35f221aafe
ALSA lacks support to accept shared memory supplied from userspace. But some usecases need to get a shareable file descriptor for the dma buffer. As an alternate to adding custom ioctls to the ALSA framework, use a hwdep node to get a file descriptor to the underlying dma buffer. Maintain compat mode as well. CRs-Fixed: 2041151 Change-Id: Id783bb84e8ef59b28e42d982903971625577b9a3 Signed-off-by: Haynes Mathew George <hgeorge@codeaurora.org>
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
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* Copyright (c) 2013-2015,2017, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _DEV_DEP_H
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#define _DEV_DEP_H
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struct dolby_param_data {
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int32_t version;
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int32_t device_id;
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int32_t be_id;
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int32_t param_id;
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int32_t length;
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int32_t __user *data;
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};
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struct dolby_param_license {
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int32_t dmid;
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int32_t license_key;
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};
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#define SNDRV_DEVDEP_DAP_IOCTL_SET_PARAM\
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_IOWR('U', 0x10, struct dolby_param_data)
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#define SNDRV_DEVDEP_DAP_IOCTL_GET_PARAM\
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_IOR('U', 0x11, struct dolby_param_data)
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#define SNDRV_DEVDEP_DAP_IOCTL_DAP_COMMAND\
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_IOWR('U', 0x13, struct dolby_param_data)
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#define SNDRV_DEVDEP_DAP_IOCTL_DAP_LICENSE\
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_IOWR('U', 0x14, struct dolby_param_license)
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#define SNDRV_DEVDEP_DAP_IOCTL_GET_VISUALIZER\
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_IOR('U', 0x15, struct dolby_param_data)
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#define DTS_EAGLE_MODULE 0x00005000
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#define DTS_EAGLE_MODULE_ENABLE 0x00005001
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#define EAGLE_DRIVER_ID 0xF2
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#define DTS_EAGLE_IOCTL_GET_CACHE_SIZE _IOR(EAGLE_DRIVER_ID, 0, int)
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#define DTS_EAGLE_IOCTL_SET_CACHE_SIZE _IOW(EAGLE_DRIVER_ID, 1, int)
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#define DTS_EAGLE_IOCTL_GET_PARAM _IOR(EAGLE_DRIVER_ID, 2, void*)
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#define DTS_EAGLE_IOCTL_SET_PARAM _IOW(EAGLE_DRIVER_ID, 3, void*)
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#define DTS_EAGLE_IOCTL_SET_CACHE_BLOCK _IOW(EAGLE_DRIVER_ID, 4, void*)
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#define DTS_EAGLE_IOCTL_SET_ACTIVE_DEVICE _IOW(EAGLE_DRIVER_ID, 5, void*)
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#define DTS_EAGLE_IOCTL_GET_LICENSE _IOR(EAGLE_DRIVER_ID, 6, void*)
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#define DTS_EAGLE_IOCTL_SET_LICENSE _IOW(EAGLE_DRIVER_ID, 7, void*)
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#define DTS_EAGLE_IOCTL_SEND_LICENSE _IOW(EAGLE_DRIVER_ID, 8, int)
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#define DTS_EAGLE_IOCTL_SET_VOLUME_COMMANDS _IOW(EAGLE_DRIVER_ID, 9, void*)
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#define DTS_EAGLE_FLAG_IOCTL_PRE (1<<30)
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#define DTS_EAGLE_FLAG_IOCTL_JUSTSETCACHE (1<<31)
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#define DTS_EAGLE_FLAG_IOCTL_GETFROMCORE DTS_EAGLE_FLAG_IOCTL_JUSTSETCACHE
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#define DTS_EAGLE_FLAG_IOCTL_MASK (~(DTS_EAGLE_FLAG_IOCTL_PRE | \
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DTS_EAGLE_FLAG_IOCTL_JUSTSETCACHE))
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#define DTS_EAGLE_FLAG_ALSA_GET (1<<31)
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struct dts_eagle_param_desc {
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uint32_t id;
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uint32_t size;
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int32_t offset;
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uint32_t device;
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} __packed;
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#define HWDEP_FE_BASE 3000 /*unique base for FE hw dep nodes*/
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struct snd_pcm_mmap_fd {
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int32_t dir;
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int32_t fd;
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int32_t size;
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int32_t actual_size;
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};
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#define SNDRV_PCM_IOCTL_MMAP_DATA_FD _IOWR('U', 0xd2, struct snd_pcm_mmap_fd)
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#endif
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