diff options
Diffstat (limited to 'drivers/media/video/gspca/m5602/m5602_ov9650.c')
| -rw-r--r-- | drivers/media/video/gspca/m5602/m5602_ov9650.c | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_ov9650.c b/drivers/media/video/gspca/m5602/m5602_ov9650.c new file mode 100644 index 00000000000..837c7e47661 --- /dev/null +++ b/drivers/media/video/gspca/m5602/m5602_ov9650.c @@ -0,0 +1,546 @@ +/* + * Driver for the ov9650 sensor + * + * Copyright (C) 2008 Erik Andrén + * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project. + * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br> + * + * Portions of code to USB interface and ALi driver software, + * Copyright (c) 2006 Willem Duinker + * v4l2 interface modeled after the V4L2 driver + * for SN9C10x PC Camera Controllers + * + * 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, version 2. + * + */ + +#include "m5602_ov9650.h" + +int ov9650_read_sensor(struct sd *sd, const u8 address, + u8 *i2c_data, const u8 len) +{ + int err, i; + + /* The ov9650 registers have a max depth of one byte */ + if (len > 1 || !len) + return -EINVAL; + + do { + err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, i2c_data); + } while ((*i2c_data & I2C_BUSY) && !err); + + m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR, + ov9650.i2c_slave_id); + m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address); + m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x10 + len); + m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x08); + + for (i = 0; i < len; i++) { + err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i])); + + PDEBUG(D_CONF, "Reading sensor register " + "0x%x containing 0x%x ", address, *i2c_data); + } + return (err < 0) ? err : 0; +} + +int ov9650_write_sensor(struct sd *sd, const u8 address, + u8 *i2c_data, const u8 len) +{ + int err, i; + u8 *p; + struct usb_device *udev = sd->gspca_dev.dev; + __u8 *buf = sd->gspca_dev.usb_buf; + + /* The ov9650 only supports one byte writes */ + if (len > 1 || !len) + return -EINVAL; + + memcpy(buf, sensor_urb_skeleton, + sizeof(sensor_urb_skeleton)); + + buf[11] = sd->sensor->i2c_slave_id; + buf[15] = address; + + /* Special case larger sensor writes */ + p = buf + 16; + + /* Copy a four byte write sequence for each byte to be written to */ + for (i = 0; i < len; i++) { + memcpy(p, sensor_urb_skeleton + 16, 4); + p[3] = i2c_data[i]; + p += 4; + PDEBUG(D_CONF, "Writing sensor register 0x%x with 0x%x", + address, i2c_data[i]); + } + + /* Copy the tailer */ + memcpy(p, sensor_urb_skeleton + 20, 4); + + /* Set the total length */ + p[3] = 0x10 + len; + + err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + 0x04, 0x40, 0x19, + 0x0000, buf, + 20 + len * 4, M5602_URB_MSG_TIMEOUT); + + return (err < 0) ? err : 0; +} + +int ov9650_probe(struct sd *sd) +{ + u8 prod_id = 0, ver_id = 0, i; + + if (force_sensor) { + if (force_sensor == OV9650_SENSOR) { + info("Forcing an %s sensor", ov9650.name); + goto sensor_found; + } + /* If we want to force another sensor, + don't try to probe this one */ + return -ENODEV; + } + + info("Probing for an ov9650 sensor"); + + /* Run the pre-init to actually probe the unit */ + for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) { + u8 data = preinit_ov9650[i][2]; + if (preinit_ov9650[i][0] == SENSOR) + ov9650_write_sensor(sd, + preinit_ov9650[i][1], &data, 1); + else + m5602_write_bridge(sd, preinit_ov9650[i][1], data); + } + + if (ov9650_read_sensor(sd, OV9650_PID, &prod_id, 1)) + return -ENODEV; + + if (ov9650_read_sensor(sd, OV9650_VER, &ver_id, 1)) + return -ENODEV; + + if ((prod_id == 0x96) && (ver_id == 0x52)) { + info("Detected an ov9650 sensor"); + goto sensor_found; + } + + return -ENODEV; + +sensor_found: + sd->gspca_dev.cam.cam_mode = ov9650.modes; + sd->gspca_dev.cam.nmodes = ov9650.nmodes; + sd->desc->ctrls = ov9650.ctrls; + sd->desc->nctrls = ov9650.nctrls; + return 0; +} + +int ov9650_init(struct sd *sd) +{ + int i, err = 0; + u8 data; + + if (dump_sensor) + ov9650_dump_registers(sd); + + for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) { + data = init_ov9650[i][2]; + if (init_ov9650[i][0] == SENSOR) + err = ov9650_write_sensor(sd, init_ov9650[i][1], + &data, 1); + else + err = m5602_write_bridge(sd, init_ov9650[i][1], data); + } + + if (!err && dmi_check_system(ov9650_flip_dmi_table)) { + info("vflip quirk active"); + data = 0x30; + err = ov9650_write_sensor(sd, OV9650_MVFP, &data, 1); + } + + return (err < 0) ? err : 0; +} + +int ov9650_power_down(struct sd *sd) +{ + int i; + for (i = 0; i < ARRAY_SIZE(power_down_ov9650); i++) { + u8 data = power_down_ov9650[i][2]; + if (power_down_ov9650[i][0] == SENSOR) + ov9650_write_sensor(sd, + power_down_ov9650[i][1], &data, 1); + else + m5602_write_bridge(sd, power_down_ov9650[i][1], data); + } + + return 0; +} + +int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + u8 i2c_data; + int err; + + err = ov9650_read_sensor(sd, OV9650_COM1, &i2c_data, 1); + if (err < 0) + goto out; + *val = i2c_data & 0x03; + + err = ov9650_read_sensor(sd, OV9650_AECH, &i2c_data, 1); + if (err < 0) + goto out; + *val |= (i2c_data << 2); + + err = ov9650_read_sensor(sd, OV9650_AECHM, &i2c_data, 1); + if (err < 0) + goto out; + *val |= (i2c_data & 0x3f) << 10; + + PDEBUG(D_V4L2, "Read exposure %d", *val); +out: + return (err < 0) ? err : 0; +} + +int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + u8 i2c_data; + int err; + + PDEBUG(D_V4L2, "Set exposure to %d", + val & 0xffff); + + /* The 6 MSBs */ + i2c_data = (val >> 10) & 0x3f; + err = ov9650_write_sensor(sd, OV9650_AECHM, + &i2c_data, 1); + if (err < 0) + goto out; + + /* The 8 middle bits */ + i2c_data = (val >> 2) & 0xff; + err = ov9650_write_sensor(sd, OV9650_AECH, + &i2c_data, 1); + if (err < 0) + goto out; + + /* The 2 LSBs */ + i2c_data = val & 0x03; + err = ov9650_write_sensor(sd, OV9650_COM1, &i2c_data, 1); + +out: + return (err < 0) ? err : 0; +} + +int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1); + *val = (i2c_data & 0x03) << 8; + + err = ov9650_read_sensor(sd, OV9650_GAIN, &i2c_data, 1); + *val |= i2c_data; + PDEBUG(D_V4L2, "Read gain %d", *val); + return (err < 0) ? err : 0; +} + +int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + /* The 2 MSB */ + /* Read the OV9650_VREF register first to avoid + corrupting the VREF high and low bits */ + ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1); + /* Mask away all uninteresting bits */ + i2c_data = ((val & 0x0300) >> 2) | + (i2c_data & 0x3F); + err = ov9650_write_sensor(sd, OV9650_VREF, &i2c_data, 1); + + /* The 8 LSBs */ + i2c_data = val & 0xff; + err = ov9650_write_sensor(sd, OV9650_GAIN, &i2c_data, 1); + return (err < 0) ? err : 0; +} + +int ov9650_get_red_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_RED, &i2c_data, 1); + *val = i2c_data; + + PDEBUG(D_V4L2, "Read red gain %d", *val); + + return (err < 0) ? err : 0; +} + +int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_V4L2, "Set red gain to %d", + val & 0xff); + + i2c_data = val & 0xff; + err = ov9650_write_sensor(sd, OV9650_RED, &i2c_data, 1); + + return (err < 0) ? err : 0; +} + +int ov9650_get_blue_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_BLUE, &i2c_data, 1); + *val = i2c_data; + + PDEBUG(D_V4L2, "Read blue gain %d", *val); + + return (err < 0) ? err : 0; +} + +int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_V4L2, "Set blue gain to %d", + val & 0xff); + + i2c_data = val & 0xff; + err = ov9650_write_sensor(sd, OV9650_BLUE, &i2c_data, 1); + + return (err < 0) ? err : 0; +} + +int ov9650_get_hflip(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_MVFP, &i2c_data, 1); + if (dmi_check_system(ov9650_flip_dmi_table)) + *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1; + else + *val = (i2c_data & OV9650_HFLIP) >> 5; + PDEBUG(D_V4L2, "Read horizontal flip %d", *val); + + return (err < 0) ? err : 0; +} + +int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_V4L2, "Set horizontal flip to %d", val); + err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1); + if (err < 0) + goto out; + + if (dmi_check_system(ov9650_flip_dmi_table)) + i2c_data = ((i2c_data & 0xdf) | + (((val ? 0 : 1) & 0x01) << 5)); + else + i2c_data = ((i2c_data & 0xdf) | + ((val & 0x01) << 5)); + + err = ov9650_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); +out: + return (err < 0) ? err : 0; +} + +int ov9650_get_vflip(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_MVFP, &i2c_data, 1); + if (dmi_check_system(ov9650_flip_dmi_table)) + *val = ((i2c_data & 0x10) >> 4) ? 0 : 1; + else + *val = (i2c_data & 0x10) >> 4; + PDEBUG(D_V4L2, "Read vertical flip %d", *val); + + return (err < 0) ? err : 0; +} + +int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_V4L2, "Set vertical flip to %d", val); + err = ov9650_read_sensor(sd, OV9650_MVFP, &i2c_data, 1); + if (err < 0) + goto out; + + if (dmi_check_system(ov9650_flip_dmi_table)) + i2c_data = ((i2c_data & 0xef) | + (((val ? 0 : 1) & 0x01) << 4)); + else + i2c_data = ((i2c_data & 0xef) | + ((val & 0x01) << 4)); + + err = ov9650_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); +out: + return (err < 0) ? err : 0; +} + +int ov9650_get_brightness(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_VREF, &i2c_data, 1); + if (err < 0) + goto out; + *val = (i2c_data & 0x03) << 8; + + err = ov9650_read_sensor(sd, OV9650_GAIN, &i2c_data, 1); + *val |= i2c_data; + PDEBUG(D_V4L2, "Read gain %d", *val); +out: + return (err < 0) ? err : 0; +} + +int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val) +{ + int err; + u8 i2c_data; + struct sd *sd = (struct sd *) gspca_dev; + + PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff); + + /* Read the OV9650_VREF register first to avoid + corrupting the VREF high and low bits */ + err = ov9650_read_sensor(sd, OV9650_VREF, &i2c_data, 1); + if (err < 0) + 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); + } +} |