| /* |
| * 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" |
| |
| static void mt9m111_dump_registers(struct sd *sd); |
| |
| 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]; |
| m5602_write_sensor(sd, |
| preinit_mt9m111[i][1], data, 2); |
| } |
| } |
| |
| if (m5602_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) && !err; 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 = m5602_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 = m5602_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; |
| } |
| |
| 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 = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2); |
| if (err < 0) |
| goto out; |
| |
| err = m5602_read_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, data, 2); |
| if (err < 0) |
| goto out; |
| |
| data[0] = (data[0] & 0xfe) | val; |
| err = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, |
| data, 2); |
| out: |
| return err; |
| } |
| |
| 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 = m5602_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; |
| } |
| |
| 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 = m5602_write_sensor(sd, MT9M111_PAGE_MAP, data, 2); |
| if (err < 0) |
| goto out; |
| |
| err = m5602_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 = m5602_write_sensor(sd, MT9M111_SC_R_MODE_CONTEXT_B, |
| data, 2); |
| out: |
| return err; |
| } |
| |
| 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 = m5602_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; |
| } |
| |
| 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 = m5602_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 = m5602_write_sensor(sd, MT9M111_SC_GLOBAL_GAIN, |
| data, 2); |
| out: |
| return err; |
| } |
| |
| 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; |
| } |
| |
| static 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; |
| m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2); |
| for (address = 0; address < 0xff; address++) { |
| m5602_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; |
| m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2); |
| for (address = 0; address < 0xff; address++) { |
| m5602_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; |
| m5602_write_sensor(sd, MT9M111_PAGE_MAP, value, 2); |
| for (address = 0; address < 0xff; address++) { |
| m5602_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"); |
| } |