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dsp: add support to set custom channel mixer coefficients

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Enhance Channel Mixer control for MultiMedia Frontends to
get custom channel mixer coefficients from userspace and
use it during device routings to control stream to device
channel mappings.

Change-Id: Ifedac25de5ae6bad1092b66ec405bba66a80f608
Signed-off-by: Cong Tang <congt@codeaurora.org>
Signed-off-by: Dhananjay Kumar <dhakumar@codeaurora.org>
This commit is contained in:
Dhananjay Kumar
2018-12-11 18:05:59 +05:30
committed by Gerrit - the friendly Code Review server
parent a27b0c32ea
commit defd81b1a5
4 changed files with 52 additions and 81 deletions
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14
dsp/q6asm.c
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@@ -114,8 +114,6 @@ static int q6asm_memory_map_regions(struct audio_client *ac, int dir,
static int q6asm_memory_unmap_regions(struct audio_client *ac, int dir);
static void q6asm_reset_buf_state(struct audio_client *ac);
static int q6asm_map_channels(u8 *channel_mapping, uint32_t channels,
bool use_back_flavor);
void *q6asm_mmap_apr_reg(void);
static int q6asm_is_valid_session(struct apr_client_data *data, void *priv);
@@ -5420,7 +5418,16 @@ fail_cmd:
}
EXPORT_SYMBOL(q6asm_enc_cfg_blk_pcm_native);
static int q6asm_map_channels(u8 *channel_mapping, uint32_t channels,
/*
* q6asm_map_channels:
* Provide default asm channel mapping for given channel count.
*
* @channel_mapping: buffer pointer to write back channel maps.
* @channels: channel count for which channel map is required.
* @use_back_flavor: use back channels instead of surround channels.
* Returns 0 for success, -EINVAL for unsupported channel count.
*/
int q6asm_map_channels(u8 *channel_mapping, uint32_t channels,
bool use_back_flavor)
{
u8 *lchannel_mapping;
@@ -5528,6 +5535,7 @@ static int q6asm_map_channels(u8 *channel_mapping, uint32_t channels,
}
return 0;
}
EXPORT_SYMBOL(q6asm_map_channels);
/**
* q6asm_enable_sbrps -