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[mirror_ubuntu-hirsute-kernel.git] / drivers / media / i2c / s5k6aa.c
1 /*
2 * Driver for Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor
3 * with embedded SoC ISP.
4 *
5 * Copyright (C) 2011, Samsung Electronics Co., Ltd.
6 * Sylwester Nawrocki <s.nawrocki@samsung.com>
7 *
8 * Based on a driver authored by Dongsoo Nathaniel Kim.
9 * Copyright (C) 2009, Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 */
16
17 #include <linux/clk.h>
18 #include <linux/delay.h>
19 #include <linux/gpio.h>
20 #include <linux/i2c.h>
21 #include <linux/media.h>
22 #include <linux/module.h>
23 #include <linux/regulator/consumer.h>
24 #include <linux/slab.h>
25
26 #include <media/media-entity.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-subdev.h>
30 #include <media/v4l2-mediabus.h>
31 #include <media/i2c/s5k6aa.h>
32
33 static int debug;
34 module_param(debug, int, 0644);
35
36 #define DRIVER_NAME "S5K6AA"
37
38 /* The token to indicate array termination */
39 #define S5K6AA_TERM 0xffff
40 #define S5K6AA_OUT_WIDTH_DEF 640
41 #define S5K6AA_OUT_HEIGHT_DEF 480
42 #define S5K6AA_WIN_WIDTH_MAX 1280
43 #define S5K6AA_WIN_HEIGHT_MAX 1024
44 #define S5K6AA_WIN_WIDTH_MIN 8
45 #define S5K6AA_WIN_HEIGHT_MIN 8
46
47 /*
48 * H/W register Interface (0xD0000000 - 0xD0000FFF)
49 */
50 #define AHB_MSB_ADDR_PTR 0xfcfc
51 #define GEN_REG_OFFSH 0xd000
52 #define REG_CMDWR_ADDRH 0x0028
53 #define REG_CMDWR_ADDRL 0x002a
54 #define REG_CMDRD_ADDRH 0x002c
55 #define REG_CMDRD_ADDRL 0x002e
56 #define REG_CMDBUF0_ADDR 0x0f12
57 #define REG_CMDBUF1_ADDR 0x0f10
58
59 /*
60 * Host S/W Register interface (0x70000000 - 0x70002000)
61 * The value of the two most significant address bytes is 0x7000,
62 * (HOST_SWIF_OFFS_H). The register addresses below specify 2 LSBs.
63 */
64 #define HOST_SWIF_OFFSH 0x7000
65
66 /* Initialization parameters */
67 /* Master clock frequency in KHz */
68 #define REG_I_INCLK_FREQ_L 0x01b8
69 #define REG_I_INCLK_FREQ_H 0x01ba
70 #define MIN_MCLK_FREQ_KHZ 6000U
71 #define MAX_MCLK_FREQ_KHZ 27000U
72 #define REG_I_USE_NPVI_CLOCKS 0x01c6
73 #define REG_I_USE_NMIPI_CLOCKS 0x01c8
74
75 /* Clock configurations, n = 0..2. REG_I_* frequency unit is 4 kHz. */
76 #define REG_I_OPCLK_4KHZ(n) ((n) * 6 + 0x01cc)
77 #define REG_I_MIN_OUTRATE_4KHZ(n) ((n) * 6 + 0x01ce)
78 #define REG_I_MAX_OUTRATE_4KHZ(n) ((n) * 6 + 0x01d0)
79 #define SYS_PLL_OUT_FREQ (48000000 / 4000)
80 #define PCLK_FREQ_MIN (24000000 / 4000)
81 #define PCLK_FREQ_MAX (48000000 / 4000)
82 #define REG_I_INIT_PARAMS_UPDATED 0x01e0
83 #define REG_I_ERROR_INFO 0x01e2
84
85 /* General purpose parameters */
86 #define REG_USER_BRIGHTNESS 0x01e4
87 #define REG_USER_CONTRAST 0x01e6
88 #define REG_USER_SATURATION 0x01e8
89 #define REG_USER_SHARPBLUR 0x01ea
90
91 #define REG_G_SPEC_EFFECTS 0x01ee
92 #define REG_G_ENABLE_PREV 0x01f0
93 #define REG_G_ENABLE_PREV_CHG 0x01f2
94 #define REG_G_NEW_CFG_SYNC 0x01f8
95 #define REG_G_PREVZOOM_IN_WIDTH 0x020a
96 #define REG_G_PREVZOOM_IN_HEIGHT 0x020c
97 #define REG_G_PREVZOOM_IN_XOFFS 0x020e
98 #define REG_G_PREVZOOM_IN_YOFFS 0x0210
99 #define REG_G_INPUTS_CHANGE_REQ 0x021a
100 #define REG_G_ACTIVE_PREV_CFG 0x021c
101 #define REG_G_PREV_CFG_CHG 0x021e
102 #define REG_G_PREV_OPEN_AFTER_CH 0x0220
103 #define REG_G_PREV_CFG_ERROR 0x0222
104
105 /* Preview control section. n = 0...4. */
106 #define PREG(n, x) ((n) * 0x26 + x)
107 #define REG_P_OUT_WIDTH(n) PREG(n, 0x0242)
108 #define REG_P_OUT_HEIGHT(n) PREG(n, 0x0244)
109 #define REG_P_FMT(n) PREG(n, 0x0246)
110 #define REG_P_MAX_OUT_RATE(n) PREG(n, 0x0248)
111 #define REG_P_MIN_OUT_RATE(n) PREG(n, 0x024a)
112 #define REG_P_PVI_MASK(n) PREG(n, 0x024c)
113 #define REG_P_CLK_INDEX(n) PREG(n, 0x024e)
114 #define REG_P_FR_RATE_TYPE(n) PREG(n, 0x0250)
115 #define FR_RATE_DYNAMIC 0
116 #define FR_RATE_FIXED 1
117 #define FR_RATE_FIXED_ACCURATE 2
118 #define REG_P_FR_RATE_Q_TYPE(n) PREG(n, 0x0252)
119 #define FR_RATE_Q_BEST_FRRATE 1 /* Binning enabled */
120 #define FR_RATE_Q_BEST_QUALITY 2 /* Binning disabled */
121 /* Frame period in 0.1 ms units */
122 #define REG_P_MAX_FR_TIME(n) PREG(n, 0x0254)
123 #define REG_P_MIN_FR_TIME(n) PREG(n, 0x0256)
124 /* Conversion to REG_P_[MAX/MIN]_FR_TIME value; __t: time in us */
125 #define US_TO_FR_TIME(__t) ((__t) / 100)
126 #define S5K6AA_MIN_FR_TIME 33300 /* us */
127 #define S5K6AA_MAX_FR_TIME 650000 /* us */
128 #define S5K6AA_MAX_HIGHRES_FR_TIME 666 /* x100 us */
129 /* The below 5 registers are for "device correction" values */
130 #define REG_P_COLORTEMP(n) PREG(n, 0x025e)
131 #define REG_P_PREV_MIRROR(n) PREG(n, 0x0262)
132
133 /* Extended image property controls */
134 /* Exposure time in 10 us units */
135 #define REG_SF_USR_EXPOSURE_L 0x03c6
136 #define REG_SF_USR_EXPOSURE_H 0x03c8
137 #define REG_SF_USR_EXPOSURE_CHG 0x03ca
138 #define REG_SF_USR_TOT_GAIN 0x03cc
139 #define REG_SF_USR_TOT_GAIN_CHG 0x03ce
140 #define REG_SF_RGAIN 0x03d0
141 #define REG_SF_RGAIN_CHG 0x03d2
142 #define REG_SF_GGAIN 0x03d4
143 #define REG_SF_GGAIN_CHG 0x03d6
144 #define REG_SF_BGAIN 0x03d8
145 #define REG_SF_BGAIN_CHG 0x03da
146 #define REG_SF_FLICKER_QUANT 0x03dc
147 #define REG_SF_FLICKER_QUANT_CHG 0x03de
148
149 /* Output interface (parallel/MIPI) setup */
150 #define REG_OIF_EN_MIPI_LANES 0x03fa
151 #define REG_OIF_EN_PACKETS 0x03fc
152 #define REG_OIF_CFG_CHG 0x03fe
153
154 /* Auto-algorithms enable mask */
155 #define REG_DBG_AUTOALG_EN 0x0400
156 #define AALG_ALL_EN_MASK (1 << 0)
157 #define AALG_AE_EN_MASK (1 << 1)
158 #define AALG_DIVLEI_EN_MASK (1 << 2)
159 #define AALG_WB_EN_MASK (1 << 3)
160 #define AALG_FLICKER_EN_MASK (1 << 5)
161 #define AALG_FIT_EN_MASK (1 << 6)
162 #define AALG_WRHW_EN_MASK (1 << 7)
163
164 /* Firmware revision information */
165 #define REG_FW_APIVER 0x012e
166 #define S5K6AAFX_FW_APIVER 0x0001
167 #define REG_FW_REVISION 0x0130
168
169 /* For now we use only one user configuration register set */
170 #define S5K6AA_MAX_PRESETS 1
171
172 static const char * const s5k6aa_supply_names[] = {
173 "vdd_core", /* Digital core supply 1.5V (1.4V to 1.6V) */
174 "vdda", /* Analog power supply 2.8V (2.6V to 3.0V) */
175 "vdd_reg", /* Regulator input power 1.8V (1.7V to 1.9V)
176 or 2.8V (2.6V to 3.0) */
177 "vddio", /* I/O supply 1.8V (1.65V to 1.95V)
178 or 2.8V (2.5V to 3.1V) */
179 };
180 #define S5K6AA_NUM_SUPPLIES ARRAY_SIZE(s5k6aa_supply_names)
181
182 enum s5k6aa_gpio_id {
183 STBY,
184 RST,
185 GPIO_NUM,
186 };
187
188 struct s5k6aa_regval {
189 u16 addr;
190 u16 val;
191 };
192
193 struct s5k6aa_pixfmt {
194 u32 code;
195 u32 colorspace;
196 /* REG_P_FMT(x) register value */
197 u16 reg_p_fmt;
198 };
199
200 struct s5k6aa_preset {
201 /* output pixel format and resolution */
202 struct v4l2_mbus_framefmt mbus_fmt;
203 u8 clk_id;
204 u8 index;
205 };
206
207 struct s5k6aa_ctrls {
208 struct v4l2_ctrl_handler handler;
209 /* Auto / manual white balance cluster */
210 struct v4l2_ctrl *awb;
211 struct v4l2_ctrl *gain_red;
212 struct v4l2_ctrl *gain_blue;
213 struct v4l2_ctrl *gain_green;
214 /* Mirror cluster */
215 struct v4l2_ctrl *hflip;
216 struct v4l2_ctrl *vflip;
217 /* Auto exposure / manual exposure and gain cluster */
218 struct v4l2_ctrl *auto_exp;
219 struct v4l2_ctrl *exposure;
220 struct v4l2_ctrl *gain;
221 };
222
223 struct s5k6aa_interval {
224 u16 reg_fr_time;
225 struct v4l2_fract interval;
226 /* Maximum rectangle for the interval */
227 struct v4l2_frmsize_discrete size;
228 };
229
230 struct s5k6aa {
231 struct v4l2_subdev sd;
232 struct media_pad pad;
233
234 enum v4l2_mbus_type bus_type;
235 u8 mipi_lanes;
236
237 int (*s_power)(int enable);
238 struct regulator_bulk_data supplies[S5K6AA_NUM_SUPPLIES];
239 struct s5k6aa_gpio gpio[GPIO_NUM];
240
241 /* external master clock frequency */
242 unsigned long mclk_frequency;
243 /* ISP internal master clock frequency */
244 u16 clk_fop;
245 /* output pixel clock frequency range */
246 u16 pclk_fmin;
247 u16 pclk_fmax;
248
249 unsigned int inv_hflip:1;
250 unsigned int inv_vflip:1;
251
252 /* protects the struct members below */
253 struct mutex lock;
254
255 /* sensor matrix scan window */
256 struct v4l2_rect ccd_rect;
257
258 struct s5k6aa_ctrls ctrls;
259 struct s5k6aa_preset presets[S5K6AA_MAX_PRESETS];
260 struct s5k6aa_preset *preset;
261 const struct s5k6aa_interval *fiv;
262
263 unsigned int streaming:1;
264 unsigned int apply_cfg:1;
265 unsigned int apply_crop:1;
266 unsigned int power;
267 };
268
269 static struct s5k6aa_regval s5k6aa_analog_config[] = {
270 /* Analog settings */
271 { 0x112a, 0x0000 }, { 0x1132, 0x0000 },
272 { 0x113e, 0x0000 }, { 0x115c, 0x0000 },
273 { 0x1164, 0x0000 }, { 0x1174, 0x0000 },
274 { 0x1178, 0x0000 }, { 0x077a, 0x0000 },
275 { 0x077c, 0x0000 }, { 0x077e, 0x0000 },
276 { 0x0780, 0x0000 }, { 0x0782, 0x0000 },
277 { 0x0784, 0x0000 }, { 0x0786, 0x0000 },
278 { 0x0788, 0x0000 }, { 0x07a2, 0x0000 },
279 { 0x07a4, 0x0000 }, { 0x07a6, 0x0000 },
280 { 0x07a8, 0x0000 }, { 0x07b6, 0x0000 },
281 { 0x07b8, 0x0002 }, { 0x07ba, 0x0004 },
282 { 0x07bc, 0x0004 }, { 0x07be, 0x0005 },
283 { 0x07c0, 0x0005 }, { S5K6AA_TERM, 0 },
284 };
285
286 /* TODO: Add RGB888 and Bayer format */
287 static const struct s5k6aa_pixfmt s5k6aa_formats[] = {
288 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 5 },
289 /* range 16-240 */
290 { MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_REC709, 6 },
291 { MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_JPEG, 0 },
292 };
293
294 static const struct s5k6aa_interval s5k6aa_intervals[] = {
295 { 1000, {10000, 1000000}, {1280, 1024} }, /* 10 fps */
296 { 666, {15000, 1000000}, {1280, 1024} }, /* 15 fps */
297 { 500, {20000, 1000000}, {1280, 720} }, /* 20 fps */
298 { 400, {25000, 1000000}, {640, 480} }, /* 25 fps */
299 { 333, {33300, 1000000}, {640, 480} }, /* 30 fps */
300 };
301
302 #define S5K6AA_INTERVAL_DEF_INDEX 1 /* 15 fps */
303
304 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
305 {
306 return &container_of(ctrl->handler, struct s5k6aa, ctrls.handler)->sd;
307 }
308
309 static inline struct s5k6aa *to_s5k6aa(struct v4l2_subdev *sd)
310 {
311 return container_of(sd, struct s5k6aa, sd);
312 }
313
314 /* Set initial values for all preview presets */
315 static void s5k6aa_presets_data_init(struct s5k6aa *s5k6aa)
316 {
317 struct s5k6aa_preset *preset = &s5k6aa->presets[0];
318 int i;
319
320 for (i = 0; i < S5K6AA_MAX_PRESETS; i++) {
321 preset->mbus_fmt.width = S5K6AA_OUT_WIDTH_DEF;
322 preset->mbus_fmt.height = S5K6AA_OUT_HEIGHT_DEF;
323 preset->mbus_fmt.code = s5k6aa_formats[0].code;
324 preset->index = i;
325 preset->clk_id = 0;
326 preset++;
327 }
328
329 s5k6aa->fiv = &s5k6aa_intervals[S5K6AA_INTERVAL_DEF_INDEX];
330 s5k6aa->preset = &s5k6aa->presets[0];
331 }
332
333 static int s5k6aa_i2c_read(struct i2c_client *client, u16 addr, u16 *val)
334 {
335 u8 wbuf[2] = {addr >> 8, addr & 0xFF};
336 struct i2c_msg msg[2];
337 u8 rbuf[2];
338 int ret;
339
340 msg[0].addr = client->addr;
341 msg[0].flags = 0;
342 msg[0].len = 2;
343 msg[0].buf = wbuf;
344
345 msg[1].addr = client->addr;
346 msg[1].flags = I2C_M_RD;
347 msg[1].len = 2;
348 msg[1].buf = rbuf;
349
350 ret = i2c_transfer(client->adapter, msg, 2);
351 *val = be16_to_cpu(*((__be16 *)rbuf));
352
353 v4l2_dbg(3, debug, client, "i2c_read: 0x%04X : 0x%04x\n", addr, *val);
354
355 return ret == 2 ? 0 : ret;
356 }
357
358 static int s5k6aa_i2c_write(struct i2c_client *client, u16 addr, u16 val)
359 {
360 u8 buf[4] = {addr >> 8, addr & 0xFF, val >> 8, val & 0xFF};
361
362 int ret = i2c_master_send(client, buf, 4);
363 v4l2_dbg(3, debug, client, "i2c_write: 0x%04X : 0x%04x\n", addr, val);
364
365 return ret == 4 ? 0 : ret;
366 }
367
368 /* The command register write, assumes Command_Wr_addH = 0x7000. */
369 static int s5k6aa_write(struct i2c_client *c, u16 addr, u16 val)
370 {
371 int ret = s5k6aa_i2c_write(c, REG_CMDWR_ADDRL, addr);
372 if (ret)
373 return ret;
374 return s5k6aa_i2c_write(c, REG_CMDBUF0_ADDR, val);
375 }
376
377 /* The command register read, assumes Command_Rd_addH = 0x7000. */
378 static int s5k6aa_read(struct i2c_client *client, u16 addr, u16 *val)
379 {
380 int ret = s5k6aa_i2c_write(client, REG_CMDRD_ADDRL, addr);
381 if (ret)
382 return ret;
383 return s5k6aa_i2c_read(client, REG_CMDBUF0_ADDR, val);
384 }
385
386 static int s5k6aa_write_array(struct v4l2_subdev *sd,
387 const struct s5k6aa_regval *msg)
388 {
389 struct i2c_client *client = v4l2_get_subdevdata(sd);
390 u16 addr_incr = 0;
391 int ret = 0;
392
393 while (msg->addr != S5K6AA_TERM) {
394 if (addr_incr != 2)
395 ret = s5k6aa_i2c_write(client, REG_CMDWR_ADDRL,
396 msg->addr);
397 if (ret)
398 break;
399 ret = s5k6aa_i2c_write(client, REG_CMDBUF0_ADDR, msg->val);
400 if (ret)
401 break;
402 /* Assume that msg->addr is always less than 0xfffc */
403 addr_incr = (msg + 1)->addr - msg->addr;
404 msg++;
405 }
406
407 return ret;
408 }
409
410 /* Configure the AHB high address bytes for GTG registers access */
411 static int s5k6aa_set_ahb_address(struct i2c_client *client)
412 {
413 int ret = s5k6aa_i2c_write(client, AHB_MSB_ADDR_PTR, GEN_REG_OFFSH);
414 if (ret)
415 return ret;
416 ret = s5k6aa_i2c_write(client, REG_CMDRD_ADDRH, HOST_SWIF_OFFSH);
417 if (ret)
418 return ret;
419 return s5k6aa_i2c_write(client, REG_CMDWR_ADDRH, HOST_SWIF_OFFSH);
420 }
421
422 /**
423 * s5k6aa_configure_pixel_clock - apply ISP main clock/PLL configuration
424 * @s5k6aa: pointer to &struct s5k6aa describing the device
425 *
426 * Configure the internal ISP PLL for the required output frequency.
427 * Locking: called with s5k6aa.lock mutex held.
428 */
429 static int s5k6aa_configure_pixel_clocks(struct s5k6aa *s5k6aa)
430 {
431 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
432 unsigned long fmclk = s5k6aa->mclk_frequency / 1000;
433 u16 status;
434 int ret;
435
436 if (WARN(fmclk < MIN_MCLK_FREQ_KHZ || fmclk > MAX_MCLK_FREQ_KHZ,
437 "Invalid clock frequency: %ld\n", fmclk))
438 return -EINVAL;
439
440 s5k6aa->pclk_fmin = PCLK_FREQ_MIN;
441 s5k6aa->pclk_fmax = PCLK_FREQ_MAX;
442 s5k6aa->clk_fop = SYS_PLL_OUT_FREQ;
443
444 /* External input clock frequency in kHz */
445 ret = s5k6aa_write(c, REG_I_INCLK_FREQ_H, fmclk >> 16);
446 if (!ret)
447 ret = s5k6aa_write(c, REG_I_INCLK_FREQ_L, fmclk & 0xFFFF);
448 if (!ret)
449 ret = s5k6aa_write(c, REG_I_USE_NPVI_CLOCKS, 1);
450 /* Internal PLL frequency */
451 if (!ret)
452 ret = s5k6aa_write(c, REG_I_OPCLK_4KHZ(0), s5k6aa->clk_fop);
453 if (!ret)
454 ret = s5k6aa_write(c, REG_I_MIN_OUTRATE_4KHZ(0),
455 s5k6aa->pclk_fmin);
456 if (!ret)
457 ret = s5k6aa_write(c, REG_I_MAX_OUTRATE_4KHZ(0),
458 s5k6aa->pclk_fmax);
459 if (!ret)
460 ret = s5k6aa_write(c, REG_I_INIT_PARAMS_UPDATED, 1);
461 if (!ret)
462 ret = s5k6aa_read(c, REG_I_ERROR_INFO, &status);
463
464 return ret ? ret : (status ? -EINVAL : 0);
465 }
466
467 /* Set horizontal and vertical image flipping */
468 static int s5k6aa_set_mirror(struct s5k6aa *s5k6aa, int horiz_flip)
469 {
470 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
471 int index = s5k6aa->preset->index;
472
473 unsigned int vflip = s5k6aa->ctrls.vflip->val ^ s5k6aa->inv_vflip;
474 unsigned int flip = (horiz_flip ^ s5k6aa->inv_hflip) | (vflip << 1);
475
476 return s5k6aa_write(client, REG_P_PREV_MIRROR(index), flip);
477 }
478
479 /* Configure auto/manual white balance and R/G/B gains */
480 static int s5k6aa_set_awb(struct s5k6aa *s5k6aa, int awb)
481 {
482 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
483 struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
484 u16 reg;
485
486 int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, &reg);
487
488 if (!ret && !awb) {
489 ret = s5k6aa_write(c, REG_SF_RGAIN, ctrls->gain_red->val);
490 if (!ret)
491 ret = s5k6aa_write(c, REG_SF_RGAIN_CHG, 1);
492 if (ret)
493 return ret;
494
495 ret = s5k6aa_write(c, REG_SF_GGAIN, ctrls->gain_green->val);
496 if (!ret)
497 ret = s5k6aa_write(c, REG_SF_GGAIN_CHG, 1);
498 if (ret)
499 return ret;
500
501 ret = s5k6aa_write(c, REG_SF_BGAIN, ctrls->gain_blue->val);
502 if (!ret)
503 ret = s5k6aa_write(c, REG_SF_BGAIN_CHG, 1);
504 }
505 if (!ret) {
506 reg = awb ? reg | AALG_WB_EN_MASK : reg & ~AALG_WB_EN_MASK;
507 ret = s5k6aa_write(c, REG_DBG_AUTOALG_EN, reg);
508 }
509
510 return ret;
511 }
512
513 /* Program FW with exposure time, 'exposure' in us units */
514 static int s5k6aa_set_user_exposure(struct i2c_client *client, int exposure)
515 {
516 unsigned int time = exposure / 10;
517
518 int ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_L, time & 0xffff);
519 if (!ret)
520 ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_H, time >> 16);
521 if (ret)
522 return ret;
523 return s5k6aa_write(client, REG_SF_USR_EXPOSURE_CHG, 1);
524 }
525
526 static int s5k6aa_set_user_gain(struct i2c_client *client, int gain)
527 {
528 int ret = s5k6aa_write(client, REG_SF_USR_TOT_GAIN, gain);
529 if (ret)
530 return ret;
531 return s5k6aa_write(client, REG_SF_USR_TOT_GAIN_CHG, 1);
532 }
533
534 /* Set auto/manual exposure and total gain */
535 static int s5k6aa_set_auto_exposure(struct s5k6aa *s5k6aa, int value)
536 {
537 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
538 unsigned int exp_time = s5k6aa->ctrls.exposure->val;
539 u16 auto_alg;
540
541 int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, &auto_alg);
542 if (ret)
543 return ret;
544
545 v4l2_dbg(1, debug, c, "man_exp: %d, auto_exp: %d, a_alg: 0x%x\n",
546 exp_time, value, auto_alg);
547
548 if (value == V4L2_EXPOSURE_AUTO) {
549 auto_alg |= AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK;
550 } else {
551 ret = s5k6aa_set_user_exposure(c, exp_time);
552 if (ret)
553 return ret;
554 ret = s5k6aa_set_user_gain(c, s5k6aa->ctrls.gain->val);
555 if (ret)
556 return ret;
557 auto_alg &= ~(AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK);
558 }
559
560 return s5k6aa_write(c, REG_DBG_AUTOALG_EN, auto_alg);
561 }
562
563 static int s5k6aa_set_anti_flicker(struct s5k6aa *s5k6aa, int value)
564 {
565 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
566 u16 auto_alg;
567 int ret;
568
569 ret = s5k6aa_read(client, REG_DBG_AUTOALG_EN, &auto_alg);
570 if (ret)
571 return ret;
572
573 if (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) {
574 auto_alg |= AALG_FLICKER_EN_MASK;
575 } else {
576 auto_alg &= ~AALG_FLICKER_EN_MASK;
577 /* The V4L2_CID_LINE_FREQUENCY control values match
578 * the register values */
579 ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT, value);
580 if (ret)
581 return ret;
582 ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT_CHG, 1);
583 if (ret)
584 return ret;
585 }
586
587 return s5k6aa_write(client, REG_DBG_AUTOALG_EN, auto_alg);
588 }
589
590 static int s5k6aa_set_colorfx(struct s5k6aa *s5k6aa, int val)
591 {
592 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
593 static const struct v4l2_control colorfx[] = {
594 { V4L2_COLORFX_NONE, 0 },
595 { V4L2_COLORFX_BW, 1 },
596 { V4L2_COLORFX_NEGATIVE, 2 },
597 { V4L2_COLORFX_SEPIA, 3 },
598 { V4L2_COLORFX_SKY_BLUE, 4 },
599 { V4L2_COLORFX_SKETCH, 5 },
600 };
601 int i;
602
603 for (i = 0; i < ARRAY_SIZE(colorfx); i++) {
604 if (colorfx[i].id == val)
605 return s5k6aa_write(client, REG_G_SPEC_EFFECTS,
606 colorfx[i].value);
607 }
608 return -EINVAL;
609 }
610
611 static int s5k6aa_preview_config_status(struct i2c_client *client)
612 {
613 u16 error = 0;
614 int ret = s5k6aa_read(client, REG_G_PREV_CFG_ERROR, &error);
615
616 v4l2_dbg(1, debug, client, "error: 0x%x (%d)\n", error, ret);
617 return ret ? ret : (error ? -EINVAL : 0);
618 }
619
620 static int s5k6aa_get_pixfmt_index(struct s5k6aa *s5k6aa,
621 struct v4l2_mbus_framefmt *mf)
622 {
623 unsigned int i;
624
625 for (i = 0; i < ARRAY_SIZE(s5k6aa_formats); i++)
626 if (mf->colorspace == s5k6aa_formats[i].colorspace &&
627 mf->code == s5k6aa_formats[i].code)
628 return i;
629 return 0;
630 }
631
632 static int s5k6aa_set_output_framefmt(struct s5k6aa *s5k6aa,
633 struct s5k6aa_preset *preset)
634 {
635 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
636 int fmt_index = s5k6aa_get_pixfmt_index(s5k6aa, &preset->mbus_fmt);
637 int ret;
638
639 ret = s5k6aa_write(client, REG_P_OUT_WIDTH(preset->index),
640 preset->mbus_fmt.width);
641 if (!ret)
642 ret = s5k6aa_write(client, REG_P_OUT_HEIGHT(preset->index),
643 preset->mbus_fmt.height);
644 if (!ret)
645 ret = s5k6aa_write(client, REG_P_FMT(preset->index),
646 s5k6aa_formats[fmt_index].reg_p_fmt);
647 return ret;
648 }
649
650 static int s5k6aa_set_input_params(struct s5k6aa *s5k6aa)
651 {
652 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
653 struct v4l2_rect *r = &s5k6aa->ccd_rect;
654 int ret;
655
656 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_WIDTH, r->width);
657 if (!ret)
658 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_HEIGHT, r->height);
659 if (!ret)
660 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_XOFFS, r->left);
661 if (!ret)
662 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_YOFFS, r->top);
663 if (!ret)
664 ret = s5k6aa_write(c, REG_G_INPUTS_CHANGE_REQ, 1);
665 if (!ret)
666 s5k6aa->apply_crop = 0;
667
668 return ret;
669 }
670
671 /**
672 * s5k6aa_configure_video_bus - configure the video output interface
673 * @s5k6aa: pointer to &struct s5k6aa describing the device
674 * @bus_type: video bus type: parallel or MIPI-CSI
675 * @nlanes: number of MIPI lanes to be used (MIPI-CSI only)
676 *
677 * Note: Only parallel bus operation has been tested.
678 */
679 static int s5k6aa_configure_video_bus(struct s5k6aa *s5k6aa,
680 enum v4l2_mbus_type bus_type, int nlanes)
681 {
682 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
683 u16 cfg = 0;
684 int ret;
685
686 /*
687 * TODO: The sensor is supposed to support BT.601 and BT.656
688 * but there is nothing indicating how to switch between both
689 * in the datasheet. For now default BT.601 interface is assumed.
690 */
691 if (bus_type == V4L2_MBUS_CSI2)
692 cfg = nlanes;
693 else if (bus_type != V4L2_MBUS_PARALLEL)
694 return -EINVAL;
695
696 ret = s5k6aa_write(client, REG_OIF_EN_MIPI_LANES, cfg);
697 if (ret)
698 return ret;
699 return s5k6aa_write(client, REG_OIF_CFG_CHG, 1);
700 }
701
702 /* This function should be called when switching to new user configuration set*/
703 static int s5k6aa_new_config_sync(struct i2c_client *client, int timeout,
704 int cid)
705 {
706 unsigned long end = jiffies + msecs_to_jiffies(timeout);
707 u16 reg = 1;
708 int ret;
709
710 ret = s5k6aa_write(client, REG_G_ACTIVE_PREV_CFG, cid);
711 if (!ret)
712 ret = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
713 if (!ret)
714 ret = s5k6aa_write(client, REG_G_NEW_CFG_SYNC, 1);
715 if (timeout == 0)
716 return ret;
717
718 while (ret >= 0 && time_is_after_jiffies(end)) {
719 ret = s5k6aa_read(client, REG_G_NEW_CFG_SYNC, &reg);
720 if (!reg)
721 return 0;
722 usleep_range(1000, 5000);
723 }
724 return ret ? ret : -ETIMEDOUT;
725 }
726
727 /**
728 * s5k6aa_set_prev_config - write user preview register set
729 * @s5k6aa: pointer to &struct s5k6aa describing the device
730 * @preset: s5kaa preset to be applied
731 *
732 * Configure output resolution and color fromat, pixel clock
733 * frequency range, device frame rate type and frame period range.
734 */
735 static int s5k6aa_set_prev_config(struct s5k6aa *s5k6aa,
736 struct s5k6aa_preset *preset)
737 {
738 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
739 int idx = preset->index;
740 u16 frame_rate_q;
741 int ret;
742
743 if (s5k6aa->fiv->reg_fr_time >= S5K6AA_MAX_HIGHRES_FR_TIME)
744 frame_rate_q = FR_RATE_Q_BEST_FRRATE;
745 else
746 frame_rate_q = FR_RATE_Q_BEST_QUALITY;
747
748 ret = s5k6aa_set_output_framefmt(s5k6aa, preset);
749 if (!ret)
750 ret = s5k6aa_write(client, REG_P_MAX_OUT_RATE(idx),
751 s5k6aa->pclk_fmax);
752 if (!ret)
753 ret = s5k6aa_write(client, REG_P_MIN_OUT_RATE(idx),
754 s5k6aa->pclk_fmin);
755 if (!ret)
756 ret = s5k6aa_write(client, REG_P_CLK_INDEX(idx),
757 preset->clk_id);
758 if (!ret)
759 ret = s5k6aa_write(client, REG_P_FR_RATE_TYPE(idx),
760 FR_RATE_DYNAMIC);
761 if (!ret)
762 ret = s5k6aa_write(client, REG_P_FR_RATE_Q_TYPE(idx),
763 frame_rate_q);
764 if (!ret)
765 ret = s5k6aa_write(client, REG_P_MAX_FR_TIME(idx),
766 s5k6aa->fiv->reg_fr_time + 33);
767 if (!ret)
768 ret = s5k6aa_write(client, REG_P_MIN_FR_TIME(idx),
769 s5k6aa->fiv->reg_fr_time - 33);
770 if (!ret)
771 ret = s5k6aa_new_config_sync(client, 250, idx);
772 if (!ret)
773 ret = s5k6aa_preview_config_status(client);
774 if (!ret)
775 s5k6aa->apply_cfg = 0;
776
777 v4l2_dbg(1, debug, client, "Frame interval: %d +/- 3.3ms. (%d)\n",
778 s5k6aa->fiv->reg_fr_time, ret);
779 return ret;
780 }
781
782 /**
783 * s5k6aa_initialize_isp - basic ISP MCU initialization
784 * @sd: pointer to V4L2 sub-device descriptor
785 *
786 * Configure AHB addresses for registers read/write; configure PLLs for
787 * required output pixel clock. The ISP power supply needs to be already
788 * enabled, with an optional H/W reset.
789 * Locking: called with s5k6aa.lock mutex held.
790 */
791 static int s5k6aa_initialize_isp(struct v4l2_subdev *sd)
792 {
793 struct i2c_client *client = v4l2_get_subdevdata(sd);
794 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
795 int ret;
796
797 s5k6aa->apply_crop = 1;
798 s5k6aa->apply_cfg = 1;
799 msleep(100);
800
801 ret = s5k6aa_set_ahb_address(client);
802 if (ret)
803 return ret;
804 ret = s5k6aa_configure_video_bus(s5k6aa, s5k6aa->bus_type,
805 s5k6aa->mipi_lanes);
806 if (ret)
807 return ret;
808 ret = s5k6aa_write_array(sd, s5k6aa_analog_config);
809 if (ret)
810 return ret;
811 msleep(20);
812
813 return s5k6aa_configure_pixel_clocks(s5k6aa);
814 }
815
816 static int s5k6aa_gpio_set_value(struct s5k6aa *priv, int id, u32 val)
817 {
818 if (!gpio_is_valid(priv->gpio[id].gpio))
819 return 0;
820 gpio_set_value(priv->gpio[id].gpio, !!val);
821 return 1;
822 }
823
824 static int s5k6aa_gpio_assert(struct s5k6aa *priv, int id)
825 {
826 return s5k6aa_gpio_set_value(priv, id, priv->gpio[id].level);
827 }
828
829 static int s5k6aa_gpio_deassert(struct s5k6aa *priv, int id)
830 {
831 return s5k6aa_gpio_set_value(priv, id, !priv->gpio[id].level);
832 }
833
834 static int __s5k6aa_power_on(struct s5k6aa *s5k6aa)
835 {
836 int ret;
837
838 ret = regulator_bulk_enable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
839 if (ret)
840 return ret;
841 if (s5k6aa_gpio_deassert(s5k6aa, STBY))
842 usleep_range(150, 200);
843
844 if (s5k6aa->s_power)
845 ret = s5k6aa->s_power(1);
846 usleep_range(4000, 5000);
847
848 if (s5k6aa_gpio_deassert(s5k6aa, RST))
849 msleep(20);
850
851 return ret;
852 }
853
854 static int __s5k6aa_power_off(struct s5k6aa *s5k6aa)
855 {
856 int ret;
857
858 if (s5k6aa_gpio_assert(s5k6aa, RST))
859 usleep_range(100, 150);
860
861 if (s5k6aa->s_power) {
862 ret = s5k6aa->s_power(0);
863 if (ret)
864 return ret;
865 }
866 if (s5k6aa_gpio_assert(s5k6aa, STBY))
867 usleep_range(50, 100);
868 s5k6aa->streaming = 0;
869
870 return regulator_bulk_disable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
871 }
872
873 /*
874 * V4L2 subdev core and video operations
875 */
876 static int s5k6aa_set_power(struct v4l2_subdev *sd, int on)
877 {
878 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
879 int ret = 0;
880
881 mutex_lock(&s5k6aa->lock);
882
883 if (s5k6aa->power == !on) {
884 if (on) {
885 ret = __s5k6aa_power_on(s5k6aa);
886 if (!ret)
887 ret = s5k6aa_initialize_isp(sd);
888 } else {
889 ret = __s5k6aa_power_off(s5k6aa);
890 }
891
892 if (!ret)
893 s5k6aa->power += on ? 1 : -1;
894 }
895
896 mutex_unlock(&s5k6aa->lock);
897
898 if (!on || ret || s5k6aa->power != 1)
899 return ret;
900
901 return v4l2_ctrl_handler_setup(sd->ctrl_handler);
902 }
903
904 static int __s5k6aa_stream(struct s5k6aa *s5k6aa, int enable)
905 {
906 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
907 int ret = 0;
908
909 ret = s5k6aa_write(client, REG_G_ENABLE_PREV, enable);
910 if (!ret)
911 ret = s5k6aa_write(client, REG_G_ENABLE_PREV_CHG, 1);
912 if (!ret)
913 s5k6aa->streaming = enable;
914
915 return ret;
916 }
917
918 static int s5k6aa_s_stream(struct v4l2_subdev *sd, int on)
919 {
920 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
921 int ret = 0;
922
923 mutex_lock(&s5k6aa->lock);
924
925 if (s5k6aa->streaming == !on) {
926 if (!ret && s5k6aa->apply_cfg)
927 ret = s5k6aa_set_prev_config(s5k6aa, s5k6aa->preset);
928 if (s5k6aa->apply_crop)
929 ret = s5k6aa_set_input_params(s5k6aa);
930 if (!ret)
931 ret = __s5k6aa_stream(s5k6aa, !!on);
932 }
933 mutex_unlock(&s5k6aa->lock);
934
935 return ret;
936 }
937
938 static int s5k6aa_g_frame_interval(struct v4l2_subdev *sd,
939 struct v4l2_subdev_frame_interval *fi)
940 {
941 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
942
943 mutex_lock(&s5k6aa->lock);
944 fi->interval = s5k6aa->fiv->interval;
945 mutex_unlock(&s5k6aa->lock);
946
947 return 0;
948 }
949
950 static int __s5k6aa_set_frame_interval(struct s5k6aa *s5k6aa,
951 struct v4l2_subdev_frame_interval *fi)
952 {
953 struct v4l2_mbus_framefmt *mbus_fmt = &s5k6aa->preset->mbus_fmt;
954 const struct s5k6aa_interval *fiv = &s5k6aa_intervals[0];
955 unsigned int err, min_err = UINT_MAX;
956 unsigned int i, fr_time;
957
958 if (fi->interval.denominator == 0)
959 return -EINVAL;
960
961 fr_time = fi->interval.numerator * 10000 / fi->interval.denominator;
962
963 for (i = 0; i < ARRAY_SIZE(s5k6aa_intervals); i++) {
964 const struct s5k6aa_interval *iv = &s5k6aa_intervals[i];
965
966 if (mbus_fmt->width > iv->size.width ||
967 mbus_fmt->height > iv->size.height)
968 continue;
969
970 err = abs(iv->reg_fr_time - fr_time);
971 if (err < min_err) {
972 fiv = iv;
973 min_err = err;
974 }
975 }
976 s5k6aa->fiv = fiv;
977
978 v4l2_dbg(1, debug, &s5k6aa->sd, "Changed frame interval to %d us\n",
979 fiv->reg_fr_time * 100);
980 return 0;
981 }
982
983 static int s5k6aa_s_frame_interval(struct v4l2_subdev *sd,
984 struct v4l2_subdev_frame_interval *fi)
985 {
986 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
987 int ret;
988
989 v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n",
990 fi->interval.numerator, fi->interval.denominator);
991
992 mutex_lock(&s5k6aa->lock);
993 ret = __s5k6aa_set_frame_interval(s5k6aa, fi);
994 s5k6aa->apply_cfg = 1;
995
996 mutex_unlock(&s5k6aa->lock);
997 return ret;
998 }
999
1000 /*
1001 * V4L2 subdev pad level and video operations
1002 */
1003 static int s5k6aa_enum_frame_interval(struct v4l2_subdev *sd,
1004 struct v4l2_subdev_pad_config *cfg,
1005 struct v4l2_subdev_frame_interval_enum *fie)
1006 {
1007 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1008 const struct s5k6aa_interval *fi;
1009 int ret = 0;
1010
1011 if (fie->index >= ARRAY_SIZE(s5k6aa_intervals))
1012 return -EINVAL;
1013
1014 v4l_bound_align_image(&fie->width, S5K6AA_WIN_WIDTH_MIN,
1015 S5K6AA_WIN_WIDTH_MAX, 1,
1016 &fie->height, S5K6AA_WIN_HEIGHT_MIN,
1017 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1018
1019 mutex_lock(&s5k6aa->lock);
1020 fi = &s5k6aa_intervals[fie->index];
1021 if (fie->width > fi->size.width || fie->height > fi->size.height)
1022 ret = -EINVAL;
1023 else
1024 fie->interval = fi->interval;
1025 mutex_unlock(&s5k6aa->lock);
1026
1027 return ret;
1028 }
1029
1030 static int s5k6aa_enum_mbus_code(struct v4l2_subdev *sd,
1031 struct v4l2_subdev_pad_config *cfg,
1032 struct v4l2_subdev_mbus_code_enum *code)
1033 {
1034 if (code->index >= ARRAY_SIZE(s5k6aa_formats))
1035 return -EINVAL;
1036
1037 code->code = s5k6aa_formats[code->index].code;
1038 return 0;
1039 }
1040
1041 static int s5k6aa_enum_frame_size(struct v4l2_subdev *sd,
1042 struct v4l2_subdev_pad_config *cfg,
1043 struct v4l2_subdev_frame_size_enum *fse)
1044 {
1045 int i = ARRAY_SIZE(s5k6aa_formats);
1046
1047 if (fse->index > 0)
1048 return -EINVAL;
1049
1050 while (--i)
1051 if (fse->code == s5k6aa_formats[i].code)
1052 break;
1053
1054 fse->code = s5k6aa_formats[i].code;
1055 fse->min_width = S5K6AA_WIN_WIDTH_MIN;
1056 fse->max_width = S5K6AA_WIN_WIDTH_MAX;
1057 fse->max_height = S5K6AA_WIN_HEIGHT_MIN;
1058 fse->min_height = S5K6AA_WIN_HEIGHT_MAX;
1059
1060 return 0;
1061 }
1062
1063 static struct v4l2_rect *
1064 __s5k6aa_get_crop_rect(struct s5k6aa *s5k6aa, struct v4l2_subdev_pad_config *cfg,
1065 enum v4l2_subdev_format_whence which)
1066 {
1067 if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
1068 return &s5k6aa->ccd_rect;
1069
1070 WARN_ON(which != V4L2_SUBDEV_FORMAT_TRY);
1071 return v4l2_subdev_get_try_crop(&s5k6aa->sd, cfg, 0);
1072 }
1073
1074 static void s5k6aa_try_format(struct s5k6aa *s5k6aa,
1075 struct v4l2_mbus_framefmt *mf)
1076 {
1077 unsigned int index;
1078
1079 v4l_bound_align_image(&mf->width, S5K6AA_WIN_WIDTH_MIN,
1080 S5K6AA_WIN_WIDTH_MAX, 1,
1081 &mf->height, S5K6AA_WIN_HEIGHT_MIN,
1082 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1083
1084 if (mf->colorspace != V4L2_COLORSPACE_JPEG &&
1085 mf->colorspace != V4L2_COLORSPACE_REC709)
1086 mf->colorspace = V4L2_COLORSPACE_JPEG;
1087
1088 index = s5k6aa_get_pixfmt_index(s5k6aa, mf);
1089
1090 mf->colorspace = s5k6aa_formats[index].colorspace;
1091 mf->code = s5k6aa_formats[index].code;
1092 mf->field = V4L2_FIELD_NONE;
1093 }
1094
1095 static int s5k6aa_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
1096 struct v4l2_subdev_format *fmt)
1097 {
1098 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1099 struct v4l2_mbus_framefmt *mf;
1100
1101 memset(fmt->reserved, 0, sizeof(fmt->reserved));
1102
1103 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1104 mf = v4l2_subdev_get_try_format(sd, cfg, 0);
1105 fmt->format = *mf;
1106 return 0;
1107 }
1108
1109 mutex_lock(&s5k6aa->lock);
1110 fmt->format = s5k6aa->preset->mbus_fmt;
1111 mutex_unlock(&s5k6aa->lock);
1112
1113 return 0;
1114 }
1115
1116 static int s5k6aa_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg,
1117 struct v4l2_subdev_format *fmt)
1118 {
1119 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1120 struct s5k6aa_preset *preset = s5k6aa->preset;
1121 struct v4l2_mbus_framefmt *mf;
1122 struct v4l2_rect *crop;
1123 int ret = 0;
1124
1125 mutex_lock(&s5k6aa->lock);
1126 s5k6aa_try_format(s5k6aa, &fmt->format);
1127
1128 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1129 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1130 crop = v4l2_subdev_get_try_crop(sd, cfg, 0);
1131 } else {
1132 if (s5k6aa->streaming) {
1133 ret = -EBUSY;
1134 } else {
1135 mf = &preset->mbus_fmt;
1136 crop = &s5k6aa->ccd_rect;
1137 s5k6aa->apply_cfg = 1;
1138 }
1139 }
1140
1141 if (ret == 0) {
1142 struct v4l2_subdev_frame_interval fiv = {
1143 .interval = {0, 1}
1144 };
1145
1146 *mf = fmt->format;
1147 /*
1148 * Make sure the crop window is valid, i.e. its size is
1149 * greater than the output window, as the ISP supports
1150 * only down-scaling.
1151 */
1152 crop->width = clamp_t(unsigned int, crop->width, mf->width,
1153 S5K6AA_WIN_WIDTH_MAX);
1154 crop->height = clamp_t(unsigned int, crop->height, mf->height,
1155 S5K6AA_WIN_HEIGHT_MAX);
1156 crop->left = clamp_t(unsigned int, crop->left, 0,
1157 S5K6AA_WIN_WIDTH_MAX - crop->width);
1158 crop->top = clamp_t(unsigned int, crop->top, 0,
1159 S5K6AA_WIN_HEIGHT_MAX - crop->height);
1160
1161 /* Reset to minimum possible frame interval */
1162 ret = __s5k6aa_set_frame_interval(s5k6aa, &fiv);
1163 }
1164 mutex_unlock(&s5k6aa->lock);
1165
1166 return ret;
1167 }
1168
1169 static int s5k6aa_get_selection(struct v4l2_subdev *sd,
1170 struct v4l2_subdev_pad_config *cfg,
1171 struct v4l2_subdev_selection *sel)
1172 {
1173 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1174 struct v4l2_rect *rect;
1175
1176 if (sel->target != V4L2_SEL_TGT_CROP)
1177 return -EINVAL;
1178
1179 memset(sel->reserved, 0, sizeof(sel->reserved));
1180
1181 mutex_lock(&s5k6aa->lock);
1182 rect = __s5k6aa_get_crop_rect(s5k6aa, cfg, sel->which);
1183 sel->r = *rect;
1184 mutex_unlock(&s5k6aa->lock);
1185
1186 v4l2_dbg(1, debug, sd, "Current crop rectangle: (%d,%d)/%dx%d\n",
1187 rect->left, rect->top, rect->width, rect->height);
1188
1189 return 0;
1190 }
1191
1192 static int s5k6aa_set_selection(struct v4l2_subdev *sd,
1193 struct v4l2_subdev_pad_config *cfg,
1194 struct v4l2_subdev_selection *sel)
1195 {
1196 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1197 struct v4l2_mbus_framefmt *mf;
1198 unsigned int max_x, max_y;
1199 struct v4l2_rect *crop_r;
1200
1201 if (sel->target != V4L2_SEL_TGT_CROP)
1202 return -EINVAL;
1203
1204 mutex_lock(&s5k6aa->lock);
1205 crop_r = __s5k6aa_get_crop_rect(s5k6aa, cfg, sel->which);
1206
1207 if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1208 mf = &s5k6aa->preset->mbus_fmt;
1209 s5k6aa->apply_crop = 1;
1210 } else {
1211 mf = v4l2_subdev_get_try_format(sd, cfg, 0);
1212 }
1213 v4l_bound_align_image(&sel->r.width, mf->width,
1214 S5K6AA_WIN_WIDTH_MAX, 1,
1215 &sel->r.height, mf->height,
1216 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1217
1218 max_x = (S5K6AA_WIN_WIDTH_MAX - sel->r.width) & ~1;
1219 max_y = (S5K6AA_WIN_HEIGHT_MAX - sel->r.height) & ~1;
1220
1221 sel->r.left = clamp_t(unsigned int, sel->r.left, 0, max_x);
1222 sel->r.top = clamp_t(unsigned int, sel->r.top, 0, max_y);
1223
1224 *crop_r = sel->r;
1225
1226 mutex_unlock(&s5k6aa->lock);
1227
1228 v4l2_dbg(1, debug, sd, "Set crop rectangle: (%d,%d)/%dx%d\n",
1229 crop_r->left, crop_r->top, crop_r->width, crop_r->height);
1230
1231 return 0;
1232 }
1233
1234 static const struct v4l2_subdev_pad_ops s5k6aa_pad_ops = {
1235 .enum_mbus_code = s5k6aa_enum_mbus_code,
1236 .enum_frame_size = s5k6aa_enum_frame_size,
1237 .enum_frame_interval = s5k6aa_enum_frame_interval,
1238 .get_fmt = s5k6aa_get_fmt,
1239 .set_fmt = s5k6aa_set_fmt,
1240 .get_selection = s5k6aa_get_selection,
1241 .set_selection = s5k6aa_set_selection,
1242 };
1243
1244 static const struct v4l2_subdev_video_ops s5k6aa_video_ops = {
1245 .g_frame_interval = s5k6aa_g_frame_interval,
1246 .s_frame_interval = s5k6aa_s_frame_interval,
1247 .s_stream = s5k6aa_s_stream,
1248 };
1249
1250 /*
1251 * V4L2 subdev controls
1252 */
1253
1254 static int s5k6aa_s_ctrl(struct v4l2_ctrl *ctrl)
1255 {
1256 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
1257 struct i2c_client *client = v4l2_get_subdevdata(sd);
1258 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1259 int idx, err = 0;
1260
1261 v4l2_dbg(1, debug, sd, "ctrl: 0x%x, value: %d\n", ctrl->id, ctrl->val);
1262
1263 mutex_lock(&s5k6aa->lock);
1264 /*
1265 * If the device is not powered up by the host driver do
1266 * not apply any controls to H/W at this time. Instead
1267 * the controls will be restored right after power-up.
1268 */
1269 if (s5k6aa->power == 0)
1270 goto unlock;
1271 idx = s5k6aa->preset->index;
1272
1273 switch (ctrl->id) {
1274 case V4L2_CID_AUTO_WHITE_BALANCE:
1275 err = s5k6aa_set_awb(s5k6aa, ctrl->val);
1276 break;
1277
1278 case V4L2_CID_BRIGHTNESS:
1279 err = s5k6aa_write(client, REG_USER_BRIGHTNESS, ctrl->val);
1280 break;
1281
1282 case V4L2_CID_COLORFX:
1283 err = s5k6aa_set_colorfx(s5k6aa, ctrl->val);
1284 break;
1285
1286 case V4L2_CID_CONTRAST:
1287 err = s5k6aa_write(client, REG_USER_CONTRAST, ctrl->val);
1288 break;
1289
1290 case V4L2_CID_EXPOSURE_AUTO:
1291 err = s5k6aa_set_auto_exposure(s5k6aa, ctrl->val);
1292 break;
1293
1294 case V4L2_CID_HFLIP:
1295 err = s5k6aa_set_mirror(s5k6aa, ctrl->val);
1296 if (err)
1297 break;
1298 err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
1299 break;
1300
1301 case V4L2_CID_POWER_LINE_FREQUENCY:
1302 err = s5k6aa_set_anti_flicker(s5k6aa, ctrl->val);
1303 break;
1304
1305 case V4L2_CID_SATURATION:
1306 err = s5k6aa_write(client, REG_USER_SATURATION, ctrl->val);
1307 break;
1308
1309 case V4L2_CID_SHARPNESS:
1310 err = s5k6aa_write(client, REG_USER_SHARPBLUR, ctrl->val);
1311 break;
1312
1313 case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
1314 err = s5k6aa_write(client, REG_P_COLORTEMP(idx), ctrl->val);
1315 if (err)
1316 break;
1317 err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
1318 break;
1319 }
1320 unlock:
1321 mutex_unlock(&s5k6aa->lock);
1322 return err;
1323 }
1324
1325 static const struct v4l2_ctrl_ops s5k6aa_ctrl_ops = {
1326 .s_ctrl = s5k6aa_s_ctrl,
1327 };
1328
1329 static int s5k6aa_log_status(struct v4l2_subdev *sd)
1330 {
1331 v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
1332 return 0;
1333 }
1334
1335 #define V4L2_CID_RED_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1001)
1336 #define V4L2_CID_GREEN_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1002)
1337 #define V4L2_CID_BLUE_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1003)
1338
1339 static const struct v4l2_ctrl_config s5k6aa_ctrls[] = {
1340 {
1341 .ops = &s5k6aa_ctrl_ops,
1342 .id = V4L2_CID_RED_GAIN,
1343 .type = V4L2_CTRL_TYPE_INTEGER,
1344 .name = "Gain, Red",
1345 .min = 0,
1346 .max = 256,
1347 .def = 127,
1348 .step = 1,
1349 }, {
1350 .ops = &s5k6aa_ctrl_ops,
1351 .id = V4L2_CID_GREEN_GAIN,
1352 .type = V4L2_CTRL_TYPE_INTEGER,
1353 .name = "Gain, Green",
1354 .min = 0,
1355 .max = 256,
1356 .def = 127,
1357 .step = 1,
1358 }, {
1359 .ops = &s5k6aa_ctrl_ops,
1360 .id = V4L2_CID_BLUE_GAIN,
1361 .type = V4L2_CTRL_TYPE_INTEGER,
1362 .name = "Gain, Blue",
1363 .min = 0,
1364 .max = 256,
1365 .def = 127,
1366 .step = 1,
1367 },
1368 };
1369
1370 static int s5k6aa_initialize_ctrls(struct s5k6aa *s5k6aa)
1371 {
1372 const struct v4l2_ctrl_ops *ops = &s5k6aa_ctrl_ops;
1373 struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
1374 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
1375
1376 int ret = v4l2_ctrl_handler_init(hdl, 16);
1377 if (ret)
1378 return ret;
1379 /* Auto white balance cluster */
1380 ctrls->awb = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE,
1381 0, 1, 1, 1);
1382 ctrls->gain_red = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[0], NULL);
1383 ctrls->gain_green = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[1], NULL);
1384 ctrls->gain_blue = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[2], NULL);
1385 v4l2_ctrl_auto_cluster(4, &ctrls->awb, 0, false);
1386
1387 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
1388 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
1389 v4l2_ctrl_cluster(2, &ctrls->hflip);
1390
1391 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
1392 V4L2_CID_EXPOSURE_AUTO,
1393 V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
1394 /* Exposure time: x 1 us */
1395 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
1396 0, 6000000U, 1, 100000U);
1397 /* Total gain: 256 <=> 1x */
1398 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
1399 0, 256, 1, 256);
1400 v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 0, false);
1401
1402 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_POWER_LINE_FREQUENCY,
1403 V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
1404 V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
1405
1406 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
1407 V4L2_COLORFX_SKY_BLUE, ~0x6f, V4L2_COLORFX_NONE);
1408
1409 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_WHITE_BALANCE_TEMPERATURE,
1410 0, 256, 1, 0);
1411
1412 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0);
1413 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -127, 127, 1, 0);
1414 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0);
1415 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -127, 127, 1, 0);
1416
1417 if (hdl->error) {
1418 ret = hdl->error;
1419 v4l2_ctrl_handler_free(hdl);
1420 return ret;
1421 }
1422
1423 s5k6aa->sd.ctrl_handler = hdl;
1424 return 0;
1425 }
1426
1427 /*
1428 * V4L2 subdev internal operations
1429 */
1430 static int s5k6aa_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1431 {
1432 struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(sd, fh->pad, 0);
1433 struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0);
1434
1435 format->colorspace = s5k6aa_formats[0].colorspace;
1436 format->code = s5k6aa_formats[0].code;
1437 format->width = S5K6AA_OUT_WIDTH_DEF;
1438 format->height = S5K6AA_OUT_HEIGHT_DEF;
1439 format->field = V4L2_FIELD_NONE;
1440
1441 crop->width = S5K6AA_WIN_WIDTH_MAX;
1442 crop->height = S5K6AA_WIN_HEIGHT_MAX;
1443 crop->left = 0;
1444 crop->top = 0;
1445
1446 return 0;
1447 }
1448
1449 static int s5k6aa_check_fw_revision(struct s5k6aa *s5k6aa)
1450 {
1451 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
1452 u16 api_ver = 0, fw_rev = 0;
1453
1454 int ret = s5k6aa_set_ahb_address(client);
1455
1456 if (!ret)
1457 ret = s5k6aa_read(client, REG_FW_APIVER, &api_ver);
1458 if (!ret)
1459 ret = s5k6aa_read(client, REG_FW_REVISION, &fw_rev);
1460 if (ret) {
1461 v4l2_err(&s5k6aa->sd, "FW revision check failed!\n");
1462 return ret;
1463 }
1464
1465 v4l2_info(&s5k6aa->sd, "FW API ver.: 0x%X, FW rev.: 0x%X\n",
1466 api_ver, fw_rev);
1467
1468 return api_ver == S5K6AAFX_FW_APIVER ? 0 : -ENODEV;
1469 }
1470
1471 static int s5k6aa_registered(struct v4l2_subdev *sd)
1472 {
1473 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1474 int ret;
1475
1476 mutex_lock(&s5k6aa->lock);
1477 ret = __s5k6aa_power_on(s5k6aa);
1478 if (!ret) {
1479 msleep(100);
1480 ret = s5k6aa_check_fw_revision(s5k6aa);
1481 __s5k6aa_power_off(s5k6aa);
1482 }
1483 mutex_unlock(&s5k6aa->lock);
1484
1485 return ret;
1486 }
1487
1488 static const struct v4l2_subdev_internal_ops s5k6aa_subdev_internal_ops = {
1489 .registered = s5k6aa_registered,
1490 .open = s5k6aa_open,
1491 };
1492
1493 static const struct v4l2_subdev_core_ops s5k6aa_core_ops = {
1494 .s_power = s5k6aa_set_power,
1495 .log_status = s5k6aa_log_status,
1496 };
1497
1498 static const struct v4l2_subdev_ops s5k6aa_subdev_ops = {
1499 .core = &s5k6aa_core_ops,
1500 .pad = &s5k6aa_pad_ops,
1501 .video = &s5k6aa_video_ops,
1502 };
1503
1504 /*
1505 * GPIO setup
1506 */
1507
1508 static int s5k6aa_configure_gpios(struct s5k6aa *s5k6aa,
1509 const struct s5k6aa_platform_data *pdata)
1510 {
1511 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
1512 const struct s5k6aa_gpio *gpio;
1513 unsigned long flags;
1514 int ret;
1515
1516 s5k6aa->gpio[STBY].gpio = -EINVAL;
1517 s5k6aa->gpio[RST].gpio = -EINVAL;
1518
1519 gpio = &pdata->gpio_stby;
1520 if (gpio_is_valid(gpio->gpio)) {
1521 flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
1522 | GPIOF_EXPORT;
1523 ret = devm_gpio_request_one(&client->dev, gpio->gpio, flags,
1524 "S5K6AA_STBY");
1525 if (ret < 0)
1526 return ret;
1527
1528 s5k6aa->gpio[STBY] = *gpio;
1529 }
1530
1531 gpio = &pdata->gpio_reset;
1532 if (gpio_is_valid(gpio->gpio)) {
1533 flags = (gpio->level ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW)
1534 | GPIOF_EXPORT;
1535 ret = devm_gpio_request_one(&client->dev, gpio->gpio, flags,
1536 "S5K6AA_RST");
1537 if (ret < 0)
1538 return ret;
1539
1540 s5k6aa->gpio[RST] = *gpio;
1541 }
1542
1543 return 0;
1544 }
1545
1546 static int s5k6aa_probe(struct i2c_client *client,
1547 const struct i2c_device_id *id)
1548 {
1549 const struct s5k6aa_platform_data *pdata = client->dev.platform_data;
1550 struct v4l2_subdev *sd;
1551 struct s5k6aa *s5k6aa;
1552 int i, ret;
1553
1554 if (pdata == NULL) {
1555 dev_err(&client->dev, "Platform data not specified\n");
1556 return -EINVAL;
1557 }
1558
1559 if (pdata->mclk_frequency == 0) {
1560 dev_err(&client->dev, "MCLK frequency not specified\n");
1561 return -EINVAL;
1562 }
1563
1564 s5k6aa = devm_kzalloc(&client->dev, sizeof(*s5k6aa), GFP_KERNEL);
1565 if (!s5k6aa)
1566 return -ENOMEM;
1567
1568 mutex_init(&s5k6aa->lock);
1569
1570 s5k6aa->mclk_frequency = pdata->mclk_frequency;
1571 s5k6aa->bus_type = pdata->bus_type;
1572 s5k6aa->mipi_lanes = pdata->nlanes;
1573 s5k6aa->s_power = pdata->set_power;
1574 s5k6aa->inv_hflip = pdata->horiz_flip;
1575 s5k6aa->inv_vflip = pdata->vert_flip;
1576
1577 sd = &s5k6aa->sd;
1578 v4l2_i2c_subdev_init(sd, client, &s5k6aa_subdev_ops);
1579 strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name));
1580
1581 sd->internal_ops = &s5k6aa_subdev_internal_ops;
1582 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1583
1584 s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
1585 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1586 ret = media_entity_pads_init(&sd->entity, 1, &s5k6aa->pad);
1587 if (ret)
1588 return ret;
1589
1590 ret = s5k6aa_configure_gpios(s5k6aa, pdata);
1591 if (ret)
1592 goto out_err;
1593
1594 for (i = 0; i < S5K6AA_NUM_SUPPLIES; i++)
1595 s5k6aa->supplies[i].supply = s5k6aa_supply_names[i];
1596
1597 ret = devm_regulator_bulk_get(&client->dev, S5K6AA_NUM_SUPPLIES,
1598 s5k6aa->supplies);
1599 if (ret) {
1600 dev_err(&client->dev, "Failed to get regulators\n");
1601 goto out_err;
1602 }
1603
1604 ret = s5k6aa_initialize_ctrls(s5k6aa);
1605 if (ret)
1606 goto out_err;
1607
1608 s5k6aa_presets_data_init(s5k6aa);
1609
1610 s5k6aa->ccd_rect.width = S5K6AA_WIN_WIDTH_MAX;
1611 s5k6aa->ccd_rect.height = S5K6AA_WIN_HEIGHT_MAX;
1612 s5k6aa->ccd_rect.left = 0;
1613 s5k6aa->ccd_rect.top = 0;
1614
1615 return 0;
1616
1617 out_err:
1618 media_entity_cleanup(&s5k6aa->sd.entity);
1619 return ret;
1620 }
1621
1622 static int s5k6aa_remove(struct i2c_client *client)
1623 {
1624 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1625
1626 v4l2_device_unregister_subdev(sd);
1627 v4l2_ctrl_handler_free(sd->ctrl_handler);
1628 media_entity_cleanup(&sd->entity);
1629
1630 return 0;
1631 }
1632
1633 static const struct i2c_device_id s5k6aa_id[] = {
1634 { DRIVER_NAME, 0 },
1635 { },
1636 };
1637 MODULE_DEVICE_TABLE(i2c, s5k6aa_id);
1638
1639
1640 static struct i2c_driver s5k6aa_i2c_driver = {
1641 .driver = {
1642 .name = DRIVER_NAME
1643 },
1644 .probe = s5k6aa_probe,
1645 .remove = s5k6aa_remove,
1646 .id_table = s5k6aa_id,
1647 };
1648
1649 module_i2c_driver(s5k6aa_i2c_driver);
1650
1651 MODULE_DESCRIPTION("Samsung S5K6AA(FX) SXGA camera driver");
1652 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1653 MODULE_LICENSE("GPL");
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