Hi Sascha,
On Tue, Oct 11, 2022 at 4:55 PM Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
>
> 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@xxxxxxxxxxxxxx>
> ---
> 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)
Should be GENMASK(7, 6)
Thanks,
Xu Yang
> +#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
>
