diff options
Diffstat (limited to 'drivers/media/usb/gspca/m5602/m5602_po1030.c')
| -rw-r--r-- | drivers/media/usb/gspca/m5602/m5602_po1030.c | 763 |
1 files changed, 763 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/m5602/m5602_po1030.c b/drivers/media/usb/gspca/m5602/m5602_po1030.c new file mode 100644 index 000000000000..b8771698cbcb --- /dev/null +++ b/drivers/media/usb/gspca/m5602/m5602_po1030.c @@ -0,0 +1,763 @@ +/* + * 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. + * + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include "m5602_po1030.h" + +static int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val); +static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val); +static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev, + __s32 val); +static int po1030_get_auto_white_balance(struct gspca_dev *gspca_dev, + __s32 *val); +static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev, + __s32 val); +static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev, + __s32 *val); + +static struct v4l2_pix_format po1030_modes[] = { + { + 640, + 480, + V4L2_PIX_FMT_SBGGR8, + V4L2_FIELD_NONE, + .sizeimage = 640 * 480, + .bytesperline = 640, + .colorspace = V4L2_COLORSPACE_SRGB, + .priv = 2 + } +}; + +static const struct ctrl po1030_ctrls[] = { +#define GAIN_IDX 0 + { + { + .id = V4L2_CID_GAIN, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "gain", + .minimum = 0x00, + .maximum = 0x4f, + .step = 0x1, + .default_value = PO1030_GLOBAL_GAIN_DEFAULT, + .flags = V4L2_CTRL_FLAG_SLIDER + }, + .set = po1030_set_gain, + .get = po1030_get_gain + }, +#define EXPOSURE_IDX 1 + { + { + .id = V4L2_CID_EXPOSURE, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "exposure", + .minimum = 0x00, + .maximum = 0x02ff, + .step = 0x1, + .default_value = PO1030_EXPOSURE_DEFAULT, + .flags = V4L2_CTRL_FLAG_SLIDER + }, + .set = po1030_set_exposure, + .get = po1030_get_exposure + }, +#define RED_BALANCE_IDX 2 + { + { + .id = V4L2_CID_RED_BALANCE, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "red balance", + .minimum = 0x00, + .maximum = 0xff, + .step = 0x1, + .default_value = PO1030_RED_GAIN_DEFAULT, + .flags = V4L2_CTRL_FLAG_SLIDER + }, + .set = po1030_set_red_balance, + .get = po1030_get_red_balance + }, +#define BLUE_BALANCE_IDX 3 + { + { + .id = V4L2_CID_BLUE_BALANCE, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "blue balance", + .minimum = 0x00, + .maximum = 0xff, + .step = 0x1, + .default_value = PO1030_BLUE_GAIN_DEFAULT, + .flags = V4L2_CTRL_FLAG_SLIDER + }, + .set = po1030_set_blue_balance, + .get = po1030_get_blue_balance + }, +#define HFLIP_IDX 4 + { + { + .id = V4L2_CID_HFLIP, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "horizontal flip", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, + .set = po1030_set_hflip, + .get = po1030_get_hflip + }, +#define VFLIP_IDX 5 + { + { + .id = V4L2_CID_VFLIP, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "vertical flip", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, + .set = po1030_set_vflip, + .get = po1030_get_vflip + }, +#define AUTO_WHITE_BALANCE_IDX 6 + { + { + .id = V4L2_CID_AUTO_WHITE_BALANCE, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "auto white balance", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, + .set = po1030_set_auto_white_balance, + .get = po1030_get_auto_white_balance + }, +#define AUTO_EXPOSURE_IDX 7 + { + { + .id = V4L2_CID_EXPOSURE_AUTO, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "auto exposure", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 0, + }, + .set = po1030_set_auto_exposure, + .get = po1030_get_auto_exposure + }, +#define GREEN_BALANCE_IDX 8 + { + { + .id = M5602_V4L2_CID_GREEN_BALANCE, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "green balance", + .minimum = 0x00, + .maximum = 0xff, + .step = 0x1, + .default_value = PO1030_GREEN_GAIN_DEFAULT, + .flags = V4L2_CTRL_FLAG_SLIDER + }, + .set = po1030_set_green_balance, + .get = po1030_get_green_balance + }, +}; + +static void po1030_dump_registers(struct sd *sd); + +int po1030_probe(struct sd *sd) +{ + u8 dev_id_h = 0, i; + s32 *sensor_settings; + + if (force_sensor) { + if (force_sensor == PO1030_SENSOR) { + pr_info("Forcing a %s sensor\n", po1030.name); + goto sensor_found; + } + /* If we want to force another sensor, don't try to probe this + * one */ + return -ENODEV; + } + + PDEBUG(D_PROBE, "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, PO1030_DEVID_H, &dev_id_h, 1)) + return -ENODEV; + + if (dev_id_h == 0x30) { + pr_info("Detected a po1030 sensor\n"); + goto sensor_found; + } + return -ENODEV; + +sensor_found: + sensor_settings = kmalloc( + ARRAY_SIZE(po1030_ctrls) * sizeof(s32), GFP_KERNEL); + if (!sensor_settings) + return -ENOMEM; + + sd->gspca_dev.cam.cam_mode = po1030_modes; + sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes); + sd->desc->ctrls = po1030_ctrls; + sd->desc->nctrls = ARRAY_SIZE(po1030_ctrls); + + for (i = 0; i < ARRAY_SIZE(po1030_ctrls); i++) + sensor_settings[i] = po1030_ctrls[i].qctrl.default_value; + sd->sensor_priv = sensor_settings; + + return 0; +} + +int po1030_init(struct sd *sd) +{ + s32 *sensor_settings = sd->sensor_priv; + 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: + pr_info("Invalid stream command, exiting init\n"); + return -EINVAL; + } + } + if (err < 0) + return err; + + if (dump_sensor) + po1030_dump_registers(sd); + + err = po1030_set_exposure(&sd->gspca_dev, + sensor_settings[EXPOSURE_IDX]); + if (err < 0) + return err; + + err = po1030_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]); + if (err < 0) + return err; + + err = po1030_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]); + if (err < 0) + return err; + + err = po1030_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]); + if (err < 0) + return err; + + err = po1030_set_red_balance(&sd->gspca_dev, + sensor_settings[RED_BALANCE_IDX]); + if (err < 0) + return err; + + err = po1030_set_blue_balance(&sd->gspca_dev, + sensor_settings[BLUE_BALANCE_IDX]); + if (err < 0) + return err; + + err = po1030_set_green_balance(&sd->gspca_dev, + sensor_settings[GREEN_BALANCE_IDX]); + if (err < 0) + return err; + + err = po1030_set_auto_white_balance(&sd->gspca_dev, + sensor_settings[AUTO_WHITE_BALANCE_IDX]); + if (err < 0) + return err; + + err = po1030_set_auto_exposure(&sd->gspca_dev, + sensor_settings[AUTO_EXPOSURE_IDX]); + return err; +} + +int po1030_start(struct sd *sd) +{ + struct cam *cam = &sd->gspca_dev.cam; + int i, err = 0; + int width = cam->cam_mode[sd->gspca_dev.curr_mode].width; + int height = cam->cam_mode[sd->gspca_dev.curr_mode].height; + int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv; + u8 data; + + switch (width) { + case 320: + data = PO1030_SUBSAMPLING; + err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1); + if (err < 0) + return err; + + data = ((width + 3) >> 8) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1); + if (err < 0) + return err; + + data = (width + 3) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1); + if (err < 0) + return err; + + data = ((height + 1) >> 8) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1); + if (err < 0) + return err; + + data = (height + 1) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1); + + height += 6; + width -= 1; + break; + + case 640: + data = 0; + err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1); + if (err < 0) + return err; + + data = ((width + 7) >> 8) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1); + if (err < 0) + return err; + + data = (width + 7) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1); + if (err < 0) + return err; + + data = ((height + 3) >> 8) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1); + if (err < 0) + return err; + + data = (height + 3) & 0xff; + err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1); + + height += 12; + width -= 2; + break; + } + err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, + ((ver_offs >> 8) & 0xff)); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff)); + if (err < 0) + return err; + + for (i = 0; i < 2 && !err; i++) + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff)); + if (err < 0) + return err; + + for (i = 0; i < 2 && !err; i++) + err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); + + for (i = 0; i < 2 && !err; i++) + err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); + + for (i = 0; i < 2 && !err; i++) + err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff)); + if (err < 0) + return err; + + err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); + return err; +} + +static int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[EXPOSURE_IDX]; + PDEBUG(D_V4L2, "Exposure read as %d", *val); + return 0; +} + +static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[EXPOSURE_IDX] = val; + 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_INTEGLINES_H, + &i2c_data, 1); + if (err < 0) + return err; + + i2c_data = (val & 0xff); + PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x", + i2c_data); + err = m5602_write_sensor(sd, PO1030_INTEGLINES_M, + &i2c_data, 1); + + return err; +} + +static int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[GAIN_IDX]; + PDEBUG(D_V4L2, "Read global gain %d", *val); + return 0; +} + +static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[GAIN_IDX] = val; + + i2c_data = val & 0xff; + PDEBUG(D_V4L2, "Set global gain to %d", i2c_data); + err = m5602_write_sensor(sd, PO1030_GLOBALGAIN, + &i2c_data, 1); + return err; +} + +static int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[HFLIP_IDX]; + PDEBUG(D_V4L2, "Read hflip %d", *val); + + return 0; +} + +static int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[HFLIP_IDX] = val; + + PDEBUG(D_V4L2, "Set hflip %d", val); + err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1); + if (err < 0) + return err; + + i2c_data = (0x7f & i2c_data) | ((val & 0x01) << 7); + + err = m5602_write_sensor(sd, PO1030_CONTROL2, + &i2c_data, 1); + + return err; +} + +static int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[VFLIP_IDX]; + PDEBUG(D_V4L2, "Read vflip %d", *val); + + return 0; +} + +static int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[VFLIP_IDX] = val; + + PDEBUG(D_V4L2, "Set vflip %d", val); + err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1); + if (err < 0) + return err; + + i2c_data = (i2c_data & 0xbf) | ((val & 0x01) << 6); + + err = m5602_write_sensor(sd, PO1030_CONTROL2, + &i2c_data, 1); + + return err; +} + +static int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[RED_BALANCE_IDX]; + PDEBUG(D_V4L2, "Read red gain %d", *val); + return 0; +} + +static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[RED_BALANCE_IDX] = val; + + i2c_data = val & 0xff; + PDEBUG(D_V4L2, "Set red gain to %d", i2c_data); + err = m5602_write_sensor(sd, PO1030_RED_GAIN, + &i2c_data, 1); + return err; +} + +static int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[BLUE_BALANCE_IDX]; + PDEBUG(D_V4L2, "Read blue gain %d", *val); + + return 0; +} + +static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[BLUE_BALANCE_IDX] = val; + + i2c_data = val & 0xff; + PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data); + err = m5602_write_sensor(sd, PO1030_BLUE_GAIN, + &i2c_data, 1); + + return err; +} + +static int po1030_get_green_balance(struct gspca_dev *gspca_dev, __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[GREEN_BALANCE_IDX]; + PDEBUG(D_V4L2, "Read green gain %d", *val); + + return 0; +} + +static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[GREEN_BALANCE_IDX] = val; + i2c_data = val & 0xff; + PDEBUG(D_V4L2, "Set green gain to %d", i2c_data); + + err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN, + &i2c_data, 1); + if (err < 0) + return err; + + return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN, + &i2c_data, 1); +} + +static int po1030_get_auto_white_balance(struct gspca_dev *gspca_dev, + __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[AUTO_WHITE_BALANCE_IDX]; + PDEBUG(D_V4L2, "Auto white balancing is %d", *val); + + return 0; +} + +static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev, + __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[AUTO_WHITE_BALANCE_IDX] = val; + + err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); + if (err < 0) + return err; + + PDEBUG(D_V4L2, "Set auto white balance to %d", val); + i2c_data = (i2c_data & 0xfe) | (val & 0x01); + err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); + return err; +} + +static int po1030_get_auto_exposure(struct gspca_dev *gspca_dev, + __s32 *val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + + *val = sensor_settings[AUTO_EXPOSURE_IDX]; + PDEBUG(D_V4L2, "Auto exposure is %d", *val); + return 0; +} + +static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev, + __s32 val) +{ + struct sd *sd = (struct sd *) gspca_dev; + s32 *sensor_settings = sd->sensor_priv; + u8 i2c_data; + int err; + + sensor_settings[AUTO_EXPOSURE_IDX] = val; + err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); + if (err < 0) + return err; + + PDEBUG(D_V4L2, "Set auto exposure to %d", val); + i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1); + return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1); +} + +void po1030_disconnect(struct sd *sd) +{ + sd->sensor = NULL; + kfree(sd->sensor_priv); +} + +static void po1030_dump_registers(struct sd *sd) +{ + int address; + u8 value = 0; + + pr_info("Dumping the po1030 sensor core registers\n"); + for (address = 0; address < 0x7f; address++) { + m5602_read_sensor(sd, address, &value, 1); + pr_info("register 0x%x contains 0x%x\n", address, value); + } + + pr_info("po1030 register state dump complete\n"); + + pr_info("Probing for which registers that are read/write\n"); + 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]) + pr_info("register 0x%x is writeable\n", address); + else + pr_info("register 0x%x is read only\n", address); + + /* Restore original value */ + m5602_write_sensor(sd, address, &old_value, 1); + } +} |