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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2017-10-13 02:49:38 +0300
committerMark Brown <broonie@kernel.org>2017-10-21 13:21:09 +0300
commit7feb2f786a46d34cac760d5e246dfbdafafa0e96 (patch)
tree7d831a7cc496461853d29b0b7a1e5b5130dc276c /include/sound/soc-acpi.h
parent39712db878a499542651eb6c2f5ceec4eacc72d1 (diff)
downloadlinux-7feb2f786a46d34cac760d5e246dfbdafafa0e96.tar.xz
ASoC: move ACPI common code out of Intel/sst tree
ACPI support is not specific to the Intel/SST driver. Move the enumeration and matching code which is not hardware-dependent to sound/soc and rename relevant sst_acpi_ structures and functions with snd_soc_acpi_ prefix soc-acpi.h is protected by a #ifndef __LINUX_SND_SOC_ACPI_H for consistency with all other SoC .h files: grep -L __LINUX include/sound/soc* | wc -l 0 grep __LINUX include/sound/soc* | wc -l 14 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/soc-acpi.h')
-rw-r--r--include/sound/soc-acpi.h100
1 files changed, 100 insertions, 0 deletions
diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h
new file mode 100644
index 000000000000..918d78e8c8d6
--- /dev/null
+++ b/include/sound/soc-acpi.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2013-15, Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ */
+
+#ifndef __LINUX_SND_SOC_ACPI_H
+#define __LINUX_SND_SOC_ACPI_H
+
+#include <linux/stddef.h>
+#include <linux/acpi.h>
+
+struct snd_soc_acpi_package_context {
+ char *name; /* package name */
+ int length; /* number of elements */
+ struct acpi_buffer *format;
+ struct acpi_buffer *state;
+ bool data_valid;
+};
+
+#if IS_ENABLED(CONFIG_ACPI)
+/* translation fron HID to I2C name, needed for DAI codec_name */
+const char *snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]);
+bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
+ struct snd_soc_acpi_package_context *ctx);
+#else
+static inline const char *
+snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN])
+{
+ return NULL;
+}
+static inline bool
+snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
+ struct snd_soc_acpi_package_context *ctx)
+{
+ return false;
+}
+#endif
+
+/* acpi match */
+struct snd_soc_acpi_mach *
+snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines);
+
+/* acpi check hid */
+bool snd_soc_acpi_check_hid(const u8 hid[ACPI_ID_LEN]);
+
+/**
+ * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
+ * related to the hardware, except for the firmware and topology file names.
+ *
+ * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
+ * @drv_name: machine driver name
+ * @fw_filename: firmware file name.
+ * @board: board name
+ * @machine_quirk: pointer to quirk, usually based on DMI information when
+ * ACPI ID alone is not sufficient, wrong or misleading
+ * @quirk_data: data used to uniquely identify a machine, usually a list of
+ * audio codecs whose presence if checked with ACPI
+ * @pdata: intended for platform data or machine specific-ops. This structure
+ * is not constant since this field may be updated at run-time
+ */
+/* Descriptor for SST ASoC machine driver */
+struct snd_soc_acpi_mach {
+ const u8 id[ACPI_ID_LEN];
+ const char *drv_name;
+ const char *fw_filename;
+ const char *board;
+ struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
+ const void *quirk_data;
+ void *pdata;
+};
+
+#define SND_SOC_ACPI_MAX_CODECS 3
+
+/**
+ * struct snd_soc_acpi_codecs: Structure to hold secondary codec information
+ * apart from the matched one, this data will be passed to the quirk function
+ * to match with the ACPI detected devices
+ *
+ * @num_codecs: number of secondary codecs used in the platform
+ * @codecs: holds the codec IDs
+ *
+ */
+struct snd_soc_acpi_codecs {
+ int num_codecs;
+ u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN];
+};
+
+/* check all codecs */
+struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg);
+
+#endif