ASoC: codecs: wsa881x: fix unnecessary initialisation

The soundwire update_status() callback may be called multiple times with
the same ATTACHED status but initialisation should only be done when
transitioning from UNATTACHED to ATTACHED.

Fixes: a0aab9e1404a ("ASoC: codecs: add wsa881x amplifier support")
Cc: stable@vger.kernel.org	# 5.6
Cc: Srinivas Kandagatla <srini@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://patch.msgid.link/20260102111413.9605-3-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c
index d7aca6567c2de1ec36e9f36aa82463bdbf3be27e..2fc234adca5f7ee11afbc572bb36e8b948f6462e 100644 (file)
--- a/sound/soc/codecs/wsa881x.c
+++ b/sound/soc/codecs/wsa881x.c
@@ -678,6 +678,7 @@ struct wsa881x_priv {
         */
        unsigned int sd_n_val;
        int active_ports;
+       bool hw_init;
        bool port_prepared[WSA881X_MAX_SWR_PORTS];
        bool port_enable[WSA881X_MAX_SWR_PORTS];
 };
@@ -687,6 +688,9 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
        struct regmap *rm = wsa881x->regmap;
        unsigned int val = 0;
 
+       if (wsa881x->hw_init)
+               return;
+
        regmap_register_patch(wsa881x->regmap, wsa881x_rev_2_0,
                              ARRAY_SIZE(wsa881x_rev_2_0));
 
@@ -724,6 +728,8 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x)
        regmap_update_bits(rm, WSA881X_OTP_REG_28, 0x3F, 0x3A);
        regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG1, 0xFF, 0xB2);
        regmap_update_bits(rm, WSA881X_BONGO_RESRV_REG2, 0xFF, 0x05);
+
+       wsa881x->hw_init = true;
 }
 
 static int wsa881x_component_probe(struct snd_soc_component *comp)
@@ -1067,6 +1073,9 @@ static int wsa881x_update_status(struct sdw_slave *slave,
 {
        struct wsa881x_priv *wsa881x = dev_get_drvdata(&slave->dev);
 
+       if (status == SDW_SLAVE_UNATTACHED)
+               wsa881x->hw_init = false;
+
        if (status == SDW_SLAVE_ATTACHED && slave->dev_num > 0)
                wsa881x_init(wsa881x);