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path: root/drivers/media/usb/em28xx/em28xx-cards.c
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Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-cards.c')
-rw-r--r--drivers/media/usb/em28xx/em28xx-cards.c270
1 files changed, 202 insertions, 68 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c
index 619bffbab3bc..54a03b20de6e 100644
--- a/drivers/media/usb/em28xx/em28xx-cards.c
+++ b/drivers/media/usb/em28xx/em28xx-cards.c
@@ -6,6 +6,7 @@
Markus Rechberger <mrechberger@gmail.com>
Mauro Carvalho Chehab <mchehab@infradead.org>
Sascha Sommer <saschasommer@freenet.de>
+ Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
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
@@ -56,10 +57,16 @@ module_param(disable_usb_speed_check, int, 0444);
MODULE_PARM_DESC(disable_usb_speed_check,
"override min bandwidth requirement of 480M bps");
-static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET };
+static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U };
module_param_array(card, int, NULL, 0444);
MODULE_PARM_DESC(card, "card type");
+static int usb_xfer_mode = -1;
+module_param(usb_xfer_mode, int, 0444);
+MODULE_PARM_DESC(usb_xfer_mode,
+ "USB transfer mode for frame data (-1 = auto, 0 = prefer isoc, 1 = prefer bulk)");
+
+
/* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS - 1 */
static unsigned long em28xx_devused;
@@ -486,7 +493,7 @@ struct em28xx_board em28xx_boards[] = {
.input = { {
.type = EM28XX_VMUX_TELEVISION,
.vmux = SAA7115_COMPOSITE2,
- .amux = EM28XX_AMUX_LINE_IN,
+ .amux = EM28XX_AMUX_VIDEO,
}, {
.type = EM28XX_VMUX_COMPOSITE1,
.vmux = SAA7115_COMPOSITE0,
@@ -2073,6 +2080,8 @@ struct usb_device_id em28xx_id_table[] = {
.driver_info = EM2884_BOARD_TERRATEC_H5 },
{ USB_DEVICE(0x0ccd, 0x10ad), /* H5 Rev. 2 */
.driver_info = EM2884_BOARD_TERRATEC_H5 },
+ { USB_DEVICE(0x0ccd, 0x10b6), /* H5 Rev. 3 */
+ .driver_info = EM2884_BOARD_TERRATEC_H5 },
{ USB_DEVICE(0x0ccd, 0x0084),
.driver_info = EM2860_BOARD_TERRATEC_AV350 },
{ USB_DEVICE(0x0ccd, 0x0096),
@@ -2905,7 +2914,7 @@ static void request_module_async(struct work_struct *work)
if (dev->board.has_dvb)
request_module("em28xx-dvb");
- if (dev->board.ir_codes && !disable_ir)
+ if ((dev->board.ir_codes || dev->board.has_ir_i2c) && !disable_ir)
request_module("em28xx-rc");
#endif /* CONFIG_MODULES */
}
@@ -2934,6 +2943,8 @@ void em28xx_release_resources(struct em28xx *dev)
em28xx_i2c_unregister(dev);
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+
v4l2_device_unregister(&dev->v4l2_dev);
usb_put_dev(dev->udev);
@@ -2950,9 +2961,14 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
struct usb_interface *interface,
int minor)
{
+ struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler;
int retval;
+ static const char *default_chip_name = "em28xx";
+ const char *chip_name = default_chip_name;
dev->udev = udev;
+ mutex_init(&dev->vb_queue_lock);
+ mutex_init(&dev->vb_vbi_queue_lock);
mutex_init(&dev->ctrl_urb_lock);
spin_lock_init(&dev->slock);
@@ -2978,51 +2994,62 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
switch (dev->chip_id) {
case CHIP_ID_EM2800:
- em28xx_info("chip ID is em2800\n");
+ chip_name = "em2800";
break;
case CHIP_ID_EM2710:
- em28xx_info("chip ID is em2710\n");
+ chip_name = "em2710";
break;
case CHIP_ID_EM2750:
- em28xx_info("chip ID is em2750\n");
+ chip_name = "em2750";
break;
case CHIP_ID_EM2820:
- em28xx_info("chip ID is em2820 (or em2710)\n");
+ chip_name = "em2710/2820";
break;
case CHIP_ID_EM2840:
- em28xx_info("chip ID is em2840\n");
+ chip_name = "em2840";
break;
case CHIP_ID_EM2860:
- em28xx_info("chip ID is em2860\n");
+ chip_name = "em2860";
break;
case CHIP_ID_EM2870:
- em28xx_info("chip ID is em2870\n");
+ chip_name = "em2870";
dev->wait_after_write = 0;
break;
case CHIP_ID_EM2874:
- em28xx_info("chip ID is em2874\n");
+ chip_name = "em2874";
dev->reg_gpio_num = EM2874_R80_GPIO;
dev->wait_after_write = 0;
break;
case CHIP_ID_EM28174:
- em28xx_info("chip ID is em28174\n");
+ chip_name = "em28174";
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");
+ chip_name = "em2882/3";
dev->wait_after_write = 0;
break;
case CHIP_ID_EM2884:
- em28xx_info("chip ID is em2884\n");
+ chip_name = "em2884";
dev->reg_gpio_num = EM2874_R80_GPIO;
dev->wait_after_write = 0;
break;
default:
- em28xx_info("em28xx chip ID = %d\n", dev->chip_id);
+ printk(KERN_INFO DRIVER_NAME
+ ": unknown em28xx chip ID (%d)\n", dev->chip_id);
}
}
+ if (chip_name != default_chip_name)
+ printk(KERN_INFO DRIVER_NAME
+ ": chip ID is %s\n", chip_name);
+
+ /*
+ * For em2820/em2710, the name may change latter, after checking
+ * if the device has a sensor (so, it is em2710) or not.
+ */
+ snprintf(dev->name, sizeof(dev->name), "%s #%d", chip_name, dev->devno);
+
if (dev->is_audio_only) {
retval = em28xx_audio_setup(dev);
if (retval)
@@ -3039,6 +3066,14 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
em28xx_pre_card_setup(dev);
+ if (dev->chip_id == CHIP_ID_EM2820) {
+ if (dev->board.is_webcam)
+ chip_name = "em2710";
+ else
+ chip_name = "em2820";
+ snprintf(dev->name, sizeof(dev->name), "%s #%d", chip_name, dev->devno);
+ }
+
if (!dev->board.is_em2800) {
/* Resets I2C speed */
retval = em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, dev->board.i2c_speed);
@@ -3056,6 +3091,9 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
return retval;
}
+ v4l2_ctrl_handler_init(hdl, 4);
+ dev->v4l2_dev.ctrl_handler = hdl;
+
/* register i2c bus */
retval = em28xx_i2c_register(dev);
if (retval < 0) {
@@ -3081,6 +3119,18 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
__func__, retval);
goto fail;
}
+ if (dev->audio_mode.ac97 != EM28XX_NO_AC97) {
+ v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
+ v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops,
+ V4L2_CID_AUDIO_VOLUME, 0, 0x1f, 1, 0x1f);
+ } else {
+ /* install the em28xx notify callback */
+ v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_MUTE),
+ em28xx_ctrl_notify, dev);
+ v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_VOLUME),
+ em28xx_ctrl_notify, dev);
+ }
/* wake i2c devices */
em28xx_wake_i2c(dev);
@@ -3110,6 +3160,11 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
msleep(3);
}
+ v4l2_ctrl_handler_setup(&dev->ctrl_handler);
+ retval = dev->ctrl_handler.error;
+ if (retval)
+ goto fail;
+
retval = em28xx_register_analog_devices(dev);
if (retval < 0) {
goto fail;
@@ -3122,6 +3177,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev,
fail:
em28xx_i2c_unregister(dev);
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
unregister_dev:
v4l2_device_unregister(&dev->v4l2_dev);
@@ -3143,7 +3199,7 @@ static int em28xx_usb_probe(struct usb_interface *interface,
struct em28xx *dev = NULL;
int retval;
bool has_audio = false, has_video = false, has_dvb = false;
- int i, nr;
+ int i, nr, try_bulk;
const int ifnum = interface->altsetting[0].desc.bInterfaceNumber;
char *speed;
@@ -3183,9 +3239,10 @@ static int em28xx_usb_probe(struct usb_interface *interface,
}
/* compute alternate max packet sizes */
- dev->alt_max_pkt_size = kmalloc(sizeof(dev->alt_max_pkt_size[0]) *
+ dev->alt_max_pkt_size_isoc =
+ kmalloc(sizeof(dev->alt_max_pkt_size_isoc[0]) *
interface->num_altsetting, GFP_KERNEL);
- if (dev->alt_max_pkt_size == NULL) {
+ if (dev->alt_max_pkt_size_isoc == NULL) {
em28xx_errdev("out of memory!\n");
kfree(dev);
retval = -ENOMEM;
@@ -3208,25 +3265,67 @@ static int em28xx_usb_probe(struct usb_interface *interface,
if (udev->speed == USB_SPEED_HIGH)
size = size * hb_mult(sizedescr);
- if (usb_endpoint_xfer_isoc(e) &&
- usb_endpoint_dir_in(e)) {
+ if (usb_endpoint_dir_in(e)) {
switch (e->bEndpointAddress) {
- case EM28XX_EP_AUDIO:
- has_audio = true;
- break;
- case EM28XX_EP_ANALOG:
+ case 0x82:
has_video = true;
- dev->alt_max_pkt_size[i] = size;
+ if (usb_endpoint_xfer_isoc(e)) {
+ dev->analog_ep_isoc =
+ e->bEndpointAddress;
+ dev->alt_max_pkt_size_isoc[i] = size;
+ } else if (usb_endpoint_xfer_bulk(e)) {
+ dev->analog_ep_bulk =
+ e->bEndpointAddress;
+ }
break;
- case EM28XX_EP_DIGITAL:
- has_dvb = true;
- if (size > dev->dvb_max_pkt_size) {
- dev->dvb_max_pkt_size = size;
- dev->dvb_alt = i;
+ case 0x83:
+ if (usb_endpoint_xfer_isoc(e)) {
+ has_audio = true;
+ } else {
+ printk(KERN_INFO DRIVER_NAME
+ ": error: skipping audio endpoint 0x83, because it uses bulk transfers !\n");
+ }
+ break;
+ case 0x84:
+ if (has_video &&
+ (usb_endpoint_xfer_bulk(e))) {
+ dev->analog_ep_bulk =
+ e->bEndpointAddress;
+ } else {
+ has_dvb = true;
+ if (usb_endpoint_xfer_isoc(e)) {
+ dev->dvb_ep_isoc = e->bEndpointAddress;
+ if (size > dev->dvb_max_pkt_size_isoc) {
+ dev->dvb_max_pkt_size_isoc = size;
+ dev->dvb_alt_isoc = i;
+ }
+ } else {
+ dev->dvb_ep_bulk = e->bEndpointAddress;
+ }
}
break;
}
}
+ /* NOTE:
+ * Old logic with support for isoc transfers only was:
+ * 0x82 isoc => analog
+ * 0x83 isoc => audio
+ * 0x84 isoc => digital
+ *
+ * New logic with support for bulk transfers
+ * 0x82 isoc => analog
+ * 0x82 bulk => analog
+ * 0x83 isoc* => audio
+ * 0x84 isoc => digital
+ * 0x84 bulk => analog or digital**
+ * (*: audio should always be isoc)
+ * (**: analog, if ep 0x82 is isoc, otherwise digital)
+ *
+ * The new logic preserves backwards compatibility and
+ * reflects the endpoint configurations we have seen
+ * so far. But there might be devices for which this
+ * logic is not sufficient...
+ */
}
}
@@ -3261,19 +3360,6 @@ static int em28xx_usb_probe(struct usb_interface *interface,
ifnum,
interface->altsetting->desc.bInterfaceNumber);
- if (has_audio)
- printk(KERN_INFO DRIVER_NAME
- ": Audio Vendor Class interface %i found\n",
- ifnum);
- if (has_video)
- printk(KERN_INFO DRIVER_NAME
- ": Video interface %i found\n",
- ifnum);
- if (has_dvb)
- printk(KERN_INFO DRIVER_NAME
- ": DVB interface %i found\n",
- ifnum);
-
/*
* Make sure we have 480 Mbps of bandwidth, otherwise things like
* video stream wouldn't likely work, since 12 Mbps is generally
@@ -3287,7 +3373,6 @@ static int em28xx_usb_probe(struct usb_interface *interface,
goto err_free;
}
- snprintf(dev->name, sizeof(dev->name), "em28xx #%d", nr);
dev->devno = nr;
dev->model = id->driver_info;
dev->alt = -1;
@@ -3304,6 +3389,24 @@ static int em28xx_usb_probe(struct usb_interface *interface,
}
}
+ if (has_audio)
+ printk(KERN_INFO DRIVER_NAME
+ ": Audio interface %i found %s\n",
+ ifnum,
+ dev->has_audio_class ? "(USB Audio Class)" : "(Vendor Class)");
+ if (has_video)
+ printk(KERN_INFO DRIVER_NAME
+ ": Video interface %i found:%s%s\n",
+ ifnum,
+ dev->analog_ep_bulk ? " bulk" : "",
+ dev->analog_ep_isoc ? " isoc" : "");
+ if (has_dvb)
+ printk(KERN_INFO DRIVER_NAME
+ ": DVB interface %i found:%s%s\n",
+ ifnum,
+ dev->dvb_ep_bulk ? " bulk" : "",
+ dev->dvb_ep_isoc ? " isoc" : "");
+
dev->num_alt = interface->num_altsetting;
if ((unsigned)card[nr] < em28xx_bcount)
@@ -3312,6 +3415,9 @@ static int em28xx_usb_probe(struct usb_interface *interface,
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
+ /* initialize videobuf2 stuff */
+ em28xx_vb2_setup(dev);
+
/* allocate device struct */
mutex_init(&dev->lock);
mutex_lock(&dev->lock);
@@ -3320,13 +3426,46 @@ static int em28xx_usb_probe(struct usb_interface *interface,
goto unlock_and_free;
}
+ if (usb_xfer_mode < 0) {
+ if (dev->board.is_webcam)
+ try_bulk = 1;
+ else
+ try_bulk = 0;
+ } else {
+ try_bulk = usb_xfer_mode > 0;
+ }
+
+ /* Select USB transfer types to use */
+ if (has_video) {
+ if (!dev->analog_ep_isoc || (try_bulk && dev->analog_ep_bulk))
+ dev->analog_xfer_bulk = 1;
+ em28xx_info("analog set to %s mode.\n",
+ dev->analog_xfer_bulk ? "bulk" : "isoc");
+ }
if (has_dvb) {
- /* pre-allocate DVB isoc transfer buffers */
- retval = em28xx_alloc_isoc(dev, EM28XX_DIGITAL_MODE,
- EM28XX_DVB_MAX_PACKETS,
- EM28XX_DVB_NUM_BUFS,
- dev->dvb_max_pkt_size);
+ if (!dev->dvb_ep_isoc || (try_bulk && dev->dvb_ep_bulk))
+ dev->dvb_xfer_bulk = 1;
+
+ em28xx_info("dvb set to %s mode.\n",
+ dev->dvb_xfer_bulk ? "bulk" : "isoc");
+
+ /* pre-allocate DVB usb transfer buffers */
+ if (dev->dvb_xfer_bulk) {
+ retval = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
+ dev->dvb_xfer_bulk,
+ EM28XX_DVB_NUM_BUFS,
+ 512,
+ EM28XX_DVB_BULK_PACKET_MULTIPLIER);
+ } else {
+ retval = em28xx_alloc_urbs(dev, EM28XX_DIGITAL_MODE,
+ dev->dvb_xfer_bulk,
+ EM28XX_DVB_NUM_BUFS,
+ dev->dvb_max_pkt_size_isoc,
+ EM28XX_DVB_NUM_ISOC_PACKETS);
+ }
if (retval) {
+ printk(DRIVER_NAME
+ ": Failed to pre-allocate USB transfer buffers for DVB.\n");
goto unlock_and_free;
}
}
@@ -3344,7 +3483,7 @@ unlock_and_free:
mutex_unlock(&dev->lock);
err_free:
- kfree(dev->alt_max_pkt_size);
+ kfree(dev->alt_max_pkt_size_isoc);
kfree(dev);
err:
@@ -3370,6 +3509,8 @@ static void em28xx_usb_disconnect(struct usb_interface *interface)
if (!dev)
return;
+ dev->disconnected = 1;
+
if (dev->is_audio_only) {
mutex_lock(&dev->lock);
em28xx_close_extension(dev);
@@ -3381,35 +3522,28 @@ static void em28xx_usb_disconnect(struct usb_interface *interface)
flush_request_modules(dev);
- /* wait until all current v4l2 io is finished then deallocate
- resources */
mutex_lock(&dev->lock);
v4l2_device_disconnect(&dev->v4l2_dev);
if (dev->users) {
- em28xx_warn
- ("device %s is open! Deregistration and memory "
- "deallocation are deferred on close.\n",
- video_device_node_name(dev->vdev));
-
- dev->state |= DEV_MISCONFIGURED;
- em28xx_uninit_isoc(dev, dev->mode);
- dev->state |= DEV_DISCONNECTED;
- } else {
- dev->state |= DEV_DISCONNECTED;
- em28xx_release_resources(dev);
+ em28xx_warn("device %s is open! Deregistration and memory deallocation are deferred on close.\n",
+ video_device_node_name(dev->vdev));
+
+ em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE);
+ em28xx_uninit_usb_xfer(dev, EM28XX_DIGITAL_MODE);
}
- /* free DVB isoc buffers */
- em28xx_uninit_isoc(dev, EM28XX_DIGITAL_MODE);
+ em28xx_close_extension(dev);
+ /* NOTE: must be called BEFORE the resources are released */
- mutex_unlock(&dev->lock);
+ if (!dev->users)
+ em28xx_release_resources(dev);
- em28xx_close_extension(dev);
+ mutex_unlock(&dev->lock);
if (!dev->users) {
- kfree(dev->alt_max_pkt_size);
+ kfree(dev->alt_max_pkt_size_isoc);
kfree(dev);
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.