461 lines
11 KiB
C
461 lines
11 KiB
C
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/*
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* Driver for the s5k4aa sensor
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*
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* Copyright (C) 2008 Erik Andren
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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_s5k4aa.h"
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int s5k4aa_probe(struct sd *sd)
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{
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u8 prod_id[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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const u8 expected_prod_id[6] = {0x00, 0x10, 0x00, 0x4b, 0x33, 0x75};
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int i, err = 0;
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if (force_sensor) {
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if (force_sensor == S5K4AA_SENSOR) {
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info("Forcing a %s sensor", s5k4aa.name);
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goto sensor_found;
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}
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/* If we want to force another sensor, don't try to probe this
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* one */
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return -ENODEV;
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}
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info("Probing for a s5k4aa sensor");
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/* Preinit the sensor */
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for (i = 0; i < ARRAY_SIZE(preinit_s5k4aa) && !err; i++) {
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u8 data[2] = {0x00, 0x00};
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switch (preinit_s5k4aa[i][0]) {
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case BRIDGE:
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err = m5602_write_bridge(sd,
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preinit_s5k4aa[i][1],
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preinit_s5k4aa[i][2]);
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break;
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case SENSOR:
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data[0] = preinit_s5k4aa[i][2];
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err = s5k4aa_write_sensor(sd,
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preinit_s5k4aa[i][1],
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data, 1);
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break;
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case SENSOR_LONG:
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data[0] = preinit_s5k4aa[i][2];
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data[1] = preinit_s5k4aa[i][3];
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err = s5k4aa_write_sensor(sd,
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preinit_s5k4aa[i][1],
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data, 2);
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break;
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default:
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info("Invalid stream command, exiting init");
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return -EINVAL;
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}
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}
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/* Test some registers, but we don't know their exact meaning yet */
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if (s5k4aa_read_sensor(sd, 0x00, prod_id, sizeof(prod_id)))
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return -ENODEV;
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if (memcmp(prod_id, expected_prod_id, sizeof(prod_id)))
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return -ENODEV;
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else
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info("Detected a s5k4aa sensor");
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sensor_found:
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sd->gspca_dev.cam.cam_mode = s5k4aa.modes;
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sd->gspca_dev.cam.nmodes = s5k4aa.nmodes;
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return 0;
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}
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int s5k4aa_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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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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if (err < 0)
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goto out;
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err = m5602_write_bridge(sd, M5602_XB_I2C_DEV_ADDR,
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sd->sensor->i2c_slave_id);
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if (err < 0)
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goto out;
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err = m5602_write_bridge(sd, M5602_XB_I2C_REG_ADDR, address);
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if (err < 0)
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goto out;
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err = m5602_write_bridge(sd, M5602_XB_I2C_CTRL, 0x18 + len);
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if (err < 0)
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goto out;
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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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if (err < 0)
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goto out;
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for (i = 0; (i < len) & !err; i++) {
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err = m5602_read_bridge(sd, M5602_XB_I2C_DATA, &(i2c_data[i]));
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PDEBUG(DBG_TRACE, "Reading sensor register "
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"0x%x containing 0x%x ", address, *i2c_data);
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}
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out:
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return (err < 0) ? err : 0;
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}
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int s5k4aa_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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/* No sensor with a data width larger than 16 bits has yet been seen */
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if (len > 2 || !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(DBG_TRACE, "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 s5k4aa_init(struct sd *sd)
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{
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int i, err = 0;
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for (i = 0; i < ARRAY_SIZE(init_s5k4aa) && !err; i++) {
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u8 data[2] = {0x00, 0x00};
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switch (init_s5k4aa[i][0]) {
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case BRIDGE:
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err = m5602_write_bridge(sd,
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init_s5k4aa[i][1],
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init_s5k4aa[i][2]);
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break;
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case SENSOR:
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data[0] = init_s5k4aa[i][2];
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err = s5k4aa_write_sensor(sd,
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init_s5k4aa[i][1], data, 1);
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break;
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case SENSOR_LONG:
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data[0] = init_s5k4aa[i][2];
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data[1] = init_s5k4aa[i][3];
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err = s5k4aa_write_sensor(sd,
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init_s5k4aa[i][1], data, 2);
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break;
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default:
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info("Invalid stream command, exiting init");
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return -EINVAL;
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}
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}
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if (dump_sensor)
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s5k4aa_dump_registers(sd);
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if (!err && dmi_check_system(s5k4aa_vflip_dmi_table)) {
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u8 data = 0x02;
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info("vertical flip quirk active");
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s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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s5k4aa_read_sensor(sd, S5K4AA_READ_MODE, &data, 1);
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data |= S5K4AA_RM_V_FLIP;
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data &= ~S5K4AA_RM_H_FLIP;
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s5k4aa_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
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/* Decrement COLSTART to preserve color order (BGGR) */
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s5k4aa_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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data--;
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s5k4aa_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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/* Increment ROWSTART to preserve color order (BGGR) */
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s5k4aa_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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data++;
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s5k4aa_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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}
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return (err < 0) ? err : 0;
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}
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int s5k4aa_power_down(struct sd *sd)
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{
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return 0;
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}
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int s5k4aa_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 data = S5K4AA_PAGE_MAP_2;
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int err;
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err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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if (err < 0)
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goto out;
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err = s5k4aa_read_sensor(sd, S5K4AA_EXPOSURE_HI, &data, 1);
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if (err < 0)
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goto out;
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*val = data << 8;
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err = s5k4aa_read_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
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*val |= data;
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PDEBUG(DBG_V4L2_CID, "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 s5k4aa_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 data = S5K4AA_PAGE_MAP_2;
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int err;
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PDEBUG(DBG_V4L2_CID, "Set exposure to %d", val);
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err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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if (err < 0)
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goto out;
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data = (val >> 8) & 0xff;
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err = s5k4aa_write_sensor(sd, S5K4AA_EXPOSURE_HI, &data, 1);
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if (err < 0)
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goto out;
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data = val & 0xff;
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err = s5k4aa_write_sensor(sd, S5K4AA_EXPOSURE_LO, &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 s5k4aa_get_vflip(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 data = S5K4AA_PAGE_MAP_2;
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int err;
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err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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if (err < 0)
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goto out;
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err = s5k4aa_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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*val = (data & S5K4AA_RM_V_FLIP) >> 7;
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PDEBUG(DBG_V4L2_CID, "Read vertical flip %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 s5k4aa_set_vflip(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 data = S5K4AA_PAGE_MAP_2;
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int err;
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PDEBUG(DBG_V4L2_CID, "Set vertical flip to %d", val);
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err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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if (err < 0)
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goto out;
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err = s5k4aa_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
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if (err < 0)
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goto out;
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data = ((data & ~S5K4AA_RM_V_FLIP)
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| ((val & 0x01) << 7));
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err = s5k4aa_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
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if (err < 0)
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goto out;
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if (val) {
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err = s5k4aa_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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if (err < 0)
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goto out;
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data++;
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err = s5k4aa_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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} else {
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err = s5k4aa_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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if (err < 0)
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goto out;
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data--;
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err = s5k4aa_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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}
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out:
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return (err < 0) ? err : 0;
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}
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int s5k4aa_get_hflip(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 data = S5K4AA_PAGE_MAP_2;
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int err;
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err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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if (err < 0)
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goto out;
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err = s5k4aa_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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*val = (data & S5K4AA_RM_H_FLIP) >> 6;
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PDEBUG(DBG_V4L2_CID, "Read horizontal flip %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 s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
|
||
|
|
u8 data = S5K4AA_PAGE_MAP_2;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
PDEBUG(DBG_V4L2_CID, "Set horizontal flip to %d",
|
||
|
|
val);
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
data = ((data & ~S5K4AA_RM_H_FLIP) | ((val & 0x01) << 6));
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
if (val) {
|
||
|
|
err = s5k4aa_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
data++;
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
} else {
|
||
|
|
err = s5k4aa_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
data--;
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
|
||
|
|
}
|
||
|
|
out:
|
||
|
|
return (err < 0) ? err : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
|
||
|
|
{
|
||
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
||
|
|
u8 data = S5K4AA_PAGE_MAP_2;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
err = s5k4aa_read_sensor(sd, S5K4AA_GAIN_2, &data, 1);
|
||
|
|
*val = data;
|
||
|
|
PDEBUG(DBG_V4L2_CID, "Read gain %d", *val);
|
||
|
|
|
||
|
|
out:
|
||
|
|
return (err < 0) ? err : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
|
||
|
|
{
|
||
|
|
struct sd *sd = (struct sd *) gspca_dev;
|
||
|
|
u8 data = S5K4AA_PAGE_MAP_2;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
PDEBUG(DBG_V4L2_CID, "Set gain to %d", val);
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
|
||
|
|
if (err < 0)
|
||
|
|
goto out;
|
||
|
|
|
||
|
|
data = val & 0xff;
|
||
|
|
err = s5k4aa_write_sensor(sd, S5K4AA_GAIN_2, &data, 1);
|
||
|
|
|
||
|
|
out:
|
||
|
|
return (err < 0) ? err : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void s5k4aa_dump_registers(struct sd *sd)
|
||
|
|
{
|
||
|
|
int address;
|
||
|
|
u8 page, old_page;
|
||
|
|
s5k4aa_read_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
|
||
|
|
for (page = 0; page < 16; page++) {
|
||
|
|
s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
|
||
|
|
info("Dumping the s5k4aa register state for page 0x%x", page);
|
||
|
|
for (address = 0; address <= 0xff; address++) {
|
||
|
|
u8 value = 0;
|
||
|
|
s5k4aa_read_sensor(sd, address, &value, 1);
|
||
|
|
info("register 0x%x contains 0x%x",
|
||
|
|
address, value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
info("s5k4aa register state dump complete");
|
||
|
|
|
||
|
|
for (page = 0; page < 16; page++) {
|
||
|
|
s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
|
||
|
|
info("Probing for which registers that are "
|
||
|
|
"read/write for page 0x%x", page);
|
||
|
|
for (address = 0; address <= 0xff; address++) {
|
||
|
|
u8 old_value, ctrl_value, test_value = 0xff;
|
||
|
|
|
||
|
|
s5k4aa_read_sensor(sd, address, &old_value, 1);
|
||
|
|
s5k4aa_write_sensor(sd, address, &test_value, 1);
|
||
|
|
s5k4aa_read_sensor(sd, address, &ctrl_value, 1);
|
||
|
|
|
||
|
|
if (ctrl_value == test_value)
|
||
|
|
info("register 0x%x is writeable", address);
|
||
|
|
else
|
||
|
|
info("register 0x%x is read only", address);
|
||
|
|
|
||
|
|
/* Restore original value */
|
||
|
|
s5k4aa_write_sensor(sd, address, &old_value, 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
info("Read/write register probing complete");
|
||
|
|
s5k4aa_write_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
|
||
|
|
}
|