linux-kernel - [PATCH 12/13] phy: qcom-qmp-usb: clean up power-down handling

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Message-Id: <20220928152822.30687-13-johan+linaro@kernel.org>
Date:   Wed, 28 Sep 2022 17:28:21 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 12/13] phy: qcom-qmp-usb: clean up power-down handling

Always define the POWER_DOWN_CONTROL register instead of falling back to
the v2 (and v3) offset during power on and power off.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index f8685eddbf80..8acb5a3aeb95 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -126,6 +126,7 @@ static const unsigned int usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = {
 	[QPHY_PCS_AUTONOMOUS_MODE_CTRL]	= 0x0d4,
 	[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR]  = 0x0d8,
 	[QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x178,
+	[QPHY_PCS_POWER_DOWN_CONTROL]	= 0x04,
 };
 
 static const unsigned int qmp_v3_usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = {
@@ -135,6 +136,7 @@ static const unsigned int qmp_v3_usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = {
 	[QPHY_PCS_AUTONOMOUS_MODE_CTRL]	= 0x0d8,
 	[QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR]  = 0x0dc,
 	[QPHY_PCS_LFPS_RXTERM_IRQ_STATUS] = 0x170,
+	[QPHY_PCS_POWER_DOWN_CONTROL]	= 0x04,
 };
 
 static const unsigned int qmp_v4_usb3phy_regs_layout[QPHY_LAYOUT_SIZE] = {
@@ -2164,13 +2166,8 @@ static int qmp_usb_init(struct phy *phy)
 		qphy_clrbits(dp_com, QPHY_V3_DP_COM_SW_RESET, SW_RESET);
 	}
 
-	if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL])
-		qphy_setbits(pcs,
-			     cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
-			     cfg->pwrdn_ctrl);
-	else
-		qphy_setbits(pcs, QPHY_V2_PCS_POWER_DOWN_CONTROL,
-			     cfg->pwrdn_ctrl);
+	qphy_setbits(pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+			cfg->pwrdn_ctrl);
 
 	return 0;
 
@@ -2277,13 +2274,8 @@ static int qmp_usb_power_off(struct phy *phy)
 	qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
 
 	/* Put PHY into POWER DOWN state: active low */
-	if (cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL]) {
-		qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
-			     cfg->pwrdn_ctrl);
-	} else {
-		qphy_clrbits(qphy->pcs, QPHY_V2_PCS_POWER_DOWN_CONTROL,
-				cfg->pwrdn_ctrl);
-	}
+	qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+			cfg->pwrdn_ctrl);
 
 	return 0;
 }
-- 
2.35.1