Commit | Line | Data |
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0d3244d6 MD |
1 | /* |
2 | * V4L2 Driver for SuperH Mobile CEU interface | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * | |
6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", | |
7 | * | |
8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/io.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/fs.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/moduleparam.h> | |
28 | #include <linux/time.h> | |
29 | #include <linux/version.h> | |
30 | #include <linux/device.h> | |
31 | #include <linux/platform_device.h> | |
0d3244d6 | 32 | #include <linux/videodev2.h> |
6d1386c6 | 33 | #include <linux/pm_runtime.h> |
0d3244d6 MD |
34 | |
35 | #include <media/v4l2-common.h> | |
36 | #include <media/v4l2-dev.h> | |
37 | #include <media/soc_camera.h> | |
38 | #include <media/sh_mobile_ceu.h> | |
39 | #include <media/videobuf-dma-contig.h> | |
40 | ||
41 | /* register offsets for sh7722 / sh7723 */ | |
42 | ||
dd54203b MD |
43 | #define CAPSR 0x00 /* Capture start register */ |
44 | #define CAPCR 0x04 /* Capture control register */ | |
45 | #define CAMCR 0x08 /* Capture interface control register */ | |
46 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
47 | #define CAMOR 0x10 /* Capture interface offset register */ | |
48 | #define CAPWR 0x14 /* Capture interface width register */ | |
49 | #define CAIFR 0x18 /* Capture interface input format register */ | |
50 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
51 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
52 | #define CRCNTR 0x28 /* CEU register control register */ | |
53 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
54 | #define CFLCR 0x30 /* Capture filter control register */ | |
55 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
56 | #define CDWDR 0x38 /* Capture destination width register */ | |
57 | #define CDAYR 0x3c /* Capture data address Y register */ | |
58 | #define CDACR 0x40 /* Capture data address C register */ | |
59 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
60 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
61 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
62 | #define CFWCR 0x5c /* Firewall operation control register */ | |
63 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
64 | #define CDOCR 0x64 /* Capture data output control register */ | |
65 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
66 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
67 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
68 | #define CETCR 0x74 /* Capture event flag clear register */ | |
69 | #define CSTSR 0x7c /* Capture status register */ | |
70 | #define CSRTR 0x80 /* Capture software reset register */ | |
71 | #define CDSSR 0x84 /* Capture data size register */ | |
72 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
73 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
74 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
75 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 76 | |
0d3244d6 MD |
77 | /* per video frame buffer */ |
78 | struct sh_mobile_ceu_buffer { | |
79 | struct videobuf_buffer vb; /* v4l buffer must be first */ | |
80 | const struct soc_camera_data_format *fmt; | |
81 | }; | |
82 | ||
83 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
84 | struct soc_camera_host ici; |
85 | struct soc_camera_device *icd; | |
86 | ||
87 | unsigned int irq; | |
88 | void __iomem *base; | |
89 | unsigned long video_limit; | |
90 | ||
c60f2b5c | 91 | /* lock used to protect videobuf */ |
0d3244d6 MD |
92 | spinlock_t lock; |
93 | struct list_head capture; | |
94 | struct videobuf_buffer *active; | |
e802967c | 95 | int is_interlaced; |
0d3244d6 MD |
96 | |
97 | struct sh_mobile_ceu_info *pdata; | |
8be65dc5 MD |
98 | |
99 | const struct soc_camera_data_format *camera_fmt; | |
0d3244d6 MD |
100 | }; |
101 | ||
c354b400 KM |
102 | static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev) |
103 | { | |
104 | unsigned long flags; | |
105 | ||
106 | flags = SOCAM_MASTER | | |
107 | SOCAM_PCLK_SAMPLE_RISING | | |
108 | SOCAM_HSYNC_ACTIVE_HIGH | | |
109 | SOCAM_HSYNC_ACTIVE_LOW | | |
110 | SOCAM_VSYNC_ACTIVE_HIGH | | |
111 | SOCAM_VSYNC_ACTIVE_LOW | | |
112 | SOCAM_DATA_ACTIVE_HIGH; | |
113 | ||
114 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_8BIT_BUS) | |
115 | flags |= SOCAM_DATAWIDTH_8; | |
116 | ||
117 | if (pcdev->pdata->flags & SH_CEU_FLAG_USE_16BIT_BUS) | |
118 | flags |= SOCAM_DATAWIDTH_16; | |
119 | ||
120 | if (flags & SOCAM_DATAWIDTH_MASK) | |
121 | return flags; | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
0d3244d6 | 126 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 127 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
128 | { |
129 | iowrite32(data, priv->base + reg_offs); | |
130 | } | |
131 | ||
7a1a8164 | 132 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
133 | { |
134 | return ioread32(priv->base + reg_offs); | |
135 | } | |
136 | ||
137 | /* | |
138 | * Videobuf operations | |
139 | */ | |
140 | static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq, | |
141 | unsigned int *count, | |
142 | unsigned int *size) | |
143 | { | |
144 | struct soc_camera_device *icd = vq->priv_data; | |
145 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
146 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
147 | int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3; | |
148 | ||
149 | *size = PAGE_ALIGN(icd->width * icd->height * bytes_per_pixel); | |
150 | ||
151 | if (0 == *count) | |
152 | *count = 2; | |
153 | ||
154 | if (pcdev->video_limit) { | |
155 | while (*size * *count > pcdev->video_limit) | |
156 | (*count)--; | |
157 | } | |
158 | ||
159 | dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size); | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | static void free_buffer(struct videobuf_queue *vq, | |
165 | struct sh_mobile_ceu_buffer *buf) | |
166 | { | |
167 | struct soc_camera_device *icd = vq->priv_data; | |
168 | ||
86751b01 | 169 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
170 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
171 | ||
172 | if (in_interrupt()) | |
173 | BUG(); | |
174 | ||
97215cbd | 175 | videobuf_waiton(&buf->vb, 0, 0); |
0d3244d6 MD |
176 | videobuf_dma_contig_free(vq, &buf->vb); |
177 | dev_dbg(&icd->dev, "%s freed\n", __func__); | |
178 | buf->vb.state = VIDEOBUF_NEEDS_INIT; | |
179 | } | |
180 | ||
7a1a8164 MD |
181 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
182 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
183 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
184 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ | |
185 | ||
186 | ||
0d3244d6 MD |
187 | static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) |
188 | { | |
8be65dc5 | 189 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 190 | dma_addr_t phys_addr_top, phys_addr_bottom; |
7a1a8164 MD |
191 | |
192 | /* The hardware is _very_ picky about this sequence. Especially | |
193 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge | |
194 | * several not-so-well documented interrupt sources in CETCR. | |
195 | */ | |
196 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_CPEIE); | |
197 | ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & CEU_CETCR_MAGIC); | |
198 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_CPEIE); | |
199 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); | |
200 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 201 | |
8be65dc5 MD |
202 | if (!pcdev->active) |
203 | return; | |
204 | ||
ccab8a29 KM |
205 | phys_addr_top = videobuf_to_dma_contig(pcdev->active); |
206 | ceu_write(pcdev, CDAYR, phys_addr_top); | |
e802967c | 207 | if (pcdev->is_interlaced) { |
ccab8a29 KM |
208 | phys_addr_bottom = phys_addr_top + icd->width; |
209 | ceu_write(pcdev, CDBYR, phys_addr_bottom); | |
210 | } | |
8be65dc5 MD |
211 | |
212 | switch (icd->current_fmt->fourcc) { | |
213 | case V4L2_PIX_FMT_NV12: | |
214 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
215 | case V4L2_PIX_FMT_NV16: |
216 | case V4L2_PIX_FMT_NV61: | |
ccab8a29 KM |
217 | phys_addr_top += icd->width * icd->height; |
218 | ceu_write(pcdev, CDACR, phys_addr_top); | |
e802967c | 219 | if (pcdev->is_interlaced) { |
ccab8a29 KM |
220 | phys_addr_bottom = phys_addr_top + icd->width; |
221 | ceu_write(pcdev, CDBCR, phys_addr_bottom); | |
222 | } | |
0d3244d6 | 223 | } |
8be65dc5 MD |
224 | |
225 | pcdev->active->state = VIDEOBUF_ACTIVE; | |
226 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ | |
0d3244d6 MD |
227 | } |
228 | ||
229 | static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq, | |
230 | struct videobuf_buffer *vb, | |
231 | enum v4l2_field field) | |
232 | { | |
233 | struct soc_camera_device *icd = vq->priv_data; | |
234 | struct sh_mobile_ceu_buffer *buf; | |
235 | int ret; | |
236 | ||
237 | buf = container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
238 | ||
86751b01 | 239 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
240 | vb, vb->baddr, vb->bsize); |
241 | ||
242 | /* Added list head initialization on alloc */ | |
243 | WARN_ON(!list_empty(&vb->queue)); | |
244 | ||
245 | #ifdef DEBUG | |
246 | /* This can be useful if you want to see if we actually fill | |
247 | * the buffer with something */ | |
248 | memset((void *)vb->baddr, 0xaa, vb->bsize); | |
249 | #endif | |
250 | ||
251 | BUG_ON(NULL == icd->current_fmt); | |
252 | ||
253 | if (buf->fmt != icd->current_fmt || | |
254 | vb->width != icd->width || | |
255 | vb->height != icd->height || | |
256 | vb->field != field) { | |
257 | buf->fmt = icd->current_fmt; | |
258 | vb->width = icd->width; | |
259 | vb->height = icd->height; | |
260 | vb->field = field; | |
261 | vb->state = VIDEOBUF_NEEDS_INIT; | |
262 | } | |
263 | ||
264 | vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3); | |
265 | if (0 != vb->baddr && vb->bsize < vb->size) { | |
266 | ret = -EINVAL; | |
267 | goto out; | |
268 | } | |
269 | ||
270 | if (vb->state == VIDEOBUF_NEEDS_INIT) { | |
271 | ret = videobuf_iolock(vq, vb, NULL); | |
272 | if (ret) | |
273 | goto fail; | |
274 | vb->state = VIDEOBUF_PREPARED; | |
275 | } | |
276 | ||
277 | return 0; | |
278 | fail: | |
279 | free_buffer(vq, buf); | |
280 | out: | |
281 | return ret; | |
282 | } | |
283 | ||
2dd54a54 | 284 | /* Called under spinlock_irqsave(&pcdev->lock, ...) */ |
0d3244d6 MD |
285 | static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq, |
286 | struct videobuf_buffer *vb) | |
287 | { | |
288 | struct soc_camera_device *icd = vq->priv_data; | |
289 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
290 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 291 | |
86751b01 | 292 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__, |
0d3244d6 MD |
293 | vb, vb->baddr, vb->bsize); |
294 | ||
51354cc3 | 295 | vb->state = VIDEOBUF_QUEUED; |
0d3244d6 MD |
296 | list_add_tail(&vb->queue, &pcdev->capture); |
297 | ||
298 | if (!pcdev->active) { | |
299 | pcdev->active = vb; | |
300 | sh_mobile_ceu_capture(pcdev); | |
301 | } | |
0d3244d6 MD |
302 | } |
303 | ||
304 | static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq, | |
305 | struct videobuf_buffer *vb) | |
306 | { | |
307 | free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb)); | |
308 | } | |
309 | ||
310 | static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = { | |
311 | .buf_setup = sh_mobile_ceu_videobuf_setup, | |
312 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
313 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
314 | .buf_release = sh_mobile_ceu_videobuf_release, | |
315 | }; | |
316 | ||
317 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
318 | { | |
319 | struct sh_mobile_ceu_dev *pcdev = data; | |
320 | struct videobuf_buffer *vb; | |
321 | unsigned long flags; | |
322 | ||
323 | spin_lock_irqsave(&pcdev->lock, flags); | |
324 | ||
325 | vb = pcdev->active; | |
326 | list_del_init(&vb->queue); | |
327 | ||
328 | if (!list_empty(&pcdev->capture)) | |
329 | pcdev->active = list_entry(pcdev->capture.next, | |
330 | struct videobuf_buffer, queue); | |
331 | else | |
332 | pcdev->active = NULL; | |
333 | ||
334 | sh_mobile_ceu_capture(pcdev); | |
335 | ||
336 | vb->state = VIDEOBUF_DONE; | |
337 | do_gettimeofday(&vb->ts); | |
338 | vb->field_count++; | |
339 | wake_up(&vb->done); | |
340 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
341 | ||
342 | return IRQ_HANDLED; | |
343 | } | |
344 | ||
1c3bb743 | 345 | /* Called with .video_lock held */ |
0d3244d6 MD |
346 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
347 | { | |
348 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
349 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
0d3244d6 | 350 | |
0d3244d6 | 351 | if (pcdev->icd) |
979ea1dd | 352 | return -EBUSY; |
0d3244d6 MD |
353 | |
354 | dev_info(&icd->dev, | |
355 | "SuperH Mobile CEU driver attached to camera %d\n", | |
356 | icd->devnum); | |
357 | ||
40e2e092 GL |
358 | clk_enable(pcdev->clk); |
359 | ||
0d3244d6 MD |
360 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ |
361 | while (ceu_read(pcdev, CSTSR) & 1) | |
362 | msleep(1); | |
363 | ||
364 | pcdev->icd = icd; | |
979ea1dd GL |
365 | |
366 | return 0; | |
0d3244d6 MD |
367 | } |
368 | ||
1c3bb743 | 369 | /* Called with .video_lock held */ |
0d3244d6 MD |
370 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
371 | { | |
372 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
373 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
51354cc3 | 374 | unsigned long flags; |
0d3244d6 MD |
375 | |
376 | BUG_ON(icd != pcdev->icd); | |
377 | ||
378 | /* disable capture, disable interrupts */ | |
379 | ceu_write(pcdev, CEIER, 0); | |
380 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
51354cc3 MD |
381 | |
382 | /* make sure active buffer is canceled */ | |
383 | spin_lock_irqsave(&pcdev->lock, flags); | |
384 | if (pcdev->active) { | |
385 | list_del(&pcdev->active->queue); | |
386 | pcdev->active->state = VIDEOBUF_ERROR; | |
387 | wake_up_all(&pcdev->active->done); | |
388 | pcdev->active = NULL; | |
389 | } | |
390 | spin_unlock_irqrestore(&pcdev->lock, flags); | |
391 | ||
40e2e092 GL |
392 | clk_disable(pcdev->clk); |
393 | ||
0d3244d6 MD |
394 | dev_info(&icd->dev, |
395 | "SuperH Mobile CEU driver detached from camera %d\n", | |
396 | icd->devnum); | |
397 | ||
398 | pcdev->icd = NULL; | |
399 | } | |
400 | ||
401 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd, | |
402 | __u32 pixfmt) | |
403 | { | |
404 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
405 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
ccab8a29 | 406 | int ret, buswidth, width, height, cfszr_width, cdwdr_width; |
0d3244d6 | 407 | unsigned long camera_flags, common_flags, value; |
8be65dc5 | 408 | int yuv_mode, yuv_lineskip; |
0d3244d6 MD |
409 | |
410 | camera_flags = icd->ops->query_bus_param(icd); | |
411 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 412 | make_bus_param(pcdev)); |
0d3244d6 MD |
413 | if (!common_flags) |
414 | return -EINVAL; | |
415 | ||
416 | ret = icd->ops->set_bus_param(icd, common_flags); | |
417 | if (ret < 0) | |
418 | return ret; | |
419 | ||
420 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { | |
421 | case SOCAM_DATAWIDTH_8: | |
422 | buswidth = 8; | |
423 | break; | |
424 | case SOCAM_DATAWIDTH_16: | |
425 | buswidth = 16; | |
426 | break; | |
427 | default: | |
428 | return -EINVAL; | |
429 | } | |
430 | ||
431 | ceu_write(pcdev, CRCNTR, 0); | |
432 | ceu_write(pcdev, CRCMPR, 0); | |
433 | ||
8be65dc5 MD |
434 | value = 0x00000010; /* data fetch by default */ |
435 | yuv_mode = yuv_lineskip = 0; | |
436 | ||
437 | switch (icd->current_fmt->fourcc) { | |
438 | case V4L2_PIX_FMT_NV12: | |
439 | case V4L2_PIX_FMT_NV21: | |
440 | yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
441 | /* fall-through */ |
442 | case V4L2_PIX_FMT_NV16: | |
443 | case V4L2_PIX_FMT_NV61: | |
8be65dc5 MD |
444 | yuv_mode = 1; |
445 | switch (pcdev->camera_fmt->fourcc) { | |
446 | case V4L2_PIX_FMT_UYVY: | |
447 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ | |
448 | break; | |
449 | case V4L2_PIX_FMT_VYUY: | |
450 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ | |
451 | break; | |
452 | case V4L2_PIX_FMT_YUYV: | |
453 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ | |
454 | break; | |
455 | case V4L2_PIX_FMT_YVYU: | |
456 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ | |
457 | break; | |
458 | default: | |
459 | BUG(); | |
460 | } | |
461 | } | |
462 | ||
7a1a8164 MD |
463 | if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
464 | icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 465 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 466 | |
7a1a8164 MD |
467 | value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
468 | value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
469 | value |= buswidth == 16 ? 1 << 12 : 0; | |
0d3244d6 MD |
470 | ceu_write(pcdev, CAMCR, value); |
471 | ||
472 | ceu_write(pcdev, CAPCR, 0x00300000); | |
e802967c | 473 | ceu_write(pcdev, CAIFR, pcdev->is_interlaced ? 0x101 : 0); |
0d3244d6 MD |
474 | |
475 | mdelay(1); | |
476 | ||
8be65dc5 MD |
477 | if (yuv_mode) { |
478 | width = icd->width * 2; | |
7a1a8164 | 479 | width = buswidth == 16 ? width / 2 : width; |
8be65dc5 MD |
480 | cfszr_width = cdwdr_width = icd->width; |
481 | } else { | |
482 | width = icd->width * ((icd->current_fmt->depth + 7) >> 3); | |
7a1a8164 MD |
483 | width = buswidth == 16 ? width / 2 : width; |
484 | cfszr_width = buswidth == 8 ? width / 2 : width; | |
485 | cdwdr_width = buswidth == 16 ? width * 2 : width; | |
8be65dc5 | 486 | } |
0d3244d6 | 487 | |
ccab8a29 | 488 | height = icd->height; |
e802967c | 489 | if (pcdev->is_interlaced) { |
ccab8a29 KM |
490 | height /= 2; |
491 | cdwdr_width *= 2; | |
492 | } | |
493 | ||
0d3244d6 | 494 | ceu_write(pcdev, CAMOR, 0); |
ccab8a29 | 495 | ceu_write(pcdev, CAPWR, (height << 16) | width); |
8be65dc5 | 496 | ceu_write(pcdev, CFLCR, 0); /* no scaling */ |
ccab8a29 | 497 | ceu_write(pcdev, CFSZR, (height << 16) | cfszr_width); |
dd54203b MD |
498 | |
499 | /* A few words about byte order (observed in Big Endian mode) | |
500 | * | |
501 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
502 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
503 | * | |
504 | * The data is however by default written to memory in reverse order: | |
505 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
506 | * | |
507 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
508 | * using 7 we swap the data bytes to match the incoming order: |
509 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 510 | */ |
8be65dc5 MD |
511 | value = 0x00000017; |
512 | if (yuv_lineskip) | |
513 | value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */ | |
514 | ||
515 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
516 | |
517 | ceu_write(pcdev, CDWDR, cdwdr_width); | |
518 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ | |
519 | ||
520 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ | |
0d3244d6 MD |
521 | return 0; |
522 | } | |
523 | ||
9414de39 | 524 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd) |
0d3244d6 MD |
525 | { |
526 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
527 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
528 | unsigned long camera_flags, common_flags; | |
529 | ||
530 | camera_flags = icd->ops->query_bus_param(icd); | |
531 | common_flags = soc_camera_bus_param_compatible(camera_flags, | |
c354b400 | 532 | make_bus_param(pcdev)); |
0d3244d6 MD |
533 | if (!common_flags) |
534 | return -EINVAL; | |
535 | ||
536 | return 0; | |
537 | } | |
538 | ||
8be65dc5 MD |
539 | static const struct soc_camera_data_format sh_mobile_ceu_formats[] = { |
540 | { | |
541 | .name = "NV12", | |
542 | .depth = 12, | |
543 | .fourcc = V4L2_PIX_FMT_NV12, | |
544 | .colorspace = V4L2_COLORSPACE_JPEG, | |
545 | }, | |
546 | { | |
547 | .name = "NV21", | |
548 | .depth = 12, | |
549 | .fourcc = V4L2_PIX_FMT_NV21, | |
550 | .colorspace = V4L2_COLORSPACE_JPEG, | |
551 | }, | |
9e4a56d2 MD |
552 | { |
553 | .name = "NV16", | |
554 | .depth = 16, | |
555 | .fourcc = V4L2_PIX_FMT_NV16, | |
556 | .colorspace = V4L2_COLORSPACE_JPEG, | |
557 | }, | |
558 | { | |
559 | .name = "NV61", | |
560 | .depth = 16, | |
561 | .fourcc = V4L2_PIX_FMT_NV61, | |
562 | .colorspace = V4L2_COLORSPACE_JPEG, | |
563 | }, | |
8be65dc5 MD |
564 | }; |
565 | ||
9414de39 MD |
566 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx, |
567 | struct soc_camera_format_xlate *xlate) | |
568 | { | |
569 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
8be65dc5 | 570 | int ret, k, n; |
9414de39 MD |
571 | int formats = 0; |
572 | ||
573 | ret = sh_mobile_ceu_try_bus_param(icd); | |
574 | if (ret < 0) | |
575 | return 0; | |
576 | ||
c8329acc GL |
577 | /* Beginning of a pass */ |
578 | if (!idx) | |
579 | icd->host_priv = NULL; | |
580 | ||
9414de39 | 581 | switch (icd->formats[idx].fourcc) { |
8be65dc5 MD |
582 | case V4L2_PIX_FMT_UYVY: |
583 | case V4L2_PIX_FMT_VYUY: | |
584 | case V4L2_PIX_FMT_YUYV: | |
585 | case V4L2_PIX_FMT_YVYU: | |
c8329acc GL |
586 | if (icd->host_priv) |
587 | goto add_single_format; | |
588 | ||
589 | /* | |
590 | * Our case is simple so far: for any of the above four camera | |
591 | * formats we add all our four synthesized NV* formats, so, | |
592 | * just marking the device with a single flag suffices. If | |
593 | * the format generation rules are more complex, you would have | |
594 | * to actually hang your already added / counted formats onto | |
595 | * the host_priv pointer and check whether the format you're | |
596 | * going to add now is already there. | |
597 | */ | |
598 | icd->host_priv = (void *)sh_mobile_ceu_formats; | |
599 | ||
8be65dc5 MD |
600 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
601 | formats += n; | |
602 | for (k = 0; xlate && k < n; k++) { | |
603 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; | |
604 | xlate->cam_fmt = icd->formats + idx; | |
605 | xlate->buswidth = icd->formats[idx].depth; | |
606 | xlate++; | |
979ea1dd | 607 | dev_dbg(ici->v4l2_dev.dev, "Providing format %s using %s\n", |
8be65dc5 MD |
608 | sh_mobile_ceu_formats[k].name, |
609 | icd->formats[idx].name); | |
610 | } | |
9414de39 | 611 | default: |
c8329acc | 612 | add_single_format: |
9414de39 MD |
613 | /* Generic pass-through */ |
614 | formats++; | |
615 | if (xlate) { | |
616 | xlate->host_fmt = icd->formats + idx; | |
617 | xlate->cam_fmt = icd->formats + idx; | |
618 | xlate->buswidth = icd->formats[idx].depth; | |
619 | xlate++; | |
979ea1dd | 620 | dev_dbg(ici->v4l2_dev.dev, |
9414de39 MD |
621 | "Providing format %s in pass-through mode\n", |
622 | icd->formats[idx].name); | |
623 | } | |
624 | } | |
625 | ||
626 | return formats; | |
627 | } | |
628 | ||
09e231b3 GL |
629 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, |
630 | struct v4l2_rect *rect) | |
631 | { | |
632 | return icd->ops->set_crop(icd, rect); | |
633 | } | |
634 | ||
d8fac217 | 635 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 636 | struct v4l2_format *f) |
0d3244d6 | 637 | { |
9414de39 | 638 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
8be65dc5 | 639 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
09e231b3 | 640 | __u32 pixfmt = f->fmt.pix.pixelformat; |
9414de39 | 641 | const struct soc_camera_format_xlate *xlate; |
25c4d74e GL |
642 | int ret; |
643 | ||
9414de39 MD |
644 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
645 | if (!xlate) { | |
979ea1dd | 646 | dev_warn(ici->v4l2_dev.dev, "Format %x not found\n", pixfmt); |
9414de39 | 647 | return -EINVAL; |
25c4d74e GL |
648 | } |
649 | ||
979ea1dd GL |
650 | f->fmt.pix.pixelformat = xlate->cam_fmt->fourcc; |
651 | ret = v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, video, s_fmt, f); | |
652 | f->fmt.pix.pixelformat = pixfmt; | |
0ad675eb | 653 | if (!ret) { |
9414de39 MD |
654 | icd->buswidth = xlate->buswidth; |
655 | icd->current_fmt = xlate->host_fmt; | |
8be65dc5 | 656 | pcdev->camera_fmt = xlate->cam_fmt; |
9414de39 | 657 | } |
25c4d74e GL |
658 | |
659 | return ret; | |
0d3244d6 MD |
660 | } |
661 | ||
d8fac217 GL |
662 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
663 | struct v4l2_format *f) | |
0d3244d6 | 664 | { |
9414de39 | 665 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
ccab8a29 | 666 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
9414de39 MD |
667 | const struct soc_camera_format_xlate *xlate; |
668 | __u32 pixfmt = f->fmt.pix.pixelformat; | |
ccab8a29 | 669 | int ret; |
a2c8c68c | 670 | |
9414de39 MD |
671 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
672 | if (!xlate) { | |
979ea1dd | 673 | dev_warn(ici->v4l2_dev.dev, "Format %x not found\n", pixfmt); |
25c4d74e | 674 | return -EINVAL; |
9414de39 | 675 | } |
25c4d74e | 676 | |
0d3244d6 MD |
677 | /* FIXME: calculate using depth and bus width */ |
678 | ||
bc44fc06 TP |
679 | v4l_bound_align_image(&f->fmt.pix.width, 2, 2560, 1, |
680 | &f->fmt.pix.height, 4, 1920, 2, 0); | |
0d3244d6 | 681 | |
25c4d74e | 682 | f->fmt.pix.bytesperline = f->fmt.pix.width * |
9414de39 | 683 | DIV_ROUND_UP(xlate->host_fmt->depth, 8); |
25c4d74e GL |
684 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; |
685 | ||
979ea1dd GL |
686 | f->fmt.pix.pixelformat = xlate->cam_fmt->fourcc; |
687 | ||
0d3244d6 | 688 | /* limit to sensor capabilities */ |
979ea1dd GL |
689 | ret = v4l2_device_call_until_err(&ici->v4l2_dev, (__u32)icd, video, try_fmt, f); |
690 | f->fmt.pix.pixelformat = pixfmt; | |
ccab8a29 KM |
691 | if (ret < 0) |
692 | return ret; | |
693 | ||
694 | switch (f->fmt.pix.field) { | |
695 | case V4L2_FIELD_INTERLACED: | |
e802967c | 696 | pcdev->is_interlaced = 1; |
ccab8a29 KM |
697 | break; |
698 | case V4L2_FIELD_ANY: | |
699 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
700 | /* fall-through */ | |
701 | case V4L2_FIELD_NONE: | |
e802967c | 702 | pcdev->is_interlaced = 0; |
ccab8a29 KM |
703 | break; |
704 | default: | |
705 | ret = -EINVAL; | |
706 | break; | |
707 | } | |
708 | ||
709 | return ret; | |
0d3244d6 MD |
710 | } |
711 | ||
712 | static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf, | |
713 | struct v4l2_requestbuffers *p) | |
714 | { | |
715 | int i; | |
716 | ||
717 | /* This is for locking debugging only. I removed spinlocks and now I | |
718 | * check whether .prepare is ever called on a linked buffer, or whether | |
719 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now | |
720 | * it hadn't triggered */ | |
721 | for (i = 0; i < p->count; i++) { | |
722 | struct sh_mobile_ceu_buffer *buf; | |
723 | ||
724 | buf = container_of(icf->vb_vidq.bufs[i], | |
725 | struct sh_mobile_ceu_buffer, vb); | |
726 | INIT_LIST_HEAD(&buf->vb.queue); | |
727 | } | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) | |
733 | { | |
734 | struct soc_camera_file *icf = file->private_data; | |
735 | struct sh_mobile_ceu_buffer *buf; | |
736 | ||
737 | buf = list_entry(icf->vb_vidq.stream.next, | |
738 | struct sh_mobile_ceu_buffer, vb.stream); | |
739 | ||
740 | poll_wait(file, &buf->vb.done, pt); | |
741 | ||
742 | if (buf->vb.state == VIDEOBUF_DONE || | |
743 | buf->vb.state == VIDEOBUF_ERROR) | |
744 | return POLLIN|POLLRDNORM; | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
750 | struct v4l2_capability *cap) | |
751 | { | |
752 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
753 | cap->version = KERNEL_VERSION(0, 0, 5); | |
754 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; | |
755 | return 0; | |
756 | } | |
757 | ||
758 | static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q, | |
759 | struct soc_camera_device *icd) | |
760 | { | |
761 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
762 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
763 | ||
764 | videobuf_queue_dma_contig_init(q, | |
765 | &sh_mobile_ceu_videobuf_ops, | |
979ea1dd | 766 | ici->v4l2_dev.dev, &pcdev->lock, |
0d3244d6 | 767 | V4L2_BUF_TYPE_VIDEO_CAPTURE, |
e802967c GL |
768 | pcdev->is_interlaced ? |
769 | V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE, | |
0d3244d6 MD |
770 | sizeof(struct sh_mobile_ceu_buffer), |
771 | icd); | |
772 | } | |
773 | ||
4a6110bc GL |
774 | static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd, |
775 | struct v4l2_control *ctrl) | |
776 | { | |
777 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
778 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
779 | u32 val; | |
780 | ||
781 | switch (ctrl->id) { | |
782 | case V4L2_CID_SHARPNESS: | |
783 | val = ceu_read(pcdev, CLFCR); | |
784 | ctrl->value = val ^ 1; | |
785 | return 0; | |
786 | } | |
787 | return -ENOIOCTLCMD; | |
788 | } | |
789 | ||
790 | static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd, | |
791 | struct v4l2_control *ctrl) | |
792 | { | |
793 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); | |
794 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
795 | ||
796 | switch (ctrl->id) { | |
797 | case V4L2_CID_SHARPNESS: | |
798 | switch (icd->current_fmt->fourcc) { | |
799 | case V4L2_PIX_FMT_NV12: | |
800 | case V4L2_PIX_FMT_NV21: | |
801 | case V4L2_PIX_FMT_NV16: | |
802 | case V4L2_PIX_FMT_NV61: | |
803 | ceu_write(pcdev, CLFCR, !ctrl->value); | |
804 | return 0; | |
805 | } | |
806 | return -EINVAL; | |
807 | } | |
808 | return -ENOIOCTLCMD; | |
809 | } | |
810 | ||
811 | static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = { | |
812 | { | |
813 | .id = V4L2_CID_SHARPNESS, | |
814 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
815 | .name = "Low-pass filter", | |
816 | .minimum = 0, | |
817 | .maximum = 1, | |
818 | .step = 1, | |
819 | .default_value = 0, | |
820 | }, | |
821 | }; | |
822 | ||
0d3244d6 MD |
823 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { |
824 | .owner = THIS_MODULE, | |
825 | .add = sh_mobile_ceu_add_device, | |
826 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 827 | .get_formats = sh_mobile_ceu_get_formats, |
09e231b3 | 828 | .set_crop = sh_mobile_ceu_set_crop, |
d8fac217 GL |
829 | .set_fmt = sh_mobile_ceu_set_fmt, |
830 | .try_fmt = sh_mobile_ceu_try_fmt, | |
4a6110bc GL |
831 | .set_ctrl = sh_mobile_ceu_set_ctrl, |
832 | .get_ctrl = sh_mobile_ceu_get_ctrl, | |
0d3244d6 MD |
833 | .reqbufs = sh_mobile_ceu_reqbufs, |
834 | .poll = sh_mobile_ceu_poll, | |
835 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 MD |
836 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
837 | .init_videobuf = sh_mobile_ceu_init_videobuf, | |
4a6110bc GL |
838 | .controls = sh_mobile_ceu_controls, |
839 | .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls), | |
0d3244d6 MD |
840 | }; |
841 | ||
979ea1dd | 842 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
843 | { |
844 | struct sh_mobile_ceu_dev *pcdev; | |
845 | struct resource *res; | |
846 | void __iomem *base; | |
847 | unsigned int irq; | |
848 | int err = 0; | |
849 | ||
850 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
851 | irq = platform_get_irq(pdev, 0); | |
852 | if (!res || !irq) { | |
853 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); | |
854 | err = -ENODEV; | |
855 | goto exit; | |
856 | } | |
857 | ||
858 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
859 | if (!pcdev) { | |
860 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
861 | err = -ENOMEM; | |
862 | goto exit; | |
863 | } | |
864 | ||
0d3244d6 MD |
865 | INIT_LIST_HEAD(&pcdev->capture); |
866 | spin_lock_init(&pcdev->lock); | |
867 | ||
868 | pcdev->pdata = pdev->dev.platform_data; | |
869 | if (!pcdev->pdata) { | |
870 | err = -EINVAL; | |
871 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
872 | goto exit_kfree; | |
873 | } | |
874 | ||
eb6c8558 | 875 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
876 | if (!base) { |
877 | err = -ENXIO; | |
878 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
879 | goto exit_kfree; | |
880 | } | |
881 | ||
882 | pcdev->irq = irq; | |
883 | pcdev->base = base; | |
884 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
885 | |
886 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
887 | if (res) { | |
888 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
889 | res->start, | |
eb6c8558 | 890 | resource_size(res), |
0d3244d6 MD |
891 | DMA_MEMORY_MAP | |
892 | DMA_MEMORY_EXCLUSIVE); | |
893 | if (!err) { | |
894 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
895 | err = -ENXIO; | |
896 | goto exit_iounmap; | |
897 | } | |
898 | ||
eb6c8558 | 899 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
900 | } |
901 | ||
902 | /* request irq */ | |
903 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 904 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
905 | if (err) { |
906 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
907 | goto exit_release_mem; | |
908 | } | |
909 | ||
6d1386c6 MD |
910 | pm_suspend_ignore_children(&pdev->dev, true); |
911 | pm_runtime_enable(&pdev->dev); | |
912 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 913 | |
0d3244d6 | 914 | pcdev->ici.priv = pcdev; |
979ea1dd | 915 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 916 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
917 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
918 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
0d3244d6 MD |
919 | |
920 | err = soc_camera_host_register(&pcdev->ici); | |
921 | if (err) | |
6d1386c6 | 922 | goto exit_free_irq; |
0d3244d6 MD |
923 | |
924 | return 0; | |
925 | ||
926 | exit_free_irq: | |
927 | free_irq(pcdev->irq, pcdev); | |
928 | exit_release_mem: | |
929 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
930 | dma_release_declared_memory(&pdev->dev); | |
931 | exit_iounmap: | |
932 | iounmap(base); | |
933 | exit_kfree: | |
934 | kfree(pcdev); | |
935 | exit: | |
936 | return err; | |
937 | } | |
938 | ||
979ea1dd | 939 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 940 | { |
eff505fa GL |
941 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
942 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
943 | struct sh_mobile_ceu_dev, ici); | |
0d3244d6 | 944 | |
eff505fa | 945 | soc_camera_host_unregister(soc_host); |
0d3244d6 MD |
946 | free_irq(pcdev->irq, pcdev); |
947 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
948 | dma_release_declared_memory(&pdev->dev); | |
949 | iounmap(pcdev->base); | |
950 | kfree(pcdev); | |
951 | return 0; | |
952 | } | |
953 | ||
6d1386c6 MD |
954 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
955 | { | |
956 | /* Runtime PM callback shared between ->runtime_suspend() | |
957 | * and ->runtime_resume(). Simply returns success. | |
958 | * | |
959 | * This driver re-initializes all registers after | |
960 | * pm_runtime_get_sync() anyway so there is no need | |
961 | * to save and restore registers here. | |
962 | */ | |
963 | return 0; | |
964 | } | |
965 | ||
966 | static struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { | |
967 | .runtime_suspend = sh_mobile_ceu_runtime_nop, | |
968 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
969 | }; | |
970 | ||
0d3244d6 MD |
971 | static struct platform_driver sh_mobile_ceu_driver = { |
972 | .driver = { | |
973 | .name = "sh_mobile_ceu", | |
6d1386c6 | 974 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
975 | }, |
976 | .probe = sh_mobile_ceu_probe, | |
979ea1dd | 977 | .remove = __exit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
978 | }; |
979 | ||
980 | static int __init sh_mobile_ceu_init(void) | |
981 | { | |
982 | return platform_driver_register(&sh_mobile_ceu_driver); | |
983 | } | |
984 | ||
985 | static void __exit sh_mobile_ceu_exit(void) | |
986 | { | |
01c1e4ca | 987 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
988 | } |
989 | ||
990 | module_init(sh_mobile_ceu_init); | |
991 | module_exit(sh_mobile_ceu_exit); | |
992 | ||
993 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
994 | MODULE_AUTHOR("Magnus Damm"); | |
995 | MODULE_LICENSE("GPL"); | |
40e2e092 | 996 | MODULE_ALIAS("platform:sh_mobile_ceu"); |