forked from Minki/linux
4feb24fc26
Convert the s5k4aa sensor to use the common read_sensor function Signed-off-by: Erik Andrén <erik.andren@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
455 lines
11 KiB
C
455 lines
11 KiB
C
/*
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* Driver for the s5k4aa 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_s5k4aa.h"
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static
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const
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struct dmi_system_id s5k4aa_vflip_dmi_table[] = {
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{
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.ident = "Fujitsu-Siemens Amilo Xa 2528",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xa 2528")
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}
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}, {
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.ident = "Fujitsu-Siemens Amilo Xi 2550",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
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DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 2550")
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}
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}, {
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.ident = "MSI GX700",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
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DMI_MATCH(DMI_PRODUCT_NAME, "GX700"),
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DMI_MATCH(DMI_BIOS_DATE, "07/26/2007")
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}
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}, {
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.ident = "MSI GX700/GX705/EX700",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
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DMI_MATCH(DMI_PRODUCT_NAME, "GX700/GX705/EX700")
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}
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},
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{ }
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};
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static void s5k4aa_dump_registers(struct sd *sd);
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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 = m5602_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 = m5602_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 (m5602_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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sd->desc->ctrls = s5k4aa.ctrls;
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sd->desc->nctrls = s5k4aa.nctrls;
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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(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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out:
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return err;
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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 = m5602_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 = m5602_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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m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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m5602_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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m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
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/* Decrement COLSTART to preserve color order (BGGR) */
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m5602_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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data--;
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m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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/* Increment ROWSTART to preserve color order (BGGR) */
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m5602_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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data++;
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m5602_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 = m5602_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 = m5602_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 = m5602_read_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
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*val |= data;
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PDEBUG(D_V4L2, "Read exposure %d", *val);
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out:
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return err;
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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(D_V4L2, "Set exposure to %d", val);
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err = m5602_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 = m5602_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 = m5602_write_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
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out:
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return err;
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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 = m5602_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 = m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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*val = (data & S5K4AA_RM_V_FLIP) >> 7;
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PDEBUG(D_V4L2, "Read vertical flip %d", *val);
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out:
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return err;
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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(D_V4L2, "Set vertical flip to %d", val);
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err = m5602_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 = m5602_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 = m5602_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 = m5602_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 = m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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} else {
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err = m5602_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 = m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
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}
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out:
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return err;
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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 = m5602_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 = m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
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*val = (data & S5K4AA_RM_H_FLIP) >> 6;
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PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
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out:
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return err;
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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;
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u8 data = S5K4AA_PAGE_MAP_2;
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int err;
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PDEBUG(D_V4L2, "Set horizontal flip to %d",
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val);
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err = m5602_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 = m5602_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_H_FLIP) | ((val & 0x01) << 6));
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err = m5602_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 = m5602_read_sensor(sd, S5K4AA_COLSTART_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 = m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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if (err < 0)
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goto out;
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} else {
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err = m5602_read_sensor(sd, S5K4AA_COLSTART_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 = m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
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}
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out:
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return err;
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}
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int s5k4aa_get_gain(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 = m5602_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 = m5602_read_sensor(sd, S5K4AA_GAIN_2, &data, 1);
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*val = data;
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PDEBUG(D_V4L2, "Read gain %d", *val);
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out:
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return err;
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}
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int s5k4aa_set_gain(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(D_V4L2, "Set gain to %d", val);
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err = m5602_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 & 0xff;
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err = m5602_write_sensor(sd, S5K4AA_GAIN_2, &data, 1);
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out:
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return err;
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}
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static void s5k4aa_dump_registers(struct sd *sd)
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{
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int address;
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u8 page, old_page;
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m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
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for (page = 0; page < 16; page++) {
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m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
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info("Dumping the s5k4aa register state for page 0x%x", page);
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for (address = 0; address <= 0xff; address++) {
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u8 value = 0;
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m5602_read_sensor(sd, address, &value, 1);
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info("register 0x%x contains 0x%x",
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address, value);
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}
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}
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info("s5k4aa register state dump complete");
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for (page = 0; page < 16; page++) {
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m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
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info("Probing for which registers that are "
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"read/write for page 0x%x", page);
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for (address = 0; address <= 0xff; address++) {
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u8 old_value, ctrl_value, test_value = 0xff;
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m5602_read_sensor(sd, address, &old_value, 1);
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m5602_write_sensor(sd, address, &test_value, 1);
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m5602_read_sensor(sd, address, &ctrl_value, 1);
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if (ctrl_value == test_value)
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info("register 0x%x is writeable", address);
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else
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info("register 0x%x is read only", address);
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/* Restore original value */
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m5602_write_sensor(sd, address, &old_value, 1);
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}
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}
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info("Read/write register probing complete");
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m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
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}
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