1 /*
2 * drivers/media/i2c/smiapp/smiapp-core.c
3 *
4 * Generic driver for SMIA/SMIA++ compliant camera modules
5 *
6 * Copyright (C) 2010--2012 Nokia Corporation
7 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
8 *
9 * Based on smiapp driver by Vimarsh Zutshi
10 * Based on jt8ev1.c by Vimarsh Zutshi
11 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2 as published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 */
22
23 #include <linux/clk.h>
24 #include <linux/delay.h>
25 #include <linux/device.h>
26 #include <linux/gpio.h>
27 #include <linux/gpio/consumer.h>
28 #include <linux/module.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/property.h>
31 #include <linux/regulator/consumer.h>
32 #include <linux/slab.h>
33 #include <linux/smiapp.h>
34 #include <linux/v4l2-mediabus.h>
35 #include <media/v4l2-fwnode.h>
36 #include <media/v4l2-device.h>
37
38 #include "smiapp.h"
39
40 #define SMIAPP_ALIGN_DIM(dim, flags) \
41 ((flags) & V4L2_SEL_FLAG_GE \
42 ? ALIGN((dim), 2) \
43 : (dim) & ~1)
44
45 /*
46 * smiapp_module_idents - supported camera modules
47 */
48 static const struct smiapp_module_ident smiapp_module_idents[] = {
49 SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"),
50 SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"),
51 SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
52 SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
53 SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
54 SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
55 SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
56 SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
57 SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
58 SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
59 SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
60 };
61
62 /*
63 *
64 * Dynamic Capability Identification
65 *
66 */
67
smiapp_read_frame_fmt(struct smiapp_sensor * sensor)68 static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
69 {
70 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
71 u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
72 unsigned int i;
73 int pixel_count = 0;
74 int line_count = 0;
75 int rval;
76
77 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
78 &fmt_model_type);
79 if (rval)
80 return rval;
81
82 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE,
83 &fmt_model_subtype);
84 if (rval)
85 return rval;
86
87 ncol_desc = (fmt_model_subtype
88 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK)
89 >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT;
90 nrow_desc = fmt_model_subtype
91 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK;
92
93 dev_dbg(&client->dev, "format_model_type %s\n",
94 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE
95 ? "2 byte" :
96 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE
97 ? "4 byte" : "is simply bad");
98
99 for (i = 0; i < ncol_desc + nrow_desc; i++) {
100 u32 desc;
101 u32 pixelcode;
102 u32 pixels;
103 char *which;
104 char *what;
105 u32 reg;
106
107 if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) {
108 reg = SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i);
109 rval = smiapp_read(sensor, reg, &desc);
110 if (rval)
111 return rval;
112
113 pixelcode =
114 (desc
115 & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK)
116 >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT;
117 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK;
118 } else if (fmt_model_type
119 == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) {
120 reg = SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i);
121 rval = smiapp_read(sensor, reg, &desc);
122 if (rval)
123 return rval;
124
125 pixelcode =
126 (desc
127 & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK)
128 >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT;
129 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK;
130 } else {
131 dev_dbg(&client->dev,
132 "invalid frame format model type %d\n",
133 fmt_model_type);
134 return -EINVAL;
135 }
136
137 if (i < ncol_desc)
138 which = "columns";
139 else
140 which = "rows";
141
142 switch (pixelcode) {
143 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
144 what = "embedded";
145 break;
146 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY:
147 what = "dummy";
148 break;
149 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK:
150 what = "black";
151 break;
152 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK:
153 what = "dark";
154 break;
155 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
156 what = "visible";
157 break;
158 default:
159 what = "invalid";
160 break;
161 }
162
163 dev_dbg(&client->dev,
164 "0x%8.8x %s pixels: %d %s (pixelcode %u)\n", reg,
165 what, pixels, which, pixelcode);
166
167 if (i < ncol_desc) {
168 if (pixelcode ==
169 SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE)
170 sensor->visible_pixel_start = pixel_count;
171 pixel_count += pixels;
172 continue;
173 }
174
175 /* Handle row descriptors */
176 switch (pixelcode) {
177 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
178 if (sensor->embedded_end)
179 break;
180 sensor->embedded_start = line_count;
181 sensor->embedded_end = line_count + pixels;
182 break;
183 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
184 sensor->image_start = line_count;
185 break;
186 }
187 line_count += pixels;
188 }
189
190 if (sensor->embedded_end > sensor->image_start) {
191 dev_dbg(&client->dev,
192 "adjusting image start line to %u (was %u)\n",
193 sensor->embedded_end, sensor->image_start);
194 sensor->image_start = sensor->embedded_end;
195 }
196
197 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
198 sensor->embedded_start, sensor->embedded_end);
199 dev_dbg(&client->dev, "image data starts at line %d\n",
200 sensor->image_start);
201
202 return 0;
203 }
204
smiapp_pll_configure(struct smiapp_sensor * sensor)205 static int smiapp_pll_configure(struct smiapp_sensor *sensor)
206 {
207 struct smiapp_pll *pll = &sensor->pll;
208 int rval;
209
210 rval = smiapp_write(
211 sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt.pix_clk_div);
212 if (rval < 0)
213 return rval;
214
215 rval = smiapp_write(
216 sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt.sys_clk_div);
217 if (rval < 0)
218 return rval;
219
220 rval = smiapp_write(
221 sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div);
222 if (rval < 0)
223 return rval;
224
225 rval = smiapp_write(
226 sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier);
227 if (rval < 0)
228 return rval;
229
230 /* Lane op clock ratio does not apply here. */
231 rval = smiapp_write(
232 sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS,
233 DIV_ROUND_UP(pll->op.sys_clk_freq_hz, 1000000 / 256 / 256));
234 if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
235 return rval;
236
237 rval = smiapp_write(
238 sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op.pix_clk_div);
239 if (rval < 0)
240 return rval;
241
242 return smiapp_write(
243 sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op.sys_clk_div);
244 }
245
smiapp_pll_try(struct smiapp_sensor * sensor,struct smiapp_pll * pll)246 static int smiapp_pll_try(struct smiapp_sensor *sensor,
247 struct smiapp_pll *pll)
248 {
249 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
250 struct smiapp_pll_limits lim = {
251 .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV],
252 .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV],
253 .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ],
254 .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ],
255 .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER],
256 .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER],
257 .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
258 .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],
259
260 .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
261 .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
262 .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
263 .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
264 .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
265 .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
266 .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
267 .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
268
269 .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
270 .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
271 .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
272 .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
273 .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
274 .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
275 .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
276 .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
277
278 .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
279 .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
280 };
281
282 return smiapp_pll_calculate(&client->dev, &lim, pll);
283 }
284
smiapp_pll_update(struct smiapp_sensor * sensor)285 static int smiapp_pll_update(struct smiapp_sensor *sensor)
286 {
287 struct smiapp_pll *pll = &sensor->pll;
288 int rval;
289
290 pll->binning_horizontal = sensor->binning_horizontal;
291 pll->binning_vertical = sensor->binning_vertical;
292 pll->link_freq =
293 sensor->link_freq->qmenu_int[sensor->link_freq->val];
294 pll->scale_m = sensor->scale_m;
295 pll->bits_per_pixel = sensor->csi_format->compressed;
296
297 rval = smiapp_pll_try(sensor, pll);
298 if (rval < 0)
299 return rval;
300
301 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray,
302 pll->pixel_rate_pixel_array);
303 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi);
304
305 return 0;
306 }
307
308
309 /*
310 *
311 * V4L2 Controls handling
312 *
313 */
314
__smiapp_update_exposure_limits(struct smiapp_sensor * sensor)315 static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor)
316 {
317 struct v4l2_ctrl *ctrl = sensor->exposure;
318 int max;
319
320 max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
321 + sensor->vblank->val
322 - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN];
323
324 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max);
325 }
326
327 /*
328 * Order matters.
329 *
330 * 1. Bits-per-pixel, descending.
331 * 2. Bits-per-pixel compressed, descending.
332 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
333 * orders must be defined.
334 */
335 static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = {
336 { MEDIA_BUS_FMT_SGRBG16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_GRBG, },
337 { MEDIA_BUS_FMT_SRGGB16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_RGGB, },
338 { MEDIA_BUS_FMT_SBGGR16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_BGGR, },
339 { MEDIA_BUS_FMT_SGBRG16_1X16, 16, 16, SMIAPP_PIXEL_ORDER_GBRG, },
340 { MEDIA_BUS_FMT_SGRBG14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_GRBG, },
341 { MEDIA_BUS_FMT_SRGGB14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_RGGB, },
342 { MEDIA_BUS_FMT_SBGGR14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_BGGR, },
343 { MEDIA_BUS_FMT_SGBRG14_1X14, 14, 14, SMIAPP_PIXEL_ORDER_GBRG, },
344 { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, },
345 { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, },
346 { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, },
347 { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, },
348 { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, },
349 { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, },
350 { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, },
351 { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, },
352 { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, },
353 { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, },
354 { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, },
355 { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, },
356 { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, },
357 { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, },
358 { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, },
359 { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, },
360 };
361
362 static const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
363
364 #define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
365 - (unsigned long)smiapp_csi_data_formats) \
366 / sizeof(*smiapp_csi_data_formats))
367
smiapp_pixel_order(struct smiapp_sensor * sensor)368 static u32 smiapp_pixel_order(struct smiapp_sensor *sensor)
369 {
370 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
371 int flip = 0;
372
373 if (sensor->hflip) {
374 if (sensor->hflip->val)
375 flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
376
377 if (sensor->vflip->val)
378 flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
379 }
380
381 flip ^= sensor->hvflip_inv_mask;
382
383 dev_dbg(&client->dev, "flip %d\n", flip);
384 return sensor->default_pixel_order ^ flip;
385 }
386
smiapp_update_mbus_formats(struct smiapp_sensor * sensor)387 static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor)
388 {
389 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
390 unsigned int csi_format_idx =
391 to_csi_format_idx(sensor->csi_format) & ~3;
392 unsigned int internal_csi_format_idx =
393 to_csi_format_idx(sensor->internal_csi_format) & ~3;
394 unsigned int pixel_order = smiapp_pixel_order(sensor);
395
396 sensor->mbus_frame_fmts =
397 sensor->default_mbus_frame_fmts << pixel_order;
398 sensor->csi_format =
399 &smiapp_csi_data_formats[csi_format_idx + pixel_order];
400 sensor->internal_csi_format =
401 &smiapp_csi_data_formats[internal_csi_format_idx
402 + pixel_order];
403
404 BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order
405 >= ARRAY_SIZE(smiapp_csi_data_formats));
406
407 dev_dbg(&client->dev, "new pixel order %s\n",
408 pixel_order_str[pixel_order]);
409 }
410
411 static const char * const smiapp_test_patterns[] = {
412 "Disabled",
413 "Solid Colour",
414 "Eight Vertical Colour Bars",
415 "Colour Bars With Fade to Grey",
416 "Pseudorandom Sequence (PN9)",
417 };
418
smiapp_set_ctrl(struct v4l2_ctrl * ctrl)419 static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl)
420 {
421 struct smiapp_sensor *sensor =
422 container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler)
423 ->sensor;
424 u32 orient = 0;
425 int exposure;
426 int rval;
427
428 switch (ctrl->id) {
429 case V4L2_CID_ANALOGUE_GAIN:
430 return smiapp_write(
431 sensor,
432 SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val);
433
434 case V4L2_CID_EXPOSURE:
435 return smiapp_write(
436 sensor,
437 SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val);
438
439 case V4L2_CID_HFLIP:
440 case V4L2_CID_VFLIP:
441 if (sensor->streaming)
442 return -EBUSY;
443
444 if (sensor->hflip->val)
445 orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
446
447 if (sensor->vflip->val)
448 orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
449
450 orient ^= sensor->hvflip_inv_mask;
451 rval = smiapp_write(sensor, SMIAPP_REG_U8_IMAGE_ORIENTATION,
452 orient);
453 if (rval < 0)
454 return rval;
455
456 smiapp_update_mbus_formats(sensor);
457
458 return 0;
459
460 case V4L2_CID_VBLANK:
461 exposure = sensor->exposure->val;
462
463 __smiapp_update_exposure_limits(sensor);
464
465 if (exposure > sensor->exposure->maximum) {
466 sensor->exposure->val = sensor->exposure->maximum;
467 rval = smiapp_set_ctrl(sensor->exposure);
468 if (rval < 0)
469 return rval;
470 }
471
472 return smiapp_write(
473 sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES,
474 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
475 + ctrl->val);
476
477 case V4L2_CID_HBLANK:
478 return smiapp_write(
479 sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK,
480 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
481 + ctrl->val);
482
483 case V4L2_CID_LINK_FREQ:
484 if (sensor->streaming)
485 return -EBUSY;
486
487 return smiapp_pll_update(sensor);
488
489 case V4L2_CID_TEST_PATTERN: {
490 unsigned int i;
491
492 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
493 v4l2_ctrl_activate(
494 sensor->test_data[i],
495 ctrl->val ==
496 V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR);
497
498 return smiapp_write(
499 sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val);
500 }
501
502 case V4L2_CID_TEST_PATTERN_RED:
503 return smiapp_write(
504 sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val);
505
506 case V4L2_CID_TEST_PATTERN_GREENR:
507 return smiapp_write(
508 sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val);
509
510 case V4L2_CID_TEST_PATTERN_BLUE:
511 return smiapp_write(
512 sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val);
513
514 case V4L2_CID_TEST_PATTERN_GREENB:
515 return smiapp_write(
516 sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val);
517
518 case V4L2_CID_PIXEL_RATE:
519 /* For v4l2_ctrl_s_ctrl_int64() used internally. */
520 return 0;
521
522 default:
523 return -EINVAL;
524 }
525 }
526
527 static const struct v4l2_ctrl_ops smiapp_ctrl_ops = {
528 .s_ctrl = smiapp_set_ctrl,
529 };
530
smiapp_init_controls(struct smiapp_sensor * sensor)531 static int smiapp_init_controls(struct smiapp_sensor *sensor)
532 {
533 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
534 int rval;
535
536 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12);
537 if (rval)
538 return rval;
539
540 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
541
542 sensor->analog_gain = v4l2_ctrl_new_std(
543 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
544 V4L2_CID_ANALOGUE_GAIN,
545 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN],
546 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX],
547 max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U),
548 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]);
549
550 /* Exposure limits will be updated soon, use just something here. */
551 sensor->exposure = v4l2_ctrl_new_std(
552 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
553 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
554
555 sensor->hflip = v4l2_ctrl_new_std(
556 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
557 V4L2_CID_HFLIP, 0, 1, 1, 0);
558 sensor->vflip = v4l2_ctrl_new_std(
559 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
560 V4L2_CID_VFLIP, 0, 1, 1, 0);
561
562 sensor->vblank = v4l2_ctrl_new_std(
563 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
564 V4L2_CID_VBLANK, 0, 1, 1, 0);
565
566 if (sensor->vblank)
567 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
568
569 sensor->hblank = v4l2_ctrl_new_std(
570 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
571 V4L2_CID_HBLANK, 0, 1, 1, 0);
572
573 if (sensor->hblank)
574 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
575
576 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
577 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
578 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
579
580 v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler,
581 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN,
582 ARRAY_SIZE(smiapp_test_patterns) - 1,
583 0, 0, smiapp_test_patterns);
584
585 if (sensor->pixel_array->ctrl_handler.error) {
586 dev_err(&client->dev,
587 "pixel array controls initialization failed (%d)\n",
588 sensor->pixel_array->ctrl_handler.error);
589 return sensor->pixel_array->ctrl_handler.error;
590 }
591
592 sensor->pixel_array->sd.ctrl_handler =
593 &sensor->pixel_array->ctrl_handler;
594
595 v4l2_ctrl_cluster(2, &sensor->hflip);
596
597 rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0);
598 if (rval)
599 return rval;
600
601 sensor->src->ctrl_handler.lock = &sensor->mutex;
602
603 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
604 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
605 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
606
607 if (sensor->src->ctrl_handler.error) {
608 dev_err(&client->dev,
609 "src controls initialization failed (%d)\n",
610 sensor->src->ctrl_handler.error);
611 return sensor->src->ctrl_handler.error;
612 }
613
614 sensor->src->sd.ctrl_handler = &sensor->src->ctrl_handler;
615
616 return 0;
617 }
618
619 /*
620 * For controls that require information on available media bus codes
621 * and linke frequencies.
622 */
smiapp_init_late_controls(struct smiapp_sensor * sensor)623 static int smiapp_init_late_controls(struct smiapp_sensor *sensor)
624 {
625 unsigned long *valid_link_freqs = &sensor->valid_link_freqs[
626 sensor->csi_format->compressed - sensor->compressed_min_bpp];
627 unsigned int max, i;
628
629 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) {
630 int max_value = (1 << sensor->csi_format->width) - 1;
631
632 sensor->test_data[i] = v4l2_ctrl_new_std(
633 &sensor->pixel_array->ctrl_handler,
634 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i,
635 0, max_value, 1, max_value);
636 }
637
638 for (max = 0; sensor->hwcfg->op_sys_clock[max + 1]; max++);
639
640 sensor->link_freq = v4l2_ctrl_new_int_menu(
641 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
642 V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs),
643 __ffs(*valid_link_freqs), sensor->hwcfg->op_sys_clock);
644
645 return sensor->src->ctrl_handler.error;
646 }
647
smiapp_free_controls(struct smiapp_sensor * sensor)648 static void smiapp_free_controls(struct smiapp_sensor *sensor)
649 {
650 unsigned int i;
651
652 for (i = 0; i < sensor->ssds_used; i++)
653 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
654 }
655
smiapp_get_limits(struct smiapp_sensor * sensor,int const * limit,unsigned int n)656 static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit,
657 unsigned int n)
658 {
659 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
660 unsigned int i;
661 u32 val;
662 int rval;
663
664 for (i = 0; i < n; i++) {
665 rval = smiapp_read(
666 sensor, smiapp_reg_limits[limit[i]].addr, &val);
667 if (rval)
668 return rval;
669 sensor->limits[limit[i]] = val;
670 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
671 smiapp_reg_limits[limit[i]].addr,
672 smiapp_reg_limits[limit[i]].what, val, val);
673 }
674
675 return 0;
676 }
677
smiapp_get_all_limits(struct smiapp_sensor * sensor)678 static int smiapp_get_all_limits(struct smiapp_sensor *sensor)
679 {
680 unsigned int i;
681 int rval;
682
683 for (i = 0; i < SMIAPP_LIMIT_LAST; i++) {
684 rval = smiapp_get_limits(sensor, &i, 1);
685 if (rval < 0)
686 return rval;
687 }
688
689 if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0)
690 smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16);
691
692 return 0;
693 }
694
smiapp_get_limits_binning(struct smiapp_sensor * sensor)695 static int smiapp_get_limits_binning(struct smiapp_sensor *sensor)
696 {
697 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
698 static u32 const limits[] = {
699 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN,
700 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN,
701 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN,
702 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN,
703 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN,
704 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN,
705 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN,
706 };
707 static u32 const limits_replace[] = {
708 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES,
709 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES,
710 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK,
711 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK,
712 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK,
713 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN,
714 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN,
715 };
716 unsigned int i;
717 int rval;
718
719 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] ==
720 SMIAPP_BINNING_CAPABILITY_NO) {
721 for (i = 0; i < ARRAY_SIZE(limits); i++)
722 sensor->limits[limits[i]] =
723 sensor->limits[limits_replace[i]];
724
725 return 0;
726 }
727
728 rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits));
729 if (rval < 0)
730 return rval;
731
732 /*
733 * Sanity check whether the binning limits are valid. If not,
734 * use the non-binning ones.
735 */
736 if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN]
737 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN]
738 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN])
739 return 0;
740
741 for (i = 0; i < ARRAY_SIZE(limits); i++) {
742 dev_dbg(&client->dev,
743 "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n",
744 smiapp_reg_limits[limits[i]].addr,
745 smiapp_reg_limits[limits[i]].what,
746 sensor->limits[limits_replace[i]],
747 sensor->limits[limits_replace[i]]);
748 sensor->limits[limits[i]] =
749 sensor->limits[limits_replace[i]];
750 }
751
752 return 0;
753 }
754
smiapp_get_mbus_formats(struct smiapp_sensor * sensor)755 static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor)
756 {
757 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
758 struct smiapp_pll *pll = &sensor->pll;
759 u8 compressed_max_bpp = 0;
760 unsigned int type, n;
761 unsigned int i, pixel_order;
762 int rval;
763
764 rval = smiapp_read(
765 sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type);
766 if (rval)
767 return rval;
768
769 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
770
771 rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER,
772 &pixel_order);
773 if (rval)
774 return rval;
775
776 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
777 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
778 return -EINVAL;
779 }
780
781 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
782 pixel_order_str[pixel_order]);
783
784 switch (type) {
785 case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL:
786 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
787 break;
788 case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED:
789 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N;
790 break;
791 default:
792 return -EINVAL;
793 }
794
795 sensor->default_pixel_order = pixel_order;
796 sensor->mbus_frame_fmts = 0;
797
798 for (i = 0; i < n; i++) {
799 unsigned int fmt, j;
800
801 rval = smiapp_read(
802 sensor,
803 SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt);
804 if (rval)
805 return rval;
806
807 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
808 i, fmt >> 8, (u8)fmt);
809
810 for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) {
811 const struct smiapp_csi_data_format *f =
812 &smiapp_csi_data_formats[j];
813
814 if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG)
815 continue;
816
817 if (f->width != fmt >> 8 || f->compressed != (u8)fmt)
818 continue;
819
820 dev_dbg(&client->dev, "jolly good! %d\n", j);
821
822 sensor->default_mbus_frame_fmts |= 1 << j;
823 }
824 }
825
826 /* Figure out which BPP values can be used with which formats. */
827 pll->binning_horizontal = 1;
828 pll->binning_vertical = 1;
829 pll->scale_m = sensor->scale_m;
830
831 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
832 sensor->compressed_min_bpp =
833 min(smiapp_csi_data_formats[i].compressed,
834 sensor->compressed_min_bpp);
835 compressed_max_bpp =
836 max(smiapp_csi_data_formats[i].compressed,
837 compressed_max_bpp);
838 }
839
840 sensor->valid_link_freqs = devm_kcalloc(
841 &client->dev,
842 compressed_max_bpp - sensor->compressed_min_bpp + 1,
843 sizeof(*sensor->valid_link_freqs), GFP_KERNEL);
844 if (!sensor->valid_link_freqs)
845 return -ENOMEM;
846
847 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
848 const struct smiapp_csi_data_format *f =
849 &smiapp_csi_data_formats[i];
850 unsigned long *valid_link_freqs =
851 &sensor->valid_link_freqs[
852 f->compressed - sensor->compressed_min_bpp];
853 unsigned int j;
854
855 if (!(sensor->default_mbus_frame_fmts & 1 << i))
856 continue;
857
858 pll->bits_per_pixel = f->compressed;
859
860 for (j = 0; sensor->hwcfg->op_sys_clock[j]; j++) {
861 pll->link_freq = sensor->hwcfg->op_sys_clock[j];
862
863 rval = smiapp_pll_try(sensor, pll);
864 dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n",
865 pll->link_freq, pll->bits_per_pixel,
866 rval ? "not ok" : "ok");
867 if (rval)
868 continue;
869
870 set_bit(j, valid_link_freqs);
871 }
872
873 if (!*valid_link_freqs) {
874 dev_info(&client->dev,
875 "no valid link frequencies for %u bpp\n",
876 f->compressed);
877 sensor->default_mbus_frame_fmts &= ~BIT(i);
878 continue;
879 }
880
881 if (!sensor->csi_format
882 || f->width > sensor->csi_format->width
883 || (f->width == sensor->csi_format->width
884 && f->compressed > sensor->csi_format->compressed)) {
885 sensor->csi_format = f;
886 sensor->internal_csi_format = f;
887 }
888 }
889
890 if (!sensor->csi_format) {
891 dev_err(&client->dev, "no supported mbus code found\n");
892 return -EINVAL;
893 }
894
895 smiapp_update_mbus_formats(sensor);
896
897 return 0;
898 }
899
smiapp_update_blanking(struct smiapp_sensor * sensor)900 static void smiapp_update_blanking(struct smiapp_sensor *sensor)
901 {
902 struct v4l2_ctrl *vblank = sensor->vblank;
903 struct v4l2_ctrl *hblank = sensor->hblank;
904 int min, max;
905
906 min = max_t(int,
907 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES],
908 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] -
909 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height);
910 max = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] -
911 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
912
913 __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min);
914
915 min = max_t(int,
916 sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] -
917 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width,
918 sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]);
919 max = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] -
920 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
921
922 __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min);
923
924 __smiapp_update_exposure_limits(sensor);
925 }
926
smiapp_update_mode(struct smiapp_sensor * sensor)927 static int smiapp_update_mode(struct smiapp_sensor *sensor)
928 {
929 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
930 unsigned int binning_mode;
931 int rval;
932
933 /* Binning has to be set up here; it affects limits */
934 if (sensor->binning_horizontal == 1 &&
935 sensor->binning_vertical == 1) {
936 binning_mode = 0;
937 } else {
938 u8 binning_type =
939 (sensor->binning_horizontal << 4)
940 | sensor->binning_vertical;
941
942 rval = smiapp_write(
943 sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type);
944 if (rval < 0)
945 return rval;
946
947 binning_mode = 1;
948 }
949 rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode);
950 if (rval < 0)
951 return rval;
952
953 /* Get updated limits due to binning */
954 rval = smiapp_get_limits_binning(sensor);
955 if (rval < 0)
956 return rval;
957
958 rval = smiapp_pll_update(sensor);
959 if (rval < 0)
960 return rval;
961
962 /* Output from pixel array, including blanking */
963 smiapp_update_blanking(sensor);
964
965 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
966 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
967
968 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
969 sensor->pll.pixel_rate_pixel_array /
970 ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
971 + sensor->hblank->val) *
972 (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
973 + sensor->vblank->val) / 100));
974
975 return 0;
976 }
977
978 /*
979 *
980 * SMIA++ NVM handling
981 *
982 */
smiapp_read_nvm(struct smiapp_sensor * sensor,unsigned char * nvm)983 static int smiapp_read_nvm(struct smiapp_sensor *sensor,
984 unsigned char *nvm)
985 {
986 u32 i, s, p, np, v;
987 int rval = 0, rval2;
988
989 np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE;
990 for (p = 0; p < np; p++) {
991 rval = smiapp_write(
992 sensor,
993 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p);
994 if (rval)
995 goto out;
996
997 rval = smiapp_write(sensor,
998 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL,
999 SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN |
1000 SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN);
1001 if (rval)
1002 goto out;
1003
1004 for (i = 1000; i > 0; i--) {
1005 rval = smiapp_read(
1006 sensor,
1007 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s);
1008
1009 if (rval)
1010 goto out;
1011
1012 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
1013 break;
1014
1015 }
1016 if (!i) {
1017 rval = -ETIMEDOUT;
1018 goto out;
1019 }
1020
1021 for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
1022 rval = smiapp_read(
1023 sensor,
1024 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i,
1025 &v);
1026 if (rval)
1027 goto out;
1028
1029 *nvm++ = v;
1030 }
1031 }
1032
1033 out:
1034 rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0);
1035 if (rval < 0)
1036 return rval;
1037 else
1038 return rval2;
1039 }
1040
1041 /*
1042 *
1043 * SMIA++ CCI address control
1044 *
1045 */
smiapp_change_cci_addr(struct smiapp_sensor * sensor)1046 static int smiapp_change_cci_addr(struct smiapp_sensor *sensor)
1047 {
1048 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1049 int rval;
1050 u32 val;
1051
1052 client->addr = sensor->hwcfg->i2c_addr_dfl;
1053
1054 rval = smiapp_write(sensor,
1055 SMIAPP_REG_U8_CCI_ADDRESS_CONTROL,
1056 sensor->hwcfg->i2c_addr_alt << 1);
1057 if (rval)
1058 return rval;
1059
1060 client->addr = sensor->hwcfg->i2c_addr_alt;
1061
1062 /* verify addr change went ok */
1063 rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val);
1064 if (rval)
1065 return rval;
1066
1067 if (val != sensor->hwcfg->i2c_addr_alt << 1)
1068 return -ENODEV;
1069
1070 return 0;
1071 }
1072
1073 /*
1074 *
1075 * SMIA++ Mode Control
1076 *
1077 */
smiapp_setup_flash_strobe(struct smiapp_sensor * sensor)1078 static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor)
1079 {
1080 struct smiapp_flash_strobe_parms *strobe_setup;
1081 unsigned int ext_freq = sensor->hwcfg->ext_clk;
1082 u32 tmp;
1083 u32 strobe_adjustment;
1084 u32 strobe_width_high_rs;
1085 int rval;
1086
1087 strobe_setup = sensor->hwcfg->strobe_setup;
1088
1089 /*
1090 * How to calculate registers related to strobe length. Please
1091 * do not change, or if you do at least know what you're
1092 * doing. :-)
1093 *
1094 * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25
1095 *
1096 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
1097 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
1098 *
1099 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
1100 * flash_strobe_adjustment E N, [1 - 0xff]
1101 *
1102 * The formula above is written as below to keep it on one
1103 * line:
1104 *
1105 * l / 10^6 = w / e * a
1106 *
1107 * Let's mark w * a by x:
1108 *
1109 * x = w * a
1110 *
1111 * Thus, we get:
1112 *
1113 * x = l * e / 10^6
1114 *
1115 * The strobe width must be at least as long as requested,
1116 * thus rounding upwards is needed.
1117 *
1118 * x = (l * e + 10^6 - 1) / 10^6
1119 * -----------------------------
1120 *
1121 * Maximum possible accuracy is wanted at all times. Thus keep
1122 * a as small as possible.
1123 *
1124 * Calculate a, assuming maximum w, with rounding upwards:
1125 *
1126 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1127 * -------------------------------------
1128 *
1129 * Thus, we also get w, with that a, with rounding upwards:
1130 *
1131 * w = (x + a - 1) / a
1132 * -------------------
1133 *
1134 * To get limits:
1135 *
1136 * x E [1, (2^16 - 1) * (2^8 - 1)]
1137 *
1138 * Substituting maximum x to the original formula (with rounding),
1139 * the maximum l is thus
1140 *
1141 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1142 *
1143 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1144 * --------------------------------------------------
1145 *
1146 * flash_strobe_length must be clamped between 1 and
1147 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1148 *
1149 * Then,
1150 *
1151 * flash_strobe_adjustment = ((flash_strobe_length *
1152 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1153 *
1154 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1155 * EXTCLK freq + 10^6 - 1) / 10^6 +
1156 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1157 */
1158 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1159 1000000 + 1, ext_freq);
1160 strobe_setup->strobe_width_high_us =
1161 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1162
1163 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1164 1000000 - 1), 1000000ULL);
1165 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1166 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1167 strobe_adjustment;
1168
1169 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS,
1170 strobe_setup->mode);
1171 if (rval < 0)
1172 goto out;
1173
1174 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT,
1175 strobe_adjustment);
1176 if (rval < 0)
1177 goto out;
1178
1179 rval = smiapp_write(
1180 sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
1181 strobe_width_high_rs);
1182 if (rval < 0)
1183 goto out;
1184
1185 rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL,
1186 strobe_setup->strobe_delay);
1187 if (rval < 0)
1188 goto out;
1189
1190 rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT,
1191 strobe_setup->stobe_start_point);
1192 if (rval < 0)
1193 goto out;
1194
1195 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS,
1196 strobe_setup->trigger);
1197
1198 out:
1199 sensor->hwcfg->strobe_setup->trigger = 0;
1200
1201 return rval;
1202 }
1203
1204 /* -----------------------------------------------------------------------------
1205 * Power management
1206 */
1207
smiapp_power_on(struct device * dev)1208 static int smiapp_power_on(struct device *dev)
1209 {
1210 struct i2c_client *client = to_i2c_client(dev);
1211 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1212 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1213 /*
1214 * The sub-device related to the I2C device is always the
1215 * source one, i.e. ssds[0].
1216 */
1217 struct smiapp_sensor *sensor =
1218 container_of(ssd, struct smiapp_sensor, ssds[0]);
1219 unsigned int sleep;
1220 int rval;
1221
1222 rval = regulator_enable(sensor->vana);
1223 if (rval) {
1224 dev_err(&client->dev, "failed to enable vana regulator\n");
1225 return rval;
1226 }
1227 usleep_range(1000, 1000);
1228
1229 rval = clk_prepare_enable(sensor->ext_clk);
1230 if (rval < 0) {
1231 dev_dbg(&client->dev, "failed to enable xclk\n");
1232 goto out_xclk_fail;
1233 }
1234 usleep_range(1000, 1000);
1235
1236 gpiod_set_value(sensor->xshutdown, 1);
1237
1238 sleep = SMIAPP_RESET_DELAY(sensor->hwcfg->ext_clk);
1239 usleep_range(sleep, sleep);
1240
1241 mutex_lock(&sensor->mutex);
1242
1243 sensor->active = true;
1244
1245 /*
1246 * Failures to respond to the address change command have been noticed.
1247 * Those failures seem to be caused by the sensor requiring a longer
1248 * boot time than advertised. An additional 10ms delay seems to work
1249 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1250 * unnecessary. The failures need to be investigated to find a proper
1251 * fix, and a delay will likely need to be added here if the I2C write
1252 * retry hack is reverted before the root cause of the boot time issue
1253 * is found.
1254 */
1255
1256 if (sensor->hwcfg->i2c_addr_alt) {
1257 rval = smiapp_change_cci_addr(sensor);
1258 if (rval) {
1259 dev_err(&client->dev, "cci address change error\n");
1260 goto out_cci_addr_fail;
1261 }
1262 }
1263
1264 rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
1265 SMIAPP_SOFTWARE_RESET);
1266 if (rval < 0) {
1267 dev_err(&client->dev, "software reset failed\n");
1268 goto out_cci_addr_fail;
1269 }
1270
1271 if (sensor->hwcfg->i2c_addr_alt) {
1272 rval = smiapp_change_cci_addr(sensor);
1273 if (rval) {
1274 dev_err(&client->dev, "cci address change error\n");
1275 goto out_cci_addr_fail;
1276 }
1277 }
1278
1279 rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
1280 SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
1281 if (rval) {
1282 dev_err(&client->dev, "compression mode set failed\n");
1283 goto out_cci_addr_fail;
1284 }
1285
1286 rval = smiapp_write(
1287 sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
1288 sensor->hwcfg->ext_clk / (1000000 / (1 << 8)));
1289 if (rval) {
1290 dev_err(&client->dev, "extclk frequency set failed\n");
1291 goto out_cci_addr_fail;
1292 }
1293
1294 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
1295 sensor->hwcfg->lanes - 1);
1296 if (rval) {
1297 dev_err(&client->dev, "csi lane mode set failed\n");
1298 goto out_cci_addr_fail;
1299 }
1300
1301 rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
1302 SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
1303 if (rval) {
1304 dev_err(&client->dev, "fast standby set failed\n");
1305 goto out_cci_addr_fail;
1306 }
1307
1308 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
1309 sensor->hwcfg->csi_signalling_mode);
1310 if (rval) {
1311 dev_err(&client->dev, "csi signalling mode set failed\n");
1312 goto out_cci_addr_fail;
1313 }
1314
1315 /* DPHY control done by sensor based on requested link rate */
1316 rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
1317 SMIAPP_DPHY_CTRL_UI);
1318 if (rval < 0)
1319 goto out_cci_addr_fail;
1320
1321 rval = smiapp_call_quirk(sensor, post_poweron);
1322 if (rval) {
1323 dev_err(&client->dev, "post_poweron quirks failed\n");
1324 goto out_cci_addr_fail;
1325 }
1326
1327 /* Are we still initialising...? If not, proceed with control setup. */
1328 if (sensor->pixel_array) {
1329 rval = __v4l2_ctrl_handler_setup(
1330 &sensor->pixel_array->ctrl_handler);
1331 if (rval)
1332 goto out_cci_addr_fail;
1333
1334 rval = __v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1335 if (rval)
1336 goto out_cci_addr_fail;
1337
1338 rval = smiapp_update_mode(sensor);
1339 if (rval < 0)
1340 goto out_cci_addr_fail;
1341 }
1342
1343 mutex_unlock(&sensor->mutex);
1344
1345 return 0;
1346
1347 out_cci_addr_fail:
1348 mutex_unlock(&sensor->mutex);
1349 gpiod_set_value(sensor->xshutdown, 0);
1350 clk_disable_unprepare(sensor->ext_clk);
1351
1352 out_xclk_fail:
1353 regulator_disable(sensor->vana);
1354
1355 return rval;
1356 }
1357
smiapp_power_off(struct device * dev)1358 static int smiapp_power_off(struct device *dev)
1359 {
1360 struct i2c_client *client = to_i2c_client(dev);
1361 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
1362 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1363 struct smiapp_sensor *sensor =
1364 container_of(ssd, struct smiapp_sensor, ssds[0]);
1365
1366 mutex_lock(&sensor->mutex);
1367
1368 /*
1369 * Currently power/clock to lens are enable/disabled separately
1370 * but they are essentially the same signals. So if the sensor is
1371 * powered off while the lens is powered on the sensor does not
1372 * really see a power off and next time the cci address change
1373 * will fail. So do a soft reset explicitly here.
1374 */
1375 if (sensor->hwcfg->i2c_addr_alt)
1376 smiapp_write(sensor,
1377 SMIAPP_REG_U8_SOFTWARE_RESET,
1378 SMIAPP_SOFTWARE_RESET);
1379
1380 sensor->active = false;
1381
1382 mutex_unlock(&sensor->mutex);
1383
1384 gpiod_set_value(sensor->xshutdown, 0);
1385 clk_disable_unprepare(sensor->ext_clk);
1386 usleep_range(5000, 5000);
1387 regulator_disable(sensor->vana);
1388 sensor->streaming = false;
1389
1390 return 0;
1391 }
1392
1393 /* -----------------------------------------------------------------------------
1394 * Video stream management
1395 */
1396
smiapp_start_streaming(struct smiapp_sensor * sensor)1397 static int smiapp_start_streaming(struct smiapp_sensor *sensor)
1398 {
1399 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1400 int rval;
1401
1402 mutex_lock(&sensor->mutex);
1403
1404 rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT,
1405 (sensor->csi_format->width << 8) |
1406 sensor->csi_format->compressed);
1407 if (rval)
1408 goto out;
1409
1410 rval = smiapp_pll_configure(sensor);
1411 if (rval)
1412 goto out;
1413
1414 /* Analog crop start coordinates */
1415 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START,
1416 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left);
1417 if (rval < 0)
1418 goto out;
1419
1420 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START,
1421 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top);
1422 if (rval < 0)
1423 goto out;
1424
1425 /* Analog crop end coordinates */
1426 rval = smiapp_write(
1427 sensor, SMIAPP_REG_U16_X_ADDR_END,
1428 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left
1429 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1);
1430 if (rval < 0)
1431 goto out;
1432
1433 rval = smiapp_write(
1434 sensor, SMIAPP_REG_U16_Y_ADDR_END,
1435 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top
1436 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1);
1437 if (rval < 0)
1438 goto out;
1439
1440 /*
1441 * Output from pixel array, including blanking, is set using
1442 * controls below. No need to set here.
1443 */
1444
1445 /* Digital crop */
1446 if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1447 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1448 rval = smiapp_write(
1449 sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET,
1450 sensor->scaler->crop[SMIAPP_PAD_SINK].left);
1451 if (rval < 0)
1452 goto out;
1453
1454 rval = smiapp_write(
1455 sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET,
1456 sensor->scaler->crop[SMIAPP_PAD_SINK].top);
1457 if (rval < 0)
1458 goto out;
1459
1460 rval = smiapp_write(
1461 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH,
1462 sensor->scaler->crop[SMIAPP_PAD_SINK].width);
1463 if (rval < 0)
1464 goto out;
1465
1466 rval = smiapp_write(
1467 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT,
1468 sensor->scaler->crop[SMIAPP_PAD_SINK].height);
1469 if (rval < 0)
1470 goto out;
1471 }
1472
1473 /* Scaling */
1474 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1475 != SMIAPP_SCALING_CAPABILITY_NONE) {
1476 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE,
1477 sensor->scaling_mode);
1478 if (rval < 0)
1479 goto out;
1480
1481 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M,
1482 sensor->scale_m);
1483 if (rval < 0)
1484 goto out;
1485 }
1486
1487 /* Output size from sensor */
1488 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE,
1489 sensor->src->crop[SMIAPP_PAD_SRC].width);
1490 if (rval < 0)
1491 goto out;
1492 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE,
1493 sensor->src->crop[SMIAPP_PAD_SRC].height);
1494 if (rval < 0)
1495 goto out;
1496
1497 if ((sensor->limits[SMIAPP_LIMIT_FLASH_MODE_CAPABILITY] &
1498 (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1499 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) &&
1500 sensor->hwcfg->strobe_setup != NULL &&
1501 sensor->hwcfg->strobe_setup->trigger != 0) {
1502 rval = smiapp_setup_flash_strobe(sensor);
1503 if (rval)
1504 goto out;
1505 }
1506
1507 rval = smiapp_call_quirk(sensor, pre_streamon);
1508 if (rval) {
1509 dev_err(&client->dev, "pre_streamon quirks failed\n");
1510 goto out;
1511 }
1512
1513 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
1514 SMIAPP_MODE_SELECT_STREAMING);
1515
1516 out:
1517 mutex_unlock(&sensor->mutex);
1518
1519 return rval;
1520 }
1521
smiapp_stop_streaming(struct smiapp_sensor * sensor)1522 static int smiapp_stop_streaming(struct smiapp_sensor *sensor)
1523 {
1524 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1525 int rval;
1526
1527 mutex_lock(&sensor->mutex);
1528 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
1529 SMIAPP_MODE_SELECT_SOFTWARE_STANDBY);
1530 if (rval)
1531 goto out;
1532
1533 rval = smiapp_call_quirk(sensor, post_streamoff);
1534 if (rval)
1535 dev_err(&client->dev, "post_streamoff quirks failed\n");
1536
1537 out:
1538 mutex_unlock(&sensor->mutex);
1539 return rval;
1540 }
1541
1542 /* -----------------------------------------------------------------------------
1543 * V4L2 subdev video operations
1544 */
1545
smiapp_set_stream(struct v4l2_subdev * subdev,int enable)1546 static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
1547 {
1548 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1549 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1550 int rval;
1551
1552 if (sensor->streaming == enable)
1553 return 0;
1554
1555 if (enable) {
1556 rval = pm_runtime_get_sync(&client->dev);
1557 if (rval < 0) {
1558 if (rval != -EBUSY && rval != -EAGAIN)
1559 pm_runtime_set_active(&client->dev);
1560 pm_runtime_put(&client->dev);
1561 return rval;
1562 }
1563
1564 sensor->streaming = true;
1565
1566 rval = smiapp_start_streaming(sensor);
1567 if (rval < 0)
1568 sensor->streaming = false;
1569 } else {
1570 rval = smiapp_stop_streaming(sensor);
1571 sensor->streaming = false;
1572 pm_runtime_mark_last_busy(&client->dev);
1573 pm_runtime_put_autosuspend(&client->dev);
1574 }
1575
1576 return rval;
1577 }
1578
smiapp_enum_mbus_code(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)1579 static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev,
1580 struct v4l2_subdev_pad_config *cfg,
1581 struct v4l2_subdev_mbus_code_enum *code)
1582 {
1583 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1584 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1585 unsigned int i;
1586 int idx = -1;
1587 int rval = -EINVAL;
1588
1589 mutex_lock(&sensor->mutex);
1590
1591 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1592 subdev->name, code->pad, code->index);
1593
1594 if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) {
1595 if (code->index)
1596 goto out;
1597
1598 code->code = sensor->internal_csi_format->code;
1599 rval = 0;
1600 goto out;
1601 }
1602
1603 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1604 if (sensor->mbus_frame_fmts & (1 << i))
1605 idx++;
1606
1607 if (idx == code->index) {
1608 code->code = smiapp_csi_data_formats[i].code;
1609 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1610 code->index, i, code->code);
1611 rval = 0;
1612 break;
1613 }
1614 }
1615
1616 out:
1617 mutex_unlock(&sensor->mutex);
1618
1619 return rval;
1620 }
1621
__smiapp_get_mbus_code(struct v4l2_subdev * subdev,unsigned int pad)1622 static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev,
1623 unsigned int pad)
1624 {
1625 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1626
1627 if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC)
1628 return sensor->csi_format->code;
1629 else
1630 return sensor->internal_csi_format->code;
1631 }
1632
__smiapp_get_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1633 static int __smiapp_get_format(struct v4l2_subdev *subdev,
1634 struct v4l2_subdev_pad_config *cfg,
1635 struct v4l2_subdev_format *fmt)
1636 {
1637 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1638
1639 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1640 fmt->format = *v4l2_subdev_get_try_format(subdev, cfg,
1641 fmt->pad);
1642 } else {
1643 struct v4l2_rect *r;
1644
1645 if (fmt->pad == ssd->source_pad)
1646 r = &ssd->crop[ssd->source_pad];
1647 else
1648 r = &ssd->sink_fmt;
1649
1650 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1651 fmt->format.width = r->width;
1652 fmt->format.height = r->height;
1653 fmt->format.field = V4L2_FIELD_NONE;
1654 }
1655
1656 return 0;
1657 }
1658
smiapp_get_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1659 static int smiapp_get_format(struct v4l2_subdev *subdev,
1660 struct v4l2_subdev_pad_config *cfg,
1661 struct v4l2_subdev_format *fmt)
1662 {
1663 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1664 int rval;
1665
1666 mutex_lock(&sensor->mutex);
1667 rval = __smiapp_get_format(subdev, cfg, fmt);
1668 mutex_unlock(&sensor->mutex);
1669
1670 return rval;
1671 }
1672
smiapp_get_crop_compose(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_rect ** crops,struct v4l2_rect ** comps,int which)1673 static void smiapp_get_crop_compose(struct v4l2_subdev *subdev,
1674 struct v4l2_subdev_pad_config *cfg,
1675 struct v4l2_rect **crops,
1676 struct v4l2_rect **comps, int which)
1677 {
1678 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1679 unsigned int i;
1680
1681 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1682 if (crops)
1683 for (i = 0; i < subdev->entity.num_pads; i++)
1684 crops[i] = &ssd->crop[i];
1685 if (comps)
1686 *comps = &ssd->compose;
1687 } else {
1688 if (crops) {
1689 for (i = 0; i < subdev->entity.num_pads; i++) {
1690 crops[i] = v4l2_subdev_get_try_crop(subdev, cfg, i);
1691 BUG_ON(!crops[i]);
1692 }
1693 }
1694 if (comps) {
1695 *comps = v4l2_subdev_get_try_compose(subdev, cfg,
1696 SMIAPP_PAD_SINK);
1697 BUG_ON(!*comps);
1698 }
1699 }
1700 }
1701
1702 /* Changes require propagation only on sink pad. */
smiapp_propagate(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,int which,int target)1703 static void smiapp_propagate(struct v4l2_subdev *subdev,
1704 struct v4l2_subdev_pad_config *cfg, int which,
1705 int target)
1706 {
1707 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1708 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1709 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1710
1711 smiapp_get_crop_compose(subdev, cfg, crops, &comp, which);
1712
1713 switch (target) {
1714 case V4L2_SEL_TGT_CROP:
1715 comp->width = crops[SMIAPP_PAD_SINK]->width;
1716 comp->height = crops[SMIAPP_PAD_SINK]->height;
1717 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1718 if (ssd == sensor->scaler) {
1719 sensor->scale_m =
1720 sensor->limits[
1721 SMIAPP_LIMIT_SCALER_N_MIN];
1722 sensor->scaling_mode =
1723 SMIAPP_SCALING_MODE_NONE;
1724 } else if (ssd == sensor->binner) {
1725 sensor->binning_horizontal = 1;
1726 sensor->binning_vertical = 1;
1727 }
1728 }
1729 /* Fall through */
1730 case V4L2_SEL_TGT_COMPOSE:
1731 *crops[SMIAPP_PAD_SRC] = *comp;
1732 break;
1733 default:
1734 BUG();
1735 }
1736 }
1737
1738 static const struct smiapp_csi_data_format
smiapp_validate_csi_data_format(struct smiapp_sensor * sensor,u32 code)1739 *smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code)
1740 {
1741 unsigned int i;
1742
1743 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1744 if (sensor->mbus_frame_fmts & (1 << i)
1745 && smiapp_csi_data_formats[i].code == code)
1746 return &smiapp_csi_data_formats[i];
1747 }
1748
1749 return sensor->csi_format;
1750 }
1751
smiapp_set_format_source(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1752 static int smiapp_set_format_source(struct v4l2_subdev *subdev,
1753 struct v4l2_subdev_pad_config *cfg,
1754 struct v4l2_subdev_format *fmt)
1755 {
1756 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1757 const struct smiapp_csi_data_format *csi_format,
1758 *old_csi_format = sensor->csi_format;
1759 unsigned long *valid_link_freqs;
1760 u32 code = fmt->format.code;
1761 unsigned int i;
1762 int rval;
1763
1764 rval = __smiapp_get_format(subdev, cfg, fmt);
1765 if (rval)
1766 return rval;
1767
1768 /*
1769 * Media bus code is changeable on src subdev's source pad. On
1770 * other source pads we just get format here.
1771 */
1772 if (subdev != &sensor->src->sd)
1773 return 0;
1774
1775 csi_format = smiapp_validate_csi_data_format(sensor, code);
1776
1777 fmt->format.code = csi_format->code;
1778
1779 if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1780 return 0;
1781
1782 sensor->csi_format = csi_format;
1783
1784 if (csi_format->width != old_csi_format->width)
1785 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
1786 __v4l2_ctrl_modify_range(
1787 sensor->test_data[i], 0,
1788 (1 << csi_format->width) - 1, 1, 0);
1789
1790 if (csi_format->compressed == old_csi_format->compressed)
1791 return 0;
1792
1793 valid_link_freqs =
1794 &sensor->valid_link_freqs[sensor->csi_format->compressed
1795 - sensor->compressed_min_bpp];
1796
1797 __v4l2_ctrl_modify_range(
1798 sensor->link_freq, 0,
1799 __fls(*valid_link_freqs), ~*valid_link_freqs,
1800 __ffs(*valid_link_freqs));
1801
1802 return smiapp_pll_update(sensor);
1803 }
1804
smiapp_set_format(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1805 static int smiapp_set_format(struct v4l2_subdev *subdev,
1806 struct v4l2_subdev_pad_config *cfg,
1807 struct v4l2_subdev_format *fmt)
1808 {
1809 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1810 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1811 struct v4l2_rect *crops[SMIAPP_PADS];
1812
1813 mutex_lock(&sensor->mutex);
1814
1815 if (fmt->pad == ssd->source_pad) {
1816 int rval;
1817
1818 rval = smiapp_set_format_source(subdev, cfg, fmt);
1819
1820 mutex_unlock(&sensor->mutex);
1821
1822 return rval;
1823 }
1824
1825 /* Sink pad. Width and height are changeable here. */
1826 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1827 fmt->format.width &= ~1;
1828 fmt->format.height &= ~1;
1829 fmt->format.field = V4L2_FIELD_NONE;
1830
1831 fmt->format.width =
1832 clamp(fmt->format.width,
1833 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
1834 sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]);
1835 fmt->format.height =
1836 clamp(fmt->format.height,
1837 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
1838 sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]);
1839
1840 smiapp_get_crop_compose(subdev, cfg, crops, NULL, fmt->which);
1841
1842 crops[ssd->sink_pad]->left = 0;
1843 crops[ssd->sink_pad]->top = 0;
1844 crops[ssd->sink_pad]->width = fmt->format.width;
1845 crops[ssd->sink_pad]->height = fmt->format.height;
1846 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1847 ssd->sink_fmt = *crops[ssd->sink_pad];
1848 smiapp_propagate(subdev, cfg, fmt->which,
1849 V4L2_SEL_TGT_CROP);
1850
1851 mutex_unlock(&sensor->mutex);
1852
1853 return 0;
1854 }
1855
1856 /*
1857 * Calculate goodness of scaled image size compared to expected image
1858 * size and flags provided.
1859 */
1860 #define SCALING_GOODNESS 100000
1861 #define SCALING_GOODNESS_EXTREME 100000000
scaling_goodness(struct v4l2_subdev * subdev,int w,int ask_w,int h,int ask_h,u32 flags)1862 static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
1863 int h, int ask_h, u32 flags)
1864 {
1865 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1866 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1867 int val = 0;
1868
1869 w &= ~1;
1870 ask_w &= ~1;
1871 h &= ~1;
1872 ask_h &= ~1;
1873
1874 if (flags & V4L2_SEL_FLAG_GE) {
1875 if (w < ask_w)
1876 val -= SCALING_GOODNESS;
1877 if (h < ask_h)
1878 val -= SCALING_GOODNESS;
1879 }
1880
1881 if (flags & V4L2_SEL_FLAG_LE) {
1882 if (w > ask_w)
1883 val -= SCALING_GOODNESS;
1884 if (h > ask_h)
1885 val -= SCALING_GOODNESS;
1886 }
1887
1888 val -= abs(w - ask_w);
1889 val -= abs(h - ask_h);
1890
1891 if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE])
1892 val -= SCALING_GOODNESS_EXTREME;
1893
1894 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
1895 w, ask_w, h, ask_h, val);
1896
1897 return val;
1898 }
1899
smiapp_set_compose_binner(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel,struct v4l2_rect ** crops,struct v4l2_rect * comp)1900 static void smiapp_set_compose_binner(struct v4l2_subdev *subdev,
1901 struct v4l2_subdev_pad_config *cfg,
1902 struct v4l2_subdev_selection *sel,
1903 struct v4l2_rect **crops,
1904 struct v4l2_rect *comp)
1905 {
1906 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1907 unsigned int i;
1908 unsigned int binh = 1, binv = 1;
1909 int best = scaling_goodness(
1910 subdev,
1911 crops[SMIAPP_PAD_SINK]->width, sel->r.width,
1912 crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags);
1913
1914 for (i = 0; i < sensor->nbinning_subtypes; i++) {
1915 int this = scaling_goodness(
1916 subdev,
1917 crops[SMIAPP_PAD_SINK]->width
1918 / sensor->binning_subtypes[i].horizontal,
1919 sel->r.width,
1920 crops[SMIAPP_PAD_SINK]->height
1921 / sensor->binning_subtypes[i].vertical,
1922 sel->r.height, sel->flags);
1923
1924 if (this > best) {
1925 binh = sensor->binning_subtypes[i].horizontal;
1926 binv = sensor->binning_subtypes[i].vertical;
1927 best = this;
1928 }
1929 }
1930 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1931 sensor->binning_vertical = binv;
1932 sensor->binning_horizontal = binh;
1933 }
1934
1935 sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1;
1936 sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1;
1937 }
1938
1939 /*
1940 * Calculate best scaling ratio and mode for given output resolution.
1941 *
1942 * Try all of these: horizontal ratio, vertical ratio and smallest
1943 * size possible (horizontally).
1944 *
1945 * Also try whether horizontal scaler or full scaler gives a better
1946 * result.
1947 */
smiapp_set_compose_scaler(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel,struct v4l2_rect ** crops,struct v4l2_rect * comp)1948 static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev,
1949 struct v4l2_subdev_pad_config *cfg,
1950 struct v4l2_subdev_selection *sel,
1951 struct v4l2_rect **crops,
1952 struct v4l2_rect *comp)
1953 {
1954 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1955 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1956 u32 min, max, a, b, max_m;
1957 u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
1958 int mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1959 u32 try[4];
1960 u32 ntry = 0;
1961 unsigned int i;
1962 int best = INT_MIN;
1963
1964 sel->r.width = min_t(unsigned int, sel->r.width,
1965 crops[SMIAPP_PAD_SINK]->width);
1966 sel->r.height = min_t(unsigned int, sel->r.height,
1967 crops[SMIAPP_PAD_SINK]->height);
1968
1969 a = crops[SMIAPP_PAD_SINK]->width
1970 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width;
1971 b = crops[SMIAPP_PAD_SINK]->height
1972 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height;
1973 max_m = crops[SMIAPP_PAD_SINK]->width
1974 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]
1975 / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE];
1976
1977 a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1978 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1979 b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1980 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1981 max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1982 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1983
1984 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
1985
1986 min = min(max_m, min(a, b));
1987 max = min(max_m, max(a, b));
1988
1989 try[ntry] = min;
1990 ntry++;
1991 if (min != max) {
1992 try[ntry] = max;
1993 ntry++;
1994 }
1995 if (max != max_m) {
1996 try[ntry] = min + 1;
1997 ntry++;
1998 if (min != max) {
1999 try[ntry] = max + 1;
2000 ntry++;
2001 }
2002 }
2003
2004 for (i = 0; i < ntry; i++) {
2005 int this = scaling_goodness(
2006 subdev,
2007 crops[SMIAPP_PAD_SINK]->width
2008 / try[i]
2009 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2010 sel->r.width,
2011 crops[SMIAPP_PAD_SINK]->height,
2012 sel->r.height,
2013 sel->flags);
2014
2015 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
2016
2017 if (this > best) {
2018 scale_m = try[i];
2019 mode = SMIAPP_SCALING_MODE_HORIZONTAL;
2020 best = this;
2021 }
2022
2023 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2024 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2025 continue;
2026
2027 this = scaling_goodness(
2028 subdev, crops[SMIAPP_PAD_SINK]->width
2029 / try[i]
2030 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2031 sel->r.width,
2032 crops[SMIAPP_PAD_SINK]->height
2033 / try[i]
2034 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2035 sel->r.height,
2036 sel->flags);
2037
2038 if (this > best) {
2039 scale_m = try[i];
2040 mode = SMIAPP_SCALING_MODE_BOTH;
2041 best = this;
2042 }
2043 }
2044
2045 sel->r.width =
2046 (crops[SMIAPP_PAD_SINK]->width
2047 / scale_m
2048 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1;
2049 if (mode == SMIAPP_SCALING_MODE_BOTH)
2050 sel->r.height =
2051 (crops[SMIAPP_PAD_SINK]->height
2052 / scale_m
2053 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN])
2054 & ~1;
2055 else
2056 sel->r.height = crops[SMIAPP_PAD_SINK]->height;
2057
2058 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2059 sensor->scale_m = scale_m;
2060 sensor->scaling_mode = mode;
2061 }
2062 }
2063 /* We're only called on source pads. This function sets scaling. */
smiapp_set_compose(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2064 static int smiapp_set_compose(struct v4l2_subdev *subdev,
2065 struct v4l2_subdev_pad_config *cfg,
2066 struct v4l2_subdev_selection *sel)
2067 {
2068 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2069 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2070 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2071
2072 smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2073
2074 sel->r.top = 0;
2075 sel->r.left = 0;
2076
2077 if (ssd == sensor->binner)
2078 smiapp_set_compose_binner(subdev, cfg, sel, crops, comp);
2079 else
2080 smiapp_set_compose_scaler(subdev, cfg, sel, crops, comp);
2081
2082 *comp = sel->r;
2083 smiapp_propagate(subdev, cfg, sel->which, V4L2_SEL_TGT_COMPOSE);
2084
2085 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
2086 return smiapp_update_mode(sensor);
2087
2088 return 0;
2089 }
2090
__smiapp_sel_supported(struct v4l2_subdev * subdev,struct v4l2_subdev_selection * sel)2091 static int __smiapp_sel_supported(struct v4l2_subdev *subdev,
2092 struct v4l2_subdev_selection *sel)
2093 {
2094 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2095 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2096
2097 /* We only implement crop in three places. */
2098 switch (sel->target) {
2099 case V4L2_SEL_TGT_CROP:
2100 case V4L2_SEL_TGT_CROP_BOUNDS:
2101 if (ssd == sensor->pixel_array
2102 && sel->pad == SMIAPP_PA_PAD_SRC)
2103 return 0;
2104 if (ssd == sensor->src
2105 && sel->pad == SMIAPP_PAD_SRC)
2106 return 0;
2107 if (ssd == sensor->scaler
2108 && sel->pad == SMIAPP_PAD_SINK
2109 && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2110 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
2111 return 0;
2112 return -EINVAL;
2113 case V4L2_SEL_TGT_NATIVE_SIZE:
2114 if (ssd == sensor->pixel_array
2115 && sel->pad == SMIAPP_PA_PAD_SRC)
2116 return 0;
2117 return -EINVAL;
2118 case V4L2_SEL_TGT_COMPOSE:
2119 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2120 if (sel->pad == ssd->source_pad)
2121 return -EINVAL;
2122 if (ssd == sensor->binner)
2123 return 0;
2124 if (ssd == sensor->scaler
2125 && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2126 != SMIAPP_SCALING_CAPABILITY_NONE)
2127 return 0;
2128 /* Fall through */
2129 default:
2130 return -EINVAL;
2131 }
2132 }
2133
smiapp_set_crop(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2134 static int smiapp_set_crop(struct v4l2_subdev *subdev,
2135 struct v4l2_subdev_pad_config *cfg,
2136 struct v4l2_subdev_selection *sel)
2137 {
2138 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2139 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2140 struct v4l2_rect *src_size, *crops[SMIAPP_PADS];
2141 struct v4l2_rect _r;
2142
2143 smiapp_get_crop_compose(subdev, cfg, crops, NULL, sel->which);
2144
2145 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2146 if (sel->pad == ssd->sink_pad)
2147 src_size = &ssd->sink_fmt;
2148 else
2149 src_size = &ssd->compose;
2150 } else {
2151 if (sel->pad == ssd->sink_pad) {
2152 _r.left = 0;
2153 _r.top = 0;
2154 _r.width = v4l2_subdev_get_try_format(subdev, cfg, sel->pad)
2155 ->width;
2156 _r.height = v4l2_subdev_get_try_format(subdev, cfg, sel->pad)
2157 ->height;
2158 src_size = &_r;
2159 } else {
2160 src_size = v4l2_subdev_get_try_compose(
2161 subdev, cfg, ssd->sink_pad);
2162 }
2163 }
2164
2165 if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) {
2166 sel->r.left = 0;
2167 sel->r.top = 0;
2168 }
2169
2170 sel->r.width = min(sel->r.width, src_size->width);
2171 sel->r.height = min(sel->r.height, src_size->height);
2172
2173 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2174 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
2175
2176 *crops[sel->pad] = sel->r;
2177
2178 if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK)
2179 smiapp_propagate(subdev, cfg, sel->which,
2180 V4L2_SEL_TGT_CROP);
2181
2182 return 0;
2183 }
2184
smiapp_get_native_size(struct smiapp_subdev * ssd,struct v4l2_rect * r)2185 static void smiapp_get_native_size(struct smiapp_subdev *ssd,
2186 struct v4l2_rect *r)
2187 {
2188 r->top = 0;
2189 r->left = 0;
2190 r->width = ssd->sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2191 r->height = ssd->sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2192 }
2193
__smiapp_get_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2194 static int __smiapp_get_selection(struct v4l2_subdev *subdev,
2195 struct v4l2_subdev_pad_config *cfg,
2196 struct v4l2_subdev_selection *sel)
2197 {
2198 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2199 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2200 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2201 struct v4l2_rect sink_fmt;
2202 int ret;
2203
2204 ret = __smiapp_sel_supported(subdev, sel);
2205 if (ret)
2206 return ret;
2207
2208 smiapp_get_crop_compose(subdev, cfg, crops, &comp, sel->which);
2209
2210 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2211 sink_fmt = ssd->sink_fmt;
2212 } else {
2213 struct v4l2_mbus_framefmt *fmt =
2214 v4l2_subdev_get_try_format(subdev, cfg, ssd->sink_pad);
2215
2216 sink_fmt.left = 0;
2217 sink_fmt.top = 0;
2218 sink_fmt.width = fmt->width;
2219 sink_fmt.height = fmt->height;
2220 }
2221
2222 switch (sel->target) {
2223 case V4L2_SEL_TGT_CROP_BOUNDS:
2224 case V4L2_SEL_TGT_NATIVE_SIZE:
2225 if (ssd == sensor->pixel_array)
2226 smiapp_get_native_size(ssd, &sel->r);
2227 else if (sel->pad == ssd->sink_pad)
2228 sel->r = sink_fmt;
2229 else
2230 sel->r = *comp;
2231 break;
2232 case V4L2_SEL_TGT_CROP:
2233 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
2234 sel->r = *crops[sel->pad];
2235 break;
2236 case V4L2_SEL_TGT_COMPOSE:
2237 sel->r = *comp;
2238 break;
2239 }
2240
2241 return 0;
2242 }
2243
smiapp_get_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2244 static int smiapp_get_selection(struct v4l2_subdev *subdev,
2245 struct v4l2_subdev_pad_config *cfg,
2246 struct v4l2_subdev_selection *sel)
2247 {
2248 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2249 int rval;
2250
2251 mutex_lock(&sensor->mutex);
2252 rval = __smiapp_get_selection(subdev, cfg, sel);
2253 mutex_unlock(&sensor->mutex);
2254
2255 return rval;
2256 }
smiapp_set_selection(struct v4l2_subdev * subdev,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_selection * sel)2257 static int smiapp_set_selection(struct v4l2_subdev *subdev,
2258 struct v4l2_subdev_pad_config *cfg,
2259 struct v4l2_subdev_selection *sel)
2260 {
2261 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2262 int ret;
2263
2264 ret = __smiapp_sel_supported(subdev, sel);
2265 if (ret)
2266 return ret;
2267
2268 mutex_lock(&sensor->mutex);
2269
2270 sel->r.left = max(0, sel->r.left & ~1);
2271 sel->r.top = max(0, sel->r.top & ~1);
2272 sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
2273 sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
2274
2275 sel->r.width = max_t(unsigned int,
2276 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
2277 sel->r.width);
2278 sel->r.height = max_t(unsigned int,
2279 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
2280 sel->r.height);
2281
2282 switch (sel->target) {
2283 case V4L2_SEL_TGT_CROP:
2284 ret = smiapp_set_crop(subdev, cfg, sel);
2285 break;
2286 case V4L2_SEL_TGT_COMPOSE:
2287 ret = smiapp_set_compose(subdev, cfg, sel);
2288 break;
2289 default:
2290 ret = -EINVAL;
2291 }
2292
2293 mutex_unlock(&sensor->mutex);
2294 return ret;
2295 }
2296
smiapp_get_skip_frames(struct v4l2_subdev * subdev,u32 * frames)2297 static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2298 {
2299 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2300
2301 *frames = sensor->frame_skip;
2302 return 0;
2303 }
2304
smiapp_get_skip_top_lines(struct v4l2_subdev * subdev,u32 * lines)2305 static int smiapp_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines)
2306 {
2307 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2308
2309 *lines = sensor->image_start;
2310
2311 return 0;
2312 }
2313
2314 /* -----------------------------------------------------------------------------
2315 * sysfs attributes
2316 */
2317
2318 static ssize_t
smiapp_sysfs_nvm_read(struct device * dev,struct device_attribute * attr,char * buf)2319 smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2320 char *buf)
2321 {
2322 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2323 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2324 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2325 unsigned int nbytes;
2326
2327 if (!sensor->dev_init_done)
2328 return -EBUSY;
2329
2330 if (!sensor->nvm_size) {
2331 int rval;
2332
2333 /* NVM not read yet - read it now */
2334 sensor->nvm_size = sensor->hwcfg->nvm_size;
2335
2336 rval = pm_runtime_get_sync(&client->dev);
2337 if (rval < 0) {
2338 if (rval != -EBUSY && rval != -EAGAIN)
2339 pm_runtime_set_active(&client->dev);
2340 pm_runtime_put(&client->dev);
2341 return -ENODEV;
2342 }
2343
2344 if (smiapp_read_nvm(sensor, sensor->nvm)) {
2345 dev_err(&client->dev, "nvm read failed\n");
2346 return -ENODEV;
2347 }
2348
2349 pm_runtime_mark_last_busy(&client->dev);
2350 pm_runtime_put_autosuspend(&client->dev);
2351 }
2352 /*
2353 * NVM is still way below a PAGE_SIZE, so we can safely
2354 * assume this for now.
2355 */
2356 nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE);
2357 memcpy(buf, sensor->nvm, nbytes);
2358
2359 return nbytes;
2360 }
2361 static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL);
2362
2363 static ssize_t
smiapp_sysfs_ident_read(struct device * dev,struct device_attribute * attr,char * buf)2364 smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
2365 char *buf)
2366 {
2367 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2368 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2369 struct smiapp_module_info *minfo = &sensor->minfo;
2370
2371 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2372 minfo->manufacturer_id, minfo->model_id,
2373 minfo->revision_number_major) + 1;
2374 }
2375
2376 static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL);
2377
2378 /* -----------------------------------------------------------------------------
2379 * V4L2 subdev core operations
2380 */
2381
smiapp_identify_module(struct smiapp_sensor * sensor)2382 static int smiapp_identify_module(struct smiapp_sensor *sensor)
2383 {
2384 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2385 struct smiapp_module_info *minfo = &sensor->minfo;
2386 unsigned int i;
2387 int rval = 0;
2388
2389 minfo->name = SMIAPP_NAME;
2390
2391 /* Module info */
2392 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
2393 &minfo->manufacturer_id);
2394 if (!rval)
2395 rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
2396 &minfo->model_id);
2397 if (!rval)
2398 rval = smiapp_read_8only(sensor,
2399 SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
2400 &minfo->revision_number_major);
2401 if (!rval)
2402 rval = smiapp_read_8only(sensor,
2403 SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
2404 &minfo->revision_number_minor);
2405 if (!rval)
2406 rval = smiapp_read_8only(sensor,
2407 SMIAPP_REG_U8_MODULE_DATE_YEAR,
2408 &minfo->module_year);
2409 if (!rval)
2410 rval = smiapp_read_8only(sensor,
2411 SMIAPP_REG_U8_MODULE_DATE_MONTH,
2412 &minfo->module_month);
2413 if (!rval)
2414 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
2415 &minfo->module_day);
2416
2417 /* Sensor info */
2418 if (!rval)
2419 rval = smiapp_read_8only(sensor,
2420 SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
2421 &minfo->sensor_manufacturer_id);
2422 if (!rval)
2423 rval = smiapp_read_8only(sensor,
2424 SMIAPP_REG_U16_SENSOR_MODEL_ID,
2425 &minfo->sensor_model_id);
2426 if (!rval)
2427 rval = smiapp_read_8only(sensor,
2428 SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
2429 &minfo->sensor_revision_number);
2430 if (!rval)
2431 rval = smiapp_read_8only(sensor,
2432 SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
2433 &minfo->sensor_firmware_version);
2434
2435 /* SMIA */
2436 if (!rval)
2437 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2438 &minfo->smia_version);
2439 if (!rval)
2440 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2441 &minfo->smiapp_version);
2442
2443 if (rval) {
2444 dev_err(&client->dev, "sensor detection failed\n");
2445 return -ENODEV;
2446 }
2447
2448 dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n",
2449 minfo->manufacturer_id, minfo->model_id);
2450
2451 dev_dbg(&client->dev,
2452 "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n",
2453 minfo->revision_number_major, minfo->revision_number_minor,
2454 minfo->module_year, minfo->module_month, minfo->module_day);
2455
2456 dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n",
2457 minfo->sensor_manufacturer_id, minfo->sensor_model_id);
2458
2459 dev_dbg(&client->dev,
2460 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2461 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2462
2463 dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n",
2464 minfo->smia_version, minfo->smiapp_version);
2465
2466 /*
2467 * Some modules have bad data in the lvalues below. Hope the
2468 * rvalues have better stuff. The lvalues are module
2469 * parameters whereas the rvalues are sensor parameters.
2470 */
2471 if (!minfo->manufacturer_id && !minfo->model_id) {
2472 minfo->manufacturer_id = minfo->sensor_manufacturer_id;
2473 minfo->model_id = minfo->sensor_model_id;
2474 minfo->revision_number_major = minfo->sensor_revision_number;
2475 }
2476
2477 for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) {
2478 if (smiapp_module_idents[i].manufacturer_id
2479 != minfo->manufacturer_id)
2480 continue;
2481 if (smiapp_module_idents[i].model_id != minfo->model_id)
2482 continue;
2483 if (smiapp_module_idents[i].flags
2484 & SMIAPP_MODULE_IDENT_FLAG_REV_LE) {
2485 if (smiapp_module_idents[i].revision_number_major
2486 < minfo->revision_number_major)
2487 continue;
2488 } else {
2489 if (smiapp_module_idents[i].revision_number_major
2490 != minfo->revision_number_major)
2491 continue;
2492 }
2493
2494 minfo->name = smiapp_module_idents[i].name;
2495 minfo->quirk = smiapp_module_idents[i].quirk;
2496 break;
2497 }
2498
2499 if (i >= ARRAY_SIZE(smiapp_module_idents))
2500 dev_warn(&client->dev,
2501 "no quirks for this module; let's hope it's fully compliant\n");
2502
2503 dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n",
2504 minfo->name, minfo->manufacturer_id, minfo->model_id,
2505 minfo->revision_number_major);
2506
2507 return 0;
2508 }
2509
2510 static const struct v4l2_subdev_ops smiapp_ops;
2511 static const struct v4l2_subdev_internal_ops smiapp_internal_ops;
2512 static const struct media_entity_operations smiapp_entity_ops;
2513
smiapp_register_subdev(struct smiapp_sensor * sensor,struct smiapp_subdev * ssd,struct smiapp_subdev * sink_ssd,u16 source_pad,u16 sink_pad,u32 link_flags)2514 static int smiapp_register_subdev(struct smiapp_sensor *sensor,
2515 struct smiapp_subdev *ssd,
2516 struct smiapp_subdev *sink_ssd,
2517 u16 source_pad, u16 sink_pad, u32 link_flags)
2518 {
2519 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2520 int rval;
2521
2522 if (!sink_ssd)
2523 return 0;
2524
2525 rval = media_entity_pads_init(&ssd->sd.entity,
2526 ssd->npads, ssd->pads);
2527 if (rval) {
2528 dev_err(&client->dev,
2529 "media_entity_pads_init failed\n");
2530 return rval;
2531 }
2532
2533 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev,
2534 &ssd->sd);
2535 if (rval) {
2536 dev_err(&client->dev,
2537 "v4l2_device_register_subdev failed\n");
2538 return rval;
2539 }
2540
2541 rval = media_create_pad_link(&ssd->sd.entity, source_pad,
2542 &sink_ssd->sd.entity, sink_pad,
2543 link_flags);
2544 if (rval) {
2545 dev_err(&client->dev,
2546 "media_create_pad_link failed\n");
2547 v4l2_device_unregister_subdev(&ssd->sd);
2548 return rval;
2549 }
2550
2551 return 0;
2552 }
2553
smiapp_unregistered(struct v4l2_subdev * subdev)2554 static void smiapp_unregistered(struct v4l2_subdev *subdev)
2555 {
2556 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2557 unsigned int i;
2558
2559 for (i = 1; i < sensor->ssds_used; i++)
2560 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2561 }
2562
smiapp_registered(struct v4l2_subdev * subdev)2563 static int smiapp_registered(struct v4l2_subdev *subdev)
2564 {
2565 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2566 int rval;
2567
2568 if (sensor->scaler) {
2569 rval = smiapp_register_subdev(
2570 sensor, sensor->binner, sensor->scaler,
2571 SMIAPP_PAD_SRC, SMIAPP_PAD_SINK,
2572 MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
2573 if (rval < 0)
2574 return rval;
2575 }
2576
2577 rval = smiapp_register_subdev(
2578 sensor, sensor->pixel_array, sensor->binner,
2579 SMIAPP_PA_PAD_SRC, SMIAPP_PAD_SINK,
2580 MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE);
2581 if (rval)
2582 goto out_err;
2583
2584 return 0;
2585
2586 out_err:
2587 smiapp_unregistered(subdev);
2588
2589 return rval;
2590 }
2591
smiapp_cleanup(struct smiapp_sensor * sensor)2592 static void smiapp_cleanup(struct smiapp_sensor *sensor)
2593 {
2594 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2595
2596 device_remove_file(&client->dev, &dev_attr_nvm);
2597 device_remove_file(&client->dev, &dev_attr_ident);
2598
2599 smiapp_free_controls(sensor);
2600 }
2601
smiapp_create_subdev(struct smiapp_sensor * sensor,struct smiapp_subdev * ssd,const char * name,unsigned short num_pads)2602 static void smiapp_create_subdev(struct smiapp_sensor *sensor,
2603 struct smiapp_subdev *ssd, const char *name,
2604 unsigned short num_pads)
2605 {
2606 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2607
2608 if (!ssd)
2609 return;
2610
2611 if (ssd != sensor->src)
2612 v4l2_subdev_init(&ssd->sd, &smiapp_ops);
2613
2614 ssd->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2615 ssd->sensor = sensor;
2616
2617 ssd->npads = num_pads;
2618 ssd->source_pad = num_pads - 1;
2619
2620 snprintf(ssd->sd.name,
2621 sizeof(ssd->sd.name), "%s %s %d-%4.4x", sensor->minfo.name,
2622 name, i2c_adapter_id(client->adapter), client->addr);
2623
2624 smiapp_get_native_size(ssd, &ssd->sink_fmt);
2625
2626 ssd->compose.width = ssd->sink_fmt.width;
2627 ssd->compose.height = ssd->sink_fmt.height;
2628 ssd->crop[ssd->source_pad] = ssd->compose;
2629 ssd->pads[ssd->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2630 if (ssd != sensor->pixel_array) {
2631 ssd->crop[ssd->sink_pad] = ssd->compose;
2632 ssd->pads[ssd->sink_pad].flags = MEDIA_PAD_FL_SINK;
2633 }
2634
2635 ssd->sd.entity.ops = &smiapp_entity_ops;
2636
2637 if (ssd == sensor->src)
2638 return;
2639
2640 ssd->sd.internal_ops = &smiapp_internal_ops;
2641 ssd->sd.owner = THIS_MODULE;
2642 ssd->sd.dev = &client->dev;
2643 v4l2_set_subdevdata(&ssd->sd, client);
2644 }
2645
smiapp_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)2646 static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2647 {
2648 struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
2649 struct smiapp_sensor *sensor = ssd->sensor;
2650 unsigned int i;
2651
2652 mutex_lock(&sensor->mutex);
2653
2654 for (i = 0; i < ssd->npads; i++) {
2655 struct v4l2_mbus_framefmt *try_fmt =
2656 v4l2_subdev_get_try_format(sd, fh->pad, i);
2657 struct v4l2_rect *try_crop =
2658 v4l2_subdev_get_try_crop(sd, fh->pad, i);
2659 struct v4l2_rect *try_comp;
2660
2661 smiapp_get_native_size(ssd, try_crop);
2662
2663 try_fmt->width = try_crop->width;
2664 try_fmt->height = try_crop->height;
2665 try_fmt->code = sensor->internal_csi_format->code;
2666 try_fmt->field = V4L2_FIELD_NONE;
2667
2668 if (ssd != sensor->pixel_array)
2669 continue;
2670
2671 try_comp = v4l2_subdev_get_try_compose(sd, fh->pad, i);
2672 *try_comp = *try_crop;
2673 }
2674
2675 mutex_unlock(&sensor->mutex);
2676
2677 return 0;
2678 }
2679
2680 static const struct v4l2_subdev_video_ops smiapp_video_ops = {
2681 .s_stream = smiapp_set_stream,
2682 };
2683
2684 static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
2685 .enum_mbus_code = smiapp_enum_mbus_code,
2686 .get_fmt = smiapp_get_format,
2687 .set_fmt = smiapp_set_format,
2688 .get_selection = smiapp_get_selection,
2689 .set_selection = smiapp_set_selection,
2690 };
2691
2692 static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
2693 .g_skip_frames = smiapp_get_skip_frames,
2694 .g_skip_top_lines = smiapp_get_skip_top_lines,
2695 };
2696
2697 static const struct v4l2_subdev_ops smiapp_ops = {
2698 .video = &smiapp_video_ops,
2699 .pad = &smiapp_pad_ops,
2700 .sensor = &smiapp_sensor_ops,
2701 };
2702
2703 static const struct media_entity_operations smiapp_entity_ops = {
2704 .link_validate = v4l2_subdev_link_validate,
2705 };
2706
2707 static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
2708 .registered = smiapp_registered,
2709 .unregistered = smiapp_unregistered,
2710 .open = smiapp_open,
2711 };
2712
2713 static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
2714 .open = smiapp_open,
2715 };
2716
2717 /* -----------------------------------------------------------------------------
2718 * I2C Driver
2719 */
2720
smiapp_suspend(struct device * dev)2721 static int __maybe_unused smiapp_suspend(struct device *dev)
2722 {
2723 struct i2c_client *client = to_i2c_client(dev);
2724 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2725 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2726 bool streaming = sensor->streaming;
2727 int rval;
2728
2729 rval = pm_runtime_get_sync(dev);
2730 if (rval < 0) {
2731 if (rval != -EBUSY && rval != -EAGAIN)
2732 pm_runtime_set_active(&client->dev);
2733 pm_runtime_put(dev);
2734 return -EAGAIN;
2735 }
2736
2737 if (sensor->streaming)
2738 smiapp_stop_streaming(sensor);
2739
2740 /* save state for resume */
2741 sensor->streaming = streaming;
2742
2743 return 0;
2744 }
2745
smiapp_resume(struct device * dev)2746 static int __maybe_unused smiapp_resume(struct device *dev)
2747 {
2748 struct i2c_client *client = to_i2c_client(dev);
2749 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2750 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2751 int rval = 0;
2752
2753 pm_runtime_put(dev);
2754
2755 if (sensor->streaming)
2756 rval = smiapp_start_streaming(sensor);
2757
2758 return rval;
2759 }
2760
smiapp_get_hwconfig(struct device * dev)2761 static struct smiapp_hwconfig *smiapp_get_hwconfig(struct device *dev)
2762 {
2763 struct smiapp_hwconfig *hwcfg;
2764 struct v4l2_fwnode_endpoint *bus_cfg;
2765 struct fwnode_handle *ep;
2766 struct fwnode_handle *fwnode = dev_fwnode(dev);
2767 u32 rotation;
2768 int i;
2769 int rval;
2770
2771 if (!fwnode)
2772 return dev->platform_data;
2773
2774 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
2775 if (!ep)
2776 return NULL;
2777
2778 bus_cfg = v4l2_fwnode_endpoint_alloc_parse(ep);
2779 if (IS_ERR(bus_cfg))
2780 goto out_err;
2781
2782 hwcfg = devm_kzalloc(dev, sizeof(*hwcfg), GFP_KERNEL);
2783 if (!hwcfg)
2784 goto out_err;
2785
2786 switch (bus_cfg->bus_type) {
2787 case V4L2_MBUS_CSI2:
2788 hwcfg->csi_signalling_mode = SMIAPP_CSI_SIGNALLING_MODE_CSI2;
2789 hwcfg->lanes = bus_cfg->bus.mipi_csi2.num_data_lanes;
2790 break;
2791 case V4L2_MBUS_CCP2:
2792 hwcfg->csi_signalling_mode = (bus_cfg->bus.mipi_csi1.strobe) ?
2793 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_STROBE :
2794 SMIAPP_CSI_SIGNALLING_MODE_CCP2_DATA_CLOCK;
2795 hwcfg->lanes = 1;
2796 break;
2797 default:
2798 dev_err(dev, "unsupported bus %u\n", bus_cfg->bus_type);
2799 goto out_err;
2800 }
2801
2802 dev_dbg(dev, "lanes %u\n", hwcfg->lanes);
2803
2804 rval = fwnode_property_read_u32(fwnode, "rotation", &rotation);
2805 if (!rval) {
2806 switch (rotation) {
2807 case 180:
2808 hwcfg->module_board_orient =
2809 SMIAPP_MODULE_BOARD_ORIENT_180;
2810 /* Fall through */
2811 case 0:
2812 break;
2813 default:
2814 dev_err(dev, "invalid rotation %u\n", rotation);
2815 goto out_err;
2816 }
2817 }
2818
2819 /* NVM size is not mandatory */
2820 fwnode_property_read_u32(fwnode, "nokia,nvm-size", &hwcfg->nvm_size);
2821
2822 rval = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
2823 &hwcfg->ext_clk);
2824 if (rval)
2825 dev_info(dev, "can't get clock-frequency\n");
2826
2827 dev_dbg(dev, "nvm %d, clk %d, mode %d\n",
2828 hwcfg->nvm_size, hwcfg->ext_clk, hwcfg->csi_signalling_mode);
2829
2830 if (!bus_cfg->nr_of_link_frequencies) {
2831 dev_warn(dev, "no link frequencies defined\n");
2832 goto out_err;
2833 }
2834
2835 hwcfg->op_sys_clock = devm_kcalloc(
2836 dev, bus_cfg->nr_of_link_frequencies + 1 /* guardian */,
2837 sizeof(*hwcfg->op_sys_clock), GFP_KERNEL);
2838 if (!hwcfg->op_sys_clock)
2839 goto out_err;
2840
2841 for (i = 0; i < bus_cfg->nr_of_link_frequencies; i++) {
2842 hwcfg->op_sys_clock[i] = bus_cfg->link_frequencies[i];
2843 dev_dbg(dev, "freq %d: %lld\n", i, hwcfg->op_sys_clock[i]);
2844 }
2845
2846 v4l2_fwnode_endpoint_free(bus_cfg);
2847 fwnode_handle_put(ep);
2848 return hwcfg;
2849
2850 out_err:
2851 v4l2_fwnode_endpoint_free(bus_cfg);
2852 fwnode_handle_put(ep);
2853 return NULL;
2854 }
2855
smiapp_probe(struct i2c_client * client,const struct i2c_device_id * devid)2856 static int smiapp_probe(struct i2c_client *client,
2857 const struct i2c_device_id *devid)
2858 {
2859 struct smiapp_sensor *sensor;
2860 struct smiapp_hwconfig *hwcfg = smiapp_get_hwconfig(&client->dev);
2861 unsigned int i;
2862 int rval;
2863
2864 if (hwcfg == NULL)
2865 return -ENODEV;
2866
2867 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
2868 if (sensor == NULL)
2869 return -ENOMEM;
2870
2871 sensor->hwcfg = hwcfg;
2872 mutex_init(&sensor->mutex);
2873 sensor->src = &sensor->ssds[sensor->ssds_used];
2874
2875 v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops);
2876 sensor->src->sd.internal_ops = &smiapp_internal_src_ops;
2877
2878 sensor->vana = devm_regulator_get(&client->dev, "vana");
2879 if (IS_ERR(sensor->vana)) {
2880 dev_err(&client->dev, "could not get regulator for vana\n");
2881 return PTR_ERR(sensor->vana);
2882 }
2883
2884 sensor->ext_clk = devm_clk_get(&client->dev, NULL);
2885 if (PTR_ERR(sensor->ext_clk) == -ENOENT) {
2886 dev_info(&client->dev, "no clock defined, continuing...\n");
2887 sensor->ext_clk = NULL;
2888 } else if (IS_ERR(sensor->ext_clk)) {
2889 dev_err(&client->dev, "could not get clock (%ld)\n",
2890 PTR_ERR(sensor->ext_clk));
2891 return -EPROBE_DEFER;
2892 }
2893
2894 if (sensor->ext_clk) {
2895 if (sensor->hwcfg->ext_clk) {
2896 unsigned long rate;
2897
2898 rval = clk_set_rate(sensor->ext_clk,
2899 sensor->hwcfg->ext_clk);
2900 if (rval < 0) {
2901 dev_err(&client->dev,
2902 "unable to set clock freq to %u\n",
2903 sensor->hwcfg->ext_clk);
2904 return rval;
2905 }
2906
2907 rate = clk_get_rate(sensor->ext_clk);
2908 if (rate != sensor->hwcfg->ext_clk) {
2909 dev_err(&client->dev,
2910 "can't set clock freq, asked for %u but got %lu\n",
2911 sensor->hwcfg->ext_clk, rate);
2912 return rval;
2913 }
2914 } else {
2915 sensor->hwcfg->ext_clk = clk_get_rate(sensor->ext_clk);
2916 dev_dbg(&client->dev, "obtained clock freq %u\n",
2917 sensor->hwcfg->ext_clk);
2918 }
2919 } else if (sensor->hwcfg->ext_clk) {
2920 dev_dbg(&client->dev, "assuming clock freq %u\n",
2921 sensor->hwcfg->ext_clk);
2922 } else {
2923 dev_err(&client->dev, "unable to obtain clock freq\n");
2924 return -EINVAL;
2925 }
2926
2927 sensor->xshutdown = devm_gpiod_get_optional(&client->dev, "xshutdown",
2928 GPIOD_OUT_LOW);
2929 if (IS_ERR(sensor->xshutdown))
2930 return PTR_ERR(sensor->xshutdown);
2931
2932 rval = smiapp_power_on(&client->dev);
2933 if (rval < 0)
2934 return rval;
2935
2936 rval = smiapp_identify_module(sensor);
2937 if (rval) {
2938 rval = -ENODEV;
2939 goto out_power_off;
2940 }
2941
2942 rval = smiapp_get_all_limits(sensor);
2943 if (rval) {
2944 rval = -ENODEV;
2945 goto out_power_off;
2946 }
2947
2948 rval = smiapp_read_frame_fmt(sensor);
2949 if (rval) {
2950 rval = -ENODEV;
2951 goto out_power_off;
2952 }
2953
2954 /*
2955 * Handle Sensor Module orientation on the board.
2956 *
2957 * The application of H-FLIP and V-FLIP on the sensor is modified by
2958 * the sensor orientation on the board.
2959 *
2960 * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
2961 * both H-FLIP and V-FLIP for normal operation which also implies
2962 * that a set/unset operation for user space HFLIP and VFLIP v4l2
2963 * controls will need to be internally inverted.
2964 *
2965 * Rotation also changes the bayer pattern.
2966 */
2967 if (sensor->hwcfg->module_board_orient ==
2968 SMIAPP_MODULE_BOARD_ORIENT_180)
2969 sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP |
2970 SMIAPP_IMAGE_ORIENTATION_VFLIP;
2971
2972 rval = smiapp_call_quirk(sensor, limits);
2973 if (rval) {
2974 dev_err(&client->dev, "limits quirks failed\n");
2975 goto out_power_off;
2976 }
2977
2978 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) {
2979 u32 val;
2980
2981 rval = smiapp_read(sensor,
2982 SMIAPP_REG_U8_BINNING_SUBTYPES, &val);
2983 if (rval < 0) {
2984 rval = -ENODEV;
2985 goto out_power_off;
2986 }
2987 sensor->nbinning_subtypes = min_t(u8, val,
2988 SMIAPP_BINNING_SUBTYPES);
2989
2990 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2991 rval = smiapp_read(
2992 sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val);
2993 if (rval < 0) {
2994 rval = -ENODEV;
2995 goto out_power_off;
2996 }
2997 sensor->binning_subtypes[i] =
2998 *(struct smiapp_binning_subtype *)&val;
2999
3000 dev_dbg(&client->dev, "binning %xx%x\n",
3001 sensor->binning_subtypes[i].horizontal,
3002 sensor->binning_subtypes[i].vertical);
3003 }
3004 }
3005 sensor->binning_horizontal = 1;
3006 sensor->binning_vertical = 1;
3007
3008 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
3009 dev_err(&client->dev, "sysfs ident entry creation failed\n");
3010 rval = -ENOENT;
3011 goto out_power_off;
3012 }
3013 /* SMIA++ NVM initialization - it will be read from the sensor
3014 * when it is first requested by userspace.
3015 */
3016 if (sensor->minfo.smiapp_version && sensor->hwcfg->nvm_size) {
3017 sensor->nvm = devm_kzalloc(&client->dev,
3018 sensor->hwcfg->nvm_size, GFP_KERNEL);
3019 if (sensor->nvm == NULL) {
3020 rval = -ENOMEM;
3021 goto out_cleanup;
3022 }
3023
3024 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
3025 dev_err(&client->dev, "sysfs nvm entry failed\n");
3026 rval = -EBUSY;
3027 goto out_cleanup;
3028 }
3029 }
3030
3031 /* We consider this as profile 0 sensor if any of these are zero. */
3032 if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] ||
3033 !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] ||
3034 !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] ||
3035 !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) {
3036 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0;
3037 } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
3038 != SMIAPP_SCALING_CAPABILITY_NONE) {
3039 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
3040 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
3041 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1;
3042 else
3043 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2;
3044 sensor->scaler = &sensor->ssds[sensor->ssds_used];
3045 sensor->ssds_used++;
3046 } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
3047 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
3048 sensor->scaler = &sensor->ssds[sensor->ssds_used];
3049 sensor->ssds_used++;
3050 }
3051 sensor->binner = &sensor->ssds[sensor->ssds_used];
3052 sensor->ssds_used++;
3053 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
3054 sensor->ssds_used++;
3055
3056 sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
3057
3058 /* prepare PLL configuration input values */
3059 sensor->pll.bus_type = SMIAPP_PLL_BUS_TYPE_CSI2;
3060 sensor->pll.csi2.lanes = sensor->hwcfg->lanes;
3061 sensor->pll.ext_clk_freq_hz = sensor->hwcfg->ext_clk;
3062 sensor->pll.scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
3063 /* Profile 0 sensors have no separate OP clock branch. */
3064 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
3065 sensor->pll.flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
3066
3067 smiapp_create_subdev(sensor, sensor->scaler, "scaler", 2);
3068 smiapp_create_subdev(sensor, sensor->binner, "binner", 2);
3069 smiapp_create_subdev(sensor, sensor->pixel_array, "pixel_array", 1);
3070
3071 dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
3072
3073 sensor->pixel_array->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
3074
3075 rval = smiapp_init_controls(sensor);
3076 if (rval < 0)
3077 goto out_cleanup;
3078
3079 rval = smiapp_call_quirk(sensor, init);
3080 if (rval)
3081 goto out_cleanup;
3082
3083 rval = smiapp_get_mbus_formats(sensor);
3084 if (rval) {
3085 rval = -ENODEV;
3086 goto out_cleanup;
3087 }
3088
3089 rval = smiapp_init_late_controls(sensor);
3090 if (rval) {
3091 rval = -ENODEV;
3092 goto out_cleanup;
3093 }
3094
3095 mutex_lock(&sensor->mutex);
3096 rval = smiapp_update_mode(sensor);
3097 mutex_unlock(&sensor->mutex);
3098 if (rval) {
3099 dev_err(&client->dev, "update mode failed\n");
3100 goto out_cleanup;
3101 }
3102
3103 sensor->streaming = false;
3104 sensor->dev_init_done = true;
3105
3106 rval = media_entity_pads_init(&sensor->src->sd.entity, 2,
3107 sensor->src->pads);
3108 if (rval < 0)
3109 goto out_media_entity_cleanup;
3110
3111 rval = v4l2_async_register_subdev_sensor_common(&sensor->src->sd);
3112 if (rval < 0)
3113 goto out_media_entity_cleanup;
3114
3115 pm_runtime_set_active(&client->dev);
3116 pm_runtime_get_noresume(&client->dev);
3117 pm_runtime_enable(&client->dev);
3118 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
3119 pm_runtime_use_autosuspend(&client->dev);
3120 pm_runtime_put_autosuspend(&client->dev);
3121
3122 return 0;
3123
3124 out_media_entity_cleanup:
3125 media_entity_cleanup(&sensor->src->sd.entity);
3126
3127 out_cleanup:
3128 smiapp_cleanup(sensor);
3129
3130 out_power_off:
3131 smiapp_power_off(&client->dev);
3132
3133 return rval;
3134 }
3135
smiapp_remove(struct i2c_client * client)3136 static int smiapp_remove(struct i2c_client *client)
3137 {
3138 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3139 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
3140 unsigned int i;
3141
3142 v4l2_async_unregister_subdev(subdev);
3143
3144 pm_runtime_disable(&client->dev);
3145 if (!pm_runtime_status_suspended(&client->dev))
3146 smiapp_power_off(&client->dev);
3147 pm_runtime_set_suspended(&client->dev);
3148
3149 for (i = 0; i < sensor->ssds_used; i++) {
3150 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
3151 media_entity_cleanup(&sensor->ssds[i].sd.entity);
3152 }
3153 smiapp_cleanup(sensor);
3154
3155 return 0;
3156 }
3157
3158 static const struct of_device_id smiapp_of_table[] = {
3159 { .compatible = "nokia,smia" },
3160 { },
3161 };
3162 MODULE_DEVICE_TABLE(of, smiapp_of_table);
3163
3164 static const struct i2c_device_id smiapp_id_table[] = {
3165 { SMIAPP_NAME, 0 },
3166 { },
3167 };
3168 MODULE_DEVICE_TABLE(i2c, smiapp_id_table);
3169
3170 static const struct dev_pm_ops smiapp_pm_ops = {
3171 SET_SYSTEM_SLEEP_PM_OPS(smiapp_suspend, smiapp_resume)
3172 SET_RUNTIME_PM_OPS(smiapp_power_off, smiapp_power_on, NULL)
3173 };
3174
3175 static struct i2c_driver smiapp_i2c_driver = {
3176 .driver = {
3177 .of_match_table = smiapp_of_table,
3178 .name = SMIAPP_NAME,
3179 .pm = &smiapp_pm_ops,
3180 },
3181 .probe = smiapp_probe,
3182 .remove = smiapp_remove,
3183 .id_table = smiapp_id_table,
3184 };
3185
3186 module_i2c_driver(smiapp_i2c_driver);
3187
3188 MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
3189 MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
3190 MODULE_LICENSE("GPL v2");
3191
