ASoC: davinci: fix codec start and stop functions
According to DM365 voice codec data sheet at [1], before starting
recording or playback, ADC/DAC modules should follow a reset and
enable cycle. Writing a 1 to the ADC/DAC bit in the register resets
the module and clearing the bit to 0 will enable the module. But the
driver seems to be doing the reverse of it.
[1] http://focus.ti.com/lit/ug/sprufi9b/sprufi9b.pdf
Signed-off-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
diff --git a/sound/soc/davinci/davinci-vcif.c b/sound/soc/davinci/davinci-vcif.c
index 9259f1f..c957e9e 100644
--- a/sound/soc/davinci/davinci-vcif.c
+++ b/sound/soc/davinci/davinci-vcif.c
@@ -62,9 +62,9 @@
w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 1);
+ MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 0);
else
- MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 1);
+ MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 0);
writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
}
@@ -80,9 +80,9 @@
/* Reset transmitter/receiver and sample rate/frame sync generators */
w = readl(davinci_vc->base + DAVINCI_VC_CTRL);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 0);
+ MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTDAC, 1);
else
- MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 0);
+ MOD_REG_BIT(w, DAVINCI_VC_CTRL_RSTADC, 1);
writel(w, davinci_vc->base + DAVINCI_VC_CTRL);
}