diff options
| author | Chen Liangjun <b36089@freescale.com> | 2012-07-18 11:11:39 +0800 |
|---|---|---|
| committer | Terry Lv <r65388@freescale.com> | 2012-07-25 13:11:06 +0800 |
| commit | b9ccbfeb48634f6ab4865faed4127661afe6ec79 (patch) | |
| tree | 22a8b203e744ccbeda7c0ee72536ac9e37aa66d9 /drivers/mxc/asrc | |
| parent | 64e252b87eaf8b5fd949464c61f3ab86df6987a0 (diff) | |
ENGR00217509 ASRC:Use ideal ratio mode for p2p playback
When use ESAI p2p playback, ASRC is configured no ratio mode.
Due to an IC bug(TKT117009), user may hear noise sometimes.
In this patch, use ideal ratio mode for ESAI p2p playback to avoid
noise.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
Diffstat (limited to 'drivers/mxc/asrc')
| -rw-r--r-- | drivers/mxc/asrc/mxc_asrc.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/mxc/asrc/mxc_asrc.c b/drivers/mxc/asrc/mxc_asrc.c index db20cbf2971a..4ef31c8fd6db 100644 --- a/drivers/mxc/asrc/mxc_asrc.c +++ b/drivers/mxc/asrc/mxc_asrc.c @@ -583,6 +583,26 @@ int asrc_config_pair(struct asrc_config *config) } } + if ((config->inclk == INCLK_ASRCK1_CLK) && + (config->outclk == OUTCLK_ESAI_TX)) { + reg = __raw_readl(g_asrc->vaddr + ASRC_ASRCTR_REG); + reg &= ~(1 << (20 + config->pair)); + reg |= (0x03 << (13 + (config->pair << 1))); + __raw_writel(reg, g_asrc->vaddr + ASRC_ASRCTR_REG); + err = asrc_set_clock_ratio(config->pair, + config->input_sample_rate, + config->output_sample_rate); + if (err < 0) + return err; + + err = asrc_set_process_configuration(config->pair, + config->input_sample_rate, + config-> + output_sample_rate); + if (err < 0) + return err; + } + /* Config input and output wordwidth */ reg = __raw_readl( g_asrc->vaddr + ASRC_ASRMCR1A_REG + (config->pair << 2)); |