[PATCH 3/6] usb: chipidea: usbmisc_imx: Use GENMASK/FIELD_PREP for bitfields
Sascha Hauer
s.hauer at pengutronix.de
Tue Oct 11 01:29:21 PDT 2022
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 at pengutronix.de>
---
drivers/usb/chipidea/usbmisc_imx.c | 116 +++++++++++++++--------------
1 file changed, 59 insertions(+), 57 deletions(-)
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);
--
2.30.2
More information about the linux-arm-kernel
mailing list