sn9c102_hv7131d.c revision f327ebbd004fb2f08291ca4c6637f5f27319683c
1/*************************************************************************** 2 * Plug-in for HV7131D 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 "sn9c102_sensor.h" 23 24 25static struct sn9c102_sensor hv7131d; 26 27 28static int hv7131d_init(struct sn9c102_device* cam) 29{ 30 int err = 0; 31 32 err += sn9c102_write_reg(cam, 0x00, 0x10); 33 err += sn9c102_write_reg(cam, 0x00, 0x11); 34 err += sn9c102_write_reg(cam, 0x00, 0x14); 35 err += sn9c102_write_reg(cam, 0x60, 0x17); 36 err += sn9c102_write_reg(cam, 0x0e, 0x18); 37 err += sn9c102_write_reg(cam, 0xf2, 0x19); 38 39 err += sn9c102_i2c_write(cam, 0x01, 0x04); 40 err += sn9c102_i2c_write(cam, 0x02, 0x00); 41 err += sn9c102_i2c_write(cam, 0x28, 0x00); 42 43 return err; 44} 45 46 47static int hv7131d_get_ctrl(struct sn9c102_device* cam, 48 struct v4l2_control* ctrl) 49{ 50 switch (ctrl->id) { 51 case V4L2_CID_EXPOSURE: 52 { 53 int r1 = sn9c102_i2c_read(cam, 0x26), 54 r2 = sn9c102_i2c_read(cam, 0x27); 55 if (r1 < 0 || r2 < 0) 56 return -EIO; 57 ctrl->value = (r1 << 8) | (r2 & 0xff); 58 } 59 return 0; 60 case V4L2_CID_RED_BALANCE: 61 if ((ctrl->value = sn9c102_i2c_read(cam, 0x31)) < 0) 62 return -EIO; 63 ctrl->value = 0x3f - (ctrl->value & 0x3f); 64 return 0; 65 case V4L2_CID_BLUE_BALANCE: 66 if ((ctrl->value = sn9c102_i2c_read(cam, 0x33)) < 0) 67 return -EIO; 68 ctrl->value = 0x3f - (ctrl->value & 0x3f); 69 return 0; 70 case SN9C102_V4L2_CID_GREEN_BALANCE: 71 if ((ctrl->value = sn9c102_i2c_read(cam, 0x32)) < 0) 72 return -EIO; 73 ctrl->value = 0x3f - (ctrl->value & 0x3f); 74 return 0; 75 case SN9C102_V4L2_CID_RESET_LEVEL: 76 if ((ctrl->value = sn9c102_i2c_read(cam, 0x30)) < 0) 77 return -EIO; 78 ctrl->value &= 0x3f; 79 return 0; 80 case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE: 81 if ((ctrl->value = sn9c102_i2c_read(cam, 0x34)) < 0) 82 return -EIO; 83 ctrl->value &= 0x07; 84 return 0; 85 default: 86 return -EINVAL; 87 } 88} 89 90 91static int hv7131d_set_ctrl(struct sn9c102_device* cam, 92 const struct v4l2_control* ctrl) 93{ 94 int err = 0; 95 96 switch (ctrl->id) { 97 case V4L2_CID_EXPOSURE: 98 err += sn9c102_i2c_write(cam, 0x26, ctrl->value >> 8); 99 err += sn9c102_i2c_write(cam, 0x27, ctrl->value & 0xff); 100 break; 101 case V4L2_CID_RED_BALANCE: 102 err += sn9c102_i2c_write(cam, 0x31, 0x3f - ctrl->value); 103 break; 104 case V4L2_CID_BLUE_BALANCE: 105 err += sn9c102_i2c_write(cam, 0x33, 0x3f - ctrl->value); 106 break; 107 case SN9C102_V4L2_CID_GREEN_BALANCE: 108 err += sn9c102_i2c_write(cam, 0x32, 0x3f - ctrl->value); 109 break; 110 case SN9C102_V4L2_CID_RESET_LEVEL: 111 err += sn9c102_i2c_write(cam, 0x30, ctrl->value); 112 break; 113 case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE: 114 err += sn9c102_i2c_write(cam, 0x34, ctrl->value); 115 break; 116 default: 117 return -EINVAL; 118 } 119 120 return err ? -EIO : 0; 121} 122 123 124static int hv7131d_set_crop(struct sn9c102_device* cam, 125 const struct v4l2_rect* rect) 126{ 127 struct sn9c102_sensor* s = sn9c102_get_sensor(cam); 128 int err = 0; 129 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 2, 130 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2; 131 132 err += sn9c102_write_reg(cam, h_start, 0x12); 133 err += sn9c102_write_reg(cam, v_start, 0x13); 134 135 return err; 136} 137 138 139static int hv7131d_set_pix_format(struct sn9c102_device* cam, 140 const struct v4l2_pix_format* pix) 141{ 142 int err = 0; 143 144 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) 145 err += sn9c102_write_reg(cam, 0x42, 0x19); 146 else 147 err += sn9c102_write_reg(cam, 0xf2, 0x19); 148 149 return err; 150} 151 152 153static struct sn9c102_sensor hv7131d = { 154 .name = "HV7131D", 155 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>", 156 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103, 157 .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE, 158 .frequency = SN9C102_I2C_100KHZ, 159 .interface = SN9C102_I2C_2WIRES, 160 .i2c_slave_id = 0x11, 161 .init = &hv7131d_init, 162 .qctrl = { 163 { 164 .id = V4L2_CID_EXPOSURE, 165 .type = V4L2_CTRL_TYPE_INTEGER, 166 .name = "exposure", 167 .minimum = 0x0250, 168 .maximum = 0xffff, 169 .step = 0x0001, 170 .default_value = 0x0250, 171 .flags = 0, 172 }, 173 { 174 .id = V4L2_CID_RED_BALANCE, 175 .type = V4L2_CTRL_TYPE_INTEGER, 176 .name = "red balance", 177 .minimum = 0x00, 178 .maximum = 0x3f, 179 .step = 0x01, 180 .default_value = 0x00, 181 .flags = 0, 182 }, 183 { 184 .id = V4L2_CID_BLUE_BALANCE, 185 .type = V4L2_CTRL_TYPE_INTEGER, 186 .name = "blue balance", 187 .minimum = 0x00, 188 .maximum = 0x3f, 189 .step = 0x01, 190 .default_value = 0x20, 191 .flags = 0, 192 }, 193 { 194 .id = SN9C102_V4L2_CID_GREEN_BALANCE, 195 .type = V4L2_CTRL_TYPE_INTEGER, 196 .name = "green balance", 197 .minimum = 0x00, 198 .maximum = 0x3f, 199 .step = 0x01, 200 .default_value = 0x1e, 201 .flags = 0, 202 }, 203 { 204 .id = SN9C102_V4L2_CID_RESET_LEVEL, 205 .type = V4L2_CTRL_TYPE_INTEGER, 206 .name = "reset level", 207 .minimum = 0x19, 208 .maximum = 0x3f, 209 .step = 0x01, 210 .default_value = 0x30, 211 .flags = 0, 212 }, 213 { 214 .id = SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE, 215 .type = V4L2_CTRL_TYPE_INTEGER, 216 .name = "pixel bias voltage", 217 .minimum = 0x00, 218 .maximum = 0x07, 219 .step = 0x01, 220 .default_value = 0x02, 221 .flags = 0, 222 }, 223 }, 224 .get_ctrl = &hv7131d_get_ctrl, 225 .set_ctrl = &hv7131d_set_ctrl, 226 .cropcap = { 227 .bounds = { 228 .left = 0, 229 .top = 0, 230 .width = 640, 231 .height = 480, 232 }, 233 .defrect = { 234 .left = 0, 235 .top = 0, 236 .width = 640, 237 .height = 480, 238 }, 239 }, 240 .set_crop = &hv7131d_set_crop, 241 .pix_format = { 242 .width = 640, 243 .height = 480, 244 .pixelformat = V4L2_PIX_FMT_SBGGR8, 245 .priv = 8, 246 }, 247 .set_pix_format = &hv7131d_set_pix_format 248}; 249 250 251int sn9c102_probe_hv7131d(struct sn9c102_device* cam) 252{ 253 int r0 = 0, r1 = 0, err = 0; 254 255 err += sn9c102_write_reg(cam, 0x01, 0x01); 256 err += sn9c102_write_reg(cam, 0x00, 0x01); 257 err += sn9c102_write_reg(cam, 0x28, 0x17); 258 if (err) 259 return -EIO; 260 261 r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00); 262 r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01); 263 if (r0 < 0 || r1 < 0) 264 return -EIO; 265 266 if (r0 != 0x00 && r1 != 0x04) 267 return -ENODEV; 268 269 sn9c102_attach_sensor(cam, &hv7131d); 270 271 return 0; 272} 273