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