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:
 "The first part of the media updates for Kernel 3.7.

  This series contain:

   - A major tree renaming patch series: now, drivers are organized
     internally by their used bus, instead of by V4L2 and/or DVB API,
     providing a cleaner driver location for hybrid drivers that
     implement both APIs, and allowing to cleanup the Kconfig items and
     make them more intuitive for the end user;

   - Media Kernel developers are typically very lazy with their duties
     of keeping the MAINTAINERS entries for their drivers updated.  As
     now the tree is more organized, we're doing an effort to add/update
     those entries for the drivers that aren't currently orphan;

   - Several DVB USB drivers got moved to a new DVB USB v2 core; the new
     core fixes several bugs (as the existing one that got bitroted).
     Now, suspend/resume finally started to work fine (at least with
     some devices - we should expect more work with regards to it);

   - added multistream support for DVB-T2, and unified the API for
     DVB-S2 and ISDB-S.  Backward binary support is preserved;

   - as usual, a few new drivers, some V4L2 core improvements and lots
     of drivers improvements and fixes.

  There are some points to notice on this series:

   1) you should expect a trivial merge conflict on your tree, with the
      removal of Documentation/feature-removal-schedule.txt: this series
      would be adding two additional entries there.  I opted to not
      rebase it due to this recent change;

   2) With regards to the PCTV 520e udev-related breakage, I opted to
      fix it in a way that the patches can be backported to 3.5 even
      without your firmware fix patch.  This way, Greg doesn't need to
      rush backporting your patch (as there are still the firmware cache
      and firmware path customization issues to be addressed there).

      I'll send later a patch (likely after the end of the merge window)
      reverting the rest of the DRX-K async firmware request, fully
      restoring its original behaviour to allow media drivers to
      initialize everything serialized as before for 3.7 and upper.

   3) I'm planning to work on this weekend to test the DMABUF patches
      for V4L2.  The patches are on my queue for several Kernel cycles,
      but, up to now, there is/was no way to test the series locally.

      I have some concerns about this particular changeset with regards
      to security issues, and with regards to the replacement of the old
      VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
      GPU drivers change.  The Overlay API allows direct PCI2PCI
      transfers from a media capture card into the GPU framebuffer, but
      its API is crappy.  Also, the only existing X11 driver that
      implements it requires a XV extension that is not available
      anymore on modern drivers.  The DMABUF can do the same thing, but
      with it is promising to be a properly-designed API.  If I can
      successfully test this series and be happy with it, I should be
      asking you to pull them next week."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
  em28xx: regression fix: use DRX-K sync firmware requests on em28xx
  drxk: allow loading firmware synchrousnously
  em28xx: Make all em28xx extensions to be initialized asynchronously
  [media] tda18271: properly report read errors in tda18271_get_id
  [media] tda18271: delay IR & RF calibration until init() if delay_cal is set
  [media] MAINTAINERS: add Michael Krufky as tda827x maintainer
  [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
  [media] MAINTAINERS: add Michael Krufky as cxusb maintainer
  [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
  [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
  [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
  [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
  [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
  [media] exynos-gsc: Add missing static storage class specifiers
  [media] exynos-gsc: Remove <linux/version.h> header file inclusion
  [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
  [media] s5p-tv: Fix potential NULL pointer dereference error
  [media] s5k6aa: Fix possible NULL pointer dereference
  ...

1 files changed, 555 insertions, 0 deletions

diff --git a/drivers/media/usb/gspca/jl2005bcd.c b/drivers/media/usb/gspca/jl2005bcd.c
new file mode 100644
index 000000000000..62ba80d9b998
--- /dev/null
+++ b/drivers/media/usb/gspca/jl2005bcd.c
@@ -0,0 +1,555 @@
+/*
+ * Jeilin JL2005B/C/D library
+ *
+ * Copyright (C) 2011 Theodore Kilgore <kilgota@auburn.edu>
+ *
+ * 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
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define MODULE_NAME "jl2005bcd"
+
+#include <linux/workqueue.h>
+#include <linux/slab.h>
+#include "gspca.h"
+
+
+MODULE_AUTHOR("Theodore Kilgore <kilgota@auburn.edu>");
+MODULE_DESCRIPTION("JL2005B/C/D USB Camera Driver");
+MODULE_LICENSE("GPL");
+
+/* Default timeouts, in ms */
+#define JL2005C_CMD_TIMEOUT 500
+#define JL2005C_DATA_TIMEOUT 1000
+
+/* Maximum transfer size to use. */
+#define JL2005C_MAX_TRANSFER 0x200
+#define FRAME_HEADER_LEN 16
+
+
+/* specific webcam descriptor */
+struct sd {
+	struct gspca_dev gspca_dev;  /* !! must be the first item */
+	unsigned char firmware_id[6];
+	const struct v4l2_pix_format *cap_mode;
+	/* Driver stuff */
+	struct work_struct work_struct;
+	struct workqueue_struct *work_thread;
+	u8 frame_brightness;
+	int block_size;	/* block size of camera */
+	int vga;	/* 1 if vga cam, 0 if cif cam */
+};
+
+
+/* Camera has two resolution settings. What they are depends on model. */
+static const struct v4l2_pix_format cif_mode[] = {
+	{176, 144, V4L2_PIX_FMT_JL2005BCD, V4L2_FIELD_NONE,
+		.bytesperline = 176,
+		.sizeimage = 176 * 144,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0},
+	{352, 288, V4L2_PIX_FMT_JL2005BCD, V4L2_FIELD_NONE,
+		.bytesperline = 352,
+		.sizeimage = 352 * 288,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0},
+};
+
+static const struct v4l2_pix_format vga_mode[] = {
+	{320, 240, V4L2_PIX_FMT_JL2005BCD, V4L2_FIELD_NONE,
+		.bytesperline = 320,
+		.sizeimage = 320 * 240,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0},
+	{640, 480, V4L2_PIX_FMT_JL2005BCD, V4L2_FIELD_NONE,
+		.bytesperline = 640,
+		.sizeimage = 640 * 480,
+		.colorspace = V4L2_COLORSPACE_SRGB,
+		.priv = 0},
+};
+
+/*
+ * cam uses endpoint 0x03 to send commands, 0x84 for read commands,
+ * and 0x82 for bulk data transfer.
+ */
+
+/* All commands are two bytes only */
+static int jl2005c_write2(struct gspca_dev *gspca_dev, unsigned char *command)
+{
+	int retval;
+
+	memcpy(gspca_dev->usb_buf, command, 2);
+	retval = usb_bulk_msg(gspca_dev->dev,
+			usb_sndbulkpipe(gspca_dev->dev, 3),
+			gspca_dev->usb_buf, 2, NULL, 500);
+	if (retval < 0)
+		pr_err("command write [%02x] error %d\n",
+		       gspca_dev->usb_buf[0], retval);
+	return retval;
+}
+
+/* Response to a command is one byte in usb_buf[0], only if requested. */
+static int jl2005c_read1(struct gspca_dev *gspca_dev)
+{
+	int retval;
+
+	retval = usb_bulk_msg(gspca_dev->dev,
+				usb_rcvbulkpipe(gspca_dev->dev, 0x84),
+				gspca_dev->usb_buf, 1, NULL, 500);
+	if (retval < 0)
+		pr_err("read command [0x%02x] error %d\n",
+		       gspca_dev->usb_buf[0], retval);
+	return retval;
+}
+
+/* Response appears in gspca_dev->usb_buf[0] */
+static int jl2005c_read_reg(struct gspca_dev *gspca_dev, unsigned char reg)
+{
+	int retval;
+
+	static u8 instruction[2] = {0x95, 0x00};
+	/* put register to read in byte 1 */
+	instruction[1] = reg;
+	/* Send the read request */
+	retval = jl2005c_write2(gspca_dev, instruction);
+	if (retval < 0)
+		return retval;
+	retval = jl2005c_read1(gspca_dev);
+
+	return retval;
+}
+
+static int jl2005c_start_new_frame(struct gspca_dev *gspca_dev)
+{
+	int i;
+	int retval;
+	int frame_brightness = 0;
+
+	static u8 instruction[2] = {0x7f, 0x01};
+
+	retval = jl2005c_write2(gspca_dev, instruction);
+	if (retval < 0)
+		return retval;
+
+	i = 0;
+	while (i < 20 && !frame_brightness) {
+		/* If we tried 20 times, give up. */
+		retval = jl2005c_read_reg(gspca_dev, 0x7e);
+		if (retval < 0)
+			return retval;
+		frame_brightness = gspca_dev->usb_buf[0];
+		retval = jl2005c_read_reg(gspca_dev, 0x7d);
+		if (retval < 0)
+			return retval;
+		i++;
+	}
+	PDEBUG(D_FRAM, "frame_brightness is 0x%02x", gspca_dev->usb_buf[0]);
+	return retval;
+}
+
+static int jl2005c_write_reg(struct gspca_dev *gspca_dev, unsigned char reg,
+						    unsigned char value)
+{
+	int retval;
+	u8 instruction[2];
+
+	instruction[0] = reg;
+	instruction[1] = value;
+
+	retval = jl2005c_write2(gspca_dev, instruction);
+	if (retval < 0)
+			return retval;
+
+	return retval;
+}
+
+static int jl2005c_get_firmware_id(struct gspca_dev *gspca_dev)
+{
+	struct sd *sd = (struct sd *)gspca_dev;
+	int i = 0;
+	int retval = -1;
+	unsigned char regs_to_read[] = {0x57, 0x02, 0x03, 0x5d, 0x5e, 0x5f};
+
+	PDEBUG(D_PROBE, "Running jl2005c_get_firmware_id");
+	/* Read the first ID byte once for warmup */
+	retval = jl2005c_read_reg(gspca_dev, regs_to_read[0]);
+	PDEBUG(D_PROBE, "response is %02x", gspca_dev->usb_buf[0]);
+	if (retval < 0)
+		return retval;
+	/* Now actually get the ID string */
+	for (i = 0; i < 6; i++) {
+		retval = jl2005c_read_reg(gspca_dev, regs_to_read[i]);
+		if (retval < 0)
+			return retval;
+		sd->firmware_id[i] = gspca_dev->usb_buf[0];
+	}
+	PDEBUG(D_PROBE, "firmware ID is %02x%02x%02x%02x%02x%02x",
+						sd->firmware_id[0],
+						sd->firmware_id[1],
+						sd->firmware_id[2],
+						sd->firmware_id[3],
+						sd->firmware_id[4],
+						sd->firmware_id[5]);
+	return 0;
+}
+
+static int jl2005c_stream_start_vga_lg
+		    (struct gspca_dev *gspca_dev)
+{
+	int i;
+	int retval = -1;
+	static u8 instruction[][2] = {
+		{0x05, 0x00},
+		{0x7c, 0x00},
+		{0x7d, 0x18},
+		{0x02, 0x00},
+		{0x01, 0x00},
+		{0x04, 0x52},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(instruction); i++) {
+		msleep(60);
+		retval = jl2005c_write2(gspca_dev, instruction[i]);
+		if (retval < 0)
+			return retval;
+	}
+	msleep(60);
+	return retval;
+}
+
+static int jl2005c_stream_start_vga_small(struct gspca_dev *gspca_dev)
+{
+	int i;
+	int retval = -1;
+	static u8 instruction[][2] = {
+		{0x06, 0x00},
+		{0x7c, 0x00},
+		{0x7d, 0x1a},
+		{0x02, 0x00},
+		{0x01, 0x00},
+		{0x04, 0x52},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(instruction); i++) {
+		msleep(60);
+		retval = jl2005c_write2(gspca_dev, instruction[i]);
+		if (retval < 0)
+			return retval;
+	}
+	msleep(60);
+	return retval;
+}
+
+static int jl2005c_stream_start_cif_lg(struct gspca_dev *gspca_dev)
+{
+	int i;
+	int retval = -1;
+	static u8 instruction[][2] = {
+		{0x05, 0x00},
+		{0x7c, 0x00},
+		{0x7d, 0x30},
+		{0x02, 0x00},
+		{0x01, 0x00},
+		{0x04, 0x42},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(instruction); i++) {
+		msleep(60);
+		retval = jl2005c_write2(gspca_dev, instruction[i]);
+		if (retval < 0)
+			return retval;
+	}
+	msleep(60);
+	return retval;
+}
+
+static int jl2005c_stream_start_cif_small(struct gspca_dev *gspca_dev)
+{
+	int i;
+	int retval = -1;
+	static u8 instruction[][2] = {
+		{0x06, 0x00},
+		{0x7c, 0x00},
+		{0x7d, 0x32},
+		{0x02, 0x00},
+		{0x01, 0x00},
+		{0x04, 0x42},
+	};
+
+	for (i = 0; i < ARRAY_SIZE(instruction); i++) {
+		msleep(60);
+		retval = jl2005c_write2(gspca_dev, instruction[i]);
+		if (retval < 0)
+			return retval;
+	}
+	msleep(60);
+	return retval;
+}
+
+
+static int jl2005c_stop(struct gspca_dev *gspca_dev)
+{
+	int retval;
+
+	retval = jl2005c_write_reg(gspca_dev, 0x07, 0x00);
+	return retval;
+}
+
+/*
+ * This function is called as a workqueue function and runs whenever the camera
+ * is streaming data. Because it is a workqueue function it is allowed to sleep
+ * so we can use synchronous USB calls. To avoid possible collisions with other
+ * threads attempting to use gspca_dev->usb_buf we take the usb_lock when
+ * performing USB operations using it. In practice we don't really need this
+ * as the camera doesn't provide any controls.
+ */
+static void jl2005c_dostream(struct work_struct *work)
+{
+	struct sd *dev = container_of(work, struct sd, work_struct);
+	struct gspca_dev *gspca_dev = &dev->gspca_dev;
+	int bytes_left = 0; /* bytes remaining in current frame. */
+	int data_len;   /* size to use for the next read. */
+	int header_read = 0;
+	unsigned char header_sig[2] = {0x4a, 0x4c};
+	int act_len;
+	int packet_type;
+	int ret;
+	u8 *buffer;
+
+	buffer = kmalloc(JL2005C_MAX_TRANSFER, GFP_KERNEL | GFP_DMA);
+	if (!buffer) {
+		pr_err("Couldn't allocate USB buffer\n");
+		goto quit_stream;
+	}
+
+	while (gspca_dev->present && gspca_dev->streaming) {
+#ifdef CONFIG_PM
+		if (gspca_dev->frozen)
+			break;
+#endif
+		/* Check if this is a new frame. If so, start the frame first */
+		if (!header_read) {
+			mutex_lock(&gspca_dev->usb_lock);
+			ret = jl2005c_start_new_frame(gspca_dev);
+			mutex_unlock(&gspca_dev->usb_lock);
+			if (ret < 0)
+				goto quit_stream;
+			ret = usb_bulk_msg(gspca_dev->dev,
+				usb_rcvbulkpipe(gspca_dev->dev, 0x82),
+				buffer, JL2005C_MAX_TRANSFER, &act_len,
+				JL2005C_DATA_TIMEOUT);
+			PDEBUG(D_PACK,
+				"Got %d bytes out of %d for header",
+					act_len, JL2005C_MAX_TRANSFER);
+			if (ret < 0 || act_len < JL2005C_MAX_TRANSFER)
+				goto quit_stream;
+			/* Check whether we actually got the first blodk */
+			if (memcmp(header_sig, buffer, 2) != 0) {
+				pr_err("First block is not the first block\n");
+				goto quit_stream;
+			}
+			/* total size to fetch is byte 7, times blocksize
+			 * of which we already got act_len */
+			bytes_left = buffer[0x07] * dev->block_size - act_len;
+			PDEBUG(D_PACK, "bytes_left = 0x%x", bytes_left);
+			/* We keep the header. It has other information, too.*/
+			packet_type = FIRST_PACKET;
+			gspca_frame_add(gspca_dev, packet_type,
+					buffer, act_len);
+			header_read = 1;
+		}
+		while (bytes_left > 0 && gspca_dev->present) {
+			data_len = bytes_left > JL2005C_MAX_TRANSFER ?
+				JL2005C_MAX_TRANSFER : bytes_left;
+			ret = usb_bulk_msg(gspca_dev->dev,
+				usb_rcvbulkpipe(gspca_dev->dev, 0x82),
+				buffer, data_len, &act_len,
+				JL2005C_DATA_TIMEOUT);
+			if (ret < 0 || act_len < data_len)
+				goto quit_stream;
+			PDEBUG(D_PACK,
+				"Got %d bytes out of %d for frame",
+						data_len, bytes_left);
+			bytes_left -= data_len;
+			if (bytes_left == 0) {
+				packet_type = LAST_PACKET;
+				header_read = 0;
+			} else
+				packet_type = INTER_PACKET;
+			gspca_frame_add(gspca_dev, packet_type,
+					buffer, data_len);
+		}
+	}
+quit_stream:
+	if (gspca_dev->present) {
+		mutex_lock(&gspca_dev->usb_lock);
+		jl2005c_stop(gspca_dev);
+		mutex_unlock(&gspca_dev->usb_lock);
+	}
+	kfree(buffer);
+}
+
+
+
+
+/* This function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+			const struct usb_device_id *id)
+{
+	struct cam *cam;
+	struct sd *sd = (struct sd *) gspca_dev;
+
+	cam = &gspca_dev->cam;
+	/* We don't use the buffer gspca allocates so make it small. */
+	cam->bulk_size = 64;
+	cam->bulk = 1;
+	/* For the rest, the camera needs to be detected */
+	jl2005c_get_firmware_id(gspca_dev);
+	/* Here are some known firmware IDs
+	 * First some JL2005B cameras
+	 * {0x41, 0x07, 0x04, 0x2c, 0xe8, 0xf2}	Sakar KidzCam
+	 * {0x45, 0x02, 0x08, 0xb9, 0x00, 0xd2}	No-name JL2005B
+	 * JL2005C cameras
+	 * {0x01, 0x0c, 0x16, 0x10, 0xf8, 0xc8}	Argus DC-1512
+	 * {0x12, 0x04, 0x03, 0xc0, 0x00, 0xd8}	ICarly
+	 * {0x86, 0x08, 0x05, 0x02, 0x00, 0xd4}	Jazz
+	 *
+	 * Based upon this scanty evidence, we can detect a CIF camera by
+	 * testing byte 0 for 0x4x.
+	 */
+	if ((sd->firmware_id[0] & 0xf0) == 0x40) {
+		cam->cam_mode	= cif_mode;
+		cam->nmodes	= ARRAY_SIZE(cif_mode);
+		sd->block_size	= 0x80;
+	} else {
+		cam->cam_mode	= vga_mode;
+		cam->nmodes	= ARRAY_SIZE(vga_mode);
+		sd->block_size	= 0x200;
+	}
+
+	INIT_WORK(&sd->work_struct, jl2005c_dostream);
+
+	return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+	return 0;
+}
+
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+
+	struct sd *sd = (struct sd *) gspca_dev;
+	sd->cap_mode = gspca_dev->cam.cam_mode;
+
+	switch (gspca_dev->width) {
+	case 640:
+		PDEBUG(D_STREAM, "Start streaming at vga resolution");
+		jl2005c_stream_start_vga_lg(gspca_dev);
+		break;
+	case 320:
+		PDEBUG(D_STREAM, "Start streaming at qvga resolution");
+		jl2005c_stream_start_vga_small(gspca_dev);
+		break;
+	case 352:
+		PDEBUG(D_STREAM, "Start streaming at cif resolution");
+		jl2005c_stream_start_cif_lg(gspca_dev);
+		break;
+	case 176:
+		PDEBUG(D_STREAM, "Start streaming at qcif resolution");
+		jl2005c_stream_start_cif_small(gspca_dev);
+		break;
+	default:
+		pr_err("Unknown resolution specified\n");
+		return -1;
+	}
+
+	/* Start the workqueue function to do the streaming */
+	sd->work_thread = create_singlethread_workqueue(MODULE_NAME);
+	queue_work(sd->work_thread, &sd->work_struct);
+
+	return 0;
+}
+
+/* called on streamoff with alt==0 and on disconnect */
+/* the usb_lock is held at entry - restore on exit */
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+	struct sd *dev = (struct sd *) gspca_dev;
+
+	/* wait for the work queue to terminate */
+	mutex_unlock(&gspca_dev->usb_lock);
+	/* This waits for sq905c_dostream to finish */
+	destroy_workqueue(dev->work_thread);
+	dev->work_thread = NULL;
+	mutex_lock(&gspca_dev->usb_lock);
+}
+
+
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+	.name = MODULE_NAME,
+	.config = sd_config,
+	.init = sd_init,
+	.start = sd_start,
+	.stop0 = sd_stop0,
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+	{USB_DEVICE(0x0979, 0x0227)},
+	{}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+				const struct usb_device_id *id)
+{
+	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
+				THIS_MODULE);
+}
+
+static struct usb_driver sd_driver = {
+	.name = MODULE_NAME,
+	.id_table = device_table,
+	.probe = sd_probe,
+	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+	.reset_resume = gspca_resume,
+#endif
+};
+
+/* -- module insert / remove -- */
+static int __init sd_mod_init(void)
+{
+	int ret;
+
+	ret = usb_register(&sd_driver);
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+static void __exit sd_mod_exit(void)
+{
+	usb_deregister(&sd_driver);
+}
+
+module_init(sd_mod_init);
+module_exit(sd_mod_exit);