1 /*
2 * Frame buffer driver for ADV7393/2 video encoder
3 *
4 * Copyright 2006-2009 Analog Devices Inc.
5 * Licensed under the GPL-2 or late.
6 */
7
8 /*
9 * TODO: Remove Globals
10 * TODO: Code Cleanup
11 */
12
13 #define pr_fmt(fmt) DRIVER_NAME ": " fmt
14
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/string.h>
19 #include <linux/mm.h>
20 #include <linux/tty.h>
21 #include <linux/slab.h>
22 #include <linux/delay.h>
23 #include <linux/fb.h>
24 #include <linux/ioport.h>
25 #include <linux/init.h>
26 #include <linux/types.h>
27 #include <linux/interrupt.h>
28 #include <linux/sched.h>
29 #include <asm/blackfin.h>
30 #include <asm/irq.h>
31 #include <asm/dma.h>
32 #include <linux/uaccess.h>
33 #include <linux/gpio.h>
34 #include <asm/portmux.h>
35
36 #include <linux/dma-mapping.h>
37 #include <linux/proc_fs.h>
38 #include <linux/platform_device.h>
39
40 #include <linux/i2c.h>
41 #include <linux/i2c-dev.h>
42
43 #include "bfin_adv7393fb.h"
44
45 static int mode = VMODE;
46 static int mem = VMEM;
47 static int nocursor = 1;
48
49 static const unsigned short ppi_pins[] = {
50 P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2,
51 P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3,
52 P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7,
53 P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11,
54 P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15,
55 0
56 };
57
58 /*
59 * card parameters
60 */
61
62 static struct bfin_adv7393_fb_par {
63 /* structure holding blackfin / adv7393 paramters when
64 screen is blanked */
65 struct {
66 u8 Mode; /* ntsc/pal/? */
67 } vga_state;
68 atomic_t ref_count;
69 } bfin_par;
70
71 /* --------------------------------------------------------------------- */
72
73 static struct fb_var_screeninfo bfin_adv7393_fb_defined = {
74 .xres = 720,
75 .yres = 480,
76 .xres_virtual = 720,
77 .yres_virtual = 480,
78 .bits_per_pixel = 16,
79 .activate = FB_ACTIVATE_TEST,
80 .height = -1,
81 .width = -1,
82 .left_margin = 0,
83 .right_margin = 0,
84 .upper_margin = 0,
85 .lower_margin = 0,
86 .vmode = FB_VMODE_INTERLACED,
87 .red = {11, 5, 0},
88 .green = {5, 6, 0},
89 .blue = {0, 5, 0},
90 .transp = {0, 0, 0},
91 };
92
93 static struct fb_fix_screeninfo bfin_adv7393_fb_fix __devinitdata = {
94 .id = "BFIN ADV7393",
95 .smem_len = 720 * 480 * 2,
96 .type = FB_TYPE_PACKED_PIXELS,
97 .visual = FB_VISUAL_TRUECOLOR,
98 .xpanstep = 0,
99 .ypanstep = 0,
100 .line_length = 720 * 2,
101 .accel = FB_ACCEL_NONE
102 };
103
104 static struct fb_ops bfin_adv7393_fb_ops = {
105 .owner = THIS_MODULE,
106 .fb_open = bfin_adv7393_fb_open,
107 .fb_release = bfin_adv7393_fb_release,
108 .fb_check_var = bfin_adv7393_fb_check_var,
109 .fb_pan_display = bfin_adv7393_fb_pan_display,
110 .fb_blank = bfin_adv7393_fb_blank,
111 .fb_fillrect = cfb_fillrect,
112 .fb_copyarea = cfb_copyarea,
113 .fb_imageblit = cfb_imageblit,
114 .fb_cursor = bfin_adv7393_fb_cursor,
115 .fb_setcolreg = bfin_adv7393_fb_setcolreg,
116 };
117
dma_desc_list(struct adv7393fb_device * fbdev,u16 arg)118 static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg)
119 {
120 if (arg == BUILD) { /* Build */
121 fbdev->vb1 = l1_data_sram_zalloc(sizeof(struct dmasg));
122 if (fbdev->vb1 == NULL)
123 goto error;
124
125 fbdev->av1 = l1_data_sram_zalloc(sizeof(struct dmasg));
126 if (fbdev->av1 == NULL)
127 goto error;
128
129 fbdev->vb2 = l1_data_sram_zalloc(sizeof(struct dmasg));
130 if (fbdev->vb2 == NULL)
131 goto error;
132
133 fbdev->av2 = l1_data_sram_zalloc(sizeof(struct dmasg));
134 if (fbdev->av2 == NULL)
135 goto error;
136
137 /* Build linked DMA descriptor list */
138 fbdev->vb1->next_desc_addr = fbdev->av1;
139 fbdev->av1->next_desc_addr = fbdev->vb2;
140 fbdev->vb2->next_desc_addr = fbdev->av2;
141 fbdev->av2->next_desc_addr = fbdev->vb1;
142
143 /* Save list head */
144 fbdev->descriptor_list_head = fbdev->av2;
145
146 /* Vertical Blanking Field 1 */
147 fbdev->vb1->start_addr = VB_DUMMY_MEMORY_SOURCE;
148 fbdev->vb1->cfg = DMA_CFG_VAL;
149
150 fbdev->vb1->x_count =
151 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
152
153 fbdev->vb1->x_modify = 0;
154 fbdev->vb1->y_count = fbdev->modes[mode].vb1_lines;
155 fbdev->vb1->y_modify = 0;
156
157 /* Active Video Field 1 */
158
159 fbdev->av1->start_addr = (unsigned long)fbdev->fb_mem;
160 fbdev->av1->cfg = DMA_CFG_VAL;
161 fbdev->av1->x_count =
162 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
163 fbdev->av1->x_modify = fbdev->modes[mode].bpp / 8;
164 fbdev->av1->y_count = fbdev->modes[mode].a_lines;
165 fbdev->av1->y_modify =
166 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
167 1) * (fbdev->modes[mode].bpp / 8);
168
169 /* Vertical Blanking Field 2 */
170
171 fbdev->vb2->start_addr = VB_DUMMY_MEMORY_SOURCE;
172 fbdev->vb2->cfg = DMA_CFG_VAL;
173 fbdev->vb2->x_count =
174 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
175
176 fbdev->vb2->x_modify = 0;
177 fbdev->vb2->y_count = fbdev->modes[mode].vb2_lines;
178 fbdev->vb2->y_modify = 0;
179
180 /* Active Video Field 2 */
181
182 fbdev->av2->start_addr =
183 (unsigned long)fbdev->fb_mem + fbdev->line_len;
184
185 fbdev->av2->cfg = DMA_CFG_VAL;
186
187 fbdev->av2->x_count =
188 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
189
190 fbdev->av2->x_modify = (fbdev->modes[mode].bpp / 8);
191 fbdev->av2->y_count = fbdev->modes[mode].a_lines;
192
193 fbdev->av2->y_modify =
194 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
195 1) * (fbdev->modes[mode].bpp / 8);
196
197 return 1;
198 }
199
200 error:
201 l1_data_sram_free(fbdev->vb1);
202 l1_data_sram_free(fbdev->av1);
203 l1_data_sram_free(fbdev->vb2);
204 l1_data_sram_free(fbdev->av2);
205
206 return 0;
207 }
208
bfin_config_dma(struct adv7393fb_device * fbdev)209 static int bfin_config_dma(struct adv7393fb_device *fbdev)
210 {
211 BUG_ON(!(fbdev->fb_mem));
212
213 set_dma_x_count(CH_PPI, fbdev->descriptor_list_head->x_count);
214 set_dma_x_modify(CH_PPI, fbdev->descriptor_list_head->x_modify);
215 set_dma_y_count(CH_PPI, fbdev->descriptor_list_head->y_count);
216 set_dma_y_modify(CH_PPI, fbdev->descriptor_list_head->y_modify);
217 set_dma_start_addr(CH_PPI, fbdev->descriptor_list_head->start_addr);
218 set_dma_next_desc_addr(CH_PPI,
219 fbdev->descriptor_list_head->next_desc_addr);
220 set_dma_config(CH_PPI, fbdev->descriptor_list_head->cfg);
221
222 return 1;
223 }
224
bfin_disable_dma(void)225 static void bfin_disable_dma(void)
226 {
227 bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
228 }
229
bfin_config_ppi(struct adv7393fb_device * fbdev)230 static void bfin_config_ppi(struct adv7393fb_device *fbdev)
231 {
232 if (ANOMALY_05000183) {
233 bfin_write_TIMER2_CONFIG(WDTH_CAP);
234 bfin_write_TIMER_ENABLE(TIMEN2);
235 }
236
237 bfin_write_PPI_CONTROL(0x381E);
238 bfin_write_PPI_FRAME(fbdev->modes[mode].tot_lines);
239 bfin_write_PPI_COUNT(fbdev->modes[mode].xres +
240 fbdev->modes[mode].boeft_blank - 1);
241 bfin_write_PPI_DELAY(fbdev->modes[mode].aoeft_blank - 1);
242 }
243
bfin_enable_ppi(void)244 static void bfin_enable_ppi(void)
245 {
246 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
247 }
248
bfin_disable_ppi(void)249 static void bfin_disable_ppi(void)
250 {
251 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
252 }
253
adv7393_write(struct i2c_client * client,u8 reg,u8 value)254 static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value)
255 {
256 return i2c_smbus_write_byte_data(client, reg, value);
257 }
258
adv7393_read(struct i2c_client * client,u8 reg)259 static inline int adv7393_read(struct i2c_client *client, u8 reg)
260 {
261 return i2c_smbus_read_byte_data(client, reg);
262 }
263
264 static int
adv7393_write_block(struct i2c_client * client,const u8 * data,unsigned int len)265 adv7393_write_block(struct i2c_client *client,
266 const u8 *data, unsigned int len)
267 {
268 int ret = -1;
269 u8 reg;
270
271 while (len >= 2) {
272 reg = *data++;
273 ret = adv7393_write(client, reg, *data++);
274 if (ret < 0)
275 break;
276 len -= 2;
277 }
278
279 return ret;
280 }
281
adv7393_mode(struct i2c_client * client,u16 mode)282 static int adv7393_mode(struct i2c_client *client, u16 mode)
283 {
284 switch (mode) {
285 case POWER_ON: /* ADV7393 Sleep mode OFF */
286 adv7393_write(client, 0x00, 0x1E);
287 break;
288 case POWER_DOWN: /* ADV7393 Sleep mode ON */
289 adv7393_write(client, 0x00, 0x1F);
290 break;
291 case BLANK_OFF: /* Pixel Data Valid */
292 adv7393_write(client, 0x82, 0xCB);
293 break;
294 case BLANK_ON: /* Pixel Data Invalid */
295 adv7393_write(client, 0x82, 0x8B);
296 break;
297 default:
298 return -EINVAL;
299 break;
300 }
301 return 0;
302 }
303
ppi_irq_error(int irq,void * dev_id)304 static irqreturn_t ppi_irq_error(int irq, void *dev_id)
305 {
306
307 struct adv7393fb_device *fbdev = (struct adv7393fb_device *)dev_id;
308
309 u16 status = bfin_read_PPI_STATUS();
310
311 pr_debug("%s: PPI Status = 0x%X\n", __func__, status);
312
313 if (status) {
314 bfin_disable_dma(); /* TODO: Check Sequence */
315 bfin_disable_ppi();
316 bfin_clear_PPI_STATUS();
317 bfin_config_dma(fbdev);
318 bfin_enable_ppi();
319 }
320
321 return IRQ_HANDLED;
322
323 }
324
proc_output(char * buf)325 static int proc_output(char *buf)
326 {
327 char *p = buf;
328
329 p += sprintf(p,
330 "Usage:\n"
331 "echo 0x[REG][Value] > adv7393\n"
332 "example: echo 0x1234 >adv7393\n"
333 "writes 0x34 into Register 0x12\n");
334
335 return p - buf;
336 }
337
338 static int
adv7393_read_proc(char * page,char ** start,off_t off,int count,int * eof,void * data)339 adv7393_read_proc(char *page, char **start, off_t off,
340 int count, int *eof, void *data)
341 {
342 int len;
343
344 len = proc_output(page);
345 if (len <= off + count)
346 *eof = 1;
347 *start = page + off;
348 len -= off;
349 if (len > count)
350 len = count;
351 if (len < 0)
352 len = 0;
353 return len;
354 }
355
356 static int
adv7393_write_proc(struct file * file,const char __user * buffer,unsigned long count,void * data)357 adv7393_write_proc(struct file *file, const char __user * buffer,
358 unsigned long count, void *data)
359 {
360 struct adv7393fb_device *fbdev = data;
361 char line[8];
362 unsigned int val;
363 int ret;
364
365 ret = copy_from_user(line, buffer, count);
366 if (ret)
367 return -EFAULT;
368
369 val = simple_strtoul(line, NULL, 0);
370 adv7393_write(fbdev->client, val >> 8, val & 0xff);
371
372 return count;
373 }
374
bfin_adv7393_fb_probe(struct i2c_client * client,const struct i2c_device_id * id)375 static int __devinit bfin_adv7393_fb_probe(struct i2c_client *client,
376 const struct i2c_device_id *id)
377 {
378 int ret = 0;
379 struct proc_dir_entry *entry;
380 int num_modes = ARRAY_SIZE(known_modes);
381
382 struct adv7393fb_device *fbdev = NULL;
383
384 if (mem > 2) {
385 dev_err(&client->dev, "mem out of allowed range [1;2]\n");
386 return -EINVAL;
387 }
388
389 if (mode > num_modes) {
390 dev_err(&client->dev, "mode %d: not supported", mode);
391 return -EFAULT;
392 }
393
394 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
395 if (!fbdev) {
396 dev_err(&client->dev, "failed to allocate device private record");
397 return -ENOMEM;
398 }
399
400 i2c_set_clientdata(client, fbdev);
401
402 fbdev->modes = known_modes;
403 fbdev->client = client;
404
405 fbdev->fb_len =
406 mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
407 (fbdev->modes[mode].bpp / 8);
408
409 fbdev->line_len =
410 fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
411
412 /* Workaround "PPI Does Not Start Properly In Specific Mode" */
413 if (ANOMALY_05000400) {
414 if (gpio_request(P_IDENT(P_PPI0_FS3), "PPI0_FS3")) {
415 dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
416 ret = -EBUSY;
417 goto out_8;
418 }
419 gpio_direction_output(P_IDENT(P_PPI0_FS3), 0);
420 }
421
422 if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
423 dev_err(&client->dev, "requesting PPI peripheral failed\n");
424 ret = -EFAULT;
425 goto out_8;
426 }
427
428 fbdev->fb_mem =
429 dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
430 GFP_KERNEL);
431
432 if (NULL == fbdev->fb_mem) {
433 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
434 (u32) fbdev->fb_len);
435 ret = -ENOMEM;
436 goto out_7;
437 }
438
439 fbdev->info.screen_base = (void *)fbdev->fb_mem;
440 bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
441
442 bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
443 bfin_adv7393_fb_fix.line_length = fbdev->line_len;
444
445 if (mem > 1)
446 bfin_adv7393_fb_fix.ypanstep = 1;
447
448 bfin_adv7393_fb_defined.red.length = 5;
449 bfin_adv7393_fb_defined.green.length = 6;
450 bfin_adv7393_fb_defined.blue.length = 5;
451
452 bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
453 bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
454 bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
455 bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
456 bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
457
458 fbdev->info.fbops = &bfin_adv7393_fb_ops;
459 fbdev->info.var = bfin_adv7393_fb_defined;
460 fbdev->info.fix = bfin_adv7393_fb_fix;
461 fbdev->info.par = &bfin_par;
462 fbdev->info.flags = FBINFO_DEFAULT;
463
464 fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
465 if (!fbdev->info.pseudo_palette) {
466 dev_err(&client->dev, "failed to allocate pseudo_palette\n");
467 ret = -ENOMEM;
468 goto out_6;
469 }
470
471 if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
472 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
473 BFIN_LCD_NBR_PALETTE_ENTRIES);
474 ret = -EFAULT;
475 goto out_5;
476 }
477
478 if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
479 dev_err(&client->dev, "unable to request PPI DMA\n");
480 ret = -EFAULT;
481 goto out_4;
482 }
483
484 if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
485 "PPI ERROR", fbdev) < 0) {
486 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
487 ret = -EFAULT;
488 goto out_3;
489 }
490
491 fbdev->open = 0;
492
493 ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
494 fbdev->modes[mode].adv7393_i2c_initd_len);
495
496 if (ret) {
497 dev_err(&client->dev, "i2c attach: init error\n");
498 goto out_1;
499 }
500
501
502 if (register_framebuffer(&fbdev->info) < 0) {
503 dev_err(&client->dev, "unable to register framebuffer\n");
504 ret = -EFAULT;
505 goto out_1;
506 }
507
508 dev_info(&client->dev, "fb%d: %s frame buffer device\n",
509 fbdev->info.node, fbdev->info.fix.id);
510 dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
511
512 entry = create_proc_entry("driver/adv7393", 0, NULL);
513 if (!entry) {
514 dev_err(&client->dev, "unable to create /proc entry\n");
515 ret = -EFAULT;
516 goto out_0;
517 }
518
519 entry->read_proc = adv7393_read_proc;
520 entry->write_proc = adv7393_write_proc;
521 entry->data = fbdev;
522
523 return 0;
524
525 out_0:
526 unregister_framebuffer(&fbdev->info);
527 out_1:
528 free_irq(IRQ_PPI_ERROR, fbdev);
529 out_3:
530 free_dma(CH_PPI);
531 out_4:
532 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
533 fbdev->dma_handle);
534 out_5:
535 fb_dealloc_cmap(&fbdev->info.cmap);
536 out_6:
537 kfree(fbdev->info.pseudo_palette);
538 out_7:
539 peripheral_free_list(ppi_pins);
540 out_8:
541 kfree(fbdev);
542
543 return ret;
544 }
545
bfin_adv7393_fb_open(struct fb_info * info,int user)546 static int bfin_adv7393_fb_open(struct fb_info *info, int user)
547 {
548 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
549
550 fbdev->info.screen_base = (void *)fbdev->fb_mem;
551 if (!fbdev->info.screen_base) {
552 dev_err(&fbdev->client->dev, "unable to map device\n");
553 return -ENOMEM;
554 }
555
556 fbdev->open = 1;
557 dma_desc_list(fbdev, BUILD);
558 adv7393_mode(fbdev->client, BLANK_OFF);
559 bfin_config_ppi(fbdev);
560 bfin_config_dma(fbdev);
561 bfin_enable_ppi();
562
563 return 0;
564 }
565
bfin_adv7393_fb_release(struct fb_info * info,int user)566 static int bfin_adv7393_fb_release(struct fb_info *info, int user)
567 {
568 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
569
570 adv7393_mode(fbdev->client, BLANK_ON);
571 bfin_disable_dma();
572 bfin_disable_ppi();
573 dma_desc_list(fbdev, DESTRUCT);
574 fbdev->open = 0;
575 return 0;
576 }
577
578 static int
bfin_adv7393_fb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)579 bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
580 {
581
582 switch (var->bits_per_pixel) {
583 case 16:/* DIRECTCOLOUR, 64k */
584 var->red.offset = info->var.red.offset;
585 var->green.offset = info->var.green.offset;
586 var->blue.offset = info->var.blue.offset;
587 var->red.length = info->var.red.length;
588 var->green.length = info->var.green.length;
589 var->blue.length = info->var.blue.length;
590 var->transp.offset = 0;
591 var->transp.length = 0;
592 var->transp.msb_right = 0;
593 var->red.msb_right = 0;
594 var->green.msb_right = 0;
595 var->blue.msb_right = 0;
596 break;
597 default:
598 pr_debug("%s: depth not supported: %u BPP\n", __func__,
599 var->bits_per_pixel);
600 return -EINVAL;
601 }
602
603 if (info->var.xres != var->xres ||
604 info->var.yres != var->yres ||
605 info->var.xres_virtual != var->xres_virtual ||
606 info->var.yres_virtual != var->yres_virtual) {
607 pr_debug("%s: Resolution not supported: X%u x Y%u\n",
608 __func__, var->xres, var->yres);
609 return -EINVAL;
610 }
611
612 /*
613 * Memory limit
614 */
615
616 if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
617 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
618 __func__, var->yres_virtual);
619 return -ENOMEM;
620 }
621
622 return 0;
623 }
624
625 static int
bfin_adv7393_fb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)626 bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
627 {
628 int dy;
629 u32 dmaaddr;
630 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
631
632 if (!var || !info)
633 return -EINVAL;
634
635 if (var->xoffset - info->var.xoffset) {
636 /* No support for X panning for now! */
637 return -EINVAL;
638 }
639 dy = var->yoffset - info->var.yoffset;
640
641 if (dy) {
642 pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
643
644 dmaaddr = fbdev->av1->start_addr;
645 dmaaddr += (info->fix.line_length * dy);
646 /* TODO: Wait for current frame to finished */
647
648 fbdev->av1->start_addr = (unsigned long)dmaaddr;
649 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
650 }
651
652 return 0;
653
654 }
655
656 /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
bfin_adv7393_fb_blank(int blank,struct fb_info * info)657 static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
658 {
659 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
660
661 switch (blank) {
662
663 case VESA_NO_BLANKING:
664 /* Turn on panel */
665 adv7393_mode(fbdev->client, BLANK_OFF);
666 break;
667
668 case VESA_VSYNC_SUSPEND:
669 case VESA_HSYNC_SUSPEND:
670 case VESA_POWERDOWN:
671 /* Turn off panel */
672 adv7393_mode(fbdev->client, BLANK_ON);
673 break;
674
675 default:
676 return -EINVAL;
677 break;
678 }
679 return 0;
680 }
681
bfin_adv7393_fb_cursor(struct fb_info * info,struct fb_cursor * cursor)682 int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
683 {
684 if (nocursor)
685 return 0;
686 else
687 return -EINVAL; /* just to force soft_cursor() call */
688 }
689
bfin_adv7393_fb_setcolreg(u_int regno,u_int red,u_int green,u_int blue,u_int transp,struct fb_info * info)690 static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
691 u_int blue, u_int transp,
692 struct fb_info *info)
693 {
694 if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
695 return -EINVAL;
696
697 if (info->var.grayscale)
698 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
699 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
700
701 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
702 u32 value;
703 /* Place color in the pseudopalette */
704 if (regno > 16)
705 return -EINVAL;
706
707 red >>= (16 - info->var.red.length);
708 green >>= (16 - info->var.green.length);
709 blue >>= (16 - info->var.blue.length);
710
711 value = (red << info->var.red.offset) |
712 (green << info->var.green.offset)|
713 (blue << info->var.blue.offset);
714 value &= 0xFFFF;
715
716 ((u32 *) (info->pseudo_palette))[regno] = value;
717 }
718
719 return 0;
720 }
721
bfin_adv7393_fb_remove(struct i2c_client * client)722 static int __devexit bfin_adv7393_fb_remove(struct i2c_client *client)
723 {
724 struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
725
726 adv7393_mode(client, POWER_DOWN);
727
728 if (fbdev->fb_mem)
729 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
730 free_dma(CH_PPI);
731 free_irq(IRQ_PPI_ERROR, fbdev);
732 unregister_framebuffer(&fbdev->info);
733 remove_proc_entry("driver/adv7393", NULL);
734 fb_dealloc_cmap(&fbdev->info.cmap);
735 kfree(fbdev->info.pseudo_palette);
736
737 if (ANOMALY_05000400)
738 gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
739 peripheral_free_list(ppi_pins);
740 kfree(fbdev);
741
742 return 0;
743 }
744
745 #ifdef CONFIG_PM
bfin_adv7393_fb_suspend(struct device * dev)746 static int bfin_adv7393_fb_suspend(struct device *dev)
747 {
748 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
749
750 if (fbdev->open) {
751 bfin_disable_dma();
752 bfin_disable_ppi();
753 dma_desc_list(fbdev, DESTRUCT);
754 }
755 adv7393_mode(fbdev->client, POWER_DOWN);
756
757 return 0;
758 }
759
bfin_adv7393_fb_resume(struct device * dev)760 static int bfin_adv7393_fb_resume(struct device *dev)
761 {
762 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
763
764 adv7393_mode(fbdev->client, POWER_ON);
765
766 if (fbdev->open) {
767 dma_desc_list(fbdev, BUILD);
768 bfin_config_ppi(fbdev);
769 bfin_config_dma(fbdev);
770 bfin_enable_ppi();
771 }
772
773 return 0;
774 }
775
776 static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
777 .suspend = bfin_adv7393_fb_suspend,
778 .resume = bfin_adv7393_fb_resume,
779 };
780 #endif
781
782 static const struct i2c_device_id bfin_adv7393_id[] = {
783 {DRIVER_NAME, 0},
784 {}
785 };
786
787 MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
788
789 static struct i2c_driver bfin_adv7393_fb_driver = {
790 .driver = {
791 .name = DRIVER_NAME,
792 #ifdef CONFIG_PM
793 .pm = &bfin_adv7393_dev_pm_ops,
794 #endif
795 },
796 .probe = bfin_adv7393_fb_probe,
797 .remove = __devexit_p(bfin_adv7393_fb_remove),
798 .id_table = bfin_adv7393_id,
799 };
800
bfin_adv7393_fb_driver_init(void)801 static int __init bfin_adv7393_fb_driver_init(void)
802 {
803 #if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
804 request_module("i2c-bfin-twi");
805 #else
806 request_module("i2c-gpio");
807 #endif
808
809 return i2c_add_driver(&bfin_adv7393_fb_driver);
810 }
811 module_init(bfin_adv7393_fb_driver_init);
812
bfin_adv7393_fb_driver_cleanup(void)813 static void __exit bfin_adv7393_fb_driver_cleanup(void)
814 {
815 i2c_del_driver(&bfin_adv7393_fb_driver);
816 }
817 module_exit(bfin_adv7393_fb_driver_cleanup);
818
819 MODULE_LICENSE("GPL");
820 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
821 MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
822
823 module_param(mode, int, 0);
824 MODULE_PARM_DESC(mode,
825 "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
826
827 module_param(mem, int, 0);
828 MODULE_PARM_DESC(mem,
829 "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
830
831 module_param(nocursor, int, 0644);
832 MODULE_PARM_DESC(nocursor, "cursor enable/disable");
833