projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[media] smiapp-pll: Add pixel rate in pixel array as output parameters
[deliverable/linux.git] / drivers / media / i2c / smiapp / smiapp-core.c
CommitLineData
ccfc97bd 1/*
cb7a01ac 2 * drivers/media/i2c/smiapp/smiapp-core.c
ccfc97bd
SA		 3 *
4 * Generic driver for SMIA/SMIA++ compliant camera modules
5 *
6 * Copyright (C) 2010--2012 Nokia Corporation
8c5dff90 7 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
ccfc97bd
SA		 8 *
9 * Based on smiapp driver by Vimarsh Zutshi
10 * Based on jt8ev1.c by Vimarsh Zutshi
11 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2 as published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 * 02110-1301 USA
26 *
27 */
28
2547428d 29#include <linux/clk.h>
ccfc97bd
SA		 30#include <linux/delay.h>
31#include <linux/device.h>
32#include <linux/gpio.h>
33#include <linux/module.h>
34#include <linux/regulator/consumer.h>
0e2a6b7f
SA		 35#include <linux/slab.h>
36#include <linux/smiapp.h>
ccfc97bd
SA		 37#include <linux/v4l2-mediabus.h>
38#include <media/v4l2-device.h>
39
40#include "smiapp.h"
41
563df3d0
SA		 42#define SMIAPP_ALIGN_DIM(dim, flags) \
43 ((flags) & V4L2_SEL_FLAG_GE \
44 ? ALIGN((dim), 2) \
ccfc97bd
SA		 45 : (dim) & ~1)
46
47/*
48 * smiapp_module_idents - supported camera modules
49 */
50static const struct smiapp_module_ident smiapp_module_idents[] = {
51 SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"),
52 SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"),
53 SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
54 SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
55 SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
56 SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
57 SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
58 SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
59 SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
60 SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
61 SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
62};
63
64/*
65 *
66 * Dynamic Capability Identification
67 *
68 */
69
70static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
71{
72 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
73 u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
74 unsigned int i;
75 int rval;
76 int line_count = 0;
77 int embedded_start = -1, embedded_end = -1;
78 int image_start = 0;
79
1e73eea7 80 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
ccfc97bd
SA		 81 &fmt_model_type);
82 if (rval)
83 return rval;
84
1e73eea7 85 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE,
ccfc97bd
SA		 86 &fmt_model_subtype);
87 if (rval)
88 return rval;
89
90 ncol_desc = (fmt_model_subtype
91 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK)
92 >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT;
93 nrow_desc = fmt_model_subtype
94 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK;
95
96 dev_dbg(&client->dev, "format_model_type %s\n",
97 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE
98 ? "2 byte" :
99 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE
100 ? "4 byte" : "is simply bad");
101
102 for (i = 0; i < ncol_desc + nrow_desc; i++) {
103 u32 desc;
104 u32 pixelcode;
105 u32 pixels;
106 char *which;
107 char *what;
108
109 if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) {
110 rval = smiapp_read(
1e73eea7 111 sensor,
ccfc97bd
SA		 112 SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i),
113 &desc);
114 if (rval)
115 return rval;
116
117 pixelcode =
118 (desc
119 & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK)
120 >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT;
121 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK;
122 } else if (fmt_model_type
123 == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) {
124 rval = smiapp_read(
1e73eea7 125 sensor,
ccfc97bd
SA		 126 SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i),
127 &desc);
128 if (rval)
129 return rval;
130
131 pixelcode =
132 (desc
133 & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK)
134 >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT;
135 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK;
136 } else {
137 dev_dbg(&client->dev,
138 "invalid frame format model type %d\n",
139 fmt_model_type);
140 return -EINVAL;
141 }
142
143 if (i < ncol_desc)
144 which = "columns";
145 else
146 which = "rows";
147
148 switch (pixelcode) {
149 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
150 what = "embedded";
151 break;
152 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY:
153 what = "dummy";
154 break;
155 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK:
156 what = "black";
157 break;
158 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK:
159 what = "dark";
160 break;
161 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
162 what = "visible";
163 break;
164 default:
165 what = "invalid";
166 dev_dbg(&client->dev, "pixelcode %d\n", pixelcode);
167 break;
168 }
169
170 dev_dbg(&client->dev, "%s pixels: %d %s\n",
171 what, pixels, which);
172
173 if (i < ncol_desc)
174 continue;
175
176 /* Handle row descriptors */
177 if (pixelcode
178 == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) {
179 embedded_start = line_count;
180 } else {
181 if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE
182 || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2)
183 image_start = line_count;
184 if (embedded_start != -1 && embedded_end == -1)
185 embedded_end = line_count;
186 }
187 line_count += pixels;
188 }
189
190 if (embedded_start == -1 || embedded_end == -1) {
191 embedded_start = 0;
192 embedded_end = 0;
193 }
194
195 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
196 embedded_start, embedded_end);
197 dev_dbg(&client->dev, "image data starts at line %d\n", image_start);
198
199 return 0;
200}
201
202static int smiapp_pll_configure(struct smiapp_sensor *sensor)
203{
ccfc97bd
SA		 204 struct smiapp_pll *pll = &sensor->pll;
205 int rval;
206
207 rval = smiapp_write(
e3f8bc8c 208 sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt.pix_clk_div);
ccfc97bd
SA		 209 if (rval < 0)
210 return rval;
211
212 rval = smiapp_write(
e3f8bc8c 213 sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt.sys_clk_div);
ccfc97bd
SA		 214 if (rval < 0)
215 return rval;
216
217 rval = smiapp_write(
1e73eea7 218 sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div);
ccfc97bd
SA		 219 if (rval < 0)
220 return rval;
221
222 rval = smiapp_write(
1e73eea7 223 sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier);
ccfc97bd
SA		 224 if (rval < 0)
225 return rval;
226
227 /* Lane op clock ratio does not apply here. */
228 rval = smiapp_write(
1e73eea7 229 sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS,
e3f8bc8c 230 DIV_ROUND_UP(pll->op.sys_clk_freq_hz, 1000000 / 256 / 256));
ccfc97bd
SA		 231 if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
232 return rval;
233
234 rval = smiapp_write(
e3f8bc8c 235 sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op.pix_clk_div);
ccfc97bd
SA		 236 if (rval < 0)
237 return rval;
238
239 return smiapp_write(
e3f8bc8c 240 sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op.sys_clk_div);
ccfc97bd
SA		 241}
242
243static int smiapp_pll_update(struct smiapp_sensor *sensor)
244{
245 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
246 struct smiapp_pll_limits lim = {
247 .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV],
248 .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV],
249 .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ],
250 .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ],
251 .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER],
252 .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER],
253 .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
254 .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],
255
6ec84a28
LP		 256 .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
257 .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
258 .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
259 .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
260 .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
261 .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
262 .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
263 .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
264
265 .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
266 .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
267 .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
268 .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
269 .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
270 .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
271 .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
272 .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
ccfc97bd
SA		 273
274 .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
275 .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
276 };
277 struct smiapp_pll *pll = &sensor->pll;
278 int rval;
279
ccfc97bd
SA		 280 pll->binning_horizontal = sensor->binning_horizontal;
281 pll->binning_vertical = sensor->binning_vertical;
282 pll->link_freq =
283 sensor->link_freq->qmenu_int[sensor->link_freq->val];
284 pll->scale_m = sensor->scale_m;
ccfc97bd
SA		 285 pll->bits_per_pixel = sensor->csi_format->compressed;
286
287 rval = smiapp_pll_calculate(&client->dev, &lim, pll);
288 if (rval < 0)
289 return rval;
290
a328e7e3 291 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray,
e3f8bc8c 292 pll->vt.pix_clk_freq_hz);
a328e7e3 293 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi);
ccfc97bd
SA		 294
295 return 0;
296}
297
298
299/*
300 *
301 * V4L2 Controls handling
302 *
303 */
304
305static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor)
306{
307 struct v4l2_ctrl *ctrl = sensor->exposure;
308 int max;
309
310 max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
311 + sensor->vblank->val
312 - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN];
313
e47a81d8 314 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max);
ccfc97bd
SA		 315}
316
317/*
318 * Order matters.
319 *
320 * 1. Bits-per-pixel, descending.
321 * 2. Bits-per-pixel compressed, descending.
322 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
323 * orders must be defined.
324 */
325static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = {
326 { V4L2_MBUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, },
327 { V4L2_MBUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, },
328 { V4L2_MBUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, },
329 { V4L2_MBUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, },
330 { V4L2_MBUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, },
331 { V4L2_MBUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, },
332 { V4L2_MBUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, },
333 { V4L2_MBUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, },
334 { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, },
335 { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, },
336 { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, },
337 { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, },
b8cc8d7a
SA		 338 { V4L2_MBUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, },
339 { V4L2_MBUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, },
340 { V4L2_MBUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, },
341 { V4L2_MBUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, },
ccfc97bd
SA		 342};
343
344const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
345
346#define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
347 - (unsigned long)smiapp_csi_data_formats) \
348 / sizeof(*smiapp_csi_data_formats))
349
350static u32 smiapp_pixel_order(struct smiapp_sensor *sensor)
351{
352 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
353 int flip = 0;
354
355 if (sensor->hflip) {
356 if (sensor->hflip->val)
357 flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
358
359 if (sensor->vflip->val)
360 flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
361 }
362
363 flip ^= sensor->hvflip_inv_mask;
364
365 dev_dbg(&client->dev, "flip %d\n", flip);
366 return sensor->default_pixel_order ^ flip;
367}
368
369static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor)
370{
371 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
372 unsigned int csi_format_idx =
373 to_csi_format_idx(sensor->csi_format) & ~3;
374 unsigned int internal_csi_format_idx =
375 to_csi_format_idx(sensor->internal_csi_format) & ~3;
376 unsigned int pixel_order = smiapp_pixel_order(sensor);
377
378 sensor->mbus_frame_fmts =
379 sensor->default_mbus_frame_fmts << pixel_order;
380 sensor->csi_format =
381 &smiapp_csi_data_formats[csi_format_idx + pixel_order];
382 sensor->internal_csi_format =
383 &smiapp_csi_data_formats[internal_csi_format_idx
384 + pixel_order];
385
386 BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order
387 >= ARRAY_SIZE(smiapp_csi_data_formats));
ccfc97bd
SA		 388
389 dev_dbg(&client->dev, "new pixel order %s\n",
390 pixel_order_str[pixel_order]);
391}
392
0e2a6b7f
SA		 393static const char * const smiapp_test_patterns[] = {
394 "Disabled",
395 "Solid Colour",
396 "Eight Vertical Colour Bars",
397 "Colour Bars With Fade to Grey",
398 "Pseudorandom Sequence (PN9)",
399};
400
ccfc97bd
SA		 401static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl)
402{
403 struct smiapp_sensor *sensor =
404 container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler)
405 ->sensor;
ccfc97bd
SA		 406 u32 orient = 0;
407 int exposure;
408 int rval;
409
410 switch (ctrl->id) {
411 case V4L2_CID_ANALOGUE_GAIN:
412 return smiapp_write(
1e73eea7 413 sensor,
ccfc97bd
SA		 414 SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val);
415
416 case V4L2_CID_EXPOSURE:
417 return smiapp_write(
1e73eea7 418 sensor,
ccfc97bd
SA		 419 SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val);
420
421 case V4L2_CID_HFLIP:
422 case V4L2_CID_VFLIP:
423 if (sensor->streaming)
424 return -EBUSY;
425
426 if (sensor->hflip->val)
427 orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
428
429 if (sensor->vflip->val)
430 orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
431
432 orient ^= sensor->hvflip_inv_mask;
1e73eea7 433 rval = smiapp_write(sensor,
ccfc97bd
SA		 434 SMIAPP_REG_U8_IMAGE_ORIENTATION,
435 orient);
436 if (rval < 0)
437 return rval;
438
439 smiapp_update_mbus_formats(sensor);
440
441 return 0;
442
443 case V4L2_CID_VBLANK:
444 exposure = sensor->exposure->val;
445
446 __smiapp_update_exposure_limits(sensor);
447
448 if (exposure > sensor->exposure->maximum) {
449 sensor->exposure->val =
450 sensor->exposure->maximum;
451 rval = smiapp_set_ctrl(
452 sensor->exposure);
453 if (rval < 0)
454 return rval;
455 }
456
457 return smiapp_write(
1e73eea7 458 sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES,
ccfc97bd
SA		 459 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
460 + ctrl->val);
461
462 case V4L2_CID_HBLANK:
463 return smiapp_write(
1e73eea7 464 sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK,
ccfc97bd
SA		 465 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
466 + ctrl->val);
467
468 case V4L2_CID_LINK_FREQ:
469 if (sensor->streaming)
470 return -EBUSY;
471
472 return smiapp_pll_update(sensor);
473
0e2a6b7f
SA		 474 case V4L2_CID_TEST_PATTERN: {
475 unsigned int i;
476
477 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
478 v4l2_ctrl_activate(
479 sensor->test_data[i],
480 ctrl->val ==
481 V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR);
482
483 return smiapp_write(
484 sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val);
485 }
486
487 case V4L2_CID_TEST_PATTERN_RED:
488 return smiapp_write(
489 sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val);
490
491 case V4L2_CID_TEST_PATTERN_GREENR:
492 return smiapp_write(
493 sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val);
494
495 case V4L2_CID_TEST_PATTERN_BLUE:
496 return smiapp_write(
497 sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val);
498
499 case V4L2_CID_TEST_PATTERN_GREENB:
500 return smiapp_write(
501 sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val);
502
a328e7e3
SA		 503 case V4L2_CID_PIXEL_RATE:
504 /* For v4l2_ctrl_s_ctrl_int64() used internally. */
505 return 0;
506
ccfc97bd
SA		 507 default:
508 return -EINVAL;
509 }
510}
511
512static const struct v4l2_ctrl_ops smiapp_ctrl_ops = {
513 .s_ctrl = smiapp_set_ctrl,
514};
515
516static int smiapp_init_controls(struct smiapp_sensor *sensor)
517{
518 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
0e2a6b7f 519 unsigned int max, i;
ccfc97bd
SA		 520 int rval;
521
0e2a6b7f 522 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12);
ccfc97bd
SA		 523 if (rval)
524 return rval;
525 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
526
527 sensor->analog_gain = v4l2_ctrl_new_std(
528 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
529 V4L2_CID_ANALOGUE_GAIN,
530 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN],
531 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX],
532 max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U),
533 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]);
534
535 /* Exposure limits will be updated soon, use just something here. */
536 sensor->exposure = v4l2_ctrl_new_std(
537 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
538 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
539
540 sensor->hflip = v4l2_ctrl_new_std(
541 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
542 V4L2_CID_HFLIP, 0, 1, 1, 0);
543 sensor->vflip = v4l2_ctrl_new_std(
544 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
545 V4L2_CID_VFLIP, 0, 1, 1, 0);
546
547 sensor->vblank = v4l2_ctrl_new_std(
548 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
549 V4L2_CID_VBLANK, 0, 1, 1, 0);
550
551 if (sensor->vblank)
552 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
553
554 sensor->hblank = v4l2_ctrl_new_std(
555 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
556 V4L2_CID_HBLANK, 0, 1, 1, 0);
557
558 if (sensor->hblank)
559 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
560
561 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
562 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 563 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd 564
0e2a6b7f
SA		 565 v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler,
566 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN,
567 ARRAY_SIZE(smiapp_test_patterns) - 1,
568 0, 0, smiapp_test_patterns);
569
570 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) {
571 int max_value = (1 << sensor->csi_format->width) - 1;
572 sensor->test_data[i] =
573 v4l2_ctrl_new_std(
574 &sensor->pixel_array->ctrl_handler,
575 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i,
576 0, max_value, 1, max_value);
577 }
578
ccfc97bd
SA		 579 if (sensor->pixel_array->ctrl_handler.error) {
580 dev_err(&client->dev,
581 "pixel array controls initialization failed (%d)\n",
582 sensor->pixel_array->ctrl_handler.error);
583 rval = sensor->pixel_array->ctrl_handler.error;
584 goto error;
585 }
586
587 sensor->pixel_array->sd.ctrl_handler =
588 &sensor->pixel_array->ctrl_handler;
589
590 v4l2_ctrl_cluster(2, &sensor->hflip);
591
592 rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0);
593 if (rval)
594 goto error;
595 sensor->src->ctrl_handler.lock = &sensor->mutex;
596
06b491fb 597 for (max = 0; sensor->platform_data->op_sys_clock[max + 1]; max++);
ccfc97bd 598
06b491fb
SA		 599 sensor->link_freq = v4l2_ctrl_new_int_menu(
600 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
601 V4L2_CID_LINK_FREQ, max, 0,
602 sensor->platform_data->op_sys_clock);
ccfc97bd
SA		 603
604 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
605 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 606 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd
SA		 607
608 if (sensor->src->ctrl_handler.error) {
609 dev_err(&client->dev,
610 "src controls initialization failed (%d)\n",
611 sensor->src->ctrl_handler.error);
612 rval = sensor->src->ctrl_handler.error;
613 goto error;
614 }
615
616 sensor->src->sd.ctrl_handler =
617 &sensor->src->ctrl_handler;
618
619 return 0;
620
621error:
622 v4l2_ctrl_handler_free(&sensor->pixel_array->ctrl_handler);
623 v4l2_ctrl_handler_free(&sensor->src->ctrl_handler);
624
625 return rval;
626}
627
628static void smiapp_free_controls(struct smiapp_sensor *sensor)
629{
630 unsigned int i;
631
632 for (i = 0; i < sensor->ssds_used; i++)
633 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
634}
635
636static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit,
637 unsigned int n)
638{
639 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
640 unsigned int i;
641 u32 val;
642 int rval;
643
644 for (i = 0; i < n; i++) {
645 rval = smiapp_read(
1e73eea7 646 sensor, smiapp_reg_limits[limit[i]].addr, &val);
ccfc97bd
SA		 647 if (rval)
648 return rval;
649 sensor->limits[limit[i]] = val;
393cbd8d 650 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
ccfc97bd
SA		 651 smiapp_reg_limits[limit[i]].addr,
652 smiapp_reg_limits[limit[i]].what, val, val);
653 }
654
655 return 0;
656}
657
658static int smiapp_get_all_limits(struct smiapp_sensor *sensor)
659{
660 unsigned int i;
661 int rval;
662
663 for (i = 0; i < SMIAPP_LIMIT_LAST; i++) {
664 rval = smiapp_get_limits(sensor, &i, 1);
665 if (rval < 0)
666 return rval;
667 }
668
669 if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0)
670 smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16);
671
672 return 0;
673}
674
675static int smiapp_get_limits_binning(struct smiapp_sensor *sensor)
676{
3de886e0 677 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
ccfc97bd
SA		 678 static u32 const limits[] = {
679 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN,
680 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN,
681 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN,
682 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN,
683 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN,
684 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN,
685 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN,
686 };
687 static u32 const limits_replace[] = {
688 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES,
689 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES,
690 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK,
691 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK,
692 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK,
693 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN,
694 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN,
695 };
3de886e0
SA		 696 unsigned int i;
697 int rval;
ccfc97bd
SA		 698
699 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] ==
700 SMIAPP_BINNING_CAPABILITY_NO) {
ccfc97bd
SA		 701 for (i = 0; i < ARRAY_SIZE(limits); i++)
702 sensor->limits[limits[i]] =
703 sensor->limits[limits_replace[i]];
704
705 return 0;
706 }
707
3de886e0
SA		 708 rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits));
709 if (rval < 0)
710 return rval;
711
712 /*
713 * Sanity check whether the binning limits are valid. If not,
714 * use the non-binning ones.
715 */
716 if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN]
717 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN]
718 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN])
719 return 0;
720
721 for (i = 0; i < ARRAY_SIZE(limits); i++) {
722 dev_dbg(&client->dev,
723 "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n",
724 smiapp_reg_limits[limits[i]].addr,
725 smiapp_reg_limits[limits[i]].what,
726 sensor->limits[limits_replace[i]],
727 sensor->limits[limits_replace[i]]);
728 sensor->limits[limits[i]] =
729 sensor->limits[limits_replace[i]];
730 }
731
732 return 0;
ccfc97bd
SA		 733}
734
735static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor)
736{
737 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
738 unsigned int type, n;
739 unsigned int i, pixel_order;
740 int rval;
741
742 rval = smiapp_read(
1e73eea7 743 sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type);
ccfc97bd
SA		 744 if (rval)
745 return rval;
746
747 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
748
1e73eea7 749 rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER,
ccfc97bd
SA		 750 &pixel_order);
751 if (rval)
752 return rval;
753
754 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
755 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
756 return -EINVAL;
757 }
758
759 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
760 pixel_order_str[pixel_order]);
761
762 switch (type) {
763 case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL:
764 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
765 break;
766 case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED:
767 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N;
768 break;
769 default:
770 return -EINVAL;
771 }
772
773 sensor->default_pixel_order = pixel_order;
774 sensor->mbus_frame_fmts = 0;
775
776 for (i = 0; i < n; i++) {
777 unsigned int fmt, j;
778
779 rval = smiapp_read(
1e73eea7 780 sensor,
ccfc97bd
SA		 781 SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt);
782 if (rval)
783 return rval;
784
48cb4a5d
SA		 785 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
786 i, fmt >> 8, (u8)fmt);
ccfc97bd
SA		 787
788 for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) {
789 const struct smiapp_csi_data_format *f =
790 &smiapp_csi_data_formats[j];
791
792 if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG)
793 continue;
794
795 if (f->width != fmt >> 8 || f->compressed != (u8)fmt)
796 continue;
797
798 dev_dbg(&client->dev, "jolly good! %d\n", j);
799
800 sensor->default_mbus_frame_fmts |= 1 << j;
f67e1573
SA		 801 if (!sensor->csi_format
802 || f->width > sensor->csi_format->width
803 || (f->width == sensor->csi_format->width
804 && f->compressed
805 > sensor->csi_format->compressed)) {
ccfc97bd
SA		 806 sensor->csi_format = f;
807 sensor->internal_csi_format = f;
808 }
809 }
810 }
811
812 if (!sensor->csi_format) {
813 dev_err(&client->dev, "no supported mbus code found\n");
814 return -EINVAL;
815 }
816
817 smiapp_update_mbus_formats(sensor);
818
819 return 0;
820}
821
822static void smiapp_update_blanking(struct smiapp_sensor *sensor)
823{
824 struct v4l2_ctrl *vblank = sensor->vblank;
825 struct v4l2_ctrl *hblank = sensor->hblank;
e47a81d8 826 int min, max;
ccfc97bd 827
e47a81d8
SA		 828 min = max_t(int,
829 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES],
830 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] -
831 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height);
832 max = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] -
ccfc97bd
SA		 833 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
834
e47a81d8
SA		 835 __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min);
836
837 min = max_t(int,
838 sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] -
839 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width,
840 sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]);
841 max = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] -
ccfc97bd
SA		 842 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
843
e47a81d8 844 __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min);
ccfc97bd
SA		 845
846 __smiapp_update_exposure_limits(sensor);
847}
848
849static int smiapp_update_mode(struct smiapp_sensor *sensor)
850{
851 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
852 unsigned int binning_mode;
853 int rval;
854
855 dev_dbg(&client->dev, "frame size: %dx%d\n",
856 sensor->src->crop[SMIAPP_PAD_SRC].width,
857 sensor->src->crop[SMIAPP_PAD_SRC].height);
858 dev_dbg(&client->dev, "csi format width: %d\n",
859 sensor->csi_format->width);
860
861 /* Binning has to be set up here; it affects limits */
862 if (sensor->binning_horizontal == 1 &&
863 sensor->binning_vertical == 1) {
864 binning_mode = 0;
865 } else {
866 u8 binning_type =
867 (sensor->binning_horizontal << 4)
868 | sensor->binning_vertical;
869
870 rval = smiapp_write(
1e73eea7 871 sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type);
ccfc97bd
SA		 872 if (rval < 0)
873 return rval;
874
875 binning_mode = 1;
876 }
1e73eea7 877 rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode);
ccfc97bd
SA		 878 if (rval < 0)
879 return rval;
880
881 /* Get updated limits due to binning */
882 rval = smiapp_get_limits_binning(sensor);
883 if (rval < 0)
884 return rval;
885
886 rval = smiapp_pll_update(sensor);
887 if (rval < 0)
888 return rval;
889
890 /* Output from pixel array, including blanking */
891 smiapp_update_blanking(sensor);
892
893 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
894 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
895
896 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
e3f8bc8c 897 sensor->pll.vt.pix_clk_freq_hz /
ccfc97bd
SA		 898 ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
899 + sensor->hblank->val) *
900 (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
901 + sensor->vblank->val) / 100));
902
903 return 0;
904}
905
906/*
907 *
908 * SMIA++ NVM handling
909 *
910 */
911static int smiapp_read_nvm(struct smiapp_sensor *sensor,
912 unsigned char *nvm)
913{
ccfc97bd 914 u32 i, s, p, np, v;
04582947 915 int rval = 0, rval2;
ccfc97bd
SA		 916
917 np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE;
918 for (p = 0; p < np; p++) {
919 rval = smiapp_write(
1e73eea7 920 sensor,
ccfc97bd
SA		 921 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p);
922 if (rval)
923 goto out;
924
1e73eea7 925 rval = smiapp_write(sensor,
ccfc97bd
SA		 926 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL,
927 SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN |
928 SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN);
929 if (rval)
930 goto out;
931
932 for (i = 0; i < 1000; i++) {
933 rval = smiapp_read(
1e73eea7 934 sensor,
ccfc97bd
SA		 935 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s);
936
937 if (rval)
938 goto out;
939
940 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
941 break;
942
943 if (--i == 0) {
944 rval = -ETIMEDOUT;
945 goto out;
946 }
947
948 }
949
950 for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
951 rval = smiapp_read(
1e73eea7 952 sensor,
ccfc97bd
SA		 953 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i,
954 &v);
955 if (rval)
956 goto out;
957
958 *nvm++ = v;
959 }
960 }
961
962out:
1e73eea7 963 rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0);
ccfc97bd
SA		 964 if (rval < 0)
965 return rval;
966 else
967 return rval2;
968}
969
970/*
971 *
972 * SMIA++ CCI address control
973 *
974 */
975static int smiapp_change_cci_addr(struct smiapp_sensor *sensor)
976{
977 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
978 int rval;
979 u32 val;
980
981 client->addr = sensor->platform_data->i2c_addr_dfl;
982
1e73eea7 983 rval = smiapp_write(sensor,
ccfc97bd
SA		 984 SMIAPP_REG_U8_CCI_ADDRESS_CONTROL,
985 sensor->platform_data->i2c_addr_alt << 1);
986 if (rval)
987 return rval;
988
989 client->addr = sensor->platform_data->i2c_addr_alt;
990
991 /* verify addr change went ok */
1e73eea7 992 rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val);
ccfc97bd
SA		 993 if (rval)
994 return rval;
995
996 if (val != sensor->platform_data->i2c_addr_alt << 1)
997 return -ENODEV;
998
999 return 0;
1000}
1001
1002/*
1003 *
1004 * SMIA++ Mode Control
1005 *
1006 */
1007static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor)
1008{
ccfc97bd
SA		 1009 struct smiapp_flash_strobe_parms *strobe_setup;
1010 unsigned int ext_freq = sensor->platform_data->ext_clk;
1011 u32 tmp;
1012 u32 strobe_adjustment;
1013 u32 strobe_width_high_rs;
1014 int rval;
1015
1016 strobe_setup = sensor->platform_data->strobe_setup;
1017
1018 /*
1019 * How to calculate registers related to strobe length. Please
1020 * do not change, or if you do at least know what you're
1021 * doing. :-)
1022 *
8c5dff90 1023 * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25
ccfc97bd
SA		 1024 *
1025 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
1026 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
1027 *
1028 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
1029 * flash_strobe_adjustment E N, [1 - 0xff]
1030 *
1031 * The formula above is written as below to keep it on one
1032 * line:
1033 *
1034 * l / 10^6 = w / e * a
1035 *
1036 * Let's mark w * a by x:
1037 *
1038 * x = w * a
1039 *
1040 * Thus, we get:
1041 *
1042 * x = l * e / 10^6
1043 *
1044 * The strobe width must be at least as long as requested,
1045 * thus rounding upwards is needed.
1046 *
1047 * x = (l * e + 10^6 - 1) / 10^6
1048 * -----------------------------
1049 *
1050 * Maximum possible accuracy is wanted at all times. Thus keep
1051 * a as small as possible.
1052 *
1053 * Calculate a, assuming maximum w, with rounding upwards:
1054 *
1055 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1056 * -------------------------------------
1057 *
1058 * Thus, we also get w, with that a, with rounding upwards:
1059 *
1060 * w = (x + a - 1) / a
1061 * -------------------
1062 *
1063 * To get limits:
1064 *
1065 * x E [1, (2^16 - 1) * (2^8 - 1)]
1066 *
1067 * Substituting maximum x to the original formula (with rounding),
1068 * the maximum l is thus
1069 *
1070 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1071 *
1072 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1073 * --------------------------------------------------
1074 *
1075 * flash_strobe_length must be clamped between 1 and
1076 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1077 *
1078 * Then,
1079 *
1080 * flash_strobe_adjustment = ((flash_strobe_length *
1081 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1082 *
1083 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1084 * EXTCLK freq + 10^6 - 1) / 10^6 +
1085 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1086 */
1087 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1088 1000000 + 1, ext_freq);
1089 strobe_setup->strobe_width_high_us =
1090 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1091
1092 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1093 1000000 - 1), 1000000ULL);
1094 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1095 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1096 strobe_adjustment;
1097
1e73eea7 1098 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS,
ccfc97bd
SA		 1099 strobe_setup->mode);
1100 if (rval < 0)
1101 goto out;
1102
1e73eea7 1103 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT,
ccfc97bd
SA		 1104 strobe_adjustment);
1105 if (rval < 0)
1106 goto out;
1107
1108 rval = smiapp_write(
1e73eea7 1109 sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
ccfc97bd
SA		 1110 strobe_width_high_rs);
1111 if (rval < 0)
1112 goto out;
1113
1e73eea7 1114 rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL,
ccfc97bd
SA		 1115 strobe_setup->strobe_delay);
1116 if (rval < 0)
1117 goto out;
1118
1e73eea7 1119 rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT,
ccfc97bd
SA		 1120 strobe_setup->stobe_start_point);
1121 if (rval < 0)
1122 goto out;
1123
1e73eea7 1124 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS,
ccfc97bd
SA		 1125 strobe_setup->trigger);
1126
1127out:
1128 sensor->platform_data->strobe_setup->trigger = 0;
1129
1130 return rval;
1131}
1132
1133/* -----------------------------------------------------------------------------
1134 * Power management
1135 */
1136
1137static int smiapp_power_on(struct smiapp_sensor *sensor)
1138{
1139 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1140 unsigned int sleep;
1141 int rval;
1142
1143 rval = regulator_enable(sensor->vana);
1144 if (rval) {
1145 dev_err(&client->dev, "failed to enable vana regulator\n");
1146 return rval;
1147 }
1148 usleep_range(1000, 1000);
1149
2547428d
SA		 1150 if (sensor->platform_data->set_xclk)
1151 rval = sensor->platform_data->set_xclk(
1152 &sensor->src->sd, sensor->platform_data->ext_clk);
1153 else
d0aae004 1154 rval = clk_prepare_enable(sensor->ext_clk);
ccfc97bd 1155 if (rval < 0) {
d0aae004 1156 dev_dbg(&client->dev, "failed to enable xclk\n");
ccfc97bd
SA		 1157 goto out_xclk_fail;
1158 }
1159 usleep_range(1000, 1000);
1160
9945374e 1161 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd
SA		 1162 gpio_set_value(sensor->platform_data->xshutdown, 1);
1163
1164 sleep = SMIAPP_RESET_DELAY(sensor->platform_data->ext_clk);
1165 usleep_range(sleep, sleep);
1166
1167 /*
1168 * Failures to respond to the address change command have been noticed.
1169 * Those failures seem to be caused by the sensor requiring a longer
1170 * boot time than advertised. An additional 10ms delay seems to work
1171 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1172 * unnecessary. The failures need to be investigated to find a proper
1173 * fix, and a delay will likely need to be added here if the I2C write
1174 * retry hack is reverted before the root cause of the boot time issue
1175 * is found.
1176 */
1177
1178 if (sensor->platform_data->i2c_addr_alt) {
1179 rval = smiapp_change_cci_addr(sensor);
1180 if (rval) {
1181 dev_err(&client->dev, "cci address change error\n");
1182 goto out_cci_addr_fail;
1183 }
1184 }
1185
1e73eea7 1186 rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
ccfc97bd
SA		 1187 SMIAPP_SOFTWARE_RESET);
1188 if (rval < 0) {
1189 dev_err(&client->dev, "software reset failed\n");
1190 goto out_cci_addr_fail;
1191 }
1192
1193 if (sensor->platform_data->i2c_addr_alt) {
1194 rval = smiapp_change_cci_addr(sensor);
1195 if (rval) {
1196 dev_err(&client->dev, "cci address change error\n");
1197 goto out_cci_addr_fail;
1198 }
1199 }
1200
1e73eea7 1201 rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
ccfc97bd
SA		 1202 SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
1203 if (rval) {
1204 dev_err(&client->dev, "compression mode set failed\n");
1205 goto out_cci_addr_fail;
1206 }
1207
1208 rval = smiapp_write(
1e73eea7 1209 sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
ccfc97bd
SA		 1210 sensor->platform_data->ext_clk / (1000000 / (1 << 8)));
1211 if (rval) {
1212 dev_err(&client->dev, "extclk frequency set failed\n");
1213 goto out_cci_addr_fail;
1214 }
1215
1e73eea7 1216 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
ccfc97bd
SA		 1217 sensor->platform_data->lanes - 1);
1218 if (rval) {
1219 dev_err(&client->dev, "csi lane mode set failed\n");
1220 goto out_cci_addr_fail;
1221 }
1222
1e73eea7 1223 rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
ccfc97bd
SA		 1224 SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
1225 if (rval) {
1226 dev_err(&client->dev, "fast standby set failed\n");
1227 goto out_cci_addr_fail;
1228 }
1229
1e73eea7 1230 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
ccfc97bd
SA		 1231 sensor->platform_data->csi_signalling_mode);
1232 if (rval) {
1233 dev_err(&client->dev, "csi signalling mode set failed\n");
1234 goto out_cci_addr_fail;
1235 }
1236
1237 /* DPHY control done by sensor based on requested link rate */
1e73eea7 1238 rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
ccfc97bd
SA		 1239 SMIAPP_DPHY_CTRL_UI);
1240 if (rval < 0)
1241 return rval;
1242
1243 rval = smiapp_call_quirk(sensor, post_poweron);
1244 if (rval) {
1245 dev_err(&client->dev, "post_poweron quirks failed\n");
1246 goto out_cci_addr_fail;
1247 }
1248
1249 /* Are we still initialising...? If yes, return here. */
1250 if (!sensor->pixel_array)
1251 return 0;
1252
1253 rval = v4l2_ctrl_handler_setup(
1254 &sensor->pixel_array->ctrl_handler);
1255 if (rval)
1256 goto out_cci_addr_fail;
1257
1258 rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1259 if (rval)
1260 goto out_cci_addr_fail;
1261
1262 mutex_lock(&sensor->mutex);
1263 rval = smiapp_update_mode(sensor);
1264 mutex_unlock(&sensor->mutex);
1265 if (rval < 0)
1266 goto out_cci_addr_fail;
1267
1268 return 0;
1269
1270out_cci_addr_fail:
9945374e 1271 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1272 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1273 if (sensor->platform_data->set_xclk)
1274 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1275 else
d0aae004 1276 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1277
1278out_xclk_fail:
1279 regulator_disable(sensor->vana);
1280 return rval;
1281}
1282
1283static void smiapp_power_off(struct smiapp_sensor *sensor)
1284{
ccfc97bd
SA		 1285 /*
1286 * Currently power/clock to lens are enable/disabled separately
1287 * but they are essentially the same signals. So if the sensor is
1288 * powered off while the lens is powered on the sensor does not
1289 * really see a power off and next time the cci address change
1290 * will fail. So do a soft reset explicitly here.
1291 */
1292 if (sensor->platform_data->i2c_addr_alt)
1e73eea7 1293 smiapp_write(sensor,
ccfc97bd
SA		 1294 SMIAPP_REG_U8_SOFTWARE_RESET,
1295 SMIAPP_SOFTWARE_RESET);
1296
9945374e 1297 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1298 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1299 if (sensor->platform_data->set_xclk)
1300 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1301 else
d0aae004 1302 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1303 usleep_range(5000, 5000);
1304 regulator_disable(sensor->vana);
06e916b7 1305 sensor->streaming = false;
ccfc97bd
SA		 1306}
1307
1308static int smiapp_set_power(struct v4l2_subdev *subdev, int on)
1309{
1310 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1311 int ret = 0;
1312
1313 mutex_lock(&sensor->power_mutex);
1314
58e43d90 1315 if (on && !sensor->power_count) {
ccfc97bd
SA		 1316 /* Power on and perform initialisation. */
1317 ret = smiapp_power_on(sensor);
1318 if (ret < 0)
1319 goto out;
58e43d90 1320 } else if (!on && sensor->power_count == 1) {
ccfc97bd
SA		 1321 smiapp_power_off(sensor);
1322 }
1323
1324 /* Update the power count. */
1325 sensor->power_count += on ? 1 : -1;
1326 WARN_ON(sensor->power_count < 0);
1327
1328out:
1329 mutex_unlock(&sensor->power_mutex);
1330 return ret;
1331}
1332
1333/* -----------------------------------------------------------------------------
1334 * Video stream management
1335 */
1336
1337static int smiapp_start_streaming(struct smiapp_sensor *sensor)
1338{
1339 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1340 int rval;
1341
1342 mutex_lock(&sensor->mutex);
1343
1e73eea7 1344 rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT,
ccfc97bd
SA		 1345 (sensor->csi_format->width << 8) |
1346 sensor->csi_format->compressed);
1347 if (rval)
1348 goto out;
1349
1350 rval = smiapp_pll_configure(sensor);
1351 if (rval)
1352 goto out;
1353
1354 /* Analog crop start coordinates */
1e73eea7 1355 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START,
ccfc97bd
SA		 1356 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left);
1357 if (rval < 0)
1358 goto out;
1359
1e73eea7 1360 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START,
ccfc97bd
SA		 1361 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top);
1362 if (rval < 0)
1363 goto out;
1364
1365 /* Analog crop end coordinates */
1366 rval = smiapp_write(
1e73eea7 1367 sensor, SMIAPP_REG_U16_X_ADDR_END,
ccfc97bd
SA		 1368 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left
1369 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1);
1370 if (rval < 0)
1371 goto out;
1372
1373 rval = smiapp_write(
1e73eea7 1374 sensor, SMIAPP_REG_U16_Y_ADDR_END,
ccfc97bd
SA		 1375 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top
1376 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1);
1377 if (rval < 0)
1378 goto out;
1379
1380 /*
1381 * Output from pixel array, including blanking, is set using
1382 * controls below. No need to set here.
1383 */
1384
1385 /* Digital crop */
1386 if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1387 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1388 rval = smiapp_write(
1e73eea7 1389 sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET,
ccfc97bd
SA		 1390 sensor->scaler->crop[SMIAPP_PAD_SINK].left);
1391 if (rval < 0)
1392 goto out;
1393
1394 rval = smiapp_write(
1e73eea7 1395 sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET,
ccfc97bd
SA		 1396 sensor->scaler->crop[SMIAPP_PAD_SINK].top);
1397 if (rval < 0)
1398 goto out;
1399
1400 rval = smiapp_write(
1e73eea7 1401 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH,
ccfc97bd
SA		 1402 sensor->scaler->crop[SMIAPP_PAD_SINK].width);
1403 if (rval < 0)
1404 goto out;
1405
1406 rval = smiapp_write(
1e73eea7 1407 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT,
ccfc97bd
SA		 1408 sensor->scaler->crop[SMIAPP_PAD_SINK].height);
1409 if (rval < 0)
1410 goto out;
1411 }
1412
1413 /* Scaling */
1414 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1415 != SMIAPP_SCALING_CAPABILITY_NONE) {
1e73eea7 1416 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE,
ccfc97bd
SA		 1417 sensor->scaling_mode);
1418 if (rval < 0)
1419 goto out;
1420
1e73eea7 1421 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M,
ccfc97bd
SA		 1422 sensor->scale_m);
1423 if (rval < 0)
1424 goto out;
1425 }
1426
1427 /* Output size from sensor */
1e73eea7 1428 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE,
ccfc97bd
SA		 1429 sensor->src->crop[SMIAPP_PAD_SRC].width);
1430 if (rval < 0)
1431 goto out;
1e73eea7 1432 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE,
ccfc97bd
SA		 1433 sensor->src->crop[SMIAPP_PAD_SRC].height);
1434 if (rval < 0)
1435 goto out;
1436
1437 if ((sensor->flash_capability &
1438 (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1439 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) &&
1440 sensor->platform_data->strobe_setup != NULL &&
1441 sensor->platform_data->strobe_setup->trigger != 0) {
1442 rval = smiapp_setup_flash_strobe(sensor);
1443 if (rval)
1444 goto out;
1445 }
1446
1447 rval = smiapp_call_quirk(sensor, pre_streamon);
1448 if (rval) {
1449 dev_err(&client->dev, "pre_streamon quirks failed\n");
1450 goto out;
1451 }
1452
1e73eea7 1453 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1454 SMIAPP_MODE_SELECT_STREAMING);
1455
1456out:
1457 mutex_unlock(&sensor->mutex);
1458
1459 return rval;
1460}
1461
1462static int smiapp_stop_streaming(struct smiapp_sensor *sensor)
1463{
1464 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1465 int rval;
1466
1467 mutex_lock(&sensor->mutex);
1e73eea7 1468 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1469 SMIAPP_MODE_SELECT_SOFTWARE_STANDBY);
1470 if (rval)
1471 goto out;
1472
1473 rval = smiapp_call_quirk(sensor, post_streamoff);
1474 if (rval)
1475 dev_err(&client->dev, "post_streamoff quirks failed\n");
1476
1477out:
1478 mutex_unlock(&sensor->mutex);
1479 return rval;
1480}
1481
1482/* -----------------------------------------------------------------------------
1483 * V4L2 subdev video operations
1484 */
1485
1486static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
1487{
1488 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1489 int rval;
1490
1491 if (sensor->streaming == enable)
1492 return 0;
1493
1494 if (enable) {
06e916b7 1495 sensor->streaming = true;
ccfc97bd
SA		 1496 rval = smiapp_start_streaming(sensor);
1497 if (rval < 0)
06e916b7 1498 sensor->streaming = false;
ccfc97bd
SA		 1499 } else {
1500 rval = smiapp_stop_streaming(sensor);
06e916b7 1501 sensor->streaming = false;
ccfc97bd
SA		 1502 }
1503
1504 return rval;
1505}
1506
1507static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev,
1508 struct v4l2_subdev_fh *fh,
1509 struct v4l2_subdev_mbus_code_enum *code)
1510{
1511 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1512 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1513 unsigned int i;
1514 int idx = -1;
1515 int rval = -EINVAL;
1516
1517 mutex_lock(&sensor->mutex);
1518
1519 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1520 subdev->name, code->pad, code->index);
1521
1522 if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) {
1523 if (code->index)
1524 goto out;
1525
1526 code->code = sensor->internal_csi_format->code;
1527 rval = 0;
1528 goto out;
1529 }
1530
1531 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1532 if (sensor->mbus_frame_fmts & (1 << i))
1533 idx++;
1534
1535 if (idx == code->index) {
1536 code->code = smiapp_csi_data_formats[i].code;
1537 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1538 code->index, i, code->code);
1539 rval = 0;
1540 break;
1541 }
1542 }
1543
1544out:
1545 mutex_unlock(&sensor->mutex);
1546
1547 return rval;
1548}
1549
1550static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev,
1551 unsigned int pad)
1552{
1553 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1554
1555 if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC)
1556 return sensor->csi_format->code;
1557 else
1558 return sensor->internal_csi_format->code;
1559}
1560
1561static int __smiapp_get_format(struct v4l2_subdev *subdev,
1562 struct v4l2_subdev_fh *fh,
1563 struct v4l2_subdev_format *fmt)
1564{
1565 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1566
1567 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1568 fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad);
1569 } else {
1570 struct v4l2_rect *r;
1571
1572 if (fmt->pad == ssd->source_pad)
1573 r = &ssd->crop[ssd->source_pad];
1574 else
1575 r = &ssd->sink_fmt;
1576
1577 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1578 fmt->format.width = r->width;
1579 fmt->format.height = r->height;
7ed0b291 1580 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1581 }
1582
1583 return 0;
1584}
1585
1586static int smiapp_get_format(struct v4l2_subdev *subdev,
1587 struct v4l2_subdev_fh *fh,
1588 struct v4l2_subdev_format *fmt)
1589{
1590 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1591 int rval;
1592
1593 mutex_lock(&sensor->mutex);
1594 rval = __smiapp_get_format(subdev, fh, fmt);
1595 mutex_unlock(&sensor->mutex);
1596
1597 return rval;
1598}
1599
1600static void smiapp_get_crop_compose(struct v4l2_subdev *subdev,
1601 struct v4l2_subdev_fh *fh,
1602 struct v4l2_rect **crops,
1603 struct v4l2_rect **comps, int which)
1604{
1605 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1606 unsigned int i;
1607
1608 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1609 if (crops)
1610 for (i = 0; i < subdev->entity.num_pads; i++)
1611 crops[i] = &ssd->crop[i];
1612 if (comps)
1613 *comps = &ssd->compose;
1614 } else {
1615 if (crops) {
1616 for (i = 0; i < subdev->entity.num_pads; i++) {
1617 crops[i] = v4l2_subdev_get_try_crop(fh, i);
1618 BUG_ON(!crops[i]);
1619 }
1620 }
1621 if (comps) {
1622 *comps = v4l2_subdev_get_try_compose(fh,
1623 SMIAPP_PAD_SINK);
1624 BUG_ON(!*comps);
1625 }
1626 }
1627}
1628
1629/* Changes require propagation only on sink pad. */
1630static void smiapp_propagate(struct v4l2_subdev *subdev,
1631 struct v4l2_subdev_fh *fh, int which,
1632 int target)
1633{
1634 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1635 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1636 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1637
1638 smiapp_get_crop_compose(subdev, fh, crops, &comp, which);
1639
1640 switch (target) {
5689b288 1641 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 1642 comp->width = crops[SMIAPP_PAD_SINK]->width;
1643 comp->height = crops[SMIAPP_PAD_SINK]->height;
1644 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1645 if (ssd == sensor->scaler) {
1646 sensor->scale_m =
1647 sensor->limits[
1648 SMIAPP_LIMIT_SCALER_N_MIN];
1649 sensor->scaling_mode =
1650 SMIAPP_SCALING_MODE_NONE;
1651 } else if (ssd == sensor->binner) {
1652 sensor->binning_horizontal = 1;
1653 sensor->binning_vertical = 1;
1654 }
1655 }
1656 /* Fall through */
5689b288 1657 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 1658 *crops[SMIAPP_PAD_SRC] = *comp;
1659 break;
1660 default:
1661 BUG();
1662 }
1663}
1664
1665static const struct smiapp_csi_data_format
1666*smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code)
1667{
1668 const struct smiapp_csi_data_format *csi_format = sensor->csi_format;
1669 unsigned int i;
1670
1671 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1672 if (sensor->mbus_frame_fmts & (1 << i)
1673 && smiapp_csi_data_formats[i].code == code)
1674 return &smiapp_csi_data_formats[i];
1675 }
1676
1677 return csi_format;
1678}
1679
1680static int smiapp_set_format(struct v4l2_subdev *subdev,
1681 struct v4l2_subdev_fh *fh,
1682 struct v4l2_subdev_format *fmt)
1683{
1684 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1685 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1686 struct v4l2_rect *crops[SMIAPP_PADS];
1687
1688 mutex_lock(&sensor->mutex);
1689
1690 /*
1691 * Media bus code is changeable on src subdev's source pad. On
1692 * other source pads we just get format here.
1693 */
1694 if (fmt->pad == ssd->source_pad) {
1695 u32 code = fmt->format.code;
1696 int rval = __smiapp_get_format(subdev, fh, fmt);
0e2a6b7f
SA		 1697 bool range_changed = false;
1698 unsigned int i;
ccfc97bd
SA		 1699
1700 if (!rval && subdev == &sensor->src->sd) {
1701 const struct smiapp_csi_data_format *csi_format =
1702 smiapp_validate_csi_data_format(sensor, code);
0e2a6b7f
SA		 1703
1704 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1705 if (csi_format->width !=
1706 sensor->csi_format->width)
1707 range_changed = true;
1708
ccfc97bd 1709 sensor->csi_format = csi_format;
0e2a6b7f
SA		 1710 }
1711
ccfc97bd
SA		 1712 fmt->format.code = csi_format->code;
1713 }
1714
1715 mutex_unlock(&sensor->mutex);
0e2a6b7f
SA		 1716 if (rval || !range_changed)
1717 return rval;
1718
1719 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
1720 v4l2_ctrl_modify_range(
1721 sensor->test_data[i],
1722 0, (1 << sensor->csi_format->width) - 1, 1, 0);
1723
1724 return 0;
ccfc97bd
SA		 1725 }
1726
1727 /* Sink pad. Width and height are changeable here. */
1728 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1729 fmt->format.width &= ~1;
1730 fmt->format.height &= ~1;
7ed0b291 1731 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1732
1733 fmt->format.width =
1734 clamp(fmt->format.width,
1735 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
1736 sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]);
1737 fmt->format.height =
1738 clamp(fmt->format.height,
1739 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
1740 sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]);
1741
1742 smiapp_get_crop_compose(subdev, fh, crops, NULL, fmt->which);
1743
1744 crops[ssd->sink_pad]->left = 0;
1745 crops[ssd->sink_pad]->top = 0;
1746 crops[ssd->sink_pad]->width = fmt->format.width;
1747 crops[ssd->sink_pad]->height = fmt->format.height;
1748 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1749 ssd->sink_fmt = *crops[ssd->sink_pad];
1750 smiapp_propagate(subdev, fh, fmt->which,
5689b288 1751 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 1752
1753 mutex_unlock(&sensor->mutex);
1754
1755 return 0;
1756}
1757
1758/*
1759 * Calculate goodness of scaled image size compared to expected image
1760 * size and flags provided.
1761 */
1762#define SCALING_GOODNESS 100000
1763#define SCALING_GOODNESS_EXTREME 100000000
1764static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
1765 int h, int ask_h, u32 flags)
1766{
1767 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1768 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1769 int val = 0;
1770
1771 w &= ~1;
1772 ask_w &= ~1;
1773 h &= ~1;
1774 ask_h &= ~1;
1775
563df3d0 1776 if (flags & V4L2_SEL_FLAG_GE) {
ccfc97bd
SA		 1777 if (w < ask_w)
1778 val -= SCALING_GOODNESS;
1779 if (h < ask_h)
1780 val -= SCALING_GOODNESS;
1781 }
1782
563df3d0 1783 if (flags & V4L2_SEL_FLAG_LE) {
ccfc97bd
SA		 1784 if (w > ask_w)
1785 val -= SCALING_GOODNESS;
1786 if (h > ask_h)
1787 val -= SCALING_GOODNESS;
1788 }
1789
1790 val -= abs(w - ask_w);
1791 val -= abs(h - ask_h);
1792
1793 if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE])
1794 val -= SCALING_GOODNESS_EXTREME;
1795
1796 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
1797 w, ask_h, h, ask_h, val);
1798
1799 return val;
1800}
1801
1802static void smiapp_set_compose_binner(struct v4l2_subdev *subdev,
1803 struct v4l2_subdev_fh *fh,
1804 struct v4l2_subdev_selection *sel,
1805 struct v4l2_rect **crops,
1806 struct v4l2_rect *comp)
1807{
1808 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1809 unsigned int i;
1810 unsigned int binh = 1, binv = 1;
aca6bf54 1811 int best = scaling_goodness(
ccfc97bd
SA		 1812 subdev,
1813 crops[SMIAPP_PAD_SINK]->width, sel->r.width,
1814 crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags);
1815
1816 for (i = 0; i < sensor->nbinning_subtypes; i++) {
1817 int this = scaling_goodness(
1818 subdev,
1819 crops[SMIAPP_PAD_SINK]->width
1820 / sensor->binning_subtypes[i].horizontal,
1821 sel->r.width,
1822 crops[SMIAPP_PAD_SINK]->height
1823 / sensor->binning_subtypes[i].vertical,
1824 sel->r.height, sel->flags);
1825
1826 if (this > best) {
1827 binh = sensor->binning_subtypes[i].horizontal;
1828 binv = sensor->binning_subtypes[i].vertical;
1829 best = this;
1830 }
1831 }
1832 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1833 sensor->binning_vertical = binv;
1834 sensor->binning_horizontal = binh;
1835 }
1836
1837 sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1;
1838 sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1;
1839}
1840
1841/*
1842 * Calculate best scaling ratio and mode for given output resolution.
1843 *
1844 * Try all of these: horizontal ratio, vertical ratio and smallest
1845 * size possible (horizontally).
1846 *
1847 * Also try whether horizontal scaler or full scaler gives a better
1848 * result.
1849 */
1850static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev,
1851 struct v4l2_subdev_fh *fh,
1852 struct v4l2_subdev_selection *sel,
1853 struct v4l2_rect **crops,
1854 struct v4l2_rect *comp)
1855{
1856 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1857 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1858 u32 min, max, a, b, max_m;
1859 u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
1860 int mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1861 u32 try[4];
1862 u32 ntry = 0;
1863 unsigned int i;
1864 int best = INT_MIN;
1865
1866 sel->r.width = min_t(unsigned int, sel->r.width,
1867 crops[SMIAPP_PAD_SINK]->width);
1868 sel->r.height = min_t(unsigned int, sel->r.height,
1869 crops[SMIAPP_PAD_SINK]->height);
1870
1871 a = crops[SMIAPP_PAD_SINK]->width
1872 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width;
1873 b = crops[SMIAPP_PAD_SINK]->height
1874 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height;
1875 max_m = crops[SMIAPP_PAD_SINK]->width
1876 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]
1877 / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE];
1878
7be5c289
AS		 1879 a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1880 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1881 b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1882 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1883 max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1884 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
ccfc97bd
SA		 1885
1886 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
1887
1888 min = min(max_m, min(a, b));
1889 max = min(max_m, max(a, b));
1890
1891 try[ntry] = min;
1892 ntry++;
1893 if (min != max) {
1894 try[ntry] = max;
1895 ntry++;
1896 }
1897 if (max != max_m) {
1898 try[ntry] = min + 1;
1899 ntry++;
1900 if (min != max) {
1901 try[ntry] = max + 1;
1902 ntry++;
1903 }
1904 }
1905
1906 for (i = 0; i < ntry; i++) {
1907 int this = scaling_goodness(
1908 subdev,
1909 crops[SMIAPP_PAD_SINK]->width
1910 / try[i]
1911 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1912 sel->r.width,
1913 crops[SMIAPP_PAD_SINK]->height,
1914 sel->r.height,
1915 sel->flags);
1916
1917 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
1918
1919 if (this > best) {
1920 scale_m = try[i];
1921 mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1922 best = this;
1923 }
1924
1925 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1926 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
1927 continue;
1928
1929 this = scaling_goodness(
1930 subdev, crops[SMIAPP_PAD_SINK]->width
1931 / try[i]
1932 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1933 sel->r.width,
1934 crops[SMIAPP_PAD_SINK]->height
1935 / try[i]
1936 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1937 sel->r.height,
1938 sel->flags);
1939
1940 if (this > best) {
1941 scale_m = try[i];
1942 mode = SMIAPP_SCALING_MODE_BOTH;
1943 best = this;
1944 }
1945 }
1946
1947 sel->r.width =
1948 (crops[SMIAPP_PAD_SINK]->width
1949 / scale_m
1950 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1;
1951 if (mode == SMIAPP_SCALING_MODE_BOTH)
1952 sel->r.height =
1953 (crops[SMIAPP_PAD_SINK]->height
1954 / scale_m
1955 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN])
1956 & ~1;
1957 else
1958 sel->r.height = crops[SMIAPP_PAD_SINK]->height;
1959
1960 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1961 sensor->scale_m = scale_m;
1962 sensor->scaling_mode = mode;
1963 }
1964}
1965/* We're only called on source pads. This function sets scaling. */
1966static int smiapp_set_compose(struct v4l2_subdev *subdev,
1967 struct v4l2_subdev_fh *fh,
1968 struct v4l2_subdev_selection *sel)
1969{
1970 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1971 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1972 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1973
1974 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
1975
1976 sel->r.top = 0;
1977 sel->r.left = 0;
1978
1979 if (ssd == sensor->binner)
1980 smiapp_set_compose_binner(subdev, fh, sel, crops, comp);
1981 else
1982 smiapp_set_compose_scaler(subdev, fh, sel, crops, comp);
1983
1984 *comp = sel->r;
1985 smiapp_propagate(subdev, fh, sel->which,
5689b288 1986 V4L2_SEL_TGT_COMPOSE);
ccfc97bd
SA		 1987
1988 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1989 return smiapp_update_mode(sensor);
1990
1991 return 0;
1992}
1993
1994static int __smiapp_sel_supported(struct v4l2_subdev *subdev,
1995 struct v4l2_subdev_selection *sel)
1996{
1997 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1998 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1999
2000 /* We only implement crop in three places. */
2001 switch (sel->target) {
5689b288
SA		 2002 case V4L2_SEL_TGT_CROP:
2003 case V4L2_SEL_TGT_CROP_BOUNDS:
ccfc97bd
SA		 2004 if (ssd == sensor->pixel_array
2005 && sel->pad == SMIAPP_PA_PAD_SRC)
2006 return 0;
2007 if (ssd == sensor->src
2008 && sel->pad == SMIAPP_PAD_SRC)
2009 return 0;
2010 if (ssd == sensor->scaler
2011 && sel->pad == SMIAPP_PAD_SINK
2012 && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2013 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
2014 return 0;
2015 return -EINVAL;
5689b288
SA		 2016 case V4L2_SEL_TGT_COMPOSE:
2017 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 2018 if (sel->pad == ssd->source_pad)
2019 return -EINVAL;
2020 if (ssd == sensor->binner)
2021 return 0;
2022 if (ssd == sensor->scaler
2023 && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2024 != SMIAPP_SCALING_CAPABILITY_NONE)
2025 return 0;
2026 /* Fall through */
2027 default:
2028 return -EINVAL;
2029 }
2030}
2031
2032static int smiapp_set_crop(struct v4l2_subdev *subdev,
2033 struct v4l2_subdev_fh *fh,
2034 struct v4l2_subdev_selection *sel)
2035{
2036 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2037 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2038 struct v4l2_rect *src_size, *crops[SMIAPP_PADS];
2039 struct v4l2_rect _r;
2040
2041 smiapp_get_crop_compose(subdev, fh, crops, NULL, sel->which);
2042
2043 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2044 if (sel->pad == ssd->sink_pad)
2045 src_size = &ssd->sink_fmt;
2046 else
2047 src_size = &ssd->compose;
2048 } else {
2049 if (sel->pad == ssd->sink_pad) {
2050 _r.left = 0;
2051 _r.top = 0;
2052 _r.width = v4l2_subdev_get_try_format(fh, sel->pad)
2053 ->width;
2054 _r.height = v4l2_subdev_get_try_format(fh, sel->pad)
2055 ->height;
2056 src_size = &_r;
2057 } else {
2058 src_size =
2059 v4l2_subdev_get_try_compose(
2060 fh, ssd->sink_pad);
2061 }
2062 }
2063
2064 if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) {
2065 sel->r.left = 0;
2066 sel->r.top = 0;
2067 }
2068
2069 sel->r.width = min(sel->r.width, src_size->width);
2070 sel->r.height = min(sel->r.height, src_size->height);
2071
f90580ca
RR		 2072 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2073 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
ccfc97bd
SA		 2074
2075 *crops[sel->pad] = sel->r;
2076
2077 if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK)
2078 smiapp_propagate(subdev, fh, sel->which,
5689b288 2079 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 2080
2081 return 0;
2082}
2083
2084static int __smiapp_get_selection(struct v4l2_subdev *subdev,
2085 struct v4l2_subdev_fh *fh,
2086 struct v4l2_subdev_selection *sel)
2087{
2088 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2089 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2090 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2091 struct v4l2_rect sink_fmt;
2092 int ret;
2093
2094 ret = __smiapp_sel_supported(subdev, sel);
2095 if (ret)
2096 return ret;
2097
2098 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
2099
2100 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2101 sink_fmt = ssd->sink_fmt;
2102 } else {
2103 struct v4l2_mbus_framefmt *fmt =
2104 v4l2_subdev_get_try_format(fh, ssd->sink_pad);
2105
2106 sink_fmt.left = 0;
2107 sink_fmt.top = 0;
2108 sink_fmt.width = fmt->width;
2109 sink_fmt.height = fmt->height;
2110 }
2111
2112 switch (sel->target) {
5689b288 2113 case V4L2_SEL_TGT_CROP_BOUNDS:
ccfc97bd
SA		 2114 if (ssd == sensor->pixel_array) {
2115 sel->r.width =
2116 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2117 sel->r.height =
2118 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2119 } else if (sel->pad == ssd->sink_pad) {
2120 sel->r = sink_fmt;
2121 } else {
2122 sel->r = *comp;
2123 }
2124 break;
5689b288
SA		 2125 case V4L2_SEL_TGT_CROP:
2126 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 2127 sel->r = *crops[sel->pad];
2128 break;
5689b288 2129 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2130 sel->r = *comp;
2131 break;
2132 }
2133
2134 return 0;
2135}
2136
2137static int smiapp_get_selection(struct v4l2_subdev *subdev,
2138 struct v4l2_subdev_fh *fh,
2139 struct v4l2_subdev_selection *sel)
2140{
2141 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2142 int rval;
2143
2144 mutex_lock(&sensor->mutex);
2145 rval = __smiapp_get_selection(subdev, fh, sel);
2146 mutex_unlock(&sensor->mutex);
2147
2148 return rval;
2149}
2150static int smiapp_set_selection(struct v4l2_subdev *subdev,
2151 struct v4l2_subdev_fh *fh,
2152 struct v4l2_subdev_selection *sel)
2153{
2154 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2155 int ret;
2156
2157 ret = __smiapp_sel_supported(subdev, sel);
2158 if (ret)
2159 return ret;
2160
2161 mutex_lock(&sensor->mutex);
2162
2163 sel->r.left = max(0, sel->r.left & ~1);
2164 sel->r.top = max(0, sel->r.top & ~1);
f90580ca
RR		 2165 sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
2166 sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
ccfc97bd
SA		 2167
2168 sel->r.width = max_t(unsigned int,
2169 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
2170 sel->r.width);
2171 sel->r.height = max_t(unsigned int,
2172 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
2173 sel->r.height);
2174
2175 switch (sel->target) {
5689b288 2176 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 2177 ret = smiapp_set_crop(subdev, fh, sel);
2178 break;
5689b288 2179 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2180 ret = smiapp_set_compose(subdev, fh, sel);
2181 break;
2182 default:
2183 BUG();
2184 }
2185
2186 mutex_unlock(&sensor->mutex);
2187 return ret;
2188}
2189
2190static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2191{
2192 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2193
2194 *frames = sensor->frame_skip;
2195 return 0;
2196}
2197
2198/* -----------------------------------------------------------------------------
2199 * sysfs attributes
2200 */
2201
2202static ssize_t
2203smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2204 char *buf)
2205{
2206 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2207 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2208 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2209 unsigned int nbytes;
2210
2211 if (!sensor->dev_init_done)
2212 return -EBUSY;
2213
2214 if (!sensor->nvm_size) {
2215 /* NVM not read yet - read it now */
2216 sensor->nvm_size = sensor->platform_data->nvm_size;
2217 if (smiapp_set_power(subdev, 1) < 0)
2218 return -ENODEV;
2219 if (smiapp_read_nvm(sensor, sensor->nvm)) {
2220 dev_err(&client->dev, "nvm read failed\n");
2221 return -ENODEV;
2222 }
2223 smiapp_set_power(subdev, 0);
2224 }
2225 /*
2226 * NVM is still way below a PAGE_SIZE, so we can safely
2227 * assume this for now.
2228 */
2229 nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE);
2230 memcpy(buf, sensor->nvm, nbytes);
2231
2232 return nbytes;
2233}
2234static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL);
2235
eba66b3e
SA		 2236static ssize_t
2237smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
2238 char *buf)
2239{
2240 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2241 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2242 struct smiapp_module_info *minfo = &sensor->minfo;
2243
2244 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2245 minfo->manufacturer_id, minfo->model_id,
2246 minfo->revision_number_major) + 1;
2247}
2248
2249static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL);
2250
ccfc97bd
SA		 2251/* -----------------------------------------------------------------------------
2252 * V4L2 subdev core operations
2253 */
2254
2255static int smiapp_identify_module(struct v4l2_subdev *subdev)
2256{
2257 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2258 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2259 struct smiapp_module_info *minfo = &sensor->minfo;
2260 unsigned int i;
2261 int rval = 0;
2262
2263 minfo->name = SMIAPP_NAME;
2264
2265 /* Module info */
98add8e8
SA		 2266 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
2267 &minfo->manufacturer_id);
ccfc97bd 2268 if (!rval)
98add8e8
SA		 2269 rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
2270 &minfo->model_id);
ccfc97bd 2271 if (!rval)
98add8e8
SA		 2272 rval = smiapp_read_8only(sensor,
2273 SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
2274 &minfo->revision_number_major);
ccfc97bd 2275 if (!rval)
98add8e8
SA		 2276 rval = smiapp_read_8only(sensor,
2277 SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
2278 &minfo->revision_number_minor);
ccfc97bd 2279 if (!rval)
98add8e8
SA		 2280 rval = smiapp_read_8only(sensor,
2281 SMIAPP_REG_U8_MODULE_DATE_YEAR,
2282 &minfo->module_year);
ccfc97bd 2283 if (!rval)
98add8e8
SA		 2284 rval = smiapp_read_8only(sensor,
2285 SMIAPP_REG_U8_MODULE_DATE_MONTH,
2286 &minfo->module_month);
ccfc97bd 2287 if (!rval)
98add8e8
SA		 2288 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
2289 &minfo->module_day);
ccfc97bd
SA		 2290
2291 /* Sensor info */
2292 if (!rval)
98add8e8
SA		 2293 rval = smiapp_read_8only(sensor,
2294 SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
2295 &minfo->sensor_manufacturer_id);
ccfc97bd 2296 if (!rval)
98add8e8
SA		 2297 rval = smiapp_read_8only(sensor,
2298 SMIAPP_REG_U16_SENSOR_MODEL_ID,
2299 &minfo->sensor_model_id);
ccfc97bd 2300 if (!rval)
98add8e8
SA		 2301 rval = smiapp_read_8only(sensor,
2302 SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
2303 &minfo->sensor_revision_number);
ccfc97bd 2304 if (!rval)
98add8e8
SA		 2305 rval = smiapp_read_8only(sensor,
2306 SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
2307 &minfo->sensor_firmware_version);
ccfc97bd
SA		 2308
2309 /* SMIA */
2310 if (!rval)
98add8e8
SA		 2311 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2312 &minfo->smia_version);
ccfc97bd 2313 if (!rval)
98add8e8
SA		 2314 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2315 &minfo->smiapp_version);
ccfc97bd
SA		 2316
2317 if (rval) {
2318 dev_err(&client->dev, "sensor detection failed\n");
2319 return -ENODEV;
2320 }
2321
2322 dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n",
2323 minfo->manufacturer_id, minfo->model_id);
2324
2325 dev_dbg(&client->dev,
2326 "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n",
2327 minfo->revision_number_major, minfo->revision_number_minor,
2328 minfo->module_year, minfo->module_month, minfo->module_day);
2329
2330 dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n",
2331 minfo->sensor_manufacturer_id, minfo->sensor_model_id);
2332
2333 dev_dbg(&client->dev,
2334 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2335 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2336
2337 dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n",
2338 minfo->smia_version, minfo->smiapp_version);
2339
2340 /*
2341 * Some modules have bad data in the lvalues below. Hope the
2342 * rvalues have better stuff. The lvalues are module
2343 * parameters whereas the rvalues are sensor parameters.
2344 */
2345 if (!minfo->manufacturer_id && !minfo->model_id) {
2346 minfo->manufacturer_id = minfo->sensor_manufacturer_id;
2347 minfo->model_id = minfo->sensor_model_id;
2348 minfo->revision_number_major = minfo->sensor_revision_number;
2349 }
2350
2351 for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) {
2352 if (smiapp_module_idents[i].manufacturer_id
2353 != minfo->manufacturer_id)
2354 continue;
2355 if (smiapp_module_idents[i].model_id != minfo->model_id)
2356 continue;
2357 if (smiapp_module_idents[i].flags
2358 & SMIAPP_MODULE_IDENT_FLAG_REV_LE) {
2359 if (smiapp_module_idents[i].revision_number_major
2360 < minfo->revision_number_major)
2361 continue;
2362 } else {
2363 if (smiapp_module_idents[i].revision_number_major
2364 != minfo->revision_number_major)
2365 continue;
2366 }
2367
2368 minfo->name = smiapp_module_idents[i].name;
2369 minfo->quirk = smiapp_module_idents[i].quirk;
2370 break;
2371 }
2372
2373 if (i >= ARRAY_SIZE(smiapp_module_idents))
2374 dev_warn(&client->dev,
2375 "no quirks for this module; let's hope it's fully compliant\n");
2376
2377 dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n",
2378 minfo->name, minfo->manufacturer_id, minfo->model_id,
2379 minfo->revision_number_major);
2380
2381 strlcpy(subdev->name, sensor->minfo.name, sizeof(subdev->name));
2382
2383 return 0;
2384}
2385
2386static const struct v4l2_subdev_ops smiapp_ops;
2387static const struct v4l2_subdev_internal_ops smiapp_internal_ops;
2388static const struct media_entity_operations smiapp_entity_ops;
2389
2390static int smiapp_registered(struct v4l2_subdev *subdev)
2391{
2392 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2393 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1e9240b3 2394 struct smiapp_pll *pll = &sensor->pll;
ccfc97bd
SA		 2395 struct smiapp_subdev *last = NULL;
2396 u32 tmp;
2397 unsigned int i;
2398 int rval;
2399
5fba9888 2400 sensor->vana = devm_regulator_get(&client->dev, "vana");
ccfc97bd
SA		 2401 if (IS_ERR(sensor->vana)) {
2402 dev_err(&client->dev, "could not get regulator for vana\n");
24644035 2403 return PTR_ERR(sensor->vana);
ccfc97bd
SA		 2404 }
2405
2547428d 2406 if (!sensor->platform_data->set_xclk) {
a354177f 2407 sensor->ext_clk = devm_clk_get(&client->dev, "ext_clk");
2547428d 2408 if (IS_ERR(sensor->ext_clk)) {
a354177f 2409 dev_err(&client->dev, "could not get clock\n");
24644035 2410 return PTR_ERR(sensor->ext_clk);
2547428d
SA		 2411 }
2412
2413 rval = clk_set_rate(sensor->ext_clk,
2414 sensor->platform_data->ext_clk);
2415 if (rval < 0) {
2416 dev_err(&client->dev,
a354177f 2417 "unable to set clock freq to %u\n",
2547428d 2418 sensor->platform_data->ext_clk);
24644035 2419 return rval;
2547428d
SA		 2420 }
2421 }
2422
9945374e 2423 if (gpio_is_valid(sensor->platform_data->xshutdown)) {
24644035
SA		 2424 rval = devm_gpio_request_one(
2425 &client->dev, sensor->platform_data->xshutdown, 0,
2426 "SMIA++ xshutdown");
2427 if (rval < 0) {
ccfc97bd
SA		 2428 dev_err(&client->dev,
2429 "unable to acquire reset gpio %d\n",
2430 sensor->platform_data->xshutdown);
24644035 2431 return rval;
ccfc97bd
SA		 2432 }
2433 }
2434
2435 rval = smiapp_power_on(sensor);
b015ba29
LP		 2436 if (rval)
2437 return -ENODEV;
ccfc97bd
SA		 2438
2439 rval = smiapp_identify_module(subdev);
2440 if (rval) {
2441 rval = -ENODEV;
2442 goto out_power_off;
2443 }
2444
2445 rval = smiapp_get_all_limits(sensor);
2446 if (rval) {
2447 rval = -ENODEV;
2448 goto out_power_off;
2449 }
2450
2451 /*
2452 * Handle Sensor Module orientation on the board.
2453 *
2454 * The application of H-FLIP and V-FLIP on the sensor is modified by
2455 * the sensor orientation on the board.
2456 *
2457 * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
2458 * both H-FLIP and V-FLIP for normal operation which also implies
2459 * that a set/unset operation for user space HFLIP and VFLIP v4l2
2460 * controls will need to be internally inverted.
2461 *
2462 * Rotation also changes the bayer pattern.
2463 */
2464 if (sensor->platform_data->module_board_orient ==
2465 SMIAPP_MODULE_BOARD_ORIENT_180)
2466 sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP |
2467 SMIAPP_IMAGE_ORIENTATION_VFLIP;
2468
e5a3f7b8
SA		 2469 rval = smiapp_call_quirk(sensor, limits);
2470 if (rval) {
2471 dev_err(&client->dev, "limits quirks failed\n");
2472 goto out_power_off;
2473 }
2474
ccfc97bd
SA		 2475 rval = smiapp_get_mbus_formats(sensor);
2476 if (rval) {
2477 rval = -ENODEV;
2478 goto out_power_off;
2479 }
2480
2481 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) {
2482 u32 val;
2483
1e73eea7 2484 rval = smiapp_read(sensor,
ccfc97bd
SA		 2485 SMIAPP_REG_U8_BINNING_SUBTYPES, &val);
2486 if (rval < 0) {
2487 rval = -ENODEV;
2488 goto out_power_off;
2489 }
2490 sensor->nbinning_subtypes = min_t(u8, val,
2491 SMIAPP_BINNING_SUBTYPES);
2492
2493 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2494 rval = smiapp_read(
1e73eea7 2495 sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val);
ccfc97bd
SA		 2496 if (rval < 0) {
2497 rval = -ENODEV;
2498 goto out_power_off;
2499 }
2500 sensor->binning_subtypes[i] =
2501 *(struct smiapp_binning_subtype *)&val;
2502
2503 dev_dbg(&client->dev, "binning %xx%x\n",
2504 sensor->binning_subtypes[i].horizontal,
2505 sensor->binning_subtypes[i].vertical);
2506 }
2507 }
2508 sensor->binning_horizontal = 1;
2509 sensor->binning_vertical = 1;
2510
eba66b3e
SA		 2511 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
2512 dev_err(&client->dev, "sysfs ident entry creation failed\n");
2513 rval = -ENOENT;
2514 goto out_power_off;
2515 }
ccfc97bd
SA		 2516 /* SMIA++ NVM initialization - it will be read from the sensor
2517 * when it is first requested by userspace.
2518 */
2519 if (sensor->minfo.smiapp_version && sensor->platform_data->nvm_size) {
31c1d17b
SK		 2520 sensor->nvm = devm_kzalloc(&client->dev,
2521 sensor->platform_data->nvm_size, GFP_KERNEL);
ccfc97bd
SA		 2522 if (sensor->nvm == NULL) {
2523 dev_err(&client->dev, "nvm buf allocation failed\n");
2524 rval = -ENOMEM;
eba66b3e 2525 goto out_ident_release;
ccfc97bd
SA		 2526 }
2527
2528 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
2529 dev_err(&client->dev, "sysfs nvm entry failed\n");
2530 rval = -EBUSY;
eba66b3e 2531 goto out_ident_release;
ccfc97bd
SA		 2532 }
2533 }
2534
ccfc97bd
SA		 2535 /* We consider this as profile 0 sensor if any of these are zero. */
2536 if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] ||
2537 !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] ||
2538 !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] ||
2539 !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) {
2540 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0;
2541 } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2542 != SMIAPP_SCALING_CAPABILITY_NONE) {
2543 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2544 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2545 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1;
2546 else
2547 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2;
2548 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2549 sensor->ssds_used++;
2550 } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2551 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
2552 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2553 sensor->ssds_used++;
2554 }
2555 sensor->binner = &sensor->ssds[sensor->ssds_used];
2556 sensor->ssds_used++;
2557 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
2558 sensor->ssds_used++;
2559
2560 sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2561
2562 for (i = 0; i < SMIAPP_SUBDEVS; i++) {
2563 struct {
2564 struct smiapp_subdev *ssd;
2565 char *name;
2566 } const __this[] = {
2567 { sensor->scaler, "scaler", },
2568 { sensor->binner, "binner", },
2569 { sensor->pixel_array, "pixel array", },
2570 }, *_this = &__this[i];
2571 struct smiapp_subdev *this = _this->ssd;
2572
2573 if (!this)
2574 continue;
2575
2576 if (this != sensor->src)
2577 v4l2_subdev_init(&this->sd, &smiapp_ops);
2578
2579 this->sensor = sensor;
2580
2581 if (this == sensor->pixel_array) {
2582 this->npads = 1;
2583 } else {
2584 this->npads = 2;
2585 this->source_pad = 1;
2586 }
2587
2588 snprintf(this->sd.name,
f8d36b89
SA		 2589 sizeof(this->sd.name), "%s %s %d-%4.4x",
2590 sensor->minfo.name, _this->name,
2591 i2c_adapter_id(client->adapter), client->addr);
ccfc97bd
SA		 2592
2593 this->sink_fmt.width =
2594 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2595 this->sink_fmt.height =
2596 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2597 this->compose.width = this->sink_fmt.width;
2598 this->compose.height = this->sink_fmt.height;
2599 this->crop[this->source_pad] = this->compose;
2600 this->pads[this->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2601 if (this != sensor->pixel_array) {
2602 this->crop[this->sink_pad] = this->compose;
2603 this->pads[this->sink_pad].flags = MEDIA_PAD_FL_SINK;
2604 }
2605
2606 this->sd.entity.ops = &smiapp_entity_ops;
2607
2608 if (last == NULL) {
2609 last = this;
2610 continue;
2611 }
2612
2613 this->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2614 this->sd.internal_ops = &smiapp_internal_ops;
60b31b72 2615 this->sd.owner = THIS_MODULE;
ccfc97bd
SA		 2616 v4l2_set_subdevdata(&this->sd, client);
2617
2618 rval = media_entity_init(&this->sd.entity,
2619 this->npads, this->pads, 0);
2620 if (rval) {
2621 dev_err(&client->dev,
2622 "media_entity_init failed\n");
2623 goto out_nvm_release;
2624 }
2625
2626 rval = media_entity_create_link(&this->sd.entity,
2627 this->source_pad,
2628 &last->sd.entity,
2629 last->sink_pad,
2630 MEDIA_LNK_FL_ENABLED |
2631 MEDIA_LNK_FL_IMMUTABLE);
2632 if (rval) {
2633 dev_err(&client->dev,
2634 "media_entity_create_link failed\n");
2635 goto out_nvm_release;
2636 }
2637
2638 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev,
2639 &this->sd);
2640 if (rval) {
2641 dev_err(&client->dev,
2642 "v4l2_device_register_subdev failed\n");
2643 goto out_nvm_release;
2644 }
2645
2646 last = this;
2647 }
2648
2649 dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
2650
2651 sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
2652
2653 /* final steps */
2654 smiapp_read_frame_fmt(sensor);
2655 rval = smiapp_init_controls(sensor);
2656 if (rval < 0)
2657 goto out_nvm_release;
2658
1e9240b3 2659 /* prepare PLL configuration input values */
f5984bbd
SA		 2660 pll->bus_type = SMIAPP_PLL_BUS_TYPE_CSI2;
2661 pll->csi2.lanes = sensor->platform_data->lanes;
1e9240b3 2662 pll->ext_clk_freq_hz = sensor->platform_data->ext_clk;
03efb2a0
SA		 2663 pll->flags = smiapp_call_quirk(sensor, pll_flags);
2664
1e9240b3
SA		 2665 /* Profile 0 sensors have no separate OP clock branch. */
2666 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
2667 pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
1e9240b3
SA		 2668 pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2669
f85698cd 2670 mutex_lock(&sensor->mutex);
ccfc97bd 2671 rval = smiapp_update_mode(sensor);
f85698cd 2672 mutex_unlock(&sensor->mutex);
ccfc97bd
SA		 2673 if (rval) {
2674 dev_err(&client->dev, "update mode failed\n");
2675 goto out_nvm_release;
2676 }
2677
2678 sensor->streaming = false;
2679 sensor->dev_init_done = true;
2680
2681 /* check flash capability */
1e73eea7 2682 rval = smiapp_read(sensor, SMIAPP_REG_U8_FLASH_MODE_CAPABILITY, &tmp);
ccfc97bd
SA		 2683 sensor->flash_capability = tmp;
2684 if (rval)
2685 goto out_nvm_release;
2686
2687 smiapp_power_off(sensor);
2688
2689 return 0;
2690
2691out_nvm_release:
2692 device_remove_file(&client->dev, &dev_attr_nvm);
2693
eba66b3e
SA		 2694out_ident_release:
2695 device_remove_file(&client->dev, &dev_attr_ident);
2696
ccfc97bd 2697out_power_off:
ccfc97bd 2698 smiapp_power_off(sensor);
ccfc97bd
SA		 2699 return rval;
2700}
2701
2702static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2703{
2704 struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
2705 struct smiapp_sensor *sensor = ssd->sensor;
2706 u32 mbus_code =
2707 smiapp_csi_data_formats[smiapp_pixel_order(sensor)].code;
2708 unsigned int i;
2709
2710 mutex_lock(&sensor->mutex);
2711
2712 for (i = 0; i < ssd->npads; i++) {
2713 struct v4l2_mbus_framefmt *try_fmt =
2714 v4l2_subdev_get_try_format(fh, i);
2715 struct v4l2_rect *try_crop = v4l2_subdev_get_try_crop(fh, i);
2716 struct v4l2_rect *try_comp;
2717
2718 try_fmt->width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2719 try_fmt->height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2720 try_fmt->code = mbus_code;
7ed0b291 2721 try_fmt->field = V4L2_FIELD_NONE;
ccfc97bd
SA		 2722
2723 try_crop->top = 0;
2724 try_crop->left = 0;
2725 try_crop->width = try_fmt->width;
2726 try_crop->height = try_fmt->height;
2727
2728 if (ssd != sensor->pixel_array)
2729 continue;
2730
2731 try_comp = v4l2_subdev_get_try_compose(fh, i);
2732 *try_comp = *try_crop;
2733 }
2734
2735 mutex_unlock(&sensor->mutex);
2736
2737 return smiapp_set_power(sd, 1);
2738}
2739
2740static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2741{
2742 return smiapp_set_power(sd, 0);
2743}
2744
2745static const struct v4l2_subdev_video_ops smiapp_video_ops = {
2746 .s_stream = smiapp_set_stream,
2747};
2748
2749static const struct v4l2_subdev_core_ops smiapp_core_ops = {
2750 .s_power = smiapp_set_power,
2751};
2752
2753static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
2754 .enum_mbus_code = smiapp_enum_mbus_code,
2755 .get_fmt = smiapp_get_format,
2756 .set_fmt = smiapp_set_format,
2757 .get_selection = smiapp_get_selection,
2758 .set_selection = smiapp_set_selection,
2759};
2760
2761static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
2762 .g_skip_frames = smiapp_get_skip_frames,
2763};
2764
2765static const struct v4l2_subdev_ops smiapp_ops = {
2766 .core = &smiapp_core_ops,
2767 .video = &smiapp_video_ops,
2768 .pad = &smiapp_pad_ops,
2769 .sensor = &smiapp_sensor_ops,
2770};
2771
2772static const struct media_entity_operations smiapp_entity_ops = {
2773 .link_validate = v4l2_subdev_link_validate,
2774};
2775
2776static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
2777 .registered = smiapp_registered,
2778 .open = smiapp_open,
2779 .close = smiapp_close,
2780};
2781
2782static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
2783 .open = smiapp_open,
2784 .close = smiapp_close,
2785};
2786
2787/* -----------------------------------------------------------------------------
2788 * I2C Driver
2789 */
2790
2791#ifdef CONFIG_PM
2792
2793static int smiapp_suspend(struct device *dev)
2794{
2795 struct i2c_client *client = to_i2c_client(dev);
2796 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2797 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2798 bool streaming;
2799
2800 BUG_ON(mutex_is_locked(&sensor->mutex));
2801
2802 if (sensor->power_count == 0)
2803 return 0;
2804
2805 if (sensor->streaming)
2806 smiapp_stop_streaming(sensor);
2807
2808 streaming = sensor->streaming;
2809
2810 smiapp_power_off(sensor);
2811
2812 /* save state for resume */
2813 sensor->streaming = streaming;
2814
2815 return 0;
2816}
2817
2818static int smiapp_resume(struct device *dev)
2819{
2820 struct i2c_client *client = to_i2c_client(dev);
2821 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2822 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2823 int rval;
2824
2825 if (sensor->power_count == 0)
2826 return 0;
2827
2828 rval = smiapp_power_on(sensor);
2829 if (rval)
2830 return rval;
2831
2832 if (sensor->streaming)
2833 rval = smiapp_start_streaming(sensor);
2834
2835 return rval;
2836}
2837
2838#else
2839
2840#define smiapp_suspend NULL
2841#define smiapp_resume NULL
2842
2843#endif /* CONFIG_PM */
2844
2845static int smiapp_probe(struct i2c_client *client,
2846 const struct i2c_device_id *devid)
2847{
2848 struct smiapp_sensor *sensor;
ccfc97bd
SA		 2849
2850 if (client->dev.platform_data == NULL)
2851 return -ENODEV;
2852
31c1d17b 2853 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
ccfc97bd
SA		 2854 if (sensor == NULL)
2855 return -ENOMEM;
2856
2857 sensor->platform_data = client->dev.platform_data;
2858 mutex_init(&sensor->mutex);
2859 mutex_init(&sensor->power_mutex);
2860 sensor->src = &sensor->ssds[sensor->ssds_used];
2861
2862 v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops);
2863 sensor->src->sd.internal_ops = &smiapp_internal_src_ops;
2864 sensor->src->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2865 sensor->src->sensor = sensor;
2866
2867 sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE;
31c1d17b 2868 return media_entity_init(&sensor->src->sd.entity, 2,
ccfc97bd 2869 sensor->src->pads, 0);
ccfc97bd
SA		 2870}
2871
bf306900 2872static int smiapp_remove(struct i2c_client *client)
ccfc97bd
SA		 2873{
2874 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2875 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2876 unsigned int i;
2877
2878 if (sensor->power_count) {
9945374e 2879 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 2880 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 2881 if (sensor->platform_data->set_xclk)
2882 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
2883 else
d0aae004 2884 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 2885 sensor->power_count = 0;
2886 }
2887
eba66b3e 2888 device_remove_file(&client->dev, &dev_attr_ident);
31c1d17b 2889 if (sensor->nvm)
ccfc97bd 2890 device_remove_file(&client->dev, &dev_attr_nvm);
ccfc97bd
SA		 2891
2892 for (i = 0; i < sensor->ssds_used; i++) {
ccfc97bd 2893 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2a3e7256 2894 media_entity_cleanup(&sensor->ssds[i].sd.entity);
ccfc97bd
SA		 2895 }
2896 smiapp_free_controls(sensor);
ccfc97bd
SA		 2897
2898 return 0;
2899}
2900
2901static const struct i2c_device_id smiapp_id_table[] = {
2902 { SMIAPP_NAME, 0 },
2903 { },
2904};
2905MODULE_DEVICE_TABLE(i2c, smiapp_id_table);
2906
2907static const struct dev_pm_ops smiapp_pm_ops = {
2908 .suspend = smiapp_suspend,
2909 .resume = smiapp_resume,
2910};
2911
2912static struct i2c_driver smiapp_i2c_driver = {
2913 .driver = {
2914 .name = SMIAPP_NAME,
2915 .pm = &smiapp_pm_ops,
2916 },
2917 .probe = smiapp_probe,
bf306900 2918 .remove = smiapp_remove,
ccfc97bd
SA		 2919 .id_table = smiapp_id_table,
2920};
2921
2922module_i2c_driver(smiapp_i2c_driver);
2923
8c5dff90 2924MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
ccfc97bd
SA		 2925MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
2926MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.534513 seconds and 5 git commands to generate.