30881ab7b3
Signed-off-by: Erik Andrén <erik.andren@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
582 lines
14 KiB
C
582 lines
14 KiB
C
/*
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* Driver for the ov9650 sensor
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*
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* Copyright (C) 2008 Erik Andrén
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* Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
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* Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
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*
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* Portions of code to USB interface and ALi driver software,
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* Copyright (c) 2006 Willem Duinker
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* v4l2 interface modeled after the V4L2 driver
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* for SN9C10x PC Camera Controllers
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#include "m5602_ov9650.h"
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/* Vertically and horizontally flips the image if matched, needed for machines
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where the sensor is mounted upside down */
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static
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const
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struct dmi_system_id ov9650_flip_dmi_table[] = {
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{
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.ident = "ASUS A6VC",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "A6VC")
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}
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},
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{
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.ident = "ASUS A6VM",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
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}
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},
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{
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.ident = "ASUS A6JC",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
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}
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},
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{
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.ident = "ASUS A6Kt",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt")
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}
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},
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{ }
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};
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int ov9650_read_sensor(struct sd *sd, const u8 address,
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u8 *i2c_data, const u8 len)
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{
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int err, i;
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/* The ov9650 registers have a max depth of one byte */
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if (len > 1 || !len)
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return -EINVAL;
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do {
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err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, i2c_data);
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} while ((*i2c_data & I2C_BUSY) && !err);
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m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR,
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ov9650.i2c_slave_id);
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m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address);
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m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x10 + len);
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m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08);
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for (i = 0; i < len; i++) {
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err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i]));
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PDEBUG(D_CONF, "Reading sensor register "
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"0x%x containing 0x%x ", address, *i2c_data);
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}
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return (err < 0) ? err : 0;
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}
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int ov9650_write_sensor(struct sd *sd, const u8 address,
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u8 *i2c_data, const u8 len)
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{
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int err, i;
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u8 *p;
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struct usb_device *udev = sd->gspca_dev.dev;
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__u8 *buf = sd->gspca_dev.usb_buf;
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/* The ov9650 only supports one byte writes */
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if (len > 1 || !len)
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return -EINVAL;
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memcpy(buf, sensor_urb_skeleton,
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sizeof(sensor_urb_skeleton));
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buf[11] = sd->sensor->i2c_slave_id;
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buf[15] = address;
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/* Special case larger sensor writes */
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p = buf + 16;
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/* Copy a four byte write sequence for each byte to be written to */
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for (i = 0; i < len; i++) {
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memcpy(p, sensor_urb_skeleton + 16, 4);
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p[3] = i2c_data[i];
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p += 4;
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PDEBUG(D_CONF, "Writing sensor register 0x%x with 0x%x",
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address, i2c_data[i]);
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}
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/* Copy the tailer */
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memcpy(p, sensor_urb_skeleton + 20, 4);
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/* Set the total length */
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p[3] = 0x10 + len;
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err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
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0x04, 0x40, 0x19,
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0x0000, buf,
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20 + len * 4, M5602_URB_MSG_TIMEOUT);
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return (err < 0) ? err : 0;
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}
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int ov9650_probe(struct sd *sd)
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{
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u8 prod_id = 0, ver_id = 0, i;
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if (force_sensor) {
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if (force_sensor == OV9650_SENSOR) {
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info("Forcing an %s sensor", ov9650.name);
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goto sensor_found;
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}
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/* If we want to force another sensor,
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don't try to probe this one */
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return -ENODEV;
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}
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info("Probing for an ov9650 sensor");
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/* Run the pre-init to actually probe the unit */
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for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) {
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u8 data = preinit_ov9650[i][2];
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if (preinit_ov9650[i][0] == SENSOR)
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ov9650_write_sensor(sd,
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preinit_ov9650[i][1], &data, 1);
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else
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m5602_write_bridge(sd, preinit_ov9650[i][1], data);
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}
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if (ov9650_read_sensor(sd, OV9650_PID, &prod_id, 1))
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return -ENODEV;
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if (ov9650_read_sensor(sd, OV9650_VER, &ver_id, 1))
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return -ENODEV;
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if ((prod_id == 0x96) && (ver_id == 0x52)) {
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info("Detected an ov9650 sensor");
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goto sensor_found;
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}
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return -ENODEV;
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sensor_found:
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sd->gspca_dev.cam.cam_mode = ov9650.modes;
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sd->gspca_dev.cam.nmodes = ov9650.nmodes;
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sd->desc->ctrls = ov9650.ctrls;
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sd->desc->nctrls = ov9650.nctrls;
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return 0;
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}
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int ov9650_init(struct sd *sd)
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{
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int i, err = 0;
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u8 data;
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if (dump_sensor)
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ov9650_dump_registers(sd);
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for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
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data = init_ov9650[i][2];
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if (init_ov9650[i][0] == SENSOR)
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err = ov9650_write_sensor(sd, init_ov9650[i][1],
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&data, 1);
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else
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err = m5602_write_bridge(sd, init_ov9650[i][1], data);
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}
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if (!err && dmi_check_system(ov9650_flip_dmi_table)) {
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info("vflip quirk active");
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data = 0x30;
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err = ov9650_write_sensor(sd, OV9650_MVFP, &data, 1);
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}
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return (err < 0) ? err : 0;
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}
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int ov9650_power_down(struct sd *sd)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(power_down_ov9650); i++) {
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u8 data = power_down_ov9650[i][2];
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if (power_down_ov9650[i][0] == SENSOR)
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ov9650_write_sensor(sd,
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power_down_ov9650[i][1], &data, 1);
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else
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m5602_write_bridge(sd, power_down_ov9650[i][1], data);
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}
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return 0;
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}
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int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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u8 i2c_data;
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int err;
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err = ov9650_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
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if (err < 0)
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goto out;
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*val = i2c_data & 0x03;
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err = ov9650_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
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if (err < 0)
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goto out;
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*val |= (i2c_data << 2);
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err = ov9650_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
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if (err < 0)
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goto out;
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*val |= (i2c_data & 0x3f) << 10;
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PDEBUG(D_V4L2, "Read exposure %d", *val);
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out:
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return (err < 0) ? err : 0;
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}
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int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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u8 i2c_data;
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int err;
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PDEBUG(D_V4L2, "Set exposure to %d",
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val & 0xffff);
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/* The 6 MSBs */
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i2c_data = (val >> 10) & 0x3f;
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err = ov9650_write_sensor(sd, OV9650_AECHM,
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&i2c_data, 1);
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if (err < 0)
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goto out;
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/* The 8 middle bits */
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i2c_data = (val >> 2) & 0xff;
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err = ov9650_write_sensor(sd, OV9650_AECH,
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&i2c_data, 1);
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if (err < 0)
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goto out;
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/* The 2 LSBs */
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i2c_data = val & 0x03;
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err = ov9650_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
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out:
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return (err < 0) ? err : 0;
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}
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int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
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*val = (i2c_data & 0x03) << 8;
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err = ov9650_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
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*val |= i2c_data;
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PDEBUG(D_V4L2, "Read gain %d", *val);
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return (err < 0) ? err : 0;
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}
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int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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/* The 2 MSB */
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/* Read the OV9650_VREF register first to avoid
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corrupting the VREF high and low bits */
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ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
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/* Mask away all uninteresting bits */
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i2c_data = ((val & 0x0300) >> 2) |
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(i2c_data & 0x3F);
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err = ov9650_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
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/* The 8 LSBs */
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i2c_data = val & 0xff;
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err = ov9650_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
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return (err < 0) ? err : 0;
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}
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int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = ov9650_read_sensor(sd, OV9650_RED, &i2c_data, 1);
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*val = i2c_data;
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PDEBUG(D_V4L2, "Read red gain %d", *val);
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return (err < 0) ? err : 0;
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}
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int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_V4L2, "Set red gain to %d",
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val & 0xff);
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i2c_data = val & 0xff;
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err = ov9650_write_sensor(sd, OV9650_RED, &i2c_data, 1);
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return (err < 0) ? err : 0;
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}
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int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = ov9650_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
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*val = i2c_data;
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PDEBUG(D_V4L2, "Read blue gain %d", *val);
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return (err < 0) ? err : 0;
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}
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int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_V4L2, "Set blue gain to %d",
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val & 0xff);
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i2c_data = val & 0xff;
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err = ov9650_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
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return (err < 0) ? err : 0;
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}
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int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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if (dmi_check_system(ov9650_flip_dmi_table))
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*val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
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else
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*val = (i2c_data & OV9650_HFLIP) >> 5;
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PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
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return (err < 0) ? err : 0;
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}
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int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
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err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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if (err < 0)
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goto out;
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if (dmi_check_system(ov9650_flip_dmi_table))
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i2c_data = ((i2c_data & 0xdf) |
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(((val ? 0 : 1) & 0x01) << 5));
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else
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i2c_data = ((i2c_data & 0xdf) |
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((val & 0x01) << 5));
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err = ov9650_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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out:
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return (err < 0) ? err : 0;
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}
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int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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if (dmi_check_system(ov9650_flip_dmi_table))
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*val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
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else
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*val = (i2c_data & 0x10) >> 4;
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PDEBUG(D_V4L2, "Read vertical flip %d", *val);
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return (err < 0) ? err : 0;
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}
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int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_V4L2, "Set vertical flip to %d", val);
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err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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if (err < 0)
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goto out;
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if (dmi_check_system(ov9650_flip_dmi_table))
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i2c_data = ((i2c_data & 0xef) |
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(((val ? 0 : 1) & 0x01) << 4));
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else
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i2c_data = ((i2c_data & 0xef) |
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((val & 0x01) << 4));
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err = ov9650_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
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out:
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return (err < 0) ? err : 0;
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}
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int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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err = ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
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if (err < 0)
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goto out;
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*val = (i2c_data & 0x03) << 8;
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err = ov9650_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
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*val |= i2c_data;
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PDEBUG(D_V4L2, "Read gain %d", *val);
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out:
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return (err < 0) ? err : 0;
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}
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int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
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{
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int err;
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u8 i2c_data;
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struct sd *sd = (struct sd *) gspca_dev;
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PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
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/* Read the OV9650_VREF register first to avoid
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corrupting the VREF high and low bits */
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err = ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
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if (err < 0)
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goto out;
|
|
|
|
/* Mask away all uninteresting bits */
|
|
i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
|
|
err = ov9650_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
/* The 8 LSBs */
|
|
i2c_data = val & 0xff;
|
|
err = ov9650_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
|
|
|
|
out:
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
|
|
{
|
|
int err;
|
|
u8 i2c_data;
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
err = ov9650_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
*val = (i2c_data & OV9650_AWB_EN) >> 1;
|
|
PDEBUG(D_V4L2, "Read auto white balance %d", *val);
|
|
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
|
|
{
|
|
int err;
|
|
u8 i2c_data;
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
PDEBUG(D_V4L2, "Set auto white balance to %d", val);
|
|
err = ov9650_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
|
|
err = ov9650_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
out:
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
|
|
{
|
|
int err;
|
|
u8 i2c_data;
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
err = ov9650_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
*val = (i2c_data & OV9650_AGC_EN) >> 2;
|
|
PDEBUG(D_V4L2, "Read auto gain control %d", *val);
|
|
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
|
|
{
|
|
int err;
|
|
u8 i2c_data;
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
|
|
|
PDEBUG(D_V4L2, "Set auto gain control to %d", val);
|
|
err = ov9650_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
|
|
err = ov9650_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
|
|
out:
|
|
return (err < 0) ? err : 0;
|
|
}
|
|
|
|
void ov9650_dump_registers(struct sd *sd)
|
|
{
|
|
int address;
|
|
info("Dumping the ov9650 register state");
|
|
for (address = 0; address < 0xa9; address++) {
|
|
u8 value;
|
|
ov9650_read_sensor(sd, address, &value, 1);
|
|
info("register 0x%x contains 0x%x",
|
|
address, value);
|
|
}
|
|
|
|
info("ov9650 register state dump complete");
|
|
|
|
info("Probing for which registers that are read/write");
|
|
for (address = 0; address < 0xff; address++) {
|
|
u8 old_value, ctrl_value;
|
|
u8 test_value[2] = {0xff, 0xff};
|
|
|
|
ov9650_read_sensor(sd, address, &old_value, 1);
|
|
ov9650_write_sensor(sd, address, test_value, 1);
|
|
ov9650_read_sensor(sd, address, &ctrl_value, 1);
|
|
|
|
if (ctrl_value == test_value[0])
|
|
info("register 0x%x is writeable", address);
|
|
else
|
|
info("register 0x%x is read only", address);
|
|
|
|
/* Restore original value */
|
|
ov9650_write_sensor(sd, address, &old_value, 1);
|
|
}
|
|
}
|