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, 448 insertions, 0 deletions

diff --git a/drivers/media/platform/s5p-tv/sdo_drv.c b/drivers/media/platform/s5p-tv/sdo_drv.c
new file mode 100644
index 000000000000..ad68bbed014e
--- /dev/null
+++ b/drivers/media/platform/s5p-tv/sdo_drv.c
@@ -0,0 +1,448 @@
+/*
+ * Samsung Standard Definition Output (SDO) 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 <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#include <media/v4l2-subdev.h>
+
+#include "regs-sdo.h"
+
+MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>");
+MODULE_DESCRIPTION("Samsung Standard Definition Output (SDO)");
+MODULE_LICENSE("GPL");
+
+#define SDO_DEFAULT_STD	V4L2_STD_PAL
+
+struct sdo_format {
+	v4l2_std_id id;
+	/* all modes are 720 pixels wide */
+	unsigned int height;
+	unsigned int cookie;
+};
+
+struct sdo_device {
+	/** pointer to device parent */
+	struct device *dev;
+	/** base address of SDO registers */
+	void __iomem *regs;
+	/** SDO interrupt */
+	unsigned int irq;
+	/** DAC source clock */
+	struct clk *sclk_dac;
+	/** DAC clock */
+	struct clk *dac;
+	/** DAC physical interface */
+	struct clk *dacphy;
+	/** clock for control of VPLL */
+	struct clk *fout_vpll;
+	/** regulator for SDO IP power */
+	struct regulator *vdac;
+	/** regulator for SDO plug detection */
+	struct regulator *vdet;
+	/** subdev used as device interface */
+	struct v4l2_subdev sd;
+	/** current format */
+	const struct sdo_format *fmt;
+};
+
+static inline struct sdo_device *sd_to_sdev(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct sdo_device, sd);
+}
+
+static inline
+void sdo_write_mask(struct sdo_device *sdev, u32 reg_id, u32 value, u32 mask)
+{
+	u32 old = readl(sdev->regs + reg_id);
+	value = (value & mask) | (old & ~mask);
+	writel(value, sdev->regs + reg_id);
+}
+
+static inline
+void sdo_write(struct sdo_device *sdev, u32 reg_id, u32 value)
+{
+	writel(value, sdev->regs + reg_id);
+}
+
+static inline
+u32 sdo_read(struct sdo_device *sdev, u32 reg_id)
+{
+	return readl(sdev->regs + reg_id);
+}
+
+static irqreturn_t sdo_irq_handler(int irq, void *dev_data)
+{
+	struct sdo_device *sdev = dev_data;
+
+	/* clear interrupt */
+	sdo_write_mask(sdev, SDO_IRQ, ~0, SDO_VSYNC_IRQ_PEND);
+	return IRQ_HANDLED;
+}
+
+static void sdo_reg_debug(struct sdo_device *sdev)
+{
+#define DBGREG(reg_id) \
+	dev_info(sdev->dev, #reg_id " = %08x\n", \
+		sdo_read(sdev, reg_id))
+
+	DBGREG(SDO_CLKCON);
+	DBGREG(SDO_CONFIG);
+	DBGREG(SDO_VBI);
+	DBGREG(SDO_DAC);
+	DBGREG(SDO_IRQ);
+	DBGREG(SDO_IRQMASK);
+	DBGREG(SDO_VERSION);
+}
+
+static const struct sdo_format sdo_format[] = {
+	{ V4L2_STD_PAL_N,	.height = 576, .cookie = SDO_PAL_N },
+	{ V4L2_STD_PAL_Nc,	.height = 576, .cookie = SDO_PAL_NC },
+	{ V4L2_STD_PAL_M,	.height = 480, .cookie = SDO_PAL_M },
+	{ V4L2_STD_PAL_60,	.height = 480, .cookie = SDO_PAL_60 },
+	{ V4L2_STD_NTSC_443,	.height = 480, .cookie = SDO_NTSC_443 },
+	{ V4L2_STD_PAL,		.height = 576, .cookie = SDO_PAL_BGHID },
+	{ V4L2_STD_NTSC_M,	.height = 480, .cookie = SDO_NTSC_M },
+};
+
+static const struct sdo_format *sdo_find_format(v4l2_std_id id)
+{
+	int i;
+	for (i = 0; i < ARRAY_SIZE(sdo_format); ++i)
+		if (sdo_format[i].id & id)
+			return &sdo_format[i];
+	return NULL;
+}
+
+static int sdo_g_tvnorms_output(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	*std = V4L2_STD_NTSC_M | V4L2_STD_PAL_M | V4L2_STD_PAL |
+		V4L2_STD_PAL_N | V4L2_STD_PAL_Nc |
+		V4L2_STD_NTSC_443 | V4L2_STD_PAL_60;
+	return 0;
+}
+
+static int sdo_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+	struct sdo_device *sdev = sd_to_sdev(sd);
+	const struct sdo_format *fmt;
+	fmt = sdo_find_format(std);
+	if (fmt == NULL)
+		return -EINVAL;
+	sdev->fmt = fmt;
+	return 0;
+}
+
+static int sdo_g_std_output(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+	*std = sd_to_sdev(sd)->fmt->id;
+	return 0;
+}
+
+static int sdo_g_mbus_fmt(struct v4l2_subdev *sd,
+	struct v4l2_mbus_framefmt *fmt)
+{
+	struct sdo_device *sdev = sd_to_sdev(sd);
+
+	if (!sdev->fmt)
+		return -ENXIO;
+	/* all modes are 720 pixels wide */
+	fmt->width = 720;
+	fmt->height = sdev->fmt->height;
+	fmt->code = V4L2_MBUS_FMT_FIXED;
+	fmt->field = V4L2_FIELD_INTERLACED;
+	fmt->colorspace = V4L2_COLORSPACE_JPEG;
+	return 0;
+}
+
+static int sdo_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct sdo_device *sdev = sd_to_sdev(sd);
+	struct device *dev = sdev->dev;
+	int ret;
+
+	dev_info(dev, "sdo_s_power(%d)\n", on);
+
+	if (on)
+		ret = pm_runtime_get_sync(dev);
+	else
+		ret = pm_runtime_put_sync(dev);
+
+	/* only values < 0 indicate errors */
+	return IS_ERR_VALUE(ret) ? ret : 0;
+}
+
+static int sdo_streamon(struct sdo_device *sdev)
+{
+	/* set proper clock for Timing Generator */
+	clk_set_rate(sdev->fout_vpll, 54000000);
+	dev_info(sdev->dev, "fout_vpll.rate = %lu\n",
+	clk_get_rate(sdev->fout_vpll));
+	/* enable clock in SDO */
+	sdo_write_mask(sdev, SDO_CLKCON, ~0, SDO_TVOUT_CLOCK_ON);
+	clk_enable(sdev->dacphy);
+	/* enable DAC */
+	sdo_write_mask(sdev, SDO_DAC, ~0, SDO_POWER_ON_DAC);
+	sdo_reg_debug(sdev);
+	return 0;
+}
+
+static int sdo_streamoff(struct sdo_device *sdev)
+{
+	int tries;
+
+	sdo_write_mask(sdev, SDO_DAC, 0, SDO_POWER_ON_DAC);
+	clk_disable(sdev->dacphy);
+	sdo_write_mask(sdev, SDO_CLKCON, 0, SDO_TVOUT_CLOCK_ON);
+	for (tries = 100; tries; --tries) {
+		if (sdo_read(sdev, SDO_CLKCON) & SDO_TVOUT_CLOCK_READY)
+			break;
+		mdelay(1);
+	}
+	if (tries == 0)
+		dev_err(sdev->dev, "failed to stop streaming\n");
+	return tries ? 0 : -EIO;
+}
+
+static int sdo_s_stream(struct v4l2_subdev *sd, int on)
+{
+	struct sdo_device *sdev = sd_to_sdev(sd);
+	return on ? sdo_streamon(sdev) : sdo_streamoff(sdev);
+}
+
+static const struct v4l2_subdev_core_ops sdo_sd_core_ops = {
+	.s_power = sdo_s_power,
+};
+
+static const struct v4l2_subdev_video_ops sdo_sd_video_ops = {
+	.s_std_output = sdo_s_std_output,
+	.g_std_output = sdo_g_std_output,
+	.g_tvnorms_output = sdo_g_tvnorms_output,
+	.g_mbus_fmt = sdo_g_mbus_fmt,
+	.s_stream = sdo_s_stream,
+};
+
+static const struct v4l2_subdev_ops sdo_sd_ops = {
+	.core = &sdo_sd_core_ops,
+	.video = &sdo_sd_video_ops,
+};
+
+static int sdo_runtime_suspend(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct sdo_device *sdev = sd_to_sdev(sd);
+
+	dev_info(dev, "suspend\n");
+	regulator_disable(sdev->vdet);
+	regulator_disable(sdev->vdac);
+	clk_disable(sdev->sclk_dac);
+	return 0;
+}
+
+static int sdo_runtime_resume(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct sdo_device *sdev = sd_to_sdev(sd);
+
+	dev_info(dev, "resume\n");
+	clk_enable(sdev->sclk_dac);
+	regulator_enable(sdev->vdac);
+	regulator_enable(sdev->vdet);
+
+	/* software reset */
+	sdo_write_mask(sdev, SDO_CLKCON, ~0, SDO_TVOUT_SW_RESET);
+	mdelay(10);
+	sdo_write_mask(sdev, SDO_CLKCON, 0, SDO_TVOUT_SW_RESET);
+
+	/* setting TV mode */
+	sdo_write_mask(sdev, SDO_CONFIG, sdev->fmt->cookie, SDO_STANDARD_MASK);
+	/* XXX: forcing interlaced mode using undocumented bit */
+	sdo_write_mask(sdev, SDO_CONFIG, 0, SDO_PROGRESSIVE);
+	/* turn all VBI off */
+	sdo_write_mask(sdev, SDO_VBI, 0, SDO_CVBS_WSS_INS |
+		SDO_CVBS_CLOSED_CAPTION_MASK);
+	/* turn all post processing off */
+	sdo_write_mask(sdev, SDO_CCCON, ~0, SDO_COMPENSATION_BHS_ADJ_OFF |
+		SDO_COMPENSATION_CVBS_COMP_OFF);
+	sdo_reg_debug(sdev);
+	return 0;
+}
+
+static const struct dev_pm_ops sdo_pm_ops = {
+	.runtime_suspend = sdo_runtime_suspend,
+	.runtime_resume	 = sdo_runtime_resume,
+};
+
+static int __devinit sdo_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct sdo_device *sdev;
+	struct resource *res;
+	int ret = 0;
+	struct clk *sclk_vpll;
+
+	dev_info(dev, "probe start\n");
+	sdev = devm_kzalloc(&pdev->dev, sizeof *sdev, GFP_KERNEL);
+	if (!sdev) {
+		dev_err(dev, "not enough memory.\n");
+		ret = -ENOMEM;
+		goto fail;
+	}
+	sdev->dev = dev;
+
+	/* mapping registers */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (res == NULL) {
+		dev_err(dev, "get memory resource failed.\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+
+	sdev->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+	if (sdev->regs == NULL) {
+		dev_err(dev, "register mapping failed.\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+
+	/* acquiring interrupt */
+	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (res == NULL) {
+		dev_err(dev, "get interrupt resource failed.\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+	ret = devm_request_irq(&pdev->dev, res->start, sdo_irq_handler, 0,
+			       "s5p-sdo", sdev);
+	if (ret) {
+		dev_err(dev, "request interrupt failed.\n");
+		goto fail;
+	}
+	sdev->irq = res->start;
+
+	/* acquire clocks */
+	sdev->sclk_dac = clk_get(dev, "sclk_dac");
+	if (IS_ERR_OR_NULL(sdev->sclk_dac)) {
+		dev_err(dev, "failed to get clock 'sclk_dac'\n");
+		ret = -ENXIO;
+		goto fail;
+	}
+	sdev->dac = clk_get(dev, "dac");
+	if (IS_ERR_OR_NULL(sdev->dac)) {
+		dev_err(dev, "failed to get clock 'dac'\n");
+		ret = -ENXIO;
+		goto fail_sclk_dac;
+	}
+	sdev->dacphy = clk_get(dev, "dacphy");
+	if (IS_ERR_OR_NULL(sdev->dacphy)) {
+		dev_err(dev, "failed to get clock 'dacphy'\n");
+		ret = -ENXIO;
+		goto fail_dac;
+	}
+	sclk_vpll = clk_get(dev, "sclk_vpll");
+	if (IS_ERR_OR_NULL(sclk_vpll)) {
+		dev_err(dev, "failed to get clock 'sclk_vpll'\n");
+		ret = -ENXIO;
+		goto fail_dacphy;
+	}
+	clk_set_parent(sdev->sclk_dac, sclk_vpll);
+	clk_put(sclk_vpll);
+	sdev->fout_vpll = clk_get(dev, "fout_vpll");
+	if (IS_ERR_OR_NULL(sdev->fout_vpll)) {
+		dev_err(dev, "failed to get clock 'fout_vpll'\n");
+		goto fail_dacphy;
+	}
+	dev_info(dev, "fout_vpll.rate = %lu\n", clk_get_rate(sclk_vpll));
+
+	/* acquire regulator */
+	sdev->vdac = devm_regulator_get(dev, "vdd33a_dac");
+	if (IS_ERR_OR_NULL(sdev->vdac)) {
+		dev_err(dev, "failed to get regulator 'vdac'\n");
+		goto fail_fout_vpll;
+	}
+	sdev->vdet = devm_regulator_get(dev, "vdet");
+	if (IS_ERR_OR_NULL(sdev->vdet)) {
+		dev_err(dev, "failed to get regulator 'vdet'\n");
+		goto fail_fout_vpll;
+	}
+
+	/* enable gate for dac clock, because mixer uses it */
+	clk_enable(sdev->dac);
+
+	/* configure power management */
+	pm_runtime_enable(dev);
+
+	/* configuration of interface subdevice */
+	v4l2_subdev_init(&sdev->sd, &sdo_sd_ops);
+	sdev->sd.owner = THIS_MODULE;
+	strlcpy(sdev->sd.name, "s5p-sdo", sizeof sdev->sd.name);
+
+	/* set default format */
+	sdev->fmt = sdo_find_format(SDO_DEFAULT_STD);
+	BUG_ON(sdev->fmt == NULL);
+
+	/* keeping subdev in device's private for use by other drivers */
+	dev_set_drvdata(dev, &sdev->sd);
+
+	dev_info(dev, "probe succeeded\n");
+	return 0;
+
+fail_fout_vpll:
+	clk_put(sdev->fout_vpll);
+fail_dacphy:
+	clk_put(sdev->dacphy);
+fail_dac:
+	clk_put(sdev->dac);
+fail_sclk_dac:
+	clk_put(sdev->sclk_dac);
+fail:
+	dev_info(dev, "probe failed\n");
+	return ret;
+}
+
+static int __devexit sdo_remove(struct platform_device *pdev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(&pdev->dev);
+	struct sdo_device *sdev = sd_to_sdev(sd);
+
+	pm_runtime_disable(&pdev->dev);
+	clk_disable(sdev->dac);
+	clk_put(sdev->fout_vpll);
+	clk_put(sdev->dacphy);
+	clk_put(sdev->dac);
+	clk_put(sdev->sclk_dac);
+
+	dev_info(&pdev->dev, "remove successful\n");
+	return 0;
+}
+
+static struct platform_driver sdo_driver __refdata = {
+	.probe = sdo_probe,
+	.remove = __devexit_p(sdo_remove),
+	.driver = {
+		.name = "s5p-sdo",
+		.owner = THIS_MODULE,
+		.pm = &sdo_pm_ops,
+	}
+};
+
+module_platform_driver(sdo_driver);