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path: root/drivers/media/video/gspca/m5602/m5602_ov9650.c
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Diffstat (limited to 'drivers/media/video/gspca/m5602/m5602_ov9650.c')
-rw-r--r--drivers/media/video/gspca/m5602/m5602_ov9650.c546
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..31c5896250e
--- /dev/null
+++ b/drivers/media/video/gspca/m5602/m5602_ov9650.c
@@ -0,0 +1,546 @@
+/*
+ * Driver for the ov9650 sensor
+ *
+ * Copyright (C) 2008 Erik Andren
+ * 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(DBG_TRACE, "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(DBG_TRACE, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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(DBG_V4L2_CID, "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);
+ }
+}