blob: c99281429214709b75d1804bcd0da532c26811ca [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>
39
40#include <linux/i2c.h>
41#include <linux/i2c-dev.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 * card parameters
60 */
61
62static 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
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 __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
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) { /* 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
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: /* 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
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(); /* 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
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 int
339adv7393_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
356static int
357adv7393_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
375static 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) {
Jingoo Hanf8bd4932012-01-26 19:32:34 +0900414 ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW,
415 "PPI0_FS3")
416 if (ret) {
Michael Hennerichcffd9342010-11-24 09:33:59 +0000417 dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
418 ret = -EBUSY;
419 goto out_8;
420 }
Michael Hennerichcffd9342010-11-24 09:33:59 +0000421 }
422
423 if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
424 dev_err(&client->dev, "requesting PPI peripheral failed\n");
425 ret = -EFAULT;
426 goto out_8;
427 }
428
429 fbdev->fb_mem =
430 dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
431 GFP_KERNEL);
432
433 if (NULL == fbdev->fb_mem) {
434 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
435 (u32) fbdev->fb_len);
436 ret = -ENOMEM;
437 goto out_7;
438 }
439
440 fbdev->info.screen_base = (void *)fbdev->fb_mem;
441 bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
442
443 bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
444 bfin_adv7393_fb_fix.line_length = fbdev->line_len;
445
446 if (mem > 1)
447 bfin_adv7393_fb_fix.ypanstep = 1;
448
449 bfin_adv7393_fb_defined.red.length = 5;
450 bfin_adv7393_fb_defined.green.length = 6;
451 bfin_adv7393_fb_defined.blue.length = 5;
452
453 bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
454 bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
455 bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
456 bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
457 bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
458
459 fbdev->info.fbops = &bfin_adv7393_fb_ops;
460 fbdev->info.var = bfin_adv7393_fb_defined;
461 fbdev->info.fix = bfin_adv7393_fb_fix;
462 fbdev->info.par = &bfin_par;
463 fbdev->info.flags = FBINFO_DEFAULT;
464
465 fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
466 if (!fbdev->info.pseudo_palette) {
467 dev_err(&client->dev, "failed to allocate pseudo_palette\n");
468 ret = -ENOMEM;
469 goto out_6;
470 }
471
472 if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
473 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
474 BFIN_LCD_NBR_PALETTE_ENTRIES);
475 ret = -EFAULT;
476 goto out_5;
477 }
478
479 if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
480 dev_err(&client->dev, "unable to request PPI DMA\n");
481 ret = -EFAULT;
482 goto out_4;
483 }
484
Yong Zhangf8798cc2011-09-22 16:59:16 +0800485 if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
Michael Hennerichcffd9342010-11-24 09:33:59 +0000486 "PPI ERROR", fbdev) < 0) {
487 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
488 ret = -EFAULT;
489 goto out_3;
490 }
491
492 fbdev->open = 0;
493
494 ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
495 fbdev->modes[mode].adv7393_i2c_initd_len);
496
497 if (ret) {
498 dev_err(&client->dev, "i2c attach: init error\n");
499 goto out_1;
500 }
501
502
503 if (register_framebuffer(&fbdev->info) < 0) {
504 dev_err(&client->dev, "unable to register framebuffer\n");
505 ret = -EFAULT;
506 goto out_1;
507 }
508
509 dev_info(&client->dev, "fb%d: %s frame buffer device\n",
510 fbdev->info.node, fbdev->info.fix.id);
511 dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
512
513 entry = create_proc_entry("driver/adv7393", 0, NULL);
514 if (!entry) {
515 dev_err(&client->dev, "unable to create /proc entry\n");
516 ret = -EFAULT;
517 goto out_0;
518 }
519
520 entry->read_proc = adv7393_read_proc;
521 entry->write_proc = adv7393_write_proc;
522 entry->data = fbdev;
523
524 return 0;
525
526 out_0:
527 unregister_framebuffer(&fbdev->info);
528 out_1:
529 free_irq(IRQ_PPI_ERROR, fbdev);
530 out_3:
531 free_dma(CH_PPI);
532 out_4:
533 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
534 fbdev->dma_handle);
535 out_5:
536 fb_dealloc_cmap(&fbdev->info.cmap);
537 out_6:
538 kfree(fbdev->info.pseudo_palette);
539 out_7:
540 peripheral_free_list(ppi_pins);
541 out_8:
542 kfree(fbdev);
543
544 return ret;
545}
546
547static int bfin_adv7393_fb_open(struct fb_info *info, int user)
548{
549 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
550
551 fbdev->info.screen_base = (void *)fbdev->fb_mem;
552 if (!fbdev->info.screen_base) {
553 dev_err(&fbdev->client->dev, "unable to map device\n");
554 return -ENOMEM;
555 }
556
557 fbdev->open = 1;
558 dma_desc_list(fbdev, BUILD);
559 adv7393_mode(fbdev->client, BLANK_OFF);
560 bfin_config_ppi(fbdev);
561 bfin_config_dma(fbdev);
562 bfin_enable_ppi();
563
564 return 0;
565}
566
567static int bfin_adv7393_fb_release(struct fb_info *info, int user)
568{
569 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
570
571 adv7393_mode(fbdev->client, BLANK_ON);
572 bfin_disable_dma();
573 bfin_disable_ppi();
574 dma_desc_list(fbdev, DESTRUCT);
575 fbdev->open = 0;
576 return 0;
577}
578
579static int
580bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
581{
582
583 switch (var->bits_per_pixel) {
584 case 16:/* DIRECTCOLOUR, 64k */
585 var->red.offset = info->var.red.offset;
586 var->green.offset = info->var.green.offset;
587 var->blue.offset = info->var.blue.offset;
588 var->red.length = info->var.red.length;
589 var->green.length = info->var.green.length;
590 var->blue.length = info->var.blue.length;
591 var->transp.offset = 0;
592 var->transp.length = 0;
593 var->transp.msb_right = 0;
594 var->red.msb_right = 0;
595 var->green.msb_right = 0;
596 var->blue.msb_right = 0;
597 break;
598 default:
599 pr_debug("%s: depth not supported: %u BPP\n", __func__,
600 var->bits_per_pixel);
601 return -EINVAL;
602 }
603
604 if (info->var.xres != var->xres ||
605 info->var.yres != var->yres ||
606 info->var.xres_virtual != var->xres_virtual ||
607 info->var.yres_virtual != var->yres_virtual) {
608 pr_debug("%s: Resolution not supported: X%u x Y%u\n",
609 __func__, var->xres, var->yres);
610 return -EINVAL;
611 }
612
613 /*
614 * Memory limit
615 */
616
617 if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
618 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
619 __func__, var->yres_virtual);
620 return -ENOMEM;
621 }
622
623 return 0;
624}
625
626static int
627bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
628{
629 int dy;
630 u32 dmaaddr;
631 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
632
633 if (!var || !info)
634 return -EINVAL;
635
636 if (var->xoffset - info->var.xoffset) {
637 /* No support for X panning for now! */
638 return -EINVAL;
639 }
640 dy = var->yoffset - info->var.yoffset;
641
642 if (dy) {
643 pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
644
645 dmaaddr = fbdev->av1->start_addr;
646 dmaaddr += (info->fix.line_length * dy);
647 /* TODO: Wait for current frame to finished */
648
649 fbdev->av1->start_addr = (unsigned long)dmaaddr;
650 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
651 }
652
653 return 0;
654
655}
656
657/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
658static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
659{
660 struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
661
662 switch (blank) {
663
664 case VESA_NO_BLANKING:
665 /* Turn on panel */
666 adv7393_mode(fbdev->client, BLANK_OFF);
667 break;
668
669 case VESA_VSYNC_SUSPEND:
670 case VESA_HSYNC_SUSPEND:
671 case VESA_POWERDOWN:
672 /* Turn off panel */
673 adv7393_mode(fbdev->client, BLANK_ON);
674 break;
675
676 default:
677 return -EINVAL;
678 break;
679 }
680 return 0;
681}
682
683int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
684{
685 if (nocursor)
686 return 0;
687 else
688 return -EINVAL; /* just to force soft_cursor() call */
689}
690
691static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
692 u_int blue, u_int transp,
693 struct fb_info *info)
694{
695 if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
696 return -EINVAL;
697
698 if (info->var.grayscale)
699 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
700 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
701
702 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
703 u32 value;
704 /* Place color in the pseudopalette */
705 if (regno > 16)
706 return -EINVAL;
707
708 red >>= (16 - info->var.red.length);
709 green >>= (16 - info->var.green.length);
710 blue >>= (16 - info->var.blue.length);
711
712 value = (red << info->var.red.offset) |
713 (green << info->var.green.offset)|
714 (blue << info->var.blue.offset);
715 value &= 0xFFFF;
716
717 ((u32 *) (info->pseudo_palette))[regno] = value;
718 }
719
720 return 0;
721}
722
723static int __devexit bfin_adv7393_fb_remove(struct i2c_client *client)
724{
725 struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
726
727 adv7393_mode(client, POWER_DOWN);
728
729 if (fbdev->fb_mem)
730 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
731 free_dma(CH_PPI);
732 free_irq(IRQ_PPI_ERROR, fbdev);
733 unregister_framebuffer(&fbdev->info);
734 remove_proc_entry("driver/adv7393", NULL);
735 fb_dealloc_cmap(&fbdev->info.cmap);
736 kfree(fbdev->info.pseudo_palette);
737
738 if (ANOMALY_05000400)
739 gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
740 peripheral_free_list(ppi_pins);
741 kfree(fbdev);
742
743 return 0;
744}
745
746#ifdef CONFIG_PM
747static int bfin_adv7393_fb_suspend(struct device *dev)
748{
749 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
750
751 if (fbdev->open) {
752 bfin_disable_dma();
753 bfin_disable_ppi();
754 dma_desc_list(fbdev, DESTRUCT);
755 }
756 adv7393_mode(fbdev->client, POWER_DOWN);
757
758 return 0;
759}
760
761static int bfin_adv7393_fb_resume(struct device *dev)
762{
763 struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
764
765 adv7393_mode(fbdev->client, POWER_ON);
766
767 if (fbdev->open) {
768 dma_desc_list(fbdev, BUILD);
769 bfin_config_ppi(fbdev);
770 bfin_config_dma(fbdev);
771 bfin_enable_ppi();
772 }
773
774 return 0;
775}
776
777static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
778 .suspend = bfin_adv7393_fb_suspend,
779 .resume = bfin_adv7393_fb_resume,
780};
781#endif
782
783static const struct i2c_device_id bfin_adv7393_id[] = {
784 {DRIVER_NAME, 0},
785 {}
786};
787
788MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
789
790static struct i2c_driver bfin_adv7393_fb_driver = {
791 .driver = {
792 .name = DRIVER_NAME,
793#ifdef CONFIG_PM
794 .pm = &bfin_adv7393_dev_pm_ops,
795#endif
796 },
797 .probe = bfin_adv7393_fb_probe,
798 .remove = __devexit_p(bfin_adv7393_fb_remove),
799 .id_table = bfin_adv7393_id,
800};
801
802static int __init bfin_adv7393_fb_driver_init(void)
803{
804#if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
805 request_module("i2c-bfin-twi");
806#else
807 request_module("i2c-gpio");
808#endif
809
810 return i2c_add_driver(&bfin_adv7393_fb_driver);
811}
812module_init(bfin_adv7393_fb_driver_init);
813
814static void __exit bfin_adv7393_fb_driver_cleanup(void)
815{
816 i2c_del_driver(&bfin_adv7393_fb_driver);
817}
818module_exit(bfin_adv7393_fb_driver_cleanup);
819
820MODULE_LICENSE("GPL");
821MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
822MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
823
824module_param(mode, int, 0);
825MODULE_PARM_DESC(mode,
826 "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
827
828module_param(mem, int, 0);
829MODULE_PARM_DESC(mem,
830 "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
831
832module_param(nocursor, int, 0644);
833MODULE_PARM_DESC(nocursor, "cursor enable/disable");