sound/x86/intel_hdmi_audio.h

   1 /*
   2  * Copyright (C) 2016 Intel Corporation
   3  *  Authors:    Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>
   4  *              Ramesh Babu K V <ramesh.babu@intel.com>
   5  *              Vaibhav Agarwal <vaibhav.agarwal@intel.com>
   6  *              Jerome Anand <jerome.anand@intel.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining
   9  * a copy of this software and associated documentation files
  10  * (the "Software"), to deal in the Software without restriction,
  11  * including without limitation the rights to use, copy, modify, merge,
  12  * publish, distribute, sublicense, and/or sell copies of the Software,
  13  * and to permit persons to whom the Software is furnished to do so,
  14  * subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial
  18  * portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  24  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  25  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  26  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  27  * SOFTWARE.
  28  */
  29
  30 #ifndef _INTEL_HDMI_AUDIO_H_
  31 #define _INTEL_HDMI_AUDIO_H_
  32
  33 #include <linux/types.h>
  34 #include <sound/initval.h>
  35 #include <linux/version.h>
  36 #include <linux/pm_runtime.h>
  37 #include <sound/asoundef.h>
  38 #include <sound/control.h>
  39 #include <sound/pcm.h>
  40 #include <drm/drm_edid.h>
  41 #include "intel_hdmi_lpe_audio.h"
  42
  43 #define PCM_INDEX               0
  44 #define MAX_PB_STREAMS          1
  45 #define MAX_CAP_STREAMS         0
  46 #define HDMI_AUDIO_DRIVER       "hdmi-audio"
  47
  48 #define HDMI_INFO_FRAME_WORD1   0x000a0184
  49 #define DP_INFO_FRAME_WORD1     0x00441b84
  50 #define FIFO_THRESHOLD          0xFE
  51 #define DMA_FIFO_THRESHOLD      0x7
  52 #define BYTES_PER_WORD          0x4
  53
  54 /* Sampling rate as per IEC60958 Ver 3 */
  55 #define CH_STATUS_MAP_32KHZ     0x3
  56 #define CH_STATUS_MAP_44KHZ     0x0
  57 #define CH_STATUS_MAP_48KHZ     0x2
  58 #define CH_STATUS_MAP_88KHZ     0x8
  59 #define CH_STATUS_MAP_96KHZ     0xA
  60 #define CH_STATUS_MAP_176KHZ    0xC
  61 #define CH_STATUS_MAP_192KHZ    0xE
  62
  63 #define MAX_SMPL_WIDTH_20       0x0
  64 #define MAX_SMPL_WIDTH_24       0x1
  65 #define SMPL_WIDTH_16BITS       0x1
  66 #define SMPL_WIDTH_24BITS       0x5
  67 #define CHANNEL_ALLOCATION      0x1F
  68 #define VALID_DIP_WORDS         3
  69 #define LAYOUT0                 0
  70 #define LAYOUT1                 1
  71 #define SWAP_LFE_CENTER         0x00fac4c8
  72 #define AUD_CONFIG_CH_MASK      0x70
  73
  74 struct pcm_stream_info {
  75         struct snd_pcm_substream *substream;
  76         u64             buffer_rendered;
  77         u32             ring_buf_size;
  78         int substream_refcount;
  79         bool running;
  80 };
  81
  82 struct ring_buf_info {
  83         u32     buf_addr;
  84         u32     buf_size;
  85         u8      is_valid;
  86 };
  87
  88 /**
  89  * struct snd_intelhad - intelhad driver structure
  90  *
  91  * @card: ptr to hold card details
  92  * @drv_status: driver status
  93  * @buf_info: ring buffer info
  94  * @stream_info: stream information
  95  * @eld: holds ELD info
  96  * @curr_buf: pointer to hold current active ring buf
  97  * @valid_buf_cnt: ring buffer count for stream
  98  * @had_spinlock: driver lock
  99  * @aes_bits: IEC958 status bits
 100  * @buff_done: id of current buffer done intr
 101  * @dev: platoform device handle
 102  * @chmap: holds channel map info
 103  * @underrun_count: PCM stream underrun counter
 104  */
 105 struct snd_intelhad {
 106         struct snd_card *card;
 107         enum had_drv_status     drv_status;
 108         struct          ring_buf_info buf_info[HAD_NUM_OF_RING_BUFS];
 109         struct          pcm_stream_info stream_info;
 110         unsigned char   eld[HDMI_MAX_ELD_BYTES];
 111         bool dp_output;
 112         enum            intel_had_aud_buf_type curr_buf;
 113         int             valid_buf_cnt;
 114         unsigned int    aes_bits;
 115         spinlock_t had_spinlock;
 116         enum            intel_had_aud_buf_type buff_done;
 117         struct device *dev;
 118         struct snd_pcm_chmap *chmap;
 119         int underrun_count;
 120         int tmds_clock_speed;
 121         int link_rate;
 122
 123         /* internal stuff */
 124         int irq;
 125         void __iomem *mmio_start;
 126         unsigned int had_config_offset;
 127         struct work_struct hdmi_audio_wq;
 128         struct mutex mutex; /* for protecting chmap and eld */
 129 };
 130
 131 #endif /* _INTEL_HDMI_AUDIO_ */