linux-kernel - [PATCH 1/4] soundwire: intel_ace2x: cleanup DOAIS/DODS settings

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Message-Id: <20240429004321.2399754-2-yung-chuan.liao@linux.intel.com>
Date: Mon, 29 Apr 2024 00:43:18 +0000
From: Bard Liao <yung-chuan.liao@...ux.intel.com>
To: linux-sound@...r.kernel.org,
	vkoul@...nel.org
Cc: vinod.koul@...aro.org,
	linux-kernel@...r.kernel.org,
	pierre-louis.bossart@...ux.intel.com,
	bard.liao@...el.com
Subject: [PATCH 1/4] soundwire: intel_ace2x: cleanup DOAIS/DODS settings

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

Use two variables to save the settings, in preparation of a follow-up
change to read values from _DSD properties.

Starting with this patch, the bitfields will be reordered and listed
MSB-first, as shown in the hardware documentation.

Also note that the default for DOAIS is changed from 0x1 (copy-pasted
value?) to 0x3 (hardware default).

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/intel_ace2x.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c
index 75e629c938dc..32b538cd6d66 100644
--- a/drivers/soundwire/intel_ace2x.c
+++ b/drivers/soundwire/intel_ace2x.c
@@ -25,12 +25,17 @@
 static void intel_shim_vs_init(struct sdw_intel *sdw)
 {
 	void __iomem *shim_vs = sdw->link_res->shim_vs;
+	u16 doais;
+	u16 dods;
 	u16 act;
 
+	doais = 0x3;
+	dods = 0x1;
+
 	act = intel_readw(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL);
-	u16p_replace_bits(&act, 0x1, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS);
+	u16p_replace_bits(&act, doais, SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS);
+	u16p_replace_bits(&act, dods, SDW_SHIM2_INTEL_VS_ACTMCTL_DODS);
 	act |= SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE;
-	act |=  SDW_SHIM2_INTEL_VS_ACTMCTL_DODS;
 	intel_writew(shim_vs, SDW_SHIM2_INTEL_VS_ACTMCTL, act);
 	usleep_range(10, 15);
 }
-- 
2.34.1