1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Sony imx335 Camera Sensor Driver
4 *
5 * Copyright (C) 2021 Intel Corporation
6 */
7 #include <linux/unaligned.h>
8
9 #include <linux/clk.h>
10 #include <linux/delay.h>
11 #include <linux/i2c.h>
12 #include <linux/module.h>
13 #include <linux/pm_runtime.h>
14 #include <linux/regmap.h>
15
16 #include <media/v4l2-cci.h>
17 #include <media/v4l2-ctrls.h>
18 #include <media/v4l2-fwnode.h>
19 #include <media/v4l2-subdev.h>
20
21 /* Streaming Mode */
22 #define IMX335_REG_MODE_SELECT CCI_REG8(0x3000)
23 #define IMX335_MODE_STANDBY 0x01
24 #define IMX335_MODE_STREAMING 0x00
25
26 /* Group hold register */
27 #define IMX335_REG_HOLD CCI_REG8(0x3001)
28
29 #define IMX335_REG_MASTER_MODE CCI_REG8(0x3002)
30 #define IMX335_REG_BCWAIT_TIME CCI_REG8(0x300c)
31 #define IMX335_REG_CPWAIT_TIME CCI_REG8(0x300d)
32 #define IMX335_REG_WINMODE CCI_REG8(0x3018)
33 #define IMX335_REG_HTRIMMING_START CCI_REG16_LE(0x302c)
34 #define IMX335_REG_HNUM CCI_REG8(0x302e)
35
36 /* Lines per frame */
37 #define IMX335_REG_VMAX CCI_REG24_LE(0x3030)
38
39 #define IMX335_REG_OPB_SIZE_V CCI_REG8(0x304c)
40 #define IMX335_REG_ADBIT CCI_REG8(0x3050)
41 #define IMX335_REG_Y_OUT_SIZE CCI_REG16_LE(0x3056)
42
43 #define IMX335_REG_SHUTTER CCI_REG24_LE(0x3058)
44 #define IMX335_EXPOSURE_MIN 1
45 #define IMX335_EXPOSURE_OFFSET 9
46 #define IMX335_EXPOSURE_STEP 1
47 #define IMX335_EXPOSURE_DEFAULT 0x0648
48
49 #define IMX335_REG_AREA3_ST_ADR_1 CCI_REG16_LE(0x3074)
50 #define IMX335_REG_AREA3_WIDTH_1 CCI_REG16_LE(0x3076)
51
52 /* Analog and Digital gain control */
53 #define IMX335_REG_GAIN CCI_REG8(0x30e8)
54 #define IMX335_AGAIN_MIN 0
55 #define IMX335_AGAIN_MAX 100
56 #define IMX335_AGAIN_STEP 1
57 #define IMX335_AGAIN_DEFAULT 0
58
59 #define IMX335_REG_TPG_TESTCLKEN CCI_REG8(0x3148)
60
61 #define IMX335_REG_INCLKSEL1 CCI_REG16_LE(0x314c)
62 #define IMX335_REG_INCLKSEL2 CCI_REG8(0x315a)
63 #define IMX335_REG_INCLKSEL3 CCI_REG8(0x3168)
64 #define IMX335_REG_INCLKSEL4 CCI_REG8(0x316a)
65
66 #define IMX335_REG_MDBIT CCI_REG8(0x319d)
67 #define IMX335_REG_SYSMODE CCI_REG8(0x319e)
68
69 #define IMX335_REG_XVS_XHS_DRV CCI_REG8(0x31a1)
70
71 /* Test pattern generator */
72 #define IMX335_REG_TPG_DIG_CLP_MODE CCI_REG8(0x3280)
73 #define IMX335_REG_TPG_EN_DUOUT CCI_REG8(0x329c)
74 #define IMX335_REG_TPG CCI_REG8(0x329e)
75 #define IMX335_TPG_ALL_000 0
76 #define IMX335_TPG_ALL_FFF 1
77 #define IMX335_TPG_ALL_555 2
78 #define IMX335_TPG_ALL_AAA 3
79 #define IMX335_TPG_TOG_555_AAA 4
80 #define IMX335_TPG_TOG_AAA_555 5
81 #define IMX335_TPG_TOG_000_555 6
82 #define IMX335_TPG_TOG_555_000 7
83 #define IMX335_TPG_TOG_000_FFF 8
84 #define IMX335_TPG_TOG_FFF_000 9
85 #define IMX335_TPG_H_COLOR_BARS 10
86 #define IMX335_TPG_V_COLOR_BARS 11
87 #define IMX335_REG_TPG_COLORWIDTH CCI_REG8(0x32a0)
88
89 #define IMX335_REG_BLKLEVEL CCI_REG16_LE(0x3302)
90
91 #define IMX335_REG_WRJ_OPEN CCI_REG8(0x336c)
92
93 #define IMX335_REG_ADBIT1 CCI_REG16_LE(0x341c)
94
95 /* Chip ID */
96 #define IMX335_REG_ID CCI_REG8(0x3912)
97 #define IMX335_ID 0x00
98
99 /* Data Lanes */
100 #define IMX335_REG_LANEMODE CCI_REG8(0x3a01)
101 #define IMX335_2LANE 1
102 #define IMX335_4LANE 3
103
104 #define IMX335_REG_TCLKPOST CCI_REG16_LE(0x3a18)
105 #define IMX335_REG_TCLKPREPARE CCI_REG16_LE(0x3a1a)
106 #define IMX335_REG_TCLK_TRAIL CCI_REG16_LE(0x3a1c)
107 #define IMX335_REG_TCLK_ZERO CCI_REG16_LE(0x3a1e)
108 #define IMX335_REG_THS_PREPARE CCI_REG16_LE(0x3a20)
109 #define IMX335_REG_THS_ZERO CCI_REG16_LE(0x3a22)
110 #define IMX335_REG_THS_TRAIL CCI_REG16_LE(0x3a24)
111 #define IMX335_REG_THS_EXIT CCI_REG16_LE(0x3a26)
112 #define IMX335_REG_TPLX CCI_REG16_LE(0x3a28)
113
114 /* Input clock rate */
115 #define IMX335_INCLK_RATE 24000000
116
117 /* CSI2 HW configuration */
118 #define IMX335_LINK_FREQ_594MHz 594000000LL
119 #define IMX335_LINK_FREQ_445MHz 445500000LL
120
121 #define IMX335_NUM_DATA_LANES 4
122
123 /* IMX335 native and active pixel array size. */
124 #define IMX335_NATIVE_WIDTH 2616U
125 #define IMX335_NATIVE_HEIGHT 1964U
126 #define IMX335_PIXEL_ARRAY_LEFT 12U
127 #define IMX335_PIXEL_ARRAY_TOP 12U
128 #define IMX335_PIXEL_ARRAY_WIDTH 2592U
129 #define IMX335_PIXEL_ARRAY_HEIGHT 1944U
130
131 /**
132 * struct imx335_reg_list - imx335 sensor register list
133 * @num_of_regs: Number of registers in the list
134 * @regs: Pointer to register list
135 */
136 struct imx335_reg_list {
137 u32 num_of_regs;
138 const struct cci_reg_sequence *regs;
139 };
140
141 static const char * const imx335_supply_name[] = {
142 "avdd", /* Analog (2.9V) supply */
143 "ovdd", /* Digital I/O (1.8V) supply */
144 "dvdd", /* Digital Core (1.2V) supply */
145 };
146
147 /**
148 * struct imx335_mode - imx335 sensor mode structure
149 * @width: Frame width
150 * @height: Frame height
151 * @code: Format code
152 * @hblank: Horizontal blanking in lines
153 * @vblank: Vertical blanking in lines
154 * @vblank_min: Minimum vertical blanking in lines
155 * @vblank_max: Maximum vertical blanking in lines
156 * @pclk: Sensor pixel clock
157 * @reg_list: Register list for sensor mode
158 */
159 struct imx335_mode {
160 u32 width;
161 u32 height;
162 u32 code;
163 u32 hblank;
164 u32 vblank;
165 u32 vblank_min;
166 u32 vblank_max;
167 u64 pclk;
168 struct imx335_reg_list reg_list;
169 };
170
171 /**
172 * struct imx335 - imx335 sensor device structure
173 * @dev: Pointer to generic device
174 * @client: Pointer to i2c client
175 * @sd: V4L2 sub-device
176 * @pad: Media pad. Only one pad supported
177 * @reset_gpio: Sensor reset gpio
178 * @supplies: Regulator supplies to handle power control
179 * @cci: CCI register map
180 * @inclk: Sensor input clock
181 * @ctrl_handler: V4L2 control handler
182 * @link_freq_ctrl: Pointer to link frequency control
183 * @pclk_ctrl: Pointer to pixel clock control
184 * @hblank_ctrl: Pointer to horizontal blanking control
185 * @vblank_ctrl: Pointer to vertical blanking control
186 * @exp_ctrl: Pointer to exposure control
187 * @again_ctrl: Pointer to analog gain control
188 * @vblank: Vertical blanking in lines
189 * @lane_mode: Mode for number of connected data lanes
190 * @cur_mode: Pointer to current selected sensor mode
191 * @mutex: Mutex for serializing sensor controls
192 * @link_freq_bitmap: Menu bitmap for link_freq_ctrl
193 * @cur_mbus_code: Currently selected media bus format code
194 */
195 struct imx335 {
196 struct device *dev;
197 struct i2c_client *client;
198 struct v4l2_subdev sd;
199 struct media_pad pad;
200 struct gpio_desc *reset_gpio;
201 struct regulator_bulk_data supplies[ARRAY_SIZE(imx335_supply_name)];
202 struct regmap *cci;
203
204 struct clk *inclk;
205 struct v4l2_ctrl_handler ctrl_handler;
206 struct v4l2_ctrl *link_freq_ctrl;
207 struct v4l2_ctrl *pclk_ctrl;
208 struct v4l2_ctrl *hblank_ctrl;
209 struct v4l2_ctrl *vblank_ctrl;
210 struct {
211 struct v4l2_ctrl *exp_ctrl;
212 struct v4l2_ctrl *again_ctrl;
213 };
214 u32 vblank;
215 u32 lane_mode;
216 const struct imx335_mode *cur_mode;
217 struct mutex mutex;
218 unsigned long link_freq_bitmap;
219 u32 cur_mbus_code;
220 };
221
222 static const char * const imx335_tpg_menu[] = {
223 "Disabled",
224 "All 000h",
225 "All FFFh",
226 "All 555h",
227 "All AAAh",
228 "Toggle 555/AAAh",
229 "Toggle AAA/555h",
230 "Toggle 000/555h",
231 "Toggle 555/000h",
232 "Toggle 000/FFFh",
233 "Toggle FFF/000h",
234 "Horizontal color bars",
235 "Vertical color bars",
236 };
237
238 static const int imx335_tpg_val[] = {
239 IMX335_TPG_ALL_000,
240 IMX335_TPG_ALL_000,
241 IMX335_TPG_ALL_FFF,
242 IMX335_TPG_ALL_555,
243 IMX335_TPG_ALL_AAA,
244 IMX335_TPG_TOG_555_AAA,
245 IMX335_TPG_TOG_AAA_555,
246 IMX335_TPG_TOG_000_555,
247 IMX335_TPG_TOG_555_000,
248 IMX335_TPG_TOG_000_FFF,
249 IMX335_TPG_TOG_FFF_000,
250 IMX335_TPG_H_COLOR_BARS,
251 IMX335_TPG_V_COLOR_BARS,
252 };
253
254 /* Sensor mode registers */
255 static const struct cci_reg_sequence mode_2592x1940_regs[] = {
256 { IMX335_REG_MODE_SELECT, IMX335_MODE_STANDBY },
257 { IMX335_REG_MASTER_MODE, 0x00 },
258 { IMX335_REG_WINMODE, 0x04 },
259 { IMX335_REG_HTRIMMING_START, 48 },
260 { IMX335_REG_HNUM, 2592 },
261 { IMX335_REG_Y_OUT_SIZE, 1944 },
262 { IMX335_REG_AREA3_ST_ADR_1, 176 },
263 { IMX335_REG_AREA3_WIDTH_1, 3928 },
264 { IMX335_REG_OPB_SIZE_V, 0 },
265 { IMX335_REG_XVS_XHS_DRV, 0x00 },
266 { CCI_REG8(0x3288), 0x21 },
267 { CCI_REG8(0x328a), 0x02 },
268 { CCI_REG8(0x3414), 0x05 },
269 { CCI_REG8(0x3416), 0x18 },
270 { CCI_REG8(0x3648), 0x01 },
271 { CCI_REG8(0x364a), 0x04 },
272 { CCI_REG8(0x364c), 0x04 },
273 { CCI_REG8(0x3678), 0x01 },
274 { CCI_REG8(0x367c), 0x31 },
275 { CCI_REG8(0x367e), 0x31 },
276 { CCI_REG8(0x3706), 0x10 },
277 { CCI_REG8(0x3708), 0x03 },
278 { CCI_REG8(0x3714), 0x02 },
279 { CCI_REG8(0x3715), 0x02 },
280 { CCI_REG8(0x3716), 0x01 },
281 { CCI_REG8(0x3717), 0x03 },
282 { CCI_REG8(0x371c), 0x3d },
283 { CCI_REG8(0x371d), 0x3f },
284 { CCI_REG8(0x372c), 0x00 },
285 { CCI_REG8(0x372d), 0x00 },
286 { CCI_REG8(0x372e), 0x46 },
287 { CCI_REG8(0x372f), 0x00 },
288 { CCI_REG8(0x3730), 0x89 },
289 { CCI_REG8(0x3731), 0x00 },
290 { CCI_REG8(0x3732), 0x08 },
291 { CCI_REG8(0x3733), 0x01 },
292 { CCI_REG8(0x3734), 0xfe },
293 { CCI_REG8(0x3735), 0x05 },
294 { CCI_REG8(0x3740), 0x02 },
295 { CCI_REG8(0x375d), 0x00 },
296 { CCI_REG8(0x375e), 0x00 },
297 { CCI_REG8(0x375f), 0x11 },
298 { CCI_REG8(0x3760), 0x01 },
299 { CCI_REG8(0x3768), 0x1b },
300 { CCI_REG8(0x3769), 0x1b },
301 { CCI_REG8(0x376a), 0x1b },
302 { CCI_REG8(0x376b), 0x1b },
303 { CCI_REG8(0x376c), 0x1a },
304 { CCI_REG8(0x376d), 0x17 },
305 { CCI_REG8(0x376e), 0x0f },
306 { CCI_REG8(0x3776), 0x00 },
307 { CCI_REG8(0x3777), 0x00 },
308 { CCI_REG8(0x3778), 0x46 },
309 { CCI_REG8(0x3779), 0x00 },
310 { CCI_REG8(0x377a), 0x89 },
311 { CCI_REG8(0x377b), 0x00 },
312 { CCI_REG8(0x377c), 0x08 },
313 { CCI_REG8(0x377d), 0x01 },
314 { CCI_REG8(0x377e), 0x23 },
315 { CCI_REG8(0x377f), 0x02 },
316 { CCI_REG8(0x3780), 0xd9 },
317 { CCI_REG8(0x3781), 0x03 },
318 { CCI_REG8(0x3782), 0xf5 },
319 { CCI_REG8(0x3783), 0x06 },
320 { CCI_REG8(0x3784), 0xa5 },
321 { CCI_REG8(0x3788), 0x0f },
322 { CCI_REG8(0x378a), 0xd9 },
323 { CCI_REG8(0x378b), 0x03 },
324 { CCI_REG8(0x378c), 0xeb },
325 { CCI_REG8(0x378d), 0x05 },
326 { CCI_REG8(0x378e), 0x87 },
327 { CCI_REG8(0x378f), 0x06 },
328 { CCI_REG8(0x3790), 0xf5 },
329 { CCI_REG8(0x3792), 0x43 },
330 { CCI_REG8(0x3794), 0x7a },
331 { CCI_REG8(0x3796), 0xa1 },
332 { CCI_REG8(0x37b0), 0x36 },
333 { CCI_REG8(0x3a00), 0x00 },
334 };
335
336 static const struct cci_reg_sequence raw10_framefmt_regs[] = {
337 { IMX335_REG_ADBIT, 0x00 },
338 { IMX335_REG_MDBIT, 0x00 },
339 { IMX335_REG_ADBIT1, 0x1ff },
340 };
341
342 static const struct cci_reg_sequence raw12_framefmt_regs[] = {
343 { IMX335_REG_ADBIT, 0x01 },
344 { IMX335_REG_MDBIT, 0x01 },
345 { IMX335_REG_ADBIT1, 0x47 },
346 };
347
348 static const struct cci_reg_sequence mipi_data_rate_1188Mbps[] = {
349 { IMX335_REG_BCWAIT_TIME, 0x3b },
350 { IMX335_REG_CPWAIT_TIME, 0x2a },
351 { IMX335_REG_INCLKSEL1, 0x00c6 },
352 { IMX335_REG_INCLKSEL2, 0x02 },
353 { IMX335_REG_INCLKSEL3, 0xa0 },
354 { IMX335_REG_INCLKSEL4, 0x7e },
355 { IMX335_REG_SYSMODE, 0x01 },
356 { IMX335_REG_TCLKPOST, 0x8f },
357 { IMX335_REG_TCLKPREPARE, 0x4f },
358 { IMX335_REG_TCLK_TRAIL, 0x47 },
359 { IMX335_REG_TCLK_ZERO, 0x0137 },
360 { IMX335_REG_THS_PREPARE, 0x4f },
361 { IMX335_REG_THS_ZERO, 0x87 },
362 { IMX335_REG_THS_TRAIL, 0x4f },
363 { IMX335_REG_THS_EXIT, 0x7f },
364 { IMX335_REG_TPLX, 0x3f },
365 };
366
367 static const struct cci_reg_sequence mipi_data_rate_891Mbps[] = {
368 { IMX335_REG_BCWAIT_TIME, 0x3b },
369 { IMX335_REG_CPWAIT_TIME, 0x2a },
370 { IMX335_REG_INCLKSEL1, 0x0129 },
371 { IMX335_REG_INCLKSEL2, 0x06 },
372 { IMX335_REG_INCLKSEL3, 0xa0 },
373 { IMX335_REG_INCLKSEL4, 0x7e },
374 { IMX335_REG_SYSMODE, 0x02 },
375 { IMX335_REG_TCLKPOST, 0x7f },
376 { IMX335_REG_TCLKPREPARE, 0x37 },
377 { IMX335_REG_TCLK_TRAIL, 0x37 },
378 { IMX335_REG_TCLK_ZERO, 0xf7 },
379 { IMX335_REG_THS_PREPARE, 0x3f },
380 { IMX335_REG_THS_ZERO, 0x6f },
381 { IMX335_REG_THS_TRAIL, 0x3f },
382 { IMX335_REG_THS_EXIT, 0x5f },
383 { IMX335_REG_TPLX, 0x2f },
384 };
385
386 static const s64 link_freq[] = {
387 /* Corresponds to 1188Mbps data lane rate */
388 IMX335_LINK_FREQ_594MHz,
389 /* Corresponds to 891Mbps data lane rate */
390 IMX335_LINK_FREQ_445MHz,
391 };
392
393 static const struct imx335_reg_list link_freq_reglist[] = {
394 {
395 .num_of_regs = ARRAY_SIZE(mipi_data_rate_1188Mbps),
396 .regs = mipi_data_rate_1188Mbps,
397 },
398 {
399 .num_of_regs = ARRAY_SIZE(mipi_data_rate_891Mbps),
400 .regs = mipi_data_rate_891Mbps,
401 },
402 };
403
404 static const u32 imx335_mbus_codes[] = {
405 MEDIA_BUS_FMT_SRGGB12_1X12,
406 MEDIA_BUS_FMT_SRGGB10_1X10,
407 };
408
409 /* Supported sensor mode configurations */
410 static const struct imx335_mode supported_mode = {
411 .width = 2592,
412 .height = 1944,
413 .hblank = 342,
414 .vblank = 2556,
415 .vblank_min = 2556,
416 .vblank_max = 133060,
417 .pclk = 396000000,
418 .reg_list = {
419 .num_of_regs = ARRAY_SIZE(mode_2592x1940_regs),
420 .regs = mode_2592x1940_regs,
421 },
422 };
423
424 /**
425 * to_imx335() - imx335 V4L2 sub-device to imx335 device.
426 * @subdev: pointer to imx335 V4L2 sub-device
427 *
428 * Return: pointer to imx335 device
429 */
to_imx335(struct v4l2_subdev * subdev)430 static inline struct imx335 *to_imx335(struct v4l2_subdev *subdev)
431 {
432 return container_of(subdev, struct imx335, sd);
433 }
434
435 /**
436 * imx335_update_controls() - Update control ranges based on streaming mode
437 * @imx335: pointer to imx335 device
438 * @mode: pointer to imx335_mode sensor mode
439 *
440 * Return: 0 if successful, error code otherwise.
441 */
imx335_update_controls(struct imx335 * imx335,const struct imx335_mode * mode)442 static int imx335_update_controls(struct imx335 *imx335,
443 const struct imx335_mode *mode)
444 {
445 int ret;
446
447 ret = __v4l2_ctrl_s_ctrl(imx335->link_freq_ctrl,
448 __ffs(imx335->link_freq_bitmap));
449 if (ret)
450 return ret;
451
452 ret = __v4l2_ctrl_s_ctrl(imx335->hblank_ctrl, mode->hblank);
453 if (ret)
454 return ret;
455
456 return __v4l2_ctrl_modify_range(imx335->vblank_ctrl, mode->vblank_min,
457 mode->vblank_max, 1, mode->vblank);
458 }
459
460 /**
461 * imx335_update_exp_gain() - Set updated exposure and gain
462 * @imx335: pointer to imx335 device
463 * @exposure: updated exposure value
464 * @gain: updated analog gain value
465 *
466 * Return: 0 if successful, error code otherwise.
467 */
imx335_update_exp_gain(struct imx335 * imx335,u32 exposure,u32 gain)468 static int imx335_update_exp_gain(struct imx335 *imx335, u32 exposure, u32 gain)
469 {
470 u32 lpfr, shutter;
471 int ret_hold;
472 int ret = 0;
473
474 lpfr = imx335->vblank + imx335->cur_mode->height;
475 shutter = lpfr - exposure;
476
477 dev_dbg(imx335->dev, "Set exp %u, analog gain %u, shutter %u, lpfr %u\n",
478 exposure, gain, shutter, lpfr);
479
480 cci_write(imx335->cci, IMX335_REG_HOLD, 1, &ret);
481 cci_write(imx335->cci, IMX335_REG_VMAX, lpfr, &ret);
482 cci_write(imx335->cci, IMX335_REG_SHUTTER, shutter, &ret);
483 cci_write(imx335->cci, IMX335_REG_GAIN, gain, &ret);
484 /*
485 * Unconditionally attempt to release the hold, but track the
486 * error if the unhold itself fails.
487 */
488 ret_hold = cci_write(imx335->cci, IMX335_REG_HOLD, 0, NULL);
489 if (ret_hold)
490 ret = ret_hold;
491
492 return ret;
493 }
494
imx335_update_test_pattern(struct imx335 * imx335,u32 pattern_index)495 static int imx335_update_test_pattern(struct imx335 *imx335, u32 pattern_index)
496 {
497 int ret = 0;
498
499 if (pattern_index >= ARRAY_SIZE(imx335_tpg_val))
500 return -EINVAL;
501
502 if (pattern_index) {
503 const struct cci_reg_sequence tpg_enable_regs[] = {
504 { IMX335_REG_TPG_TESTCLKEN, 0x10 },
505 { IMX335_REG_TPG_DIG_CLP_MODE, 0x00 },
506 { IMX335_REG_TPG_EN_DUOUT, 0x01 },
507 { IMX335_REG_TPG_COLORWIDTH, 0x11 },
508 { IMX335_REG_BLKLEVEL, 0x00 },
509 { IMX335_REG_WRJ_OPEN, 0x00 },
510 };
511
512 cci_write(imx335->cci, IMX335_REG_TPG,
513 imx335_tpg_val[pattern_index], &ret);
514
515 cci_multi_reg_write(imx335->cci, tpg_enable_regs,
516 ARRAY_SIZE(tpg_enable_regs), &ret);
517 } else {
518 const struct cci_reg_sequence tpg_disable_regs[] = {
519 { IMX335_REG_TPG_TESTCLKEN, 0x00 },
520 { IMX335_REG_TPG_DIG_CLP_MODE, 0x01 },
521 { IMX335_REG_TPG_EN_DUOUT, 0x00 },
522 { IMX335_REG_TPG_COLORWIDTH, 0x10 },
523 { IMX335_REG_BLKLEVEL, 0x32 },
524 { IMX335_REG_WRJ_OPEN, 0x01 },
525 };
526
527 cci_multi_reg_write(imx335->cci, tpg_disable_regs,
528 ARRAY_SIZE(tpg_disable_regs), &ret);
529 }
530
531 return ret;
532 }
533
534 /**
535 * imx335_set_ctrl() - Set subdevice control
536 * @ctrl: pointer to v4l2_ctrl structure
537 *
538 * Supported controls:
539 * - V4L2_CID_VBLANK
540 * - cluster controls:
541 * - V4L2_CID_ANALOGUE_GAIN
542 * - V4L2_CID_EXPOSURE
543 *
544 * Return: 0 if successful, error code otherwise.
545 */
imx335_set_ctrl(struct v4l2_ctrl * ctrl)546 static int imx335_set_ctrl(struct v4l2_ctrl *ctrl)
547 {
548 struct imx335 *imx335 =
549 container_of(ctrl->handler, struct imx335, ctrl_handler);
550 u32 analog_gain;
551 u32 exposure;
552 int ret;
553
554 /* Propagate change of current control to all related controls */
555 if (ctrl->id == V4L2_CID_VBLANK) {
556 imx335->vblank = imx335->vblank_ctrl->val;
557
558 dev_dbg(imx335->dev, "Received vblank %u, new lpfr %u\n",
559 imx335->vblank,
560 imx335->vblank + imx335->cur_mode->height);
561
562 return __v4l2_ctrl_modify_range(imx335->exp_ctrl,
563 IMX335_EXPOSURE_MIN,
564 imx335->vblank +
565 imx335->cur_mode->height -
566 IMX335_EXPOSURE_OFFSET,
567 1, IMX335_EXPOSURE_DEFAULT);
568 }
569
570 /*
571 * Applying V4L2 control value only happens
572 * when power is up for streaming.
573 */
574 if (pm_runtime_get_if_in_use(imx335->dev) == 0)
575 return 0;
576
577 switch (ctrl->id) {
578 case V4L2_CID_EXPOSURE:
579 exposure = ctrl->val;
580 analog_gain = imx335->again_ctrl->val;
581
582 dev_dbg(imx335->dev, "Received exp %u, analog gain %u\n",
583 exposure, analog_gain);
584
585 ret = imx335_update_exp_gain(imx335, exposure, analog_gain);
586
587 break;
588 case V4L2_CID_TEST_PATTERN:
589 ret = imx335_update_test_pattern(imx335, ctrl->val);
590
591 break;
592 default:
593 dev_err(imx335->dev, "Invalid control %d\n", ctrl->id);
594 ret = -EINVAL;
595 }
596
597 pm_runtime_put(imx335->dev);
598
599 return ret;
600 }
601
602 /* V4l2 subdevice control ops*/
603 static const struct v4l2_ctrl_ops imx335_ctrl_ops = {
604 .s_ctrl = imx335_set_ctrl,
605 };
606
imx335_get_format_code(struct imx335 * imx335,u32 code)607 static int imx335_get_format_code(struct imx335 *imx335, u32 code)
608 {
609 unsigned int i;
610
611 for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) {
612 if (imx335_mbus_codes[i] == code)
613 return imx335_mbus_codes[i];
614 }
615
616 return imx335_mbus_codes[0];
617 }
618
619 /**
620 * imx335_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
621 * @sd: pointer to imx335 V4L2 sub-device structure
622 * @sd_state: V4L2 sub-device configuration
623 * @code: V4L2 sub-device code enumeration need to be filled
624 *
625 * Return: 0 if successful, error code otherwise.
626 */
imx335_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)627 static int imx335_enum_mbus_code(struct v4l2_subdev *sd,
628 struct v4l2_subdev_state *sd_state,
629 struct v4l2_subdev_mbus_code_enum *code)
630 {
631 if (code->index >= ARRAY_SIZE(imx335_mbus_codes))
632 return -EINVAL;
633
634 code->code = imx335_mbus_codes[code->index];
635
636 return 0;
637 }
638
639 /**
640 * imx335_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
641 * @sd: pointer to imx335 V4L2 sub-device structure
642 * @sd_state: V4L2 sub-device configuration
643 * @fsize: V4L2 sub-device size enumeration need to be filled
644 *
645 * Return: 0 if successful, error code otherwise.
646 */
imx335_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fsize)647 static int imx335_enum_frame_size(struct v4l2_subdev *sd,
648 struct v4l2_subdev_state *sd_state,
649 struct v4l2_subdev_frame_size_enum *fsize)
650 {
651 struct imx335 *imx335 = to_imx335(sd);
652 u32 code;
653
654 if (fsize->index > ARRAY_SIZE(imx335_mbus_codes))
655 return -EINVAL;
656
657 code = imx335_get_format_code(imx335, fsize->code);
658 if (fsize->code != code)
659 return -EINVAL;
660
661 fsize->min_width = supported_mode.width;
662 fsize->max_width = fsize->min_width;
663 fsize->min_height = supported_mode.height;
664 fsize->max_height = fsize->min_height;
665
666 return 0;
667 }
668
669 /**
670 * imx335_fill_pad_format() - Fill subdevice pad format
671 * from selected sensor mode
672 * @imx335: pointer to imx335 device
673 * @mode: pointer to imx335_mode sensor mode
674 * @fmt: V4L2 sub-device format need to be filled
675 */
imx335_fill_pad_format(struct imx335 * imx335,const struct imx335_mode * mode,struct v4l2_subdev_format * fmt)676 static void imx335_fill_pad_format(struct imx335 *imx335,
677 const struct imx335_mode *mode,
678 struct v4l2_subdev_format *fmt)
679 {
680 fmt->format.width = mode->width;
681 fmt->format.height = mode->height;
682 fmt->format.code = imx335->cur_mbus_code;
683 fmt->format.field = V4L2_FIELD_NONE;
684 fmt->format.colorspace = V4L2_COLORSPACE_RAW;
685 fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
686 fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
687 fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
688 }
689
690 /**
691 * imx335_get_pad_format() - Get subdevice pad format
692 * @sd: pointer to imx335 V4L2 sub-device structure
693 * @sd_state: V4L2 sub-device configuration
694 * @fmt: V4L2 sub-device format need to be set
695 *
696 * Return: 0 if successful, error code otherwise.
697 */
imx335_get_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)698 static int imx335_get_pad_format(struct v4l2_subdev *sd,
699 struct v4l2_subdev_state *sd_state,
700 struct v4l2_subdev_format *fmt)
701 {
702 struct imx335 *imx335 = to_imx335(sd);
703
704 mutex_lock(&imx335->mutex);
705
706 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
707 struct v4l2_mbus_framefmt *framefmt;
708
709 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
710 fmt->format = *framefmt;
711 } else {
712 imx335_fill_pad_format(imx335, imx335->cur_mode, fmt);
713 }
714
715 mutex_unlock(&imx335->mutex);
716
717 return 0;
718 }
719
720 /**
721 * imx335_set_pad_format() - Set subdevice pad format
722 * @sd: pointer to imx335 V4L2 sub-device structure
723 * @sd_state: V4L2 sub-device configuration
724 * @fmt: V4L2 sub-device format need to be set
725 *
726 * Return: 0 if successful, error code otherwise.
727 */
imx335_set_pad_format(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)728 static int imx335_set_pad_format(struct v4l2_subdev *sd,
729 struct v4l2_subdev_state *sd_state,
730 struct v4l2_subdev_format *fmt)
731 {
732 struct imx335 *imx335 = to_imx335(sd);
733 const struct imx335_mode *mode;
734 int i, ret = 0;
735
736 mutex_lock(&imx335->mutex);
737
738 mode = &supported_mode;
739 for (i = 0; i < ARRAY_SIZE(imx335_mbus_codes); i++) {
740 if (imx335_mbus_codes[i] == fmt->format.code)
741 imx335->cur_mbus_code = imx335_mbus_codes[i];
742 }
743
744 imx335_fill_pad_format(imx335, mode, fmt);
745
746 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
747 struct v4l2_mbus_framefmt *framefmt;
748
749 framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
750 *framefmt = fmt->format;
751 } else {
752 ret = imx335_update_controls(imx335, mode);
753 if (!ret)
754 imx335->cur_mode = mode;
755 }
756
757 mutex_unlock(&imx335->mutex);
758
759 return ret;
760 }
761
762 /**
763 * imx335_init_state() - Initialize sub-device state
764 * @sd: pointer to imx335 V4L2 sub-device structure
765 * @sd_state: V4L2 sub-device configuration
766 *
767 * Return: 0 if successful, error code otherwise.
768 */
imx335_init_state(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state)769 static int imx335_init_state(struct v4l2_subdev *sd,
770 struct v4l2_subdev_state *sd_state)
771 {
772 struct imx335 *imx335 = to_imx335(sd);
773 struct v4l2_subdev_format fmt = { 0 };
774
775 fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
776 imx335_fill_pad_format(imx335, &supported_mode, &fmt);
777
778 mutex_lock(&imx335->mutex);
779 __v4l2_ctrl_modify_range(imx335->link_freq_ctrl, 0,
780 __fls(imx335->link_freq_bitmap),
781 ~(imx335->link_freq_bitmap),
782 __ffs(imx335->link_freq_bitmap));
783 mutex_unlock(&imx335->mutex);
784
785 return imx335_set_pad_format(sd, sd_state, &fmt);
786 }
787
788 /**
789 * imx335_get_selection() - Selection API
790 * @sd: pointer to imx335 V4L2 sub-device structure
791 * @sd_state: V4L2 sub-device configuration
792 * @sel: V4L2 selection info
793 *
794 * Return: 0 if successful, error code otherwise.
795 */
imx335_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_selection * sel)796 static int imx335_get_selection(struct v4l2_subdev *sd,
797 struct v4l2_subdev_state *sd_state,
798 struct v4l2_subdev_selection *sel)
799 {
800 switch (sel->target) {
801 case V4L2_SEL_TGT_NATIVE_SIZE:
802 sel->r.top = 0;
803 sel->r.left = 0;
804 sel->r.width = IMX335_NATIVE_WIDTH;
805 sel->r.height = IMX335_NATIVE_HEIGHT;
806
807 return 0;
808
809 case V4L2_SEL_TGT_CROP:
810 case V4L2_SEL_TGT_CROP_DEFAULT:
811 case V4L2_SEL_TGT_CROP_BOUNDS:
812 sel->r.top = IMX335_PIXEL_ARRAY_TOP;
813 sel->r.left = IMX335_PIXEL_ARRAY_LEFT;
814 sel->r.width = IMX335_PIXEL_ARRAY_WIDTH;
815 sel->r.height = IMX335_PIXEL_ARRAY_HEIGHT;
816
817 return 0;
818 }
819
820 return -EINVAL;
821 }
822
imx335_set_framefmt(struct imx335 * imx335)823 static int imx335_set_framefmt(struct imx335 *imx335)
824 {
825 switch (imx335->cur_mbus_code) {
826 case MEDIA_BUS_FMT_SRGGB10_1X10:
827 return cci_multi_reg_write(imx335->cci, raw10_framefmt_regs,
828 ARRAY_SIZE(raw10_framefmt_regs),
829 NULL);
830
831 case MEDIA_BUS_FMT_SRGGB12_1X12:
832 return cci_multi_reg_write(imx335->cci, raw12_framefmt_regs,
833 ARRAY_SIZE(raw12_framefmt_regs),
834 NULL);
835 }
836
837 return -EINVAL;
838 }
839
840 /**
841 * imx335_start_streaming() - Start sensor stream
842 * @imx335: pointer to imx335 device
843 *
844 * Return: 0 if successful, error code otherwise.
845 */
imx335_start_streaming(struct imx335 * imx335)846 static int imx335_start_streaming(struct imx335 *imx335)
847 {
848 const struct imx335_reg_list *reg_list;
849 int ret;
850
851 /* Setup PLL */
852 reg_list = &link_freq_reglist[__ffs(imx335->link_freq_bitmap)];
853 ret = cci_multi_reg_write(imx335->cci, reg_list->regs,
854 reg_list->num_of_regs, NULL);
855 if (ret) {
856 dev_err(imx335->dev, "%s failed to set plls\n", __func__);
857 return ret;
858 }
859
860 /* Write sensor mode registers */
861 reg_list = &imx335->cur_mode->reg_list;
862 ret = cci_multi_reg_write(imx335->cci, reg_list->regs,
863 reg_list->num_of_regs, NULL);
864 if (ret) {
865 dev_err(imx335->dev, "fail to write initial registers\n");
866 return ret;
867 }
868
869 ret = imx335_set_framefmt(imx335);
870 if (ret) {
871 dev_err(imx335->dev, "%s failed to set frame format: %d\n",
872 __func__, ret);
873 return ret;
874 }
875
876 /* Configure lanes */
877 ret = cci_write(imx335->cci, IMX335_REG_LANEMODE,
878 imx335->lane_mode, NULL);
879 if (ret)
880 return ret;
881
882 /* Setup handler will write actual exposure and gain */
883 ret = __v4l2_ctrl_handler_setup(imx335->sd.ctrl_handler);
884 if (ret) {
885 dev_err(imx335->dev, "fail to setup handler\n");
886 return ret;
887 }
888
889 /* Start streaming */
890 ret = cci_write(imx335->cci, IMX335_REG_MODE_SELECT,
891 IMX335_MODE_STREAMING, NULL);
892 if (ret) {
893 dev_err(imx335->dev, "fail to start streaming\n");
894 return ret;
895 }
896
897 /* Initial regulator stabilization period */
898 usleep_range(18000, 20000);
899
900 return 0;
901 }
902
903 /**
904 * imx335_stop_streaming() - Stop sensor stream
905 * @imx335: pointer to imx335 device
906 *
907 * Return: 0 if successful, error code otherwise.
908 */
imx335_stop_streaming(struct imx335 * imx335)909 static int imx335_stop_streaming(struct imx335 *imx335)
910 {
911 return cci_write(imx335->cci, IMX335_REG_MODE_SELECT,
912 IMX335_MODE_STANDBY, NULL);
913 }
914
915 /**
916 * imx335_set_stream() - Enable sensor streaming
917 * @sd: pointer to imx335 subdevice
918 * @enable: set to enable sensor streaming
919 *
920 * Return: 0 if successful, error code otherwise.
921 */
imx335_set_stream(struct v4l2_subdev * sd,int enable)922 static int imx335_set_stream(struct v4l2_subdev *sd, int enable)
923 {
924 struct imx335 *imx335 = to_imx335(sd);
925 int ret;
926
927 mutex_lock(&imx335->mutex);
928
929 if (enable) {
930 ret = pm_runtime_resume_and_get(imx335->dev);
931 if (ret)
932 goto error_unlock;
933
934 ret = imx335_start_streaming(imx335);
935 if (ret)
936 goto error_power_off;
937 } else {
938 imx335_stop_streaming(imx335);
939 pm_runtime_put(imx335->dev);
940 }
941
942 mutex_unlock(&imx335->mutex);
943
944 return 0;
945
946 error_power_off:
947 pm_runtime_put(imx335->dev);
948 error_unlock:
949 mutex_unlock(&imx335->mutex);
950
951 return ret;
952 }
953
954 /**
955 * imx335_detect() - Detect imx335 sensor
956 * @imx335: pointer to imx335 device
957 *
958 * Return: 0 if successful, -EIO if sensor id does not match
959 */
imx335_detect(struct imx335 * imx335)960 static int imx335_detect(struct imx335 *imx335)
961 {
962 int ret;
963 u64 val;
964
965 ret = cci_read(imx335->cci, IMX335_REG_ID, &val, NULL);
966 if (ret)
967 return ret;
968
969 if (val != IMX335_ID) {
970 dev_err(imx335->dev, "chip id mismatch: %x!=%llx\n",
971 IMX335_ID, val);
972 return -ENXIO;
973 }
974
975 return 0;
976 }
977
978 /**
979 * imx335_parse_hw_config() - Parse HW configuration and check if supported
980 * @imx335: pointer to imx335 device
981 *
982 * Return: 0 if successful, error code otherwise.
983 */
imx335_parse_hw_config(struct imx335 * imx335)984 static int imx335_parse_hw_config(struct imx335 *imx335)
985 {
986 struct fwnode_handle *fwnode = dev_fwnode(imx335->dev);
987 struct v4l2_fwnode_endpoint bus_cfg = {
988 .bus_type = V4L2_MBUS_CSI2_DPHY
989 };
990 struct fwnode_handle *ep;
991 unsigned long rate;
992 unsigned int i;
993 int ret;
994
995 if (!fwnode)
996 return -ENXIO;
997
998 /* Request optional reset pin */
999 imx335->reset_gpio = devm_gpiod_get_optional(imx335->dev, "reset",
1000 GPIOD_OUT_HIGH);
1001 if (IS_ERR(imx335->reset_gpio)) {
1002 dev_err(imx335->dev, "failed to get reset gpio %ld\n",
1003 PTR_ERR(imx335->reset_gpio));
1004 return PTR_ERR(imx335->reset_gpio);
1005 }
1006
1007 for (i = 0; i < ARRAY_SIZE(imx335_supply_name); i++)
1008 imx335->supplies[i].supply = imx335_supply_name[i];
1009
1010 ret = devm_regulator_bulk_get(imx335->dev,
1011 ARRAY_SIZE(imx335_supply_name),
1012 imx335->supplies);
1013 if (ret) {
1014 dev_err(imx335->dev, "Failed to get regulators\n");
1015 return ret;
1016 }
1017
1018 /* Get sensor input clock */
1019 imx335->inclk = devm_clk_get(imx335->dev, NULL);
1020 if (IS_ERR(imx335->inclk)) {
1021 dev_err(imx335->dev, "could not get inclk\n");
1022 return PTR_ERR(imx335->inclk);
1023 }
1024
1025 rate = clk_get_rate(imx335->inclk);
1026 if (rate != IMX335_INCLK_RATE) {
1027 dev_err(imx335->dev, "inclk frequency mismatch\n");
1028 return -EINVAL;
1029 }
1030
1031 ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
1032 if (!ep) {
1033 dev_err(imx335->dev, "Failed to get next endpoint\n");
1034 return -ENXIO;
1035 }
1036
1037 ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
1038 fwnode_handle_put(ep);
1039 if (ret)
1040 return ret;
1041
1042 switch (bus_cfg.bus.mipi_csi2.num_data_lanes) {
1043 case 2:
1044 imx335->lane_mode = IMX335_2LANE;
1045 break;
1046 case 4:
1047 imx335->lane_mode = IMX335_4LANE;
1048 break;
1049 default:
1050 dev_err(imx335->dev,
1051 "number of CSI2 data lanes %d is not supported\n",
1052 bus_cfg.bus.mipi_csi2.num_data_lanes);
1053 ret = -EINVAL;
1054 goto done_endpoint_free;
1055 }
1056
1057 ret = v4l2_link_freq_to_bitmap(imx335->dev, bus_cfg.link_frequencies,
1058 bus_cfg.nr_of_link_frequencies,
1059 link_freq, ARRAY_SIZE(link_freq),
1060 &imx335->link_freq_bitmap);
1061
1062 done_endpoint_free:
1063 v4l2_fwnode_endpoint_free(&bus_cfg);
1064
1065 return ret;
1066 }
1067
1068 /* V4l2 subdevice ops */
1069 static const struct v4l2_subdev_video_ops imx335_video_ops = {
1070 .s_stream = imx335_set_stream,
1071 };
1072
1073 static const struct v4l2_subdev_pad_ops imx335_pad_ops = {
1074 .enum_mbus_code = imx335_enum_mbus_code,
1075 .enum_frame_size = imx335_enum_frame_size,
1076 .get_selection = imx335_get_selection,
1077 .set_selection = imx335_get_selection,
1078 .get_fmt = imx335_get_pad_format,
1079 .set_fmt = imx335_set_pad_format,
1080 };
1081
1082 static const struct v4l2_subdev_ops imx335_subdev_ops = {
1083 .video = &imx335_video_ops,
1084 .pad = &imx335_pad_ops,
1085 };
1086
1087 static const struct v4l2_subdev_internal_ops imx335_internal_ops = {
1088 .init_state = imx335_init_state,
1089 };
1090
1091 /**
1092 * imx335_power_on() - Sensor power on sequence
1093 * @dev: pointer to i2c device
1094 *
1095 * Return: 0 if successful, error code otherwise.
1096 */
imx335_power_on(struct device * dev)1097 static int imx335_power_on(struct device *dev)
1098 {
1099 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1100 struct imx335 *imx335 = to_imx335(sd);
1101 int ret;
1102
1103 ret = regulator_bulk_enable(ARRAY_SIZE(imx335_supply_name),
1104 imx335->supplies);
1105 if (ret) {
1106 dev_err(dev, "%s: failed to enable regulators\n",
1107 __func__);
1108 return ret;
1109 }
1110
1111 usleep_range(500, 550); /* Tlow */
1112
1113 gpiod_set_value_cansleep(imx335->reset_gpio, 0);
1114
1115 ret = clk_prepare_enable(imx335->inclk);
1116 if (ret) {
1117 dev_err(imx335->dev, "fail to enable inclk\n");
1118 goto error_reset;
1119 }
1120
1121 usleep_range(20, 22); /* T4 */
1122
1123 return 0;
1124
1125 error_reset:
1126 gpiod_set_value_cansleep(imx335->reset_gpio, 1);
1127 regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies);
1128
1129 return ret;
1130 }
1131
1132 /**
1133 * imx335_power_off() - Sensor power off sequence
1134 * @dev: pointer to i2c device
1135 *
1136 * Return: 0 if successful, error code otherwise.
1137 */
imx335_power_off(struct device * dev)1138 static int imx335_power_off(struct device *dev)
1139 {
1140 struct v4l2_subdev *sd = dev_get_drvdata(dev);
1141 struct imx335 *imx335 = to_imx335(sd);
1142
1143 gpiod_set_value_cansleep(imx335->reset_gpio, 1);
1144 clk_disable_unprepare(imx335->inclk);
1145 regulator_bulk_disable(ARRAY_SIZE(imx335_supply_name), imx335->supplies);
1146
1147 return 0;
1148 }
1149
1150 /**
1151 * imx335_init_controls() - Initialize sensor subdevice controls
1152 * @imx335: pointer to imx335 device
1153 *
1154 * Return: 0 if successful, error code otherwise.
1155 */
imx335_init_controls(struct imx335 * imx335)1156 static int imx335_init_controls(struct imx335 *imx335)
1157 {
1158 struct v4l2_ctrl_handler *ctrl_hdlr = &imx335->ctrl_handler;
1159 const struct imx335_mode *mode = imx335->cur_mode;
1160 struct v4l2_fwnode_device_properties props;
1161 u32 lpfr;
1162 int ret;
1163
1164 ret = v4l2_fwnode_device_parse(imx335->dev, &props);
1165 if (ret)
1166 return ret;
1167
1168 /* v4l2_fwnode_device_properties can add two more controls */
1169 ret = v4l2_ctrl_handler_init(ctrl_hdlr, 9);
1170 if (ret)
1171 return ret;
1172
1173 /* Serialize controls with sensor device */
1174 ctrl_hdlr->lock = &imx335->mutex;
1175
1176 /* Initialize exposure and gain */
1177 lpfr = mode->vblank + mode->height;
1178 imx335->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1179 &imx335_ctrl_ops,
1180 V4L2_CID_EXPOSURE,
1181 IMX335_EXPOSURE_MIN,
1182 lpfr - IMX335_EXPOSURE_OFFSET,
1183 IMX335_EXPOSURE_STEP,
1184 IMX335_EXPOSURE_DEFAULT);
1185
1186 /*
1187 * The sensor has an analog gain and a digital gain, both controlled
1188 * through a single gain value, expressed in 0.3dB increments. Values
1189 * from 0.0dB (0) to 30.0dB (100) apply analog gain only, higher values
1190 * up to 72.0dB (240) add further digital gain. Limit the range to
1191 * analog gain only, support for digital gain can be added separately
1192 * if needed.
1193 */
1194 imx335->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1195 &imx335_ctrl_ops,
1196 V4L2_CID_ANALOGUE_GAIN,
1197 IMX335_AGAIN_MIN,
1198 IMX335_AGAIN_MAX,
1199 IMX335_AGAIN_STEP,
1200 IMX335_AGAIN_DEFAULT);
1201
1202 v4l2_ctrl_cluster(2, &imx335->exp_ctrl);
1203
1204 imx335->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1205 &imx335_ctrl_ops,
1206 V4L2_CID_VBLANK,
1207 mode->vblank_min,
1208 mode->vblank_max,
1209 1, mode->vblank);
1210
1211 v4l2_ctrl_new_std_menu_items(ctrl_hdlr,
1212 &imx335_ctrl_ops,
1213 V4L2_CID_TEST_PATTERN,
1214 ARRAY_SIZE(imx335_tpg_menu) - 1,
1215 0, 0, imx335_tpg_menu);
1216
1217 /* Read only controls */
1218 imx335->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1219 &imx335_ctrl_ops,
1220 V4L2_CID_PIXEL_RATE,
1221 mode->pclk, mode->pclk,
1222 1, mode->pclk);
1223
1224 imx335->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
1225 &imx335_ctrl_ops,
1226 V4L2_CID_LINK_FREQ,
1227 __fls(imx335->link_freq_bitmap),
1228 __ffs(imx335->link_freq_bitmap),
1229 link_freq);
1230 if (imx335->link_freq_ctrl)
1231 imx335->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1232
1233 imx335->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
1234 &imx335_ctrl_ops,
1235 V4L2_CID_HBLANK,
1236 mode->hblank,
1237 mode->hblank,
1238 1, mode->hblank);
1239 if (imx335->hblank_ctrl)
1240 imx335->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1241
1242 v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx335_ctrl_ops, &props);
1243
1244 if (ctrl_hdlr->error) {
1245 dev_err(imx335->dev, "control init failed: %d\n",
1246 ctrl_hdlr->error);
1247 v4l2_ctrl_handler_free(ctrl_hdlr);
1248 return ctrl_hdlr->error;
1249 }
1250
1251 imx335->sd.ctrl_handler = ctrl_hdlr;
1252
1253 return 0;
1254 }
1255
1256 /**
1257 * imx335_probe() - I2C client device binding
1258 * @client: pointer to i2c client device
1259 *
1260 * Return: 0 if successful, error code otherwise.
1261 */
imx335_probe(struct i2c_client * client)1262 static int imx335_probe(struct i2c_client *client)
1263 {
1264 struct imx335 *imx335;
1265 int ret;
1266
1267 imx335 = devm_kzalloc(&client->dev, sizeof(*imx335), GFP_KERNEL);
1268 if (!imx335)
1269 return -ENOMEM;
1270
1271 imx335->dev = &client->dev;
1272 imx335->cci = devm_cci_regmap_init_i2c(client, 16);
1273 if (IS_ERR(imx335->cci)) {
1274 dev_err(imx335->dev, "Unable to initialize I2C\n");
1275 return -ENODEV;
1276 }
1277
1278 /* Initialize subdev */
1279 v4l2_i2c_subdev_init(&imx335->sd, client, &imx335_subdev_ops);
1280 imx335->sd.internal_ops = &imx335_internal_ops;
1281
1282 ret = imx335_parse_hw_config(imx335);
1283 if (ret) {
1284 dev_err(imx335->dev, "HW configuration is not supported\n");
1285 return ret;
1286 }
1287
1288 mutex_init(&imx335->mutex);
1289
1290 ret = imx335_power_on(imx335->dev);
1291 if (ret) {
1292 dev_err(imx335->dev, "failed to power-on the sensor\n");
1293 goto error_mutex_destroy;
1294 }
1295
1296 /* Check module identity */
1297 ret = imx335_detect(imx335);
1298 if (ret) {
1299 dev_err(imx335->dev, "failed to find sensor: %d\n", ret);
1300 goto error_power_off;
1301 }
1302
1303 /* Set default mode to max resolution */
1304 imx335->cur_mode = &supported_mode;
1305 imx335->cur_mbus_code = imx335_mbus_codes[0];
1306 imx335->vblank = imx335->cur_mode->vblank;
1307
1308 ret = imx335_init_controls(imx335);
1309 if (ret) {
1310 dev_err(imx335->dev, "failed to init controls: %d\n", ret);
1311 goto error_power_off;
1312 }
1313
1314 /* Initialize subdev */
1315 imx335->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1316 imx335->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1317
1318 /* Initialize source pad */
1319 imx335->pad.flags = MEDIA_PAD_FL_SOURCE;
1320 ret = media_entity_pads_init(&imx335->sd.entity, 1, &imx335->pad);
1321 if (ret) {
1322 dev_err(imx335->dev, "failed to init entity pads: %d\n", ret);
1323 goto error_handler_free;
1324 }
1325
1326 ret = v4l2_async_register_subdev_sensor(&imx335->sd);
1327 if (ret < 0) {
1328 dev_err(imx335->dev,
1329 "failed to register async subdev: %d\n", ret);
1330 goto error_media_entity;
1331 }
1332
1333 pm_runtime_set_active(imx335->dev);
1334 pm_runtime_enable(imx335->dev);
1335 pm_runtime_idle(imx335->dev);
1336
1337 return 0;
1338
1339 error_media_entity:
1340 media_entity_cleanup(&imx335->sd.entity);
1341 error_handler_free:
1342 v4l2_ctrl_handler_free(imx335->sd.ctrl_handler);
1343 error_power_off:
1344 imx335_power_off(imx335->dev);
1345 error_mutex_destroy:
1346 mutex_destroy(&imx335->mutex);
1347
1348 return ret;
1349 }
1350
1351 /**
1352 * imx335_remove() - I2C client device unbinding
1353 * @client: pointer to I2C client device
1354 *
1355 * Return: 0 if successful, error code otherwise.
1356 */
imx335_remove(struct i2c_client * client)1357 static void imx335_remove(struct i2c_client *client)
1358 {
1359 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1360 struct imx335 *imx335 = to_imx335(sd);
1361
1362 v4l2_async_unregister_subdev(sd);
1363 media_entity_cleanup(&sd->entity);
1364 v4l2_ctrl_handler_free(sd->ctrl_handler);
1365
1366 pm_runtime_disable(&client->dev);
1367 if (!pm_runtime_status_suspended(&client->dev))
1368 imx335_power_off(&client->dev);
1369 pm_runtime_set_suspended(&client->dev);
1370
1371 mutex_destroy(&imx335->mutex);
1372 }
1373
1374 static const struct dev_pm_ops imx335_pm_ops = {
1375 SET_RUNTIME_PM_OPS(imx335_power_off, imx335_power_on, NULL)
1376 };
1377
1378 static const struct of_device_id imx335_of_match[] = {
1379 { .compatible = "sony,imx335" },
1380 { }
1381 };
1382
1383 MODULE_DEVICE_TABLE(of, imx335_of_match);
1384
1385 static struct i2c_driver imx335_driver = {
1386 .probe = imx335_probe,
1387 .remove = imx335_remove,
1388 .driver = {
1389 .name = "imx335",
1390 .pm = &imx335_pm_ops,
1391 .of_match_table = imx335_of_match,
1392 },
1393 };
1394
1395 module_i2c_driver(imx335_driver);
1396
1397 MODULE_DESCRIPTION("Sony imx335 sensor driver");
1398 MODULE_LICENSE("GPL");
1399