Re: [PATCH 3/7] ASoC: codecs: tx-macro: Change mic control registers to volatile

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On 9/21/2021 2:18 PM, Srinivas Kandagatla wrote:


On 21/09/2021 08:30, Srinivasa Rao Mandadapu wrote:

On 9/20/2021 6:54 PM, Srinivas Kandagatla wrote:
Thanks for your time Srini!!

On 20/09/2021 08:35, Srinivasa Rao Mandadapu wrote:
Update amic and dmic related tx macro control registers to volatile

Fixes: c39667ddcfc5 (ASoC: codecs: lpass-tx-macro: add support for lpass tx macro)

Signed-off-by: Venkata Prasad Potturu <potturu@xxxxxxxxxxxxxx>
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>
---
  sound/soc/codecs/lpass-tx-macro.c | 13 +++++++++++++
  1 file changed, 13 insertions(+)

diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c
index 9273724..e65b592 100644
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -423,6 +423,13 @@ static bool tx_is_volatile_register(struct device *dev, unsigned int reg)
      case CDC_TX_TOP_CSR_SWR_DMIC1_CTL:
      case CDC_TX_TOP_CSR_SWR_DMIC2_CTL:
      case CDC_TX_TOP_CSR_SWR_DMIC3_CTL:
+    case CDC_TX_TOP_CSR_SWR_AMIC0_CTL:
+    case CDC_TX_TOP_CSR_SWR_AMIC1_CTL:
+    case CDC_TX_CLK_RST_CTRL_MCLK_CONTROL:
+    case CDC_TX_CLK_RST_CTRL_FS_CNT_CONTROL:
+    case CDC_TX_CLK_RST_CTRL_SWR_CONTROL:
+    case CDC_TX_TOP_CSR_SWR_CTRL:
+    case CDC_TX0_TX_PATH_SEC7:

Why are these marked as Volatile?
Can you provide some details on the issue that you are seeing?

--srini

Without volatile these registers are not reflecting in Hardware and playback and capture is not working.

Will do recheck and keep only required registers as volatile.

This sounds like a total hack to me,

this might be happening in your case:

The default values for this register are different to actual defaults.
Ex: CDC_TX_TOP_CSR_SWR_AMIC0_CTL default is 0x00
so writing 0x0 to this register will be no-op as there is no change in the register value as compared to default value as per regmap.

In you case make sure the hardware default values are correctly reflected in tx_defaults array.

The default values in tx_defaults are proper. But same value is not reflecting in Hardware, but In Cache it's reflecting set value.


Then setting the desired value should work.


--srini






          return true;
      }
      return false;
@@ -1674,6 +1681,12 @@ static int tx_macro_component_probe(struct snd_soc_component *comp)         snd_soc_component_update_bits(comp, CDC_TX0_TX_PATH_SEC7, 0x3F,
                        0x0A);
+    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_AMIC0_CTL, 0xFF, 0x00); +    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_AMIC1_CTL, 0xFF, 0x00); +    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_DMIC0_CTL, 0xFF, 0x00); +    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_DMIC1_CTL, 0xFF, 0x00); +    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_DMIC2_CTL, 0xFF, 0x00); +    snd_soc_component_update_bits(comp, CDC_TX_TOP_CSR_SWR_DMIC3_CTL, 0xFF, 0x00);
        return 0;
  }

--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.




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