1/*************************************************************************** 2 * Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera * 3 * Controllers * 4 * * 5 * Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio * 6 * <medaglia@undl.org.br> * 7 * http://cadu.homelinux.com:8080/ * 8 * * 9 * Support for SN9C103, DAC Magnitude, exposure and green gain controls * 10 * added by Luca Risolia <luca.risolia@studio.unibo.it> * 11 * * 12 * This program is free software; you can redistribute it and/or modify * 13 * it under the terms of the GNU General Public License as published by * 14 * the Free Software Foundation; either version 2 of the License, or * 15 * (at your option) any later version. * 16 * * 17 * This program is distributed in the hope that it will be useful, * 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 20 * GNU General Public License for more details. * 21 * * 22 * You should have received a copy of the GNU General Public License * 23 * along with this program; if not, write to the Free Software * 24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * 25 ***************************************************************************/ 26 27#include <linux/delay.h> 28#include "sn9c102_sensor.h" 29 30 31static int pas202bcb_init(struct sn9c102_device* cam) 32{ 33 int err = 0; 34 35 switch (sn9c102_get_bridge(cam)) { 36 case BRIDGE_SN9C101: 37 case BRIDGE_SN9C102: 38 err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11}, 39 {0x00, 0x14}, {0x20, 0x17}, 40 {0x30, 0x19}, {0x09, 0x18}); 41 break; 42 case BRIDGE_SN9C103: 43 err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03}, 44 {0x1a, 0x04}, {0x20, 0x05}, 45 {0x20, 0x06}, {0x20, 0x07}, 46 {0x00, 0x10}, {0x00, 0x11}, 47 {0x00, 0x14}, {0x20, 0x17}, 48 {0x30, 0x19}, {0x09, 0x18}, 49 {0x02, 0x1c}, {0x03, 0x1d}, 50 {0x0f, 0x1e}, {0x0c, 0x1f}, 51 {0x00, 0x20}, {0x10, 0x21}, 52 {0x20, 0x22}, {0x30, 0x23}, 53 {0x40, 0x24}, {0x50, 0x25}, 54 {0x60, 0x26}, {0x70, 0x27}, 55 {0x80, 0x28}, {0x90, 0x29}, 56 {0xa0, 0x2a}, {0xb0, 0x2b}, 57 {0xc0, 0x2c}, {0xd0, 0x2d}, 58 {0xe0, 0x2e}, {0xf0, 0x2f}, 59 {0xff, 0x30}); 60 break; 61 default: 62 break; 63 } 64 65 err += sn9c102_i2c_write(cam, 0x02, 0x14); 66 err += sn9c102_i2c_write(cam, 0x03, 0x40); 67 err += sn9c102_i2c_write(cam, 0x0d, 0x2c); 68 err += sn9c102_i2c_write(cam, 0x0e, 0x01); 69 err += sn9c102_i2c_write(cam, 0x0f, 0xa9); 70 err += sn9c102_i2c_write(cam, 0x10, 0x08); 71 err += sn9c102_i2c_write(cam, 0x13, 0x63); 72 err += sn9c102_i2c_write(cam, 0x15, 0x70); 73 err += sn9c102_i2c_write(cam, 0x11, 0x01); 74 75 msleep(400); 76 77 return err; 78} 79 80 81static int pas202bcb_get_ctrl(struct sn9c102_device* cam, 82 struct v4l2_control* ctrl) 83{ 84 switch (ctrl->id) { 85 case V4L2_CID_EXPOSURE: 86 { 87 int r1 = sn9c102_i2c_read(cam, 0x04), 88 r2 = sn9c102_i2c_read(cam, 0x05); 89 if (r1 < 0 || r2 < 0) 90 return -EIO; 91 ctrl->value = (r1 << 6) | (r2 & 0x3f); 92 } 93 return 0; 94 case V4L2_CID_RED_BALANCE: 95 if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0) 96 return -EIO; 97 ctrl->value &= 0x0f; 98 return 0; 99 case V4L2_CID_BLUE_BALANCE: 100 if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0) 101 return -EIO; 102 ctrl->value &= 0x0f; 103 return 0; 104 case V4L2_CID_GAIN: 105 if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0) 106 return -EIO; 107 ctrl->value &= 0x1f; 108 return 0; 109 case SN9C102_V4L2_CID_GREEN_BALANCE: 110 if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0) 111 return -EIO; 112 ctrl->value &= 0x0f; 113 return 0; 114 case SN9C102_V4L2_CID_DAC_MAGNITUDE: 115 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0) 116 return -EIO; 117 return 0; 118 default: 119 return -EINVAL; 120 } 121} 122 123 124static int pas202bcb_set_pix_format(struct sn9c102_device* cam, 125 const struct v4l2_pix_format* pix) 126{ 127 int err = 0; 128 129 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) 130 err += sn9c102_write_reg(cam, 0x28, 0x17); 131 else 132 err += sn9c102_write_reg(cam, 0x20, 0x17); 133 134 return err; 135} 136 137 138static int pas202bcb_set_ctrl(struct sn9c102_device* cam, 139 const struct v4l2_control* ctrl) 140{ 141 int err = 0; 142 143 switch (ctrl->id) { 144 case V4L2_CID_EXPOSURE: 145 err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6); 146 err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f); 147 break; 148 case V4L2_CID_RED_BALANCE: 149 err += sn9c102_i2c_write(cam, 0x09, ctrl->value); 150 break; 151 case V4L2_CID_BLUE_BALANCE: 152 err += sn9c102_i2c_write(cam, 0x07, ctrl->value); 153 break; 154 case V4L2_CID_GAIN: 155 err += sn9c102_i2c_write(cam, 0x10, ctrl->value); 156 break; 157 case SN9C102_V4L2_CID_GREEN_BALANCE: 158 err += sn9c102_i2c_write(cam, 0x08, ctrl->value); 159 break; 160 case SN9C102_V4L2_CID_DAC_MAGNITUDE: 161 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value); 162 break; 163 default: 164 return -EINVAL; 165 } 166 err += sn9c102_i2c_write(cam, 0x11, 0x01); 167 168 return err ? -EIO : 0; 169} 170 171 172static int pas202bcb_set_crop(struct sn9c102_device* cam, 173 const struct v4l2_rect* rect) 174{ 175 struct sn9c102_sensor* s = sn9c102_get_sensor(cam); 176 int err = 0; 177 u8 h_start = 0, 178 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3; 179 180 switch (sn9c102_get_bridge(cam)) { 181 case BRIDGE_SN9C101: 182 case BRIDGE_SN9C102: 183 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4; 184 break; 185 case BRIDGE_SN9C103: 186 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3; 187 break; 188 default: 189 break; 190 } 191 192 err += sn9c102_write_reg(cam, h_start, 0x12); 193 err += sn9c102_write_reg(cam, v_start, 0x13); 194 195 return err; 196} 197 198 199static const struct sn9c102_sensor pas202bcb = { 200 .name = "PAS202BCB", 201 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>", 202 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103, 203 .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE, 204 .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ, 205 .interface = SN9C102_I2C_2WIRES, 206 .i2c_slave_id = 0x40, 207 .init = &pas202bcb_init, 208 .qctrl = { 209 { 210 .id = V4L2_CID_EXPOSURE, 211 .type = V4L2_CTRL_TYPE_INTEGER, 212 .name = "exposure", 213 .minimum = 0x01e5, 214 .maximum = 0x3fff, 215 .step = 0x0001, 216 .default_value = 0x01e5, 217 .flags = 0, 218 }, 219 { 220 .id = V4L2_CID_GAIN, 221 .type = V4L2_CTRL_TYPE_INTEGER, 222 .name = "global gain", 223 .minimum = 0x00, 224 .maximum = 0x1f, 225 .step = 0x01, 226 .default_value = 0x0b, 227 .flags = 0, 228 }, 229 { 230 .id = V4L2_CID_RED_BALANCE, 231 .type = V4L2_CTRL_TYPE_INTEGER, 232 .name = "red balance", 233 .minimum = 0x00, 234 .maximum = 0x0f, 235 .step = 0x01, 236 .default_value = 0x00, 237 .flags = 0, 238 }, 239 { 240 .id = V4L2_CID_BLUE_BALANCE, 241 .type = V4L2_CTRL_TYPE_INTEGER, 242 .name = "blue balance", 243 .minimum = 0x00, 244 .maximum = 0x0f, 245 .step = 0x01, 246 .default_value = 0x05, 247 .flags = 0, 248 }, 249 { 250 .id = SN9C102_V4L2_CID_GREEN_BALANCE, 251 .type = V4L2_CTRL_TYPE_INTEGER, 252 .name = "green balance", 253 .minimum = 0x00, 254 .maximum = 0x0f, 255 .step = 0x01, 256 .default_value = 0x00, 257 .flags = 0, 258 }, 259 { 260 .id = SN9C102_V4L2_CID_DAC_MAGNITUDE, 261 .type = V4L2_CTRL_TYPE_INTEGER, 262 .name = "DAC magnitude", 263 .minimum = 0x00, 264 .maximum = 0xff, 265 .step = 0x01, 266 .default_value = 0x04, 267 .flags = 0, 268 }, 269 }, 270 .get_ctrl = &pas202bcb_get_ctrl, 271 .set_ctrl = &pas202bcb_set_ctrl, 272 .cropcap = { 273 .bounds = { 274 .left = 0, 275 .top = 0, 276 .width = 640, 277 .height = 480, 278 }, 279 .defrect = { 280 .left = 0, 281 .top = 0, 282 .width = 640, 283 .height = 480, 284 }, 285 }, 286 .set_crop = &pas202bcb_set_crop, 287 .pix_format = { 288 .width = 640, 289 .height = 480, 290 .pixelformat = V4L2_PIX_FMT_SBGGR8, 291 .priv = 8, 292 }, 293 .set_pix_format = &pas202bcb_set_pix_format 294}; 295 296 297int sn9c102_probe_pas202bcb(struct sn9c102_device* cam) 298{ 299 int r0 = 0, r1 = 0, err = 0; 300 unsigned int pid = 0; 301 302 /* 303 * Minimal initialization to enable the I2C communication 304 * NOTE: do NOT change the values! 305 */ 306 switch (sn9c102_get_bridge(cam)) { 307 case BRIDGE_SN9C101: 308 case BRIDGE_SN9C102: 309 err = sn9c102_write_const_regs(cam, 310 {0x01, 0x01}, /* power down */ 311 {0x40, 0x01}, /* power on */ 312 {0x28, 0x17});/* clock 24 MHz */ 313 break; 314 case BRIDGE_SN9C103: /* do _not_ change anything! */ 315 err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x44, 0x01}, 316 {0x44, 0x02}, {0x29, 0x17}); 317 break; 318 default: 319 break; 320 } 321 322 r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00); 323 r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01); 324 325 if (err || r0 < 0 || r1 < 0) 326 return -EIO; 327 328 pid = (r0 << 4) | ((r1 & 0xf0) >> 4); 329 if (pid != 0x017) 330 return -ENODEV; 331 332 sn9c102_attach_sensor(cam, &pas202bcb); 333 334 return 0; 335} 336