Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "This series contains:
   - Exynos s5p-mfc driver got support for VP8 encoder
   - Some SoC drivers gained support for asynchronous registration
     (needed for DT)
   - The RC subsystem gained support for RC activity LED;
   - New drivers added: a video decoder(adv7842), a video encoder
     (adv7511), a new GSPCA driver (stk1135) and support for Renesas
     R-Car (vsp1)
   - the first SDR kernel driver: mirics msi3101.  Due to some troubles
     with the driver, and because the API is still under discussion, it
     will be merged at staging for 3.12.  Need to rework on it
   - usual new boards additions, fixes, cleanups and driver
     improvements"

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (242 commits)
  [media] cx88: Fix regression: CX88_AUDIO_WM8775 can't be 0
  [media] exynos4-is: Fix entity unregistration on error path
  [media] exynos-gsc: Register v4l2 device
  [media] exynos4-is: Fix fimc-lite bayer formats
  [media] em28xx: fix assignment of the eeprom data
  [media] hdpvr: fix iteration over uninitialized lists in hdpvr_probe()
  [media] usbtv: Throw corrupted frames away
  [media] usbtv: Fix deinterlacing
  [media] v4l2: added missing mutex.h include to v4l2-ctrls.h
  [media] DocBook: upgrade media_api DocBook version to 4.2
  [media] ml86v7667: fix compile warning: 'ret' set but not used
  [media] s5p-g2d: Fix registration failure
  [media] media: coda: Fix DT driver data pointer for i.MX27
  [media] s5p-mfc: Fix input/output format reporting
  [media] v4l: vsp1: Fix mutex double lock at streamon time
  [media] v4l: vsp1: Add support for RT clock
  [media] v4l: vsp1: Initialize media device bus_info field
  [media] davinci: vpif_capture: fix error return code in vpif_probe()
  [media] davinci: vpif_display: fix error return code in vpif_probe()
  [media] MAINTAINERS: add entries for adv7511 and adv7842
  ...

6 files changed, 1952 insertions, 42 deletions

diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index ae0abc350e3..46f1e619cbd 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -29,6 +29,8 @@ source "drivers/staging/media/dt3155v4l/Kconfig"
 
 source "drivers/staging/media/go7007/Kconfig"
 
+source "drivers/staging/media/msi3101/Kconfig"
+
 source "drivers/staging/media/solo6x10/Kconfig"
 
 # Keep LIRC at the end, as it has sub-menus
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index 2b97cae9949..eb7f30b1ccd 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -4,4 +4,5 @@ obj-$(CONFIG_LIRC_STAGING)	+= lirc/
 obj-$(CONFIG_SOLO6X10)		+= solo6x10/
 obj-$(CONFIG_VIDEO_DT3155)	+= dt3155v4l/
 obj-$(CONFIG_VIDEO_GO7007)	+= go7007/
+obj-$(CONFIG_USB_MSI3101)	+= msi3101/
 obj-$(CONFIG_VIDEO_DM365_VPFE)	+= davinci_vpfe/
diff --git a/drivers/staging/media/lirc/lirc_igorplugusb.c b/drivers/staging/media/lirc/lirc_igorplugusb.c
index 2faa391006d..28c8b0bcf5b 100644
--- a/drivers/staging/media/lirc/lirc_igorplugusb.c
+++ b/drivers/staging/media/lirc/lirc_igorplugusb.c
@@ -240,10 +240,6 @@ static int unregister_from_lirc(struct igorplug *ir)
 	dprintk(DRIVER_NAME "[%d]: calling lirc_unregister_driver\n", devnum);
 	lirc_unregister_driver(d->minor);
 
-	kfree(d);
-	ir->d = NULL;
-	kfree(ir);
-
 	return devnum;
 }
 
@@ -377,20 +373,16 @@ static int igorplugusb_remote_poll(void *data, struct lirc_buffer *buf)
 	return -ENODATA;
 }
 
-
-
 static int igorplugusb_remote_probe(struct usb_interface *intf,
 				    const struct usb_device_id *id)
 {
-	struct usb_device *dev = NULL;
+	struct usb_device *dev;
 	struct usb_host_interface *idesc = NULL;
 	struct usb_endpoint_descriptor *ep;
 	struct igorplug *ir = NULL;
 	struct lirc_driver *driver = NULL;
 	int devnum, pipe, maxp;
-	int minor = 0;
 	char buf[63], name[128] = "";
-	int mem_failure = 0;
 	int ret;
 
 	dprintk(DRIVER_NAME ": usb probe called.\n");
@@ -416,24 +408,18 @@ static int igorplugusb_remote_probe(struct usb_interface *intf,
 	dprintk(DRIVER_NAME "[%d]: bytes_in_key=%zu maxp=%d\n",
 		devnum, CODE_LENGTH, maxp);
 
-	mem_failure = 0;
-	ir = kzalloc(sizeof(struct igorplug), GFP_KERNEL);
-	if (!ir) {
-		mem_failure = 1;
-		goto mem_failure_switch;
-	}
-	driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
-	if (!driver) {
-		mem_failure = 2;
-		goto mem_failure_switch;
-	}
+	ir = devm_kzalloc(&intf->dev, sizeof(*ir), GFP_KERNEL);
+	if (!ir)
+		return -ENOMEM;
+
+	driver = devm_kzalloc(&intf->dev, sizeof(*driver), GFP_KERNEL);
+	if (!driver)
+		return -ENOMEM;
 
 	ir->buf_in = usb_alloc_coherent(dev, DEVICE_BUFLEN + DEVICE_HEADERLEN,
 					GFP_ATOMIC, &ir->dma_in);
-	if (!ir->buf_in) {
-		mem_failure = 3;
-		goto mem_failure_switch;
-	}
+	if (!ir->buf_in)
+		return -ENOMEM;
 
 	strcpy(driver->name, DRIVER_NAME " ");
 	driver->minor = -1;
@@ -449,27 +435,14 @@ static int igorplugusb_remote_probe(struct usb_interface *intf,
 	driver->dev = &intf->dev;
 	driver->owner = THIS_MODULE;
 
-	minor = lirc_register_driver(driver);
-	if (minor < 0)
-		mem_failure = 9;
-
-mem_failure_switch:
-
-	switch (mem_failure) {
-	case 9:
+	ret = lirc_register_driver(driver);
+	if (ret < 0) {
 		usb_free_coherent(dev, DEVICE_BUFLEN + DEVICE_HEADERLEN,
 			ir->buf_in, ir->dma_in);
-	case 3:
-		kfree(driver);
-	case 2:
-		kfree(ir);
-	case 1:
-		printk(DRIVER_NAME "[%d]: out of memory (code=%d)\n",
-			devnum, mem_failure);
-		return -ENOMEM;
+		return ret;
 	}
 
-	driver->minor = minor;
+	driver->minor = ret;
 	ir->d = driver;
 	ir->devnum = devnum;
 	ir->usbdev = dev;
@@ -502,7 +475,6 @@ mem_failure_switch:
 	return 0;
 }
 
-
 static void igorplugusb_remote_disconnect(struct usb_interface *intf)
 {
 	struct usb_device *usbdev = interface_to_usbdev(intf);
diff --git a/drivers/staging/media/msi3101/Kconfig b/drivers/staging/media/msi3101/Kconfig
new file mode 100644
index 00000000000..b94a95a597d
--- /dev/null
+++ b/drivers/staging/media/msi3101/Kconfig
@@ -0,0 +1,3 @@
+config USB_MSI3101
+	tristate "Mirics MSi3101 SDR Dongle"
+	depends on USB && VIDEO_DEV && VIDEO_V4L2
diff --git a/drivers/staging/media/msi3101/Makefile b/drivers/staging/media/msi3101/Makefile
new file mode 100644
index 00000000000..3730654b0eb
--- /dev/null
+++ b/drivers/staging/media/msi3101/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_USB_MSI3101)             += sdr-msi3101.o
diff --git a/drivers/staging/media/msi3101/sdr-msi3101.c b/drivers/staging/media/msi3101/sdr-msi3101.c
new file mode 100644
index 00000000000..24c7b70a6cb
--- /dev/null
+++ b/drivers/staging/media/msi3101/sdr-msi3101.c
@@ -0,0 +1,1931 @@
+/*
+ * Mirics MSi3101 SDR Dongle driver
+ *
+ * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
+ *
+ *    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
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License along
+ *    with this program; if not, write to the Free Software Foundation, Inc.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * That driver is somehow based of pwc driver:
+ *  (C) 1999-2004 Nemosoft Unv.
+ *  (C) 2004-2006 Luc Saillard (luc@saillard.org)
+ *  (C) 2011 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Development tree of that driver will be on:
+ * http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/mirics
+ *
+ * GNU Radio plugin "gr-kernel" for device usage will be on:
+ * http://git.linuxtv.org/anttip/gr-kernel.git
+ *
+ * TODO:
+ * Help is very highly welcome for these + all the others you could imagine:
+ * - split USB ADC interface and RF tuner to own drivers (msi2500 and msi001)
+ * - move controls to V4L2 API
+ * - use libv4l2 for stream format conversions
+ * - gr-kernel: switch to v4l2_mmap (current read eats a lot of cpu)
+ * - SDRSharp support
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/gcd.h>
+#include <asm/div64.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <linux/usb.h>
+#include <media/videobuf2-vmalloc.h>
+
+struct msi3101_gain {
+	u8 tot:7;
+	u8 baseband:6;
+	bool lna:1;
+	bool mixer:1;
+};
+
+/* 60 – 120 MHz band, lna 24dB, mixer 19dB */
+static const struct msi3101_gain msi3101_gain_lut_120[] = {
+	{  0,  0,  0,  0},
+	{  1,  1,  0,  0},
+	{  2,  2,  0,  0},
+	{  3,  3,  0,  0},
+	{  4,  4,  0,  0},
+	{  5,  5,  0,  0},
+	{  6,  6,  0,  0},
+	{  7,  7,  0,  0},
+	{  8,  8,  0,  0},
+	{  9,  9,  0,  0},
+	{ 10, 10,  0,  0},
+	{ 11, 11,  0,  0},
+	{ 12, 12,  0,  0},
+	{ 13, 13,  0,  0},
+	{ 14, 14,  0,  0},
+	{ 15, 15,  0,  0},
+	{ 16, 16,  0,  0},
+	{ 17, 17,  0,  0},
+	{ 18, 18,  0,  0},
+	{ 19, 19,  0,  0},
+	{ 20, 20,  0,  0},
+	{ 21, 21,  0,  0},
+	{ 22, 22,  0,  0},
+	{ 23, 23,  0,  0},
+	{ 24, 24,  0,  0},
+	{ 25, 25,  0,  0},
+	{ 26, 26,  0,  0},
+	{ 27, 27,  0,  0},
+	{ 28, 28,  0,  0},
+	{ 29,  5,  1,  0},
+	{ 30,  6,  1,  0},
+	{ 31,  7,  1,  0},
+	{ 32,  8,  1,  0},
+	{ 33,  9,  1,  0},
+	{ 34, 10,  1,  0},
+	{ 35, 11,  1,  0},
+	{ 36, 12,  1,  0},
+	{ 37, 13,  1,  0},
+	{ 38, 14,  1,  0},
+	{ 39, 15,  1,  0},
+	{ 40, 16,  1,  0},
+	{ 41, 17,  1,  0},
+	{ 42, 18,  1,  0},
+	{ 43, 19,  1,  0},
+	{ 44, 20,  1,  0},
+	{ 45, 21,  1,  0},
+	{ 46, 22,  1,  0},
+	{ 47, 23,  1,  0},
+	{ 48, 24,  1,  0},
+	{ 49, 25,  1,  0},
+	{ 50, 26,  1,  0},
+	{ 51, 27,  1,  0},
+	{ 52, 28,  1,  0},
+	{ 53, 29,  1,  0},
+	{ 54, 30,  1,  0},
+	{ 55, 31,  1,  0},
+	{ 56, 32,  1,  0},
+	{ 57, 33,  1,  0},
+	{ 58, 34,  1,  0},
+	{ 59, 35,  1,  0},
+	{ 60, 36,  1,  0},
+	{ 61, 37,  1,  0},
+	{ 62, 38,  1,  0},
+	{ 63, 39,  1,  0},
+	{ 64, 40,  1,  0},
+	{ 65, 41,  1,  0},
+	{ 66, 42,  1,  0},
+	{ 67, 43,  1,  0},
+	{ 68, 44,  1,  0},
+	{ 69, 45,  1,  0},
+	{ 70, 46,  1,  0},
+	{ 71, 47,  1,  0},
+	{ 72, 48,  1,  0},
+	{ 73, 49,  1,  0},
+	{ 74, 50,  1,  0},
+	{ 75, 51,  1,  0},
+	{ 76, 52,  1,  0},
+	{ 77, 53,  1,  0},
+	{ 78, 54,  1,  0},
+	{ 79, 55,  1,  0},
+	{ 80, 56,  1,  0},
+	{ 81, 57,  1,  0},
+	{ 82, 58,  1,  0},
+	{ 83, 40,  1,  1},
+	{ 84, 41,  1,  1},
+	{ 85, 42,  1,  1},
+	{ 86, 43,  1,  1},
+	{ 87, 44,  1,  1},
+	{ 88, 45,  1,  1},
+	{ 89, 46,  1,  1},
+	{ 90, 47,  1,  1},
+	{ 91, 48,  1,  1},
+	{ 92, 49,  1,  1},
+	{ 93, 50,  1,  1},
+	{ 94, 51,  1,  1},
+	{ 95, 52,  1,  1},
+	{ 96, 53,  1,  1},
+	{ 97, 54,  1,  1},
+	{ 98, 55,  1,  1},
+	{ 99, 56,  1,  1},
+	{100, 57,  1,  1},
+	{101, 58,  1,  1},
+	{102, 59,  1,  1},
+};
+
+/* 120 – 245 MHz band, lna 24dB, mixer 19dB */
+static const struct msi3101_gain msi3101_gain_lut_245[] = {
+	{  0,  0,  0,  0},
+	{  1,  1,  0,  0},
+	{  2,  2,  0,  0},
+	{  3,  3,  0,  0},
+	{  4,  4,  0,  0},
+	{  5,  5,  0,  0},
+	{  6,  6,  0,  0},
+	{  7,  7,  0,  0},
+	{  8,  8,  0,  0},
+	{  9,  9,  0,  0},
+	{ 10, 10,  0,  0},
+	{ 11, 11,  0,  0},
+	{ 12, 12,  0,  0},
+	{ 13, 13,  0,  0},
+	{ 14, 14,  0,  0},
+	{ 15, 15,  0,  0},
+	{ 16, 16,  0,  0},
+	{ 17, 17,  0,  0},
+	{ 18, 18,  0,  0},
+	{ 19, 19,  0,  0},
+	{ 20, 20,  0,  0},
+	{ 21, 21,  0,  0},
+	{ 22, 22,  0,  0},
+	{ 23, 23,  0,  0},
+	{ 24, 24,  0,  0},
+	{ 25, 25,  0,  0},
+	{ 26, 26,  0,  0},
+	{ 27, 27,  0,  0},
+	{ 28, 28,  0,  0},
+	{ 29,  5,  1,  0},
+	{ 30,  6,  1,  0},
+	{ 31,  7,  1,  0},
+	{ 32,  8,  1,  0},
+	{ 33,  9,  1,  0},
+	{ 34, 10,  1,  0},
+	{ 35, 11,  1,  0},
+	{ 36, 12,  1,  0},
+	{ 37, 13,  1,  0},
+	{ 38, 14,  1,  0},
+	{ 39, 15,  1,  0},
+	{ 40, 16,  1,  0},
+	{ 41, 17,  1,  0},
+	{ 42, 18,  1,  0},
+	{ 43, 19,  1,  0},
+	{ 44, 20,  1,  0},
+	{ 45, 21,  1,  0},
+	{ 46, 22,  1,  0},
+	{ 47, 23,  1,  0},
+	{ 48, 24,  1,  0},
+	{ 49, 25,  1,  0},
+	{ 50, 26,  1,  0},
+	{ 51, 27,  1,  0},
+	{ 52, 28,  1,  0},
+	{ 53, 29,  1,  0},
+	{ 54, 30,  1,  0},
+	{ 55, 31,  1,  0},
+	{ 56, 32,  1,  0},
+	{ 57, 33,  1,  0},
+	{ 58, 34,  1,  0},
+	{ 59, 35,  1,  0},
+	{ 60, 36,  1,  0},
+	{ 61, 37,  1,  0},
+	{ 62, 38,  1,  0},
+	{ 63, 39,  1,  0},
+	{ 64, 40,  1,  0},
+	{ 65, 41,  1,  0},
+	{ 66, 42,  1,  0},
+	{ 67, 43,  1,  0},
+	{ 68, 44,  1,  0},
+	{ 69, 45,  1,  0},
+	{ 70, 46,  1,  0},
+	{ 71, 47,  1,  0},
+	{ 72, 48,  1,  0},
+	{ 73, 49,  1,  0},
+	{ 74, 50,  1,  0},
+	{ 75, 51,  1,  0},
+	{ 76, 52,  1,  0},
+	{ 77, 53,  1,  0},
+	{ 78, 54,  1,  0},
+	{ 79, 55,  1,  0},
+	{ 80, 56,  1,  0},
+	{ 81, 57,  1,  0},
+	{ 82, 58,  1,  0},
+	{ 83, 40,  1,  1},
+	{ 84, 41,  1,  1},
+	{ 85, 42,  1,  1},
+	{ 86, 43,  1,  1},
+	{ 87, 44,  1,  1},
+	{ 88, 45,  1,  1},
+	{ 89, 46,  1,  1},
+	{ 90, 47,  1,  1},
+	{ 91, 48,  1,  1},
+	{ 92, 49,  1,  1},
+	{ 93, 50,  1,  1},
+	{ 94, 51,  1,  1},
+	{ 95, 52,  1,  1},
+	{ 96, 53,  1,  1},
+	{ 97, 54,  1,  1},
+	{ 98, 55,  1,  1},
+	{ 99, 56,  1,  1},
+	{100, 57,  1,  1},
+	{101, 58,  1,  1},
+	{102, 59,  1,  1},
+};
+
+/* 420 – 1000 MHz band, lna 7dB, mixer 19dB */
+static const struct msi3101_gain msi3101_gain_lut_1000[] = {
+	{  0,  0, 0,  0},
+	{  1,  1, 0,  0},
+	{  2,  2, 0,  0},
+	{  3,  3, 0,  0},
+	{  4,  4, 0,  0},
+	{  5,  5, 0,  0},
+	{  6,  6, 0,  0},
+	{  7,  7, 0,  0},
+	{  8,  8, 0,  0},
+	{  9,  9, 0,  0},
+	{ 10, 10, 0,  0},
+	{ 11, 11, 0,  0},
+	{ 12,  5, 1,  0},
+	{ 13,  6, 1,  0},
+	{ 14,  7, 1,  0},
+	{ 15,  8, 1,  0},
+	{ 16,  9, 1,  0},
+	{ 17, 10, 1,  0},
+	{ 18, 11, 1,  0},
+	{ 19, 12, 1,  0},
+	{ 20, 13, 1,  0},
+	{ 21, 14, 1,  0},
+	{ 22, 15, 1,  0},
+	{ 23, 16, 1,  0},
+	{ 24, 17, 1,  0},
+	{ 25, 18, 1,  0},
+	{ 26, 19, 1,  0},
+	{ 27, 20, 1,  0},
+	{ 28, 21, 1,  0},
+	{ 29, 22, 1,  0},
+	{ 30, 23, 1,  0},
+	{ 31, 24, 1,  0},
+	{ 32, 25, 1,  0},
+	{ 33, 26, 1,  0},
+	{ 34, 27, 1,  0},
+	{ 35, 28, 1,  0},
+	{ 36, 29, 1,  0},
+	{ 37, 30, 1,  0},
+	{ 38, 31, 1,  0},
+	{ 39, 32, 1,  0},
+	{ 40, 33, 1,  0},
+	{ 41, 34, 1,  0},
+	{ 42, 35, 1,  0},
+	{ 43, 36, 1,  0},
+	{ 44, 37, 1,  0},
+	{ 45, 38, 1,  0},
+	{ 46, 39, 1,  0},
+	{ 47, 40, 1,  0},
+	{ 48, 41, 1,  0},
+	{ 49, 42, 1,  0},
+	{ 50, 43, 1,  0},
+	{ 51, 44, 1,  0},
+	{ 52, 45, 1,  0},
+	{ 53, 46, 1,  0},
+	{ 54, 47, 1,  0},
+	{ 55, 48, 1,  0},
+	{ 56, 49, 1,  0},
+	{ 57, 50, 1,  0},
+	{ 58, 51, 1,  0},
+	{ 59, 52, 1,  0},
+	{ 60, 53, 1,  0},
+	{ 61, 54, 1,  0},
+	{ 62, 55, 1,  0},
+	{ 63, 56, 1,  0},
+	{ 64, 57, 1,  0},
+	{ 65, 58, 1,  0},
+	{ 66, 40, 1,  1},
+	{ 67, 41, 1,  1},
+	{ 68, 42, 1,  1},
+	{ 69, 43, 1,  1},
+	{ 70, 44, 1,  1},
+	{ 71, 45, 1,  1},
+	{ 72, 46, 1,  1},
+	{ 73, 47, 1,  1},
+	{ 74, 48, 1,  1},
+	{ 75, 49, 1,  1},
+	{ 76, 50, 1,  1},
+	{ 77, 51, 1,  1},
+	{ 78, 52, 1,  1},
+	{ 79, 53, 1,  1},
+	{ 80, 54, 1,  1},
+	{ 81, 55, 1,  1},
+	{ 82, 56, 1,  1},
+	{ 83, 57, 1,  1},
+	{ 84, 58, 1,  1},
+	{ 85, 59, 1,  1},
+};
+
+/*
+ *   iConfiguration          0
+ *     bInterfaceNumber        0
+ *     bAlternateSetting       1
+ *     bNumEndpoints           1
+ *       bEndpointAddress     0x81  EP 1 IN
+ *       bmAttributes            1
+ *         Transfer Type            Isochronous
+ *       wMaxPacketSize     0x1400  3x 1024 bytes
+ *       bInterval               1
+ */
+#define MAX_ISO_BUFS            (8)
+#define ISO_FRAMES_PER_DESC     (8)
+#define ISO_MAX_FRAME_SIZE      (3 * 1024)
+#define ISO_BUFFER_SIZE         (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
+#define MAX_ISOC_ERRORS         20
+
+/* TODO: These should be moved to V4L2 API */
+#define MSI3101_CID_SAMPLING_MODE         ((V4L2_CID_USER_BASE | 0xf000) + 0)
+#define MSI3101_CID_SAMPLING_RATE         ((V4L2_CID_USER_BASE | 0xf000) + 1)
+#define MSI3101_CID_SAMPLING_RESOLUTION   ((V4L2_CID_USER_BASE | 0xf000) + 2)
+#define MSI3101_CID_TUNER_RF              ((V4L2_CID_USER_BASE | 0xf000) + 10)
+#define MSI3101_CID_TUNER_BW              ((V4L2_CID_USER_BASE | 0xf000) + 11)
+#define MSI3101_CID_TUNER_IF              ((V4L2_CID_USER_BASE | 0xf000) + 12)
+#define MSI3101_CID_TUNER_GAIN            ((V4L2_CID_USER_BASE | 0xf000) + 13)
+
+/* intermediate buffers with raw data from the USB device */
+struct msi3101_frame_buf {
+	struct vb2_buffer vb;   /* common v4l buffer stuff -- must be first */
+	struct list_head list;
+};
+
+struct msi3101_state {
+	struct video_device vdev;
+	struct v4l2_device v4l2_dev;
+
+	/* videobuf2 queue and queued buffers list */
+	struct vb2_queue vb_queue;
+	struct list_head queued_bufs;
+	spinlock_t queued_bufs_lock; /* Protects queued_bufs */
+
+	/* Note if taking both locks v4l2_lock must always be locked first! */
+	struct mutex v4l2_lock;      /* Protects everything else */
+	struct mutex vb_queue_lock;  /* Protects vb_queue and capt_file */
+
+	/* Pointer to our usb_device, will be NULL after unplug */
+	struct usb_device *udev; /* Both mutexes most be hold when setting! */
+
+	unsigned int isoc_errors; /* number of contiguous ISOC errors */
+	unsigned int vb_full; /* vb is full and packets dropped */
+
+	struct urb *urbs[MAX_ISO_BUFS];
+	int (*convert_stream) (struct msi3101_state *s, u32 *dst, u8 *src,
+			unsigned int src_len);
+
+	/* Controls */
+	struct v4l2_ctrl_handler ctrl_handler;
+	struct v4l2_ctrl *ctrl_sampling_rate;
+	struct v4l2_ctrl *ctrl_tuner_rf;
+	struct v4l2_ctrl *ctrl_tuner_bw;
+	struct v4l2_ctrl *ctrl_tuner_if;
+	struct v4l2_ctrl *ctrl_tuner_gain;
+
+	u32 next_sample; /* for track lost packets */
+	u32 sample; /* for sample rate calc */
+	unsigned long jiffies;
+	unsigned int sample_ctrl_bit[4];
+};
+
+/* Private functions */
+static struct msi3101_frame_buf *msi3101_get_next_fill_buf(
+		struct msi3101_state *s)
+{
+	unsigned long flags = 0;
+	struct msi3101_frame_buf *buf = NULL;
+
+	spin_lock_irqsave(&s->queued_bufs_lock, flags);
+	if (list_empty(&s->queued_bufs))
+		goto leave;
+
+	buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, list);
+	list_del(&buf->list);
+leave:
+	spin_unlock_irqrestore(&s->queued_bufs_lock, flags);
+	return buf;
+}
+
+/*
+ * +===========================================================================
+ * |   00-1023 | USB packet type '384'
+ * +===========================================================================
+ * |   00-  03 | sequence number of first sample in that USB packet
+ * +---------------------------------------------------------------------------
+ * |   04-  15 | garbage
+ * +---------------------------------------------------------------------------
+ * |   16- 175 | samples
+ * +---------------------------------------------------------------------------
+ * |  176- 179 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * |  180- 339 | samples
+ * +---------------------------------------------------------------------------
+ * |  340- 343 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * |  344- 503 | samples
+ * +---------------------------------------------------------------------------
+ * |  504- 507 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * |  508- 667 | samples
+ * +---------------------------------------------------------------------------
+ * |  668- 671 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * |  672- 831 | samples
+ * +---------------------------------------------------------------------------
+ * |  832- 835 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * |  836- 995 | samples
+ * +---------------------------------------------------------------------------
+ * |  996- 999 | control bits for previous samples
+ * +---------------------------------------------------------------------------
+ * | 1000-1023 | garbage
+ * +---------------------------------------------------------------------------
+ *
+ * Bytes 4 - 7 could have some meaning?
+ *
+ * Control bits for previous samples is 32-bit field, containing 16 x 2-bit
+ * numbers. This results one 2-bit number for 8 samples. It is likely used for
+ * for bit shifting sample by given bits, increasing actual sampling resolution.
+ * Number 2 (0b10) was never seen.
+ *
+ * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes
+ */
+
+/*
+ * Integer to 32-bit IEEE floating point representation routine is taken
+ * from Radeon R600 driver (drivers/gpu/drm/radeon/r600_blit_kms.c).
+ *
+ * TODO: Currently we do conversion here in Kernel, but in future that will
+ * be moved to the libv4l2 library as video format conversions are.
+ */
+#define I2F_FRAC_BITS  23
+#define I2F_MASK ((1 << I2F_FRAC_BITS) - 1)
+
+/*
+ * Converts signed 8-bit integer into 32-bit IEEE floating point
+ * representation.
+ */
+static u32 msi3101_convert_sample_504(struct msi3101_state *s, u16 x)
+{
+	u32 msb, exponent, fraction, sign;
+
+	/* Zero is special */
+	if (!x)
+		return 0;
+
+	/* Negative / positive value */
+	if (x & (1 << 7)) {
+		x = -x;
+		x &= 0x7f; /* result is 7 bit ... + sign */
+		sign = 1 << 31;
+	} else {
+		sign = 0 << 31;
+	}
+
+	/* Get location of the most significant bit */
+	msb = __fls(x);
+
+	fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK;
+	exponent = (127 + msb) << I2F_FRAC_BITS;
+
+	return (fraction + exponent) | sign;
+}
+
+static int msi3101_convert_stream_504(struct msi3101_state *s, u32 *dst,
+		u8 *src, unsigned int src_len)
+{
+	int i, j, i_max, dst_len = 0;
+	u16 sample[2];
+	u32 sample_num[3];
+
+	/* There could be 1-3 1024 bytes URB frames */
+	i_max = src_len / 1024;
+
+	for (i = 0; i < i_max; i++) {
+		sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0;
+		if (i == 0 && s->next_sample != sample_num[0]) {
+			dev_dbg_ratelimited(&s->udev->dev,
+					"%d samples lost, %d %08x:%08x\n",
+					sample_num[0] - s->next_sample,
+					src_len, s->next_sample, sample_num[0]);
+		}
+
+		/*
+		 * Dump all unknown 'garbage' data - maybe we will discover
+		 * someday if there is something rational...
+		 */
+		dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]);
+
+		src += 16;
+		for (j = 0; j < 1008; j += 2) {
+			sample[0] = src[j + 0];
+			sample[1] = src[j + 1];
+
+			*dst++ = msi3101_convert_sample_504(s, sample[0]);
+			*dst++ = msi3101_convert_sample_504(s, sample[1]);
+		}
+		/* 504 x I+Q 32bit float samples */
+		dst_len += 504 * 2 * 4;
+		src += 1008;
+	}
+
+	/* calculate samping rate and output it in 10 seconds intervals */
+	if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) {
+		unsigned long jiffies_now = jiffies;
+		unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies);
+		unsigned int samples = sample_num[i_max - 1] - s->sample;
+		s->jiffies = jiffies_now;
+		s->sample = sample_num[i_max - 1];
+		dev_dbg(&s->udev->dev,
+				"slen=%d samples=%u msecs=%lu sampling rate=%lu\n",
+				src_len, samples, msecs,
+				samples * 1000UL / msecs);
+	}
+
+	/* next sample (sample = sample + i * 504) */
+	s->next_sample = sample_num[i_max - 1] + 504;
+
+	return dst_len;
+}
+
+/*
+ * Converts signed ~10+2-bit integer into 32-bit IEEE floating point
+ * representation.
+ */
+static u32 msi3101_convert_sample_384(struct msi3101_state *s, u16 x, int shift)
+{
+	u32 msb, exponent, fraction, sign;
+	s->sample_ctrl_bit[shift]++;
+
+	/* Zero is special */
+	if (!x)
+		return 0;
+
+	if (shift == 3)
+		shift =	2;
+
+	/* Convert 10-bit two's complement to 12-bit */
+	if (x & (1 << 9)) {
+		x |= ~0U << 10; /* set all the rest bits to one */
+		x <<= shift;
+		x = -x;
+		x &= 0x7ff; /* result is 11 bit ... + sign */
+		sign = 1 << 31;
+	} else {
+		x <<= shift;
+		sign = 0 << 31;
+	}
+
+	/* Get location of the most significant bit */
+	msb = __fls(x);
+
+	fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK;
+	exponent = (127 + msb) << I2F_FRAC_BITS;
+
+	return (fraction + exponent) | sign;
+}
+
+static int msi3101_convert_stream_384(struct msi3101_state *s, u32 *dst,
+		u8 *src, unsigned int src_len)
+{
+	int i, j, k, l, i_max, dst_len = 0;
+	u16 sample[4];
+	u32 bits;
+	u32 sample_num[3];
+
+	/* There could be 1-3 1024 bytes URB frames */
+	i_max = src_len / 1024;
+	for (i = 0; i < i_max; i++) {
+		sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0;
+		if (i == 0 && s->next_sample != sample_num[0]) {
+			dev_dbg_ratelimited(&s->udev->dev,
+					"%d samples lost, %d %08x:%08x\n",
+					sample_num[0] - s->next_sample,
+					src_len, s->next_sample, sample_num[0]);
+		}
+
+		/*
+		 * Dump all unknown 'garbage' data - maybe we will discover
+		 * someday if there is something rational...
+		 */
+		dev_dbg_ratelimited(&s->udev->dev,
+				"%*ph  %*ph\n", 12, &src[4], 24, &src[1000]);
+
+		src += 16;
+		for (j = 0; j < 6; j++) {
+			bits = src[160 + 3] << 24 | src[160 + 2] << 16 | src[160 + 1] << 8 | src[160 + 0] << 0;
+			for (k = 0; k < 16; k++) {
+				for (l = 0; l < 10; l += 5) {
+					sample[0] = (src[l + 0] & 0xff) >> 0 | (src[l + 1] & 0x03) << 8;
+					sample[1] = (src[l + 1] & 0xfc) >> 2 | (src[l + 2] & 0x0f) << 6;
+					sample[2] = (src[l + 2] & 0xf0) >> 4 | (src[l + 3] & 0x3f) << 4;
+					sample[3] = (src[l + 3] & 0xc0) >> 6 | (src[l + 4] & 0xff) << 2;
+
+					*dst++ = msi3101_convert_sample_384(s, sample[0], (bits >> (2 * k)) & 0x3);
+					*dst++ = msi3101_convert_sample_384(s, sample[1], (bits >> (2 * k)) & 0x3);
+					*dst++ = msi3101_convert_sample_384(s, sample[2], (bits >> (2 * k)) & 0x3);
+					*dst++ = msi3101_convert_sample_384(s, sample[3], (bits >> (2 * k)) & 0x3);
+				}
+				src += 10;
+			}
+			dev_dbg_ratelimited(&s->udev->dev,
+					"sample control bits %08x\n", bits);
+			src += 4;
+		}
+		/* 384 x I+Q 32bit float samples */
+		dst_len += 384 * 2 * 4;
+		src += 24;
+	}
+
+	/* calculate samping rate and output it in 10 seconds intervals */
+	if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) {
+		unsigned long jiffies_now = jiffies;
+		unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies);
+		unsigned int samples = sample_num[i_max - 1] - s->sample;
+		s->jiffies = jiffies_now;
+		s->sample = sample_num[i_max - 1];
+		dev_dbg(&s->udev->dev,
+				"slen=%d samples=%u msecs=%lu sampling rate=%lu bits=%d.%d.%d.%d\n",
+				src_len, samples, msecs,
+				samples * 1000UL / msecs,
+				s->sample_ctrl_bit[0], s->sample_ctrl_bit[1],
+				s->sample_ctrl_bit[2], s->sample_ctrl_bit[3]);
+	}
+
+	/* next sample (sample = sample + i * 384) */
+	s->next_sample = sample_num[i_max - 1] + 384;
+
+	return dst_len;
+}
+
+/*
+ * Converts signed 12-bit integer into 32-bit IEEE floating point
+ * representation.
+ */
+static u32 msi3101_convert_sample_336(struct msi3101_state *s, u16 x)
+{
+	u32 msb, exponent, fraction, sign;
+
+	/* Zero is special */
+	if (!x)
+		return 0;
+
+	/* Negative / positive value */
+	if (x & (1 << 11)) {
+		x = -x;
+		x &= 0x7ff; /* result is 11 bit ... + sign */
+		sign = 1 << 31;
+	} else {
+		sign = 0 << 31;
+	}
+
+	/* Get location of the most significant bit */
+	msb = __fls(x);
+
+	fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK;
+	exponent = (127 + msb) << I2F_FRAC_BITS;
+
+	return (fraction + exponent) | sign;
+}
+
+static int msi3101_convert_stream_336(struct msi3101_state *s, u32 *dst,
+		u8 *src, unsigned int src_len)
+{
+	int i, j, i_max, dst_len = 0;
+	u16 sample[2];
+	u32 sample_num[3];
+
+	/* There could be 1-3 1024 bytes URB frames */
+	i_max = src_len / 1024;
+
+	for (i = 0; i < i_max; i++) {
+		sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0;
+		if (i == 0 && s->next_sample != sample_num[0]) {
+			dev_dbg_ratelimited(&s->udev->dev,
+					"%d samples lost, %d %08x:%08x\n",
+					sample_num[0] - s->next_sample,
+					src_len, s->next_sample, sample_num[0]);
+		}
+
+		/*
+		 * Dump all unknown 'garbage' data - maybe we will discover
+		 * someday if there is something rational...
+		 */
+		dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]);
+
+		src += 16;
+		for (j = 0; j < 1008; j += 3) {
+			sample[0] = (src[j + 0] & 0xff) >> 0 | (src[j + 1] & 0x0f) << 8;
+			sample[1] = (src[j + 1] & 0xf0) >> 4 | (src[j + 2] & 0xff) << 4;
+
+			*dst++ = msi3101_convert_sample_336(s, sample[0]);
+			*dst++ = msi3101_convert_sample_336(s, sample[1]);
+		}
+		/* 336 x I+Q 32bit float samples */
+		dst_len += 336 * 2 * 4;
+		src += 1008;
+	}
+
+	/* calculate samping rate and output it in 10 seconds intervals */
+	if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) {
+		unsigned long jiffies_now = jiffies;
+		unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies);
+		unsigned int samples = sample_num[i_max - 1] - s->sample;
+		s->jiffies = jiffies_now;
+		s->sample = sample_num[i_max - 1];
+		dev_dbg(&s->udev->dev,
+				"slen=%d samples=%u msecs=%lu sampling rate=%lu\n",
+				src_len, samples, msecs,
+				samples * 1000UL / msecs);
+	}
+
+	/* next sample (sample = sample + i * 336) */
+	s->next_sample = sample_num[i_max - 1] + 336;
+
+	return dst_len;
+}
+
+/*
+ * Converts signed 14-bit integer into 32-bit IEEE floating point
+ * representation.
+ */
+static u32 msi3101_convert_sample_252(struct msi3101_state *s, u16 x)
+{
+	u32 msb, exponent, fraction, sign;
+
+	/* Zero is special */
+	if (!x)
+		return 0;
+
+	/* Negative / positive value */
+	if (x & (1 << 13)) {
+		x = -x;
+		x &= 0x1fff; /* result is 13 bit ... + sign */
+		sign = 1 << 31;
+	} else {
+		sign = 0 << 31;
+	}
+
+	/* Get location of the most significant bit */
+	msb = __fls(x);
+
+	fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK;
+	exponent = (127 + msb) << I2F_FRAC_BITS;
+
+	return (fraction + exponent) | sign;
+}
+
+static int msi3101_convert_stream_252(struct msi3101_state *s, u32 *dst,
+		u8 *src, unsigned int src_len)
+{
+	int i, j, i_max, dst_len = 0;
+	u16 sample[2];
+	u32 sample_num[3];
+
+	/* There could be 1-3 1024 bytes URB frames */
+	i_max = src_len / 1024;
+
+	for (i = 0; i < i_max; i++) {
+		sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0;
+		if (i == 0 && s->next_sample != sample_num[0]) {
+			dev_dbg_ratelimited(&s->udev->dev,
+					"%d samples lost, %d %08x:%08x\n",
+					sample_num[0] - s->next_sample,
+					src_len, s->next_sample, sample_num[0]);
+		}
+
+		/*
+		 * Dump all unknown 'garbage' data - maybe we will discover
+		 * someday if there is something rational...
+		 */
+		dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]);
+
+		src += 16;
+		for (j = 0; j < 1008; j += 4) {
+			sample[0] = src[j + 0] >> 0 | src[j + 1] << 8;
+			sample[1] = src[j + 2] >> 0 | src[j + 3] << 8;
+
+			*dst++ = msi3101_convert_sample_252(s, sample[0]);
+			*dst++ = msi3101_convert_sample_252(s, sample[1]);
+		}
+		/* 252 x I+Q 32bit float samples */
+		dst_len += 252 * 2 * 4;
+		src += 1008;
+	}
+
+	/* calculate samping rate and output it in 10 seconds intervals */
+	if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) {
+		unsigned long jiffies_now = jiffies;
+		unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies);
+		unsigned int samples = sample_num[i_max - 1] - s->sample;
+		s->jiffies = jiffies_now;
+		s->sample = sample_num[i_max - 1];
+		dev_dbg(&s->udev->dev,
+				"slen=%d samples=%u msecs=%lu sampling rate=%lu\n",
+				src_len, samples, msecs,
+				samples * 1000UL / msecs);
+	}
+
+	/* next sample (sample = sample + i * 252) */
+	s->next_sample = sample_num[i_max - 1] + 252;
+
+	return dst_len;
+}
+
+/*
+ * This gets called for the Isochronous pipe (stream). This is done in interrupt
+ * time, so it has to be fast, not crash, and not stall. Neat.
+ */
+static void msi3101_isoc_handler(struct urb *urb)