blob: 2ce67f5a48d50f0d65eb8f09950818ee39cb7fad [file] [log] [blame]
Sakari Ailus39aee692008-12-01 15:40:09 -03001/*
2 * drivers/media/video/omap24xxcam.h
3 *
4 * Copyright (C) 2004 MontaVista Software, Inc.
5 * Copyright (C) 2004 Texas Instruments.
6 * Copyright (C) 2007 Nokia Corporation.
7 *
8 * Contact: Sakari Ailus <sakari.ailus@nokia.com>
9 *
10 * Based on code from Andy Lowe <source@mvista.com>.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * version 2 as published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#ifndef OMAP24XXCAM_H
28#define OMAP24XXCAM_H
29
30#include <media/videobuf-dma-sg.h>
31#include <media/v4l2-int-device.h>
32
33/*
34 *
35 * General driver related definitions.
36 *
37 */
38
39#define CAM_NAME "omap24xxcam"
40
41#define CAM_MCLK 96000000
42
43/* number of bytes transferred per DMA request */
44#define DMA_THRESHOLD 32
45
46/*
47 * NUM_CAMDMA_CHANNELS is the number of logical channels provided by
48 * the camera DMA controller.
49 */
50#define NUM_CAMDMA_CHANNELS 4
51
52/*
53 * NUM_SG_DMA is the number of scatter-gather DMA transfers that can
54 * be queued. (We don't have any overlay sglists now.)
55 */
56#define NUM_SG_DMA (VIDEO_MAX_FRAME)
57
58/*
59 *
60 * Register definitions.
61 *
62 */
63
64/* subsystem register block offsets */
65#define CC_REG_OFFSET 0x00000400
66#define CAMDMA_REG_OFFSET 0x00000800
67#define CAMMMU_REG_OFFSET 0x00000C00
68
69/* define camera subsystem register offsets */
70#define CAM_REVISION 0x000
71#define CAM_SYSCONFIG 0x010
72#define CAM_SYSSTATUS 0x014
73#define CAM_IRQSTATUS 0x018
74#define CAM_GPO 0x040
75#define CAM_GPI 0x050
76
77/* define camera core register offsets */
78#define CC_REVISION 0x000
79#define CC_SYSCONFIG 0x010
80#define CC_SYSSTATUS 0x014
81#define CC_IRQSTATUS 0x018
82#define CC_IRQENABLE 0x01C
83#define CC_CTRL 0x040
84#define CC_CTRL_DMA 0x044
85#define CC_CTRL_XCLK 0x048
86#define CC_FIFODATA 0x04C
87#define CC_TEST 0x050
88#define CC_GENPAR 0x054
89#define CC_CCPFSCR 0x058
90#define CC_CCPFECR 0x05C
91#define CC_CCPLSCR 0x060
92#define CC_CCPLECR 0x064
93#define CC_CCPDFR 0x068
94
95/* define camera dma register offsets */
96#define CAMDMA_REVISION 0x000
97#define CAMDMA_IRQSTATUS_L0 0x008
98#define CAMDMA_IRQSTATUS_L1 0x00C
99#define CAMDMA_IRQSTATUS_L2 0x010
100#define CAMDMA_IRQSTATUS_L3 0x014
101#define CAMDMA_IRQENABLE_L0 0x018
102#define CAMDMA_IRQENABLE_L1 0x01C
103#define CAMDMA_IRQENABLE_L2 0x020
104#define CAMDMA_IRQENABLE_L3 0x024
105#define CAMDMA_SYSSTATUS 0x028
106#define CAMDMA_OCP_SYSCONFIG 0x02C
107#define CAMDMA_CAPS_0 0x064
108#define CAMDMA_CAPS_2 0x06C
109#define CAMDMA_CAPS_3 0x070
110#define CAMDMA_CAPS_4 0x074
111#define CAMDMA_GCR 0x078
112#define CAMDMA_CCR(n) (0x080 + (n)*0x60)
113#define CAMDMA_CLNK_CTRL(n) (0x084 + (n)*0x60)
114#define CAMDMA_CICR(n) (0x088 + (n)*0x60)
115#define CAMDMA_CSR(n) (0x08C + (n)*0x60)
116#define CAMDMA_CSDP(n) (0x090 + (n)*0x60)
117#define CAMDMA_CEN(n) (0x094 + (n)*0x60)
118#define CAMDMA_CFN(n) (0x098 + (n)*0x60)
119#define CAMDMA_CSSA(n) (0x09C + (n)*0x60)
120#define CAMDMA_CDSA(n) (0x0A0 + (n)*0x60)
121#define CAMDMA_CSEI(n) (0x0A4 + (n)*0x60)
122#define CAMDMA_CSFI(n) (0x0A8 + (n)*0x60)
123#define CAMDMA_CDEI(n) (0x0AC + (n)*0x60)
124#define CAMDMA_CDFI(n) (0x0B0 + (n)*0x60)
125#define CAMDMA_CSAC(n) (0x0B4 + (n)*0x60)
126#define CAMDMA_CDAC(n) (0x0B8 + (n)*0x60)
127#define CAMDMA_CCEN(n) (0x0BC + (n)*0x60)
128#define CAMDMA_CCFN(n) (0x0C0 + (n)*0x60)
129#define CAMDMA_COLOR(n) (0x0C4 + (n)*0x60)
130
131/* define camera mmu register offsets */
132#define CAMMMU_REVISION 0x000
133#define CAMMMU_SYSCONFIG 0x010
134#define CAMMMU_SYSSTATUS 0x014
135#define CAMMMU_IRQSTATUS 0x018
136#define CAMMMU_IRQENABLE 0x01C
137#define CAMMMU_WALKING_ST 0x040
138#define CAMMMU_CNTL 0x044
139#define CAMMMU_FAULT_AD 0x048
140#define CAMMMU_TTB 0x04C
141#define CAMMMU_LOCK 0x050
142#define CAMMMU_LD_TLB 0x054
143#define CAMMMU_CAM 0x058
144#define CAMMMU_RAM 0x05C
145#define CAMMMU_GFLUSH 0x060
146#define CAMMMU_FLUSH_ENTRY 0x064
147#define CAMMMU_READ_CAM 0x068
148#define CAMMMU_READ_RAM 0x06C
149#define CAMMMU_EMU_FAULT_AD 0x070
150
151/* Define bit fields within selected registers */
152#define CAM_REVISION_MAJOR (15 << 4)
153#define CAM_REVISION_MAJOR_SHIFT 4
154#define CAM_REVISION_MINOR (15 << 0)
155#define CAM_REVISION_MINOR_SHIFT 0
156
157#define CAM_SYSCONFIG_SOFTRESET (1 << 1)
158#define CAM_SYSCONFIG_AUTOIDLE (1 << 0)
159
160#define CAM_SYSSTATUS_RESETDONE (1 << 0)
161
162#define CAM_IRQSTATUS_CC_IRQ (1 << 4)
163#define CAM_IRQSTATUS_MMU_IRQ (1 << 3)
164#define CAM_IRQSTATUS_DMA_IRQ2 (1 << 2)
165#define CAM_IRQSTATUS_DMA_IRQ1 (1 << 1)
166#define CAM_IRQSTATUS_DMA_IRQ0 (1 << 0)
167
168#define CAM_GPO_CAM_S_P_EN (1 << 1)
169#define CAM_GPO_CAM_CCP_MODE (1 << 0)
170
171#define CAM_GPI_CC_DMA_REQ1 (1 << 24)
172#define CAP_GPI_CC_DMA_REQ0 (1 << 23)
173#define CAP_GPI_CAM_MSTANDBY (1 << 21)
174#define CAP_GPI_CAM_WAIT (1 << 20)
175#define CAP_GPI_CAM_S_DATA (1 << 17)
176#define CAP_GPI_CAM_S_CLK (1 << 16)
177#define CAP_GPI_CAM_P_DATA (0xFFF << 3)
178#define CAP_GPI_CAM_P_DATA_SHIFT 3
179#define CAP_GPI_CAM_P_VS (1 << 2)
180#define CAP_GPI_CAM_P_HS (1 << 1)
181#define CAP_GPI_CAM_P_CLK (1 << 0)
182
183#define CC_REVISION_MAJOR (15 << 4)
184#define CC_REVISION_MAJOR_SHIFT 4
185#define CC_REVISION_MINOR (15 << 0)
186#define CC_REVISION_MINOR_SHIFT 0
187
188#define CC_SYSCONFIG_SIDLEMODE (3 << 3)
189#define CC_SYSCONFIG_SIDLEMODE_FIDLE (0 << 3)
190#define CC_SYSCONFIG_SIDLEMODE_NIDLE (1 << 3)
191#define CC_SYSCONFIG_SOFTRESET (1 << 1)
192#define CC_SYSCONFIG_AUTOIDLE (1 << 0)
193
194#define CC_SYSSTATUS_RESETDONE (1 << 0)
195
196#define CC_IRQSTATUS_FS_IRQ (1 << 19)
197#define CC_IRQSTATUS_LE_IRQ (1 << 18)
198#define CC_IRQSTATUS_LS_IRQ (1 << 17)
199#define CC_IRQSTATUS_FE_IRQ (1 << 16)
200#define CC_IRQSTATUS_FW_ERR_IRQ (1 << 10)
201#define CC_IRQSTATUS_FSC_ERR_IRQ (1 << 9)
202#define CC_IRQSTATUS_SSC_ERR_IRQ (1 << 8)
203#define CC_IRQSTATUS_FIFO_NOEMPTY_IRQ (1 << 4)
204#define CC_IRQSTATUS_FIFO_FULL_IRQ (1 << 3)
205#define CC_IRQSTATUS_FIFO_THR_IRQ (1 << 2)
206#define CC_IRQSTATUS_FIFO_OF_IRQ (1 << 1)
207#define CC_IRQSTATUS_FIFO_UF_IRQ (1 << 0)
208
209#define CC_IRQENABLE_FS_IRQ (1 << 19)
210#define CC_IRQENABLE_LE_IRQ (1 << 18)
211#define CC_IRQENABLE_LS_IRQ (1 << 17)
212#define CC_IRQENABLE_FE_IRQ (1 << 16)
213#define CC_IRQENABLE_FW_ERR_IRQ (1 << 10)
214#define CC_IRQENABLE_FSC_ERR_IRQ (1 << 9)
215#define CC_IRQENABLE_SSC_ERR_IRQ (1 << 8)
216#define CC_IRQENABLE_FIFO_NOEMPTY_IRQ (1 << 4)
217#define CC_IRQENABLE_FIFO_FULL_IRQ (1 << 3)
218#define CC_IRQENABLE_FIFO_THR_IRQ (1 << 2)
219#define CC_IRQENABLE_FIFO_OF_IRQ (1 << 1)
220#define CC_IRQENABLE_FIFO_UF_IRQ (1 << 0)
221
222#define CC_CTRL_CC_ONE_SHOT (1 << 20)
223#define CC_CTRL_CC_IF_SYNCHRO (1 << 19)
224#define CC_CTRL_CC_RST (1 << 18)
225#define CC_CTRL_CC_FRAME_TRIG (1 << 17)
226#define CC_CTRL_CC_EN (1 << 16)
227#define CC_CTRL_NOBT_SYNCHRO (1 << 13)
228#define CC_CTRL_BT_CORRECT (1 << 12)
229#define CC_CTRL_PAR_ORDERCAM (1 << 11)
230#define CC_CTRL_PAR_CLK_POL (1 << 10)
231#define CC_CTRL_NOBT_HS_POL (1 << 9)
232#define CC_CTRL_NOBT_VS_POL (1 << 8)
233#define CC_CTRL_PAR_MODE (7 << 1)
234#define CC_CTRL_PAR_MODE_SHIFT 1
235#define CC_CTRL_PAR_MODE_NOBT8 (0 << 1)
236#define CC_CTRL_PAR_MODE_NOBT10 (1 << 1)
237#define CC_CTRL_PAR_MODE_NOBT12 (2 << 1)
238#define CC_CTRL_PAR_MODE_BT8 (4 << 1)
239#define CC_CTRL_PAR_MODE_BT10 (5 << 1)
240#define CC_CTRL_PAR_MODE_FIFOTEST (7 << 1)
241#define CC_CTRL_CCP_MODE (1 << 0)
242
243#define CC_CTRL_DMA_EN (1 << 8)
244#define CC_CTRL_DMA_FIFO_THRESHOLD (0x7F << 0)
245#define CC_CTRL_DMA_FIFO_THRESHOLD_SHIFT 0
246
247#define CC_CTRL_XCLK_DIV (0x1F << 0)
248#define CC_CTRL_XCLK_DIV_SHIFT 0
249#define CC_CTRL_XCLK_DIV_STABLE_LOW (0 << 0)
250#define CC_CTRL_XCLK_DIV_STABLE_HIGH (1 << 0)
251#define CC_CTRL_XCLK_DIV_BYPASS (31 << 0)
252
253#define CC_TEST_FIFO_RD_POINTER (0xFF << 24)
254#define CC_TEST_FIFO_RD_POINTER_SHIFT 24
255#define CC_TEST_FIFO_WR_POINTER (0xFF << 16)
256#define CC_TEST_FIFO_WR_POINTER_SHIFT 16
257#define CC_TEST_FIFO_LEVEL (0xFF << 8)
258#define CC_TEST_FIFO_LEVEL_SHIFT 8
259#define CC_TEST_FIFO_LEVEL_PEAK (0xFF << 0)
260#define CC_TEST_FIFO_LEVEL_PEAK_SHIFT 0
261
262#define CC_GENPAR_FIFO_DEPTH (7 << 0)
263#define CC_GENPAR_FIFO_DEPTH_SHIFT 0
264
265#define CC_CCPDFR_ALPHA (0xFF << 8)
266#define CC_CCPDFR_ALPHA_SHIFT 8
267#define CC_CCPDFR_DATAFORMAT (15 << 0)
268#define CC_CCPDFR_DATAFORMAT_SHIFT 0
269#define CC_CCPDFR_DATAFORMAT_YUV422BE (0 << 0)
270#define CC_CCPDFR_DATAFORMAT_YUV422 (1 << 0)
271#define CC_CCPDFR_DATAFORMAT_YUV420 (2 << 0)
272#define CC_CCPDFR_DATAFORMAT_RGB444 (4 << 0)
273#define CC_CCPDFR_DATAFORMAT_RGB565 (5 << 0)
274#define CC_CCPDFR_DATAFORMAT_RGB888NDE (6 << 0)
275#define CC_CCPDFR_DATAFORMAT_RGB888 (7 << 0)
276#define CC_CCPDFR_DATAFORMAT_RAW8NDE (8 << 0)
277#define CC_CCPDFR_DATAFORMAT_RAW8 (9 << 0)
278#define CC_CCPDFR_DATAFORMAT_RAW10NDE (10 << 0)
279#define CC_CCPDFR_DATAFORMAT_RAW10 (11 << 0)
280#define CC_CCPDFR_DATAFORMAT_RAW12NDE (12 << 0)
281#define CC_CCPDFR_DATAFORMAT_RAW12 (13 << 0)
282#define CC_CCPDFR_DATAFORMAT_JPEG8 (15 << 0)
283
284#define CAMDMA_REVISION_MAJOR (15 << 4)
285#define CAMDMA_REVISION_MAJOR_SHIFT 4
286#define CAMDMA_REVISION_MINOR (15 << 0)
287#define CAMDMA_REVISION_MINOR_SHIFT 0
288
289#define CAMDMA_OCP_SYSCONFIG_MIDLEMODE (3 << 12)
290#define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_FSTANDBY (0 << 12)
291#define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_NSTANDBY (1 << 12)
292#define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_SSTANDBY (2 << 12)
293#define CAMDMA_OCP_SYSCONFIG_FUNC_CLOCK (1 << 9)
294#define CAMDMA_OCP_SYSCONFIG_OCP_CLOCK (1 << 8)
295#define CAMDMA_OCP_SYSCONFIG_EMUFREE (1 << 5)
296#define CAMDMA_OCP_SYSCONFIG_SIDLEMODE (3 << 3)
297#define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_FIDLE (0 << 3)
298#define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_NIDLE (1 << 3)
299#define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_SIDLE (2 << 3)
300#define CAMDMA_OCP_SYSCONFIG_SOFTRESET (1 << 1)
301#define CAMDMA_OCP_SYSCONFIG_AUTOIDLE (1 << 0)
302
303#define CAMDMA_SYSSTATUS_RESETDONE (1 << 0)
304
305#define CAMDMA_GCR_ARBITRATION_RATE (0xFF << 16)
306#define CAMDMA_GCR_ARBITRATION_RATE_SHIFT 16
307#define CAMDMA_GCR_MAX_CHANNEL_FIFO_DEPTH (0xFF << 0)
308#define CAMDMA_GCR_MAX_CHANNEL_FIFO_DEPTH_SHIFT 0
309
310#define CAMDMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
311#define CAMDMA_CCR_PREFETCH (1 << 23)
312#define CAMDMA_CCR_SUPERVISOR (1 << 22)
313#define CAMDMA_CCR_SECURE (1 << 21)
314#define CAMDMA_CCR_BS (1 << 18)
315#define CAMDMA_CCR_TRANSPARENT_COPY_ENABLE (1 << 17)
316#define CAMDMA_CCR_CONSTANT_FILL_ENABLE (1 << 16)
317#define CAMDMA_CCR_DST_AMODE (3 << 14)
318#define CAMDMA_CCR_DST_AMODE_CONST_ADDR (0 << 14)
319#define CAMDMA_CCR_DST_AMODE_POST_INC (1 << 14)
320#define CAMDMA_CCR_DST_AMODE_SGL_IDX (2 << 14)
321#define CAMDMA_CCR_DST_AMODE_DBL_IDX (3 << 14)
322#define CAMDMA_CCR_SRC_AMODE (3 << 12)
323#define CAMDMA_CCR_SRC_AMODE_CONST_ADDR (0 << 12)
324#define CAMDMA_CCR_SRC_AMODE_POST_INC (1 << 12)
325#define CAMDMA_CCR_SRC_AMODE_SGL_IDX (2 << 12)
326#define CAMDMA_CCR_SRC_AMODE_DBL_IDX (3 << 12)
327#define CAMDMA_CCR_WR_ACTIVE (1 << 10)
328#define CAMDMA_CCR_RD_ACTIVE (1 << 9)
329#define CAMDMA_CCR_SUSPEND_SENSITIVE (1 << 8)
330#define CAMDMA_CCR_ENABLE (1 << 7)
331#define CAMDMA_CCR_PRIO (1 << 6)
332#define CAMDMA_CCR_FS (1 << 5)
333#define CAMDMA_CCR_SYNCHRO ((3 << 19) | (31 << 0))
334#define CAMDMA_CCR_SYNCHRO_CAMERA 0x01
335
336#define CAMDMA_CLNK_CTRL_ENABLE_LNK (1 << 15)
337#define CAMDMA_CLNK_CTRL_NEXTLCH_ID (0x1F << 0)
338#define CAMDMA_CLNK_CTRL_NEXTLCH_ID_SHIFT 0
339
340#define CAMDMA_CICR_MISALIGNED_ERR_IE (1 << 11)
341#define CAMDMA_CICR_SUPERVISOR_ERR_IE (1 << 10)
342#define CAMDMA_CICR_SECURE_ERR_IE (1 << 9)
343#define CAMDMA_CICR_TRANS_ERR_IE (1 << 8)
344#define CAMDMA_CICR_PACKET_IE (1 << 7)
345#define CAMDMA_CICR_BLOCK_IE (1 << 5)
346#define CAMDMA_CICR_LAST_IE (1 << 4)
347#define CAMDMA_CICR_FRAME_IE (1 << 3)
348#define CAMDMA_CICR_HALF_IE (1 << 2)
349#define CAMDMA_CICR_DROP_IE (1 << 1)
350
351#define CAMDMA_CSR_MISALIGNED_ERR (1 << 11)
352#define CAMDMA_CSR_SUPERVISOR_ERR (1 << 10)
353#define CAMDMA_CSR_SECURE_ERR (1 << 9)
354#define CAMDMA_CSR_TRANS_ERR (1 << 8)
355#define CAMDMA_CSR_PACKET (1 << 7)
356#define CAMDMA_CSR_SYNC (1 << 6)
357#define CAMDMA_CSR_BLOCK (1 << 5)
358#define CAMDMA_CSR_LAST (1 << 4)
359#define CAMDMA_CSR_FRAME (1 << 3)
360#define CAMDMA_CSR_HALF (1 << 2)
361#define CAMDMA_CSR_DROP (1 << 1)
362
363#define CAMDMA_CSDP_SRC_ENDIANNESS (1 << 21)
364#define CAMDMA_CSDP_SRC_ENDIANNESS_LOCK (1 << 20)
365#define CAMDMA_CSDP_DST_ENDIANNESS (1 << 19)
366#define CAMDMA_CSDP_DST_ENDIANNESS_LOCK (1 << 18)
367#define CAMDMA_CSDP_WRITE_MODE (3 << 16)
368#define CAMDMA_CSDP_WRITE_MODE_WRNP (0 << 16)
369#define CAMDMA_CSDP_WRITE_MODE_POSTED (1 << 16)
370#define CAMDMA_CSDP_WRITE_MODE_POSTED_LAST_WRNP (2 << 16)
371#define CAMDMA_CSDP_DST_BURST_EN (3 << 14)
372#define CAMDMA_CSDP_DST_BURST_EN_1 (0 << 14)
373#define CAMDMA_CSDP_DST_BURST_EN_16 (1 << 14)
374#define CAMDMA_CSDP_DST_BURST_EN_32 (2 << 14)
375#define CAMDMA_CSDP_DST_BURST_EN_64 (3 << 14)
376#define CAMDMA_CSDP_DST_PACKED (1 << 13)
377#define CAMDMA_CSDP_WR_ADD_TRSLT (15 << 9)
378#define CAMDMA_CSDP_WR_ADD_TRSLT_ENABLE_MREQADD (3 << 9)
379#define CAMDMA_CSDP_SRC_BURST_EN (3 << 7)
380#define CAMDMA_CSDP_SRC_BURST_EN_1 (0 << 7)
381#define CAMDMA_CSDP_SRC_BURST_EN_16 (1 << 7)
382#define CAMDMA_CSDP_SRC_BURST_EN_32 (2 << 7)
383#define CAMDMA_CSDP_SRC_BURST_EN_64 (3 << 7)
384#define CAMDMA_CSDP_SRC_PACKED (1 << 6)
385#define CAMDMA_CSDP_RD_ADD_TRSLT (15 << 2)
386#define CAMDMA_CSDP_RD_ADD_TRSLT_ENABLE_MREQADD (3 << 2)
387#define CAMDMA_CSDP_DATA_TYPE (3 << 0)
388#define CAMDMA_CSDP_DATA_TYPE_8BITS (0 << 0)
389#define CAMDMA_CSDP_DATA_TYPE_16BITS (1 << 0)
390#define CAMDMA_CSDP_DATA_TYPE_32BITS (2 << 0)
391
392#define CAMMMU_SYSCONFIG_AUTOIDLE (1 << 0)
393
394/*
395 *
396 * Declarations.
397 *
398 */
399
400/* forward declarations */
401struct omap24xxcam_sgdma;
402struct omap24xxcam_dma;
403
404typedef void (*sgdma_callback_t)(struct omap24xxcam_sgdma *cam,
405 u32 status, void *arg);
406typedef void (*dma_callback_t)(struct omap24xxcam_dma *cam,
407 u32 status, void *arg);
408
409struct channel_state {
410 dma_callback_t callback;
411 void *arg;
412};
413
414/* sgdma state for each of the possible videobuf_buffers + 2 overlays */
415struct sgdma_state {
416 const struct scatterlist *sglist;
417 int sglen; /* number of sglist entries */
418 int next_sglist; /* index of next sglist entry to process */
419 unsigned int bytes_read; /* number of bytes read */
420 unsigned int len; /* total length of sglist (excluding
421 * bytes due to page alignment) */
422 int queued_sglist; /* number of sglist entries queued for DMA */
423 u32 csr; /* DMA return code */
424 sgdma_callback_t callback;
425 void *arg;
426};
427
428/* physical DMA channel management */
429struct omap24xxcam_dma {
430 spinlock_t lock; /* Lock for the whole structure. */
431
432 unsigned long base; /* base address for dma controller */
433
434 /* While dma_stop!=0, an attempt to start a new DMA transfer will
435 * fail.
436 */
437 atomic_t dma_stop;
438 int free_dmach; /* number of dma channels free */
439 int next_dmach; /* index of next dma channel to use */
440 struct channel_state ch_state[NUM_CAMDMA_CHANNELS];
441};
442
443/* scatter-gather DMA (scatterlist stuff) management */
444struct omap24xxcam_sgdma {
445 struct omap24xxcam_dma dma;
446
447 spinlock_t lock; /* Lock for the fields below. */
448 int free_sgdma; /* number of free sg dma slots */
449 int next_sgdma; /* index of next sg dma slot to use */
450 struct sgdma_state sg_state[NUM_SG_DMA];
451
452 /* Reset timer data */
453 struct timer_list reset_timer;
454};
455
456/* per-device data structure */
457struct omap24xxcam_device {
458 /*** mutex ***/
459 /*
460 * mutex serialises access to this structure. Also camera
461 * opening and releasing is synchronised by this.
462 */
463 struct mutex mutex;
464
465 /*** general driver state information ***/
466 atomic_t users;
467 /*
468 * Lock to serialise core enabling and disabling and access to
469 * sgdma_in_queue.
470 */
471 spinlock_t core_enable_disable_lock;
472 /*
473 * Number or sgdma requests in scatter-gather queue, protected
474 * by the lock above.
475 */
476 int sgdma_in_queue;
477 /*
478 * Sensor interface parameters: interface type, CC_CTRL
479 * register value and interface specific data.
480 */
481 int if_type;
482 union {
483 struct parallel {
484 u32 xclk;
485 } bt656;
486 } if_u;
487 u32 cc_ctrl;
488
489 /*** subsystem structures ***/
490 struct omap24xxcam_sgdma sgdma;
491
492 /*** hardware resources ***/
493 unsigned int irq;
494 unsigned long mmio_base;
495 unsigned long mmio_base_phys;
496 unsigned long mmio_size;
497
498 /*** interfaces and device ***/
499 struct v4l2_int_device *sdev;
500 struct device *dev;
501 struct video_device *vfd;
502
503 /*** camera and sensor reset related stuff ***/
504 struct work_struct sensor_reset_work;
505 /*
506 * We're in the middle of a reset. Don't enable core if this
507 * is non-zero! This exists to help decisionmaking in a case
508 * where videobuf_qbuf is called while we are in the middle of
509 * a reset.
510 */
511 atomic_t in_reset;
512 /*
513 * Non-zero if we don't want any resets for now. Used to
514 * prevent reset work to run when we're about to stop
515 * streaming.
516 */
517 atomic_t reset_disable;
518
519 /*** video device parameters ***/
520 int capture_mem;
521
522 /*** camera module clocks ***/
523 struct clk *fck;
524 struct clk *ick;
525
526 /*** capture data ***/
527 /* file handle, if streaming is on */
528 struct file *streaming;
529};
530
531/* Per-file handle data. */
532struct omap24xxcam_fh {
533 spinlock_t vbq_lock; /* spinlock for the videobuf queue */
534 struct videobuf_queue vbq;
535 struct v4l2_pix_format pix; /* serialise pix by vbq->lock */
536 atomic_t field_count; /* field counter for videobuf_buffer */
537 /* accessing cam here doesn't need serialisation: it's constant */
538 struct omap24xxcam_device *cam;
539};
540
541/*
542 *
543 * Register I/O functions.
544 *
545 */
546
547static inline u32 omap24xxcam_reg_in(unsigned long base, u32 offset)
548{
549 return readl(base + offset);
550}
551
552static inline u32 omap24xxcam_reg_out(unsigned long base, u32 offset,
553 u32 val)
554{
555 writel(val, base + offset);
556 return val;
557}
558
559static inline u32 omap24xxcam_reg_merge(unsigned long base, u32 offset,
560 u32 val, u32 mask)
561{
562 u32 addr = base + offset;
563 u32 new_val = (readl(addr) & ~mask) | (val & mask);
564
565 writel(new_val, addr);
566 return new_val;
567}
568
569/*
570 *
571 * Function prototypes.
572 *
573 */
574
575/* dma prototypes */
576
577void omap24xxcam_dma_hwinit(struct omap24xxcam_dma *dma);
578void omap24xxcam_dma_isr(struct omap24xxcam_dma *dma);
579
580/* sgdma prototypes */
581
582void omap24xxcam_sgdma_process(struct omap24xxcam_sgdma *sgdma);
583int omap24xxcam_sgdma_queue(struct omap24xxcam_sgdma *sgdma,
584 const struct scatterlist *sglist, int sglen,
585 int len, sgdma_callback_t callback, void *arg);
586void omap24xxcam_sgdma_sync(struct omap24xxcam_sgdma *sgdma);
587void omap24xxcam_sgdma_init(struct omap24xxcam_sgdma *sgdma,
588 unsigned long base,
589 void (*reset_callback)(unsigned long data),
590 unsigned long reset_callback_data);
591void omap24xxcam_sgdma_exit(struct omap24xxcam_sgdma *sgdma);
592
593#endif