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17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/init.h>
20#include <linux/vmalloc.h>
21#include <linux/gpio.h>
22#include <linux/spi/spi.h>
23#include <linux/delay.h>
24
25#include "fbtft.h"
26
27#define DRVNAME "flexfb"
28
29static char *chip;
30module_param(chip, charp, 0);
31MODULE_PARM_DESC(chip, "LCD controller");
32
33static unsigned int width;
34module_param(width, uint, 0);
35MODULE_PARM_DESC(width, "Display width");
36
37static unsigned int height;
38module_param(height, uint, 0);
39MODULE_PARM_DESC(height, "Display height");
40
41static int init[512];
42static int init_num;
43module_param_array(init, int, &init_num, 0);
44MODULE_PARM_DESC(init, "Init sequence");
45
46static unsigned int setaddrwin;
47module_param(setaddrwin, uint, 0);
48MODULE_PARM_DESC(setaddrwin, "Which set_addr_win() implementation to use");
49
50static unsigned int buswidth = 8;
51module_param(buswidth, uint, 0);
52MODULE_PARM_DESC(buswidth, "Width of databus (default: 8)");
53
54static unsigned int regwidth = 8;
55module_param(regwidth, uint, 0);
56MODULE_PARM_DESC(regwidth, "Width of controller register (default: 8)");
57
58static bool nobacklight;
59module_param(nobacklight, bool, 0);
60MODULE_PARM_DESC(nobacklight, "Turn off backlight functionality.");
61
62static bool latched;
63module_param(latched, bool, 0);
64MODULE_PARM_DESC(latched, "Use with latched 16-bit databus");
65
66static int *initp;
67static int initp_num;
68
69
70static int st7735r_init[] = {
71-1, 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,
72-1, 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,
73-1, 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,
74-1, 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 };
75
76static int ssd1289_init[] = {
77-1, 0x00, 0x0001, -1, 0x03, 0xA8A4, -1, 0x0C, 0x0000, -1, 0x0D, 0x080C, -1, 0x0E, 0x2B00, -1, 0x1E, 0x00B7, -1, 0x01, 0x2B3F, -1, 0x02, 0x0600,
78-1, 0x10, 0x0000, -1, 0x11, 0x6070, -1, 0x05, 0x0000, -1, 0x06, 0x0000, -1, 0x16, 0xEF1C, -1, 0x17, 0x0003, -1, 0x07, 0x0233, -1, 0x0B, 0x0000,
79-1, 0x0F, 0x0000, -1, 0x41, 0x0000, -1, 0x42, 0x0000, -1, 0x48, 0x0000, -1, 0x49, 0x013F, -1, 0x4A, 0x0000, -1, 0x4B, 0x0000, -1, 0x44, 0xEF00,
80-1, 0x45, 0x0000, -1, 0x46, 0x013F, -1, 0x30, 0x0707, -1, 0x31, 0x0204, -1, 0x32, 0x0204, -1, 0x33, 0x0502, -1, 0x34, 0x0507, -1, 0x35, 0x0204,
81-1, 0x36, 0x0204, -1, 0x37, 0x0502, -1, 0x3A, 0x0302, -1, 0x3B, 0x0302, -1, 0x23, 0x0000, -1, 0x24, 0x0000, -1, 0x25, 0x8000, -1, 0x4f, 0x0000,
82-1, 0x4e, 0x0000, -1, 0x22, -3 };
83
84static int hx8340bn_init[] = {
85-1, 0xC1, 0xFF, 0x83, 0x40, -1, 0x11, -2, 150, -1, 0xCA, 0x70, 0x00, 0xD9, -1, 0xB0, 0x01, 0x11,
86-1, 0xC9, 0x90, 0x49, 0x10, 0x28, 0x28, 0x10, 0x00, 0x06, -2, 20, -1, 0xC2, 0x60, 0x71, 0x01, 0x0E, 0x05, 0x02, 0x09, 0x31, 0x0A,
87-1, 0xC3, 0x67, 0x30, 0x61, 0x17, 0x48, 0x07, 0x05, 0x33, -2, 10, -1, 0xB5, 0x35, 0x20, 0x45, -1, 0xB4, 0x33, 0x25, 0x4C, -2, 10,
88-1, 0x3A, 0x05, -1, 0x29, -2, 10, -3 };
89
90static int ili9225_init[] = {
91-1, 0x0001, 0x011C, -1, 0x0002, 0x0100, -1, 0x0003, 0x1030, -1, 0x0008, 0x0808, -1, 0x000C, 0x0000, -1, 0x000F, 0x0A01, -1, 0x0020, 0x0000,
92-1, 0x0021, 0x0000, -2, 50, -1, 0x0010, 0x0A00, -1, 0x0011, 0x1038, -2, 50, -1, 0x0012, 0x1121, -1, 0x0013, 0x004E, -1, 0x0014, 0x676F,
93-1, 0x0030, 0x0000, -1, 0x0031, 0x00DB, -1, 0x0032, 0x0000, -1, 0x0033, 0x0000, -1, 0x0034, 0x00DB, -1, 0x0035, 0x0000, -1, 0x0036, 0x00AF,
94-1, 0x0037, 0x0000, -1, 0x0038, 0x00DB, -1, 0x0039, 0x0000, -1, 0x0050, 0x0000, -1, 0x0051, 0x060A, -1, 0x0052, 0x0D0A, -1, 0x0053, 0x0303,
95-1, 0x0054, 0x0A0D, -1, 0x0055, 0x0A06, -1, 0x0056, 0x0000, -1, 0x0057, 0x0303, -1, 0x0058, 0x0000, -1, 0x0059, 0x0000, -2, 50,
96-1, 0x0007, 0x1017, -2, 50, -3 };
97
98static int ili9320_init[] = {
99-1, 0x00E5, 0x8000, -1, 0x0000, 0x0001, -1, 0x0001, 0x0100, -1, 0x0002, 0x0700, -1, 0x0003, 0x1030, -1, 0x0004, 0x0000, -1, 0x0008, 0x0202,
100-1, 0x0009, 0x0000, -1, 0x000A, 0x0000, -1, 0x000C, 0x0000, -1, 0x000D, 0x0000, -1, 0x000F, 0x0000, -1, 0x0010, 0x0000, -1, 0x0011, 0x0007,
101-1, 0x0012, 0x0000, -1, 0x0013, 0x0000, -2, 200, -1, 0x0010, 0x17B0, -1, 0x0011, 0x0031, -2, 50, -1, 0x0012, 0x0138, -2, 50, -1, 0x0013, 0x1800,
102-1, 0x0029, 0x0008, -2, 50, -1, 0x0020, 0x0000, -1, 0x0021, 0x0000, -1, 0x0030, 0x0000, -1, 0x0031, 0x0505, -1, 0x0032, 0x0004,
103-1, 0x0035, 0x0006, -1, 0x0036, 0x0707, -1, 0x0037, 0x0105, -1, 0x0038, 0x0002, -1, 0x0039, 0x0707, -1, 0x003C, 0x0704, -1, 0x003D, 0x0807,
104-1, 0x0050, 0x0000, -1, 0x0051, 0x00EF, -1, 0x0052, 0x0000, -1, 0x0053, 0x013F, -1, 0x0060, 0x2700, -1, 0x0061, 0x0001, -1, 0x006A, 0x0000,
105-1, 0x0080, 0x0000, -1, 0x0081, 0x0000, -1, 0x0082, 0x0000, -1, 0x0083, 0x0000, -1, 0x0084, 0x0000, -1, 0x0085, 0x0000, -1, 0x0090, 0x0010,
106-1, 0x0092, 0x0000, -1, 0x0093, 0x0003, -1, 0x0095, 0x0110, -1, 0x0097, 0x0000, -1, 0x0098, 0x0000, -1, 0x0007, 0x0173, -3 };
107
108static int ili9325_init[] = {
109-1, 0x00E3, 0x3008, -1, 0x00E7, 0x0012, -1, 0x00EF, 0x1231, -1, 0x0001, 0x0100, -1, 0x0002, 0x0700, -1, 0x0003, 0x1030, -1, 0x0004, 0x0000,
110-1, 0x0008, 0x0207, -1, 0x0009, 0x0000, -1, 0x000A, 0x0000, -1, 0x000C, 0x0000, -1, 0x000D, 0x0000, -1, 0x000F, 0x0000, -1, 0x0010, 0x0000,
111-1, 0x0011, 0x0007, -1, 0x0012, 0x0000, -1, 0x0013, 0x0000, -2, 200, -1, 0x0010, 0x1690, -1, 0x0011, 0x0223, -2, 50, -1, 0x0012, 0x000D, -2, 50,
112-1, 0x0013, 0x1200, -1, 0x0029, 0x000A, -1, 0x002B, 0x000C, -2, 50, -1, 0x0020, 0x0000, -1, 0x0021, 0x0000, -1, 0x0030, 0x0000,
113-1, 0x0031, 0x0506, -1, 0x0032, 0x0104, -1, 0x0035, 0x0207, -1, 0x0036, 0x000F, -1, 0x0037, 0x0306, -1, 0x0038, 0x0102, -1, 0x0039, 0x0707,
114-1, 0x003C, 0x0702, -1, 0x003D, 0x1604, -1, 0x0050, 0x0000, -1, 0x0051, 0x00EF, -1, 0x0052, 0x0000, -1, 0x0053, 0x013F, -1, 0x0060, 0xA700,
115-1, 0x0061, 0x0001, -1, 0x006A, 0x0000, -1, 0x0080, 0x0000, -1, 0x0081, 0x0000, -1, 0x0082, 0x0000, -1, 0x0083, 0x0000, -1, 0x0084, 0x0000,
116-1, 0x0085, 0x0000, -1, 0x0090, 0x0010, -1, 0x0092, 0x0600, -1, 0x0007, 0x0133, -3 };
117
118static int ili9341_init[] = {
119-1, 0x28, -2, 20, -1, 0xCF, 0x00, 0x83, 0x30, -1, 0xED, 0x64, 0x03, 0x12, 0x81, -1, 0xE8, 0x85, 0x01, 0x79,
120-1, 0xCB, 0x39, 0x2c, 0x00, 0x34, 0x02, -1, 0xF7, 0x20, -1, 0xEA, 0x00, 0x00, -1, 0xC0, 0x26, -1, 0xC1, 0x11,
121-1, 0xC5, 0x35, 0x3E, -1, 0xC7, 0xBE, -1, 0xB1, 0x00, 0x1B, -1, 0xB6, 0x0a, 0x82, 0x27, 0x00, -1, 0xB7, 0x07,
122-1, 0x3A, 0x55, -1, 0x36, 0x48, -1, 0x11, -2, 120, -1, 0x29, -2, 20, -3 };
123
124static int ssd1351_init[] = { -1, 0xfd, 0x12, -1, 0xfd, 0xb1, -1, 0xae, -1, 0xb3, 0xf1, -1, 0xca, 0x7f, -1, 0xa0, 0x74,
125 -1, 0x15, 0x00, 0x7f, -1, 0x75, 0x00, 0x7f, -1, 0xa1, 0x00, -1, 0xa2, 0x00, -1, 0xb5, 0x00,
126 -1, 0xab, 0x01, -1, 0xb1, 0x32, -1, 0xb4, 0xa0, 0xb5, 0x55, -1, 0xbb, 0x17, -1, 0xbe, 0x05,
127 -1, 0xc1, 0xc8, 0x80, 0xc8, -1, 0xc7, 0x0f, -1, 0xb6, 0x01, -1, 0xa6, -1, 0xaf, -3 };
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137
138
139struct flexfb_lcd_controller {
140 const char *name;
141 unsigned int width;
142 unsigned int height;
143 unsigned int setaddrwin;
144 unsigned int regwidth;
145 int *init_seq;
146 int init_seq_sz;
147};
148
149static const struct flexfb_lcd_controller flexfb_chip_table[] = {
150 {
151 .name = "st7735r",
152 .width = 120,
153 .height = 160,
154 .init_seq = st7735r_init,
155 .init_seq_sz = ARRAY_SIZE(st7735r_init),
156 },
157 {
158 .name = "hx8340bn",
159 .width = 176,
160 .height = 220,
161 .init_seq = hx8340bn_init,
162 .init_seq_sz = ARRAY_SIZE(hx8340bn_init),
163 },
164 {
165 .name = "ili9225",
166 .width = 176,
167 .height = 220,
168 .regwidth = 16,
169 .init_seq = ili9225_init,
170 .init_seq_sz = ARRAY_SIZE(ili9225_init),
171 },
172 {
173 .name = "ili9225",
174 .width = 176,
175 .height = 220,
176 .regwidth = 16,
177 .init_seq = ili9225_init,
178 .init_seq_sz = ARRAY_SIZE(ili9225_init),
179 },
180 {
181 .name = "ili9225",
182 .width = 176,
183 .height = 220,
184 .regwidth = 16,
185 .init_seq = ili9225_init,
186 .init_seq_sz = ARRAY_SIZE(ili9225_init),
187 },
188 {
189 .name = "ili9320",
190 .width = 240,
191 .height = 320,
192 .setaddrwin = 1,
193 .regwidth = 16,
194 .init_seq = ili9320_init,
195 .init_seq_sz = ARRAY_SIZE(ili9320_init),
196 },
197 {
198 .name = "ili9325",
199 .width = 240,
200 .height = 320,
201 .setaddrwin = 1,
202 .regwidth = 16,
203 .init_seq = ili9325_init,
204 .init_seq_sz = ARRAY_SIZE(ili9325_init),
205 },
206 {
207 .name = "ili9341",
208 .width = 240,
209 .height = 320,
210 .init_seq = ili9341_init,
211 .init_seq_sz = ARRAY_SIZE(ili9341_init),
212 },
213 {
214 .name = "ssd1289",
215 .width = 240,
216 .height = 320,
217 .setaddrwin = 2,
218 .regwidth = 16,
219 .init_seq = ssd1289_init,
220 .init_seq_sz = ARRAY_SIZE(ssd1289_init),
221 },
222 {
223 .name = "ssd1351",
224 .width = 128,
225 .height = 128,
226 .setaddrwin = 3,
227 .init_seq = ssd1351_init,
228 .init_seq_sz = ARRAY_SIZE(ssd1351_init),
229 },
230};
231
232
233static void flexfb_set_addr_win_1(struct fbtft_par *par,
234 int xs, int ys, int xe, int ye)
235{
236 switch (par->info->var.rotate) {
237
238
239 case 0:
240 write_reg(par, 0x0020, xs);
241 write_reg(par, 0x0021, ys);
242 break;
243 case 180:
244 write_reg(par, 0x0020, width - 1 - xs);
245 write_reg(par, 0x0021, height - 1 - ys);
246 break;
247 case 270:
248 write_reg(par, 0x0020, width - 1 - ys);
249 write_reg(par, 0x0021, xs);
250 break;
251 case 90:
252 write_reg(par, 0x0020, ys);
253 write_reg(par, 0x0021, height - 1 - xs);
254 break;
255 }
256 write_reg(par, 0x0022);
257}
258
259
260static void flexfb_set_addr_win_2(struct fbtft_par *par,
261 int xs, int ys, int xe, int ye)
262{
263 switch (par->info->var.rotate) {
264
265
266 case 0:
267 write_reg(par, 0x4e, xs);
268 write_reg(par, 0x4f, ys);
269 break;
270 case 180:
271 write_reg(par, 0x4e, par->info->var.xres - 1 - xs);
272 write_reg(par, 0x4f, par->info->var.yres - 1 - ys);
273 break;
274 case 270:
275 write_reg(par, 0x4e, par->info->var.yres - 1 - ys);
276 write_reg(par, 0x4f, xs);
277 break;
278 case 90:
279 write_reg(par, 0x4e, ys);
280 write_reg(par, 0x4f, par->info->var.xres - 1 - xs);
281 break;
282 }
283
284
285 write_reg(par, 0x22, 0);
286}
287
288
289static void set_addr_win_3(struct fbtft_par *par,
290 int xs, int ys, int xe, int ye)
291{
292 write_reg(par, 0x15, xs, xe);
293 write_reg(par, 0x75, ys, ye);
294 write_reg(par, 0x5C);
295}
296
297static int flexfb_verify_gpios_dc(struct fbtft_par *par)
298{
299 fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
300
301 if (par->gpio.dc < 0) {
302 dev_err(par->info->device,
303 "Missing info about 'dc' gpio. Aborting.\n");
304 return -EINVAL;
305 }
306
307 return 0;
308}
309
310static int flexfb_verify_gpios_db(struct fbtft_par *par)
311{
312 int i;
313 int num_db = buswidth;
314
315 fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
316
317 if (par->gpio.dc < 0) {
318 dev_err(par->info->device, "Missing info about 'dc' gpio. Aborting.\n");
319 return -EINVAL;
320 }
321 if (par->gpio.wr < 0) {
322 dev_err(par->info->device, "Missing info about 'wr' gpio. Aborting.\n");
323 return -EINVAL;
324 }
325 if (latched && (par->gpio.latch < 0)) {
326 dev_err(par->info->device, "Missing info about 'latch' gpio. Aborting.\n");
327 return -EINVAL;
328 }
329 if (latched)
330 num_db = buswidth / 2;
331 for (i = 0; i < num_db; i++) {
332 if (par->gpio.db[i] < 0) {
333 dev_err(par->info->device,
334 "Missing info about 'db%02d' gpio. Aborting.\n",
335 i);
336 return -EINVAL;
337 }
338 }
339
340 return 0;
341}
342
343static void flexfb_chip_load_param(const struct flexfb_lcd_controller *chip)
344{
345 if (!width)
346 width = chip->width;
347 if (!height)
348 height = chip->height;
349 setaddrwin = chip->setaddrwin;
350 if (chip->regwidth)
351 regwidth = chip->regwidth;
352 if (!init_num) {
353 initp = chip->init_seq;
354 initp_num = chip->init_seq_sz;
355 }
356}
357
358static struct fbtft_display flex_display = { };
359
360static int flexfb_chip_init(const struct device *dev)
361{
362 int i;
363
364 for (i = 0; i < ARRAY_SIZE(flexfb_chip_table); i++)
365 if (!strcmp(chip, flexfb_chip_table[i].name)) {
366 flexfb_chip_load_param(&flexfb_chip_table[i]);
367 return 0;
368 }
369
370 dev_err(dev, "chip=%s is not supported\n", chip);
371
372 return -EINVAL;
373}
374
375static int flexfb_probe_common(struct spi_device *sdev,
376 struct platform_device *pdev)
377{
378 struct device *dev;
379 struct fb_info *info;
380 struct fbtft_par *par;
381 int ret;
382
383 initp = init;
384 initp_num = init_num;
385
386 if (sdev)
387 dev = &sdev->dev;
388 else
389 dev = &pdev->dev;
390
391 fbtft_init_dbg(dev, "%s(%s)\n", __func__,
392 sdev ? "'SPI device'" : "'Platform device'");
393
394 if (chip) {
395 ret = flexfb_chip_init(dev);
396 if (ret)
397 return ret;
398 }
399
400 if (width == 0 || height == 0) {
401 dev_err(dev, "argument(s) missing: width and height has to be set.\n");
402 return -EINVAL;
403 }
404 flex_display.width = width;
405 flex_display.height = height;
406 fbtft_init_dbg(dev, "Display resolution: %dx%d\n", width, height);
407 fbtft_init_dbg(dev, "chip = %s\n", chip ? chip : "not set");
408 fbtft_init_dbg(dev, "setaddrwin = %d\n", setaddrwin);
409 fbtft_init_dbg(dev, "regwidth = %d\n", regwidth);
410 fbtft_init_dbg(dev, "buswidth = %d\n", buswidth);
411
412 info = fbtft_framebuffer_alloc(&flex_display, dev, dev->platform_data);
413 if (!info)
414 return -ENOMEM;
415
416 par = info->par;
417 if (sdev)
418 par->spi = sdev;
419 else
420 par->pdev = pdev;
421 if (!par->init_sequence)
422 par->init_sequence = initp;
423 par->fbtftops.init_display = fbtft_init_display;
424
425
426 switch (regwidth) {
427 case 8:
428 par->fbtftops.write_register = fbtft_write_reg8_bus8;
429 break;
430 case 16:
431 par->fbtftops.write_register = fbtft_write_reg16_bus8;
432 break;
433 default:
434 dev_err(dev,
435 "argument 'regwidth': %d is not supported.\n",
436 regwidth);
437 return -EINVAL;
438 }
439
440
441 if (sdev) {
442 par->fbtftops.write = fbtft_write_spi;
443 switch (buswidth) {
444 case 8:
445 par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
446 if (!par->startbyte)
447 par->fbtftops.verify_gpios = flexfb_verify_gpios_dc;
448 break;
449 case 9:
450 if (regwidth == 16) {
451 dev_err(dev, "argument 'regwidth': %d is not supported with buswidth=%d and SPI.\n", regwidth, buswidth);
452 return -EINVAL;
453 }
454 par->fbtftops.write_register = fbtft_write_reg8_bus9;
455 par->fbtftops.write_vmem = fbtft_write_vmem16_bus9;
456 if (par->spi->master->bits_per_word_mask
457 & SPI_BPW_MASK(9)) {
458 par->spi->bits_per_word = 9;
459 } else {
460 dev_warn(dev,
461 "9-bit SPI not available, emulating using 8-bit.\n");
462
463 par->extra = devm_kzalloc(par->info->device,
464 par->txbuf.len + (par->txbuf.len / 8) + 8,
465 GFP_KERNEL);
466 if (!par->extra) {
467 ret = -ENOMEM;
468 goto out_release;
469 }
470 par->fbtftops.write = fbtft_write_spi_emulate_9;
471 }
472 break;
473 default:
474 dev_err(dev, "argument 'buswidth': %d is not supported with SPI.\n", buswidth);
475 return -EINVAL;
476 }
477 } else {
478 par->fbtftops.verify_gpios = flexfb_verify_gpios_db;
479 switch (buswidth) {
480 case 8:
481 par->fbtftops.write = fbtft_write_gpio8_wr;
482 par->fbtftops.write_vmem = fbtft_write_vmem16_bus8;
483 break;
484 case 16:
485 par->fbtftops.write_register = fbtft_write_reg16_bus16;
486 if (latched)
487 par->fbtftops.write = fbtft_write_gpio16_wr_latched;
488 else
489 par->fbtftops.write = fbtft_write_gpio16_wr;
490 par->fbtftops.write_vmem = fbtft_write_vmem16_bus16;
491 break;
492 default:
493 dev_err(dev, "argument 'buswidth': %d is not supported with parallel.\n", buswidth);
494 return -EINVAL;
495 }
496 }
497
498
499 switch (setaddrwin) {
500 case 0:
501
502 break;
503 case 1:
504 par->fbtftops.set_addr_win = flexfb_set_addr_win_1;
505 break;
506 case 2:
507 par->fbtftops.set_addr_win = flexfb_set_addr_win_2;
508 break;
509 case 3:
510 par->fbtftops.set_addr_win = set_addr_win_3;
511 break;
512 default:
513 dev_err(dev, "argument 'setaddrwin': unknown value %d.\n",
514 setaddrwin);
515 return -EINVAL;
516 }
517
518 if (!nobacklight)
519 par->fbtftops.register_backlight = fbtft_register_backlight;
520
521 ret = fbtft_register_framebuffer(info);
522 if (ret < 0)
523 goto out_release;
524
525 return 0;
526
527out_release:
528 fbtft_framebuffer_release(info);
529
530 return ret;
531}
532
533static int flexfb_remove_common(struct device *dev, struct fb_info *info)
534{
535 struct fbtft_par *par;
536
537 if (!info)
538 return -EINVAL;
539 par = info->par;
540 if (par)
541 fbtft_par_dbg(DEBUG_DRIVER_INIT_FUNCTIONS, par, "%s()\n",
542 __func__);
543 fbtft_unregister_framebuffer(info);
544 fbtft_framebuffer_release(info);
545
546 return 0;
547}
548
549static int flexfb_probe_spi(struct spi_device *spi)
550{
551 return flexfb_probe_common(spi, NULL);
552}
553
554static int flexfb_remove_spi(struct spi_device *spi)
555{
556 struct fb_info *info = spi_get_drvdata(spi);
557
558 return flexfb_remove_common(&spi->dev, info);
559}
560
561static int flexfb_probe_pdev(struct platform_device *pdev)
562{
563 return flexfb_probe_common(NULL, pdev);
564}
565
566static int flexfb_remove_pdev(struct platform_device *pdev)
567{
568 struct fb_info *info = platform_get_drvdata(pdev);
569
570 return flexfb_remove_common(&pdev->dev, info);
571}
572
573static struct spi_driver flexfb_spi_driver = {
574 .driver = {
575 .name = DRVNAME,
576 },
577 .probe = flexfb_probe_spi,
578 .remove = flexfb_remove_spi,
579};
580
581static const struct platform_device_id flexfb_platform_ids[] = {
582 { "flexpfb", 0 },
583 { },
584};
585
586static struct platform_driver flexfb_platform_driver = {
587 .driver = {
588 .name = DRVNAME,
589 },
590 .id_table = flexfb_platform_ids,
591 .probe = flexfb_probe_pdev,
592 .remove = flexfb_remove_pdev,
593};
594
595static int __init flexfb_init(void)
596{
597 int ret, ret2;
598
599 ret = spi_register_driver(&flexfb_spi_driver);
600 ret2 = platform_driver_register(&flexfb_platform_driver);
601 if (ret < 0)
602 return ret;
603 return ret2;
604}
605
606static void __exit flexfb_exit(void)
607{
608 spi_unregister_driver(&flexfb_spi_driver);
609 platform_driver_unregister(&flexfb_platform_driver);
610}
611
612
613
614module_init(flexfb_init);
615module_exit(flexfb_exit);
616
617MODULE_DESCRIPTION("Generic FB driver for TFT LCD displays");
618MODULE_AUTHOR("Noralf Tronnes");
619MODULE_LICENSE("GPL");
620
