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path: root/drivers/media/video/gspca/m5602/m5602_mt9m111.c
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Diffstat (limited to 'drivers/media/video/gspca/m5602/m5602_mt9m111.c')
-rw-r--r--drivers/media/video/gspca/m5602/m5602_mt9m111.c345
1 files changed, 345 insertions, 0 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_mt9m111.c b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
new file mode 100644
index 00000000000..fb700c2d055
--- /dev/null
+++ b/drivers/media/video/gspca/m5602/m5602_mt9m111.c
@@ -0,0 +1,345 @@
+/*
+ * Driver for the mt9m111 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_mt9m111.h"
+
+int mt9m111_probe(struct sd *sd)
+{
+ u8 data[2] = {0x00, 0x00};
+ int i;
+
+ if (force_sensor) {
+ if (force_sensor == MT9M111_SENSOR) {
+ info("Forcing a %s sensor", mt9m111.name);
+ goto sensor_found;
+ }
+ /* If we want to force another sensor, don't try to probe this
+ * one */
+ return -ENODEV;
+ }
+
+ info("Probing for a mt9m111 sensor");
+
+ /* Do the preinit */
+ for (i = 0; i < ARRAY_SIZE(preinit_mt9m111); i++) {
+ if (preinit_mt9m111[i][0] == BRIDGE) {
+ m5602_write_bridge(sd,
+ preinit_mt9m111[i][1],
+ preinit_mt9m111[i][2]);
+ } else {
+ data[0] = preinit_mt9m111[i][2];
+ data[1] = preinit_mt9m111[i][3];
+ mt9m111_write_sensor(sd,
+ preinit_mt9m111[i][1], data, 2);
+ }
+ }
+
+ if (mt9m111_read_sensor(sd, MT9M111_SC_CHIPVER, data, 2))
+ return -ENODEV;
+
+ if ((data[0] == 0x14) && (data[1] == 0x3a)) {
+ info("Detected a mt9m111 sensor");
+ goto sensor_found;
+ }
+
+ return -ENODEV;
+
+sensor_found:
+ sd->gspca_dev.cam.cam_mode = mt9m111.modes;
+ sd->gspca_dev.cam.nmodes = mt9m111.nmodes;
+ sd->desc->ctrls = mt9m111.ctrls;
+ sd->desc->nctrls = mt9m111.nctrls;
+ return 0;
+}
+
+int mt9m111_init(struct sd *sd)
+{
+ int i, err = 0;
+
+ /* Init the sensor */
+ for (i = 0; i < ARRAY_SIZE(init_mt9m111); i++) {
+ u8 data[2];
+
+ if (init_mt9m111[i][0] == BRIDGE) {
+ err = m5602_write_bridge(sd,
+ init_mt9m111[i][1],
+ init_mt9m111[i][2]);
+ } else {
+ data[0] = init_mt9m111[i][2];
+ data[1] = init_mt9m111[i][3];
+ err = mt9m111_write_sensor(sd,
+ init_mt9m111[i][1], data, 2);
+ }
+ }
+
+ if (dump_sensor)
+ mt9m111_dump_registers(sd);
+
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_power_down(struct sd *sd)
+{
+ return 0;
+}
+
+int mt9m111_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ int err;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ err = mt9m111_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
+ data, 2);
+ *val = data[0] & MT9M111_RMB_MIRROR_ROWS;
+ PDEBUG(D_V4L2, "Read vertical flip %d", *val);
+
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ PDEBUG(D_V4L2, "Set vertical flip to %d", val);
+
+ /* Set the correct page map */
+ err = mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
+ if (err < 0)
+ goto out;
+
+ err = mt9m111_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
+ if (err < 0)
+ goto out;
+
+ data[0] = (data[0] & 0xfe) | val;
+ err = mt9m111_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
+ data, 2);
+out:
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ int err;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ err = mt9m111_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
+ data, 2);
+ *val = data[0] & MT9M111_RMB_MIRROR_COLS;
+ PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
+
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
+
+ /* Set the correct page map */
+ err = mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
+ if (err < 0)
+ goto out;
+
+ err = mt9m111_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2);
+ if (err < 0)
+ goto out;
+
+ data[0] = (data[0] & 0xfd) | ((val << 1) & 0x02);
+ err = mt9m111_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B,
+ data, 2);
+out:
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ int err, tmp;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ err = mt9m111_read_sensor(sd, MT9M111_SC_GLOBAL_GAIN, data, 2);
+ tmp = ((data[1] << 8) | data[0]);
+
+ *val = ((tmp & (1 << 10)) * 2) |
+ ((tmp & (1 << 9)) * 2) |
+ ((tmp & (1 << 8)) * 2) |
+ (tmp & 0x7f);
+
+ PDEBUG(D_V4L2, "Read gain %d", *val);
+
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_set_gain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err, tmp;
+ u8 data[2] = {0x00, 0x00};
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ /* Set the correct page map */
+ err = mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, data, 2);
+ if (err < 0)
+ goto out;
+
+ if (val >= INITIAL_MAX_GAIN * 2 * 2 * 2)
+ return -EINVAL;
+
+ if ((val >= INITIAL_MAX_GAIN * 2 * 2) &&
+ (val < (INITIAL_MAX_GAIN - 1) * 2 * 2 * 2))
+ tmp = (1 << 10) | (val << 9) |
+ (val << 8) | (val / 8);
+ else if ((val >= INITIAL_MAX_GAIN * 2) &&
+ (val < INITIAL_MAX_GAIN * 2 * 2))
+ tmp = (1 << 9) | (1 << 8) | (val / 4);
+ else if ((val >= INITIAL_MAX_GAIN) &&
+ (val < INITIAL_MAX_GAIN * 2))
+ tmp = (1 << 8) | (val / 2);
+ else
+ tmp = val;
+
+ data[1] = (tmp & 0xff00) >> 8;
+ data[0] = (tmp & 0xff);
+ PDEBUG(D_V4L2, "tmp=%d, data[1]=%d, data[0]=%d", tmp,
+ data[1], data[0]);
+
+ err = mt9m111_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN,
+ data, 2);
+out:
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_read_sensor(struct sd *sd, const u8 address,
+ u8 *i2c_data, const u8 len) {
+ int err, i;
+
+ do {
+ err = m5602_read_bridge(sd, M5602_XB_I2C_STATUS, i2c_data);
+ } while ((*i2c_data & I2C_BUSY) && !err);
+ if (err < 0)
+ goto out;
+
+ err = m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR,
+ sd->sensor->i2c_slave_id);
+ if (err < 0)
+ goto out;
+
+ err = m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address);
+ if (err < 0)
+ goto out;
+
+ err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x1a);
+ if (err < 0)
+ goto out;
+
+ for (i = 0; i < len && !err; i++) {
+ err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i]));
+
+ PDEBUG(D_CONF, "Reading sensor register "
+ "0x%x contains 0x%x ", address, *i2c_data);
+ }
+out:
+ return (err < 0) ? err : 0;
+}
+
+int mt9m111_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;
+
+ /* No sensor with a data width larger
+ than 16 bits has yet been seen, nor with 0 :p*/
+ if (len > 2 || !len)
+ return -EINVAL;
+
+ memcpy(buf, sensor_urb_skeleton,
+ sizeof(sensor_urb_skeleton));
+
+ buf[11] = sd->sensor->i2c_slave_id;
+ buf[15] = address;
+
+ 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;
+}
+
+void mt9m111_dump_registers(struct sd *sd)
+{
+ u8 address, value[2] = {0x00, 0x00};
+
+ info("Dumping the mt9m111 register state");
+
+ info("Dumping the mt9m111 sensor core registers");
+ value[1] = MT9M111_SENSOR_CORE;
+ mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
+ for (address = 0; address < 0xff; address++) {
+ mt9m111_read_sensor(sd, address, value, 2);
+ info("register 0x%x contains 0x%x%x",
+ address, value[0], value[1]);
+ }
+
+ info("Dumping the mt9m111 color pipeline registers");
+ value[1] = MT9M111_COLORPIPE;
+ mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
+ for (address = 0; address < 0xff; address++) {
+ mt9m111_read_sensor(sd, address, value, 2);
+ info("register 0x%x contains 0x%x%x",
+ address, value[0], value[1]);
+ }
+
+ info("Dumping the mt9m111 camera control registers");
+ value[1] = MT9M111_CAMERA_CONTROL;
+ mt9m111_write_sensor(sd, MT9M111_PAGE_MAP, value, 2);
+ for (address = 0; address < 0xff; address++) {
+ mt9m111_read_sensor(sd, address, value, 2);
+ info("register 0x%x contains 0x%x%x",
+ address, value[0], value[1]);
+ }
+
+ info("mt9m111 register state dump complete");
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-08 05:41:48 +0000