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ec16dae5 JVJ |
1 | /* stk-sensor.c: Driver for ov96xx sensor (used in some Syntek webcams) |
2 | * | |
3 | * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com> | |
4 | * | |
5 | * Some parts derived from ov7670.c: | |
6 | * Copyright 2006 One Laptop Per Child Association, Inc. Written | |
7 | * by Jonathan Corbet with substantial inspiration from Mark | |
8 | * McClelland's ovcamchip code. | |
9 | * | |
10 | * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net> | |
11 | * | |
12 | * This file may be distributed under the terms of the GNU General | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | /* Controlling the sensor via the STK1125 vendor specific control interface: | |
29 | * The camera uses an OmniVision sensor and the stk1125 provides an | |
30 | * SCCB(i2c)-USB bridge which let us program the sensor. | |
31 | * In my case the sensor id is 0x9652, it can be read from sensor's register | |
32 | * 0x0A and 0x0B as follows: | |
33 | * - read register #R: | |
34 | * output #R to index 0x0208 | |
35 | * output 0x0070 to index 0x0200 | |
36 | * input 1 byte from index 0x0201 (some kind of status register) | |
37 | * until its value is 0x01 | |
38 | * input 1 byte from index 0x0209. This is the value of #R | |
39 | * - write value V to register #R | |
40 | * output #R to index 0x0204 | |
41 | * output V to index 0x0205 | |
42 | * output 0x0005 to index 0x0200 | |
43 | * input 1 byte from index 0x0201 until its value becomes 0x04 | |
44 | */ | |
45 | ||
46 | /* It seems the i2c bus is controlled with these registers */ | |
47 | ||
48 | #include "stk-webcam.h" | |
49 | ||
50 | #define STK_IIC_BASE (0x0200) | |
51 | # define STK_IIC_OP (STK_IIC_BASE) | |
52 | # define STK_IIC_OP_TX (0x05) | |
53 | # define STK_IIC_OP_RX (0x70) | |
54 | # define STK_IIC_STAT (STK_IIC_BASE+1) | |
55 | # define STK_IIC_STAT_TX_OK (0x04) | |
56 | # define STK_IIC_STAT_RX_OK (0x01) | |
57 | /* I don't know what does this register. | |
58 | * when it is 0x00 or 0x01, we cannot talk to the sensor, | |
59 | * other values work */ | |
60 | # define STK_IIC_ENABLE (STK_IIC_BASE+2) | |
61 | # define STK_IIC_ENABLE_NO (0x00) | |
62 | /* This is what the driver writes in windows */ | |
63 | # define STK_IIC_ENABLE_YES (0x1e) | |
64 | /* | |
65 | * Address of the slave. Seems like the binary driver look for the | |
66 | * sensor in multiple places, attempting a reset sequence. | |
67 | * We only know about the ov9650 | |
68 | */ | |
69 | # define STK_IIC_ADDR (STK_IIC_BASE+3) | |
70 | # define STK_IIC_TX_INDEX (STK_IIC_BASE+4) | |
71 | # define STK_IIC_TX_VALUE (STK_IIC_BASE+5) | |
72 | # define STK_IIC_RX_INDEX (STK_IIC_BASE+8) | |
73 | # define STK_IIC_RX_VALUE (STK_IIC_BASE+9) | |
74 | ||
75 | #define MAX_RETRIES (50) | |
76 | ||
77 | #define SENSOR_ADDRESS (0x60) | |
78 | ||
79 | /* From ov7670.c (These registers aren't fully accurate) */ | |
80 | ||
81 | /* Registers */ | |
82 | #define REG_GAIN 0x00 /* Gain lower 8 bits (rest in vref) */ | |
83 | #define REG_BLUE 0x01 /* blue gain */ | |
84 | #define REG_RED 0x02 /* red gain */ | |
85 | #define REG_VREF 0x03 /* Pieces of GAIN, VSTART, VSTOP */ | |
86 | #define REG_COM1 0x04 /* Control 1 */ | |
87 | #define COM1_CCIR656 0x40 /* CCIR656 enable */ | |
88 | #define COM1_QFMT 0x20 /* QVGA/QCIF format */ | |
89 | #define COM1_SKIP_0 0x00 /* Do not skip any row */ | |
90 | #define COM1_SKIP_2 0x04 /* Skip 2 rows of 4 */ | |
91 | #define COM1_SKIP_3 0x08 /* Skip 3 rows of 4 */ | |
92 | #define REG_BAVE 0x05 /* U/B Average level */ | |
93 | #define REG_GbAVE 0x06 /* Y/Gb Average level */ | |
94 | #define REG_AECHH 0x07 /* AEC MS 5 bits */ | |
95 | #define REG_RAVE 0x08 /* V/R Average level */ | |
96 | #define REG_COM2 0x09 /* Control 2 */ | |
97 | #define COM2_SSLEEP 0x10 /* Soft sleep mode */ | |
98 | #define REG_PID 0x0a /* Product ID MSB */ | |
99 | #define REG_VER 0x0b /* Product ID LSB */ | |
100 | #define REG_COM3 0x0c /* Control 3 */ | |
101 | #define COM3_SWAP 0x40 /* Byte swap */ | |
102 | #define COM3_SCALEEN 0x08 /* Enable scaling */ | |
103 | #define COM3_DCWEN 0x04 /* Enable downsamp/crop/window */ | |
104 | #define REG_COM4 0x0d /* Control 4 */ | |
105 | #define REG_COM5 0x0e /* All "reserved" */ | |
106 | #define REG_COM6 0x0f /* Control 6 */ | |
107 | #define REG_AECH 0x10 /* More bits of AEC value */ | |
108 | #define REG_CLKRC 0x11 /* Clock control */ | |
109 | #define CLK_PLL 0x80 /* Enable internal PLL */ | |
110 | #define CLK_EXT 0x40 /* Use external clock directly */ | |
111 | #define CLK_SCALE 0x3f /* Mask for internal clock scale */ | |
112 | #define REG_COM7 0x12 /* Control 7 */ | |
113 | #define COM7_RESET 0x80 /* Register reset */ | |
114 | #define COM7_FMT_MASK 0x38 | |
115 | #define COM7_FMT_SXGA 0x00 | |
116 | #define COM7_FMT_VGA 0x40 | |
117 | #define COM7_FMT_CIF 0x20 /* CIF format */ | |
118 | #define COM7_FMT_QVGA 0x10 /* QVGA format */ | |
119 | #define COM7_FMT_QCIF 0x08 /* QCIF format */ | |
120 | #define COM7_RGB 0x04 /* bits 0 and 2 - RGB format */ | |
121 | #define COM7_YUV 0x00 /* YUV */ | |
122 | #define COM7_BAYER 0x01 /* Bayer format */ | |
123 | #define COM7_PBAYER 0x05 /* "Processed bayer" */ | |
124 | #define REG_COM8 0x13 /* Control 8 */ | |
125 | #define COM8_FASTAEC 0x80 /* Enable fast AGC/AEC */ | |
126 | #define COM8_AECSTEP 0x40 /* Unlimited AEC step size */ | |
127 | #define COM8_BFILT 0x20 /* Band filter enable */ | |
128 | #define COM8_AGC 0x04 /* Auto gain enable */ | |
129 | #define COM8_AWB 0x02 /* White balance enable */ | |
130 | #define COM8_AEC 0x01 /* Auto exposure enable */ | |
131 | #define REG_COM9 0x14 /* Control 9 - gain ceiling */ | |
132 | #define REG_COM10 0x15 /* Control 10 */ | |
133 | #define COM10_HSYNC 0x40 /* HSYNC instead of HREF */ | |
134 | #define COM10_PCLK_HB 0x20 /* Suppress PCLK on horiz blank */ | |
135 | #define COM10_HREF_REV 0x08 /* Reverse HREF */ | |
136 | #define COM10_VS_LEAD 0x04 /* VSYNC on clock leading edge */ | |
137 | #define COM10_VS_NEG 0x02 /* VSYNC negative */ | |
138 | #define COM10_HS_NEG 0x01 /* HSYNC negative */ | |
139 | #define REG_HSTART 0x17 /* Horiz start high bits */ | |
140 | #define REG_HSTOP 0x18 /* Horiz stop high bits */ | |
141 | #define REG_VSTART 0x19 /* Vert start high bits */ | |
142 | #define REG_VSTOP 0x1a /* Vert stop high bits */ | |
143 | #define REG_PSHFT 0x1b /* Pixel delay after HREF */ | |
144 | #define REG_MIDH 0x1c /* Manuf. ID high */ | |
145 | #define REG_MIDL 0x1d /* Manuf. ID low */ | |
146 | #define REG_MVFP 0x1e /* Mirror / vflip */ | |
147 | #define MVFP_MIRROR 0x20 /* Mirror image */ | |
148 | #define MVFP_FLIP 0x10 /* Vertical flip */ | |
149 | ||
150 | #define REG_AEW 0x24 /* AGC upper limit */ | |
151 | #define REG_AEB 0x25 /* AGC lower limit */ | |
152 | #define REG_VPT 0x26 /* AGC/AEC fast mode op region */ | |
153 | #define REG_ADVFL 0x2d /* Insert dummy lines (LSB) */ | |
154 | #define REG_ADVFH 0x2e /* Insert dummy lines (MSB) */ | |
155 | #define REG_HSYST 0x30 /* HSYNC rising edge delay */ | |
156 | #define REG_HSYEN 0x31 /* HSYNC falling edge delay */ | |
157 | #define REG_HREF 0x32 /* HREF pieces */ | |
158 | #define REG_TSLB 0x3a /* lots of stuff */ | |
159 | #define TSLB_YLAST 0x04 /* UYVY or VYUY - see com13 */ | |
160 | #define TSLB_BYTEORD 0x08 /* swap bytes in 16bit mode? */ | |
161 | #define REG_COM11 0x3b /* Control 11 */ | |
162 | #define COM11_NIGHT 0x80 /* NIght mode enable */ | |
163 | #define COM11_NMFR 0x60 /* Two bit NM frame rate */ | |
164 | #define COM11_HZAUTO 0x10 /* Auto detect 50/60 Hz */ | |
165 | #define COM11_50HZ 0x08 /* Manual 50Hz select */ | |
166 | #define COM11_EXP 0x02 | |
167 | #define REG_COM12 0x3c /* Control 12 */ | |
168 | #define COM12_HREF 0x80 /* HREF always */ | |
169 | #define REG_COM13 0x3d /* Control 13 */ | |
170 | #define COM13_GAMMA 0x80 /* Gamma enable */ | |
171 | #define COM13_UVSAT 0x40 /* UV saturation auto adjustment */ | |
172 | #define COM13_CMATRIX 0x10 /* Enable color matrix for RGB or YUV */ | |
173 | #define COM13_UVSWAP 0x01 /* V before U - w/TSLB */ | |
174 | #define REG_COM14 0x3e /* Control 14 */ | |
175 | #define COM14_DCWEN 0x10 /* DCW/PCLK-scale enable */ | |
176 | #define REG_EDGE 0x3f /* Edge enhancement factor */ | |
177 | #define REG_COM15 0x40 /* Control 15 */ | |
178 | #define COM15_R10F0 0x00 /* Data range 10 to F0 */ | |
179 | #define COM15_R01FE 0x80 /* 01 to FE */ | |
180 | #define COM15_R00FF 0xc0 /* 00 to FF */ | |
181 | #define COM15_RGB565 0x10 /* RGB565 output */ | |
182 | #define COM15_RGBFIXME 0x20 /* FIXME */ | |
183 | #define COM15_RGB555 0x30 /* RGB555 output */ | |
184 | #define REG_COM16 0x41 /* Control 16 */ | |
185 | #define COM16_AWBGAIN 0x08 /* AWB gain enable */ | |
186 | #define REG_COM17 0x42 /* Control 17 */ | |
187 | #define COM17_AECWIN 0xc0 /* AEC window - must match COM4 */ | |
188 | #define COM17_CBAR 0x08 /* DSP Color bar */ | |
189 | ||
190 | /* | |
191 | * This matrix defines how the colors are generated, must be | |
192 | * tweaked to adjust hue and saturation. | |
193 | * | |
194 | * Order: v-red, v-green, v-blue, u-red, u-green, u-blue | |
195 | * | |
196 | * They are nine-bit signed quantities, with the sign bit | |
197 | * stored in 0x58. Sign for v-red is bit 0, and up from there. | |
198 | */ | |
199 | #define REG_CMATRIX_BASE 0x4f | |
200 | #define CMATRIX_LEN 6 | |
201 | #define REG_CMATRIX_SIGN 0x58 | |
202 | ||
203 | ||
204 | #define REG_BRIGHT 0x55 /* Brightness */ | |
205 | #define REG_CONTRAS 0x56 /* Contrast control */ | |
206 | ||
207 | #define REG_GFIX 0x69 /* Fix gain control */ | |
208 | ||
209 | #define REG_RGB444 0x8c /* RGB 444 control */ | |
210 | #define R444_ENABLE 0x02 /* Turn on RGB444, overrides 5x5 */ | |
211 | #define R444_RGBX 0x01 /* Empty nibble at end */ | |
212 | ||
213 | #define REG_HAECC1 0x9f /* Hist AEC/AGC control 1 */ | |
214 | #define REG_HAECC2 0xa0 /* Hist AEC/AGC control 2 */ | |
215 | ||
216 | #define REG_BD50MAX 0xa5 /* 50hz banding step limit */ | |
217 | #define REG_HAECC3 0xa6 /* Hist AEC/AGC control 3 */ | |
218 | #define REG_HAECC4 0xa7 /* Hist AEC/AGC control 4 */ | |
219 | #define REG_HAECC5 0xa8 /* Hist AEC/AGC control 5 */ | |
220 | #define REG_HAECC6 0xa9 /* Hist AEC/AGC control 6 */ | |
221 | #define REG_HAECC7 0xaa /* Hist AEC/AGC control 7 */ | |
222 | #define REG_BD60MAX 0xab /* 60hz banding step limit */ | |
223 | ||
224 | ||
225 | ||
226 | ||
227 | /* Returns 0 if OK */ | |
fe2b8f50 | 228 | static int stk_sensor_outb(struct stk_camera *dev, u8 reg, u8 val) |
ec16dae5 JVJ |
229 | { |
230 | int i = 0; | |
231 | int tmpval = 0; | |
232 | ||
233 | if (stk_camera_write_reg(dev, STK_IIC_TX_INDEX, reg)) | |
234 | return 1; | |
235 | if (stk_camera_write_reg(dev, STK_IIC_TX_VALUE, val)) | |
236 | return 1; | |
237 | if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_TX)) | |
238 | return 1; | |
239 | do { | |
240 | if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval)) | |
241 | return 1; | |
242 | i++; | |
243 | } while (tmpval == 0 && i < MAX_RETRIES); | |
244 | if (tmpval != STK_IIC_STAT_TX_OK) { | |
245 | if (tmpval) | |
246 | STK_ERROR("stk_sensor_outb failed, status=0x%02x\n", | |
247 | tmpval); | |
248 | return 1; | |
249 | } else | |
250 | return 0; | |
251 | } | |
252 | ||
fe2b8f50 | 253 | static int stk_sensor_inb(struct stk_camera *dev, u8 reg, u8 *val) |
ec16dae5 JVJ |
254 | { |
255 | int i = 0; | |
256 | int tmpval = 0; | |
257 | ||
258 | if (stk_camera_write_reg(dev, STK_IIC_RX_INDEX, reg)) | |
259 | return 1; | |
260 | if (stk_camera_write_reg(dev, STK_IIC_OP, STK_IIC_OP_RX)) | |
261 | return 1; | |
262 | do { | |
263 | if (stk_camera_read_reg(dev, STK_IIC_STAT, &tmpval)) | |
264 | return 1; | |
265 | i++; | |
266 | } while (tmpval == 0 && i < MAX_RETRIES); | |
267 | if (tmpval != STK_IIC_STAT_RX_OK) { | |
268 | if (tmpval) | |
269 | STK_ERROR("stk_sensor_inb failed, status=0x%02x\n", | |
270 | tmpval); | |
271 | return 1; | |
272 | } | |
273 | ||
274 | if (stk_camera_read_reg(dev, STK_IIC_RX_VALUE, &tmpval)) | |
275 | return 1; | |
276 | ||
277 | *val = (u8) tmpval; | |
278 | return 0; | |
279 | } | |
280 | ||
281 | static int stk_sensor_write_regvals(struct stk_camera *dev, | |
282 | struct regval *rv) | |
283 | { | |
284 | int ret; | |
285 | if (rv == NULL) | |
286 | return 0; | |
287 | while (rv->reg != 0xff || rv->val != 0xff) { | |
288 | ret = stk_sensor_outb(dev, rv->reg, rv->val); | |
289 | if (ret != 0) | |
290 | return ret; | |
291 | rv++; | |
292 | } | |
293 | return 0; | |
294 | } | |
295 | ||
296 | int stk_sensor_sleep(struct stk_camera *dev) | |
297 | { | |
298 | u8 tmp; | |
299 | return stk_sensor_inb(dev, REG_COM2, &tmp) | |
300 | || stk_sensor_outb(dev, REG_COM2, tmp|COM2_SSLEEP); | |
301 | } | |
302 | ||
303 | int stk_sensor_wakeup(struct stk_camera *dev) | |
304 | { | |
305 | u8 tmp; | |
306 | return stk_sensor_inb(dev, REG_COM2, &tmp) | |
307 | || stk_sensor_outb(dev, REG_COM2, tmp&~COM2_SSLEEP); | |
308 | } | |
309 | ||
310 | static struct regval ov_initvals[] = { | |
311 | {REG_CLKRC, CLK_PLL}, | |
312 | {REG_COM11, 0x01}, | |
313 | {0x6a, 0x7d}, | |
314 | {REG_AECH, 0x40}, | |
315 | {REG_GAIN, 0x00}, | |
316 | {REG_BLUE, 0x80}, | |
317 | {REG_RED, 0x80}, | |
318 | /* Do not enable fast AEC for now */ | |
319 | /*{REG_COM8, COM8_FASTAEC|COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC},*/ | |
320 | {REG_COM8, COM8_AECSTEP|COM8_BFILT|COM8_AGC|COM8_AEC}, | |
321 | {0x39, 0x50}, {0x38, 0x93}, | |
322 | {0x37, 0x00}, {0x35, 0x81}, | |
323 | {REG_COM5, 0x20}, | |
324 | {REG_COM1, 0x00}, | |
325 | {REG_COM3, 0x00}, | |
326 | {REG_COM4, 0x00}, | |
327 | {REG_PSHFT, 0x00}, | |
328 | {0x16, 0x07}, | |
329 | {0x33, 0xe2}, {0x34, 0xbf}, | |
330 | {REG_COM16, 0x00}, | |
331 | {0x96, 0x04}, | |
332 | /* Gamma curve values */ | |
333 | /* { 0x7a, 0x20 }, { 0x7b, 0x10 }, | |
334 | { 0x7c, 0x1e }, { 0x7d, 0x35 }, | |
335 | { 0x7e, 0x5a }, { 0x7f, 0x69 }, | |
336 | { 0x80, 0x76 }, { 0x81, 0x80 }, | |
337 | { 0x82, 0x88 }, { 0x83, 0x8f }, | |
338 | { 0x84, 0x96 }, { 0x85, 0xa3 }, | |
339 | { 0x86, 0xaf }, { 0x87, 0xc4 }, | |
340 | { 0x88, 0xd7 }, { 0x89, 0xe8 }, | |
341 | */ | |
342 | {REG_GFIX, 0x40}, | |
343 | {0x8e, 0x00}, | |
344 | {REG_COM12, 0x73}, | |
345 | {0x8f, 0xdf}, {0x8b, 0x06}, | |
346 | {0x8c, 0x20}, | |
347 | {0x94, 0x88}, {0x95, 0x88}, | |
348 | /* {REG_COM15, 0xc1}, TODO */ | |
349 | {0x29, 0x3f}, | |
350 | {REG_COM6, 0x42}, | |
351 | {REG_BD50MAX, 0x80}, | |
352 | {REG_HAECC6, 0xb8}, {REG_HAECC7, 0x92}, | |
353 | {REG_BD60MAX, 0x0a}, | |
354 | {0x90, 0x00}, {0x91, 0x00}, | |
355 | {REG_HAECC1, 0x00}, {REG_HAECC2, 0x00}, | |
356 | {REG_AEW, 0x68}, {REG_AEB, 0x5c}, | |
357 | {REG_VPT, 0xc3}, | |
358 | {REG_COM9, 0x2e}, | |
359 | {0x2a, 0x00}, {0x2b, 0x00}, | |
360 | ||
361 | {0xff, 0xff}, /* END MARKER */ | |
362 | }; | |
363 | ||
364 | /* Probe the I2C bus and initialise the sensor chip */ | |
365 | int stk_sensor_init(struct stk_camera *dev) | |
366 | { | |
367 | u8 idl = 0; | |
368 | u8 idh = 0; | |
369 | ||
370 | if (stk_camera_write_reg(dev, STK_IIC_ENABLE, STK_IIC_ENABLE_YES) | |
371 | || stk_camera_write_reg(dev, STK_IIC_ADDR, SENSOR_ADDRESS) | |
372 | || stk_sensor_outb(dev, REG_COM7, COM7_RESET)) { | |
373 | STK_ERROR("Sensor resetting failed\n"); | |
374 | return -ENODEV; | |
375 | } | |
376 | msleep(10); | |
377 | /* Read the manufacturer ID: ov = 0x7FA2 */ | |
378 | if (stk_sensor_inb(dev, REG_MIDH, &idh) | |
379 | || stk_sensor_inb(dev, REG_MIDL, &idl)) { | |
380 | STK_ERROR("Strange error reading sensor ID\n"); | |
381 | return -ENODEV; | |
382 | } | |
1112fb68 | 383 | if (idh != 0x7f || idl != 0xa2) { |
ec16dae5 JVJ |
384 | STK_ERROR("Huh? you don't have a sensor from ovt\n"); |
385 | return -ENODEV; | |
386 | } | |
387 | if (stk_sensor_inb(dev, REG_PID, &idh) | |
388 | || stk_sensor_inb(dev, REG_VER, &idl)) { | |
389 | STK_ERROR("Could not read sensor model\n"); | |
390 | return -ENODEV; | |
391 | } | |
392 | stk_sensor_write_regvals(dev, ov_initvals); | |
393 | msleep(10); | |
394 | STK_INFO("OmniVision sensor detected, id %02X%02X" | |
395 | " at address %x\n", idh, idl, SENSOR_ADDRESS); | |
396 | return 0; | |
397 | } | |
398 | ||
399 | /* V4L2_PIX_FMT_UYVY */ | |
400 | static struct regval ov_fmt_uyvy[] = { | |
401 | {REG_TSLB, TSLB_YLAST|0x08 }, | |
402 | { 0x4f, 0x80 }, /* "matrix coefficient 1" */ | |
403 | { 0x50, 0x80 }, /* "matrix coefficient 2" */ | |
404 | { 0x51, 0 }, /* vb */ | |
405 | { 0x52, 0x22 }, /* "matrix coefficient 4" */ | |
406 | { 0x53, 0x5e }, /* "matrix coefficient 5" */ | |
407 | { 0x54, 0x80 }, /* "matrix coefficient 6" */ | |
408 | {REG_COM13, COM13_UVSAT|COM13_CMATRIX}, | |
409 | {REG_COM15, COM15_R00FF }, | |
410 | {0xff, 0xff}, /* END MARKER */ | |
411 | }; | |
1112fb68 JVJ |
412 | /* V4L2_PIX_FMT_YUYV */ |
413 | static struct regval ov_fmt_yuyv[] = { | |
414 | {REG_TSLB, 0 }, | |
415 | { 0x4f, 0x80 }, /* "matrix coefficient 1" */ | |
416 | { 0x50, 0x80 }, /* "matrix coefficient 2" */ | |
417 | { 0x51, 0 }, /* vb */ | |
418 | { 0x52, 0x22 }, /* "matrix coefficient 4" */ | |
419 | { 0x53, 0x5e }, /* "matrix coefficient 5" */ | |
420 | { 0x54, 0x80 }, /* "matrix coefficient 6" */ | |
421 | {REG_COM13, COM13_UVSAT|COM13_CMATRIX}, | |
422 | {REG_COM15, COM15_R00FF }, | |
423 | {0xff, 0xff}, /* END MARKER */ | |
424 | }; | |
ec16dae5 JVJ |
425 | |
426 | /* V4L2_PIX_FMT_RGB565X rrrrrggg gggbbbbb */ | |
427 | static struct regval ov_fmt_rgbr[] = { | |
428 | { REG_RGB444, 0 }, /* No RGB444 please */ | |
429 | {REG_TSLB, 0x00}, | |
430 | { REG_COM1, 0x0 }, | |
431 | { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */ | |
432 | { 0x4f, 0xb3 }, /* "matrix coefficient 1" */ | |
433 | { 0x50, 0xb3 }, /* "matrix coefficient 2" */ | |
434 | { 0x51, 0 }, /* vb */ | |
435 | { 0x52, 0x3d }, /* "matrix coefficient 4" */ | |
436 | { 0x53, 0xa7 }, /* "matrix coefficient 5" */ | |
437 | { 0x54, 0xe4 }, /* "matrix coefficient 6" */ | |
438 | { REG_COM13, COM13_GAMMA }, | |
439 | { REG_COM15, COM15_RGB565|COM15_R00FF }, | |
440 | { 0xff, 0xff }, | |
441 | }; | |
442 | ||
443 | /* V4L2_PIX_FMT_RGB565 gggbbbbb rrrrrggg */ | |
444 | static struct regval ov_fmt_rgbp[] = { | |
445 | { REG_RGB444, 0 }, /* No RGB444 please */ | |
446 | {REG_TSLB, TSLB_BYTEORD }, | |
447 | { REG_COM1, 0x0 }, | |
448 | { REG_COM9, 0x38 }, /* 16x gain ceiling; 0x8 is reserved bit */ | |
449 | { 0x4f, 0xb3 }, /* "matrix coefficient 1" */ | |
450 | { 0x50, 0xb3 }, /* "matrix coefficient 2" */ | |
451 | { 0x51, 0 }, /* vb */ | |
452 | { 0x52, 0x3d }, /* "matrix coefficient 4" */ | |
453 | { 0x53, 0xa7 }, /* "matrix coefficient 5" */ | |
454 | { 0x54, 0xe4 }, /* "matrix coefficient 6" */ | |
455 | { REG_COM13, COM13_GAMMA }, | |
456 | { REG_COM15, COM15_RGB565|COM15_R00FF }, | |
457 | { 0xff, 0xff }, | |
458 | }; | |
459 | ||
460 | /* V4L2_PIX_FMT_SRGGB8 */ | |
461 | static struct regval ov_fmt_bayer[] = { | |
462 | /* This changes color order */ | |
463 | {REG_TSLB, 0x40}, /* BGGR */ | |
464 | /* {REG_TSLB, 0x08}, */ /* BGGR with vertical image flipping */ | |
465 | {REG_COM15, COM15_R00FF }, | |
466 | {0xff, 0xff}, /* END MARKER */ | |
467 | }; | |
468 | /* | |
469 | * Store a set of start/stop values into the camera. | |
470 | */ | |
471 | static int stk_sensor_set_hw(struct stk_camera *dev, | |
472 | int hstart, int hstop, int vstart, int vstop) | |
473 | { | |
474 | int ret; | |
475 | unsigned char v; | |
476 | /* | |
477 | * Horizontal: 11 bits, top 8 live in hstart and hstop. Bottom 3 of | |
478 | * hstart are in href[2:0], bottom 3 of hstop in href[5:3]. There is | |
479 | * a mystery "edge offset" value in the top two bits of href. | |
480 | */ | |
481 | ret = stk_sensor_outb(dev, REG_HSTART, (hstart >> 3) & 0xff); | |
482 | ret += stk_sensor_outb(dev, REG_HSTOP, (hstop >> 3) & 0xff); | |
483 | ret += stk_sensor_inb(dev, REG_HREF, &v); | |
484 | v = (v & 0xc0) | ((hstop & 0x7) << 3) | (hstart & 0x7); | |
485 | msleep(10); | |
486 | ret += stk_sensor_outb(dev, REG_HREF, v); | |
487 | /* | |
488 | * Vertical: similar arrangement (note: this is different from ov7670.c) | |
489 | */ | |
490 | ret += stk_sensor_outb(dev, REG_VSTART, (vstart >> 3) & 0xff); | |
491 | ret += stk_sensor_outb(dev, REG_VSTOP, (vstop >> 3) & 0xff); | |
492 | ret += stk_sensor_inb(dev, REG_VREF, &v); | |
493 | v = (v & 0xc0) | ((vstop & 0x7) << 3) | (vstart & 0x7); | |
494 | msleep(10); | |
495 | ret += stk_sensor_outb(dev, REG_VREF, v); | |
496 | return ret; | |
497 | } | |
498 | ||
499 | ||
500 | int stk_sensor_configure(struct stk_camera *dev) | |
501 | { | |
502 | int com7; | |
503 | /* | |
504 | * We setup the sensor to output dummy lines in low-res modes, | |
505 | * so we don't get absurdly hight framerates. | |
506 | */ | |
507 | unsigned dummylines; | |
508 | int flip; | |
509 | struct regval *rv; | |
510 | ||
511 | switch (dev->vsettings.mode) { | |
512 | case MODE_QCIF: com7 = COM7_FMT_QCIF; | |
513 | dummylines = 604; | |
514 | break; | |
515 | case MODE_QVGA: com7 = COM7_FMT_QVGA; | |
516 | dummylines = 267; | |
517 | break; | |
518 | case MODE_CIF: com7 = COM7_FMT_CIF; | |
519 | dummylines = 412; | |
520 | break; | |
521 | case MODE_VGA: com7 = COM7_FMT_VGA; | |
522 | dummylines = 11; | |
523 | break; | |
524 | case MODE_SXGA: com7 = COM7_FMT_SXGA; | |
525 | dummylines = 0; | |
526 | break; | |
527 | default: STK_ERROR("Unsupported mode %d\n", dev->vsettings.mode); | |
528 | return -EFAULT; | |
529 | } | |
530 | switch (dev->vsettings.palette) { | |
531 | case V4L2_PIX_FMT_UYVY: | |
532 | com7 |= COM7_YUV; | |
533 | rv = ov_fmt_uyvy; | |
534 | break; | |
1112fb68 JVJ |
535 | case V4L2_PIX_FMT_YUYV: |
536 | com7 |= COM7_YUV; | |
537 | rv = ov_fmt_yuyv; | |
538 | break; | |
ec16dae5 JVJ |
539 | case V4L2_PIX_FMT_RGB565: |
540 | com7 |= COM7_RGB; | |
541 | rv = ov_fmt_rgbp; | |
542 | break; | |
543 | case V4L2_PIX_FMT_RGB565X: | |
544 | com7 |= COM7_RGB; | |
545 | rv = ov_fmt_rgbr; | |
546 | break; | |
547 | case V4L2_PIX_FMT_SBGGR8: | |
548 | com7 |= COM7_PBAYER; | |
549 | rv = ov_fmt_bayer; | |
550 | break; | |
551 | default: STK_ERROR("Unsupported colorspace\n"); | |
552 | return -EFAULT; | |
553 | } | |
554 | /*FIXME sometimes the sensor go to a bad state | |
555 | stk_sensor_write_regvals(dev, ov_initvals); */ | |
556 | stk_sensor_outb(dev, REG_COM7, com7); | |
557 | msleep(50); | |
558 | stk_sensor_write_regvals(dev, rv); | |
559 | flip = (dev->vsettings.vflip?MVFP_FLIP:0) | |
560 | | (dev->vsettings.hflip?MVFP_MIRROR:0); | |
561 | stk_sensor_outb(dev, REG_MVFP, flip); | |
562 | if (dev->vsettings.palette == V4L2_PIX_FMT_SBGGR8 | |
563 | && !dev->vsettings.vflip) | |
564 | stk_sensor_outb(dev, REG_TSLB, 0x08); | |
565 | stk_sensor_outb(dev, REG_ADVFH, dummylines >> 8); | |
566 | stk_sensor_outb(dev, REG_ADVFL, dummylines & 0xff); | |
567 | msleep(50); | |
568 | switch (dev->vsettings.mode) { | |
569 | case MODE_VGA: | |
570 | if (stk_sensor_set_hw(dev, 302, 1582, 6, 486)) | |
571 | STK_ERROR("stk_sensor_set_hw failed (VGA)\n"); | |
572 | break; | |
573 | case MODE_SXGA: | |
574 | case MODE_CIF: | |
575 | case MODE_QVGA: | |
576 | case MODE_QCIF: | |
577 | /*FIXME These settings seem ignored by the sensor | |
578 | if (stk_sensor_set_hw(dev, 220, 1500, 10, 1034)) | |
579 | STK_ERROR("stk_sensor_set_hw failed (SXGA)\n"); | |
580 | */ | |
581 | break; | |
582 | } | |
583 | msleep(10); | |
584 | return 0; | |
585 | } | |
586 | ||
587 | int stk_sensor_set_brightness(struct stk_camera *dev, int br) | |
588 | { | |
589 | if (br < 0 || br > 0xff) | |
590 | return -EINVAL; | |
591 | stk_sensor_outb(dev, REG_AEB, max(0x00, br - 6)); | |
592 | stk_sensor_outb(dev, REG_AEW, min(0xff, br + 6)); | |
593 | return 0; | |
594 | } | |
595 |