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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / i2c / ov2640.c
blob4a4bd5b665a1f1a187149ef798b2f68060f39785
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * ov2640 Camera Driver
4 *
5 * Copyright (C) 2010 Alberto Panizzo <maramaopercheseimorto@gmail.com>
6 *
7 * Based on ov772x, ov9640 drivers and previous non merged implementations.
8 *
9 * Copyright 2005-2009 Freescale Semiconductor, Inc. All Rights Reserved.
10 * Copyright (C) 2006, OmniVision
11 */
12
13 #include <linux/init.h>
14 #include <linux/module.h>
15 #include <linux/i2c.h>
16 #include <linux/clk.h>
17 #include <linux/slab.h>
18 #include <linux/delay.h>
19 #include <linux/gpio.h>
20 #include <linux/gpio/consumer.h>
21 #include <linux/of_gpio.h>
22 #include <linux/v4l2-mediabus.h>
23 #include <linux/videodev2.h>
24
25 #include <media/v4l2-device.h>
26 #include <media/v4l2-event.h>
27 #include <media/v4l2-subdev.h>
28 #include <media/v4l2-ctrls.h>
29 #include <media/v4l2-image-sizes.h>
30
31 #define VAL_SET(x, mask, rshift, lshift) \
32 ((((x) >> rshift) & mask) << lshift)
33 /*
34 * DSP registers
35 * register offset for BANK_SEL == BANK_SEL_DSP
36 */
37 #define R_BYPASS 0x05 /* Bypass DSP */
38 #define R_BYPASS_DSP_BYPAS 0x01 /* Bypass DSP, sensor out directly */
39 #define R_BYPASS_USE_DSP 0x00 /* Use the internal DSP */
40 #define QS 0x44 /* Quantization Scale Factor */
41 #define CTRLI 0x50
42 #define CTRLI_LP_DP 0x80
43 #define CTRLI_ROUND 0x40
44 #define CTRLI_V_DIV_SET(x) VAL_SET(x, 0x3, 0, 3)
45 #define CTRLI_H_DIV_SET(x) VAL_SET(x, 0x3, 0, 0)
46 #define HSIZE 0x51 /* H_SIZE[7:0] (real/4) */
47 #define HSIZE_SET(x) VAL_SET(x, 0xFF, 2, 0)
48 #define VSIZE 0x52 /* V_SIZE[7:0] (real/4) */
49 #define VSIZE_SET(x) VAL_SET(x, 0xFF, 2, 0)
50 #define XOFFL 0x53 /* OFFSET_X[7:0] */
51 #define XOFFL_SET(x) VAL_SET(x, 0xFF, 0, 0)
52 #define YOFFL 0x54 /* OFFSET_Y[7:0] */
53 #define YOFFL_SET(x) VAL_SET(x, 0xFF, 0, 0)
54 #define VHYX 0x55 /* Offset and size completion */
55 #define VHYX_VSIZE_SET(x) VAL_SET(x, 0x1, (8+2), 7)
56 #define VHYX_HSIZE_SET(x) VAL_SET(x, 0x1, (8+2), 3)
57 #define VHYX_YOFF_SET(x) VAL_SET(x, 0x3, 8, 4)
58 #define VHYX_XOFF_SET(x) VAL_SET(x, 0x3, 8, 0)
59 #define DPRP 0x56
60 #define TEST 0x57 /* Horizontal size completion */
61 #define TEST_HSIZE_SET(x) VAL_SET(x, 0x1, (9+2), 7)
62 #define ZMOW 0x5A /* Zoom: Out Width OUTW[7:0] (real/4) */
63 #define ZMOW_OUTW_SET(x) VAL_SET(x, 0xFF, 2, 0)
64 #define ZMOH 0x5B /* Zoom: Out Height OUTH[7:0] (real/4) */
65 #define ZMOH_OUTH_SET(x) VAL_SET(x, 0xFF, 2, 0)
66 #define ZMHH 0x5C /* Zoom: Speed and H&W completion */
67 #define ZMHH_ZSPEED_SET(x) VAL_SET(x, 0x0F, 0, 4)
68 #define ZMHH_OUTH_SET(x) VAL_SET(x, 0x1, (8+2), 2)
69 #define ZMHH_OUTW_SET(x) VAL_SET(x, 0x3, (8+2), 0)
70 #define BPADDR 0x7C /* SDE Indirect Register Access: Address */
71 #define BPDATA 0x7D /* SDE Indirect Register Access: Data */
72 #define CTRL2 0x86 /* DSP Module enable 2 */
73 #define CTRL2_DCW_EN 0x20
74 #define CTRL2_SDE_EN 0x10
75 #define CTRL2_UV_ADJ_EN 0x08
76 #define CTRL2_UV_AVG_EN 0x04
77 #define CTRL2_CMX_EN 0x01
78 #define CTRL3 0x87 /* DSP Module enable 3 */
79 #define CTRL3_BPC_EN 0x80
80 #define CTRL3_WPC_EN 0x40
81 #define SIZEL 0x8C /* Image Size Completion */
82 #define SIZEL_HSIZE8_11_SET(x) VAL_SET(x, 0x1, 11, 6)
83 #define SIZEL_HSIZE8_SET(x) VAL_SET(x, 0x7, 0, 3)
84 #define SIZEL_VSIZE8_SET(x) VAL_SET(x, 0x7, 0, 0)
85 #define HSIZE8 0xC0 /* Image Horizontal Size HSIZE[10:3] */
86 #define HSIZE8_SET(x) VAL_SET(x, 0xFF, 3, 0)
87 #define VSIZE8 0xC1 /* Image Vertical Size VSIZE[10:3] */
88 #define VSIZE8_SET(x) VAL_SET(x, 0xFF, 3, 0)
89 #define CTRL0 0xC2 /* DSP Module enable 0 */
90 #define CTRL0_AEC_EN 0x80
91 #define CTRL0_AEC_SEL 0x40
92 #define CTRL0_STAT_SEL 0x20
93 #define CTRL0_VFIRST 0x10
94 #define CTRL0_YUV422 0x08
95 #define CTRL0_YUV_EN 0x04
96 #define CTRL0_RGB_EN 0x02
97 #define CTRL0_RAW_EN 0x01
98 #define CTRL1 0xC3 /* DSP Module enable 1 */
99 #define CTRL1_CIP 0x80
100 #define CTRL1_DMY 0x40
101 #define CTRL1_RAW_GMA 0x20
102 #define CTRL1_DG 0x10
103 #define CTRL1_AWB 0x08
104 #define CTRL1_AWB_GAIN 0x04
105 #define CTRL1_LENC 0x02
106 #define CTRL1_PRE 0x01
107 /* REG 0xC7 (unknown name): affects Auto White Balance (AWB)
108 * AWB_OFF 0x40
109 * AWB_SIMPLE 0x10
110 * AWB_ON 0x00 (Advanced AWB ?) */
111 #define R_DVP_SP 0xD3 /* DVP output speed control */
112 #define R_DVP_SP_AUTO_MODE 0x80
113 #define R_DVP_SP_DVP_MASK 0x3F /* DVP PCLK = sysclk (48)/[6:0] (YUV0);
114 * = sysclk (48)/(2*[6:0]) (RAW);*/
115 #define IMAGE_MODE 0xDA /* Image Output Format Select */
116 #define IMAGE_MODE_Y8_DVP_EN 0x40
117 #define IMAGE_MODE_JPEG_EN 0x10
118 #define IMAGE_MODE_YUV422 0x00
119 #define IMAGE_MODE_RAW10 0x04 /* (DVP) */
120 #define IMAGE_MODE_RGB565 0x08
121 #define IMAGE_MODE_HREF_VSYNC 0x02 /* HREF timing select in DVP JPEG output
122 * mode (0 for HREF is same as sensor) */
123 #define IMAGE_MODE_LBYTE_FIRST 0x01 /* Byte swap enable for DVP
124 * 1: Low byte first UYVY (C2[4] =0)
125 * VYUY (C2[4] =1)
126 * 0: High byte first YUYV (C2[4]=0)
127 * YVYU (C2[4] = 1) */
128 #define RESET 0xE0 /* Reset */
129 #define RESET_MICROC 0x40
130 #define RESET_SCCB 0x20
131 #define RESET_JPEG 0x10
132 #define RESET_DVP 0x04
133 #define RESET_IPU 0x02
134 #define RESET_CIF 0x01
135 #define REGED 0xED /* Register ED */
136 #define REGED_CLK_OUT_DIS 0x10
137 #define MS_SP 0xF0 /* SCCB Master Speed */
138 #define SS_ID 0xF7 /* SCCB Slave ID */
139 #define SS_CTRL 0xF8 /* SCCB Slave Control */
140 #define SS_CTRL_ADD_AUTO_INC 0x20
141 #define SS_CTRL_EN 0x08
142 #define SS_CTRL_DELAY_CLK 0x04
143 #define SS_CTRL_ACC_EN 0x02
144 #define SS_CTRL_SEN_PASS_THR 0x01
145 #define MC_BIST 0xF9 /* Microcontroller misc register */
146 #define MC_BIST_RESET 0x80 /* Microcontroller Reset */
147 #define MC_BIST_BOOT_ROM_SEL 0x40
148 #define MC_BIST_12KB_SEL 0x20
149 #define MC_BIST_12KB_MASK 0x30
150 #define MC_BIST_512KB_SEL 0x08
151 #define MC_BIST_512KB_MASK 0x0C
152 #define MC_BIST_BUSY_BIT_R 0x02
153 #define MC_BIST_MC_RES_ONE_SH_W 0x02
154 #define MC_BIST_LAUNCH 0x01
155 #define BANK_SEL 0xFF /* Register Bank Select */
156 #define BANK_SEL_DSP 0x00
157 #define BANK_SEL_SENS 0x01
158
159 /*
160 * Sensor registers
161 * register offset for BANK_SEL == BANK_SEL_SENS
162 */
163 #define GAIN 0x00 /* AGC - Gain control gain setting */
164 #define COM1 0x03 /* Common control 1 */
165 #define COM1_1_DUMMY_FR 0x40
166 #define COM1_3_DUMMY_FR 0x80
167 #define COM1_7_DUMMY_FR 0xC0
168 #define COM1_VWIN_LSB_UXGA 0x0F
169 #define COM1_VWIN_LSB_SVGA 0x0A
170 #define COM1_VWIN_LSB_CIF 0x06
171 #define REG04 0x04 /* Register 04 */
172 #define REG04_DEF 0x20 /* Always set */
173 #define REG04_HFLIP_IMG 0x80 /* Horizontal mirror image ON/OFF */
174 #define REG04_VFLIP_IMG 0x40 /* Vertical flip image ON/OFF */
175 #define REG04_VREF_EN 0x10
176 #define REG04_HREF_EN 0x08
177 #define REG04_AEC_SET(x) VAL_SET(x, 0x3, 0, 0)
178 #define REG08 0x08 /* Frame Exposure One-pin Control Pre-charge Row Num */
179 #define COM2 0x09 /* Common control 2 */
180 #define COM2_SOFT_SLEEP_MODE 0x10 /* Soft sleep mode */
181 /* Output drive capability */
182 #define COM2_OCAP_Nx_SET(N) (((N) - 1) & 0x03) /* N = [1x .. 4x] */
183 #define PID 0x0A /* Product ID Number MSB */
184 #define VER 0x0B /* Product ID Number LSB */
185 #define COM3 0x0C /* Common control 3 */
186 #define COM3_BAND_50H 0x04 /* 0 For Banding at 60H */
187 #define COM3_BAND_AUTO 0x02 /* Auto Banding */
188 #define COM3_SING_FR_SNAPSH 0x01 /* 0 For enable live video output after the
189 * snapshot sequence*/
190 #define AEC 0x10 /* AEC[9:2] Exposure Value */
191 #define CLKRC 0x11 /* Internal clock */
192 #define CLKRC_EN 0x80
193 #define CLKRC_DIV_SET(x) (((x) - 1) & 0x1F) /* CLK = XVCLK/(x) */
194 #define COM7 0x12 /* Common control 7 */
195 #define COM7_SRST 0x80 /* Initiates system reset. All registers are
196 * set to factory default values after which
197 * the chip resumes normal operation */
198 #define COM7_RES_UXGA 0x00 /* Resolution selectors for UXGA */
199 #define COM7_RES_SVGA 0x40 /* SVGA */
200 #define COM7_RES_CIF 0x20 /* CIF */
201 #define COM7_ZOOM_EN 0x04 /* Enable Zoom mode */
202 #define COM7_COLOR_BAR_TEST 0x02 /* Enable Color Bar Test Pattern */
203 #define COM8 0x13 /* Common control 8 */
204 #define COM8_DEF 0xC0
205 #define COM8_BNDF_EN 0x20 /* Banding filter ON/OFF */
206 #define COM8_AGC_EN 0x04 /* AGC Auto/Manual control selection */
207 #define COM8_AEC_EN 0x01 /* Auto/Manual Exposure control */
208 #define COM9 0x14 /* Common control 9
209 * Automatic gain ceiling - maximum AGC value [7:5]*/
210 #define COM9_AGC_GAIN_2x 0x00 /* 000 : 2x */
211 #define COM9_AGC_GAIN_4x 0x20 /* 001 : 4x */
212 #define COM9_AGC_GAIN_8x 0x40 /* 010 : 8x */
213 #define COM9_AGC_GAIN_16x 0x60 /* 011 : 16x */
214 #define COM9_AGC_GAIN_32x 0x80 /* 100 : 32x */
215 #define COM9_AGC_GAIN_64x 0xA0 /* 101 : 64x */
216 #define COM9_AGC_GAIN_128x 0xC0 /* 110 : 128x */
217 #define COM10 0x15 /* Common control 10 */
218 #define COM10_PCLK_HREF 0x20 /* PCLK output qualified by HREF */
219 #define COM10_PCLK_RISE 0x10 /* Data is updated at the rising edge of
220 * PCLK (user can latch data at the next
221 * falling edge of PCLK).
222 * 0 otherwise. */
223 #define COM10_HREF_INV 0x08 /* Invert HREF polarity:
224 * HREF negative for valid data*/
225 #define COM10_VSINC_INV 0x02 /* Invert VSYNC polarity */
226 #define HSTART 0x17 /* Horizontal Window start MSB 8 bit */
227 #define HEND 0x18 /* Horizontal Window end MSB 8 bit */
228 #define VSTART 0x19 /* Vertical Window start MSB 8 bit */
229 #define VEND 0x1A /* Vertical Window end MSB 8 bit */
230 #define MIDH 0x1C /* Manufacturer ID byte - high */
231 #define MIDL 0x1D /* Manufacturer ID byte - low */
232 #define AEW 0x24 /* AGC/AEC - Stable operating region (upper limit) */
233 #define AEB 0x25 /* AGC/AEC - Stable operating region (lower limit) */
234 #define VV 0x26 /* AGC/AEC Fast mode operating region */
235 #define VV_HIGH_TH_SET(x) VAL_SET(x, 0xF, 0, 4)
236 #define VV_LOW_TH_SET(x) VAL_SET(x, 0xF, 0, 0)
237 #define REG2A 0x2A /* Dummy pixel insert MSB */
238 #define FRARL 0x2B /* Dummy pixel insert LSB */
239 #define ADDVFL 0x2D /* LSB of insert dummy lines in Vertical direction */
240 #define ADDVFH 0x2E /* MSB of insert dummy lines in Vertical direction */
241 #define YAVG 0x2F /* Y/G Channel Average value */
242 #define REG32 0x32 /* Common Control 32 */
243 #define REG32_PCLK_DIV_2 0x80 /* PCLK freq divided by 2 */
244 #define REG32_PCLK_DIV_4 0xC0 /* PCLK freq divided by 4 */
245 #define ARCOM2 0x34 /* Zoom: Horizontal start point */
246 #define REG45 0x45 /* Register 45 */
247 #define FLL 0x46 /* Frame Length Adjustment LSBs */
248 #define FLH 0x47 /* Frame Length Adjustment MSBs */
249 #define COM19 0x48 /* Zoom: Vertical start point */
250 #define ZOOMS 0x49 /* Zoom: Vertical start point */
251 #define COM22 0x4B /* Flash light control */
252 #define COM25 0x4E /* For Banding operations */
253 #define COM25_50HZ_BANDING_AEC_MSBS_MASK 0xC0 /* 50Hz Bd. AEC 2 MSBs */
254 #define COM25_60HZ_BANDING_AEC_MSBS_MASK 0x30 /* 60Hz Bd. AEC 2 MSBs */
255 #define COM25_50HZ_BANDING_AEC_MSBS_SET(x) VAL_SET(x, 0x3, 8, 6)
256 #define COM25_60HZ_BANDING_AEC_MSBS_SET(x) VAL_SET(x, 0x3, 8, 4)
257 #define BD50 0x4F /* 50Hz Banding AEC 8 LSBs */
258 #define BD50_50HZ_BANDING_AEC_LSBS_SET(x) VAL_SET(x, 0xFF, 0, 0)
259 #define BD60 0x50 /* 60Hz Banding AEC 8 LSBs */
260 #define BD60_60HZ_BANDING_AEC_LSBS_SET(x) VAL_SET(x, 0xFF, 0, 0)
261 #define REG5A 0x5A /* 50/60Hz Banding Maximum AEC Step */
262 #define BD50_MAX_AEC_STEP_MASK 0xF0 /* 50Hz Banding Max. AEC Step */
263 #define BD60_MAX_AEC_STEP_MASK 0x0F /* 60Hz Banding Max. AEC Step */
264 #define BD50_MAX_AEC_STEP_SET(x) VAL_SET((x - 1), 0x0F, 0, 4)
265 #define BD60_MAX_AEC_STEP_SET(x) VAL_SET((x - 1), 0x0F, 0, 0)
266 #define REG5D 0x5D /* AVGsel[7:0], 16-zone average weight option */
267 #define REG5E 0x5E /* AVGsel[15:8], 16-zone average weight option */
268 #define REG5F 0x5F /* AVGsel[23:16], 16-zone average weight option */
269 #define REG60 0x60 /* AVGsel[31:24], 16-zone average weight option */
270 #define HISTO_LOW 0x61 /* Histogram Algorithm Low Level */
271 #define HISTO_HIGH 0x62 /* Histogram Algorithm High Level */
272
273 /*
274 * ID
275 */
276 #define MANUFACTURER_ID 0x7FA2
277 #define PID_OV2640 0x2642
278 #define VERSION(pid, ver) ((pid << 8) | (ver & 0xFF))
279
280 /*
281 * Struct
282 */
283 struct regval_list {
284 u8 reg_num;
285 u8 value;
286 };
287
288 struct ov2640_win_size {
289 char *name;
290 u32 width;
291 u32 height;
292 const struct regval_list *regs;
293 };
294
295
296 struct ov2640_priv {
297 struct v4l2_subdev subdev;
298 #if defined(CONFIG_MEDIA_CONTROLLER)
299 struct media_pad pad;
300 #endif
301 struct v4l2_ctrl_handler hdl;
302 u32 cfmt_code;
303 struct clk *clk;
304 const struct ov2640_win_size *win;
305
306 struct gpio_desc *resetb_gpio;
307 struct gpio_desc *pwdn_gpio;
308
309 struct mutex lock; /* lock to protect streaming and power_count */
310 bool streaming;
311 int power_count;
312 };
313
314 /*
315 * Registers settings
316 */
317
318 #define ENDMARKER { 0xff, 0xff }
319
320 static const struct regval_list ov2640_init_regs[] = {
321 { BANK_SEL, BANK_SEL_DSP },
322 { 0x2c, 0xff },
323 { 0x2e, 0xdf },
324 { BANK_SEL, BANK_SEL_SENS },
325 { 0x3c, 0x32 },
326 { CLKRC, CLKRC_DIV_SET(1) },
327 { COM2, COM2_OCAP_Nx_SET(3) },
328 { REG04, REG04_DEF | REG04_HREF_EN },
329 { COM8, COM8_DEF | COM8_BNDF_EN | COM8_AGC_EN | COM8_AEC_EN },
330 { COM9, COM9_AGC_GAIN_8x | 0x08},
331 { 0x2c, 0x0c },
332 { 0x33, 0x78 },
333 { 0x3a, 0x33 },
334 { 0x3b, 0xfb },
335 { 0x3e, 0x00 },
336 { 0x43, 0x11 },
337 { 0x16, 0x10 },
338 { 0x39, 0x02 },
339 { 0x35, 0x88 },
340 { 0x22, 0x0a },
341 { 0x37, 0x40 },
342 { 0x23, 0x00 },
343 { ARCOM2, 0xa0 },
344 { 0x06, 0x02 },
345 { 0x06, 0x88 },
346 { 0x07, 0xc0 },
347 { 0x0d, 0xb7 },
348 { 0x0e, 0x01 },
349 { 0x4c, 0x00 },
350 { 0x4a, 0x81 },
351 { 0x21, 0x99 },
352 { AEW, 0x40 },
353 { AEB, 0x38 },
354 { VV, VV_HIGH_TH_SET(0x08) | VV_LOW_TH_SET(0x02) },
355 { 0x5c, 0x00 },
356 { 0x63, 0x00 },
357 { FLL, 0x22 },
358 { COM3, 0x38 | COM3_BAND_AUTO },
359 { REG5D, 0x55 },
360 { REG5E, 0x7d },
361 { REG5F, 0x7d },
362 { REG60, 0x55 },
363 { HISTO_LOW, 0x70 },
364 { HISTO_HIGH, 0x80 },
365 { 0x7c, 0x05 },
366 { 0x20, 0x80 },
367 { 0x28, 0x30 },
368 { 0x6c, 0x00 },
369 { 0x6d, 0x80 },
370 { 0x6e, 0x00 },
371 { 0x70, 0x02 },
372 { 0x71, 0x94 },
373 { 0x73, 0xc1 },
374 { 0x3d, 0x34 },
375 { COM7, COM7_RES_UXGA | COM7_ZOOM_EN },
376 { REG5A, BD50_MAX_AEC_STEP_SET(6)
377 | BD60_MAX_AEC_STEP_SET(8) }, /* 0x57 */
378 { COM25, COM25_50HZ_BANDING_AEC_MSBS_SET(0x0bb)
379 | COM25_60HZ_BANDING_AEC_MSBS_SET(0x09c) }, /* 0x00 */
380 { BD50, BD50_50HZ_BANDING_AEC_LSBS_SET(0x0bb) }, /* 0xbb */
381 { BD60, BD60_60HZ_BANDING_AEC_LSBS_SET(0x09c) }, /* 0x9c */
382 { BANK_SEL, BANK_SEL_DSP },
383 { 0xe5, 0x7f },
384 { MC_BIST, MC_BIST_RESET | MC_BIST_BOOT_ROM_SEL },
385 { 0x41, 0x24 },
386 { RESET, RESET_JPEG | RESET_DVP },
387 { 0x76, 0xff },
388 { 0x33, 0xa0 },
389 { 0x42, 0x20 },
390 { 0x43, 0x18 },
391 { 0x4c, 0x00 },
392 { CTRL3, CTRL3_BPC_EN | CTRL3_WPC_EN | 0x10 },
393 { 0x88, 0x3f },
394 { 0xd7, 0x03 },
395 { 0xd9, 0x10 },
396 { R_DVP_SP, R_DVP_SP_AUTO_MODE | 0x2 },
397 { 0xc8, 0x08 },
398 { 0xc9, 0x80 },
399 { BPADDR, 0x00 },
400 { BPDATA, 0x00 },
401 { BPADDR, 0x03 },
402 { BPDATA, 0x48 },
403 { BPDATA, 0x48 },
404 { BPADDR, 0x08 },
405 { BPDATA, 0x20 },
406 { BPDATA, 0x10 },
407 { BPDATA, 0x0e },
408 { 0x90, 0x00 },
409 { 0x91, 0x0e },
410 { 0x91, 0x1a },
411 { 0x91, 0x31 },
412 { 0x91, 0x5a },
413 { 0x91, 0x69 },
414 { 0x91, 0x75 },
415 { 0x91, 0x7e },
416 { 0x91, 0x88 },
417 { 0x91, 0x8f },
418 { 0x91, 0x96 },
419 { 0x91, 0xa3 },
420 { 0x91, 0xaf },
421 { 0x91, 0xc4 },
422 { 0x91, 0xd7 },
423 { 0x91, 0xe8 },
424 { 0x91, 0x20 },
425 { 0x92, 0x00 },
426 { 0x93, 0x06 },
427 { 0x93, 0xe3 },
428 { 0x93, 0x03 },
429 { 0x93, 0x03 },
430 { 0x93, 0x00 },
431 { 0x93, 0x02 },
432 { 0x93, 0x00 },
433 { 0x93, 0x00 },
434 { 0x93, 0x00 },
435 { 0x93, 0x00 },
436 { 0x93, 0x00 },
437 { 0x93, 0x00 },
438 { 0x93, 0x00 },
439 { 0x96, 0x00 },
440 { 0x97, 0x08 },
441 { 0x97, 0x19 },
442 { 0x97, 0x02 },
443 { 0x97, 0x0c },
444 { 0x97, 0x24 },
445 { 0x97, 0x30 },
446 { 0x97, 0x28 },
447 { 0x97, 0x26 },
448 { 0x97, 0x02 },
449 { 0x97, 0x98 },
450 { 0x97, 0x80 },
451 { 0x97, 0x00 },
452 { 0x97, 0x00 },
453 { 0xa4, 0x00 },
454 { 0xa8, 0x00 },
455 { 0xc5, 0x11 },
456 { 0xc6, 0x51 },
457 { 0xbf, 0x80 },
458 { 0xc7, 0x10 }, /* simple AWB */
459 { 0xb6, 0x66 },
460 { 0xb8, 0xA5 },
461 { 0xb7, 0x64 },
462 { 0xb9, 0x7C },
463 { 0xb3, 0xaf },
464 { 0xb4, 0x97 },
465 { 0xb5, 0xFF },
466 { 0xb0, 0xC5 },
467 { 0xb1, 0x94 },
468 { 0xb2, 0x0f },
469 { 0xc4, 0x5c },
470 { 0xa6, 0x00 },
471 { 0xa7, 0x20 },
472 { 0xa7, 0xd8 },
473 { 0xa7, 0x1b },
474 { 0xa7, 0x31 },
475 { 0xa7, 0x00 },
476 { 0xa7, 0x18 },
477 { 0xa7, 0x20 },
478 { 0xa7, 0xd8 },
479 { 0xa7, 0x19 },
480 { 0xa7, 0x31 },
481 { 0xa7, 0x00 },
482 { 0xa7, 0x18 },
483 { 0xa7, 0x20 },
484 { 0xa7, 0xd8 },
485 { 0xa7, 0x19 },
486 { 0xa7, 0x31 },
487 { 0xa7, 0x00 },
488 { 0xa7, 0x18 },
489 { 0x7f, 0x00 },
490 { 0xe5, 0x1f },
491 { 0xe1, 0x77 },
492 { 0xdd, 0x7f },
493 { CTRL0, CTRL0_YUV422 | CTRL0_YUV_EN | CTRL0_RGB_EN },
494 ENDMARKER,
495 };
496
497 /*
498 * Register settings for window size
499 * The preamble, setup the internal DSP to input an UXGA (1600x1200) image.
500 * Then the different zooming configurations will setup the output image size.
501 */
502 static const struct regval_list ov2640_size_change_preamble_regs[] = {
503 { BANK_SEL, BANK_SEL_DSP },
504 { RESET, RESET_DVP },
505 { SIZEL, SIZEL_HSIZE8_11_SET(UXGA_WIDTH) |
506 SIZEL_HSIZE8_SET(UXGA_WIDTH) |
507 SIZEL_VSIZE8_SET(UXGA_HEIGHT) },
508 { HSIZE8, HSIZE8_SET(UXGA_WIDTH) },
509 { VSIZE8, VSIZE8_SET(UXGA_HEIGHT) },
510 { CTRL2, CTRL2_DCW_EN | CTRL2_SDE_EN |
511 CTRL2_UV_AVG_EN | CTRL2_CMX_EN | CTRL2_UV_ADJ_EN },
512 { HSIZE, HSIZE_SET(UXGA_WIDTH) },
513 { VSIZE, VSIZE_SET(UXGA_HEIGHT) },
514 { XOFFL, XOFFL_SET(0) },
515 { YOFFL, YOFFL_SET(0) },
516 { VHYX, VHYX_HSIZE_SET(UXGA_WIDTH) | VHYX_VSIZE_SET(UXGA_HEIGHT) |
517 VHYX_XOFF_SET(0) | VHYX_YOFF_SET(0)},
518 { TEST, TEST_HSIZE_SET(UXGA_WIDTH) },
519 ENDMARKER,
520 };
521
522 #define PER_SIZE_REG_SEQ(x, y, v_div, h_div, pclk_div) \
523 { CTRLI, CTRLI_LP_DP | CTRLI_V_DIV_SET(v_div) | \
524 CTRLI_H_DIV_SET(h_div)}, \
525 { ZMOW, ZMOW_OUTW_SET(x) }, \
526 { ZMOH, ZMOH_OUTH_SET(y) }, \
527 { ZMHH, ZMHH_OUTW_SET(x) | ZMHH_OUTH_SET(y) }, \
528 { R_DVP_SP, pclk_div }, \
529 { RESET, 0x00}
530
531 static const struct regval_list ov2640_qcif_regs[] = {
532 PER_SIZE_REG_SEQ(QCIF_WIDTH, QCIF_HEIGHT, 3, 3, 4),
533 ENDMARKER,
534 };
535
536 static const struct regval_list ov2640_qvga_regs[] = {
537 PER_SIZE_REG_SEQ(QVGA_WIDTH, QVGA_HEIGHT, 2, 2, 4),
538 ENDMARKER,
539 };
540
541 static const struct regval_list ov2640_cif_regs[] = {
542 PER_SIZE_REG_SEQ(CIF_WIDTH, CIF_HEIGHT, 2, 2, 8),
543 ENDMARKER,
544 };
545
546 static const struct regval_list ov2640_vga_regs[] = {
547 PER_SIZE_REG_SEQ(VGA_WIDTH, VGA_HEIGHT, 0, 0, 2),
548 ENDMARKER,
549 };
550
551 static const struct regval_list ov2640_svga_regs[] = {
552 PER_SIZE_REG_SEQ(SVGA_WIDTH, SVGA_HEIGHT, 1, 1, 2),
553 ENDMARKER,
554 };
555
556 static const struct regval_list ov2640_xga_regs[] = {
557 PER_SIZE_REG_SEQ(XGA_WIDTH, XGA_HEIGHT, 0, 0, 2),
558 { CTRLI, 0x00},
559 ENDMARKER,
560 };
561
562 static const struct regval_list ov2640_sxga_regs[] = {
563 PER_SIZE_REG_SEQ(SXGA_WIDTH, SXGA_HEIGHT, 0, 0, 2),
564 { CTRLI, 0x00},
565 { R_DVP_SP, 2 | R_DVP_SP_AUTO_MODE },
566 ENDMARKER,
567 };
568
569 static const struct regval_list ov2640_uxga_regs[] = {
570 PER_SIZE_REG_SEQ(UXGA_WIDTH, UXGA_HEIGHT, 0, 0, 0),
571 { CTRLI, 0x00},
572 { R_DVP_SP, 0 | R_DVP_SP_AUTO_MODE },
573 ENDMARKER,
574 };
575
576 #define OV2640_SIZE(n, w, h, r) \
577 {.name = n, .width = w , .height = h, .regs = r }
578
579 static const struct ov2640_win_size ov2640_supported_win_sizes[] = {
580 OV2640_SIZE("QCIF", QCIF_WIDTH, QCIF_HEIGHT, ov2640_qcif_regs),
581 OV2640_SIZE("QVGA", QVGA_WIDTH, QVGA_HEIGHT, ov2640_qvga_regs),
582 OV2640_SIZE("CIF", CIF_WIDTH, CIF_HEIGHT, ov2640_cif_regs),
583 OV2640_SIZE("VGA", VGA_WIDTH, VGA_HEIGHT, ov2640_vga_regs),
584 OV2640_SIZE("SVGA", SVGA_WIDTH, SVGA_HEIGHT, ov2640_svga_regs),
585 OV2640_SIZE("XGA", XGA_WIDTH, XGA_HEIGHT, ov2640_xga_regs),
586 OV2640_SIZE("SXGA", SXGA_WIDTH, SXGA_HEIGHT, ov2640_sxga_regs),
587 OV2640_SIZE("UXGA", UXGA_WIDTH, UXGA_HEIGHT, ov2640_uxga_regs),
588 };
589
590 /*
591 * Register settings for pixel formats
592 */
593 static const struct regval_list ov2640_format_change_preamble_regs[] = {
594 { BANK_SEL, BANK_SEL_DSP },
595 { R_BYPASS, R_BYPASS_USE_DSP },
596 ENDMARKER,
597 };
598
599 static const struct regval_list ov2640_yuyv_regs[] = {
600 { IMAGE_MODE, IMAGE_MODE_YUV422 },
601 { 0xd7, 0x03 },
602 { 0x33, 0xa0 },
603 { 0xe5, 0x1f },
604 { 0xe1, 0x67 },
605 { RESET, 0x00 },
606 { R_BYPASS, R_BYPASS_USE_DSP },
607 ENDMARKER,
608 };
609
610 static const struct regval_list ov2640_uyvy_regs[] = {
611 { IMAGE_MODE, IMAGE_MODE_LBYTE_FIRST | IMAGE_MODE_YUV422 },
612 { 0xd7, 0x01 },
613 { 0x33, 0xa0 },
614 { 0xe1, 0x67 },
615 { RESET, 0x00 },
616 { R_BYPASS, R_BYPASS_USE_DSP },
617 ENDMARKER,
618 };
619
620 static const struct regval_list ov2640_rgb565_be_regs[] = {
621 { IMAGE_MODE, IMAGE_MODE_RGB565 },
622 { 0xd7, 0x03 },
623 { RESET, 0x00 },
624 { R_BYPASS, R_BYPASS_USE_DSP },
625 ENDMARKER,
626 };
627
628 static const struct regval_list ov2640_rgb565_le_regs[] = {
629 { IMAGE_MODE, IMAGE_MODE_LBYTE_FIRST | IMAGE_MODE_RGB565 },
630 { 0xd7, 0x03 },
631 { RESET, 0x00 },
632 { R_BYPASS, R_BYPASS_USE_DSP },
633 ENDMARKER,
634 };
635
636 static u32 ov2640_codes[] = {
637 MEDIA_BUS_FMT_YUYV8_2X8,
638 MEDIA_BUS_FMT_UYVY8_2X8,
639 MEDIA_BUS_FMT_YVYU8_2X8,
640 MEDIA_BUS_FMT_VYUY8_2X8,
641 MEDIA_BUS_FMT_RGB565_2X8_BE,
642 MEDIA_BUS_FMT_RGB565_2X8_LE,
643 };
644
645 /*
646 * General functions
647 */
648 static struct ov2640_priv *to_ov2640(const struct i2c_client *client)
649 {
650 return container_of(i2c_get_clientdata(client), struct ov2640_priv,
651 subdev);
652 }
653
654 static int ov2640_write_array(struct i2c_client *client,
655 const struct regval_list *vals)
656 {
657 int ret;
658
659 while ((vals->reg_num != 0xff) || (vals->value != 0xff)) {
660 ret = i2c_smbus_write_byte_data(client,
661 vals->reg_num, vals->value);
662 dev_vdbg(&client->dev, "array: 0x%02x, 0x%02x",
663 vals->reg_num, vals->value);
664
665 if (ret < 0)
666 return ret;
667 vals++;
668 }
669 return 0;
670 }
671
672 static int ov2640_mask_set(struct i2c_client *client,
673 u8 reg, u8 mask, u8 set)
674 {
675 s32 val = i2c_smbus_read_byte_data(client, reg);
676 if (val < 0)
677 return val;
678
679 val &= ~mask;
680 val |= set & mask;
681
682 dev_vdbg(&client->dev, "masks: 0x%02x, 0x%02x", reg, val);
683
684 return i2c_smbus_write_byte_data(client, reg, val);
685 }
686
687 static int ov2640_reset(struct i2c_client *client)
688 {
689 int ret;
690 static const struct regval_list reset_seq[] = {
691 {BANK_SEL, BANK_SEL_SENS},
692 {COM7, COM7_SRST},
693 ENDMARKER,
694 };
695
696 ret = ov2640_write_array(client, reset_seq);
697 if (ret)
698 goto err;
699
700 msleep(5);
701 err:
702 dev_dbg(&client->dev, "%s: (ret %d)", __func__, ret);
703 return ret;
704 }
705
706 static const char * const ov2640_test_pattern_menu[] = {
707 "Disabled",
708 "Eight Vertical Colour Bars",
709 };
710
711 /*
712 * functions
713 */
714 static int ov2640_s_ctrl(struct v4l2_ctrl *ctrl)
715 {
716 struct v4l2_subdev *sd =
717 &container_of(ctrl->handler, struct ov2640_priv, hdl)->subdev;
718 struct i2c_client *client = v4l2_get_subdevdata(sd);
719 struct ov2640_priv *priv = to_ov2640(client);
720 u8 val;
721 int ret;
722
723 /* v4l2_ctrl_lock() locks our own mutex */
724
725 /*
726 * If the device is not powered up by the host driver, do not apply any
727 * controls to H/W at this time. Instead the controls will be restored
728 * when the streaming is started.
729 */
730 if (!priv->power_count)
731 return 0;
732
733 ret = i2c_smbus_write_byte_data(client, BANK_SEL, BANK_SEL_SENS);
734 if (ret < 0)
735 return ret;
736
737 switch (ctrl->id) {
738 case V4L2_CID_VFLIP:
739 val = ctrl->val ? REG04_VFLIP_IMG | REG04_VREF_EN : 0x00;
740 return ov2640_mask_set(client, REG04,
741 REG04_VFLIP_IMG | REG04_VREF_EN, val);
742 /* NOTE: REG04_VREF_EN: 1 line shift / even/odd line swap */
743 case V4L2_CID_HFLIP:
744 val = ctrl->val ? REG04_HFLIP_IMG : 0x00;
745 return ov2640_mask_set(client, REG04, REG04_HFLIP_IMG, val);
746 case V4L2_CID_TEST_PATTERN:
747 val = ctrl->val ? COM7_COLOR_BAR_TEST : 0x00;
748 return ov2640_mask_set(client, COM7, COM7_COLOR_BAR_TEST, val);
749 }
750
751 return -EINVAL;
752 }
753
754 #ifdef CONFIG_VIDEO_ADV_DEBUG
755 static int ov2640_g_register(struct v4l2_subdev *sd,
756 struct v4l2_dbg_register *reg)
757 {
758 struct i2c_client *client = v4l2_get_subdevdata(sd);
759 int ret;
760
761 reg->size = 1;
762 if (reg->reg > 0xff)
763 return -EINVAL;
764
765 ret = i2c_smbus_read_byte_data(client, reg->reg);
766 if (ret < 0)
767 return ret;
768
769 reg->val = ret;
770
771 return 0;
772 }
773
774 static int ov2640_s_register(struct v4l2_subdev *sd,
775 const struct v4l2_dbg_register *reg)
776 {
777 struct i2c_client *client = v4l2_get_subdevdata(sd);
778
779 if (reg->reg > 0xff ||
780 reg->val > 0xff)
781 return -EINVAL;
782
783 return i2c_smbus_write_byte_data(client, reg->reg, reg->val);
784 }
785 #endif
786
787 static void ov2640_set_power(struct ov2640_priv *priv, int on)
788 {
789 #ifdef CONFIG_GPIOLIB
790 if (priv->pwdn_gpio)
791 gpiod_direction_output(priv->pwdn_gpio, !on);
792 if (on && priv->resetb_gpio) {
793 /* Active the resetb pin to perform a reset pulse */
794 gpiod_direction_output(priv->resetb_gpio, 1);
795 usleep_range(3000, 5000);
796 gpiod_set_value(priv->resetb_gpio, 0);
797 }
798 #endif
799 }
800
801 static int ov2640_s_power(struct v4l2_subdev *sd, int on)
802 {
803 struct i2c_client *client = v4l2_get_subdevdata(sd);
804 struct ov2640_priv *priv = to_ov2640(client);
805
806 mutex_lock(&priv->lock);
807
808 /*
809 * If the power count is modified from 0 to != 0 or from != 0 to 0,
810 * update the power state.
811 */
812 if (priv->power_count == !on)
813 ov2640_set_power(priv, on);
814 priv->power_count += on ? 1 : -1;
815 WARN_ON(priv->power_count < 0);
816 mutex_unlock(&priv->lock);
817
818 return 0;
819 }
820
821 /* Select the nearest higher resolution for capture */
822 static const struct ov2640_win_size *ov2640_select_win(u32 width, u32 height)
823 {
824 int i, default_size = ARRAY_SIZE(ov2640_supported_win_sizes) - 1;
825
826 for (i = 0; i < ARRAY_SIZE(ov2640_supported_win_sizes); i++) {
827 if (ov2640_supported_win_sizes[i].width >= width &&
828 ov2640_supported_win_sizes[i].height >= height)
829 return &ov2640_supported_win_sizes[i];
830 }
831
832 return &ov2640_supported_win_sizes[default_size];
833 }
834
835 static int ov2640_set_params(struct i2c_client *client,
836 const struct ov2640_win_size *win, u32 code)
837 {
838 const struct regval_list *selected_cfmt_regs;
839 u8 val;
840 int ret;
841
842 switch (code) {
843 case MEDIA_BUS_FMT_RGB565_2X8_BE:
844 dev_dbg(&client->dev, "%s: Selected cfmt RGB565 BE", __func__);
845 selected_cfmt_regs = ov2640_rgb565_be_regs;
846 break;
847 case MEDIA_BUS_FMT_RGB565_2X8_LE:
848 dev_dbg(&client->dev, "%s: Selected cfmt RGB565 LE", __func__);
849 selected_cfmt_regs = ov2640_rgb565_le_regs;
850 break;
851 case MEDIA_BUS_FMT_YUYV8_2X8:
852 dev_dbg(&client->dev, "%s: Selected cfmt YUYV (YUV422)", __func__);
853 selected_cfmt_regs = ov2640_yuyv_regs;
854 break;
855 case MEDIA_BUS_FMT_UYVY8_2X8:
856 default:
857 dev_dbg(&client->dev, "%s: Selected cfmt UYVY", __func__);
858 selected_cfmt_regs = ov2640_uyvy_regs;
859 break;
860 case MEDIA_BUS_FMT_YVYU8_2X8:
861 dev_dbg(&client->dev, "%s: Selected cfmt YVYU", __func__);
862 selected_cfmt_regs = ov2640_yuyv_regs;
863 break;
864 case MEDIA_BUS_FMT_VYUY8_2X8:
865 dev_dbg(&client->dev, "%s: Selected cfmt VYUY", __func__);
866 selected_cfmt_regs = ov2640_uyvy_regs;
867 break;
868 }
869
870 /* reset hardware */
871 ov2640_reset(client);
872
873 /* initialize the sensor with default data */
874 dev_dbg(&client->dev, "%s: Init default", __func__);
875 ret = ov2640_write_array(client, ov2640_init_regs);
876 if (ret < 0)
877 goto err;
878
879 /* select preamble */
880 dev_dbg(&client->dev, "%s: Set size to %s", __func__, win->name);
881 ret = ov2640_write_array(client, ov2640_size_change_preamble_regs);
882 if (ret < 0)
883 goto err;
884
885 /* set size win */
886 ret = ov2640_write_array(client, win->regs);
887 if (ret < 0)
888 goto err;
889
890 /* cfmt preamble */
891 dev_dbg(&client->dev, "%s: Set cfmt", __func__);
892 ret = ov2640_write_array(client, ov2640_format_change_preamble_regs);
893 if (ret < 0)
894 goto err;
895
896 /* set cfmt */
897 ret = ov2640_write_array(client, selected_cfmt_regs);
898 if (ret < 0)
899 goto err;
900 val = (code == MEDIA_BUS_FMT_YVYU8_2X8)
901 || (code == MEDIA_BUS_FMT_VYUY8_2X8) ? CTRL0_VFIRST : 0x00;
902 ret = ov2640_mask_set(client, CTRL0, CTRL0_VFIRST, val);
903 if (ret < 0)
904 goto err;
905
906 return 0;
907
908 err:
909 dev_err(&client->dev, "%s: Error %d", __func__, ret);
910 ov2640_reset(client);
911
912 return ret;
913 }
914
915 static int ov2640_get_fmt(struct v4l2_subdev *sd,
916 struct v4l2_subdev_pad_config *cfg,
917 struct v4l2_subdev_format *format)
918 {
919 struct v4l2_mbus_framefmt *mf = &format->format;
920 struct i2c_client *client = v4l2_get_subdevdata(sd);
921 struct ov2640_priv *priv = to_ov2640(client);
922
923 if (format->pad)
924 return -EINVAL;
925
926 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
927 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
928 mf = v4l2_subdev_get_try_format(sd, cfg, 0);
929 format->format = *mf;
930 return 0;
931 #else
932 return -EINVAL;
933 #endif
934 }
935
936 mf->width = priv->win->width;
937 mf->height = priv->win->height;
938 mf->code = priv->cfmt_code;
939 mf->colorspace = V4L2_COLORSPACE_SRGB;
940 mf->field = V4L2_FIELD_NONE;
941 mf->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
942 mf->quantization = V4L2_QUANTIZATION_DEFAULT;
943 mf->xfer_func = V4L2_XFER_FUNC_DEFAULT;
944
945 return 0;
946 }
947
948 static int ov2640_set_fmt(struct v4l2_subdev *sd,
949 struct v4l2_subdev_pad_config *cfg,
950 struct v4l2_subdev_format *format)
951 {
952 struct v4l2_mbus_framefmt *mf = &format->format;
953 struct i2c_client *client = v4l2_get_subdevdata(sd);
954 struct ov2640_priv *priv = to_ov2640(client);
955 const struct ov2640_win_size *win;
956 int ret = 0;
957
958 if (format->pad)
959 return -EINVAL;
960
961 mutex_lock(&priv->lock);
962
963 /* select suitable win */
964 win = ov2640_select_win(mf->width, mf->height);
965 mf->width = win->width;
966 mf->height = win->height;
967
968 mf->field = V4L2_FIELD_NONE;
969 mf->colorspace = V4L2_COLORSPACE_SRGB;
970 mf->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
971 mf->quantization = V4L2_QUANTIZATION_DEFAULT;
972 mf->xfer_func = V4L2_XFER_FUNC_DEFAULT;
973
974 switch (mf->code) {
975 case MEDIA_BUS_FMT_RGB565_2X8_BE:
976 case MEDIA_BUS_FMT_RGB565_2X8_LE:
977 case MEDIA_BUS_FMT_YUYV8_2X8:
978 case MEDIA_BUS_FMT_UYVY8_2X8:
979 case MEDIA_BUS_FMT_YVYU8_2X8:
980 case MEDIA_BUS_FMT_VYUY8_2X8:
981 break;
982 default:
983 mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
984 break;
985 }
986
987 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
988 struct ov2640_priv *priv = to_ov2640(client);
989
990 if (priv->streaming) {
991 ret = -EBUSY;
992 goto out;
993 }
994 /* select win */
995 priv->win = win;
996 /* select format */
997 priv->cfmt_code = mf->code;
998 } else {
999 cfg->try_fmt = *mf;
1000 }
1001 out:
1002 mutex_unlock(&priv->lock);
1003
1004 return ret;
1005 }
1006
1007 static int ov2640_init_cfg(struct v4l2_subdev *sd,
1008 struct v4l2_subdev_pad_config *cfg)
1009 {
1010 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1011 struct v4l2_mbus_framefmt *try_fmt =
1012 v4l2_subdev_get_try_format(sd, cfg, 0);
1013 const struct ov2640_win_size *win =
1014 ov2640_select_win(SVGA_WIDTH, SVGA_HEIGHT);
1015
1016 try_fmt->width = win->width;
1017 try_fmt->height = win->height;
1018 try_fmt->code = MEDIA_BUS_FMT_UYVY8_2X8;
1019 try_fmt->colorspace = V4L2_COLORSPACE_SRGB;
1020 try_fmt->field = V4L2_FIELD_NONE;
1021 try_fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1022 try_fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
1023 try_fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1024 #endif
1025 return 0;
1026 }
1027
1028 static int ov2640_enum_mbus_code(struct v4l2_subdev *sd,
1029 struct v4l2_subdev_pad_config *cfg,
1030 struct v4l2_subdev_mbus_code_enum *code)
1031 {
1032 if (code->pad || code->index >= ARRAY_SIZE(ov2640_codes))
1033 return -EINVAL;
1034
1035 code->code = ov2640_codes[code->index];
1036 return 0;
1037 }
1038
1039 static int ov2640_get_selection(struct v4l2_subdev *sd,
1040 struct v4l2_subdev_pad_config *cfg,
1041 struct v4l2_subdev_selection *sel)
1042 {
1043 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1044 return -EINVAL;
1045
1046 switch (sel->target) {
1047 case V4L2_SEL_TGT_CROP_BOUNDS:
1048 case V4L2_SEL_TGT_CROP:
1049 sel->r.left = 0;
1050 sel->r.top = 0;
1051 sel->r.width = UXGA_WIDTH;
1052 sel->r.height = UXGA_HEIGHT;
1053 return 0;
1054 default:
1055 return -EINVAL;
1056 }
1057 }
1058
1059 static int ov2640_s_stream(struct v4l2_subdev *sd, int on)
1060 {
1061 struct i2c_client *client = v4l2_get_subdevdata(sd);
1062 struct ov2640_priv *priv = to_ov2640(client);
1063 int ret = 0;
1064
1065 mutex_lock(&priv->lock);
1066 if (priv->streaming == !on) {
1067 if (on) {
1068 ret = ov2640_set_params(client, priv->win,
1069 priv->cfmt_code);
1070 if (!ret)
1071 ret = __v4l2_ctrl_handler_setup(&priv->hdl);
1072 }
1073 }
1074 if (!ret)
1075 priv->streaming = on;
1076 mutex_unlock(&priv->lock);
1077
1078 return ret;
1079 }
1080
1081 static int ov2640_video_probe(struct i2c_client *client)
1082 {
1083 struct ov2640_priv *priv = to_ov2640(client);
1084 u8 pid, ver, midh, midl;
1085 const char *devname;
1086 int ret;
1087
1088 ret = ov2640_s_power(&priv->subdev, 1);
1089 if (ret < 0)
1090 return ret;
1091
1092 /*
1093 * check and show product ID and manufacturer ID
1094 */
1095 i2c_smbus_write_byte_data(client, BANK_SEL, BANK_SEL_SENS);
1096 pid = i2c_smbus_read_byte_data(client, PID);
1097 ver = i2c_smbus_read_byte_data(client, VER);
1098 midh = i2c_smbus_read_byte_data(client, MIDH);
1099 midl = i2c_smbus_read_byte_data(client, MIDL);
1100
1101 switch (VERSION(pid, ver)) {
1102 case PID_OV2640:
1103 devname = "ov2640";
1104 break;
1105 default:
1106 dev_err(&client->dev,
1107 "Product ID error %x:%x\n", pid, ver);
1108 ret = -ENODEV;
1109 goto done;
1110 }
1111
1112 dev_info(&client->dev,
1113 "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",
1114 devname, pid, ver, midh, midl);
1115
1116 done:
1117 ov2640_s_power(&priv->subdev, 0);
1118 return ret;
1119 }
1120
1121 static const struct v4l2_ctrl_ops ov2640_ctrl_ops = {
1122 .s_ctrl = ov2640_s_ctrl,
1123 };
1124
1125 static const struct v4l2_subdev_core_ops ov2640_subdev_core_ops = {
1126 .log_status = v4l2_ctrl_subdev_log_status,
1127 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
1128 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1129 #ifdef CONFIG_VIDEO_ADV_DEBUG
1130 .g_register = ov2640_g_register,
1131 .s_register = ov2640_s_register,
1132 #endif
1133 .s_power = ov2640_s_power,
1134 };
1135
1136 static const struct v4l2_subdev_pad_ops ov2640_subdev_pad_ops = {
1137 .init_cfg = ov2640_init_cfg,
1138 .enum_mbus_code = ov2640_enum_mbus_code,
1139 .get_selection = ov2640_get_selection,
1140 .get_fmt = ov2640_get_fmt,
1141 .set_fmt = ov2640_set_fmt,
1142 };
1143
1144 static const struct v4l2_subdev_video_ops ov2640_subdev_video_ops = {
1145 .s_stream = ov2640_s_stream,
1146 };
1147
1148 static const struct v4l2_subdev_ops ov2640_subdev_ops = {
1149 .core = &ov2640_subdev_core_ops,
1150 .pad = &ov2640_subdev_pad_ops,
1151 .video = &ov2640_subdev_video_ops,
1152 };
1153
1154 static int ov2640_probe_dt(struct i2c_client *client,
1155 struct ov2640_priv *priv)
1156 {
1157 int ret;
1158
1159 /* Request the reset GPIO deasserted */
1160 priv->resetb_gpio = devm_gpiod_get_optional(&client->dev, "resetb",
1161 GPIOD_OUT_LOW);
1162
1163 if (!priv->resetb_gpio)
1164 dev_dbg(&client->dev, "resetb gpio is not assigned!\n");
1165
1166 ret = PTR_ERR_OR_ZERO(priv->resetb_gpio);
1167 if (ret && ret != -ENOSYS) {
1168 dev_dbg(&client->dev,
1169 "Error %d while getting resetb gpio\n", ret);
1170 return ret;
1171 }
1172
1173 /* Request the power down GPIO asserted */
1174 priv->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "pwdn",
1175 GPIOD_OUT_HIGH);
1176
1177 if (!priv->pwdn_gpio)
1178 dev_dbg(&client->dev, "pwdn gpio is not assigned!\n");
1179
1180 ret = PTR_ERR_OR_ZERO(priv->pwdn_gpio);
1181 if (ret && ret != -ENOSYS) {
1182 dev_dbg(&client->dev,
1183 "Error %d while getting pwdn gpio\n", ret);
1184 return ret;
1185 }
1186
1187 return 0;
1188 }
1189
1190 /*
1191 * i2c_driver functions
1192 */
1193 static int ov2640_probe(struct i2c_client *client)
1194 {
1195 struct ov2640_priv *priv;
1196 struct i2c_adapter *adapter = client->adapter;
1197 int ret;
1198
1199 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1200 dev_err(&adapter->dev,
1201 "OV2640: I2C-Adapter doesn't support SMBUS\n");
1202 return -EIO;
1203 }
1204
1205 priv = devm_kzalloc(&client->dev, sizeof(*priv), GFP_KERNEL);
1206 if (!priv)
1207 return -ENOMEM;
1208
1209 if (client->dev.of_node) {
1210 priv->clk = devm_clk_get(&client->dev, "xvclk");
1211 if (IS_ERR(priv->clk))
1212 return PTR_ERR(priv->clk);
1213 ret = clk_prepare_enable(priv->clk);
1214 if (ret)
1215 return ret;
1216 }
1217
1218 ret = ov2640_probe_dt(client, priv);
1219 if (ret)
1220 goto err_clk;
1221
1222 priv->win = ov2640_select_win(SVGA_WIDTH, SVGA_HEIGHT);
1223 priv->cfmt_code = MEDIA_BUS_FMT_UYVY8_2X8;
1224
1225 v4l2_i2c_subdev_init(&priv->subdev, client, &ov2640_subdev_ops);
1226 priv->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
1227 V4L2_SUBDEV_FL_HAS_EVENTS;
1228 mutex_init(&priv->lock);
1229 v4l2_ctrl_handler_init(&priv->hdl, 3);
1230 priv->hdl.lock = &priv->lock;
1231 v4l2_ctrl_new_std(&priv->hdl, &ov2640_ctrl_ops,
1232 V4L2_CID_VFLIP, 0, 1, 1, 0);
1233 v4l2_ctrl_new_std(&priv->hdl, &ov2640_ctrl_ops,
1234 V4L2_CID_HFLIP, 0, 1, 1, 0);
1235 v4l2_ctrl_new_std_menu_items(&priv->hdl, &ov2640_ctrl_ops,
1236 V4L2_CID_TEST_PATTERN,
1237 ARRAY_SIZE(ov2640_test_pattern_menu) - 1, 0, 0,
1238 ov2640_test_pattern_menu);
1239 priv->subdev.ctrl_handler = &priv->hdl;
1240 if (priv->hdl.error) {
1241 ret = priv->hdl.error;
1242 goto err_hdl;
1243 }
1244 #if defined(CONFIG_MEDIA_CONTROLLER)
1245 priv->pad.flags = MEDIA_PAD_FL_SOURCE;
1246 priv->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1247 ret = media_entity_pads_init(&priv->subdev.entity, 1, &priv->pad);
1248 if (ret < 0)
1249 goto err_hdl;
1250 #endif
1251
1252 ret = ov2640_video_probe(client);
1253 if (ret < 0)
1254 goto err_videoprobe;
1255
1256 ret = v4l2_async_register_subdev(&priv->subdev);
1257 if (ret < 0)
1258 goto err_videoprobe;
1259
1260 dev_info(&adapter->dev, "OV2640 Probed\n");
1261
1262 return 0;
1263
1264 err_videoprobe:
1265 media_entity_cleanup(&priv->subdev.entity);
1266 err_hdl:
1267 v4l2_ctrl_handler_free(&priv->hdl);
1268 mutex_destroy(&priv->lock);
1269 err_clk:
1270 clk_disable_unprepare(priv->clk);
1271 return ret;
1272 }
1273
1274 static int ov2640_remove(struct i2c_client *client)
1275 {
1276 struct ov2640_priv *priv = to_ov2640(client);
1277
1278 v4l2_async_unregister_subdev(&priv->subdev);
1279 v4l2_ctrl_handler_free(&priv->hdl);
1280 mutex_destroy(&priv->lock);
1281 media_entity_cleanup(&priv->subdev.entity);
1282 v4l2_device_unregister_subdev(&priv->subdev);
1283 clk_disable_unprepare(priv->clk);
1284 return 0;
1285 }
1286
1287 static const struct i2c_device_id ov2640_id[] = {
1288 { "ov2640", 0 },
1289 { }
1290 };
1291 MODULE_DEVICE_TABLE(i2c, ov2640_id);
1292
1293 static const struct of_device_id ov2640_of_match[] = {
1294 {.compatible = "ovti,ov2640", },
1295 {},
1296 };
1297 MODULE_DEVICE_TABLE(of, ov2640_of_match);
1298
1299 static struct i2c_driver ov2640_i2c_driver = {
1300 .driver = {
1301 .name = "ov2640",
1302 .of_match_table = of_match_ptr(ov2640_of_match),
1303 },
1304 .probe_new = ov2640_probe,
1305 .remove = ov2640_remove,
1306 .id_table = ov2640_id,
1307 };
1308
1309 module_i2c_driver(ov2640_i2c_driver);
1310
1311 MODULE_DESCRIPTION("Driver for Omni Vision 2640 sensor");
1312 MODULE_AUTHOR("Alberto Panizzo");
1313 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support