[PATCH] USB: SN9C10x driver updates

SN9C10x driver updates.

Changes: + new, - removed, * cleanup, @ bugfix

@ Fix stream_interrupt()
@ Fix vidioc_enum_input() and split vidioc_gs_input()
@ Need usb_get|put_dev() when disconnecting, if the device is open
* Use wait_event_interruptible_timeout() instead of wait_event_interruptible()
  when waiting for video frames
* replace wake_up_interruptible(&wait_stream) with wake_up(&wait_stream)
* Cleanups and updates in the documentation
+ Use per-device sensor structures
+ Add support for PAS202BCA image sensors
+ Add frame_timeout module parameter

Signed-off-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Documentation/usb/sn9c102.txt

@@ -196,6 +196,14 @@ Description:    Force the application to unmap previously mapped buffer memory
                 1 = force memory unmapping (save memory)
 Default:        0
 -------------------------------------------------------------------------------
+Name:           frame_timeout
+Type:           uint array (min = 0, max = 64)
+Syntax:         <n[,...]>
+Description:    Timeout for a video frame in seconds. This parameter is
+                specific for each detected camera. This parameter can be
+                changed at runtime thanks to the /sys filesystem interface.
+Default:        2
+-------------------------------------------------------------------------------
 Name:           debug
 Type:           ushort
 Syntax:         <n> 
@@ -321,6 +329,7 @@ Vendor ID  Product ID
 ---------  ----------
 0x0c45     0x6001
 0x0c45     0x6005
+0x0c45     0x6007
 0x0c45     0x6009
 0x0c45     0x600d
 0x0c45     0x6024
@@ -370,6 +379,7 @@ HV7131D     Hynix Semiconductor, Inc.
 MI-0343     Micron Technology, Inc.
 OV7630      OmniVision Technologies, Inc.
 PAS106B     PixArt Imaging, Inc.
+PAS202BCA   PixArt Imaging, Inc.
 PAS202BCB   PixArt Imaging, Inc.
 TAS5110C1B  Taiwan Advanced Sensor Corporation
 TAS5130D1B  Taiwan Advanced Sensor Corporation
@@ -493,6 +503,7 @@ Many thanks to following persons for their contribute (listed in alphabetical
 order):
 
 - Luca Capello for the donation of a webcam;
+- Philippe Coval for having helped testing the PAS202BCA image sensor;
 - Joao Rodrigo Fuzaro, Joao Limirio, Claudio Filho and Caio Begotti for the
   donation of a webcam;
 - Jon Hollstrom for the donation of a webcam;

drivers/usb/media/Makefile

@@ -2,7 +2,10 @@
 # Makefile for USB Media drivers
 #
 
-sn9c102-objs	:= sn9c102_core.o sn9c102_hv7131d.o sn9c102_mi0343.o sn9c102_ov7630.o sn9c102_pas106b.o sn9c102_pas202bcb.o sn9c102_tas5110c1b.o sn9c102_tas5130d1b.o
+sn9c102-objs	:= sn9c102_core.o sn9c102_hv7131d.o sn9c102_mi0343.o \
+		   sn9c102_ov7630.o sn9c102_pas106b.o sn9c102_pas202bca.o \
+		   sn9c102_pas202bcb.o sn9c102_tas5110c1b.o \
+		   sn9c102_tas5130d1b.o
 et61x251-objs	:= et61x251_core.o et61x251_tas5130d1b.o
 zc0301-objs	:= zc0301_core.o zc0301_pas202bcb.o
 

drivers/usb/media/sn9c102.h

@@ -34,7 +34,8 @@
 #include <linux/param.h>
 #include <linux/rwsem.h>
 #include <linux/mutex.h>
-#include <asm/semaphore.h>
+#include <linux/string.h>
+#include <linux/stddef.h>
 
 #include "sn9c102_sensor.h"
 
@@ -51,6 +52,7 @@
 #define SN9C102_ALTERNATE_SETTING 8
 #define SN9C102_URB_TIMEOUT       msecs_to_jiffies(2 * SN9C102_ISO_PACKETS)
 #define SN9C102_CTRL_TIMEOUT      300
+#define SN9C102_FRAME_TIMEOUT     2
 
 /*****************************************************************************/
 
@@ -108,6 +110,7 @@ struct sn9c102_sysfs_attr {
 
 struct sn9c102_module_param {
 	u8 force_munmap;
+	u16 frame_timeout;
 };
 
 static DEFINE_MUTEX(sn9c102_sysfs_lock);
@@ -117,7 +120,7 @@ struct sn9c102_device {
 	struct video_device* v4ldev;
 
 	enum sn9c102_bridge bridge;
-	struct sn9c102_sensor* sensor;
+	struct sn9c102_sensor sensor;
 
 	struct usb_device* usbdev;
 	struct urb* urb[SN9C102_URBS];
@@ -149,12 +152,21 @@ struct sn9c102_device {
 
 /*****************************************************************************/
 
+struct sn9c102_device*
+sn9c102_match_id(struct sn9c102_device* cam, const struct usb_device_id *id)
+{
+	if (usb_match_id(usb_ifnum_to_if(cam->usbdev, 0), id))
+		return cam;
+
+	return NULL;
+}
+
+
 void
 sn9c102_attach_sensor(struct sn9c102_device* cam,
                       struct sn9c102_sensor* sensor)
 {
-	cam->sensor = sensor;
-	cam->sensor->usbdev = cam->usbdev;
+	memcpy(&cam->sensor, sensor, sizeof(struct sn9c102_sensor));
 }
 
 /*****************************************************************************/
@@ -197,7 +209,8 @@ do {                                                                          \
 
 #undef PDBG
 #define PDBG(fmt, args...)                                                    \
-dev_info(&cam->dev, "[%s:%d] " fmt "\n", __FUNCTION__, __LINE__ , ## args)
+dev_info(&cam->usbdev->dev, "[%s:%d] " fmt "\n",                              \
+         __FUNCTION__, __LINE__ , ## args)
 
 #undef PDBGG
 #define PDBGG(fmt, args...) do {;} while(0) /* placeholder */