[PATCH 1/9] ASoC: mcasp: Fix implicit BLCK divider setting

[Jyri Sarha]

The implicit BLCK divider setting was broken by "ASoC: mcasp: don't
override bclk divider if it was provided by the machine"-patch. After
the BCLK divider is implicitly set for the first time the
mcasp->bclk_div gets a non zero value and the implicit setting is
"turned off".

Signed-off-by: Jyri Sarha <jsarha at ti.com>
---
 sound/soc/davinci/davinci-mcasp.c |   14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/sound/soc/davinci/davinci-mcasp.c 
b/sound/soc/davinci/davinci-mcasp.c
index c28508d..6a6b2ff 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -403,7 +403,8 @@ out:
        return ret;
 }

-static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, int 
div)
+static int __davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id,
+                                     int div, bool explicit)
 {
        struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);

@@ -420,7 +421,8 @@ static int davinci_mcasp_set_clkdiv(struct snd_soc_dai 
*dai, int div_id, int div
                               ACLKXDIV(div - 1), ACLKXDIV_MASK);
                mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG,
                               ACLKRDIV(div - 1), ACLKRDIV_MASK);
-               mcasp->bclk_div = div;
+               if (explicit)
+                       mcasp->bclk_div = div;
                break;

        case 2:         /* BCLK/LRCLK ratio */
@@ -434,6 +436,12 @@ static int davinci_mcasp_set_clkdiv(struct snd_soc_dai 
*dai, int div_id, int div
        return 0;
 }

+static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id,
+                                   int div)
+{
+       return __davinci_mcasp_set_clkdiv(dai, div_id, div, 1);
+}
+
 static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id,
                                    unsigned int freq, int dir)
 {
@@ -738,7 +746,7 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream 
*substream,
                                 "Inaccurate BCLK: %u Hz / %u != %u Hz\n",
                                 mcasp->sysclk_freq, div, bclk_freq);
                }
-               davinci_mcasp_set_clkdiv(cpu_dai, 1, div);
+               __davinci_mcasp_set_clkdiv(cpu_dai, 1, div, 0);
        }

        ret = mcasp_common_hw_param(mcasp, substream->stream,
-- 
1.7.9.5