forked from luck/tmp_suning_uos_patched
5dab11d897
Hdmi audio driver based on the child platform device created by gfx driver is implemented. This audio driver is derived from legacy intel hdmi audio driver. The interfaces for interaction between gfx and audio are updated and the driver implementation updated to derive interrupts in its own address space based on irq chip framework The changes to calculate sub-period positions was triggered by David Henningsson <david.henningsson@canonical.com> and is accomodated in this patch Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Jerome Anand <jerome.anand@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
198 lines
6.3 KiB
C
198 lines
6.3 KiB
C
/*
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* Copyright (C) 2016 Intel Corporation
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* Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>
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* Ramesh Babu K V <ramesh.babu@intel.com>
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* Vaibhav Agarwal <vaibhav.agarwal@intel.com>
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* Jerome Anand <jerome.anand@intel.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _INTEL_HDMI_AUDIO_H_
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#define _INTEL_HDMI_AUDIO_H_
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#include <linux/types.h>
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#include <sound/initval.h>
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#include <linux/version.h>
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#include <linux/pm_runtime.h>
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#include <sound/asoundef.h>
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#include <sound/control.h>
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#include <sound/pcm.h>
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#include "intel_hdmi_lpe_audio.h"
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#define PCM_INDEX 0
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#define MAX_PB_STREAMS 1
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#define MAX_CAP_STREAMS 0
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#define HDMI_AUDIO_DRIVER "hdmi-audio"
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#define INFO_FRAME_WORD1 0x000a0184
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#define FIFO_THRESHOLD 0xFE
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#define DMA_FIFO_THRESHOLD 0x7
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#define BYTES_PER_WORD 0x4
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/* Sampling rate as per IEC60958 Ver 3 */
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#define CH_STATUS_MAP_32KHZ 0x3
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#define CH_STATUS_MAP_44KHZ 0x0
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#define CH_STATUS_MAP_48KHZ 0x2
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#define CH_STATUS_MAP_88KHZ 0x8
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#define CH_STATUS_MAP_96KHZ 0xA
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#define CH_STATUS_MAP_176KHZ 0xC
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#define CH_STATUS_MAP_192KHZ 0xE
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#define MAX_SMPL_WIDTH_20 0x0
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#define MAX_SMPL_WIDTH_24 0x1
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#define SMPL_WIDTH_16BITS 0x1
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#define SMPL_WIDTH_24BITS 0x5
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#define CHANNEL_ALLOCATION 0x1F
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#define MASK_BYTE0 0x000000FF
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#define VALID_DIP_WORDS 3
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#define LAYOUT0 0
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#define LAYOUT1 1
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#define SWAP_LFE_CENTER 0x00fac4c8
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#define AUD_CONFIG_CH_MASK_V2 0x70
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struct pcm_stream_info {
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int str_id;
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void *had_substream;
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void (*period_elapsed)(void *had_substream);
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u32 buffer_ptr;
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u64 buffer_rendered;
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u32 ring_buf_size;
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int sfreq;
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};
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struct ring_buf_info {
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u32 buf_addr;
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u32 buf_size;
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u8 is_valid;
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};
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struct had_stream_pvt {
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enum had_stream_status stream_status;
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int stream_ops;
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ssize_t dbg_cum_bytes;
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};
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struct had_pvt_data {
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enum had_status_stream stream_type;
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};
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struct had_callback_ops {
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had_event_call_back intel_had_event_call_back;
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};
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/**
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* struct snd_intelhad - intelhad driver structure
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*
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* @card: ptr to hold card details
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* @card_index: sound card index
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* @card_id: detected sound card id
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* @reg_ops: register operations to program registers
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* @query_ops: caps call backs for get/set operations
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* @drv_status: driver status
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* @buf_info: ring buffer info
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* @stream_info: stream information
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* @eeld: holds EELD info
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* @curr_buf: pointer to hold current active ring buf
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* @valid_buf_cnt: ring buffer count for stream
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* @had_spinlock: driver lock
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* @aes_bits: IEC958 status bits
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* @buff_done: id of current buffer done intr
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* @dev: platoform device handle
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* @kctl: holds kctl ptrs used for channel map
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* @chmap: holds channel map info
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* @audio_reg_base: hdmi audio register base offset
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* @hw_silence: flag indicates SoC support for HW silence/Keep alive
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* @ops: holds ops functions based on platform
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*/
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struct snd_intelhad {
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struct snd_card *card;
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int card_index;
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char *card_id;
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struct hdmi_audio_registers_ops reg_ops;
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struct hdmi_audio_query_set_ops query_ops;
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enum had_drv_status drv_status;
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struct ring_buf_info buf_info[HAD_NUM_OF_RING_BUFS];
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struct pcm_stream_info stream_info;
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union otm_hdmi_eld_t eeld;
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enum intel_had_aud_buf_type curr_buf;
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int valid_buf_cnt;
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unsigned int aes_bits;
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int flag_underrun;
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struct had_pvt_data *private_data;
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spinlock_t had_spinlock;
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enum intel_had_aud_buf_type buff_done;
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struct device *dev;
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struct snd_kcontrol *kctl;
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struct snd_pcm_chmap *chmap;
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unsigned int *audio_reg_base;
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unsigned int audio_cfg_offset;
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bool hw_silence;
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struct had_ops *ops;
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};
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struct had_ops {
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void (*enable_audio)(struct snd_pcm_substream *substream,
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u8 enable);
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void (*reset_audio)(u8 reset);
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int (*prog_n)(u32 aud_samp_freq, u32 *n_param,
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struct snd_intelhad *intelhaddata);
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void (*prog_cts)(u32 aud_samp_freq, u32 tmds, u32 n_param,
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struct snd_intelhad *intelhaddata);
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int (*audio_ctrl)(struct snd_pcm_substream *substream,
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struct snd_intelhad *intelhaddata);
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void (*prog_dip)(struct snd_pcm_substream *substream,
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struct snd_intelhad *intelhaddata);
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void (*handle_underrun)(struct snd_intelhad *intelhaddata);
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};
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int had_event_handler(enum had_event_type event_type, void *data);
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int hdmi_audio_query(void *drv_data, struct hdmi_audio_event event);
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int hdmi_audio_suspend(void *drv_data, struct hdmi_audio_event event);
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int hdmi_audio_resume(void *drv_data);
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int hdmi_audio_mode_change(struct snd_pcm_substream *substream);
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extern struct snd_pcm_ops snd_intelhad_playback_ops;
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int snd_intelhad_init_audio_ctrl(struct snd_pcm_substream *substream,
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struct snd_intelhad *intelhaddata,
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int flag_silence);
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int snd_intelhad_prog_buffer(struct snd_intelhad *intelhaddata,
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int start, int end);
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int snd_intelhad_invd_buffer(int start, int end);
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int snd_intelhad_read_len(struct snd_intelhad *intelhaddata);
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void had_build_channel_allocation_map(struct snd_intelhad *intelhaddata);
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/* Register access functions */
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int had_get_hwstate(struct snd_intelhad *intelhaddata);
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int had_get_caps(enum had_caps_list query_element, void *capabilties);
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int had_set_caps(enum had_caps_list set_element, void *capabilties);
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int had_read_register(u32 reg_addr, u32 *data);
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int had_write_register(u32 reg_addr, u32 data);
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int had_read_modify(u32 reg_addr, u32 data, u32 mask);
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int hdmi_audio_probe(void *devptr);
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int hdmi_audio_remove(void *pdev);
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#endif /* _INTEL_HDMI_AUDIO_ */
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