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[media] smiapp: Fix power count handling
[deliverable/linux.git] / drivers / media / i2c / smiapp / smiapp-core.c
CommitLineData
ccfc97bd 1/*
cb7a01ac 2 * drivers/media/i2c/smiapp/smiapp-core.c
ccfc97bd
SA		 3 *
4 * Generic driver for SMIA/SMIA++ compliant camera modules
5 *
6 * Copyright (C) 2010--2012 Nokia Corporation
8c5dff90 7 * Contact: Sakari Ailus <sakari.ailus@iki.fi>
ccfc97bd
SA		 8 *
9 * Based on smiapp driver by Vimarsh Zutshi
10 * Based on jt8ev1.c by Vimarsh Zutshi
11 * Based on smia-sensor.c by Tuukka Toivonen <tuukkat76@gmail.com>
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * version 2 as published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 * 02110-1301 USA
26 *
27 */
28
2547428d 29#include <linux/clk.h>
ccfc97bd
SA		 30#include <linux/delay.h>
31#include <linux/device.h>
32#include <linux/gpio.h>
33#include <linux/module.h>
ce7d16a1 34#include <linux/slab.h>
ccfc97bd
SA		 35#include <linux/regulator/consumer.h>
36#include <linux/v4l2-mediabus.h>
37#include <media/v4l2-device.h>
38
39#include "smiapp.h"
40
563df3d0
SA		 41#define SMIAPP_ALIGN_DIM(dim, flags) \
42 ((flags) & V4L2_SEL_FLAG_GE \
43 ? ALIGN((dim), 2) \
ccfc97bd
SA		 44 : (dim) & ~1)
45
46/*
47 * smiapp_module_idents - supported camera modules
48 */
49static const struct smiapp_module_ident smiapp_module_idents[] = {
50 SMIAPP_IDENT_L(0x01, 0x022b, -1, "vs6555"),
51 SMIAPP_IDENT_L(0x01, 0x022e, -1, "vw6558"),
52 SMIAPP_IDENT_L(0x07, 0x7698, -1, "ovm7698"),
53 SMIAPP_IDENT_L(0x0b, 0x4242, -1, "smiapp-003"),
54 SMIAPP_IDENT_L(0x0c, 0x208a, -1, "tcm8330md"),
55 SMIAPP_IDENT_LQ(0x0c, 0x2134, -1, "tcm8500md", &smiapp_tcm8500md_quirk),
56 SMIAPP_IDENT_L(0x0c, 0x213e, -1, "et8en2"),
57 SMIAPP_IDENT_L(0x0c, 0x2184, -1, "tcm8580md"),
58 SMIAPP_IDENT_LQ(0x0c, 0x560f, -1, "jt8ew9", &smiapp_jt8ew9_quirk),
59 SMIAPP_IDENT_LQ(0x10, 0x4141, -1, "jt8ev1", &smiapp_jt8ev1_quirk),
60 SMIAPP_IDENT_LQ(0x10, 0x4241, -1, "imx125es", &smiapp_imx125es_quirk),
61};
62
63/*
64 *
65 * Dynamic Capability Identification
66 *
67 */
68
69static int smiapp_read_frame_fmt(struct smiapp_sensor *sensor)
70{
71 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
72 u32 fmt_model_type, fmt_model_subtype, ncol_desc, nrow_desc;
73 unsigned int i;
74 int rval;
75 int line_count = 0;
76 int embedded_start = -1, embedded_end = -1;
77 int image_start = 0;
78
1e73eea7 79 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_TYPE,
ccfc97bd
SA		 80 &fmt_model_type);
81 if (rval)
82 return rval;
83
1e73eea7 84 rval = smiapp_read(sensor, SMIAPP_REG_U8_FRAME_FORMAT_MODEL_SUBTYPE,
ccfc97bd
SA		 85 &fmt_model_subtype);
86 if (rval)
87 return rval;
88
89 ncol_desc = (fmt_model_subtype
90 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_MASK)
91 >> SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NCOLS_SHIFT;
92 nrow_desc = fmt_model_subtype
93 & SMIAPP_FRAME_FORMAT_MODEL_SUBTYPE_NROWS_MASK;
94
95 dev_dbg(&client->dev, "format_model_type %s\n",
96 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE
97 ? "2 byte" :
98 fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE
99 ? "4 byte" : "is simply bad");
100
101 for (i = 0; i < ncol_desc + nrow_desc; i++) {
102 u32 desc;
103 u32 pixelcode;
104 u32 pixels;
105 char *which;
106 char *what;
107
108 if (fmt_model_type == SMIAPP_FRAME_FORMAT_MODEL_TYPE_2BYTE) {
109 rval = smiapp_read(
1e73eea7 110 sensor,
ccfc97bd
SA		 111 SMIAPP_REG_U16_FRAME_FORMAT_DESCRIPTOR_2(i),
112 &desc);
113 if (rval)
114 return rval;
115
116 pixelcode =
117 (desc
118 & SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_MASK)
119 >> SMIAPP_FRAME_FORMAT_DESC_2_PIXELCODE_SHIFT;
120 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_2_PIXELS_MASK;
121 } else if (fmt_model_type
122 == SMIAPP_FRAME_FORMAT_MODEL_TYPE_4BYTE) {
123 rval = smiapp_read(
1e73eea7 124 sensor,
ccfc97bd
SA		 125 SMIAPP_REG_U32_FRAME_FORMAT_DESCRIPTOR_4(i),
126 &desc);
127 if (rval)
128 return rval;
129
130 pixelcode =
131 (desc
132 & SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_MASK)
133 >> SMIAPP_FRAME_FORMAT_DESC_4_PIXELCODE_SHIFT;
134 pixels = desc & SMIAPP_FRAME_FORMAT_DESC_4_PIXELS_MASK;
135 } else {
136 dev_dbg(&client->dev,
137 "invalid frame format model type %d\n",
138 fmt_model_type);
139 return -EINVAL;
140 }
141
142 if (i < ncol_desc)
143 which = "columns";
144 else
145 which = "rows";
146
147 switch (pixelcode) {
148 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED:
149 what = "embedded";
150 break;
151 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DUMMY:
152 what = "dummy";
153 break;
154 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_BLACK:
155 what = "black";
156 break;
157 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_DARK:
158 what = "dark";
159 break;
160 case SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE:
161 what = "visible";
162 break;
163 default:
164 what = "invalid";
165 dev_dbg(&client->dev, "pixelcode %d\n", pixelcode);
166 break;
167 }
168
169 dev_dbg(&client->dev, "%s pixels: %d %s\n",
170 what, pixels, which);
171
172 if (i < ncol_desc)
173 continue;
174
175 /* Handle row descriptors */
176 if (pixelcode
177 == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_EMBEDDED) {
178 embedded_start = line_count;
179 } else {
180 if (pixelcode == SMIAPP_FRAME_FORMAT_DESC_PIXELCODE_VISIBLE
181 || pixels >= sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES] / 2)
182 image_start = line_count;
183 if (embedded_start != -1 && embedded_end == -1)
184 embedded_end = line_count;
185 }
186 line_count += pixels;
187 }
188
189 if (embedded_start == -1 || embedded_end == -1) {
190 embedded_start = 0;
191 embedded_end = 0;
192 }
193
194 dev_dbg(&client->dev, "embedded data from lines %d to %d\n",
195 embedded_start, embedded_end);
196 dev_dbg(&client->dev, "image data starts at line %d\n", image_start);
197
198 return 0;
199}
200
201static int smiapp_pll_configure(struct smiapp_sensor *sensor)
202{
ccfc97bd
SA		 203 struct smiapp_pll *pll = &sensor->pll;
204 int rval;
205
206 rval = smiapp_write(
1e73eea7 207 sensor, SMIAPP_REG_U16_VT_PIX_CLK_DIV, pll->vt_pix_clk_div);
ccfc97bd
SA		 208 if (rval < 0)
209 return rval;
210
211 rval = smiapp_write(
1e73eea7 212 sensor, SMIAPP_REG_U16_VT_SYS_CLK_DIV, pll->vt_sys_clk_div);
ccfc97bd
SA		 213 if (rval < 0)
214 return rval;
215
216 rval = smiapp_write(
1e73eea7 217 sensor, SMIAPP_REG_U16_PRE_PLL_CLK_DIV, pll->pre_pll_clk_div);
ccfc97bd
SA		 218 if (rval < 0)
219 return rval;
220
221 rval = smiapp_write(
1e73eea7 222 sensor, SMIAPP_REG_U16_PLL_MULTIPLIER, pll->pll_multiplier);
ccfc97bd
SA		 223 if (rval < 0)
224 return rval;
225
226 /* Lane op clock ratio does not apply here. */
227 rval = smiapp_write(
1e73eea7 228 sensor, SMIAPP_REG_U32_REQUESTED_LINK_BIT_RATE_MBPS,
ccfc97bd
SA		 229 DIV_ROUND_UP(pll->op_sys_clk_freq_hz, 1000000 / 256 / 256));
230 if (rval < 0 || sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
231 return rval;
232
233 rval = smiapp_write(
1e73eea7 234 sensor, SMIAPP_REG_U16_OP_PIX_CLK_DIV, pll->op_pix_clk_div);
ccfc97bd
SA		 235 if (rval < 0)
236 return rval;
237
238 return smiapp_write(
1e73eea7 239 sensor, SMIAPP_REG_U16_OP_SYS_CLK_DIV, pll->op_sys_clk_div);
ccfc97bd
SA		 240}
241
242static int smiapp_pll_update(struct smiapp_sensor *sensor)
243{
244 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
245 struct smiapp_pll_limits lim = {
246 .min_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_PRE_PLL_CLK_DIV],
247 .max_pre_pll_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_PRE_PLL_CLK_DIV],
248 .min_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_IP_FREQ_HZ],
249 .max_pll_ip_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_IP_FREQ_HZ],
250 .min_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MIN_PLL_MULTIPLIER],
251 .max_pll_multiplier = sensor->limits[SMIAPP_LIMIT_MAX_PLL_MULTIPLIER],
252 .min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
253 .max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],
254
6ec84a28
LP		 255 .op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
256 .op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
257 .op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
258 .op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
259 .op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
260 .op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
261 .op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
262 .op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],
263
264 .vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
265 .vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
266 .vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
267 .vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
268 .vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
269 .vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
270 .vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
271 .vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
ccfc97bd
SA		 272
273 .min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
274 .min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
275 };
276 struct smiapp_pll *pll = &sensor->pll;
277 int rval;
278
ccfc97bd
SA		 279 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0) {
280 /*
281 * Fill in operational clock divisors limits from the
282 * video timing ones. On profile 0 sensors the
283 * requirements regarding them are essentially the
284 * same as on VT ones.
285 */
6ec84a28 286 lim.op = lim.vt;
ccfc97bd
SA		 287 }
288
ccfc97bd
SA		 289 pll->binning_horizontal = sensor->binning_horizontal;
290 pll->binning_vertical = sensor->binning_vertical;
291 pll->link_freq =
292 sensor->link_freq->qmenu_int[sensor->link_freq->val];
293 pll->scale_m = sensor->scale_m;
ccfc97bd
SA		 294 pll->bits_per_pixel = sensor->csi_format->compressed;
295
296 rval = smiapp_pll_calculate(&client->dev, &lim, pll);
297 if (rval < 0)
298 return rval;
299
2a9ec373
HV		 300 *sensor->pixel_rate_parray->p_cur.p_s64 = pll->vt_pix_clk_freq_hz;
301 *sensor->pixel_rate_csi->p_cur.p_s64 = pll->pixel_rate_csi;
ccfc97bd
SA		 302
303 return 0;
304}
305
306
307/*
308 *
309 * V4L2 Controls handling
310 *
311 */
312
313static void __smiapp_update_exposure_limits(struct smiapp_sensor *sensor)
314{
315 struct v4l2_ctrl *ctrl = sensor->exposure;
316 int max;
317
318 max = sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
319 + sensor->vblank->val
320 - sensor->limits[SMIAPP_LIMIT_COARSE_INTEGRATION_TIME_MAX_MARGIN];
321
322 ctrl->maximum = max;
323 if (ctrl->default_value > max)
324 ctrl->default_value = max;
325 if (ctrl->val > max)
326 ctrl->val = max;
327 if (ctrl->cur.val > max)
328 ctrl->cur.val = max;
329}
330
331/*
332 * Order matters.
333 *
334 * 1. Bits-per-pixel, descending.
335 * 2. Bits-per-pixel compressed, descending.
336 * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel
337 * orders must be defined.
338 */
339static const struct smiapp_csi_data_format smiapp_csi_data_formats[] = {
340 { V4L2_MBUS_FMT_SGRBG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GRBG, },
341 { V4L2_MBUS_FMT_SRGGB12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_RGGB, },
342 { V4L2_MBUS_FMT_SBGGR12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_BGGR, },
343 { V4L2_MBUS_FMT_SGBRG12_1X12, 12, 12, SMIAPP_PIXEL_ORDER_GBRG, },
344 { V4L2_MBUS_FMT_SGRBG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GRBG, },
345 { V4L2_MBUS_FMT_SRGGB10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_RGGB, },
346 { V4L2_MBUS_FMT_SBGGR10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_BGGR, },
347 { V4L2_MBUS_FMT_SGBRG10_1X10, 10, 10, SMIAPP_PIXEL_ORDER_GBRG, },
348 { V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GRBG, },
349 { V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_RGGB, },
350 { V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_BGGR, },
351 { V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8, 10, 8, SMIAPP_PIXEL_ORDER_GBRG, },
b8cc8d7a
SA		 352 { V4L2_MBUS_FMT_SGRBG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GRBG, },
353 { V4L2_MBUS_FMT_SRGGB8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_RGGB, },
354 { V4L2_MBUS_FMT_SBGGR8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_BGGR, },
355 { V4L2_MBUS_FMT_SGBRG8_1X8, 8, 8, SMIAPP_PIXEL_ORDER_GBRG, },
ccfc97bd
SA		 356};
357
358const char *pixel_order_str[] = { "GRBG", "RGGB", "BGGR", "GBRG" };
359
360#define to_csi_format_idx(fmt) (((unsigned long)(fmt) \
361 - (unsigned long)smiapp_csi_data_formats) \
362 / sizeof(*smiapp_csi_data_formats))
363
364static u32 smiapp_pixel_order(struct smiapp_sensor *sensor)
365{
366 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
367 int flip = 0;
368
369 if (sensor->hflip) {
370 if (sensor->hflip->val)
371 flip |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
372
373 if (sensor->vflip->val)
374 flip |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
375 }
376
377 flip ^= sensor->hvflip_inv_mask;
378
379 dev_dbg(&client->dev, "flip %d\n", flip);
380 return sensor->default_pixel_order ^ flip;
381}
382
383static void smiapp_update_mbus_formats(struct smiapp_sensor *sensor)
384{
385 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
386 unsigned int csi_format_idx =
387 to_csi_format_idx(sensor->csi_format) & ~3;
388 unsigned int internal_csi_format_idx =
389 to_csi_format_idx(sensor->internal_csi_format) & ~3;
390 unsigned int pixel_order = smiapp_pixel_order(sensor);
391
392 sensor->mbus_frame_fmts =
393 sensor->default_mbus_frame_fmts << pixel_order;
394 sensor->csi_format =
395 &smiapp_csi_data_formats[csi_format_idx + pixel_order];
396 sensor->internal_csi_format =
397 &smiapp_csi_data_formats[internal_csi_format_idx
398 + pixel_order];
399
400 BUG_ON(max(internal_csi_format_idx, csi_format_idx) + pixel_order
401 >= ARRAY_SIZE(smiapp_csi_data_formats));
ccfc97bd
SA		 402
403 dev_dbg(&client->dev, "new pixel order %s\n",
404 pixel_order_str[pixel_order]);
405}
406
407static int smiapp_set_ctrl(struct v4l2_ctrl *ctrl)
408{
409 struct smiapp_sensor *sensor =
410 container_of(ctrl->handler, struct smiapp_subdev, ctrl_handler)
411 ->sensor;
ccfc97bd
SA		 412 u32 orient = 0;
413 int exposure;
414 int rval;
415
416 switch (ctrl->id) {
417 case V4L2_CID_ANALOGUE_GAIN:
418 return smiapp_write(
1e73eea7 419 sensor,
ccfc97bd
SA		 420 SMIAPP_REG_U16_ANALOGUE_GAIN_CODE_GLOBAL, ctrl->val);
421
422 case V4L2_CID_EXPOSURE:
423 return smiapp_write(
1e73eea7 424 sensor,
ccfc97bd
SA		 425 SMIAPP_REG_U16_COARSE_INTEGRATION_TIME, ctrl->val);
426
427 case V4L2_CID_HFLIP:
428 case V4L2_CID_VFLIP:
429 if (sensor->streaming)
430 return -EBUSY;
431
432 if (sensor->hflip->val)
433 orient |= SMIAPP_IMAGE_ORIENTATION_HFLIP;
434
435 if (sensor->vflip->val)
436 orient |= SMIAPP_IMAGE_ORIENTATION_VFLIP;
437
438 orient ^= sensor->hvflip_inv_mask;
1e73eea7 439 rval = smiapp_write(sensor,
ccfc97bd
SA		 440 SMIAPP_REG_U8_IMAGE_ORIENTATION,
441 orient);
442 if (rval < 0)
443 return rval;
444
445 smiapp_update_mbus_formats(sensor);
446
447 return 0;
448
449 case V4L2_CID_VBLANK:
450 exposure = sensor->exposure->val;
451
452 __smiapp_update_exposure_limits(sensor);
453
454 if (exposure > sensor->exposure->maximum) {
455 sensor->exposure->val =
456 sensor->exposure->maximum;
457 rval = smiapp_set_ctrl(
458 sensor->exposure);
459 if (rval < 0)
460 return rval;
461 }
462
463 return smiapp_write(
1e73eea7 464 sensor, SMIAPP_REG_U16_FRAME_LENGTH_LINES,
ccfc97bd
SA		 465 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
466 + ctrl->val);
467
468 case V4L2_CID_HBLANK:
469 return smiapp_write(
1e73eea7 470 sensor, SMIAPP_REG_U16_LINE_LENGTH_PCK,
ccfc97bd
SA		 471 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
472 + ctrl->val);
473
474 case V4L2_CID_LINK_FREQ:
475 if (sensor->streaming)
476 return -EBUSY;
477
478 return smiapp_pll_update(sensor);
479
480 default:
481 return -EINVAL;
482 }
483}
484
485static const struct v4l2_ctrl_ops smiapp_ctrl_ops = {
486 .s_ctrl = smiapp_set_ctrl,
487};
488
489static int smiapp_init_controls(struct smiapp_sensor *sensor)
490{
491 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
06b491fb 492 unsigned int max;
ccfc97bd
SA		 493 int rval;
494
495 rval = v4l2_ctrl_handler_init(&sensor->pixel_array->ctrl_handler, 7);
496 if (rval)
497 return rval;
498 sensor->pixel_array->ctrl_handler.lock = &sensor->mutex;
499
500 sensor->analog_gain = v4l2_ctrl_new_std(
501 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
502 V4L2_CID_ANALOGUE_GAIN,
503 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN],
504 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MAX],
505 max(sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_STEP], 1U),
506 sensor->limits[SMIAPP_LIMIT_ANALOGUE_GAIN_CODE_MIN]);
507
508 /* Exposure limits will be updated soon, use just something here. */
509 sensor->exposure = v4l2_ctrl_new_std(
510 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
511 V4L2_CID_EXPOSURE, 0, 0, 1, 0);
512
513 sensor->hflip = v4l2_ctrl_new_std(
514 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
515 V4L2_CID_HFLIP, 0, 1, 1, 0);
516 sensor->vflip = v4l2_ctrl_new_std(
517 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
518 V4L2_CID_VFLIP, 0, 1, 1, 0);
519
520 sensor->vblank = v4l2_ctrl_new_std(
521 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
522 V4L2_CID_VBLANK, 0, 1, 1, 0);
523
524 if (sensor->vblank)
525 sensor->vblank->flags |= V4L2_CTRL_FLAG_UPDATE;
526
527 sensor->hblank = v4l2_ctrl_new_std(
528 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
529 V4L2_CID_HBLANK, 0, 1, 1, 0);
530
531 if (sensor->hblank)
532 sensor->hblank->flags |= V4L2_CTRL_FLAG_UPDATE;
533
534 sensor->pixel_rate_parray = v4l2_ctrl_new_std(
535 &sensor->pixel_array->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 536 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd
SA		 537
538 if (sensor->pixel_array->ctrl_handler.error) {
539 dev_err(&client->dev,
540 "pixel array controls initialization failed (%d)\n",
541 sensor->pixel_array->ctrl_handler.error);
542 rval = sensor->pixel_array->ctrl_handler.error;
543 goto error;
544 }
545
546 sensor->pixel_array->sd.ctrl_handler =
547 &sensor->pixel_array->ctrl_handler;
548
549 v4l2_ctrl_cluster(2, &sensor->hflip);
550
551 rval = v4l2_ctrl_handler_init(&sensor->src->ctrl_handler, 0);
552 if (rval)
553 goto error;
554 sensor->src->ctrl_handler.lock = &sensor->mutex;
555
06b491fb 556 for (max = 0; sensor->platform_data->op_sys_clock[max + 1]; max++);
ccfc97bd 557
06b491fb
SA		 558 sensor->link_freq = v4l2_ctrl_new_int_menu(
559 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
560 V4L2_CID_LINK_FREQ, max, 0,
561 sensor->platform_data->op_sys_clock);
ccfc97bd
SA		 562
563 sensor->pixel_rate_csi = v4l2_ctrl_new_std(
564 &sensor->src->ctrl_handler, &smiapp_ctrl_ops,
0ba2aeb6 565 V4L2_CID_PIXEL_RATE, 1, INT_MAX, 1, 1);
ccfc97bd
SA		 566
567 if (sensor->src->ctrl_handler.error) {
568 dev_err(&client->dev,
569 "src controls initialization failed (%d)\n",
570 sensor->src->ctrl_handler.error);
571 rval = sensor->src->ctrl_handler.error;
572 goto error;
573 }
574
575 sensor->src->sd.ctrl_handler =
576 &sensor->src->ctrl_handler;
577
578 return 0;
579
580error:
581 v4l2_ctrl_handler_free(&sensor->pixel_array->ctrl_handler);
582 v4l2_ctrl_handler_free(&sensor->src->ctrl_handler);
583
584 return rval;
585}
586
587static void smiapp_free_controls(struct smiapp_sensor *sensor)
588{
589 unsigned int i;
590
591 for (i = 0; i < sensor->ssds_used; i++)
592 v4l2_ctrl_handler_free(&sensor->ssds[i].ctrl_handler);
593}
594
595static int smiapp_get_limits(struct smiapp_sensor *sensor, int const *limit,
596 unsigned int n)
597{
598 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
599 unsigned int i;
600 u32 val;
601 int rval;
602
603 for (i = 0; i < n; i++) {
604 rval = smiapp_read(
1e73eea7 605 sensor, smiapp_reg_limits[limit[i]].addr, &val);
ccfc97bd
SA		 606 if (rval)
607 return rval;
608 sensor->limits[limit[i]] = val;
393cbd8d 609 dev_dbg(&client->dev, "0x%8.8x \"%s\" = %u, 0x%x\n",
ccfc97bd
SA		 610 smiapp_reg_limits[limit[i]].addr,
611 smiapp_reg_limits[limit[i]].what, val, val);
612 }
613
614 return 0;
615}
616
617static int smiapp_get_all_limits(struct smiapp_sensor *sensor)
618{
619 unsigned int i;
620 int rval;
621
622 for (i = 0; i < SMIAPP_LIMIT_LAST; i++) {
623 rval = smiapp_get_limits(sensor, &i, 1);
624 if (rval < 0)
625 return rval;
626 }
627
628 if (sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] == 0)
629 smiapp_replace_limit(sensor, SMIAPP_LIMIT_SCALER_N_MIN, 16);
630
631 return 0;
632}
633
634static int smiapp_get_limits_binning(struct smiapp_sensor *sensor)
635{
3de886e0 636 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
ccfc97bd
SA		 637 static u32 const limits[] = {
638 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN,
639 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN,
640 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN,
641 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN,
642 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN,
643 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN_BIN,
644 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN_BIN,
645 };
646 static u32 const limits_replace[] = {
647 SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES,
648 SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES,
649 SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK,
650 SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK,
651 SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK,
652 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MIN,
653 SMIAPP_LIMIT_FINE_INTEGRATION_TIME_MAX_MARGIN,
654 };
3de886e0
SA		 655 unsigned int i;
656 int rval;
ccfc97bd
SA		 657
658 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY] ==
659 SMIAPP_BINNING_CAPABILITY_NO) {
ccfc97bd
SA		 660 for (i = 0; i < ARRAY_SIZE(limits); i++)
661 sensor->limits[limits[i]] =
662 sensor->limits[limits_replace[i]];
663
664 return 0;
665 }
666
3de886e0
SA		 667 rval = smiapp_get_limits(sensor, limits, ARRAY_SIZE(limits));
668 if (rval < 0)
669 return rval;
670
671 /*
672 * Sanity check whether the binning limits are valid. If not,
673 * use the non-binning ones.
674 */
675 if (sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN]
676 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN]
677 && sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN])
678 return 0;
679
680 for (i = 0; i < ARRAY_SIZE(limits); i++) {
681 dev_dbg(&client->dev,
682 "replace limit 0x%8.8x \"%s\" = %d, 0x%x\n",
683 smiapp_reg_limits[limits[i]].addr,
684 smiapp_reg_limits[limits[i]].what,
685 sensor->limits[limits_replace[i]],
686 sensor->limits[limits_replace[i]]);
687 sensor->limits[limits[i]] =
688 sensor->limits[limits_replace[i]];
689 }
690
691 return 0;
ccfc97bd
SA		 692}
693
694static int smiapp_get_mbus_formats(struct smiapp_sensor *sensor)
695{
696 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
697 unsigned int type, n;
698 unsigned int i, pixel_order;
699 int rval;
700
701 rval = smiapp_read(
1e73eea7 702 sensor, SMIAPP_REG_U8_DATA_FORMAT_MODEL_TYPE, &type);
ccfc97bd
SA		 703 if (rval)
704 return rval;
705
706 dev_dbg(&client->dev, "data_format_model_type %d\n", type);
707
1e73eea7 708 rval = smiapp_read(sensor, SMIAPP_REG_U8_PIXEL_ORDER,
ccfc97bd
SA		 709 &pixel_order);
710 if (rval)
711 return rval;
712
713 if (pixel_order >= ARRAY_SIZE(pixel_order_str)) {
714 dev_dbg(&client->dev, "bad pixel order %d\n", pixel_order);
715 return -EINVAL;
716 }
717
718 dev_dbg(&client->dev, "pixel order %d (%s)\n", pixel_order,
719 pixel_order_str[pixel_order]);
720
721 switch (type) {
722 case SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL:
723 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_NORMAL_N;
724 break;
725 case SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED:
726 n = SMIAPP_DATA_FORMAT_MODEL_TYPE_EXTENDED_N;
727 break;
728 default:
729 return -EINVAL;
730 }
731
732 sensor->default_pixel_order = pixel_order;
733 sensor->mbus_frame_fmts = 0;
734
735 for (i = 0; i < n; i++) {
736 unsigned int fmt, j;
737
738 rval = smiapp_read(
1e73eea7 739 sensor,
ccfc97bd
SA		 740 SMIAPP_REG_U16_DATA_FORMAT_DESCRIPTOR(i), &fmt);
741 if (rval)
742 return rval;
743
48cb4a5d
SA		 744 dev_dbg(&client->dev, "%u: bpp %u, compressed %u\n",
745 i, fmt >> 8, (u8)fmt);
ccfc97bd
SA		 746
747 for (j = 0; j < ARRAY_SIZE(smiapp_csi_data_formats); j++) {
748 const struct smiapp_csi_data_format *f =
749 &smiapp_csi_data_formats[j];
750
751 if (f->pixel_order != SMIAPP_PIXEL_ORDER_GRBG)
752 continue;
753
754 if (f->width != fmt >> 8 || f->compressed != (u8)fmt)
755 continue;
756
757 dev_dbg(&client->dev, "jolly good! %d\n", j);
758
759 sensor->default_mbus_frame_fmts |= 1 << j;
f67e1573
SA		 760 if (!sensor->csi_format
761 || f->width > sensor->csi_format->width
762 || (f->width == sensor->csi_format->width
763 && f->compressed
764 > sensor->csi_format->compressed)) {
ccfc97bd
SA		 765 sensor->csi_format = f;
766 sensor->internal_csi_format = f;
767 }
768 }
769 }
770
771 if (!sensor->csi_format) {
772 dev_err(&client->dev, "no supported mbus code found\n");
773 return -EINVAL;
774 }
775
776 smiapp_update_mbus_formats(sensor);
777
778 return 0;
779}
780
781static void smiapp_update_blanking(struct smiapp_sensor *sensor)
782{
783 struct v4l2_ctrl *vblank = sensor->vblank;
784 struct v4l2_ctrl *hblank = sensor->hblank;
785
786 vblank->minimum =
787 max_t(int,
788 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_BLANKING_LINES],
789 sensor->limits[SMIAPP_LIMIT_MIN_FRAME_LENGTH_LINES_BIN] -
790 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height);
791 vblank->maximum =
792 sensor->limits[SMIAPP_LIMIT_MAX_FRAME_LENGTH_LINES_BIN] -
793 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height;
794
795 vblank->val = clamp_t(int, vblank->val,
796 vblank->minimum, vblank->maximum);
797 vblank->default_value = vblank->minimum;
798 vblank->val = vblank->val;
799 vblank->cur.val = vblank->val;
800
801 hblank->minimum =
802 max_t(int,
803 sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN] -
804 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width,
805 sensor->limits[SMIAPP_LIMIT_MIN_LINE_BLANKING_PCK_BIN]);
806 hblank->maximum =
807 sensor->limits[SMIAPP_LIMIT_MAX_LINE_LENGTH_PCK_BIN] -
808 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width;
809
810 hblank->val = clamp_t(int, hblank->val,
811 hblank->minimum, hblank->maximum);
812 hblank->default_value = hblank->minimum;
813 hblank->val = hblank->val;
814 hblank->cur.val = hblank->val;
815
816 __smiapp_update_exposure_limits(sensor);
817}
818
819static int smiapp_update_mode(struct smiapp_sensor *sensor)
820{
821 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
822 unsigned int binning_mode;
823 int rval;
824
825 dev_dbg(&client->dev, "frame size: %dx%d\n",
826 sensor->src->crop[SMIAPP_PAD_SRC].width,
827 sensor->src->crop[SMIAPP_PAD_SRC].height);
828 dev_dbg(&client->dev, "csi format width: %d\n",
829 sensor->csi_format->width);
830
831 /* Binning has to be set up here; it affects limits */
832 if (sensor->binning_horizontal == 1 &&
833 sensor->binning_vertical == 1) {
834 binning_mode = 0;
835 } else {
836 u8 binning_type =
837 (sensor->binning_horizontal << 4)
838 | sensor->binning_vertical;
839
840 rval = smiapp_write(
1e73eea7 841 sensor, SMIAPP_REG_U8_BINNING_TYPE, binning_type);
ccfc97bd
SA		 842 if (rval < 0)
843 return rval;
844
845 binning_mode = 1;
846 }
1e73eea7 847 rval = smiapp_write(sensor, SMIAPP_REG_U8_BINNING_MODE, binning_mode);
ccfc97bd
SA		 848 if (rval < 0)
849 return rval;
850
851 /* Get updated limits due to binning */
852 rval = smiapp_get_limits_binning(sensor);
853 if (rval < 0)
854 return rval;
855
856 rval = smiapp_pll_update(sensor);
857 if (rval < 0)
858 return rval;
859
860 /* Output from pixel array, including blanking */
861 smiapp_update_blanking(sensor);
862
863 dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val);
864 dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val);
865
866 dev_dbg(&client->dev, "real timeperframe\t100/%d\n",
867 sensor->pll.vt_pix_clk_freq_hz /
868 ((sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width
869 + sensor->hblank->val) *
870 (sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height
871 + sensor->vblank->val) / 100));
872
873 return 0;
874}
875
876/*
877 *
878 * SMIA++ NVM handling
879 *
880 */
881static int smiapp_read_nvm(struct smiapp_sensor *sensor,
882 unsigned char *nvm)
883{
ccfc97bd 884 u32 i, s, p, np, v;
04582947 885 int rval = 0, rval2;
ccfc97bd
SA		 886
887 np = sensor->nvm_size / SMIAPP_NVM_PAGE_SIZE;
888 for (p = 0; p < np; p++) {
889 rval = smiapp_write(
1e73eea7 890 sensor,
ccfc97bd
SA		 891 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_PAGE_SELECT, p);
892 if (rval)
893 goto out;
894
1e73eea7 895 rval = smiapp_write(sensor,
ccfc97bd
SA		 896 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL,
897 SMIAPP_DATA_TRANSFER_IF_1_CTRL_EN |
898 SMIAPP_DATA_TRANSFER_IF_1_CTRL_RD_EN);
899 if (rval)
900 goto out;
901
902 for (i = 0; i < 1000; i++) {
903 rval = smiapp_read(
1e73eea7 904 sensor,
ccfc97bd
SA		 905 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_STATUS, &s);
906
907 if (rval)
908 goto out;
909
910 if (s & SMIAPP_DATA_TRANSFER_IF_1_STATUS_RD_READY)
911 break;
912
913 if (--i == 0) {
914 rval = -ETIMEDOUT;
915 goto out;
916 }
917
918 }
919
920 for (i = 0; i < SMIAPP_NVM_PAGE_SIZE; i++) {
921 rval = smiapp_read(
1e73eea7 922 sensor,
ccfc97bd
SA		 923 SMIAPP_REG_U8_DATA_TRANSFER_IF_1_DATA_0 + i,
924 &v);
925 if (rval)
926 goto out;
927
928 *nvm++ = v;
929 }
930 }
931
932out:
1e73eea7 933 rval2 = smiapp_write(sensor, SMIAPP_REG_U8_DATA_TRANSFER_IF_1_CTRL, 0);
ccfc97bd
SA		 934 if (rval < 0)
935 return rval;
936 else
937 return rval2;
938}
939
940/*
941 *
942 * SMIA++ CCI address control
943 *
944 */
945static int smiapp_change_cci_addr(struct smiapp_sensor *sensor)
946{
947 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
948 int rval;
949 u32 val;
950
951 client->addr = sensor->platform_data->i2c_addr_dfl;
952
1e73eea7 953 rval = smiapp_write(sensor,
ccfc97bd
SA		 954 SMIAPP_REG_U8_CCI_ADDRESS_CONTROL,
955 sensor->platform_data->i2c_addr_alt << 1);
956 if (rval)
957 return rval;
958
959 client->addr = sensor->platform_data->i2c_addr_alt;
960
961 /* verify addr change went ok */
1e73eea7 962 rval = smiapp_read(sensor, SMIAPP_REG_U8_CCI_ADDRESS_CONTROL, &val);
ccfc97bd
SA		 963 if (rval)
964 return rval;
965
966 if (val != sensor->platform_data->i2c_addr_alt << 1)
967 return -ENODEV;
968
969 return 0;
970}
971
972/*
973 *
974 * SMIA++ Mode Control
975 *
976 */
977static int smiapp_setup_flash_strobe(struct smiapp_sensor *sensor)
978{
ccfc97bd
SA		 979 struct smiapp_flash_strobe_parms *strobe_setup;
980 unsigned int ext_freq = sensor->platform_data->ext_clk;
981 u32 tmp;
982 u32 strobe_adjustment;
983 u32 strobe_width_high_rs;
984 int rval;
985
986 strobe_setup = sensor->platform_data->strobe_setup;
987
988 /*
989 * How to calculate registers related to strobe length. Please
990 * do not change, or if you do at least know what you're
991 * doing. :-)
992 *
8c5dff90 993 * Sakari Ailus <sakari.ailus@iki.fi> 2010-10-25
ccfc97bd
SA		 994 *
995 * flash_strobe_length [us] / 10^6 = (tFlash_strobe_width_ctrl
996 * / EXTCLK freq [Hz]) * flash_strobe_adjustment
997 *
998 * tFlash_strobe_width_ctrl E N, [1 - 0xffff]
999 * flash_strobe_adjustment E N, [1 - 0xff]
1000 *
1001 * The formula above is written as below to keep it on one
1002 * line:
1003 *
1004 * l / 10^6 = w / e * a
1005 *
1006 * Let's mark w * a by x:
1007 *
1008 * x = w * a
1009 *
1010 * Thus, we get:
1011 *
1012 * x = l * e / 10^6
1013 *
1014 * The strobe width must be at least as long as requested,
1015 * thus rounding upwards is needed.
1016 *
1017 * x = (l * e + 10^6 - 1) / 10^6
1018 * -----------------------------
1019 *
1020 * Maximum possible accuracy is wanted at all times. Thus keep
1021 * a as small as possible.
1022 *
1023 * Calculate a, assuming maximum w, with rounding upwards:
1024 *
1025 * a = (x + (2^16 - 1) - 1) / (2^16 - 1)
1026 * -------------------------------------
1027 *
1028 * Thus, we also get w, with that a, with rounding upwards:
1029 *
1030 * w = (x + a - 1) / a
1031 * -------------------
1032 *
1033 * To get limits:
1034 *
1035 * x E [1, (2^16 - 1) * (2^8 - 1)]
1036 *
1037 * Substituting maximum x to the original formula (with rounding),
1038 * the maximum l is thus
1039 *
1040 * (2^16 - 1) * (2^8 - 1) * 10^6 = l * e + 10^6 - 1
1041 *
1042 * l = (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / e
1043 * --------------------------------------------------
1044 *
1045 * flash_strobe_length must be clamped between 1 and
1046 * (10^6 * (2^16 - 1) * (2^8 - 1) - 10^6 + 1) / EXTCLK freq.
1047 *
1048 * Then,
1049 *
1050 * flash_strobe_adjustment = ((flash_strobe_length *
1051 * EXTCLK freq + 10^6 - 1) / 10^6 + (2^16 - 1) - 1) / (2^16 - 1)
1052 *
1053 * tFlash_strobe_width_ctrl = ((flash_strobe_length *
1054 * EXTCLK freq + 10^6 - 1) / 10^6 +
1055 * flash_strobe_adjustment - 1) / flash_strobe_adjustment
1056 */
1057 tmp = div_u64(1000000ULL * ((1 << 16) - 1) * ((1 << 8) - 1) -
1058 1000000 + 1, ext_freq);
1059 strobe_setup->strobe_width_high_us =
1060 clamp_t(u32, strobe_setup->strobe_width_high_us, 1, tmp);
1061
1062 tmp = div_u64(((u64)strobe_setup->strobe_width_high_us * (u64)ext_freq +
1063 1000000 - 1), 1000000ULL);
1064 strobe_adjustment = (tmp + (1 << 16) - 1 - 1) / ((1 << 16) - 1);
1065 strobe_width_high_rs = (tmp + strobe_adjustment - 1) /
1066 strobe_adjustment;
1067
1e73eea7 1068 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_MODE_RS,
ccfc97bd
SA		 1069 strobe_setup->mode);
1070 if (rval < 0)
1071 goto out;
1072
1e73eea7 1073 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_STROBE_ADJUSTMENT,
ccfc97bd
SA		 1074 strobe_adjustment);
1075 if (rval < 0)
1076 goto out;
1077
1078 rval = smiapp_write(
1e73eea7 1079 sensor, SMIAPP_REG_U16_TFLASH_STROBE_WIDTH_HIGH_RS_CTRL,
ccfc97bd
SA		 1080 strobe_width_high_rs);
1081 if (rval < 0)
1082 goto out;
1083
1e73eea7 1084 rval = smiapp_write(sensor, SMIAPP_REG_U16_TFLASH_STROBE_DELAY_RS_CTRL,
ccfc97bd
SA		 1085 strobe_setup->strobe_delay);
1086 if (rval < 0)
1087 goto out;
1088
1e73eea7 1089 rval = smiapp_write(sensor, SMIAPP_REG_U16_FLASH_STROBE_START_POINT,
ccfc97bd
SA		 1090 strobe_setup->stobe_start_point);
1091 if (rval < 0)
1092 goto out;
1093
1e73eea7 1094 rval = smiapp_write(sensor, SMIAPP_REG_U8_FLASH_TRIGGER_RS,
ccfc97bd
SA		 1095 strobe_setup->trigger);
1096
1097out:
1098 sensor->platform_data->strobe_setup->trigger = 0;
1099
1100 return rval;
1101}
1102
1103/* -----------------------------------------------------------------------------
1104 * Power management
1105 */
1106
1107static int smiapp_power_on(struct smiapp_sensor *sensor)
1108{
1109 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1110 unsigned int sleep;
1111 int rval;
1112
1113 rval = regulator_enable(sensor->vana);
1114 if (rval) {
1115 dev_err(&client->dev, "failed to enable vana regulator\n");
1116 return rval;
1117 }
1118 usleep_range(1000, 1000);
1119
2547428d
SA		 1120 if (sensor->platform_data->set_xclk)
1121 rval = sensor->platform_data->set_xclk(
1122 &sensor->src->sd, sensor->platform_data->ext_clk);
1123 else
d0aae004 1124 rval = clk_prepare_enable(sensor->ext_clk);
ccfc97bd 1125 if (rval < 0) {
d0aae004 1126 dev_dbg(&client->dev, "failed to enable xclk\n");
ccfc97bd
SA		 1127 goto out_xclk_fail;
1128 }
1129 usleep_range(1000, 1000);
1130
9945374e 1131 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd
SA		 1132 gpio_set_value(sensor->platform_data->xshutdown, 1);
1133
1134 sleep = SMIAPP_RESET_DELAY(sensor->platform_data->ext_clk);
1135 usleep_range(sleep, sleep);
1136
1137 /*
1138 * Failures to respond to the address change command have been noticed.
1139 * Those failures seem to be caused by the sensor requiring a longer
1140 * boot time than advertised. An additional 10ms delay seems to work
1141 * around the issue, but the SMIA++ I2C write retry hack makes the delay
1142 * unnecessary. The failures need to be investigated to find a proper
1143 * fix, and a delay will likely need to be added here if the I2C write
1144 * retry hack is reverted before the root cause of the boot time issue
1145 * is found.
1146 */
1147
1148 if (sensor->platform_data->i2c_addr_alt) {
1149 rval = smiapp_change_cci_addr(sensor);
1150 if (rval) {
1151 dev_err(&client->dev, "cci address change error\n");
1152 goto out_cci_addr_fail;
1153 }
1154 }
1155
1e73eea7 1156 rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
ccfc97bd
SA		 1157 SMIAPP_SOFTWARE_RESET);
1158 if (rval < 0) {
1159 dev_err(&client->dev, "software reset failed\n");
1160 goto out_cci_addr_fail;
1161 }
1162
1163 if (sensor->platform_data->i2c_addr_alt) {
1164 rval = smiapp_change_cci_addr(sensor);
1165 if (rval) {
1166 dev_err(&client->dev, "cci address change error\n");
1167 goto out_cci_addr_fail;
1168 }
1169 }
1170
1e73eea7 1171 rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
ccfc97bd
SA		 1172 SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
1173 if (rval) {
1174 dev_err(&client->dev, "compression mode set failed\n");
1175 goto out_cci_addr_fail;
1176 }
1177
1178 rval = smiapp_write(
1e73eea7 1179 sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
ccfc97bd
SA		 1180 sensor->platform_data->ext_clk / (1000000 / (1 << 8)));
1181 if (rval) {
1182 dev_err(&client->dev, "extclk frequency set failed\n");
1183 goto out_cci_addr_fail;
1184 }
1185
1e73eea7 1186 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
ccfc97bd
SA		 1187 sensor->platform_data->lanes - 1);
1188 if (rval) {
1189 dev_err(&client->dev, "csi lane mode set failed\n");
1190 goto out_cci_addr_fail;
1191 }
1192
1e73eea7 1193 rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
ccfc97bd
SA		 1194 SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
1195 if (rval) {
1196 dev_err(&client->dev, "fast standby set failed\n");
1197 goto out_cci_addr_fail;
1198 }
1199
1e73eea7 1200 rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
ccfc97bd
SA		 1201 sensor->platform_data->csi_signalling_mode);
1202 if (rval) {
1203 dev_err(&client->dev, "csi signalling mode set failed\n");
1204 goto out_cci_addr_fail;
1205 }
1206
1207 /* DPHY control done by sensor based on requested link rate */
1e73eea7 1208 rval = smiapp_write(sensor, SMIAPP_REG_U8_DPHY_CTRL,
ccfc97bd
SA		 1209 SMIAPP_DPHY_CTRL_UI);
1210 if (rval < 0)
1211 return rval;
1212
1213 rval = smiapp_call_quirk(sensor, post_poweron);
1214 if (rval) {
1215 dev_err(&client->dev, "post_poweron quirks failed\n");
1216 goto out_cci_addr_fail;
1217 }
1218
1219 /* Are we still initialising...? If yes, return here. */
1220 if (!sensor->pixel_array)
1221 return 0;
1222
1223 rval = v4l2_ctrl_handler_setup(
1224 &sensor->pixel_array->ctrl_handler);
1225 if (rval)
1226 goto out_cci_addr_fail;
1227
1228 rval = v4l2_ctrl_handler_setup(&sensor->src->ctrl_handler);
1229 if (rval)
1230 goto out_cci_addr_fail;
1231
1232 mutex_lock(&sensor->mutex);
1233 rval = smiapp_update_mode(sensor);
1234 mutex_unlock(&sensor->mutex);
1235 if (rval < 0)
1236 goto out_cci_addr_fail;
1237
1238 return 0;
1239
1240out_cci_addr_fail:
9945374e 1241 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1242 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1243 if (sensor->platform_data->set_xclk)
1244 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1245 else
d0aae004 1246 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1247
1248out_xclk_fail:
1249 regulator_disable(sensor->vana);
1250 return rval;
1251}
1252
1253static void smiapp_power_off(struct smiapp_sensor *sensor)
1254{
ccfc97bd
SA		 1255 /*
1256 * Currently power/clock to lens are enable/disabled separately
1257 * but they are essentially the same signals. So if the sensor is
1258 * powered off while the lens is powered on the sensor does not
1259 * really see a power off and next time the cci address change
1260 * will fail. So do a soft reset explicitly here.
1261 */
1262 if (sensor->platform_data->i2c_addr_alt)
1e73eea7 1263 smiapp_write(sensor,
ccfc97bd
SA		 1264 SMIAPP_REG_U8_SOFTWARE_RESET,
1265 SMIAPP_SOFTWARE_RESET);
1266
9945374e 1267 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 1268 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 1269 if (sensor->platform_data->set_xclk)
1270 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
1271 else
d0aae004 1272 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 1273 usleep_range(5000, 5000);
1274 regulator_disable(sensor->vana);
1275 sensor->streaming = 0;
1276}
1277
1278static int smiapp_set_power(struct v4l2_subdev *subdev, int on)
1279{
1280 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1281 int ret = 0;
1282
1283 mutex_lock(&sensor->power_mutex);
1284
58e43d90 1285 if (on && !sensor->power_count) {
ccfc97bd
SA		 1286 /* Power on and perform initialisation. */
1287 ret = smiapp_power_on(sensor);
1288 if (ret < 0)
1289 goto out;
58e43d90 1290 } else if (!on && sensor->power_count == 1) {
ccfc97bd
SA		 1291 smiapp_power_off(sensor);
1292 }
1293
1294 /* Update the power count. */
1295 sensor->power_count += on ? 1 : -1;
1296 WARN_ON(sensor->power_count < 0);
1297
1298out:
1299 mutex_unlock(&sensor->power_mutex);
1300 return ret;
1301}
1302
1303/* -----------------------------------------------------------------------------
1304 * Video stream management
1305 */
1306
1307static int smiapp_start_streaming(struct smiapp_sensor *sensor)
1308{
1309 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1310 int rval;
1311
1312 mutex_lock(&sensor->mutex);
1313
1e73eea7 1314 rval = smiapp_write(sensor, SMIAPP_REG_U16_CSI_DATA_FORMAT,
ccfc97bd
SA		 1315 (sensor->csi_format->width << 8) |
1316 sensor->csi_format->compressed);
1317 if (rval)
1318 goto out;
1319
1320 rval = smiapp_pll_configure(sensor);
1321 if (rval)
1322 goto out;
1323
1324 /* Analog crop start coordinates */
1e73eea7 1325 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_ADDR_START,
ccfc97bd
SA		 1326 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left);
1327 if (rval < 0)
1328 goto out;
1329
1e73eea7 1330 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_ADDR_START,
ccfc97bd
SA		 1331 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top);
1332 if (rval < 0)
1333 goto out;
1334
1335 /* Analog crop end coordinates */
1336 rval = smiapp_write(
1e73eea7 1337 sensor, SMIAPP_REG_U16_X_ADDR_END,
ccfc97bd
SA		 1338 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].left
1339 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].width - 1);
1340 if (rval < 0)
1341 goto out;
1342
1343 rval = smiapp_write(
1e73eea7 1344 sensor, SMIAPP_REG_U16_Y_ADDR_END,
ccfc97bd
SA		 1345 sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].top
1346 + sensor->pixel_array->crop[SMIAPP_PA_PAD_SRC].height - 1);
1347 if (rval < 0)
1348 goto out;
1349
1350 /*
1351 * Output from pixel array, including blanking, is set using
1352 * controls below. No need to set here.
1353 */
1354
1355 /* Digital crop */
1356 if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1357 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
1358 rval = smiapp_write(
1e73eea7 1359 sensor, SMIAPP_REG_U16_DIGITAL_CROP_X_OFFSET,
ccfc97bd
SA		 1360 sensor->scaler->crop[SMIAPP_PAD_SINK].left);
1361 if (rval < 0)
1362 goto out;
1363
1364 rval = smiapp_write(
1e73eea7 1365 sensor, SMIAPP_REG_U16_DIGITAL_CROP_Y_OFFSET,
ccfc97bd
SA		 1366 sensor->scaler->crop[SMIAPP_PAD_SINK].top);
1367 if (rval < 0)
1368 goto out;
1369
1370 rval = smiapp_write(
1e73eea7 1371 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_WIDTH,
ccfc97bd
SA		 1372 sensor->scaler->crop[SMIAPP_PAD_SINK].width);
1373 if (rval < 0)
1374 goto out;
1375
1376 rval = smiapp_write(
1e73eea7 1377 sensor, SMIAPP_REG_U16_DIGITAL_CROP_IMAGE_HEIGHT,
ccfc97bd
SA		 1378 sensor->scaler->crop[SMIAPP_PAD_SINK].height);
1379 if (rval < 0)
1380 goto out;
1381 }
1382
1383 /* Scaling */
1384 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1385 != SMIAPP_SCALING_CAPABILITY_NONE) {
1e73eea7 1386 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALING_MODE,
ccfc97bd
SA		 1387 sensor->scaling_mode);
1388 if (rval < 0)
1389 goto out;
1390
1e73eea7 1391 rval = smiapp_write(sensor, SMIAPP_REG_U16_SCALE_M,
ccfc97bd
SA		 1392 sensor->scale_m);
1393 if (rval < 0)
1394 goto out;
1395 }
1396
1397 /* Output size from sensor */
1e73eea7 1398 rval = smiapp_write(sensor, SMIAPP_REG_U16_X_OUTPUT_SIZE,
ccfc97bd
SA		 1399 sensor->src->crop[SMIAPP_PAD_SRC].width);
1400 if (rval < 0)
1401 goto out;
1e73eea7 1402 rval = smiapp_write(sensor, SMIAPP_REG_U16_Y_OUTPUT_SIZE,
ccfc97bd
SA		 1403 sensor->src->crop[SMIAPP_PAD_SRC].height);
1404 if (rval < 0)
1405 goto out;
1406
1407 if ((sensor->flash_capability &
1408 (SMIAPP_FLASH_MODE_CAPABILITY_SINGLE_STROBE |
1409 SMIAPP_FLASH_MODE_CAPABILITY_MULTIPLE_STROBE)) &&
1410 sensor->platform_data->strobe_setup != NULL &&
1411 sensor->platform_data->strobe_setup->trigger != 0) {
1412 rval = smiapp_setup_flash_strobe(sensor);
1413 if (rval)
1414 goto out;
1415 }
1416
1417 rval = smiapp_call_quirk(sensor, pre_streamon);
1418 if (rval) {
1419 dev_err(&client->dev, "pre_streamon quirks failed\n");
1420 goto out;
1421 }
1422
1e73eea7 1423 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1424 SMIAPP_MODE_SELECT_STREAMING);
1425
1426out:
1427 mutex_unlock(&sensor->mutex);
1428
1429 return rval;
1430}
1431
1432static int smiapp_stop_streaming(struct smiapp_sensor *sensor)
1433{
1434 struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
1435 int rval;
1436
1437 mutex_lock(&sensor->mutex);
1e73eea7 1438 rval = smiapp_write(sensor, SMIAPP_REG_U8_MODE_SELECT,
ccfc97bd
SA		 1439 SMIAPP_MODE_SELECT_SOFTWARE_STANDBY);
1440 if (rval)
1441 goto out;
1442
1443 rval = smiapp_call_quirk(sensor, post_streamoff);
1444 if (rval)
1445 dev_err(&client->dev, "post_streamoff quirks failed\n");
1446
1447out:
1448 mutex_unlock(&sensor->mutex);
1449 return rval;
1450}
1451
1452/* -----------------------------------------------------------------------------
1453 * V4L2 subdev video operations
1454 */
1455
1456static int smiapp_set_stream(struct v4l2_subdev *subdev, int enable)
1457{
1458 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1459 int rval;
1460
1461 if (sensor->streaming == enable)
1462 return 0;
1463
1464 if (enable) {
1465 sensor->streaming = 1;
1466 rval = smiapp_start_streaming(sensor);
1467 if (rval < 0)
1468 sensor->streaming = 0;
1469 } else {
1470 rval = smiapp_stop_streaming(sensor);
1471 sensor->streaming = 0;
1472 }
1473
1474 return rval;
1475}
1476
1477static int smiapp_enum_mbus_code(struct v4l2_subdev *subdev,
1478 struct v4l2_subdev_fh *fh,
1479 struct v4l2_subdev_mbus_code_enum *code)
1480{
1481 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1482 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1483 unsigned int i;
1484 int idx = -1;
1485 int rval = -EINVAL;
1486
1487 mutex_lock(&sensor->mutex);
1488
1489 dev_err(&client->dev, "subdev %s, pad %d, index %d\n",
1490 subdev->name, code->pad, code->index);
1491
1492 if (subdev != &sensor->src->sd || code->pad != SMIAPP_PAD_SRC) {
1493 if (code->index)
1494 goto out;
1495
1496 code->code = sensor->internal_csi_format->code;
1497 rval = 0;
1498 goto out;
1499 }
1500
1501 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1502 if (sensor->mbus_frame_fmts & (1 << i))
1503 idx++;
1504
1505 if (idx == code->index) {
1506 code->code = smiapp_csi_data_formats[i].code;
1507 dev_err(&client->dev, "found index %d, i %d, code %x\n",
1508 code->index, i, code->code);
1509 rval = 0;
1510 break;
1511 }
1512 }
1513
1514out:
1515 mutex_unlock(&sensor->mutex);
1516
1517 return rval;
1518}
1519
1520static u32 __smiapp_get_mbus_code(struct v4l2_subdev *subdev,
1521 unsigned int pad)
1522{
1523 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1524
1525 if (subdev == &sensor->src->sd && pad == SMIAPP_PAD_SRC)
1526 return sensor->csi_format->code;
1527 else
1528 return sensor->internal_csi_format->code;
1529}
1530
1531static int __smiapp_get_format(struct v4l2_subdev *subdev,
1532 struct v4l2_subdev_fh *fh,
1533 struct v4l2_subdev_format *fmt)
1534{
1535 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1536
1537 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1538 fmt->format = *v4l2_subdev_get_try_format(fh, fmt->pad);
1539 } else {
1540 struct v4l2_rect *r;
1541
1542 if (fmt->pad == ssd->source_pad)
1543 r = &ssd->crop[ssd->source_pad];
1544 else
1545 r = &ssd->sink_fmt;
1546
1547 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1548 fmt->format.width = r->width;
1549 fmt->format.height = r->height;
7ed0b291 1550 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1551 }
1552
1553 return 0;
1554}
1555
1556static int smiapp_get_format(struct v4l2_subdev *subdev,
1557 struct v4l2_subdev_fh *fh,
1558 struct v4l2_subdev_format *fmt)
1559{
1560 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1561 int rval;
1562
1563 mutex_lock(&sensor->mutex);
1564 rval = __smiapp_get_format(subdev, fh, fmt);
1565 mutex_unlock(&sensor->mutex);
1566
1567 return rval;
1568}
1569
1570static void smiapp_get_crop_compose(struct v4l2_subdev *subdev,
1571 struct v4l2_subdev_fh *fh,
1572 struct v4l2_rect **crops,
1573 struct v4l2_rect **comps, int which)
1574{
1575 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1576 unsigned int i;
1577
1578 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1579 if (crops)
1580 for (i = 0; i < subdev->entity.num_pads; i++)
1581 crops[i] = &ssd->crop[i];
1582 if (comps)
1583 *comps = &ssd->compose;
1584 } else {
1585 if (crops) {
1586 for (i = 0; i < subdev->entity.num_pads; i++) {
1587 crops[i] = v4l2_subdev_get_try_crop(fh, i);
1588 BUG_ON(!crops[i]);
1589 }
1590 }
1591 if (comps) {
1592 *comps = v4l2_subdev_get_try_compose(fh,
1593 SMIAPP_PAD_SINK);
1594 BUG_ON(!*comps);
1595 }
1596 }
1597}
1598
1599/* Changes require propagation only on sink pad. */
1600static void smiapp_propagate(struct v4l2_subdev *subdev,
1601 struct v4l2_subdev_fh *fh, int which,
1602 int target)
1603{
1604 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1605 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1606 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1607
1608 smiapp_get_crop_compose(subdev, fh, crops, &comp, which);
1609
1610 switch (target) {
5689b288 1611 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 1612 comp->width = crops[SMIAPP_PAD_SINK]->width;
1613 comp->height = crops[SMIAPP_PAD_SINK]->height;
1614 if (which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1615 if (ssd == sensor->scaler) {
1616 sensor->scale_m =
1617 sensor->limits[
1618 SMIAPP_LIMIT_SCALER_N_MIN];
1619 sensor->scaling_mode =
1620 SMIAPP_SCALING_MODE_NONE;
1621 } else if (ssd == sensor->binner) {
1622 sensor->binning_horizontal = 1;
1623 sensor->binning_vertical = 1;
1624 }
1625 }
1626 /* Fall through */
5689b288 1627 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 1628 *crops[SMIAPP_PAD_SRC] = *comp;
1629 break;
1630 default:
1631 BUG();
1632 }
1633}
1634
1635static const struct smiapp_csi_data_format
1636*smiapp_validate_csi_data_format(struct smiapp_sensor *sensor, u32 code)
1637{
1638 const struct smiapp_csi_data_format *csi_format = sensor->csi_format;
1639 unsigned int i;
1640
1641 for (i = 0; i < ARRAY_SIZE(smiapp_csi_data_formats); i++) {
1642 if (sensor->mbus_frame_fmts & (1 << i)
1643 && smiapp_csi_data_formats[i].code == code)
1644 return &smiapp_csi_data_formats[i];
1645 }
1646
1647 return csi_format;
1648}
1649
1650static int smiapp_set_format(struct v4l2_subdev *subdev,
1651 struct v4l2_subdev_fh *fh,
1652 struct v4l2_subdev_format *fmt)
1653{
1654 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1655 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1656 struct v4l2_rect *crops[SMIAPP_PADS];
1657
1658 mutex_lock(&sensor->mutex);
1659
1660 /*
1661 * Media bus code is changeable on src subdev's source pad. On
1662 * other source pads we just get format here.
1663 */
1664 if (fmt->pad == ssd->source_pad) {
1665 u32 code = fmt->format.code;
1666 int rval = __smiapp_get_format(subdev, fh, fmt);
1667
1668 if (!rval && subdev == &sensor->src->sd) {
1669 const struct smiapp_csi_data_format *csi_format =
1670 smiapp_validate_csi_data_format(sensor, code);
1671 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1672 sensor->csi_format = csi_format;
1673 fmt->format.code = csi_format->code;
1674 }
1675
1676 mutex_unlock(&sensor->mutex);
1677 return rval;
1678 }
1679
1680 /* Sink pad. Width and height are changeable here. */
1681 fmt->format.code = __smiapp_get_mbus_code(subdev, fmt->pad);
1682 fmt->format.width &= ~1;
1683 fmt->format.height &= ~1;
7ed0b291 1684 fmt->format.field = V4L2_FIELD_NONE;
ccfc97bd
SA		 1685
1686 fmt->format.width =
1687 clamp(fmt->format.width,
1688 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
1689 sensor->limits[SMIAPP_LIMIT_MAX_X_OUTPUT_SIZE]);
1690 fmt->format.height =
1691 clamp(fmt->format.height,
1692 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
1693 sensor->limits[SMIAPP_LIMIT_MAX_Y_OUTPUT_SIZE]);
1694
1695 smiapp_get_crop_compose(subdev, fh, crops, NULL, fmt->which);
1696
1697 crops[ssd->sink_pad]->left = 0;
1698 crops[ssd->sink_pad]->top = 0;
1699 crops[ssd->sink_pad]->width = fmt->format.width;
1700 crops[ssd->sink_pad]->height = fmt->format.height;
1701 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1702 ssd->sink_fmt = *crops[ssd->sink_pad];
1703 smiapp_propagate(subdev, fh, fmt->which,
5689b288 1704 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 1705
1706 mutex_unlock(&sensor->mutex);
1707
1708 return 0;
1709}
1710
1711/*
1712 * Calculate goodness of scaled image size compared to expected image
1713 * size and flags provided.
1714 */
1715#define SCALING_GOODNESS 100000
1716#define SCALING_GOODNESS_EXTREME 100000000
1717static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w,
1718 int h, int ask_h, u32 flags)
1719{
1720 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1721 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1722 int val = 0;
1723
1724 w &= ~1;
1725 ask_w &= ~1;
1726 h &= ~1;
1727 ask_h &= ~1;
1728
563df3d0 1729 if (flags & V4L2_SEL_FLAG_GE) {
ccfc97bd
SA		 1730 if (w < ask_w)
1731 val -= SCALING_GOODNESS;
1732 if (h < ask_h)
1733 val -= SCALING_GOODNESS;
1734 }
1735
563df3d0 1736 if (flags & V4L2_SEL_FLAG_LE) {
ccfc97bd
SA		 1737 if (w > ask_w)
1738 val -= SCALING_GOODNESS;
1739 if (h > ask_h)
1740 val -= SCALING_GOODNESS;
1741 }
1742
1743 val -= abs(w - ask_w);
1744 val -= abs(h - ask_h);
1745
1746 if (w < sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE])
1747 val -= SCALING_GOODNESS_EXTREME;
1748
1749 dev_dbg(&client->dev, "w %d ask_w %d h %d ask_h %d goodness %d\n",
1750 w, ask_h, h, ask_h, val);
1751
1752 return val;
1753}
1754
1755static void smiapp_set_compose_binner(struct v4l2_subdev *subdev,
1756 struct v4l2_subdev_fh *fh,
1757 struct v4l2_subdev_selection *sel,
1758 struct v4l2_rect **crops,
1759 struct v4l2_rect *comp)
1760{
1761 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1762 unsigned int i;
1763 unsigned int binh = 1, binv = 1;
aca6bf54 1764 int best = scaling_goodness(
ccfc97bd
SA		 1765 subdev,
1766 crops[SMIAPP_PAD_SINK]->width, sel->r.width,
1767 crops[SMIAPP_PAD_SINK]->height, sel->r.height, sel->flags);
1768
1769 for (i = 0; i < sensor->nbinning_subtypes; i++) {
1770 int this = scaling_goodness(
1771 subdev,
1772 crops[SMIAPP_PAD_SINK]->width
1773 / sensor->binning_subtypes[i].horizontal,
1774 sel->r.width,
1775 crops[SMIAPP_PAD_SINK]->height
1776 / sensor->binning_subtypes[i].vertical,
1777 sel->r.height, sel->flags);
1778
1779 if (this > best) {
1780 binh = sensor->binning_subtypes[i].horizontal;
1781 binv = sensor->binning_subtypes[i].vertical;
1782 best = this;
1783 }
1784 }
1785 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1786 sensor->binning_vertical = binv;
1787 sensor->binning_horizontal = binh;
1788 }
1789
1790 sel->r.width = (crops[SMIAPP_PAD_SINK]->width / binh) & ~1;
1791 sel->r.height = (crops[SMIAPP_PAD_SINK]->height / binv) & ~1;
1792}
1793
1794/*
1795 * Calculate best scaling ratio and mode for given output resolution.
1796 *
1797 * Try all of these: horizontal ratio, vertical ratio and smallest
1798 * size possible (horizontally).
1799 *
1800 * Also try whether horizontal scaler or full scaler gives a better
1801 * result.
1802 */
1803static void smiapp_set_compose_scaler(struct v4l2_subdev *subdev,
1804 struct v4l2_subdev_fh *fh,
1805 struct v4l2_subdev_selection *sel,
1806 struct v4l2_rect **crops,
1807 struct v4l2_rect *comp)
1808{
1809 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1810 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1811 u32 min, max, a, b, max_m;
1812 u32 scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
1813 int mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1814 u32 try[4];
1815 u32 ntry = 0;
1816 unsigned int i;
1817 int best = INT_MIN;
1818
1819 sel->r.width = min_t(unsigned int, sel->r.width,
1820 crops[SMIAPP_PAD_SINK]->width);
1821 sel->r.height = min_t(unsigned int, sel->r.height,
1822 crops[SMIAPP_PAD_SINK]->height);
1823
1824 a = crops[SMIAPP_PAD_SINK]->width
1825 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.width;
1826 b = crops[SMIAPP_PAD_SINK]->height
1827 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN] / sel->r.height;
1828 max_m = crops[SMIAPP_PAD_SINK]->width
1829 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]
1830 / sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE];
1831
7be5c289
AS		 1832 a = clamp(a, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1833 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1834 b = clamp(b, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1835 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
1836 max_m = clamp(max_m, sensor->limits[SMIAPP_LIMIT_SCALER_M_MIN],
1837 sensor->limits[SMIAPP_LIMIT_SCALER_M_MAX]);
ccfc97bd
SA		 1838
1839 dev_dbg(&client->dev, "scaling: a %d b %d max_m %d\n", a, b, max_m);
1840
1841 min = min(max_m, min(a, b));
1842 max = min(max_m, max(a, b));
1843
1844 try[ntry] = min;
1845 ntry++;
1846 if (min != max) {
1847 try[ntry] = max;
1848 ntry++;
1849 }
1850 if (max != max_m) {
1851 try[ntry] = min + 1;
1852 ntry++;
1853 if (min != max) {
1854 try[ntry] = max + 1;
1855 ntry++;
1856 }
1857 }
1858
1859 for (i = 0; i < ntry; i++) {
1860 int this = scaling_goodness(
1861 subdev,
1862 crops[SMIAPP_PAD_SINK]->width
1863 / try[i]
1864 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1865 sel->r.width,
1866 crops[SMIAPP_PAD_SINK]->height,
1867 sel->r.height,
1868 sel->flags);
1869
1870 dev_dbg(&client->dev, "trying factor %d (%d)\n", try[i], i);
1871
1872 if (this > best) {
1873 scale_m = try[i];
1874 mode = SMIAPP_SCALING_MODE_HORIZONTAL;
1875 best = this;
1876 }
1877
1878 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1879 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
1880 continue;
1881
1882 this = scaling_goodness(
1883 subdev, crops[SMIAPP_PAD_SINK]->width
1884 / try[i]
1885 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1886 sel->r.width,
1887 crops[SMIAPP_PAD_SINK]->height
1888 / try[i]
1889 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN],
1890 sel->r.height,
1891 sel->flags);
1892
1893 if (this > best) {
1894 scale_m = try[i];
1895 mode = SMIAPP_SCALING_MODE_BOTH;
1896 best = this;
1897 }
1898 }
1899
1900 sel->r.width =
1901 (crops[SMIAPP_PAD_SINK]->width
1902 / scale_m
1903 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN]) & ~1;
1904 if (mode == SMIAPP_SCALING_MODE_BOTH)
1905 sel->r.height =
1906 (crops[SMIAPP_PAD_SINK]->height
1907 / scale_m
1908 * sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN])
1909 & ~1;
1910 else
1911 sel->r.height = crops[SMIAPP_PAD_SINK]->height;
1912
1913 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1914 sensor->scale_m = scale_m;
1915 sensor->scaling_mode = mode;
1916 }
1917}
1918/* We're only called on source pads. This function sets scaling. */
1919static int smiapp_set_compose(struct v4l2_subdev *subdev,
1920 struct v4l2_subdev_fh *fh,
1921 struct v4l2_subdev_selection *sel)
1922{
1923 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1924 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1925 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
1926
1927 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
1928
1929 sel->r.top = 0;
1930 sel->r.left = 0;
1931
1932 if (ssd == sensor->binner)
1933 smiapp_set_compose_binner(subdev, fh, sel, crops, comp);
1934 else
1935 smiapp_set_compose_scaler(subdev, fh, sel, crops, comp);
1936
1937 *comp = sel->r;
1938 smiapp_propagate(subdev, fh, sel->which,
5689b288 1939 V4L2_SEL_TGT_COMPOSE);
ccfc97bd
SA		 1940
1941 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE)
1942 return smiapp_update_mode(sensor);
1943
1944 return 0;
1945}
1946
1947static int __smiapp_sel_supported(struct v4l2_subdev *subdev,
1948 struct v4l2_subdev_selection *sel)
1949{
1950 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1951 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1952
1953 /* We only implement crop in three places. */
1954 switch (sel->target) {
5689b288
SA		 1955 case V4L2_SEL_TGT_CROP:
1956 case V4L2_SEL_TGT_CROP_BOUNDS:
ccfc97bd
SA		 1957 if (ssd == sensor->pixel_array
1958 && sel->pad == SMIAPP_PA_PAD_SRC)
1959 return 0;
1960 if (ssd == sensor->src
1961 && sel->pad == SMIAPP_PAD_SRC)
1962 return 0;
1963 if (ssd == sensor->scaler
1964 && sel->pad == SMIAPP_PAD_SINK
1965 && sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
1966 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP)
1967 return 0;
1968 return -EINVAL;
5689b288
SA		 1969 case V4L2_SEL_TGT_COMPOSE:
1970 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 1971 if (sel->pad == ssd->source_pad)
1972 return -EINVAL;
1973 if (ssd == sensor->binner)
1974 return 0;
1975 if (ssd == sensor->scaler
1976 && sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
1977 != SMIAPP_SCALING_CAPABILITY_NONE)
1978 return 0;
1979 /* Fall through */
1980 default:
1981 return -EINVAL;
1982 }
1983}
1984
1985static int smiapp_set_crop(struct v4l2_subdev *subdev,
1986 struct v4l2_subdev_fh *fh,
1987 struct v4l2_subdev_selection *sel)
1988{
1989 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
1990 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
1991 struct v4l2_rect *src_size, *crops[SMIAPP_PADS];
1992 struct v4l2_rect _r;
1993
1994 smiapp_get_crop_compose(subdev, fh, crops, NULL, sel->which);
1995
1996 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1997 if (sel->pad == ssd->sink_pad)
1998 src_size = &ssd->sink_fmt;
1999 else
2000 src_size = &ssd->compose;
2001 } else {
2002 if (sel->pad == ssd->sink_pad) {
2003 _r.left = 0;
2004 _r.top = 0;
2005 _r.width = v4l2_subdev_get_try_format(fh, sel->pad)
2006 ->width;
2007 _r.height = v4l2_subdev_get_try_format(fh, sel->pad)
2008 ->height;
2009 src_size = &_r;
2010 } else {
2011 src_size =
2012 v4l2_subdev_get_try_compose(
2013 fh, ssd->sink_pad);
2014 }
2015 }
2016
2017 if (ssd == sensor->src && sel->pad == SMIAPP_PAD_SRC) {
2018 sel->r.left = 0;
2019 sel->r.top = 0;
2020 }
2021
2022 sel->r.width = min(sel->r.width, src_size->width);
2023 sel->r.height = min(sel->r.height, src_size->height);
2024
f90580ca
RR		 2025 sel->r.left = min_t(int, sel->r.left, src_size->width - sel->r.width);
2026 sel->r.top = min_t(int, sel->r.top, src_size->height - sel->r.height);
ccfc97bd
SA		 2027
2028 *crops[sel->pad] = sel->r;
2029
2030 if (ssd != sensor->pixel_array && sel->pad == SMIAPP_PAD_SINK)
2031 smiapp_propagate(subdev, fh, sel->which,
5689b288 2032 V4L2_SEL_TGT_CROP);
ccfc97bd
SA		 2033
2034 return 0;
2035}
2036
2037static int __smiapp_get_selection(struct v4l2_subdev *subdev,
2038 struct v4l2_subdev_fh *fh,
2039 struct v4l2_subdev_selection *sel)
2040{
2041 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2042 struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
2043 struct v4l2_rect *comp, *crops[SMIAPP_PADS];
2044 struct v4l2_rect sink_fmt;
2045 int ret;
2046
2047 ret = __smiapp_sel_supported(subdev, sel);
2048 if (ret)
2049 return ret;
2050
2051 smiapp_get_crop_compose(subdev, fh, crops, &comp, sel->which);
2052
2053 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
2054 sink_fmt = ssd->sink_fmt;
2055 } else {
2056 struct v4l2_mbus_framefmt *fmt =
2057 v4l2_subdev_get_try_format(fh, ssd->sink_pad);
2058
2059 sink_fmt.left = 0;
2060 sink_fmt.top = 0;
2061 sink_fmt.width = fmt->width;
2062 sink_fmt.height = fmt->height;
2063 }
2064
2065 switch (sel->target) {
5689b288 2066 case V4L2_SEL_TGT_CROP_BOUNDS:
ccfc97bd
SA		 2067 if (ssd == sensor->pixel_array) {
2068 sel->r.width =
2069 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2070 sel->r.height =
2071 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2072 } else if (sel->pad == ssd->sink_pad) {
2073 sel->r = sink_fmt;
2074 } else {
2075 sel->r = *comp;
2076 }
2077 break;
5689b288
SA		 2078 case V4L2_SEL_TGT_CROP:
2079 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
ccfc97bd
SA		 2080 sel->r = *crops[sel->pad];
2081 break;
5689b288 2082 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2083 sel->r = *comp;
2084 break;
2085 }
2086
2087 return 0;
2088}
2089
2090static int smiapp_get_selection(struct v4l2_subdev *subdev,
2091 struct v4l2_subdev_fh *fh,
2092 struct v4l2_subdev_selection *sel)
2093{
2094 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2095 int rval;
2096
2097 mutex_lock(&sensor->mutex);
2098 rval = __smiapp_get_selection(subdev, fh, sel);
2099 mutex_unlock(&sensor->mutex);
2100
2101 return rval;
2102}
2103static int smiapp_set_selection(struct v4l2_subdev *subdev,
2104 struct v4l2_subdev_fh *fh,
2105 struct v4l2_subdev_selection *sel)
2106{
2107 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2108 int ret;
2109
2110 ret = __smiapp_sel_supported(subdev, sel);
2111 if (ret)
2112 return ret;
2113
2114 mutex_lock(&sensor->mutex);
2115
2116 sel->r.left = max(0, sel->r.left & ~1);
2117 sel->r.top = max(0, sel->r.top & ~1);
f90580ca
RR		 2118 sel->r.width = SMIAPP_ALIGN_DIM(sel->r.width, sel->flags);
2119 sel->r.height = SMIAPP_ALIGN_DIM(sel->r.height, sel->flags);
ccfc97bd
SA		 2120
2121 sel->r.width = max_t(unsigned int,
2122 sensor->limits[SMIAPP_LIMIT_MIN_X_OUTPUT_SIZE],
2123 sel->r.width);
2124 sel->r.height = max_t(unsigned int,
2125 sensor->limits[SMIAPP_LIMIT_MIN_Y_OUTPUT_SIZE],
2126 sel->r.height);
2127
2128 switch (sel->target) {
5689b288 2129 case V4L2_SEL_TGT_CROP:
ccfc97bd
SA		 2130 ret = smiapp_set_crop(subdev, fh, sel);
2131 break;
5689b288 2132 case V4L2_SEL_TGT_COMPOSE:
ccfc97bd
SA		 2133 ret = smiapp_set_compose(subdev, fh, sel);
2134 break;
2135 default:
2136 BUG();
2137 }
2138
2139 mutex_unlock(&sensor->mutex);
2140 return ret;
2141}
2142
2143static int smiapp_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames)
2144{
2145 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2146
2147 *frames = sensor->frame_skip;
2148 return 0;
2149}
2150
2151/* -----------------------------------------------------------------------------
2152 * sysfs attributes
2153 */
2154
2155static ssize_t
2156smiapp_sysfs_nvm_read(struct device *dev, struct device_attribute *attr,
2157 char *buf)
2158{
2159 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2160 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2161 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2162 unsigned int nbytes;
2163
2164 if (!sensor->dev_init_done)
2165 return -EBUSY;
2166
2167 if (!sensor->nvm_size) {
2168 /* NVM not read yet - read it now */
2169 sensor->nvm_size = sensor->platform_data->nvm_size;
2170 if (smiapp_set_power(subdev, 1) < 0)
2171 return -ENODEV;
2172 if (smiapp_read_nvm(sensor, sensor->nvm)) {
2173 dev_err(&client->dev, "nvm read failed\n");
2174 return -ENODEV;
2175 }
2176 smiapp_set_power(subdev, 0);
2177 }
2178 /*
2179 * NVM is still way below a PAGE_SIZE, so we can safely
2180 * assume this for now.
2181 */
2182 nbytes = min_t(unsigned int, sensor->nvm_size, PAGE_SIZE);
2183 memcpy(buf, sensor->nvm, nbytes);
2184
2185 return nbytes;
2186}
2187static DEVICE_ATTR(nvm, S_IRUGO, smiapp_sysfs_nvm_read, NULL);
2188
eba66b3e
SA		 2189static ssize_t
2190smiapp_sysfs_ident_read(struct device *dev, struct device_attribute *attr,
2191 char *buf)
2192{
2193 struct v4l2_subdev *subdev = i2c_get_clientdata(to_i2c_client(dev));
2194 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2195 struct smiapp_module_info *minfo = &sensor->minfo;
2196
2197 return snprintf(buf, PAGE_SIZE, "%2.2x%4.4x%2.2x\n",
2198 minfo->manufacturer_id, minfo->model_id,
2199 minfo->revision_number_major) + 1;
2200}
2201
2202static DEVICE_ATTR(ident, S_IRUGO, smiapp_sysfs_ident_read, NULL);
2203
ccfc97bd
SA		 2204/* -----------------------------------------------------------------------------
2205 * V4L2 subdev core operations
2206 */
2207
2208static int smiapp_identify_module(struct v4l2_subdev *subdev)
2209{
2210 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2211 struct i2c_client *client = v4l2_get_subdevdata(subdev);
2212 struct smiapp_module_info *minfo = &sensor->minfo;
2213 unsigned int i;
2214 int rval = 0;
2215
2216 minfo->name = SMIAPP_NAME;
2217
2218 /* Module info */
98add8e8
SA		 2219 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MANUFACTURER_ID,
2220 &minfo->manufacturer_id);
ccfc97bd 2221 if (!rval)
98add8e8
SA		 2222 rval = smiapp_read_8only(sensor, SMIAPP_REG_U16_MODEL_ID,
2223 &minfo->model_id);
ccfc97bd 2224 if (!rval)
98add8e8
SA		 2225 rval = smiapp_read_8only(sensor,
2226 SMIAPP_REG_U8_REVISION_NUMBER_MAJOR,
2227 &minfo->revision_number_major);
ccfc97bd 2228 if (!rval)
98add8e8
SA		 2229 rval = smiapp_read_8only(sensor,
2230 SMIAPP_REG_U8_REVISION_NUMBER_MINOR,
2231 &minfo->revision_number_minor);
ccfc97bd 2232 if (!rval)
98add8e8
SA		 2233 rval = smiapp_read_8only(sensor,
2234 SMIAPP_REG_U8_MODULE_DATE_YEAR,
2235 &minfo->module_year);
ccfc97bd 2236 if (!rval)
98add8e8
SA		 2237 rval = smiapp_read_8only(sensor,
2238 SMIAPP_REG_U8_MODULE_DATE_MONTH,
2239 &minfo->module_month);
ccfc97bd 2240 if (!rval)
98add8e8
SA		 2241 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_MODULE_DATE_DAY,
2242 &minfo->module_day);
ccfc97bd
SA		 2243
2244 /* Sensor info */
2245 if (!rval)
98add8e8
SA		 2246 rval = smiapp_read_8only(sensor,
2247 SMIAPP_REG_U8_SENSOR_MANUFACTURER_ID,
2248 &minfo->sensor_manufacturer_id);
ccfc97bd 2249 if (!rval)
98add8e8
SA		 2250 rval = smiapp_read_8only(sensor,
2251 SMIAPP_REG_U16_SENSOR_MODEL_ID,
2252 &minfo->sensor_model_id);
ccfc97bd 2253 if (!rval)
98add8e8
SA		 2254 rval = smiapp_read_8only(sensor,
2255 SMIAPP_REG_U8_SENSOR_REVISION_NUMBER,
2256 &minfo->sensor_revision_number);
ccfc97bd 2257 if (!rval)
98add8e8
SA		 2258 rval = smiapp_read_8only(sensor,
2259 SMIAPP_REG_U8_SENSOR_FIRMWARE_VERSION,
2260 &minfo->sensor_firmware_version);
ccfc97bd
SA		 2261
2262 /* SMIA */
2263 if (!rval)
98add8e8
SA		 2264 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIA_VERSION,
2265 &minfo->smia_version);
ccfc97bd 2266 if (!rval)
98add8e8
SA		 2267 rval = smiapp_read_8only(sensor, SMIAPP_REG_U8_SMIAPP_VERSION,
2268 &minfo->smiapp_version);
ccfc97bd
SA		 2269
2270 if (rval) {
2271 dev_err(&client->dev, "sensor detection failed\n");
2272 return -ENODEV;
2273 }
2274
2275 dev_dbg(&client->dev, "module 0x%2.2x-0x%4.4x\n",
2276 minfo->manufacturer_id, minfo->model_id);
2277
2278 dev_dbg(&client->dev,
2279 "module revision 0x%2.2x-0x%2.2x date %2.2d-%2.2d-%2.2d\n",
2280 minfo->revision_number_major, minfo->revision_number_minor,
2281 minfo->module_year, minfo->module_month, minfo->module_day);
2282
2283 dev_dbg(&client->dev, "sensor 0x%2.2x-0x%4.4x\n",
2284 minfo->sensor_manufacturer_id, minfo->sensor_model_id);
2285
2286 dev_dbg(&client->dev,
2287 "sensor revision 0x%2.2x firmware version 0x%2.2x\n",
2288 minfo->sensor_revision_number, minfo->sensor_firmware_version);
2289
2290 dev_dbg(&client->dev, "smia version %2.2d smiapp version %2.2d\n",
2291 minfo->smia_version, minfo->smiapp_version);
2292
2293 /*
2294 * Some modules have bad data in the lvalues below. Hope the
2295 * rvalues have better stuff. The lvalues are module
2296 * parameters whereas the rvalues are sensor parameters.
2297 */
2298 if (!minfo->manufacturer_id && !minfo->model_id) {
2299 minfo->manufacturer_id = minfo->sensor_manufacturer_id;
2300 minfo->model_id = minfo->sensor_model_id;
2301 minfo->revision_number_major = minfo->sensor_revision_number;
2302 }
2303
2304 for (i = 0; i < ARRAY_SIZE(smiapp_module_idents); i++) {
2305 if (smiapp_module_idents[i].manufacturer_id
2306 != minfo->manufacturer_id)
2307 continue;
2308 if (smiapp_module_idents[i].model_id != minfo->model_id)
2309 continue;
2310 if (smiapp_module_idents[i].flags
2311 & SMIAPP_MODULE_IDENT_FLAG_REV_LE) {
2312 if (smiapp_module_idents[i].revision_number_major
2313 < minfo->revision_number_major)
2314 continue;
2315 } else {
2316 if (smiapp_module_idents[i].revision_number_major
2317 != minfo->revision_number_major)
2318 continue;
2319 }
2320
2321 minfo->name = smiapp_module_idents[i].name;
2322 minfo->quirk = smiapp_module_idents[i].quirk;
2323 break;
2324 }
2325
2326 if (i >= ARRAY_SIZE(smiapp_module_idents))
2327 dev_warn(&client->dev,
2328 "no quirks for this module; let's hope it's fully compliant\n");
2329
2330 dev_dbg(&client->dev, "the sensor is called %s, ident %2.2x%4.4x%2.2x\n",
2331 minfo->name, minfo->manufacturer_id, minfo->model_id,
2332 minfo->revision_number_major);
2333
2334 strlcpy(subdev->name, sensor->minfo.name, sizeof(subdev->name));
2335
2336 return 0;
2337}
2338
2339static const struct v4l2_subdev_ops smiapp_ops;
2340static const struct v4l2_subdev_internal_ops smiapp_internal_ops;
2341static const struct media_entity_operations smiapp_entity_ops;
2342
2343static int smiapp_registered(struct v4l2_subdev *subdev)
2344{
2345 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2346 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1e9240b3 2347 struct smiapp_pll *pll = &sensor->pll;
ccfc97bd
SA		 2348 struct smiapp_subdev *last = NULL;
2349 u32 tmp;
2350 unsigned int i;
2351 int rval;
2352
5fba9888 2353 sensor->vana = devm_regulator_get(&client->dev, "vana");
ccfc97bd
SA		 2354 if (IS_ERR(sensor->vana)) {
2355 dev_err(&client->dev, "could not get regulator for vana\n");
24644035 2356 return PTR_ERR(sensor->vana);
ccfc97bd
SA		 2357 }
2358
2547428d 2359 if (!sensor->platform_data->set_xclk) {
a354177f 2360 sensor->ext_clk = devm_clk_get(&client->dev, "ext_clk");
2547428d 2361 if (IS_ERR(sensor->ext_clk)) {
a354177f 2362 dev_err(&client->dev, "could not get clock\n");
24644035 2363 return PTR_ERR(sensor->ext_clk);
2547428d
SA		 2364 }
2365
2366 rval = clk_set_rate(sensor->ext_clk,
2367 sensor->platform_data->ext_clk);
2368 if (rval < 0) {
2369 dev_err(&client->dev,
a354177f 2370 "unable to set clock freq to %u\n",
2547428d 2371 sensor->platform_data->ext_clk);
24644035 2372 return rval;
2547428d
SA		 2373 }
2374 }
2375
9945374e 2376 if (gpio_is_valid(sensor->platform_data->xshutdown)) {
24644035
SA		 2377 rval = devm_gpio_request_one(
2378 &client->dev, sensor->platform_data->xshutdown, 0,
2379 "SMIA++ xshutdown");
2380 if (rval < 0) {
ccfc97bd
SA		 2381 dev_err(&client->dev,
2382 "unable to acquire reset gpio %d\n",
2383 sensor->platform_data->xshutdown);
24644035 2384 return rval;
ccfc97bd
SA		 2385 }
2386 }
2387
2388 rval = smiapp_power_on(sensor);
b015ba29
LP		 2389 if (rval)
2390 return -ENODEV;
ccfc97bd
SA		 2391
2392 rval = smiapp_identify_module(subdev);
2393 if (rval) {
2394 rval = -ENODEV;
2395 goto out_power_off;
2396 }
2397
2398 rval = smiapp_get_all_limits(sensor);
2399 if (rval) {
2400 rval = -ENODEV;
2401 goto out_power_off;
2402 }
2403
2404 /*
2405 * Handle Sensor Module orientation on the board.
2406 *
2407 * The application of H-FLIP and V-FLIP on the sensor is modified by
2408 * the sensor orientation on the board.
2409 *
2410 * For SMIAPP_BOARD_SENSOR_ORIENT_180 the default behaviour is to set
2411 * both H-FLIP and V-FLIP for normal operation which also implies
2412 * that a set/unset operation for user space HFLIP and VFLIP v4l2
2413 * controls will need to be internally inverted.
2414 *
2415 * Rotation also changes the bayer pattern.
2416 */
2417 if (sensor->platform_data->module_board_orient ==
2418 SMIAPP_MODULE_BOARD_ORIENT_180)
2419 sensor->hvflip_inv_mask = SMIAPP_IMAGE_ORIENTATION_HFLIP |
2420 SMIAPP_IMAGE_ORIENTATION_VFLIP;
2421
e5a3f7b8
SA		 2422 rval = smiapp_call_quirk(sensor, limits);
2423 if (rval) {
2424 dev_err(&client->dev, "limits quirks failed\n");
2425 goto out_power_off;
2426 }
2427
ccfc97bd
SA		 2428 rval = smiapp_get_mbus_formats(sensor);
2429 if (rval) {
2430 rval = -ENODEV;
2431 goto out_power_off;
2432 }
2433
2434 if (sensor->limits[SMIAPP_LIMIT_BINNING_CAPABILITY]) {
2435 u32 val;
2436
1e73eea7 2437 rval = smiapp_read(sensor,
ccfc97bd
SA		 2438 SMIAPP_REG_U8_BINNING_SUBTYPES, &val);
2439 if (rval < 0) {
2440 rval = -ENODEV;
2441 goto out_power_off;
2442 }
2443 sensor->nbinning_subtypes = min_t(u8, val,
2444 SMIAPP_BINNING_SUBTYPES);
2445
2446 for (i = 0; i < sensor->nbinning_subtypes; i++) {
2447 rval = smiapp_read(
1e73eea7 2448 sensor, SMIAPP_REG_U8_BINNING_TYPE_n(i), &val);
ccfc97bd
SA		 2449 if (rval < 0) {
2450 rval = -ENODEV;
2451 goto out_power_off;
2452 }
2453 sensor->binning_subtypes[i] =
2454 *(struct smiapp_binning_subtype *)&val;
2455
2456 dev_dbg(&client->dev, "binning %xx%x\n",
2457 sensor->binning_subtypes[i].horizontal,
2458 sensor->binning_subtypes[i].vertical);
2459 }
2460 }
2461 sensor->binning_horizontal = 1;
2462 sensor->binning_vertical = 1;
2463
eba66b3e
SA		 2464 if (device_create_file(&client->dev, &dev_attr_ident) != 0) {
2465 dev_err(&client->dev, "sysfs ident entry creation failed\n");
2466 rval = -ENOENT;
2467 goto out_power_off;
2468 }
ccfc97bd
SA		 2469 /* SMIA++ NVM initialization - it will be read from the sensor
2470 * when it is first requested by userspace.
2471 */
2472 if (sensor->minfo.smiapp_version && sensor->platform_data->nvm_size) {
31c1d17b
SK		 2473 sensor->nvm = devm_kzalloc(&client->dev,
2474 sensor->platform_data->nvm_size, GFP_KERNEL);
ccfc97bd
SA		 2475 if (sensor->nvm == NULL) {
2476 dev_err(&client->dev, "nvm buf allocation failed\n");
2477 rval = -ENOMEM;
eba66b3e 2478 goto out_ident_release;
ccfc97bd
SA		 2479 }
2480
2481 if (device_create_file(&client->dev, &dev_attr_nvm) != 0) {
2482 dev_err(&client->dev, "sysfs nvm entry failed\n");
2483 rval = -EBUSY;
eba66b3e 2484 goto out_ident_release;
ccfc97bd
SA		 2485 }
2486 }
2487
ccfc97bd
SA		 2488 /* We consider this as profile 0 sensor if any of these are zero. */
2489 if (!sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV] ||
2490 !sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV] ||
2491 !sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV] ||
2492 !sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV]) {
2493 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_0;
2494 } else if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2495 != SMIAPP_SCALING_CAPABILITY_NONE) {
2496 if (sensor->limits[SMIAPP_LIMIT_SCALING_CAPABILITY]
2497 == SMIAPP_SCALING_CAPABILITY_HORIZONTAL)
2498 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_1;
2499 else
2500 sensor->minfo.smiapp_profile = SMIAPP_PROFILE_2;
2501 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2502 sensor->ssds_used++;
2503 } else if (sensor->limits[SMIAPP_LIMIT_DIGITAL_CROP_CAPABILITY]
2504 == SMIAPP_DIGITAL_CROP_CAPABILITY_INPUT_CROP) {
2505 sensor->scaler = &sensor->ssds[sensor->ssds_used];
2506 sensor->ssds_used++;
2507 }
2508 sensor->binner = &sensor->ssds[sensor->ssds_used];
2509 sensor->ssds_used++;
2510 sensor->pixel_array = &sensor->ssds[sensor->ssds_used];
2511 sensor->ssds_used++;
2512
2513 sensor->scale_m = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2514
2515 for (i = 0; i < SMIAPP_SUBDEVS; i++) {
2516 struct {
2517 struct smiapp_subdev *ssd;
2518 char *name;
2519 } const __this[] = {
2520 { sensor->scaler, "scaler", },
2521 { sensor->binner, "binner", },
2522 { sensor->pixel_array, "pixel array", },
2523 }, *_this = &__this[i];
2524 struct smiapp_subdev *this = _this->ssd;
2525
2526 if (!this)
2527 continue;
2528
2529 if (this != sensor->src)
2530 v4l2_subdev_init(&this->sd, &smiapp_ops);
2531
2532 this->sensor = sensor;
2533
2534 if (this == sensor->pixel_array) {
2535 this->npads = 1;
2536 } else {
2537 this->npads = 2;
2538 this->source_pad = 1;
2539 }
2540
2541 snprintf(this->sd.name,
f8d36b89
SA		 2542 sizeof(this->sd.name), "%s %s %d-%4.4x",
2543 sensor->minfo.name, _this->name,
2544 i2c_adapter_id(client->adapter), client->addr);
ccfc97bd
SA		 2545
2546 this->sink_fmt.width =
2547 sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2548 this->sink_fmt.height =
2549 sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2550 this->compose.width = this->sink_fmt.width;
2551 this->compose.height = this->sink_fmt.height;
2552 this->crop[this->source_pad] = this->compose;
2553 this->pads[this->source_pad].flags = MEDIA_PAD_FL_SOURCE;
2554 if (this != sensor->pixel_array) {
2555 this->crop[this->sink_pad] = this->compose;
2556 this->pads[this->sink_pad].flags = MEDIA_PAD_FL_SINK;
2557 }
2558
2559 this->sd.entity.ops = &smiapp_entity_ops;
2560
2561 if (last == NULL) {
2562 last = this;
2563 continue;
2564 }
2565
2566 this->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2567 this->sd.internal_ops = &smiapp_internal_ops;
2568 this->sd.owner = NULL;
2569 v4l2_set_subdevdata(&this->sd, client);
2570
2571 rval = media_entity_init(&this->sd.entity,
2572 this->npads, this->pads, 0);
2573 if (rval) {
2574 dev_err(&client->dev,
2575 "media_entity_init failed\n");
2576 goto out_nvm_release;
2577 }
2578
2579 rval = media_entity_create_link(&this->sd.entity,
2580 this->source_pad,
2581 &last->sd.entity,
2582 last->sink_pad,
2583 MEDIA_LNK_FL_ENABLED |
2584 MEDIA_LNK_FL_IMMUTABLE);
2585 if (rval) {
2586 dev_err(&client->dev,
2587 "media_entity_create_link failed\n");
2588 goto out_nvm_release;
2589 }
2590
2591 rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev,
2592 &this->sd);
2593 if (rval) {
2594 dev_err(&client->dev,
2595 "v4l2_device_register_subdev failed\n");
2596 goto out_nvm_release;
2597 }
2598
2599 last = this;
2600 }
2601
2602 dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile);
2603
2604 sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
2605
2606 /* final steps */
2607 smiapp_read_frame_fmt(sensor);
2608 rval = smiapp_init_controls(sensor);
2609 if (rval < 0)
2610 goto out_nvm_release;
2611
1e9240b3 2612 /* prepare PLL configuration input values */
f5984bbd
SA		 2613 pll->bus_type = SMIAPP_PLL_BUS_TYPE_CSI2;
2614 pll->csi2.lanes = sensor->platform_data->lanes;
1e9240b3 2615 pll->ext_clk_freq_hz = sensor->platform_data->ext_clk;
03efb2a0
SA		 2616 pll->flags = smiapp_call_quirk(sensor, pll_flags);
2617
1e9240b3
SA		 2618 /* Profile 0 sensors have no separate OP clock branch. */
2619 if (sensor->minfo.smiapp_profile == SMIAPP_PROFILE_0)
2620 pll->flags |= SMIAPP_PLL_FLAG_NO_OP_CLOCKS;
1e9240b3
SA		 2621 pll->scale_n = sensor->limits[SMIAPP_LIMIT_SCALER_N_MIN];
2622
ccfc97bd
SA		 2623 rval = smiapp_update_mode(sensor);
2624 if (rval) {
2625 dev_err(&client->dev, "update mode failed\n");
2626 goto out_nvm_release;
2627 }
2628
2629 sensor->streaming = false;
2630 sensor->dev_init_done = true;
2631
2632 /* check flash capability */
1e73eea7 2633 rval = smiapp_read(sensor, SMIAPP_REG_U8_FLASH_MODE_CAPABILITY, &tmp);
ccfc97bd
SA		 2634 sensor->flash_capability = tmp;
2635 if (rval)
2636 goto out_nvm_release;
2637
2638 smiapp_power_off(sensor);
2639
2640 return 0;
2641
2642out_nvm_release:
2643 device_remove_file(&client->dev, &dev_attr_nvm);
2644
eba66b3e
SA		 2645out_ident_release:
2646 device_remove_file(&client->dev, &dev_attr_ident);
2647
ccfc97bd 2648out_power_off:
ccfc97bd 2649 smiapp_power_off(sensor);
ccfc97bd
SA		 2650 return rval;
2651}
2652
2653static int smiapp_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2654{
2655 struct smiapp_subdev *ssd = to_smiapp_subdev(sd);
2656 struct smiapp_sensor *sensor = ssd->sensor;
2657 u32 mbus_code =
2658 smiapp_csi_data_formats[smiapp_pixel_order(sensor)].code;
2659 unsigned int i;
2660
2661 mutex_lock(&sensor->mutex);
2662
2663 for (i = 0; i < ssd->npads; i++) {
2664 struct v4l2_mbus_framefmt *try_fmt =
2665 v4l2_subdev_get_try_format(fh, i);
2666 struct v4l2_rect *try_crop = v4l2_subdev_get_try_crop(fh, i);
2667 struct v4l2_rect *try_comp;
2668
2669 try_fmt->width = sensor->limits[SMIAPP_LIMIT_X_ADDR_MAX] + 1;
2670 try_fmt->height = sensor->limits[SMIAPP_LIMIT_Y_ADDR_MAX] + 1;
2671 try_fmt->code = mbus_code;
7ed0b291 2672 try_fmt->field = V4L2_FIELD_NONE;
ccfc97bd
SA		 2673
2674 try_crop->top = 0;
2675 try_crop->left = 0;
2676 try_crop->width = try_fmt->width;
2677 try_crop->height = try_fmt->height;
2678
2679 if (ssd != sensor->pixel_array)
2680 continue;
2681
2682 try_comp = v4l2_subdev_get_try_compose(fh, i);
2683 *try_comp = *try_crop;
2684 }
2685
2686 mutex_unlock(&sensor->mutex);
2687
2688 return smiapp_set_power(sd, 1);
2689}
2690
2691static int smiapp_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
2692{
2693 return smiapp_set_power(sd, 0);
2694}
2695
2696static const struct v4l2_subdev_video_ops smiapp_video_ops = {
2697 .s_stream = smiapp_set_stream,
2698};
2699
2700static const struct v4l2_subdev_core_ops smiapp_core_ops = {
2701 .s_power = smiapp_set_power,
2702};
2703
2704static const struct v4l2_subdev_pad_ops smiapp_pad_ops = {
2705 .enum_mbus_code = smiapp_enum_mbus_code,
2706 .get_fmt = smiapp_get_format,
2707 .set_fmt = smiapp_set_format,
2708 .get_selection = smiapp_get_selection,
2709 .set_selection = smiapp_set_selection,
2710};
2711
2712static const struct v4l2_subdev_sensor_ops smiapp_sensor_ops = {
2713 .g_skip_frames = smiapp_get_skip_frames,
2714};
2715
2716static const struct v4l2_subdev_ops smiapp_ops = {
2717 .core = &smiapp_core_ops,
2718 .video = &smiapp_video_ops,
2719 .pad = &smiapp_pad_ops,
2720 .sensor = &smiapp_sensor_ops,
2721};
2722
2723static const struct media_entity_operations smiapp_entity_ops = {
2724 .link_validate = v4l2_subdev_link_validate,
2725};
2726
2727static const struct v4l2_subdev_internal_ops smiapp_internal_src_ops = {
2728 .registered = smiapp_registered,
2729 .open = smiapp_open,
2730 .close = smiapp_close,
2731};
2732
2733static const struct v4l2_subdev_internal_ops smiapp_internal_ops = {
2734 .open = smiapp_open,
2735 .close = smiapp_close,
2736};
2737
2738/* -----------------------------------------------------------------------------
2739 * I2C Driver
2740 */
2741
2742#ifdef CONFIG_PM
2743
2744static int smiapp_suspend(struct device *dev)
2745{
2746 struct i2c_client *client = to_i2c_client(dev);
2747 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2748 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2749 bool streaming;
2750
2751 BUG_ON(mutex_is_locked(&sensor->mutex));
2752
2753 if (sensor->power_count == 0)
2754 return 0;
2755
2756 if (sensor->streaming)
2757 smiapp_stop_streaming(sensor);
2758
2759 streaming = sensor->streaming;
2760
2761 smiapp_power_off(sensor);
2762
2763 /* save state for resume */
2764 sensor->streaming = streaming;
2765
2766 return 0;
2767}
2768
2769static int smiapp_resume(struct device *dev)
2770{
2771 struct i2c_client *client = to_i2c_client(dev);
2772 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2773 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2774 int rval;
2775
2776 if (sensor->power_count == 0)
2777 return 0;
2778
2779 rval = smiapp_power_on(sensor);
2780 if (rval)
2781 return rval;
2782
2783 if (sensor->streaming)
2784 rval = smiapp_start_streaming(sensor);
2785
2786 return rval;
2787}
2788
2789#else
2790
2791#define smiapp_suspend NULL
2792#define smiapp_resume NULL
2793
2794#endif /* CONFIG_PM */
2795
2796static int smiapp_probe(struct i2c_client *client,
2797 const struct i2c_device_id *devid)
2798{
2799 struct smiapp_sensor *sensor;
ccfc97bd
SA		 2800
2801 if (client->dev.platform_data == NULL)
2802 return -ENODEV;
2803
31c1d17b 2804 sensor = devm_kzalloc(&client->dev, sizeof(*sensor), GFP_KERNEL);
ccfc97bd
SA		 2805 if (sensor == NULL)
2806 return -ENOMEM;
2807
2808 sensor->platform_data = client->dev.platform_data;
2809 mutex_init(&sensor->mutex);
2810 mutex_init(&sensor->power_mutex);
2811 sensor->src = &sensor->ssds[sensor->ssds_used];
2812
2813 v4l2_i2c_subdev_init(&sensor->src->sd, client, &smiapp_ops);
2814 sensor->src->sd.internal_ops = &smiapp_internal_src_ops;
2815 sensor->src->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
2816 sensor->src->sensor = sensor;
2817
2818 sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE;
31c1d17b 2819 return media_entity_init(&sensor->src->sd.entity, 2,
ccfc97bd 2820 sensor->src->pads, 0);
ccfc97bd
SA		 2821}
2822
bf306900 2823static int smiapp_remove(struct i2c_client *client)
ccfc97bd
SA		 2824{
2825 struct v4l2_subdev *subdev = i2c_get_clientdata(client);
2826 struct smiapp_sensor *sensor = to_smiapp_sensor(subdev);
2827 unsigned int i;
2828
2829 if (sensor->power_count) {
9945374e 2830 if (gpio_is_valid(sensor->platform_data->xshutdown))
ccfc97bd 2831 gpio_set_value(sensor->platform_data->xshutdown, 0);
2547428d
SA		 2832 if (sensor->platform_data->set_xclk)
2833 sensor->platform_data->set_xclk(&sensor->src->sd, 0);
2834 else
d0aae004 2835 clk_disable_unprepare(sensor->ext_clk);
ccfc97bd
SA		 2836 sensor->power_count = 0;
2837 }
2838
eba66b3e 2839 device_remove_file(&client->dev, &dev_attr_ident);
31c1d17b 2840 if (sensor->nvm)
ccfc97bd 2841 device_remove_file(&client->dev, &dev_attr_nvm);
ccfc97bd
SA		 2842
2843 for (i = 0; i < sensor->ssds_used; i++) {
ccfc97bd 2844 v4l2_device_unregister_subdev(&sensor->ssds[i].sd);
2a3e7256 2845 media_entity_cleanup(&sensor->ssds[i].sd.entity);
ccfc97bd
SA		 2846 }
2847 smiapp_free_controls(sensor);
ccfc97bd
SA		 2848
2849 return 0;
2850}
2851
2852static const struct i2c_device_id smiapp_id_table[] = {
2853 { SMIAPP_NAME, 0 },
2854 { },
2855};
2856MODULE_DEVICE_TABLE(i2c, smiapp_id_table);
2857
2858static const struct dev_pm_ops smiapp_pm_ops = {
2859 .suspend = smiapp_suspend,
2860 .resume = smiapp_resume,
2861};
2862
2863static struct i2c_driver smiapp_i2c_driver = {
2864 .driver = {
2865 .name = SMIAPP_NAME,
2866 .pm = &smiapp_pm_ops,
2867 },
2868 .probe = smiapp_probe,
bf306900 2869 .remove = smiapp_remove,
ccfc97bd
SA		 2870 .id_table = smiapp_id_table,
2871};
2872
2873module_i2c_driver(smiapp_i2c_driver);
2874
8c5dff90 2875MODULE_AUTHOR("Sakari Ailus <sakari.ailus@iki.fi>");
ccfc97bd
SA		 2876MODULE_DESCRIPTION("Generic SMIA/SMIA++ camera module driver");
2877MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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