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Commit 34b51819 authored by Vatsal Bucha's avatar Vatsal Bucha
Browse files

ASoC: wcd937x: Reduce latency in case of impedance detection 



Bulk read api does not work properly for swr regmap,
causing failure/delay in impedance detection.
Use regmap read api to avoid the issue.

CRs-Fixed: 2301798
Change-Id: I5727cfcb7846f40f5b0f75b7976b492e2a2bfde0
Signed-off-by: default avatarVatsal Bucha <vbucha@codeaurora.org>
parent 186f8478

asoc/codecs/wcd937x/wcd937x-mbhc.c

+6 −4
Original line number Diff line number Diff line
@@ -413,8 +413,10 @@ static inline void wcd937x_mbhc_get_result_params(struct wcd937x_priv *wcd937x, 
ramp_down:

	i = 0;

	while (x1) {

		regmap_bulk_read(wcd937x->regmap,

				 WCD937X_ANA_MBHC_RESULT_1, (u8 *)&val, 2);

		regmap_read(wcd937x->regmap, WCD937X_ANA_MBHC_RESULT_1, &val);

		regmap_read(wcd937x->regmap, WCD937X_ANA_MBHC_RESULT_2, &val1);

		val = val << 0x8;

		val |= val1;

		x1 = WCD937X_MBHC_GET_X1(val);

		i++;

		if (i == WCD937X_ZDET_NUM_MEASUREMENTS)
@@ -972,7 +974,7 @@ int wcd937x_mbhc_post_ssr_init(struct wcd937x_mbhc *mbhc, 


	wcd_mbhc_deinit(wcd_mbhc);

	ret = wcd_mbhc_init(wcd_mbhc, codec, &mbhc_cb, &intr_ids,

			    wcd_mbhc_registers, false);

			    wcd_mbhc_registers, WCD937X_ZDET_SUPPORTED);

	if (ret) {

		dev_err(codec->dev, "%s: mbhc initialization failed\n",

			__func__);
@@ -1024,7 +1026,7 @@ int wcd937x_mbhc_init(struct wcd937x_mbhc **mbhc, struct snd_soc_codec *codec, 


	ret = wcd_mbhc_init(wcd_mbhc, codec, &mbhc_cb,

				&intr_ids, wcd_mbhc_registers,

				false);

				WCD937X_ZDET_SUPPORTED);

	if (ret) {

		dev_err(codec->dev, "%s: mbhc initialization failed\n",

			__func__);