diff options
Diffstat (limited to 'drivers/media/video/gspca/m5602/m5602_s5k83a.c')
| -rw-r--r-- | drivers/media/video/gspca/m5602/m5602_s5k83a.c | 473 |
1 files changed, 307 insertions, 166 deletions
diff --git a/drivers/media/video/gspca/m5602/m5602_s5k83a.c b/drivers/media/video/gspca/m5602/m5602_s5k83a.c index 42c86aa4dc8d..7127321ace8c 100644 --- a/drivers/media/video/gspca/m5602/m5602_s5k83a.c +++ b/drivers/media/video/gspca/m5602/m5602_s5k83a.c @@ -16,8 +16,20 @@ * */ +#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, @@ -32,68 +44,77 @@ static struct v4l2_pix_format s5k83a_modes[] = { } }; -const static struct ctrl s5k83a_ctrls[] = { +static const struct ctrl s5k83a_ctrls[] = { +#define GAIN_IDX 0 { { - .id = V4L2_CID_BRIGHTNESS, + .id = V4L2_CID_GAIN, .type = V4L2_CTRL_TYPE_INTEGER, - .name = "brightness", + .name = "gain", .minimum = 0x00, .maximum = 0xff, .step = 0x01, - .default_value = S5K83A_DEFAULT_BRIGHTNESS, + .default_value = S5K83A_DEFAULT_GAIN, .flags = V4L2_CTRL_FLAG_SLIDER }, - .set = s5k83a_set_brightness, - .get = s5k83a_get_brightness + .set = s5k83a_set_gain, + .get = s5k83a_get_gain - }, { + }, +#define BRIGHTNESS_IDX 1 + { { - .id = V4L2_CID_WHITENESS, + .id = V4L2_CID_BRIGHTNESS, .type = V4L2_CTRL_TYPE_INTEGER, - .name = "whiteness", + .name = "brightness", .minimum = 0x00, .maximum = 0xff, .step = 0x01, - .default_value = S5K83A_DEFAULT_WHITENESS, + .default_value = S5K83A_DEFAULT_BRIGHTNESS, .flags = V4L2_CTRL_FLAG_SLIDER }, - .set = s5k83a_set_whiteness, - .get = s5k83a_get_whiteness, - }, { + .set = s5k83a_set_brightness, + .get = s5k83a_get_brightness, + }, +#define EXPOSURE_IDX 2 + { { - .id = V4L2_CID_GAIN, + .id = V4L2_CID_EXPOSURE, .type = V4L2_CTRL_TYPE_INTEGER, - .name = "gain", + .name = "exposure", .minimum = 0x00, - .maximum = S5K83A_MAXIMUM_GAIN, + .maximum = S5K83A_MAXIMUM_EXPOSURE, .step = 0x01, - .default_value = S5K83A_DEFAULT_GAIN, + .default_value = S5K83A_DEFAULT_EXPOSURE, .flags = V4L2_CTRL_FLAG_SLIDER }, - .set = s5k83a_set_gain, - .get = s5k83a_get_gain - }, { + .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 + .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 + .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 @@ -101,9 +122,14 @@ const static struct ctrl s5k83a_ctrls[] = { }; 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; @@ -145,16 +171,36 @@ int s5k83a_probe(struct sd *sd) info("Detected a s5k83a sensor"); 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) + 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}; @@ -187,87 +233,138 @@ int s5k83a_init(struct sd *sd) if (dump_sensor) s5k83a_dump_registers(sd); - return (err < 0) ? err : 0; -} + err = s5k83a_set_gain(&sd->gspca_dev, sensor_settings[GAIN_IDX]); + if (err < 0) + return err; -int s5k83a_start(struct sd *sd) -{ - return s5k83a_set_led_indication(sd, 1); -} + err = s5k83a_set_brightness(&sd->gspca_dev, + sensor_settings[BRIGHTNESS_IDX]); + if (err < 0) + return err; -int s5k83a_stop(struct sd *sd) -{ - return s5k83a_set_led_indication(sd, 0); + 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; } -int s5k83a_power_down(struct sd *sd) +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, ®); + if (previous_rotation != reg) { + previous_rotation = reg; + info("Camera was flipped"); + + 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; } -static void s5k83a_dump_registers(struct sd *sd) +int s5k83a_start(struct sd *sd) { - int address; - u8 page, old_page; - m5602_read_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1); + int i, err = 0; + struct s5k83a_priv *sens_priv = sd->sensor_priv; - for (page = 0; page < 16; page++) { - m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1); - info("Dumping the s5k83a register state for page 0x%x", page); - for (address = 0; address <= 0xff; address++) { - u8 val = 0; - m5602_read_sensor(sd, address, &val, 1); - info("register 0x%x contains 0x%x", - address, val); - } + /* 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]); } - info("s5k83a register state dump complete"); + if (err < 0) + return err; - for (page = 0; page < 16; page++) { - m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1); - info("Probing for which registers that are read/write " - "for page 0x%x", page); - for (address = 0; address <= 0xff; address++) { - u8 old_val, ctrl_val, test_val = 0xff; + return s5k83a_set_led_indication(sd, 1); +} - m5602_read_sensor(sd, address, &old_val, 1); - m5602_write_sensor(sd, address, &test_val, 1); - m5602_read_sensor(sd, address, &ctrl_val, 1); +int s5k83a_stop(struct sd *sd) +{ + struct s5k83a_priv *sens_priv = sd->sensor_priv; - if (ctrl_val == test_val) - info("register 0x%x is writeable", address); - else - info("register 0x%x is read only", address); + if (sens_priv->rotation_thread) + kthread_stop(sens_priv->rotation_thread); - /* Restore original val */ - m5602_write_sensor(sd, address, &old_val, 1); - } - } - info("Read/write register probing complete"); - m5602_write_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1); + return s5k83a_set_led_indication(sd, 0); } -int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val) +void s5k83a_disconnect(struct sd *sd) { - int err; - u8 data[2]; - struct sd *sd = (struct sd *) gspca_dev; + struct s5k83a_priv *sens_priv = sd->sensor_priv; - err = m5602_read_sensor(sd, S5K83A_BRIGHTNESS, data, 2); - if (err < 0) - return err; + s5k83a_stop(sd); + + sd->sensor = NULL; + kfree(sens_priv->settings); + kfree(sens_priv); +} - data[1] = data[1] << 1; - *val = data[1]; +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; - return err; + *val = sens_priv->settings[GAIN_IDX]; + return 0; } -int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val) +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; @@ -283,89 +380,69 @@ int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val) /* FIXME: This is not sane, we need to figure out the composition of these registers */ - data[0] = val >> 3; /* brightness, high 5 bits */ - data[1] = val >> 1; /* brightness, high 7 bits */ - err = m5602_write_sensor(sd, S5K83A_BRIGHTNESS, data, 2); + 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; } -int s5k83a_get_whiteness(struct gspca_dev *gspca_dev, __s32 *val) +static int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val) { - int err; - u8 data; struct sd *sd = (struct sd *) gspca_dev; + struct s5k83a_priv *sens_priv = sd->sensor_priv; - err = m5602_read_sensor(sd, S5K83A_WHITENESS, &data, 1); - if (err < 0) - return err; - - *val = data; - - return err; + *val = sens_priv->settings[BRIGHTNESS_IDX]; + return 0; } -int s5k83a_set_whiteness(struct gspca_dev *gspca_dev, __s32 val) +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_WHITENESS, data, 1); - + err = m5602_write_sensor(sd, S5K83A_BRIGHTNESS, data, 1); return err; } -int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val) +static int s5k83a_get_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; - err = m5602_read_sensor(sd, S5K83A_GAIN, data, 2); - if (err < 0) - return err; - - data[1] = data[1] & 0x3f; - if (data[1] > S5K83A_MAXIMUM_GAIN) - data[1] = S5K83A_MAXIMUM_GAIN; - - *val = data[1]; - - return err; + *val = sens_priv->settings[EXPOSURE_IDX]; + return 0; } -int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val) +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_GAIN, data, 2); + err = m5602_write_sensor(sd, S5K83A_EXPOSURE, data, 2); return err; } -int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val) +static int s5k83a_get_vflip(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; - data[0] = 0x05; - err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); - if (err < 0) - return err; - - err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1); - *val = (data[0] | 0x40) ? 1 : 0; - - return err; + *val = sens_priv->settings[VFLIP_IDX]; + return 0; } -int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val) +static int s5k83a_set_flip_real(struct gspca_dev *gspca_dev, + __s32 vflip, __s32 hflip) { int err; u8 data[1]; @@ -376,69 +453,83 @@ int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val) if (err < 0) return err; - err = m5602_read_sensor(sd, S5K83A_FLIP, 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]; - /* set or zero six bit, seven is hflip */ - data[0] = (val) ? (data[0] & 0x80) | 0x40 | S5K83A_FLIP_MASK - : (data[0] & 0x80) | S5K83A_FLIP_MASK; err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1); if (err < 0) return err; - data[0] = (val) ? 0x0b : 0x0a; + 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; } -int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val) +static int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val) { int err; - u8 data[1]; + u8 reg; + __s32 hflip; struct sd *sd = (struct sd *) gspca_dev; + struct s5k83a_priv *sens_priv = sd->sensor_priv; - data[0] = 0x05; - err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); + sens_priv->settings[VFLIP_IDX] = val; + + s5k83a_get_hflip(gspca_dev, &hflip); + + err = s5k83a_get_rotation(sd, ®); if (err < 0) return err; + if (reg) { + val = !val; + hflip = !hflip; + } - err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1); - *val = (data[0] | 0x80) ? 1 : 0; - + err = s5k83a_set_flip_real(gspca_dev, val, hflip); return err; } -int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val) +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 data[1]; + u8 reg; + __s32 vflip; struct sd *sd = (struct sd *) gspca_dev; + struct s5k83a_priv *sens_priv = sd->sensor_priv; - data[0] = 0x05; - err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1); - if (err < 0) - return err; + sens_priv->settings[HFLIP_IDX] = val; - err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1); - if (err < 0) - return err; + s5k83a_get_vflip(gspca_dev, &vflip); - /* set or zero seven bit, six is vflip */ - data[0] = (val) ? (data[0] & 0x40) | 0x80 | S5K83A_FLIP_MASK - : (data[0] & 0x40) | S5K83A_FLIP_MASK; - err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1); + err = s5k83a_get_rotation(sd, ®); if (err < 0) return err; + if (reg) { + val = !val; + vflip = !vflip; + } - data[0] = (val) ? 0x0a : 0x0b; - err = m5602_write_sensor(sd, S5K83A_HFLIP_TUNE, data, 1); - + err = s5k83a_set_flip_real(gspca_dev, vflip, val); return err; } -int s5k83a_set_led_indication(struct sd *sd, u8 val) +static int s5k83a_set_led_indication(struct sd *sd, u8 val) { int err = 0; u8 data[1]; @@ -454,5 +545,55 @@ int s5k83a_set_led_indication(struct sd *sd, u8 val) err = m5602_write_bridge(sd, M5602_XB_GPIO_DAT, data[0]); - return (err < 0) ? err : 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); + info("Dumping the s5k83a register state for page 0x%x", page); + for (address = 0; address <= 0xff; address++) { + u8 val = 0; + m5602_read_sensor(sd, address, &val, 1); + info("register 0x%x contains 0x%x", + address, val); + } + } + info("s5k83a register state dump complete"); + + for (page = 0; page < 16; page++) { + m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1); + info("Probing for which registers that are read/write " + "for page 0x%x", 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) + info("register 0x%x is writeable", address); + else + info("register 0x%x is read only", address); + + /* Restore original val */ + m5602_write_sensor(sd, address, &old_val, 1); + } + } + info("Read/write register probing complete"); + m5602_write_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1); } |