diff mbox series

[3/6] usb: chipidea: usbmisc_imx: Use GENMASK/FIELD_PREP for bitfields

Message ID 20221011082924.884123-4-s.hauer@pengutronix.de
State New
Headers show
Series usb: chipidea: Export more phy tuning parameters to device tree | expand

Commit Message

Sascha Hauer Oct. 11, 2022, 8:29 a.m. UTC 
GENMASK and FIELD_PREP offer a convenient unified way to manipulate
bitfields in registers without having to define mask and shift
separately. Broaden the use of this mechanism by converting usbmisc_imx
over to it. No functional change intended.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/usb/chipidea/usbmisc_imx.c | 116 +++++++++++++++--------------
 1 file changed, 59 insertions(+), 57 deletions(-)
diff mbox series

Patch

diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index e1b4b7f9b3f31..95f2ba01c0df1 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -9,24 +9,23 @@ 
 #include <linux/io.h>
 #include <linux/delay.h>
 #include <linux/usb/otg.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
 
 #include "ci_hdrc_imx.h"
 
 #define MX25_USB_PHY_CTRL_OFFSET	0x08
 #define MX25_BM_EXTERNAL_VBUS_DIVIDER	BIT(23)
 
-#define MX25_EHCI_INTERFACE_SINGLE_UNI	(2 << 0)
-#define MX25_EHCI_INTERFACE_DIFF_UNI	(0 << 0)
-#define MX25_EHCI_INTERFACE_MASK	(0xf)
+#define MX25_EHCI_INTERFACE_SINGLE_UNI	2
+#define MX25_EHCI_INTERFACE_DIFF_UNI	0
 
-#define MX25_OTG_SIC_SHIFT		29
-#define MX25_OTG_SIC_MASK		(0x3 << MX25_OTG_SIC_SHIFT)
+#define MX25_OTG_SIC			GENMASK(30, 29)
 #define MX25_OTG_PM_BIT			BIT(24)
 #define MX25_OTG_PP_BIT			BIT(11)
 #define MX25_OTG_OCPOL_BIT		BIT(3)
 
-#define MX25_H1_SIC_SHIFT		21
-#define MX25_H1_SIC_MASK		(0x3 << MX25_H1_SIC_SHIFT)
+#define MX25_H1_SIC			GENMASK(22, 21)
 #define MX25_H1_PP_BIT			BIT(18)
 #define MX25_H1_PM_BIT			BIT(16)
 #define MX25_H1_IPPUE_UP_BIT		BIT(7)
@@ -42,10 +41,10 @@ 
 #define MX53_USB_OTG_PHY_CTRL_0_OFFSET	0x08
 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET	0x0c
 #define MX53_USB_CTRL_1_OFFSET	        0x10
-#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x3 << 2)
-#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2)
-#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x3 << 6)
-#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6)
+#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL	GENMASK(3, 2)
+#define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI 1
+#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL	GENMASK(5, 4)
+#define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI 1
 #define MX53_USB_UH2_CTRL_OFFSET	0x14
 #define MX53_USB_UH3_CTRL_OFFSET	0x18
 #define MX53_USB_CLKONOFF_CTRL_OFFSET	0x24
@@ -85,26 +84,24 @@ 
 #define MX6_USB_OTG1_PHY_CTRL		0x18
 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */
 #define MX6_USB_OTG2_PHY_CTRL		0x1c
-#define MX6SX_USB_VBUS_WAKEUP_SOURCE(v)	(v << 8)
-#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS	MX6SX_USB_VBUS_WAKEUP_SOURCE(0)
-#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID	MX6SX_USB_VBUS_WAKEUP_SOURCE(1)
-#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID	MX6SX_USB_VBUS_WAKEUP_SOURCE(2)
-#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END	MX6SX_USB_VBUS_WAKEUP_SOURCE(3)
+#define MX6SX_USB_VBUS_WAKEUP_SOURCE		GENMASK(9, 8)
+#define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS	0
+#define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID	1
+#define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID	2
+#define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END	3
 
 #define VF610_OVER_CUR_DIS		BIT(7)
 
 #define MX7D_USBNC_USB_CTRL2		0x4
-#define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK	0x3
-#define MX7D_USB_VBUS_WAKEUP_SOURCE(v)		(v << 0)
-#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS	MX7D_USB_VBUS_WAKEUP_SOURCE(0)
-#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID	MX7D_USB_VBUS_WAKEUP_SOURCE(1)
-#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID	MX7D_USB_VBUS_WAKEUP_SOURCE(2)
-#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END	MX7D_USB_VBUS_WAKEUP_SOURCE(3)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE		GENMASK(1, 0)
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS	0
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID	1
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID	2
+#define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END	3
 #define MX7D_USBNC_AUTO_RESUME				BIT(2)
 /* The default DM/DP value is pull-down */
-#define MX7D_USBNC_USB_CTRL2_OPMODE(v)			(v << 6)
-#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING	MX7D_USBNC_USB_CTRL2_OPMODE(1)
-#define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK	(BIT(7) | BIT(6))
+#define MX7D_USBNC_USB_CTRL2_OPMODE		GENMASK(7, 6)
+#define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING	1
 #define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN		BIT(8)
 #define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_VAL		BIT(12)
 #define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_EN		BIT(13)
@@ -129,10 +126,8 @@ 
 #define MX7D_USB_OTG_PHY_STATUS_CHRGDET		BIT(29)
 
 #define MX7D_USB_OTG_PHY_CFG1		0x30
-#define TXPREEMPAMPTUNE0_BIT		28
-#define TXPREEMPAMPTUNE0_MASK		(3 << 28)
-#define TXVREFTUNE0_BIT			20
-#define TXVREFTUNE0_MASK		(0xf << 20)
+#define TXPREEMPAMPTUNE0		GENMASK(29, 28)
+#define TXVREFTUNE0			GENMASK(23, 20)
 
 #define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \
 				 MX6_BM_ID_WAKEUP)
@@ -173,8 +168,8 @@  static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 	switch (data->index) {
 	case 0:
 		val = readl(usbmisc->base);
-		val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT);
-		val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT;
+		val &= ~(MX25_OTG_SIC | MX25_OTG_PP_BIT);
+		val |= FIELD_PREP(MX25_OTG_SIC, MX25_EHCI_INTERFACE_DIFF_UNI);
 		val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT);
 
 		/*
@@ -188,8 +183,8 @@  static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 		break;
 	case 1:
 		val = readl(usbmisc->base);
-		val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
-		val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT;
+		val &= ~(MX25_H1_SIC | MX25_H1_PP_BIT |  MX25_H1_IPPUE_UP_BIT);
+		val |= FIELD_PREP(MX25_H1_SIC, MX25_EHCI_INTERFACE_SINGLE_UNI);
 		val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT |
 			MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT);
 
@@ -308,8 +303,9 @@  static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 			reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
 			val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN;
 			/* select ULPI clock */
-			val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK;
-			val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI;
+			val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL;
+			val |= FIELD_PREP(MX53_USB_CTRL_1_H2_XCVR_CLK_SEL,
+					  MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI);
 			writel(val, reg);
 			/* Set interrupt wake up enable */
 			reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET;
@@ -338,8 +334,9 @@  static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 			reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET;
 			val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN;
 			/* select ULPI clock */
-			val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK;
-			val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI;
+			val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL;
+			val |= FIELD_PREP(MX53_USB_CTRL_1_H3_XCVR_CLK_SEL,
+					  MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI);
 			writel(val, reg);
 			/* Set interrupt wake up enable */
 			reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET;
@@ -551,8 +548,10 @@  static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data)
 		spin_lock_irqsave(&usbmisc->lock, flags);
 		/* Set vbus wakeup source as bvalid */
 		val = readl(reg);
-		val &= ~MX6SX_USB_VBUS_WAKEUP_SOURCE(3);
-		writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg);
+		val &= ~MX6SX_USB_VBUS_WAKEUP_SOURCE;
+		val |= FIELD_PREP(MX6SX_USB_VBUS_WAKEUP_SOURCE,
+				  MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID);
+		writel(val, reg);
 		/*
 		 * Disable dp/dm wakeup in device mode when vbus is
 		 * not there.
@@ -652,22 +651,23 @@  static int usbmisc_imx7d_init(struct imx_usbmisc_data *data)
 
 	if (!data->hsic) {
 		reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
-		reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
-		writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID
-			| MX7D_USBNC_AUTO_RESUME,
-			usbmisc->base + MX7D_USBNC_USB_CTRL2);
+		reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE;
+		reg |= FIELD_PREP(MX7D_USB_VBUS_WAKEUP_SOURCE,
+				  MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID);
+		reg |= MX7D_USBNC_AUTO_RESUME;
+		writel(reg, usbmisc->base + MX7D_USBNC_USB_CTRL2);
 		/* PHY tuning for signal quality */
 		reg = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
-		if (data->emp_curr_control && data->emp_curr_control <=
-			(TXPREEMPAMPTUNE0_MASK >> TXPREEMPAMPTUNE0_BIT)) {
-			reg &= ~TXPREEMPAMPTUNE0_MASK;
-			reg |= (data->emp_curr_control << TXPREEMPAMPTUNE0_BIT);
+		if (data->emp_curr_control &&
+		    FIELD_FIT(TXPREEMPAMPTUNE0, data->emp_curr_control)) {
+			reg &= ~TXPREEMPAMPTUNE0;
+			reg |= FIELD_PREP(TXPREEMPAMPTUNE0, data->emp_curr_control);
 		}
 
-		if (data->dc_vol_level_adjust && data->dc_vol_level_adjust <=
-			(TXVREFTUNE0_MASK >> TXVREFTUNE0_BIT)) {
-			reg &= ~TXVREFTUNE0_MASK;
-			reg |= (data->dc_vol_level_adjust << TXVREFTUNE0_BIT);
+		if (data->dc_vol_level_adjust &&
+		    FIELD_FIT(TXVREFTUNE0, data->dc_vol_level_adjust)) {
+			reg &= ~TXVREFTUNE0;
+			reg |= FIELD_PREP(TXVREFTUNE0, data->dc_vol_level_adjust);
 		}
 
 		writel(reg, usbmisc->base + MX7D_USB_OTG_PHY_CFG1);
@@ -742,7 +742,7 @@  static void imx7_disable_charger_detector(struct imx_usbmisc_data *data)
 
 	/* Set OPMODE to be 2'b00 and disable its override */
 	val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
-	val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
+	val &= ~MX7D_USBNC_USB_CTRL2_OPMODE;
 	writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
 
 	val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
@@ -852,8 +852,9 @@  static int imx7d_charger_detection(struct imx_usbmisc_data *data)
 	 */
 	spin_lock_irqsave(&usbmisc->lock, flags);
 	val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
-	val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK;
-	val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING;
+	val &= ~MX7D_USBNC_USB_CTRL2_OPMODE;
+	val |= FIELD_PREP(MX7D_USBNC_USB_CTRL2_OPMODE,
+			  MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING);
 	writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2);
 
 	val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
@@ -926,9 +927,10 @@  static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data)
 			usbmisc->base + MX7D_USBNC_USB_CTRL2);
 	} else {
 		reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2);
-		reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK;
-		writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID,
-			 usbmisc->base + MX7D_USBNC_USB_CTRL2);
+		reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE;
+		reg |= FIELD_PREP(MX7D_USB_VBUS_WAKEUP_SOURCE,
+				  MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID);
+		writel(reg, usbmisc->base + MX7D_USBNC_USB_CTRL2);
 	}
 
 	spin_unlock_irqrestore(&usbmisc->lock, flags);