2 * Copyright (C) 2012 Samsung Electronics Co.Ltd
3 * Authors: Joonyoung Shim <jy0922.shim@samsung.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundationr
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/clk.h>
13 #include <linux/err.h>
14 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm_runtime.h>
18 #include <linux/slab.h>
19 #include <linux/workqueue.h>
22 #include "exynos_drm.h"
23 #include "exynos_drm_drv.h"
24 #include "exynos_drm_gem.h"
26 #define G2D_HW_MAJOR_VER 4
27 #define G2D_HW_MINOR_VER 1
29 /* vaild register range set from user: 0x0104 ~ 0x0880 */
30 #define G2D_VALID_START 0x0104
31 #define G2D_VALID_END 0x0880
33 /* general registers */
34 #define G2D_SOFT_RESET 0x0000
35 #define G2D_INTEN 0x0004
36 #define G2D_INTC_PEND 0x000C
37 #define G2D_DMA_SFR_BASE_ADDR 0x0080
38 #define G2D_DMA_COMMAND 0x0084
39 #define G2D_DMA_STATUS 0x008C
40 #define G2D_DMA_HOLD_CMD 0x0090
42 /* command registers */
43 #define G2D_BITBLT_START 0x0100
45 /* registers for base address */
46 #define G2D_SRC_BASE_ADDR 0x0304
47 #define G2D_SRC_PLANE2_BASE_ADDR 0x0318
48 #define G2D_DST_BASE_ADDR 0x0404
49 #define G2D_DST_PLANE2_BASE_ADDR 0x0418
50 #define G2D_PAT_BASE_ADDR 0x0500
51 #define G2D_MSK_BASE_ADDR 0x0520
54 #define G2D_SFRCLEAR (1 << 1)
55 #define G2D_R (1 << 0)
58 #define G2D_INTEN_ACF (1 << 3)
59 #define G2D_INTEN_UCF (1 << 2)
60 #define G2D_INTEN_GCF (1 << 1)
61 #define G2D_INTEN_SCF (1 << 0)
64 #define G2D_INTP_ACMD_FIN (1 << 3)
65 #define G2D_INTP_UCMD_FIN (1 << 2)
66 #define G2D_INTP_GCMD_FIN (1 << 1)
67 #define G2D_INTP_SCMD_FIN (1 << 0)
70 #define G2D_DMA_HALT (1 << 2)
71 #define G2D_DMA_CONTINUE (1 << 1)
72 #define G2D_DMA_START (1 << 0)
75 #define G2D_DMA_LIST_DONE_COUNT (0xFF << 17)
76 #define G2D_DMA_BITBLT_DONE_COUNT (0xFFFF << 1)
77 #define G2D_DMA_DONE (1 << 0)
78 #define G2D_DMA_LIST_DONE_COUNT_OFFSET 17
80 /* G2D_DMA_HOLD_CMD */
81 #define G2D_USET_HOLD (1 << 2)
82 #define G2D_LIST_HOLD (1 << 1)
83 #define G2D_BITBLT_HOLD (1 << 0)
85 /* G2D_BITBLT_START */
86 #define G2D_START_CASESEL (1 << 2)
87 #define G2D_START_NHOLT (1 << 1)
88 #define G2D_START_BITBLT (1 << 0)
90 #define G2D_CMDLIST_SIZE (PAGE_SIZE / 4)
91 #define G2D_CMDLIST_NUM 64
92 #define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM)
93 #define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2)
95 /* cmdlist data structure */
98 u32 data
[G2D_CMDLIST_DATA_NUM
];
99 u32 last
; /* last data offset */
102 struct drm_exynos_pending_g2d_event
{
103 struct drm_pending_event base
;
104 struct drm_exynos_g2d_event event
;
107 struct g2d_gem_node
{
108 struct list_head list
;
112 struct g2d_cmdlist_node
{
113 struct list_head list
;
114 struct g2d_cmdlist
*cmdlist
;
118 struct drm_exynos_pending_g2d_event
*event
;
121 struct g2d_runqueue_node
{
122 struct list_head list
;
123 struct list_head run_cmdlist
;
124 struct list_head event_list
;
125 struct completion complete
;
131 struct clk
*gate_clk
;
134 struct workqueue_struct
*g2d_workq
;
135 struct work_struct runqueue_work
;
136 struct exynos_drm_subdrv subdrv
;
140 struct g2d_cmdlist_node
*cmdlist_node
;
141 struct list_head free_cmdlist
;
142 struct mutex cmdlist_mutex
;
143 dma_addr_t cmdlist_pool
;
144 void *cmdlist_pool_virt
;
147 struct g2d_runqueue_node
*runqueue_node
;
148 struct list_head runqueue
;
149 struct mutex runqueue_mutex
;
150 struct kmem_cache
*runqueue_slab
;
153 static int g2d_init_cmdlist(struct g2d_data
*g2d
)
155 struct device
*dev
= g2d
->dev
;
156 struct g2d_cmdlist_node
*node
= g2d
->cmdlist_node
;
160 g2d
->cmdlist_pool_virt
= dma_alloc_coherent(dev
, G2D_CMDLIST_POOL_SIZE
,
161 &g2d
->cmdlist_pool
, GFP_KERNEL
);
162 if (!g2d
->cmdlist_pool_virt
) {
163 dev_err(dev
, "failed to allocate dma memory\n");
167 node
= kcalloc(G2D_CMDLIST_NUM
, G2D_CMDLIST_NUM
* sizeof(*node
),
170 dev_err(dev
, "failed to allocate memory\n");
175 for (nr
= 0; nr
< G2D_CMDLIST_NUM
; nr
++) {
177 g2d
->cmdlist_pool_virt
+ nr
* G2D_CMDLIST_SIZE
;
179 g2d
->cmdlist_pool
+ nr
* G2D_CMDLIST_SIZE
;
181 list_add_tail(&node
[nr
].list
, &g2d
->free_cmdlist
);
187 dma_free_coherent(dev
, G2D_CMDLIST_POOL_SIZE
, g2d
->cmdlist_pool_virt
,
192 static void g2d_fini_cmdlist(struct g2d_data
*g2d
)
194 struct device
*dev
= g2d
->dev
;
196 kfree(g2d
->cmdlist_node
);
197 dma_free_coherent(dev
, G2D_CMDLIST_POOL_SIZE
, g2d
->cmdlist_pool_virt
,
201 static struct g2d_cmdlist_node
*g2d_get_cmdlist(struct g2d_data
*g2d
)
203 struct device
*dev
= g2d
->dev
;
204 struct g2d_cmdlist_node
*node
;
206 mutex_lock(&g2d
->cmdlist_mutex
);
207 if (list_empty(&g2d
->free_cmdlist
)) {
208 dev_err(dev
, "there is no free cmdlist\n");
209 mutex_unlock(&g2d
->cmdlist_mutex
);
213 node
= list_first_entry(&g2d
->free_cmdlist
, struct g2d_cmdlist_node
,
215 list_del_init(&node
->list
);
216 mutex_unlock(&g2d
->cmdlist_mutex
);
221 static void g2d_put_cmdlist(struct g2d_data
*g2d
, struct g2d_cmdlist_node
*node
)
223 mutex_lock(&g2d
->cmdlist_mutex
);
224 list_move_tail(&node
->list
, &g2d
->free_cmdlist
);
225 mutex_unlock(&g2d
->cmdlist_mutex
);
228 static void g2d_add_cmdlist_to_inuse(struct exynos_drm_g2d_private
*g2d_priv
,
229 struct g2d_cmdlist_node
*node
)
231 struct g2d_cmdlist_node
*lnode
;
233 if (list_empty(&g2d_priv
->inuse_cmdlist
))
236 /* this links to base address of new cmdlist */
237 lnode
= list_entry(g2d_priv
->inuse_cmdlist
.prev
,
238 struct g2d_cmdlist_node
, list
);
239 lnode
->cmdlist
->data
[lnode
->cmdlist
->last
] = node
->dma_addr
;
242 list_add_tail(&node
->list
, &g2d_priv
->inuse_cmdlist
);
245 list_add_tail(&node
->event
->base
.link
, &g2d_priv
->event_list
);
248 static int g2d_get_cmdlist_gem(struct drm_device
*drm_dev
,
249 struct drm_file
*file
,
250 struct g2d_cmdlist_node
*node
)
252 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
253 struct exynos_drm_g2d_private
*g2d_priv
= file_priv
->g2d_priv
;
254 struct g2d_cmdlist
*cmdlist
= node
->cmdlist
;
259 for (i
= 0; i
< node
->gem_nr
; i
++) {
260 struct g2d_gem_node
*gem_node
;
262 gem_node
= kzalloc(sizeof(*gem_node
), GFP_KERNEL
);
264 dev_err(g2d_priv
->dev
, "failed to allocate gem node\n");
268 offset
= cmdlist
->last
- (i
* 2 + 1);
269 gem_node
->handle
= cmdlist
->data
[offset
];
271 addr
= exynos_drm_gem_get_dma_addr(drm_dev
, gem_node
->handle
,
276 return PTR_ERR(addr
);
279 cmdlist
->data
[offset
] = *addr
;
280 list_add_tail(&gem_node
->list
, &g2d_priv
->gem_list
);
287 static void g2d_put_cmdlist_gem(struct drm_device
*drm_dev
,
288 struct drm_file
*file
,
291 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
292 struct exynos_drm_g2d_private
*g2d_priv
= file_priv
->g2d_priv
;
293 struct g2d_gem_node
*node
, *n
;
295 list_for_each_entry_safe_reverse(node
, n
, &g2d_priv
->gem_list
, list
) {
299 exynos_drm_gem_put_dma_addr(drm_dev
, node
->handle
, file
);
300 list_del_init(&node
->list
);
306 static void g2d_dma_start(struct g2d_data
*g2d
,
307 struct g2d_runqueue_node
*runqueue_node
)
309 struct g2d_cmdlist_node
*node
=
310 list_first_entry(&runqueue_node
->run_cmdlist
,
311 struct g2d_cmdlist_node
, list
);
313 pm_runtime_get_sync(g2d
->dev
);
314 clk_enable(g2d
->gate_clk
);
316 /* interrupt enable */
317 writel_relaxed(G2D_INTEN_ACF
| G2D_INTEN_UCF
| G2D_INTEN_GCF
,
318 g2d
->regs
+ G2D_INTEN
);
320 writel_relaxed(node
->dma_addr
, g2d
->regs
+ G2D_DMA_SFR_BASE_ADDR
);
321 writel_relaxed(G2D_DMA_START
, g2d
->regs
+ G2D_DMA_COMMAND
);
324 static struct g2d_runqueue_node
*g2d_get_runqueue_node(struct g2d_data
*g2d
)
326 struct g2d_runqueue_node
*runqueue_node
;
328 if (list_empty(&g2d
->runqueue
))
331 runqueue_node
= list_first_entry(&g2d
->runqueue
,
332 struct g2d_runqueue_node
, list
);
333 list_del_init(&runqueue_node
->list
);
334 return runqueue_node
;
337 static void g2d_free_runqueue_node(struct g2d_data
*g2d
,
338 struct g2d_runqueue_node
*runqueue_node
)
343 mutex_lock(&g2d
->cmdlist_mutex
);
344 list_splice_tail_init(&runqueue_node
->run_cmdlist
, &g2d
->free_cmdlist
);
345 mutex_unlock(&g2d
->cmdlist_mutex
);
347 kmem_cache_free(g2d
->runqueue_slab
, runqueue_node
);
350 static void g2d_exec_runqueue(struct g2d_data
*g2d
)
352 g2d
->runqueue_node
= g2d_get_runqueue_node(g2d
);
353 if (g2d
->runqueue_node
)
354 g2d_dma_start(g2d
, g2d
->runqueue_node
);
357 static void g2d_runqueue_worker(struct work_struct
*work
)
359 struct g2d_data
*g2d
= container_of(work
, struct g2d_data
,
363 mutex_lock(&g2d
->runqueue_mutex
);
364 clk_disable(g2d
->gate_clk
);
365 pm_runtime_put_sync(g2d
->dev
);
367 complete(&g2d
->runqueue_node
->complete
);
368 if (g2d
->runqueue_node
->async
)
369 g2d_free_runqueue_node(g2d
, g2d
->runqueue_node
);
372 g2d
->runqueue_node
= NULL
;
374 g2d_exec_runqueue(g2d
);
375 mutex_unlock(&g2d
->runqueue_mutex
);
378 static void g2d_finish_event(struct g2d_data
*g2d
, u32 cmdlist_no
)
380 struct drm_device
*drm_dev
= g2d
->subdrv
.drm_dev
;
381 struct g2d_runqueue_node
*runqueue_node
= g2d
->runqueue_node
;
382 struct drm_exynos_pending_g2d_event
*e
;
386 if (list_empty(&runqueue_node
->event_list
))
389 e
= list_first_entry(&runqueue_node
->event_list
,
390 struct drm_exynos_pending_g2d_event
, base
.link
);
392 do_gettimeofday(&now
);
393 e
->event
.tv_sec
= now
.tv_sec
;
394 e
->event
.tv_usec
= now
.tv_usec
;
395 e
->event
.cmdlist_no
= cmdlist_no
;
397 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
398 list_move_tail(&e
->base
.link
, &e
->base
.file_priv
->event_list
);
399 wake_up_interruptible(&e
->base
.file_priv
->event_wait
);
400 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
403 static irqreturn_t
g2d_irq_handler(int irq
, void *dev_id
)
405 struct g2d_data
*g2d
= dev_id
;
408 pending
= readl_relaxed(g2d
->regs
+ G2D_INTC_PEND
);
410 writel_relaxed(pending
, g2d
->regs
+ G2D_INTC_PEND
);
412 if (pending
& G2D_INTP_GCMD_FIN
) {
413 u32 cmdlist_no
= readl_relaxed(g2d
->regs
+ G2D_DMA_STATUS
);
415 cmdlist_no
= (cmdlist_no
& G2D_DMA_LIST_DONE_COUNT
) >>
416 G2D_DMA_LIST_DONE_COUNT_OFFSET
;
418 g2d_finish_event(g2d
, cmdlist_no
);
420 writel_relaxed(0, g2d
->regs
+ G2D_DMA_HOLD_CMD
);
421 if (!(pending
& G2D_INTP_ACMD_FIN
)) {
422 writel_relaxed(G2D_DMA_CONTINUE
,
423 g2d
->regs
+ G2D_DMA_COMMAND
);
427 if (pending
& G2D_INTP_ACMD_FIN
)
428 queue_work(g2d
->g2d_workq
, &g2d
->runqueue_work
);
433 static int g2d_check_reg_offset(struct device
*dev
, struct g2d_cmdlist
*cmdlist
,
434 int nr
, bool for_addr
)
440 for (i
= 0; i
< nr
; i
++) {
441 index
= cmdlist
->last
- 2 * (i
+ 1);
442 reg_offset
= cmdlist
->data
[index
] & ~0xfffff000;
444 if (reg_offset
< G2D_VALID_START
|| reg_offset
> G2D_VALID_END
)
449 switch (reg_offset
) {
450 case G2D_SRC_BASE_ADDR
:
451 case G2D_SRC_PLANE2_BASE_ADDR
:
452 case G2D_DST_BASE_ADDR
:
453 case G2D_DST_PLANE2_BASE_ADDR
:
454 case G2D_PAT_BASE_ADDR
:
455 case G2D_MSK_BASE_ADDR
:
469 dev_err(dev
, "Bad register offset: 0x%x\n", cmdlist
->data
[index
]);
473 /* ioctl functions */
474 int exynos_g2d_get_ver_ioctl(struct drm_device
*drm_dev
, void *data
,
475 struct drm_file
*file
)
477 struct drm_exynos_g2d_get_ver
*ver
= data
;
479 ver
->major
= G2D_HW_MAJOR_VER
;
480 ver
->minor
= G2D_HW_MINOR_VER
;
484 EXPORT_SYMBOL_GPL(exynos_g2d_get_ver_ioctl
);
486 int exynos_g2d_set_cmdlist_ioctl(struct drm_device
*drm_dev
, void *data
,
487 struct drm_file
*file
)
489 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
490 struct exynos_drm_g2d_private
*g2d_priv
= file_priv
->g2d_priv
;
491 struct device
*dev
= g2d_priv
->dev
;
492 struct g2d_data
*g2d
;
493 struct drm_exynos_g2d_set_cmdlist
*req
= data
;
494 struct drm_exynos_g2d_cmd
*cmd
;
495 struct drm_exynos_pending_g2d_event
*e
;
496 struct g2d_cmdlist_node
*node
;
497 struct g2d_cmdlist
*cmdlist
;
505 g2d
= dev_get_drvdata(dev
);
509 node
= g2d_get_cmdlist(g2d
);
515 if (req
->event_type
!= G2D_EVENT_NOT
) {
516 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
517 if (file
->event_space
< sizeof(e
->event
)) {
518 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
522 file
->event_space
-= sizeof(e
->event
);
523 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
525 e
= kzalloc(sizeof(*node
->event
), GFP_KERNEL
);
527 dev_err(dev
, "failed to allocate event\n");
529 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
530 file
->event_space
+= sizeof(e
->event
);
531 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
537 e
->event
.base
.type
= DRM_EXYNOS_G2D_EVENT
;
538 e
->event
.base
.length
= sizeof(e
->event
);
539 e
->event
.user_data
= req
->user_data
;
540 e
->base
.event
= &e
->event
.base
;
541 e
->base
.file_priv
= file
;
542 e
->base
.destroy
= (void (*) (struct drm_pending_event
*)) kfree
;
547 cmdlist
= node
->cmdlist
;
552 * If don't clear SFR registers, the cmdlist is affected by register
553 * values of previous cmdlist. G2D hw executes SFR clear command and
554 * a next command at the same time then the next command is ignored and
555 * is executed rightly from next next command, so needs a dummy command
556 * to next command of SFR clear command.
558 cmdlist
->data
[cmdlist
->last
++] = G2D_SOFT_RESET
;
559 cmdlist
->data
[cmdlist
->last
++] = G2D_SFRCLEAR
;
560 cmdlist
->data
[cmdlist
->last
++] = G2D_SRC_BASE_ADDR
;
561 cmdlist
->data
[cmdlist
->last
++] = 0;
564 cmdlist
->data
[cmdlist
->last
++] = G2D_DMA_HOLD_CMD
;
565 cmdlist
->data
[cmdlist
->last
++] = G2D_LIST_HOLD
;
568 /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */
569 size
= cmdlist
->last
+ req
->cmd_nr
* 2 + req
->cmd_gem_nr
* 2 + 2;
570 if (size
> G2D_CMDLIST_DATA_NUM
) {
571 dev_err(dev
, "cmdlist size is too big\n");
576 cmd
= (struct drm_exynos_g2d_cmd
*)(uint32_t)req
->cmd
;
578 if (copy_from_user(cmdlist
->data
+ cmdlist
->last
,
580 sizeof(*cmd
) * req
->cmd_nr
)) {
584 cmdlist
->last
+= req
->cmd_nr
* 2;
586 ret
= g2d_check_reg_offset(dev
, cmdlist
, req
->cmd_nr
, false);
590 node
->gem_nr
= req
->cmd_gem_nr
;
591 if (req
->cmd_gem_nr
) {
592 struct drm_exynos_g2d_cmd
*cmd_gem
;
594 cmd_gem
= (struct drm_exynos_g2d_cmd
*)(uint32_t)req
->cmd_gem
;
596 if (copy_from_user(cmdlist
->data
+ cmdlist
->last
,
597 (void __user
*)cmd_gem
,
598 sizeof(*cmd_gem
) * req
->cmd_gem_nr
)) {
602 cmdlist
->last
+= req
->cmd_gem_nr
* 2;
604 ret
= g2d_check_reg_offset(dev
, cmdlist
, req
->cmd_gem_nr
, true);
608 ret
= g2d_get_cmdlist_gem(drm_dev
, file
, node
);
613 cmdlist
->data
[cmdlist
->last
++] = G2D_BITBLT_START
;
614 cmdlist
->data
[cmdlist
->last
++] = G2D_START_BITBLT
;
617 cmdlist
->head
= cmdlist
->last
/ 2;
620 cmdlist
->data
[cmdlist
->last
] = 0;
622 g2d_add_cmdlist_to_inuse(g2d_priv
, node
);
627 g2d_put_cmdlist_gem(drm_dev
, file
, node
->gem_nr
);
630 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
631 file
->event_space
+= sizeof(e
->event
);
632 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
636 g2d_put_cmdlist(g2d
, node
);
639 EXPORT_SYMBOL_GPL(exynos_g2d_set_cmdlist_ioctl
);
641 int exynos_g2d_exec_ioctl(struct drm_device
*drm_dev
, void *data
,
642 struct drm_file
*file
)
644 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
645 struct exynos_drm_g2d_private
*g2d_priv
= file_priv
->g2d_priv
;
646 struct device
*dev
= g2d_priv
->dev
;
647 struct g2d_data
*g2d
;
648 struct drm_exynos_g2d_exec
*req
= data
;
649 struct g2d_runqueue_node
*runqueue_node
;
650 struct list_head
*run_cmdlist
;
651 struct list_head
*event_list
;
656 g2d
= dev_get_drvdata(dev
);
660 runqueue_node
= kmem_cache_alloc(g2d
->runqueue_slab
, GFP_KERNEL
);
661 if (!runqueue_node
) {
662 dev_err(dev
, "failed to allocate memory\n");
665 run_cmdlist
= &runqueue_node
->run_cmdlist
;
666 event_list
= &runqueue_node
->event_list
;
667 INIT_LIST_HEAD(run_cmdlist
);
668 INIT_LIST_HEAD(event_list
);
669 init_completion(&runqueue_node
->complete
);
670 runqueue_node
->async
= req
->async
;
672 list_splice_init(&g2d_priv
->inuse_cmdlist
, run_cmdlist
);
673 list_splice_init(&g2d_priv
->event_list
, event_list
);
675 if (list_empty(run_cmdlist
)) {
676 dev_err(dev
, "there is no inuse cmdlist\n");
677 kmem_cache_free(g2d
->runqueue_slab
, runqueue_node
);
681 mutex_lock(&g2d
->runqueue_mutex
);
682 list_add_tail(&runqueue_node
->list
, &g2d
->runqueue
);
683 if (!g2d
->runqueue_node
)
684 g2d_exec_runqueue(g2d
);
685 mutex_unlock(&g2d
->runqueue_mutex
);
687 if (runqueue_node
->async
)
690 wait_for_completion(&runqueue_node
->complete
);
691 g2d_free_runqueue_node(g2d
, runqueue_node
);
696 EXPORT_SYMBOL_GPL(exynos_g2d_exec_ioctl
);
698 static int g2d_open(struct drm_device
*drm_dev
, struct device
*dev
,
699 struct drm_file
*file
)
701 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
702 struct exynos_drm_g2d_private
*g2d_priv
;
704 g2d_priv
= kzalloc(sizeof(*g2d_priv
), GFP_KERNEL
);
706 dev_err(dev
, "failed to allocate g2d private data\n");
711 file_priv
->g2d_priv
= g2d_priv
;
713 INIT_LIST_HEAD(&g2d_priv
->inuse_cmdlist
);
714 INIT_LIST_HEAD(&g2d_priv
->event_list
);
715 INIT_LIST_HEAD(&g2d_priv
->gem_list
);
720 static void g2d_close(struct drm_device
*drm_dev
, struct device
*dev
,
721 struct drm_file
*file
)
723 struct drm_exynos_file_private
*file_priv
= file
->driver_priv
;
724 struct exynos_drm_g2d_private
*g2d_priv
= file_priv
->g2d_priv
;
725 struct g2d_data
*g2d
;
726 struct g2d_cmdlist_node
*node
, *n
;
731 g2d
= dev_get_drvdata(dev
);
735 mutex_lock(&g2d
->cmdlist_mutex
);
736 list_for_each_entry_safe(node
, n
, &g2d_priv
->inuse_cmdlist
, list
)
737 list_move_tail(&node
->list
, &g2d
->free_cmdlist
);
738 mutex_unlock(&g2d
->cmdlist_mutex
);
740 g2d_put_cmdlist_gem(drm_dev
, file
, g2d_priv
->gem_nr
);
742 kfree(file_priv
->g2d_priv
);
745 static int __devinit
g2d_probe(struct platform_device
*pdev
)
747 struct device
*dev
= &pdev
->dev
;
748 struct resource
*res
;
749 struct g2d_data
*g2d
;
750 struct exynos_drm_subdrv
*subdrv
;
753 g2d
= devm_kzalloc(&pdev
->dev
, sizeof(*g2d
), GFP_KERNEL
);
755 dev_err(dev
, "failed to allocate driver data\n");
759 g2d
->runqueue_slab
= kmem_cache_create("g2d_runqueue_slab",
760 sizeof(struct g2d_runqueue_node
), 0, 0, NULL
);
761 if (!g2d
->runqueue_slab
)
766 g2d
->g2d_workq
= create_singlethread_workqueue("g2d");
767 if (!g2d
->g2d_workq
) {
768 dev_err(dev
, "failed to create workqueue\n");
770 goto err_destroy_slab
;
773 INIT_WORK(&g2d
->runqueue_work
, g2d_runqueue_worker
);
774 INIT_LIST_HEAD(&g2d
->free_cmdlist
);
775 INIT_LIST_HEAD(&g2d
->runqueue
);
777 mutex_init(&g2d
->cmdlist_mutex
);
778 mutex_init(&g2d
->runqueue_mutex
);
780 ret
= g2d_init_cmdlist(g2d
);
782 goto err_destroy_workqueue
;
784 g2d
->gate_clk
= clk_get(dev
, "fimg2d");
785 if (IS_ERR(g2d
->gate_clk
)) {
786 dev_err(dev
, "failed to get gate clock\n");
787 ret
= PTR_ERR(g2d
->gate_clk
);
788 goto err_fini_cmdlist
;
791 pm_runtime_enable(dev
);
793 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
795 g2d
->regs
= devm_request_and_ioremap(&pdev
->dev
, res
);
797 dev_err(dev
, "failed to remap I/O memory\n");
802 g2d
->irq
= platform_get_irq(pdev
, 0);
804 dev_err(dev
, "failed to get irq\n");
809 ret
= devm_request_irq(&pdev
->dev
, g2d
->irq
, g2d_irq_handler
, 0,
812 dev_err(dev
, "irq request failed\n");
816 platform_set_drvdata(pdev
, g2d
);
818 subdrv
= &g2d
->subdrv
;
820 subdrv
->open
= g2d_open
;
821 subdrv
->close
= g2d_close
;
823 ret
= exynos_drm_subdrv_register(subdrv
);
825 dev_err(dev
, "failed to register drm g2d device\n");
829 dev_info(dev
, "The exynos g2d(ver %d.%d) successfully probed\n",
830 G2D_HW_MAJOR_VER
, G2D_HW_MINOR_VER
);
835 pm_runtime_disable(dev
);
836 clk_put(g2d
->gate_clk
);
838 g2d_fini_cmdlist(g2d
);
839 err_destroy_workqueue
:
840 destroy_workqueue(g2d
->g2d_workq
);
842 kmem_cache_destroy(g2d
->runqueue_slab
);
846 static int __devexit
g2d_remove(struct platform_device
*pdev
)
848 struct g2d_data
*g2d
= platform_get_drvdata(pdev
);
850 cancel_work_sync(&g2d
->runqueue_work
);
851 exynos_drm_subdrv_unregister(&g2d
->subdrv
);
853 while (g2d
->runqueue_node
) {
854 g2d_free_runqueue_node(g2d
, g2d
->runqueue_node
);
855 g2d
->runqueue_node
= g2d_get_runqueue_node(g2d
);
858 pm_runtime_disable(&pdev
->dev
);
859 clk_put(g2d
->gate_clk
);
861 g2d_fini_cmdlist(g2d
);
862 destroy_workqueue(g2d
->g2d_workq
);
863 kmem_cache_destroy(g2d
->runqueue_slab
);
868 #ifdef CONFIG_PM_SLEEP
869 static int g2d_suspend(struct device
*dev
)
871 struct g2d_data
*g2d
= dev_get_drvdata(dev
);
873 mutex_lock(&g2d
->runqueue_mutex
);
874 g2d
->suspended
= true;
875 mutex_unlock(&g2d
->runqueue_mutex
);
877 while (g2d
->runqueue_node
)
878 /* FIXME: good range? */
879 usleep_range(500, 1000);
881 flush_work_sync(&g2d
->runqueue_work
);
886 static int g2d_resume(struct device
*dev
)
888 struct g2d_data
*g2d
= dev_get_drvdata(dev
);
890 g2d
->suspended
= false;
891 g2d_exec_runqueue(g2d
);
897 static SIMPLE_DEV_PM_OPS(g2d_pm_ops
, g2d_suspend
, g2d_resume
);
899 struct platform_driver g2d_driver
= {
901 .remove
= __devexit_p(g2d_remove
),
904 .owner
= THIS_MODULE
,