Re: [PATCH v2 2/2] ASoC: codecs: wsa883x: Use proper shutdown GPIO polarity

11 Nov 2022

On 10/11/2022 13:35, Krzysztof Kozlowski wrote:
...
The shutdown GPIO is active low (SD_N), but this depends on actual board
layout.  Linux drivers should only care about logical state, where high
(1) means shutdown and low (0) means do not shutdown.
Invert the GPIO to match logical value.
Fixes: 43b8c7dc85a1 ("ASoC: codecs: add wsa883x amplifier support")
Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org

Reviewed-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org
...
Changes since v1:

None.


sound/soc/codecs/wsa883x.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c
index c7b10bbfba7e..77a7dd3cf495 100644
--- a/sound/soc/codecs/wsa883x.c
+++ b/sound/soc/codecs/wsa883x.c
@@ -1392,7 +1392,7 @@ static int wsa883x_probe(struct sdw_slave *pdev,
   }
wsa883x->sd_n = devm_gpiod_get_optional(&pdev->dev, "powerdown",

				GPIOD_FLAGS_BIT_NONEXCLUSIVE);




				GPIOD_FLAGS_BIT_NONEXCLUSIVE | GPIOD_OUT_HIGH);

if (IS_ERR(wsa883x->sd_n)) {
dev_err(&pdev->dev, "Shutdown Control GPIO not found\n");
ret = PTR_ERR(wsa883x->sd_n);

@@ -1411,7 +1411,7 @@ static int wsa883x_probe(struct sdw_slave *pdev,
   pdev->prop.simple_clk_stop_capable = true;
   pdev->prop.sink_dpn_prop = wsa_sink_dpn_prop;
   pdev->prop.scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;

gpiod_direction_output(wsa883x->sd_n, 1);


gpiod_direction_output(wsa883x->sd_n, 0);
wsa883x->regmap = devm_regmap_init_sdw(pdev, &wsa883x_regmap_config);
if (IS_ERR(wsa883x->regmap)) {



    