fbdev: bfin_adv7393fb: new Blackfin ADV7393 driver
[~shefty/rdma-dev.git] / drivers / video / bfin_adv7393fb.c
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
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
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
225 static void bfin_disable_dma(void)
226 {
227         bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
228 }
229
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
244 static void bfin_enable_ppi(void)
245 {
246         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
247 }
248
249 static void bfin_disable_ppi(void)
250 {
251         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
252 }
253
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
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
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
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
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
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
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
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
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, IRQF_DISABLED,
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
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
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
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
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 */
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
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
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
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
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
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
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
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");