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path: root/linux/drivers/media/video/em28xx/em28xx-cards.c
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Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx-cards.c')
-rw-r--r--linux/drivers/media/video/em28xx/em28xx-cards.c160
1 files changed, 89 insertions, 71 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-cards.c b/linux/drivers/media/video/em28xx/em28xx-cards.c
index 2f4777f76..4b7526fa2 100644
--- a/linux/drivers/media/video/em28xx/em28xx-cards.c
+++ b/linux/drivers/media/video/em28xx/em28xx-cards.c
@@ -231,7 +231,7 @@ static struct em28xx_reg_seq silvercrest_reg_seq[] = {
struct em28xx_board em28xx_boards[] = {
[EM2750_BOARD_UNKNOWN] = {
.name = "EM2710/EM2750/EM2751 webcam grabber",
- .xclk = EM28XX_XCLK_FREQUENCY_48MHZ,
+ .xclk = EM28XX_XCLK_FREQUENCY_20MHZ,
.tuner_type = TUNER_ABSENT,
.is_webcam = 1,
.no_audio = 1,
@@ -1613,6 +1613,8 @@ struct usb_device_id em28xx_id_table[] = {
.driver_info = EM2750_BOARD_UNKNOWN },
{ USB_DEVICE(0xeb1a, 0x2800),
.driver_info = EM2800_BOARD_UNKNOWN },
+ { USB_DEVICE(0xeb1a, 0x2710),
+ .driver_info = EM2820_BOARD_UNKNOWN },
{ USB_DEVICE(0xeb1a, 0x2820),
.driver_info = EM2820_BOARD_UNKNOWN },
{ USB_DEVICE(0xeb1a, 0x2821),
@@ -1836,6 +1838,7 @@ static int em28xx_hint_sensor(struct em28xx *dev)
__be16 version_be;
u16 version;
+ /* Micron sensor detection */
dev->i2c_client.addr = 0xba >> 1;
cmd = 0;
i2c_master_send(&dev->i2c_client, &cmd, 1);
@@ -1844,16 +1847,27 @@ static int em28xx_hint_sensor(struct em28xx *dev)
return -EINVAL;
version = be16_to_cpu(version_be);
-
switch (version) {
case 0x8232: /* mt9v011 640x480 1.3 Mpix sensor */
case 0x8243: /* mt9v011 rev B 640x480 1.3 Mpix sensor */
dev->model = EM2820_BOARD_SILVERCREST_WEBCAM;
+ em28xx_set_model(dev);
+
sensor_name = "mt9v011";
dev->em28xx_sensor = EM28XX_MT9V011;
dev->sensor_xres = 640;
dev->sensor_yres = 480;
- dev->sensor_xtal = 6300000;
+ /*
+ * FIXME: mt9v011 uses I2S speed as xtal clk - at least with
+ * the Silvercrest cam I have here for testing - for higher
+ * resolutions, a high clock cause horizontal artifacts, so we
+ * need to use a lower xclk frequency.
+ * Yet, it would be possible to adjust xclk depending on the
+ * desired resolution, since this affects directly the
+ * frame rate.
+ */
+ dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ;
+ dev->sensor_xtal = 4300000;
/* probably means GRGB 16 bit bayer */
dev->vinmode = 0x0d;
@@ -1866,6 +1880,8 @@ static int em28xx_hint_sensor(struct em28xx *dev)
#endif
case 0x8431:
dev->model = EM2750_BOARD_UNKNOWN;
+ em28xx_set_model(dev);
+
sensor_name = "mt9m001";
dev->em28xx_sensor = EM28XX_MT9M001;
em28xx_initialize_mt9m001(dev);
@@ -1882,6 +1898,9 @@ static int em28xx_hint_sensor(struct em28xx *dev)
return -EINVAL;
}
+ /* Setup webcam defaults */
+ em28xx_pre_card_setup(dev);
+
em28xx_errdev("Sensor is %s, using model %s entry.\n",
sensor_name, em28xx_boards[dev->model].name);
@@ -1893,60 +1912,6 @@ static int em28xx_hint_sensor(struct em28xx *dev)
*/
void em28xx_pre_card_setup(struct em28xx *dev)
{
- int rc;
-
- em28xx_set_model(dev);
-
- em28xx_info("Identified as %s (card=%d)\n",
- dev->board.name, dev->model);
-
- /* Set the default GPO/GPIO for legacy devices */
- dev->reg_gpo_num = EM2880_R04_GPO;
- dev->reg_gpio_num = EM28XX_R08_GPIO;
-
- dev->wait_after_write = 5;
-
- /* Based on the Chip ID, set the device configuration */
- rc = em28xx_read_reg(dev, EM28XX_R0A_CHIPID);
- if (rc > 0) {
- dev->chip_id = rc;
-
- switch (dev->chip_id) {
- case CHIP_ID_EM2750:
- em28xx_info("chip ID is em2750\n");
- break;
- case CHIP_ID_EM2820:
- em28xx_info("chip ID is em2710 or em2820\n");
- break;
- case CHIP_ID_EM2840:
- em28xx_info("chip ID is em2840\n");
- break;
- case CHIP_ID_EM2860:
- em28xx_info("chip ID is em2860\n");
- break;
- case CHIP_ID_EM2870:
- em28xx_info("chip ID is em2870\n");
- dev->wait_after_write = 0;
- break;
- case CHIP_ID_EM2874:
- em28xx_info("chip ID is em2874\n");
- dev->reg_gpio_num = EM2874_R80_GPIO;
- dev->wait_after_write = 0;
- break;
- case CHIP_ID_EM2883:
- em28xx_info("chip ID is em2882/em2883\n");
- dev->wait_after_write = 0;
- break;
- default:
- em28xx_info("em28xx chip ID = %d\n", dev->chip_id);
- }
- }
-
- /* Prepopulate cached GPO register content */
- rc = em28xx_read_reg(dev, dev->reg_gpo_num);
- if (rc >= 0)
- dev->reg_gpo = rc;
-
/* Set the initial XCLK and I2C clock values based on the board
definition */
em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk & 0x7f);
@@ -2329,7 +2294,20 @@ void em28xx_register_i2c_ir(struct em28xx *dev)
void em28xx_card_setup(struct em28xx *dev)
{
- em28xx_set_model(dev);
+ /*
+ * If the device can be a webcam, seek for a sensor.
+ * If sensor is not found, then it isn't a webcam.
+ */
+ if (dev->board.is_webcam) {
+ if (em28xx_hint_sensor(dev) < 0)
+ dev->board.is_webcam = 0;
+ else
+ dev->progressive = 1;
+ } else
+ em28xx_set_model(dev);
+
+ em28xx_info("Identified as %s (card=%d)\n",
+ dev->board.name, dev->model);
dev->tuner_type = em28xx_boards[dev->model].tuner_type;
if (em28xx_boards[dev->model].tuner_addr)
@@ -2403,10 +2381,6 @@ void em28xx_card_setup(struct em28xx *dev)
em28xx_gpio_set(dev, dev->board.tuner_gpio);
em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
break;
- case EM2820_BOARD_SILVERCREST_WEBCAM:
- /* FIXME: need to document the registers bellow */
- em28xx_write_reg(dev, 0x0d, 0x42);
- em28xx_write_reg(dev, 0x13, 0x08);
}
if (dev->board.has_snapshot_button)
@@ -2563,7 +2537,7 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
int minor)
{
struct em28xx *dev = *devhandle;
- int retval = -ENOMEM;
+ int retval;
int errCode;
dev->udev = udev;
@@ -2580,6 +2554,58 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->em28xx_read_reg_req = em28xx_read_reg_req;
dev->board.is_em2800 = em28xx_boards[dev->model].is_em2800;
+ em28xx_set_model(dev);
+
+ /* Set the default GPO/GPIO for legacy devices */
+ dev->reg_gpo_num = EM2880_R04_GPO;
+ dev->reg_gpio_num = EM28XX_R08_GPIO;
+
+ dev->wait_after_write = 5;
+
+ /* Based on the Chip ID, set the device configuration */
+ retval = em28xx_read_reg(dev, EM28XX_R0A_CHIPID);
+ if (retval > 0) {
+ dev->chip_id = retval;
+
+ switch (dev->chip_id) {
+ case CHIP_ID_EM2710:
+ em28xx_info("chip ID is em2710\n");
+ break;
+ case CHIP_ID_EM2750:
+ em28xx_info("chip ID is em2750\n");
+ break;
+ case CHIP_ID_EM2820:
+ em28xx_info("chip ID is em2820 (or em2710)\n");
+ break;
+ case CHIP_ID_EM2840:
+ em28xx_info("chip ID is em2840\n");
+ break;
+ case CHIP_ID_EM2860:
+ em28xx_info("chip ID is em2860\n");
+ break;
+ case CHIP_ID_EM2870:
+ em28xx_info("chip ID is em2870\n");
+ dev->wait_after_write = 0;
+ break;
+ case CHIP_ID_EM2874:
+ em28xx_info("chip ID is em2874\n");
+ dev->reg_gpio_num = EM2874_R80_GPIO;
+ dev->wait_after_write = 0;
+ break;
+ case CHIP_ID_EM2883:
+ em28xx_info("chip ID is em2882/em2883\n");
+ dev->wait_after_write = 0;
+ break;
+ default:
+ em28xx_info("em28xx chip ID = %d\n", dev->chip_id);
+ }
+ }
+
+ /* Prepopulate cached GPO register content */
+ retval = em28xx_read_reg(dev, dev->reg_gpo_num);
+ if (retval >= 0)
+ dev->reg_gpo = retval;
+
em28xx_pre_card_setup(dev);
if (!dev->board.is_em2800) {
@@ -2614,14 +2640,6 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->vinmode = 0x10;
dev->vinctl = 0x11;
- /*
- * If the device can be a webcam, seek for a sensor.
- * If sensor is not found, then it isn't a webcam.
- */
- if (dev->board.is_webcam)
- if (em28xx_hint_sensor(dev) < 0)
- dev->board.is_webcam = 0;
-
/* Do board specific init and eeprom reading */
em28xx_card_setup(dev);
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-08 17:34:30 +0000