blob: 1a268a294478d3de76613efd6581e542a296acc5 [file] [log] [blame]
Michael Hennerichcffd9342010-11-24 09:33:59 +00001/*
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>
Michael Hennerichcffd9342010-11-24 09:33:59 +000039#include <linux/i2c.h>
Michael Hennerichcffd9342010-11-24 09:33:59 +000040
41#include "bfin_adv7393fb.h"
42
43static int mode = VMODE;
44static int mem = VMEM;
45static int nocursor = 1;
46
47static const unsigned short ppi_pins[] = {
48 P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2,
49 P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3,
50 P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7,
51 P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11,
52 P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15,
53 0
54};
55
56/*
57 * card parameters
58 */
59
60static struct bfin_adv7393_fb_par {
61 /* structure holding blackfin / adv7393 paramters when
62 screen is blanked */
63 struct {
64 u8 Mode; /* ntsc/pal/? */
65 } vga_state;
66 atomic_t ref_count;
67} bfin_par;
68
69/* --------------------------------------------------------------------- */
70
71static struct fb_var_screeninfo bfin_adv7393_fb_defined = {
72 .xres = 720,
73 .yres = 480,
74 .xres_virtual = 720,
75 .yres_virtual = 480,
76 .bits_per_pixel = 16,
77 .activate = FB_ACTIVATE_TEST,
78 .height = -1,
79 .width = -1,
80 .left_margin = 0,
81 .right_margin = 0,
82 .upper_margin = 0,
83 .lower_margin = 0,
84 .vmode = FB_VMODE_INTERLACED,
85 .red = {11, 5, 0},
86 .green = {5, 6, 0},
87 .blue = {0, 5, 0},
88 .transp = {0, 0, 0},
89};
90
91static struct fb_fix_screeninfo bfin_adv7393_fb_fix __devinitdata = {
92 .id = "BFIN ADV7393",
93 .smem_len = 720 * 480 * 2,
94 .type = FB_TYPE_PACKED_PIXELS,
95 .visual = FB_VISUAL_TRUECOLOR,
96 .xpanstep = 0,
97 .ypanstep = 0,
98 .line_length = 720 * 2,
99 .accel = FB_ACCEL_NONE
100};
101
102static struct fb_ops bfin_adv7393_fb_ops = {
103 .owner = THIS_MODULE,
104 .fb_open = bfin_adv7393_fb_open,
105 .fb_release = bfin_adv7393_fb_release,
106 .fb_check_var = bfin_adv7393_fb_check_var,
107 .fb_pan_display = bfin_adv7393_fb_pan_display,
108 .fb_blank = bfin_adv7393_fb_blank,
109 .fb_fillrect = cfb_fillrect,
110 .fb_copyarea = cfb_copyarea,
111 .fb_imageblit = cfb_imageblit,
112 .fb_cursor = bfin_adv7393_fb_cursor,
113 .fb_setcolreg = bfin_adv7393_fb_setcolreg,
114};
115
116static int dma_desc_list(struct adv7393fb_device *fbdev, u16 arg)
117{
118 if (arg == BUILD) { /* Build */
119 fbdev->vb1 = l1_data_sram_zalloc(sizeof(struct dmasg));
120 if (fbdev->vb1 == NULL)
121 goto error;
122
123 fbdev->av1 = l1_data_sram_zalloc(sizeof(struct dmasg));
124 if (fbdev->av1 == NULL)
125 goto error;
126
127 fbdev->vb2 = l1_data_sram_zalloc(sizeof(struct dmasg));
128 if (fbdev->vb2 == NULL)
129 goto error;
130
131 fbdev->av2 = l1_data_sram_zalloc(sizeof(struct dmasg));
132 if (fbdev->av2 == NULL)
133 goto error;
134
135 /* Build linked DMA descriptor list */
136 fbdev->vb1->next_desc_addr = fbdev->av1;
137 fbdev->av1->next_desc_addr = fbdev->vb2;
138 fbdev->vb2->next_desc_addr = fbdev->av2;
139 fbdev->av2->next_desc_addr = fbdev->vb1;
140
141 /* Save list head */
142 fbdev->descriptor_list_head = fbdev->av2;
143
144 /* Vertical Blanking Field 1 */
145 fbdev->vb1->start_addr = VB_DUMMY_MEMORY_SOURCE;
146 fbdev->vb1->cfg = DMA_CFG_VAL;
147
148 fbdev->vb1->x_count =
149 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
150
151 fbdev->vb1->x_modify = 0;
152 fbdev->vb1->y_count = fbdev->modes[mode].vb1_lines;
153 fbdev->vb1->y_modify = 0;
154
155 /* Active Video Field 1 */
156
157 fbdev->av1->start_addr = (unsigned long)fbdev->fb_mem;
158 fbdev->av1->cfg = DMA_CFG_VAL;
159 fbdev->av1->x_count =
160 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
161 fbdev->av1->x_modify = fbdev->modes[mode].bpp / 8;
162 fbdev->av1->y_count = fbdev->modes[mode].a_lines;
163 fbdev->av1->y_modify =
164 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
165 1) * (fbdev->modes[mode].bpp / 8);
166
167 /* Vertical Blanking Field 2 */
168
169 fbdev->vb2->start_addr = VB_DUMMY_MEMORY_SOURCE;
170 fbdev->vb2->cfg = DMA_CFG_VAL;
171 fbdev->vb2->x_count =
172 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
173
174 fbdev->vb2->x_modify = 0;
175 fbdev->vb2->y_count = fbdev->modes[mode].vb2_lines;
176 fbdev->vb2->y_modify = 0;
177
178 /* Active Video Field 2 */
179
180 fbdev->av2->start_addr =
181 (unsigned long)fbdev->fb_mem + fbdev->line_len;
182
183 fbdev->av2->cfg = DMA_CFG_VAL;
184
185 fbdev->av2->x_count =
186 fbdev->modes[mode].xres + fbdev->modes[mode].boeft_blank;
187
188 fbdev->av2->x_modify = (fbdev->modes[mode].bpp / 8);
189 fbdev->av2->y_count = fbdev->modes[mode].a_lines;
190
191 fbdev->av2->y_modify =
192 (fbdev->modes[mode].xres - fbdev->modes[mode].boeft_blank +
193 1) * (fbdev->modes[mode].bpp / 8);
194
195 return 1;
196 }
197
198error:
199 l1_data_sram_free(fbdev->vb1);
200 l1_data_sram_free(fbdev->av1);
201 l1_data_sram_free(fbdev->vb2);
202 l1_data_sram_free(fbdev->av2);
203
204 return 0;
205}
206
207static int bfin_config_dma(struct adv7393fb_device *fbdev)
208{
209 BUG_ON(!(fbdev->fb_mem));
210
211 set_dma_x_count(CH_PPI, fbdev->descriptor_list_head->x_count);
212 set_dma_x_modify(CH_PPI, fbdev->descriptor_list_head->x_modify);
213 set_dma_y_count(CH_PPI, fbdev->descriptor_list_head->y_count);
214 set_dma_y_modify(CH_PPI, fbdev->descriptor_list_head->y_modify);
215 set_dma_start_addr(CH_PPI, fbdev->descriptor_list_head->start_addr);
216 set_dma_next_desc_addr(CH_PPI,
217 fbdev->descriptor_list_head->next_desc_addr);
218 set_dma_config(CH_PPI, fbdev->descriptor_list_head->cfg);
219
220 return 1;
221}
222
223static void bfin_disable_dma(void)
224{
225 bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
226}
227
228static void bfin_config_ppi(struct adv7393fb_device *fbdev)
229{
230 if (ANOMALY_05000183) {
231 bfin_write_TIMER2_CONFIG(WDTH_CAP);
232 bfin_write_TIMER_ENABLE(TIMEN2);
233 }
234
235 bfin_write_PPI_CONTROL(0x381E);
236 bfin_write_PPI_FRAME(fbdev->modes[mode].tot_lines);
237 bfin_write_PPI_COUNT(fbdev->modes[mode].xres +
238 fbdev->modes[mode].boeft_blank - 1);
239 bfin_write_PPI_DELAY(fbdev->modes[mode].aoeft_blank - 1);
240}
241
242static void bfin_enable_ppi(void)
243{
244 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
245}
246
247static void bfin_disable_ppi(void)
248{
249 bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
250}
251
252static inline int adv7393_write(struct i2c_client *client, u8 reg, u8 value)
253{
254 return i2c_smbus_write_byte_data(client, reg, value);
255}
256
257static inline int adv7393_read(struct i2c_client *client, u8 reg)
258{
259 return i2c_smbus_read_byte_data(client, reg);
260}
261
262static int
263adv7393_write_block(struct i2c_client *client,
264 const u8 *data, unsigned int len)
265{
266 int ret = -1;
267 u8 reg;
268
269 while (len >= 2) {
270 reg = *data++;
271 ret = adv7393_write(client, reg, *data++);
272 if (ret < 0)
273 break;
274 len -= 2;
275 }
276
277 return ret;
278}
279
280static int adv7393_mode(struct i2c_client *client, u16 mode)
281{
282 switch (mode) {
283 case POWER_ON: /* ADV7393 Sleep mode OFF */
284 adv7393_write(client, 0x00, 0x1E);
285 break;
286 case POWER_DOWN: /* ADV7393 Sleep mode ON */
287 adv7393_write(client, 0x00, 0x1F);
288 break;
289 case BLANK_OFF: /* Pixel Data Valid */
290 adv7393_write(client, 0x82, 0xCB);
291 break;
292 case BLANK_ON: /* Pixel Data Invalid */
293 adv7393_write(client, 0x82, 0x8B);
294 break;
295 default:
296 return -EINVAL;
297 break;
298 }
299 return 0;
300}
301
302static irqreturn_t ppi_irq_error(int irq, void *dev_id)
303{
304
305 struct adv7393fb_device *fbdev = (struct adv7393fb_device *)dev_id;
306
307 u16 status = bfin_read_PPI_STATUS();
308
309 pr_debug("%s: PPI Status = 0x%X\n", __func__, status);
310
311 if (status) {
312 bfin_disable_dma(); /* TODO: Check Sequence */
313 bfin_disable_ppi();
314 bfin_clear_PPI_STATUS();
315 bfin_config_dma(fbdev);
316 bfin_enable_ppi();
317 }
318
319 return IRQ_HANDLED;
320
321}
322
323static int proc_output(char *buf)
324{
325 char *p = buf;
326
327 p += sprintf(p,
328 "Usage:\n"
329 "echo 0x[REG][Value] > adv7393\n"
330 "example: echo 0x1234 >adv7393\n"
331 "writes 0x34 into Register 0x12\n");
332
333 return p - buf;
334}
335
336static int
337adv7393_read_proc(char *page, char **start, off_t off,
338 int count, int *eof, void *data)
339{
340 int len;
341
342 len = proc_output(page);
343 if (len <= off + count)
344 *eof = 1;
345 *start = page + off;
346 len -= off;
347 if (len > count)
348 len = count;
349 if (len < 0)
350 len = 0;
351 return len;
352}
353
354static int
355adv7393_write_proc(struct file *file, const char __user * buffer,
356 unsigned long count, void *data)
357{
358 struct adv7393fb_device *fbdev = data;
359 char line[8];
360 unsigned int val;
361 int ret;
362
363 ret = copy_from_user(line, buffer, count);
364 if (ret)
365 return -EFAULT;
366
367 val = simple_strtoul(line, NULL, 0);
368 adv7393_write(fbdev->client, val >> 8, val & 0xff);
369
370 return count;
371}
372
373static int __devinit 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 int num_modes = ARRAY_SIZE(known_modes);
379
380 struct adv7393fb_device *fbdev = NULL;
381
382 if (mem > 2) {
383 dev_err(&client->dev, "mem out of allowed range [1;2]\n");
384 return -EINVAL;
385 }
386
387 if (mode > num_modes) {
388 dev_err(&client->dev, "mode %d: not supported", mode);
389 return -EFAULT;
390 }
391
392 fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
393 if (!fbdev) {
394 dev_err(&client->dev, "failed to allocate device private record");
395 return -ENOMEM;
396 }
397
398 i2c_set_clientdata(client, fbdev);
399
400 fbdev->modes = known_modes;
401 fbdev->client = client;
402
403 fbdev->fb_len =
404 mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
405 (fbdev->modes[mode].bpp / 8);
406
407 fbdev->line_len =
408 fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
409
410 /* Workaround "PPI Does Not Start Properly In Specific Mode" */
411 if (ANOMALY_05000400) {
Jingoo Hanf8bd4932012-01-26 19:32:34 +0900412 ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW,
413 "PPI0_FS3")
414 if (ret) {
Michael Hennerichcffd9342010-11-24 09:33:59 +0000415 dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
416 ret = -EBUSY;
417 goto out_8;
418 }
Michael Hennerichcffd9342010-11-24 09:33:59 +0000419 }
420
421 if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
422 dev_err(&client->dev, "requesting PPI peripheral failed\n");
423 ret = -EFAULT;
424 goto out_8;
425 }
426
427 fbdev->fb_mem =
428 dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
429 GFP_KERNEL);
430
431 if (NULL == fbdev->fb_mem) {
432 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
433 (u32) fbdev->fb_len);
434 ret = -ENOMEM;
435 goto out_7;
436 }
437
438 fbdev->info.screen_base = (void *)fbdev->fb_mem;
439 bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
440
441 bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
442 bfin_adv7393_fb_fix.line_length = fbdev->line_len;
443
444 if (mem > 1)
445 bfin_adv7393_fb_fix.ypanstep = 1;
446
447 bfin_adv7393_fb_defined.red.length = 5;
448 bfin_adv7393_fb_defined.green.length = 6;
449 bfin_adv7393_fb_defined.blue.length = 5;
450
451 bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
452 bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
453 bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
454 bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
455 bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
456
457 fbdev->info.fbops = &bfin_adv7393_fb_ops;
458 fbdev->info.var = bfin_adv7393_fb_defined;
459 fbdev->info.fix = bfin_adv7393_fb_fix;
460 fbdev->info.par = &bfin_par;
461 fbdev->info.flags = FBINFO_DEFAULT;
462
463 fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
464 if (!fbdev->info.pseudo_palette) {
465 dev_err(&client->dev, "failed to allocate pseudo_palette\n");
466 ret = -ENOMEM;
467 goto out_6;
468 }
469
470 if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
471 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
472 BFIN_LCD_NBR_PALETTE_ENTRIES);
473 ret = -EFAULT;
474 goto out_5;
475 }
476
477 if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
478 dev_err(&client->dev, "unable to request PPI DMA\n");
479 ret = -EFAULT;
480 goto out_4;
481 }
482
Yong Zhangf8798cc2011-09-22 16:59:16 +0800483 if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
Michael Hennerichcffd9342010-11-24 09:33:59 +0000484 "PPI ERROR", fbdev) < 0) {
485 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
486 ret = -EFAULT;
487 goto out_3;
488 }
489
490 fbdev->open = 0;
491
492 ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
493 fbdev->modes[mode].adv7393_i2c_initd_len);
494
495 if (ret) {
496 dev_err(&client->dev, "i2c attach: init error\n");
497 goto out_1;
498 }
499
500
501 if (register_framebuffer(&fbdev->info) < 0) {
502 dev_err(&client->dev, "unable to register framebuffer\n");
503 ret = -EFAULT;
504 goto out_1;
505 }
506
507 dev_info(&client->dev, "fb%d: %s frame buffer device\n",
508 fbdev->info.node, fbdev->info.fix.id);
509 dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
510
511 entry = create_proc_entry("driver/adv7393", 0, NULL);
512 if (!entry) {
513 dev_err(&client->dev, "unable to create /proc entry\n");
514 ret = -EFAULT;
515 goto out_0;
516 }
517
518 entry->read_proc = adv7393_read_proc;
519 entry->write_proc = adv7393_write_proc;
520 entry->data = fbdev;
521
522 return 0;
523
524 out_0:
525 unregister_framebuffer(&fbdev->info);
526 out_1:
527 free_irq(IRQ_PPI_ERROR, fbdev);
528 out_3:
529 free_dma(CH_PPI);
530 out_4:
531 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
532 fbdev->dma_handle);
533 out_5:
534 fb_dealloc_cmap(&fbdev->info.cmap);
535 out_6:
536 kfree(fbdev->info.pseudo_palette);
537 out_7:
538 peripheral_free_list(ppi_pins);
539 out_8:
540 kfree(fbdev);
541
542 return ret;
543}
544
545static int bfin_adv7393_fb_open(struct fb_info *info, int user)
546{
547 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
548
549 fbdev->info.screen_base = (void *)fbdev->fb_mem;
550 if (!fbdev->info.screen_base) {
551 dev_err(&fbdev->client->dev, "unable to map device\n");
552 return -ENOMEM;
553 }
554
555 fbdev->open = 1;
556 dma_desc_list(fbdev, BUILD);
557 adv7393_mode(fbdev->client, BLANK_OFF);
558 bfin_config_ppi(fbdev);
559 bfin_config_dma(fbdev);
560 bfin_enable_ppi();
561
562 return 0;
563}
564
565static int bfin_adv7393_fb_release(struct fb_info *info, int user)
566{
567 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
568
569 adv7393_mode(fbdev->client, BLANK_ON);
570 bfin_disable_dma();
571 bfin_disable_ppi();
572 dma_desc_list(fbdev, DESTRUCT);
573 fbdev->open = 0;
574 return 0;
575}
576
577static int
578bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
579{
580
581 switch (var->bits_per_pixel) {
582 case 16:/* DIRECTCOLOUR, 64k */
583 var->red.offset = info->var.red.offset;
584 var->green.offset = info->var.green.offset;
585 var->blue.offset = info->var.blue.offset;
586 var->red.length = info->var.red.length;
587 var->green.length = info->var.green.length;
588 var->blue.length = info->var.blue.length;
589 var->transp.offset = 0;
590 var->transp.length = 0;
591 var->transp.msb_right = 0;
592 var->red.msb_right = 0;
593 var->green.msb_right = 0;
594 var->blue.msb_right = 0;
595 break;
596 default:
597 pr_debug("%s: depth not supported: %u BPP\n", __func__,
598 var->bits_per_pixel);
599 return -EINVAL;
600 }
601
602 if (info->var.xres != var->xres ||
603 info->var.yres != var->yres ||
604 info->var.xres_virtual != var->xres_virtual ||
605 info->var.yres_virtual != var->yres_virtual) {
606 pr_debug("%s: Resolution not supported: X%u x Y%u\n",
607 __func__, var->xres, var->yres);
608 return -EINVAL;
609 }
610
611 /*
612 * Memory limit
613 */
614
615 if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
616 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
617 __func__, var->yres_virtual);
618 return -ENOMEM;
619 }
620
621 return 0;
622}
623
624static int
625bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
626{
627 int dy;
628 u32 dmaaddr;
629 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
630
631 if (!var || !info)
632 return -EINVAL;
633
634 if (var->xoffset - info->var.xoffset) {
635 /* No support for X panning for now! */
636 return -EINVAL;
637 }
638 dy = var->yoffset - info->var.yoffset;
639
640 if (dy) {
641 pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
642
643 dmaaddr = fbdev->av1->start_addr;
644 dmaaddr += (info->fix.line_length * dy);
645 /* TODO: Wait for current frame to finished */
646
647 fbdev->av1->start_addr = (unsigned long)dmaaddr;
648 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
649 }
650
651 return 0;
652
653}
654
655/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
656static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
657{
658 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
659
660 switch (blank) {
661
662 case VESA_NO_BLANKING:
663 /* Turn on panel */
664 adv7393_mode(fbdev->client, BLANK_OFF);
665 break;
666
667 case VESA_VSYNC_SUSPEND:
668 case VESA_HSYNC_SUSPEND:
669 case VESA_POWERDOWN:
670 /* Turn off panel */
671 adv7393_mode(fbdev->client, BLANK_ON);
672 break;
673
674 default:
675 return -EINVAL;
676 break;
677 }
678 return 0;
679}
680
681int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
682{
683 if (nocursor)
684 return 0;
685 else
686 return -EINVAL; /* just to force soft_cursor() call */
687}
688
689static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
690 u_int blue, u_int transp,
691 struct fb_info *info)
692{
693 if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
694 return -EINVAL;
695
696 if (info->var.grayscale)
697 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
698 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
699
700 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
701 u32 value;
702 /* Place color in the pseudopalette */
703 if (regno > 16)
704 return -EINVAL;
705
706 red >>= (16 - info->var.red.length);
707 green >>= (16 - info->var.green.length);
708 blue >>= (16 - info->var.blue.length);
709
710 value = (red << info->var.red.offset) |
711 (green << info->var.green.offset)|
712 (blue << info->var.blue.offset);
713 value &= 0xFFFF;
714
715 ((u32 *) (info->pseudo_palette))[regno] = value;
716 }
717
718 return 0;
719}
720
721static int __devexit bfin_adv7393_fb_remove(struct i2c_client *client)
722{
723 struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
724
725 adv7393_mode(client, POWER_DOWN);
726
727 if (fbdev->fb_mem)
728 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
729 free_dma(CH_PPI);
730 free_irq(IRQ_PPI_ERROR, fbdev);
731 unregister_framebuffer(&fbdev->info);
732 remove_proc_entry("driver/adv7393", NULL);
733 fb_dealloc_cmap(&fbdev->info.cmap);
734 kfree(fbdev->info.pseudo_palette);
735
736 if (ANOMALY_05000400)
737 gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
738 peripheral_free_list(ppi_pins);
739 kfree(fbdev);
740
741 return 0;
742}
743
744#ifdef CONFIG_PM
745static int bfin_adv7393_fb_suspend(struct device *dev)
746{
747 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
748
749 if (fbdev->open) {
750 bfin_disable_dma();
751 bfin_disable_ppi();
752 dma_desc_list(fbdev, DESTRUCT);
753 }
754 adv7393_mode(fbdev->client, POWER_DOWN);
755
756 return 0;
757}
758
759static int bfin_adv7393_fb_resume(struct device *dev)
760{
761 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
762
763 adv7393_mode(fbdev->client, POWER_ON);
764
765 if (fbdev->open) {
766 dma_desc_list(fbdev, BUILD);
767 bfin_config_ppi(fbdev);
768 bfin_config_dma(fbdev);
769 bfin_enable_ppi();
770 }
771
772 return 0;
773}
774
775static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
776 .suspend = bfin_adv7393_fb_suspend,
777 .resume = bfin_adv7393_fb_resume,
778};
779#endif
780
781static const struct i2c_device_id bfin_adv7393_id[] = {
782 {DRIVER_NAME, 0},
783 {}
784};
785
786MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
787
788static struct i2c_driver bfin_adv7393_fb_driver = {
789 .driver = {
790 .name = DRIVER_NAME,
791#ifdef CONFIG_PM
792 .pm = &bfin_adv7393_dev_pm_ops,
793#endif
794 },
795 .probe = bfin_adv7393_fb_probe,
796 .remove = __devexit_p(bfin_adv7393_fb_remove),
797 .id_table = bfin_adv7393_id,
798};
799
800static int __init bfin_adv7393_fb_driver_init(void)
801{
802#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
803 request_module("i2c-bfin-twi");
804#else
805 request_module("i2c-gpio");
806#endif
807
808 return i2c_add_driver(&bfin_adv7393_fb_driver);
809}
810module_init(bfin_adv7393_fb_driver_init);
811
812static void __exit bfin_adv7393_fb_driver_cleanup(void)
813{
814 i2c_del_driver(&bfin_adv7393_fb_driver);
815}
816module_exit(bfin_adv7393_fb_driver_cleanup);
817
818MODULE_LICENSE("GPL");
819MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
820MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
821
822module_param(mode, int, 0);
823MODULE_PARM_DESC(mode,
824 "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
825
826module_param(mem, int, 0);
827MODULE_PARM_DESC(mem,
828 "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
829
830module_param(nocursor, int, 0644);
831MODULE_PARM_DESC(nocursor, "cursor enable/disable");