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[media] smiapp: Fully probe the device in probe
[deliverable/linux.git] / drivers / media / i2c / smiapp / smiapp-core.c
CommitLineData
ccfc97bd 1/*
cb7a01ac 2 * drivers/media/i2c/smiapp/smiapp-core.c
ccfc97bd
SA		 3 *
4 * Generic driver for SMIA/SMIA++ compliant camera modules
5 *
6 * Copyright (C) 2010--2012 Nokia Corporation
8c5dff90 7 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
ccfc97bd
SA		 8 *
9 * Based on smiapp driver by Vimarsh Zutshi
10 * Based on jt8ev1.c by Vimarsh Zutshi
11 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2 as published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
ccfc97bd
SA		 21 */
22
2547428d 23#include <linux/clk.h>
ccfc97bd
SA		 24#include <linux/delay.h>
25#include <linux/device.h>
26#include <linux/gpio.h>
27#include <linux/module.h>
390a5fa5 28#include <linux/of_gpio.h>
ccfc97bd 29#include <linux/regulator/consumer.h>
0e2a6b7f
SA		 30#include <linux/slab.h>
31#include <linux/smiapp.h>
ccfc97bd
SA		 32#include <linux/v4l2-mediabus.h>
33#include <media/v4l2-device.h>
390a5fa5 34#include <media/v4l2-of.h>
ccfc97bd
SA		 35
36#include "smiapp.h"
37
563df3d0
SA		 38#define SMIAPP_ALIGN_DIM(dim, flags) \
39 ((flags) & V4L2_SEL_FLAG_GE \
40 ? ALIGN((dim), 2) \
ccfc97bd
SA		 41 : (dim) & ~1)
42
43/*
44 * smiapp_module_idents - supported camera modules
45 */
46static const struct smiapp_module_ident smiapp_module_idents[] = {
47 SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"),
48 SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"),
49 SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
50 SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
51 SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
52 SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
53 SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
54 SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
55 SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
56 SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
57 SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
58};
59
60/*
61 *
62 * Dynamic Capability Identification
63 *
64 */
65
66static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
67{
68 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
69 u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
70 unsigned int i;
71 int rval;
72 int line_count = 0;
73 int embedded_start = -1, embedded_end = -1;
74 int image_start = 0;
75
1e73eea7 76 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
ccfc97bd
SA		 77 &fmt_model_type);
78 if (rval)
79 return rval;
80
1e73eea7 81 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE,
ccfc97bd
SA		 82 &fmt_model_subtype);
83 if (rval)
84 return rval;
85
86 ncol_desc = (fmt_model_subtype
87 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK)
88 >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT;
89 nrow_desc = fmt_model_subtype
90 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK;
91
92 dev_dbg(&client->dev, "format_model_type %s\n",
93 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE
94 ? "2 byte" :
95 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE
96 ? "4 byte" : "is simply bad");
97
98 for (i = 0; i < ncol_desc + nrow_desc; i++) {
99 u32 desc;
100 u32 pixelcode;
101 u32 pixels;
102 char *which;
103 char *what;
104
105 if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) {
106 rval = smiapp_read(
1e73eea7 107 sensor,
ccfc97bd
SA		 108 SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i),
109 &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 rval = smiapp_read(
1e73eea7 121 sensor,
ccfc97bd
SA		 122 SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i),
123 &desc);
124 if (rval)
125 return rval;
126
127 pixelcode =
128 (desc
129 & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK)
130 >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT;
131 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK;
132 } else {
133 dev_dbg(&client->dev,
134 "invalid frame format model type %d\n",
135 fmt_model_type);
136 return -EINVAL;
137 }
138
139 if (i < ncol_desc)
140 which = "columns";
141 else
142 which = "rows";
143
144 switch (pixelcode) {
145 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
146 what = "embedded";
147 break;
148 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY:
149 what = "dummy";
150 break;
151 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK:
152 what = "black";
153 break;
154 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK:
155 what = "dark";
156 break;
157 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
158 what = "visible";
159 break;
160 default:
161 what = "invalid";
162 dev_dbg(&client->dev, "pixelcode %d\n", pixelcode);
163 break;
164 }
165
166 dev_dbg(&client->dev, "%s pixels: %d %s\n",
167 what, pixels, which);
168
169 if (i < ncol_desc)
170 continue;
171
172 /* Handle row descriptors */
173 if (pixelcode
174 == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) {
175 embedded_start = line_count;
176 } else {
177 if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE
178 || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2)
179 image_start = line_count;
180 if (embedded_start != -1 && embedded_end == -1)
181 embedded_end = line_count;
182 }
183 line_count += pixels;
184 }
185
186 if (embedded_start == -1 || embedded_end == -1) {
187 embedded_start = 0;
188 embedded_end = 0;
189 }
190
191 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
192 embedded_start, embedded_end);
193 dev_dbg(&client->dev, "image data starts at line %d\n", image_start);
194
195 return 0;
196}
197
198static int smiapp_pll_configure(struct smiapp_sensor *sensor)
199{
ccfc97bd
SA		 200 struct smiapp_pll *pll = &sensor->pll;
201 int rval;
202
203 rval = smiapp_write(
e3f8bc8c 204 sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt.pix_clk_div);
ccfc97bd
SA		 205 if (rval < 0)
206 return rval;
207
208 rval = smiapp_write(
e3f8bc8c 209 sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt.sys_clk_div);
ccfc97bd
SA		 210 if (rval < 0)
211 return rval;
212
213 rval = smiapp_write(
1e73eea7 214 sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div);
ccfc97bd
SA		 215 if (rval < 0)
216 return rval;
217
218 rval = smiapp_write(
1e73eea7 219 sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier);
ccfc97bd
SA		 220 if (rval < 0)
221 return rval;
222
223 /* Lane op clock ratio does not apply here. */
224 rval = smiapp_write(
1e73eea7 225 sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS,
e3f8bc8c 226 DIV_ROUND_UP(pll->op.sys_clk_freq_hz, 1000000 / 256 / 256));
ccfc97bd
SA		 227 if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
228 return rval;
229
230 rval = smiapp_write(
e3f8bc8c 231 sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op.pix_clk_div);
ccfc97bd
SA		 232 if (rval < 0)
233 return rval;
234
235 return smiapp_write(
e3f8bc8c 236 sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op.sys_clk_div);
ccfc97bd
SA		 237}
238
183bec80
SA		 239static int smiapp_pll_try(struct smiapp_sensor *sensor,
240 struct smiapp_pll *pll)
ccfc97bd
SA		 241{
242 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
243 struct smiapp_pll_limits lim = {
244 .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV],
245 .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV],
246 .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ],
247 .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ],
248 .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER],
249 .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER],
250 .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
251 .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],
252
6ec84a28
LP		 253 .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
254 .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
255 .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
256 .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
257 .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
258 .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
259 .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
260 .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
261
262 .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
263 .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
264 .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
265 .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
266 .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
267 .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
268 .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
269 .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
ccfc97bd
SA		 270
271 .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
272 .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
273 };
183bec80
SA		 274
275 return smiapp_pll_calculate(&client->dev, &lim, pll);
276}
277
278static int smiapp_pll_update(struct smiapp_sensor *sensor)
279{
ccfc97bd
SA		 280 struct smiapp_pll *pll = &sensor->pll;
281 int rval;
282
ccfc97bd
SA		 283 pll->binning_horizontal = sensor->binning_horizontal;
284 pll->binning_vertical = sensor->binning_vertical;
285 pll->link_freq =
286 sensor->link_freq->qmenu_int[sensor->link_freq->val];
287 pll->scale_m = sensor->scale_m;
ccfc97bd
SA		 288 pll->bits_per_pixel = sensor->csi_format->compressed;
289
183bec80 290 rval = smiapp_pll_try(sensor, pll);
ccfc97bd
SA		 291 if (rval < 0)
292 return rval;
293
a328e7e3 294 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_parray,
83313d9f 295 pll->pixel_rate_pixel_array);
a328e7e3 296 __v4l2_ctrl_s_ctrl_int64(sensor->pixel_rate_csi, pll->pixel_rate_csi);
ccfc97bd
SA		 297
298 return 0;
299}
300
301
302/*
303 *
304 * V4L2 Controls handling
305 *
306 */
307
308static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor)
309{
310 struct v4l2_ctrl *ctrl = sensor->exposure;
311 int max;
312
313 max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
314 + sensor->vblank->val
315 - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN];
316
e47a81d8 317 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max);
ccfc97bd
SA		 318}
319
320/*
321 * Order matters.
322 *
323 * 1. Bits-per-pixel, descending.
324 * 2. Bits-per-pixel compressed, descending.
325 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
326 * orders must be defined.
327 */
328static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = {
f5fe58fd
BB		 329 { MEDIA_BUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, },
330 { MEDIA_BUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, },
331 { MEDIA_BUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, },
332 { MEDIA_BUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, },
333 { MEDIA_BUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, },
334 { MEDIA_BUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, },
335 { MEDIA_BUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, },
336 { MEDIA_BUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, },
337 { MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, },
338 { MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, },
339 { MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, },
340 { MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, },
341 { MEDIA_BUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, },
342 { MEDIA_BUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, },
343 { MEDIA_BUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, },
344 { MEDIA_BUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, },
ccfc97bd
SA		 345};
346
347const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
348
349#define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
350 - (unsigned long)smiapp_csi_data_formats) \
351 / sizeof(*smiapp_csi_data_formats))
352
353static u32 smiapp_pixel_order(struct smiapp_sensor *sensor)
354{
355 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
356 int flip = 0;
357
358 if (sensor->hflip) {
359 if (sensor->hflip->val)
360 flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
361
362 if (sensor->vflip->val)
363 flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
364 }
365
366 flip ^= sensor->hvflip_inv_mask;
367
368 dev_dbg(&client->dev, "flip %d\n", flip);
369 return sensor->default_pixel_order ^ flip;
370}
371
372static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor)
373{
374 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
375 unsigned int csi_format_idx =
376 to_csi_format_idx(sensor->csi_format) & ~3;
377 unsigned int internal_csi_format_idx =
378 to_csi_format_idx(sensor->internal_csi_format) & ~3;
379 unsigned int pixel_order = smiapp_pixel_order(sensor);
380
381 sensor->mbus_frame_fmts =
382 sensor->default_mbus_frame_fmts << pixel_order;
383 sensor->csi_format =
384 &smiapp_csi_data_formats[csi_format_idx + pixel_order];
385 sensor->internal_csi_format =
386 &smiapp_csi_data_formats[internal_csi_format_idx
387 + pixel_order];
388
389 BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order
390 >= ARRAY_SIZE(smiapp_csi_data_formats));
ccfc97bd
SA		 391
392 dev_dbg(&client->dev, "new pixel order %s\n",
393 pixel_order_str[pixel_order]);
394}
395
0e2a6b7f
SA		 396static const char * const smiapp_test_patterns[] = {
397 "Disabled",
398 "Solid Colour",
399 "Eight Vertical Colour Bars",
400 "Colour Bars With Fade to Grey",
401 "Pseudorandom Sequence (PN9)",
402};
403
ccfc97bd
SA		 404static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl)
405{
406 struct smiapp_sensor *sensor =
407 container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler)
408 ->sensor;
ccfc97bd
SA		 409 u32 orient = 0;
410 int exposure;
411 int rval;
412
413 switch (ctrl->id) {
414 case V4L2_CID_ANALOGUE_GAIN:
415 return smiapp_write(
1e73eea7 416 sensor,
ccfc97bd
SA		 417 SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val);
418
419 case V4L2_CID_EXPOSURE:
420 return smiapp_write(
1e73eea7 421 sensor,
ccfc97bd
SA		 422 SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val);
423
424 case V4L2_CID_HFLIP:
425 case V4L2_CID_VFLIP:
426 if (sensor->streaming)
427 return -EBUSY;
428
429 if (sensor->hflip->val)
430 orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
431
432 if (sensor->vflip->val)
433 orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
434
435 orient ^= sensor->hvflip_inv_mask;
1e73eea7 436 rval = smiapp_write(sensor,
ccfc97bd
SA		 437 SMIAPP_REG_U8_IMAGE_ORIENTATION,
438 orient);
439 if (rval < 0)
440 return rval;
441
442 smiapp_update_mbus_formats(sensor);
443
444 return 0;
445
446 case V4L2_CID_VBLANK:
447 exposure = sensor->exposure->val;
448
449 __smiapp_update_exposure_limits(sensor);
450
451 if (exposure > sensor->exposure->maximum) {
452 sensor->exposure->val =
453 sensor->exposure->maximum;
454 rval = smiapp_set_ctrl(
455 sensor->exposure);
456 if (rval < 0)
457 return rval;
458 }
459
460 return smiapp_write(
1e73eea7 461 sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES,
ccfc97bd
SA		 462 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
463 + ctrl->val);
464
465 case V4L2_CID_HBLANK:
466 return smiapp_write(
1e73eea7 467 sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK,
ccfc97bd
SA		 468 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
469 + ctrl->val);
470
471 case V4L2_CID_LINK_FREQ:
472 if (sensor->streaming)
473 return -EBUSY;
474
475 return smiapp_pll_update(sensor);
476
0e2a6b7f
SA		 477 case V4L2_CID_TEST_PATTERN: {
478 unsigned int i;
479
480 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
481 v4l2_ctrl_activate(
482 sensor->test_data[i],
483 ctrl->val ==
484 V4L2_SMIAPP_TEST_PATTERN_MODE_SOLID_COLOUR);
485
486 return smiapp_write(
487 sensor, SMIAPP_REG_U16_TEST_PATTERN_MODE, ctrl->val);
488 }
489
490 case V4L2_CID_TEST_PATTERN_RED:
491 return smiapp_write(
492 sensor, SMIAPP_REG_U16_TEST_DATA_RED, ctrl->val);
493
494 case V4L2_CID_TEST_PATTERN_GREENR:
495 return smiapp_write(
496 sensor, SMIAPP_REG_U16_TEST_DATA_GREENR, ctrl->val);
497
498 case V4L2_CID_TEST_PATTERN_BLUE:
499 return smiapp_write(
500 sensor, SMIAPP_REG_U16_TEST_DATA_BLUE, ctrl->val);
501
502 case V4L2_CID_TEST_PATTERN_GREENB:
503 return smiapp_write(
504 sensor, SMIAPP_REG_U16_TEST_DATA_GREENB, ctrl->val);
505
a328e7e3
SA		 506 case V4L2_CID_PIXEL_RATE:
507 /* For v4l2_ctrl_s_ctrl_int64() used internally. */
508 return 0;
509
ccfc97bd
SA		 510 default:
511 return -EINVAL;
512 }
513}
514
515static const struct v4l2_ctrl_ops smiapp_ctrl_ops = {
516 .s_ctrl = smiapp_set_ctrl,
517};
518
519static int smiapp_init_controls(struct smiapp_sensor *sensor)
520{
521 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
602cbcaa
SA		 522 unsigned long *valid_link_freqs = &sensor->valid_link_freqs[
523 sensor->csi_format->compressed - SMIAPP_COMPRESSED_BASE];
0e2a6b7f 524 unsigned int max, i;
ccfc97bd
SA		 525 int rval;
526
0e2a6b7f 527 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 12);
ccfc97bd
SA		 528 if (rval)
529 return rval;
530 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
531
532 sensor->analog_gain = v4l2_ctrl_new_std(
533 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
534 V4L2_CID_ANALOGUE_GAIN,
535 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN],
536 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX],
537 max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U),
538 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]);
539
540 /* Exposure limits will be updated soon, use just something here. */
541 sensor->exposure = v4l2_ctrl_new_std(
542 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
543 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
544
545 sensor->hflip = v4l2_ctrl_new_std(
546 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
547 V4L2_CID_HFLIP, 0, 1, 1, 0);
548 sensor->vflip = v4l2_ctrl_new_std(
549 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
550 V4L2_CID_VFLIP, 0, 1, 1, 0);
551
552 sensor->vblank = v4l2_ctrl_new_std(
553 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
554 V4L2_CID_VBLANK, 0, 1, 1, 0);
555
556 if (sensor->vblank)
557 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
558
559 sensor->hblank = v4l2_ctrl_new_std(
560 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
561 V4L2_CID_HBLANK, 0, 1, 1, 0);
562
563 if (sensor->hblank)
564 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
565
566 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
567 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 568 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd 569
0e2a6b7f
SA		 570 v4l2_ctrl_new_std_menu_items(&sensor->pixel_array->ctrl_handler,
571 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN,
572 ARRAY_SIZE(smiapp_test_patterns) - 1,
573 0, 0, smiapp_test_patterns);
574
575 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++) {
576 int max_value = (1 << sensor->csi_format->width) - 1;
577 sensor->test_data[i] =
578 v4l2_ctrl_new_std(
579 &sensor->pixel_array->ctrl_handler,
580 &smiapp_ctrl_ops, V4L2_CID_TEST_PATTERN_RED + i,
581 0, max_value, 1, max_value);
582 }
583
ccfc97bd
SA		 584 if (sensor->pixel_array->ctrl_handler.error) {
585 dev_err(&client->dev,
586 "pixel array controls initialization failed (%d)\n",
587 sensor->pixel_array->ctrl_handler.error);
588 rval = sensor->pixel_array->ctrl_handler.error;
589 goto 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 goto error;
600 sensor->src->ctrl_handler.lock = &sensor->mutex;
601
06b491fb 602 for (max = 0; sensor->platform_data->op_sys_clock[max + 1]; max++);
ccfc97bd 603
06b491fb
SA		 604 sensor->link_freq = v4l2_ctrl_new_int_menu(
605 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
602cbcaa
SA		 606 V4L2_CID_LINK_FREQ, __fls(*valid_link_freqs),
607 __ffs(*valid_link_freqs), sensor->platform_data->op_sys_clock);
ccfc97bd
SA		 608
609 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
610 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 611 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd
SA		 612
613 if (sensor->src->ctrl_handler.error) {
614 dev_err(&client->dev,
615 "src controls initialization failed (%d)\n",
616 sensor->src->ctrl_handler.error);
617 rval = sensor->src->ctrl_handler.error;
618 goto error;
619 }
620
621 sensor->src->sd.ctrl_handler =
622 &sensor->src->ctrl_handler;
623
624 return 0;
625
626error:
627 v4l2_ctrl_handler_free(&sensor->pixel_array->ctrl_handler);
628 v4l2_ctrl_handler_free(&sensor->src->ctrl_handler);
629
630 return rval;
631}
632
633static void smiapp_free_controls(struct smiapp_sensor *sensor)
634{
635 unsigned int i;
636
637 for (i = 0; i < sensor->ssds_used; i++)
638 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
639}
640
641static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit,
642 unsigned int n)
643{
644 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
645 unsigned int i;
646 u32 val;
647 int rval;
648
649 for (i = 0; i < n; i++) {
650 rval = smiapp_read(
1e73eea7 651 sensor, smiapp_reg_limits[limit[i]].addr, &val);
ccfc97bd
SA		 652 if (rval)
653 return rval;
654 sensor->limits[limit[i]] = val;
393cbd8d 655 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
ccfc97bd
SA		 656 smiapp_reg_limits[limit[i]].addr,
657 smiapp_reg_limits[limit[i]].what, val, val);
658 }
659
660 return 0;
661}
662
663static int smiapp_get_all_limits(struct smiapp_sensor *sensor)
664{
665 unsigned int i;
666 int rval;
667
668 for (i = 0; i < SMIAPP_LIMIT_LAST; i++) {
669 rval = smiapp_get_limits(sensor, &i, 1);
670 if (rval < 0)
671 return rval;
672 }
673
674 if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0)
675 smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16);
676
677 return 0;
678}
679
680static int smiapp_get_limits_binning(struct smiapp_sensor *sensor)
681{
3de886e0 682 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
ccfc97bd
SA		 683 static u32 const limits[] = {
684 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN,
685 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN,
686 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN,
687 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN,
688 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN,
689 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN,
690 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN,
691 };
692 static u32 const limits_replace[] = {
693 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES,
694 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES,
695 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK,
696 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK,
697 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK,
698 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN,
699 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN,
700 };
3de886e0
SA		 701 unsigned int i;
702 int rval;
ccfc97bd
SA		 703
704 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] ==
705 SMIAPP_BINNING_CAPABILITY_NO) {
ccfc97bd
SA		 706 for (i = 0; i < ARRAY_SIZE(limits); i++)
707 sensor->limits[limits[i]] =
708 sensor->limits[limits_replace[i]];
709
710 return 0;
711 }
712
3de886e0
SA		 713 rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits));
714 if (rval < 0)
715 return rval;
716
717 /*
718 * Sanity check whether the binning limits are valid. If not,
719 * use the non-binning ones.
720 */
721 if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN]
722 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN]
723 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN])
724 return 0;
725
726 for (i = 0; i < ARRAY_SIZE(limits); i++) {
727 dev_dbg(&client->dev,
728 "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n",
729 smiapp_reg_limits[limits[i]].addr,
730 smiapp_reg_limits[limits[i]].what,
731 sensor->limits[limits_replace[i]],
732 sensor->limits[limits_replace[i]]);
733 sensor->limits[limits[i]] =
734 sensor->limits[limits_replace[i]];
735 }
736
737 return 0;
ccfc97bd
SA		 738}
739
740static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor)
741{
742 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
38a833c7 743 struct smiapp_pll *pll = &sensor->pll;
ccfc97bd
SA		 744 unsigned int type, n;
745 unsigned int i, pixel_order;
746 int rval;
747
748 rval = smiapp_read(
1e73eea7 749 sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type);
ccfc97bd
SA		 750 if (rval)
751 return rval;
752
753 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
754
1e73eea7 755 rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER,
ccfc97bd
SA		 756 &pixel_order);
757 if (rval)
758 return rval;
759
760 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
761 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
762 return -EINVAL;
763 }
764
765 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
766 pixel_order_str[pixel_order]);
767
768 switch (type) {
769 case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL:
770 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
771 break;
772 case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED:
773 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N;
774 break;
775 default:
776 return -EINVAL;
777 }
778
779 sensor->default_pixel_order = pixel_order;
780 sensor->mbus_frame_fmts = 0;
781
782 for (i = 0; i < n; i++) {
783 unsigned int fmt, j;
784
785 rval = smiapp_read(
1e73eea7 786 sensor,
ccfc97bd
SA		 787 SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt);
788 if (rval)
789 return rval;
790
48cb4a5d
SA		 791 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
792 i, fmt >> 8, (u8)fmt);
ccfc97bd
SA		 793
794 for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) {
795 const struct smiapp_csi_data_format *f =
796 &smiapp_csi_data_formats[j];
797
798 if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG)
799 continue;
800
801 if (f->width != fmt >> 8 || f->compressed != (u8)fmt)
802 continue;
803
804 dev_dbg(&client->dev, "jolly good! %d\n", j);
805
806 sensor->default_mbus_frame_fmts |= 1 << j;
ccfc97bd
SA		 807 }
808 }
809
38a833c7
SA		 810 /* Figure out which BPP values can be used with which formats. */
811 pll->binning_horizontal = 1;
812 pll->binning_vertical = 1;
813 pll->scale_m = sensor->scale_m;
814
815 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
816 const struct smiapp_csi_data_format *f =
817 &smiapp_csi_data_formats[i];
818 unsigned long *valid_link_freqs =
819 &sensor->valid_link_freqs[
820 f->compressed - SMIAPP_COMPRESSED_BASE];
821 unsigned int j;
822
823 BUG_ON(f->compressed < SMIAPP_COMPRESSED_BASE);
824 BUG_ON(f->compressed > SMIAPP_COMPRESSED_MAX);
825
826 if (!(sensor->default_mbus_frame_fmts & 1 << i))
827 continue;
828
829 pll->bits_per_pixel = f->compressed;
830
831 for (j = 0; sensor->platform_data->op_sys_clock[j]; j++) {
832 pll->link_freq = sensor->platform_data->op_sys_clock[j];
833
834 rval = smiapp_pll_try(sensor, pll);
835 dev_dbg(&client->dev, "link freq %u Hz, bpp %u %s\n",
836 pll->link_freq, pll->bits_per_pixel,
837 rval ? "not ok" : "ok");
838 if (rval)
839 continue;
840
841 set_bit(j, valid_link_freqs);
842 }
cd78b6af
SA		 843
844 if (!*valid_link_freqs) {
845 dev_info(&client->dev,
846 "no valid link frequencies for %u bpp\n",
847 f->compressed);
848 sensor->default_mbus_frame_fmts &= ~BIT(i);
849 continue;
850 }
851
852 if (!sensor->csi_format
853 || f->width > sensor->csi_format->width
854 || (f->width == sensor->csi_format->width
855 && f->compressed > sensor->csi_format->compressed)) {
856 sensor->csi_format = f;
857 sensor->internal_csi_format = f;
ccfc97bd
SA		 858 }
859 }
860
861 if (!sensor->csi_format) {
862 dev_err(&client->dev, "no supported mbus code found\n");
863 return -EINVAL;
864 }
865
866 smiapp_update_mbus_formats(sensor);
867
868 return 0;
869}
870
871static void smiapp_update_blanking(struct smiapp_sensor *sensor)
872{
873 struct v4l2_ctrl *vblank = sensor->vblank;
874 struct v4l2_ctrl *hblank = sensor->hblank;
e47a81d8 875 int min, max;
ccfc97bd 876
e47a81d8
SA		 877 min = max_t(int,
878 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES],
879 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] -
880 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height);
881 max = sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] -
ccfc97bd
SA		 882 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
883
e47a81d8
SA		 884 __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min);
885
886 min = max_t(int,
887 sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] -
888 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width,
889 sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]);
890 max = sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] -
ccfc97bd
SA		 891 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
892
e47a81d8 893 __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min);
ccfc97bd
SA		 894
895 __smiapp_update_exposure_limits(sensor);
896}
897
898static int smiapp_update_mode(struct smiapp_sensor *sensor)
899{
900 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
901 unsigned int binning_mode;
902 int rval;
903
904 dev_dbg(&client->dev, "frame size: %dx%d\n",
905 sensor->src->crop[SMIAPP_PAD_SRC].width,
906 sensor->src->crop[SMIAPP_PAD_SRC].height);
907 dev_dbg(&client->dev, "csi format width: %d\n",
908 sensor->csi_format->width);
909
910 /* Binning has to be set up here; it affects limits */
911 if (sensor->binning_horizontal == 1 &&
912 sensor->binning_vertical == 1) {
913 binning_mode = 0;
914 } else {
915 u8 binning_type =
916 (sensor->binning_horizontal << 4)
917 | sensor->binning_vertical;
918
919 rval = smiapp_write(
1e73eea7 920 sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type);
ccfc97bd
SA		 921 if (rval < 0)
922 return rval;
923
924 binning_mode = 1;
925 }
1e73eea7 926 rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode);
ccfc97bd
SA		 927 if (rval < 0)
928 return rval;
929
930 /* Get updated limits due to binning */
931 rval = smiapp_get_limits_binning(sensor);
932 if (rval < 0)
933 return rval;
934
935 rval = smiapp_pll_update(sensor);
936 if (rval < 0)
937 return rval;
938
939 /* Output from pixel array, including blanking */
940 smiapp_update_blanking(sensor);
941
942 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
943 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
944
945 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
83313d9f 946 sensor->pll.pixel_rate_pixel_array /
ccfc97bd
SA		 947 ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
948 + sensor->hblank->val) *
949 (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
950 + sensor->vblank->val) / 100));
951
952 return 0;
953}
954
955/*
956 *
957 * SMIA++ NVM handling
958 *
959 */
960static int smiapp_read_nvm(struct smiapp_sensor *sensor,
961 unsigned char *nvm)
962{
ccfc97bd 963 u32 i, s, p, np, v;
04582947 964 int rval = 0, rval2;
ccfc97bd
SA		 965
966 np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE;
967 for (p = 0; p < np; p++) {
968 rval = smiapp_write(
1e73eea7 969 sensor,
ccfc97bd
SA		 970 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p);
971 if (rval)
972 goto out;
973
1e73eea7 974 rval = smiapp_write(sensor,
ccfc97bd
SA		 975 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL,
976 SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN |
977 SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN);
978 if (rval)
979 goto out;
980
981 for (i = 0; i < 1000; i++) {
982 rval = smiapp_read(
1e73eea7 983 sensor,
ccfc97bd
SA		 984 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s);
985
986 if (rval)
987 goto out;
988
989 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
990 break;
991
992 if (--i == 0) {
993 rval = -ETIMEDOUT;
994 goto out;
995 }
996
997 }
998
999 for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
1000 rval = smiapp_read(
1e73eea7 1001 sensor,
ccfc97bd
SA		 1002 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i,
1003 &v);
1004 if (rval)
1005 goto out;
1006
1007 *nvm++ = v;
1008 }
1009 }
1010
1011out:
1e73eea7 1012 rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0);
ccfc97bd
SA		 1013 if (rval < 0)
1014 return rval;
1015 else
1016 return rval2;
1017}
1018
1019/*
1020 *
1021 * SMIA++ CCI address control
1022 *
1023 */
1024static int smiapp_change_cci_addr(struct smiapp_sensor *sensor)
1025{
1026 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1027 int rval;
1028 u32 val;
1029
1030 client->addr = sensor->platform_data->i2c_addr_dfl;
1031
1e73eea7 1032 rval = smiapp_write(sensor,
ccfc97bd
SA		 1033 SMIAPP_REG_U8_CCI_ADDRESS_CONTROL,
1034 sensor->platform_data->i2c_addr_alt << 1);
1035 if (rval)
1036 return rval;
1037
1038 client->addr = sensor->platform_data->i2c_addr_alt;
1039
1040 /* verify addr change went ok */
1e73eea7 1041 rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val);
ccfc97bd
SA		 1042 if (rval)
1043 return rval;
1044
1045 if (val != sensor->platform_data->i2c_addr_alt << 1)
1046 return -ENODEV;
1047
1048 return 0;
1049}
1050
1051/*
1052 *
1053 * SMIA++ Mode Control
1054 *
1055 */
1056static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor)
1057{
ccfc97bd
SA		 1058 struct smiapp_flash_strobe_parms *strobe_setup;
1059 unsigned int ext_freq = sensor->platform_data->ext_clk;
1060 u32 tmp;
1061 u32 strobe_adjustment;
1062 u32 strobe_width_high_rs;
1063 int rval;
1064
1065 strobe_setup = sensor->platform_data->strobe_setup;
1066
1067 /*
1068 * How to calculate registers related to strobe length. Please
1069 * do not change, or if you do at least know what you're
1070 * doing. :-)
1071 *
8c5dff90 1072 * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25
ccfc97bd
SA		 1073 *
1074 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
1075 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
1076 *
1077 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
1078 * flash_strobe_adjustment E N, [1 - 0xff]
1079 *
1080 * The formula above is written as below to keep it on one
1081 * line:
1082 *
1083 * l / 10^6 = w / e * a
1084 *
1085 * Let's mark w * a by x:
1086 *
1087 * x = w * a
1088 *
1089 * Thus, we get:
1090 *
1091 * x = l * e / 10^6
1092 *
1093 * The strobe width must be at least as long as requested,
1094 * thus rounding upwards is needed.
1095 *
1096 * x = (l * e + 10^6 - 1) / 10^6
1097 * -----------------------------
1098 *
1099 * Maximum possible accuracy is wanted at all times. Thus keep
1100 * a as small as possible.
1101 *
1102 * Calculate a, assuming maximum w, with rounding upwards:
1103 *
1104 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1105 * -------------------------------------
1106 *
1107 * Thus, we also get w, with that a, with rounding upwards:
1108 *
1109 * w = (x + a - 1) / a
1110 * -------------------
1111 *
1112 * To get limits:
1113 *
1114 * x E [1, (2^16 - 1) * (2^8 - 1)]
1115 *
1116 * Substituting maximum x to the original formula (with rounding),
1117 * the maximum l is thus
1118 *
1119 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1120 *
1121 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1122 * --------------------------------------------------
1123 *
1124 * flash_strobe_length must be clamped between 1 and
1125 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1126 *
1127 * Then,
1128 *
1129 * flash_strobe_adjustment = ((flash_strobe_length *
1130 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1131 *
1132 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1133 * EXTCLK freq + 10^6 - 1) / 10^6 +
1134 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1135 */
1136 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1137 1000000 + 1, ext_freq);
1138 strobe_setup->strobe_width_high_us =
1139 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1140
1141 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1142 1000000 - 1), 1000000ULL);
1143 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1144 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1145 strobe_adjustment;
1146
1e73eea7 1147 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS,
ccfc97bd
SA		 1148 strobe_setup->mode);
1149 if (rval < 0)
1150 goto out;
1151
1e73eea7 1152 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT,
ccfc97bd
SA		 1153 strobe_adjustment);
1154 if (rval < 0)
1155 goto out;
1156
1157 rval = smiapp_write(
1e73eea7 1158 sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
ccfc97bd
SA		 1159 strobe_width_high_rs);
1160 if (rval < 0)
1161 goto out;
1162
1e73eea7 1163 rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL,
ccfc97bd
SA		 1164 strobe_setup->strobe_delay);
1165 if (rval < 0)
1166 goto out;
1167
1e73eea7 1168 rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT,
ccfc97bd
SA		 1169 strobe_setup->stobe_start_point);
1170 if (rval < 0)
1171 goto out;
1172
1e73eea7 1173 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS,
ccfc97bd
SA		 1174 strobe_setup->trigger);
1175
1176out:
1177 sensor->platform_data->strobe_setup->trigger = 0;
1178
1179 return rval;
1180}
1181
1182/* -----------------------------------------------------------------------------
1183 * Power management
1184 */
1185
1186static int smiapp_power_on(struct smiapp_sensor *sensor)
1187{
1188 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1189 unsigned int sleep;
1190 int rval;
1191
1192 rval = regulator_enable(sensor->vana);
1193 if (rval) {
1194 dev_err(&client->dev, "failed to enable vana regulator\n");
1195 return rval;
1196 }
1197 usleep_range(1000, 1000);
1198
2547428d
SA		 1199 if (sensor->platform_data->set_xclk)
1200 rval = sensor->platform_data->set_xclk(
1201 &sensor->src->sd, sensor->platform_data->ext_clk);
1202 else
d0aae004 1203 rval = clk_prepare_enable(sensor->ext_clk);
ccfc97bd 1204 if (rval < 0) {
d0aae004 1205 dev_dbg(&client->dev, "failed to enable xclk\n");
ccfc97bd
SA		 1206 goto out_xclk_fail;
1207 }
1208 usleep_range(1000, 1000);
1209
9945374e 1210 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd
SA		 1211 gpio_set_value(sensor->platform_data->xshutdown, 1);
1212
1213 sleep = SMIAPP_RESET_DELAY(sensor->platform_data->ext_clk);
1214 usleep_range(sleep, sleep);
1215
1216 /*
1217 * Failures to respond to the address change command have been noticed.
1218 * Those failures seem to be caused by the sensor requiring a longer
1219 * boot time than advertised. An additional 10ms delay seems to work
1220 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1221 * unnecessary. The failures need to be investigated to find a proper
1222 * fix, and a delay will likely need to be added here if the I2C write
1223 * retry hack is reverted before the root cause of the boot time issue
1224 * is found.
1225 */
1226
1227 if (sensor->platform_data->i2c_addr_alt) {
1228 rval = smiapp_change_cci_addr(sensor);
1229 if (rval) {
1230 dev_err(&client->dev, "cci address change error\n");
1231 goto out_cci_addr_fail;
1232 }
1233 }
1234
1e73eea7 1235 rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
ccfc97bd
SA		 1236 SMIAPP_SOFTWARE_RESET);
1237 if (rval < 0) {
1238 dev_err(&client->dev, "software reset failed\n");
1239 goto out_cci_addr_fail;
1240 }
1241
1242 if (sensor->platform_data->i2c_addr_alt) {
1243 rval = smiapp_change_cci_addr(sensor);
1244 if (rval) {
1245 dev_err(&client->dev, "cci address change error\n");
1246 goto out_cci_addr_fail;
1247 }
1248 }
1249
1e73eea7 1250 rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
ccfc97bd
SA		 1251 SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
1252 if (rval) {
1253 dev_err(&client->dev, "compression mode set failed\n");
1254 goto out_cci_addr_fail;
1255 }
1256
1257 rval = smiapp_write(
1e73eea7 1258 sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
ccfc97bd
SA		 1259 sensor->platform_data->ext_clk / (1000000 / (1 << 8)));
1260 if (rval) {
1261 dev_err(&client->dev, "extclk frequency set failed\n");
1262 goto out_cci_addr_fail;
1263 }
1264
1e73eea7 1265 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
ccfc97bd
SA		 1266 sensor->platform_data->lanes - 1);
1267 if (rval) {
1268 dev_err(&client->dev, "csi lane mode set failed\n");
1269 goto out_cci_addr_fail;
1270 }
1271
1e73eea7 1272 rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
ccfc97bd
SA		 1273 SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
1274 if (rval) {
1275 dev_err(&client->dev, "fast standby set failed\n");
1276 goto out_cci_addr_fail;
1277 }
1278
1e73eea7 1279 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
ccfc97bd
SA		 1280 sensor->platform_data->csi_signalling_mode);
1281 if (rval) {
1282 dev_err(&client->dev, "csi signalling mode set failed\n");
1283 goto out_cci_addr_fail;
1284 }
1285
1286 /* DPHY control done by sensor based on requested link rate */
1e73eea7 1287 rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
ccfc97bd
SA		 1288 SMIAPP_DPHY_CTRL_UI);
1289 if (rval < 0)
1290 return rval;
1291
1292 rval = smiapp_call_quirk(sensor, post_poweron);
1293 if (rval) {
1294 dev_err(&client->dev, "post_poweron quirks failed\n");
1295 goto out_cci_addr_fail;
1296 }
1297
1298 /* Are we still initialising...? If yes, return here. */
1299 if (!sensor->pixel_array)
1300 return 0;
1301
1302 rval = v4l2_ctrl_handler_setup(
1303 &sensor->pixel_array->ctrl_handler);
1304 if (rval)
1305 goto out_cci_addr_fail;
1306
1307 rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1308 if (rval)
1309 goto out_cci_addr_fail;
1310
1311 mutex_lock(&sensor->mutex);
1312 rval = smiapp_update_mode(sensor);
1313 mutex_unlock(&sensor->mutex);
1314 if (rval < 0)
1315 goto out_cci_addr_fail;
1316
1317 return 0;
1318
1319out_cci_addr_fail:
9945374e 1320 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1321 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1322 if (sensor->platform_data->set_xclk)
1323 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1324 else
d0aae004 1325 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1326
1327out_xclk_fail:
1328 regulator_disable(sensor->vana);
1329 return rval;
1330}
1331
1332static void smiapp_power_off(struct smiapp_sensor *sensor)
1333{
ccfc97bd
SA		 1334 /*
1335 * Currently power/clock to lens are enable/disabled separately
1336 * but they are essentially the same signals. So if the sensor is
1337 * powered off while the lens is powered on the sensor does not
1338 * really see a power off and next time the cci address change
1339 * will fail. So do a soft reset explicitly here.
1340 */
1341 if (sensor->platform_data->i2c_addr_alt)
1e73eea7 1342 smiapp_write(sensor,
ccfc97bd
SA		 1343 SMIAPP_REG_U8_SOFTWARE_RESET,
1344 SMIAPP_SOFTWARE_RESET);
1345
9945374e 1346 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1347 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1348 if (sensor->platform_data->set_xclk)
1349 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1350 else
d0aae004 1351 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1352 usleep_range(5000, 5000);
1353 regulator_disable(sensor->vana);
06e916b7 1354 sensor->streaming = false;
ccfc97bd
SA		 1355}
1356
1357static int smiapp_set_power(struct v4l2_subdev *subdev, int on)
1358{
1359 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1360 int ret = 0;
1361
1362 mutex_lock(&sensor->power_mutex);
1363
58e43d90 1364 if (on && !sensor->power_count) {
ccfc97bd
SA		 1365 /* Power on and perform initialisation. */
1366 ret = smiapp_power_on(sensor);
1367 if (ret < 0)
1368 goto out;
58e43d90 1369 } else if (!on && sensor->power_count == 1) {
ccfc97bd
SA		 1370 smiapp_power_off(sensor);
1371 }
1372
1373 /* Update the power count. */
1374 sensor->power_count += on ? 1 : -1;
1375 WARN_ON(sensor->power_count < 0);
1376
1377out:
1378 mutex_unlock(&sensor->power_mutex);
1379 return ret;
1380}
1381
1382/* -----------------------------------------------------------------------------
1383 * Video stream management
1384 */
1385
1386static int smiapp_start_streaming(struct smiapp_sensor *sensor)
1387{
1388 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1389 int rval;
1390
1391 mutex_lock(&sensor->mutex);
1392
1e73eea7 1393 rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT,
ccfc97bd
SA		 1394 (sensor->csi_format->width << 8) |
1395 sensor->csi_format->compressed);
1396 if (rval)
1397 goto out;
1398
1399 rval = smiapp_pll_configure(sensor);
1400 if (rval)
1401 goto out;
1402
1403 /* Analog crop start coordinates */
1e73eea7 1404 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START,
ccfc97bd
SA		 1405 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left);
1406 if (rval < 0)
1407 goto out;
1408
1e73eea7 1409 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START,
ccfc97bd
SA		 1410 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top);
1411 if (rval < 0)
1412 goto out;
1413
1414 /* Analog crop end coordinates */
1415 rval = smiapp_write(
1e73eea7 1416 sensor, SMIAPP_REG_U16_X_ADDR_END,
ccfc97bd
SA		 1417 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left
1418 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1);
1419 if (rval < 0)
1420 goto out;
1421
1422 rval = smiapp_write(
1e73eea7 1423 sensor, SMIAPP_REG_U16_Y_ADDR_END,
ccfc97bd
SA		 1424 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top
1425 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1);
1426 if (rval < 0)
1427 goto out;
1428
1429 /*
1430 * Output from pixel array, including blanking, is set using
1431 * controls below. No need to set here.
1432 */
1433
1434 /* Digital crop */
1435 if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1436 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1437 rval = smiapp_write(
1e73eea7 1438 sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET,
ccfc97bd
SA		 1439 sensor->scaler->crop[SMIAPP_PAD_SINK].left);
1440 if (rval < 0)
1441 goto out;
1442
1443 rval = smiapp_write(
1e73eea7 1444 sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET,
ccfc97bd
SA		 1445 sensor->scaler->crop[SMIAPP_PAD_SINK].top);
1446 if (rval < 0)
1447 goto out;
1448
1449 rval = smiapp_write(
1e73eea7 1450 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH,
ccfc97bd
SA		 1451 sensor->scaler->crop[SMIAPP_PAD_SINK].width);
1452 if (rval < 0)
1453 goto out;
1454
1455 rval = smiapp_write(
1e73eea7 1456 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT,
ccfc97bd
SA		 1457 sensor->scaler->crop[SMIAPP_PAD_SINK].height);
1458 if (rval < 0)
1459 goto out;
1460 }
1461
1462 /* Scaling */
1463 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1464 != SMIAPP_SCALING_CAPABILITY_NONE) {
1e73eea7 1465 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE,
ccfc97bd
SA		 1466 sensor->scaling_mode);
1467 if (rval < 0)
1468 goto out;
1469
1e73eea7 1470 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M,
ccfc97bd
SA		 1471 sensor->scale_m);
1472 if (rval < 0)
1473 goto out;
1474 }
1475
1476 /* Output size from sensor */
1e73eea7 1477 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE,
ccfc97bd
SA		 1478 sensor->src->crop[SMIAPP_PAD_SRC].width);
1479 if (rval < 0)
1480 goto out;
1e73eea7 1481 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE,
ccfc97bd
SA		 1482 sensor->src->crop[SMIAPP_PAD_SRC].height);
1483 if (rval < 0)
1484 goto out;
1485
1486 if ((sensor->flash_capability &
1487 (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1488 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) &&
1489 sensor->platform_data->strobe_setup != NULL &&
1490 sensor->platform_data->strobe_setup->trigger != 0) {
1491 rval = smiapp_setup_flash_strobe(sensor);
1492 if (rval)
1493 goto out;
1494 }
1495
1496 rval = smiapp_call_quirk(sensor, pre_streamon);
1497 if (rval) {
1498 dev_err(&client->dev, "pre_streamon quirks failed\n");
1499 goto out;
1500 }
1501
1e73eea7 1502 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1503 SMIAPP_MODE_SELECT_STREAMING);
1504
1505out:
1506 mutex_unlock(&sensor->mutex);
1507
1508 return rval;
1509}
1510
1511static int smiapp_stop_streaming(struct smiapp_sensor *sensor)
1512{
1513 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1514 int rval;
1515
1516 mutex_lock(&sensor->mutex);
1e73eea7 1517 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1518 SMIAPP_MODE_SELECT_SOFTWARE_STANDBY);
1519 if (rval)
1520 goto out;
1521
1522 rval = smiapp_call_quirk(sensor, post_streamoff);
1523 if (rval)
1524 dev_err(&client->dev, "post_streamoff quirks failed\n");
1525
1526out:
1527 mutex_unlock(&sensor->mutex);
1528 return rval;
1529}
1530
1531/* -----------------------------------------------------------------------------
1532 * V4L2 subdev video operations
1533 */
1534
1535static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
1536{
1537 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1538 int rval;
1539
1540 if (sensor->streaming == enable)
1541 return 0;
1542
1543 if (enable) {
06e916b7 1544 sensor->streaming = true;
ccfc97bd
SA		 1545 rval = smiapp_start_streaming(sensor);
1546 if (rval < 0)
06e916b7 1547 sensor->streaming = false;
ccfc97bd
SA		 1548 } else {
1549 rval = smiapp_stop_streaming(sensor);
06e916b7 1550 sensor->streaming = false;
ccfc97bd
SA		 1551 }
1552
1553 return rval;
1554}
1555
1556static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev,
1557 struct v4l2_subdev_fh *fh,
1558 struct v4l2_subdev_mbus_code_enum *code)
1559{
1560 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1561 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1562 unsigned int i;
1563 int idx = -1;
1564 int rval = -EINVAL;
1565
1566 mutex_lock(&sensor->mutex);
1567
1568 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1569 subdev->name, code->pad, code->index);
1570
1571 if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) {
1572 if (code->index)
1573 goto out;
1574
1575 code->code = sensor->internal_csi_format->code;
1576 rval = 0;
1577 goto out;
1578 }
1579
1580 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1581 if (sensor->mbus_frame_fmts & (1 << i))
1582 idx++;
1583
1584 if (idx == code->index) {
1585 code->code = smiapp_csi_data_formats[i].code;
1586 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1587 code->index, i, code->code);
1588 rval = 0;
1589 break;
1590 }
1591 }
1592
1593out:
1594 mutex_unlock(&sensor->mutex);
1595
1596 return rval;
1597}
1598
1599static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev,
1600 unsigned int pad)
1601{
1602 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1603
1604 if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC)
1605 return sensor->csi_format->code;
1606 else
1607 return sensor->internal_csi_format->code;
1608}
1609
1610static int __smiapp_get_format(struct v4l2_subdev *subdev,
1611 struct v4l2_subdev_fh *fh,
1612 struct v4l2_subdev_format *fmt)
1613{
1614 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1615
1616 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1617 fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad);
1618 } else {
1619 struct v4l2_rect *r;
1620
1621 if (fmt->pad == ssd->source_pad)
1622 r = &ssd->crop[ssd->source_pad];
1623 else
1624 r = &ssd->sink_fmt;
1625
1626 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1627 fmt->format.width = r->width;
1628 fmt->format.height = r->height;
7ed0b291 1629 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1630 }
1631
1632 return 0;
1633}
1634
1635static int smiapp_get_format(struct v4l2_subdev *subdev,
1636 struct v4l2_subdev_fh *fh,
1637 struct v4l2_subdev_format *fmt)
1638{
1639 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1640 int rval;
1641
1642 mutex_lock(&sensor->mutex);
1643 rval = __smiapp_get_format(subdev, fh, fmt);
1644 mutex_unlock(&sensor->mutex);
1645
1646 return rval;
1647}
1648
1649static void smiapp_get_crop_compose(struct v4l2_subdev *subdev,
1650 struct v4l2_subdev_fh *fh,
1651 struct v4l2_rect **crops,
1652 struct v4l2_rect **comps, int which)
1653{
1654 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1655 unsigned int i;
1656
1657 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1658 if (crops)
1659 for (i = 0; i < subdev->entity.num_pads; i++)
1660 crops[i] = &ssd->crop[i];
1661 if (comps)
1662 *comps = &ssd->compose;
1663 } else {
1664 if (crops) {
1665 for (i = 0; i < subdev->entity.num_pads; i++) {
1666 crops[i] = v4l2_subdev_get_try_crop(fh, i);
1667 BUG_ON(!crops[i]);
1668 }
1669 }
1670 if (comps) {
1671 *comps = v4l2_subdev_get_try_compose(fh,
1672 SMIAPP_PAD_SINK);
1673 BUG_ON(!*comps);
1674 }
1675 }
1676}
1677
1678/* Changes require propagation only on sink pad. */
1679static void smiapp_propagate(struct v4l2_subdev *subdev,
1680 struct v4l2_subdev_fh *fh, int which,
1681 int target)
1682{
1683 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1684 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1685 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1686
1687 smiapp_get_crop_compose(subdev, fh, crops, &comp, which);
1688
1689 switch (target) {
5689b288 1690 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 1691 comp->width = crops[SMIAPP_PAD_SINK]->width;
1692 comp->height = crops[SMIAPP_PAD_SINK]->height;
1693 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1694 if (ssd == sensor->scaler) {
1695 sensor->scale_m =
1696 sensor->limits[
1697 SMIAPP_LIMIT_SCALER_N_MIN];
1698 sensor->scaling_mode =
1699 SMIAPP_SCALING_MODE_NONE;
1700 } else if (ssd == sensor->binner) {
1701 sensor->binning_horizontal = 1;
1702 sensor->binning_vertical = 1;
1703 }
1704 }
1705 /* Fall through */
5689b288 1706 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 1707 *crops[SMIAPP_PAD_SRC] = *comp;
1708 break;
1709 default:
1710 BUG();
1711 }
1712}
1713
1714static const struct smiapp_csi_data_format
1715*smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code)
1716{
1717 const struct smiapp_csi_data_format *csi_format = sensor->csi_format;
1718 unsigned int i;
1719
1720 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1721 if (sensor->mbus_frame_fmts & (1 << i)
1722 && smiapp_csi_data_formats[i].code == code)
1723 return &smiapp_csi_data_formats[i];
1724 }
1725
1726 return csi_format;
1727}
1728
e91cbeb2
SA		 1729static int smiapp_set_format_source(struct v4l2_subdev *subdev,
1730 struct v4l2_subdev_fh *fh,
1731 struct v4l2_subdev_format *fmt)
ccfc97bd
SA		 1732{
1733 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
e91cbeb2
SA		 1734 const struct smiapp_csi_data_format *csi_format,
1735 *old_csi_format = sensor->csi_format;
602cbcaa 1736 unsigned long *valid_link_freqs;
e91cbeb2
SA		 1737 u32 code = fmt->format.code;
1738 unsigned int i;
1739 int rval;
ccfc97bd 1740
e91cbeb2
SA		 1741 rval = __smiapp_get_format(subdev, fh, fmt);
1742 if (rval)
1743 return rval;
ccfc97bd
SA		 1744
1745 /*
1746 * Media bus code is changeable on src subdev's source pad. On
1747 * other source pads we just get format here.
1748 */
e91cbeb2
SA		 1749 if (subdev != &sensor->src->sd)
1750 return 0;
ccfc97bd 1751
e91cbeb2 1752 csi_format = smiapp_validate_csi_data_format(sensor, code);
0e2a6b7f 1753
e91cbeb2 1754 fmt->format.code = csi_format->code;
0e2a6b7f 1755
e91cbeb2
SA		 1756 if (fmt->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1757 return 0;
ccfc97bd 1758
e91cbeb2 1759 sensor->csi_format = csi_format;
0e2a6b7f 1760
e91cbeb2 1761 if (csi_format->width != old_csi_format->width)
0e2a6b7f 1762 for (i = 0; i < ARRAY_SIZE(sensor->test_data); i++)
e91cbeb2
SA		 1763 __v4l2_ctrl_modify_range(
1764 sensor->test_data[i], 0,
1765 (1 << csi_format->width) - 1, 1, 0);
0e2a6b7f 1766
602cbcaa 1767 if (csi_format->compressed == old_csi_format->compressed)
0e2a6b7f 1768 return 0;
602cbcaa
SA		 1769
1770 valid_link_freqs =
1771 &sensor->valid_link_freqs[sensor->csi_format->compressed
1772 - SMIAPP_COMPRESSED_BASE];
1773
1774 __v4l2_ctrl_modify_range(
1775 sensor->link_freq, 0,
1776 __fls(*valid_link_freqs), ~*valid_link_freqs,
1777 __ffs(*valid_link_freqs));
1778
373fbbce 1779 return smiapp_pll_update(sensor);
e91cbeb2
SA		 1780}
1781
1782static int smiapp_set_format(struct v4l2_subdev *subdev,
1783 struct v4l2_subdev_fh *fh,
1784 struct v4l2_subdev_format *fmt)
1785{
1786 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1787 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1788 struct v4l2_rect *crops[SMIAPP_PADS];
1789
1790 mutex_lock(&sensor->mutex);
1791
1792 if (fmt->pad == ssd->source_pad) {
1793 int rval;
1794
1795 rval = smiapp_set_format_source(subdev, fh, fmt);
1796
1797 mutex_unlock(&sensor->mutex);
1798
1799 return rval;
ccfc97bd
SA		 1800 }
1801
1802 /* Sink pad. Width and height are changeable here. */
1803 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1804 fmt->format.width &= ~1;
1805 fmt->format.height &= ~1;
7ed0b291 1806 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1807
1808 fmt->format.width =
1809 clamp(fmt->format.width,
1810 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
1811 sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]);
1812 fmt->format.height =
1813 clamp(fmt->format.height,
1814 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
1815 sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]);
1816
1817 smiapp_get_crop_compose(subdev, fh, crops, NULL, fmt->which);
1818
1819 crops[ssd->sink_pad]->left = 0;
1820 crops[ssd->sink_pad]->top = 0;
1821 crops[ssd->sink_pad]->width = fmt->format.width;
1822 crops[ssd->sink_pad]->height = fmt->format.height;
1823 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1824 ssd->sink_fmt = *crops[ssd->sink_pad];
1825 smiapp_propagate(subdev, fh, fmt->which,
5689b288 1826 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 1827
1828 mutex_unlock(&sensor->mutex);
1829
1830 return 0;
1831}
1832
1833/*
1834 * Calculate goodness of scaled image size compared to expected image
1835 * size and flags provided.
1836 */
1837#define SCALING_GOODNESS 100000
1838#define SCALING_GOODNESS_EXTREME 100000000
1839static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
1840 int h, int ask_h, u32 flags)
1841{
1842 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1843 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1844 int val = 0;
1845
1846 w &= ~1;
1847 ask_w &= ~1;
1848 h &= ~1;
1849 ask_h &= ~1;
1850
563df3d0 1851 if (flags & V4L2_SEL_FLAG_GE) {
ccfc97bd
SA		 1852 if (w < ask_w)
1853 val -= SCALING_GOODNESS;
1854 if (h < ask_h)
1855 val -= SCALING_GOODNESS;
1856 }
1857
563df3d0 1858 if (flags & V4L2_SEL_FLAG_LE) {
ccfc97bd
SA		 1859 if (w > ask_w)
1860 val -= SCALING_GOODNESS;
1861 if (h > ask_h)
1862 val -= SCALING_GOODNESS;
1863 }
1864
1865 val -= abs(w - ask_w);
1866 val -= abs(h - ask_h);
1867
1868 if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE])
1869 val -= SCALING_GOODNESS_EXTREME;
1870
1871 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
1872 w, ask_h, h, ask_h, val);
1873
1874 return val;
1875}
1876
1877static void smiapp_set_compose_binner(struct v4l2_subdev *subdev,
1878 struct v4l2_subdev_fh *fh,
1879 struct v4l2_subdev_selection *sel,
1880 struct v4l2_rect **crops,
1881 struct v4l2_rect *comp)
1882{
1883 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1884 unsigned int i;
1885 unsigned int binh = 1, binv = 1;
aca6bf54 1886 int best = scaling_goodness(
ccfc97bd
SA		 1887 subdev,
1888 crops[SMIAPP_PAD_SINK]->width, sel->r.width,
1889 crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags);
1890
1891 for (i = 0; i < sensor->nbinning_subtypes; i++) {
1892 int this = scaling_goodness(
1893 subdev,
1894 crops[SMIAPP_PAD_SINK]->width
1895 / sensor->binning_subtypes[i].horizontal,
1896 sel->r.width,
1897 crops[SMIAPP_PAD_SINK]->height
1898 / sensor->binning_subtypes[i].vertical,
1899 sel->r.height, sel->flags);
1900
1901 if (this > best) {
1902 binh = sensor->binning_subtypes[i].horizontal;
1903 binv = sensor->binning_subtypes[i].vertical;
1904 best = this;
1905 }
1906 }
1907 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1908 sensor->binning_vertical = binv;
1909 sensor->binning_horizontal = binh;
1910 }
1911
1912 sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1;
1913 sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1;
1914}
1915
1916/*
1917 * Calculate best scaling ratio and mode for given output resolution.
1918 *
1919 * Try all of these: horizontal ratio, vertical ratio and smallest
1920 * size possible (horizontally).
1921 *
1922 * Also try whether horizontal scaler or full scaler gives a better
1923 * result.
1924 */
1925static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev,
1926 struct v4l2_subdev_fh *fh,
1927 struct v4l2_subdev_selection *sel,
1928 struct v4l2_rect **crops,
1929 struct v4l2_rect *comp)
1930{
1931 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1932 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1933 u32 min, max, a, b, max_m;
1934 u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
1935 int mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1936 u32 try[4];
1937 u32 ntry = 0;
1938 unsigned int i;
1939 int best = INT_MIN;
1940
1941 sel->r.width = min_t(unsigned int, sel->r.width,
1942 crops[SMIAPP_PAD_SINK]->width);
1943 sel->r.height = min_t(unsigned int, sel->r.height,
1944 crops[SMIAPP_PAD_SINK]->height);
1945
1946 a = crops[SMIAPP_PAD_SINK]->width
1947 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width;
1948 b = crops[SMIAPP_PAD_SINK]->height
1949 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height;
1950 max_m = crops[SMIAPP_PAD_SINK]->width
1951 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]
1952 / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE];
1953
7be5c289
AS		 1954 a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1955 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1956 b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1957 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1958 max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1959 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
ccfc97bd
SA		 1960
1961 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
1962
1963 min = min(max_m, min(a, b));
1964 max = min(max_m, max(a, b));
1965
1966 try[ntry] = min;
1967 ntry++;
1968 if (min != max) {
1969 try[ntry] = max;
1970 ntry++;
1971 }
1972 if (max != max_m) {
1973 try[ntry] = min + 1;
1974 ntry++;
1975 if (min != max) {
1976 try[ntry] = max + 1;
1977 ntry++;
1978 }
1979 }
1980
1981 for (i = 0; i < ntry; i++) {
1982 int this = scaling_goodness(
1983 subdev,
1984 crops[SMIAPP_PAD_SINK]->width
1985 / try[i]
1986 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1987 sel->r.width,
1988 crops[SMIAPP_PAD_SINK]->height,
1989 sel->r.height,
1990 sel->flags);
1991
1992 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
1993
1994 if (this > best) {
1995 scale_m = try[i];
1996 mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1997 best = this;
1998 }
1999
2000 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2001 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2002 continue;
2003
2004 this = scaling_goodness(
2005 subdev, crops[SMIAPP_PAD_SINK]->width
2006 / try[i]
2007 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2008 sel->r.width,
2009 crops[SMIAPP_PAD_SINK]->height
2010 / try[i]
2011 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
2012 sel->r.height,
2013 sel->flags);
2014
2015 if (this > best) {
2016 scale_m = try[i];
2017 mode = SMIAPP_SCALING_MODE_BOTH;
2018 best = this;
2019 }
2020 }
2021
2022 sel->r.width =
2023 (crops[SMIAPP_PAD_SINK]->width
2024 / scale_m
2025 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1;
2026 if (mode == SMIAPP_SCALING_MODE_BOTH)
2027 sel->r.height =
2028 (crops[SMIAPP_PAD_SINK]->height
2029 / scale_m
2030 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN])
2031 & ~1;
2032 else
2033 sel->r.height = crops[SMIAPP_PAD_SINK]->height;
2034
2035 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2036 sensor->scale_m = scale_m;
2037 sensor->scaling_mode = mode;
2038 }
2039}
2040/* We're only called on source pads. This function sets scaling. */
2041static int smiapp_set_compose(struct v4l2_subdev *subdev,
2042 struct v4l2_subdev_fh *fh,
2043 struct v4l2_subdev_selection *sel)
2044{
2045 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2046 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2047 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2048
2049 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
2050
2051 sel->r.top = 0;
2052 sel->r.left = 0;
2053
2054 if (ssd == sensor->binner)
2055 smiapp_set_compose_binner(subdev, fh, sel, crops, comp);
2056 else
2057 smiapp_set_compose_scaler(subdev, fh, sel, crops, comp);
2058
2059 *comp = sel->r;
2060 smiapp_propagate(subdev, fh, sel->which,
5689b288 2061 V4L2_SEL_TGT_COMPOSE);
ccfc97bd
SA		 2062
2063 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
2064 return smiapp_update_mode(sensor);
2065
2066 return 0;
2067}
2068
2069static int __smiapp_sel_supported(struct v4l2_subdev *subdev,
2070 struct v4l2_subdev_selection *sel)
2071{
2072 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2073 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2074
2075 /* We only implement crop in three places. */
2076 switch (sel->target) {
5689b288
SA		 2077 case V4L2_SEL_TGT_CROP:
2078 case V4L2_SEL_TGT_CROP_BOUNDS:
ccfc97bd
SA		 2079 if (ssd == sensor->pixel_array
2080 && sel->pad == SMIAPP_PA_PAD_SRC)
2081 return 0;
2082 if (ssd == sensor->src
2083 && sel->pad == SMIAPP_PAD_SRC)
2084 return 0;
2085 if (ssd == sensor->scaler
2086 && sel->pad == SMIAPP_PAD_SINK
2087 && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2088 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
2089 return 0;
2090 return -EINVAL;
b518d866
SA		 2091 case V4L2_SEL_TGT_NATIVE_SIZE:
2092 if (ssd == sensor->pixel_array
2093 && sel->pad == SMIAPP_PA_PAD_SRC)
2094 return 0;
2095 return -EINVAL;
5689b288
SA		 2096 case V4L2_SEL_TGT_COMPOSE:
2097 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 2098 if (sel->pad == ssd->source_pad)
2099 return -EINVAL;
2100 if (ssd == sensor->binner)
2101 return 0;
2102 if (ssd == sensor->scaler
2103 && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2104 != SMIAPP_SCALING_CAPABILITY_NONE)
2105 return 0;
2106 /* Fall through */
2107 default:
2108 return -EINVAL;
2109 }
2110}
2111
2112static int smiapp_set_crop(struct v4l2_subdev *subdev,
2113 struct v4l2_subdev_fh *fh,
2114 struct v4l2_subdev_selection *sel)
2115{
2116 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2117 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2118 struct v4l2_rect *src_size, *crops[SMIAPP_PADS];
2119 struct v4l2_rect _r;
2120
2121 smiapp_get_crop_compose(subdev, fh, crops, NULL, sel->which);
2122
2123 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2124 if (sel->pad == ssd->sink_pad)
2125 src_size = &ssd->sink_fmt;
2126 else
2127 src_size = &ssd->compose;
2128 } else {
2129 if (sel->pad == ssd->sink_pad) {
2130 _r.left = 0;
2131 _r.top = 0;
2132 _r.width = v4l2_subdev_get_try_format(fh, sel->pad)
2133 ->width;
2134 _r.height = v4l2_subdev_get_try_format(fh, sel->pad)
2135 ->height;
2136 src_size = &_r;
2137 } else {
2138 src_size =
2139 v4l2_subdev_get_try_compose(
2140 fh, ssd->sink_pad);
2141 }
2142 }
2143
2144 if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) {
2145 sel->r.left = 0;
2146 sel->r.top = 0;
2147 }
2148
2149 sel->r.width = min(sel->r.width, src_size->width);
2150 sel->r.height = min(sel->r.height, src_size->height);
2151
f90580ca
RR		 2152 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2153 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
ccfc97bd
SA		 2154
2155 *crops[sel->pad] = sel->r;
2156
2157 if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK)
2158 smiapp_propagate(subdev, fh, sel->which,
5689b288 2159 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 2160
2161 return 0;
2162}
2163
2164static int __smiapp_get_selection(struct v4l2_subdev *subdev,
2165 struct v4l2_subdev_fh *fh,
2166 struct v4l2_subdev_selection *sel)
2167{
2168 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2169 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2170 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2171 struct v4l2_rect sink_fmt;
2172 int ret;
2173
2174 ret = __smiapp_sel_supported(subdev, sel);
2175 if (ret)
2176 return ret;
2177
2178 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
2179
2180 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2181 sink_fmt = ssd->sink_fmt;
2182 } else {
2183 struct v4l2_mbus_framefmt *fmt =
2184 v4l2_subdev_get_try_format(fh, ssd->sink_pad);
2185
2186 sink_fmt.left = 0;
2187 sink_fmt.top = 0;
2188 sink_fmt.width = fmt->width;
2189 sink_fmt.height = fmt->height;
2190 }
2191
2192 switch (sel->target) {
5689b288 2193 case V4L2_SEL_TGT_CROP_BOUNDS:
b518d866 2194 case V4L2_SEL_TGT_NATIVE_SIZE:
ccfc97bd 2195 if (ssd == sensor->pixel_array) {
21734b06 2196 sel->r.left = sel->r.top = 0;
ccfc97bd
SA		 2197 sel->r.width =
2198 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2199 sel->r.height =
2200 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2201 } else if (sel->pad == ssd->sink_pad) {
2202 sel->r = sink_fmt;
2203 } else {
2204 sel->r = *comp;
2205 }
2206 break;
5689b288
SA		 2207 case V4L2_SEL_TGT_CROP:
2208 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 2209 sel->r = *crops[sel->pad];
2210 break;
5689b288 2211 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2212 sel->r = *comp;
2213 break;
2214 }
2215
2216 return 0;
2217}
2218
2219static int smiapp_get_selection(struct v4l2_subdev *subdev,
2220 struct v4l2_subdev_fh *fh,
2221 struct v4l2_subdev_selection *sel)
2222{
2223 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2224 int rval;
2225
2226 mutex_lock(&sensor->mutex);
2227 rval = __smiapp_get_selection(subdev, fh, sel);
2228 mutex_unlock(&sensor->mutex);
2229
2230 return rval;
2231}
2232static int smiapp_set_selection(struct v4l2_subdev *subdev,
2233 struct v4l2_subdev_fh *fh,
2234 struct v4l2_subdev_selection *sel)
2235{
2236 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2237 int ret;
2238
2239 ret = __smiapp_sel_supported(subdev, sel);
2240 if (ret)
2241 return ret;
2242
2243 mutex_lock(&sensor->mutex);
2244
2245 sel->r.left = max(0, sel->r.left & ~1);
2246 sel->r.top = max(0, sel->r.top & ~1);
f90580ca
RR		 2247 sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
2248 sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
ccfc97bd
SA		 2249
2250 sel->r.width = max_t(unsigned int,
2251 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
2252 sel->r.width);
2253 sel->r.height = max_t(unsigned int,
2254 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
2255 sel->r.height);
2256
2257 switch (sel->target) {
5689b288 2258 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 2259 ret = smiapp_set_crop(subdev, fh, sel);
2260 break;
5689b288 2261 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2262 ret = smiapp_set_compose(subdev, fh, sel);
2263 break;
2264 default:
b31eb901 2265 ret = -EINVAL;
ccfc97bd
SA		 2266 }
2267
2268 mutex_unlock(&sensor->mutex);
2269 return ret;
2270}
2271
2272static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2273{
2274 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2275
2276 *frames = sensor->frame_skip;
2277 return 0;
2278}
2279
2280/* -----------------------------------------------------------------------------
2281 * sysfs attributes
2282 */
2283
2284static ssize_t
2285smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2286 char *buf)
2287{
2288 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2289 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2290 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2291 unsigned int nbytes;
2292
2293 if (!sensor->dev_init_done)
2294 return -EBUSY;
2295
2296 if (!sensor->nvm_size) {
2297 /* NVM not read yet - read it now */
2298 sensor->nvm_size = sensor->platform_data->nvm_size;
2299 if (smiapp_set_power(subdev, 1) < 0)
2300 return -ENODEV;
2301 if (smiapp_read_nvm(sensor, sensor->nvm)) {
2302 dev_err(&client->dev, "nvm read failed\n");
2303 return -ENODEV;
2304 }
2305 smiapp_set_power(subdev, 0);
2306 }
2307 /*
2308 * NVM is still way below a PAGE_SIZE, so we can safely
2309 * assume this for now.
2310 */
2311 nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE);
2312 memcpy(buf, sensor->nvm, nbytes);
2313
2314 return nbytes;
2315}
2316static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL);
2317
eba66b3e
SA		 2318static ssize_t
2319smiapp_sysfs_ident_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 smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2324 struct smiapp_module_info *minfo = &sensor->minfo;
2325
2326 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2327 minfo->manufacturer_id, minfo->model_id,
2328 minfo->revision_number_major) + 1;
2329}
2330
2331static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL);
2332
ccfc97bd
SA		 2333/* -----------------------------------------------------------------------------
2334 * V4L2 subdev core operations
2335 */
2336
4c944684 2337static int smiapp_identify_module(struct smiapp_sensor *sensor)
ccfc97bd 2338{
4c944684 2339 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
ccfc97bd
SA		 2340 struct smiapp_module_info *minfo = &sensor->minfo;
2341 unsigned int i;
2342 int rval = 0;
2343
2344 minfo->name = SMIAPP_NAME;
2345
2346 /* Module info */
98add8e8
SA		 2347 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
2348 &minfo->manufacturer_id);
ccfc97bd 2349 if (!rval)
98add8e8
SA		 2350 rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
2351 &minfo->model_id);
ccfc97bd 2352 if (!rval)
98add8e8
SA		 2353 rval = smiapp_read_8only(sensor,
2354 SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
2355 &minfo->revision_number_major);
ccfc97bd 2356 if (!rval)
98add8e8
SA		 2357 rval = smiapp_read_8only(sensor,
2358 SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
2359 &minfo->revision_number_minor);
ccfc97bd 2360 if (!rval)
98add8e8
SA		 2361 rval = smiapp_read_8only(sensor,
2362 SMIAPP_REG_U8_MODULE_DATE_YEAR,
2363 &minfo->module_year);
ccfc97bd 2364 if (!rval)
98add8e8
SA		 2365 rval = smiapp_read_8only(sensor,
2366 SMIAPP_REG_U8_MODULE_DATE_MONTH,
2367 &minfo->module_month);
ccfc97bd 2368 if (!rval)
98add8e8
SA		 2369 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
2370 &minfo->module_day);
ccfc97bd
SA		 2371
2372 /* Sensor info */
2373 if (!rval)
98add8e8
SA		 2374 rval = smiapp_read_8only(sensor,
2375 SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
2376 &minfo->sensor_manufacturer_id);
ccfc97bd 2377 if (!rval)
98add8e8
SA		 2378 rval = smiapp_read_8only(sensor,
2379 SMIAPP_REG_U16_SENSOR_MODEL_ID,
2380 &minfo->sensor_model_id);
ccfc97bd 2381 if (!rval)
98add8e8
SA		 2382 rval = smiapp_read_8only(sensor,
2383 SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
2384 &minfo->sensor_revision_number);
ccfc97bd 2385 if (!rval)
98add8e8
SA		 2386 rval = smiapp_read_8only(sensor,
2387 SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
2388 &minfo->sensor_firmware_version);
ccfc97bd
SA		 2389
2390 /* SMIA */
2391 if (!rval)
98add8e8
SA		 2392 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2393 &minfo->smia_version);
ccfc97bd 2394 if (!rval)
98add8e8
SA		 2395 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2396 &minfo->smiapp_version);
ccfc97bd
SA		 2397
2398 if (rval) {
2399 dev_err(&client->dev, "sensor detection failed\n");
2400 return -ENODEV;
2401 }
2402
2403 dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n",
2404 minfo->manufacturer_id, minfo->model_id);
2405
2406 dev_dbg(&client->dev,
2407 "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n",
2408 minfo->revision_number_major, minfo->revision_number_minor,
2409 minfo->module_year, minfo->module_month, minfo->module_day);
2410
2411 dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n",
2412 minfo->sensor_manufacturer_id, minfo->sensor_model_id);
2413
2414 dev_dbg(&client->dev,
2415 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2416 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2417
2418 dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n",
2419 minfo->smia_version, minfo->smiapp_version);
2420
2421 /*
2422 * Some modules have bad data in the lvalues below. Hope the
2423 * rvalues have better stuff. The lvalues are module
2424 * parameters whereas the rvalues are sensor parameters.
2425 */
2426 if (!minfo->manufacturer_id && !minfo->model_id) {
2427 minfo->manufacturer_id = minfo->sensor_manufacturer_id;
2428 minfo->model_id = minfo->sensor_model_id;
2429 minfo->revision_number_major = minfo->sensor_revision_number;
2430 }
2431
2432 for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) {
2433 if (smiapp_module_idents[i].manufacturer_id
2434 != minfo->manufacturer_id)
2435 continue;
2436 if (smiapp_module_idents[i].model_id != minfo->model_id)
2437 continue;
2438 if (smiapp_module_idents[i].flags
2439 & SMIAPP_MODULE_IDENT_FLAG_REV_LE) {
2440 if (smiapp_module_idents[i].revision_number_major
2441 < minfo->revision_number_major)
2442 continue;
2443 } else {
2444 if (smiapp_module_idents[i].revision_number_major
2445 != minfo->revision_number_major)
2446 continue;
2447 }
2448
2449 minfo->name = smiapp_module_idents[i].name;
2450 minfo->quirk = smiapp_module_idents[i].quirk;
2451 break;
2452 }
2453
2454 if (i >= ARRAY_SIZE(smiapp_module_idents))
2455 dev_warn(&client->dev,
2456 "no quirks for this module; let's hope it's fully compliant\n");
2457
2458 dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n",
2459 minfo->name, minfo->manufacturer_id, minfo->model_id,
2460 minfo->revision_number_major);
2461
ccfc97bd
SA		 2462 return 0;
2463}
2464
2465static const struct v4l2_subdev_ops smiapp_ops;
2466static const struct v4l2_subdev_internal_ops smiapp_internal_ops;
2467static const struct media_entity_operations smiapp_entity_ops;
2468
7095108b
SA		 2469static int smiapp_register_subdevs(struct smiapp_sensor *sensor)
2470{
2471 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2472 struct smiapp_subdev *ssds[] = {
2473 sensor->scaler,
2474 sensor->binner,
2475 sensor->pixel_array,
2476 };
2477 unsigned int i;
2478 int rval;
2479
2480 for (i = 0; i < SMIAPP_SUBDEVS - 1; i++) {
2481 struct smiapp_subdev *this = ssds[i + 1];
2482 struct smiapp_subdev *last = ssds[i];
2483
2484 if (!last)
2485 continue;
2486
2487 rval = media_entity_init(&this->sd.entity,
2488 this->npads, this->pads, 0);
2489 if (rval) {
2490 dev_err(&client->dev,
2491 "media_entity_init failed\n");
2492 return rval;
2493 }
2494
2495 rval = media_entity_create_link(&this->sd.entity,
2496 this->source_pad,
2497 &last->sd.entity,
2498 last->sink_pad,
2499 MEDIA_LNK_FL_ENABLED |
2500 MEDIA_LNK_FL_IMMUTABLE);
2501 if (rval) {
2502 dev_err(&client->dev,
2503 "media_entity_create_link failed\n");
2504 return rval;
2505 }
2506
2507 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev,
2508 &this->sd);
2509 if (rval) {
2510 dev_err(&client->dev,
2511 "v4l2_device_register_subdev failed\n");
2512 return rval;
2513 }
2514 }
2515
2516 return 0;
2517}
2518
4c944684 2519static void smiapp_cleanup(struct smiapp_sensor *sensor)
ccfc97bd 2520{
4c944684
SA		 2521 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
2522
2523 device_remove_file(&client->dev, &dev_attr_nvm);
2524 device_remove_file(&client->dev, &dev_attr_ident);
2525}
2526
2527static int smiapp_init(struct smiapp_sensor *sensor)
2528{
2529 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1e9240b3 2530 struct smiapp_pll *pll = &sensor->pll;
ccfc97bd
SA		 2531 struct smiapp_subdev *last = NULL;
2532 u32 tmp;
2533 unsigned int i;
2534 int rval;
2535
5fba9888 2536 sensor->vana = devm_regulator_get(&client->dev, "vana");
ccfc97bd
SA		 2537 if (IS_ERR(sensor->vana)) {
2538 dev_err(&client->dev, "could not get regulator for vana\n");
24644035 2539 return PTR_ERR(sensor->vana);
ccfc97bd
SA		 2540 }
2541
2547428d 2542 if (!sensor->platform_data->set_xclk) {
575ea5b3 2543 sensor->ext_clk = devm_clk_get(&client->dev, NULL);
2547428d 2544 if (IS_ERR(sensor->ext_clk)) {
a354177f 2545 dev_err(&client->dev, "could not get clock\n");
24644035 2546 return PTR_ERR(sensor->ext_clk);
2547428d
SA		 2547 }
2548
2549 rval = clk_set_rate(sensor->ext_clk,
2550 sensor->platform_data->ext_clk);
2551 if (rval < 0) {
2552 dev_err(&client->dev,
a354177f 2553 "unable to set clock freq to %u\n",
2547428d 2554 sensor->platform_data->ext_clk);
24644035 2555 return rval;
2547428d
SA		 2556 }
2557 }
2558
9945374e 2559 if (gpio_is_valid(sensor->platform_data->xshutdown)) {
24644035
SA		 2560 rval = devm_gpio_request_one(
2561 &client->dev, sensor->platform_data->xshutdown, 0,
2562 "SMIA++ xshutdown");
2563 if (rval < 0) {
ccfc97bd
SA		 2564 dev_err(&client->dev,
2565 "unable to acquire reset gpio %d\n",
2566 sensor->platform_data->xshutdown);
24644035 2567 return rval;
ccfc97bd
SA		 2568 }
2569 }
2570
2571 rval = smiapp_power_on(sensor);
b015ba29
LP		 2572 if (rval)
2573 return -ENODEV;
ccfc97bd 2574
4c944684 2575 rval = smiapp_identify_module(sensor);
ccfc97bd
SA		 2576 if (rval) {
2577 rval = -ENODEV;
2578 goto out_power_off;
2579 }
2580
2581 rval = smiapp_get_all_limits(sensor);
2582 if (rval) {
2583 rval = -ENODEV;
2584 goto out_power_off;
2585 }
2586
2587 /*
2588 * Handle Sensor Module orientation on the board.
2589 *
2590 * The application of H-FLIP and V-FLIP on the sensor is modified by
2591 * the sensor orientation on the board.
2592 *
2593 * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
2594 * both H-FLIP and V-FLIP for normal operation which also implies
2595 * that a set/unset operation for user space HFLIP and VFLIP v4l2
2596 * controls will need to be internally inverted.
2597 *
2598 * Rotation also changes the bayer pattern.
2599 */
2600 if (sensor->platform_data->module_board_orient ==
2601 SMIAPP_MODULE_BOARD_ORIENT_180)
2602 sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP |
2603 SMIAPP_IMAGE_ORIENTATION_VFLIP;
2604
e5a3f7b8
SA		 2605 rval = smiapp_call_quirk(sensor, limits);
2606 if (rval) {
2607 dev_err(&client->dev, "limits quirks failed\n");
2608 goto out_power_off;
2609 }
2610
ccfc97bd
SA		 2611 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) {
2612 u32 val;
2613
1e73eea7 2614 rval = smiapp_read(sensor,
ccfc97bd
SA		 2615 SMIAPP_REG_U8_BINNING_SUBTYPES, &val);
2616 if (rval < 0) {
2617 rval = -ENODEV;
2618 goto out_power_off;
2619 }
2620 sensor->nbinning_subtypes = min_t(u8, val,
2621 SMIAPP_BINNING_SUBTYPES);
2622
2623 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2624 rval = smiapp_read(
1e73eea7 2625 sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val);
ccfc97bd
SA		 2626 if (rval < 0) {
2627 rval = -ENODEV;
2628 goto out_power_off;
2629 }
2630 sensor->binning_subtypes[i] =
2631 *(struct smiapp_binning_subtype *)&val;
2632
2633 dev_dbg(&client->dev, "binning %xx%x\n",
2634 sensor->binning_subtypes[i].horizontal,
2635 sensor->binning_subtypes[i].vertical);
2636 }
2637 }
2638 sensor->binning_horizontal = 1;
2639 sensor->binning_vertical = 1;
2640
eba66b3e
SA		 2641 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
2642 dev_err(&client->dev, "sysfs ident entry creation failed\n");
2643 rval = -ENOENT;
2644 goto out_power_off;
2645 }
ccfc97bd
SA		 2646 /* SMIA++ NVM initialization - it will be read from the sensor
2647 * when it is first requested by userspace.
2648 */
2649 if (sensor->minfo.smiapp_version && sensor->platform_data->nvm_size) {
31c1d17b
SK		 2650 sensor->nvm = devm_kzalloc(&client->dev,
2651 sensor->platform_data->nvm_size, GFP_KERNEL);
ccfc97bd
SA		 2652 if (sensor->nvm == NULL) {
2653 dev_err(&client->dev, "nvm buf allocation failed\n");
2654 rval = -ENOMEM;
4c944684 2655 goto out_cleanup;
ccfc97bd
SA		 2656 }
2657
2658 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
2659 dev_err(&client->dev, "sysfs nvm entry failed\n");
2660 rval = -EBUSY;
4c944684 2661 goto out_cleanup;
ccfc97bd
SA		 2662 }
2663 }
2664
ccfc97bd
SA		 2665 /* We consider this as profile 0 sensor if any of these are zero. */
2666 if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] ||
2667 !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] ||
2668 !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] ||
2669 !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) {
2670 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0;
2671 } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2672 != SMIAPP_SCALING_CAPABILITY_NONE) {
2673 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2674 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2675 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1;
2676 else
2677 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2;
2678 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2679 sensor->ssds_used++;
2680 } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2681 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
2682 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2683 sensor->ssds_used++;
2684 }
2685 sensor->binner = &sensor->ssds[sensor->ssds_used];
2686 sensor->ssds_used++;
2687 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
2688 sensor->ssds_used++;
2689
2690 sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2691
38a833c7
SA		 2692 /* prepare PLL configuration input values */
2693 pll->bus_type = SMIAPP_PLL_BUS_TYPE_CSI2;
2694 pll->csi2.lanes = sensor->platform_data->lanes;
2695 pll->ext_clk_freq_hz = sensor->platform_data->ext_clk;
2696 pll->flags = smiapp_call_quirk(sensor, pll_flags);
2697 pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2698 /* Profile 0 sensors have no separate OP clock branch. */
2699 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
2700 pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
2701
2702 rval = smiapp_get_mbus_formats(sensor);
2703 if (rval) {
2704 rval = -ENODEV;
4c944684 2705 goto out_cleanup;
38a833c7
SA		 2706 }
2707
ccfc97bd
SA		 2708 for (i = 0; i < SMIAPP_SUBDEVS; i++) {
2709 struct {
2710 struct smiapp_subdev *ssd;
2711 char *name;
2712 } const __this[] = {
2713 { sensor->scaler, "scaler", },
2714 { sensor->binner, "binner", },
2715 { sensor->pixel_array, "pixel array", },
2716 }, *_this = &__this[i];
2717 struct smiapp_subdev *this = _this->ssd;
2718
2719 if (!this)
2720 continue;
2721
2722 if (this != sensor->src)
2723 v4l2_subdev_init(&this->sd, &smiapp_ops);
2724
2725 this->sensor = sensor;
2726
2727 if (this == sensor->pixel_array) {
2728 this->npads = 1;
2729 } else {
2730 this->npads = 2;
2731 this->source_pad = 1;
2732 }
2733
2734 snprintf(this->sd.name,
f8d36b89
SA		 2735 sizeof(this->sd.name), "%s %s %d-%4.4x",
2736 sensor->minfo.name, _this->name,
2737 i2c_adapter_id(client->adapter), client->addr);
ccfc97bd
SA		 2738
2739 this->sink_fmt.width =
2740 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2741 this->sink_fmt.height =
2742 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2743 this->compose.width = this->sink_fmt.width;
2744 this->compose.height = this->sink_fmt.height;
2745 this->crop[this->source_pad] = this->compose;
2746 this->pads[this->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2747 if (this != sensor->pixel_array) {
2748 this->crop[this->sink_pad] = this->compose;
2749 this->pads[this->sink_pad].flags = MEDIA_PAD_FL_SINK;
2750 }
2751
2752 this->sd.entity.ops = &smiapp_entity_ops;
2753
2754 if (last == NULL) {
2755 last = this;
2756 continue;
2757 }
2758
2759 this->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2760 this->sd.internal_ops = &smiapp_internal_ops;
60b31b72 2761 this->sd.owner = THIS_MODULE;
ccfc97bd
SA		 2762 v4l2_set_subdevdata(&this->sd, client);
2763
ccfc97bd
SA		 2764 last = this;
2765 }
2766
2767 dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
2768
2769 sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
2770
2771 /* final steps */
2772 smiapp_read_frame_fmt(sensor);
2773 rval = smiapp_init_controls(sensor);
2774 if (rval < 0)
4c944684 2775 goto out_cleanup;
ccfc97bd 2776
f85698cd 2777 mutex_lock(&sensor->mutex);
ccfc97bd 2778 rval = smiapp_update_mode(sensor);
f85698cd 2779 mutex_unlock(&sensor->mutex);
ccfc97bd
SA		 2780 if (rval) {
2781 dev_err(&client->dev, "update mode failed\n");
4c944684 2782 goto out_cleanup;
ccfc97bd
SA		 2783 }
2784
2785 sensor->streaming = false;
2786 sensor->dev_init_done = true;
2787
2788 /* check flash capability */
1e73eea7 2789 rval = smiapp_read(sensor, SMIAPP_REG_U8_FLASH_MODE_CAPABILITY, &tmp);
ccfc97bd
SA		 2790 sensor->flash_capability = tmp;
2791 if (rval)
4c944684 2792 goto out_cleanup;
ccfc97bd
SA		 2793
2794 smiapp_power_off(sensor);
2795
2796 return 0;
2797
4c944684
SA		 2798out_cleanup:
2799 smiapp_cleanup(sensor);
eba66b3e 2800
ccfc97bd 2801out_power_off:
ccfc97bd 2802 smiapp_power_off(sensor);
ccfc97bd
SA		 2803 return rval;
2804}
2805
4c944684
SA		 2806static int smiapp_registered(struct v4l2_subdev *subdev)
2807{
2808 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2809 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2810 int rval;
2811
2812 if (!client->dev.of_node) {
2813 rval = smiapp_init(sensor);
2814 if (rval)
2815 return rval;
2816 }
2817
2818 rval = smiapp_register_subdevs(sensor);
2819 if (rval)
2820 smiapp_cleanup(sensor);
2821
2822 return rval;
2823}
2824
ccfc97bd
SA		 2825static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2826{
2827 struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
2828 struct smiapp_sensor *sensor = ssd->sensor;
2829 u32 mbus_code =
2830 smiapp_csi_data_formats[smiapp_pixel_order(sensor)].code;
2831 unsigned int i;
2832
2833 mutex_lock(&sensor->mutex);
2834
2835 for (i = 0; i < ssd->npads; i++) {
2836 struct v4l2_mbus_framefmt *try_fmt =
2837 v4l2_subdev_get_try_format(fh, i);
2838 struct v4l2_rect *try_crop = v4l2_subdev_get_try_crop(fh, i);
2839 struct v4l2_rect *try_comp;
2840
2841 try_fmt->width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2842 try_fmt->height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2843 try_fmt->code = mbus_code;
7ed0b291 2844 try_fmt->field = V4L2_FIELD_NONE;
ccfc97bd
SA		 2845
2846 try_crop->top = 0;
2847 try_crop->left = 0;
2848 try_crop->width = try_fmt->width;
2849 try_crop->height = try_fmt->height;
2850
2851 if (ssd != sensor->pixel_array)
2852 continue;
2853
2854 try_comp = v4l2_subdev_get_try_compose(fh, i);
2855 *try_comp = *try_crop;
2856 }
2857
2858 mutex_unlock(&sensor->mutex);
2859
2860 return smiapp_set_power(sd, 1);
2861}
2862
2863static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2864{
2865 return smiapp_set_power(sd, 0);
2866}
2867
2868static const struct v4l2_subdev_video_ops smiapp_video_ops = {
2869 .s_stream = smiapp_set_stream,
2870};
2871
2872static const struct v4l2_subdev_core_ops smiapp_core_ops = {
2873 .s_power = smiapp_set_power,
2874};
2875
2876static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
2877 .enum_mbus_code = smiapp_enum_mbus_code,
2878 .get_fmt = smiapp_get_format,
2879 .set_fmt = smiapp_set_format,
2880 .get_selection = smiapp_get_selection,
2881 .set_selection = smiapp_set_selection,
2882};
2883
2884static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
2885 .g_skip_frames = smiapp_get_skip_frames,
2886};
2887
2888static const struct v4l2_subdev_ops smiapp_ops = {
2889 .core = &smiapp_core_ops,
2890 .video = &smiapp_video_ops,
2891 .pad = &smiapp_pad_ops,
2892 .sensor = &smiapp_sensor_ops,
2893};
2894
2895static const struct media_entity_operations smiapp_entity_ops = {
2896 .link_validate = v4l2_subdev_link_validate,
2897};
2898
2899static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
2900 .registered = smiapp_registered,
2901 .open = smiapp_open,
2902 .close = smiapp_close,
2903};
2904
2905static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
2906 .open = smiapp_open,
2907 .close = smiapp_close,
2908};
2909
2910/* -----------------------------------------------------------------------------
2911 * I2C Driver
2912 */
2913
2914#ifdef CONFIG_PM
2915
2916static int smiapp_suspend(struct device *dev)
2917{
2918 struct i2c_client *client = to_i2c_client(dev);
2919 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2920 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2921 bool streaming;
2922
2923 BUG_ON(mutex_is_locked(&sensor->mutex));
2924
2925 if (sensor->power_count == 0)
2926 return 0;
2927
2928 if (sensor->streaming)
2929 smiapp_stop_streaming(sensor);
2930
2931 streaming = sensor->streaming;
2932
2933 smiapp_power_off(sensor);
2934
2935 /* save state for resume */
2936 sensor->streaming = streaming;
2937
2938 return 0;
2939}
2940
2941static int smiapp_resume(struct device *dev)
2942{
2943 struct i2c_client *client = to_i2c_client(dev);
2944 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2945 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2946 int rval;
2947
2948 if (sensor->power_count == 0)
2949 return 0;
2950
2951 rval = smiapp_power_on(sensor);
2952 if (rval)
2953 return rval;
2954
2955 if (sensor->streaming)
2956 rval = smiapp_start_streaming(sensor);
2957
2958 return rval;
2959}
2960
2961#else
2962
2963#define smiapp_suspend NULL
2964#define smiapp_resume NULL
2965
2966#endif /* CONFIG_PM */
2967
390a5fa5
SA		 2968static struct smiapp_platform_data *smiapp_get_pdata(struct device *dev)
2969{
2970 struct smiapp_platform_data *pdata;
2971 struct v4l2_of_endpoint bus_cfg;
2972 struct device_node *ep;
2973 struct property *prop;
2974 __be32 *val;
2975 uint32_t asize;
2976 unsigned int i;
2977 int rval;
2978
2979 if (!dev->of_node)
2980 return dev->platform_data;
2981
2982 ep = of_graph_get_next_endpoint(dev->of_node, NULL);
2983 if (!ep)
2984 return NULL;
2985
2986 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
2987 if (!pdata) {
2988 rval = -ENOMEM;
2989 goto out_err;
2990 }
2991
2992 v4l2_of_parse_endpoint(ep, &bus_cfg);
2993
2994 switch (bus_cfg.bus_type) {
2995 case V4L2_MBUS_CSI2:
2996 pdata->csi_signalling_mode = SMIAPP_CSI_SIGNALLING_MODE_CSI2;
2997 break;
2998 /* FIXME: add CCP2 support. */
2999 default:
3000 rval = -EINVAL;
3001 goto out_err;
3002 }
3003
3004 pdata->lanes = bus_cfg.bus.mipi_csi2.num_data_lanes;
3005 dev_dbg(dev, "lanes %u\n", pdata->lanes);
3006
3007 /* xshutdown GPIO is optional */
3008 pdata->xshutdown = of_get_named_gpio(dev->of_node, "reset-gpios", 0);
3009
3010 /* NVM size is not mandatory */
3011 of_property_read_u32(dev->of_node, "nokia,nvm-size",
3012 &pdata->nvm_size);
3013
3014 rval = of_property_read_u32(dev->of_node, "clock-frequency",
3015 &pdata->ext_clk);
3016 if (rval) {
3017 dev_warn(dev, "can't get clock-frequency\n");
3018 goto out_err;
3019 }
3020
3021 dev_dbg(dev, "reset %d, nvm %d, clk %d, csi %d\n", pdata->xshutdown,
3022 pdata->nvm_size, pdata->ext_clk, pdata->csi_signalling_mode);
3023
3024 rval = of_get_property(
3025 dev->of_node, "link-frequencies", &asize) ? 0 : -ENOENT;
3026 if (rval) {
3027 dev_warn(dev, "can't get link-frequencies array size\n");
3028 goto out_err;
3029 }
3030
3031 pdata->op_sys_clock = devm_kzalloc(dev, asize, GFP_KERNEL);
3032 if (!pdata->op_sys_clock) {
3033 rval = -ENOMEM;
3034 goto out_err;
3035 }
3036
3037 asize /= sizeof(*pdata->op_sys_clock);
3038 /*
3039 * Read a 64-bit array --- this will be replaced with a
3040 * of_property_read_u64_array() once it's merged.
3041 */
3042 prop = of_find_property(dev->of_node, "link-frequencies", NULL);
3043 if (!prop)
3044 goto out_err;
3045 if (!prop->value)
3046 goto out_err;
3047 if (asize * sizeof(*pdata->op_sys_clock) > prop->length)
3048 goto out_err;
3049 val = prop->value;
3050 if (IS_ERR(val))
3051 goto out_err;
3052
3053 for (i = 0; i < asize; i++)
3054 pdata->op_sys_clock[i] = of_read_number(val + i * 2, 2);
3055
3056 for (; asize > 0; asize--)
3057 dev_dbg(dev, "freq %d: %lld\n", asize - 1,
3058 pdata->op_sys_clock[asize - 1]);
3059
3060 of_node_put(ep);
3061 return pdata;
3062
3063out_err:
3064 of_node_put(ep);
3065 return NULL;
3066}
3067
ccfc97bd
SA		 3068static int smiapp_probe(struct i2c_client *client,
3069 const struct i2c_device_id *devid)
3070{
3071 struct smiapp_sensor *sensor;
390a5fa5
SA		 3072 struct smiapp_platform_data *pdata = smiapp_get_pdata(&client->dev);
3073 int rval;
ccfc97bd 3074
390a5fa5 3075 if (pdata == NULL)
ccfc97bd
SA		 3076 return -ENODEV;
3077
31c1d17b 3078 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
ccfc97bd
SA		 3079 if (sensor == NULL)
3080 return -ENOMEM;
3081
390a5fa5 3082 sensor->platform_data = pdata;
ccfc97bd
SA		 3083 mutex_init(&sensor->mutex);
3084 mutex_init(&sensor->power_mutex);
3085 sensor->src = &sensor->ssds[sensor->ssds_used];
3086
3087 v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops);
3088 sensor->src->sd.internal_ops = &smiapp_internal_src_ops;
3089 sensor->src->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
3090 sensor->src->sensor = sensor;
3091
3092 sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE;
f73108eb 3093 rval = media_entity_init(&sensor->src->sd.entity, 2,
ccfc97bd 3094 sensor->src->pads, 0);
f73108eb
SA		 3095 if (rval < 0)
3096 return rval;
3097
4c944684
SA		 3098 if (client->dev.of_node) {
3099 rval = smiapp_init(sensor);
3100 if (rval)
3101 goto out_media_entity_cleanup;
3102 }
3103
f73108eb
SA		 3104 rval = v4l2_async_register_subdev(&sensor->src->sd);
3105 if (rval < 0)
3106 goto out_media_entity_cleanup;
3107
3108 return 0;
3109
3110out_media_entity_cleanup:
3111 media_entity_cleanup(&sensor->src->sd.entity);
3112
3113 return rval;
ccfc97bd
SA		 3114}
3115
bf306900 3116static int smiapp_remove(struct i2c_client *client)
ccfc97bd
SA		 3117{
3118 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
3119 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
3120 unsigned int i;
3121
f73108eb
SA		 3122 v4l2_async_unregister_subdev(subdev);
3123
ccfc97bd 3124 if (sensor->power_count) {
9945374e 3125 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 3126 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 3127 if (sensor->platform_data->set_xclk)
3128 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
3129 else
d0aae004 3130 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 3131 sensor->power_count = 0;
3132 }
3133
eba66b3e 3134 device_remove_file(&client->dev, &dev_attr_ident);
31c1d17b 3135 if (sensor->nvm)
ccfc97bd 3136 device_remove_file(&client->dev, &dev_attr_nvm);
ccfc97bd
SA		 3137
3138 for (i = 0; i < sensor->ssds_used; i++) {
ccfc97bd 3139 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2a3e7256 3140 media_entity_cleanup(&sensor->ssds[i].sd.entity);
ccfc97bd
SA		 3141 }
3142 smiapp_free_controls(sensor);
ccfc97bd
SA		 3143
3144 return 0;
3145}
3146
390a5fa5
SA		 3147static const struct of_device_id smiapp_of_table[] = {
3148 { .compatible = "nokia,smia" },
3149 { },
3150};
3151
ccfc97bd
SA		 3152static const struct i2c_device_id smiapp_id_table[] = {
3153 { SMIAPP_NAME, 0 },
3154 { },
3155};
3156MODULE_DEVICE_TABLE(i2c, smiapp_id_table);
3157
3158static const struct dev_pm_ops smiapp_pm_ops = {
3159 .suspend = smiapp_suspend,
3160 .resume = smiapp_resume,
3161};
3162
3163static struct i2c_driver smiapp_i2c_driver = {
3164 .driver = {
390a5fa5 3165 .of_match_table = smiapp_of_table,
ccfc97bd
SA		 3166 .name = SMIAPP_NAME,
3167 .pm = &smiapp_pm_ops,
3168 },
3169 .probe = smiapp_probe,
bf306900 3170 .remove = smiapp_remove,
ccfc97bd
SA		 3171 .id_table = smiapp_id_table,
3172};
3173
3174module_i2c_driver(smiapp_i2c_driver);
3175
8c5dff90 3176MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
ccfc97bd
SA		 3177MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
3178MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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