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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / i2c / smiapp / smiapp-core.c
bloba80d7701b519d602df57ae3edb3142e7e4318f49
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * drivers/media/i2c/smiapp/smiapp-core.c
4 *
5 * Generic driver for SMIA/SMIA++ compliant camera modules
6 *
7 * Copyright (C) 2010--2012 Nokia Corporation
8 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
9 *
10 * Based on smiapp driver by Vimarsh Zutshi
11 * Based on jt8ev1.c by Vimarsh Zutshi
12 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
13 */
14
15 #include <linux/clk.h>
16 #include <linux/delay.h>
17 #include <linux/device.h>
18 #include <linux/gpio.h>
19 #include <linux/gpio/consumer.h>
20 #include <linux/module.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/property.h>
23 #include <linux/regulator/consumer.h>
24 #include <linux/slab.h>
25 #include <linux/smiapp.h>
26 #include <linux/v4l2-mediabus.h>
27 #include <media/v4l2-fwnode.h>
28 #include <media/v4l2-device.h>
29
30 #include "smiapp.h"
31
32 #define SMIAPP_ALIGN_DIM(dim, flags) \
33 ((flags) & V4L2_SEL_FLAG_GE \
34 ? ALIGN((dim), 2) \
35 : (dim) & ~1)
36
37 /*
38 * smiapp_module_idents - supported camera modules
39 */
40 static const struct smiapp_module_ident smiapp_module_idents[] = {
41 SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"),
42 SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"),
43 SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
44 SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
45 SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
46 SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
47 SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
48 SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
49 SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
50 SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
51 SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
52 };
53
54 /*
55 *
56 * Dynamic Capability Identification
57 *
58 */
59
60 static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
61 {
62 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
63 u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
64 unsigned int i;
65 int pixel_count = 0;
66 int line_count = 0;
67 int rval;
68
69 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
70 &fmt_model_type);
71 if (rval)
72 return rval;
73
74 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE,
75 &fmt_model_subtype);
76 if (rval)
77 return rval;
78
79 ncol_desc = (fmt_model_subtype
80 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK)
81 >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT;
82 nrow_desc = fmt_model_subtype
83 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK;
84
85 dev_dbg(&client->dev, "format_model_type %s\n",
86 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE
87 ? "2 byte" :
88 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE
89 ? "4 byte" : "is simply bad");
90
91 for (i = 0; i < ncol_desc + nrow_desc; i++) {
92 u32 desc;
93 u32 pixelcode;
94 u32 pixels;
95 char *which;
96 char *what;
97 u32 reg;
98
99 if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) {
100 reg = SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i);
101 rval = smiapp_read(sensor, reg, &desc);
102 if (rval)
103 return rval;
104
105 pixelcode =
106 (desc
107 & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK)
108 >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT;
109 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK;
110 } else if (fmt_model_type
111 == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) {
112 reg = SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i);
113 rval = smiapp_read(sensor, reg, &desc);
114 if (rval)
115 return rval;
116
117 pixelcode =
118 (desc
119 & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK)
120 >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT;
121 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK;
122 } else {
123 dev_dbg(&client->dev,
124 "invalid frame format model type %d\n",
125 fmt_model_type);
126 return -EINVAL;
127 }
128
129 if (i < ncol_desc)
130 which = "columns";
131 else
132 which = "rows";
133
134 switch (pixelcode) {
135 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
136 what = "embedded";
137 break;
138 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY:
139 what = "dummy";
140 break;
141 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK:
142 what = "black";
143 break;
144 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK:
145 what = "dark";
146 break;
147 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
148 what = "visible";
149 break;
150 default:
151 what = "invalid";
152 break;
153 }
154
155 dev_dbg(&client->dev,
156 "0x%8.8x %s pixels: %d %s (pixelcode %u)\n", reg,
157 what, pixels, which, pixelcode);
158
159 if (i < ncol_desc) {
160 if (pixelcode ==
161 SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE)
162 sensor->visible_pixel_start = pixel_count;
163 pixel_count += pixels;
164 continue;
165 }
166
167 /* Handle row descriptors */
168 switch (pixelcode) {
169 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
170 if (sensor->embedded_end)
171 break;
172 sensor->embedded_start = line_count;
173 sensor->embedded_end = line_count + pixels;
174 break;
175 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
176 sensor->image_start = line_count;
177 break;
178 }
179 line_count += pixels;
180 }
181
182 if (sensor->embedded_end > sensor->image_start) {
183 dev_dbg(&client->dev,
184 "adjusting image start line to %u (was %u)\n",
185 sensor->embedded_end, sensor->image_start);
186 sensor->image_start = sensor->embedded_end;
187 }
188
189 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
190 sensor->embedded_start, sensor->embedded_end);
191 dev_dbg(&client->dev, "image data starts at line %d\n",
192 sensor->image_start);
193
194 return 0;
195 }
196
197 static int smiapp_pll_configure(struct smiapp_sensor *sensor)
198 {
199 struct smiapp_pll *pll = &sensor->pll;
200 int rval;
201
202 rval = smiapp_write(
203 sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt.pix_clk_div);
204 if (rval < 0)
205 return rval;
206
207 rval = smiapp_write(
208 sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt.sys_clk_div);
209 if (rval < 0)
210 return rval;
211
212 rval = smiapp_write(
213 sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div);
214 if (rval < 0)
215 return rval;
216
217 rval = smiapp_write(
218 sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier);
219 if (rval < 0)
220 return rval;
221
222 /* Lane op clock ratio does not apply here. */
223 rval = smiapp_write(
224 sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS,
225 DIV_ROUND_UP(pll->op.sys_clk_freq_hz, 1000000 / 256 / 256));
226 if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
227 return rval;
228
229 rval = smiapp_write(
230 sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op.pix_clk_div);
231 if (rval < 0)
232 return rval;
233
234 return smiapp_write(
235 sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op.sys_clk_div);
236 }
237
238 static int smiapp_pll_try(struct smiapp_sensor *sensor,
239 struct smiapp_pll *pll)
240 {
241 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
242 struct smiapp_pll_limits lim = {
243 .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV],
244 .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV],
245 .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ],
246 .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ],
247 .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER],
248 .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER],
249 .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
250 .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],
251
252 .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
253 .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
254 .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
255 .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
256 .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
257 .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
258 .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
259 .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
260
261 .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
262 .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
263 .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
264 .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
265 .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
266 .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
267 .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
268 .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
269
270 .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
271 .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
272 };
273
274 return smiapp_pll_calculate(&client->dev, &lim, pll);
275 }
276
277 static int smiapp_pll_update(struct smiapp_sensor *sensor)
278 {
279 struct smiapp_pll *pll = &sensor->pll;
280 int rval;
281
282 pll->binning_horizontal = sensor->binning_horizontal;
283 pll->binning_vertical = sensor->binning_vertical;
284 pll->link_freq =
285 sensor->link_freq->qmenu_int[sensor->link_freq->val];
286 pll->scale_m = sensor->scale_m;
287 pll->bits_per_pixel = sensor->csi_format->compressed;
288
289 rval = smiapp_pll_try(sensor, pll);
290 if (rval < 0)
291 return rval;
292
293 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray,
294 pll->pixel_rate_pixel_array);
295 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi);
296
297 return 0;
298 }
299
300
301 /*
302 *
303 * V4L2 Controls handling
304 *
305 */
306
307 static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor)
308 {
309 struct v4l2_ctrl *ctrl = sensor->exposure;
310 int max;
311
312 max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
313 + sensor->vblank->val
314 - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN];
315
316 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max);
317 }
318
319 /*
320 * Order matters.
321 *
322 * 1. Bits-per-pixel, descending.
323 * 2. Bits-per-pixel compressed, descending.
324 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
325 * orders must be defined.
326 */
327 static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = {
328 { MEDIA_BUS_FMT_SGRBG16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_GRBG, },
329 { MEDIA_BUS_FMT_SRGGB16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_RGGB, },
330 { MEDIA_BUS_FMT_SBGGR16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_BGGR, },
331 { MEDIA_BUS_FMT_SGBRG16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_GBRG, },
332 { MEDIA_BUS_FMT_SGRBG14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_GRBG, },
333 { MEDIA_BUS_FMT_SRGGB14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_RGGB, },
334 { MEDIA_BUS_FMT_SBGGR14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_BGGR, },
335 { MEDIA_BUS_FMT_SGBRG14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_GBRG, },
336 { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, },
337 { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, },
338 { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, },
339 { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, },
340 { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, },
341 { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, },
342 { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, },
343 { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, },
344 { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, },
345 { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, },
346 { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, },
347 { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, },
348 { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, },
349 { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, },
350 { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, },
351 { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, },
352 };
353
354 static const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
355
356 #define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
357 - (unsigned long)smiapp_csi_data_formats) \
358 / sizeof(*smiapp_csi_data_formats))
359
360 static u32 smiapp_pixel_order(struct smiapp_sensor *sensor)
361 {
362 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
363 int flip = 0;
364
365 if (sensor->hflip) {
366 if (sensor->hflip->val)
367 flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
368
369 if (sensor->vflip->val)
370 flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
371 }
372
373 flip ^= sensor->hvflip_inv_mask;
374
375 dev_dbg(&client->dev, "flip %d\n", flip);
376 return sensor->default_pixel_order ^ flip;
377 }
378
379 static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor)
380 {
381 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
382 unsigned int csi_format_idx =
383 to_csi_format_idx(sensor->csi_format) & ~3;
384 unsigned int internal_csi_format_idx =
385 to_csi_format_idx(sensor->internal_csi_format) & ~3;
386 unsigned int pixel_order = smiapp_pixel_order(sensor);
387
388 sensor->mbus_frame_fmts =
389 sensor->default_mbus_frame_fmts << pixel_order;
390 sensor->csi_format =
391 &smiapp_csi_data_formats[csi_format_idx + pixel_order];
392 sensor->internal_csi_format =
393 &smiapp_csi_data_formats[internal_csi_format_idx
394 + pixel_order];
395
396 BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order
397 >= ARRAY_SIZE(smiapp_csi_data_formats));
398
399 dev_dbg(&client->dev, "new pixel order %s\n",
400 pixel_order_str[pixel_order]);
401 }
402
403 static const char * const smiapp_test_patterns[] = {
404 "Disabled",
405 "Solid Colour",
406 "Eight Vertical Colour Bars",
407 "Colour Bars With Fade to Grey",
408 "Pseudorandom Sequence (PN9)",
409 };
410
411 static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl)
412 {
413 struct smiapp_sensor *sensor =
414 container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler)
415 ->sensor;
416 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
417 int pm_status;
418 u32 orient = 0;
419 unsigned int i;
420 int exposure;
421 int rval;
422
423 switch (ctrl->id) {
424 case V4L2_CID_HFLIP:
425 case V4L2_CID_VFLIP:
426 if (sensor->streaming)
427 return -EBUSY;
428
429 if (sensor->hflip->val)
430 orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
431
432 if (sensor->vflip->val)
433 orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
434
435 orient ^= sensor->hvflip_inv_mask;
436
437 smiapp_update_mbus_formats(sensor);
438
439 break;
440 case V4L2_CID_VBLANK:
441 exposure = sensor->exposure->val;
442
443 __smiapp_update_exposure_limits(sensor);
444
445 if (exposure > sensor->exposure->maximum) {
446 sensor->exposure->val = sensor->exposure->maximum;
447 rval = smiapp_set_ctrl(sensor->exposure);
448 if (rval < 0)
449 return rval;
450 }
451
452 break;
453 case V4L2_CID_LINK_FREQ:
454 if (sensor->streaming)
455 return -EBUSY;
456
457 rval = smiapp_pll_update(sensor);
458 if (rval)
459 return rval;
460
461 return 0;
462 case V4L2_CID_TEST_PATTERN:
463 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
464 v4l2_ctrl_activate(
465 sensor->test_data[i],
466 ctrl->val ==
467 V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR);
468
469 break;
470 }
471
472 pm_runtime_get_noresume(&client->dev);
473 pm_status = pm_runtime_get_if_in_use(&client->dev);
474 pm_runtime_put_noidle(&client->dev);
475 if (!pm_status)
476 return 0;
477
478 switch (ctrl->id) {
479 case V4L2_CID_ANALOGUE_GAIN:
480 rval = smiapp_write(
481 sensor,
482 SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val);
483
484 break;
485 case V4L2_CID_EXPOSURE:
486 rval = smiapp_write(
487 sensor,
488 SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val);
489
490 break;
491 case V4L2_CID_HFLIP:
492 case V4L2_CID_VFLIP:
493 rval = smiapp_write(sensor, SMIAPP_REG_U8_IMAGE_ORIENTATION,
494 orient);
495
496 break;
497 case V4L2_CID_VBLANK:
498 rval = smiapp_write(
499 sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES,
500 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
501 + ctrl->val);
502
503 break;
504 case V4L2_CID_HBLANK:
505 rval = smiapp_write(
506 sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK,
507 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
508 + ctrl->val);
509
510 break;
511 case V4L2_CID_TEST_PATTERN:
512 rval = smiapp_write(
513 sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val);
514
515 break;
516 case V4L2_CID_TEST_PATTERN_RED:
517 rval = smiapp_write(
518 sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val);
519
520 break;
521 case V4L2_CID_TEST_PATTERN_GREENR:
522 rval = smiapp_write(
523 sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val);
524
525 break;
526 case V4L2_CID_TEST_PATTERN_BLUE:
527 rval = smiapp_write(
528 sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val);
529
530 break;
531 case V4L2_CID_TEST_PATTERN_GREENB:
532 rval = smiapp_write(
533 sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val);
534
535 break;
536 case V4L2_CID_PIXEL_RATE:
537 /* For v4l2_ctrl_s_ctrl_int64() used internally. */
538 rval = 0;
539
540 break;
541 default:
542 rval = -EINVAL;
543 }
544
545 if (pm_status > 0) {
546 pm_runtime_mark_last_busy(&client->dev);
547 pm_runtime_put_autosuspend(&client->dev);
548 }
549
550 return rval;
551 }
552
553 static const struct v4l2_ctrl_ops smiapp_ctrl_ops = {
554 .s_ctrl = smiapp_set_ctrl,
555 };
556
557 static int smiapp_init_controls(struct smiapp_sensor *sensor)
558 {
559 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
560 int rval;
561
562 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12);
563 if (rval)
564 return rval;
565
566 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
567
568 sensor->analog_gain = v4l2_ctrl_new_std(
569 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
570 V4L2_CID_ANALOGUE_GAIN,
571 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN],
572 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX],
573 max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U),
574 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]);
575
576 /* Exposure limits will be updated soon, use just something here. */
577 sensor->exposure = v4l2_ctrl_new_std(
578 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
579 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
580
581 sensor->hflip = v4l2_ctrl_new_std(
582 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
583 V4L2_CID_HFLIP, 0, 1, 1, 0);
584 sensor->vflip = v4l2_ctrl_new_std(
585 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
586 V4L2_CID_VFLIP, 0, 1, 1, 0);
587
588 sensor->vblank = v4l2_ctrl_new_std(
589 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
590 V4L2_CID_VBLANK, 0, 1, 1, 0);
591
592 if (sensor->vblank)
593 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
594
595 sensor->hblank = v4l2_ctrl_new_std(
596 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
597 V4L2_CID_HBLANK, 0, 1, 1, 0);
598
599 if (sensor->hblank)
600 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
601
602 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
603 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
604 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
605
606 v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler,
607 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN,
608 ARRAY_SIZE(smiapp_test_patterns) - 1,
609 0, 0, smiapp_test_patterns);
610
611 if (sensor->pixel_array->ctrl_handler.error) {
612 dev_err(&client->dev,
613 "pixel array controls initialization failed (%d)\n",
614 sensor->pixel_array->ctrl_handler.error);
615 return sensor->pixel_array->ctrl_handler.error;
616 }
617
618 sensor->pixel_array->sd.ctrl_handler =
619 &sensor->pixel_array->ctrl_handler;
620
621 v4l2_ctrl_cluster(2, &sensor->hflip);
622
623 rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0);
624 if (rval)
625 return rval;
626
627 sensor->src->ctrl_handler.lock = &sensor->mutex;
628
629 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
630 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
631 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
632
633 if (sensor->src->ctrl_handler.error) {
634 dev_err(&client->dev,
635 "src controls initialization failed (%d)\n",
636 sensor->src->ctrl_handler.error);
637 return sensor->src->ctrl_handler.error;
638 }
639
640 sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler;
641
642 return 0;
643 }
644
645 /*
646 * For controls that require information on available media bus codes
647 * and linke frequencies.
648 */
649 static int smiapp_init_late_controls(struct smiapp_sensor *sensor)
650 {
651 unsigned long *valid_link_freqs = &sensor->valid_link_freqs[
652 sensor->csi_format->compressed - sensor->compressed_min_bpp];
653 unsigned int i;
654
655 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) {
656 int max_value = (1 << sensor->csi_format->width) - 1;
657
658 sensor->test_data[i] = v4l2_ctrl_new_std(
659 &sensor->pixel_array->ctrl_handler,
660 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i,
661 0, max_value, 1, max_value);
662 }
663
664 sensor->link_freq = v4l2_ctrl_new_int_menu(
665 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
666 V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs),
667 __ffs(*valid_link_freqs), sensor->hwcfg->op_sys_clock);
668
669 return sensor->src->ctrl_handler.error;
670 }
671
672 static void smiapp_free_controls(struct smiapp_sensor *sensor)
673 {
674 unsigned int i;
675
676 for (i = 0; i < sensor->ssds_used; i++)
677 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
678 }
679
680 static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit,
681 unsigned int n)
682 {
683 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
684 unsigned int i;
685 u32 val;
686 int rval;
687
688 for (i = 0; i < n; i++) {
689 rval = smiapp_read(
690 sensor, smiapp_reg_limits[limit[i]].addr, &val);
691 if (rval)
692 return rval;
693 sensor->limits[limit[i]] = val;
694 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
695 smiapp_reg_limits[limit[i]].addr,
696 smiapp_reg_limits[limit[i]].what, val, val);
697 }
698
699 return 0;
700 }
701
702 static int smiapp_get_all_limits(struct smiapp_sensor *sensor)
703 {
704 unsigned int i;
705 int rval;
706
707 for (i = 0; i < SMIAPP_LIMIT_LAST; i++) {
708 rval = smiapp_get_limits(sensor, &i, 1);
709 if (rval < 0)
710 return rval;
711 }
712
713 if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0)
714 smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16);
715
716 return 0;
717 }
718
719 static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor)
720 {
721 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
722 struct smiapp_pll *pll = &sensor->pll;
723 u8 compressed_max_bpp = 0;
724 unsigned int type, n;
725 unsigned int i, pixel_order;
726 int rval;
727
728 rval = smiapp_read(
729 sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type);
730 if (rval)
731 return rval;
732
733 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
734
735 rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER,
736 &pixel_order);
737 if (rval)
738 return rval;
739
740 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
741 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
742 return -EINVAL;
743 }
744
745 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
746 pixel_order_str[pixel_order]);
747
748 switch (type) {
749 case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL:
750 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
751 break;
752 case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED:
753 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N;
754 break;
755 default:
756 return -EINVAL;
757 }
758
759 sensor->default_pixel_order = pixel_order;
760 sensor->mbus_frame_fmts = 0;
761
762 for (i = 0; i < n; i++) {
763 unsigned int fmt, j;
764
765 rval = smiapp_read(
766 sensor,
767 SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt);
768 if (rval)
769 return rval;
770
771 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
772 i, fmt >> 8, (u8)fmt);
773
774 for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) {
775 const struct smiapp_csi_data_format *f =
776 &smiapp_csi_data_formats[j];
777
778 if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG)
779 continue;
780
781 if (f->width != fmt >> 8 || f->compressed != (u8)fmt)
782 continue;
783
784 dev_dbg(&client->dev, "jolly good! %d\n", j);
785
786 sensor->default_mbus_frame_fmts |= 1 << j;
787 }
788 }
789
790 /* Figure out which BPP values can be used with which formats. */
791 pll->binning_horizontal = 1;
792 pll->binning_vertical = 1;
793 pll->scale_m = sensor->scale_m;
794
795 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
796 sensor->compressed_min_bpp =
797 min(smiapp_csi_data_formats[i].compressed,
798 sensor->compressed_min_bpp);
799 compressed_max_bpp =
800 max(smiapp_csi_data_formats[i].compressed,
801 compressed_max_bpp);
802 }
803
804 sensor->valid_link_freqs = devm_kcalloc(
805 &client->dev,
806 compressed_max_bpp - sensor->compressed_min_bpp + 1,
807 sizeof(*sensor->valid_link_freqs), GFP_KERNEL);
808 if (!sensor->valid_link_freqs)
809 return -ENOMEM;
810
811 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
812 const struct smiapp_csi_data_format *f =
813 &smiapp_csi_data_formats[i];
814 unsigned long *valid_link_freqs =
815 &sensor->valid_link_freqs[
816 f->compressed - sensor->compressed_min_bpp];
817 unsigned int j;
818
819 if (!(sensor->default_mbus_frame_fmts & 1 << i))
820 continue;
821
822 pll->bits_per_pixel = f->compressed;
823
824 for (j = 0; sensor->hwcfg->op_sys_clock[j]; j++) {
825 pll->link_freq = sensor->hwcfg->op_sys_clock[j];
826
827 rval = smiapp_pll_try(sensor, pll);
828 dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n",
829 pll->link_freq, pll->bits_per_pixel,
830 rval ? "not ok" : "ok");
831 if (rval)
832 continue;
833
834 set_bit(j, valid_link_freqs);
835 }
836
837 if (!*valid_link_freqs) {
838 dev_info(&client->dev,
839 "no valid link frequencies for %u bpp\n",
840 f->compressed);
841 sensor->default_mbus_frame_fmts &= ~BIT(i);
842 continue;
843 }
844
845 if (!sensor->csi_format
846 || f->width > sensor->csi_format->width
847 || (f->width == sensor->csi_format->width
848 && f->compressed > sensor->csi_format->compressed)) {
849 sensor->csi_format = f;
850 sensor->internal_csi_format = f;
851 }
852 }
853
854 if (!sensor->csi_format) {
855 dev_err(&client->dev, "no supported mbus code found\n");
856 return -EINVAL;
857 }
858
859 smiapp_update_mbus_formats(sensor);
860
861 return 0;
862 }
863
864 static void smiapp_update_blanking(struct smiapp_sensor *sensor)
865 {
866 struct v4l2_ctrl *vblank = sensor->vblank;
867 struct v4l2_ctrl *hblank = sensor->hblank;
868 uint16_t min_fll, max_fll, min_llp, max_llp, min_lbp;
869 int min, max;
870
871 if (sensor->binning_vertical > 1 || sensor->binning_horizontal > 1) {
872 min_fll = sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN];
873 max_fll = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN];
874 min_llp = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN];
875 max_llp = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN];
876 min_lbp = sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN];
877 } else {
878 min_fll = sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES];
879 max_fll = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES];
880 min_llp = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK];
881 max_llp = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK];
882 min_lbp = sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK];
883 }
884
885 min = max_t(int,
886 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES],
887 min_fll -
888 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height);
889 max = max_fll - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
890
891 __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min);
892
893 min = max_t(int,
894 min_llp -
895 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width,
896 min_lbp);
897 max = max_llp - sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
898
899 __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min);
900
901 __smiapp_update_exposure_limits(sensor);
902 }
903
904 static int smiapp_pll_blanking_update(struct smiapp_sensor *sensor)
905 {
906 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
907 int rval;
908
909 rval = smiapp_pll_update(sensor);
910 if (rval < 0)
911 return rval;
912
913 /* Output from pixel array, including blanking */
914 smiapp_update_blanking(sensor);
915
916 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
917 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
918
919 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
920 sensor->pll.pixel_rate_pixel_array /
921 ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
922 + sensor->hblank->val) *
923 (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
924 + sensor->vblank->val) / 100));
925
926 return 0;
927 }
928
929 /*
930 *
931 * SMIA++ NVM handling
932 *
933 */
934
935 static int smiapp_read_nvm_page(struct smiapp_sensor *sensor, u32 p, u8 *nvm,
936 u8 *status)
937 {
938 unsigned int i;
939 int rval;
940 u32 s;
941
942 *status = 0;
943
944 rval = smiapp_write(sensor,
945 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p);
946 if (rval)
947 return rval;
948
949 rval = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL,
950 SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN);
951 if (rval)
952 return rval;
953
954 rval = smiapp_read(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS,
955 &s);
956 if (rval)
957 return rval;
958
959 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_EUSAGE) {
960 *status = s;
961 return -ENODATA;
962 }
963
964 if (sensor->limits[SMIAPP_LIMIT_DATA_TRANSFER_IF_CAPABILITY] &
965 SMIAPP_DATA_TRANSFER_IF_CAPABILITY_POLL) {
966 for (i = 1000; i > 0; i--) {
967 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
968 break;
969
970 rval = smiapp_read(
971 sensor,
972 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS,
973 &s);
974
975 if (rval)
976 return rval;
977 }
978
979 if (!i)
980 return -ETIMEDOUT;
981 }
982
983 for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
984 u32 v;
985
986 rval = smiapp_read(sensor,
987 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i,
988 &v);
989 if (rval)
990 return rval;
991
992 *nvm++ = v;
993 }
994
995 return 0;
996 }
997
998 static int smiapp_read_nvm(struct smiapp_sensor *sensor, unsigned char *nvm,
999 size_t nvm_size)
1000 {
1001 u8 status = 0;
1002 u32 p;
1003 int rval = 0, rval2;
1004
1005 for (p = 0; p < nvm_size / SMIAPP_NVM_PAGE_SIZE && !rval; p++) {
1006 rval = smiapp_read_nvm_page(sensor, p, nvm, &status);
1007 nvm += SMIAPP_NVM_PAGE_SIZE;
1008 }
1009
1010 if (rval == -ENODATA &&
1011 status & SMIAPP_DATA_TRANSFER_IF_1_STATUS_EUSAGE)
1012 rval = 0;
1013
1014 rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0);
1015 if (rval < 0)
1016 return rval;
1017 else
1018 return rval2 ?: p * SMIAPP_NVM_PAGE_SIZE;
1019 }
1020
1021 /*
1022 *
1023 * SMIA++ CCI address control
1024 *
1025 */
1026 static int smiapp_change_cci_addr(struct smiapp_sensor *sensor)
1027 {
1028 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1029 int rval;
1030 u32 val;
1031
1032 client->addr = sensor->hwcfg->i2c_addr_dfl;
1033
1034 rval = smiapp_write(sensor,
1035 SMIAPP_REG_U8_CCI_ADDRESS_CONTROL,
1036 sensor->hwcfg->i2c_addr_alt << 1);
1037 if (rval)
1038 return rval;
1039
1040 client->addr = sensor->hwcfg->i2c_addr_alt;
1041
1042 /* verify addr change went ok */
1043 rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val);
1044 if (rval)
1045 return rval;
1046
1047 if (val != sensor->hwcfg->i2c_addr_alt << 1)
1048 return -ENODEV;
1049
1050 return 0;
1051 }
1052
1053 /*
1054 *
1055 * SMIA++ Mode Control
1056 *
1057 */
1058 static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor)
1059 {
1060 struct smiapp_flash_strobe_parms *strobe_setup;
1061 unsigned int ext_freq = sensor->hwcfg->ext_clk;
1062 u32 tmp;
1063 u32 strobe_adjustment;
1064 u32 strobe_width_high_rs;
1065 int rval;
1066
1067 strobe_setup = sensor->hwcfg->strobe_setup;
1068
1069 /*
1070 * How to calculate registers related to strobe length. Please
1071 * do not change, or if you do at least know what you're
1072 * doing. :-)
1073 *
1074 * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25
1075 *
1076 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
1077 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
1078 *
1079 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
1080 * flash_strobe_adjustment E N, [1 - 0xff]
1081 *
1082 * The formula above is written as below to keep it on one
1083 * line:
1084 *
1085 * l / 10^6 = w / e * a
1086 *
1087 * Let's mark w * a by x:
1088 *
1089 * x = w * a
1090 *
1091 * Thus, we get:
1092 *
1093 * x = l * e / 10^6
1094 *
1095 * The strobe width must be at least as long as requested,
1096 * thus rounding upwards is needed.
1097 *
1098 * x = (l * e + 10^6 - 1) / 10^6
1099 * -----------------------------
1100 *
1101 * Maximum possible accuracy is wanted at all times. Thus keep
1102 * a as small as possible.
1103 *
1104 * Calculate a, assuming maximum w, with rounding upwards:
1105 *
1106 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1107 * -------------------------------------
1108 *
1109 * Thus, we also get w, with that a, with rounding upwards:
1110 *
1111 * w = (x + a - 1) / a
1112 * -------------------
1113 *
1114 * To get limits:
1115 *
1116 * x E [1, (2^16 - 1) * (2^8 - 1)]
1117 *
1118 * Substituting maximum x to the original formula (with rounding),
1119 * the maximum l is thus
1120 *
1121 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1122 *
1123 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1124 * --------------------------------------------------
1125 *
1126 * flash_strobe_length must be clamped between 1 and
1127 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1128 *
1129 * Then,
1130 *
1131 * flash_strobe_adjustment = ((flash_strobe_length *
1132 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1133 *
1134 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1135 * EXTCLK freq + 10^6 - 1) / 10^6 +
1136 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1137 */
1138 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1139 1000000 + 1, ext_freq);
1140 strobe_setup->strobe_width_high_us =
1141 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1142
1143 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1144 1000000 - 1), 1000000ULL);
1145 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1146 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1147 strobe_adjustment;
1148
1149 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS,
1150 strobe_setup->mode);
1151 if (rval < 0)
1152 goto out;
1153
1154 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT,
1155 strobe_adjustment);
1156 if (rval < 0)
1157 goto out;
1158
1159 rval = smiapp_write(
1160 sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
1161 strobe_width_high_rs);
1162 if (rval < 0)
1163 goto out;
1164
1165 rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL,
1166 strobe_setup->strobe_delay);
1167 if (rval < 0)
1168 goto out;
1169
1170 rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT,
1171 strobe_setup->stobe_start_point);
1172 if (rval < 0)
1173 goto out;
1174
1175 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS,
1176 strobe_setup->trigger);
1177
1178 out:
1179 sensor->hwcfg->strobe_setup->trigger = 0;
1180
1181 return rval;
1182 }
1183
1184 /* -----------------------------------------------------------------------------
1185 * Power management
1186 */
1187
1188 static int smiapp_power_on(struct device *dev)
1189 {
1190 struct i2c_client *client = to_i2c_client(dev);
1191 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1192 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1193 /*
1194 * The sub-device related to the I2C device is always the
1195 * source one, i.e. ssds[0].
1196 */
1197 struct smiapp_sensor *sensor =
1198 container_of(ssd, struct smiapp_sensor, ssds[0]);
1199 unsigned int sleep;
1200 int rval;
1201
1202 rval = regulator_enable(sensor->vana);
1203 if (rval) {
1204 dev_err(&client->dev, "failed to enable vana regulator\n");
1205 return rval;
1206 }
1207 usleep_range(1000, 1000);
1208
1209 rval = clk_prepare_enable(sensor->ext_clk);
1210 if (rval < 0) {
1211 dev_dbg(&client->dev, "failed to enable xclk\n");
1212 goto out_xclk_fail;
1213 }
1214 usleep_range(1000, 1000);
1215
1216 gpiod_set_value(sensor->xshutdown, 1);
1217
1218 sleep = SMIAPP_RESET_DELAY(sensor->hwcfg->ext_clk);
1219 usleep_range(sleep, sleep);
1220
1221 /*
1222 * Failures to respond to the address change command have been noticed.
1223 * Those failures seem to be caused by the sensor requiring a longer
1224 * boot time than advertised. An additional 10ms delay seems to work
1225 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1226 * unnecessary. The failures need to be investigated to find a proper
1227 * fix, and a delay will likely need to be added here if the I2C write
1228 * retry hack is reverted before the root cause of the boot time issue
1229 * is found.
1230 */
1231
1232 if (sensor->hwcfg->i2c_addr_alt) {
1233 rval = smiapp_change_cci_addr(sensor);
1234 if (rval) {
1235 dev_err(&client->dev, "cci address change error\n");
1236 goto out_cci_addr_fail;
1237 }
1238 }
1239
1240 rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
1241 SMIAPP_SOFTWARE_RESET);
1242 if (rval < 0) {
1243 dev_err(&client->dev, "software reset failed\n");
1244 goto out_cci_addr_fail;
1245 }
1246
1247 if (sensor->hwcfg->i2c_addr_alt) {
1248 rval = smiapp_change_cci_addr(sensor);
1249 if (rval) {
1250 dev_err(&client->dev, "cci address change error\n");
1251 goto out_cci_addr_fail;
1252 }
1253 }
1254
1255 rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
1256 SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
1257 if (rval) {
1258 dev_err(&client->dev, "compression mode set failed\n");
1259 goto out_cci_addr_fail;
1260 }
1261
1262 rval = smiapp_write(
1263 sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
1264 sensor->hwcfg->ext_clk / (1000000 / (1 << 8)));
1265 if (rval) {
1266 dev_err(&client->dev, "extclk frequency set failed\n");
1267 goto out_cci_addr_fail;
1268 }
1269
1270 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
1271 sensor->hwcfg->lanes - 1);
1272 if (rval) {
1273 dev_err(&client->dev, "csi lane mode set failed\n");
1274 goto out_cci_addr_fail;
1275 }
1276
1277 rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
1278 SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
1279 if (rval) {
1280 dev_err(&client->dev, "fast standby set failed\n");
1281 goto out_cci_addr_fail;
1282 }
1283
1284 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
1285 sensor->hwcfg->csi_signalling_mode);
1286 if (rval) {
1287 dev_err(&client->dev, "csi signalling mode set failed\n");
1288 goto out_cci_addr_fail;
1289 }
1290
1291 /* DPHY control done by sensor based on requested link rate */
1292 rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
1293 SMIAPP_DPHY_CTRL_UI);
1294 if (rval < 0)
1295 goto out_cci_addr_fail;
1296
1297 rval = smiapp_call_quirk(sensor, post_poweron);
1298 if (rval) {
1299 dev_err(&client->dev, "post_poweron quirks failed\n");
1300 goto out_cci_addr_fail;
1301 }
1302
1303 return 0;
1304
1305 out_cci_addr_fail:
1306 gpiod_set_value(sensor->xshutdown, 0);
1307 clk_disable_unprepare(sensor->ext_clk);
1308
1309 out_xclk_fail:
1310 regulator_disable(sensor->vana);
1311
1312 return rval;
1313 }
1314
1315 static int smiapp_power_off(struct device *dev)
1316 {
1317 struct i2c_client *client = to_i2c_client(dev);
1318 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1319 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1320 struct smiapp_sensor *sensor =
1321 container_of(ssd, struct smiapp_sensor, ssds[0]);
1322
1323 /*
1324 * Currently power/clock to lens are enable/disabled separately
1325 * but they are essentially the same signals. So if the sensor is
1326 * powered off while the lens is powered on the sensor does not
1327 * really see a power off and next time the cci address change
1328 * will fail. So do a soft reset explicitly here.
1329 */
1330 if (sensor->hwcfg->i2c_addr_alt)
1331 smiapp_write(sensor,
1332 SMIAPP_REG_U8_SOFTWARE_RESET,
1333 SMIAPP_SOFTWARE_RESET);
1334
1335 gpiod_set_value(sensor->xshutdown, 0);
1336 clk_disable_unprepare(sensor->ext_clk);
1337 usleep_range(5000, 5000);
1338 regulator_disable(sensor->vana);
1339 sensor->streaming = false;
1340
1341 return 0;
1342 }
1343
1344 /* -----------------------------------------------------------------------------
1345 * Video stream management
1346 */
1347
1348 static int smiapp_start_streaming(struct smiapp_sensor *sensor)
1349 {
1350 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1351 unsigned int binning_mode;
1352 int rval;
1353
1354 mutex_lock(&sensor->mutex);
1355
1356 rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT,
1357 (sensor->csi_format->width << 8) |
1358 sensor->csi_format->compressed);
1359 if (rval)
1360 goto out;
1361
1362 /* Binning configuration */
1363 if (sensor->binning_horizontal == 1 &&
1364 sensor->binning_vertical == 1) {
1365 binning_mode = 0;
1366 } else {
1367 u8 binning_type =
1368 (sensor->binning_horizontal << 4)
1369 | sensor->binning_vertical;
1370
1371 rval = smiapp_write(
1372 sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type);
1373 if (rval < 0)
1374 goto out;
1375
1376 binning_mode = 1;
1377 }
1378 rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode);
1379 if (rval < 0)
1380 goto out;
1381
1382 /* Set up PLL */
1383 rval = smiapp_pll_configure(sensor);
1384 if (rval)
1385 goto out;
1386
1387 /* Analog crop start coordinates */
1388 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START,
1389 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left);
1390 if (rval < 0)
1391 goto out;
1392
1393 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START,
1394 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top);
1395 if (rval < 0)
1396 goto out;
1397
1398 /* Analog crop end coordinates */
1399 rval = smiapp_write(
1400 sensor, SMIAPP_REG_U16_X_ADDR_END,
1401 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left
1402 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1);
1403 if (rval < 0)
1404 goto out;
1405
1406 rval = smiapp_write(
1407 sensor, SMIAPP_REG_U16_Y_ADDR_END,
1408 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top
1409 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1);
1410 if (rval < 0)
1411 goto out;
1412
1413 /*
1414 * Output from pixel array, including blanking, is set using
1415 * controls below. No need to set here.
1416 */
1417
1418 /* Digital crop */
1419 if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1420 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1421 rval = smiapp_write(
1422 sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET,
1423 sensor->scaler->crop[SMIAPP_PAD_SINK].left);
1424 if (rval < 0)
1425 goto out;
1426
1427 rval = smiapp_write(
1428 sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET,
1429 sensor->scaler->crop[SMIAPP_PAD_SINK].top);
1430 if (rval < 0)
1431 goto out;
1432
1433 rval = smiapp_write(
1434 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH,
1435 sensor->scaler->crop[SMIAPP_PAD_SINK].width);
1436 if (rval < 0)
1437 goto out;
1438
1439 rval = smiapp_write(
1440 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT,
1441 sensor->scaler->crop[SMIAPP_PAD_SINK].height);
1442 if (rval < 0)
1443 goto out;
1444 }
1445
1446 /* Scaling */
1447 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1448 != SMIAPP_SCALING_CAPABILITY_NONE) {
1449 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE,
1450 sensor->scaling_mode);
1451 if (rval < 0)
1452 goto out;
1453
1454 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M,
1455 sensor->scale_m);
1456 if (rval < 0)
1457 goto out;
1458 }
1459
1460 /* Output size from sensor */
1461 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE,
1462 sensor->src->crop[SMIAPP_PAD_SRC].width);
1463 if (rval < 0)
1464 goto out;
1465 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE,
1466 sensor->src->crop[SMIAPP_PAD_SRC].height);
1467 if (rval < 0)
1468 goto out;
1469
1470 if ((sensor->limits[SMIAPP_LIMIT_FLASH_MODE_CAPABILITY] &
1471 (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1472 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) &&
1473 sensor->hwcfg->strobe_setup != NULL &&
1474 sensor->hwcfg->strobe_setup->trigger != 0) {
1475 rval = smiapp_setup_flash_strobe(sensor);
1476 if (rval)
1477 goto out;
1478 }
1479
1480 rval = smiapp_call_quirk(sensor, pre_streamon);
1481 if (rval) {
1482 dev_err(&client->dev, "pre_streamon quirks failed\n");
1483 goto out;
1484 }
1485
1486 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
1487 SMIAPP_MODE_SELECT_STREAMING);
1488
1489 out:
1490 mutex_unlock(&sensor->mutex);
1491
1492 return rval;
1493 }
1494
1495 static int smiapp_stop_streaming(struct smiapp_sensor *sensor)
1496 {
1497 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1498 int rval;
1499
1500 mutex_lock(&sensor->mutex);
1501 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
1502 SMIAPP_MODE_SELECT_SOFTWARE_STANDBY);
1503 if (rval)
1504 goto out;
1505
1506 rval = smiapp_call_quirk(sensor, post_streamoff);
1507 if (rval)
1508 dev_err(&client->dev, "post_streamoff quirks failed\n");
1509
1510 out:
1511 mutex_unlock(&sensor->mutex);
1512 return rval;
1513 }
1514
1515 /* -----------------------------------------------------------------------------
1516 * V4L2 subdev video operations
1517 */
1518
1519 static int smiapp_pm_get_init(struct smiapp_sensor *sensor)
1520 {
1521 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1522 int rval;
1523
1524 rval = pm_runtime_get_sync(&client->dev);
1525 if (rval < 0) {
1526 if (rval != -EBUSY && rval != -EAGAIN)
1527 pm_runtime_set_active(&client->dev);
1528 pm_runtime_put_noidle(&client->dev);
1529
1530 return rval;
1531 } else if (!rval) {
1532 rval = v4l2_ctrl_handler_setup(&sensor->pixel_array->
1533 ctrl_handler);
1534 if (rval)
1535 return rval;
1536
1537 return v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1538 }
1539
1540 return 0;
1541 }
1542
1543 static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
1544 {
1545 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1546 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1547 int rval;
1548
1549 if (sensor->streaming == enable)
1550 return 0;
1551
1552 if (!enable) {
1553 smiapp_stop_streaming(sensor);
1554 sensor->streaming = false;
1555 pm_runtime_mark_last_busy(&client->dev);
1556 pm_runtime_put_autosuspend(&client->dev);
1557
1558 return 0;
1559 }
1560
1561 rval = smiapp_pm_get_init(sensor);
1562 if (rval)
1563 return rval;
1564
1565 sensor->streaming = true;
1566
1567 rval = smiapp_start_streaming(sensor);
1568 if (rval < 0) {
1569 sensor->streaming = false;
1570 pm_runtime_mark_last_busy(&client->dev);
1571 pm_runtime_put_autosuspend(&client->dev);
1572 }
1573
1574 return rval;
1575 }
1576
1577 static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev,
1578 struct v4l2_subdev_pad_config *cfg,
1579 struct v4l2_subdev_mbus_code_enum *code)
1580 {
1581 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1582 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1583 unsigned int i;
1584 int idx = -1;
1585 int rval = -EINVAL;
1586
1587 mutex_lock(&sensor->mutex);
1588
1589 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1590 subdev->name, code->pad, code->index);
1591
1592 if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) {
1593 if (code->index)
1594 goto out;
1595
1596 code->code = sensor->internal_csi_format->code;
1597 rval = 0;
1598 goto out;
1599 }
1600
1601 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1602 if (sensor->mbus_frame_fmts & (1 << i))
1603 idx++;
1604
1605 if (idx == code->index) {
1606 code->code = smiapp_csi_data_formats[i].code;
1607 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1608 code->index, i, code->code);
1609 rval = 0;
1610 break;
1611 }
1612 }
1613
1614 out:
1615 mutex_unlock(&sensor->mutex);
1616
1617 return rval;
1618 }
1619
1620 static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev,
1621 unsigned int pad)
1622 {
1623 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1624
1625 if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC)
1626 return sensor->csi_format->code;
1627 else
1628 return sensor->internal_csi_format->code;
1629 }
1630
1631 static int __smiapp_get_format(struct v4l2_subdev *subdev,
1632 struct v4l2_subdev_pad_config *cfg,
1633 struct v4l2_subdev_format *fmt)
1634 {
1635 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1636
1637 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1638 fmt->format = *v4l2_subdev_get_try_format(subdev, cfg,
1639 fmt->pad);
1640 } else {
1641 struct v4l2_rect *r;
1642
1643 if (fmt->pad == ssd->source_pad)
1644 r = &ssd->crop[ssd->source_pad];
1645 else
1646 r = &ssd->sink_fmt;
1647
1648 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1649 fmt->format.width = r->width;
1650 fmt->format.height = r->height;
1651 fmt->format.field = V4L2_FIELD_NONE;
1652 }
1653
1654 return 0;
1655 }
1656
1657 static int smiapp_get_format(struct v4l2_subdev *subdev,
1658 struct v4l2_subdev_pad_config *cfg,
1659 struct v4l2_subdev_format *fmt)
1660 {
1661 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1662 int rval;
1663
1664 mutex_lock(&sensor->mutex);
1665 rval = __smiapp_get_format(subdev, cfg, fmt);
1666 mutex_unlock(&sensor->mutex);
1667
1668 return rval;
1669 }
1670
1671 static void smiapp_get_crop_compose(struct v4l2_subdev *subdev,
1672 struct v4l2_subdev_pad_config *cfg,
1673 struct v4l2_rect **crops,
1674 struct v4l2_rect **comps, int which)
1675 {
1676 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1677 unsigned int i;
1678
1679 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1680 if (crops)
1681 for (i = 0; i < subdev->entity.num_pads; i++)
1682 crops[i] = &ssd->crop[i];
1683 if (comps)
1684 *comps = &ssd->compose;
1685 } else {
1686 if (crops) {
1687 for (i = 0; i < subdev->entity.num_pads; i++) {
1688 crops[i] = v4l2_subdev_get_try_crop(subdev, cfg, i);
1689 BUG_ON(!crops[i]);
1690 }
1691 }
1692 if (comps) {
1693 *comps = v4l2_subdev_get_try_compose(subdev, cfg,
1694 SMIAPP_PAD_SINK);
1695 BUG_ON(!*comps);
1696 }
1697 }
1698 }
1699
1700 /* Changes require propagation only on sink pad. */
1701 static void smiapp_propagate(struct v4l2_subdev *subdev,
1702 struct v4l2_subdev_pad_config *cfg, int which,
1703 int target)
1704 {
1705 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1706 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1707 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1708
1709 smiapp_get_crop_compose(subdev, cfg, crops, &comp, which);
1710
1711 switch (target) {
1712 case V4L2_SEL_TGT_CROP:
1713 comp->width = crops[SMIAPP_PAD_SINK]->width;
1714 comp->height = crops[SMIAPP_PAD_SINK]->height;
1715 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1716 if (ssd == sensor->scaler) {
1717 sensor->scale_m =
1718 sensor->limits[
1719 SMIAPP_LIMIT_SCALER_N_MIN];
1720 sensor->scaling_mode =
1721 SMIAPP_SCALING_MODE_NONE;
1722 } else if (ssd == sensor->binner) {
1723 sensor->binning_horizontal = 1;
1724 sensor->binning_vertical = 1;
1725 }
1726 }
1727 /* Fall through */
1728 case V4L2_SEL_TGT_COMPOSE:
1729 *crops[SMIAPP_PAD_SRC] = *comp;
1730 break;
1731 default:
1732 BUG();
1733 }
1734 }
1735
1736 static const struct smiapp_csi_data_format
1737 *smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code)
1738 {
1739 unsigned int i;
1740
1741 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1742 if (sensor->mbus_frame_fmts & (1 << i)
1743 && smiapp_csi_data_formats[i].code == code)
1744 return &smiapp_csi_data_formats[i];
1745 }
1746
1747 return sensor->csi_format;
1748 }
1749
1750 static int smiapp_set_format_source(struct v4l2_subdev *subdev,
1751 struct v4l2_subdev_pad_config *cfg,
1752 struct v4l2_subdev_format *fmt)
1753 {
1754 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1755 const struct smiapp_csi_data_format *csi_format,
1756 *old_csi_format = sensor->csi_format;
1757 unsigned long *valid_link_freqs;
1758 u32 code = fmt->format.code;
1759 unsigned int i;
1760 int rval;
1761
1762 rval = __smiapp_get_format(subdev, cfg, fmt);
1763 if (rval)
1764 return rval;
1765
1766 /*
1767 * Media bus code is changeable on src subdev's source pad. On
1768 * other source pads we just get format here.
1769 */
1770 if (subdev != &sensor->src->sd)
1771 return 0;
1772
1773 csi_format = smiapp_validate_csi_data_format(sensor, code);
1774
1775 fmt->format.code = csi_format->code;
1776
1777 if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1778 return 0;
1779
1780 sensor->csi_format = csi_format;
1781
1782 if (csi_format->width != old_csi_format->width)
1783 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
1784 __v4l2_ctrl_modify_range(
1785 sensor->test_data[i], 0,
1786 (1 << csi_format->width) - 1, 1, 0);
1787
1788 if (csi_format->compressed == old_csi_format->compressed)
1789 return 0;
1790
1791 valid_link_freqs =
1792 &sensor->valid_link_freqs[sensor->csi_format->compressed
1793 - sensor->compressed_min_bpp];
1794
1795 __v4l2_ctrl_modify_range(
1796 sensor->link_freq, 0,
1797 __fls(*valid_link_freqs), ~*valid_link_freqs,
1798 __ffs(*valid_link_freqs));
1799
1800 return smiapp_pll_update(sensor);
1801 }
1802
1803 static int smiapp_set_format(struct v4l2_subdev *subdev,
1804 struct v4l2_subdev_pad_config *cfg,
1805 struct v4l2_subdev_format *fmt)
1806 {
1807 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1808 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1809 struct v4l2_rect *crops[SMIAPP_PADS];
1810
1811 mutex_lock(&sensor->mutex);
1812
1813 if (fmt->pad == ssd->source_pad) {
1814 int rval;
1815
1816 rval = smiapp_set_format_source(subdev, cfg, fmt);
1817
1818 mutex_unlock(&sensor->mutex);
1819
1820 return rval;
1821 }
1822
1823 /* Sink pad. Width and height are changeable here. */
1824 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1825 fmt->format.width &= ~1;
1826 fmt->format.height &= ~1;
1827 fmt->format.field = V4L2_FIELD_NONE;
1828
1829 fmt->format.width =
1830 clamp(fmt->format.width,
1831 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
1832 sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]);
1833 fmt->format.height =
1834 clamp(fmt->format.height,
1835 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
1836 sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]);
1837
1838 smiapp_get_crop_compose(subdev, cfg, crops, NULL, fmt->which);
1839
1840 crops[ssd->sink_pad]->left = 0;
1841 crops[ssd->sink_pad]->top = 0;
1842 crops[ssd->sink_pad]->width = fmt->format.width;
1843 crops[ssd->sink_pad]->height = fmt->format.height;
1844 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1845 ssd->sink_fmt = *crops[ssd->sink_pad];
1846 smiapp_propagate(subdev, cfg, fmt->which,
1847 V4L2_SEL_TGT_CROP);
1848
1849 mutex_unlock(&sensor->mutex);
1850
1851 return 0;
1852 }
1853
1854 /*
1855 * Calculate goodness of scaled image size compared to expected image
1856 * size and flags provided.
1857 */
1858 #define SCALING_GOODNESS 100000
1859 #define SCALING_GOODNESS_EXTREME 100000000
1860 static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
1861 int h, int ask_h, u32 flags)
1862 {
1863 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1864 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1865 int val = 0;
1866
1867 w &= ~1;
1868 ask_w &= ~1;
1869 h &= ~1;
1870 ask_h &= ~1;
1871
1872 if (flags & V4L2_SEL_FLAG_GE) {
1873 if (w < ask_w)
1874 val -= SCALING_GOODNESS;
1875 if (h < ask_h)
1876 val -= SCALING_GOODNESS;
1877 }
1878
1879 if (flags & V4L2_SEL_FLAG_LE) {
1880 if (w > ask_w)
1881 val -= SCALING_GOODNESS;
1882 if (h > ask_h)
1883 val -= SCALING_GOODNESS;
1884 }
1885
1886 val -= abs(w - ask_w);
1887 val -= abs(h - ask_h);
1888
1889 if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE])
1890 val -= SCALING_GOODNESS_EXTREME;
1891
1892 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
1893 w, ask_w, h, ask_h, val);
1894
1895 return val;
1896 }
1897
1898 static void smiapp_set_compose_binner(struct v4l2_subdev *subdev,
1899 struct v4l2_subdev_pad_config *cfg,
1900 struct v4l2_subdev_selection *sel,
1901 struct v4l2_rect **crops,
1902 struct v4l2_rect *comp)
1903 {
1904 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1905 unsigned int i;
1906 unsigned int binh = 1, binv = 1;
1907 int best = scaling_goodness(
1908 subdev,
1909 crops[SMIAPP_PAD_SINK]->width, sel->r.width,
1910 crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags);
1911
1912 for (i = 0; i < sensor->nbinning_subtypes; i++) {
1913 int this = scaling_goodness(
1914 subdev,
1915 crops[SMIAPP_PAD_SINK]->width
1916 / sensor->binning_subtypes[i].horizontal,
1917 sel->r.width,
1918 crops[SMIAPP_PAD_SINK]->height
1919 / sensor->binning_subtypes[i].vertical,
1920 sel->r.height, sel->flags);
1921
1922 if (this > best) {
1923 binh = sensor->binning_subtypes[i].horizontal;
1924 binv = sensor->binning_subtypes[i].vertical;
1925 best = this;
1926 }
1927 }
1928 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1929 sensor->binning_vertical = binv;
1930 sensor->binning_horizontal = binh;
1931 }
1932
1933 sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1;
1934 sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1;
1935 }
1936
1937 /*
1938 * Calculate best scaling ratio and mode for given output resolution.
1939 *
1940 * Try all of these: horizontal ratio, vertical ratio and smallest
1941 * size possible (horizontally).
1942 *
1943 * Also try whether horizontal scaler or full scaler gives a better
1944 * result.
1945 */
1946 static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev,
1947 struct v4l2_subdev_pad_config *cfg,
1948 struct v4l2_subdev_selection *sel,
1949 struct v4l2_rect **crops,
1950 struct v4l2_rect *comp)
1951 {
1952 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1953 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1954 u32 min, max, a, b, max_m;
1955 u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
1956 int mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1957 u32 try[4];
1958 u32 ntry = 0;
1959 unsigned int i;
1960 int best = INT_MIN;
1961
1962 sel->r.width = min_t(unsigned int, sel->r.width,
1963 crops[SMIAPP_PAD_SINK]->width);
1964 sel->r.height = min_t(unsigned int, sel->r.height,
1965 crops[SMIAPP_PAD_SINK]->height);
1966
1967 a = crops[SMIAPP_PAD_SINK]->width
1968 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width;
1969 b = crops[SMIAPP_PAD_SINK]->height
1970 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height;
1971 max_m = crops[SMIAPP_PAD_SINK]->width
1972 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]
1973 / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE];
1974
1975 a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1976 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1977 b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1978 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1979 max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1980 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1981
1982 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
1983
1984 min = min(max_m, min(a, b));
1985 max = min(max_m, max(a, b));
1986
1987 try[ntry] = min;
1988 ntry++;
1989 if (min != max) {
1990 try[ntry] = max;
1991 ntry++;
1992 }
1993 if (max != max_m) {
1994 try[ntry] = min + 1;
1995 ntry++;
1996 if (min != max) {
1997 try[ntry] = max + 1;
1998 ntry++;
1999 }
2000 }
2001
2002 for (i = 0; i < ntry; i++) {
2003 int this = scaling_goodness(
2004 subdev,
2005 crops[SMIAPP_PAD_SINK]->width
2006 / try[i]
2007 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2008 sel->r.width,
2009 crops[SMIAPP_PAD_SINK]->height,
2010 sel->r.height,
2011 sel->flags);
2012
2013 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
2014
2015 if (this > best) {
2016 scale_m = try[i];
2017 mode = SMIAPP_SCALING_MODE_HORIZONTAL;
2018 best = this;
2019 }
2020
2021 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2022 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2023 continue;
2024
2025 this = scaling_goodness(
2026 subdev, crops[SMIAPP_PAD_SINK]->width
2027 / try[i]
2028 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2029 sel->r.width,
2030 crops[SMIAPP_PAD_SINK]->height
2031 / try[i]
2032 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2033 sel->r.height,
2034 sel->flags);
2035
2036 if (this > best) {
2037 scale_m = try[i];
2038 mode = SMIAPP_SCALING_MODE_BOTH;
2039 best = this;
2040 }
2041 }
2042
2043 sel->r.width =
2044 (crops[SMIAPP_PAD_SINK]->width
2045 / scale_m
2046 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1;
2047 if (mode == SMIAPP_SCALING_MODE_BOTH)
2048 sel->r.height =
2049 (crops[SMIAPP_PAD_SINK]->height
2050 / scale_m
2051 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN])
2052 & ~1;
2053 else
2054 sel->r.height = crops[SMIAPP_PAD_SINK]->height;
2055
2056 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2057 sensor->scale_m = scale_m;
2058 sensor->scaling_mode = mode;
2059 }
2060 }
2061 /* We're only called on source pads. This function sets scaling. */
2062 static int smiapp_set_compose(struct v4l2_subdev *subdev,
2063 struct v4l2_subdev_pad_config *cfg,
2064 struct v4l2_subdev_selection *sel)
2065 {
2066 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2067 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2068 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2069
2070 smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2071
2072 sel->r.top = 0;
2073 sel->r.left = 0;
2074
2075 if (ssd == sensor->binner)
2076 smiapp_set_compose_binner(subdev, cfg, sel, crops, comp);
2077 else
2078 smiapp_set_compose_scaler(subdev, cfg, sel, crops, comp);
2079
2080 *comp = sel->r;
2081 smiapp_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_COMPOSE);
2082
2083 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
2084 return smiapp_pll_blanking_update(sensor);
2085
2086 return 0;
2087 }
2088
2089 static int __smiapp_sel_supported(struct v4l2_subdev *subdev,
2090 struct v4l2_subdev_selection *sel)
2091 {
2092 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2093 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2094
2095 /* We only implement crop in three places. */
2096 switch (sel->target) {
2097 case V4L2_SEL_TGT_CROP:
2098 case V4L2_SEL_TGT_CROP_BOUNDS:
2099 if (ssd == sensor->pixel_array
2100 && sel->pad == SMIAPP_PA_PAD_SRC)
2101 return 0;
2102 if (ssd == sensor->src
2103 && sel->pad == SMIAPP_PAD_SRC)
2104 return 0;
2105 if (ssd == sensor->scaler
2106 && sel->pad == SMIAPP_PAD_SINK
2107 && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2108 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
2109 return 0;
2110 return -EINVAL;
2111 case V4L2_SEL_TGT_NATIVE_SIZE:
2112 if (ssd == sensor->pixel_array
2113 && sel->pad == SMIAPP_PA_PAD_SRC)
2114 return 0;
2115 return -EINVAL;
2116 case V4L2_SEL_TGT_COMPOSE:
2117 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2118 if (sel->pad == ssd->source_pad)
2119 return -EINVAL;
2120 if (ssd == sensor->binner)
2121 return 0;
2122 if (ssd == sensor->scaler
2123 && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2124 != SMIAPP_SCALING_CAPABILITY_NONE)
2125 return 0;
2126 /* Fall through */
2127 default:
2128 return -EINVAL;
2129 }
2130 }
2131
2132 static int smiapp_set_crop(struct v4l2_subdev *subdev,
2133 struct v4l2_subdev_pad_config *cfg,
2134 struct v4l2_subdev_selection *sel)
2135 {
2136 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2137 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2138 struct v4l2_rect *src_size, *crops[SMIAPP_PADS];
2139 struct v4l2_rect _r;
2140
2141 smiapp_get_crop_compose(subdev, cfg, crops, NULL, sel->which);
2142
2143 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2144 if (sel->pad == ssd->sink_pad)
2145 src_size = &ssd->sink_fmt;
2146 else
2147 src_size = &ssd->compose;
2148 } else {
2149 if (sel->pad == ssd->sink_pad) {
2150 _r.left = 0;
2151 _r.top = 0;
2152 _r.width = v4l2_subdev_get_try_format(subdev, cfg, sel->pad)
2153 ->width;
2154 _r.height = v4l2_subdev_get_try_format(subdev, cfg, sel->pad)
2155 ->height;
2156 src_size = &_r;
2157 } else {
2158 src_size = v4l2_subdev_get_try_compose(
2159 subdev, cfg, ssd->sink_pad);
2160 }
2161 }
2162
2163 if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) {
2164 sel->r.left = 0;
2165 sel->r.top = 0;
2166 }
2167
2168 sel->r.width = min(sel->r.width, src_size->width);
2169 sel->r.height = min(sel->r.height, src_size->height);
2170
2171 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2172 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
2173
2174 *crops[sel->pad] = sel->r;
2175
2176 if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK)
2177 smiapp_propagate(subdev, cfg, sel->which,
2178 V4L2_SEL_TGT_CROP);
2179
2180 return 0;
2181 }
2182
2183 static void smiapp_get_native_size(struct smiapp_subdev *ssd,
2184 struct v4l2_rect *r)
2185 {
2186 r->top = 0;
2187 r->left = 0;
2188 r->width = ssd->sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2189 r->height = ssd->sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2190 }
2191
2192 static int __smiapp_get_selection(struct v4l2_subdev *subdev,
2193 struct v4l2_subdev_pad_config *cfg,
2194 struct v4l2_subdev_selection *sel)
2195 {
2196 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2197 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2198 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2199 struct v4l2_rect sink_fmt;
2200 int ret;
2201
2202 ret = __smiapp_sel_supported(subdev, sel);
2203 if (ret)
2204 return ret;
2205
2206 smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2207
2208 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2209 sink_fmt = ssd->sink_fmt;
2210 } else {
2211 struct v4l2_mbus_framefmt *fmt =
2212 v4l2_subdev_get_try_format(subdev, cfg, ssd->sink_pad);
2213
2214 sink_fmt.left = 0;
2215 sink_fmt.top = 0;
2216 sink_fmt.width = fmt->width;
2217 sink_fmt.height = fmt->height;
2218 }
2219
2220 switch (sel->target) {
2221 case V4L2_SEL_TGT_CROP_BOUNDS:
2222 case V4L2_SEL_TGT_NATIVE_SIZE:
2223 if (ssd == sensor->pixel_array)
2224 smiapp_get_native_size(ssd, &sel->r);
2225 else if (sel->pad == ssd->sink_pad)
2226 sel->r = sink_fmt;
2227 else
2228 sel->r = *comp;
2229 break;
2230 case V4L2_SEL_TGT_CROP:
2231 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2232 sel->r = *crops[sel->pad];
2233 break;
2234 case V4L2_SEL_TGT_COMPOSE:
2235 sel->r = *comp;
2236 break;
2237 }
2238
2239 return 0;
2240 }
2241
2242 static int smiapp_get_selection(struct v4l2_subdev *subdev,
2243 struct v4l2_subdev_pad_config *cfg,
2244 struct v4l2_subdev_selection *sel)
2245 {
2246 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2247 int rval;
2248
2249 mutex_lock(&sensor->mutex);
2250 rval = __smiapp_get_selection(subdev, cfg, sel);
2251 mutex_unlock(&sensor->mutex);
2252
2253 return rval;
2254 }
2255 static int smiapp_set_selection(struct v4l2_subdev *subdev,
2256 struct v4l2_subdev_pad_config *cfg,
2257 struct v4l2_subdev_selection *sel)
2258 {
2259 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2260 int ret;
2261
2262 ret = __smiapp_sel_supported(subdev, sel);
2263 if (ret)
2264 return ret;
2265
2266 mutex_lock(&sensor->mutex);
2267
2268 sel->r.left = max(0, sel->r.left & ~1);
2269 sel->r.top = max(0, sel->r.top & ~1);
2270 sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
2271 sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
2272
2273 sel->r.width = max_t(unsigned int,
2274 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
2275 sel->r.width);
2276 sel->r.height = max_t(unsigned int,
2277 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
2278 sel->r.height);
2279
2280 switch (sel->target) {
2281 case V4L2_SEL_TGT_CROP:
2282 ret = smiapp_set_crop(subdev, cfg, sel);
2283 break;
2284 case V4L2_SEL_TGT_COMPOSE:
2285 ret = smiapp_set_compose(subdev, cfg, sel);
2286 break;
2287 default:
2288 ret = -EINVAL;
2289 }
2290
2291 mutex_unlock(&sensor->mutex);
2292 return ret;
2293 }
2294
2295 static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2296 {
2297 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2298
2299 *frames = sensor->frame_skip;
2300 return 0;
2301 }
2302
2303 static int smiapp_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines)
2304 {
2305 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2306
2307 *lines = sensor->image_start;
2308
2309 return 0;
2310 }
2311
2312 /* -----------------------------------------------------------------------------
2313 * sysfs attributes
2314 */
2315
2316 static ssize_t
2317 smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2318 char *buf)
2319 {
2320 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2321 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2322 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2323 int rval;
2324
2325 if (!sensor->dev_init_done)
2326 return -EBUSY;
2327
2328 rval = smiapp_pm_get_init(sensor);
2329 if (rval < 0)
2330 return -ENODEV;
2331
2332 rval = smiapp_read_nvm(sensor, buf, PAGE_SIZE);
2333 if (rval < 0) {
2334 pm_runtime_put(&client->dev);
2335 dev_err(&client->dev, "nvm read failed\n");
2336 return -ENODEV;
2337 }
2338
2339 pm_runtime_mark_last_busy(&client->dev);
2340 pm_runtime_put_autosuspend(&client->dev);
2341
2342 /*
2343 * NVM is still way below a PAGE_SIZE, so we can safely
2344 * assume this for now.
2345 */
2346 return rval;
2347 }
2348 static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL);
2349
2350 static ssize_t
2351 smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
2352 char *buf)
2353 {
2354 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2355 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2356 struct smiapp_module_info *minfo = &sensor->minfo;
2357
2358 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2359 minfo->manufacturer_id, minfo->model_id,
2360 minfo->revision_number_major) + 1;
2361 }
2362
2363 static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL);
2364
2365 /* -----------------------------------------------------------------------------
2366 * V4L2 subdev core operations
2367 */
2368
2369 static int smiapp_identify_module(struct smiapp_sensor *sensor)
2370 {
2371 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2372 struct smiapp_module_info *minfo = &sensor->minfo;
2373 unsigned int i;
2374 int rval = 0;
2375
2376 minfo->name = SMIAPP_NAME;
2377
2378 /* Module info */
2379 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
2380 &minfo->manufacturer_id);
2381 if (!rval)
2382 rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
2383 &minfo->model_id);
2384 if (!rval)
2385 rval = smiapp_read_8only(sensor,
2386 SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
2387 &minfo->revision_number_major);
2388 if (!rval)
2389 rval = smiapp_read_8only(sensor,
2390 SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
2391 &minfo->revision_number_minor);
2392 if (!rval)
2393 rval = smiapp_read_8only(sensor,
2394 SMIAPP_REG_U8_MODULE_DATE_YEAR,
2395 &minfo->module_year);
2396 if (!rval)
2397 rval = smiapp_read_8only(sensor,
2398 SMIAPP_REG_U8_MODULE_DATE_MONTH,
2399 &minfo->module_month);
2400 if (!rval)
2401 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
2402 &minfo->module_day);
2403
2404 /* Sensor info */
2405 if (!rval)
2406 rval = smiapp_read_8only(sensor,
2407 SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
2408 &minfo->sensor_manufacturer_id);
2409 if (!rval)
2410 rval = smiapp_read_8only(sensor,
2411 SMIAPP_REG_U16_SENSOR_MODEL_ID,
2412 &minfo->sensor_model_id);
2413 if (!rval)
2414 rval = smiapp_read_8only(sensor,
2415 SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
2416 &minfo->sensor_revision_number);
2417 if (!rval)
2418 rval = smiapp_read_8only(sensor,
2419 SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
2420 &minfo->sensor_firmware_version);
2421
2422 /* SMIA */
2423 if (!rval)
2424 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2425 &minfo->smia_version);
2426 if (!rval)
2427 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2428 &minfo->smiapp_version);
2429
2430 if (rval) {
2431 dev_err(&client->dev, "sensor detection failed\n");
2432 return -ENODEV;
2433 }
2434
2435 dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n",
2436 minfo->manufacturer_id, minfo->model_id);
2437
2438 dev_dbg(&client->dev,
2439 "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n",
2440 minfo->revision_number_major, minfo->revision_number_minor,
2441 minfo->module_year, minfo->module_month, minfo->module_day);
2442
2443 dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n",
2444 minfo->sensor_manufacturer_id, minfo->sensor_model_id);
2445
2446 dev_dbg(&client->dev,
2447 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2448 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2449
2450 dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n",
2451 minfo->smia_version, minfo->smiapp_version);
2452
2453 /*
2454 * Some modules have bad data in the lvalues below. Hope the
2455 * rvalues have better stuff. The lvalues are module
2456 * parameters whereas the rvalues are sensor parameters.
2457 */
2458 if (!minfo->manufacturer_id && !minfo->model_id) {
2459 minfo->manufacturer_id = minfo->sensor_manufacturer_id;
2460 minfo->model_id = minfo->sensor_model_id;
2461 minfo->revision_number_major = minfo->sensor_revision_number;
2462 }
2463
2464 for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) {
2465 if (smiapp_module_idents[i].manufacturer_id
2466 != minfo->manufacturer_id)
2467 continue;
2468 if (smiapp_module_idents[i].model_id != minfo->model_id)
2469 continue;
2470 if (smiapp_module_idents[i].flags
2471 & SMIAPP_MODULE_IDENT_FLAG_REV_LE) {
2472 if (smiapp_module_idents[i].revision_number_major
2473 < minfo->revision_number_major)
2474 continue;
2475 } else {
2476 if (smiapp_module_idents[i].revision_number_major
2477 != minfo->revision_number_major)
2478 continue;
2479 }
2480
2481 minfo->name = smiapp_module_idents[i].name;
2482 minfo->quirk = smiapp_module_idents[i].quirk;
2483 break;
2484 }
2485
2486 if (i >= ARRAY_SIZE(smiapp_module_idents))
2487 dev_warn(&client->dev,
2488 "no quirks for this module; let's hope it's fully compliant\n");
2489
2490 dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n",
2491 minfo->name, minfo->manufacturer_id, minfo->model_id,
2492 minfo->revision_number_major);
2493
2494 return 0;
2495 }
2496
2497 static const struct v4l2_subdev_ops smiapp_ops;
2498 static const struct v4l2_subdev_internal_ops smiapp_internal_ops;
2499 static const struct media_entity_operations smiapp_entity_ops;
2500
2501 static int smiapp_register_subdev(struct smiapp_sensor *sensor,
2502 struct smiapp_subdev *ssd,
2503 struct smiapp_subdev *sink_ssd,
2504 u16 source_pad, u16 sink_pad, u32 link_flags)
2505 {
2506 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2507 int rval;
2508
2509 if (!sink_ssd)
2510 return 0;
2511
2512 rval = media_entity_pads_init(&ssd->sd.entity,
2513 ssd->npads, ssd->pads);
2514 if (rval) {
2515 dev_err(&client->dev,
2516 "media_entity_pads_init failed\n");
2517 return rval;
2518 }
2519
2520 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev,
2521 &ssd->sd);
2522 if (rval) {
2523 dev_err(&client->dev,
2524 "v4l2_device_register_subdev failed\n");
2525 return rval;
2526 }
2527
2528 rval = media_create_pad_link(&ssd->sd.entity, source_pad,
2529 &sink_ssd->sd.entity, sink_pad,
2530 link_flags);
2531 if (rval) {
2532 dev_err(&client->dev,
2533 "media_create_pad_link failed\n");
2534 v4l2_device_unregister_subdev(&ssd->sd);
2535 return rval;
2536 }
2537
2538 return 0;
2539 }
2540
2541 static void smiapp_unregistered(struct v4l2_subdev *subdev)
2542 {
2543 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2544 unsigned int i;
2545
2546 for (i = 1; i < sensor->ssds_used; i++)
2547 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2548 }
2549
2550 static int smiapp_registered(struct v4l2_subdev *subdev)
2551 {
2552 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2553 int rval;
2554
2555 if (sensor->scaler) {
2556 rval = smiapp_register_subdev(
2557 sensor, sensor->binner, sensor->scaler,
2558 SMIAPP_PAD_SRC, SMIAPP_PAD_SINK,
2559 MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
2560 if (rval < 0)
2561 return rval;
2562 }
2563
2564 rval = smiapp_register_subdev(
2565 sensor, sensor->pixel_array, sensor->binner,
2566 SMIAPP_PA_PAD_SRC, SMIAPP_PAD_SINK,
2567 MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
2568 if (rval)
2569 goto out_err;
2570
2571 return 0;
2572
2573 out_err:
2574 smiapp_unregistered(subdev);
2575
2576 return rval;
2577 }
2578
2579 static void smiapp_cleanup(struct smiapp_sensor *sensor)
2580 {
2581 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2582
2583 device_remove_file(&client->dev, &dev_attr_nvm);
2584 device_remove_file(&client->dev, &dev_attr_ident);
2585
2586 smiapp_free_controls(sensor);
2587 }
2588
2589 static void smiapp_create_subdev(struct smiapp_sensor *sensor,
2590 struct smiapp_subdev *ssd, const char *name,
2591 unsigned short num_pads)
2592 {
2593 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2594
2595 if (!ssd)
2596 return;
2597
2598 if (ssd != sensor->src)
2599 v4l2_subdev_init(&ssd->sd, &smiapp_ops);
2600
2601 ssd->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2602 ssd->sensor = sensor;
2603
2604 ssd->npads = num_pads;
2605 ssd->source_pad = num_pads - 1;
2606
2607 v4l2_i2c_subdev_set_name(&ssd->sd, client, sensor->minfo.name, name);
2608
2609 smiapp_get_native_size(ssd, &ssd->sink_fmt);
2610
2611 ssd->compose.width = ssd->sink_fmt.width;
2612 ssd->compose.height = ssd->sink_fmt.height;
2613 ssd->crop[ssd->source_pad] = ssd->compose;
2614 ssd->pads[ssd->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2615 if (ssd != sensor->pixel_array) {
2616 ssd->crop[ssd->sink_pad] = ssd->compose;
2617 ssd->pads[ssd->sink_pad].flags = MEDIA_PAD_FL_SINK;
2618 }
2619
2620 ssd->sd.entity.ops = &smiapp_entity_ops;
2621
2622 if (ssd == sensor->src)
2623 return;
2624
2625 ssd->sd.internal_ops = &smiapp_internal_ops;
2626 ssd->sd.owner = THIS_MODULE;
2627 ssd->sd.dev = &client->dev;
2628 v4l2_set_subdevdata(&ssd->sd, client);
2629 }
2630
2631 static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2632 {
2633 struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
2634 struct smiapp_sensor *sensor = ssd->sensor;
2635 unsigned int i;
2636
2637 mutex_lock(&sensor->mutex);
2638
2639 for (i = 0; i < ssd->npads; i++) {
2640 struct v4l2_mbus_framefmt *try_fmt =
2641 v4l2_subdev_get_try_format(sd, fh->pad, i);
2642 struct v4l2_rect *try_crop =
2643 v4l2_subdev_get_try_crop(sd, fh->pad, i);
2644 struct v4l2_rect *try_comp;
2645
2646 smiapp_get_native_size(ssd, try_crop);
2647
2648 try_fmt->width = try_crop->width;
2649 try_fmt->height = try_crop->height;
2650 try_fmt->code = sensor->internal_csi_format->code;
2651 try_fmt->field = V4L2_FIELD_NONE;
2652
2653 if (ssd != sensor->pixel_array)
2654 continue;
2655
2656 try_comp = v4l2_subdev_get_try_compose(sd, fh->pad, i);
2657 *try_comp = *try_crop;
2658 }
2659
2660 mutex_unlock(&sensor->mutex);
2661
2662 return 0;
2663 }
2664
2665 static const struct v4l2_subdev_video_ops smiapp_video_ops = {
2666 .s_stream = smiapp_set_stream,
2667 };
2668
2669 static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
2670 .enum_mbus_code = smiapp_enum_mbus_code,
2671 .get_fmt = smiapp_get_format,
2672 .set_fmt = smiapp_set_format,
2673 .get_selection = smiapp_get_selection,
2674 .set_selection = smiapp_set_selection,
2675 };
2676
2677 static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
2678 .g_skip_frames = smiapp_get_skip_frames,
2679 .g_skip_top_lines = smiapp_get_skip_top_lines,
2680 };
2681
2682 static const struct v4l2_subdev_ops smiapp_ops = {
2683 .video = &smiapp_video_ops,
2684 .pad = &smiapp_pad_ops,
2685 .sensor = &smiapp_sensor_ops,
2686 };
2687
2688 static const struct media_entity_operations smiapp_entity_ops = {
2689 .link_validate = v4l2_subdev_link_validate,
2690 };
2691
2692 static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
2693 .registered = smiapp_registered,
2694 .unregistered = smiapp_unregistered,
2695 .open = smiapp_open,
2696 };
2697
2698 static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
2699 .open = smiapp_open,
2700 };
2701
2702 /* -----------------------------------------------------------------------------
2703 * I2C Driver
2704 */
2705
2706 static int __maybe_unused smiapp_suspend(struct device *dev)
2707 {
2708 struct i2c_client *client = to_i2c_client(dev);
2709 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2710 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2711 bool streaming = sensor->streaming;
2712 int rval;
2713
2714 rval = pm_runtime_get_sync(dev);
2715 if (rval < 0) {
2716 if (rval != -EBUSY && rval != -EAGAIN)
2717 pm_runtime_set_active(&client->dev);
2718 pm_runtime_put(dev);
2719 return -EAGAIN;
2720 }
2721
2722 if (sensor->streaming)
2723 smiapp_stop_streaming(sensor);
2724
2725 /* save state for resume */
2726 sensor->streaming = streaming;
2727
2728 return 0;
2729 }
2730
2731 static int __maybe_unused smiapp_resume(struct device *dev)
2732 {
2733 struct i2c_client *client = to_i2c_client(dev);
2734 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2735 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2736 int rval = 0;
2737
2738 pm_runtime_put(dev);
2739
2740 if (sensor->streaming)
2741 rval = smiapp_start_streaming(sensor);
2742
2743 return rval;
2744 }
2745
2746 static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
2747 {
2748 struct smiapp_hwconfig *hwcfg;
2749 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
2750 struct fwnode_handle *ep;
2751 struct fwnode_handle *fwnode = dev_fwnode(dev);
2752 u32 rotation;
2753 int i;
2754 int rval;
2755
2756 if (!fwnode)
2757 return dev->platform_data;
2758
2759 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
2760 if (!ep)
2761 return NULL;
2762
2763 bus_cfg.bus_type = V4L2_MBUS_CSI2_DPHY;
2764 rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
2765 if (rval == -ENXIO) {
2766 bus_cfg = (struct v4l2_fwnode_endpoint)
2767 { .bus_type = V4L2_MBUS_CCP2 };
2768 rval = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
2769 }
2770 if (rval)
2771 goto out_err;
2772
2773 hwcfg = devm_kzalloc(dev, sizeof(*hwcfg), GFP_KERNEL);
2774 if (!hwcfg)
2775 goto out_err;
2776
2777 switch (bus_cfg.bus_type) {
2778 case V4L2_MBUS_CSI2_DPHY:
2779 hwcfg->csi_signalling_mode = SMIAPP_CSI_SIGNALLING_MODE_CSI2;
2780 hwcfg->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes;
2781 break;
2782 case V4L2_MBUS_CCP2:
2783 hwcfg->csi_signalling_mode = (bus_cfg.bus.mipi_csi1.strobe) ?
2784 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_STROBE :
2785 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_CLOCK;
2786 hwcfg->lanes = 1;
2787 break;
2788 default:
2789 dev_err(dev, "unsupported bus %u\n", bus_cfg.bus_type);
2790 goto out_err;
2791 }
2792
2793 dev_dbg(dev, "lanes %u\n", hwcfg->lanes);
2794
2795 rval = fwnode_property_read_u32(fwnode, "rotation", &rotation);
2796 if (!rval) {
2797 switch (rotation) {
2798 case 180:
2799 hwcfg->module_board_orient =
2800 SMIAPP_MODULE_BOARD_ORIENT_180;
2801 /* Fall through */
2802 case 0:
2803 break;
2804 default:
2805 dev_err(dev, "invalid rotation %u\n", rotation);
2806 goto out_err;
2807 }
2808 }
2809
2810 rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
2811 &hwcfg->ext_clk);
2812 if (rval)
2813 dev_info(dev, "can't get clock-frequency\n");
2814
2815 dev_dbg(dev, "clk %d, mode %d\n", hwcfg->ext_clk,
2816 hwcfg->csi_signalling_mode);
2817
2818 if (!bus_cfg.nr_of_link_frequencies) {
2819 dev_warn(dev, "no link frequencies defined\n");
2820 goto out_err;
2821 }
2822
2823 hwcfg->op_sys_clock = devm_kcalloc(
2824 dev, bus_cfg.nr_of_link_frequencies + 1 /* guardian */,
2825 sizeof(*hwcfg->op_sys_clock), GFP_KERNEL);
2826 if (!hwcfg->op_sys_clock)
2827 goto out_err;
2828
2829 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
2830 hwcfg->op_sys_clock[i] = bus_cfg.link_frequencies[i];
2831 dev_dbg(dev, "freq %d: %lld\n", i, hwcfg->op_sys_clock[i]);
2832 }
2833
2834 v4l2_fwnode_endpoint_free(&bus_cfg);
2835 fwnode_handle_put(ep);
2836 return hwcfg;
2837
2838 out_err:
2839 v4l2_fwnode_endpoint_free(&bus_cfg);
2840 fwnode_handle_put(ep);
2841 return NULL;
2842 }
2843
2844 static int smiapp_probe(struct i2c_client *client)
2845 {
2846 struct smiapp_sensor *sensor;
2847 struct smiapp_hwconfig *hwcfg = smiapp_get_hwconfig(&client->dev);
2848 unsigned int i;
2849 int rval;
2850
2851 if (hwcfg == NULL)
2852 return -ENODEV;
2853
2854 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
2855 if (sensor == NULL)
2856 return -ENOMEM;
2857
2858 sensor->hwcfg = hwcfg;
2859 sensor->src = &sensor->ssds[sensor->ssds_used];
2860
2861 v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops);
2862 sensor->src->sd.internal_ops = &smiapp_internal_src_ops;
2863
2864 sensor->vana = devm_regulator_get(&client->dev, "vana");
2865 if (IS_ERR(sensor->vana)) {
2866 dev_err(&client->dev, "could not get regulator for vana\n");
2867 return PTR_ERR(sensor->vana);
2868 }
2869
2870 sensor->ext_clk = devm_clk_get(&client->dev, NULL);
2871 if (PTR_ERR(sensor->ext_clk) == -ENOENT) {
2872 dev_info(&client->dev, "no clock defined, continuing...\n");
2873 sensor->ext_clk = NULL;
2874 } else if (IS_ERR(sensor->ext_clk)) {
2875 dev_err(&client->dev, "could not get clock (%ld)\n",
2876 PTR_ERR(sensor->ext_clk));
2877 return -EPROBE_DEFER;
2878 }
2879
2880 if (sensor->ext_clk) {
2881 if (sensor->hwcfg->ext_clk) {
2882 unsigned long rate;
2883
2884 rval = clk_set_rate(sensor->ext_clk,
2885 sensor->hwcfg->ext_clk);
2886 if (rval < 0) {
2887 dev_err(&client->dev,
2888 "unable to set clock freq to %u\n",
2889 sensor->hwcfg->ext_clk);
2890 return rval;
2891 }
2892
2893 rate = clk_get_rate(sensor->ext_clk);
2894 if (rate != sensor->hwcfg->ext_clk) {
2895 dev_err(&client->dev,
2896 "can't set clock freq, asked for %u but got %lu\n",
2897 sensor->hwcfg->ext_clk, rate);
2898 return rval;
2899 }
2900 } else {
2901 sensor->hwcfg->ext_clk = clk_get_rate(sensor->ext_clk);
2902 dev_dbg(&client->dev, "obtained clock freq %u\n",
2903 sensor->hwcfg->ext_clk);
2904 }
2905 } else if (sensor->hwcfg->ext_clk) {
2906 dev_dbg(&client->dev, "assuming clock freq %u\n",
2907 sensor->hwcfg->ext_clk);
2908 } else {
2909 dev_err(&client->dev, "unable to obtain clock freq\n");
2910 return -EINVAL;
2911 }
2912
2913 sensor->xshutdown = devm_gpiod_get_optional(&client->dev, "xshutdown",
2914 GPIOD_OUT_LOW);
2915 if (IS_ERR(sensor->xshutdown))
2916 return PTR_ERR(sensor->xshutdown);
2917
2918 rval = smiapp_power_on(&client->dev);
2919 if (rval < 0)
2920 return rval;
2921
2922 mutex_init(&sensor->mutex);
2923
2924 rval = smiapp_identify_module(sensor);
2925 if (rval) {
2926 rval = -ENODEV;
2927 goto out_power_off;
2928 }
2929
2930 rval = smiapp_get_all_limits(sensor);
2931 if (rval) {
2932 rval = -ENODEV;
2933 goto out_power_off;
2934 }
2935
2936 rval = smiapp_read_frame_fmt(sensor);
2937 if (rval) {
2938 rval = -ENODEV;
2939 goto out_power_off;
2940 }
2941
2942 /*
2943 * Handle Sensor Module orientation on the board.
2944 *
2945 * The application of H-FLIP and V-FLIP on the sensor is modified by
2946 * the sensor orientation on the board.
2947 *
2948 * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
2949 * both H-FLIP and V-FLIP for normal operation which also implies
2950 * that a set/unset operation for user space HFLIP and VFLIP v4l2
2951 * controls will need to be internally inverted.
2952 *
2953 * Rotation also changes the bayer pattern.
2954 */
2955 if (sensor->hwcfg->module_board_orient ==
2956 SMIAPP_MODULE_BOARD_ORIENT_180)
2957 sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP |
2958 SMIAPP_IMAGE_ORIENTATION_VFLIP;
2959
2960 rval = smiapp_call_quirk(sensor, limits);
2961 if (rval) {
2962 dev_err(&client->dev, "limits quirks failed\n");
2963 goto out_power_off;
2964 }
2965
2966 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) {
2967 u32 val;
2968
2969 rval = smiapp_read(sensor,
2970 SMIAPP_REG_U8_BINNING_SUBTYPES, &val);
2971 if (rval < 0) {
2972 rval = -ENODEV;
2973 goto out_power_off;
2974 }
2975 sensor->nbinning_subtypes = min_t(u8, val,
2976 SMIAPP_BINNING_SUBTYPES);
2977
2978 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2979 rval = smiapp_read(
2980 sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val);
2981 if (rval < 0) {
2982 rval = -ENODEV;
2983 goto out_power_off;
2984 }
2985 sensor->binning_subtypes[i] =
2986 *(struct smiapp_binning_subtype *)&val;
2987
2988 dev_dbg(&client->dev, "binning %xx%x\n",
2989 sensor->binning_subtypes[i].horizontal,
2990 sensor->binning_subtypes[i].vertical);
2991 }
2992 }
2993 sensor->binning_horizontal = 1;
2994 sensor->binning_vertical = 1;
2995
2996 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
2997 dev_err(&client->dev, "sysfs ident entry creation failed\n");
2998 rval = -ENOENT;
2999 goto out_power_off;
3000 }
3001
3002 if (sensor->minfo.smiapp_version &&
3003 sensor->limits[SMIAPP_LIMIT_DATA_TRANSFER_IF_CAPABILITY] &
3004 SMIAPP_DATA_TRANSFER_IF_CAPABILITY_SUPPORTED) {
3005 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
3006 dev_err(&client->dev, "sysfs nvm entry failed\n");
3007 rval = -EBUSY;
3008 goto out_cleanup;
3009 }
3010 }
3011
3012 /* We consider this as profile 0 sensor if any of these are zero. */
3013 if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] ||
3014 !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] ||
3015 !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] ||
3016 !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) {
3017 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0;
3018 } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
3019 != SMIAPP_SCALING_CAPABILITY_NONE) {
3020 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
3021 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
3022 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1;
3023 else
3024 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2;
3025 sensor->scaler = &sensor->ssds[sensor->ssds_used];
3026 sensor->ssds_used++;
3027 } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
3028 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
3029 sensor->scaler = &sensor->ssds[sensor->ssds_used];
3030 sensor->ssds_used++;
3031 }
3032 sensor->binner = &sensor->ssds[sensor->ssds_used];
3033 sensor->ssds_used++;
3034 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
3035 sensor->ssds_used++;
3036
3037 sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
3038
3039 /* prepare PLL configuration input values */
3040 sensor->pll.bus_type = SMIAPP_PLL_BUS_TYPE_CSI2;
3041 sensor->pll.csi2.lanes = sensor->hwcfg->lanes;
3042 sensor->pll.ext_clk_freq_hz = sensor->hwcfg->ext_clk;
3043 sensor->pll.scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
3044 /* Profile 0 sensors have no separate OP clock branch. */
3045 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
3046 sensor->pll.flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
3047
3048 smiapp_create_subdev(sensor, sensor->scaler, " scaler", 2);
3049 smiapp_create_subdev(sensor, sensor->binner, " binner", 2);
3050 smiapp_create_subdev(sensor, sensor->pixel_array, " pixel_array", 1);
3051
3052 dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
3053
3054 sensor->pixel_array->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
3055
3056 rval = smiapp_init_controls(sensor);
3057 if (rval < 0)
3058 goto out_cleanup;
3059
3060 rval = smiapp_call_quirk(sensor, init);
3061 if (rval)
3062 goto out_cleanup;
3063
3064 rval = smiapp_get_mbus_formats(sensor);
3065 if (rval) {
3066 rval = -ENODEV;
3067 goto out_cleanup;
3068 }
3069
3070 rval = smiapp_init_late_controls(sensor);
3071 if (rval) {
3072 rval = -ENODEV;
3073 goto out_cleanup;
3074 }
3075
3076 mutex_lock(&sensor->mutex);
3077 rval = smiapp_pll_blanking_update(sensor);
3078 mutex_unlock(&sensor->mutex);
3079 if (rval) {
3080 dev_err(&client->dev, "update mode failed\n");
3081 goto out_cleanup;
3082 }
3083
3084 sensor->streaming = false;
3085 sensor->dev_init_done = true;
3086
3087 rval = media_entity_pads_init(&sensor->src->sd.entity, 2,
3088 sensor->src->pads);
3089 if (rval < 0)
3090 goto out_media_entity_cleanup;
3091
3092 pm_runtime_set_active(&client->dev);
3093 pm_runtime_get_noresume(&client->dev);
3094 pm_runtime_enable(&client->dev);
3095
3096 rval = v4l2_async_register_subdev_sensor_common(&sensor->src->sd);
3097 if (rval < 0)
3098 goto out_disable_runtime_pm;
3099
3100 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
3101 pm_runtime_use_autosuspend(&client->dev);
3102 pm_runtime_put_autosuspend(&client->dev);
3103
3104 return 0;
3105
3106 out_disable_runtime_pm:
3107 pm_runtime_disable(&client->dev);
3108
3109 out_media_entity_cleanup:
3110 media_entity_cleanup(&sensor->src->sd.entity);
3111
3112 out_cleanup:
3113 smiapp_cleanup(sensor);
3114
3115 out_power_off:
3116 smiapp_power_off(&client->dev);
3117 mutex_destroy(&sensor->mutex);
3118
3119 return rval;
3120 }
3121
3122 static int smiapp_remove(struct i2c_client *client)
3123 {
3124 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3125 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
3126 unsigned int i;
3127
3128 v4l2_async_unregister_subdev(subdev);
3129
3130 pm_runtime_disable(&client->dev);
3131 if (!pm_runtime_status_suspended(&client->dev))
3132 smiapp_power_off(&client->dev);
3133 pm_runtime_set_suspended(&client->dev);
3134
3135 for (i = 0; i < sensor->ssds_used; i++) {
3136 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
3137 media_entity_cleanup(&sensor->ssds[i].sd.entity);
3138 }
3139 smiapp_cleanup(sensor);
3140 mutex_destroy(&sensor->mutex);
3141
3142 return 0;
3143 }
3144
3145 static const struct of_device_id smiapp_of_table[] = {
3146 { .compatible = "nokia,smia" },
3147 { },
3148 };
3149 MODULE_DEVICE_TABLE(of, smiapp_of_table);
3150
3151 static const struct i2c_device_id smiapp_id_table[] = {
3152 { SMIAPP_NAME, 0 },
3153 { },
3154 };
3155 MODULE_DEVICE_TABLE(i2c, smiapp_id_table);
3156
3157 static const struct dev_pm_ops smiapp_pm_ops = {
3158 SET_SYSTEM_SLEEP_PM_OPS(smiapp_suspend, smiapp_resume)
3159 SET_RUNTIME_PM_OPS(smiapp_power_off, smiapp_power_on, NULL)
3160 };
3161
3162 static struct i2c_driver smiapp_i2c_driver = {
3163 .driver = {
3164 .of_match_table = smiapp_of_table,
3165 .name = SMIAPP_NAME,
3166 .pm = &smiapp_pm_ops,
3167 },
3168 .probe_new = smiapp_probe,
3169 .remove = smiapp_remove,
3170 .id_table = smiapp_id_table,
3171 };
3172
3173 module_i2c_driver(smiapp_i2c_driver);
3174
3175 MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
3176 MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
3177 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support