;
328 }
329 
330 static int s6e3ha2_acl_off(struct s6e3ha2 *ctx)
331 {
332 	s6e3ha2_dcs_write_seq_static(ctx, 0x55, 0x00);
333 	return 0;
334 }
335 
336 static int s6e3ha2_acl_off_opr(struct s6e3ha2 *ctx)
337 {
338 	s6e3ha2_dcs_write_seq_static(ctx, 0xb5, 0x40);
339 	return 0;
340 }
341 
342 static int s6e3ha2_test_global(struct s6e3ha2 *ctx)
343 {
344 	s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x07);
345 	return 0;
346 }
347 
348 static int s6e3ha2_test(struct s6e3ha2 *ctx)
349 {
350 	s6e3ha2_dcs_write_seq_static(ctx, 0xb8, 0x19);
351 	return 0;
352 }
353 
354 static int s6e3ha2_touch_hsync_on1(struct s6e3ha2 *ctx)
355 {
356 	s6e3ha2_dcs_write_seq_static(ctx, 0xbd, 0x33, 0x11, 0x02,
357 					0x16, 0x02, 0x16);
358 	return 0;
359 }
360 
361 static int s6e3ha2_pentile_control(struct s6e3ha2 *ctx)
362 {
363 	s6e3ha2_dcs_write_seq_static(ctx, 0xc0, 0x00, 0x00, 0xd8, 0xd8);
364 	return 0;
365 }
366 
367 static int s6e3ha2_poc_global(struct s6e3ha2 *ctx)
368 {
369 	s6e3ha2_dcs_write_seq_static(ctx, 0xb0, 0x20);
370 	return 0;
371 }
372 
373 static int s6e3ha2_poc_setting(struct s6e3ha2 *ctx)
374 {
375 	s6e3ha2_dcs_write_seq_static(ctx, 0xfe, 0x08);
376 	return 0;
377 }
378 
379 static int s6e3ha2_pcd_set_off(struct s6e3ha2 *ctx)
380 {
381 	s6e3ha2_dcs_write_seq_static(ctx, 0xcc, 0x40, 0x51);
382 	return 0;
383 }
384 
385 static int s6e3ha2_err_fg_set(struct s6e3ha2 *ctx)
386 {
387 	s6e3ha2_dcs_write_seq_static(ctx, 0xed, 0x44);
388 	return 0;
389 }
390 
391 static int s6e3ha2_hbm_off(struct s6e3ha2 *ctx)
392 {
393 	s6e3ha2_dcs_write_seq_static(ctx, 0x53, 0x00);
394 	return 0;
395 }
396 
397 static int s6e3ha2_te_start_setting(struct s6e3ha2 *ctx)
398 {
399 	s6e3ha2_dcs_write_seq_static(ctx, 0xb9, 0x10, 0x09, 0xff, 0x00, 0x09);
400 	return 0;
401 }
402 
403 static int s6e3ha2_gamma_update(struct s6e3ha2 *ctx)
404 {
405 	s6e3ha2_dcs_write_seq_static(ctx, 0xf7, 0x03);
406 	ndelay(100); /* need for 100ns delay */
407 	s6e3ha2_dcs_write_seq_static(ctx, 0xf7, 0x00);
408 	return 0;
409 }
410 
411 static int s6e3ha2_get_brightness(struct backlight_device *bl_dev)
412 {
413 	return bl_dev->props.brightness;
414 }
415 
416 static int s6e3ha2_set_vint(struct s6e3ha2 *ctx)
417 {
418 	struct backlight_device *bl_dev = ctx->bl_dev;
419 	unsigned int brightness = bl_dev->props.brightness;
420 	unsigned char data[] = { 0xf4, 0x8b,
421 			vint_table[brightness * (S6E3HA2_VINT_STATUS_MAX - 1) /
422 			S6E3HA2_MAX_BRIGHTNESS] };
423 
424 	return s6e3ha2_dcs_write(ctx, data, ARRAY_SIZE(data));
425 }
426 
427 static unsigned int s6e3ha2_get_brightness_index(unsigned int brightness)
428 {
429 	return (brightness * (S6E3HA2_NUM_GAMMA_STEPS - 1)) /
430 		S6E3HA2_MAX_BRIGHTNESS;
431 }
432 
433 static int s6e3ha2_update_gamma(struct s6e3ha2 *ctx, unsigned int brightness)
434 {
435 	struct backlight_device *bl_dev = ctx->bl_dev;
436 	unsigned int index = s6e3ha2_get_brightness_index(brightness);
437 	u8 data[S6E3HA2_GAMMA_CMD_CNT + 1] = { 0xca, };
438 	int ret;
439 
440 	memcpy(data + 1, gamma_tbl + index, S6E3HA2_GAMMA_CMD_CNT);
441 	s6e3ha2_call_write_func(ret,
442 				s6e3ha2_dcs_write(ctx, data, ARRAY_SIZE(data)));
443 
444 	s6e3ha2_call_write_func(ret, s6e3ha2_gamma_update(ctx));
445 	bl_dev->props.brightness = brightness;
446 
447 	return 0;
448 }
449 
450 static int s6e3ha2_set_brightness(struct backlight_device *bl_dev)
451 {
452 	struct s6e3ha2 *ctx = bl_get_data(bl_dev);
453 	unsigned int brightness = bl_dev->props.brightness;
454 	int ret;
455 
456 	if (brightness < S6E3HA2_MIN_BRIGHTNESS ||
457 		brightness > bl_dev->props.max_brightness) {
458 		dev_err(ctx->dev, "Invalid brightness: %u\n", brightness);
459 		return -EINVAL;
460 	}
461 
462 	if (bl_dev->props.power > FB_BLANK_NORMAL)
463 		return -EPERM;
464 
465 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_on_f0(ctx));
466 	s6e3ha2_call_write_func(ret, s6e3ha2_update_gamma(ctx, brightness));
467 	s6e3ha2_call_write_func(ret, s6e3ha2_aor_control(ctx));
468 	s6e3ha2_call_write_func(ret, s6e3ha2_set_vint(ctx));
469 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_off_f0(ctx));
470 
471 	return 0;
472 }
473 
474 static const struct backlight_ops s6e3ha2_bl_ops = {
475 	.get_brightness = s6e3ha2_get_brightness,
476 	.update_status = s6e3ha2_set_brightness,
477 };
478 
479 static int s6e3ha2_panel_init(struct s6e3ha2 *ctx)
480 {
481 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
482 	int ret;
483 
484 	s6e3ha2_call_write_func(ret, mipi_dsi_dcs_exit_sleep_mode(dsi));
485 	usleep_range(5000, 6000);
486 
487 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_on_f0(ctx));
488 	s6e3ha2_call_write_func(ret, s6e3ha2_single_dsi_set(ctx));
489 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_on_fc(ctx));
490 	s6e3ha2_call_write_func(ret, s6e3ha2_freq_calibration(ctx));
491 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_off_fc(ctx));
492 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_off_f0(ctx));
493 
494 	return 0;
495 }
496 
497 static int s6e3ha2_power_off(struct s6e3ha2 *ctx)
498 {
499 	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
500 }
501 
502 static int s6e3ha2_disable(struct drm_panel *panel)
503 {
504 	struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
505 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
506 	int ret;
507 
508 	s6e3ha2_call_write_func(ret, mipi_dsi_dcs_enter_sleep_mode(dsi));
509 	s6e3ha2_call_write_func(ret, mipi_dsi_dcs_set_display_off(dsi));
510 
511 	msleep(40);
512 	ctx->bl_dev->props.power = FB_BLANK_NORMAL;
513 
514 	return 0;
515 }
516 
517 static int s6e3ha2_unprepare(struct drm_panel *panel)
518 {
519 	struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
520 
521 	return s6e3ha2_power_off(ctx);
522 }
523 
524 static int s6e3ha2_power_on(struct s6e3ha2 *ctx)
525 {
526 	int ret;
527 
528 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
529 	if (ret < 0)
530 		return ret;
531 
532 	msleep(120);
533 
534 	gpiod_set_value(ctx->enable_gpio, 0);
535 	usleep_range(5000, 6000);
536 	gpiod_set_value(ctx->enable_gpio, 1);
537 
538 	gpiod_set_value(ctx->reset_gpio, 1);
539 	usleep_range(5000, 6000);
540 	gpiod_set_value(ctx->reset_gpio, 0);
541 	usleep_range(5000, 6000);
542 
543 	return 0;
544 }
545 static int s6e3ha2_prepare(struct drm_panel *panel)
546 {
547 	struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
548 	int ret;
549 
550 	ret = s6e3ha2_power_on(ctx);
551 	if (ret < 0)
552 		return ret;
553 
554 	ret = s6e3ha2_panel_init(ctx);
555 	if (ret < 0)
556 		goto err;
557 
558 	ctx->bl_dev->props.power = FB_BLANK_NORMAL;
559 
560 	return 0;
561 
562 err:
563 	s6e3ha2_power_off(ctx);
564 	return ret;
565 }
566 
567 static int s6e3ha2_enable(struct drm_panel *panel)
568 {
569 	struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
570 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
571 	int ret;
572 
573 	/* common setting */
574 	s6e3ha2_call_write_func(ret,
575 		mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK));
576 
577 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_on_f0(ctx));
578 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_on_fc(ctx));
579 	s6e3ha2_call_write_func(ret, s6e3ha2_touch_hsync_on1(ctx));
580 	s6e3ha2_call_write_func(ret, s6e3ha2_pentile_control(ctx));
581 	s6e3ha2_call_write_func(ret, s6e3ha2_poc_global(ctx));
582 	s6e3ha2_call_write_func(ret, s6e3ha2_poc_setting(ctx));
583 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_off_fc(ctx));
584 
585 	/* pcd setting off for TB */
586 	s6e3ha2_call_write_func(ret, s6e3ha2_pcd_set_off(ctx));
587 	s6e3ha2_call_write_func(ret, s6e3ha2_err_fg_set(ctx));
588 	s6e3ha2_call_write_func(ret, s6e3ha2_te_start_setting(ctx));
589 
590 	/* brightness setting */
591 	s6e3ha2_call_write_func(ret, s6e3ha2_set_brightness(ctx->bl_dev));
592 	s6e3ha2_call_write_func(ret, s6e3ha2_aor_control(ctx));
593 	s6e3ha2_call_write_func(ret, s6e3ha2_caps_elvss_set(ctx));
594 	s6e3ha2_call_write_func(ret, s6e3ha2_gamma_update(ctx));
595 	s6e3ha2_call_write_func(ret, s6e3ha2_acl_off(ctx));
596 	s6e3ha2_call_write_func(ret, s6e3ha2_acl_off_opr(ctx));
597 	s6e3ha2_call_write_func(ret, s6e3ha2_hbm_off(ctx));
598 
599 	/* elvss temp compensation */
600 	s6e3ha2_call_write_func(ret, s6e3ha2_test_global(ctx));
601 	s6e3ha2_call_write_func(ret, s6e3ha2_test(ctx));
602 	s6e3ha2_call_write_func(ret, s6e3ha2_test_key_off_f0(ctx));
603 
604 	s6e3ha2_call_write_func(ret, mipi_dsi_dcs_set_display_on(dsi));
605 	ctx->bl_dev->props.power = FB_BLANK_UNBLANK;
606 
607 	return 0;
608 }
609 
610 static const struct drm_display_mode s6e3ha2_mode = {
611 	.clock = 222372,
612 	.hdisplay = 1440,
613 	.hsync_start = 1440 + 1,
614 	.hsync_end = 1440 + 1 + 1,
615 	.htotal = 1440 + 1 + 1 + 1,
616 	.vdisplay = 2560,
617 	.vsync_start = 2560 + 1,
618 	.vsync_end = 2560 + 1 + 1,
619 	.vtotal = 2560 + 1 + 1 + 15,
620 	.flags = 0,
621 };
622 
623 static const struct s6e3ha2_panel_desc samsung_s6e3ha2 = {
624 	.mode = &s6e3ha2_mode,
625 	.type = HA2_TYPE,
626 };
627 
628 static const struct drm_display_mode s6e3hf2_mode = {
629 	.clock = 247856,
630 	.hdisplay = 1600,
631 	.hsync_start = 1600 + 1,
632 	.hsync_end = 1600 + 1 + 1,
633 	.htotal = 1600 + 1 + 1 + 1,
634 	.vdisplay = 2560,
635 	.vsync_start = 2560 + 1,
636 	.vsync_end = 2560 + 1 + 1,
637 	.vtotal = 2560 + 1 + 1 + 15,
638 	.flags = 0,
639 };
640 
641 static const struct s6e3ha2_panel_desc samsung_s6e3hf2 = {
642 	.mode = &s6e3hf2_mode,
643 	.type = HF2_TYPE,
644 };
645 
646 static int s6e3ha2_get_modes(struct drm_panel *panel,
647 			     struct drm_connector *connector)
648 {
649 	struct s6e3ha2 *ctx = container_of(panel, struct s6e3ha2, panel);
650 	struct drm_display_mode *mode;
651 
652 	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
653 	if (!mode) {
654 		DRM_ERROR("failed to add mode %ux%ux@%u\n",
655 			ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
656 			drm_mode_vrefresh(ctx->desc->mode));
657 		return -ENOMEM;
658 	}
659 
660 	drm_mode_set_name(mode);
661 
662 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
663 	drm_mode_probed_add(connector, mode);
664 
665 	connector->display_info.width_mm = 71;
666 	connector->display_info.height_mm = 125;
667 
668 	return 1;
669 }
670 
671 static const struct drm_panel_funcs s6e3ha2_drm_funcs = {
672 	.disable = s6e3ha2_disable,
673 	.unprepare = s6e3ha2_unprepare,
674 	.prepare = s6e3ha2_prepare,
675 	.enable = s6e3ha2_enable,
676 	.get_modes = s6e3ha2_get_modes,
677 };
678 
679 static int s6e3ha2_probe(struct mipi_dsi_device *dsi)
680 {
681 	struct device *dev = &dsi->dev;
682 	struct s6e3ha2 *ctx;
683 	int ret;
684 
685 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
686 	if (!ctx)
687 		return -ENOMEM;
688 
689 	mipi_dsi_set_drvdata(dsi, ctx);
690 
691 	ctx->dev = dev;
692 	ctx->desc = of_device_get_match_data(dev);
693 
694 	dsi->lanes = 4;
695 	dsi->format = MIPI_DSI_FMT_RGB888;
696 	dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS;
697 
698 	ctx->supplies[0].supply = "vdd3";
699 	ctx->supplies[1].supply = "vci";
700 
701 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
702 				      ctx->supplies);
703 	if (ret < 0) {
704 		dev_err(dev, "failed to get regulators: %d\n", ret);
705 		return ret;
706 	}
707 
708 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
709 	if (IS_ERR(ctx->reset_gpio)) {
710 		dev_err(dev, "cannot get reset-gpios %ld\n",
711 			PTR_ERR(ctx->reset_gpio));
712 		return PTR_ERR(ctx->reset_gpio);
713 	}
714 
715 	ctx->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
716 	if (IS_ERR(ctx->enable_gpio)) {
717 		dev_err(dev, "cannot get enable-gpios %ld\n",
718 			PTR_ERR(ctx->enable_gpio));
719 		return PTR_ERR(ctx->enable_gpio);
720 	}
721 
722 	ctx->bl_dev = backlight_device_register("s6e3ha2", dev, ctx,
723 						&s6e3ha2_bl_ops, NULL);
724 	if (IS_ERR(ctx->bl_dev)) {
725 		dev_err(dev, "failed to register backlight device\n");
726 		return PTR_ERR(ctx->bl_dev);
727 	}
728 
729 	ctx->bl_dev->props.max_brightness = S6E3HA2_MAX_BRIGHTNESS;
730 	ctx->bl_dev->props.brightness = S6E3HA2_DEFAULT_BRIGHTNESS;
731 	ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;
732 
733 	drm_panel_init(&ctx->panel, dev, &s6e3ha2_drm_funcs,
734 		       DRM_MODE_CONNECTOR_DSI);
735 
736 	ret = drm_panel_add(&ctx->panel);
737 	if (ret < 0)
738 		goto unregister_backlight;
739 
740 	ret = mipi_dsi_attach(dsi);
741 	if (ret < 0)
742 		goto remove_panel;
743 
744 	return ret;
745 
746 remove_panel:
747 	drm_panel_remove(&ctx->panel);
748 
749 unregister_backlight:
750 	backlight_device_unregister(ctx->bl_dev);
751 
752 	return ret;
753 }
754 
755 static int s6e3ha2_remove(struct mipi_dsi_device *dsi)
756 {
757 	struct s6e3ha2 *ctx = mipi_dsi_get_drvdata(dsi);
758 
759 	mipi_dsi_detach(dsi);
760 	drm_panel_remove(&ctx->panel);
761 	backlight_device_unregister(ctx->bl_dev);
762 
763 	return 0;
764 }
765 
766 static const struct of_device_id s6e3ha2_of_match[] = {
767 	{ .compatible = "samsung,s6e3ha2", .data = &samsung_s6e3ha2 },
768 	{ .compatible = "samsung,s6e3hf2", .data = &samsung_s6e3hf2 },
769 	{ }
770 };
771 MODULE_DEVICE_TABLE(of, s6e3ha2_of_match);
772 
773 static struct mipi_dsi_driver s6e3ha2_driver = {
774 	.probe = s6e3ha2_probe,
775 	.remove = s6e3ha2_remove,
776 	.driver = {
777 		.name = "panel-samsung-s6e3ha2",
778 		.of_match_table = s6e3ha2_of_match,
779 	},
780 };
781 module_mipi_dsi_driver(s6e3ha2_driver);
782 
783 MODULE_AUTHOR("Donghwa Lee <dh09.lee@samsung.com>");
784 MODULE_AUTHOR("Hyungwon Hwang <human.hwang@samsung.com>");
785 MODULE_AUTHOR("Hoegeun Kwon <hoegeun.kwon@samsung.com>");
786 MODULE_DESCRIPTION("MIPI-DSI based s6e3ha2 AMOLED Panel Driver");
787 MODULE_LICENSE("GPL v2");
788