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, 487 insertions, 0 deletions

diff --git a/drivers/media/platform/s5p-tv/mixer_drv.c b/drivers/media/platform/s5p-tv/mixer_drv.c
new file mode 100644
index 000000000000..ca0f29717448
--- /dev/null
+++ b/drivers/media/platform/s5p-tv/mixer_drv.c
@@ -0,0 +1,487 @@
+/*
+ * Samsung TV Mixer driver
+ *
+ * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+ *
+ * Tomasz Stanislawski, <t.stanislaws@samsung.com>
+ *
+ * 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 Foundiation. either version 2 of the License,
+ * or (at your option) any later version
+ */
+
+#include "mixer.h"
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/fb.h>
+#include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/clk.h>
+
+MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>");
+MODULE_DESCRIPTION("Samsung MIXER");
+MODULE_LICENSE("GPL");
+
+/* --------- DRIVER PARAMETERS ---------- */
+
+static struct mxr_output_conf mxr_output_conf[] = {
+	{
+		.output_name = "S5P HDMI connector",
+		.module_name = "s5p-hdmi",
+		.cookie = 1,
+	},
+	{
+		.output_name = "S5P SDO connector",
+		.module_name = "s5p-sdo",
+		.cookie = 0,
+	},
+};
+
+void mxr_get_mbus_fmt(struct mxr_device *mdev,
+	struct v4l2_mbus_framefmt *mbus_fmt)
+{
+	struct v4l2_subdev *sd;
+	int ret;
+
+	mutex_lock(&mdev->mutex);
+	sd = to_outsd(mdev);
+	ret = v4l2_subdev_call(sd, video, g_mbus_fmt, mbus_fmt);
+	WARN(ret, "failed to get mbus_fmt for output %s\n", sd->name);
+	mutex_unlock(&mdev->mutex);
+}
+
+void mxr_streamer_get(struct mxr_device *mdev)
+{
+	mutex_lock(&mdev->mutex);
+	++mdev->n_streamer;
+	mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
+	if (mdev->n_streamer == 1) {
+		struct v4l2_subdev *sd = to_outsd(mdev);
+		struct v4l2_mbus_framefmt mbus_fmt;
+		struct mxr_resources *res = &mdev->res;
+		int ret;
+
+		if (to_output(mdev)->cookie == 0)
+			clk_set_parent(res->sclk_mixer, res->sclk_dac);
+		else
+			clk_set_parent(res->sclk_mixer, res->sclk_hdmi);
+		mxr_reg_s_output(mdev, to_output(mdev)->cookie);
+
+		ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mbus_fmt);
+		WARN(ret, "failed to get mbus_fmt for output %s\n", sd->name);
+		ret = v4l2_subdev_call(sd, video, s_stream, 1);
+		WARN(ret, "starting stream failed for output %s\n", sd->name);
+
+		mxr_reg_set_mbus_fmt(mdev, &mbus_fmt);
+		mxr_reg_streamon(mdev);
+		ret = mxr_reg_wait4vsync(mdev);
+		WARN(ret, "failed to get vsync (%d) from output\n", ret);
+	}
+	mutex_unlock(&mdev->mutex);
+	mxr_reg_dump(mdev);
+	/* FIXME: what to do when streaming fails? */
+}
+
+void mxr_streamer_put(struct mxr_device *mdev)
+{
+	mutex_lock(&mdev->mutex);
+	--mdev->n_streamer;
+	mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
+	if (mdev->n_streamer == 0) {
+		int ret;
+		struct v4l2_subdev *sd = to_outsd(mdev);
+
+		mxr_reg_streamoff(mdev);
+		/* vsync applies Mixer setup */
+		ret = mxr_reg_wait4vsync(mdev);
+		WARN(ret, "failed to get vsync (%d) from output\n", ret);
+		ret = v4l2_subdev_call(sd, video, s_stream, 0);
+		WARN(ret, "stopping stream failed for output %s\n", sd->name);
+	}
+	WARN(mdev->n_streamer < 0, "negative number of streamers (%d)\n",
+		mdev->n_streamer);
+	mutex_unlock(&mdev->mutex);
+	mxr_reg_dump(mdev);
+}
+
+void mxr_output_get(struct mxr_device *mdev)
+{
+	mutex_lock(&mdev->mutex);
+	++mdev->n_output;
+	mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_output);
+	/* turn on auxiliary driver */
+	if (mdev->n_output == 1)
+		v4l2_subdev_call(to_outsd(mdev), core, s_power, 1);
+	mutex_unlock(&mdev->mutex);
+}
+
+void mxr_output_put(struct mxr_device *mdev)
+{
+	mutex_lock(&mdev->mutex);
+	--mdev->n_output;
+	mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_output);
+	/* turn on auxiliary driver */
+	if (mdev->n_output == 0)
+		v4l2_subdev_call(to_outsd(mdev), core, s_power, 0);
+	WARN(mdev->n_output < 0, "negative number of output users (%d)\n",
+		mdev->n_output);
+	mutex_unlock(&mdev->mutex);
+}
+
+int mxr_power_get(struct mxr_device *mdev)
+{
+	int ret = pm_runtime_get_sync(mdev->dev);
+
+	/* returning 1 means that power is already enabled,
+	 * so zero success be returned */
+	if (IS_ERR_VALUE(ret))
+		return ret;
+	return 0;
+}
+
+void mxr_power_put(struct mxr_device *mdev)
+{
+	pm_runtime_put_sync(mdev->dev);
+}
+
+/* --------- RESOURCE MANAGEMENT -------------*/
+
+static int __devinit mxr_acquire_plat_resources(struct mxr_device *mdev,
+	struct platform_device *pdev)
+{
+	struct resource *res;
+	int ret;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mxr");
+	if (res == NULL) {
+		mxr_err(mdev, "get memory resource failed.\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+
+	mdev->res.mxr_regs = ioremap(res->start, resource_size(res));
+	if (mdev->res.mxr_regs == NULL) {
+		mxr_err(mdev, "register mapping failed.\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vp");
+	if (res == NULL) {
+		mxr_err(mdev, "get memory resource failed.\n");
+		ret = -ENXIO;
+		goto fail_mxr_regs;
+	}
+
+	mdev->res.vp_regs = ioremap(res->start, resource_size(res));
+	if (mdev->res.vp_regs == NULL) {
+		mxr_err(mdev, "register mapping failed.\n");
+		ret = -ENXIO;
+		goto fail_mxr_regs;
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "irq");
+	if (res == NULL) {
+		mxr_err(mdev, "get interrupt resource failed.\n");
+		ret = -ENXIO;
+		goto fail_vp_regs;
+	}
+
+	ret = request_irq(res->start, mxr_irq_handler, 0, "s5p-mixer", mdev);
+	if (ret) {
+		mxr_err(mdev, "request interrupt failed.\n");
+		goto fail_vp_regs;
+	}
+	mdev->res.irq = res->start;
+
+	return 0;
+
+fail_vp_regs:
+	iounmap(mdev->res.vp_regs);
+
+fail_mxr_regs:
+	iounmap(mdev->res.mxr_regs);
+
+fail:
+	return ret;
+}
+
+static void mxr_release_plat_resources(struct mxr_device *mdev)
+{
+	free_irq(mdev->res.irq, mdev);
+	iounmap(mdev->res.vp_regs);
+	iounmap(mdev->res.mxr_regs);
+}
+
+static void mxr_release_clocks(struct mxr_device *mdev)
+{
+	struct mxr_resources *res = &mdev->res;
+
+	if (!IS_ERR_OR_NULL(res->sclk_dac))
+		clk_put(res->sclk_dac);
+	if (!IS_ERR_OR_NULL(res->sclk_hdmi))
+		clk_put(res->sclk_hdmi);
+	if (!IS_ERR_OR_NULL(res->sclk_mixer))
+		clk_put(res->sclk_mixer);
+	if (!IS_ERR_OR_NULL(res->vp))
+		clk_put(res->vp);
+	if (!IS_ERR_OR_NULL(res->mixer))
+		clk_put(res->mixer);
+}
+
+static int mxr_acquire_clocks(struct mxr_device *mdev)
+{
+	struct mxr_resources *res = &mdev->res;
+	struct device *dev = mdev->dev;
+
+	res->mixer = clk_get(dev, "mixer");
+	if (IS_ERR_OR_NULL(res->mixer)) {
+		mxr_err(mdev, "failed to get clock 'mixer'\n");
+		goto fail;
+	}
+	res->vp = clk_get(dev, "vp");
+	if (IS_ERR_OR_NULL(res->vp)) {
+		mxr_err(mdev, "failed to get clock 'vp'\n");
+		goto fail;
+	}
+	res->sclk_mixer = clk_get(dev, "sclk_mixer");
+	if (IS_ERR_OR_NULL(res->sclk_mixer)) {
+		mxr_err(mdev, "failed to get clock 'sclk_mixer'\n");
+		goto fail;
+	}
+	res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
+	if (IS_ERR_OR_NULL(res->sclk_hdmi)) {
+		mxr_err(mdev, "failed to get clock 'sclk_hdmi'\n");
+		goto fail;
+	}
+	res->sclk_dac = clk_get(dev, "sclk_dac");
+	if (IS_ERR_OR_NULL(res->sclk_dac)) {
+		mxr_err(mdev, "failed to get clock 'sclk_dac'\n");
+		goto fail;
+	}
+
+	return 0;
+fail:
+	mxr_release_clocks(mdev);
+	return -ENODEV;
+}
+
+static int __devinit mxr_acquire_resources(struct mxr_device *mdev,
+	struct platform_device *pdev)
+{
+	int ret;
+	ret = mxr_acquire_plat_resources(mdev, pdev);
+
+	if (ret)
+		goto fail;
+
+	ret = mxr_acquire_clocks(mdev);
+	if (ret)
+		goto fail_plat;
+
+	mxr_info(mdev, "resources acquired\n");
+	return 0;
+
+fail_plat:
+	mxr_release_plat_resources(mdev);
+fail:
+	mxr_err(mdev, "resources acquire failed\n");
+	return ret;
+}
+
+static void mxr_release_resources(struct mxr_device *mdev)
+{
+	mxr_release_clocks(mdev);
+	mxr_release_plat_resources(mdev);
+	memset(&mdev->res, 0, sizeof mdev->res);
+}
+
+static void mxr_release_layers(struct mxr_device *mdev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mdev->layer); ++i)
+		if (mdev->layer[i])
+			mxr_layer_release(mdev->layer[i]);
+}
+
+static int __devinit mxr_acquire_layers(struct mxr_device *mdev,
+	struct mxr_platform_data *pdata)
+{
+	mdev->layer[0] = mxr_graph_layer_create(mdev, 0);
+	mdev->layer[1] = mxr_graph_layer_create(mdev, 1);
+	mdev->layer[2] = mxr_vp_layer_create(mdev, 0);
+
+	if (!mdev->layer[0] || !mdev->layer[1] || !mdev->layer[2]) {
+		mxr_err(mdev, "failed to acquire layers\n");
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	mxr_release_layers(mdev);
+	return -ENODEV;
+}
+
+/* ---------- POWER MANAGEMENT ----------- */
+
+static int mxr_runtime_resume(struct device *dev)
+{
+	struct mxr_device *mdev = to_mdev(dev);
+	struct mxr_resources *res = &mdev->res;
+
+	mxr_dbg(mdev, "resume - start\n");
+	mutex_lock(&mdev->mutex);
+	/* turn clocks on */
+	clk_enable(res->mixer);
+	clk_enable(res->vp);
+	clk_enable(res->sclk_mixer);
+	/* apply default configuration */
+	mxr_reg_reset(mdev);
+	mxr_dbg(mdev, "resume - finished\n");
+
+	mutex_unlock(&mdev->mutex);
+	return 0;
+}
+
+static int mxr_runtime_suspend(struct device *dev)
+{
+	struct mxr_device *mdev = to_mdev(dev);
+	struct mxr_resources *res = &mdev->res;
+	mxr_dbg(mdev, "suspend - start\n");
+	mutex_lock(&mdev->mutex);
+	/* turn clocks off */
+	clk_disable(res->sclk_mixer);
+	clk_disable(res->vp);
+	clk_disable(res->mixer);
+	mutex_unlock(&mdev->mutex);
+	mxr_dbg(mdev, "suspend - finished\n");
+	return 0;
+}
+
+static const struct dev_pm_ops mxr_pm_ops = {
+	.runtime_suspend = mxr_runtime_suspend,
+	.runtime_resume	 = mxr_runtime_resume,
+};
+
+/* --------- DRIVER INITIALIZATION ---------- */
+
+static int __devinit mxr_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mxr_platform_data *pdata = dev->platform_data;
+	struct mxr_device *mdev;
+	int ret;
+
+	/* mdev does not exist yet so no mxr_dbg is used */
+	dev_info(dev, "probe start\n");
+
+	mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
+	if (!mdev) {
+		dev_err(dev, "not enough memory.\n");
+		ret = -ENOMEM;
+		goto fail;
+	}
+
+	/* setup pointer to master device */
+	mdev->dev = dev;
+
+	mutex_init(&mdev->mutex);
+	spin_lock_init(&mdev->reg_slock);
+	init_waitqueue_head(&mdev->event_queue);
+
+	/* acquire resources: regs, irqs, clocks, regulators */
+	ret = mxr_acquire_resources(mdev, pdev);
+	if (ret)
+		goto fail_mem;
+
+	/* configure resources for video output */
+	ret = mxr_acquire_video(mdev, mxr_output_conf,
+		ARRAY_SIZE(mxr_output_conf));
+	if (ret)
+		goto fail_resources;
+
+	/* configure layers */
+	ret = mxr_acquire_layers(mdev, pdata);
+	if (ret)
+		goto fail_video;
+
+	pm_runtime_enable(dev);
+
+	mxr_info(mdev, "probe successful\n");
+	return 0;
+
+fail_video:
+	mxr_release_video(mdev);
+
+fail_resources:
+	mxr_release_resources(mdev);
+
+fail_mem:
+	kfree(mdev);
+
+fail:
+	dev_info(dev, "probe failed\n");
+	return ret;
+}
+
+static int __devexit mxr_remove(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mxr_device *mdev = to_mdev(dev);
+
+	pm_runtime_disable(dev);
+
+	mxr_release_layers(mdev);
+	mxr_release_video(mdev);
+	mxr_release_resources(mdev);
+
+	kfree(mdev);
+
+	dev_info(dev, "remove successful\n");
+	return 0;
+}
+
+static struct platform_driver mxr_driver __refdata = {
+	.probe = mxr_probe,
+	.remove = __devexit_p(mxr_remove),
+	.driver = {
+		.name = MXR_DRIVER_NAME,
+		.owner = THIS_MODULE,
+		.pm = &mxr_pm_ops,
+	}
+};
+
+static int __init mxr_init(void)
+{
+	int i, ret;
+	static const char banner[] __initconst =
+		"Samsung TV Mixer driver, "
+		"(c) 2010-2011 Samsung Electronics Co., Ltd.\n";
+	pr_info("%s\n", banner);
+
+	/* Loading auxiliary modules */
+	for (i = 0; i < ARRAY_SIZE(mxr_output_conf); ++i)
+		request_module(mxr_output_conf[i].module_name);
+
+	ret = platform_driver_register(&mxr_driver);
+	if (ret != 0) {
+		pr_err("s5p-tv: registration of MIXER driver failed\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
+module_init(mxr_init);
+
+static void __exit mxr_exit(void)
+{
+	platform_driver_unregister(&mxr_driver);
+}
+module_exit(mxr_exit);