i2c: tegra: Add stub runtime power management
[linux-2.6.git] / drivers / video / bfin-t350mcqb-fb.c
1 /*
2  * File:         drivers/video/bfin-t350mcqb-fb.c
3  * Based on:
4  * Author:       Michael Hennerich <hennerich@blackfin.uclinux.org>
5  *
6  * Created:
7  * Description:  Blackfin LCD Framebufer driver
8  *
9  *
10  * Modified:
11  *               Copyright 2004-2007 Analog Devices Inc.
12  *
13  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
14  *
15  * This program is free software; you can redistribute it and/or modify
16  * it under the terms of the GNU General Public License as published by
17  * the Free Software Foundation; either version 2 of the License, or
18  * (at your option) any later version.
19  *
20  * This program is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  * GNU General Public License for more details.
24  *
25  * You should have received a copy of the GNU General Public License
26  * along with this program; if not, see the file COPYING, or write
27  * to the Free Software Foundation, Inc.,
28  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
29  */
30
31 #include <linux/module.h>
32 #include <linux/kernel.h>
33 #include <linux/errno.h>
34 #include <linux/string.h>
35 #include <linux/gfp.h>
36 #include <linux/fb.h>
37 #include <linux/init.h>
38 #include <linux/types.h>
39 #include <linux/interrupt.h>
40 #include <linux/device.h>
41 #include <linux/backlight.h>
42 #include <linux/lcd.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/platform_device.h>
45
46 #include <asm/blackfin.h>
47 #include <asm/irq.h>
48 #include <asm/dma-mapping.h>
49 #include <asm/dma.h>
50 #include <asm/portmux.h>
51 #include <asm/gptimers.h>
52
53 #define NO_BL_SUPPORT
54
55 #define LCD_X_RES               320     /* Horizontal Resolution */
56 #define LCD_Y_RES               240     /* Vertical Resolution */
57 #define LCD_BPP                 24      /* Bit Per Pixel */
58
59 #define DMA_BUS_SIZE            16
60 #define LCD_CLK                 (12*1000*1000)  /* 12MHz */
61
62 #define CLOCKS_PER_PIX          3
63
64         /*
65          * HS and VS timing parameters (all in number of PPI clk ticks)
66          */
67
68 #define U_LINE          1                               /* Blanking Lines */
69
70 #define H_ACTPIX        (LCD_X_RES * CLOCKS_PER_PIX)    /* active horizontal pixel */
71 #define H_PERIOD        (408 * CLOCKS_PER_PIX)          /* HS period */
72 #define H_PULSE         90                              /* HS pulse width */
73 #define H_START         204                             /* first valid pixel */
74
75 #define V_LINES         (LCD_Y_RES + U_LINE)            /* total vertical lines */
76 #define V_PULSE         (3 * H_PERIOD)                  /* VS pulse width (1-5 H_PERIODs) */
77 #define V_PERIOD        (H_PERIOD * V_LINES)            /* VS period */
78
79 #define ACTIVE_VIDEO_MEM_OFFSET (U_LINE * H_ACTPIX)
80
81 #define BFIN_LCD_NBR_PALETTE_ENTRIES    256
82
83 #define DRIVER_NAME "bfin-t350mcqb"
84 static char driver_name[] = DRIVER_NAME;
85
86 struct bfin_t350mcqbfb_info {
87         struct fb_info *fb;
88         struct device *dev;
89         unsigned char *fb_buffer;       /* RGB Buffer */
90         dma_addr_t dma_handle;
91         int lq043_open_cnt;
92         int irq;
93         spinlock_t lock;        /* lock */
94         u32 pseudo_pal[16];
95 };
96
97 static int nocursor;
98 module_param(nocursor, int, 0644);
99 MODULE_PARM_DESC(nocursor, "cursor enable/disable");
100
101 #define PPI_TX_MODE             0x2
102 #define PPI_XFER_TYPE_11        0xC
103 #define PPI_PORT_CFG_01         0x10
104 #define PPI_PACK_EN             0x80
105 #define PPI_POLS_1              0x8000
106
107 static void bfin_t350mcqb_config_ppi(struct bfin_t350mcqbfb_info *fbi)
108 {
109         bfin_write_PPI_DELAY(H_START);
110         bfin_write_PPI_COUNT(H_ACTPIX-1);
111         bfin_write_PPI_FRAME(V_LINES);
112
113         bfin_write_PPI_CONTROL(PPI_TX_MODE |       /* output mode , PORT_DIR */
114                                 PPI_XFER_TYPE_11 | /* sync mode XFR_TYPE */
115                                 PPI_PORT_CFG_01 |  /* two frame sync PORT_CFG */
116                                 PPI_PACK_EN |      /* packing enabled PACK_EN */
117                                 PPI_POLS_1);       /* faling edge syncs POLS */
118 }
119
120 static inline void bfin_t350mcqb_disable_ppi(void)
121 {
122         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & ~PORT_EN);
123 }
124
125 static inline void bfin_t350mcqb_enable_ppi(void)
126 {
127         bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
128 }
129
130 static void bfin_t350mcqb_start_timers(void)
131 {
132         unsigned long flags;
133
134         local_irq_save(flags);
135                 enable_gptimers(TIMER1bit);
136                 enable_gptimers(TIMER0bit);
137         local_irq_restore(flags);
138 }
139
140 static void bfin_t350mcqb_stop_timers(void)
141 {
142         disable_gptimers(TIMER0bit | TIMER1bit);
143
144         set_gptimer_status(0, TIMER_STATUS_TRUN0 | TIMER_STATUS_TRUN1 |
145                                 TIMER_STATUS_TIMIL0 | TIMER_STATUS_TIMIL1 |
146                                  TIMER_STATUS_TOVF0 | TIMER_STATUS_TOVF1);
147
148 }
149
150 static void bfin_t350mcqb_init_timers(void)
151 {
152
153         bfin_t350mcqb_stop_timers();
154
155         set_gptimer_period(TIMER0_id, H_PERIOD);
156         set_gptimer_pwidth(TIMER0_id, H_PULSE);
157         set_gptimer_config(TIMER0_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT |
158                                       TIMER_TIN_SEL | TIMER_CLK_SEL|
159                                       TIMER_EMU_RUN);
160
161         set_gptimer_period(TIMER1_id, V_PERIOD);
162         set_gptimer_pwidth(TIMER1_id, V_PULSE);
163         set_gptimer_config(TIMER1_id, TIMER_MODE_PWM | TIMER_PERIOD_CNT |
164                                       TIMER_TIN_SEL | TIMER_CLK_SEL |
165                                       TIMER_EMU_RUN);
166
167 }
168
169 static void bfin_t350mcqb_config_dma(struct bfin_t350mcqbfb_info *fbi)
170 {
171
172         set_dma_config(CH_PPI,
173                        set_bfin_dma_config(DIR_READ, DMA_FLOW_AUTO,
174                                            INTR_DISABLE, DIMENSION_2D,
175                                            DATA_SIZE_16,
176                                            DMA_NOSYNC_KEEP_DMA_BUF));
177         set_dma_x_count(CH_PPI, (LCD_X_RES * LCD_BPP) / DMA_BUS_SIZE);
178         set_dma_x_modify(CH_PPI, DMA_BUS_SIZE / 8);
179         set_dma_y_count(CH_PPI, V_LINES);
180
181         set_dma_y_modify(CH_PPI, DMA_BUS_SIZE / 8);
182         set_dma_start_addr(CH_PPI, (unsigned long)fbi->fb_buffer);
183
184 }
185
186 static  u16 ppi0_req_8[] = {P_PPI0_CLK, P_PPI0_FS1, P_PPI0_FS2,
187                             P_PPI0_D0, P_PPI0_D1, P_PPI0_D2,
188                             P_PPI0_D3, P_PPI0_D4, P_PPI0_D5,
189                             P_PPI0_D6, P_PPI0_D7, 0};
190
191 static int bfin_t350mcqb_request_ports(int action)
192 {
193         if (action) {
194                 if (peripheral_request_list(ppi0_req_8, DRIVER_NAME)) {
195                         printk(KERN_ERR "Requesting Peripherals failed\n");
196                         return -EFAULT;
197                 }
198         } else
199                 peripheral_free_list(ppi0_req_8);
200
201         return 0;
202 }
203
204 static int bfin_t350mcqb_fb_open(struct fb_info *info, int user)
205 {
206         struct bfin_t350mcqbfb_info *fbi = info->par;
207
208         spin_lock(&fbi->lock);
209         fbi->lq043_open_cnt++;
210
211         if (fbi->lq043_open_cnt <= 1) {
212
213                 bfin_t350mcqb_disable_ppi();
214                 SSYNC();
215
216                 bfin_t350mcqb_config_dma(fbi);
217                 bfin_t350mcqb_config_ppi(fbi);
218                 bfin_t350mcqb_init_timers();
219
220                 /* start dma */
221                 enable_dma(CH_PPI);
222                 bfin_t350mcqb_enable_ppi();
223                 bfin_t350mcqb_start_timers();
224         }
225
226         spin_unlock(&fbi->lock);
227
228         return 0;
229 }
230
231 static int bfin_t350mcqb_fb_release(struct fb_info *info, int user)
232 {
233         struct bfin_t350mcqbfb_info *fbi = info->par;
234
235         spin_lock(&fbi->lock);
236
237         fbi->lq043_open_cnt--;
238
239         if (fbi->lq043_open_cnt <= 0) {
240                 bfin_t350mcqb_disable_ppi();
241                 SSYNC();
242                 disable_dma(CH_PPI);
243                 bfin_t350mcqb_stop_timers();
244         }
245
246         spin_unlock(&fbi->lock);
247
248         return 0;
249 }
250
251 static int bfin_t350mcqb_fb_check_var(struct fb_var_screeninfo *var,
252                                    struct fb_info *info)
253 {
254
255         switch (var->bits_per_pixel) {
256         case 24:/* TRUECOLOUR, 16m */
257                 var->red.offset = 0;
258                 var->green.offset = 8;
259                 var->blue.offset = 16;
260                 var->red.length = var->green.length = var->blue.length = 8;
261                 var->transp.offset = 0;
262                 var->transp.length = 0;
263                 var->transp.msb_right = 0;
264                 var->red.msb_right = 0;
265                 var->green.msb_right = 0;
266                 var->blue.msb_right = 0;
267                 break;
268         default:
269                 pr_debug("%s: depth not supported: %u BPP\n", __func__,
270                          var->bits_per_pixel);
271                 return -EINVAL;
272         }
273
274         if (info->var.xres != var->xres || info->var.yres != var->yres ||
275             info->var.xres_virtual != var->xres_virtual ||
276             info->var.yres_virtual != var->yres_virtual) {
277                 pr_debug("%s: Resolution not supported: X%u x Y%u \n",
278                          __func__, var->xres, var->yres);
279                 return -EINVAL;
280         }
281
282         /*
283          *  Memory limit
284          */
285
286         if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
287                 pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
288                          __func__, var->yres_virtual);
289                 return -ENOMEM;
290         }
291
292         return 0;
293 }
294
295 int bfin_t350mcqb_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
296 {
297         if (nocursor)
298                 return 0;
299         else
300                 return -EINVAL; /* just to force soft_cursor() call */
301 }
302
303 static int bfin_t350mcqb_fb_setcolreg(u_int regno, u_int red, u_int green,
304                                    u_int blue, u_int transp,
305                                    struct fb_info *info)
306 {
307         if (regno >= BFIN_LCD_NBR_PALETTE_ENTRIES)
308                 return -EINVAL;
309
310         if (info->var.grayscale) {
311                 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
312                 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
313         }
314
315         if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
316
317                 u32 value;
318                 /* Place color in the pseudopalette */
319                 if (regno > 16)
320                         return -EINVAL;
321
322                 red >>= (16 - info->var.red.length);
323                 green >>= (16 - info->var.green.length);
324                 blue >>= (16 - info->var.blue.length);
325
326                 value = (red << info->var.red.offset) |
327                     (green << info->var.green.offset) |
328                     (blue << info->var.blue.offset);
329                 value &= 0xFFFFFF;
330
331                 ((u32 *) (info->pseudo_palette))[regno] = value;
332
333         }
334
335         return 0;
336 }
337
338 static struct fb_ops bfin_t350mcqb_fb_ops = {
339         .owner = THIS_MODULE,
340         .fb_open = bfin_t350mcqb_fb_open,
341         .fb_release = bfin_t350mcqb_fb_release,
342         .fb_check_var = bfin_t350mcqb_fb_check_var,
343         .fb_fillrect = cfb_fillrect,
344         .fb_copyarea = cfb_copyarea,
345         .fb_imageblit = cfb_imageblit,
346         .fb_cursor = bfin_t350mcqb_fb_cursor,
347         .fb_setcolreg = bfin_t350mcqb_fb_setcolreg,
348 };
349
350 #ifndef NO_BL_SUPPORT
351 static int bl_get_brightness(struct backlight_device *bd)
352 {
353         return 0;
354 }
355
356 static const struct backlight_ops bfin_lq043fb_bl_ops = {
357         .get_brightness = bl_get_brightness,
358 };
359
360 static struct backlight_device *bl_dev;
361
362 static int bfin_lcd_get_power(struct lcd_device *dev)
363 {
364         return 0;
365 }
366
367 static int bfin_lcd_set_power(struct lcd_device *dev, int power)
368 {
369         return 0;
370 }
371
372 static int bfin_lcd_get_contrast(struct lcd_device *dev)
373 {
374         return 0;
375 }
376
377 static int bfin_lcd_set_contrast(struct lcd_device *dev, int contrast)
378 {
379
380         return 0;
381 }
382
383 static int bfin_lcd_check_fb(struct lcd_device *dev, struct fb_info *fi)
384 {
385         if (!fi || (fi == &bfin_t350mcqb_fb))
386                 return 1;
387         return 0;
388 }
389
390 static struct lcd_ops bfin_lcd_ops = {
391         .get_power = bfin_lcd_get_power,
392         .set_power = bfin_lcd_set_power,
393         .get_contrast = bfin_lcd_get_contrast,
394         .set_contrast = bfin_lcd_set_contrast,
395         .check_fb = bfin_lcd_check_fb,
396 };
397
398 static struct lcd_device *lcd_dev;
399 #endif
400
401 static irqreturn_t bfin_t350mcqb_irq_error(int irq, void *dev_id)
402 {
403         /*struct bfin_t350mcqbfb_info *info = (struct bfin_t350mcqbfb_info *)dev_id;*/
404
405         u16 status = bfin_read_PPI_STATUS();
406         bfin_write_PPI_STATUS(0xFFFF);
407
408         if (status) {
409                 bfin_t350mcqb_disable_ppi();
410                 disable_dma(CH_PPI);
411
412                 /* start dma */
413                 enable_dma(CH_PPI);
414                 bfin_t350mcqb_enable_ppi();
415                 bfin_write_PPI_STATUS(0xFFFF);
416         }
417
418         return IRQ_HANDLED;
419 }
420
421 static int __devinit bfin_t350mcqb_probe(struct platform_device *pdev)
422 {
423 #ifndef NO_BL_SUPPORT
424         struct backlight_properties props;
425 #endif
426         struct bfin_t350mcqbfb_info *info;
427         struct fb_info *fbinfo;
428         int ret;
429
430         printk(KERN_INFO DRIVER_NAME ": %dx%d %d-bit RGB FrameBuffer initializing...\n",
431                                          LCD_X_RES, LCD_Y_RES, LCD_BPP);
432
433         if (request_dma(CH_PPI, "CH_PPI") < 0) {
434                 printk(KERN_ERR DRIVER_NAME
435                        ": couldn't request CH_PPI DMA\n");
436                 ret = -EFAULT;
437                 goto out1;
438         }
439
440         fbinfo =
441             framebuffer_alloc(sizeof(struct bfin_t350mcqbfb_info), &pdev->dev);
442         if (!fbinfo) {
443                 ret = -ENOMEM;
444                 goto out2;
445         }
446
447         info = fbinfo->par;
448         info->fb = fbinfo;
449         info->dev = &pdev->dev;
450
451         platform_set_drvdata(pdev, fbinfo);
452
453         strcpy(fbinfo->fix.id, driver_name);
454
455         fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
456         fbinfo->fix.type_aux = 0;
457         fbinfo->fix.xpanstep = 0;
458         fbinfo->fix.ypanstep = 0;
459         fbinfo->fix.ywrapstep = 0;
460         fbinfo->fix.accel = FB_ACCEL_NONE;
461         fbinfo->fix.visual = FB_VISUAL_TRUECOLOR;
462
463         fbinfo->var.nonstd = 0;
464         fbinfo->var.activate = FB_ACTIVATE_NOW;
465         fbinfo->var.height = 53;
466         fbinfo->var.width = 70;
467         fbinfo->var.accel_flags = 0;
468         fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
469
470         fbinfo->var.xres = LCD_X_RES;
471         fbinfo->var.xres_virtual = LCD_X_RES;
472         fbinfo->var.yres = LCD_Y_RES;
473         fbinfo->var.yres_virtual = LCD_Y_RES;
474         fbinfo->var.bits_per_pixel = LCD_BPP;
475
476         fbinfo->var.red.offset = 0;
477         fbinfo->var.green.offset = 8;
478         fbinfo->var.blue.offset = 16;
479         fbinfo->var.transp.offset = 0;
480         fbinfo->var.red.length = 8;
481         fbinfo->var.green.length = 8;
482         fbinfo->var.blue.length = 8;
483         fbinfo->var.transp.length = 0;
484         fbinfo->fix.smem_len = LCD_X_RES * LCD_Y_RES * LCD_BPP / 8;
485
486         fbinfo->fix.line_length = fbinfo->var.xres_virtual *
487             fbinfo->var.bits_per_pixel / 8;
488
489
490         fbinfo->fbops = &bfin_t350mcqb_fb_ops;
491         fbinfo->flags = FBINFO_FLAG_DEFAULT;
492
493         info->fb_buffer = dma_alloc_coherent(NULL, fbinfo->fix.smem_len +
494                                 ACTIVE_VIDEO_MEM_OFFSET,
495                                 &info->dma_handle, GFP_KERNEL);
496
497         if (NULL == info->fb_buffer) {
498                 printk(KERN_ERR DRIVER_NAME
499                        ": couldn't allocate dma buffer.\n");
500                 ret = -ENOMEM;
501                 goto out3;
502         }
503
504         fbinfo->screen_base = (void *)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET;
505         fbinfo->fix.smem_start = (int)info->fb_buffer + ACTIVE_VIDEO_MEM_OFFSET;
506
507         fbinfo->fbops = &bfin_t350mcqb_fb_ops;
508
509         fbinfo->pseudo_palette = &info->pseudo_pal;
510
511         if (fb_alloc_cmap(&fbinfo->cmap, BFIN_LCD_NBR_PALETTE_ENTRIES, 0)
512             < 0) {
513                 printk(KERN_ERR DRIVER_NAME
514                        "Fail to allocate colormap (%d entries)\n",
515                        BFIN_LCD_NBR_PALETTE_ENTRIES);
516                 ret = -EFAULT;
517                 goto out4;
518         }
519
520         if (bfin_t350mcqb_request_ports(1)) {
521                 printk(KERN_ERR DRIVER_NAME ": couldn't request gpio port.\n");
522                 ret = -EFAULT;
523                 goto out6;
524         }
525
526         info->irq = platform_get_irq(pdev, 0);
527         if (info->irq < 0) {
528                 ret = -EINVAL;
529                 goto out7;
530         }
531
532         ret = request_irq(info->irq, bfin_t350mcqb_irq_error, IRQF_DISABLED,
533                         "PPI ERROR", info);
534         if (ret < 0) {
535                 printk(KERN_ERR DRIVER_NAME
536                        ": unable to request PPI ERROR IRQ\n");
537                 goto out7;
538         }
539
540         if (register_framebuffer(fbinfo) < 0) {
541                 printk(KERN_ERR DRIVER_NAME
542                        ": unable to register framebuffer.\n");
543                 ret = -EINVAL;
544                 goto out8;
545         }
546 #ifndef NO_BL_SUPPORT
547         memset(&props, 0, sizeof(struct backlight_properties));
548         props.type = BACKLIGHT_RAW;
549         props.max_brightness = 255;
550         bl_dev = backlight_device_register("bf52x-bl", NULL, NULL,
551                                            &bfin_lq043fb_bl_ops, &props);
552         if (IS_ERR(bl_dev)) {
553                 printk(KERN_ERR DRIVER_NAME
554                         ": unable to register backlight.\n");
555                 ret = -EINVAL;
556                 unregister_framebuffer(fbinfo);
557                 goto out8;
558         }
559
560         lcd_dev = lcd_device_register(DRIVER_NAME, NULL, &bfin_lcd_ops);
561         lcd_dev->props.max_contrast = 255, printk(KERN_INFO "Done.\n");
562 #endif
563
564         return 0;
565
566 out8:
567         free_irq(info->irq, info);
568 out7:
569         bfin_t350mcqb_request_ports(0);
570 out6:
571         fb_dealloc_cmap(&fbinfo->cmap);
572 out4:
573         dma_free_coherent(NULL, fbinfo->fix.smem_len + ACTIVE_VIDEO_MEM_OFFSET,
574                          info->fb_buffer, info->dma_handle);
575 out3:
576         framebuffer_release(fbinfo);
577 out2:
578         free_dma(CH_PPI);
579 out1:
580         platform_set_drvdata(pdev, NULL);
581
582         return ret;
583 }
584
585 static int __devexit bfin_t350mcqb_remove(struct platform_device *pdev)
586 {
587
588         struct fb_info *fbinfo = platform_get_drvdata(pdev);
589         struct bfin_t350mcqbfb_info *info = fbinfo->par;
590
591         unregister_framebuffer(fbinfo);
592
593         free_dma(CH_PPI);
594         free_irq(info->irq, info);
595
596         if (info->fb_buffer != NULL)
597                 dma_free_coherent(NULL, fbinfo->fix.smem_len +
598                         ACTIVE_VIDEO_MEM_OFFSET, info->fb_buffer,
599                         info->dma_handle);
600
601         fb_dealloc_cmap(&fbinfo->cmap);
602
603 #ifndef NO_BL_SUPPORT
604         lcd_device_unregister(lcd_dev);
605         backlight_device_unregister(bl_dev);
606 #endif
607
608         bfin_t350mcqb_request_ports(0);
609
610         platform_set_drvdata(pdev, NULL);
611         framebuffer_release(fbinfo);
612
613         printk(KERN_INFO DRIVER_NAME ": Unregister LCD driver.\n");
614
615         return 0;
616 }
617
618 #ifdef CONFIG_PM
619 static int bfin_t350mcqb_suspend(struct platform_device *pdev, pm_message_t state)
620 {
621         struct fb_info *fbinfo = platform_get_drvdata(pdev);
622         struct bfin_t350mcqbfb_info *fbi = fbinfo->par;
623
624         if (fbi->lq043_open_cnt) {
625                 bfin_t350mcqb_disable_ppi();
626                 disable_dma(CH_PPI);
627                 bfin_t350mcqb_stop_timers();
628                 bfin_write_PPI_STATUS(-1);
629         }
630
631
632         return 0;
633 }
634
635 static int bfin_t350mcqb_resume(struct platform_device *pdev)
636 {
637         struct fb_info *fbinfo = platform_get_drvdata(pdev);
638         struct bfin_t350mcqbfb_info *fbi = fbinfo->par;
639
640         if (fbi->lq043_open_cnt) {
641                 bfin_t350mcqb_config_dma(fbi);
642                 bfin_t350mcqb_config_ppi(fbi);
643                 bfin_t350mcqb_init_timers();
644
645                 /* start dma */
646                 enable_dma(CH_PPI);
647                 bfin_t350mcqb_enable_ppi();
648                 bfin_t350mcqb_start_timers();
649         }
650
651         return 0;
652 }
653 #else
654 #define bfin_t350mcqb_suspend   NULL
655 #define bfin_t350mcqb_resume    NULL
656 #endif
657
658 static struct platform_driver bfin_t350mcqb_driver = {
659         .probe = bfin_t350mcqb_probe,
660         .remove = __devexit_p(bfin_t350mcqb_remove),
661         .suspend = bfin_t350mcqb_suspend,
662         .resume = bfin_t350mcqb_resume,
663         .driver = {
664                    .name = DRIVER_NAME,
665                    .owner = THIS_MODULE,
666                    },
667 };
668
669 static int __init bfin_t350mcqb_driver_init(void)
670 {
671         return platform_driver_register(&bfin_t350mcqb_driver);
672 }
673
674 static void __exit bfin_t350mcqb_driver_cleanup(void)
675 {
676         platform_driver_unregister(&bfin_t350mcqb_driver);
677 }
678
679 MODULE_DESCRIPTION("Blackfin TFT LCD Driver");
680 MODULE_LICENSE("GPL");
681
682 module_init(bfin_t350mcqb_driver_init);
683 module_exit(bfin_t350mcqb_driver_cleanup);