Merge tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big staging tree update for 4.12-rc1.

  It's a big one, adding about 350k new lines of crap^Wcode, mostly all
  in a big dump of media drivers from Intel. But there's other new
  drivers in here as well, yet-another-wifi driver, new IIO drivers, and
  a new crypto accelerator.

  We also deleted a bunch of stuff, mostly in patch cleanups, but also
  the Android ION code has shrunk a lot, and the Android low memory
  killer driver was finally deleted, much to the celebration of the -mm
  developers.

  All of these have been in linux-next with a few build issues that will
  show up when you merge to your tree"

Merge conflicts in the new rtl8723bs driver (due to the wifi changes
this merge window) handled as per linux-next, courtesy of Stephen
Rothwell.

* tag 'staging-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1182 commits)
  staging: fsl-mc/dpio: add cpu <--> LE conversion for dpaa2_fd
  staging: ks7010: remove line continuations in quoted strings
  staging: vt6656: use tabs instead of spaces
  staging: android: ion: Fix unnecessary initialization of static variable
  staging: media: atomisp: fix range checking on clk_num
  staging: media: atomisp: fix misspelled word in comment
  staging: media: atomisp: kmap() can't fail
  staging: atomisp: remove #ifdef for runtime PM functions
  staging: atomisp: satm include directory is gone
  atomisp: remove some more unused files
  atomisp: remove hmm_load/store/clear indirections
  atomisp: kill off mmgr_free
  atomisp: clean up the hmm init/cleanup indirections
  atomisp: handle allocation calls before init in the hmm layer
  staging: fsl-dpaa2/eth: Add maintainer for Ethernet driver
  staging: fsl-dpaa2/eth: Add TODO file
  staging: fsl-dpaa2/eth: Add trace points
  staging: fsl-dpaa2/eth: Add driver specific stats
  staging: fsl-dpaa2/eth: Add ethtool support
  staging: fsl-dpaa2/eth: Add Freescale DPAA2 Ethernet driver
  ...

1 files changed, 472 insertions, 0 deletions

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
new file mode 100644
index 0000000..8f2d508
--- /dev/null
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -0,0 +1,472 @@
+/*****************************************************************************
+ * Copyright 2011 Broadcom Corporation.  All rights reserved.
+ *
+ * Unless you and Broadcom execute a separate written software license
+ * agreement governing use of this software, this software is licensed to you
+ * under the terms of the GNU General Public License version 2, available at
+ * http://www.broadcom.com/licenses/GPLv2.php (the "GPL").
+ *
+ * Notwithstanding the above, under no circumstances may you combine this
+ * software in any way with any other Broadcom software provided under a
+ * license other than the GPL, without Broadcom's express prior written
+ * consent.
+ *****************************************************************************/
+
+#include <linux/platform_device.h>
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include "bcm2835.h"
+
+static bool enable_hdmi;
+static bool enable_headphones;
+static bool enable_compat_alsa = true;
+
+module_param(enable_hdmi, bool, 0444);
+MODULE_PARM_DESC(enable_hdmi, "Enables HDMI virtual audio device");
+module_param(enable_headphones, bool, 0444);
+MODULE_PARM_DESC(enable_headphones, "Enables Headphones virtual audio device");
+module_param(enable_compat_alsa, bool, 0444);
+MODULE_PARM_DESC(enable_compat_alsa,
+		 "Enables ALSA compatibility virtual audio device");
+
+static void snd_devm_unregister_child(struct device *dev, void *res)
+{
+	struct device *childdev = *(struct device **)res;
+
+	device_unregister(childdev);
+}
+
+static int snd_devm_add_child(struct device *dev, struct device *child)
+{
+	struct device **dr;
+	int ret;
+
+	dr = devres_alloc(snd_devm_unregister_child, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return -ENOMEM;
+
+	ret = device_add(child);
+	if (ret) {
+		devres_free(dr);
+		return ret;
+	}
+
+	*dr = child;
+	devres_add(dev, dr);
+
+	return 0;
+}
+
+static struct device *
+snd_create_device(struct device *parent,
+		  struct device_driver *driver,
+		  const char *name)
+{
+	struct device *device;
+	int ret;
+
+	device = devm_kzalloc(parent, sizeof(*device), GFP_KERNEL);
+	if (!device)
+		return ERR_PTR(-ENOMEM);
+
+	device_initialize(device);
+	device->parent = parent;
+	device->driver = driver;
+
+	dev_set_name(device, "%s", name);
+
+	ret = snd_devm_add_child(parent, device);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return device;
+}
+
+static int snd_bcm2835_free(struct bcm2835_chip *chip)
+{
+	kfree(chip);
+	return 0;
+}
+
+/* component-destructor
+ * (see "Management of Cards and Components")
+ */
+static int snd_bcm2835_dev_free(struct snd_device *device)
+{
+	return snd_bcm2835_free(device->device_data);
+}
+
+/* chip-specific constructor
+ * (see "Management of Cards and Components")
+ */
+static int snd_bcm2835_create(struct snd_card *card,
+			      struct bcm2835_chip **rchip)
+{
+	struct bcm2835_chip *chip;
+	int err;
+	static struct snd_device_ops ops = {
+		.dev_free = snd_bcm2835_dev_free,
+	};
+
+	*rchip = NULL;
+
+	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
+	chip->card = card;
+
+	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+	if (err) {
+		snd_bcm2835_free(chip);
+		return err;
+	}
+
+	*rchip = chip;
+	return 0;
+}
+
+static void snd_devm_card_free(struct device *dev, void *res)
+{
+	struct snd_card *snd_card = *(struct snd_card **)res;
+
+	snd_card_free(snd_card);
+}
+
+static struct snd_card *snd_devm_card_new(struct device *dev)
+{
+	struct snd_card **dr;
+	struct snd_card *card;
+	int ret;
+
+	dr = devres_alloc(snd_devm_card_free, sizeof(*dr), GFP_KERNEL);
+	if (!dr)
+		return ERR_PTR(-ENOMEM);
+
+	ret = snd_card_new(dev, -1, NULL, THIS_MODULE, 0, &card);
+	if (ret) {
+		devres_free(dr);
+		return ERR_PTR(ret);
+	}
+
+	*dr = card;
+	devres_add(dev, dr);
+
+	return card;
+}
+
+typedef int (*bcm2835_audio_newpcm_func)(struct bcm2835_chip *chip,
+					 const char *name,
+					 enum snd_bcm2835_route route,
+					 u32 numchannels);
+
+typedef int (*bcm2835_audio_newctl_func)(struct bcm2835_chip *chip);
+
+struct bcm2835_audio_driver {
+	struct device_driver driver;
+	const char *shortname;
+	const char *longname;
+	int minchannels;
+	bcm2835_audio_newpcm_func newpcm;
+	bcm2835_audio_newctl_func newctl;
+	enum snd_bcm2835_route route;
+};
+
+static int bcm2835_audio_alsa_newpcm(struct bcm2835_chip *chip,
+				     const char *name,
+				     enum snd_bcm2835_route route,
+				     u32 numchannels)
+{
+	int err;
+
+	err = snd_bcm2835_new_pcm(chip, numchannels - 1);
+	if (err)
+		return err;
+
+	err = snd_bcm2835_new_spdif_pcm(chip);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static struct bcm2835_audio_driver bcm2835_audio_alsa = {
+	.driver = {
+		.name = "bcm2835_alsa",
+		.owner = THIS_MODULE,
+	},
+	.shortname = "bcm2835 ALSA",
+	.longname  = "bcm2835 ALSA",
+	.minchannels = 2,
+	.newpcm = bcm2835_audio_alsa_newpcm,
+	.newctl = snd_bcm2835_new_ctl,
+};
+
+static struct bcm2835_audio_driver bcm2835_audio_hdmi = {
+	.driver = {
+		.name = "bcm2835_hdmi",
+		.owner = THIS_MODULE,
+	},
+	.shortname = "bcm2835 HDMI",
+	.longname  = "bcm2835 HDMI",
+	.minchannels = 1,
+	.newpcm = snd_bcm2835_new_simple_pcm,
+	.newctl = snd_bcm2835_new_hdmi_ctl,
+	.route = AUDIO_DEST_HDMI
+};
+
+static struct bcm2835_audio_driver bcm2835_audio_headphones = {
+	.driver = {
+		.name = "bcm2835_headphones",
+		.owner = THIS_MODULE,
+	},
+	.shortname = "bcm2835 Headphones",
+	.longname  = "bcm2835 Headphones",
+	.minchannels = 1,
+	.newpcm = snd_bcm2835_new_simple_pcm,
+	.newctl = snd_bcm2835_new_headphones_ctl,
+	.route = AUDIO_DEST_HEADPHONES
+};
+
+struct bcm2835_audio_drivers {
+	struct bcm2835_audio_driver *audio_driver;
+	const bool *is_enabled;
+};
+
+static struct bcm2835_audio_drivers children_devices[] = {
+	{
+		.audio_driver = &bcm2835_audio_alsa,
+		.is_enabled = &enable_compat_alsa,
+	},
+	{
+		.audio_driver = &bcm2835_audio_hdmi,
+		.is_enabled = &enable_hdmi,
+	},
+	{
+		.audio_driver = &bcm2835_audio_headphones,
+		.is_enabled = &enable_headphones,
+	},
+};
+
+static int snd_add_child_device(struct device *device,
+				struct bcm2835_audio_driver *audio_driver,
+				u32 numchans)
+{
+	struct snd_card *card;
+	struct device *child;
+	struct bcm2835_chip *chip;
+	int err, i;
+
+	child = snd_create_device(device, &audio_driver->driver,
+				  audio_driver->driver.name);
+	if (IS_ERR(child)) {
+		dev_err(device,
+			"Unable to create child device %p, error %ld",
+			audio_driver->driver.name,
+			PTR_ERR(child));
+		return PTR_ERR(child);
+	}
+
+	card = snd_devm_card_new(child);
+	if (IS_ERR(card)) {
+		dev_err(child, "Failed to create card");
+		return PTR_ERR(card);
+	}
+
+	snd_card_set_dev(card, child);
+	strcpy(card->driver, audio_driver->driver.name);
+	strcpy(card->shortname, audio_driver->shortname);
+	strcpy(card->longname, audio_driver->longname);
+
+	err = snd_bcm2835_create(card, &chip);
+	if (err) {
+		dev_err(child, "Failed to create chip, error %d\n", err);
+		return err;
+	}
+
+	chip->dev = child;
+
+	err = audio_driver->newpcm(chip, audio_driver->shortname,
+		audio_driver->route,
+		numchans);
+	if (err) {
+		dev_err(child, "Failed to create pcm, error %d\n", err);
+		return err;
+	}
+
+	err = audio_driver->newctl(chip);
+	if (err) {
+		dev_err(child, "Failed to create controls, error %d\n", err);
+		return err;
+	}
+
+	for (i = 0; i < numchans; i++)
+		chip->avail_substreams |= (1 << i);
+
+	err = snd_card_register(card);
+	if (err) {
+		dev_err(child, "Failed to register card, error %d\n", err);
+		return err;
+	}
+
+	dev_set_drvdata(child, card);
+	dev_info(child, "card created with %d channels\n", numchans);
+
+	return 0;
+}
+
+static int snd_add_child_devices(struct device *device, u32 numchans)
+{
+	int i;
+	int count_devices = 0;
+	int minchannels = 0;
+	int extrachannels = 0;
+	int extrachannels_per_driver = 0;
+	int extrachannels_remainder = 0;
+
+	for (i = 0; i < ARRAY_SIZE(children_devices); i++)
+		if (*children_devices[i].is_enabled)
+			count_devices++;
+
+	if (!count_devices)
+		return 0;
+
+	for (i = 0; i < ARRAY_SIZE(children_devices); i++)
+		if (*children_devices[i].is_enabled)
+			minchannels +=
+				children_devices[i].audio_driver->minchannels;
+
+	if (minchannels < numchans) {
+		extrachannels = numchans - minchannels;
+		extrachannels_per_driver = extrachannels / count_devices;
+		extrachannels_remainder = extrachannels % count_devices;
+	}
+
+	dev_dbg(device, "minchannels %d\n", minchannels);
+	dev_dbg(device, "extrachannels %d\n", extrachannels);
+	dev_dbg(device, "extrachannels_per_driver %d\n",
+		extrachannels_per_driver);
+	dev_dbg(device, "extrachannels_remainder %d\n",
+		extrachannels_remainder);
+
+	for (i = 0; i < ARRAY_SIZE(children_devices); i++) {
+		int err;
+		int numchannels_this_device;
+		struct bcm2835_audio_driver *audio_driver;
+
+		if (!*children_devices[i].is_enabled)
+			continue;
+
+		audio_driver = children_devices[i].audio_driver;
+
+		if (audio_driver->minchannels > numchans) {
+			dev_err(device,
+				"Out of channels, needed %d but only %d left\n",
+				audio_driver->minchannels,
+				numchans);
+			continue;
+		}
+
+		numchannels_this_device =
+			audio_driver->minchannels + extrachannels_per_driver +
+			extrachannels_remainder;
+		extrachannels_remainder = 0;
+
+		numchans -= numchannels_this_device;
+
+		err = snd_add_child_device(device, audio_driver,
+					   numchannels_this_device);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int snd_bcm2835_alsa_probe_dt(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	u32 numchans;
+	int err;
+
+	err = of_property_read_u32(dev->of_node, "brcm,pwm-channels",
+				   &numchans);
+	if (err) {
+		dev_err(dev, "Failed to get DT property 'brcm,pwm-channels'");
+		return err;
+	}
+
+	if (numchans == 0 || numchans > MAX_SUBSTREAMS) {
+		numchans = MAX_SUBSTREAMS;
+		dev_warn(dev,
+			 "Illegal 'brcm,pwm-channels' value, will use %u\n",
+			 numchans);
+	}
+
+	err = snd_add_child_devices(dev, numchans);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int snd_bcm2835_alsa_suspend(struct platform_device *pdev,
+				    pm_message_t state)
+{
+	return 0;
+}
+
+static int snd_bcm2835_alsa_resume(struct platform_device *pdev)
+{
+	return 0;
+}
+
+#endif
+
+static const struct of_device_id snd_bcm2835_of_match_table[] = {
+	{ .compatible = "brcm,bcm2835-audio",},
+	{},
+};
+MODULE_DEVICE_TABLE(of, snd_bcm2835_of_match_table);
+
+static struct platform_driver bcm2835_alsa0_driver = {
+	.probe = snd_bcm2835_alsa_probe_dt,
+#ifdef CONFIG_PM
+	.suspend = snd_bcm2835_alsa_suspend,
+	.resume = snd_bcm2835_alsa_resume,
+#endif
+	.driver = {
+		.name = "bcm2835_audio",
+		.owner = THIS_MODULE,
+		.of_match_table = snd_bcm2835_of_match_table,
+	},
+};
+
+static int bcm2835_alsa_device_init(void)
+{
+	int retval;
+
+	retval = platform_driver_register(&bcm2835_alsa0_driver);
+	if (retval)
+		pr_err("Error registering bcm2835_audio driver %d .\n", retval);
+
+	return retval;
+}
+
+static void bcm2835_alsa_device_exit(void)
+{
+	platform_driver_unregister(&bcm2835_alsa0_driver);
+}
+
+late_initcall(bcm2835_alsa_device_init);
+module_exit(bcm2835_alsa_device_exit);
+
+MODULE_AUTHOR("Dom Cobley");
+MODULE_DESCRIPTION("Alsa driver for BCM2835 chip");
+MODULE_LICENSE("GPL");