[PATCH 1/6] phy: phy-bcm-ns-usb3: convert to readl_poll_timeout_atomic()

[PATCH 1/6] phy: phy-bcm-ns-usb3: convert to readl_poll_timeout_atomic()

[Chunfeng Yun]

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/broadcom/phy-bcm-ns-usb3.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/phy/broadcom/phy-bcm-ns-usb3.c b/drivers/phy/broadcom/phy-bcm-ns-usb3.c
index 14f45bc..47b029f 100644
--- a/drivers/phy/broadcom/phy-bcm-ns-usb3.c
+++ b/drivers/phy/broadcom/phy-bcm-ns-usb3.c
@@ -13,6 +13,7 @@
 #include <linux/bcma/bcma.h>
 #include <linux/delay.h>
 #include <linux/err.h>
+#include <linux/iopoll.h>
 #include <linux/mdio.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
@@ -258,29 +259,24 @@ static int bcm_ns_usb3_mdio_probe(struct mdio_device *mdiodev)
  **************************************************/
 
 static int bcm_ns_usb3_wait_reg(struct bcm_ns_usb3 *usb3, void __iomem *addr,
-				u32 mask, u32 value, unsigned long timeout)
+				u32 mask, u32 value, int usec)
 {
-	unsigned long deadline = jiffies + timeout;
 	u32 val;
+	int ret;
 
-	do {
-		val = readl(addr);
-		if ((val & mask) == value)
-			return 0;
-		cpu_relax();
-		udelay(10);
-	} while (!time_after_eq(jiffies, deadline));
+	ret = readl_poll_timeout_atomic(addr, val, ((val & mask) == value),
+					10, usec);
+	if (ret)
+		dev_err(usb3->dev, "Timeout waiting for register %p\n", addr);
 
-	dev_err(usb3->dev, "Timeout waiting for register %p\n", addr);
-
-	return -EBUSY;
+	return ret;
 }
 
 static inline int bcm_ns_usb3_mii_mng_wait_idle(struct bcm_ns_usb3 *usb3)
 {
 	return bcm_ns_usb3_wait_reg(usb3, usb3->ccb_mii + BCMA_CCB_MII_MNG_CTL,
 				    0x0100, 0x0000,
-				    usecs_to_jiffies(BCM_NS_USB3_MII_MNG_TIMEOUT_US));
+				    BCM_NS_USB3_MII_MNG_TIMEOUT_US);
 }
 
 static int bcm_ns_usb3_platform_phy_write(struct bcm_ns_usb3 *usb3, u16 reg,
-- 
1.9.1

[PATCH 2/6] phy: phy-bcm-ns2-usbdrd: convert to readl_poll_timeout_atomic()

[Chunfeng Yun]

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c b/drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c
index 5276259..9630ac1 100644
--- a/drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c
+++ b/drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/irq.h>
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
@@ -87,17 +88,11 @@ struct ns2_phy_data {
 static inline int pll_lock_stat(u32 usb_reg, int reg_mask,
 				struct ns2_phy_driver *driver)
 {
-	int retry = PLL_LOCK_RETRY;
 	u32 val;
 
-	do {
-		udelay(1);
-		val = readl(driver->icfgdrd_regs + usb_reg);
-		if (val & reg_mask)
-			return 0;
-	} while (--retry > 0);
-
-	return -EBUSY;
+	return readl_poll_timeout_atomic(driver->icfgdrd_regs + usb_reg,
+					 val, (val & reg_mask), 1,
+					 PLL_LOCK_RETRY);
 }
 
 static int ns2_drd_phy_init(struct phy *phy)
-- 
1.9.1

[PATCH 3/6] phy: phy-bcm-sr-usb: convert to readl_poll_timeout_atomic()

[Chunfeng Yun]

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/broadcom/phy-bcm-sr-usb.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/phy/broadcom/phy-bcm-sr-usb.c b/drivers/phy/broadcom/phy-bcm-sr-usb.c
index 77c025a..c3e99ad 100644
--- a/drivers/phy/broadcom/phy-bcm-sr-usb.c
+++ b/drivers/phy/broadcom/phy-bcm-sr-usb.c
@@ -5,6 +5,7 @@
 
 #include <linux/delay.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/phy/phy.h>
@@ -109,19 +110,15 @@ static inline void bcm_usb_reg32_setbits(void __iomem *addr, uint32_t set)
 
 static int bcm_usb_pll_lock_check(void __iomem *addr, u32 bit)
 {
-	int retry;
-	u32 rd_data;
+	u32 data;
+	int ret;
 
-	retry = PLL_LOCK_RETRY_COUNT;
-	do {
-		rd_data = readl(addr);
-		if (rd_data & bit)
-			return 0;
-		udelay(1);
-	} while (--retry > 0);
+	ret = readl_poll_timeout_atomic(addr, data, (data & bit), 1,
+					PLL_LOCK_RETRY_COUNT);
+	if (ret)
+		pr_err("%s: FAIL\n", __func__);
 
-	pr_err("%s: FAIL\n", __func__);
-	return -ETIMEDOUT;
+	return ret;
 }
 
 static int bcm_usb_ss_phy_init(struct bcm_usb_phy_cfg *phy_cfg)
-- 
1.9.1

[PATCH 4/6] phy: phy-qcom-apq8064-sata: convert to readl_relaxed_poll_timeout()

[Chunfeng Yun]

Use readl_relaxed_poll_timeout() to simplify code, rename local function
read_poll_timeout() as poll_timeout() to avoid repeated definition

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/qualcomm/phy-qcom-apq8064-sata.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-apq8064-sata.c b/drivers/phy/qualcomm/phy-qcom-apq8064-sata.c
index febe0ae..ce91ae7 100644
--- a/drivers/phy/qualcomm/phy-qcom-apq8064-sata.c
+++ b/drivers/phy/qualcomm/phy-qcom-apq8064-sata.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -72,18 +73,12 @@ struct qcom_apq8064_sata_phy {
 };
 
 /* Helper function to do poll and timeout */
-static int read_poll_timeout(void __iomem *addr, u32 mask)
+static int poll_timeout(void __iomem *addr, u32 mask)
 {
-	unsigned long timeout = jiffies + msecs_to_jiffies(TIMEOUT_MS);
+	u32 val;
 
-	do {
-		if (readl_relaxed(addr) & mask)
-			return 0;
-
-		usleep_range(DELAY_INTERVAL_US, DELAY_INTERVAL_US + 50);
-	} while (!time_after(jiffies, timeout));
-
-	return (readl_relaxed(addr) & mask) ? 0 : -ETIMEDOUT;
+	return readl_relaxed_poll_timeout(addr, val, (val & mask),
+					DELAY_INTERVAL_US, TIMEOUT_MS * 1000);
 }
 
 static int qcom_apq8064_sata_phy_init(struct phy *generic_phy)
@@ -137,21 +132,21 @@ static int qcom_apq8064_sata_phy_init(struct phy *generic_phy)
 	writel_relaxed(0x05, base + UNIPHY_PLL_LKDET_CFG2);
 
 	/* PLL Lock wait */
-	ret = read_poll_timeout(base + UNIPHY_PLL_STATUS, UNIPHY_PLL_LOCK);
+	ret = poll_timeout(base + UNIPHY_PLL_STATUS, UNIPHY_PLL_LOCK);
 	if (ret) {
 		dev_err(phy->dev, "poll timeout UNIPHY_PLL_STATUS\n");
 		return ret;
 	}
 
 	/* TX Calibration */
-	ret = read_poll_timeout(base + SATA_PHY_TX_IMCAL_STAT, SATA_PHY_TX_CAL);
+	ret = poll_timeout(base + SATA_PHY_TX_IMCAL_STAT, SATA_PHY_TX_CAL);
 	if (ret) {
 		dev_err(phy->dev, "poll timeout SATA_PHY_TX_IMCAL_STAT\n");
 		return ret;
 	}
 
 	/* RX Calibration */
-	ret = read_poll_timeout(base + SATA_PHY_RX_IMCAL_STAT, SATA_PHY_RX_CAL);
+	ret = poll_timeout(base + SATA_PHY_RX_IMCAL_STAT, SATA_PHY_RX_CAL);
 	if (ret) {
 		dev_err(phy->dev, "poll timeout SATA_PHY_RX_IMCAL_STAT\n");
 		return ret;
-- 
1.9.1

[PATCH 5/6] phy: phy-pxa-28nm-hsic: convert to readl_poll_timeout()

[Chunfeng Yun]

Use readl_poll_timeout() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/marvell/phy-pxa-28nm-hsic.c | 40 ++++++++++++++++-----------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/phy/marvell/phy-pxa-28nm-hsic.c b/drivers/phy/marvell/phy-pxa-28nm-hsic.c
index ae8370a..31b43d2 100644
--- a/drivers/phy/marvell/phy-pxa-28nm-hsic.c
+++ b/drivers/phy/marvell/phy-pxa-28nm-hsic.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/module.h>
@@ -44,15 +45,12 @@ struct mv_hsic_phy {
 	struct clk		*clk;
 };
 
-static bool wait_for_reg(void __iomem *reg, u32 mask, unsigned long timeout)
+static int wait_for_reg(void __iomem *reg, u32 mask, u32 ms)
 {
-	timeout += jiffies;
-	while (time_is_after_eq_jiffies(timeout)) {
-		if ((readl(reg) & mask) == mask)
-			return true;
-		msleep(1);
-	}
-	return false;
+	u32 val;
+
+	return readl_poll_timeout(reg, val, ((val & mask) == mask),
+				  1000, 1000 * ms);
 }
 
 static int mv_hsic_phy_init(struct phy *phy)
@@ -60,6 +58,7 @@ static int mv_hsic_phy_init(struct phy *phy)
 	struct mv_hsic_phy *mv_phy = phy_get_drvdata(phy);
 	struct platform_device *pdev = mv_phy->pdev;
 	void __iomem *base = mv_phy->base;
+	int ret;
 
 	clk_prepare_enable(mv_phy->clk);
 
@@ -75,14 +74,14 @@ static int mv_hsic_phy_init(struct phy *phy)
 		base + PHY_28NM_HSIC_PLL_CTRL2);
 
 	/* Make sure PHY PLL is locked */
-	if (!wait_for_reg(base + PHY_28NM_HSIC_PLL_CTRL2,
-	    PHY_28NM_HSIC_H2S_PLL_LOCK, HZ / 10)) {
+	ret = wait_for_reg(base + PHY_28NM_HSIC_PLL_CTRL2,
+			   PHY_28NM_HSIC_H2S_PLL_LOCK, 100);
+	if (ret) {
 		dev_err(&pdev->dev, "HSIC PHY PLL not locked after 100mS.");
 		clk_disable_unprepare(mv_phy->clk);
-		return -ETIMEDOUT;
 	}
 
-	return 0;
+	return ret;
 }
 
 static int mv_hsic_phy_power_on(struct phy *phy)
@@ -91,6 +90,7 @@ static int mv_hsic_phy_power_on(struct phy *phy)
 	struct platform_device *pdev = mv_phy->pdev;
 	void __iomem *base = mv_phy->base;
 	u32 reg;
+	int ret;
 
 	reg = readl(base + PHY_28NM_HSIC_CTRL);
 	/* Avoid SE0 state when resume for some device will take it as reset */
@@ -108,20 +108,20 @@ static int mv_hsic_phy_power_on(struct phy *phy)
 	 */
 
 	/* Make sure PHY Calibration is ready */
-	if (!wait_for_reg(base + PHY_28NM_HSIC_IMPCAL_CAL,
-	    PHY_28NM_HSIC_H2S_IMPCAL_DONE, HZ / 10)) {
+	ret = wait_for_reg(base + PHY_28NM_HSIC_IMPCAL_CAL,
+			   PHY_28NM_HSIC_H2S_IMPCAL_DONE, 100);
+	if (ret) {
 		dev_warn(&pdev->dev, "HSIC PHY READY not set after 100mS.");
-		return -ETIMEDOUT;
+		return ret;
 	}
 
 	/* Waiting for HSIC connect int*/
-	if (!wait_for_reg(base + PHY_28NM_HSIC_INT,
-	    PHY_28NM_HSIC_CONNECT_INT, HZ / 5)) {
+	ret = wait_for_reg(base + PHY_28NM_HSIC_INT,
+			   PHY_28NM_HSIC_CONNECT_INT, 200);
+	if (ret)
 		dev_warn(&pdev->dev, "HSIC wait for connect interrupt timeout.");
-		return -ETIMEDOUT;
-	}
 
-	return 0;
+	return ret;
 }
 
 static int mv_hsic_phy_power_off(struct phy *phy)
-- 
1.9.1

[PATCH 6/6] phy: phy-pxa-28nm-usb2: convert to readl_poll_timeout()

[Chunfeng Yun]

Use readl_poll_timeout() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/phy/marvell/phy-pxa-28nm-usb2.c | 33 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 18 deletions(-)

diff --git a/drivers/phy/marvell/phy-pxa-28nm-usb2.c b/drivers/phy/marvell/phy-pxa-28nm-usb2.c
index 9fd8817..a175ae9 100644
--- a/drivers/phy/marvell/phy-pxa-28nm-usb2.c
+++ b/drivers/phy/marvell/phy-pxa-28nm-usb2.c
@@ -13,6 +13,7 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/err.h>
 #include <linux/clk.h>
 #include <linux/module.h>
@@ -138,15 +139,12 @@ struct mv_usb2_phy {
 	struct clk		*clk;
 };
 
-static bool wait_for_reg(void __iomem *reg, u32 mask, unsigned long timeout)
+static int wait_for_reg(void __iomem *reg, u32 mask, u32 ms)
 {
-	timeout += jiffies;
-	while (time_is_after_eq_jiffies(timeout)) {
-		if ((readl(reg) & mask) == mask)
-			return true;
-		msleep(1);
-	}
-	return false;
+	u32 val;
+
+	return readl_poll_timeout(reg, val, ((val & mask) == mask),
+				   1000, 1000 * ms);
 }
 
 static int mv_usb2_phy_28nm_init(struct phy *phy)
@@ -208,24 +206,23 @@ static int mv_usb2_phy_28nm_init(struct phy *phy)
 	 */
 
 	/* Make sure PHY Calibration is ready */
-	if (!wait_for_reg(base + PHY_28NM_CAL_REG,
-	    PHY_28NM_PLL_PLLCAL_DONE | PHY_28NM_PLL_IMPCAL_DONE,
-	    HZ / 10)) {
+	ret = wait_for_reg(base + PHY_28NM_CAL_REG,
+			   PHY_28NM_PLL_PLLCAL_DONE | PHY_28NM_PLL_IMPCAL_DONE,
+			   100);
+	if (ret) {
 		dev_warn(&pdev->dev, "USB PHY PLL calibrate not done after 100mS.");
-		ret = -ETIMEDOUT;
 		goto err_clk;
 	}
-	if (!wait_for_reg(base + PHY_28NM_RX_REG1,
-	    PHY_28NM_RX_SQCAL_DONE, HZ / 10)) {
+	ret = wait_for_reg(base + PHY_28NM_RX_REG1,
+			   PHY_28NM_RX_SQCAL_DONE, 100);
+	if (ret) {
 		dev_warn(&pdev->dev, "USB PHY RX SQ calibrate not done after 100mS.");
-		ret = -ETIMEDOUT;
 		goto err_clk;
 	}
 	/* Make sure PHY PLL is ready */
-	if (!wait_for_reg(base + PHY_28NM_PLL_REG0,
-	    PHY_28NM_PLL_READY, HZ / 10)) {
+	ret = wait_for_reg(base + PHY_28NM_PLL_REG0, PHY_28NM_PLL_READY, 100);
+	if (ret) {
 		dev_warn(&pdev->dev, "PLL_READY not set after 100mS.");
-		ret = -ETIMEDOUT;
 		goto err_clk;
 	}
 
-- 
1.9.1

Re: [PATCH 1/6] phy: phy-bcm-ns-usb3: convert to readl_poll_timeout_atomic()

[Vinod Koul]

On 25-08-20, 10:03, Chunfeng Yun wrote:
> Use readl_poll_timeout_atomic() to simplify code

Applied all, thanks

-- 
~Vinod