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3b143b55 KA |
1 | /* |
2 | * FB driver for the ILI9163 LCD Controller | |
3 | * | |
4 | * Copyright (C) 2015 Kozhevnikov Anatoly | |
5 | * | |
6 | * Based on ili9325.c by Noralf Tronnes and | |
7 | * .S.U.M.O.T.O.Y. by Max MC Costa (https://github.com/sumotoy/TFT_ILI9163C). | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/gpio.h> | |
24 | #include <linux/delay.h> | |
13c12269 | 25 | #include <video/mipi_display.h> |
3b143b55 KA |
26 | |
27 | #include "fbtft.h" | |
28 | ||
29 | #define DRVNAME "fb_ili9163" | |
30 | #define WIDTH 128 | |
31 | #define HEIGHT 128 | |
32 | #define BPP 16 | |
33 | #define FPS 30 | |
34 | ||
35 | #ifdef GAMMA_ADJ | |
36 | #define GAMMA_LEN 15 | |
37 | #define GAMMA_NUM 1 | |
38 | #define DEFAULT_GAMMA "36 29 12 22 1C 15 42 B7 2F 13 12 0A 11 0B 06\n" | |
39 | #endif | |
40 | ||
41 | /* ILI9163C commands */ | |
3a334ea5 ERR |
42 | #define CMD_FRMCTR1 0xB1 /* Frame Rate Control */ |
43 | /* (In normal mode/Full colors) */ | |
3b143b55 | 44 | #define CMD_FRMCTR2 0xB2 /* Frame Rate Control (In Idle mode/8-colors) */ |
3a334ea5 ERR |
45 | #define CMD_FRMCTR3 0xB3 /* Frame Rate Control */ |
46 | /* (In Partial mode/full colors) */ | |
3b143b55 KA |
47 | #define CMD_DINVCTR 0xB4 /* Display Inversion Control */ |
48 | #define CMD_RGBBLK 0xB5 /* RGB Interface Blanking Porch setting */ | |
49 | #define CMD_DFUNCTR 0xB6 /* Display Function set 5 */ | |
50 | #define CMD_SDRVDIR 0xB7 /* Source Driver Direction Control */ | |
51 | #define CMD_GDRVDIR 0xB8 /* Gate Driver Direction Control */ | |
52 | ||
53 | #define CMD_PWCTR1 0xC0 /* Power_Control1 */ | |
54 | #define CMD_PWCTR2 0xC1 /* Power_Control2 */ | |
55 | #define CMD_PWCTR3 0xC2 /* Power_Control3 */ | |
56 | #define CMD_PWCTR4 0xC3 /* Power_Control4 */ | |
57 | #define CMD_PWCTR5 0xC4 /* Power_Control5 */ | |
58 | #define CMD_VCOMCTR1 0xC5 /* VCOM_Control 1 */ | |
59 | #define CMD_VCOMCTR2 0xC6 /* VCOM_Control 2 */ | |
60 | #define CMD_VCOMOFFS 0xC7 /* VCOM Offset Control */ | |
61 | #define CMD_PGAMMAC 0xE0 /* Positive Gamma Correction Setting */ | |
62 | #define CMD_NGAMMAC 0xE1 /* Negative Gamma Correction Setting */ | |
63 | #define CMD_GAMRSEL 0xF2 /* GAM_R_SEL */ | |
64 | ||
65 | /* | |
3a334ea5 ERR |
66 | * This display: |
67 | * http://www.ebay.com/itm/Replace-Nokia-5110-LCD-1-44-Red-Serial-128X128-SPI- | |
68 | * Color-TFT-LCD-Display-Module-/271422122271 | |
69 | * This particular display has a design error! The controller has 3 pins to | |
70 | * configure to constrain the memory and resolution to a fixed dimension (in | |
71 | * that case 128x128) but they leaved those pins configured for 128x160 so | |
72 | * there was several pixel memory addressing problems. | |
73 | * I solved by setup several parameters that dinamically fix the resolution as | |
74 | * needit so below the parameters for this display. If you have a strain or a | |
75 | * correct display (can happen with chinese) you can copy those parameters and | |
76 | * create setup for different displays. | |
77 | */ | |
3b143b55 KA |
78 | |
79 | #ifdef RED | |
80 | #define __OFFSET 32 /*see note 2 - this is the red version */ | |
81 | #else | |
82 | #define __OFFSET 0 /*see note 2 - this is the black version */ | |
83 | #endif | |
84 | ||
85 | static int init_display(struct fbtft_par *par) | |
86 | { | |
3b143b55 KA |
87 | par->fbtftops.reset(par); |
88 | ||
89 | if (par->gpio.cs != -1) | |
90 | gpio_set_value(par->gpio.cs, 0); /* Activate chip */ | |
91 | ||
13c12269 | 92 | write_reg(par, MIPI_DCS_SOFT_RESET); /* software reset */ |
3b143b55 | 93 | mdelay(500); |
13c12269 | 94 | write_reg(par, MIPI_DCS_EXIT_SLEEP_MODE); /* exit sleep */ |
3b143b55 | 95 | mdelay(5); |
13c12269 PL |
96 | write_reg(par, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT); |
97 | /* default gamma curve 3 */ | |
98 | write_reg(par, MIPI_DCS_SET_GAMMA_CURVE, 0x02); | |
3b143b55 KA |
99 | #ifdef GAMMA_ADJ |
100 | write_reg(par, CMD_GAMRSEL, 0x01); /* Enable Gamma adj */ | |
101 | #endif | |
13c12269 | 102 | write_reg(par, MIPI_DCS_ENTER_NORMAL_MODE); |
3b143b55 KA |
103 | write_reg(par, CMD_DFUNCTR, 0xff, 0x06); |
104 | /* Frame Rate Control (In normal mode/Full colors) */ | |
105 | write_reg(par, CMD_FRMCTR1, 0x08, 0x02); | |
106 | write_reg(par, CMD_DINVCTR, 0x07); /* display inversion */ | |
107 | /* Set VRH1[4:0] & VC[2:0] for VCI1 & GVDD */ | |
108 | write_reg(par, CMD_PWCTR1, 0x0A, 0x02); | |
109 | /* Set BT[2:0] for AVDD & VCL & VGH & VGL */ | |
110 | write_reg(par, CMD_PWCTR2, 0x02); | |
111 | /* Set VMH[6:0] & VML[6:0] for VOMH & VCOML */ | |
112 | write_reg(par, CMD_VCOMCTR1, 0x50, 0x63); | |
113 | write_reg(par, CMD_VCOMOFFS, 0); | |
114 | ||
13c12269 PL |
115 | write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, 0, 0, 0, WIDTH); |
116 | write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, 0, 0, 0, HEIGHT); | |
3b143b55 | 117 | |
13c12269 PL |
118 | write_reg(par, MIPI_DCS_SET_DISPLAY_ON); /* display ON */ |
119 | write_reg(par, MIPI_DCS_WRITE_MEMORY_START); /* Memory Write */ | |
3b143b55 KA |
120 | |
121 | return 0; | |
122 | } | |
123 | ||
124 | static void set_addr_win(struct fbtft_par *par, int xs, int ys, | |
f07e89ce | 125 | int xe, int ye) |
3b143b55 | 126 | { |
3b143b55 KA |
127 | switch (par->info->var.rotate) { |
128 | case 0: | |
13c12269 PL |
129 | write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, |
130 | xs >> 8, xs & 0xff, xe >> 8, xe & 0xff); | |
131 | write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, | |
132 | (ys + __OFFSET) >> 8, (ys + __OFFSET) & 0xff, | |
133 | (ye + __OFFSET) >> 8, (ye + __OFFSET) & 0xff); | |
3b143b55 KA |
134 | break; |
135 | case 90: | |
13c12269 PL |
136 | write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, |
137 | (xs + __OFFSET) >> 8, (xs + __OFFSET) & 0xff, | |
138 | (xe + __OFFSET) >> 8, (xe + __OFFSET) & 0xff); | |
139 | write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, | |
140 | ys >> 8, ys & 0xff, ye >> 8, ye & 0xff); | |
3b143b55 KA |
141 | break; |
142 | case 180: | |
143 | case 270: | |
13c12269 PL |
144 | write_reg(par, MIPI_DCS_SET_COLUMN_ADDRESS, |
145 | xs >> 8, xs & 0xff, xe >> 8, xe & 0xff); | |
146 | write_reg(par, MIPI_DCS_SET_PAGE_ADDRESS, | |
147 | ys >> 8, ys & 0xff, ye >> 8, ye & 0xff); | |
3b143b55 KA |
148 | break; |
149 | default: | |
13c12269 PL |
150 | /* Fix incorrect setting */ |
151 | par->info->var.rotate = 0; | |
3b143b55 | 152 | } |
13c12269 | 153 | write_reg(par, MIPI_DCS_WRITE_MEMORY_START); |
3b143b55 KA |
154 | } |
155 | ||
156 | /* | |
3a334ea5 ERR |
157 | * 7) MY: 1(bottom to top), 0(top to bottom) Row Address Order |
158 | * 6) MX: 1(R to L), 0(L to R) Column Address Order | |
159 | * 5) MV: 1(Exchanged), 0(normal) Row/Column exchange | |
160 | * 4) ML: 1(bottom to top), 0(top to bottom) Vertical Refresh Order | |
161 | * 3) RGB: 1(BGR), 0(RGB) Color Space | |
162 | * 2) MH: 1(R to L), 0(L to R) Horizontal Refresh Order | |
163 | * 1) | |
164 | * 0) | |
165 | * | |
166 | * MY, MX, MV, ML,RGB, MH, D1, D0 | |
167 | * 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //normal | |
168 | * 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //Y-Mirror | |
169 | * 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Mirror | |
170 | * 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Y-Mirror | |
171 | * 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange | |
172 | * 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange, Y-Mirror | |
173 | * 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 //XY exchange | |
174 | * 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |
175 | */ | |
3b143b55 KA |
176 | static int set_var(struct fbtft_par *par) |
177 | { | |
178 | u8 mactrl_data = 0; /* Avoid compiler warning */ | |
179 | ||
3b143b55 KA |
180 | switch (par->info->var.rotate) { |
181 | case 0: | |
182 | mactrl_data = 0x08; | |
183 | break; | |
184 | case 180: | |
185 | mactrl_data = 0xC8; | |
186 | break; | |
187 | case 270: | |
188 | mactrl_data = 0xA8; | |
189 | break; | |
190 | case 90: | |
191 | mactrl_data = 0x68; | |
192 | break; | |
193 | } | |
194 | ||
195 | /* Colorspcae */ | |
196 | if (par->bgr) | |
197 | mactrl_data |= (1 << 2); | |
13c12269 PL |
198 | write_reg(par, MIPI_DCS_SET_ADDRESS_MODE, mactrl_data); |
199 | write_reg(par, MIPI_DCS_WRITE_MEMORY_START); | |
3b143b55 KA |
200 | return 0; |
201 | } | |
202 | ||
203 | #ifdef GAMMA_ADJ | |
94c0a544 | 204 | #define CURVE(num, idx) curves[num * par->gamma.num_values + idx] |
3b143b55 KA |
205 | static int gamma_adj(struct fbtft_par *par, unsigned long *curves) |
206 | { | |
207 | unsigned long mask[] = { | |
208 | 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, | |
209 | 0x1f, 0x3f, 0x0f, 0x0f, 0x7f, 0x1f, | |
210 | 0x3F, 0x3F, 0x3F, 0x3F, 0x3F}; | |
211 | int i, j; | |
212 | ||
3b143b55 KA |
213 | for (i = 0; i < GAMMA_NUM; i++) |
214 | for (j = 0; j < GAMMA_LEN; j++) | |
94c0a544 | 215 | CURVE(i, j) &= mask[i * par->gamma.num_values + j]; |
3b143b55 KA |
216 | |
217 | write_reg(par, CMD_PGAMMAC, | |
f07e89ce ERR |
218 | CURVE(0, 0), |
219 | CURVE(0, 1), | |
220 | CURVE(0, 2), | |
221 | CURVE(0, 3), | |
222 | CURVE(0, 4), | |
223 | CURVE(0, 5), | |
224 | CURVE(0, 6), | |
225 | (CURVE(0, 7) << 4) | CURVE(0, 8), | |
226 | CURVE(0, 9), | |
227 | CURVE(0, 10), | |
228 | CURVE(0, 11), | |
229 | CURVE(0, 12), | |
230 | CURVE(0, 13), | |
231 | CURVE(0, 14), | |
232 | CURVE(0, 15)); | |
3b143b55 | 233 | |
13c12269 PL |
234 | /* Write Data to GRAM mode */ |
235 | write_reg(par, MIPI_DCS_WRITE_MEMORY_START); | |
3b143b55 KA |
236 | |
237 | return 0; | |
238 | } | |
b4ac6b28 | 239 | |
3b143b55 KA |
240 | #undef CURVE |
241 | #endif | |
242 | ||
243 | static struct fbtft_display display = { | |
244 | .regwidth = 8, | |
245 | .width = WIDTH, | |
246 | .height = HEIGHT, | |
247 | .bpp = BPP, | |
248 | .fps = FPS, | |
249 | #ifdef GAMMA_ADJ | |
250 | .gamma_num = GAMMA_NUM, | |
251 | .gamma_len = GAMMA_LEN, | |
252 | .gamma = DEFAULT_GAMMA, | |
253 | #endif | |
254 | .fbtftops = { | |
255 | .init_display = init_display, | |
256 | .set_addr_win = set_addr_win, | |
257 | .set_var = set_var, | |
258 | #ifdef GAMMA_ADJ | |
259 | .set_gamma = gamma_adj, | |
260 | #endif | |
261 | }, | |
262 | }; | |
263 | ||
264 | FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9163", &display); | |
265 | ||
266 | MODULE_ALIAS("spi:" DRVNAME); | |
267 | MODULE_ALIAS("platform:" DRVNAME); | |
268 | MODULE_ALIAS("spi:ili9163"); | |
269 | MODULE_ALIAS("platform:ili9163"); | |
270 | ||
271 | MODULE_DESCRIPTION("FB driver for the ILI9163 LCD Controller"); | |
272 | MODULE_AUTHOR("Kozhevnikov Anatoly"); | |
273 | MODULE_LICENSE("GPL"); |