This source file includes following definitions.
- init_display
- set_addr_win
- set_var
- set_gamma
1
2
3
4
5
6
7
8
9
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/gpio/consumer.h>
14
15 #include "fbtft.h"
16
17 #define DRVNAME "fb_ssd1289"
18 #define WIDTH 240
19 #define HEIGHT 320
20 #define DEFAULT_GAMMA "02 03 2 5 7 7 4 2 4 2\n" \
21 "02 03 2 5 7 5 4 2 4 2"
22
23 static unsigned int reg11 = 0x6040;
24 module_param(reg11, uint, 0000);
25 MODULE_PARM_DESC(reg11, "Register 11h value");
26
27 static int init_display(struct fbtft_par *par)
28 {
29 par->fbtftops.reset(par);
30
31 if (par->gpio.cs)
32 gpiod_set_value(par->gpio.cs, 0);
33
34 write_reg(par, 0x00, 0x0001);
35 write_reg(par, 0x03, 0xA8A4);
36 write_reg(par, 0x0C, 0x0000);
37 write_reg(par, 0x0D, 0x080C);
38 write_reg(par, 0x0E, 0x2B00);
39 write_reg(par, 0x1E, 0x00B7);
40 write_reg(par, 0x01,
41 BIT(13) | (par->bgr << 11) | BIT(9) | (HEIGHT - 1));
42 write_reg(par, 0x02, 0x0600);
43 write_reg(par, 0x10, 0x0000);
44 write_reg(par, 0x05, 0x0000);
45 write_reg(par, 0x06, 0x0000);
46 write_reg(par, 0x16, 0xEF1C);
47 write_reg(par, 0x17, 0x0003);
48 write_reg(par, 0x07, 0x0233);
49 write_reg(par, 0x0B, 0x0000);
50 write_reg(par, 0x0F, 0x0000);
51 write_reg(par, 0x41, 0x0000);
52 write_reg(par, 0x42, 0x0000);
53 write_reg(par, 0x48, 0x0000);
54 write_reg(par, 0x49, 0x013F);
55 write_reg(par, 0x4A, 0x0000);
56 write_reg(par, 0x4B, 0x0000);
57 write_reg(par, 0x44, 0xEF00);
58 write_reg(par, 0x45, 0x0000);
59 write_reg(par, 0x46, 0x013F);
60 write_reg(par, 0x23, 0x0000);
61 write_reg(par, 0x24, 0x0000);
62 write_reg(par, 0x25, 0x8000);
63 write_reg(par, 0x4f, 0x0000);
64 write_reg(par, 0x4e, 0x0000);
65 write_reg(par, 0x22);
66 return 0;
67 }
68
69 static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
70 {
71 switch (par->info->var.rotate) {
72
73
74 case 0:
75 write_reg(par, 0x4e, xs);
76 write_reg(par, 0x4f, ys);
77 break;
78 case 180:
79 write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
80 write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
81 break;
82 case 270:
83 write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
84 write_reg(par, 0x4f, xs);
85 break;
86 case 90:
87 write_reg(par, 0x4e, ys);
88 write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
89 break;
90 }
91
92
93 write_reg(par, 0x22);
94 }
95
96 static int set_var(struct fbtft_par *par)
97 {
98 if (par->fbtftops.init_display != init_display) {
99
100 fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
101 "%s: skipping since custom init_display() is used\n",
102 __func__);
103 return 0;
104 }
105
106 switch (par->info->var.rotate) {
107 case 0:
108 write_reg(par, 0x11, reg11 | 0x30);
109 break;
110 case 270:
111 write_reg(par, 0x11, reg11 | 0x28);
112 break;
113 case 180:
114 write_reg(par, 0x11, reg11 | 0x00);
115 break;
116 case 90:
117 write_reg(par, 0x11, reg11 | 0x18);
118 break;
119 }
120
121 return 0;
122 }
123
124
125
126
127
128
129 #define CURVE(num, idx) curves[(num) * par->gamma.num_values + (idx)]
130 static int set_gamma(struct fbtft_par *par, u32 *curves)
131 {
132 static const unsigned long mask[] = {
133 0x1f, 0x1f, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
134 0x1f, 0x1f, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07, 0x07,
135 };
136 int i, j;
137
138
139 for (i = 0; i < 2; i++)
140 for (j = 0; j < 10; j++)
141 CURVE(i, j) &= mask[i * par->gamma.num_values + j];
142
143 write_reg(par, 0x0030, CURVE(0, 5) << 8 | CURVE(0, 4));
144 write_reg(par, 0x0031, CURVE(0, 7) << 8 | CURVE(0, 6));
145 write_reg(par, 0x0032, CURVE(0, 9) << 8 | CURVE(0, 8));
146 write_reg(par, 0x0033, CURVE(0, 3) << 8 | CURVE(0, 2));
147 write_reg(par, 0x0034, CURVE(1, 5) << 8 | CURVE(1, 4));
148 write_reg(par, 0x0035, CURVE(1, 7) << 8 | CURVE(1, 6));
149 write_reg(par, 0x0036, CURVE(1, 9) << 8 | CURVE(1, 8));
150 write_reg(par, 0x0037, CURVE(1, 3) << 8 | CURVE(1, 2));
151 write_reg(par, 0x003A, CURVE(0, 1) << 8 | CURVE(0, 0));
152 write_reg(par, 0x003B, CURVE(1, 1) << 8 | CURVE(1, 0));
153
154 return 0;
155 }
156
157 #undef CURVE
158
159 static struct fbtft_display display = {
160 .regwidth = 16,
161 .width = WIDTH,
162 .height = HEIGHT,
163 .gamma_num = 2,
164 .gamma_len = 10,
165 .gamma = DEFAULT_GAMMA,
166 .fbtftops = {
167 .init_display = init_display,
168 .set_addr_win = set_addr_win,
169 .set_var = set_var,
170 .set_gamma = set_gamma,
171 },
172 };
173
174 FBTFT_REGISTER_DRIVER(DRVNAME, "solomon,ssd1289", &display);
175
176 MODULE_ALIAS("spi:" DRVNAME);
177 MODULE_ALIAS("platform:" DRVNAME);
178 MODULE_ALIAS("spi:ssd1289");
179 MODULE_ALIAS("platform:ssd1289");
180
181 MODULE_DESCRIPTION("FB driver for the SSD1289 LCD Controller");
182 MODULE_AUTHOR("Noralf Tronnes");
183 MODULE_LICENSE("GPL");