Merge tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "There are no big surprising changes in this cycle, yet not too boring,
  either. The biggest change from diffstat POV is the removal of the
  legacy OSS driver codes that have been already disabled for a long
  time. This will bring a few trivial merge conflicts.

  As new features in ASoC side, there are two things: a new AC97 bus
  implementation and AMD Stony platform support. Both include the
  relevant changes shared with other subsystems, e.g. AC97 MFD changes
  and DRM AMD changes.

  Some other highlighted topics are:

   - A bunch of USB-audio drivers got the hardening against the
     malicious device accesses with a new helper code for endpoint
     sanity check

   - Lots of cleanups for ASoC Intel platform code, including support
     for their open source audio firmware

   - Continued ASoC core componentization works

   - Support for scaling MCLK with sample rate in ASoC simple-card

   - Stabler PCM hot-unplug capability, especially for ASoC usages"

* tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (302 commits)
  Documentation: sound: hd-audio: notes.rst
  ASoC: bcm2835: Support left/right justified and DSP modes
  ASoC: bcm2835: Enforce full symmetry
  ASoC: bcm2835: Support additional samplerates up to 384kHz
  ASoC: bcm2835: Add support for TDM modes
  ASoC: add mclk-fs support to audio graph card
  ASoC: add mclk-fs to audio graph card binding
  ASoC: rt5514: work around link error
  ASoC: rt5514: mark PM functions as __maybe_unused
  ASoC: rt5663: Check the JD status in the button pushing
  ASoC: amd: Modified DMA transfer Mechanism for Playback
  ASoC: rt5645: Wait for 400msec before concluding on value of RT5645_VENDOR_ID2
  ASoC: sun4i-codec: fixed 32bit audio capture support for H3/H2+
  ASoC: da7213: add support for DSP modes
  ASoC: sun8i-codec: Add a comment on the LRCK inversion
  ASoC: sun8i-codec: Set the BCLK divider
  ASoC: rt5663: Delay and retry reading rt5663 ID register
  ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds
  ASoC: cs42l56: Fix reset GPIO name in example DT binding
  ASoC: rt5514-spi: check irq status to schedule data copy in resume function
  ...

1 files changed, 175 insertions, 0 deletions

diff --git a/sound/soc/soc-acpi.c b/sound/soc/soc-acpi.c
new file mode 100644
index 000000000000..f21df28bc28e
--- /dev/null
+++ b/sound/soc/soc-acpi.c
@@ -0,0 +1,175 @@
+/*
+ * soc-apci.c - support for ACPI enumeration.
+ *
+ * Copyright (c) 2013-15, Intel Corporation.
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+
+#include <sound/soc-acpi.h>
+
+static acpi_status snd_soc_acpi_find_name(acpi_handle handle, u32 level,
+				      void *context, void **ret)
+{
+	struct acpi_device *adev;
+	const char *name = NULL;
+
+	if (acpi_bus_get_device(handle, &adev))
+		return AE_OK;
+
+	if (adev->status.present && adev->status.functional) {
+		name = acpi_dev_name(adev);
+		*(const char **)ret = name;
+		return AE_CTRL_TERMINATE;
+	}
+
+	return AE_OK;
+}
+
+const char *snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN])
+{
+	const char *name = NULL;
+	acpi_status status;
+
+	status = acpi_get_devices(hid, snd_soc_acpi_find_name, NULL,
+				  (void **)&name);
+
+	if (ACPI_FAILURE(status) || name[0] == '\0')
+		return NULL;
+
+	return name;
+}
+EXPORT_SYMBOL_GPL(snd_soc_acpi_find_name_from_hid);
+
+static acpi_status snd_soc_acpi_mach_match(acpi_handle handle, u32 level,
+				       void *context, void **ret)
+{
+	unsigned long long sta;
+	acpi_status status;
+
+	*(bool *)context = true;
+	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+	if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
+		*(bool *)context = false;
+
+	return AE_OK;
+}
+
+bool snd_soc_acpi_check_hid(const u8 hid[ACPI_ID_LEN])
+{
+	acpi_status status;
+	bool found = false;
+
+	status = acpi_get_devices(hid, snd_soc_acpi_mach_match, &found, NULL);
+
+	if (ACPI_FAILURE(status))
+		return false;
+
+	return found;
+}
+EXPORT_SYMBOL_GPL(snd_soc_acpi_check_hid);
+
+struct snd_soc_acpi_mach *
+snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
+{
+	struct snd_soc_acpi_mach *mach;
+
+	for (mach = machines; mach->id[0]; mach++) {
+		if (snd_soc_acpi_check_hid(mach->id) == true) {
+			if (mach->machine_quirk == NULL)
+				return mach;
+
+			if (mach->machine_quirk(mach) != NULL)
+				return mach;
+		}
+	}
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_acpi_find_machine);
+
+static acpi_status snd_soc_acpi_find_package(acpi_handle handle, u32 level,
+					     void *context, void **ret)
+{
+	struct acpi_device *adev;
+	acpi_status status = AE_OK;
+	struct snd_soc_acpi_package_context *pkg_ctx = context;
+
+	pkg_ctx->data_valid = false;
+
+	if (acpi_bus_get_device(handle, &adev))
+		return AE_OK;
+
+	if (adev->status.present && adev->status.functional) {
+		struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+		union acpi_object  *myobj = NULL;
+
+		status = acpi_evaluate_object_typed(handle, pkg_ctx->name,
+						NULL, &buffer,
+						ACPI_TYPE_PACKAGE);
+		if (ACPI_FAILURE(status))
+			return AE_OK;
+
+		myobj = buffer.pointer;
+		if (!myobj || myobj->package.count != pkg_ctx->length) {
+			kfree(buffer.pointer);
+			return AE_OK;
+		}
+
+		status = acpi_extract_package(myobj,
+					pkg_ctx->format, pkg_ctx->state);
+		if (ACPI_FAILURE(status)) {
+			kfree(buffer.pointer);
+			return AE_OK;
+		}
+
+		kfree(buffer.pointer);
+		pkg_ctx->data_valid = true;
+		return AE_CTRL_TERMINATE;
+	}
+
+	return AE_OK;
+}
+
+bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
+				struct snd_soc_acpi_package_context *ctx)
+{
+	acpi_status status;
+
+	status = acpi_get_devices(hid, snd_soc_acpi_find_package, ctx, NULL);
+
+	if (ACPI_FAILURE(status) || !ctx->data_valid)
+		return false;
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(snd_soc_acpi_find_package_from_hid);
+
+struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg)
+{
+	struct snd_soc_acpi_mach *mach = arg;
+	struct snd_soc_acpi_codecs *codec_list =
+		(struct snd_soc_acpi_codecs *) mach->quirk_data;
+	int i;
+
+	if (mach->quirk_data == NULL)
+		return mach;
+
+	for (i = 0; i < codec_list->num_codecs; i++) {
+		if (snd_soc_acpi_check_hid(codec_list->codecs[i]) != true)
+			return NULL;
+	}
+
+	return mach;
+}
+EXPORT_SYMBOL_GPL(snd_soc_acpi_codec_list);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ALSA SoC ACPI module");