linux-kernel - [PATCH 03/16] phy: qcom-qmp-pcie: drop unused runtime PM implementation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed,  7 Sep 2022 13:07:15 +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 03/16] phy: qcom-qmp-pcie: drop unused runtime PM implementation

Drop the unused and incomplete runtime PM implementation, which was
only used by USB PHYs before splitting the QMP driver.

Note that the runtime PM was never disabled (and state restored) on
driver unbind.

This effectively reverts commit ac0d239936bd ("phy: qcom-qmp: Add
support for runtime PM").

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 38 ------------------------
 1 file changed, 38 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 2923977b205a..860620972d8a 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -53,20 +53,6 @@
 #define USB3_MODE				BIT(0) /* enables USB3 mode */
 #define DP_MODE					BIT(1) /* enables DP mode */
 
-/* QPHY_PCS_AUTONOMOUS_MODE_CTRL register bits */
-#define ARCVR_DTCT_EN				BIT(0)
-#define ALFPS_DTCT_EN				BIT(1)
-#define ARCVR_DTCT_EVENT_SEL			BIT(4)
-
-/* QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR register bits */
-#define IRQ_CLEAR				BIT(0)
-
-/* QPHY_PCS_LFPS_RXTERM_IRQ_STATUS register bits */
-#define RCVR_DETECT				BIT(0)
-
-/* QPHY_V3_PCS_MISC_CLAMP_ENABLE register bits */
-#define CLAMP_EN				BIT(0) /* enables i/o clamp_n */
-
 #define PHY_INIT_COMPLETE_TIMEOUT		10000
 #define POWER_DOWN_DELAY_US_MIN			10
 #define POWER_DOWN_DELAY_US_MAX			11
@@ -125,9 +111,6 @@ enum qphy_reg_layout {
 	QPHY_START_CTRL,
 	QPHY_PCS_READY_STATUS,
 	QPHY_PCS_STATUS,
-	QPHY_PCS_AUTONOMOUS_MODE_CTRL,
-	QPHY_PCS_LFPS_RXTERM_IRQ_CLEAR,
-	QPHY_PCS_LFPS_RXTERM_IRQ_STATUS,
 	QPHY_PCS_POWER_DOWN_CONTROL,
 	/* PCS_MISC registers */
 	QPHY_PCS_MISC_TYPEC_CTRL,
@@ -2153,15 +2136,6 @@ static int qmp_pcie_disable(struct phy *phy)
 	return qmp_pcie_exit(phy);
 }
 
-static int qmp_pcie_set_mode(struct phy *phy, enum phy_mode mode, int submode)
-{
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
-
-	qphy->mode = mode;
-
-	return 0;
-}
-
 static int qmp_pcie_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
@@ -2285,7 +2259,6 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
 static const struct phy_ops qmp_pcie_ops = {
 	.power_on	= qmp_pcie_enable,
 	.power_off	= qmp_pcie_disable,
-	.set_mode	= qmp_pcie_set_mode,
 	.owner		= THIS_MODULE,
 };
 
@@ -2474,14 +2447,6 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	if (!qmp->phys)
 		return -ENOMEM;
 
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-	/*
-	 * Prevent runtime pm from being ON by default. Users can enable
-	 * it using power/control in sysfs.
-	 */
-	pm_runtime_forbid(dev);
-
 	id = 0;
 	for_each_available_child_of_node(dev->of_node, child) {
 		/* Create per-lane phy */
@@ -2509,13 +2474,10 @@ static int qmp_pcie_probe(struct platform_device *pdev)
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 	if (!IS_ERR(phy_provider))
 		dev_info(dev, "Registered Qcom-QMP phy\n");
-	else
-		pm_runtime_disable(dev);
 
 	return PTR_ERR_OR_ZERO(phy_provider);
 
 err_node_put:
-	pm_runtime_disable(dev);
 	of_node_put(child);
 	return ret;
 }
-- 
2.35.1