| /* |
| * Driver for the po1030 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_po1030.h" |
| |
| static void po1030_dump_registers(struct sd *sd); |
| |
| int po1030_probe(struct sd *sd) |
| { |
| u8 prod_id = 0, ver_id = 0, i; |
| |
| if (force_sensor) { |
| if (force_sensor == PO1030_SENSOR) { |
| info("Forcing a %s sensor", po1030.name); |
| goto sensor_found; |
| } |
| /* If we want to force another sensor, don't try to probe this |
| * one */ |
| return -ENODEV; |
| } |
| |
| info("Probing for a po1030 sensor"); |
| |
| /* Run the pre-init to actually probe the unit */ |
| for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) { |
| u8 data = preinit_po1030[i][2]; |
| if (preinit_po1030[i][0] == SENSOR) |
| m5602_write_sensor(sd, |
| preinit_po1030[i][1], &data, 1); |
| else |
| m5602_write_bridge(sd, preinit_po1030[i][1], data); |
| } |
| |
| if (m5602_read_sensor(sd, 0x3, &prod_id, 1)) |
| return -ENODEV; |
| |
| if (m5602_read_sensor(sd, 0x4, &ver_id, 1)) |
| return -ENODEV; |
| |
| if ((prod_id == 0x02) && (ver_id == 0xef)) { |
| info("Detected a po1030 sensor"); |
| goto sensor_found; |
| } |
| return -ENODEV; |
| |
| sensor_found: |
| sd->gspca_dev.cam.cam_mode = po1030.modes; |
| sd->gspca_dev.cam.nmodes = po1030.nmodes; |
| sd->desc->ctrls = po1030.ctrls; |
| sd->desc->nctrls = po1030.nctrls; |
| return 0; |
| } |
| |
| int po1030_init(struct sd *sd) |
| { |
| int i, err = 0; |
| |
| /* Init the sensor */ |
| for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) { |
| u8 data[2] = {0x00, 0x00}; |
| |
| switch (init_po1030[i][0]) { |
| case BRIDGE: |
| err = m5602_write_bridge(sd, |
| init_po1030[i][1], |
| init_po1030[i][2]); |
| break; |
| |
| case SENSOR: |
| data[0] = init_po1030[i][2]; |
| err = m5602_write_sensor(sd, |
| init_po1030[i][1], data, 1); |
| break; |
| |
| default: |
| info("Invalid stream command, exiting init"); |
| return -EINVAL; |
| } |
| } |
| |
| if (dump_sensor) |
| po1030_dump_registers(sd); |
| |
| return err; |
| } |
| |
| int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_H, |
| &i2c_data, 1); |
| if (err < 0) |
| goto out; |
| *val = (i2c_data << 8); |
| |
| err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_M, |
| &i2c_data, 1); |
| *val |= i2c_data; |
| |
| PDEBUG(D_V4L2, "Exposure read as %d", *val); |
| out: |
| return err; |
| } |
| |
| int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff); |
| |
| i2c_data = ((val & 0xff00) >> 8); |
| PDEBUG(D_V4L2, "Set exposure to high byte to 0x%x", |
| i2c_data); |
| |
| err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_H, |
| &i2c_data, 1); |
| if (err < 0) |
| goto out; |
| |
| i2c_data = (val & 0xff); |
| PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x", |
| i2c_data); |
| err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_M, |
| &i2c_data, 1); |
| |
| out: |
| return err; |
| } |
| |
| int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN, |
| &i2c_data, 1); |
| *val = i2c_data; |
| PDEBUG(D_V4L2, "Read global gain %d", *val); |
| |
| return err; |
| } |
| |
| int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_CONTROL2, |
| &i2c_data, 1); |
| |
| *val = (i2c_data >> 7) & 0x01 ; |
| |
| PDEBUG(D_V4L2, "Read hflip %d", *val); |
| |
| return err; |
| } |
| |
| int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| PDEBUG(D_V4L2, "Set hflip %d", val); |
| |
| i2c_data = (val & 0x01) << 7; |
| |
| err = m5602_write_sensor(sd, PO1030_REG_CONTROL2, |
| &i2c_data, 1); |
| |
| return err; |
| } |
| |
| int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN, |
| &i2c_data, 1); |
| |
| *val = (i2c_data >> 6) & 0x01; |
| |
| PDEBUG(D_V4L2, "Read vflip %d", *val); |
| |
| return err; |
| } |
| |
| int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| PDEBUG(D_V4L2, "Set vflip %d", val); |
| |
| i2c_data = (val & 0x01) << 6; |
| |
| err = m5602_write_sensor(sd, PO1030_REG_CONTROL2, |
| &i2c_data, 1); |
| |
| return err; |
| } |
| |
| int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| i2c_data = val & 0xff; |
| PDEBUG(D_V4L2, "Set global gain to %d", i2c_data); |
| err = m5602_write_sensor(sd, PO1030_REG_GLOBALGAIN, |
| &i2c_data, 1); |
| return err; |
| } |
| |
| int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_RED_GAIN, |
| &i2c_data, 1); |
| *val = i2c_data; |
| PDEBUG(D_V4L2, "Read red gain %d", *val); |
| return err; |
| } |
| |
| int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| i2c_data = val & 0xff; |
| PDEBUG(D_V4L2, "Set red gain to %d", i2c_data); |
| err = m5602_write_sensor(sd, PO1030_REG_RED_GAIN, |
| &i2c_data, 1); |
| return err; |
| } |
| |
| int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| |
| err = m5602_read_sensor(sd, PO1030_REG_BLUE_GAIN, |
| &i2c_data, 1); |
| *val = i2c_data; |
| PDEBUG(D_V4L2, "Read blue gain %d", *val); |
| |
| return err; |
| } |
| |
| int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u8 i2c_data; |
| int err; |
| i2c_data = val & 0xff; |
| PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data); |
| err = m5602_write_sensor(sd, PO1030_REG_BLUE_GAIN, |
| &i2c_data, 1); |
| |
| return err; |
| } |
| |
| int po1030_power_down(struct sd *sd) |
| { |
| return 0; |
| } |
| |
| static void po1030_dump_registers(struct sd *sd) |
| { |
| int address; |
| u8 value = 0; |
| |
| info("Dumping the po1030 sensor core registers"); |
| for (address = 0; address < 0x7f; address++) { |
| m5602_read_sensor(sd, address, &value, 1); |
| info("register 0x%x contains 0x%x", |
| address, value); |
| } |
| |
| info("po1030 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}; |
| |
| m5602_read_sensor(sd, address, &old_value, 1); |
| m5602_write_sensor(sd, address, test_value, 1); |
| m5602_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 */ |
| m5602_write_sensor(sd, address, &old_value, 1); |
| } |
| } |