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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / video / s5k6aa.c
blob0df7f2a418140420c370e514e3c54a2da912820d
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/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 enum v4l2_mbus_pixelcode 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 { V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG, 5 },
289 /* range 16-240 */
290 { V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_REC709, 6 },
291 { V4L2_MBUS_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(*((u16 *)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 *
425 * Configure the internal ISP PLL for the required output frequency.
426 * Locking: called with s5k6aa.lock mutex held.
427 */
428 static int s5k6aa_configure_pixel_clocks(struct s5k6aa *s5k6aa)
429 {
430 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
431 unsigned long fmclk = s5k6aa->mclk_frequency / 1000;
432 u16 status;
433 int ret;
434
435 if (WARN(fmclk < MIN_MCLK_FREQ_KHZ || fmclk > MAX_MCLK_FREQ_KHZ,
436 "Invalid clock frequency: %ld\n", fmclk))
437 return -EINVAL;
438
439 s5k6aa->pclk_fmin = PCLK_FREQ_MIN;
440 s5k6aa->pclk_fmax = PCLK_FREQ_MAX;
441 s5k6aa->clk_fop = SYS_PLL_OUT_FREQ;
442
443 /* External input clock frequency in kHz */
444 ret = s5k6aa_write(c, REG_I_INCLK_FREQ_H, fmclk >> 16);
445 if (!ret)
446 ret = s5k6aa_write(c, REG_I_INCLK_FREQ_L, fmclk & 0xFFFF);
447 if (!ret)
448 ret = s5k6aa_write(c, REG_I_USE_NPVI_CLOCKS, 1);
449 /* Internal PLL frequency */
450 if (!ret)
451 ret = s5k6aa_write(c, REG_I_OPCLK_4KHZ(0), s5k6aa->clk_fop);
452 if (!ret)
453 ret = s5k6aa_write(c, REG_I_MIN_OUTRATE_4KHZ(0),
454 s5k6aa->pclk_fmin);
455 if (!ret)
456 ret = s5k6aa_write(c, REG_I_MAX_OUTRATE_4KHZ(0),
457 s5k6aa->pclk_fmax);
458 if (!ret)
459 ret = s5k6aa_write(c, REG_I_INIT_PARAMS_UPDATED, 1);
460 if (!ret)
461 ret = s5k6aa_read(c, REG_I_ERROR_INFO, &status);
462
463 return ret ? ret : (status ? -EINVAL : 0);
464 }
465
466 /* Set horizontal and vertical image flipping */
467 static int s5k6aa_set_mirror(struct s5k6aa *s5k6aa, int horiz_flip)
468 {
469 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
470 int index = s5k6aa->preset->index;
471
472 unsigned int vflip = s5k6aa->ctrls.vflip->val ^ s5k6aa->inv_vflip;
473 unsigned int flip = (horiz_flip ^ s5k6aa->inv_hflip) | (vflip << 1);
474
475 return s5k6aa_write(client, REG_P_PREV_MIRROR(index), flip);
476 }
477
478 /* Configure auto/manual white balance and R/G/B gains */
479 static int s5k6aa_set_awb(struct s5k6aa *s5k6aa, int awb)
480 {
481 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
482 struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
483 u16 reg;
484
485 int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, &reg);
486
487 if (!ret && !awb) {
488 ret = s5k6aa_write(c, REG_SF_RGAIN, ctrls->gain_red->val);
489 if (!ret)
490 ret = s5k6aa_write(c, REG_SF_RGAIN_CHG, 1);
491 if (ret)
492 return ret;
493
494 ret = s5k6aa_write(c, REG_SF_GGAIN, ctrls->gain_green->val);
495 if (!ret)
496 ret = s5k6aa_write(c, REG_SF_GGAIN_CHG, 1);
497 if (ret)
498 return ret;
499
500 ret = s5k6aa_write(c, REG_SF_BGAIN, ctrls->gain_blue->val);
501 if (!ret)
502 ret = s5k6aa_write(c, REG_SF_BGAIN_CHG, 1);
503 }
504 if (!ret) {
505 reg = awb ? reg | AALG_WB_EN_MASK : reg & ~AALG_WB_EN_MASK;
506 ret = s5k6aa_write(c, REG_DBG_AUTOALG_EN, reg);
507 }
508
509 return ret;
510 }
511
512 /* Program FW with exposure time, 'exposure' in us units */
513 static int s5k6aa_set_user_exposure(struct i2c_client *client, int exposure)
514 {
515 unsigned int time = exposure / 10;
516
517 int ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_L, time & 0xffff);
518 if (!ret)
519 ret = s5k6aa_write(client, REG_SF_USR_EXPOSURE_H, time >> 16);
520 if (ret)
521 return ret;
522 return s5k6aa_write(client, REG_SF_USR_EXPOSURE_CHG, 1);
523 }
524
525 static int s5k6aa_set_user_gain(struct i2c_client *client, int gain)
526 {
527 int ret = s5k6aa_write(client, REG_SF_USR_TOT_GAIN, gain);
528 if (ret)
529 return ret;
530 return s5k6aa_write(client, REG_SF_USR_TOT_GAIN_CHG, 1);
531 }
532
533 /* Set auto/manual exposure and total gain */
534 static int s5k6aa_set_auto_exposure(struct s5k6aa *s5k6aa, int value)
535 {
536 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
537 unsigned int exp_time = s5k6aa->ctrls.exposure->val;
538 u16 auto_alg;
539
540 int ret = s5k6aa_read(c, REG_DBG_AUTOALG_EN, &auto_alg);
541 if (ret)
542 return ret;
543
544 v4l2_dbg(1, debug, c, "man_exp: %d, auto_exp: %d, a_alg: 0x%x\n",
545 exp_time, value, auto_alg);
546
547 if (value == V4L2_EXPOSURE_AUTO) {
548 auto_alg |= AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK;
549 } else {
550 ret = s5k6aa_set_user_exposure(c, exp_time);
551 if (ret)
552 return ret;
553 ret = s5k6aa_set_user_gain(c, s5k6aa->ctrls.gain->val);
554 if (ret)
555 return ret;
556 auto_alg &= ~(AALG_AE_EN_MASK | AALG_DIVLEI_EN_MASK);
557 }
558
559 return s5k6aa_write(c, REG_DBG_AUTOALG_EN, auto_alg);
560 }
561
562 static int s5k6aa_set_anti_flicker(struct s5k6aa *s5k6aa, int value)
563 {
564 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
565 u16 auto_alg;
566 int ret;
567
568 ret = s5k6aa_read(client, REG_DBG_AUTOALG_EN, &auto_alg);
569 if (ret)
570 return ret;
571
572 if (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) {
573 auto_alg |= AALG_FLICKER_EN_MASK;
574 } else {
575 auto_alg &= ~AALG_FLICKER_EN_MASK;
576 /* The V4L2_CID_LINE_FREQUENCY control values match
577 * the register values */
578 ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT, value);
579 if (ret)
580 return ret;
581 ret = s5k6aa_write(client, REG_SF_FLICKER_QUANT_CHG, 1);
582 if (ret)
583 return ret;
584 }
585
586 return s5k6aa_write(client, REG_DBG_AUTOALG_EN, auto_alg);
587 }
588
589 static int s5k6aa_set_colorfx(struct s5k6aa *s5k6aa, int val)
590 {
591 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
592 static const struct v4l2_control colorfx[] = {
593 { V4L2_COLORFX_NONE, 0 },
594 { V4L2_COLORFX_BW, 1 },
595 { V4L2_COLORFX_NEGATIVE, 2 },
596 { V4L2_COLORFX_SEPIA, 3 },
597 { V4L2_COLORFX_SKY_BLUE, 4 },
598 { V4L2_COLORFX_SKETCH, 5 },
599 };
600 int i;
601
602 for (i = 0; i < ARRAY_SIZE(colorfx); i++) {
603 if (colorfx[i].id == val)
604 return s5k6aa_write(client, REG_G_SPEC_EFFECTS,
605 colorfx[i].value);
606 }
607 return -EINVAL;
608 }
609
610 static int s5k6aa_preview_config_status(struct i2c_client *client)
611 {
612 u16 error = 0;
613 int ret = s5k6aa_read(client, REG_G_PREV_CFG_ERROR, &error);
614
615 v4l2_dbg(1, debug, client, "error: 0x%x (%d)\n", error, ret);
616 return ret ? ret : (error ? -EINVAL : 0);
617 }
618
619 static int s5k6aa_get_pixfmt_index(struct s5k6aa *s5k6aa,
620 struct v4l2_mbus_framefmt *mf)
621 {
622 unsigned int i;
623
624 for (i = 0; i < ARRAY_SIZE(s5k6aa_formats); i++)
625 if (mf->colorspace == s5k6aa_formats[i].colorspace &&
626 mf->code == s5k6aa_formats[i].code)
627 return i;
628 return 0;
629 }
630
631 static int s5k6aa_set_output_framefmt(struct s5k6aa *s5k6aa,
632 struct s5k6aa_preset *preset)
633 {
634 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
635 int fmt_index = s5k6aa_get_pixfmt_index(s5k6aa, &preset->mbus_fmt);
636 int ret;
637
638 ret = s5k6aa_write(client, REG_P_OUT_WIDTH(preset->index),
639 preset->mbus_fmt.width);
640 if (!ret)
641 ret = s5k6aa_write(client, REG_P_OUT_HEIGHT(preset->index),
642 preset->mbus_fmt.height);
643 if (!ret)
644 ret = s5k6aa_write(client, REG_P_FMT(preset->index),
645 s5k6aa_formats[fmt_index].reg_p_fmt);
646 return ret;
647 }
648
649 static int s5k6aa_set_input_params(struct s5k6aa *s5k6aa)
650 {
651 struct i2c_client *c = v4l2_get_subdevdata(&s5k6aa->sd);
652 struct v4l2_rect *r = &s5k6aa->ccd_rect;
653 int ret;
654
655 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_WIDTH, r->width);
656 if (!ret)
657 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_HEIGHT, r->height);
658 if (!ret)
659 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_XOFFS, r->left);
660 if (!ret)
661 ret = s5k6aa_write(c, REG_G_PREVZOOM_IN_YOFFS, r->top);
662 if (!ret)
663 ret = s5k6aa_write(c, REG_G_INPUTS_CHANGE_REQ, 1);
664 if (!ret)
665 s5k6aa->apply_crop = 0;
666
667 return ret;
668 }
669
670 /**
671 * s5k6aa_configure_video_bus - configure the video output interface
672 * @bus_type: video bus type: parallel or MIPI-CSI
673 * @nlanes: number of MIPI lanes to be used (MIPI-CSI only)
674 *
675 * Note: Only parallel bus operation has been tested.
676 */
677 static int s5k6aa_configure_video_bus(struct s5k6aa *s5k6aa,
678 enum v4l2_mbus_type bus_type, int nlanes)
679 {
680 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
681 u16 cfg = 0;
682 int ret;
683
684 /*
685 * TODO: The sensor is supposed to support BT.601 and BT.656
686 * but there is nothing indicating how to switch between both
687 * in the datasheet. For now default BT.601 interface is assumed.
688 */
689 if (bus_type == V4L2_MBUS_CSI2)
690 cfg = nlanes;
691 else if (bus_type != V4L2_MBUS_PARALLEL)
692 return -EINVAL;
693
694 ret = s5k6aa_write(client, REG_OIF_EN_MIPI_LANES, cfg);
695 if (ret)
696 return ret;
697 return s5k6aa_write(client, REG_OIF_CFG_CHG, 1);
698 }
699
700 /* This function should be called when switching to new user configuration set*/
701 static int s5k6aa_new_config_sync(struct i2c_client *client, int timeout,
702 int cid)
703 {
704 unsigned long end = jiffies + msecs_to_jiffies(timeout);
705 u16 reg = 1;
706 int ret;
707
708 ret = s5k6aa_write(client, REG_G_ACTIVE_PREV_CFG, cid);
709 if (!ret)
710 ret = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
711 if (!ret)
712 ret = s5k6aa_write(client, REG_G_NEW_CFG_SYNC, 1);
713 if (timeout == 0)
714 return ret;
715
716 while (ret >= 0 && time_is_after_jiffies(end)) {
717 ret = s5k6aa_read(client, REG_G_NEW_CFG_SYNC, &reg);
718 if (!reg)
719 return 0;
720 usleep_range(1000, 5000);
721 }
722 return ret ? ret : -ETIMEDOUT;
723 }
724
725 /**
726 * s5k6aa_set_prev_config - write user preview register set
727 *
728 * Configure output resolution and color fromat, pixel clock
729 * frequency range, device frame rate type and frame period range.
730 */
731 static int s5k6aa_set_prev_config(struct s5k6aa *s5k6aa,
732 struct s5k6aa_preset *preset)
733 {
734 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
735 int idx = preset->index;
736 u16 frame_rate_q;
737 int ret;
738
739 if (s5k6aa->fiv->reg_fr_time >= S5K6AA_MAX_HIGHRES_FR_TIME)
740 frame_rate_q = FR_RATE_Q_BEST_FRRATE;
741 else
742 frame_rate_q = FR_RATE_Q_BEST_QUALITY;
743
744 ret = s5k6aa_set_output_framefmt(s5k6aa, preset);
745 if (!ret)
746 ret = s5k6aa_write(client, REG_P_MAX_OUT_RATE(idx),
747 s5k6aa->pclk_fmax);
748 if (!ret)
749 ret = s5k6aa_write(client, REG_P_MIN_OUT_RATE(idx),
750 s5k6aa->pclk_fmin);
751 if (!ret)
752 ret = s5k6aa_write(client, REG_P_CLK_INDEX(idx),
753 preset->clk_id);
754 if (!ret)
755 ret = s5k6aa_write(client, REG_P_FR_RATE_TYPE(idx),
756 FR_RATE_DYNAMIC);
757 if (!ret)
758 ret = s5k6aa_write(client, REG_P_FR_RATE_Q_TYPE(idx),
759 frame_rate_q);
760 if (!ret)
761 ret = s5k6aa_write(client, REG_P_MAX_FR_TIME(idx),
762 s5k6aa->fiv->reg_fr_time + 33);
763 if (!ret)
764 ret = s5k6aa_write(client, REG_P_MIN_FR_TIME(idx),
765 s5k6aa->fiv->reg_fr_time - 33);
766 if (!ret)
767 ret = s5k6aa_new_config_sync(client, 250, idx);
768 if (!ret)
769 ret = s5k6aa_preview_config_status(client);
770 if (!ret)
771 s5k6aa->apply_cfg = 0;
772
773 v4l2_dbg(1, debug, client, "Frame interval: %d +/- 3.3ms. (%d)\n",
774 s5k6aa->fiv->reg_fr_time, ret);
775 return ret;
776 }
777
778 /**
779 * s5k6aa_initialize_isp - basic ISP MCU initialization
780 *
781 * Configure AHB addresses for registers read/write; configure PLLs for
782 * required output pixel clock. The ISP power supply needs to be already
783 * enabled, with an optional H/W reset.
784 * Locking: called with s5k6aa.lock mutex held.
785 */
786 static int s5k6aa_initialize_isp(struct v4l2_subdev *sd)
787 {
788 struct i2c_client *client = v4l2_get_subdevdata(sd);
789 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
790 int ret;
791
792 s5k6aa->apply_crop = 1;
793 s5k6aa->apply_cfg = 1;
794 msleep(100);
795
796 ret = s5k6aa_set_ahb_address(client);
797 if (ret)
798 return ret;
799 ret = s5k6aa_configure_video_bus(s5k6aa, s5k6aa->bus_type,
800 s5k6aa->mipi_lanes);
801 if (ret)
802 return ret;
803 ret = s5k6aa_write_array(sd, s5k6aa_analog_config);
804 if (ret)
805 return ret;
806 msleep(20);
807
808 return s5k6aa_configure_pixel_clocks(s5k6aa);
809 }
810
811 static int s5k6aa_gpio_set_value(struct s5k6aa *priv, int id, u32 val)
812 {
813 if (!gpio_is_valid(priv->gpio[id].gpio))
814 return 0;
815 gpio_set_value(priv->gpio[id].gpio, !!val);
816 return 1;
817 }
818
819 static int s5k6aa_gpio_assert(struct s5k6aa *priv, int id)
820 {
821 return s5k6aa_gpio_set_value(priv, id, priv->gpio[id].level);
822 }
823
824 static int s5k6aa_gpio_deassert(struct s5k6aa *priv, int id)
825 {
826 return s5k6aa_gpio_set_value(priv, id, !priv->gpio[id].level);
827 }
828
829 static int __s5k6aa_power_on(struct s5k6aa *s5k6aa)
830 {
831 int ret;
832
833 ret = regulator_bulk_enable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
834 if (ret)
835 return ret;
836 if (s5k6aa_gpio_deassert(s5k6aa, STBY))
837 usleep_range(150, 200);
838
839 if (s5k6aa->s_power)
840 ret = s5k6aa->s_power(1);
841 usleep_range(4000, 4000);
842
843 if (s5k6aa_gpio_deassert(s5k6aa, RST))
844 msleep(20);
845
846 return ret;
847 }
848
849 static int __s5k6aa_power_off(struct s5k6aa *s5k6aa)
850 {
851 int ret;
852
853 if (s5k6aa_gpio_assert(s5k6aa, RST))
854 usleep_range(100, 150);
855
856 if (s5k6aa->s_power) {
857 ret = s5k6aa->s_power(0);
858 if (ret)
859 return ret;
860 }
861 if (s5k6aa_gpio_assert(s5k6aa, STBY))
862 usleep_range(50, 100);
863 s5k6aa->streaming = 0;
864
865 return regulator_bulk_disable(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
866 }
867
868 /*
869 * V4L2 subdev core and video operations
870 */
871 static int s5k6aa_set_power(struct v4l2_subdev *sd, int on)
872 {
873 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
874 int ret = 0;
875
876 mutex_lock(&s5k6aa->lock);
877
878 if (!on == s5k6aa->power) {
879 if (on) {
880 ret = __s5k6aa_power_on(s5k6aa);
881 if (!ret)
882 ret = s5k6aa_initialize_isp(sd);
883 } else {
884 ret = __s5k6aa_power_off(s5k6aa);
885 }
886
887 if (!ret)
888 s5k6aa->power += on ? 1 : -1;
889 }
890
891 mutex_unlock(&s5k6aa->lock);
892
893 if (!on || ret || s5k6aa->power != 1)
894 return ret;
895
896 return v4l2_ctrl_handler_setup(sd->ctrl_handler);
897 }
898
899 static int __s5k6aa_stream(struct s5k6aa *s5k6aa, int enable)
900 {
901 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
902 int ret = 0;
903
904 ret = s5k6aa_write(client, REG_G_ENABLE_PREV, enable);
905 if (!ret)
906 ret = s5k6aa_write(client, REG_G_ENABLE_PREV_CHG, 1);
907 if (!ret)
908 s5k6aa->streaming = enable;
909
910 return ret;
911 }
912
913 static int s5k6aa_s_stream(struct v4l2_subdev *sd, int on)
914 {
915 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
916 int ret = 0;
917
918 mutex_lock(&s5k6aa->lock);
919
920 if (s5k6aa->streaming == !on) {
921 if (!ret && s5k6aa->apply_cfg)
922 ret = s5k6aa_set_prev_config(s5k6aa, s5k6aa->preset);
923 if (s5k6aa->apply_crop)
924 ret = s5k6aa_set_input_params(s5k6aa);
925 if (!ret)
926 ret = __s5k6aa_stream(s5k6aa, !!on);
927 }
928 mutex_unlock(&s5k6aa->lock);
929
930 return ret;
931 }
932
933 static int s5k6aa_g_frame_interval(struct v4l2_subdev *sd,
934 struct v4l2_subdev_frame_interval *fi)
935 {
936 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
937
938 mutex_lock(&s5k6aa->lock);
939 fi->interval = s5k6aa->fiv->interval;
940 mutex_unlock(&s5k6aa->lock);
941
942 return 0;
943 }
944
945 static int __s5k6aa_set_frame_interval(struct s5k6aa *s5k6aa,
946 struct v4l2_subdev_frame_interval *fi)
947 {
948 struct v4l2_mbus_framefmt *mbus_fmt = &s5k6aa->preset->mbus_fmt;
949 const struct s5k6aa_interval *fiv = &s5k6aa_intervals[0];
950 unsigned int err, min_err = UINT_MAX;
951 unsigned int i, fr_time;
952
953 if (fi->interval.denominator == 0)
954 return -EINVAL;
955
956 fr_time = fi->interval.numerator * 10000 / fi->interval.denominator;
957
958 for (i = 0; i < ARRAY_SIZE(s5k6aa_intervals); i++) {
959 const struct s5k6aa_interval *iv = &s5k6aa_intervals[i];
960
961 if (mbus_fmt->width > iv->size.width ||
962 mbus_fmt->height > iv->size.height)
963 continue;
964
965 err = abs(iv->reg_fr_time - fr_time);
966 if (err < min_err) {
967 fiv = iv;
968 min_err = err;
969 }
970 }
971 s5k6aa->fiv = fiv;
972
973 v4l2_dbg(1, debug, &s5k6aa->sd, "Changed frame interval to %d us\n",
974 fiv->reg_fr_time * 100);
975 return 0;
976 }
977
978 static int s5k6aa_s_frame_interval(struct v4l2_subdev *sd,
979 struct v4l2_subdev_frame_interval *fi)
980 {
981 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
982 int ret;
983
984 v4l2_dbg(1, debug, sd, "Setting %d/%d frame interval\n",
985 fi->interval.numerator, fi->interval.denominator);
986
987 mutex_lock(&s5k6aa->lock);
988 ret = __s5k6aa_set_frame_interval(s5k6aa, fi);
989 s5k6aa->apply_cfg = 1;
990
991 mutex_unlock(&s5k6aa->lock);
992 return ret;
993 }
994
995 /*
996 * V4L2 subdev pad level and video operations
997 */
998 static int s5k6aa_enum_frame_interval(struct v4l2_subdev *sd,
999 struct v4l2_subdev_fh *fh,
1000 struct v4l2_subdev_frame_interval_enum *fie)
1001 {
1002 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1003 const struct s5k6aa_interval *fi;
1004 int ret = 0;
1005
1006 if (fie->index > ARRAY_SIZE(s5k6aa_intervals))
1007 return -EINVAL;
1008
1009 v4l_bound_align_image(&fie->width, S5K6AA_WIN_WIDTH_MIN,
1010 S5K6AA_WIN_WIDTH_MAX, 1,
1011 &fie->height, S5K6AA_WIN_HEIGHT_MIN,
1012 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1013
1014 mutex_lock(&s5k6aa->lock);
1015 fi = &s5k6aa_intervals[fie->index];
1016 if (fie->width > fi->size.width || fie->height > fi->size.height)
1017 ret = -EINVAL;
1018 else
1019 fie->interval = fi->interval;
1020 mutex_unlock(&s5k6aa->lock);
1021
1022 return ret;
1023 }
1024
1025 static int s5k6aa_enum_mbus_code(struct v4l2_subdev *sd,
1026 struct v4l2_subdev_fh *fh,
1027 struct v4l2_subdev_mbus_code_enum *code)
1028 {
1029 if (code->index >= ARRAY_SIZE(s5k6aa_formats))
1030 return -EINVAL;
1031
1032 code->code = s5k6aa_formats[code->index].code;
1033 return 0;
1034 }
1035
1036 static int s5k6aa_enum_frame_size(struct v4l2_subdev *sd,
1037 struct v4l2_subdev_fh *fh,
1038 struct v4l2_subdev_frame_size_enum *fse)
1039 {
1040 int i = ARRAY_SIZE(s5k6aa_formats);
1041
1042 if (fse->index > 0)
1043 return -EINVAL;
1044
1045 while (--i)
1046 if (fse->code == s5k6aa_formats[i].code)
1047 break;
1048
1049 fse->code = s5k6aa_formats[i].code;
1050 fse->min_width = S5K6AA_WIN_WIDTH_MIN;
1051 fse->max_width = S5K6AA_WIN_WIDTH_MAX;
1052 fse->max_height = S5K6AA_WIN_HEIGHT_MIN;
1053 fse->min_height = S5K6AA_WIN_HEIGHT_MAX;
1054
1055 return 0;
1056 }
1057
1058 static struct v4l2_rect *
1059 __s5k6aa_get_crop_rect(struct s5k6aa *s5k6aa, struct v4l2_subdev_fh *fh,
1060 enum v4l2_subdev_format_whence which)
1061 {
1062 if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
1063 return &s5k6aa->ccd_rect;
1064 if (which == V4L2_SUBDEV_FORMAT_TRY)
1065 return v4l2_subdev_get_try_crop(fh, 0);
1066
1067 return NULL;
1068 }
1069
1070 static void s5k6aa_try_format(struct s5k6aa *s5k6aa,
1071 struct v4l2_mbus_framefmt *mf)
1072 {
1073 unsigned int index;
1074
1075 v4l_bound_align_image(&mf->width, S5K6AA_WIN_WIDTH_MIN,
1076 S5K6AA_WIN_WIDTH_MAX, 1,
1077 &mf->height, S5K6AA_WIN_HEIGHT_MIN,
1078 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1079
1080 if (mf->colorspace != V4L2_COLORSPACE_JPEG &&
1081 mf->colorspace != V4L2_COLORSPACE_REC709)
1082 mf->colorspace = V4L2_COLORSPACE_JPEG;
1083
1084 index = s5k6aa_get_pixfmt_index(s5k6aa, mf);
1085
1086 mf->colorspace = s5k6aa_formats[index].colorspace;
1087 mf->code = s5k6aa_formats[index].code;
1088 mf->field = V4L2_FIELD_NONE;
1089 }
1090
1091 static int s5k6aa_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1092 struct v4l2_subdev_format *fmt)
1093 {
1094 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1095 struct v4l2_mbus_framefmt *mf;
1096
1097 memset(fmt->reserved, 0, sizeof(fmt->reserved));
1098
1099 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1100 mf = v4l2_subdev_get_try_format(fh, 0);
1101 fmt->format = *mf;
1102 return 0;
1103 }
1104
1105 mutex_lock(&s5k6aa->lock);
1106 fmt->format = s5k6aa->preset->mbus_fmt;
1107 mutex_unlock(&s5k6aa->lock);
1108
1109 return 0;
1110 }
1111
1112 static int s5k6aa_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1113 struct v4l2_subdev_format *fmt)
1114 {
1115 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1116 struct s5k6aa_preset *preset = s5k6aa->preset;
1117 struct v4l2_mbus_framefmt *mf;
1118 struct v4l2_rect *crop;
1119 int ret = 0;
1120
1121 mutex_lock(&s5k6aa->lock);
1122 s5k6aa_try_format(s5k6aa, &fmt->format);
1123
1124 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1125 mf = v4l2_subdev_get_try_format(fh, fmt->pad);
1126 crop = v4l2_subdev_get_try_crop(fh, 0);
1127 } else {
1128 if (s5k6aa->streaming) {
1129 ret = -EBUSY;
1130 } else {
1131 mf = &preset->mbus_fmt;
1132 crop = &s5k6aa->ccd_rect;
1133 s5k6aa->apply_cfg = 1;
1134 }
1135 }
1136
1137 if (ret == 0) {
1138 struct v4l2_subdev_frame_interval fiv = {
1139 .interval = {0, 1}
1140 };
1141
1142 *mf = fmt->format;
1143 /*
1144 * Make sure the crop window is valid, i.e. its size is
1145 * greater than the output window, as the ISP supports
1146 * only down-scaling.
1147 */
1148 crop->width = clamp_t(unsigned int, crop->width, mf->width,
1149 S5K6AA_WIN_WIDTH_MAX);
1150 crop->height = clamp_t(unsigned int, crop->height, mf->height,
1151 S5K6AA_WIN_HEIGHT_MAX);
1152 crop->left = clamp_t(unsigned int, crop->left, 0,
1153 S5K6AA_WIN_WIDTH_MAX - crop->width);
1154 crop->top = clamp_t(unsigned int, crop->top, 0,
1155 S5K6AA_WIN_HEIGHT_MAX - crop->height);
1156
1157 /* Reset to minimum possible frame interval */
1158 ret = __s5k6aa_set_frame_interval(s5k6aa, &fiv);
1159 }
1160 mutex_unlock(&s5k6aa->lock);
1161
1162 return ret;
1163 }
1164
1165 static int s5k6aa_get_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1166 struct v4l2_subdev_crop *crop)
1167 {
1168 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1169 struct v4l2_rect *rect;
1170
1171 memset(crop->reserved, 0, sizeof(crop->reserved));
1172 mutex_lock(&s5k6aa->lock);
1173
1174 rect = __s5k6aa_get_crop_rect(s5k6aa, fh, crop->which);
1175 if (rect)
1176 crop->rect = *rect;
1177
1178 mutex_unlock(&s5k6aa->lock);
1179
1180 v4l2_dbg(1, debug, sd, "Current crop rectangle: (%d,%d)/%dx%d\n",
1181 rect->left, rect->top, rect->width, rect->height);
1182
1183 return 0;
1184 }
1185
1186 static int s5k6aa_set_crop(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
1187 struct v4l2_subdev_crop *crop)
1188 {
1189 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1190 struct v4l2_mbus_framefmt *mf;
1191 unsigned int max_x, max_y;
1192 struct v4l2_rect *crop_r;
1193
1194 mutex_lock(&s5k6aa->lock);
1195 crop_r = __s5k6aa_get_crop_rect(s5k6aa, fh, crop->which);
1196
1197 if (crop->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
1198 mf = &s5k6aa->preset->mbus_fmt;
1199 s5k6aa->apply_crop = 1;
1200 } else {
1201 mf = v4l2_subdev_get_try_format(fh, 0);
1202 }
1203 v4l_bound_align_image(&crop->rect.width, mf->width,
1204 S5K6AA_WIN_WIDTH_MAX, 1,
1205 &crop->rect.height, mf->height,
1206 S5K6AA_WIN_HEIGHT_MAX, 1, 0);
1207
1208 max_x = (S5K6AA_WIN_WIDTH_MAX - crop->rect.width) & ~1;
1209 max_y = (S5K6AA_WIN_HEIGHT_MAX - crop->rect.height) & ~1;
1210
1211 crop->rect.left = clamp_t(unsigned int, crop->rect.left, 0, max_x);
1212 crop->rect.top = clamp_t(unsigned int, crop->rect.top, 0, max_y);
1213
1214 *crop_r = crop->rect;
1215
1216 mutex_unlock(&s5k6aa->lock);
1217
1218 v4l2_dbg(1, debug, sd, "Set crop rectangle: (%d,%d)/%dx%d\n",
1219 crop_r->left, crop_r->top, crop_r->width, crop_r->height);
1220
1221 return 0;
1222 }
1223
1224 static const struct v4l2_subdev_pad_ops s5k6aa_pad_ops = {
1225 .enum_mbus_code = s5k6aa_enum_mbus_code,
1226 .enum_frame_size = s5k6aa_enum_frame_size,
1227 .enum_frame_interval = s5k6aa_enum_frame_interval,
1228 .get_fmt = s5k6aa_get_fmt,
1229 .set_fmt = s5k6aa_set_fmt,
1230 .get_crop = s5k6aa_get_crop,
1231 .set_crop = s5k6aa_set_crop,
1232 };
1233
1234 static const struct v4l2_subdev_video_ops s5k6aa_video_ops = {
1235 .g_frame_interval = s5k6aa_g_frame_interval,
1236 .s_frame_interval = s5k6aa_s_frame_interval,
1237 .s_stream = s5k6aa_s_stream,
1238 };
1239
1240 /*
1241 * V4L2 subdev controls
1242 */
1243
1244 static int s5k6aa_s_ctrl(struct v4l2_ctrl *ctrl)
1245 {
1246 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
1247 struct i2c_client *client = v4l2_get_subdevdata(sd);
1248 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1249 int idx, err = 0;
1250
1251 v4l2_dbg(1, debug, sd, "ctrl: 0x%x, value: %d\n", ctrl->id, ctrl->val);
1252
1253 mutex_lock(&s5k6aa->lock);
1254 /*
1255 * If the device is not powered up by the host driver do
1256 * not apply any controls to H/W at this time. Instead
1257 * the controls will be restored right after power-up.
1258 */
1259 if (s5k6aa->power == 0)
1260 goto unlock;
1261 idx = s5k6aa->preset->index;
1262
1263 switch (ctrl->id) {
1264 case V4L2_CID_AUTO_WHITE_BALANCE:
1265 err = s5k6aa_set_awb(s5k6aa, ctrl->val);
1266 break;
1267
1268 case V4L2_CID_BRIGHTNESS:
1269 err = s5k6aa_write(client, REG_USER_BRIGHTNESS, ctrl->val);
1270 break;
1271
1272 case V4L2_CID_COLORFX:
1273 err = s5k6aa_set_colorfx(s5k6aa, ctrl->val);
1274 break;
1275
1276 case V4L2_CID_CONTRAST:
1277 err = s5k6aa_write(client, REG_USER_CONTRAST, ctrl->val);
1278 break;
1279
1280 case V4L2_CID_EXPOSURE_AUTO:
1281 err = s5k6aa_set_auto_exposure(s5k6aa, ctrl->val);
1282 break;
1283
1284 case V4L2_CID_HFLIP:
1285 err = s5k6aa_set_mirror(s5k6aa, ctrl->val);
1286 if (err)
1287 break;
1288 err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
1289 break;
1290
1291 case V4L2_CID_POWER_LINE_FREQUENCY:
1292 err = s5k6aa_set_anti_flicker(s5k6aa, ctrl->val);
1293 break;
1294
1295 case V4L2_CID_SATURATION:
1296 err = s5k6aa_write(client, REG_USER_SATURATION, ctrl->val);
1297 break;
1298
1299 case V4L2_CID_SHARPNESS:
1300 err = s5k6aa_write(client, REG_USER_SHARPBLUR, ctrl->val);
1301 break;
1302
1303 case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
1304 err = s5k6aa_write(client, REG_P_COLORTEMP(idx), ctrl->val);
1305 if (err)
1306 break;
1307 err = s5k6aa_write(client, REG_G_PREV_CFG_CHG, 1);
1308 break;
1309 }
1310 unlock:
1311 mutex_unlock(&s5k6aa->lock);
1312 return err;
1313 }
1314
1315 static const struct v4l2_ctrl_ops s5k6aa_ctrl_ops = {
1316 .s_ctrl = s5k6aa_s_ctrl,
1317 };
1318
1319 static int s5k6aa_log_status(struct v4l2_subdev *sd)
1320 {
1321 v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
1322 return 0;
1323 }
1324
1325 #define V4L2_CID_RED_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1001)
1326 #define V4L2_CID_GREEN_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1002)
1327 #define V4L2_CID_BLUE_GAIN (V4L2_CTRL_CLASS_CAMERA | 0x1003)
1328
1329 static const struct v4l2_ctrl_config s5k6aa_ctrls[] = {
1330 {
1331 .ops = &s5k6aa_ctrl_ops,
1332 .id = V4L2_CID_RED_GAIN,
1333 .type = V4L2_CTRL_TYPE_INTEGER,
1334 .name = "Gain, Red",
1335 .min = 0,
1336 .max = 256,
1337 .def = 127,
1338 .step = 1,
1339 }, {
1340 .ops = &s5k6aa_ctrl_ops,
1341 .id = V4L2_CID_GREEN_GAIN,
1342 .type = V4L2_CTRL_TYPE_INTEGER,
1343 .name = "Gain, Green",
1344 .min = 0,
1345 .max = 256,
1346 .def = 127,
1347 .step = 1,
1348 }, {
1349 .ops = &s5k6aa_ctrl_ops,
1350 .id = V4L2_CID_BLUE_GAIN,
1351 .type = V4L2_CTRL_TYPE_INTEGER,
1352 .name = "Gain, Blue",
1353 .min = 0,
1354 .max = 256,
1355 .def = 127,
1356 .step = 1,
1357 },
1358 };
1359
1360 static int s5k6aa_initialize_ctrls(struct s5k6aa *s5k6aa)
1361 {
1362 const struct v4l2_ctrl_ops *ops = &s5k6aa_ctrl_ops;
1363 struct s5k6aa_ctrls *ctrls = &s5k6aa->ctrls;
1364 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
1365
1366 int ret = v4l2_ctrl_handler_init(hdl, 16);
1367 if (ret)
1368 return ret;
1369 /* Auto white balance cluster */
1370 ctrls->awb = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE,
1371 0, 1, 1, 1);
1372 ctrls->gain_red = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[0], NULL);
1373 ctrls->gain_green = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[1], NULL);
1374 ctrls->gain_blue = v4l2_ctrl_new_custom(hdl, &s5k6aa_ctrls[2], NULL);
1375 v4l2_ctrl_auto_cluster(4, &ctrls->awb, 0, false);
1376
1377 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
1378 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
1379 v4l2_ctrl_cluster(2, &ctrls->hflip);
1380
1381 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
1382 V4L2_CID_EXPOSURE_AUTO,
1383 V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
1384 /* Exposure time: x 1 us */
1385 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
1386 0, 6000000U, 1, 100000U);
1387 /* Total gain: 256 <=> 1x */
1388 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
1389 0, 256, 1, 256);
1390 v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 0, false);
1391
1392 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_POWER_LINE_FREQUENCY,
1393 V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
1394 V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
1395
1396 v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
1397 V4L2_COLORFX_SKY_BLUE, ~0x6f, V4L2_COLORFX_NONE);
1398
1399 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_WHITE_BALANCE_TEMPERATURE,
1400 0, 256, 1, 0);
1401
1402 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0);
1403 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -127, 127, 1, 0);
1404 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0);
1405 v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -127, 127, 1, 0);
1406
1407 if (hdl->error) {
1408 ret = hdl->error;
1409 v4l2_ctrl_handler_free(hdl);
1410 return ret;
1411 }
1412
1413 s5k6aa->sd.ctrl_handler = hdl;
1414 return 0;
1415 }
1416
1417 /*
1418 * V4L2 subdev internal operations
1419 */
1420 static int s5k6aa_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1421 {
1422 struct v4l2_mbus_framefmt *format = v4l2_subdev_get_try_format(fh, 0);
1423 struct v4l2_rect *crop = v4l2_subdev_get_try_crop(fh, 0);
1424
1425 format->colorspace = s5k6aa_formats[0].colorspace;
1426 format->code = s5k6aa_formats[0].code;
1427 format->width = S5K6AA_OUT_WIDTH_DEF;
1428 format->height = S5K6AA_OUT_HEIGHT_DEF;
1429 format->field = V4L2_FIELD_NONE;
1430
1431 crop->width = S5K6AA_WIN_WIDTH_MAX;
1432 crop->height = S5K6AA_WIN_HEIGHT_MAX;
1433 crop->left = 0;
1434 crop->top = 0;
1435
1436 return 0;
1437 }
1438
1439 int s5k6aa_check_fw_revision(struct s5k6aa *s5k6aa)
1440 {
1441 struct i2c_client *client = v4l2_get_subdevdata(&s5k6aa->sd);
1442 u16 api_ver = 0, fw_rev = 0;
1443
1444 int ret = s5k6aa_set_ahb_address(client);
1445
1446 if (!ret)
1447 ret = s5k6aa_read(client, REG_FW_APIVER, &api_ver);
1448 if (!ret)
1449 ret = s5k6aa_read(client, REG_FW_REVISION, &fw_rev);
1450 if (ret) {
1451 v4l2_err(&s5k6aa->sd, "FW revision check failed!\n");
1452 return ret;
1453 }
1454
1455 v4l2_info(&s5k6aa->sd, "FW API ver.: 0x%X, FW rev.: 0x%X\n",
1456 api_ver, fw_rev);
1457
1458 return api_ver == S5K6AAFX_FW_APIVER ? 0 : -ENODEV;
1459 }
1460
1461 static int s5k6aa_registered(struct v4l2_subdev *sd)
1462 {
1463 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1464 int ret;
1465
1466 mutex_lock(&s5k6aa->lock);
1467 ret = __s5k6aa_power_on(s5k6aa);
1468 if (!ret) {
1469 msleep(100);
1470 ret = s5k6aa_check_fw_revision(s5k6aa);
1471 __s5k6aa_power_off(s5k6aa);
1472 }
1473 mutex_unlock(&s5k6aa->lock);
1474
1475 return ret;
1476 }
1477
1478 static const struct v4l2_subdev_internal_ops s5k6aa_subdev_internal_ops = {
1479 .registered = s5k6aa_registered,
1480 .open = s5k6aa_open,
1481 };
1482
1483 static const struct v4l2_subdev_core_ops s5k6aa_core_ops = {
1484 .s_power = s5k6aa_set_power,
1485 .log_status = s5k6aa_log_status,
1486 };
1487
1488 static const struct v4l2_subdev_ops s5k6aa_subdev_ops = {
1489 .core = &s5k6aa_core_ops,
1490 .pad = &s5k6aa_pad_ops,
1491 .video = &s5k6aa_video_ops,
1492 };
1493
1494 /*
1495 * GPIO setup
1496 */
1497 static int s5k6aa_configure_gpio(int nr, int val, const char *name)
1498 {
1499 unsigned long flags = val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
1500 int ret;
1501
1502 if (!gpio_is_valid(nr))
1503 return 0;
1504 ret = gpio_request_one(nr, flags, name);
1505 if (!ret)
1506 gpio_export(nr, 0);
1507 return ret;
1508 }
1509
1510 static void s5k6aa_free_gpios(struct s5k6aa *s5k6aa)
1511 {
1512 int i;
1513
1514 for (i = 0; i < ARRAY_SIZE(s5k6aa->gpio); i++) {
1515 if (!gpio_is_valid(s5k6aa->gpio[i].gpio))
1516 continue;
1517 gpio_free(s5k6aa->gpio[i].gpio);
1518 s5k6aa->gpio[i].gpio = -EINVAL;
1519 }
1520 }
1521
1522 static int s5k6aa_configure_gpios(struct s5k6aa *s5k6aa,
1523 const struct s5k6aa_platform_data *pdata)
1524 {
1525 const struct s5k6aa_gpio *gpio = &pdata->gpio_stby;
1526 int ret;
1527
1528 s5k6aa->gpio[STBY].gpio = -EINVAL;
1529 s5k6aa->gpio[RST].gpio = -EINVAL;
1530
1531 ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_STBY");
1532 if (ret) {
1533 s5k6aa_free_gpios(s5k6aa);
1534 return ret;
1535 }
1536 s5k6aa->gpio[STBY] = *gpio;
1537 if (gpio_is_valid(gpio->gpio))
1538 gpio_set_value(gpio->gpio, 0);
1539
1540 gpio = &pdata->gpio_reset;
1541 ret = s5k6aa_configure_gpio(gpio->gpio, gpio->level, "S5K6AA_RST");
1542 if (ret) {
1543 s5k6aa_free_gpios(s5k6aa);
1544 return ret;
1545 }
1546 s5k6aa->gpio[RST] = *gpio;
1547 if (gpio_is_valid(gpio->gpio))
1548 gpio_set_value(gpio->gpio, 0);
1549
1550 return 0;
1551 }
1552
1553 static int s5k6aa_probe(struct i2c_client *client,
1554 const struct i2c_device_id *id)
1555 {
1556 const struct s5k6aa_platform_data *pdata = client->dev.platform_data;
1557 struct v4l2_subdev *sd;
1558 struct s5k6aa *s5k6aa;
1559 int i, ret;
1560
1561 if (pdata == NULL) {
1562 dev_err(&client->dev, "Platform data not specified\n");
1563 return -EINVAL;
1564 }
1565
1566 if (pdata->mclk_frequency == 0) {
1567 dev_err(&client->dev, "MCLK frequency not specified\n");
1568 return -EINVAL;
1569 }
1570
1571 s5k6aa = kzalloc(sizeof(*s5k6aa), GFP_KERNEL);
1572 if (!s5k6aa)
1573 return -ENOMEM;
1574
1575 mutex_init(&s5k6aa->lock);
1576
1577 s5k6aa->mclk_frequency = pdata->mclk_frequency;
1578 s5k6aa->bus_type = pdata->bus_type;
1579 s5k6aa->mipi_lanes = pdata->nlanes;
1580 s5k6aa->s_power = pdata->set_power;
1581 s5k6aa->inv_hflip = pdata->horiz_flip;
1582 s5k6aa->inv_vflip = pdata->vert_flip;
1583
1584 sd = &s5k6aa->sd;
1585 strlcpy(sd->name, DRIVER_NAME, sizeof(sd->name));
1586 v4l2_i2c_subdev_init(sd, client, &s5k6aa_subdev_ops);
1587
1588 sd->internal_ops = &s5k6aa_subdev_internal_ops;
1589 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1590
1591 s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE;
1592 sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
1593 ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad, 0);
1594 if (ret)
1595 goto out_err1;
1596
1597 ret = s5k6aa_configure_gpios(s5k6aa, pdata);
1598 if (ret)
1599 goto out_err2;
1600
1601 for (i = 0; i < S5K6AA_NUM_SUPPLIES; i++)
1602 s5k6aa->supplies[i].supply = s5k6aa_supply_names[i];
1603
1604 ret = regulator_bulk_get(&client->dev, S5K6AA_NUM_SUPPLIES,
1605 s5k6aa->supplies);
1606 if (ret) {
1607 dev_err(&client->dev, "Failed to get regulators\n");
1608 goto out_err3;
1609 }
1610
1611 ret = s5k6aa_initialize_ctrls(s5k6aa);
1612 if (ret)
1613 goto out_err4;
1614
1615 s5k6aa_presets_data_init(s5k6aa);
1616
1617 s5k6aa->ccd_rect.width = S5K6AA_WIN_WIDTH_MAX;
1618 s5k6aa->ccd_rect.height = S5K6AA_WIN_HEIGHT_MAX;
1619 s5k6aa->ccd_rect.left = 0;
1620 s5k6aa->ccd_rect.top = 0;
1621
1622 return 0;
1623
1624 out_err4:
1625 regulator_bulk_free(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
1626 out_err3:
1627 s5k6aa_free_gpios(s5k6aa);
1628 out_err2:
1629 media_entity_cleanup(&s5k6aa->sd.entity);
1630 out_err1:
1631 kfree(s5k6aa);
1632 return ret;
1633 }
1634
1635 static int s5k6aa_remove(struct i2c_client *client)
1636 {
1637 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1638 struct s5k6aa *s5k6aa = to_s5k6aa(sd);
1639
1640 v4l2_device_unregister_subdev(sd);
1641 v4l2_ctrl_handler_free(sd->ctrl_handler);
1642 media_entity_cleanup(&sd->entity);
1643 regulator_bulk_free(S5K6AA_NUM_SUPPLIES, s5k6aa->supplies);
1644 s5k6aa_free_gpios(s5k6aa);
1645 kfree(s5k6aa);
1646
1647 return 0;
1648 }
1649
1650 static const struct i2c_device_id s5k6aa_id[] = {
1651 { DRIVER_NAME, 0 },
1652 { },
1653 };
1654 MODULE_DEVICE_TABLE(i2c, s5k6aa_id);
1655
1656
1657 static struct i2c_driver s5k6aa_i2c_driver = {
1658 .driver = {
1659 .name = DRIVER_NAME
1660 },
1661 .probe = s5k6aa_probe,
1662 .remove = s5k6aa_remove,
1663 .id_table = s5k6aa_id,
1664 };
1665
1666 static int __init s5k6aa_init(void)
1667 {
1668 return i2c_add_driver(&s5k6aa_i2c_driver);
1669 }
1670
1671 static void __exit s5k6aa_exit(void)
1672 {
1673 i2c_del_driver(&s5k6aa_i2c_driver);
1674 }
1675
1676 module_init(s5k6aa_init);
1677 module_exit(s5k6aa_exit);
1678
1679 MODULE_DESCRIPTION("Samsung S5K6AA(FX) SXGA camera driver");
1680 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1681 MODULE_LICENSE("GPL");