bfin_adv7393: switch to proc_create_data()
[linux-3.10.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 #include <linux/i2c.h>
40
41 #include "bfin_adv7393fb.h"
42
43 static int mode = VMODE;
44 static int mem = VMEM;
45 static int nocursor = 1;
46
47 static 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
60 static struct bfin_adv7393_fb_par {
61         /* structure holding blackfin / adv7393 parameters 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
71 static 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
91 static struct fb_fix_screeninfo bfin_adv7393_fb_fix = {
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
102 static 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
116 static 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
198 error:
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
207 static 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
223 static void bfin_disable_dma(void)
224 {
225         bfin_write_DMA0_CONFIG(bfin_read_DMA0_CONFIG() & ~DMAEN);
226 }
227
228 static 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
242 static void bfin_enable_ppi(void)
243 {
244         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
245 }
246
247 static void bfin_disable_ppi(void)
248 {
249         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
250 }
251
252 static 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
257 static inline int adv7393_read(struct i2c_client *client, u8 reg)
258 {
259         return i2c_smbus_read_byte_data(client, reg);
260 }
261
262 static int
263 adv7393_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
280 static 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
302 static 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
323 static 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
336 static ssize_t
337 adv7393_read_proc(struct file *file, char __user *buf,
338                   size_t size, loff_t *ppos)
339 {
340         static const char message[] = "Usage:\n"
341                 "echo 0x[REG][Value] > adv7393\n"
342                 "example: echo 0x1234 >adv7393\n"
343                 "writes 0x34 into Register 0x12\n";
344         return simple_read_from_buffer(buf, size, ppos, message,
345                                         sizeof(message));
346 }
347
348 static ssize_t
349 adv7393_write_proc(struct file *file, const char __user * buffer,
350                    size_t count, loff_t *ppos)
351 {
352         struct adv7393fb_device *fbdev = PDE(file_inode(file))->data;
353         unsigned int val;
354         int ret;
355
356         ret = kstrtouint_from_user(buffer, count, 0, &val);
357         if (ret)
358                 return -EFAULT;
359
360         adv7393_write(fbdev->client, val >> 8, val & 0xff);
361
362         return count;
363 }
364
365 static const struct file_operations fops = {
366         .read = adv7393_read_proc,
367         .write = adv7393_write_proc,
368         .llseek = default_llseek,
369 };
370
371 static int bfin_adv7393_fb_probe(struct i2c_client *client,
372                                  const struct i2c_device_id *id)
373 {
374         int ret = 0;
375         struct proc_dir_entry *entry;
376         int num_modes = ARRAY_SIZE(known_modes);
377
378         struct adv7393fb_device *fbdev = NULL;
379
380         if (mem > 2) {
381                 dev_err(&client->dev, "mem out of allowed range [1;2]\n");
382                 return -EINVAL;
383         }
384
385         if (mode > num_modes) {
386                 dev_err(&client->dev, "mode %d: not supported", mode);
387                 return -EFAULT;
388         }
389
390         fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
391         if (!fbdev) {
392                 dev_err(&client->dev, "failed to allocate device private record");
393                 return -ENOMEM;
394         }
395
396         i2c_set_clientdata(client, fbdev);
397
398         fbdev->modes = known_modes;
399         fbdev->client = client;
400
401         fbdev->fb_len =
402             mem * fbdev->modes[mode].xres * fbdev->modes[mode].xres *
403             (fbdev->modes[mode].bpp / 8);
404
405         fbdev->line_len =
406             fbdev->modes[mode].xres * (fbdev->modes[mode].bpp / 8);
407
408         /* Workaround "PPI Does Not Start Properly In Specific Mode" */
409         if (ANOMALY_05000400) {
410                 ret = gpio_request_one(P_IDENT(P_PPI0_FS3), GPIOF_OUT_INIT_LOW,
411                                         "PPI0_FS3")
412                 if (ret) {
413                         dev_err(&client->dev, "PPI0_FS3 GPIO request failed\n");
414                         ret = -EBUSY;
415                         goto free_fbdev;
416                 }
417         }
418
419         if (peripheral_request_list(ppi_pins, DRIVER_NAME)) {
420                 dev_err(&client->dev, "requesting PPI peripheral failed\n");
421                 ret = -EFAULT;
422                 goto free_gpio;
423         }
424
425         fbdev->fb_mem =
426             dma_alloc_coherent(NULL, fbdev->fb_len, &fbdev->dma_handle,
427                                GFP_KERNEL);
428
429         if (NULL == fbdev->fb_mem) {
430                 dev_err(&client->dev, "couldn't allocate dma buffer (%d bytes)\n",
431                        (u32) fbdev->fb_len);
432                 ret = -ENOMEM;
433                 goto free_ppi_pins;
434         }
435
436         fbdev->info.screen_base = (void *)fbdev->fb_mem;
437         bfin_adv7393_fb_fix.smem_start = (int)fbdev->fb_mem;
438
439         bfin_adv7393_fb_fix.smem_len = fbdev->fb_len;
440         bfin_adv7393_fb_fix.line_length = fbdev->line_len;
441
442         if (mem > 1)
443                 bfin_adv7393_fb_fix.ypanstep = 1;
444
445         bfin_adv7393_fb_defined.red.length = 5;
446         bfin_adv7393_fb_defined.green.length = 6;
447         bfin_adv7393_fb_defined.blue.length = 5;
448
449         bfin_adv7393_fb_defined.xres = fbdev->modes[mode].xres;
450         bfin_adv7393_fb_defined.yres = fbdev->modes[mode].yres;
451         bfin_adv7393_fb_defined.xres_virtual = fbdev->modes[mode].xres;
452         bfin_adv7393_fb_defined.yres_virtual = mem * fbdev->modes[mode].yres;
453         bfin_adv7393_fb_defined.bits_per_pixel = fbdev->modes[mode].bpp;
454
455         fbdev->info.fbops = &bfin_adv7393_fb_ops;
456         fbdev->info.var = bfin_adv7393_fb_defined;
457         fbdev->info.fix = bfin_adv7393_fb_fix;
458         fbdev->info.par = &bfin_par;
459         fbdev->info.flags = FBINFO_DEFAULT;
460
461         fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
462         if (!fbdev->info.pseudo_palette) {
463                 dev_err(&client->dev, "failed to allocate pseudo_palette\n");
464                 ret = -ENOMEM;
465                 goto free_fb_mem;
466         }
467
468         if (fb_alloc_cmap(&fbdev->info.cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
469                 dev_err(&client->dev, "failed to allocate colormap (%d entries)\n",
470                            BFIN_LCD_NBR_PALETTE_ENTRIES);
471                 ret = -EFAULT;
472                 goto free_palette;
473         }
474
475         if (request_dma(CH_PPI, "BF5xx_PPI_DMA") < 0) {
476                 dev_err(&client->dev, "unable to request PPI DMA\n");
477                 ret = -EFAULT;
478                 goto free_cmap;
479         }
480
481         if (request_irq(IRQ_PPI_ERROR, ppi_irq_error, 0,
482                         "PPI ERROR", fbdev) < 0) {
483                 dev_err(&client->dev, "unable to request PPI ERROR IRQ\n");
484                 ret = -EFAULT;
485                 goto free_ch_ppi;
486         }
487
488         fbdev->open = 0;
489
490         ret = adv7393_write_block(client, fbdev->modes[mode].adv7393_i2c_initd,
491                                 fbdev->modes[mode].adv7393_i2c_initd_len);
492
493         if (ret) {
494                 dev_err(&client->dev, "i2c attach: init error\n");
495                 goto free_irq_ppi;
496         }
497
498
499         if (register_framebuffer(&fbdev->info) < 0) {
500                 dev_err(&client->dev, "unable to register framebuffer\n");
501                 ret = -EFAULT;
502                 goto free_irq_ppi;
503         }
504
505         dev_info(&client->dev, "fb%d: %s frame buffer device\n",
506                fbdev->info.node, fbdev->info.fix.id);
507         dev_info(&client->dev, "fb memory address : 0x%p\n", fbdev->fb_mem);
508
509         entry = proc_create_data("driver/adv7393", 0, NULL, &fops, fbdev);
510         if (!entry) {
511                 dev_err(&client->dev, "unable to create /proc entry\n");
512                 ret = -EFAULT;
513                 goto free_fb;
514         }
515         return 0;
516
517 free_fb:
518         unregister_framebuffer(&fbdev->info);
519 free_irq_ppi:
520         free_irq(IRQ_PPI_ERROR, fbdev);
521 free_ch_ppi:
522         free_dma(CH_PPI);
523 free_cmap:
524         fb_dealloc_cmap(&fbdev->info.cmap);
525 free_palette:
526         kfree(fbdev->info.pseudo_palette);
527 free_fb_mem:
528         dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem,
529                           fbdev->dma_handle);
530 free_ppi_pins:
531         peripheral_free_list(ppi_pins);
532 free_gpio:
533         if (ANOMALY_05000400)
534                 gpio_free(P_IDENT(P_PPI0_FS3));
535 free_fbdev:
536         kfree(fbdev);
537
538         return ret;
539 }
540
541 static int bfin_adv7393_fb_open(struct fb_info *info, int user)
542 {
543         struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
544
545         fbdev->info.screen_base = (void *)fbdev->fb_mem;
546         if (!fbdev->info.screen_base) {
547                 dev_err(&fbdev->client->dev, "unable to map device\n");
548                 return -ENOMEM;
549         }
550
551         fbdev->open = 1;
552         dma_desc_list(fbdev, BUILD);
553         adv7393_mode(fbdev->client, BLANK_OFF);
554         bfin_config_ppi(fbdev);
555         bfin_config_dma(fbdev);
556         bfin_enable_ppi();
557
558         return 0;
559 }
560
561 static int bfin_adv7393_fb_release(struct fb_info *info, int user)
562 {
563         struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
564
565         adv7393_mode(fbdev->client, BLANK_ON);
566         bfin_disable_dma();
567         bfin_disable_ppi();
568         dma_desc_list(fbdev, DESTRUCT);
569         fbdev->open = 0;
570         return 0;
571 }
572
573 static int
574 bfin_adv7393_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
575 {
576
577         switch (var->bits_per_pixel) {
578         case 16:/* DIRECTCOLOUR, 64k */
579                 var->red.offset = info->var.red.offset;
580                 var->green.offset = info->var.green.offset;
581                 var->blue.offset = info->var.blue.offset;
582                 var->red.length = info->var.red.length;
583                 var->green.length = info->var.green.length;
584                 var->blue.length = info->var.blue.length;
585                 var->transp.offset = 0;
586                 var->transp.length = 0;
587                 var->transp.msb_right = 0;
588                 var->red.msb_right = 0;
589                 var->green.msb_right = 0;
590                 var->blue.msb_right = 0;
591                 break;
592         default:
593                 pr_debug("%s: depth not supported: %u BPP\n", __func__,
594                          var->bits_per_pixel);
595                 return -EINVAL;
596         }
597
598         if (info->var.xres != var->xres ||
599             info->var.yres != var->yres ||
600             info->var.xres_virtual != var->xres_virtual ||
601             info->var.yres_virtual != var->yres_virtual) {
602                 pr_debug("%s: Resolution not supported: X%u x Y%u\n",
603                          __func__, var->xres, var->yres);
604                 return -EINVAL;
605         }
606
607         /*
608          *  Memory limit
609          */
610
611         if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
612                 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
613                          __func__, var->yres_virtual);
614                 return -ENOMEM;
615         }
616
617         return 0;
618 }
619
620 static int
621 bfin_adv7393_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
622 {
623         int dy;
624         u32 dmaaddr;
625         struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
626
627         if (!var || !info)
628                 return -EINVAL;
629
630         if (var->xoffset - info->var.xoffset) {
631                 /* No support for X panning for now! */
632                 return -EINVAL;
633         }
634         dy = var->yoffset - info->var.yoffset;
635
636         if (dy) {
637                 pr_debug("%s: Panning screen of %d lines\n", __func__, dy);
638
639                 dmaaddr = fbdev->av1->start_addr;
640                 dmaaddr += (info->fix.line_length * dy);
641                 /* TODO: Wait for current frame to finished */
642
643                 fbdev->av1->start_addr = (unsigned long)dmaaddr;
644                 fbdev->av2->start_addr = (unsigned long)dmaaddr + fbdev->line_len;
645         }
646
647         return 0;
648
649 }
650
651 /* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
652 static int bfin_adv7393_fb_blank(int blank, struct fb_info *info)
653 {
654         struct adv7393fb_device *fbdev = to_adv7393fb_device(info);
655
656         switch (blank) {
657
658         case VESA_NO_BLANKING:
659                 /* Turn on panel */
660                 adv7393_mode(fbdev->client, BLANK_OFF);
661                 break;
662
663         case VESA_VSYNC_SUSPEND:
664         case VESA_HSYNC_SUSPEND:
665         case VESA_POWERDOWN:
666                 /* Turn off panel */
667                 adv7393_mode(fbdev->client, BLANK_ON);
668                 break;
669
670         default:
671                 return -EINVAL;
672                 break;
673         }
674         return 0;
675 }
676
677 int bfin_adv7393_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
678 {
679         if (nocursor)
680                 return 0;
681         else
682                 return -EINVAL; /* just to force soft_cursor() call */
683 }
684
685 static int bfin_adv7393_fb_setcolreg(u_int regno, u_int red, u_int green,
686                                      u_int blue, u_int transp,
687                                      struct fb_info *info)
688 {
689         if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
690                 return -EINVAL;
691
692         if (info->var.grayscale)
693                 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
694                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
695
696         if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
697                 u32 value;
698                 /* Place color in the pseudopalette */
699                 if (regno > 16)
700                         return -EINVAL;
701
702                 red   >>= (16 - info->var.red.length);
703                 green >>= (16 - info->var.green.length);
704                 blue  >>= (16 - info->var.blue.length);
705
706                 value = (red   << info->var.red.offset) |
707                         (green << info->var.green.offset)|
708                         (blue  << info->var.blue.offset);
709                 value &= 0xFFFF;
710
711                 ((u32 *) (info->pseudo_palette))[regno] = value;
712         }
713
714         return 0;
715 }
716
717 static int bfin_adv7393_fb_remove(struct i2c_client *client)
718 {
719         struct adv7393fb_device *fbdev = i2c_get_clientdata(client);
720
721         adv7393_mode(client, POWER_DOWN);
722
723         if (fbdev->fb_mem)
724                 dma_free_coherent(NULL, fbdev->fb_len, fbdev->fb_mem, fbdev->dma_handle);
725         free_dma(CH_PPI);
726         free_irq(IRQ_PPI_ERROR, fbdev);
727         unregister_framebuffer(&fbdev->info);
728         remove_proc_entry("driver/adv7393", NULL);
729         fb_dealloc_cmap(&fbdev->info.cmap);
730         kfree(fbdev->info.pseudo_palette);
731
732         if (ANOMALY_05000400)
733                 gpio_free(P_IDENT(P_PPI0_FS3)); /* FS3 */
734         peripheral_free_list(ppi_pins);
735         kfree(fbdev);
736
737         return 0;
738 }
739
740 #ifdef CONFIG_PM
741 static int bfin_adv7393_fb_suspend(struct device *dev)
742 {
743         struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
744
745         if (fbdev->open) {
746                 bfin_disable_dma();
747                 bfin_disable_ppi();
748                 dma_desc_list(fbdev, DESTRUCT);
749         }
750         adv7393_mode(fbdev->client, POWER_DOWN);
751
752         return 0;
753 }
754
755 static int bfin_adv7393_fb_resume(struct device *dev)
756 {
757         struct adv7393fb_device *fbdev = dev_get_drvdata(dev);
758
759         adv7393_mode(fbdev->client, POWER_ON);
760
761         if (fbdev->open) {
762                 dma_desc_list(fbdev, BUILD);
763                 bfin_config_ppi(fbdev);
764                 bfin_config_dma(fbdev);
765                 bfin_enable_ppi();
766         }
767
768         return 0;
769 }
770
771 static const struct dev_pm_ops bfin_adv7393_dev_pm_ops = {
772         .suspend = bfin_adv7393_fb_suspend,
773         .resume  = bfin_adv7393_fb_resume,
774 };
775 #endif
776
777 static const struct i2c_device_id bfin_adv7393_id[] = {
778         {DRIVER_NAME, 0},
779         {}
780 };
781
782 MODULE_DEVICE_TABLE(i2c, bfin_adv7393_id);
783
784 static struct i2c_driver bfin_adv7393_fb_driver = {
785         .driver = {
786                 .name = DRIVER_NAME,
787 #ifdef CONFIG_PM
788                 .pm   = &bfin_adv7393_dev_pm_ops,
789 #endif
790         },
791         .probe = bfin_adv7393_fb_probe,
792         .remove = bfin_adv7393_fb_remove,
793         .id_table = bfin_adv7393_id,
794 };
795
796 static int __init bfin_adv7393_fb_driver_init(void)
797 {
798 #if  defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE)
799         request_module("i2c-bfin-twi");
800 #else
801         request_module("i2c-gpio");
802 #endif
803
804         return i2c_add_driver(&bfin_adv7393_fb_driver);
805 }
806 module_init(bfin_adv7393_fb_driver_init);
807
808 static void __exit bfin_adv7393_fb_driver_cleanup(void)
809 {
810         i2c_del_driver(&bfin_adv7393_fb_driver);
811 }
812 module_exit(bfin_adv7393_fb_driver_cleanup);
813
814 MODULE_LICENSE("GPL");
815 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
816 MODULE_DESCRIPTION("Frame buffer driver for ADV7393/2 Video Encoder");
817
818 module_param(mode, int, 0);
819 MODULE_PARM_DESC(mode,
820         "Video Mode (0=NTSC,1=PAL,2=NTSC 640x480,3=PAL 640x480,4=NTSC YCbCr input,5=PAL YCbCr input)");
821
822 module_param(mem, int, 0);
823 MODULE_PARM_DESC(mem,
824         "Size of frame buffer memory 1=Single 2=Double Size (allows y-panning / frame stacking)");
825
826 module_param(nocursor, int, 0644);
827 MODULE_PARM_DESC(nocursor, "cursor enable/disable");