Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Generic FB driver for TFT LCD displays |
| 3 | * |
| 4 | * Copyright (C) 2013 Noralf Tronnes |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/vmalloc.h> |
| 25 | #include <linux/gpio.h> |
| 26 | #include <linux/spi/spi.h> |
| 27 | #include <linux/delay.h> |
| 28 | |
| 29 | #include "fbtft.h" |
| 30 | |
| 31 | #define DRVNAME "flexfb" |
| 32 | |
| 33 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 34 | static char *chip; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 35 | module_param(chip, charp, 0); |
| 36 | MODULE_PARM_DESC(chip, "LCD controller"); |
| 37 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 38 | static unsigned int width; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 39 | module_param(width, uint, 0); |
| 40 | MODULE_PARM_DESC(width, "Display width"); |
| 41 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 42 | static unsigned int height; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 43 | module_param(height, uint, 0); |
| 44 | MODULE_PARM_DESC(height, "Display height"); |
| 45 | |
| 46 | static int init[512]; |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 47 | static int init_num; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 48 | module_param_array(init, int, &init_num, 0); |
| 49 | MODULE_PARM_DESC(init, "Init sequence"); |
| 50 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 51 | static unsigned int setaddrwin; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 52 | module_param(setaddrwin, uint, 0); |
| 53 | MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use"); |
| 54 | |
| 55 | static unsigned int buswidth = 8; |
| 56 | module_param(buswidth, uint, 0); |
| 57 | MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)"); |
| 58 | |
| 59 | static unsigned int regwidth = 8; |
| 60 | module_param(regwidth, uint, 0); |
| 61 | MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)"); |
| 62 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 63 | static bool nobacklight; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 64 | module_param(nobacklight, bool, 0); |
| 65 | MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality."); |
| 66 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 67 | static bool latched; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 68 | module_param(latched, bool, 0); |
| 69 | MODULE_PARM_DESC(latched, "Use with latched 16-bit databus"); |
| 70 | |
| 71 | |
Mauro Stettler | 462125b | 2015-01-25 20:26:17 +0900 | [diff] [blame] | 72 | static int *initp; |
| 73 | static int initp_num; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 74 | |
| 75 | /* default init sequences */ |
| 76 | static int st7735r_init[] = { \ |
| 77 | -1,0x01,-2,150,-1,0x11,-2,500,-1,0xB1,0x01,0x2C,0x2D,-1,0xB2,0x01,0x2C,0x2D,-1,0xB3,0x01,0x2C,0x2D,0x01,0x2C,0x2D, \ |
| 78 | -1,0xB4,0x07,-1,0xC0,0xA2,0x02,0x84,-1,0xC1,0xC5,-1,0xC2,0x0A,0x00,-1,0xC3,0x8A,0x2A,-1,0xC4,0x8A,0xEE,-1,0xC5,0x0E, \ |
| 79 | -1,0x20,-1,0x36,0xC0,-1,0x3A,0x05,-1,0xE0,0x0f,0x1a,0x0f,0x18,0x2f,0x28,0x20,0x22,0x1f,0x1b,0x23,0x37,0x00,0x07,0x02,0x10, \ |
| 80 | -1,0xE1,0x0f,0x1b,0x0f,0x17,0x33,0x2c,0x29,0x2e,0x30,0x30,0x39,0x3f,0x00,0x07,0x03,0x10,-1,0x29,-2,100,-1,0x13,-2,10,-3 }; |
| 81 | |
| 82 | static int ssd1289_init[] = { \ |
| 83 | -1,0x00,0x0001,-1,0x03,0xA8A4,-1,0x0C,0x0000,-1,0x0D,0x080C,-1,0x0E,0x2B00,-1,0x1E,0x00B7,-1,0x01,0x2B3F,-1,0x02,0x0600, \ |
| 84 | -1,0x10,0x0000,-1,0x11,0x6070,-1,0x05,0x0000,-1,0x06,0x0000,-1,0x16,0xEF1C,-1,0x17,0x0003,-1,0x07,0x0233,-1,0x0B,0x0000, \ |
| 85 | -1,0x0F,0x0000,-1,0x41,0x0000,-1,0x42,0x0000,-1,0x48,0x0000,-1,0x49,0x013F,-1,0x4A,0x0000,-1,0x4B,0x0000,-1,0x44,0xEF00, \ |
| 86 | -1,0x45,0x0000,-1,0x46,0x013F,-1,0x30,0x0707,-1,0x31,0x0204,-1,0x32,0x0204,-1,0x33,0x0502,-1,0x34,0x0507,-1,0x35,0x0204, \ |
| 87 | -1,0x36,0x0204,-1,0x37,0x0502,-1,0x3A,0x0302,-1,0x3B,0x0302,-1,0x23,0x0000,-1,0x24,0x0000,-1,0x25,0x8000,-1,0x4f,0x0000, \ |
| 88 | -1,0x4e,0x0000,-1,0x22,-3 }; |
| 89 | |
| 90 | static int hx8340bn_init[] = { \ |
| 91 | -1,0xC1,0xFF,0x83,0x40,-1,0x11,-2,150,-1,0xCA,0x70,0x00,0xD9,-1,0xB0,0x01,0x11, \ |
| 92 | -1,0xC9,0x90,0x49,0x10,0x28,0x28,0x10,0x00,0x06,-2,20,-1,0xC2,0x60,0x71,0x01,0x0E,0x05,0x02,0x09,0x31,0x0A, \ |
| 93 | -1,0xC3,0x67,0x30,0x61,0x17,0x48,0x07,0x05,0x33,-2,10,-1,0xB5,0x35,0x20,0x45,-1,0xB4,0x33,0x25,0x4C,-2,10, \ |
| 94 | -1,0x3A,0x05,-1,0x29,-2,10,-3 }; |
| 95 | |
| 96 | static int ili9225_init[] = { \ |
| 97 | -1,0x0001,0x011C,-1,0x0002,0x0100,-1,0x0003,0x1030,-1,0x0008,0x0808,-1,0x000C,0x0000,-1,0x000F,0x0A01,-1,0x0020,0x0000, \ |
| 98 | -1,0x0021,0x0000,-2,50,-1,0x0010,0x0A00,-1,0x0011,0x1038,-2,50,-1,0x0012,0x1121,-1,0x0013,0x004E,-1,0x0014,0x676F, \ |
| 99 | -1,0x0030,0x0000,-1,0x0031,0x00DB,-1,0x0032,0x0000,-1,0x0033,0x0000,-1,0x0034,0x00DB,-1,0x0035,0x0000,-1,0x0036,0x00AF, \ |
| 100 | -1,0x0037,0x0000,-1,0x0038,0x00DB,-1,0x0039,0x0000,-1,0x0050,0x0000,-1,0x0051,0x060A,-1,0x0052,0x0D0A,-1,0x0053,0x0303, \ |
| 101 | -1,0x0054,0x0A0D,-1,0x0055,0x0A06,-1,0x0056,0x0000,-1,0x0057,0x0303,-1,0x0058,0x0000,-1,0x0059,0x0000,-2,50, \ |
| 102 | -1,0x0007,0x1017,-2,50,-3 }; |
| 103 | |
| 104 | static int ili9320_init[] = { \ |
| 105 | -1,0x00E5,0x8000,-1,0x0000,0x0001,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000,-1,0x0008,0x0202, \ |
| 106 | -1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000,-1,0x0011,0x0007, \ |
| 107 | -1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x17B0,-1,0x0011,0x0031,-2,50,-1,0x0012,0x0138,-2,50,-1,0x0013,0x1800, \ |
| 108 | -1,0x0029,0x0008,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000,-1,0x0031,0x0505,-1,0x0032,0x0004, \ |
| 109 | -1,0x0035,0x0006,-1,0x0036,0x0707,-1,0x0037,0x0105,-1,0x0038,0x0002,-1,0x0039,0x0707,-1,0x003C,0x0704,-1,0x003D,0x0807, \ |
| 110 | -1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0x2700,-1,0x0061,0x0001,-1,0x006A,0x0000, \ |
| 111 | -1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000,-1,0x0085,0x0000,-1,0x0090,0x0010, \ |
| 112 | -1,0x0092,0x0000,-1,0x0093,0x0003,-1,0x0095,0x0110,-1,0x0097,0x0000,-1,0x0098,0x0000,-1,0x0007,0x0173,-3 }; |
| 113 | |
| 114 | static int ili9325_init[] = { \ |
| 115 | -1,0x00E3,0x3008,-1,0x00E7,0x0012,-1,0x00EF,0x1231,-1,0x0001,0x0100,-1,0x0002,0x0700,-1,0x0003,0x1030,-1,0x0004,0x0000, \ |
| 116 | -1,0x0008,0x0207,-1,0x0009,0x0000,-1,0x000A,0x0000,-1,0x000C,0x0000,-1,0x000D,0x0000,-1,0x000F,0x0000,-1,0x0010,0x0000, \ |
| 117 | -1,0x0011,0x0007,-1,0x0012,0x0000,-1,0x0013,0x0000,-2,200,-1,0x0010,0x1690,-1,0x0011,0x0223,-2,50,-1,0x0012,0x000D,-2,50, \ |
| 118 | -1,0x0013,0x1200,-1,0x0029,0x000A,-1,0x002B,0x000C,-2,50,-1,0x0020,0x0000,-1,0x0021,0x0000,-1,0x0030,0x0000, \ |
| 119 | -1,0x0031,0x0506,-1,0x0032,0x0104,-1,0x0035,0x0207,-1,0x0036,0x000F,-1,0x0037,0x0306,-1,0x0038,0x0102,-1,0x0039,0x0707, \ |
| 120 | -1,0x003C,0x0702,-1,0x003D,0x1604,-1,0x0050,0x0000,-1,0x0051,0x00EF,-1,0x0052,0x0000,-1,0x0053,0x013F,-1,0x0060,0xA700, \ |
| 121 | -1,0x0061,0x0001,-1,0x006A,0x0000,-1,0x0080,0x0000,-1,0x0081,0x0000,-1,0x0082,0x0000,-1,0x0083,0x0000,-1,0x0084,0x0000, \ |
| 122 | -1,0x0085,0x0000,-1,0x0090,0x0010,-1,0x0092,0x0600,-1,0x0007,0x0133,-3 }; |
| 123 | |
| 124 | static int ili9341_init[] = { \ |
| 125 | -1,0x28,-2,20,-1,0xCF,0x00,0x83,0x30,-1,0xED,0x64,0x03,0x12,0x81,-1,0xE8,0x85,0x01,0x79, \ |
| 126 | -1,0xCB,0x39,0x2c,0x00,0x34,0x02,-1,0xF7,0x20,-1,0xEA,0x00,0x00,-1,0xC0,0x26,-1,0xC1,0x11, \ |
| 127 | -1,0xC5,0x35,0x3E,-1,0xC7,0xBE,-1,0xB1,0x00,0x1B,-1,0xB6,0x0a,0x82,0x27,0x00,-1,0xB7,0x07, \ |
| 128 | -1,0x3A,0x55,-1,0x36,0x48,-1,0x11,-2,120,-1,0x29,-2,20,-3 }; |
| 129 | |
| 130 | static int ssd1351_init[] = { -1,0xfd,0x12,-1,0xfd,0xb1,-1,0xae,-1,0xb3,0xf1,-1,0xca,0x7f,-1,0xa0,0x74, \ |
| 131 | -1,0x15,0x00,0x7f,-1,0x75,0x00,0x7f,-1,0xa1,0x00,-1,0xa2,0x00,-1,0xb5,0x00, \ |
| 132 | -1,0xab,0x01,-1,0xb1,0x32,-1,0xb4,0xa0,0xb5,0x55,-1,0xbb,0x17,-1,0xbe,0x05, \ |
| 133 | -1,0xc1,0xc8,0x80,0xc8,-1,0xc7,0x0f,-1,0xb6,0x01,-1,0xa6,-1,0xaf,-3 }; |
| 134 | |
| 135 | |
| 136 | /* ili9320, ili9325 */ |
| 137 | static void flexfb_set_addr_win_1(struct fbtft_par *par, int xs, int ys, int xe, int ye) |
| 138 | { |
| 139 | fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); |
| 140 | switch (par->info->var.rotate) { |
| 141 | /* R20h = Horizontal GRAM Start Address */ |
| 142 | /* R21h = Vertical GRAM Start Address */ |
| 143 | case 0: |
| 144 | write_reg(par, 0x0020, xs); |
| 145 | write_reg(par, 0x0021, ys); |
| 146 | break; |
| 147 | case 180: |
| 148 | write_reg(par, 0x0020, width - 1 - xs); |
| 149 | write_reg(par, 0x0021, height - 1 - ys); |
| 150 | break; |
| 151 | case 270: |
| 152 | write_reg(par, 0x0020, width - 1 - ys); |
| 153 | write_reg(par, 0x0021, xs); |
| 154 | break; |
| 155 | case 90: |
| 156 | write_reg(par, 0x0020, ys); |
| 157 | write_reg(par, 0x0021, height - 1 - xs); |
| 158 | break; |
| 159 | } |
| 160 | write_reg(par, 0x0022); /* Write Data to GRAM */ |
| 161 | } |
| 162 | |
| 163 | /* ssd1289 */ |
| 164 | static void flexfb_set_addr_win_2(struct fbtft_par *par, int xs, int ys, int xe, int ye) |
| 165 | { |
| 166 | fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); |
| 167 | |
| 168 | switch (par->info->var.rotate) { |
| 169 | /* R4Eh - Set GDDRAM X address counter */ |
| 170 | /* R4Fh - Set GDDRAM Y address counter */ |
| 171 | case 0: |
| 172 | write_reg(par, 0x4e, xs); |
| 173 | write_reg(par, 0x4f, ys); |
| 174 | break; |
| 175 | case 180: |
| 176 | write_reg(par, 0x4e, par->info->var.xres - 1 - xs); |
| 177 | write_reg(par, 0x4f, par->info->var.yres - 1 - ys); |
| 178 | break; |
| 179 | case 270: |
| 180 | write_reg(par, 0x4e, par->info->var.yres - 1 - ys); |
| 181 | write_reg(par, 0x4f, xs); |
| 182 | break; |
| 183 | case 90: |
| 184 | write_reg(par, 0x4e, ys); |
| 185 | write_reg(par, 0x4f, par->info->var.xres - 1 - xs); |
| 186 | break; |
| 187 | } |
| 188 | |
| 189 | /* R22h - RAM data write */ |
| 190 | write_reg(par, 0x22, 0); |
| 191 | } |
| 192 | |
| 193 | /* ssd1351 */ |
| 194 | static void set_addr_win_3(struct fbtft_par *par, int xs, int ys, int xe, int ye) |
| 195 | { |
| 196 | fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par, "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe, ye); |
| 197 | |
| 198 | write_reg(par, 0x15, xs, xe); |
| 199 | write_reg(par, 0x75, ys, ye); |
| 200 | write_reg(par, 0x5C); |
| 201 | } |
| 202 | |
| 203 | static int flexfb_verify_gpios_dc(struct fbtft_par *par) |
| 204 | { |
| 205 | fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__); |
| 206 | |
| 207 | if (par->gpio.dc < 0) { |
| 208 | dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n"); |
| 209 | return -EINVAL; |
| 210 | } |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | static int flexfb_verify_gpios_db(struct fbtft_par *par) |
| 216 | { |
| 217 | int i; |
| 218 | int num_db = buswidth; |
| 219 | |
| 220 | fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__); |
| 221 | |
| 222 | if (par->gpio.dc < 0) { |
| 223 | dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n"); |
| 224 | return -EINVAL; |
| 225 | } |
| 226 | if (par->gpio.wr < 0) { |
| 227 | dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n"); |
| 228 | return -EINVAL; |
| 229 | } |
| 230 | if (latched && (par->gpio.latch < 0)) { |
| 231 | dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n"); |
| 232 | return -EINVAL; |
| 233 | } |
| 234 | if (latched) |
| 235 | num_db=buswidth/2; |
| 236 | for (i=0;i < num_db;i++) { |
| 237 | if (par->gpio.db[i] < 0) { |
| 238 | dev_err(par->info->device, "Missing info about 'db%02d' gpio. Aborting.\n", i); |
| 239 | return -EINVAL; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static struct fbtft_display flex_display = { }; |
| 247 | |
| 248 | static int flexfb_probe_common(struct spi_device *sdev, struct platform_device *pdev) |
| 249 | { |
| 250 | struct device *dev; |
| 251 | struct fb_info *info; |
| 252 | struct fbtft_par *par; |
| 253 | int ret; |
| 254 | |
| 255 | initp = init; |
| 256 | initp_num = init_num; |
| 257 | |
| 258 | if (sdev) |
| 259 | dev = &sdev->dev; |
| 260 | else |
| 261 | dev = &pdev->dev; |
| 262 | |
| 263 | fbtft_init_dbg(dev, "%s(%s)\n", __func__, sdev ? "'SPI device'" : "'Platform device'"); |
| 264 | |
| 265 | if (chip) { |
| 266 | |
| 267 | if (!strcmp(chip, "st7735r")) { |
| 268 | if (!width) |
| 269 | width = 128; |
| 270 | if (!height) |
| 271 | height = 160; |
| 272 | if (init_num == 0) { |
| 273 | initp = st7735r_init; |
| 274 | initp_num = ARRAY_SIZE(st7735r_init); |
| 275 | } |
| 276 | |
| 277 | |
| 278 | } else if (!strcmp(chip, "hx8340bn")) { |
| 279 | if (!width) |
| 280 | width = 176; |
| 281 | if (!height) |
| 282 | height = 220; |
| 283 | setaddrwin = 0; |
| 284 | if (init_num == 0) { |
| 285 | initp = hx8340bn_init; |
| 286 | initp_num = ARRAY_SIZE(hx8340bn_init); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | } else if (!strcmp(chip, "ili9225")) { |
| 291 | if (!width) |
| 292 | width = 176; |
| 293 | if (!height) |
| 294 | height = 220; |
| 295 | setaddrwin = 0; |
| 296 | regwidth = 16; |
| 297 | if (init_num == 0) { |
| 298 | initp = ili9225_init; |
| 299 | initp_num = ARRAY_SIZE(ili9225_init); |
| 300 | } |
| 301 | |
| 302 | |
| 303 | |
| 304 | } else if (!strcmp(chip, "ili9320")) { |
| 305 | if (!width) |
| 306 | width = 240; |
| 307 | if (!height) |
| 308 | height = 320; |
| 309 | setaddrwin = 1; |
| 310 | regwidth = 16; |
| 311 | if (init_num == 0) { |
| 312 | initp = ili9320_init; |
| 313 | initp_num = ARRAY_SIZE(ili9320_init); |
| 314 | } |
| 315 | |
| 316 | |
| 317 | } else if (!strcmp(chip, "ili9325")) { |
| 318 | if (!width) |
| 319 | width = 240; |
| 320 | if (!height) |
| 321 | height = 320; |
| 322 | setaddrwin = 1; |
| 323 | regwidth = 16; |
| 324 | if (init_num == 0) { |
| 325 | initp = ili9325_init; |
| 326 | initp_num = ARRAY_SIZE(ili9325_init); |
| 327 | } |
| 328 | |
| 329 | } else if (!strcmp(chip, "ili9341")) { |
| 330 | if (!width) |
| 331 | width = 240; |
| 332 | if (!height) |
| 333 | height = 320; |
| 334 | setaddrwin = 0; |
| 335 | regwidth = 8; |
| 336 | if (init_num == 0) { |
| 337 | initp = ili9341_init; |
| 338 | initp_num = ARRAY_SIZE(ili9341_init); |
| 339 | } |
| 340 | |
| 341 | |
| 342 | } else if (!strcmp(chip, "ssd1289")) { |
| 343 | if (!width) |
| 344 | width = 240; |
| 345 | if (!height) |
| 346 | height = 320; |
| 347 | setaddrwin = 2; |
| 348 | regwidth = 16; |
| 349 | if (init_num == 0) { |
| 350 | initp = ssd1289_init; |
| 351 | initp_num = ARRAY_SIZE(ssd1289_init); |
| 352 | } |
| 353 | |
| 354 | |
| 355 | |
| 356 | } else if (!strcmp(chip, "ssd1351")) { |
| 357 | if (!width) |
| 358 | width = 128; |
| 359 | if (!height) |
| 360 | height = 128; |
| 361 | setaddrwin = 3; |
| 362 | if (init_num == 0) { |
| 363 | initp = ssd1351_init; |
| 364 | initp_num = ARRAY_SIZE(ssd1351_init); |
| 365 | } |
| 366 | } else { |
| 367 | dev_err(dev, "chip=%s is not supported\n", chip); |
| 368 | return -EINVAL; |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | if (width == 0 || height == 0) { |
| 373 | dev_err(dev, "argument(s) missing: width and height has to be set.\n"); |
| 374 | return -EINVAL; |
| 375 | } |
| 376 | flex_display.width = width; |
| 377 | flex_display.height = height; |
| 378 | fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height); |
| 379 | fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set"); |
| 380 | fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin); |
| 381 | fbtft_init_dbg(dev, "regwidth = %d\n", regwidth); |
| 382 | fbtft_init_dbg(dev, "buswidth = %d\n", buswidth); |
| 383 | |
| 384 | info = fbtft_framebuffer_alloc(&flex_display, dev); |
| 385 | if (!info) |
| 386 | return -ENOMEM; |
| 387 | |
| 388 | par = info->par; |
| 389 | if (sdev) |
| 390 | par->spi = sdev; |
| 391 | else |
| 392 | par->pdev = pdev; |
| 393 | if (!par->init_sequence) |
| 394 | par->init_sequence = initp; |
| 395 | par->fbtftops.init_display = fbtft_init_display; |
| 396 | |
| 397 | /* registerwrite functions */ |
| 398 | switch (regwidth) { |
| 399 | case 8: |
| 400 | par->fbtftops.write_register = fbtft_write_reg8_bus8; |
| 401 | break; |
| 402 | case 16: |
| 403 | par->fbtftops.write_register = fbtft_write_reg16_bus8; |
| 404 | break; |
| 405 | default: |
| 406 | dev_err(dev, "argument 'regwidth': %d is not supported.\n", regwidth); |
| 407 | return -EINVAL; |
| 408 | } |
| 409 | |
| 410 | /* bus functions */ |
| 411 | if (sdev) { |
| 412 | par->fbtftops.write = fbtft_write_spi; |
| 413 | switch (buswidth) { |
| 414 | case 8: |
| 415 | par->fbtftops.write_vmem = fbtft_write_vmem16_bus8; |
| 416 | if (!par->startbyte) |
| 417 | par->fbtftops.verify_gpios = flexfb_verify_gpios_dc; |
| 418 | break; |
| 419 | case 9: |
| 420 | if (regwidth == 16) { |
| 421 | dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n", regwidth, buswidth); |
| 422 | return -EINVAL; |
| 423 | } |
| 424 | par->fbtftops.write_register = fbtft_write_reg8_bus9; |
| 425 | par->fbtftops.write_vmem = fbtft_write_vmem16_bus9; |
Helen Fornazier | 1f5f636 | 2015-03-25 20:54:33 -0300 | [diff] [blame] | 426 | sdev->bits_per_word = 9; |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 427 | ret = sdev->master->setup(sdev); |
| 428 | if (ret) { |
| 429 | dev_warn(dev, |
| 430 | "9-bit SPI not available, emulating using 8-bit.\n"); |
| 431 | sdev->bits_per_word = 8; |
| 432 | ret = sdev->master->setup(sdev); |
| 433 | if (ret) |
| 434 | goto out_release; |
| 435 | /* allocate buffer with room for dc bits */ |
| 436 | par->extra = devm_kzalloc(par->info->device, |
| 437 | par->txbuf.len + (par->txbuf.len / 8) + 8, |
| 438 | GFP_KERNEL); |
| 439 | if (!par->extra) { |
| 440 | ret = -ENOMEM; |
| 441 | goto out_release; |
| 442 | } |
| 443 | par->fbtftops.write = fbtft_write_spi_emulate_9; |
| 444 | } |
| 445 | break; |
| 446 | default: |
| 447 | dev_err(dev, "argument 'buswidth': %d is not supported with SPI.\n", buswidth); |
| 448 | return -EINVAL; |
| 449 | } |
| 450 | } else { |
| 451 | par->fbtftops.verify_gpios = flexfb_verify_gpios_db; |
| 452 | switch (buswidth) { |
| 453 | case 8: |
| 454 | par->fbtftops.write = fbtft_write_gpio8_wr; |
| 455 | par->fbtftops.write_vmem = fbtft_write_vmem16_bus8; |
| 456 | break; |
| 457 | case 16: |
| 458 | par->fbtftops.write_register = fbtft_write_reg16_bus16; |
| 459 | if (latched) |
| 460 | par->fbtftops.write = fbtft_write_gpio16_wr_latched; |
| 461 | else |
| 462 | par->fbtftops.write = fbtft_write_gpio16_wr; |
| 463 | par->fbtftops.write_vmem = fbtft_write_vmem16_bus16; |
| 464 | break; |
| 465 | default: |
| 466 | dev_err(dev, "argument 'buswidth': %d is not supported with parallel.\n", buswidth); |
| 467 | return -EINVAL; |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | /* set_addr_win function */ |
| 472 | switch (setaddrwin) { |
| 473 | case 0: |
| 474 | /* use default */ |
| 475 | break; |
| 476 | case 1: |
| 477 | par->fbtftops.set_addr_win = flexfb_set_addr_win_1; |
| 478 | break; |
| 479 | case 2: |
| 480 | par->fbtftops.set_addr_win = flexfb_set_addr_win_2; |
| 481 | break; |
| 482 | case 3: |
| 483 | par->fbtftops.set_addr_win = set_addr_win_3; |
| 484 | break; |
| 485 | default: |
| 486 | dev_err(dev, "argument 'setaddrwin': unknown value %d.\n", setaddrwin); |
| 487 | return -EINVAL; |
| 488 | } |
| 489 | |
| 490 | if (!nobacklight) |
| 491 | par->fbtftops.register_backlight = fbtft_register_backlight; |
| 492 | |
| 493 | ret = fbtft_register_framebuffer(info); |
| 494 | if (ret < 0) |
| 495 | goto out_release; |
| 496 | |
| 497 | return 0; |
| 498 | |
| 499 | out_release: |
| 500 | fbtft_framebuffer_release(info); |
| 501 | |
| 502 | return ret; |
| 503 | } |
| 504 | |
| 505 | static int flexfb_remove_common(struct device *dev, struct fb_info *info) |
| 506 | { |
| 507 | struct fbtft_par *par; |
| 508 | |
| 509 | if (!info) |
| 510 | return -EINVAL; |
| 511 | par = info->par; |
| 512 | if (par) |
| 513 | fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par, |
| 514 | "%s()\n", __func__); |
| 515 | fbtft_unregister_framebuffer(info); |
| 516 | fbtft_framebuffer_release(info); |
| 517 | |
| 518 | return 0; |
| 519 | } |
| 520 | |
| 521 | static int flexfb_probe_spi(struct spi_device *spi) |
| 522 | { |
| 523 | return flexfb_probe_common(spi, NULL); |
| 524 | } |
| 525 | |
| 526 | static int flexfb_remove_spi(struct spi_device *spi) |
| 527 | { |
| 528 | struct fb_info *info = spi_get_drvdata(spi); |
| 529 | |
| 530 | return flexfb_remove_common(&spi->dev, info); |
| 531 | } |
| 532 | |
| 533 | static int flexfb_probe_pdev(struct platform_device *pdev) |
| 534 | { |
| 535 | return flexfb_probe_common(NULL, pdev); |
| 536 | } |
| 537 | |
| 538 | static int flexfb_remove_pdev(struct platform_device *pdev) |
| 539 | { |
| 540 | struct fb_info *info = platform_get_drvdata(pdev); |
| 541 | |
| 542 | return flexfb_remove_common(&pdev->dev, info); |
| 543 | } |
| 544 | |
| 545 | static struct spi_driver flexfb_spi_driver = { |
| 546 | .driver = { |
| 547 | .name = DRVNAME, |
| 548 | .owner = THIS_MODULE, |
| 549 | }, |
| 550 | .probe = flexfb_probe_spi, |
| 551 | .remove = flexfb_remove_spi, |
| 552 | }; |
| 553 | |
| 554 | static const struct platform_device_id flexfb_platform_ids[] = { |
| 555 | { "flexpfb", 0 }, |
| 556 | { }, |
| 557 | }; |
| 558 | |
| 559 | static struct platform_driver flexfb_platform_driver = { |
| 560 | .driver = { |
| 561 | .name = DRVNAME, |
Thomas Petazzoni | 27837e1 | 2014-12-31 10:11:35 +0100 | [diff] [blame] | 562 | }, |
| 563 | .id_table = flexfb_platform_ids, |
| 564 | .probe = flexfb_probe_pdev, |
| 565 | .remove = flexfb_remove_pdev, |
| 566 | }; |
| 567 | |
| 568 | static int __init flexfb_init(void) |
| 569 | { |
| 570 | int ret, ret2; |
| 571 | |
| 572 | ret = spi_register_driver(&flexfb_spi_driver); |
| 573 | ret2 = platform_driver_register(&flexfb_platform_driver); |
| 574 | if (ret < 0) |
| 575 | return ret; |
| 576 | return ret2; |
| 577 | } |
| 578 | |
| 579 | static void __exit flexfb_exit(void) |
| 580 | { |
| 581 | spi_unregister_driver(&flexfb_spi_driver); |
| 582 | platform_driver_unregister(&flexfb_platform_driver); |
| 583 | } |
| 584 | |
| 585 | /* ------------------------------------------------------------------------- */ |
| 586 | |
| 587 | module_init(flexfb_init); |
| 588 | module_exit(flexfb_exit); |
| 589 | |
| 590 | MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays"); |
| 591 | MODULE_AUTHOR("Noralf Tronnes"); |
| 592 | MODULE_LICENSE("GPL"); |