| /*************************************************************************** |
| * 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 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; |
| } |
