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#include "sn9c102_devtable.h" 24 25 26static int hv7131d_init(struct sn9c102_device* cam) 27{ 28 int err; 29 30 err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11}, 31 {0x00, 0x14}, {0x60, 0x17}, 32 {0x0e, 0x18}, {0xf2, 0x19}); 33 34 err += sn9c102_i2c_write(cam, 0x01, 0x04); 35 err += sn9c102_i2c_write(cam, 0x02, 0x00); 36 err += sn9c102_i2c_write(cam, 0x28, 0x00); 37 38 return err; 39} 40 41 42static int hv7131d_get_ctrl(struct sn9c102_device* cam, 43 struct v4l2_control* ctrl) 44{ 45 switch (ctrl->id) { 46 case V4L2_CID_EXPOSURE: 47 { 48 int r1 = sn9c102_i2c_read(cam, 0x26), 49 r2 = sn9c102_i2c_read(cam, 0x27); 50 if (r1 < 0 || r2 < 0) 51 return -EIO; 52 ctrl->value = (r1 << 8) | (r2 & 0xff); 53 } 54 return 0; 55 case V4L2_CID_RED_BALANCE: 56 if ((ctrl->value = sn9c102_i2c_read(cam, 0x31)) < 0) 57 return -EIO; 58 ctrl->value = 0x3f - (ctrl->value & 0x3f); 59 return 0; 60 case V4L2_CID_BLUE_BALANCE: 61 if ((ctrl->value = sn9c102_i2c_read(cam, 0x33)) < 0) 62 return -EIO; 63 ctrl->value = 0x3f - (ctrl->value & 0x3f); 64 return 0; 65 case SN9C102_V4L2_CID_GREEN_BALANCE: 66 if ((ctrl->value = sn9c102_i2c_read(cam, 0x32)) < 0) 67 return -EIO; 68 ctrl->value = 0x3f - (ctrl->value & 0x3f); 69 return 0; 70 case SN9C102_V4L2_CID_RESET_LEVEL: 71 if ((ctrl->value = sn9c102_i2c_read(cam, 0x30)) < 0) 72 return -EIO; 73 ctrl->value &= 0x3f; 74 return 0; 75 case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE: 76 if ((ctrl->value = sn9c102_i2c_read(cam, 0x34)) < 0) 77 return -EIO; 78 ctrl->value &= 0x07; 79 return 0; 80 default: 81 return -EINVAL; 82 } 83} 84 85 86static int hv7131d_set_ctrl(struct sn9c102_device* cam, 87 const struct v4l2_control* ctrl) 88{ 89 int err = 0; 90 91 switch (ctrl->id) { 92 case V4L2_CID_EXPOSURE: 93 err += sn9c102_i2c_write(cam, 0x26, ctrl->value >> 8); 94 err += sn9c102_i2c_write(cam, 0x27, ctrl->value & 0xff); 95 break; 96 case V4L2_CID_RED_BALANCE: 97 err += sn9c102_i2c_write(cam, 0x31, 0x3f - ctrl->value); 98 break; 99 case V4L2_CID_BLUE_BALANCE: 100 err += sn9c102_i2c_write(cam, 0x33, 0x3f - ctrl->value); 101 break; 102 case SN9C102_V4L2_CID_GREEN_BALANCE: 103 err += sn9c102_i2c_write(cam, 0x32, 0x3f - ctrl->value); 104 break; 105 case SN9C102_V4L2_CID_RESET_LEVEL: 106 err += sn9c102_i2c_write(cam, 0x30, ctrl->value); 107 break; 108 case SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE: 109 err += sn9c102_i2c_write(cam, 0x34, ctrl->value); 110 break; 111 default: 112 return -EINVAL; 113 } 114 115 return err ? -EIO : 0; 116} 117 118 119static int hv7131d_set_crop(struct sn9c102_device* cam, 120 const struct v4l2_rect* rect) 121{ 122 struct sn9c102_sensor* s = sn9c102_get_sensor(cam); 123 int err = 0; 124 u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 2, 125 v_start = (u8)(rect->top - s->cropcap.bounds.top) + 2; 126 127 err += sn9c102_write_reg(cam, h_start, 0x12); 128 err += sn9c102_write_reg(cam, v_start, 0x13); 129 130 return err; 131} 132 133 134static int hv7131d_set_pix_format(struct sn9c102_device* cam, 135 const struct v4l2_pix_format* pix) 136{ 137 int err = 0; 138 139 if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) 140 err += sn9c102_write_reg(cam, 0x42, 0x19); 141 else 142 err += sn9c102_write_reg(cam, 0xf2, 0x19); 143 144 return err; 145} 146 147 148static const struct sn9c102_sensor hv7131d = { 149 .name = "HV7131D", 150 .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>", 151 .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102, 152 .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE, 153 .frequency = SN9C102_I2C_100KHZ, 154 .interface = SN9C102_I2C_2WIRES, 155 .i2c_slave_id = 0x11, 156 .init = &hv7131d_init, 157 .qctrl = { 158 { 159 .id = V4L2_CID_EXPOSURE, 160 .type = V4L2_CTRL_TYPE_INTEGER, 161 .name = "exposure", 162 .minimum = 0x0250, 163 .maximum = 0xffff, 164 .step = 0x0001, 165 .default_value = 0x0250, 166 .flags = 0, 167 }, 168 { 169 .id = V4L2_CID_RED_BALANCE, 170 .type = V4L2_CTRL_TYPE_INTEGER, 171 .name = "red balance", 172 .minimum = 0x00, 173 .maximum = 0x3f, 174 .step = 0x01, 175 .default_value = 0x00, 176 .flags = 0, 177 }, 178 { 179 .id = V4L2_CID_BLUE_BALANCE, 180 .type = V4L2_CTRL_TYPE_INTEGER, 181 .name = "blue balance", 182 .minimum = 0x00, 183 .maximum = 0x3f, 184 .step = 0x01, 185 .default_value = 0x20, 186 .flags = 0, 187 }, 188 { 189 .id = SN9C102_V4L2_CID_GREEN_BALANCE, 190 .type = V4L2_CTRL_TYPE_INTEGER, 191 .name = "green balance", 192 .minimum = 0x00, 193 .maximum = 0x3f, 194 .step = 0x01, 195 .default_value = 0x1e, 196 .flags = 0, 197 }, 198 { 199 .id = SN9C102_V4L2_CID_RESET_LEVEL, 200 .type = V4L2_CTRL_TYPE_INTEGER, 201 .name = "reset level", 202 .minimum = 0x19, 203 .maximum = 0x3f, 204 .step = 0x01, 205 .default_value = 0x30, 206 .flags = 0, 207 }, 208 { 209 .id = SN9C102_V4L2_CID_PIXEL_BIAS_VOLTAGE, 210 .type = V4L2_CTRL_TYPE_INTEGER, 211 .name = "pixel bias voltage", 212 .minimum = 0x00, 213 .maximum = 0x07, 214 .step = 0x01, 215 .default_value = 0x02, 216 .flags = 0, 217 }, 218 }, 219 .get_ctrl = &hv7131d_get_ctrl, 220 .set_ctrl = &hv7131d_set_ctrl, 221 .cropcap = { 222 .bounds = { 223 .left = 0, 224 .top = 0, 225 .width = 640, 226 .height = 480, 227 }, 228 .defrect = { 229 .left = 0, 230 .top = 0, 231 .width = 640, 232 .height = 480, 233 }, 234 }, 235 .set_crop = &hv7131d_set_crop, 236 .pix_format = { 237 .width = 640, 238 .height = 480, 239 .pixelformat = V4L2_PIX_FMT_SBGGR8, 240 .priv = 8, 241 }, 242 .set_pix_format = &hv7131d_set_pix_format 243}; 244 245 246int sn9c102_probe_hv7131d(struct sn9c102_device* cam) 247{ 248 int r0 = 0, r1 = 0, err; 249 250 err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x00, 0x01}, 251 {0x28, 0x17}); 252 253 r0 = sn9c102_i2c_try_read(cam, &hv7131d, 0x00); 254 r1 = sn9c102_i2c_try_read(cam, &hv7131d, 0x01); 255 if (err || r0 < 0 || r1 < 0) 256 return -EIO; 257 258 if ((r0 != 0x00 && r0 != 0x01) || r1 != 0x04) 259 return -ENODEV; 260 261 sn9c102_attach_sensor(cam, &hv7131d); 262 263 return 0; 264} 265