2 * SuperH Mobile MERAM Driver for SuperH Mobile LCDC Driver
4 * Copyright (c) 2011 Damian Hobson-Garcia <dhobsong@igel.co.jp>
5 * Takanari Hayama <taki@igel.co.jp>
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
12 #include <linux/device.h>
13 #include <linux/err.h>
14 #include <linux/genalloc.h>
16 #include <linux/kernel.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/slab.h>
22 #include <video/sh_mobile_meram.h>
24 /* -----------------------------------------------------------------------------
29 #define MEVCR1_RST (1 << 31)
30 #define MEVCR1_WD (1 << 30)
31 #define MEVCR1_AMD1 (1 << 29)
32 #define MEVCR1_AMD0 (1 << 28)
37 #define MExxCTL_BV (1 << 31)
38 #define MExxCTL_BSZ_SHIFT 28
39 #define MExxCTL_MSAR_MASK (0x7ff << MExxCTL_MSAR_SHIFT)
40 #define MExxCTL_MSAR_SHIFT 16
41 #define MExxCTL_NXT_MASK (0x1f << MExxCTL_NXT_SHIFT)
42 #define MExxCTL_NXT_SHIFT 11
43 #define MExxCTL_WD1 (1 << 10)
44 #define MExxCTL_WD0 (1 << 9)
45 #define MExxCTL_WS (1 << 8)
46 #define MExxCTL_CB (1 << 7)
47 #define MExxCTL_WBF (1 << 6)
48 #define MExxCTL_WF (1 << 5)
49 #define MExxCTL_RF (1 << 4)
50 #define MExxCTL_CM (1 << 3)
51 #define MExxCTL_MD_READ (1 << 0)
52 #define MExxCTL_MD_WRITE (2 << 0)
53 #define MExxCTL_MD_ICB_WB (3 << 0)
54 #define MExxCTL_MD_ICB (4 << 0)
55 #define MExxCTL_MD_FB (7 << 0)
56 #define MExxCTL_MD_MASK (7 << 0)
57 #define MExxBSIZE 0x404
58 #define MExxBSIZE_RCNT_SHIFT 28
59 #define MExxBSIZE_YSZM1_SHIFT 16
60 #define MExxBSIZE_XSZM1_SHIFT 0
61 #define MExxMNCF 0x408
62 #define MExxMNCF_KWBNM_SHIFT 28
63 #define MExxMNCF_KRBNM_SHIFT 24
64 #define MExxMNCF_BNM_SHIFT 16
65 #define MExxMNCF_XBV (1 << 15)
66 #define MExxMNCF_CPL_YCBCR444 (1 << 12)
67 #define MExxMNCF_CPL_YCBCR420 (2 << 12)
68 #define MExxMNCF_CPL_YCBCR422 (3 << 12)
69 #define MExxMNCF_CPL_MSK (3 << 12)
70 #define MExxMNCF_BL (1 << 2)
71 #define MExxMNCF_LNM_SHIFT 0
72 #define MExxSARA 0x410
73 #define MExxSARB 0x414
74 #define MExxSBSIZE 0x418
75 #define MExxSBSIZE_HDV (1 << 31)
76 #define MExxSBSIZE_HSZ16 (0 << 28)
77 #define MExxSBSIZE_HSZ32 (1 << 28)
78 #define MExxSBSIZE_HSZ64 (2 << 28)
79 #define MExxSBSIZE_HSZ128 (3 << 28)
80 #define MExxSBSIZE_SBSIZZ_SHIFT 0
82 #define MERAM_MExxCTL_VAL(next, addr) \
83 ((((next) << MExxCTL_NXT_SHIFT) & MExxCTL_NXT_MASK) | \
84 (((addr) << MExxCTL_MSAR_SHIFT) & MExxCTL_MSAR_MASK))
85 #define MERAM_MExxBSIZE_VAL(rcnt, yszm1, xszm1) \
86 (((rcnt) << MExxBSIZE_RCNT_SHIFT) | \
87 ((yszm1) << MExxBSIZE_YSZM1_SHIFT) | \
88 ((xszm1) << MExxBSIZE_XSZM1_SHIFT))
90 static const unsigned long common_regs
[] = {
95 #define MERAM_REGS_SIZE ARRAY_SIZE(common_regs)
97 static const unsigned long icb_regs
[] = {
105 #define ICB_REGS_SIZE ARRAY_SIZE(icb_regs)
108 * sh_mobile_meram_icb - MERAM ICB information
109 * @regs: Registers cache
111 * @offset: MERAM block offset
112 * @size: MERAM block size in KiB
113 * @cache_unit: Bytes to cache per ICB
114 * @pixelformat: Video pixel format of the data stored in the ICB
115 * @current_reg: Which of Start Address Register A (0) or B (1) is in use
117 struct sh_mobile_meram_icb
{
118 unsigned long regs
[ICB_REGS_SIZE
];
120 unsigned long offset
;
123 unsigned int cache_unit
;
124 unsigned int pixelformat
;
125 unsigned int current_reg
;
128 #define MERAM_ICB_NUM 32
130 struct sh_mobile_meram_fb_plane
{
131 struct sh_mobile_meram_icb
*marker
;
132 struct sh_mobile_meram_icb
*cache
;
135 struct sh_mobile_meram_fb_cache
{
136 unsigned int nplanes
;
137 struct sh_mobile_meram_fb_plane planes
[2];
141 * sh_mobile_meram_priv - MERAM device
142 * @base: Registers base address
143 * @meram: MERAM physical address
144 * @regs: Registers cache
145 * @lock: Protects used_icb and icbs
146 * @used_icb: Bitmask of used ICBs
148 * @pool: Allocation pool to manage the MERAM
150 struct sh_mobile_meram_priv
{
153 unsigned long regs
[MERAM_REGS_SIZE
];
156 unsigned long used_icb
;
157 struct sh_mobile_meram_icb icbs
[MERAM_ICB_NUM
];
159 struct gen_pool
*pool
;
163 #define MERAM_GRANULARITY 1024
164 #define MERAM_SEC_LINE 15
165 #define MERAM_LINE_WIDTH 2048
167 /* -----------------------------------------------------------------------------
171 #define MERAM_ICB_OFFSET(base, idx, off) ((base) + (off) + (idx) * 0x20)
173 static inline void meram_write_icb(void __iomem
*base
, unsigned int idx
,
174 unsigned int off
, unsigned long val
)
176 iowrite32(val
, MERAM_ICB_OFFSET(base
, idx
, off
));
179 static inline unsigned long meram_read_icb(void __iomem
*base
, unsigned int idx
,
182 return ioread32(MERAM_ICB_OFFSET(base
, idx
, off
));
185 static inline void meram_write_reg(void __iomem
*base
, unsigned int off
,
188 iowrite32(val
, base
+ off
);
191 static inline unsigned long meram_read_reg(void __iomem
*base
, unsigned int off
)
193 return ioread32(base
+ off
);
196 /* -----------------------------------------------------------------------------
197 * LCDC cache planes allocation, init, cleanup and free
200 /* Allocate ICBs and MERAM for a plane. */
201 static int meram_plane_alloc(struct sh_mobile_meram_priv
*priv
,
202 struct sh_mobile_meram_fb_plane
*plane
,
208 idx
= find_first_zero_bit(&priv
->used_icb
, 28);
211 plane
->cache
= &priv
->icbs
[idx
];
213 idx
= find_next_zero_bit(&priv
->used_icb
, 32, 28);
216 plane
->marker
= &priv
->icbs
[idx
];
218 mem
= gen_pool_alloc(priv
->pool
, size
* 1024);
222 __set_bit(plane
->marker
->index
, &priv
->used_icb
);
223 __set_bit(plane
->cache
->index
, &priv
->used_icb
);
225 plane
->marker
->offset
= mem
- priv
->meram
;
226 plane
->marker
->size
= size
;
231 /* Free ICBs and MERAM for a plane. */
232 static void meram_plane_free(struct sh_mobile_meram_priv
*priv
,
233 struct sh_mobile_meram_fb_plane
*plane
)
235 gen_pool_free(priv
->pool
, priv
->meram
+ plane
->marker
->offset
,
236 plane
->marker
->size
* 1024);
238 __clear_bit(plane
->marker
->index
, &priv
->used_icb
);
239 __clear_bit(plane
->cache
->index
, &priv
->used_icb
);
242 /* Is this a YCbCr(NV12, NV16 or NV24) colorspace? */
243 static int is_nvcolor(int cspace
)
245 if (cspace
== SH_MOBILE_MERAM_PF_NV
||
246 cspace
== SH_MOBILE_MERAM_PF_NV24
)
251 /* Set the next address to fetch. */
252 static void meram_set_next_addr(struct sh_mobile_meram_priv
*priv
,
253 struct sh_mobile_meram_fb_cache
*cache
,
254 unsigned long base_addr_y
,
255 unsigned long base_addr_c
)
257 struct sh_mobile_meram_icb
*icb
= cache
->planes
[0].marker
;
258 unsigned long target
;
260 icb
->current_reg
^= 1;
261 target
= icb
->current_reg
? MExxSARB
: MExxSARA
;
263 /* set the next address to fetch */
264 meram_write_icb(priv
->base
, cache
->planes
[0].cache
->index
, target
,
266 meram_write_icb(priv
->base
, cache
->planes
[0].marker
->index
, target
,
267 base_addr_y
+ cache
->planes
[0].marker
->cache_unit
);
269 if (cache
->nplanes
== 2) {
270 meram_write_icb(priv
->base
, cache
->planes
[1].cache
->index
,
271 target
, base_addr_c
);
272 meram_write_icb(priv
->base
, cache
->planes
[1].marker
->index
,
273 target
, base_addr_c
+
274 cache
->planes
[1].marker
->cache_unit
);
278 /* Get the next ICB address. */
280 meram_get_next_icb_addr(struct sh_mobile_meram_info
*pdata
,
281 struct sh_mobile_meram_fb_cache
*cache
,
282 unsigned long *icb_addr_y
, unsigned long *icb_addr_c
)
284 struct sh_mobile_meram_icb
*icb
= cache
->planes
[0].marker
;
285 unsigned long icb_offset
;
287 if (pdata
->addr_mode
== SH_MOBILE_MERAM_MODE0
)
288 icb_offset
= 0x80000000 | (icb
->current_reg
<< 29);
290 icb_offset
= 0xc0000000 | (icb
->current_reg
<< 23);
292 *icb_addr_y
= icb_offset
| (cache
->planes
[0].marker
->index
<< 24);
293 if (cache
->nplanes
== 2)
294 *icb_addr_c
= icb_offset
295 | (cache
->planes
[1].marker
->index
<< 24);
298 #define MERAM_CALC_BYTECOUNT(x, y) \
299 (((x) * (y) + (MERAM_LINE_WIDTH - 1)) & ~(MERAM_LINE_WIDTH - 1))
301 /* Initialize MERAM. */
302 static int meram_plane_init(struct sh_mobile_meram_priv
*priv
,
303 struct sh_mobile_meram_fb_plane
*plane
,
304 unsigned int xres
, unsigned int yres
,
305 unsigned int *out_pitch
)
307 struct sh_mobile_meram_icb
*marker
= plane
->marker
;
308 unsigned long total_byte_count
= MERAM_CALC_BYTECOUNT(xres
, yres
);
310 unsigned int lcdc_pitch
;
312 unsigned int line_cnt
;
313 unsigned int save_lines
;
315 /* adjust pitch to 1024, 2048, 4096 or 8192 */
316 lcdc_pitch
= (xres
- 1) | 1023;
317 lcdc_pitch
= lcdc_pitch
| (lcdc_pitch
>> 1);
318 lcdc_pitch
= lcdc_pitch
| (lcdc_pitch
>> 2);
321 /* derive settings */
322 if (lcdc_pitch
== 8192 && yres
>= 1024) {
323 lcdc_pitch
= xpitch
= MERAM_LINE_WIDTH
;
324 line_cnt
= total_byte_count
>> 11;
326 save_lines
= plane
->marker
->size
/ 16 / MERAM_SEC_LINE
;
327 save_lines
*= MERAM_SEC_LINE
;
331 *out_pitch
= lcdc_pitch
;
332 save_lines
= plane
->marker
->size
/ (lcdc_pitch
>> 10) / 2;
335 bnm
= (save_lines
- 1) << 16;
337 /* TODO: we better to check if we have enough MERAM buffer size */
340 meram_write_icb(priv
->base
, plane
->cache
->index
, MExxBSIZE
,
341 MERAM_MExxBSIZE_VAL(0x0, line_cnt
- 1, xpitch
- 1));
342 meram_write_icb(priv
->base
, plane
->marker
->index
, MExxBSIZE
,
343 MERAM_MExxBSIZE_VAL(0xf, line_cnt
- 1, xpitch
- 1));
345 meram_write_icb(priv
->base
, plane
->cache
->index
, MExxMNCF
, bnm
);
346 meram_write_icb(priv
->base
, plane
->marker
->index
, MExxMNCF
, bnm
);
348 meram_write_icb(priv
->base
, plane
->cache
->index
, MExxSBSIZE
, xpitch
);
349 meram_write_icb(priv
->base
, plane
->marker
->index
, MExxSBSIZE
, xpitch
);
351 /* save a cache unit size */
352 plane
->cache
->cache_unit
= xres
* save_lines
;
353 plane
->marker
->cache_unit
= xres
* save_lines
;
356 * Set MERAM for framebuffer
358 * we also chain the cache_icb and the marker_icb.
359 * we also split the allocated MERAM buffer between two ICBs.
361 meram_write_icb(priv
->base
, plane
->cache
->index
, MExxCTL
,
362 MERAM_MExxCTL_VAL(plane
->marker
->index
, marker
->offset
)
363 | MExxCTL_WD1
| MExxCTL_WD0
| MExxCTL_WS
| MExxCTL_CM
|
365 meram_write_icb(priv
->base
, plane
->marker
->index
, MExxCTL
,
366 MERAM_MExxCTL_VAL(plane
->cache
->index
, marker
->offset
+
367 plane
->marker
->size
/ 2) |
368 MExxCTL_WD1
| MExxCTL_WD0
| MExxCTL_WS
| MExxCTL_CM
|
374 static void meram_plane_cleanup(struct sh_mobile_meram_priv
*priv
,
375 struct sh_mobile_meram_fb_plane
*plane
)
378 meram_write_icb(priv
->base
, plane
->cache
->index
, MExxCTL
,
379 MExxCTL_WBF
| MExxCTL_WF
| MExxCTL_RF
);
380 meram_write_icb(priv
->base
, plane
->marker
->index
, MExxCTL
,
381 MExxCTL_WBF
| MExxCTL_WF
| MExxCTL_RF
);
383 plane
->cache
->cache_unit
= 0;
384 plane
->marker
->cache_unit
= 0;
387 /* -----------------------------------------------------------------------------
388 * LCDC cache operations
391 /* Allocate memory for the ICBs and mark them as used. */
392 static struct sh_mobile_meram_fb_cache
*
393 meram_cache_alloc(struct sh_mobile_meram_priv
*priv
,
394 const struct sh_mobile_meram_cfg
*cfg
,
397 unsigned int nplanes
= is_nvcolor(pixelformat
) ? 2 : 1;
398 struct sh_mobile_meram_fb_cache
*cache
;
401 cache
= kzalloc(sizeof(*cache
), GFP_KERNEL
);
403 return ERR_PTR(-ENOMEM
);
405 cache
->nplanes
= nplanes
;
407 ret
= meram_plane_alloc(priv
, &cache
->planes
[0],
408 cfg
->icb
[0].meram_size
);
412 cache
->planes
[0].marker
->current_reg
= 1;
413 cache
->planes
[0].marker
->pixelformat
= pixelformat
;
415 if (cache
->nplanes
== 1)
418 ret
= meram_plane_alloc(priv
, &cache
->planes
[1],
419 cfg
->icb
[1].meram_size
);
421 meram_plane_free(priv
, &cache
->planes
[0]);
429 return ERR_PTR(-ENOMEM
);
432 static void *sh_mobile_cache_alloc(struct sh_mobile_meram_info
*pdata
,
433 const struct sh_mobile_meram_cfg
*cfg
,
434 unsigned int xres
, unsigned int yres
,
435 unsigned int pixelformat
,
438 struct sh_mobile_meram_fb_cache
*cache
;
439 struct sh_mobile_meram_priv
*priv
= pdata
->priv
;
440 struct platform_device
*pdev
= pdata
->pdev
;
441 unsigned int nplanes
= is_nvcolor(pixelformat
) ? 2 : 1;
442 unsigned int out_pitch
;
444 if (pixelformat
!= SH_MOBILE_MERAM_PF_NV
&&
445 pixelformat
!= SH_MOBILE_MERAM_PF_NV24
&&
446 pixelformat
!= SH_MOBILE_MERAM_PF_RGB
)
447 return ERR_PTR(-EINVAL
);
449 dev_dbg(&pdev
->dev
, "registering %dx%d (%s)", xres
, yres
,
450 !pixelformat
? "yuv" : "rgb");
452 /* we can't handle wider than 8192px */
454 dev_err(&pdev
->dev
, "width exceeding the limit (> 8192).");
455 return ERR_PTR(-EINVAL
);
458 if (cfg
->icb
[0].meram_size
== 0)
459 return ERR_PTR(-EINVAL
);
461 if (nplanes
== 2 && cfg
->icb
[1].meram_size
== 0)
462 return ERR_PTR(-EINVAL
);
464 mutex_lock(&priv
->lock
);
466 /* We now register the ICBs and allocate the MERAM regions. */
467 cache
= meram_cache_alloc(priv
, cfg
, pixelformat
);
469 dev_err(&pdev
->dev
, "MERAM allocation failed (%ld).",
474 /* initialize MERAM */
475 meram_plane_init(priv
, &cache
->planes
[0], xres
, yres
, &out_pitch
);
477 if (pixelformat
== SH_MOBILE_MERAM_PF_NV
)
478 meram_plane_init(priv
, &cache
->planes
[1],
479 xres
, (yres
+ 1) / 2, &out_pitch
);
480 else if (pixelformat
== SH_MOBILE_MERAM_PF_NV24
)
481 meram_plane_init(priv
, &cache
->planes
[1],
482 2 * xres
, (yres
+ 1) / 2, &out_pitch
);
485 mutex_unlock(&priv
->lock
);
490 sh_mobile_cache_free(struct sh_mobile_meram_info
*pdata
, void *data
)
492 struct sh_mobile_meram_fb_cache
*cache
= data
;
493 struct sh_mobile_meram_priv
*priv
= pdata
->priv
;
495 mutex_lock(&priv
->lock
);
497 /* Cleanup and free. */
498 meram_plane_cleanup(priv
, &cache
->planes
[0]);
499 meram_plane_free(priv
, &cache
->planes
[0]);
501 if (cache
->nplanes
== 2) {
502 meram_plane_cleanup(priv
, &cache
->planes
[1]);
503 meram_plane_free(priv
, &cache
->planes
[1]);
508 mutex_unlock(&priv
->lock
);
512 sh_mobile_cache_update(struct sh_mobile_meram_info
*pdata
, void *data
,
513 unsigned long base_addr_y
, unsigned long base_addr_c
,
514 unsigned long *icb_addr_y
, unsigned long *icb_addr_c
)
516 struct sh_mobile_meram_fb_cache
*cache
= data
;
517 struct sh_mobile_meram_priv
*priv
= pdata
->priv
;
519 mutex_lock(&priv
->lock
);
521 meram_set_next_addr(priv
, cache
, base_addr_y
, base_addr_c
);
522 meram_get_next_icb_addr(pdata
, cache
, icb_addr_y
, icb_addr_c
);
524 mutex_unlock(&priv
->lock
);
527 static struct sh_mobile_meram_ops sh_mobile_meram_ops
= {
528 .module
= THIS_MODULE
,
529 .cache_alloc
= sh_mobile_cache_alloc
,
530 .cache_free
= sh_mobile_cache_free
,
531 .cache_update
= sh_mobile_cache_update
,
534 /* -----------------------------------------------------------------------------
538 static int sh_mobile_meram_suspend(struct device
*dev
)
540 struct platform_device
*pdev
= to_platform_device(dev
);
541 struct sh_mobile_meram_priv
*priv
= platform_get_drvdata(pdev
);
544 for (i
= 0; i
< MERAM_REGS_SIZE
; i
++)
545 priv
->regs
[i
] = meram_read_reg(priv
->base
, common_regs
[i
]);
547 for (i
= 0; i
< 32; i
++) {
548 if (!test_bit(i
, &priv
->used_icb
))
550 for (j
= 0; j
< ICB_REGS_SIZE
; j
++) {
551 priv
->icbs
[i
].regs
[j
] =
552 meram_read_icb(priv
->base
, i
, icb_regs
[j
]);
553 /* Reset ICB on resume */
554 if (icb_regs
[j
] == MExxCTL
)
555 priv
->icbs
[i
].regs
[j
] |=
556 MExxCTL_WBF
| MExxCTL_WF
| MExxCTL_RF
;
562 static int sh_mobile_meram_resume(struct device
*dev
)
564 struct platform_device
*pdev
= to_platform_device(dev
);
565 struct sh_mobile_meram_priv
*priv
= platform_get_drvdata(pdev
);
568 for (i
= 0; i
< 32; i
++) {
569 if (!test_bit(i
, &priv
->used_icb
))
571 for (j
= 0; j
< ICB_REGS_SIZE
; j
++)
572 meram_write_icb(priv
->base
, i
, icb_regs
[j
],
573 priv
->icbs
[i
].regs
[j
]);
576 for (i
= 0; i
< MERAM_REGS_SIZE
; i
++)
577 meram_write_reg(priv
->base
, common_regs
[i
], priv
->regs
[i
]);
581 static UNIVERSAL_DEV_PM_OPS(sh_mobile_meram_dev_pm_ops
,
582 sh_mobile_meram_suspend
,
583 sh_mobile_meram_resume
, NULL
);
585 /* -----------------------------------------------------------------------------
586 * Probe/remove and driver init/exit
589 static int __devinit
sh_mobile_meram_probe(struct platform_device
*pdev
)
591 struct sh_mobile_meram_priv
*priv
;
592 struct sh_mobile_meram_info
*pdata
= pdev
->dev
.platform_data
;
593 struct resource
*regs
;
594 struct resource
*meram
;
599 dev_err(&pdev
->dev
, "no platform data defined\n");
603 regs
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
604 meram
= platform_get_resource(pdev
, IORESOURCE_MEM
, 1);
605 if (regs
== NULL
|| meram
== NULL
) {
606 dev_err(&pdev
->dev
, "cannot get platform resources\n");
610 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
612 dev_err(&pdev
->dev
, "cannot allocate device data\n");
616 /* Initialize private data. */
617 mutex_init(&priv
->lock
);
618 priv
->used_icb
= pdata
->reserved_icbs
;
620 for (i
= 0; i
< MERAM_ICB_NUM
; ++i
)
621 priv
->icbs
[i
].index
= i
;
623 pdata
->ops
= &sh_mobile_meram_ops
;
627 /* Request memory regions and remap the registers. */
628 if (!request_mem_region(regs
->start
, resource_size(regs
), pdev
->name
)) {
629 dev_err(&pdev
->dev
, "MERAM registers region already claimed\n");
634 if (!request_mem_region(meram
->start
, resource_size(meram
),
636 dev_err(&pdev
->dev
, "MERAM memory region already claimed\n");
641 priv
->base
= ioremap_nocache(regs
->start
, resource_size(regs
));
643 dev_err(&pdev
->dev
, "ioremap failed\n");
648 priv
->meram
= meram
->start
;
650 /* Create and initialize the MERAM memory pool. */
651 priv
->pool
= gen_pool_create(ilog2(MERAM_GRANULARITY
), -1);
652 if (priv
->pool
== NULL
) {
657 error
= gen_pool_add(priv
->pool
, meram
->start
, resource_size(meram
),
662 /* initialize ICB addressing mode */
663 if (pdata
->addr_mode
== SH_MOBILE_MERAM_MODE1
)
664 meram_write_reg(priv
->base
, MEVCR1
, MEVCR1_AMD1
);
666 platform_set_drvdata(pdev
, priv
);
667 pm_runtime_enable(&pdev
->dev
);
669 dev_info(&pdev
->dev
, "sh_mobile_meram initialized.");
675 gen_pool_destroy(priv
->pool
);
678 release_mem_region(meram
->start
, resource_size(meram
));
680 release_mem_region(regs
->start
, resource_size(regs
));
682 mutex_destroy(&priv
->lock
);
689 static int sh_mobile_meram_remove(struct platform_device
*pdev
)
691 struct sh_mobile_meram_priv
*priv
= platform_get_drvdata(pdev
);
692 struct resource
*regs
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
693 struct resource
*meram
= platform_get_resource(pdev
, IORESOURCE_MEM
, 1);
695 pm_runtime_disable(&pdev
->dev
);
697 gen_pool_destroy(priv
->pool
);
700 release_mem_region(meram
->start
, resource_size(meram
));
701 release_mem_region(regs
->start
, resource_size(regs
));
703 mutex_destroy(&priv
->lock
);
710 static struct platform_driver sh_mobile_meram_driver
= {
712 .name
= "sh_mobile_meram",
713 .owner
= THIS_MODULE
,
714 .pm
= &sh_mobile_meram_dev_pm_ops
,
716 .probe
= sh_mobile_meram_probe
,
717 .remove
= sh_mobile_meram_remove
,
720 module_platform_driver(sh_mobile_meram_driver
);
722 MODULE_DESCRIPTION("SuperH Mobile MERAM driver");
723 MODULE_AUTHOR("Damian Hobson-Garcia / Takanari Hayama");
724 MODULE_LICENSE("GPL v2");