1/*************************************************************************** 2 * Plug-in for PAS106B image sensor connected to the SN9C1xx PC Camera * 3 * Controllers * 4 * * 5 * Copyright (C) 2004-2007 by Luca Risolia <luca.risolia@studio.unibo.it> * 6 * * 7 * This program is free software; you can redistribute it and/or modify * 8 * it under the terms of the GNU General Public License as published by * 9 * the Free Software Foundation; either version 2 of the License, or * 10 * (at your option) any later version. * 11 * * 12 * This program is distributed in the hope that it will be useful, * 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 15 * GNU General Public License for more details. * 16 * * 17 * You should have received a copy of the GNU General Public License * 18 * along with this program; if not, write to the Free Software * 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * 20 ***************************************************************************/ 21 22#include <linux/delay.h> 23#include "sn9c102_sensor.h" 24#include "sn9c102_devtable.h" 25 26 27static int pas106b_init(struct sn9c102_device* cam) 28{ 29 int err = 0; 30 31 err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11}, 32 {0x00, 0x14}, {0x20, 0x17}, 33 {0x20, 0x19}, {0x09, 0x18}); 34 35 err += sn9c102_i2c_write(cam, 0x02, 0x0c); 36 err += sn9c102_i2c_write(cam, 0x05, 0x5a); 37 err += sn9c102_i2c_write(cam, 0x06, 0x88); 38 err += sn9c102_i2c_write(cam, 0x07, 0x80); 39 err += sn9c102_i2c_write(cam, 0x10, 0x06); 40 err += sn9c102_i2c_write(cam, 0x11, 0x06); 41 err += sn9c102_i2c_write(cam, 0x12, 0x00); 42 err += sn9c102_i2c_write(cam, 0x14, 0x02); 43 err += sn9c102_i2c_write(cam, 0x13, 0x01); 44 45 msleep(400); 46 47 return err; 48} 49 50 51static int pas106b_get_ctrl(struct sn9c102_device* cam, 52 struct v4l2_control* ctrl) 53{ 54 switch (ctrl->id) { 55 case V4L2_CID_EXPOSURE: 56 { 57 int r1 = sn9c102_i2c_read(cam, 0x03), 58 r2 = sn9c102_i2c_read(cam, 0x04); 59 if (r1 < 0 || r2 < 0) 60 return -EIO; 61 ctrl->value = (r1 << 4) | (r2 & 0x0f); 62 } 63 return 0; 64 case V4L2_CID_RED_BALANCE: 65 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0) 66 return -EIO; 67 ctrl->value &= 0x1f; 68 return 0; 69 case V4L2_CID_BLUE_BALANCE: 70 if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0) 71 return -EIO; 72 ctrl->value &= 0x1f; 73 return 0; 74 case V4L2_CID_GAIN: 75 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0e)) < 0) 76 return -EIO; 77 ctrl->value &= 0x1f; 78 return 0; 79 case V4L2_CID_CONTRAST: 80 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0f)) < 0) 81 return -EIO; 82 ctrl->value &= 0x07; 83 return 0; 84 case SN9C102_V4L2_CID_GREEN_BALANCE: 85 if ((ctrl->value = sn9c102_i2c_read(cam, 0x0a)) < 0) 86 return -EIO; 87 ctrl->value = (ctrl->value & 0x1f) << 1; 88 return 0; 89 case SN9C102_V4L2_CID_DAC_MAGNITUDE: 90 if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0) 91 return -EIO; 92 ctrl->value &= 0xf8; 93 return 0; 94 default: 95 return -EINVAL; 96 } 97} 98 99 100static int pas106b_set_ctrl(struct sn9c102_device* cam, 101 const struct v4l2_control* ctrl) 102{ 103 int err = 0; 104 105 switch (ctrl->id) { 106 case V4L2_CID_EXPOSURE: 107 err += sn9c102_i2c_write(cam, 0x03, ctrl->value >> 4); 108 err += sn9c102_i2c_write(cam, 0x04, ctrl->value & 0x0f); 109 break; 110 case V4L2_CID_RED_BALANCE: 111 err += sn9c102_i2c_write(cam, 0x0c, ctrl->value); 112 break; 113 case V4L2_CID_BLUE_BALANCE: 114 err += sn9c102_i2c_write(cam, 0x09, ctrl->value); 115 break; 116 case V4L2_CID_GAIN: 117 err += sn9c102_i2c_write(cam, 0x0e, ctrl->value); 118 break; 119 case V4L2_CID_CONTRAST: 120 err += sn9c102_i2c_write(cam, 0x0f, ctrl->value); 121 break; 122 case SN9C102_V4L2_CID_GREEN_BALANCE: 123 err += sn9c102_i2c_write(cam, 0x0a, ctrl->value >> 1); 124 err += sn9c102_i2c_write(cam, 0x0b, ctrl->value >> 1); 125 break; 126 case SN9C102_V4L2_CID_DAC_MAGNITUDE: 127 err += sn9c102_i2c_write(cam, 0x08, ctrl->value << 3); 128 break; 129 default: 130 return -EINVAL; 131 } 132 err += sn9c102_i2c_write(cam, 0x13, 0x01); 133 134 return err ? -EIO : 0; 135} 136 137 138static int pas106b_set_crop(struct sn9c102_device* cam, 139 const struct v4l2_rect* rect) 140{ 141 struct sn9c102_sensor* s = sn9c102_get_sensor(cam); 142 int err = 0; 143 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4, 144 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3; 145 146 err += sn9c102_write_reg(cam, h_start, 0x12); 147 err += sn9c102_write_reg(cam, v_start, 0x13); 148 149 return err; 150} 151 152 153static int pas106b_set_pix_format(struct sn9c102_device* cam, 154 const struct v4l2_pix_format* pix) 155{ 156 int err = 0; 157 158 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) 159 err += sn9c102_write_reg(cam, 0x2c, 0x17); 160 else 161 err += sn9c102_write_reg(cam, 0x20, 0x17); 162 163 return err; 164} 165 166 167static const struct sn9c102_sensor pas106b = { 168 .name = "PAS106B", 169 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>", 170 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102, 171 .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE, 172 .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ, 173 .interface = SN9C102_I2C_2WIRES, 174 .i2c_slave_id = 0x40, 175 .init = &pas106b_init, 176 .qctrl = { 177 { 178 .id = V4L2_CID_EXPOSURE, 179 .type = V4L2_CTRL_TYPE_INTEGER, 180 .name = "exposure", 181 .minimum = 0x125, 182 .maximum = 0xfff, 183 .step = 0x001, 184 .default_value = 0x140, 185 .flags = 0, 186 }, 187 { 188 .id = V4L2_CID_GAIN, 189 .type = V4L2_CTRL_TYPE_INTEGER, 190 .name = "global gain", 191 .minimum = 0x00, 192 .maximum = 0x1f, 193 .step = 0x01, 194 .default_value = 0x0d, 195 .flags = 0, 196 }, 197 { 198 .id = V4L2_CID_CONTRAST, 199 .type = V4L2_CTRL_TYPE_INTEGER, 200 .name = "contrast", 201 .minimum = 0x00, 202 .maximum = 0x07, 203 .step = 0x01, 204 .default_value = 0x00, /* 0x00~0x03 have same effect */ 205 .flags = 0, 206 }, 207 { 208 .id = V4L2_CID_RED_BALANCE, 209 .type = V4L2_CTRL_TYPE_INTEGER, 210 .name = "red balance", 211 .minimum = 0x00, 212 .maximum = 0x1f, 213 .step = 0x01, 214 .default_value = 0x04, 215 .flags = 0, 216 }, 217 { 218 .id = V4L2_CID_BLUE_BALANCE, 219 .type = V4L2_CTRL_TYPE_INTEGER, 220 .name = "blue balance", 221 .minimum = 0x00, 222 .maximum = 0x1f, 223 .step = 0x01, 224 .default_value = 0x06, 225 .flags = 0, 226 }, 227 { 228 .id = SN9C102_V4L2_CID_GREEN_BALANCE, 229 .type = V4L2_CTRL_TYPE_INTEGER, 230 .name = "green balance", 231 .minimum = 0x00, 232 .maximum = 0x3e, 233 .step = 0x02, 234 .default_value = 0x02, 235 .flags = 0, 236 }, 237 { 238 .id = SN9C102_V4L2_CID_DAC_MAGNITUDE, 239 .type = V4L2_CTRL_TYPE_INTEGER, 240 .name = "DAC magnitude", 241 .minimum = 0x00, 242 .maximum = 0x1f, 243 .step = 0x01, 244 .default_value = 0x01, 245 .flags = 0, 246 }, 247 }, 248 .get_ctrl = &pas106b_get_ctrl, 249 .set_ctrl = &pas106b_set_ctrl, 250 .cropcap = { 251 .bounds = { 252 .left = 0, 253 .top = 0, 254 .width = 352, 255 .height = 288, 256 }, 257 .defrect = { 258 .left = 0, 259 .top = 0, 260 .width = 352, 261 .height = 288, 262 }, 263 }, 264 .set_crop = &pas106b_set_crop, 265 .pix_format = { 266 .width = 352, 267 .height = 288, 268 .pixelformat = V4L2_PIX_FMT_SBGGR8, 269 .priv = 8, /* we use this field as 'bits per pixel' */ 270 }, 271 .set_pix_format = &pas106b_set_pix_format 272}; 273 274 275int sn9c102_probe_pas106b(struct sn9c102_device* cam) 276{ 277 int r0 = 0, r1 = 0; 278 unsigned int pid = 0; 279 280 /* 281 Minimal initialization to enable the I2C communication 282 NOTE: do NOT change the values! 283 */ 284 if (sn9c102_write_const_regs(cam, 285 {0x01, 0x01}, /* sensor power down */ 286 {0x00, 0x01}, /* sensor power on */ 287 {0x28, 0x17})) /* sensor clock at 24 MHz */ 288 return -EIO; 289 290 r0 = sn9c102_i2c_try_read(cam, &pas106b, 0x00); 291 r1 = sn9c102_i2c_try_read(cam, &pas106b, 0x01); 292 if (r0 < 0 || r1 < 0) 293 return -EIO; 294 295 pid = (r0 << 11) | ((r1 & 0xf0) >> 4); 296 if (pid != 0x007) 297 return -ENODEV; 298 299 sn9c102_attach_sensor(cam, &pas106b); 300 301 return 0; 302} 303