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12
13#define DRIVER_NAME "bfin-adv7393"
14
15#define pr_fmt(fmt) DRIVER_NAME ": " fmt
16
17#include <linux/module.h>
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/string.h>
21#include <linux/mm.h>
22#include <linux/tty.h>
23#include <linux/slab.h>
24#include <linux/delay.h>
25#include <linux/fb.h>
26#include <linux/ioport.h>
27#include <linux/init.h>
28#include <linux/types.h>
29#include <linux/interrupt.h>
30#include <linux/sched.h>
31#include <asm/blackfin.h>
32#include <asm/irq.h>
33#include <asm/dma.h>
34#include <linux/uaccess.h>
35#include <linux/gpio.h>
36#include <asm/portmux.h>
37
38#include <linux/dma-mapping.h>
39#include <linux/proc_fs.h>
40#include <linux/platform_device.h>
41#include <linux/i2c.h>
42
43#include "bfin_adv7393fb.h"
44
45static int mode = VMODE;
46static int mem = VMEM;
47static int nocursor = 1;
48
49static 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
60
61
62static struct bfin_adv7393_fb_par {
63
64
65 struct {
66 u8 Mode;
67 } vga_state;
68 atomic_t ref_count;
69} bfin_par;
70
71
72
73static 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
93static struct fb_fix_screeninfo bfin_adv7393_fb_fix = {
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
104static 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
118static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg)
119{
120 if (arg == 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
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
144 fbdev->descriptor_list_head = fbdev->av2;
145
146
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
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
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
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
200error:
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
209static 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
225static void bfin_disable_dma(void)
226{
227 bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
228}
229
230static 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
244static void bfin_enable_ppi(void)
245{
246 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
247}
248
249static void bfin_disable_ppi(void)
250{
251 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
252}
253
254static 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
259static inline int adv7393_read(struct i2c_client *client, u8 reg)
260{
261 return i2c_smbus_read_byte_data(client, reg);
262}
263
264static int
265adv7393_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
282static int adv7393_mode(struct i2c_client *client, u16 mode)
283{
284 switch (mode) {
285 case POWER_ON:
286 adv7393_write(client, 0x00, 0x1E);
287 break;
288 case POWER_DOWN:
289 adv7393_write(client, 0x00, 0x1F);
290 break;
291 case BLANK_OFF:
292 adv7393_write(client, 0x82, 0xCB);
293 break;
294 case BLANK_ON:
295 adv7393_write(client, 0x82, 0x8B);
296 break;
297 default:
298 return -EINVAL;
299 break;
300 }
301 return 0;
302}
303
304static 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();
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
325static 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
338static ssize_t
339adv7393_read_proc(struct file *file, char __user *buf,
340 size_t size, loff_t *ppos)
341{
342 static const char message[] = "Usage:\n"
343 "echo 0x[REG][Value] > adv7393\n"
344 "example: echo 0x1234 >adv7393\n"
345 "writes 0x34 into Register 0x12\n";
346 return simple_read_from_buffer(buf, size, ppos, message,
347 sizeof(message));
348}
349
350static ssize_t
351adv7393_write_proc(struct file *file, const char __user * buffer,
352 size_t count, loff_t *ppos)
353{
354 struct adv7393fb_device *fbdev = PDE_DATA(file_inode(file));
355 unsigned int val;
356 int ret;
357
358 ret = kstrtouint_from_user(buffer, count, 0, &val);
359 if (ret)
360 return -EFAULT;
361
362 adv7393_write(fbdev->client, val >> 8, val & 0xff);
363
364 return count;
365}
366
367static const struct file_operations fops = {
368 .read = adv7393_read_proc,
369 .write = adv7393_write_proc,
370 .llseek = default_llseek,
371};
372
373static int bfin_adv7393_fb_probe(struct i2c_client *client,
374 const struct i2c_device_id *id)
375{
376 int ret = 0;
377 struct proc_dir_entry *entry;
378
379 struct adv7393fb_device *fbdev = NULL;
380
381 if (mem > 2) {
382 dev_err(&client->dev, "mem out of allowed range [1;2]\n");
383 return -EINVAL;
384 }
385
386 if (mode >= ARRAY_SIZE(known_modes)) {
387 dev_err(&client->dev, "mode %d: not supported", mode);
388 return -EFAULT;
389 }
390
391 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
392 if (!fbdev) {
393 dev_err(&client->dev, "failed to allocate device private record");
394 return -ENOMEM;
395 }
396
397 i2c_set_clientdata(client, fbdev);
398
399 fbdev->modes = known_modes;
400 fbdev->client = client;
401
402 fbdev->fb_len =
403 mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
404 (fbdev->modes[mode].bpp / 8);
405
406 fbdev->line_len =
407 fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
408
409
410 if (ANOMALY_05000400) {
411 ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW,
412 "PPI0_FS3");
413 if (ret) {
414 dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
415 ret = -EBUSY;
416 goto free_fbdev;
417 }
418 }
419
420 if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
421 dev_err(&client->dev, "requesting PPI peripheral failed\n");
422 ret = -EFAULT;
423 goto free_gpio;
424 }
425
426 fbdev->fb_mem =
427 dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
428 GFP_KERNEL);
429
430 if (NULL == fbdev->fb_mem) {
431 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
432 (u32) fbdev->fb_len);
433 ret = -ENOMEM;
434 goto free_ppi_pins;
435 }
436
437 fbdev->info.screen_base = (void *)fbdev->fb_mem;
438 bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
439
440 bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
441 bfin_adv7393_fb_fix.line_length = fbdev->line_len;
442
443 if (mem > 1)
444 bfin_adv7393_fb_fix.ypanstep = 1;
445
446 bfin_adv7393_fb_defined.red.length = 5;
447 bfin_adv7393_fb_defined.green.length = 6;
448 bfin_adv7393_fb_defined.blue.length = 5;
449
450 bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
451 bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
452 bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
453 bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
454 bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
455
456 fbdev->info.fbops = &bfin_adv7393_fb_ops;
457 fbdev->info.var = bfin_adv7393_fb_defined;
458 fbdev->info.fix = bfin_adv7393_fb_fix;
459 fbdev->info.par = &bfin_par;
460 fbdev->info.flags = FBINFO_DEFAULT;
461
462 fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
463 if (!fbdev->info.pseudo_palette) {
464 dev_err(&client->dev, "failed to allocate pseudo_palette\n");
465 ret = -ENOMEM;
466 goto free_fb_mem;
467 }
468
469 if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
470 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
471 BFIN_LCD_NBR_PALETTE_ENTRIES);
472 ret = -EFAULT;
473 goto free_palette;
474 }
475
476 if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
477 dev_err(&client->dev, "unable to request PPI DMA\n");
478 ret = -EFAULT;
479 goto free_cmap;
480 }
481
482 if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
483 "PPI ERROR", fbdev) < 0) {
484 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
485 ret = -EFAULT;
486 goto free_ch_ppi;
487 }
488
489 fbdev->open = 0;
490
491 ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
492 fbdev->modes[mode].adv7393_i2c_initd_len);
493
494 if (ret) {
495 dev_err(&client->dev, "i2c attach: init error\n");
496 goto free_irq_ppi;
497 }
498
499
500 if (register_framebuffer(&fbdev->info) < 0) {
501 dev_err(&client->dev, "unable to register framebuffer\n");
502 ret = -EFAULT;
503 goto free_irq_ppi;
504 }
505
506 dev_info(&client->dev, "fb%d: %s frame buffer device\n",
507 fbdev->info.node, fbdev->info.fix.id);
508 dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
509
510 entry = proc_create_data("driver/adv7393", 0, NULL, &fops, fbdev);
511 if (!entry) {
512 dev_err(&client->dev, "unable to create /proc entry\n");
513 ret = -EFAULT;
514 goto free_fb;
515 }
516 return 0;
517
518free_fb:
519 unregister_framebuffer(&fbdev->info);
520free_irq_ppi:
521 free_irq(IRQ_PPI_ERROR, fbdev);
522free_ch_ppi:
523 free_dma(CH_PPI);
524free_cmap:
525 fb_dealloc_cmap(&fbdev->info.cmap);
526free_palette:
527 kfree(fbdev->info.pseudo_palette);
528free_fb_mem:
529 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
530 fbdev->dma_handle);
531free_ppi_pins:
532 peripheral_free_list(ppi_pins);
533free_gpio:
534 if (ANOMALY_05000400)
535 gpio_free(P_IDENT(P_PPI0_FS3));
536free_fbdev:
537 kfree(fbdev);
538
539 return ret;
540}
541
542static int bfin_adv7393_fb_open(struct fb_info *info, int user)
543{
544 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
545
546 fbdev->info.screen_base = (void *)fbdev->fb_mem;
547 if (!fbdev->info.screen_base) {
548 dev_err(&fbdev->client->dev, "unable to map device\n");
549 return -ENOMEM;
550 }
551
552 fbdev->open = 1;
553 dma_desc_list(fbdev, BUILD);
554 adv7393_mode(fbdev->client, BLANK_OFF);
555 bfin_config_ppi(fbdev);
556 bfin_config_dma(fbdev);
557 bfin_enable_ppi();
558
559 return 0;
560}
561
562static int bfin_adv7393_fb_release(struct fb_info *info, int user)
563{
564 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
565
566 adv7393_mode(fbdev->client, BLANK_ON);
567 bfin_disable_dma();
568 bfin_disable_ppi();
569 dma_desc_list(fbdev, DESTRUCT);
570 fbdev->open = 0;
571 return 0;
572}
573
574static int
575bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
576{
577
578 switch (var->bits_per_pixel) {
579 case 16:
580 var->red.offset = info->var.red.offset;
581 var->green.offset = info->var.green.offset;
582 var->blue.offset = info->var.blue.offset;
583 var->red.length = info->var.red.length;
584 var->green.length = info->var.green.length;
585 var->blue.length = info->var.blue.length;
586 var->transp.offset = 0;
587 var->transp.length = 0;
588 var->transp.msb_right = 0;
589 var->red.msb_right = 0;
590 var->green.msb_right = 0;
591 var->blue.msb_right = 0;
592 break;
593 default:
594 pr_debug("%s: depth not supported: %u BPP\n", __func__,
595 var->bits_per_pixel);
596 return -EINVAL;
597 }
598
599 if (info->var.xres != var->xres ||
600 info->var.yres != var->yres ||
601 info->var.xres_virtual != var->xres_virtual ||
602 info->var.yres_virtual != var->yres_virtual) {
603 pr_debug("%s: Resolution not supported: X%u x Y%u\n",
604 __func__, var->xres, var->yres);
605 return -EINVAL;
606 }
607
608
609
610
611
612 if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
613 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
614 __func__, var->yres_virtual);
615 return -ENOMEM;
616 }
617
618 return 0;
619}
620
621static int
622bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
623{
624 int dy;
625 u32 dmaaddr;
626 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
627
628 if (!var || !info)
629 return -EINVAL;
630
631 if (var->xoffset - info->var.xoffset) {
632
633 return -EINVAL;
634 }
635 dy = var->yoffset - info->var.yoffset;
636
637 if (dy) {
638 pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
639
640 dmaaddr = fbdev->av1->start_addr;
641 dmaaddr += (info->fix.line_length * dy);
642
643
644 fbdev->av1->start_addr = (unsigned long)dmaaddr;
645 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
646 }
647
648 return 0;
649
650}
651
652
653static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
654{
655 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
656
657 switch (blank) {
658
659 case VESA_NO_BLANKING:
660
661 adv7393_mode(fbdev->client, BLANK_OFF);
662 break;
663
664 case VESA_VSYNC_SUSPEND:
665 case VESA_HSYNC_SUSPEND:
666 case VESA_POWERDOWN:
667
668 adv7393_mode(fbdev->client, BLANK_ON);
669 break;
670
671 default:
672 return -EINVAL;
673 break;
674 }
675 return 0;
676}
677
678int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
679{
680 if (nocursor)
681 return 0;
682 else
683 return -EINVAL;
684}
685
686static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
687 u_int blue, u_int transp,
688 struct fb_info *info)
689{
690 if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
691 return -EINVAL;
692
693 if (info->var.grayscale)
694
695 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
696
697 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
698 u32 value;
699
700 if (regno > 16)
701 return -EINVAL;
702
703 red >>= (16 - info->var.red.length);
704 green >>= (16 - info->var.green.length);
705 blue >>= (16 - info->var.blue.length);
706
707 value = (red << info->var.red.offset) |
708 (green << info->var.green.offset)|
709 (blue << info->var.blue.offset);
710 value &= 0xFFFF;
711
712 ((u32 *) (info->pseudo_palette))[regno] = value;
713 }
714
715 return 0;
716}
717
718static int bfin_adv7393_fb_remove(struct i2c_client *client)
719{
720 struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
721
722 adv7393_mode(client, POWER_DOWN);
723
724 if (fbdev->fb_mem)
725 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
726 free_dma(CH_PPI);
727 free_irq(IRQ_PPI_ERROR, fbdev);
728 unregister_framebuffer(&fbdev->info);
729 remove_proc_entry("driver/adv7393", NULL);
730 fb_dealloc_cmap(&fbdev->info.cmap);
731 kfree(fbdev->info.pseudo_palette);
732
733 if (ANOMALY_05000400)
734 gpio_free(P_IDENT(P_PPI0_FS3));
735 peripheral_free_list(ppi_pins);
736 kfree(fbdev);
737
738 return 0;
739}
740
741#ifdef CONFIG_PM
742static int bfin_adv7393_fb_suspend(struct device *dev)
743{
744 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
745
746 if (fbdev->open) {
747 bfin_disable_dma();
748 bfin_disable_ppi();
749 dma_desc_list(fbdev, DESTRUCT);
750 }
751 adv7393_mode(fbdev->client, POWER_DOWN);
752
753 return 0;
754}
755
756static int bfin_adv7393_fb_resume(struct device *dev)
757{
758 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
759
760 adv7393_mode(fbdev->client, POWER_ON);
761
762 if (fbdev->open) {
763 dma_desc_list(fbdev, BUILD);
764 bfin_config_ppi(fbdev);
765 bfin_config_dma(fbdev);
766 bfin_enable_ppi();
767 }
768
769 return 0;
770}
771
772static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
773 .suspend = bfin_adv7393_fb_suspend,
774 .resume = bfin_adv7393_fb_resume,
775};
776#endif
777
778static const struct i2c_device_id bfin_adv7393_id[] = {
779 {DRIVER_NAME, 0},
780 {}
781};
782
783MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
784
785static struct i2c_driver bfin_adv7393_fb_driver = {
786 .driver = {
787 .name = DRIVER_NAME,
788#ifdef CONFIG_PM
789 .pm = &bfin_adv7393_dev_pm_ops,
790#endif
791 },
792 .probe = bfin_adv7393_fb_probe,
793 .remove = bfin_adv7393_fb_remove,
794 .id_table = bfin_adv7393_id,
795};
796
797static int __init bfin_adv7393_fb_driver_init(void)
798{
799#if IS_ENABLED(CONFIG_I2C_BLACKFIN_TWI)
800 request_module("i2c-bfin-twi");
801#else
802 request_module("i2c-gpio");
803#endif
804
805 return i2c_add_driver(&bfin_adv7393_fb_driver);
806}
807module_init(bfin_adv7393_fb_driver_init);
808
809static void __exit bfin_adv7393_fb_driver_cleanup(void)
810{
811 i2c_del_driver(&bfin_adv7393_fb_driver);
812}
813module_exit(bfin_adv7393_fb_driver_cleanup);
814
815MODULE_LICENSE("GPL");
816MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
817MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
818
819module_param(mode, int, 0);
820MODULE_PARM_DESC(mode,
821 "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
822
823module_param(mem, int, 0);
824MODULE_PARM_DESC(mem,
825 "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
826
827module_param(nocursor, int, 0644);
828MODULE_PARM_DESC(nocursor, "cursor enable/disable");
829
