commit backport

From: Mauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

10 files changed, 82 insertions, 36 deletions

diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
index de7ee7264..d96f0f510 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
@@ -195,8 +195,20 @@ struct pvr2_hdw {
 	struct mutex big_lock_mutex;
 	int big_lock_held;  /* For debugging */
 
+	/* This is a simple string which identifies the instance of this
+	   driver.  It is unique within the set of existing devices, but
+	   there is no attempt to keep the name consistent with the same
+	   physical device each time. */
 	char name[32];
 
+	/* This is a simple string which identifies the physical device
+	   instance itself - if possible.  (If not possible, then it is
+	   based on the specific driver instance, similar to name above.)
+	   The idea here is that userspace might hopefully be able to use
+	   this recognize specific tuners.  It will encode a serial number,
+	   if available. */
+	char identifier[32];
+
 	/* I2C stuff */
 	struct i2c_adapter i2c_adap;
 	struct i2c_algorithm i2c_algo;
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 21fdc66b4..19e12c5aa 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -1284,6 +1284,12 @@ const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *hdw)
 }
 
 
+const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *hdw)
+{
+	return hdw->identifier;
+}
+
+
 unsigned long pvr2_hdw_get_cur_freq(struct pvr2_hdw *hdw)
 {
 	return hdw->freqSelector ? hdw->freqValTelevision : hdw->freqValRadio;
@@ -2041,6 +2047,19 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw)
 		hdw->std_mask_eeprom = V4L2_STD_ALL;
 	}
 
+	if (hdw->serial_number) {
+		idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
+				"sn-%lu", hdw->serial_number);
+	} else if (hdw->unit_number >= 0) {
+		idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
+				"unit-%c",
+				hdw->unit_number + 'a');
+	} else {
+		idx = scnprintf(hdw->identifier, sizeof(hdw->identifier) - 1,
+				"unit-??");
+	}
+	hdw->identifier[idx] = 0;
+
 	pvr2_hdw_setup_std(hdw);
 
 	if (!get_default_tuner_type(hdw)) {
@@ -2417,10 +2436,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
 	hdw->usb_intf = intf;
 	hdw->usb_dev = interface_to_usbdev(intf);
 
-	scnprintf(hdw->bus_info,sizeof(hdw->bus_info),
-		  "usb %s address %d",
-		  dev_name(&hdw->usb_dev->dev),
-		  hdw->usb_dev->devnum);
+	usb_make_path(hdw->usb_dev, hdw->bus_info, sizeof(hdw->bus_info));
 
 	ifnum = hdw->usb_intf->cur_altsetting->desc.bInterfaceNumber;
 	usb_set_interface(hdw->usb_dev,ifnum,0);
@@ -3747,7 +3763,11 @@ void pvr2_hdw_device_reset(struct pvr2_hdw *hdw)
 	int ret;
 	pvr2_trace(PVR2_TRACE_INIT,"Performing a device reset...");
 	ret = usb_lock_device_for_reset(hdw->usb_dev,NULL);
-	if (ret == 1) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+	/* Due to the API changes, the ret value for success changed */
+	ret = ret != 1;
+#endif
+	if (ret == 0) {
 		ret = usb_reset_device(hdw->usb_dev);
 		usb_unlock_device(hdw->usb_dev);
 	} else {
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.h b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.h
index 732546fa3..e4d04a7fe 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.h
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw.h
@@ -138,6 +138,9 @@ unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
 /* Retrieve bus location info of device */
 const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
 
+/* Retrieve per-instance string identifier for this specific device */
+const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *);
+
 /* Called when hardware has been unplugged */
 void pvr2_hdw_disconnect(struct pvr2_hdw *);
 
@@ -242,8 +245,7 @@ void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
 				     enum pvr2_v4l_type index,int);
 
 /* Direct read/write access to chip's registers:
-   match_type - how to interpret match_chip (e.g. driver ID, i2c address)
-   match_chip - chip match value (e.g. I2C_DRIVERD_xxxx)
+   match - specify criteria to identify target chip (this is a v4l dbg struct)
    reg_id  - register number to access
    setFl   - true to set the register, false to read it
    val_ptr - storage location for source / result. */
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
index 1b1424955..073b02a4b 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-chips-v4l2.c
@@ -32,17 +32,19 @@
 
 #define trace_i2c(...) pvr2_trace(PVR2_TRACE_I2C,__VA_ARGS__)
 
-#define OP_STANDARD 0
-#define OP_AUDIOMODE 1
-#define OP_BCSH 2
-#define OP_VOLUME 3
-#define OP_FREQ 4
-#define OP_AUDIORATE 5
-#define OP_CROP 6
-#define OP_SIZE 7
-#define OP_LOG 8
+#define OP_INIT 0 /* MUST come first so it is run first */
+#define OP_STANDARD 1
+#define OP_AUDIOMODE 2
+#define OP_BCSH 3
+#define OP_VOLUME 4
+#define OP_FREQ 5
+#define OP_AUDIORATE 6
+#define OP_CROP 7
+#define OP_SIZE 8
+#define OP_LOG 9
 
 static const struct pvr2_i2c_op * const ops[] = {
+	[OP_INIT] = &pvr2_i2c_op_v4l2_init,
 	[OP_STANDARD] = &pvr2_i2c_op_v4l2_standard,
 	[OP_AUDIOMODE] = &pvr2_i2c_op_v4l2_audiomode,
 	[OP_BCSH] = &pvr2_i2c_op_v4l2_bcsh,
@@ -57,7 +59,8 @@ void pvr2_i2c_probe(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
 {
 	int id;
 	id = cp->client->driver->id;
-	cp->ctl_mask = ((1 << OP_STANDARD) |
+	cp->ctl_mask = ((1 << OP_INIT) |
+			(1 << OP_STANDARD) |
 			(1 << OP_AUDIOMODE) |
 			(1 << OP_BCSH) |
 			(1 << OP_VOLUME) |
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
index ab703d6d5..db61c1fb0 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.c
@@ -26,6 +26,20 @@
 #include <media/v4l2-common.h>
 #include "compat.h"
 
+static void execute_init(struct pvr2_hdw *hdw)
+{
+	u32 dummy = 0;
+	pvr2_trace(PVR2_TRACE_CHIPS, "i2c v4l2 init");
+	pvr2_i2c_core_cmd(hdw, VIDIOC_INT_INIT, &dummy);
+}
+
+
+const struct pvr2_i2c_op pvr2_i2c_op_v4l2_init = {
+	.update = execute_init,
+	.name = "v4l2_init",
+};
+
+
 static void set_standard(struct pvr2_hdw *hdw)
 {
 	pvr2_trace(PVR2_TRACE_CHIPS,"i2c v4l2 set_standard");
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.h b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.h
index eb744a206..69a63f2a8 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.h
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-cmd-v4l2.h
@@ -24,6 +24,7 @@
 
 #include "pvrusb2-i2c-core.h"
 
+extern const struct pvr2_i2c_op pvr2_i2c_op_v4l2_init;
 extern const struct pvr2_i2c_op pvr2_i2c_op_v4l2_standard;
 extern const struct pvr2_i2c_op pvr2_i2c_op_v4l2_radio;
 extern const struct pvr2_i2c_op pvr2_i2c_op_v4l2_bcsh;
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
index 877c8f7b1..d95abcc55 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-i2c-core.c
@@ -838,7 +838,7 @@ int pvr2_i2c_core_check_stale(struct pvr2_hdw *hdw)
 		if (!(msk & pm)) continue;
 		pm &= ~msk;
 		opf = pvr2_i2c_get_op(idx);
-		if (!opf) continue;
+		if (!(opf && opf->check)) continue;
 		if (opf->check(hdw)) {
 			sm |= msk;
 		}
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-main.c b/linux/drivers/media/video/pvrusb2/pvrusb2-main.c
index 2399959a8..196e08246 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-main.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-main.c
@@ -138,10 +138,10 @@ static int __init pvr_init(void)
 	ret = usb_register(&pvr_driver);
 
 	if (ret == 0)
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+		printk(KERN_INFO "pvrusb2: " DRIVER_VERSION ":"
 		       DRIVER_DESC "\n");
 	if (pvrusb2_debug)
-		printk(KERN_INFO KBUILD_MODNAME ": Debug mask is %d (0x%x)\n",
+		printk(KERN_INFO "pvrusb2: Debug mask is %d (0x%x)\n",
 		       pvrusb2_debug,pvrusb2_debug);
 
 	pvr2_trace(PVR2_TRACE_INIT,"pvr_init complete");
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
index 770f31e60..84379d6e0 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
@@ -636,16 +636,8 @@ static void class_dev_create(struct pvr2_sysfs *sfp,
 	pvr2_sysfs_trace("Creating class_dev id=%p",class_dev);
 
 	class_dev->class = &class_ptr->class;
-	if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
-		dev_set_name(class_dev, "sn-%lu",
-			 pvr2_hdw_get_sn(sfp->channel.hdw));
-	} else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
-		dev_set_name(class_dev, "unit-%c",
-			 pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
-	} else {
-		kfree(class_dev);
-		return;
-	}
+	dev_set_name(class_dev, "%s",
+		     pvr2_hdw_get_device_identifier(sfp->channel.hdw));
 
 	class_dev->parent = &usb_dev->dev;
 
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/linux/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 7340f4815..e4bf0278c 100644
--- a/linux/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/linux/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -92,7 +92,7 @@ static struct v4l2_capability pvr_capability ={
 	.card           = "Hauppauge WinTV pvr-usb2",
 	.bus_info       = "usb",
 	.version        = KERNEL_VERSION(0,8,0),
-	.capabilities   = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE |
+	.capabilities   = (V4L2_CAP_VIDEO_CAPTURE |
 			   V4L2_CAP_TUNER | V4L2_CAP_AUDIO | V4L2_CAP_RADIO |
 			   V4L2_CAP_READWRITE),
 	.reserved       = {0,0,0,0}
@@ -1275,8 +1275,9 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
 		dip->minor_type = pvr2_v4l_type_video;
 		nr_ptr = video_nr;
 		if (!dip->stream) {
-			err("Failed to set up pvrusb2 v4l video dev"
-			    " due to missing stream instance");
+			pr_err(KBUILD_MODNAME
+				": Failed to set up pvrusb2 v4l video dev"
+				" due to missing stream instance\n");
 			return;
 		}
 		break;
@@ -1293,8 +1294,8 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
 		break;
 	default:
 		/* Bail out (this should be impossible) */
-		err("Failed to set up pvrusb2 v4l dev"
-		    " due to unrecognized config");
+		pr_err(KBUILD_MODNAME ": Failed to set up pvrusb2 v4l dev"
+		    " due to unrecognized config\n");
 		return;
 	}
 
@@ -1310,7 +1311,8 @@ static void pvr2_v4l2_dev_init(struct pvr2_v4l2_dev *dip,
 				   dip->v4l_type, mindevnum) < 0) &&
 	    (video_register_device(&dip->devbase,
 				   dip->v4l_type, -1) < 0)) {
-		err("Failed to register pvrusb2 v4l device");
+		pr_err(KBUILD_MODNAME
+			": Failed to register pvrusb2 v4l device\n");
 	}
 
 	printk(KERN_INFO "pvrusb2: registered device %s%u [%s]\n",