summaryrefslogtreecommitdiffstats
path: root/drivers/media/usb/gspca/m5602/m5602_s5k4aa.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/usb/gspca/m5602/m5602_s5k4aa.c')
-rw-r--r--drivers/media/usb/gspca/m5602/m5602_s5k4aa.c726
1 files changed, 726 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/m5602/m5602_s5k4aa.c b/drivers/media/usb/gspca/m5602/m5602_s5k4aa.c
new file mode 100644
index 000000000000..cc8ec3f7e8dc
--- /dev/null
+++ b/drivers/media/usb/gspca/m5602/m5602_s5k4aa.c
@@ -0,0 +1,726 @@
+/*
+ * Driver for the s5k4aa 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_s5k4aa.h"
+
+static int s5k4aa_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_noise(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k4aa_get_brightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k4aa_set_brightness(struct gspca_dev *gspca_dev, __s32 val);
+
+static
+ const
+ struct dmi_system_id s5k4aa_vflip_dmi_table[] = {
+ {
+ .ident = "BRUNEINIT",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "BRUNENIT"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "BRUNENIT"),
+ DMI_MATCH(DMI_BOARD_VERSION, "00030D0000000001")
+ }
+ }, {
+ .ident = "Fujitsu-Siemens Amilo Xa 2528",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xa 2528")
+ }
+ }, {
+ .ident = "Fujitsu-Siemens Amilo Xi 2428",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 2428")
+ }
+ }, {
+ .ident = "Fujitsu-Siemens Amilo Xi 2528",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 2528")
+ }
+ }, {
+ .ident = "Fujitsu-Siemens Amilo Xi 2550",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 2550")
+ }
+ }, {
+ .ident = "Fujitsu-Siemens Amilo Pa 2548",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2548")
+ }
+ }, {
+ .ident = "MSI GX700",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX700"),
+ DMI_MATCH(DMI_BIOS_DATE, "12/02/2008")
+ }
+ }, {
+ .ident = "MSI GX700",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX700"),
+ DMI_MATCH(DMI_BIOS_DATE, "07/26/2007")
+ }
+ }, {
+ .ident = "MSI GX700",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX700"),
+ DMI_MATCH(DMI_BIOS_DATE, "07/19/2007")
+ }
+ }, {
+ .ident = "MSI GX700/GX705/EX700",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "GX700/GX705/EX700")
+ }
+ }, {
+ .ident = "MSI L735",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MS-1717X")
+ }
+ }, {
+ .ident = "Lenovo Y300",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "L3000 Y300"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Y300")
+ }
+ },
+ { }
+};
+
+static struct v4l2_pix_format s5k4aa_modes[] = {
+ {
+ 640,
+ 480,
+ V4L2_PIX_FMT_SBGGR8,
+ V4L2_FIELD_NONE,
+ .sizeimage =
+ 640 * 480,
+ .bytesperline = 640,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0
+ },
+ {
+ 1280,
+ 1024,
+ V4L2_PIX_FMT_SBGGR8,
+ V4L2_FIELD_NONE,
+ .sizeimage =
+ 1280 * 1024,
+ .bytesperline = 1280,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0
+ }
+};
+
+static const struct ctrl s5k4aa_ctrls[] = {
+#define VFLIP_IDX 0
+ {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "vertical flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0
+ },
+ .set = s5k4aa_set_vflip,
+ .get = s5k4aa_get_vflip
+ },
+#define HFLIP_IDX 1
+ {
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "horizontal flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0
+ },
+ .set = s5k4aa_set_hflip,
+ .get = s5k4aa_get_hflip
+ },
+#define GAIN_IDX 2
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = 0,
+ .maximum = 127,
+ .step = 1,
+ .default_value = S5K4AA_DEFAULT_GAIN,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = s5k4aa_set_gain,
+ .get = s5k4aa_get_gain
+ },
+#define EXPOSURE_IDX 3
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Exposure",
+ .minimum = 13,
+ .maximum = 0xfff,
+ .step = 1,
+ .default_value = 0x100,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = s5k4aa_set_exposure,
+ .get = s5k4aa_get_exposure
+ },
+#define NOISE_SUPP_IDX 4
+ {
+ {
+ .id = V4L2_CID_PRIVATE_BASE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Noise suppression (smoothing)",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ },
+ .set = s5k4aa_set_noise,
+ .get = s5k4aa_get_noise
+ },
+#define BRIGHTNESS_IDX 5
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 0x1f,
+ .step = 1,
+ .default_value = S5K4AA_DEFAULT_BRIGHTNESS,
+ },
+ .set = s5k4aa_set_brightness,
+ .get = s5k4aa_get_brightness
+ },
+
+};
+
+static void s5k4aa_dump_registers(struct sd *sd);
+
+int s5k4aa_probe(struct sd *sd)
+{
+ u8 prod_id[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+ const u8 expected_prod_id[6] = {0x00, 0x10, 0x00, 0x4b, 0x33, 0x75};
+ int i, err = 0;
+ s32 *sensor_settings;
+
+ if (force_sensor) {
+ if (force_sensor == S5K4AA_SENSOR) {
+ pr_info("Forcing a %s sensor\n", s5k4aa.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 s5k4aa sensor");
+
+ /* Preinit the sensor */
+ for (i = 0; i < ARRAY_SIZE(preinit_s5k4aa) && !err; i++) {
+ u8 data[2] = {0x00, 0x00};
+
+ switch (preinit_s5k4aa[i][0]) {
+ case BRIDGE:
+ err = m5602_write_bridge(sd,
+ preinit_s5k4aa[i][1],
+ preinit_s5k4aa[i][2]);
+ break;
+
+ case SENSOR:
+ data[0] = preinit_s5k4aa[i][2];
+ err = m5602_write_sensor(sd,
+ preinit_s5k4aa[i][1],
+ data, 1);
+ break;
+
+ case SENSOR_LONG:
+ data[0] = preinit_s5k4aa[i][2];
+ data[1] = preinit_s5k4aa[i][3];
+ err = m5602_write_sensor(sd,
+ preinit_s5k4aa[i][1],
+ data, 2);
+ break;
+ default:
+ pr_info("Invalid stream command, exiting init\n");
+ return -EINVAL;
+ }
+ }
+
+ /* Test some registers, but we don't know their exact meaning yet */
+ if (m5602_read_sensor(sd, 0x00, prod_id, 2))
+ return -ENODEV;
+ if (m5602_read_sensor(sd, 0x02, prod_id+2, 2))
+ return -ENODEV;
+ if (m5602_read_sensor(sd, 0x04, prod_id+4, 2))
+ return -ENODEV;
+
+ if (memcmp(prod_id, expected_prod_id, sizeof(prod_id)))
+ return -ENODEV;
+ else
+ pr_info("Detected a s5k4aa sensor\n");
+
+sensor_found:
+ sensor_settings = kmalloc(
+ ARRAY_SIZE(s5k4aa_ctrls) * sizeof(s32), GFP_KERNEL);
+ if (!sensor_settings)
+ return -ENOMEM;
+
+ sd->gspca_dev.cam.cam_mode = s5k4aa_modes;
+ sd->gspca_dev.cam.nmodes = ARRAY_SIZE(s5k4aa_modes);
+ sd->desc->ctrls = s5k4aa_ctrls;
+ sd->desc->nctrls = ARRAY_SIZE(s5k4aa_ctrls);
+
+ for (i = 0; i < ARRAY_SIZE(s5k4aa_ctrls); i++)
+ sensor_settings[i] = s5k4aa_ctrls[i].qctrl.default_value;
+ sd->sensor_priv = sensor_settings;
+
+ return 0;
+}
+
+int s5k4aa_start(struct sd *sd)
+{
+ int i, err = 0;
+ u8 data[2];
+ struct cam *cam = &sd->gspca_dev.cam;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ switch (cam->cam_mode[sd->gspca_dev.curr_mode].width) {
+ case 1280:
+ PDEBUG(D_V4L2, "Configuring camera for SXGA mode");
+
+ for (i = 0; i < ARRAY_SIZE(SXGA_s5k4aa); i++) {
+ switch (SXGA_s5k4aa[i][0]) {
+ case BRIDGE:
+ err = m5602_write_bridge(sd,
+ SXGA_s5k4aa[i][1],
+ SXGA_s5k4aa[i][2]);
+ break;
+
+ case SENSOR:
+ data[0] = SXGA_s5k4aa[i][2];
+ err = m5602_write_sensor(sd,
+ SXGA_s5k4aa[i][1],
+ data, 1);
+ break;
+
+ case SENSOR_LONG:
+ data[0] = SXGA_s5k4aa[i][2];
+ data[1] = SXGA_s5k4aa[i][3];
+ err = m5602_write_sensor(sd,
+ SXGA_s5k4aa[i][1],
+ data, 2);
+ break;
+
+ default:
+ pr_err("Invalid stream command, exiting init\n");
+ return -EINVAL;
+ }
+ }
+ err = s5k4aa_set_noise(&sd->gspca_dev, 0);
+ if (err < 0)
+ return err;
+ break;
+
+ case 640:
+ PDEBUG(D_V4L2, "Configuring camera for VGA mode");
+
+ for (i = 0; i < ARRAY_SIZE(VGA_s5k4aa); i++) {
+ switch (VGA_s5k4aa[i][0]) {
+ case BRIDGE:
+ err = m5602_write_bridge(sd,
+ VGA_s5k4aa[i][1],
+ VGA_s5k4aa[i][2]);
+ break;
+
+ case SENSOR:
+ data[0] = VGA_s5k4aa[i][2];
+ err = m5602_write_sensor(sd,
+ VGA_s5k4aa[i][1],
+ data, 1);
+ break;
+
+ case SENSOR_LONG:
+ data[0] = VGA_s5k4aa[i][2];
+ data[1] = VGA_s5k4aa[i][3];
+ err = m5602_write_sensor(sd,
+ VGA_s5k4aa[i][1],
+ data, 2);
+ break;
+
+ default:
+ pr_err("Invalid stream command, exiting init\n");
+ return -EINVAL;
+ }
+ }
+ err = s5k4aa_set_noise(&sd->gspca_dev, 1);
+ if (err < 0)
+ return err;
+ break;
+ }
+ if (err < 0)
+ return err;
+
+ err = s5k4aa_set_exposure(&sd->gspca_dev,
+ sensor_settings[EXPOSURE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k4aa_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k4aa_set_brightness(&sd->gspca_dev,
+ sensor_settings[BRIGHTNESS_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k4aa_set_noise(&sd->gspca_dev, sensor_settings[NOISE_SUPP_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k4aa_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
+ if (err < 0)
+ return err;
+
+ return s5k4aa_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
+}
+
+int s5k4aa_init(struct sd *sd)
+{
+ int i, err = 0;
+
+ for (i = 0; i < ARRAY_SIZE(init_s5k4aa) && !err; i++) {
+ u8 data[2] = {0x00, 0x00};
+
+ switch (init_s5k4aa[i][0]) {
+ case BRIDGE:
+ err = m5602_write_bridge(sd,
+ init_s5k4aa[i][1],
+ init_s5k4aa[i][2]);
+ break;
+
+ case SENSOR:
+ data[0] = init_s5k4aa[i][2];
+ err = m5602_write_sensor(sd,
+ init_s5k4aa[i][1], data, 1);
+ break;
+
+ case SENSOR_LONG:
+ data[0] = init_s5k4aa[i][2];
+ data[1] = init_s5k4aa[i][3];
+ err = m5602_write_sensor(sd,
+ init_s5k4aa[i][1], data, 2);
+ break;
+ default:
+ pr_info("Invalid stream command, exiting init\n");
+ return -EINVAL;
+ }
+ }
+
+ if (dump_sensor)
+ s5k4aa_dump_registers(sd);
+
+ return err;
+}
+
+static int s5k4aa_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, "Read exposure %d", *val);
+
+ return 0;
+}
+
+static int s5k4aa_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[EXPOSURE_IDX] = val;
+ PDEBUG(D_V4L2, "Set exposure to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+ data = (val >> 8) & 0xff;
+ err = m5602_write_sensor(sd, S5K4AA_EXPOSURE_HI, &data, 1);
+ if (err < 0)
+ return err;
+ data = val & 0xff;
+ err = m5602_write_sensor(sd, S5K4AA_EXPOSURE_LO, &data, 1);
+
+ return err;
+}
+
+static int s5k4aa_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 vertical flip %d", *val);
+
+ return 0;
+}
+
+static int s5k4aa_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[VFLIP_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set vertical flip to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+
+ err = m5602_read_sensor(sd, S5K4AA_READ_MODE, &data, 1);
+ if (err < 0)
+ return err;
+
+ if (dmi_check_system(s5k4aa_vflip_dmi_table))
+ val = !val;
+
+ data = ((data & ~S5K4AA_RM_V_FLIP) | ((val & 0x01) << 7));
+ err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
+ if (err < 0)
+ return err;
+
+ err = m5602_read_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
+ if (err < 0)
+ return err;
+ if (val)
+ data &= 0xfe;
+ else
+ data |= 0x01;
+ err = m5602_write_sensor(sd, S5K4AA_ROWSTART_LO, &data, 1);
+ return err;
+}
+
+static int s5k4aa_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 horizontal flip %d", *val);
+
+ return 0;
+}
+
+static int s5k4aa_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[HFLIP_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+
+ err = m5602_read_sensor(sd, S5K4AA_READ_MODE, &data, 1);
+ if (err < 0)
+ return err;
+
+ if (dmi_check_system(s5k4aa_vflip_dmi_table))
+ val = !val;
+
+ data = ((data & ~S5K4AA_RM_H_FLIP) | ((val & 0x01) << 6));
+ err = m5602_write_sensor(sd, S5K4AA_READ_MODE, &data, 1);
+ if (err < 0)
+ return err;
+
+ err = m5602_read_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
+ if (err < 0)
+ return err;
+ if (val)
+ data &= 0xfe;
+ else
+ data |= 0x01;
+ err = m5602_write_sensor(sd, S5K4AA_COLSTART_LO, &data, 1);
+ return err;
+}
+
+static int s5k4aa_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 gain %d", *val);
+ return 0;
+}
+
+static int s5k4aa_set_gain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[GAIN_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set gain to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+
+ data = val & 0xff;
+ err = m5602_write_sensor(sd, S5K4AA_GAIN, &data, 1);
+
+ return err;
+}
+
+static int s5k4aa_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[BRIGHTNESS_IDX];
+ PDEBUG(D_V4L2, "Read brightness %d", *val);
+ return 0;
+}
+
+static int s5k4aa_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[BRIGHTNESS_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set brightness to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+
+ data = val & 0xff;
+ return m5602_write_sensor(sd, S5K4AA_BRIGHTNESS, &data, 1);
+}
+
+static int s5k4aa_get_noise(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+
+ *val = sensor_settings[NOISE_SUPP_IDX];
+ PDEBUG(D_V4L2, "Read noise %d", *val);
+ return 0;
+}
+
+static int s5k4aa_set_noise(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ s32 *sensor_settings = sd->sensor_priv;
+ u8 data = S5K4AA_PAGE_MAP_2;
+ int err;
+
+ sensor_settings[NOISE_SUPP_IDX] = val;
+
+ PDEBUG(D_V4L2, "Set noise to %d", val);
+ err = m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &data, 1);
+ if (err < 0)
+ return err;
+
+ data = val & 0x01;
+ return m5602_write_sensor(sd, S5K4AA_NOISE_SUPP, &data, 1);
+}
+
+void s5k4aa_disconnect(struct sd *sd)
+{
+ sd->sensor = NULL;
+ kfree(sd->sensor_priv);
+}
+
+static void s5k4aa_dump_registers(struct sd *sd)
+{
+ int address;
+ u8 page, old_page;
+ m5602_read_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
+ for (page = 0; page < 16; page++) {
+ m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
+ pr_info("Dumping the s5k4aa register state for page 0x%x\n",
+ page);
+ for (address = 0; address <= 0xff; address++) {
+ u8 value = 0;
+ m5602_read_sensor(sd, address, &value, 1);
+ pr_info("register 0x%x contains 0x%x\n",
+ address, value);
+ }
+ }
+ pr_info("s5k4aa register state dump complete\n");
+
+ for (page = 0; page < 16; page++) {
+ m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &page, 1);
+ pr_info("Probing for which registers that are read/write for page 0x%x\n",
+ page);
+ for (address = 0; address <= 0xff; address++) {
+ u8 old_value, ctrl_value, test_value = 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)
+ 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);
+ }
+ }
+ pr_info("Read/write register probing complete\n");
+ m5602_write_sensor(sd, S5K4AA_PAGE_MAP, &old_page, 1);
+}