/*************************************************************************** * Plug-in for PAS202BCB image sensor connected to the SN9C1xx PC Camera * * Controllers * * * * Copyright (C) 2004 by Carlos Eduardo Medaglia Dyonisio * * <medaglia@undl.org.br> * * http://cadu.homelinux.com:8080/ * * * * Support for SN9C103, DAC Magnitude, exposure and green gain controls * * added by Luca Risolia <luca.risolia@studio.unibo.it> * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * ***************************************************************************/ #include <linux/delay.h> #include "sn9c102_sensor.h" static int pas202bcb_init(struct sn9c102_device* cam) { int err = 0; switch (sn9c102_get_bridge(cam)) { case BRIDGE_SN9C101: case BRIDGE_SN9C102: err = sn9c102_write_const_regs(cam, {0x00, 0x10}, {0x00, 0x11}, {0x00, 0x14}, {0x20, 0x17}, {0x30, 0x19}, {0x09, 0x18}); break; case BRIDGE_SN9C103: err = sn9c102_write_const_regs(cam, {0x00, 0x02}, {0x00, 0x03}, {0x1a, 0x04}, {0x20, 0x05}, {0x20, 0x06}, {0x20, 0x07}, {0x00, 0x10}, {0x00, 0x11}, {0x00, 0x14}, {0x20, 0x17}, {0x30, 0x19}, {0x09, 0x18}, {0x02, 0x1c}, {0x03, 0x1d}, {0x0f, 0x1e}, {0x0c, 0x1f}, {0x00, 0x20}, {0x10, 0x21}, {0x20, 0x22}, {0x30, 0x23}, {0x40, 0x24}, {0x50, 0x25}, {0x60, 0x26}, {0x70, 0x27}, {0x80, 0x28}, {0x90, 0x29}, {0xa0, 0x2a}, {0xb0, 0x2b}, {0xc0, 0x2c}, {0xd0, 0x2d}, {0xe0, 0x2e}, {0xf0, 0x2f}, {0xff, 0x30}); break; default: break; } err += sn9c102_i2c_write(cam, 0x02, 0x14); err += sn9c102_i2c_write(cam, 0x03, 0x40); err += sn9c102_i2c_write(cam, 0x0d, 0x2c); err += sn9c102_i2c_write(cam, 0x0e, 0x01); err += sn9c102_i2c_write(cam, 0x0f, 0xa9); err += sn9c102_i2c_write(cam, 0x10, 0x08); err += sn9c102_i2c_write(cam, 0x13, 0x63); err += sn9c102_i2c_write(cam, 0x15, 0x70); err += sn9c102_i2c_write(cam, 0x11, 0x01); msleep(400); return err; } static int pas202bcb_get_ctrl(struct sn9c102_device* cam, struct v4l2_control* ctrl) { switch (ctrl->id) { case V4L2_CID_EXPOSURE: { int r1 = sn9c102_i2c_read(cam, 0x04), r2 = sn9c102_i2c_read(cam, 0x05); if (r1 < 0 || r2 < 0) return -EIO; ctrl->value = (r1 << 6) | (r2 & 0x3f); } return 0; case V4L2_CID_RED_BALANCE: if ((ctrl->value = sn9c102_i2c_read(cam, 0x09)) < 0) return -EIO; ctrl->value &= 0x0f; return 0; case V4L2_CID_BLUE_BALANCE: if ((ctrl->value = sn9c102_i2c_read(cam, 0x07)) < 0) return -EIO; ctrl->value &= 0x0f; return 0; case V4L2_CID_GAIN: if ((ctrl->value = sn9c102_i2c_read(cam, 0x10)) < 0) return -EIO; ctrl->value &= 0x1f; return 0; case SN9C102_V4L2_CID_GREEN_BALANCE: if ((ctrl->value = sn9c102_i2c_read(cam, 0x08)) < 0) return -EIO; ctrl->value &= 0x0f; return 0; case SN9C102_V4L2_CID_DAC_MAGNITUDE: if ((ctrl->value = sn9c102_i2c_read(cam, 0x0c)) < 0) return -EIO; return 0; default: return -EINVAL; } } static int pas202bcb_set_pix_format(struct sn9c102_device* cam, const struct v4l2_pix_format* pix) { int err = 0; if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X) err += sn9c102_write_reg(cam, 0x28, 0x17); else err += sn9c102_write_reg(cam, 0x20, 0x17); return err; } static int pas202bcb_set_ctrl(struct sn9c102_device* cam, const struct v4l2_control* ctrl) { int err = 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: err += sn9c102_i2c_write(cam, 0x04, ctrl->value >> 6); err += sn9c102_i2c_write(cam, 0x05, ctrl->value & 0x3f); break; case V4L2_CID_RED_BALANCE: err += sn9c102_i2c_write(cam, 0x09, ctrl->value); break; case V4L2_CID_BLUE_BALANCE: err += sn9c102_i2c_write(cam, 0x07, ctrl->value); break; case V4L2_CID_GAIN: err += sn9c102_i2c_write(cam, 0x10, ctrl->value); break; case SN9C102_V4L2_CID_GREEN_BALANCE: err += sn9c102_i2c_write(cam, 0x08, ctrl->value); break; case SN9C102_V4L2_CID_DAC_MAGNITUDE: err += sn9c102_i2c_write(cam, 0x0c, ctrl->value); break; default: return -EINVAL; } err += sn9c102_i2c_write(cam, 0x11, 0x01); return err ? -EIO : 0; } static int pas202bcb_set_crop(struct sn9c102_device* cam, const struct v4l2_rect* rect) { struct sn9c102_sensor* s = sn9c102_get_sensor(cam); int err = 0; u8 h_start = 0, v_start = (u8)(rect->top - s->cropcap.bounds.top) + 3; switch (sn9c102_get_bridge(cam)) { case BRIDGE_SN9C101: case BRIDGE_SN9C102: h_start = (u8)(rect->left - s->cropcap.bounds.left) + 4; break; case BRIDGE_SN9C103: h_start = (u8)(rect->left - s->cropcap.bounds.left) + 3; break; default: break; } err += sn9c102_write_reg(cam, h_start, 0x12); err += sn9c102_write_reg(cam, v_start, 0x13); return err; } static const struct sn9c102_sensor pas202bcb = { .name = "PAS202BCB", .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>", .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102 | BRIDGE_SN9C103, .sysfs_ops = SN9C102_I2C_READ | SN9C102_I2C_WRITE, .frequency = SN9C102_I2C_400KHZ | SN9C102_I2C_100KHZ, .interface = SN9C102_I2C_2WIRES, .i2c_slave_id = 0x40, .init = &pas202bcb_init, .qctrl = { { .id = V4L2_CID_EXPOSURE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "exposure", .minimum = 0x01e5, .maximum = 0x3fff, .step = 0x0001, .default_value = 0x01e5, .flags = 0, }, { .id = V4L2_CID_GAIN, .type = V4L2_CTRL_TYPE_INTEGER, .name = "global gain", .minimum = 0x00, .maximum = 0x1f, .step = 0x01, .default_value = 0x0b, .flags = 0, }, { .id = V4L2_CID_RED_BALANCE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "red balance", .minimum = 0x00, .maximum = 0x0f, .step = 0x01, .default_value = 0x00, .flags = 0, }, { .id = V4L2_CID_BLUE_BALANCE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "blue balance", .minimum = 0x00, .maximum = 0x0f, .step = 0x01, .default_value = 0x05, .flags = 0, }, { .id = SN9C102_V4L2_CID_GREEN_BALANCE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "green balance", .minimum = 0x00, .maximum = 0x0f, .step = 0x01, .default_value = 0x00, .flags = 0, }, { .id = SN9C102_V4L2_CID_DAC_MAGNITUDE, .type = V4L2_CTRL_TYPE_INTEGER, .name = "DAC magnitude", .minimum = 0x00, .maximum = 0xff, .step = 0x01, .default_value = 0x04, .flags = 0, }, }, .get_ctrl = &pas202bcb_get_ctrl, .set_ctrl = &pas202bcb_set_ctrl, .cropcap = { .bounds = { .left = 0, .top = 0, .width = 640, .height = 480, }, .defrect = { .left = 0, .top = 0, .width = 640, .height = 480, }, }, .set_crop = &pas202bcb_set_crop, .pix_format = { .width = 640, .height = 480, .pixelformat = V4L2_PIX_FMT_SBGGR8, .priv = 8, }, .set_pix_format = &pas202bcb_set_pix_format }; int sn9c102_probe_pas202bcb(struct sn9c102_device* cam) { int r0 = 0, r1 = 0, err = 0; unsigned int pid = 0; /* * Minimal initialization to enable the I2C communication * NOTE: do NOT change the values! */ switch (sn9c102_get_bridge(cam)) { case BRIDGE_SN9C101: case BRIDGE_SN9C102: err = sn9c102_write_const_regs(cam, {0x01, 0x01}, /* power down */ {0x40, 0x01}, /* power on */ {0x28, 0x17});/* clock 24 MHz */ break; case BRIDGE_SN9C103: /* do _not_ change anything! */ err = sn9c102_write_const_regs(cam, {0x09, 0x01}, {0x44, 0x01}, {0x44, 0x02}, {0x29, 0x17}); break; default: break; } r0 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x00); r1 = sn9c102_i2c_try_read(cam, &pas202bcb, 0x01); if (err || r0 < 0 || r1 < 0) return -EIO; pid = (r0 << 4) | ((r1 & 0xf0) >> 4); if (pid != 0x017) return -ENODEV; sn9c102_attach_sensor(cam, &pas202bcb); return 0; }