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Diffstat (limited to 'drivers/media/usb/gspca/m5602/m5602_s5k83a.c')
-rw-r--r--drivers/media/usb/gspca/m5602/m5602_s5k83a.c605
1 files changed, 605 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/m5602/m5602_s5k83a.c b/drivers/media/usb/gspca/m5602/m5602_s5k83a.c
new file mode 100644
index 000000000000..1de743a02b02
--- /dev/null
+++ b/drivers/media/usb/gspca/m5602/m5602_s5k83a.c
@@ -0,0 +1,605 @@
+/*
+ * Driver for the s5k83a 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 <linux/kthread.h>
+#include "m5602_s5k83a.h"
+
+static int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k83a_set_exposure(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k83a_get_exposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val);
+static int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val);
+static int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val);
+
+static struct v4l2_pix_format s5k83a_modes[] = {
+ {
+ 640,
+ 480,
+ V4L2_PIX_FMT_SBGGR8,
+ V4L2_FIELD_NONE,
+ .sizeimage =
+ 640 * 480,
+ .bytesperline = 640,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0
+ }
+};
+
+static const struct ctrl s5k83a_ctrls[] = {
+#define GAIN_IDX 0
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "gain",
+ .minimum = 0x00,
+ .maximum = 0xff,
+ .step = 0x01,
+ .default_value = S5K83A_DEFAULT_GAIN,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = s5k83a_set_gain,
+ .get = s5k83a_get_gain
+
+ },
+#define BRIGHTNESS_IDX 1
+ {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "brightness",
+ .minimum = 0x00,
+ .maximum = 0xff,
+ .step = 0x01,
+ .default_value = S5K83A_DEFAULT_BRIGHTNESS,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = s5k83a_set_brightness,
+ .get = s5k83a_get_brightness,
+ },
+#define EXPOSURE_IDX 2
+ {
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "exposure",
+ .minimum = 0x00,
+ .maximum = S5K83A_MAXIMUM_EXPOSURE,
+ .step = 0x01,
+ .default_value = S5K83A_DEFAULT_EXPOSURE,
+ .flags = V4L2_CTRL_FLAG_SLIDER
+ },
+ .set = s5k83a_set_exposure,
+ .get = s5k83a_get_exposure
+ },
+#define HFLIP_IDX 3
+ {
+ {
+ .id = V4L2_CID_HFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "horizontal flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0
+ },
+ .set = s5k83a_set_hflip,
+ .get = s5k83a_get_hflip
+ },
+#define VFLIP_IDX 4
+ {
+ {
+ .id = V4L2_CID_VFLIP,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "vertical flip",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0
+ },
+ .set = s5k83a_set_vflip,
+ .get = s5k83a_get_vflip
+ }
+};
+
+static void s5k83a_dump_registers(struct sd *sd);
+static int s5k83a_get_rotation(struct sd *sd, u8 *reg_data);
+static int s5k83a_set_led_indication(struct sd *sd, u8 val);
+static int s5k83a_set_flip_real(struct gspca_dev *gspca_dev,
+ __s32 vflip, __s32 hflip);
+
+int s5k83a_probe(struct sd *sd)
+{
+ struct s5k83a_priv *sens_priv;
+ u8 prod_id = 0, ver_id = 0;
+ int i, err = 0;
+
+ if (force_sensor) {
+ if (force_sensor == S5K83A_SENSOR) {
+ pr_info("Forcing a %s sensor\n", s5k83a.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 s5k83a sensor");
+
+ /* Preinit the sensor */
+ for (i = 0; i < ARRAY_SIZE(preinit_s5k83a) && !err; i++) {
+ u8 data[2] = {preinit_s5k83a[i][2], preinit_s5k83a[i][3]};
+ if (preinit_s5k83a[i][0] == SENSOR)
+ err = m5602_write_sensor(sd, preinit_s5k83a[i][1],
+ data, 2);
+ else
+ err = m5602_write_bridge(sd, preinit_s5k83a[i][1],
+ data[0]);
+ }
+
+ /* We don't know what register (if any) that contain the product id
+ * Just pick the first addresses that seem to produce the same results
+ * on multiple machines */
+ if (m5602_read_sensor(sd, 0x00, &prod_id, 1))
+ return -ENODEV;
+
+ if (m5602_read_sensor(sd, 0x01, &ver_id, 1))
+ return -ENODEV;
+
+ if ((prod_id == 0xff) || (ver_id == 0xff))
+ return -ENODEV;
+ else
+ pr_info("Detected a s5k83a sensor\n");
+
+sensor_found:
+ sens_priv = kmalloc(
+ sizeof(struct s5k83a_priv), GFP_KERNEL);
+ if (!sens_priv)
+ return -ENOMEM;
+
+ sens_priv->settings =
+ kmalloc(sizeof(s32)*ARRAY_SIZE(s5k83a_ctrls), GFP_KERNEL);
+ if (!sens_priv->settings) {
+ kfree(sens_priv);
+ return -ENOMEM;
+ }
+
+ sd->gspca_dev.cam.cam_mode = s5k83a_modes;
+ sd->gspca_dev.cam.nmodes = ARRAY_SIZE(s5k83a_modes);
+ sd->desc->ctrls = s5k83a_ctrls;
+ sd->desc->nctrls = ARRAY_SIZE(s5k83a_ctrls);
+
+ /* null the pointer! thread is't running now */
+ sens_priv->rotation_thread = NULL;
+
+ for (i = 0; i < ARRAY_SIZE(s5k83a_ctrls); i++)
+ sens_priv->settings[i] = s5k83a_ctrls[i].qctrl.default_value;
+
+ sd->sensor_priv = sens_priv;
+ return 0;
+}
+
+int s5k83a_init(struct sd *sd)
+{
+ int i, err = 0;
+ s32 *sensor_settings =
+ ((struct s5k83a_priv *) sd->sensor_priv)->settings;
+
+ for (i = 0; i < ARRAY_SIZE(init_s5k83a) && !err; i++) {
+ u8 data[2] = {0x00, 0x00};
+
+ switch (init_s5k83a[i][0]) {
+ case BRIDGE:
+ err = m5602_write_bridge(sd,
+ init_s5k83a[i][1],
+ init_s5k83a[i][2]);
+ break;
+
+ case SENSOR:
+ data[0] = init_s5k83a[i][2];
+ err = m5602_write_sensor(sd,
+ init_s5k83a[i][1], data, 1);
+ break;
+
+ case SENSOR_LONG:
+ data[0] = init_s5k83a[i][2];
+ data[1] = init_s5k83a[i][3];
+ err = m5602_write_sensor(sd,
+ init_s5k83a[i][1], data, 2);
+ break;
+ default:
+ pr_info("Invalid stream command, exiting init\n");
+ return -EINVAL;
+ }
+ }
+
+ if (dump_sensor)
+ s5k83a_dump_registers(sd);
+
+ err = s5k83a_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k83a_set_brightness(&sd->gspca_dev,
+ sensor_settings[BRIGHTNESS_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k83a_set_exposure(&sd->gspca_dev,
+ sensor_settings[EXPOSURE_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k83a_set_hflip(&sd->gspca_dev, sensor_settings[HFLIP_IDX]);
+ if (err < 0)
+ return err;
+
+ err = s5k83a_set_vflip(&sd->gspca_dev, sensor_settings[VFLIP_IDX]);
+
+ return err;
+}
+
+static int rotation_thread_function(void *data)
+{
+ struct sd *sd = (struct sd *) data;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+ u8 reg, previous_rotation = 0;
+ __s32 vflip, hflip;
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (!schedule_timeout(100)) {
+ if (mutex_lock_interruptible(&sd->gspca_dev.usb_lock))
+ break;
+
+ s5k83a_get_rotation(sd, &reg);
+ if (previous_rotation != reg) {
+ previous_rotation = reg;
+ pr_info("Camera was flipped\n");
+
+ s5k83a_get_vflip((struct gspca_dev *) sd, &vflip);
+ s5k83a_get_hflip((struct gspca_dev *) sd, &hflip);
+
+ if (reg) {
+ vflip = !vflip;
+ hflip = !hflip;
+ }
+ s5k83a_set_flip_real((struct gspca_dev *) sd,
+ vflip, hflip);
+ }
+
+ mutex_unlock(&sd->gspca_dev.usb_lock);
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+
+ /* return to "front" flip */
+ if (previous_rotation) {
+ s5k83a_get_vflip((struct gspca_dev *) sd, &vflip);
+ s5k83a_get_hflip((struct gspca_dev *) sd, &hflip);
+ s5k83a_set_flip_real((struct gspca_dev *) sd, vflip, hflip);
+ }
+
+ sens_priv->rotation_thread = NULL;
+ return 0;
+}
+
+int s5k83a_start(struct sd *sd)
+{
+ int i, err = 0;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ /* Create another thread, polling the GPIO ports of the camera to check
+ if it got rotated. This is how the windows driver does it so we have
+ to assume that there is no better way of accomplishing this */
+ sens_priv->rotation_thread = kthread_create(rotation_thread_function,
+ sd, "rotation thread");
+ wake_up_process(sens_priv->rotation_thread);
+
+ /* Preinit the sensor */
+ for (i = 0; i < ARRAY_SIZE(start_s5k83a) && !err; i++) {
+ u8 data[2] = {start_s5k83a[i][2], start_s5k83a[i][3]};
+ if (start_s5k83a[i][0] == SENSOR)
+ err = m5602_write_sensor(sd, start_s5k83a[i][1],
+ data, 2);
+ else
+ err = m5602_write_bridge(sd, start_s5k83a[i][1],
+ data[0]);
+ }
+ if (err < 0)
+ return err;
+
+ return s5k83a_set_led_indication(sd, 1);
+}
+
+int s5k83a_stop(struct sd *sd)
+{
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ if (sens_priv->rotation_thread)
+ kthread_stop(sens_priv->rotation_thread);
+
+ return s5k83a_set_led_indication(sd, 0);
+}
+
+void s5k83a_disconnect(struct sd *sd)
+{
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ s5k83a_stop(sd);
+
+ sd->sensor = NULL;
+ kfree(sens_priv->settings);
+ kfree(sens_priv);
+}
+
+static int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ *val = sens_priv->settings[GAIN_IDX];
+ return 0;
+}
+
+static int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 data[2];
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ sens_priv->settings[GAIN_IDX] = val;
+
+ data[0] = 0x00;
+ data[1] = 0x20;
+ err = m5602_write_sensor(sd, 0x14, data, 2);
+ if (err < 0)
+ return err;
+
+ data[0] = 0x01;
+ data[1] = 0x00;
+ err = m5602_write_sensor(sd, 0x0d, data, 2);
+ if (err < 0)
+ return err;
+
+ /* FIXME: This is not sane, we need to figure out the composition
+ of these registers */
+ data[0] = val >> 3; /* gain, high 5 bits */
+ data[1] = val >> 1; /* gain, high 7 bits */
+ err = m5602_write_sensor(sd, S5K83A_GAIN, data, 2);
+
+ return err;
+}
+
+static int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ *val = sens_priv->settings[BRIGHTNESS_IDX];
+ return 0;
+}
+
+static int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 data[1];
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ sens_priv->settings[BRIGHTNESS_IDX] = val;
+ data[0] = val;
+ err = m5602_write_sensor(sd, S5K83A_BRIGHTNESS, data, 1);
+ return err;
+}
+
+static int s5k83a_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ *val = sens_priv->settings[EXPOSURE_IDX];
+ return 0;
+}
+
+static int s5k83a_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 data[2];
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ sens_priv->settings[EXPOSURE_IDX] = val;
+ data[0] = 0;
+ data[1] = val;
+ err = m5602_write_sensor(sd, S5K83A_EXPOSURE, data, 2);
+ return err;
+}
+
+static int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ *val = sens_priv->settings[VFLIP_IDX];
+ return 0;
+}
+
+static int s5k83a_set_flip_real(struct gspca_dev *gspca_dev,
+ __s32 vflip, __s32 hflip)
+{
+ int err;
+ u8 data[1];
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ data[0] = 0x05;
+ err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
+ if (err < 0)
+ return err;
+
+ /* six bit is vflip, seven is hflip */
+ data[0] = S5K83A_FLIP_MASK;
+ data[0] = (vflip) ? data[0] | 0x40 : data[0];
+ data[0] = (hflip) ? data[0] | 0x80 : data[0];
+
+ err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1);
+ if (err < 0)
+ return err;
+
+ data[0] = (vflip) ? 0x0b : 0x0a;
+ err = m5602_write_sensor(sd, S5K83A_VFLIP_TUNE, data, 1);
+ if (err < 0)
+ return err;
+
+ data[0] = (hflip) ? 0x0a : 0x0b;
+ err = m5602_write_sensor(sd, S5K83A_HFLIP_TUNE, data, 1);
+ return err;
+}
+
+static int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 reg;
+ __s32 hflip;
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ sens_priv->settings[VFLIP_IDX] = val;
+
+ s5k83a_get_hflip(gspca_dev, &hflip);
+
+ err = s5k83a_get_rotation(sd, &reg);
+ if (err < 0)
+ return err;
+ if (reg) {
+ val = !val;
+ hflip = !hflip;
+ }
+
+ err = s5k83a_set_flip_real(gspca_dev, val, hflip);
+ return err;
+}
+
+static int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ *val = sens_priv->settings[HFLIP_IDX];
+ return 0;
+}
+
+static int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
+{
+ int err;
+ u8 reg;
+ __s32 vflip;
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct s5k83a_priv *sens_priv = sd->sensor_priv;
+
+ sens_priv->settings[HFLIP_IDX] = val;
+
+ s5k83a_get_vflip(gspca_dev, &vflip);
+
+ err = s5k83a_get_rotation(sd, &reg);
+ if (err < 0)
+ return err;
+ if (reg) {
+ val = !val;
+ vflip = !vflip;
+ }
+
+ err = s5k83a_set_flip_real(gspca_dev, vflip, val);
+ return err;
+}
+
+static int s5k83a_set_led_indication(struct sd *sd, u8 val)
+{
+ int err = 0;
+ u8 data[1];
+
+ err = m5602_read_bridge(sd, M5602_XB_GPIO_DAT, data);
+ if (err < 0)
+ return err;
+
+ if (val)
+ data[0] = data[0] | S5K83A_GPIO_LED_MASK;
+ else
+ data[0] = data[0] & ~S5K83A_GPIO_LED_MASK;
+
+ err = m5602_write_bridge(sd, M5602_XB_GPIO_DAT, data[0]);
+
+ return err;
+}
+
+/* Get camera rotation on Acer notebooks */
+static int s5k83a_get_rotation(struct sd *sd, u8 *reg_data)
+{
+ int err = m5602_read_bridge(sd, M5602_XB_GPIO_DAT, reg_data);
+ *reg_data = (*reg_data & S5K83A_GPIO_ROTATION_MASK) ? 0 : 1;
+ return err;
+}
+
+static void s5k83a_dump_registers(struct sd *sd)
+{
+ int address;
+ u8 page, old_page;
+ m5602_read_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
+
+ for (page = 0; page < 16; page++) {
+ m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1);
+ pr_info("Dumping the s5k83a register state for page 0x%x\n",
+ page);
+ for (address = 0; address <= 0xff; address++) {
+ u8 val = 0;
+ m5602_read_sensor(sd, address, &val, 1);
+ pr_info("register 0x%x contains 0x%x\n", address, val);
+ }
+ }
+ pr_info("s5k83a register state dump complete\n");
+
+ for (page = 0; page < 16; page++) {
+ m5602_write_sensor(sd, S5K83A_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_val, ctrl_val, test_val = 0xff;
+
+ m5602_read_sensor(sd, address, &old_val, 1);
+ m5602_write_sensor(sd, address, &test_val, 1);
+ m5602_read_sensor(sd, address, &ctrl_val, 1);
+
+ if (ctrl_val == test_val)
+ pr_info("register 0x%x is writeable\n",
+ address);
+ else
+ pr_info("register 0x%x is read only\n",
+ address);
+
+ /* Restore original val */
+ m5602_write_sensor(sd, address, &old_val, 1);
+ }
+ }
+ pr_info("Read/write register probing complete\n");
+ m5602_write_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
+}
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