Commit: cad9b0afb809af7e7710dd8d3cf48e79eab5e276 - linux_3.x_apsh4a0a (git)

linux-3.0.x for AP-SH4A-0A Board

Commit MetaInfo

• Revisão: cad9b0afb809af7e7710dd8d3cf48e79eab5e276 (tree)
• Hora: 2011-08-05 13:58:33
• Autor: Rajashekhara, Sudhakar <sudhakar.raj@ti.c...>
• Commiter: Greg Kroah-Hartman

Mensagem de Log

ASoC: davinci: fix codec start and stop functions

commit 3012f43eaf7592d8121426918e43e3b5db013aff upstream.

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 <[e-mail]>
Acked-by: Liam Girdwood <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Mudança Sumário

• modified: sound/soc/davinci/davinci-vcif.c

Diff

--- a/sound/soc/davinci/davinci-vcif.c
+++ b/sound/soc/davinci/davinci-vcif.c
@@ -62,9 +62,9 @@ static void davinci_vcif_start(struct snd_pcm_substream *substream)
 	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 @@ static void davinci_vcif_stop(struct snd_pcm_substream *substream)
 	/* 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);
 }