ralink: make dcs930 uvc camera work
Signed-off-by: John Crispin <blogic@openwrt.org> SVN-Revision: 38054
This commit is contained in:
John Crispin
parent
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commit
08abb8822b
1 changed files with 255 additions and 0 deletions
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From be8d5b55f93b8ccb3a6b5cfb1e858a59aeca2d6c Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Thu, 19 Sep 2013 01:50:59 +0200
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Subject: [PATCH] uvc: add iPassion iP2970 support
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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drivers/media/usb/uvc/uvc_driver.c | 12 +++++++++
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drivers/media/usb/uvc/uvc_status.c | 2 ++
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drivers/media/usb/uvc/uvc_v4l2.c | 1 +
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drivers/media/usb/uvc/uvc_video.c | 50 +++++++++++++++++++++++++++++++-----
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drivers/media/usb/uvc/uvcvideo.h | 3 +++
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5 files changed, 61 insertions(+), 7 deletions(-)
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Index: linux-3.10.12/drivers/media/usb/uvc/uvc_driver.c
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===================================================================
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--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_driver.c 2013-09-14 15:55:12.000000000 +0200
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+++ linux-3.10.12/drivers/media/usb/uvc/uvc_driver.c 2013-09-19 04:30:11.825592123 +0200
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@@ -2420,6 +2420,20 @@
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.bInterfaceProtocol = 0,
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.driver_info = UVC_QUIRK_PROBE_MINMAX
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| UVC_QUIRK_IGNORE_SELECTOR_UNIT },
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+
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+/* iPassion iP2970 */
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+ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE
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+ | USB_DEVICE_ID_MATCH_INT_INFO,
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+ .idVendor = 0x1B3B,
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+ .idProduct = 0x2970,
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+ .bInterfaceClass = USB_CLASS_VIDEO,
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+ .bInterfaceSubClass = 1,
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+ .bInterfaceProtocol = 0,
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+ .driver_info = UVC_QUIRK_PROBE_MINMAX
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+ | UVC_QUIRK_STREAM_NO_FID
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+ | UVC_QUIRK_MOTION
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+ | UVC_QUIRK_SINGLE_ISO },
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+
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/* Generic USB Video Class */
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{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
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{}
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Index: linux-3.10.12/drivers/media/usb/uvc/uvc_status.c
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===================================================================
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--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_status.c 2013-09-14 15:55:12.000000000 +0200
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+++ linux-3.10.12/drivers/media/usb/uvc/uvc_status.c 2013-09-19 01:52:55.721188742 +0200
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@@ -139,6 +139,7 @@
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switch (dev->status[0] & 0x0f) {
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case UVC_STATUS_TYPE_CONTROL:
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uvc_event_control(dev, dev->status, len);
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+ dev->motion = 1;
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break;
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case UVC_STATUS_TYPE_STREAMING:
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@@ -182,6 +183,7 @@
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}
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pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
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+ dev->motion = 0;
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/* For high-speed interrupt endpoints, the bInterval value is used as
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* an exponent of two. Some developers forgot about it.
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Index: linux-3.10.12/drivers/media/usb/uvc/uvc_video.c
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===================================================================
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--- linux-3.10.12.orig/drivers/media/usb/uvc/uvc_video.c 2013-09-14 15:55:12.000000000 +0200
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+++ linux-3.10.12/drivers/media/usb/uvc/uvc_video.c 2013-09-19 07:31:28.642057093 +0200
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@@ -21,6 +21,11 @@
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#include <linux/wait.h>
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#include <linux/atomic.h>
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#include <asm/unaligned.h>
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+#include <linux/skbuff.h>
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+#include <linux/kobject.h>
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+#include <linux/netlink.h>
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+#include <linux/kobject.h>
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+#include <linux/workqueue.h>
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#include <media/v4l2-common.h>
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@@ -1074,9 +1079,149 @@
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}
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}
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+struct bh_priv {
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+ unsigned long seen;
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+};
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+
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+struct bh_event {
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+ const char *name;
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+ struct sk_buff *skb;
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+ struct work_struct work;
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+};
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+
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+#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, "webcam", ##args )
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+#define BH_DBG(fmt, args...) do {} while (0)
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+#define BH_SKB_SIZE 2048
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+
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+extern u64 uevent_next_seqnum(void);
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+static int seen = 0;
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+
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+static int bh_event_add_var(struct bh_event *event, int argv,
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+ const char *format, ...)
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+{
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+ static char buf[128];
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+ char *s;
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+ va_list args;
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+ int len;
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+
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+ if (argv)
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+ return 0;
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+
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+ va_start(args, format);
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+ len = vsnprintf(buf, sizeof(buf), format, args);
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+ va_end(args);
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+
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+ if (len >= sizeof(buf)) {
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+ BH_ERR("buffer size too small\n");
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+ WARN_ON(1);
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+ return -ENOMEM;
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+ }
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+
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+ s = skb_put(event->skb, len + 1);
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+ strcpy(s, buf);
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+
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+ BH_DBG("added variable '%s'\n", s);
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+
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+ return 0;
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+}
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+
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+static int motion_hotplug_fill_event(struct bh_event *event)
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+{
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+ int s = jiffies;
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+ int ret;
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+
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+ if (!seen)
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+ seen = jiffies;
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+
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+ ret = bh_event_add_var(event, 0, "HOME=%s", "/");
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+ if (ret)
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+ return ret;
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+
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+ ret = bh_event_add_var(event, 0, "PATH=%s",
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+ "/sbin:/bin:/usr/sbin:/usr/bin");
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+ if (ret)
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+ return ret;
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+
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+ ret = bh_event_add_var(event, 0, "SUBSYSTEM=usb");
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+ if (ret)
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+ return ret;
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+
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+ ret = bh_event_add_var(event, 0, "ACTION=motion");
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+ if (ret)
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+ return ret;
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+
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+ ret = bh_event_add_var(event, 0, "SEEN=%d", s - seen);
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+ if (ret)
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+ return ret;
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+ seen = s;
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+
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+ ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
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+
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+ return ret;
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+}
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+
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+static void motion_hotplug_work(struct work_struct *work)
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+{
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+ struct bh_event *event = container_of(work, struct bh_event, work);
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+ int ret = 0;
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+
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+ event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
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+ if (!event->skb)
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+ goto out_free_event;
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+
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+ ret = bh_event_add_var(event, 0, "%s@", "add");
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+ if (ret)
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+ goto out_free_skb;
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+
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+ ret = motion_hotplug_fill_event(event);
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+ if (ret)
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+ goto out_free_skb;
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+
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+ NETLINK_CB(event->skb).dst_group = 1;
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+ broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
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+
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+out_free_skb:
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+ if (ret) {
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+ BH_ERR("work error %d\n", ret);
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+ kfree_skb(event->skb);
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+ }
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+out_free_event:
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+ kfree(event);
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+}
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+
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+static int motion_hotplug_create_event(void)
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+{
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+ struct bh_event *event;
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+
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+ event = kzalloc(sizeof(*event), GFP_KERNEL);
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+ if (!event)
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+ return -ENOMEM;
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+
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+ event->name = "motion";
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+
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+ INIT_WORK(&event->work, (void *)(void *)motion_hotplug_work);
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+ schedule_work(&event->work);
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+
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+ return 0;
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+}
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+
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+#define MOTION_FLAG_OFFSET 4
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static void uvc_video_decode_end(struct uvc_streaming *stream,
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struct uvc_buffer *buf, const __u8 *data, int len)
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{
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+ if ((stream->dev->quirks & UVC_QUIRK_MOTION) &&
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+ (data[len - 2] == 0xff) && (data[len - 1] == 0xd9)) {
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+ u8 *mem;
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+ buf->state = UVC_BUF_STATE_READY;
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+ mem = (u8 *) (buf->mem + MOTION_FLAG_OFFSET);
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+ if ( stream->dev->motion ) {
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+ stream->dev->motion = 0;
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+ motion_hotplug_create_event();
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+ } else {
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+ *mem &= 0x7f;
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+ }
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+ }
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+
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/* Mark the buffer as done if the EOF marker is set. */
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if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
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uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
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@@ -1477,6 +1622,8 @@
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if (npackets == 0)
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return -ENOMEM;
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+ if (stream->dev->quirks & UVC_QUIRK_SINGLE_ISO)
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+ npackets = 1;
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size = npackets * psize;
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for (i = 0; i < UVC_URBS; ++i) {
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Index: linux-3.10.12/drivers/media/usb/uvc/uvcvideo.h
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===================================================================
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--- linux-3.10.12.orig/drivers/media/usb/uvc/uvcvideo.h 2013-09-14 15:55:12.000000000 +0200
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+++ linux-3.10.12/drivers/media/usb/uvc/uvcvideo.h 2013-09-19 04:36:51.801609222 +0200
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@@ -137,6 +137,8 @@
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#define UVC_QUIRK_FIX_BANDWIDTH 0x00000080
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#define UVC_QUIRK_PROBE_DEF 0x00000100
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#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200
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+#define UVC_QUIRK_MOTION 0x00000400
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+#define UVC_QUIRK_SINGLE_ISO 0x00000800
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/* Format flags */
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#define UVC_FMT_FLAG_COMPRESSED 0x00000001
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@@ -538,6 +540,7 @@
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__u8 *status;
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struct input_dev *input;
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char input_phys[64];
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+ int motion;
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};
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enum uvc_handle_state {
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