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1 From 7b7027a39b981e3d72a5876274e857615d5149e1 Mon Sep 17 00:00:00 2001
2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
3 Date: Wed, 31 Oct 2018 14:59:22 +0000
4 Subject: [PATCH 198/806] media: bcm2835-unicam: Driver for CCP2/CSI2 camera
5 interface
6
7 Add driver for the Unicam camera receiver block on
8 BCM283x processors.
9
10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
11 ---
12 drivers/media/platform/Kconfig | 1 +
13 drivers/media/platform/Makefile | 2 +
14 drivers/media/platform/bcm2835/Kconfig | 14 +
15 drivers/media/platform/bcm2835/Makefile | 3 +
16 .../media/platform/bcm2835/bcm2835-unicam.c | 2101 +++++++++++++++++
17 .../media/platform/bcm2835/vc4-regs-unicam.h | 266 +++
18 6 files changed, 2387 insertions(+)
19 create mode 100644 drivers/media/platform/bcm2835/Kconfig
20 create mode 100644 drivers/media/platform/bcm2835/Makefile
21 create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
22 create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
23
24 --- a/drivers/media/platform/Kconfig
25 +++ b/drivers/media/platform/Kconfig
26 @@ -137,6 +137,7 @@ source "drivers/media/platform/am437x/Kc
27 source "drivers/media/platform/xilinx/Kconfig"
28 source "drivers/media/platform/rcar-vin/Kconfig"
29 source "drivers/media/platform/atmel/Kconfig"
30 +source "drivers/media/platform/bcm2835/Kconfig"
31
32 config VIDEO_TI_CAL
33 tristate "TI CAL (Camera Adaptation Layer) driver"
34 --- a/drivers/media/platform/Makefile
35 +++ b/drivers/media/platform/Makefile
36 @@ -96,3 +96,5 @@ obj-$(CONFIG_VIDEO_QCOM_VENUS) += qcom/
37 obj-y += meson/
38
39 obj-y += cros-ec-cec/
40 +
41 +obj-y += bcm2835/
42 --- /dev/null
43 +++ b/drivers/media/platform/bcm2835/Kconfig
44 @@ -0,0 +1,14 @@
45 +# Broadcom VideoCore4 V4L2 camera support
46 +
47 +config VIDEO_BCM2835_UNICAM
48 + tristate "Broadcom BCM2835 Unicam video capture driver"
49 + depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
50 + depends on ARCH_BCM2835 || COMPILE_TEST
51 + select VIDEOBUF2_DMA_CONTIG
52 + select V4L2_FWNODE
53 + help
54 + Say Y here to enable V4L2 subdevice for CSI2 receiver.
55 + This is a V4L2 subdevice that interfaces directly to the VC4 peripheral.
56 +
57 + To compile this driver as a module, choose M here. The module
58 + will be called bcm2835-unicam.
59 --- /dev/null
60 +++ b/drivers/media/platform/bcm2835/Makefile
61 @@ -0,0 +1,3 @@
62 +# Makefile for BCM2835 Unicam driver
63 +
64 +obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
65 --- /dev/null
66 +++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
67 @@ -0,0 +1,2101 @@
68 +// SPDX-License-Identifier: GPL-2.0-only
69 +/*
70 + * BCM2835 Unicam capture Driver
71 + *
72 + * Copyright (C) 2017 - Raspberry Pi (Trading) Ltd.
73 + *
74 + * Dave Stevenson <dave.stevenson@raspberrypi.org>
75 + *
76 + * Based on TI am437x driver by Benoit Parrot and Lad, Prabhakar and
77 + * TI CAL camera interface driver by Benoit Parrot.
78 + *
79 + *
80 + * There are two camera drivers in the kernel for BCM283x - this one
81 + * and bcm2835-camera (currently in staging).
82 + *
83 + * This driver directly controls the Unicam peripheral - there is no
84 + * involvement with the VideoCore firmware. Unicam receives CSI-2 or
85 + * CCP2 data and writes it into SDRAM. The only potential processing options are
86 + * to repack Bayer data into an alternate format, and applying windowing.
87 + * The repacking does not shift the data, so could repack V4L2_PIX_FMT_Sxxxx10P
88 + * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
89 + * but not generically up to V4L2_PIX_FMT_Sxxxx16.
90 + * Adding support for repacking and windowing may be added later.
91 + *
92 + * It should be possible to connect this driver to any sensor with a
93 + * suitable output interface and V4L2 subdevice driver.
94 + *
95 + * bcm2835-camera uses the VideoCore firmware to control the sensor,
96 + * Unicam, ISP, and all tuner control loops. Fully processed frames are
97 + * delivered to the driver by the firmware. It only has sensor drivers
98 + * for Omnivision OV5647, and Sony IMX219 sensors.
99 + *
100 + * The two drivers are mutually exclusive for the same Unicam instance.
101 + * The VideoCore firmware checks the device tree configuration during boot.
102 + * If it finds device tree nodes called csi0 or csi1 it will block the
103 + * firmware from accessing the peripheral, and bcm2835-camera will
104 + * not be able to stream data.
105 + *
106 + *
107 + * This program is free software; you may redistribute it and/or modify
108 + * it under the terms of the GNU General Public License as published by
109 + * the Free Software Foundation; version 2 of the License.
110 + *
111 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
112 + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
113 + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
114 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
115 + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
116 + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
117 + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
118 + * SOFTWARE.
119 + */
120 +
121 +#include <linux/clk.h>
122 +#include <linux/delay.h>
123 +#include <linux/device.h>
124 +#include <linux/err.h>
125 +#include <linux/init.h>
126 +#include <linux/interrupt.h>
127 +#include <linux/io.h>
128 +#include <linux/module.h>
129 +#include <linux/of_device.h>
130 +#include <linux/of_graph.h>
131 +#include <linux/pinctrl/consumer.h>
132 +#include <linux/platform_device.h>
133 +#include <linux/pm_runtime.h>
134 +#include <linux/slab.h>
135 +#include <linux/uaccess.h>
136 +#include <linux/videodev2.h>
137 +
138 +#include <media/v4l2-common.h>
139 +#include <media/v4l2-ctrls.h>
140 +#include <media/v4l2-dev.h>
141 +#include <media/v4l2-device.h>
142 +#include <media/v4l2-dv-timings.h>
143 +#include <media/v4l2-event.h>
144 +#include <media/v4l2-ioctl.h>
145 +#include <media/v4l2-fwnode.h>
146 +#include <media/videobuf2-dma-contig.h>
147 +
148 +#include "vc4-regs-unicam.h"
149 +
150 +#define UNICAM_MODULE_NAME "unicam"
151 +#define UNICAM_VERSION "0.1.0"
152 +
153 +static int debug;
154 +module_param(debug, int, 0644);
155 +MODULE_PARM_DESC(debug, "Debug level 0-3");
156 +
157 +#define unicam_dbg(level, dev, fmt, arg...) \
158 + v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
159 +#define unicam_info(dev, fmt, arg...) \
160 + v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
161 +#define unicam_err(dev, fmt, arg...) \
162 + v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
163 +
164 +/*
165 + * Stride is a 16 bit register, but also has to be a multiple of 16.
166 + */
167 +#define BPL_ALIGNMENT 16
168 +#define MAX_BYTESPERLINE ((1 << 16) - BPL_ALIGNMENT)
169 +/*
170 + * Max width is therefore determined by the max stride divided by
171 + * the number of bits per pixel. Take 32bpp as a
172 + * worst case.
173 + * No imposed limit on the height, so adopt a square image for want
174 + * of anything better.
175 + */
176 +#define MAX_WIDTH (MAX_BYTESPERLINE / 4)
177 +#define MAX_HEIGHT MAX_WIDTH
178 +/* Define a nominal minimum image size */
179 +#define MIN_WIDTH 16
180 +#define MIN_HEIGHT 16
181 +/*
182 + * Whilst Unicam doesn't require any additional padding on the image
183 + * height, various other parts of the BCM283x frameworks require a multiple
184 + * of 16.
185 + * Seeing as image buffers are significantly larger than this extra
186 + * padding, add it in order to simplify integration.
187 + */
188 +#define HEIGHT_ALIGNMENT 16
189 +
190 +/*
191 + * struct unicam_fmt - Unicam media bus format information
192 + * @pixelformat: V4L2 pixel format FCC identifier.
193 + * @code: V4L2 media bus format code.
194 + * @depth: Bits per pixel (when stored in memory).
195 + * @csi_dt: CSI data type.
196 + */
197 +struct unicam_fmt {
198 + u32 fourcc;
199 + u32 code;
200 + u8 depth;
201 + u8 csi_dt;
202 +};
203 +
204 +static const struct unicam_fmt formats[] = {
205 + /* YUV Formats */
206 + {
207 + .fourcc = V4L2_PIX_FMT_YUYV,
208 + .code = MEDIA_BUS_FMT_YUYV8_2X8,
209 + .depth = 16,
210 + .csi_dt = 0x1e,
211 + }, {
212 + .fourcc = V4L2_PIX_FMT_UYVY,
213 + .code = MEDIA_BUS_FMT_UYVY8_2X8,
214 + .depth = 16,
215 + .csi_dt = 0x1e,
216 + }, {
217 + .fourcc = V4L2_PIX_FMT_YVYU,
218 + .code = MEDIA_BUS_FMT_YVYU8_2X8,
219 + .depth = 16,
220 + .csi_dt = 0x1e,
221 + }, {
222 + .fourcc = V4L2_PIX_FMT_VYUY,
223 + .code = MEDIA_BUS_FMT_VYUY8_2X8,
224 + .depth = 16,
225 + .csi_dt = 0x1e,
226 + }, {
227 + .fourcc = V4L2_PIX_FMT_YUYV,
228 + .code = MEDIA_BUS_FMT_YUYV8_1X16,
229 + .depth = 16,
230 + .csi_dt = 0x1e,
231 + }, {
232 + .fourcc = V4L2_PIX_FMT_UYVY,
233 + .code = MEDIA_BUS_FMT_UYVY8_1X16,
234 + .depth = 16,
235 + .csi_dt = 0x1e,
236 + }, {
237 + .fourcc = V4L2_PIX_FMT_YVYU,
238 + .code = MEDIA_BUS_FMT_YVYU8_1X16,
239 + .depth = 16,
240 + .csi_dt = 0x1e,
241 + }, {
242 + .fourcc = V4L2_PIX_FMT_VYUY,
243 + .code = MEDIA_BUS_FMT_VYUY8_1X16,
244 + .depth = 16,
245 + .csi_dt = 0x1e,
246 + }, {
247 + /* RGB Formats */
248 + .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
249 + .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
250 + .depth = 16,
251 + .csi_dt = 0x22,
252 + }, {
253 + .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
254 + .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
255 + .depth = 16,
256 + .csi_dt = 0x22
257 + }, {
258 + .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
259 + .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
260 + .depth = 16,
261 + .csi_dt = 0x21,
262 + }, {
263 + .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
264 + .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
265 + .depth = 16,
266 + .csi_dt = 0x21,
267 + }, {
268 + .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
269 + .code = MEDIA_BUS_FMT_RGB888_1X24,
270 + .depth = 24,
271 + .csi_dt = 0x24,
272 + }, {
273 + .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
274 + .code = MEDIA_BUS_FMT_BGR888_1X24,
275 + .depth = 24,
276 + .csi_dt = 0x24,
277 + }, {
278 + .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
279 + .code = MEDIA_BUS_FMT_ARGB8888_1X32,
280 + .depth = 32,
281 + .csi_dt = 0x0,
282 + }, {
283 + /* Bayer Formats */
284 + .fourcc = V4L2_PIX_FMT_SBGGR8,
285 + .code = MEDIA_BUS_FMT_SBGGR8_1X8,
286 + .depth = 8,
287 + .csi_dt = 0x2a,
288 + }, {
289 + .fourcc = V4L2_PIX_FMT_SGBRG8,
290 + .code = MEDIA_BUS_FMT_SGBRG8_1X8,
291 + .depth = 8,
292 + .csi_dt = 0x2a,
293 + }, {
294 + .fourcc = V4L2_PIX_FMT_SGRBG8,
295 + .code = MEDIA_BUS_FMT_SGRBG8_1X8,
296 + .depth = 8,
297 + .csi_dt = 0x2a,
298 + }, {
299 + .fourcc = V4L2_PIX_FMT_SRGGB8,
300 + .code = MEDIA_BUS_FMT_SRGGB8_1X8,
301 + .depth = 8,
302 + .csi_dt = 0x2a,
303 + }, {
304 + .fourcc = V4L2_PIX_FMT_SBGGR10P,
305 + .code = MEDIA_BUS_FMT_SBGGR10_1X10,
306 + .depth = 10,
307 + .csi_dt = 0x2b,
308 + }, {
309 + .fourcc = V4L2_PIX_FMT_SGBRG10P,
310 + .code = MEDIA_BUS_FMT_SGBRG10_1X10,
311 + .depth = 10,
312 + .csi_dt = 0x2b,
313 + }, {
314 + .fourcc = V4L2_PIX_FMT_SGRBG10P,
315 + .code = MEDIA_BUS_FMT_SGRBG10_1X10,
316 + .depth = 10,
317 + .csi_dt = 0x2b,
318 + }, {
319 + .fourcc = V4L2_PIX_FMT_SRGGB10P,
320 + .code = MEDIA_BUS_FMT_SRGGB10_1X10,
321 + .depth = 10,
322 + .csi_dt = 0x2b,
323 + }, {
324 + .fourcc = V4L2_PIX_FMT_SBGGR12P,
325 + .code = MEDIA_BUS_FMT_SBGGR12_1X12,
326 + .depth = 12,
327 + .csi_dt = 0x2c,
328 + }, {
329 + .fourcc = V4L2_PIX_FMT_SGBRG12P,
330 + .code = MEDIA_BUS_FMT_SGBRG12_1X12,
331 + .depth = 12,
332 + .csi_dt = 0x2c,
333 + }, {
334 + .fourcc = V4L2_PIX_FMT_SGRBG12P,
335 + .code = MEDIA_BUS_FMT_SGRBG12_1X12,
336 + .depth = 12,
337 + .csi_dt = 0x2c,
338 + }, {
339 + .fourcc = V4L2_PIX_FMT_SRGGB12P,
340 + .code = MEDIA_BUS_FMT_SRGGB12_1X12,
341 + .depth = 12,
342 + .csi_dt = 0x2c,
343 + },
344 + /*
345 + * 14 and 16 bit Bayer formats could be supported, but there are no V4L2
346 + * defines for 14bit packed Bayer, and no CSI2 data_type for raw 16.
347 + */
348 +};
349 +
350 +struct unicam_dmaqueue {
351 + struct list_head active;
352 +};
353 +
354 +struct unicam_buffer {
355 + struct vb2_v4l2_buffer vb;
356 + struct list_head list;
357 +};
358 +
359 +struct unicam_cfg {
360 + /* peripheral base address */
361 + void __iomem *base;
362 + /* clock gating base address */
363 + void __iomem *clk_gate_base;
364 +};
365 +
366 +#define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
367 +
368 +struct unicam_device {
369 + /* V4l2 specific parameters */
370 + /* Identifies video device for this channel */
371 + struct video_device video_dev;
372 + struct v4l2_ctrl_handler ctrl_handler;
373 +
374 + struct v4l2_fwnode_endpoint endpoint;
375 +
376 + struct v4l2_async_subdev asd;
377 +
378 + /* unicam cfg */
379 + struct unicam_cfg cfg;
380 + /* clock handle */
381 + struct clk *clock;
382 + /* V4l2 device */
383 + struct v4l2_device v4l2_dev;
384 + /* parent device */
385 + struct platform_device *pdev;
386 + /* subdevice async Notifier */
387 + struct v4l2_async_notifier notifier;
388 + unsigned int sequence;
389 +
390 + /* ptr to sub device */
391 + struct v4l2_subdev *sensor;
392 + /* Pad config for the sensor */
393 + struct v4l2_subdev_pad_config *sensor_config;
394 + /* current input at the sub device */
395 + int current_input;
396 +
397 + /* Pointer pointing to current v4l2_buffer */
398 + struct unicam_buffer *cur_frm;
399 + /* Pointer pointing to next v4l2_buffer */
400 + struct unicam_buffer *next_frm;
401 +
402 + /* video capture */
403 + const struct unicam_fmt *fmt;
404 + /* Used to store current pixel format */
405 + struct v4l2_format v_fmt;
406 + /* Used to store current mbus frame format */
407 + struct v4l2_mbus_framefmt m_fmt;
408 +
409 + struct unicam_fmt active_fmts[MAX_POSSIBLE_PIX_FMTS];
410 + int num_active_fmt;
411 + unsigned int virtual_channel;
412 + enum v4l2_mbus_type bus_type;
413 + /*
414 + * Stores bus.mipi_csi2.flags for CSI2 sensors, or
415 + * bus.mipi_csi1.strobe for CCP2.
416 + */
417 + unsigned int bus_flags;
418 + unsigned int max_data_lanes;
419 + unsigned int active_data_lanes;
420 +
421 + struct v4l2_rect crop;
422 +
423 + /* Currently selected input on subdev */
424 + int input;
425 +
426 + /* Buffer queue used in video-buf */
427 + struct vb2_queue buffer_queue;
428 + /* Queue of filled frames */
429 + struct unicam_dmaqueue dma_queue;
430 + /* IRQ lock for DMA queue */
431 + spinlock_t dma_queue_lock;
432 + /* lock used to access this structure */
433 + struct mutex lock;
434 + /* Flag to denote that we are processing buffers */
435 + int streaming;
436 +};
437 +
438 +/* Hardware access */
439 +#define clk_write(dev, val) writel((val) | 0x5a000000, (dev)->clk_gate_base)
440 +#define clk_read(dev) readl((dev)->clk_gate_base)
441 +
442 +#define reg_read(dev, offset) readl((dev)->base + (offset))
443 +#define reg_write(dev, offset, val) writel(val, (dev)->base + (offset))
444 +
445 +#define reg_read_field(dev, offset, mask) get_field(reg_read((dev), (offset), \
446 + mask))
447 +
448 +static inline int get_field(u32 value, u32 mask)
449 +{
450 + return (value & mask) >> __ffs(mask);
451 +}
452 +
453 +static inline void set_field(u32 *valp, u32 field, u32 mask)
454 +{
455 + u32 val = *valp;
456 +
457 + val &= ~mask;
458 + val |= (field << __ffs(mask)) & mask;
459 + *valp = val;
460 +}
461 +
462 +static inline void reg_write_field(struct unicam_cfg *dev, u32 offset,
463 + u32 field, u32 mask)
464 +{
465 + u32 val = reg_read((dev), (offset));
466 +
467 + set_field(&val, field, mask);
468 + reg_write((dev), (offset), val);
469 +}
470 +
471 +/* Power management functions */
472 +static inline int unicam_runtime_get(struct unicam_device *dev)
473 +{
474 + int r;
475 +
476 + r = pm_runtime_get_sync(&dev->pdev->dev);
477 +
478 + return r;
479 +}
480 +
481 +static inline void unicam_runtime_put(struct unicam_device *dev)
482 +{
483 + pm_runtime_put_sync(&dev->pdev->dev);
484 +}
485 +
486 +/* Format setup functions */
487 +static int find_mbus_depth_by_code(u32 code)
488 +{
489 + const struct unicam_fmt *fmt;
490 + unsigned int k;
491 +
492 + for (k = 0; k < ARRAY_SIZE(formats); k++) {
493 + fmt = &formats[k];
494 + if (fmt->code == code)
495 + return fmt->depth;
496 + }
497 +
498 + return 0;
499 +}
500 +
501 +static const struct unicam_fmt *find_format_by_code(struct unicam_device *dev,
502 + u32 code)
503 +{
504 + const struct unicam_fmt *fmt;
505 + unsigned int k;
506 +
507 + for (k = 0; k < dev->num_active_fmt; k++) {
508 + fmt = &dev->active_fmts[k];
509 + if (fmt->code == code)
510 + return fmt;
511 + }
512 +
513 + return NULL;
514 +}
515 +
516 +static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
517 + u32 pixelformat)
518 +{
519 + const struct unicam_fmt *fmt;
520 + unsigned int k;
521 +
522 + for (k = 0; k < dev->num_active_fmt; k++) {
523 + fmt = &dev->active_fmts[k];
524 + if (fmt->fourcc == pixelformat)
525 + return fmt;
526 + }
527 +
528 + return NULL;
529 +}
530 +
531 +static void dump_active_formats(struct unicam_device *dev)
532 +{
533 + int i;
534 +
535 + for (i = 0; i < dev->num_active_fmt; i++) {
536 + unicam_dbg(3, dev, "active_fmt[%d] (%p) is code %04x, fourcc " V4L2_FOURCC_CONV ", depth %d\n",
537 + i, &dev->active_fmts[i], dev->active_fmts[i].code,
538 + V4L2_FOURCC_CONV_ARGS(dev->active_fmts[i].fourcc),
539 + dev->active_fmts[i].depth);
540 + }
541 +}
542 +
543 +static inline unsigned int bytes_per_line(u32 width,
544 + const struct unicam_fmt *fmt)
545 +{
546 + return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
547 +}
548 +
549 +static int __subdev_get_format(struct unicam_device *dev,
550 + struct v4l2_mbus_framefmt *fmt)
551 +{
552 + struct v4l2_subdev_format sd_fmt = {0};
553 + struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
554 + int ret;
555 +
556 + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
557 + sd_fmt.pad = 0;
558 +
559 + ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
560 + &sd_fmt);
561 + if (ret < 0)
562 + return ret;
563 +
564 + *fmt = *mbus_fmt;
565 +
566 + unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
567 + fmt->width, fmt->height, fmt->code);
568 +
569 + return 0;
570 +}
571 +
572 +static int __subdev_set_format(struct unicam_device *dev,
573 + struct v4l2_mbus_framefmt *fmt)
574 +{
575 + struct v4l2_subdev_format sd_fmt = {
576 + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
577 + };
578 + struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
579 + int ret;
580 +
581 + *mbus_fmt = *fmt;
582 +
583 + ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
584 + &sd_fmt);
585 + if (ret < 0)
586 + return ret;
587 +
588 + unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
589 + fmt->width, fmt->height, fmt->code);
590 +
591 + return 0;
592 +}
593 +
594 +static int unicam_calc_format_size_bpl(struct unicam_device *dev,
595 + const struct unicam_fmt *fmt,
596 + struct v4l2_format *f)
597 +{
598 + unsigned int min_bytesperline;
599 +
600 + v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 2,
601 + &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 0,
602 + 0);
603 +
604 + min_bytesperline = bytes_per_line(f->fmt.pix.width, fmt);
605 +
606 + if (f->fmt.pix.bytesperline > min_bytesperline &&
607 + f->fmt.pix.bytesperline <= MAX_BYTESPERLINE)
608 + f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline,
609 + BPL_ALIGNMENT);
610 + else
611 + f->fmt.pix.bytesperline = min_bytesperline;
612 +
613 + /* Align height up for compatibility with other hardware blocks */
614 + f->fmt.pix.sizeimage = ALIGN(f->fmt.pix.height, HEIGHT_ALIGNMENT) *
615 + f->fmt.pix.bytesperline;
616 +
617 + unicam_dbg(3, dev, "%s: fourcc: " V4L2_FOURCC_CONV " size: %dx%d bpl:%d img_size:%d\n",
618 + __func__,
619 + V4L2_FOURCC_CONV_ARGS(f->fmt.pix.pixelformat),
620 + f->fmt.pix.width, f->fmt.pix.height,
621 + f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
622 +
623 + return 0;
624 +}
625 +
626 +static int unicam_reset_format(struct unicam_device *dev)
627 +{
628 + struct v4l2_mbus_framefmt mbus_fmt;
629 + int ret;
630 +
631 + ret = __subdev_get_format(dev, &mbus_fmt);
632 + if (ret) {
633 + unicam_err(dev, "Failed to get_format - ret %d\n", ret);
634 + return ret;
635 + }
636 +
637 + if (mbus_fmt.code != dev->fmt->code) {
638 + unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
639 + dev->fmt->code, mbus_fmt.code);
640 + return ret;
641 + }
642 +
643 + v4l2_fill_pix_format(&dev->v_fmt.fmt.pix, &mbus_fmt);
644 + dev->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
645 +
646 + unicam_calc_format_size_bpl(dev, dev->fmt, &dev->v_fmt);
647 +
648 + dev->m_fmt = mbus_fmt;
649 +
650 + return 0;
651 +}
652 +
653 +static void unicam_wr_dma_addr(struct unicam_device *dev, unsigned int dmaaddr)
654 +{
655 + unicam_dbg(1, dev, "wr_dma_addr %08x-%08x\n",
656 + dmaaddr, dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
657 + reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
658 + reg_write(&dev->cfg, UNICAM_IBEA0,
659 + dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
660 +}
661 +
662 +static inline void unicam_schedule_next_buffer(struct unicam_device *dev)
663 +{
664 + struct unicam_dmaqueue *dma_q = &dev->dma_queue;
665 + struct unicam_buffer *buf;
666 + dma_addr_t addr;
667 +
668 + buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
669 + dev->next_frm = buf;
670 + list_del(&buf->list);
671 +
672 + addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
673 + unicam_wr_dma_addr(dev, addr);
674 +}
675 +
676 +static inline void unicam_process_buffer_complete(struct unicam_device *dev)
677 +{
678 + dev->cur_frm->vb.field = dev->m_fmt.field;
679 + dev->cur_frm->vb.sequence = dev->sequence++;
680 +
681 + vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
682 + dev->cur_frm = dev->next_frm;
683 +}
684 +
685 +/*
686 + * unicam_isr : ISR handler for unicam capture
687 + * @irq: irq number
688 + * @dev_id: dev_id ptr
689 + *
690 + * It changes status of the captured buffer, takes next buffer from the queue
691 + * and sets its address in unicam registers
692 + */
693 +static irqreturn_t unicam_isr(int irq, void *dev)
694 +{
695 + struct unicam_device *unicam = (struct unicam_device *)dev;
696 + struct unicam_cfg *cfg = &unicam->cfg;
697 + struct unicam_dmaqueue *dma_q = &unicam->dma_queue;
698 + int ista, sta;
699 +
700 + /*
701 + * Don't service interrupts if not streaming.
702 + * Avoids issues if the VPU should enable the
703 + * peripheral without the kernel knowing (that
704 + * shouldn't happen, but causes issues if it does).
705 + */
706 + if (!unicam->streaming)
707 + return IRQ_HANDLED;
708 +
709 + sta = reg_read(cfg, UNICAM_STA);
710 + /* Write value back to clear the interrupts */
711 + reg_write(cfg, UNICAM_STA, sta);
712 +
713 + ista = reg_read(cfg, UNICAM_ISTA);
714 + /* Write value back to clear the interrupts */
715 + reg_write(cfg, UNICAM_ISTA, ista);
716 +
717 + if (!(sta && (UNICAM_IS | UNICAM_PI0)))
718 + return IRQ_HANDLED;
719 +
720 + if (ista & UNICAM_FSI) {
721 + /*
722 + * Timestamp is to be when the first data byte was captured,
723 + * aka frame start.
724 + */
725 + if (unicam->cur_frm)
726 + unicam->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
727 + }
728 + if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
729 + /*
730 + * Ensure we have swapped buffers already as we can't
731 + * stop the peripheral. Overwrite the frame we've just
732 + * captured instead.
733 + */
734 + if (unicam->cur_frm && unicam->cur_frm != unicam->next_frm)
735 + unicam_process_buffer_complete(unicam);
736 + }
737 +
738 + if (ista & (UNICAM_FSI | UNICAM_LCI)) {
739 + spin_lock(&unicam->dma_queue_lock);
740 + if (!list_empty(&dma_q->active) &&
741 + unicam->cur_frm == unicam->next_frm)
742 + unicam_schedule_next_buffer(unicam);
743 + spin_unlock(&unicam->dma_queue_lock);
744 + }
745 +
746 + if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
747 + /* Switch out of trigger mode if selected */
748 + reg_write_field(&unicam->cfg, UNICAM_ICTL, 1, UNICAM_TFC);
749 + reg_write_field(&unicam->cfg, UNICAM_ICTL, 0, UNICAM_FCM);
750 + }
751 + return IRQ_HANDLED;
752 +}
753 +
754 +static int unicam_querycap(struct file *file, void *priv,
755 + struct v4l2_capability *cap)
756 +{
757 + struct unicam_device *dev = video_drvdata(file);
758 +
759 + strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
760 + strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
761 +
762 + snprintf(cap->bus_info, sizeof(cap->bus_info),
763 + "platform:%s", dev->v4l2_dev.name);
764 +
765 + return 0;
766 +}
767 +
768 +static int unicam_enum_fmt_vid_cap(struct file *file, void *priv,
769 + struct v4l2_fmtdesc *f)
770 +{
771 + struct unicam_device *dev = video_drvdata(file);
772 + const struct unicam_fmt *fmt = NULL;
773 +
774 + if (f->index >= dev->num_active_fmt)
775 + return -EINVAL;
776 +
777 + fmt = &dev->active_fmts[f->index];
778 +
779 + f->pixelformat = fmt->fourcc;
780 +
781 + return 0;
782 +}
783 +
784 +static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
785 + struct v4l2_format *f)
786 +{
787 + struct unicam_device *dev = video_drvdata(file);
788 +
789 + *f = dev->v_fmt;
790 +
791 + return 0;
792 +}
793 +
794 +static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
795 + struct v4l2_format *f)
796 +{
797 + struct unicam_device *dev = video_drvdata(file);
798 + const struct unicam_fmt *fmt;
799 + struct v4l2_subdev_format sd_fmt = {
800 + .which = V4L2_SUBDEV_FORMAT_TRY,
801 + };
802 + struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
803 + int ret;
804 +
805 + fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
806 + if (!fmt) {
807 + unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use default of %08X\n",
808 + f->fmt.pix.pixelformat, dev->active_fmts[0].fourcc);
809 +
810 + /* Just get the first one enumerated */
811 + fmt = &dev->active_fmts[0];
812 + f->fmt.pix.pixelformat = fmt->fourcc;
813 + }
814 +
815 + v4l2_fill_mbus_format(mbus_fmt, &f->fmt.pix, fmt->code);
816 + /*
817 + * No support for receiving interlaced video, so never
818 + * request it from the sensor subdev.
819 + */
820 + mbus_fmt->field = V4L2_FIELD_NONE;
821 +
822 + ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
823 + &sd_fmt);
824 + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
825 + return ret;
826 +
827 + if (mbus_fmt->field != V4L2_FIELD_NONE)
828 + unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
829 +
830 + v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
831 + /*
832 + * Use current colorspace for now, it will get
833 + * updated properly during s_fmt
834 + */
835 + f->fmt.pix.colorspace = dev->v_fmt.fmt.pix.colorspace;
836 + return unicam_calc_format_size_bpl(dev, fmt, f);
837 +}
838 +
839 +static int unicam_s_fmt_vid_cap(struct file *file, void *priv,
840 + struct v4l2_format *f)
841 +{
842 + struct unicam_device *dev = video_drvdata(file);
843 + struct vb2_queue *q = &dev->buffer_queue;
844 + const struct unicam_fmt *fmt;
845 + struct v4l2_mbus_framefmt mbus_fmt = {0};
846 + int ret;
847 +
848 + if (vb2_is_busy(q))
849 + return -EBUSY;
850 +
851 + ret = unicam_try_fmt_vid_cap(file, priv, f);
852 + if (ret < 0)
853 + return ret;
854 +
855 + fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
856 + if (!fmt) {
857 + /* Unknown pixel format - adopt a default */
858 + fmt = &dev->active_fmts[0];
859 + f->fmt.pix.pixelformat = fmt->fourcc;
860 + return -EINVAL;
861 + }
862 +
863 + v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
864 +
865 + ret = __subdev_set_format(dev, &mbus_fmt);
866 + if (ret) {
867 + unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
868 + __func__, ret);
869 + return ret;
870 + }
871 +
872 + /* Just double check nothing has gone wrong */
873 + if (mbus_fmt.code != fmt->code) {
874 + unicam_dbg(3, dev,
875 + "%s subdev changed format on us, this should not happen\n",
876 + __func__);
877 + return -EINVAL;
878 + }
879 +
880 + dev->fmt = fmt;
881 + dev->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
882 + dev->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
883 + unicam_reset_format(dev);
884 +
885 + unicam_dbg(3, dev, "%s %dx%d, mbus_fmt %08X, V4L2 pix " V4L2_FOURCC_CONV ".\n",
886 + __func__, dev->v_fmt.fmt.pix.width,
887 + dev->v_fmt.fmt.pix.height, mbus_fmt.code,
888 + V4L2_FOURCC_CONV_ARGS(dev->v_fmt.fmt.pix.pixelformat));
889 +
890 + *f = dev->v_fmt;
891 +
892 + return 0;
893 +}
894 +
895 +static int unicam_queue_setup(struct vb2_queue *vq,
896 + unsigned int *nbuffers,
897 + unsigned int *nplanes,
898 + unsigned int sizes[],
899 + struct device *alloc_devs[])
900 +{
901 + struct unicam_device *dev = vb2_get_drv_priv(vq);
902 + unsigned int size = dev->v_fmt.fmt.pix.sizeimage;
903 +
904 + if (vq->num_buffers + *nbuffers < 3)
905 + *nbuffers = 3 - vq->num_buffers;
906 +
907 + if (*nplanes) {
908 + if (sizes[0] < size) {
909 + unicam_err(dev, "sizes[0] %i < size %u\n", sizes[0],
910 + size);
911 + return -EINVAL;
912 + }
913 + size = sizes[0];
914 + }
915 +
916 + *nplanes = 1;
917 + sizes[0] = size;
918 +
919 + return 0;
920 +}
921 +
922 +static int unicam_buffer_prepare(struct vb2_buffer *vb)
923 +{
924 + struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
925 + struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
926 + vb.vb2_buf);
927 + unsigned long size;
928 +
929 + if (WARN_ON(!dev->fmt))
930 + return -EINVAL;
931 +
932 + size = dev->v_fmt.fmt.pix.sizeimage;
933 + if (vb2_plane_size(vb, 0) < size) {
934 + unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
935 + vb2_plane_size(vb, 0), size);
936 + return -EINVAL;
937 + }
938 +
939 + vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
940 + return 0;
941 +}
942 +
943 +static void unicam_buffer_queue(struct vb2_buffer *vb)
944 +{
945 + struct unicam_device *dev = vb2_get_drv_priv(vb->vb2_queue);
946 + struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
947 + vb.vb2_buf);
948 + struct unicam_dmaqueue *dma_queue = &dev->dma_queue;
949 + unsigned long flags = 0;
950 +
951 + /* recheck locking */
952 + spin_lock_irqsave(&dev->dma_queue_lock, flags);
953 + list_add_tail(&buf->list, &dma_queue->active);
954 + spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
955 +}
956 +
957 +static void unicam_wr_dma_config(struct unicam_device *dev,
958 + unsigned int stride)
959 +{
960 + reg_write(&dev->cfg, UNICAM_IBLS, stride);
961 +}
962 +
963 +static void unicam_set_packing_config(struct unicam_device *dev)
964 +{
965 + int mbus_depth = find_mbus_depth_by_code(dev->fmt->code);
966 + int v4l2_depth = dev->fmt->depth;
967 + int pack, unpack;
968 + u32 val;
969 +
970 + if (mbus_depth == v4l2_depth) {
971 + unpack = UNICAM_PUM_NONE;
972 + pack = UNICAM_PPM_NONE;
973 + } else {
974 + switch (mbus_depth) {
975 + case 8:
976 + unpack = UNICAM_PUM_UNPACK8;
977 + break;
978 + case 10:
979 + unpack = UNICAM_PUM_UNPACK10;
980 + break;
981 + case 12:
982 + unpack = UNICAM_PUM_UNPACK12;
983 + break;
984 + case 14:
985 + unpack = UNICAM_PUM_UNPACK14;
986 + break;
987 + case 16:
988 + unpack = UNICAM_PUM_UNPACK16;
989 + break;
990 + default:
991 + unpack = UNICAM_PUM_NONE;
992 + break;
993 + }
994 + switch (v4l2_depth) {
995 + case 8:
996 + pack = UNICAM_PPM_PACK8;
997 + break;
998 + case 10:
999 + pack = UNICAM_PPM_PACK10;
1000 + break;
1001 + case 12:
1002 + pack = UNICAM_PPM_PACK12;
1003 + break;
1004 + case 14:
1005 + pack = UNICAM_PPM_PACK14;
1006 + break;
1007 + case 16:
1008 + pack = UNICAM_PPM_PACK16;
1009 + break;
1010 + default:
1011 + pack = UNICAM_PPM_NONE;
1012 + break;
1013 + }
1014 + }
1015 +
1016 + val = 0;
1017 + set_field(&val, 2, UNICAM_DEBL_MASK);
1018 + set_field(&val, unpack, UNICAM_PUM_MASK);
1019 + set_field(&val, pack, UNICAM_PPM_MASK);
1020 + reg_write(&dev->cfg, UNICAM_IPIPE, val);
1021 +}
1022 +
1023 +static void unicam_cfg_image_id(struct unicam_device *dev)
1024 +{
1025 + struct unicam_cfg *cfg = &dev->cfg;
1026 +
1027 + if (dev->bus_type == V4L2_MBUS_CSI2) {
1028 + /* CSI2 mode */
1029 + reg_write(cfg, UNICAM_IDI0,
1030 + (dev->virtual_channel << 6) | dev->fmt->csi_dt);
1031 + } else {
1032 + /* CCP2 mode */
1033 + reg_write(cfg, UNICAM_IDI0, (0x80 | dev->fmt->csi_dt));
1034 + }
1035 +}
1036 +
1037 +void unicam_start_rx(struct unicam_device *dev, unsigned long addr)
1038 +{
1039 + struct unicam_cfg *cfg = &dev->cfg;
1040 + int line_int_freq = dev->v_fmt.fmt.pix.height >> 2;
1041 + unsigned int i;
1042 + u32 val;
1043 +
1044 + if (line_int_freq < 128)
1045 + line_int_freq = 128;
1046 +
1047 + /* Enable lane clocks */
1048 + val = 1;
1049 + for (i = 0; i < dev->active_data_lanes; i++)
1050 + val = val << 2 | 1;
1051 + clk_write(cfg, val);
1052 +
1053 + /* Basic init */
1054 + reg_write(cfg, UNICAM_CTRL, UNICAM_MEM);
1055 +
1056 + /* Enable analogue control, and leave in reset. */
1057 + val = UNICAM_AR;
1058 + set_field(&val, 7, UNICAM_CTATADJ_MASK);
1059 + set_field(&val, 7, UNICAM_PTATADJ_MASK);
1060 + reg_write(cfg, UNICAM_ANA, val);
1061 + usleep_range(1000, 2000);
1062 +
1063 + /* Come out of reset */
1064 + reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_AR);
1065 +
1066 + /* Peripheral reset */
1067 + reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
1068 + reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
1069 +
1070 + reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
1071 +
1072 + /* Enable Rx control. */
1073 + val = reg_read(cfg, UNICAM_CTRL);
1074 + if (dev->bus_type == V4L2_MBUS_CSI2) {
1075 + set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK);
1076 + set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK);
1077 + } else {
1078 + set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK);
1079 + set_field(&val, dev->bus_flags, UNICAM_DCM_MASK);
1080 + }
1081 + /* Packet framer timeout */
1082 + set_field(&val, 0xf, UNICAM_PFT_MASK);
1083 + set_field(&val, 128, UNICAM_OET_MASK);
1084 + reg_write(cfg, UNICAM_CTRL, val);
1085 +
1086 + reg_write(cfg, UNICAM_IHWIN, 0);
1087 + reg_write(cfg, UNICAM_IVWIN, 0);
1088 +
1089 + /* AXI bus access QoS setup */
1090 + val = reg_read(&dev->cfg, UNICAM_PRI);
1091 + set_field(&val, 0, UNICAM_BL_MASK);
1092 + set_field(&val, 0, UNICAM_BS_MASK);
1093 + set_field(&val, 0xe, UNICAM_PP_MASK);
1094 + set_field(&val, 8, UNICAM_NP_MASK);
1095 + set_field(&val, 2, UNICAM_PT_MASK);
1096 + set_field(&val, 1, UNICAM_PE);
1097 + reg_write(cfg, UNICAM_PRI, val);
1098 +
1099 + reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_DDL);
1100 +
1101 + /* Always start in trigger frame capture mode (UNICAM_FCM set) */
1102 + val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM;
1103 + set_field(&val, line_int_freq, UNICAM_LCIE_MASK);
1104 + reg_write(cfg, UNICAM_ICTL, val);
1105 + reg_write(cfg, UNICAM_STA, UNICAM_STA_MASK_ALL);
1106 + reg_write(cfg, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
1107 +
1108 + /* tclk_term_en */
1109 + reg_write_field(cfg, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
1110 + /* tclk_settle */
1111 + reg_write_field(cfg, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
1112 + /* td_term_en */
1113 + reg_write_field(cfg, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
1114 + /* ths_settle */
1115 + reg_write_field(cfg, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
1116 + /* trx_enable */
1117 + reg_write_field(cfg, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
1118 +
1119 + reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_SOE);
1120 +
1121 + /* Packet compare setup - required to avoid missing frame ends */
1122 + val = 0;
1123 + set_field(&val, 1, UNICAM_PCE);
1124 + set_field(&val, 1, UNICAM_GI);
1125 + set_field(&val, 1, UNICAM_CPH);
1126 + set_field(&val, 0, UNICAM_PCVC_MASK);
1127 + set_field(&val, 1, UNICAM_PCDT_MASK);
1128 + reg_write(cfg, UNICAM_CMP0, val);
1129 +
1130 + /* Enable clock lane and set up terminations */
1131 + val = 0;
1132 + if (dev->bus_type == V4L2_MBUS_CSI2) {
1133 + /* CSI2 */
1134 + set_field(&val, 1, UNICAM_CLE);
1135 + set_field(&val, 1, UNICAM_CLLPE);
1136 + if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
1137 + set_field(&val, 1, UNICAM_CLTRE);
1138 + set_field(&val, 1, UNICAM_CLHSE);
1139 + }
1140 + } else {
1141 + /* CCP2 */
1142 + set_field(&val, 1, UNICAM_CLE);
1143 + set_field(&val, 1, UNICAM_CLHSE);
1144 + set_field(&val, 1, UNICAM_CLTRE);
1145 + }
1146 + reg_write(cfg, UNICAM_CLK, val);
1147 +
1148 + /*
1149 + * Enable required data lanes with appropriate terminations.
1150 + * The same value needs to be written to UNICAM_DATn registers for
1151 + * the active lanes, and 0 for inactive ones.
1152 + */
1153 + val = 0;
1154 + if (dev->bus_type == V4L2_MBUS_CSI2) {
1155 + /* CSI2 */
1156 + set_field(&val, 1, UNICAM_DLE);
1157 + set_field(&val, 1, UNICAM_DLLPE);
1158 + if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
1159 + set_field(&val, 1, UNICAM_DLTRE);
1160 + set_field(&val, 1, UNICAM_DLHSE);
1161 + }
1162 + } else {
1163 + /* CCP2 */
1164 + set_field(&val, 1, UNICAM_DLE);
1165 + set_field(&val, 1, UNICAM_DLHSE);
1166 + set_field(&val, 1, UNICAM_DLTRE);
1167 + }
1168 + reg_write(cfg, UNICAM_DAT0, val);
1169 +
1170 + if (dev->active_data_lanes == 1)
1171 + val = 0;
1172 + reg_write(cfg, UNICAM_DAT1, val);
1173 +
1174 + if (dev->max_data_lanes > 2) {
1175 + /*
1176 + * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the
1177 + * instance supports more than 2 data lanes.
1178 + */
1179 + if (dev->active_data_lanes == 2)
1180 + val = 0;
1181 + reg_write(cfg, UNICAM_DAT2, val);
1182 +
1183 + if (dev->active_data_lanes == 3)
1184 + val = 0;
1185 + reg_write(cfg, UNICAM_DAT3, val);
1186 + }
1187 +
1188 + unicam_wr_dma_config(dev, dev->v_fmt.fmt.pix.bytesperline);
1189 + unicam_wr_dma_addr(dev, addr);
1190 + unicam_set_packing_config(dev);
1191 + unicam_cfg_image_id(dev);
1192 +
1193 + /* Disabled embedded data */
1194 + val = 0;
1195 + set_field(&val, 0, UNICAM_EDL_MASK);
1196 + reg_write(cfg, UNICAM_DCS, val);
1197 +
1198 + val = reg_read(cfg, UNICAM_MISC);
1199 + set_field(&val, 1, UNICAM_FL0);
1200 + set_field(&val, 1, UNICAM_FL1);
1201 + reg_write(cfg, UNICAM_MISC, val);
1202 +
1203 + /* Enable peripheral */
1204 + reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
1205 +
1206 + /* Load image pointers */
1207 + reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
1208 +
1209 + /*
1210 + * Enable trigger only for the first frame to
1211 + * sync correctly to the FS from the source.
1212 + */
1213 + reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_TFC);
1214 +}
1215 +
1216 +static void unicam_disable(struct unicam_device *dev)
1217 +{
1218 + struct unicam_cfg *cfg = &dev->cfg;
1219 +
1220 + /* Analogue lane control disable */
1221 + reg_write_field(cfg, UNICAM_ANA, 1, UNICAM_DDL);
1222 +
1223 + /* Stop the output engine */
1224 + reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_SOE);
1225 +
1226 + /* Disable the data lanes. */
1227 + reg_write(cfg, UNICAM_DAT0, 0);
1228 + reg_write(cfg, UNICAM_DAT1, 0);
1229 +
1230 + if (dev->max_data_lanes > 2) {
1231 + reg_write(cfg, UNICAM_DAT2, 0);
1232 + reg_write(cfg, UNICAM_DAT3, 0);
1233 + }
1234 +
1235 + /* Peripheral reset */
1236 + reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
1237 + usleep_range(50, 100);
1238 + reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
1239 +
1240 + /* Disable peripheral */
1241 + reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
1242 +
1243 + /* Disable all lane clocks */
1244 + clk_write(cfg, 0);
1245 +}
1246 +
1247 +static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
1248 +{
1249 + struct unicam_device *dev = vb2_get_drv_priv(vq);
1250 + struct unicam_dmaqueue *dma_q = &dev->dma_queue;
1251 + struct unicam_buffer *buf, *tmp;
1252 + unsigned long addr = 0;
1253 + unsigned long flags;
1254 + int ret;
1255 +
1256 + spin_lock_irqsave(&dev->dma_queue_lock, flags);
1257 + buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
1258 + dev->cur_frm = buf;
1259 + dev->next_frm = buf;
1260 + list_del(&buf->list);
1261 + spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
1262 +
1263 + addr = vb2_dma_contig_plane_dma_addr(&dev->cur_frm->vb.vb2_buf, 0);
1264 + dev->sequence = 0;
1265 +
1266 + ret = unicam_runtime_get(dev);
1267 + if (ret < 0) {
1268 + unicam_dbg(3, dev, "unicam_runtime_get failed\n");
1269 + goto err_release_buffers;
1270 + }
1271 +
1272 + dev->active_data_lanes = dev->max_data_lanes;
1273 + if (dev->bus_type == V4L2_MBUS_CSI2 &&
1274 + v4l2_subdev_has_op(dev->sensor, video, g_mbus_config)) {
1275 + struct v4l2_mbus_config mbus_config;
1276 +
1277 + ret = v4l2_subdev_call(dev->sensor, video, g_mbus_config,
1278 + &mbus_config);
1279 + if (ret < 0) {
1280 + unicam_dbg(3, dev, "g_mbus_config failed\n");
1281 + goto err_pm_put;
1282 + }
1283 +
1284 + dev->active_data_lanes =
1285 + (mbus_config.flags & V4L2_MBUS_CSI2_LANE_MASK) >>
1286 + __ffs(V4L2_MBUS_CSI2_LANE_MASK);
1287 + if (!dev->active_data_lanes)
1288 + dev->active_data_lanes = dev->max_data_lanes;
1289 + }
1290 + if (dev->active_data_lanes > dev->max_data_lanes) {
1291 + unicam_err(dev, "Device has requested %u data lanes, which is >%u configured in DT\n",
1292 + dev->active_data_lanes, dev->max_data_lanes);
1293 + ret = -EINVAL;
1294 + goto err_pm_put;
1295 + }
1296 +
1297 + unicam_dbg(1, dev, "Running with %u data lanes\n",
1298 + dev->active_data_lanes);
1299 +
1300 + ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
1301 + if (ret) {
1302 + unicam_err(dev, "failed to set up clock\n");
1303 + goto err_pm_put;
1304 + }
1305 +
1306 + ret = clk_prepare_enable(dev->clock);
1307 + if (ret) {
1308 + unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
1309 + goto err_pm_put;
1310 + }
1311 + ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
1312 + if (ret < 0 && ret != -ENOIOCTLCMD) {
1313 + unicam_err(dev, "power on failed in subdev\n");
1314 + goto err_clock_unprepare;
1315 + }
1316 + dev->streaming = 1;
1317 +
1318 + unicam_start_rx(dev, addr);
1319 +
1320 + ret = v4l2_subdev_call(dev->sensor, video, s_stream, 1);
1321 + if (ret < 0) {
1322 + unicam_err(dev, "stream on failed in subdev\n");
1323 + goto err_disable_unicam;
1324 + }
1325 +
1326 + return 0;
1327 +
1328 +err_disable_unicam:
1329 + unicam_disable(dev);
1330 + v4l2_subdev_call(dev->sensor, core, s_power, 0);
1331 +err_clock_unprepare:
1332 + clk_disable_unprepare(dev->clock);
1333 +err_pm_put:
1334 + unicam_runtime_put(dev);
1335 +err_release_buffers:
1336 + list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
1337 + list_del(&buf->list);
1338 + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
1339 + }
1340 + if (dev->cur_frm != dev->next_frm)
1341 + vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
1342 + VB2_BUF_STATE_QUEUED);
1343 + vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
1344 + dev->next_frm = NULL;
1345 + dev->cur_frm = NULL;
1346 +
1347 + return ret;
1348 +}
1349 +
1350 +static void unicam_stop_streaming(struct vb2_queue *vq)
1351 +{
1352 + struct unicam_device *dev = vb2_get_drv_priv(vq);
1353 + struct unicam_dmaqueue *dma_q = &dev->dma_queue;
1354 + struct unicam_buffer *buf, *tmp;
1355 + unsigned long flags;
1356 +
1357 + if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
1358 + unicam_err(dev, "stream off failed in subdev\n");
1359 +
1360 + unicam_disable(dev);
1361 +
1362 + /* Release all active buffers */
1363 + spin_lock_irqsave(&dev->dma_queue_lock, flags);
1364 + list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
1365 + list_del(&buf->list);
1366 + vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1367 + }
1368 +
1369 + if (dev->cur_frm == dev->next_frm) {
1370 + vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1371 + } else {
1372 + vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1373 + vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
1374 + VB2_BUF_STATE_ERROR);
1375 + }
1376 + dev->cur_frm = NULL;
1377 + dev->next_frm = NULL;
1378 + spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
1379 +
1380 + if (v4l2_subdev_has_op(dev->sensor, core, s_power)) {
1381 + if (v4l2_subdev_call(dev->sensor, core, s_power, 0) < 0)
1382 + unicam_err(dev, "power off failed in subdev\n");
1383 + }
1384 +
1385 + clk_disable_unprepare(dev->clock);
1386 + unicam_runtime_put(dev);
1387 +}
1388 +
1389 +static int unicam_enum_input(struct file *file, void *priv,
1390 + struct v4l2_input *inp)
1391 +{
1392 + struct unicam_device *dev = video_drvdata(file);
1393 +
1394 + if (inp->index != 0)
1395 + return -EINVAL;
1396 +
1397 + inp->type = V4L2_INPUT_TYPE_CAMERA;
1398 + if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
1399 + inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
1400 + inp->std = 0;
1401 + } else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
1402 + inp->capabilities = V4L2_IN_CAP_STD;
1403 + if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
1404 + < 0)
1405 + inp->std = V4L2_STD_ALL;
1406 + } else {
1407 + inp->capabilities = 0;
1408 + inp->std = 0;
1409 + }
1410 + sprintf(inp->name, "Camera 0");
1411 + return 0;
1412 +}
1413 +
1414 +static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
1415 +{
1416 + *i = 0;
1417 +
1418 + return 0;
1419 +}
1420 +
1421 +static int unicam_s_input(struct file *file, void *priv, unsigned int i)
1422 +{
1423 + /*
1424 + * FIXME: Ideally we would like to be able to query the source
1425 + * subdevice for information over the input connectors it supports,
1426 + * and map that through in to a call to video_ops->s_routing.
1427 + * There is no infrastructure support for defining that within
1428 + * devicetree at present. Until that is implemented we can't
1429 + * map a user physical connector number to s_routing input number.
1430 + */
1431 + if (i > 0)
1432 + return -EINVAL;
1433 +
1434 + return 0;
1435 +}
1436 +
1437 +static int unicam_querystd(struct file *file, void *priv,
1438 + v4l2_std_id *std)
1439 +{
1440 + struct unicam_device *dev = video_drvdata(file);
1441 +
1442 + return v4l2_subdev_call(dev->sensor, video, querystd, std);
1443 +}
1444 +
1445 +static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
1446 +{
1447 + struct unicam_device *dev = video_drvdata(file);
1448 +
1449 + return v4l2_subdev_call(dev->sensor, video, g_std, std);
1450 +}
1451 +
1452 +static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
1453 +{
1454 + struct unicam_device *dev = video_drvdata(file);
1455 + int ret;
1456 + v4l2_std_id current_std;
1457 +
1458 + ret = v4l2_subdev_call(dev->sensor, video, g_std, &current_std);
1459 + if (ret)
1460 + return ret;
1461 +
1462 + if (std == current_std)
1463 + return 0;
1464 +
1465 + if (vb2_is_busy(&dev->buffer_queue))
1466 + return -EBUSY;
1467 +
1468 + ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
1469 +
1470 + /* Force recomputation of bytesperline */
1471 + dev->v_fmt.fmt.pix.bytesperline = 0;
1472 +
1473 + unicam_reset_format(dev);
1474 +
1475 + return ret;
1476 +}
1477 +
1478 +static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
1479 +{
1480 + struct unicam_device *dev = video_drvdata(file);
1481 +
1482 + return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
1483 +}
1484 +
1485 +static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
1486 +{
1487 + struct unicam_device *dev = video_drvdata(file);
1488 +
1489 + return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
1490 +}
1491 +
1492 +static int unicam_g_dv_timings(struct file *file, void *priv,
1493 + struct v4l2_dv_timings *timings)
1494 +{
1495 + struct unicam_device *dev = video_drvdata(file);
1496 +
1497 + return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
1498 +}
1499 +
1500 +static int unicam_s_dv_timings(struct file *file, void *priv,
1501 + struct v4l2_dv_timings *timings)
1502 +{
1503 + struct unicam_device *dev = video_drvdata(file);
1504 + struct v4l2_dv_timings current_timings;
1505 + int ret;
1506 +
1507 + ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
1508 + &current_timings);
1509 +
1510 + if (v4l2_match_dv_timings(timings, &current_timings, 0, false))
1511 + return 0;
1512 +
1513 + if (vb2_is_busy(&dev->buffer_queue))
1514 + return -EBUSY;
1515 +
1516 + ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
1517 +
1518 + /* Force recomputation of bytesperline */
1519 + dev->v_fmt.fmt.pix.bytesperline = 0;
1520 +
1521 + unicam_reset_format(dev);
1522 +
1523 + return ret;
1524 +}
1525 +
1526 +static int unicam_query_dv_timings(struct file *file, void *priv,
1527 + struct v4l2_dv_timings *timings)
1528 +{
1529 + struct unicam_device *dev = video_drvdata(file);
1530 +
1531 + return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
1532 +}
1533 +
1534 +static int unicam_enum_dv_timings(struct file *file, void *priv,
1535 + struct v4l2_enum_dv_timings *timings)
1536 +{
1537 + struct unicam_device *dev = video_drvdata(file);
1538 +
1539 + return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
1540 +}
1541 +
1542 +static int unicam_dv_timings_cap(struct file *file, void *priv,
1543 + struct v4l2_dv_timings_cap *cap)
1544 +{
1545 + struct unicam_device *dev = video_drvdata(file);
1546 +
1547 + return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
1548 +}
1549 +
1550 +static int unicam_subscribe_event(struct v4l2_fh *fh,
1551 + const struct v4l2_event_subscription *sub)
1552 +{
1553 + switch (sub->type) {
1554 + case V4L2_EVENT_SOURCE_CHANGE:
1555 + return v4l2_event_subscribe(fh, sub, 4, NULL);
1556 + }
1557 +
1558 + return v4l2_ctrl_subscribe_event(fh, sub);
1559 +}
1560 +
1561 +static int unicam_log_status(struct file *file, void *fh)
1562 +{
1563 + struct unicam_device *dev = video_drvdata(file);
1564 + struct unicam_cfg *cfg = &dev->cfg;
1565 + u32 reg;
1566 +
1567 + /* status for sub devices */
1568 + v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
1569 +
1570 + unicam_info(dev, "-----Receiver status-----\n");
1571 + unicam_info(dev, "V4L2 width/height: %ux%u\n",
1572 + dev->v_fmt.fmt.pix.width, dev->v_fmt.fmt.pix.height);
1573 + unicam_info(dev, "Mediabus format: %08x\n", dev->fmt->code);
1574 + unicam_info(dev, "V4L2 format: " V4L2_FOURCC_CONV "\n",
1575 + V4L2_FOURCC_CONV_ARGS(dev->v_fmt.fmt.pix.pixelformat));
1576 + reg = reg_read(&dev->cfg, UNICAM_IPIPE);
1577 + unicam_info(dev, "Unpacking/packing: %u / %u\n",
1578 + get_field(reg, UNICAM_PUM_MASK),
1579 + get_field(reg, UNICAM_PPM_MASK));
1580 + unicam_info(dev, "----Live data----\n");
1581 + unicam_info(dev, "Programmed stride: %4u\n",
1582 + reg_read(cfg, UNICAM_IBLS));
1583 + unicam_info(dev, "Detected resolution: %ux%u\n",
1584 + reg_read(cfg, UNICAM_IHSTA),
1585 + reg_read(cfg, UNICAM_IVSTA));
1586 + unicam_info(dev, "Write pointer: %08x\n",
1587 + reg_read(cfg, UNICAM_IBWP));
1588 +
1589 + return 0;
1590 +}
1591 +
1592 +static void unicam_notify(struct v4l2_subdev *sd,
1593 + unsigned int notification, void *arg)
1594 +{
1595 + struct unicam_device *dev =
1596 + container_of(sd->v4l2_dev, struct unicam_device, v4l2_dev);
1597 +
1598 + switch (notification) {
1599 + case V4L2_DEVICE_NOTIFY_EVENT:
1600 + v4l2_event_queue(&dev->video_dev, arg);
1601 + break;
1602 + default:
1603 + break;
1604 + }
1605 +}
1606 +
1607 +static const struct vb2_ops unicam_video_qops = {
1608 + .wait_prepare = vb2_ops_wait_prepare,
1609 + .wait_finish = vb2_ops_wait_finish,
1610 + .queue_setup = unicam_queue_setup,
1611 + .buf_prepare = unicam_buffer_prepare,
1612 + .buf_queue = unicam_buffer_queue,
1613 + .start_streaming = unicam_start_streaming,
1614 + .stop_streaming = unicam_stop_streaming,
1615 +};
1616 +
1617 +/* unicam capture driver file operations */
1618 +static const struct v4l2_file_operations unicam_fops = {
1619 + .owner = THIS_MODULE,
1620 + .open = v4l2_fh_open,
1621 + .release = vb2_fop_release,
1622 + .read = vb2_fop_read,
1623 + .poll = vb2_fop_poll,
1624 + .unlocked_ioctl = video_ioctl2,
1625 + .mmap = vb2_fop_mmap,
1626 +};
1627 +
1628 +/* unicam capture ioctl operations */
1629 +static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
1630 + .vidioc_querycap = unicam_querycap,
1631 + .vidioc_enum_fmt_vid_cap = unicam_enum_fmt_vid_cap,
1632 + .vidioc_g_fmt_vid_cap = unicam_g_fmt_vid_cap,
1633 + .vidioc_s_fmt_vid_cap = unicam_s_fmt_vid_cap,
1634 + .vidioc_try_fmt_vid_cap = unicam_try_fmt_vid_cap,
1635 +
1636 + .vidioc_enum_input = unicam_enum_input,
1637 + .vidioc_g_input = unicam_g_input,
1638 + .vidioc_s_input = unicam_s_input,
1639 +
1640 + .vidioc_querystd = unicam_querystd,
1641 + .vidioc_s_std = unicam_s_std,
1642 + .vidioc_g_std = unicam_g_std,
1643 +
1644 + .vidioc_g_edid = unicam_g_edid,
1645 + .vidioc_s_edid = unicam_s_edid,
1646 +
1647 + .vidioc_s_dv_timings = unicam_s_dv_timings,
1648 + .vidioc_g_dv_timings = unicam_g_dv_timings,
1649 + .vidioc_query_dv_timings = unicam_query_dv_timings,
1650 + .vidioc_enum_dv_timings = unicam_enum_dv_timings,
1651 + .vidioc_dv_timings_cap = unicam_dv_timings_cap,
1652 +
1653 + .vidioc_reqbufs = vb2_ioctl_reqbufs,
1654 + .vidioc_create_bufs = vb2_ioctl_create_bufs,
1655 + .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1656 + .vidioc_querybuf = vb2_ioctl_querybuf,
1657 + .vidioc_qbuf = vb2_ioctl_qbuf,
1658 + .vidioc_dqbuf = vb2_ioctl_dqbuf,
1659 + .vidioc_expbuf = vb2_ioctl_expbuf,
1660 + .vidioc_streamon = vb2_ioctl_streamon,
1661 + .vidioc_streamoff = vb2_ioctl_streamoff,
1662 +
1663 + .vidioc_log_status = unicam_log_status,
1664 + .vidioc_subscribe_event = unicam_subscribe_event,
1665 + .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1666 +};
1667 +
1668 +/*
1669 + * Adds an entry to the active_fmts array
1670 + * Returns non-zero if attempting to write off the end of the array.
1671 + */
1672 +static int unicam_add_active_format(struct unicam_device *unicam,
1673 + const struct unicam_fmt *fmt)
1674 +{
1675 + //Ensure we don't run off the end of the array.
1676 + if (unicam->num_active_fmt >= MAX_POSSIBLE_PIX_FMTS)
1677 + return 1;
1678 +
1679 + unicam->active_fmts[unicam->num_active_fmt] = *fmt;
1680 + unicam_dbg(2, unicam,
1681 + "matched fourcc: " V4L2_FOURCC_CONV ": code: %04x idx: %d\n",
1682 + V4L2_FOURCC_CONV_ARGS(fmt->fourcc),
1683 + fmt->code, unicam->num_active_fmt);
1684 + unicam->num_active_fmt++;
1685 +
1686 + return 0;
1687 +}
1688 +
1689 +static int
1690 +unicam_async_bound(struct v4l2_async_notifier *notifier,
1691 + struct v4l2_subdev *subdev,
1692 + struct v4l2_async_subdev *asd)
1693 +{
1694 + struct unicam_device *unicam = container_of(notifier->v4l2_dev,
1695 + struct unicam_device, v4l2_dev);
1696 + struct v4l2_subdev_mbus_code_enum mbus_code;
1697 + int ret = 0;
1698 + int j;
1699 +
1700 + if (unicam->sensor) {
1701 + unicam_info(unicam, "Rejecting subdev %s (Already set!!)",
1702 + subdev->name);
1703 + return 0;
1704 + }
1705 +
1706 + unicam->sensor = subdev;
1707 + unicam_dbg(1, unicam, "Using sensor %s for capture\n", subdev->name);
1708 +
1709 + /* Enumerate sub device formats and enable all matching local formats */
1710 + unicam->num_active_fmt = 0;
1711 + unicam_dbg(2, unicam, "Get supported formats...\n");
1712 + for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
1713 + const struct unicam_fmt *fmt = NULL;
1714 + int k;
1715 +
1716 + memset(&mbus_code, 0, sizeof(mbus_code));
1717 + mbus_code.index = j;
1718 + ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
1719 + NULL, &mbus_code);
1720 + if (ret < 0) {
1721 + unicam_dbg(2, unicam,
1722 + "subdev->enum_mbus_code idx %d returned %d - continue\n",
1723 + j, ret);
1724 + continue;
1725 + }
1726 +
1727 + unicam_dbg(2, unicam, "subdev %s: code: %04x idx: %d\n",
1728 + subdev->name, mbus_code.code, j);
1729 +
1730 + for (k = 0; k < ARRAY_SIZE(formats); k++) {
1731 + if (mbus_code.code == formats[k].code) {
1732 + fmt = &formats[k];
1733 + break;
1734 + }
1735 + }
1736 + unicam_dbg(2, unicam, "fmt %04x returned as %p, V4L2 FOURCC %04x, csi_dt %02X\n",
1737 + mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
1738 + fmt ? fmt->csi_dt : 0);
1739 + if (fmt) {
1740 + if (unicam_add_active_format(unicam, fmt)) {
1741 + unicam_dbg(1, unicam, "Active fmt list truncated\n");
1742 + break;
1743 + }
1744 + }
1745 + }
1746 + unicam_dbg(2, unicam,
1747 + "Done all formats\n");
1748 + dump_active_formats(unicam);
1749 +
1750 + return 0;
1751 +}
1752 +
1753 +static int unicam_probe_complete(struct unicam_device *unicam)
1754 +{
1755 + struct video_device *vdev;
1756 + struct vb2_queue *q;
1757 + struct v4l2_mbus_framefmt mbus_fmt = {0};
1758 + const struct unicam_fmt *fmt;
1759 + int ret;
1760 +
1761 + v4l2_set_subdev_hostdata(unicam->sensor, unicam);
1762 +
1763 + unicam->v4l2_dev.notify = unicam_notify;
1764 +
1765 + unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
1766 + if (!unicam->sensor_config)
1767 + return -ENOMEM;
1768 +
1769 + ret = __subdev_get_format(unicam, &mbus_fmt);
1770 + if (ret) {
1771 + unicam_err(unicam, "Failed to get_format - ret %d\n", ret);
1772 + return ret;
1773 + }
1774 +
1775 + fmt = find_format_by_code(unicam, mbus_fmt.code);
1776 + if (!fmt) {
1777 + /* Default image format not valid. Choose first active fmt. */
1778 + fmt = &unicam->active_fmts[0];
1779 + mbus_fmt.code = fmt->code;
1780 + ret = __subdev_set_format(unicam, &mbus_fmt);
1781 + if (ret)
1782 + return -EINVAL;
1783 + }
1784 + if (mbus_fmt.field != V4L2_FIELD_NONE) {
1785 + /* Interlaced not supported - disable it now. */
1786 + mbus_fmt.field = V4L2_FIELD_NONE;
1787 + ret = __subdev_set_format(unicam, &mbus_fmt);
1788 + if (ret)
1789 + return -EINVAL;
1790 + }
1791 +
1792 + unicam->fmt = fmt;
1793 + unicam->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
1794 +
1795 + /* Read current subdev format */
1796 + unicam_reset_format(unicam);
1797 +
1798 + if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
1799 + v4l2_std_id tvnorms;
1800 +
1801 + if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
1802 + g_tvnorms)))
1803 + /*
1804 + * Subdevice should not advertise s_std but not
1805 + * g_tvnorms
1806 + */
1807 + return -EINVAL;
1808 +
1809 + ret = v4l2_subdev_call(unicam->sensor, video,
1810 + g_tvnorms, &tvnorms);
1811 + if (WARN_ON(ret))
1812 + return -EINVAL;
1813 + unicam->video_dev.tvnorms |= tvnorms;
1814 + }
1815 +
1816 + spin_lock_init(&unicam->dma_queue_lock);
1817 + mutex_init(&unicam->lock);
1818 +
1819 + /* Add controls from the subdevice */
1820 + ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
1821 + unicam->sensor->ctrl_handler, NULL);
1822 + if (ret < 0)
1823 + return ret;
1824 +
1825 + q = &unicam->buffer_queue;
1826 + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1827 + q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
1828 + q->drv_priv = unicam;
1829 + q->ops = &unicam_video_qops;
1830 + q->mem_ops = &vb2_dma_contig_memops;
1831 + q->buf_struct_size = sizeof(struct unicam_buffer);
1832 + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1833 + q->lock = &unicam->lock;
1834 + q->min_buffers_needed = 2;
1835 + q->dev = &unicam->pdev->dev;
1836 +
1837 + ret = vb2_queue_init(q);
1838 + if (ret) {
1839 + unicam_err(unicam, "vb2_queue_init() failed\n");
1840 + return ret;
1841 + }
1842 +
1843 + INIT_LIST_HEAD(&unicam->dma_queue.active);
1844 +
1845 + vdev = &unicam->video_dev;
1846 + strlcpy(vdev->name, UNICAM_MODULE_NAME, sizeof(vdev->name));
1847 + vdev->release = video_device_release_empty;
1848 + vdev->fops = &unicam_fops;
1849 + vdev->ioctl_ops = &unicam_ioctl_ops;
1850 + vdev->v4l2_dev = &unicam->v4l2_dev;
1851 + vdev->vfl_dir = VFL_DIR_RX;
1852 + vdev->queue = q;
1853 + vdev->lock = &unicam->lock;
1854 + vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
1855 + V4L2_CAP_READWRITE;
1856 +
1857 + /* If the source has no controls then remove our ctrl handler. */
1858 + if (list_empty(&unicam->ctrl_handler.ctrls))
1859 + unicam->v4l2_dev.ctrl_handler = NULL;
1860 +
1861 + video_set_drvdata(vdev, unicam);
1862 + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1863 + if (ret) {
1864 + unicam_err(unicam, "Unable to register video device.\n");
1865 + return ret;
1866 + }
1867 +
1868 + if (!v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
1869 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_STD);
1870 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_STD);
1871 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUMSTD);
1872 + }
1873 + if (!v4l2_subdev_has_op(unicam->sensor, video, querystd))
1874 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERYSTD);
1875 + if (!v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
1876 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_EDID);
1877 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_EDID);
1878 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_DV_TIMINGS_CAP);
1879 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_DV_TIMINGS);
1880 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_DV_TIMINGS);
1881 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_DV_TIMINGS);
1882 + v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERY_DV_TIMINGS);
1883 + }
1884 +
1885 + ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev);
1886 + if (ret) {
1887 + unicam_err(unicam,
1888 + "Unable to register subdev nodes.\n");
1889 + video_unregister_device(&unicam->video_dev);
1890 + return ret;
1891 + }
1892 +
1893 + return 0;
1894 +}
1895 +
1896 +static int unicam_async_complete(struct v4l2_async_notifier *notifier)
1897 +{
1898 + struct unicam_device *unicam = container_of(notifier->v4l2_dev,
1899 + struct unicam_device, v4l2_dev);
1900 +
1901 + return unicam_probe_complete(unicam);
1902 +}
1903 +
1904 +static const struct v4l2_async_notifier_operations unicam_async_ops = {
1905 + .bound = unicam_async_bound,
1906 + .complete = unicam_async_complete,
1907 +};
1908 +
1909 +static int of_unicam_connect_subdevs(struct unicam_device *dev)
1910 +{
1911 + struct platform_device *pdev = dev->pdev;
1912 + struct device_node *parent, *ep_node = NULL, *remote_ep = NULL,
1913 + *sensor_node = NULL;
1914 + struct v4l2_fwnode_endpoint *ep;
1915 + struct v4l2_async_subdev *asd;
1916 + struct v4l2_async_subdev **subdevs = NULL;
1917 + unsigned int peripheral_data_lanes;
1918 + int ret = -EINVAL;
1919 + unsigned int lane;
1920 +
1921 + parent = pdev->dev.of_node;
1922 +
1923 + asd = &dev->asd;
1924 + ep = &dev->endpoint;
1925 +
1926 + ep_node = of_graph_get_next_endpoint(parent, NULL);
1927 + if (!ep_node) {
1928 + unicam_dbg(3, dev, "can't get next endpoint\n");
1929 + goto cleanup_exit;
1930 + }
1931 +
1932 + unicam_dbg(3, dev, "ep_node is %s\n", ep_node->name);
1933 +
1934 + v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), ep);
1935 +
1936 + for (lane = 0; lane < ep->bus.mipi_csi2.num_data_lanes; lane++) {
1937 + if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
1938 + unicam_err(dev, "Local endpoint - data lane reordering not supported\n");
1939 + goto cleanup_exit;
1940 + }
1941 + }
1942 +
1943 + peripheral_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
1944 +
1945 + sensor_node = of_graph_get_remote_port_parent(ep_node);
1946 + if (!sensor_node) {
1947 + unicam_dbg(3, dev, "can't get remote parent\n");
1948 + goto cleanup_exit;
1949 + }
1950 + unicam_dbg(3, dev, "sensor_node is %s\n", sensor_node->name);
1951 + asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
1952 + asd->match.fwnode = of_fwnode_handle(sensor_node);
1953 +
1954 + remote_ep = of_graph_get_remote_endpoint(ep_node);
1955 + if (!remote_ep) {
1956 + unicam_dbg(3, dev, "can't get remote-endpoint\n");
1957 + goto cleanup_exit;
1958 + }
1959 + unicam_dbg(3, dev, "remote_ep is %s\n", remote_ep->name);
1960 + v4l2_fwnode_endpoint_parse(of_fwnode_handle(remote_ep), ep);
1961 + unicam_dbg(3, dev, "parsed remote_ep to endpoint. nr_of_link_frequencies %u, bus_type %u\n",
1962 + ep->nr_of_link_frequencies, ep->bus_type);
1963 +
1964 + switch (ep->bus_type) {
1965 + case V4L2_MBUS_CSI2:
1966 + if (ep->bus.mipi_csi2.num_data_lanes >
1967 + peripheral_data_lanes) {
1968 + unicam_err(dev, "Subdevice %s wants too many data lanes (%u > %u)\n",
1969 + sensor_node->name,
1970 + ep->bus.mipi_csi2.num_data_lanes,
1971 + peripheral_data_lanes);
1972 + goto cleanup_exit;
1973 + }
1974 + for (lane = 0;
1975 + lane < ep->bus.mipi_csi2.num_data_lanes;
1976 + lane++) {
1977 + if (ep->bus.mipi_csi2.data_lanes[lane] != lane + 1) {
1978 + unicam_err(dev, "Subdevice %s - incompatible data lane config\n",
1979 + sensor_node->name);
1980 + goto cleanup_exit;
1981 + }
1982 + }
1983 + dev->max_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
1984 + dev->bus_flags = ep->bus.mipi_csi2.flags;
1985 + break;
1986 + case V4L2_MBUS_CCP2:
1987 + if (ep->bus.mipi_csi1.clock_lane != 0 ||
1988 + ep->bus.mipi_csi1.data_lane != 1) {
1989 + unicam_err(dev, "Subdevice %s incompatible lane config\n",
1990 + sensor_node->name);
1991 + goto cleanup_exit;
1992 + }
1993 + dev->max_data_lanes = 1;
1994 + dev->bus_flags = ep->bus.mipi_csi1.strobe;
1995 + break;
1996 + default:
1997 + /* Unsupported bus type */
1998 + unicam_err(dev, "sub-device %s is not a CSI2 or CCP2 device %d\n",
1999 + sensor_node->name, ep->bus_type);
2000 + goto cleanup_exit;
2001 + }
2002 +
2003 + /* Store bus type - CSI2 or CCP2 */
2004 + dev->bus_type = ep->bus_type;
2005 + unicam_dbg(3, dev, "bus_type is %d\n", dev->bus_type);
2006 +
2007 + /* Store Virtual Channel number */
2008 + dev->virtual_channel = ep->base.id;
2009 +
2010 + unicam_dbg(3, dev, "v4l2-endpoint: %s\n",
2011 + dev->bus_type == V4L2_MBUS_CSI2 ? "CSI2" : "CCP2");
2012 + unicam_dbg(3, dev, "Virtual Channel=%d\n", dev->virtual_channel);
2013 + if (dev->bus_type == V4L2_MBUS_CSI2)
2014 + unicam_dbg(3, dev, "flags=0x%08x\n", ep->bus.mipi_csi2.flags);
2015 + unicam_dbg(3, dev, "num_data_lanes=%d\n", dev->max_data_lanes);
2016 +
2017 + unicam_dbg(1, dev, "found sub-device %s\n", sensor_node->name);
2018 +
2019 + subdevs = devm_kzalloc(&dev->pdev->dev, sizeof(*subdevs), GFP_KERNEL);
2020 + if (!subdevs) {
2021 + ret = -ENOMEM;
2022 + goto cleanup_exit;
2023 + }
2024 + subdevs[0] = asd;
2025 + dev->notifier.subdevs = subdevs;
2026 + dev->notifier.num_subdevs = 1;
2027 + dev->notifier.ops = &unicam_async_ops;
2028 + ret = v4l2_async_notifier_register(&dev->v4l2_dev,
2029 + &dev->notifier);
2030 + if (ret) {
2031 + unicam_err(dev, "Error registering async notifier - ret %d\n",
2032 + ret);
2033 + ret = -EINVAL;
2034 + }
2035 +
2036 +cleanup_exit:
2037 + if (remote_ep)
2038 + of_node_put(remote_ep);
2039 + if (sensor_node)
2040 + of_node_put(sensor_node);
2041 + if (ep_node)
2042 + of_node_put(ep_node);
2043 +
2044 + return ret;
2045 +}
2046 +
2047 +static int unicam_probe(struct platform_device *pdev)
2048 +{
2049 + struct unicam_cfg *unicam_cfg;
2050 + struct unicam_device *unicam;
2051 + struct v4l2_ctrl_handler *hdl;
2052 + struct resource *res;
2053 + int ret;
2054 +
2055 + unicam = devm_kzalloc(&pdev->dev, sizeof(*unicam), GFP_KERNEL);
2056 + if (!unicam)
2057 + return -ENOMEM;
2058 +
2059 + unicam->pdev = pdev;
2060 + unicam_cfg = &unicam->cfg;
2061 +
2062 + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2063 + unicam_cfg->base = devm_ioremap_resource(&pdev->dev, res);
2064 + if (IS_ERR(unicam_cfg->base)) {
2065 + unicam_err(unicam, "Failed to get main io block\n");
2066 + return PTR_ERR(unicam_cfg->base);
2067 + }
2068 +
2069 + res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2070 + unicam_cfg->clk_gate_base = devm_ioremap_resource(&pdev->dev, res);
2071 + if (IS_ERR(unicam_cfg->clk_gate_base)) {
2072 + unicam_err(unicam, "Failed to get 2nd io block\n");
2073 + return PTR_ERR(unicam_cfg->clk_gate_base);
2074 + }
2075 +
2076 + unicam->clock = devm_clk_get(&pdev->dev, "lp");
2077 + if (IS_ERR(unicam->clock)) {
2078 + unicam_err(unicam, "Failed to get clock\n");
2079 + return PTR_ERR(unicam->clock);
2080 + }
2081 +
2082 + ret = platform_get_irq(pdev, 0);
2083 + if (ret <= 0) {
2084 + dev_err(&pdev->dev, "No IRQ resource\n");
2085 + return -ENODEV;
2086 + }
2087 +
2088 + ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
2089 + "unicam_capture0", unicam);
2090 + if (ret) {
2091 + dev_err(&pdev->dev, "Unable to request interrupt\n");
2092 + return -EINVAL;
2093 + }
2094 +
2095 + ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
2096 + if (ret) {
2097 + unicam_err(unicam,
2098 + "Unable to register v4l2 device.\n");
2099 + return ret;
2100 + }
2101 +
2102 + /* Reserve space for the controls */
2103 + hdl = &unicam->ctrl_handler;
2104 + ret = v4l2_ctrl_handler_init(hdl, 16);
2105 + if (ret < 0)
2106 + goto probe_out_v4l2_unregister;
2107 + unicam->v4l2_dev.ctrl_handler = hdl;
2108 +
2109 + /* set the driver data in platform device */
2110 + platform_set_drvdata(pdev, unicam);
2111 +
2112 + ret = of_unicam_connect_subdevs(unicam);
2113 + if (ret) {
2114 + dev_err(&pdev->dev, "Failed to connect subdevs\n");
2115 + goto free_hdl;
2116 + }
2117 +
2118 + /* Enable the block power domain */
2119 + pm_runtime_enable(&pdev->dev);
2120 +
2121 + return 0;
2122 +
2123 +free_hdl:
2124 + v4l2_ctrl_handler_free(hdl);
2125 +probe_out_v4l2_unregister:
2126 + v4l2_device_unregister(&unicam->v4l2_dev);
2127 + return ret;
2128 +}
2129 +
2130 +static int unicam_remove(struct platform_device *pdev)
2131 +{
2132 + struct unicam_device *unicam = platform_get_drvdata(pdev);
2133 +
2134 + unicam_dbg(2, unicam, "%s\n", __func__);
2135 +
2136 + pm_runtime_disable(&pdev->dev);
2137 +
2138 + v4l2_async_notifier_unregister(&unicam->notifier);
2139 + v4l2_ctrl_handler_free(&unicam->ctrl_handler);
2140 + v4l2_device_unregister(&unicam->v4l2_dev);
2141 + video_unregister_device(&unicam->video_dev);
2142 + if (unicam->sensor_config)
2143 + v4l2_subdev_free_pad_config(unicam->sensor_config);
2144 +
2145 + return 0;
2146 +}
2147 +
2148 +static const struct of_device_id unicam_of_match[] = {
2149 + { .compatible = "brcm,bcm2835-unicam", },
2150 + { /* sentinel */ },
2151 +};
2152 +MODULE_DEVICE_TABLE(of, unicam_of_match);
2153 +
2154 +static struct platform_driver unicam_driver = {
2155 + .probe = unicam_probe,
2156 + .remove = unicam_remove,
2157 + .driver = {
2158 + .name = UNICAM_MODULE_NAME,
2159 + .of_match_table = of_match_ptr(unicam_of_match),
2160 + },
2161 +};
2162 +
2163 +module_platform_driver(unicam_driver);
2164 +
2165 +MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.org>");
2166 +MODULE_DESCRIPTION("BCM2835 Unicam driver");
2167 +MODULE_LICENSE("GPL");
2168 +MODULE_VERSION(UNICAM_VERSION);
2169 --- /dev/null
2170 +++ b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
2171 @@ -0,0 +1,266 @@
2172 +/* SPDX-License-Identifier: GPL-2.0-only */
2173 +
2174 +/*
2175 + * Copyright (C) 2017 Raspberry Pi Trading.
2176 + * Dave Stevenson <dave.stevenson@raspberrypi.org>
2177 + *
2178 + * This program is free software; you can redistribute it and/or modify
2179 + * it under the terms of the GNU General Public License version 2 as
2180 + * published by the Free Software Foundation.
2181 + *
2182 + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
2183 + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
2184 + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
2185 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
2186 + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
2187 + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
2188 + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
2189 + * SOFTWARE.
2190 + */
2191 +
2192 +#ifndef VC4_REGS_UNICAM_H
2193 +#define VC4_REGS_UNICAM_H
2194 +
2195 +/*
2196 + * The following values are taken from files found within the code drop
2197 + * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
2198 + * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
2199 + * They have been modified to be only the register offset.
2200 + */
2201 +#define UNICAM_CTRL 0x000
2202 +#define UNICAM_STA 0x004
2203 +#define UNICAM_ANA 0x008
2204 +#define UNICAM_PRI 0x00c
2205 +#define UNICAM_CLK 0x010
2206 +#define UNICAM_CLT 0x014
2207 +#define UNICAM_DAT0 0x018
2208 +#define UNICAM_DAT1 0x01c
2209 +#define UNICAM_DAT2 0x020
2210 +#define UNICAM_DAT3 0x024
2211 +#define UNICAM_DLT 0x028
2212 +#define UNICAM_CMP0 0x02c
2213 +#define UNICAM_CMP1 0x030
2214 +#define UNICAM_CAP0 0x034
2215 +#define UNICAM_CAP1 0x038
2216 +#define UNICAM_ICTL 0x100
2217 +#define UNICAM_ISTA 0x104
2218 +#define UNICAM_IDI0 0x108
2219 +#define UNICAM_IPIPE 0x10c
2220 +#define UNICAM_IBSA0 0x110
2221 +#define UNICAM_IBEA0 0x114
2222 +#define UNICAM_IBLS 0x118
2223 +#define UNICAM_IBWP 0x11c
2224 +#define UNICAM_IHWIN 0x120
2225 +#define UNICAM_IHSTA 0x124
2226 +#define UNICAM_IVWIN 0x128
2227 +#define UNICAM_IVSTA 0x12c
2228 +#define UNICAM_ICC 0x130
2229 +#define UNICAM_ICS 0x134
2230 +#define UNICAM_IDC 0x138
2231 +#define UNICAM_IDPO 0x13c
2232 +#define UNICAM_IDCA 0x140
2233 +#define UNICAM_IDCD 0x144
2234 +#define UNICAM_IDS 0x148
2235 +#define UNICAM_DCS 0x200
2236 +#define UNICAM_DBSA0 0x204
2237 +#define UNICAM_DBEA0 0x208
2238 +#define UNICAM_DBWP 0x20c
2239 +#define UNICAM_DBCTL 0x300
2240 +#define UNICAM_IBSA1 0x304
2241 +#define UNICAM_IBEA1 0x308
2242 +#define UNICAM_IDI1 0x30c
2243 +#define UNICAM_DBSA1 0x310
2244 +#define UNICAM_DBEA1 0x314
2245 +#define UNICAM_MISC 0x400
2246 +
2247 +/*
2248 + * The following bitmasks are from the kernel released by Broadcom
2249 + * for Android - https://android.googlesource.com/kernel/bcm/
2250 + * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
2251 + * Unicam block as BCM2835, as defined in eg
2252 + * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
2253 + * Values reworked to use the kernel BIT and GENMASK macros.
2254 + *
2255 + * Some of the bit mnenomics have been amended to match the datasheet.
2256 + */
2257 +/* UNICAM_CTRL Register */
2258 +#define UNICAM_CPE BIT(0)
2259 +#define UNICAM_MEM BIT(1)
2260 +#define UNICAM_CPR BIT(2)
2261 +#define UNICAM_CPM_MASK GENMASK(3, 3)
2262 +#define UNICAM_CPM_CSI2 0
2263 +#define UNICAM_CPM_CCP2 1
2264 +#define UNICAM_SOE BIT(4)
2265 +#define UNICAM_DCM_MASK GENMASK(5, 5)
2266 +#define UNICAM_DCM_STROBE 0
2267 +#define UNICAM_DCM_DATA 1
2268 +#define UNICAM_SLS BIT(6)
2269 +#define UNICAM_PFT_MASK GENMASK(11, 8)
2270 +#define UNICAM_OET_MASK GENMASK(20, 12)
2271 +
2272 +/* UNICAM_STA Register */
2273 +#define UNICAM_SYN BIT(0)
2274 +#define UNICAM_CS BIT(1)
2275 +#define UNICAM_SBE BIT(2)
2276 +#define UNICAM_PBE BIT(3)
2277 +#define UNICAM_HOE BIT(4)
2278 +#define UNICAM_PLE BIT(5)
2279 +#define UNICAM_SSC BIT(6)
2280 +#define UNICAM_CRCE BIT(7)
2281 +#define UNICAM_OES BIT(8)
2282 +#define UNICAM_IFO BIT(9)
2283 +#define UNICAM_OFO BIT(10)
2284 +#define UNICAM_BFO BIT(11)
2285 +#define UNICAM_DL BIT(12)
2286 +#define UNICAM_PS BIT(13)
2287 +#define UNICAM_IS BIT(14)
2288 +#define UNICAM_PI0 BIT(15)
2289 +#define UNICAM_PI1 BIT(16)
2290 +#define UNICAM_FSI_S BIT(17)
2291 +#define UNICAM_FEI_S BIT(18)
2292 +#define UNICAM_LCI_S BIT(19)
2293 +#define UNICAM_BUF0_RDY BIT(20)
2294 +#define UNICAM_BUF0_NO BIT(21)
2295 +#define UNICAM_BUF1_RDY BIT(22)
2296 +#define UNICAM_BUF1_NO BIT(23)
2297 +#define UNICAM_DI BIT(24)
2298 +
2299 +#define UNICAM_STA_MASK_ALL \
2300 + (UNICAM_DL + \
2301 + UNICAM_SBE + \
2302 + UNICAM_PBE + \
2303 + UNICAM_HOE + \
2304 + UNICAM_PLE + \
2305 + UNICAM_SSC + \
2306 + UNICAM_CRCE + \
2307 + UNICAM_IFO + \
2308 + UNICAM_OFO + \
2309 + UNICAM_PS + \
2310 + UNICAM_PI0 + \
2311 + UNICAM_PI1)
2312 +
2313 +/* UNICAM_ANA Register */
2314 +#define UNICAM_APD BIT(0)
2315 +#define UNICAM_BPD BIT(1)
2316 +#define UNICAM_AR BIT(2)
2317 +#define UNICAM_DDL BIT(3)
2318 +#define UNICAM_CTATADJ_MASK GENMASK(7, 4)
2319 +#define UNICAM_PTATADJ_MASK GENMASK(11, 8)
2320 +
2321 +/* UNICAM_PRI Register */
2322 +#define UNICAM_PE BIT(0)
2323 +#define UNICAM_PT_MASK GENMASK(2, 1)
2324 +#define UNICAM_NP_MASK GENMASK(7, 4)
2325 +#define UNICAM_PP_MASK GENMASK(11, 8)
2326 +#define UNICAM_BS_MASK GENMASK(15, 12)
2327 +#define UNICAM_BL_MASK GENMASK(17, 16)
2328 +
2329 +/* UNICAM_CLK Register */
2330 +#define UNICAM_CLE BIT(0)
2331 +#define UNICAM_CLPD BIT(1)
2332 +#define UNICAM_CLLPE BIT(2)
2333 +#define UNICAM_CLHSE BIT(3)
2334 +#define UNICAM_CLTRE BIT(4)
2335 +#define UNICAM_CLAC_MASK GENMASK(8, 5)
2336 +#define UNICAM_CLSTE BIT(29)
2337 +
2338 +/* UNICAM_CLT Register */
2339 +#define UNICAM_CLT1_MASK GENMASK(7, 0)
2340 +#define UNICAM_CLT2_MASK GENMASK(15, 8)
2341 +
2342 +/* UNICAM_DATn Registers */
2343 +#define UNICAM_DLE BIT(0)
2344 +#define UNICAM_DLPD BIT(1)
2345 +#define UNICAM_DLLPE BIT(2)
2346 +#define UNICAM_DLHSE BIT(3)
2347 +#define UNICAM_DLTRE BIT(4)
2348 +#define UNICAM_DLSM BIT(5)
2349 +#define UNICAM_DLFO BIT(28)
2350 +#define UNICAM_DLSTE BIT(29)
2351 +
2352 +#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE + UNICAM_DLFO)
2353 +
2354 +/* UNICAM_DLT Register */
2355 +#define UNICAM_DLT1_MASK GENMASK(7, 0)
2356 +#define UNICAM_DLT2_MASK GENMASK(15, 8)
2357 +#define UNICAM_DLT3_MASK GENMASK(23, 16)
2358 +
2359 +/* UNICAM_ICTL Register */
2360 +#define UNICAM_FSIE BIT(0)
2361 +#define UNICAM_FEIE BIT(1)
2362 +#define UNICAM_IBOB BIT(2)
2363 +#define UNICAM_FCM BIT(3)
2364 +#define UNICAM_TFC BIT(4)
2365 +#define UNICAM_LIP_MASK GENMASK(6, 5)
2366 +#define UNICAM_LCIE_MASK GENMASK(28, 16)
2367 +
2368 +/* UNICAM_IDI0/1 Register */
2369 +#define UNICAM_ID0_MASK GENMASK(7, 0)
2370 +#define UNICAM_ID1_MASK GENMASK(15, 8)
2371 +#define UNICAM_ID2_MASK GENMASK(23, 16)
2372 +#define UNICAM_ID3_MASK GENMASK(31, 24)
2373 +
2374 +/* UNICAM_ISTA Register */
2375 +#define UNICAM_FSI BIT(0)
2376 +#define UNICAM_FEI BIT(1)
2377 +#define UNICAM_LCI BIT(2)
2378 +
2379 +#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI + UNICAM_FEI + UNICAM_LCI)
2380 +
2381 +/* UNICAM_IPIPE Register */
2382 +#define UNICAM_PUM_MASK GENMASK(2, 0)
2383 + /* Unpacking modes */
2384 + #define UNICAM_PUM_NONE 0
2385 + #define UNICAM_PUM_UNPACK6 1
2386 + #define UNICAM_PUM_UNPACK7 2
2387 + #define UNICAM_PUM_UNPACK8 3
2388 + #define UNICAM_PUM_UNPACK10 4
2389 + #define UNICAM_PUM_UNPACK12 5
2390 + #define UNICAM_PUM_UNPACK14 6
2391 + #define UNICAM_PUM_UNPACK16 7
2392 +#define UNICAM_DDM_MASK GENMASK(6, 3)
2393 +#define UNICAM_PPM_MASK GENMASK(9, 7)
2394 + /* Packing modes */
2395 + #define UNICAM_PPM_NONE 0
2396 + #define UNICAM_PPM_PACK8 1
2397 + #define UNICAM_PPM_PACK10 2
2398 + #define UNICAM_PPM_PACK12 3
2399 + #define UNICAM_PPM_PACK14 4
2400 + #define UNICAM_PPM_PACK16 5
2401 +#define UNICAM_DEM_MASK GENMASK(11, 10)
2402 +#define UNICAM_DEBL_MASK GENMASK(14, 12)
2403 +#define UNICAM_ICM_MASK GENMASK(16, 15)
2404 +#define UNICAM_IDM_MASK GENMASK(17, 17)
2405 +
2406 +/* UNICAM_ICC Register */
2407 +#define UNICAM_ICFL_MASK GENMASK(4, 0)
2408 +#define UNICAM_ICFH_MASK GENMASK(9, 5)
2409 +#define UNICAM_ICST_MASK GENMASK(12, 10)
2410 +#define UNICAM_ICLT_MASK GENMASK(15, 13)
2411 +#define UNICAM_ICLL_MASK GENMASK(31, 16)
2412 +
2413 +/* UNICAM_DCS Register */
2414 +#define UNICAM_DIE BIT(0)
2415 +#define UNICAM_DIM BIT(1)
2416 +#define UNICAM_DBOB BIT(3)
2417 +#define UNICAM_FDE BIT(4)
2418 +#define UNICAM_LDP BIT(5)
2419 +#define UNICAM_EDL_MASK GENMASK(15, 8)
2420 +
2421 +/* UNICAM_DBCTL Register */
2422 +#define UNICAM_DBEN BIT(0)
2423 +#define UNICAM_BUF0_IE BIT(1)
2424 +#define UNICAM_BUF1_IE BIT(2)
2425 +
2426 +/* UNICAM_CMP[0,1] register */
2427 +#define UNICAM_PCE BIT(31)
2428 +#define UNICAM_GI BIT(9)
2429 +#define UNICAM_CPH BIT(8)
2430 +#define UNICAM_PCVC_MASK GENMASK(7, 6)
2431 +#define UNICAM_PCDT_MASK GENMASK(5, 0)
2432 +
2433 +/* UNICAM_MISC register */
2434 +#define UNICAM_FL0 BIT(6)
2435 +#define UNICAM_FL1 BIT(9)
2436 +
2437 +#endif
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