2 * TI OMAP4 ISS V4L2 Driver - CSI PHY module
4 * Copyright (C) 2012 Texas Instruments, Inc.
6 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
14 #include <linux/delay.h>
15 #include <media/v4l2-common.h>
16 #include <linux/v4l2-mediabus.h>
24 * csi2_if_enable - Enable CSI2 Receiver interface.
25 * @enable: enable flag
28 static void csi2_if_enable(struct iss_csi2_device
*csi2
, u8 enable
)
30 struct iss_csi2_ctrl_cfg
*currctrl
= &csi2
->ctrl
;
32 iss_reg_update(csi2
->iss
, csi2
->regs1
, CSI2_CTRL
, CSI2_CTRL_IF_EN
,
33 enable
? CSI2_CTRL_IF_EN
: 0);
35 currctrl
->if_enable
= enable
;
39 * csi2_recv_config - CSI2 receiver module configuration.
40 * @currctrl: iss_csi2_ctrl_cfg structure
43 static void csi2_recv_config(struct iss_csi2_device
*csi2
,
44 struct iss_csi2_ctrl_cfg
*currctrl
)
48 if (currctrl
->frame_mode
)
49 reg
|= CSI2_CTRL_FRAME
;
51 reg
&= ~CSI2_CTRL_FRAME
;
53 if (currctrl
->vp_clk_enable
)
54 reg
|= CSI2_CTRL_VP_CLK_EN
;
56 reg
&= ~CSI2_CTRL_VP_CLK_EN
;
58 if (currctrl
->vp_only_enable
)
59 reg
|= CSI2_CTRL_VP_ONLY_EN
;
61 reg
&= ~CSI2_CTRL_VP_ONLY_EN
;
63 reg
&= ~CSI2_CTRL_VP_OUT_CTRL_MASK
;
64 reg
|= currctrl
->vp_out_ctrl
<< CSI2_CTRL_VP_OUT_CTRL_SHIFT
;
66 if (currctrl
->ecc_enable
)
67 reg
|= CSI2_CTRL_ECC_EN
;
69 reg
&= ~CSI2_CTRL_ECC_EN
;
72 * Set MFlag assertion boundaries to:
73 * Low: 4/8 of FIFO size
74 * High: 6/8 of FIFO size
76 reg
&= ~(CSI2_CTRL_MFLAG_LEVH_MASK
| CSI2_CTRL_MFLAG_LEVL_MASK
);
77 reg
|= (2 << CSI2_CTRL_MFLAG_LEVH_SHIFT
) |
78 (4 << CSI2_CTRL_MFLAG_LEVL_SHIFT
);
80 /* Generation of 16x64-bit bursts (Recommended) */
81 reg
|= CSI2_CTRL_BURST_SIZE_EXPAND
;
83 /* Do Non-Posted writes (Recommended) */
84 reg
|= CSI2_CTRL_NON_POSTED_WRITE
;
87 * Enforce Little endian for all formats, including:
88 * YUV4:2:2 8-bit and YUV4:2:0 Legacy
90 reg
|= CSI2_CTRL_ENDIANNESS
;
92 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTRL
, reg
);
95 static const unsigned int csi2_input_fmts
[] = {
96 MEDIA_BUS_FMT_SGRBG10_1X10
,
97 MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8
,
98 MEDIA_BUS_FMT_SRGGB10_1X10
,
99 MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8
,
100 MEDIA_BUS_FMT_SBGGR10_1X10
,
101 MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8
,
102 MEDIA_BUS_FMT_SGBRG10_1X10
,
103 MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8
,
104 MEDIA_BUS_FMT_SBGGR8_1X8
,
105 MEDIA_BUS_FMT_SGBRG8_1X8
,
106 MEDIA_BUS_FMT_SGRBG8_1X8
,
107 MEDIA_BUS_FMT_SRGGB8_1X8
,
108 MEDIA_BUS_FMT_UYVY8_1X16
,
109 MEDIA_BUS_FMT_YUYV8_1X16
,
112 /* To set the format on the CSI2 requires a mapping function that takes
113 * the following inputs:
114 * - 3 different formats (at this time)
115 * - 2 destinations (mem, vp+mem) (vp only handled separately)
116 * - 2 decompression options (on, off)
117 * Output should be CSI2 frame format code
118 * Array indices as follows: [format][dest][decompr]
119 * Not all combinations are valid. 0 means invalid.
121 static const u16 __csi2_fmt_map
[][2][2] = {
124 /* Output to memory */
126 /* No DPCM decompression */
127 CSI2_PIX_FMT_RAW10_EXP16
,
128 /* DPCM decompression */
133 /* No DPCM decompression */
134 CSI2_PIX_FMT_RAW10_EXP16_VP
,
135 /* DPCM decompression */
139 /* RAW10 DPCM8 formats */
141 /* Output to memory */
143 /* No DPCM decompression */
144 CSI2_USERDEF_8BIT_DATA1
,
145 /* DPCM decompression */
146 CSI2_USERDEF_8BIT_DATA1_DPCM10
,
150 /* No DPCM decompression */
151 CSI2_PIX_FMT_RAW8_VP
,
152 /* DPCM decompression */
153 CSI2_USERDEF_8BIT_DATA1_DPCM10_VP
,
158 /* Output to memory */
160 /* No DPCM decompression */
162 /* DPCM decompression */
167 /* No DPCM decompression */
168 CSI2_PIX_FMT_RAW8_VP
,
169 /* DPCM decompression */
175 /* Output to memory */
177 /* No DPCM decompression */
178 CSI2_PIX_FMT_YUV422_8BIT
,
179 /* DPCM decompression */
184 /* No DPCM decompression */
185 CSI2_PIX_FMT_YUV422_8BIT_VP16
,
186 /* DPCM decompression */
193 * csi2_ctx_map_format - Map CSI2 sink media bus format to CSI2 format ID
194 * @csi2: ISS CSI2 device
196 * Returns CSI2 physical format id
198 static u16
csi2_ctx_map_format(struct iss_csi2_device
*csi2
)
200 const struct v4l2_mbus_framefmt
*fmt
= &csi2
->formats
[CSI2_PAD_SINK
];
204 case MEDIA_BUS_FMT_SGRBG10_1X10
:
205 case MEDIA_BUS_FMT_SRGGB10_1X10
:
206 case MEDIA_BUS_FMT_SBGGR10_1X10
:
207 case MEDIA_BUS_FMT_SGBRG10_1X10
:
210 case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8
:
211 case MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8
:
212 case MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8
:
213 case MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8
:
216 case MEDIA_BUS_FMT_SBGGR8_1X8
:
217 case MEDIA_BUS_FMT_SGBRG8_1X8
:
218 case MEDIA_BUS_FMT_SGRBG8_1X8
:
219 case MEDIA_BUS_FMT_SRGGB8_1X8
:
222 case MEDIA_BUS_FMT_UYVY8_1X16
:
223 case MEDIA_BUS_FMT_YUYV8_1X16
:
227 WARN(1, "CSI2: pixel format %08x unsupported!\n",
232 if (!(csi2
->output
& CSI2_OUTPUT_IPIPEIF
) &&
233 !(csi2
->output
& CSI2_OUTPUT_MEMORY
)) {
234 /* Neither output enabled is a valid combination */
235 return CSI2_PIX_FMT_OTHERS
;
238 /* If we need to skip frames at the beginning of the stream disable the
239 * video port to avoid sending the skipped frames to the IPIPEIF.
241 destidx
= csi2
->frame_skip
? 0 : !!(csi2
->output
& CSI2_OUTPUT_IPIPEIF
);
243 return __csi2_fmt_map
[fmtidx
][destidx
][csi2
->dpcm_decompress
];
247 * csi2_set_outaddr - Set memory address to save output image
248 * @csi2: Pointer to ISS CSI2a device.
249 * @addr: 32-bit memory address aligned on 32 byte boundary.
251 * Sets the memory address where the output will be saved.
253 * Returns 0 if successful, or -EINVAL if the address is not in the 32 byte
256 static void csi2_set_outaddr(struct iss_csi2_device
*csi2
, u32 addr
)
258 struct iss_csi2_ctx_cfg
*ctx
= &csi2
->contexts
[0];
260 ctx
->ping_addr
= addr
;
261 ctx
->pong_addr
= addr
;
262 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_PING_ADDR(ctx
->ctxnum
),
264 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_PONG_ADDR(ctx
->ctxnum
),
269 * is_usr_def_mapping - Checks whether USER_DEF_MAPPING should
270 * be enabled by CSI2.
271 * @format_id: mapped format id
274 static inline int is_usr_def_mapping(u32 format_id
)
276 return (format_id
& 0xf0) == 0x40 ? 1 : 0;
280 * csi2_ctx_enable - Enable specified CSI2 context
281 * @ctxnum: Context number, valid between 0 and 7 values.
285 static void csi2_ctx_enable(struct iss_csi2_device
*csi2
, u8 ctxnum
, u8 enable
)
287 struct iss_csi2_ctx_cfg
*ctx
= &csi2
->contexts
[ctxnum
];
290 reg
= iss_reg_read(csi2
->iss
, csi2
->regs1
, CSI2_CTX_CTRL1(ctxnum
));
293 unsigned int skip
= 0;
295 if (csi2
->frame_skip
)
296 skip
= csi2
->frame_skip
;
297 else if (csi2
->output
& CSI2_OUTPUT_MEMORY
)
300 reg
&= ~CSI2_CTX_CTRL1_COUNT_MASK
;
301 reg
|= CSI2_CTX_CTRL1_COUNT_UNLOCK
302 | (skip
<< CSI2_CTX_CTRL1_COUNT_SHIFT
)
303 | CSI2_CTX_CTRL1_CTX_EN
;
305 reg
&= ~CSI2_CTX_CTRL1_CTX_EN
;
308 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_CTRL1(ctxnum
), reg
);
309 ctx
->enabled
= enable
;
313 * csi2_ctx_config - CSI2 context configuration.
314 * @ctx: context configuration
317 static void csi2_ctx_config(struct iss_csi2_device
*csi2
,
318 struct iss_csi2_ctx_cfg
*ctx
)
324 /* Set up CSI2_CTx_CTRL1 */
325 if (ctx
->eof_enabled
)
326 reg
= CSI2_CTX_CTRL1_EOF_EN
;
328 if (ctx
->eol_enabled
)
329 reg
|= CSI2_CTX_CTRL1_EOL_EN
;
331 if (ctx
->checksum_enabled
)
332 reg
|= CSI2_CTX_CTRL1_CS_EN
;
334 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_CTRL1(ctx
->ctxnum
), reg
);
336 /* Set up CSI2_CTx_CTRL2 */
337 reg
= ctx
->virtual_id
<< CSI2_CTX_CTRL2_VIRTUAL_ID_SHIFT
;
338 reg
|= ctx
->format_id
<< CSI2_CTX_CTRL2_FORMAT_SHIFT
;
340 if (ctx
->dpcm_decompress
&& ctx
->dpcm_predictor
)
341 reg
|= CSI2_CTX_CTRL2_DPCM_PRED
;
343 if (is_usr_def_mapping(ctx
->format_id
))
344 reg
|= 2 << CSI2_CTX_CTRL2_USER_DEF_MAP_SHIFT
;
346 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_CTRL2(ctx
->ctxnum
), reg
);
348 /* Set up CSI2_CTx_CTRL3 */
349 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_CTRL3(ctx
->ctxnum
),
350 ctx
->alpha
<< CSI2_CTX_CTRL3_ALPHA_SHIFT
);
352 /* Set up CSI2_CTx_DAT_OFST */
353 iss_reg_update(csi2
->iss
, csi2
->regs1
, CSI2_CTX_DAT_OFST(ctx
->ctxnum
),
354 CSI2_CTX_DAT_OFST_MASK
, ctx
->data_offset
);
356 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_PING_ADDR(ctx
->ctxnum
),
358 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_PONG_ADDR(ctx
->ctxnum
),
363 * csi2_timing_config - CSI2 timing configuration.
364 * @timing: csi2_timing_cfg structure
366 static void csi2_timing_config(struct iss_csi2_device
*csi2
,
367 struct iss_csi2_timing_cfg
*timing
)
371 reg
= iss_reg_read(csi2
->iss
, csi2
->regs1
, CSI2_TIMING
);
373 if (timing
->force_rx_mode
)
374 reg
|= CSI2_TIMING_FORCE_RX_MODE_IO1
;
376 reg
&= ~CSI2_TIMING_FORCE_RX_MODE_IO1
;
378 if (timing
->stop_state_16x
)
379 reg
|= CSI2_TIMING_STOP_STATE_X16_IO1
;
381 reg
&= ~CSI2_TIMING_STOP_STATE_X16_IO1
;
383 if (timing
->stop_state_4x
)
384 reg
|= CSI2_TIMING_STOP_STATE_X4_IO1
;
386 reg
&= ~CSI2_TIMING_STOP_STATE_X4_IO1
;
388 reg
&= ~CSI2_TIMING_STOP_STATE_COUNTER_IO1_MASK
;
389 reg
|= timing
->stop_state_counter
<<
390 CSI2_TIMING_STOP_STATE_COUNTER_IO1_SHIFT
;
392 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_TIMING
, reg
);
396 * csi2_irq_ctx_set - Enables CSI2 Context IRQs.
397 * @enable: Enable/disable CSI2 Context interrupts
399 static void csi2_irq_ctx_set(struct iss_csi2_device
*csi2
, int enable
)
401 const u32 mask
= CSI2_CTX_IRQ_FE
| CSI2_CTX_IRQ_FS
;
404 for (i
= 0; i
< 8; i
++) {
405 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_IRQSTATUS(i
),
408 iss_reg_set(csi2
->iss
, csi2
->regs1
,
409 CSI2_CTX_IRQENABLE(i
), mask
);
411 iss_reg_clr(csi2
->iss
, csi2
->regs1
,
412 CSI2_CTX_IRQENABLE(i
), mask
);
417 * csi2_irq_complexio1_set - Enables CSI2 ComplexIO IRQs.
418 * @enable: Enable/disable CSI2 ComplexIO #1 interrupts
420 static void csi2_irq_complexio1_set(struct iss_csi2_device
*csi2
, int enable
)
424 reg
= CSI2_COMPLEXIO_IRQ_STATEALLULPMEXIT
|
425 CSI2_COMPLEXIO_IRQ_STATEALLULPMENTER
|
426 CSI2_COMPLEXIO_IRQ_STATEULPM5
|
427 CSI2_COMPLEXIO_IRQ_ERRCONTROL5
|
428 CSI2_COMPLEXIO_IRQ_ERRESC5
|
429 CSI2_COMPLEXIO_IRQ_ERRSOTSYNCHS5
|
430 CSI2_COMPLEXIO_IRQ_ERRSOTHS5
|
431 CSI2_COMPLEXIO_IRQ_STATEULPM4
|
432 CSI2_COMPLEXIO_IRQ_ERRCONTROL4
|
433 CSI2_COMPLEXIO_IRQ_ERRESC4
|
434 CSI2_COMPLEXIO_IRQ_ERRSOTSYNCHS4
|
435 CSI2_COMPLEXIO_IRQ_ERRSOTHS4
|
436 CSI2_COMPLEXIO_IRQ_STATEULPM3
|
437 CSI2_COMPLEXIO_IRQ_ERRCONTROL3
|
438 CSI2_COMPLEXIO_IRQ_ERRESC3
|
439 CSI2_COMPLEXIO_IRQ_ERRSOTSYNCHS3
|
440 CSI2_COMPLEXIO_IRQ_ERRSOTHS3
|
441 CSI2_COMPLEXIO_IRQ_STATEULPM2
|
442 CSI2_COMPLEXIO_IRQ_ERRCONTROL2
|
443 CSI2_COMPLEXIO_IRQ_ERRESC2
|
444 CSI2_COMPLEXIO_IRQ_ERRSOTSYNCHS2
|
445 CSI2_COMPLEXIO_IRQ_ERRSOTHS2
|
446 CSI2_COMPLEXIO_IRQ_STATEULPM1
|
447 CSI2_COMPLEXIO_IRQ_ERRCONTROL1
|
448 CSI2_COMPLEXIO_IRQ_ERRESC1
|
449 CSI2_COMPLEXIO_IRQ_ERRSOTSYNCHS1
|
450 CSI2_COMPLEXIO_IRQ_ERRSOTHS1
;
451 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_COMPLEXIO_IRQSTATUS
, reg
);
453 iss_reg_set(csi2
->iss
, csi2
->regs1
, CSI2_COMPLEXIO_IRQENABLE
,
456 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_COMPLEXIO_IRQENABLE
,
461 * csi2_irq_status_set - Enables CSI2 Status IRQs.
462 * @enable: Enable/disable CSI2 Status interrupts
464 static void csi2_irq_status_set(struct iss_csi2_device
*csi2
, int enable
)
468 reg
= CSI2_IRQ_OCP_ERR
|
469 CSI2_IRQ_SHORT_PACKET
|
470 CSI2_IRQ_ECC_CORRECTION
|
471 CSI2_IRQ_ECC_NO_CORRECTION
|
472 CSI2_IRQ_COMPLEXIO_ERR
|
475 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_IRQSTATUS
, reg
);
477 iss_reg_set(csi2
->iss
, csi2
->regs1
, CSI2_IRQENABLE
, reg
);
479 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_IRQENABLE
, 0);
483 * omap4iss_csi2_reset - Resets the CSI2 module.
485 * Must be called with the phy lock held.
487 * Returns 0 if successful, or -EBUSY if power command didn't respond.
489 int omap4iss_csi2_reset(struct iss_csi2_device
*csi2
)
491 unsigned int timeout
;
493 if (!csi2
->available
)
496 if (csi2
->phy
->phy_in_use
)
499 iss_reg_set(csi2
->iss
, csi2
->regs1
, CSI2_SYSCONFIG
,
500 CSI2_SYSCONFIG_SOFT_RESET
);
502 timeout
= iss_poll_condition_timeout(
503 iss_reg_read(csi2
->iss
, csi2
->regs1
, CSI2_SYSSTATUS
) &
504 CSI2_SYSSTATUS_RESET_DONE
, 500, 100, 200);
506 dev_err(csi2
->iss
->dev
, "CSI2: Soft reset timeout!\n");
510 iss_reg_set(csi2
->iss
, csi2
->regs1
, CSI2_COMPLEXIO_CFG
,
511 CSI2_COMPLEXIO_CFG_RESET_CTRL
);
513 timeout
= iss_poll_condition_timeout(
514 iss_reg_read(csi2
->iss
, csi2
->phy
->phy_regs
, REGISTER1
) &
515 REGISTER1_RESET_DONE_CTRLCLK
, 10000, 100, 500);
517 dev_err(csi2
->iss
->dev
, "CSI2: CSI2_96M_FCLK reset timeout!\n");
521 iss_reg_update(csi2
->iss
, csi2
->regs1
, CSI2_SYSCONFIG
,
522 CSI2_SYSCONFIG_MSTANDBY_MODE_MASK
|
523 CSI2_SYSCONFIG_AUTO_IDLE
,
524 CSI2_SYSCONFIG_MSTANDBY_MODE_NO
);
529 static int csi2_configure(struct iss_csi2_device
*csi2
)
531 const struct iss_v4l2_subdevs_group
*pdata
;
532 struct iss_csi2_timing_cfg
*timing
= &csi2
->timing
[0];
533 struct v4l2_subdev
*sensor
;
534 struct media_pad
*pad
;
537 * CSI2 fields that can be updated while the context has
538 * been enabled or the interface has been enabled are not
539 * updated dynamically currently. So we do not allow to
540 * reconfigure if either has been enabled
542 if (csi2
->contexts
[0].enabled
|| csi2
->ctrl
.if_enable
)
545 pad
= media_entity_remote_pad(&csi2
->pads
[CSI2_PAD_SINK
]);
546 sensor
= media_entity_to_v4l2_subdev(pad
->entity
);
547 pdata
= sensor
->host_priv
;
549 csi2
->frame_skip
= 0;
550 v4l2_subdev_call(sensor
, sensor
, g_skip_frames
, &csi2
->frame_skip
);
552 csi2
->ctrl
.vp_out_ctrl
= pdata
->bus
.csi2
.vpclk_div
;
553 csi2
->ctrl
.frame_mode
= ISS_CSI2_FRAME_IMMEDIATE
;
554 csi2
->ctrl
.ecc_enable
= pdata
->bus
.csi2
.crc
;
556 timing
->force_rx_mode
= 1;
557 timing
->stop_state_16x
= 1;
558 timing
->stop_state_4x
= 1;
559 timing
->stop_state_counter
= 0x1ff;
562 * The CSI2 receiver can't do any format conversion except DPCM
563 * decompression, so every set_format call configures both pads
564 * and enables DPCM decompression as a special case:
566 if (csi2
->formats
[CSI2_PAD_SINK
].code
!=
567 csi2
->formats
[CSI2_PAD_SOURCE
].code
)
568 csi2
->dpcm_decompress
= true;
570 csi2
->dpcm_decompress
= false;
572 csi2
->contexts
[0].format_id
= csi2_ctx_map_format(csi2
);
574 if (csi2
->video_out
.bpl_padding
== 0)
575 csi2
->contexts
[0].data_offset
= 0;
577 csi2
->contexts
[0].data_offset
= csi2
->video_out
.bpl_value
;
580 * Enable end of frame and end of line signals generation for
581 * context 0. These signals are generated from CSI2 receiver to
582 * qualify the last pixel of a frame and the last pixel of a line.
583 * Without enabling the signals CSI2 receiver writes data to memory
584 * beyond buffer size and/or data line offset is not handled correctly.
586 csi2
->contexts
[0].eof_enabled
= 1;
587 csi2
->contexts
[0].eol_enabled
= 1;
589 csi2_irq_complexio1_set(csi2
, 1);
590 csi2_irq_ctx_set(csi2
, 1);
591 csi2_irq_status_set(csi2
, 1);
593 /* Set configuration (timings, format and links) */
594 csi2_timing_config(csi2
, timing
);
595 csi2_recv_config(csi2
, &csi2
->ctrl
);
596 csi2_ctx_config(csi2
, &csi2
->contexts
[0]);
602 * csi2_print_status - Prints CSI2 debug information.
604 #define CSI2_PRINT_REGISTER(iss, regs, name)\
605 dev_dbg(iss->dev, "###CSI2 " #name "=0x%08x\n", \
606 iss_reg_read(iss, regs, CSI2_##name))
608 static void csi2_print_status(struct iss_csi2_device
*csi2
)
610 struct iss_device
*iss
= csi2
->iss
;
612 if (!csi2
->available
)
615 dev_dbg(iss
->dev
, "-------------CSI2 Register dump-------------\n");
617 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, SYSCONFIG
);
618 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, SYSSTATUS
);
619 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, IRQENABLE
);
620 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, IRQSTATUS
);
621 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTRL
);
622 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, DBG_H
);
623 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, COMPLEXIO_CFG
);
624 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, COMPLEXIO_IRQSTATUS
);
625 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, SHORT_PACKET
);
626 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, COMPLEXIO_IRQENABLE
);
627 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, DBG_P
);
628 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, TIMING
);
629 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_CTRL1(0));
630 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_CTRL2(0));
631 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_DAT_OFST(0));
632 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_PING_ADDR(0));
633 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_PONG_ADDR(0));
634 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_IRQENABLE(0));
635 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_IRQSTATUS(0));
636 CSI2_PRINT_REGISTER(iss
, csi2
->regs1
, CTX_CTRL3(0));
638 dev_dbg(iss
->dev
, "--------------------------------------------\n");
641 /* -----------------------------------------------------------------------------
646 * csi2_isr_buffer - Does buffer handling at end-of-frame
647 * when writing to memory.
649 static void csi2_isr_buffer(struct iss_csi2_device
*csi2
)
651 struct iss_buffer
*buffer
;
653 csi2_ctx_enable(csi2
, 0, 0);
655 buffer
= omap4iss_video_buffer_next(&csi2
->video_out
);
658 * Let video queue operation restart engine if there is an underrun
664 csi2_set_outaddr(csi2
, buffer
->iss_addr
);
665 csi2_ctx_enable(csi2
, 0, 1);
668 static void csi2_isr_ctx(struct iss_csi2_device
*csi2
,
669 struct iss_csi2_ctx_cfg
*ctx
)
671 unsigned int n
= ctx
->ctxnum
;
674 status
= iss_reg_read(csi2
->iss
, csi2
->regs1
, CSI2_CTX_IRQSTATUS(n
));
675 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_CTX_IRQSTATUS(n
), status
);
677 if (omap4iss_module_sync_is_stopping(&csi2
->wait
, &csi2
->stopping
))
680 /* Propagate frame number */
681 if (status
& CSI2_CTX_IRQ_FS
) {
682 struct iss_pipeline
*pipe
=
683 to_iss_pipeline(&csi2
->subdev
.entity
);
687 frame
= iss_reg_read(csi2
->iss
, csi2
->regs1
,
688 CSI2_CTX_CTRL2(ctx
->ctxnum
))
689 >> CSI2_CTX_CTRL2_FRAME_SHIFT
;
692 /* A zero value means that the counter isn't implemented
693 * by the source. Increment the frame number in software
696 atomic_inc(&pipe
->frame_number
);
698 /* Extend the 16 bit frame number to 32 bits by
699 * computing the delta between two consecutive CSI2
700 * frame numbers and adding it to the software frame
701 * number. The hardware counter starts at 1 and wraps
702 * from 0xffff to 1 without going through 0, so subtract
703 * 1 when the counter wraps.
705 delta
= frame
- ctx
->frame
;
706 if (frame
< ctx
->frame
)
710 atomic_add(delta
, &pipe
->frame_number
);
714 if (!(status
& CSI2_CTX_IRQ_FE
))
717 /* Skip interrupts until we reach the frame skip count. The CSI2 will be
718 * automatically disabled, as the frame skip count has been programmed
719 * in the CSI2_CTx_CTRL1::COUNT field, so reenable it.
721 * It would have been nice to rely on the FRAME_NUMBER interrupt instead
722 * but it turned out that the interrupt is only generated when the CSI2
723 * writes to memory (the CSI2_CTx_CTRL1::COUNT field is decreased
724 * correctly and reaches 0 when data is forwarded to the video port only
725 * but no interrupt arrives). Maybe a CSI2 hardware bug.
727 if (csi2
->frame_skip
) {
729 if (csi2
->frame_skip
== 0) {
730 ctx
->format_id
= csi2_ctx_map_format(csi2
);
731 csi2_ctx_config(csi2
, ctx
);
732 csi2_ctx_enable(csi2
, n
, 1);
737 if (csi2
->output
& CSI2_OUTPUT_MEMORY
)
738 csi2_isr_buffer(csi2
);
742 * omap4iss_csi2_isr - CSI2 interrupt handling.
744 void omap4iss_csi2_isr(struct iss_csi2_device
*csi2
)
746 struct iss_pipeline
*pipe
= to_iss_pipeline(&csi2
->subdev
.entity
);
747 u32 csi2_irqstatus
, cpxio1_irqstatus
;
748 struct iss_device
*iss
= csi2
->iss
;
750 if (!csi2
->available
)
753 csi2_irqstatus
= iss_reg_read(csi2
->iss
, csi2
->regs1
, CSI2_IRQSTATUS
);
754 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_IRQSTATUS
, csi2_irqstatus
);
757 if (csi2_irqstatus
& CSI2_IRQ_COMPLEXIO_ERR
) {
758 cpxio1_irqstatus
= iss_reg_read(csi2
->iss
, csi2
->regs1
,
759 CSI2_COMPLEXIO_IRQSTATUS
);
760 iss_reg_write(csi2
->iss
, csi2
->regs1
, CSI2_COMPLEXIO_IRQSTATUS
,
762 dev_dbg(iss
->dev
, "CSI2: ComplexIO Error IRQ %x\n",
767 if (csi2_irqstatus
& (CSI2_IRQ_OCP_ERR
|
768 CSI2_IRQ_SHORT_PACKET
|
769 CSI2_IRQ_ECC_NO_CORRECTION
|
770 CSI2_IRQ_COMPLEXIO_ERR
|
771 CSI2_IRQ_FIFO_OVF
)) {
773 "CSI2 Err: OCP:%d SHORT:%d ECC:%d CPXIO:%d OVF:%d\n",
774 csi2_irqstatus
& CSI2_IRQ_OCP_ERR
? 1 : 0,
775 csi2_irqstatus
& CSI2_IRQ_SHORT_PACKET
? 1 : 0,
776 csi2_irqstatus
& CSI2_IRQ_ECC_NO_CORRECTION
? 1 : 0,
777 csi2_irqstatus
& CSI2_IRQ_COMPLEXIO_ERR
? 1 : 0,
778 csi2_irqstatus
& CSI2_IRQ_FIFO_OVF
? 1 : 0);
782 /* Successful cases */
783 if (csi2_irqstatus
& CSI2_IRQ_CONTEXT0
)
784 csi2_isr_ctx(csi2
, &csi2
->contexts
[0]);
786 if (csi2_irqstatus
& CSI2_IRQ_ECC_CORRECTION
)
787 dev_dbg(iss
->dev
, "CSI2: ECC correction done\n");
790 /* -----------------------------------------------------------------------------
791 * ISS video operations
795 * csi2_queue - Queues the first buffer when using memory output
796 * @video: The video node
797 * @buffer: buffer to queue
799 static int csi2_queue(struct iss_video
*video
, struct iss_buffer
*buffer
)
801 struct iss_csi2_device
*csi2
= container_of(video
,
802 struct iss_csi2_device
, video_out
);
804 csi2_set_outaddr(csi2
, buffer
->iss_addr
);
807 * If streaming was enabled before there was a buffer queued
808 * or underrun happened in the ISR, the hardware was not enabled
809 * and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
812 if (csi2
->video_out
.dmaqueue_flags
& ISS_VIDEO_DMAQUEUE_UNDERRUN
) {
813 /* Enable / disable context 0 and IRQs */
814 csi2_if_enable(csi2
, 1);
815 csi2_ctx_enable(csi2
, 0, 1);
816 iss_video_dmaqueue_flags_clr(&csi2
->video_out
);
822 static const struct iss_video_operations csi2_issvideo_ops
= {
826 /* -----------------------------------------------------------------------------
827 * V4L2 subdev operations
830 static struct v4l2_mbus_framefmt
*
831 __csi2_get_format(struct iss_csi2_device
*csi2
,
832 struct v4l2_subdev_pad_config
*cfg
,
834 enum v4l2_subdev_format_whence which
)
836 if (which
== V4L2_SUBDEV_FORMAT_TRY
)
837 return v4l2_subdev_get_try_format(&csi2
->subdev
, cfg
, pad
);
839 return &csi2
->formats
[pad
];
843 csi2_try_format(struct iss_csi2_device
*csi2
,
844 struct v4l2_subdev_pad_config
*cfg
,
846 struct v4l2_mbus_framefmt
*fmt
,
847 enum v4l2_subdev_format_whence which
)
850 struct v4l2_mbus_framefmt
*format
;
851 const struct iss_format_info
*info
;
856 /* Clamp the width and height to valid range (1-8191). */
857 for (i
= 0; i
< ARRAY_SIZE(csi2_input_fmts
); i
++) {
858 if (fmt
->code
== csi2_input_fmts
[i
])
862 /* If not found, use SGRBG10 as default */
863 if (i
>= ARRAY_SIZE(csi2_input_fmts
))
864 fmt
->code
= MEDIA_BUS_FMT_SGRBG10_1X10
;
866 fmt
->width
= clamp_t(u32
, fmt
->width
, 1, 8191);
867 fmt
->height
= clamp_t(u32
, fmt
->height
, 1, 8191);
870 case CSI2_PAD_SOURCE
:
871 /* Source format same as sink format, except for DPCM
874 pixelcode
= fmt
->code
;
875 format
= __csi2_get_format(csi2
, cfg
, CSI2_PAD_SINK
, which
);
876 memcpy(fmt
, format
, sizeof(*fmt
));
879 * Only Allow DPCM decompression, and check that the
880 * pattern is preserved
882 info
= omap4iss_video_format_info(fmt
->code
);
883 if (info
->uncompressed
== pixelcode
)
884 fmt
->code
= pixelcode
;
888 /* RGB, non-interlaced */
889 fmt
->colorspace
= V4L2_COLORSPACE_SRGB
;
890 fmt
->field
= V4L2_FIELD_NONE
;
894 * csi2_enum_mbus_code - Handle pixel format enumeration
895 * @sd : pointer to v4l2 subdev structure
896 * @cfg : V4L2 subdev pad config
897 * @code : pointer to v4l2_subdev_mbus_code_enum structure
898 * return -EINVAL or zero on success
900 static int csi2_enum_mbus_code(struct v4l2_subdev
*sd
,
901 struct v4l2_subdev_pad_config
*cfg
,
902 struct v4l2_subdev_mbus_code_enum
*code
)
904 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
905 struct v4l2_mbus_framefmt
*format
;
906 const struct iss_format_info
*info
;
908 if (code
->pad
== CSI2_PAD_SINK
) {
909 if (code
->index
>= ARRAY_SIZE(csi2_input_fmts
))
912 code
->code
= csi2_input_fmts
[code
->index
];
914 format
= __csi2_get_format(csi2
, cfg
, CSI2_PAD_SINK
,
916 switch (code
->index
) {
918 /* Passthrough sink pad code */
919 code
->code
= format
->code
;
922 /* Uncompressed code */
923 info
= omap4iss_video_format_info(format
->code
);
924 if (info
->uncompressed
== format
->code
)
927 code
->code
= info
->uncompressed
;
937 static int csi2_enum_frame_size(struct v4l2_subdev
*sd
,
938 struct v4l2_subdev_pad_config
*cfg
,
939 struct v4l2_subdev_frame_size_enum
*fse
)
941 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
942 struct v4l2_mbus_framefmt format
;
947 format
.code
= fse
->code
;
950 csi2_try_format(csi2
, cfg
, fse
->pad
, &format
, fse
->which
);
951 fse
->min_width
= format
.width
;
952 fse
->min_height
= format
.height
;
954 if (format
.code
!= fse
->code
)
957 format
.code
= fse
->code
;
960 csi2_try_format(csi2
, cfg
, fse
->pad
, &format
, fse
->which
);
961 fse
->max_width
= format
.width
;
962 fse
->max_height
= format
.height
;
968 * csi2_get_format - Handle get format by pads subdev method
969 * @sd : pointer to v4l2 subdev structure
970 * @cfg: V4L2 subdev pad config
971 * @fmt: pointer to v4l2 subdev format structure
972 * return -EINVAL or zero on success
974 static int csi2_get_format(struct v4l2_subdev
*sd
,
975 struct v4l2_subdev_pad_config
*cfg
,
976 struct v4l2_subdev_format
*fmt
)
978 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
979 struct v4l2_mbus_framefmt
*format
;
981 format
= __csi2_get_format(csi2
, cfg
, fmt
->pad
, fmt
->which
);
985 fmt
->format
= *format
;
990 * csi2_set_format - Handle set format by pads subdev method
991 * @sd : pointer to v4l2 subdev structure
992 * @cfg: V4L2 subdev pad config
993 * @fmt: pointer to v4l2 subdev format structure
994 * return -EINVAL or zero on success
996 static int csi2_set_format(struct v4l2_subdev
*sd
,
997 struct v4l2_subdev_pad_config
*cfg
,
998 struct v4l2_subdev_format
*fmt
)
1000 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
1001 struct v4l2_mbus_framefmt
*format
;
1003 format
= __csi2_get_format(csi2
, cfg
, fmt
->pad
, fmt
->which
);
1007 csi2_try_format(csi2
, cfg
, fmt
->pad
, &fmt
->format
, fmt
->which
);
1008 *format
= fmt
->format
;
1010 /* Propagate the format from sink to source */
1011 if (fmt
->pad
== CSI2_PAD_SINK
) {
1012 format
= __csi2_get_format(csi2
, cfg
, CSI2_PAD_SOURCE
,
1014 *format
= fmt
->format
;
1015 csi2_try_format(csi2
, cfg
, CSI2_PAD_SOURCE
, format
, fmt
->which
);
1021 static int csi2_link_validate(struct v4l2_subdev
*sd
, struct media_link
*link
,
1022 struct v4l2_subdev_format
*source_fmt
,
1023 struct v4l2_subdev_format
*sink_fmt
)
1025 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
1026 struct iss_pipeline
*pipe
= to_iss_pipeline(&csi2
->subdev
.entity
);
1029 pipe
->external
= media_entity_to_v4l2_subdev(link
->source
->entity
);
1030 rval
= omap4iss_get_external_info(pipe
, link
);
1034 return v4l2_subdev_link_validate_default(sd
, link
, source_fmt
,
1039 * csi2_init_formats - Initialize formats on all pads
1040 * @sd: ISS CSI2 V4L2 subdevice
1041 * @fh: V4L2 subdev file handle
1043 * Initialize all pad formats with default values. If fh is not NULL, try
1044 * formats are initialized on the file handle. Otherwise active formats are
1045 * initialized on the device.
1047 static int csi2_init_formats(struct v4l2_subdev
*sd
, struct v4l2_subdev_fh
*fh
)
1049 struct v4l2_subdev_format format
;
1051 memset(&format
, 0, sizeof(format
));
1052 format
.pad
= CSI2_PAD_SINK
;
1053 format
.which
= fh
? V4L2_SUBDEV_FORMAT_TRY
: V4L2_SUBDEV_FORMAT_ACTIVE
;
1054 format
.format
.code
= MEDIA_BUS_FMT_SGRBG10_1X10
;
1055 format
.format
.width
= 4096;
1056 format
.format
.height
= 4096;
1057 csi2_set_format(sd
, fh
? fh
->pad
: NULL
, &format
);
1063 * csi2_set_stream - Enable/Disable streaming on the CSI2 module
1064 * @sd: ISS CSI2 V4L2 subdevice
1065 * @enable: ISS pipeline stream state
1067 * Return 0 on success or a negative error code otherwise.
1069 static int csi2_set_stream(struct v4l2_subdev
*sd
, int enable
)
1071 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
1072 struct iss_device
*iss
= csi2
->iss
;
1073 struct iss_video
*video_out
= &csi2
->video_out
;
1076 if (csi2
->state
== ISS_PIPELINE_STREAM_STOPPED
) {
1077 if (enable
== ISS_PIPELINE_STREAM_STOPPED
)
1080 omap4iss_subclk_enable(iss
, csi2
->subclk
);
1084 case ISS_PIPELINE_STREAM_CONTINUOUS
: {
1085 ret
= omap4iss_csiphy_config(iss
, sd
);
1089 if (omap4iss_csiphy_acquire(csi2
->phy
) < 0)
1091 csi2_configure(csi2
);
1092 csi2_print_status(csi2
);
1095 * When outputting to memory with no buffer available, let the
1096 * buffer queue handler start the hardware. A DMA queue flag
1097 * ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
1098 * a buffer available.
1100 if (csi2
->output
& CSI2_OUTPUT_MEMORY
&&
1101 !(video_out
->dmaqueue_flags
& ISS_VIDEO_DMAQUEUE_QUEUED
))
1103 /* Enable context 0 and IRQs */
1104 atomic_set(&csi2
->stopping
, 0);
1105 csi2_ctx_enable(csi2
, 0, 1);
1106 csi2_if_enable(csi2
, 1);
1107 iss_video_dmaqueue_flags_clr(video_out
);
1110 case ISS_PIPELINE_STREAM_STOPPED
:
1111 if (csi2
->state
== ISS_PIPELINE_STREAM_STOPPED
)
1113 if (omap4iss_module_sync_idle(&sd
->entity
, &csi2
->wait
,
1116 csi2_ctx_enable(csi2
, 0, 0);
1117 csi2_if_enable(csi2
, 0);
1118 csi2_irq_ctx_set(csi2
, 0);
1119 omap4iss_csiphy_release(csi2
->phy
);
1120 omap4iss_subclk_disable(iss
, csi2
->subclk
);
1121 iss_video_dmaqueue_flags_clr(video_out
);
1125 csi2
->state
= enable
;
1129 /* subdev video operations */
1130 static const struct v4l2_subdev_video_ops csi2_video_ops
= {
1131 .s_stream
= csi2_set_stream
,
1134 /* subdev pad operations */
1135 static const struct v4l2_subdev_pad_ops csi2_pad_ops
= {
1136 .enum_mbus_code
= csi2_enum_mbus_code
,
1137 .enum_frame_size
= csi2_enum_frame_size
,
1138 .get_fmt
= csi2_get_format
,
1139 .set_fmt
= csi2_set_format
,
1140 .link_validate
= csi2_link_validate
,
1143 /* subdev operations */
1144 static const struct v4l2_subdev_ops csi2_ops
= {
1145 .video
= &csi2_video_ops
,
1146 .pad
= &csi2_pad_ops
,
1149 /* subdev internal operations */
1150 static const struct v4l2_subdev_internal_ops csi2_internal_ops
= {
1151 .open
= csi2_init_formats
,
1154 /* -----------------------------------------------------------------------------
1155 * Media entity operations
1159 * csi2_link_setup - Setup CSI2 connections.
1160 * @entity : Pointer to media entity structure
1161 * @local : Pointer to local pad array
1162 * @remote : Pointer to remote pad array
1163 * @flags : Link flags
1164 * return -EINVAL or zero on success
1166 static int csi2_link_setup(struct media_entity
*entity
,
1167 const struct media_pad
*local
,
1168 const struct media_pad
*remote
, u32 flags
)
1170 struct v4l2_subdev
*sd
= media_entity_to_v4l2_subdev(entity
);
1171 struct iss_csi2_device
*csi2
= v4l2_get_subdevdata(sd
);
1172 struct iss_csi2_ctrl_cfg
*ctrl
= &csi2
->ctrl
;
1173 unsigned int index
= local
->index
;
1175 /* FIXME: this is actually a hack! */
1176 if (is_media_entity_v4l2_subdev(remote
->entity
))
1180 * The ISS core doesn't support pipelines with multiple video outputs.
1181 * Revisit this when it will be implemented, and return -EBUSY for now.
1185 case CSI2_PAD_SOURCE
:
1186 if (flags
& MEDIA_LNK_FL_ENABLED
) {
1187 if (csi2
->output
& ~CSI2_OUTPUT_MEMORY
)
1189 csi2
->output
|= CSI2_OUTPUT_MEMORY
;
1191 csi2
->output
&= ~CSI2_OUTPUT_MEMORY
;
1195 case CSI2_PAD_SOURCE
| 2 << 16:
1196 if (flags
& MEDIA_LNK_FL_ENABLED
) {
1197 if (csi2
->output
& ~CSI2_OUTPUT_IPIPEIF
)
1199 csi2
->output
|= CSI2_OUTPUT_IPIPEIF
;
1201 csi2
->output
&= ~CSI2_OUTPUT_IPIPEIF
;
1206 /* Link from camera to CSI2 is fixed... */
1210 ctrl
->vp_only_enable
= csi2
->output
& CSI2_OUTPUT_MEMORY
? false : true;
1211 ctrl
->vp_clk_enable
= !!(csi2
->output
& CSI2_OUTPUT_IPIPEIF
);
1216 /* media operations */
1217 static const struct media_entity_operations csi2_media_ops
= {
1218 .link_setup
= csi2_link_setup
,
1219 .link_validate
= v4l2_subdev_link_validate
,
1222 void omap4iss_csi2_unregister_entities(struct iss_csi2_device
*csi2
)
1224 v4l2_device_unregister_subdev(&csi2
->subdev
);
1225 omap4iss_video_unregister(&csi2
->video_out
);
1228 int omap4iss_csi2_register_entities(struct iss_csi2_device
*csi2
,
1229 struct v4l2_device
*vdev
)
1233 /* Register the subdev and video nodes. */
1234 ret
= v4l2_device_register_subdev(vdev
, &csi2
->subdev
);
1238 ret
= omap4iss_video_register(&csi2
->video_out
, vdev
);
1245 omap4iss_csi2_unregister_entities(csi2
);
1249 /* -----------------------------------------------------------------------------
1250 * ISS CSI2 initialisation and cleanup
1254 * csi2_init_entities - Initialize subdev and media entity.
1255 * @csi2: Pointer to csi2 structure.
1256 * return -ENOMEM or zero on success
1258 static int csi2_init_entities(struct iss_csi2_device
*csi2
, const char *subname
)
1260 struct v4l2_subdev
*sd
= &csi2
->subdev
;
1261 struct media_pad
*pads
= csi2
->pads
;
1262 struct media_entity
*me
= &sd
->entity
;
1264 char name
[V4L2_SUBDEV_NAME_SIZE
];
1266 v4l2_subdev_init(sd
, &csi2_ops
);
1267 sd
->internal_ops
= &csi2_internal_ops
;
1268 snprintf(name
, sizeof(name
), "CSI2%s", subname
);
1269 snprintf(sd
->name
, sizeof(sd
->name
), "OMAP4 ISS %s", name
);
1271 sd
->grp_id
= BIT(16); /* group ID for iss subdevs */
1272 v4l2_set_subdevdata(sd
, csi2
);
1273 sd
->flags
|= V4L2_SUBDEV_FL_HAS_DEVNODE
;
1275 pads
[CSI2_PAD_SOURCE
].flags
= MEDIA_PAD_FL_SOURCE
;
1276 pads
[CSI2_PAD_SINK
].flags
= MEDIA_PAD_FL_SINK
;
1278 me
->ops
= &csi2_media_ops
;
1279 ret
= media_entity_pads_init(me
, CSI2_PADS_NUM
, pads
);
1283 csi2_init_formats(sd
, NULL
);
1285 /* Video device node */
1286 csi2
->video_out
.type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
1287 csi2
->video_out
.ops
= &csi2_issvideo_ops
;
1288 csi2
->video_out
.bpl_alignment
= 32;
1289 csi2
->video_out
.bpl_zero_padding
= 1;
1290 csi2
->video_out
.bpl_max
= 0x1ffe0;
1291 csi2
->video_out
.iss
= csi2
->iss
;
1292 csi2
->video_out
.capture_mem
= PAGE_ALIGN(4096 * 4096) * 3;
1294 ret
= omap4iss_video_init(&csi2
->video_out
, name
);
1301 media_entity_cleanup(&csi2
->subdev
.entity
);
1306 * omap4iss_csi2_init - Routine for module driver init
1308 int omap4iss_csi2_init(struct iss_device
*iss
)
1310 struct iss_csi2_device
*csi2a
= &iss
->csi2a
;
1311 struct iss_csi2_device
*csi2b
= &iss
->csi2b
;
1315 csi2a
->available
= 1;
1316 csi2a
->regs1
= OMAP4_ISS_MEM_CSI2_A_REGS1
;
1317 csi2a
->phy
= &iss
->csiphy1
;
1318 csi2a
->subclk
= OMAP4_ISS_SUBCLK_CSI2_A
;
1319 csi2a
->state
= ISS_PIPELINE_STREAM_STOPPED
;
1320 init_waitqueue_head(&csi2a
->wait
);
1322 ret
= csi2_init_entities(csi2a
, "a");
1327 csi2b
->available
= 1;
1328 csi2b
->regs1
= OMAP4_ISS_MEM_CSI2_B_REGS1
;
1329 csi2b
->phy
= &iss
->csiphy2
;
1330 csi2b
->subclk
= OMAP4_ISS_SUBCLK_CSI2_B
;
1331 csi2b
->state
= ISS_PIPELINE_STREAM_STOPPED
;
1332 init_waitqueue_head(&csi2b
->wait
);
1334 ret
= csi2_init_entities(csi2b
, "b");
1342 * omap4iss_csi2_create_links() - CSI2 pads links creation
1343 * @iss: Pointer to ISS device
1345 * return negative error code or zero on success
1347 int omap4iss_csi2_create_links(struct iss_device
*iss
)
1349 struct iss_csi2_device
*csi2a
= &iss
->csi2a
;
1350 struct iss_csi2_device
*csi2b
= &iss
->csi2b
;
1353 /* Connect the CSI2a subdev to the video node. */
1354 ret
= media_create_pad_link(&csi2a
->subdev
.entity
, CSI2_PAD_SOURCE
,
1355 &csi2a
->video_out
.video
.entity
, 0, 0);
1359 /* Connect the CSI2b subdev to the video node. */
1360 ret
= media_create_pad_link(&csi2b
->subdev
.entity
, CSI2_PAD_SOURCE
,
1361 &csi2b
->video_out
.video
.entity
, 0, 0);
1369 * omap4iss_csi2_cleanup - Routine for module driver cleanup
1371 void omap4iss_csi2_cleanup(struct iss_device
*iss
)
1373 struct iss_csi2_device
*csi2a
= &iss
->csi2a
;
1374 struct iss_csi2_device
*csi2b
= &iss
->csi2b
;
1376 omap4iss_video_cleanup(&csi2a
->video_out
);
1377 media_entity_cleanup(&csi2a
->subdev
.entity
);
1379 omap4iss_video_cleanup(&csi2b
->video_out
);
1380 media_entity_cleanup(&csi2b
->subdev
.entity
);