[PATCH v4 3/4] phy: usb: phy-brcm-usb: Add Broadcom STB USB phy driver
Kishon Vijay Abraham I
kishon at ti.com
Fri Aug 18 03:27:09 PDT 2017
Hi,
On Friday 21 July 2017 07:40 PM, Al Cooper wrote:
> Add a new USB Phy driver for Broadcom STB SoCs. This driver
> supports Broadcom STB ARM SoCs. This driver in
> combination with the Broadcom STB ohci, ehci and xhci
> drivers will enable USB1.1, USB2.0 and USB3.0 support.
> This Phy driver also supports the Broadcom BDC gadget
> driver.
>
> Signed-off-by: Al Cooper <alcooperx at gmail.com>
> ---
> MAINTAINERS | 7 +
> drivers/phy/broadcom/Kconfig | 13 +
> drivers/phy/broadcom/Makefile | 3 +
> drivers/phy/broadcom/phy-brcm-usb-init.c | 1034 ++++++++++++++++++++++++++++++
> drivers/phy/broadcom/phy-brcm-usb-init.h | 50 ++
> drivers/phy/broadcom/phy-brcm-usb.c | 375 +++++++++++
> 6 files changed, 1482 insertions(+)
> create mode 100644 drivers/phy/broadcom/phy-brcm-usb-init.c
> create mode 100644 drivers/phy/broadcom/phy-brcm-usb-init.h
> create mode 100644 drivers/phy/broadcom/phy-brcm-usb.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d711d53..63b6f41 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2774,6 +2774,13 @@ L: linux-pm at vger.kernel.org
> S: Maintained
> F: drivers/cpufreq/bmips-cpufreq.c
>
> +BROADCOM BRCMSTB USB2 and USB3 PHY DRIVER
> +M: Al Cooper <alcooperx at gmail.com>
> +L: linux-kernel at vger.kernel.org
> +L: bcm-kernel-feedback-list at broadcom.com
> +S: Maintained
> +F: drivers/phy/broadcom/phy-brcm-usb*
> +
> BROADCOM TG3 GIGABIT ETHERNET DRIVER
> M: Siva Reddy Kallam <siva.kallam at broadcom.com>
> M: Prashant Sreedharan <prashant at broadcom.com>
> diff --git a/drivers/phy/broadcom/Kconfig b/drivers/phy/broadcom/Kconfig
> index c4b632e..27c71d6 100644
> --- a/drivers/phy/broadcom/Kconfig
> +++ b/drivers/phy/broadcom/Kconfig
> @@ -66,3 +66,16 @@ config PHY_BRCM_SATA
> help
> Enable this to support the Broadcom SATA PHY.
> If unsure, say N.
> +
> +config PHY_BRCM_USB
> + tristate "Broadcom STB USB PHY driver"
> + depends on ARCH_BRCMSTB || BMIPS_GENERIC
> + depends on OF
> + select GENERIC_PHY
> + select SOC_BRCMSTB
> + default ARCH_BRCMSTB || BMIPS_GENERIC
> + help
> + Enable this to support the Broadcom STB USB PHY.
> + This driver is required by the USB XHCI, EHCI and OHCI
> + drivers.
> + If unsure, say N.
> diff --git a/drivers/phy/broadcom/Makefile b/drivers/phy/broadcom/Makefile
> index 4eb82ec..7c37ba6 100644
> --- a/drivers/phy/broadcom/Makefile
> +++ b/drivers/phy/broadcom/Makefile
> @@ -5,3 +5,6 @@ obj-$(CONFIG_PHY_BCM_NS_USB3) += phy-bcm-ns-usb3.o
> obj-$(CONFIG_PHY_NS2_PCIE) += phy-bcm-ns2-pcie.o
> obj-$(CONFIG_PHY_NS2_USB_DRD) += phy-bcm-ns2-usbdrd.o
> obj-$(CONFIG_PHY_BRCM_SATA) += phy-brcm-sata.o
> +obj-$(CONFIG_PHY_BRCM_USB) += phy-brcm-usb-dvr.o
> +
> +phy-brcm-usb-dvr-objs := phy-brcm-usb.o phy-brcm-usb-init.o
> diff --git a/drivers/phy/broadcom/phy-brcm-usb-init.c b/drivers/phy/broadcom/phy-brcm-usb-init.c
> new file mode 100644
> index 0000000..6f93a14
> --- /dev/null
> +++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
> @@ -0,0 +1,1034 @@
> +/*
> + * phy-brcm-usb-init.c - Broadcom USB Phy chip specific init functions
> + *
> + * Copyright (C) 2014-2017 Broadcom
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +/*
> + * This module contains USB PHY initialization for power up and S3 resume
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/io.h>
> +
> +#include <linux/soc/brcmstb/brcmstb.h>
> +#include "phy-brcm-usb-init.h"
> +
> +#define PHY_PORTS 2
> +#define PHY_PORT_SELECT_0 0
> +#define PHY_PORT_SELECT_1 0x1000
> +
> +/* Register definitions for the USB CTRL block */
> +#define USB_CTRL_SETUP 0x00
> +#define USB_CTRL_SETUP_IOC_MASK 0x00000010
> +#define USB_CTRL_SETUP_IPP_MASK 0x00000020
> +#define USB_CTRL_SETUP_BABO_MASK 0x00000001
> +#define USB_CTRL_SETUP_FNHW_MASK 0x00000002
> +#define USB_CTRL_SETUP_FNBO_MASK 0x00000004
> +#define USB_CTRL_SETUP_WABO_MASK 0x00000008
> +#define USB_CTRL_SETUP_SCB_CLIENT_SWAP_MASK 0x00002000 /* option */
> +#define USB_CTRL_SETUP_SCB1_EN_MASK 0x00004000 /* option */
> +#define USB_CTRL_SETUP_SCB2_EN_MASK 0x00008000 /* option */
> +#define USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK 0X00020000 /* option */
> +#define USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK 0x00010000 /* option */
> +#define USB_CTRL_SETUP_STRAP_IPP_SEL_MASK 0x02000000 /* option */
> +#define USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK 0x04000000 /* option */
> +#define USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK 0x08000000 /* opt */
> +#define USB_CTRL_SETUP_OC3_DISABLE_MASK 0xc0000000 /* option */
> +#define USB_CTRL_PLL_CTL 0x04
> +#define USB_CTRL_PLL_CTL_PLL_SUSPEND_EN_MASK 0x08000000
> +#define USB_CTRL_PLL_CTL_PLL_RESETB_MASK 0x40000000
> +#define USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK 0x80000000 /* option */
> +#define USB_CTRL_EBRIDGE 0x0c
> +#define USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK 0x00020000 /* option */
> +#define USB_CTRL_MDIO 0x14
> +#define USB_CTRL_MDIO2 0x18
> +#define USB_CTRL_UTMI_CTL_1 0x2c
> +#define USB_CTRL_UTMI_CTL_1_POWER_UP_FSM_EN_MASK 0x00000800
> +#define USB_CTRL_UTMI_CTL_1_POWER_UP_FSM_EN_P1_MASK 0x08000000
> +#define USB_CTRL_USB_PM 0x34
> +#define USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK 0x00800000 /* option */
> +#define USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK 0x00400000 /* option */
> +#define USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK 0x40000000 /* option */
> +#define USB_CTRL_USB_PM_USB_PWRDN_MASK 0x80000000 /* option */
> +#define USB_CTRL_USB_PM_SOFT_RESET_MASK 0x40000000 /* option */
> +#define USB_CTRL_USB_PM_USB20_HC_RESETB_MASK 0x30000000 /* option */
> +#define USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK 0x00300000 /* option */
> +#define USB_CTRL_USB30_CTL1 0x60
> +#define USB_CTRL_USB30_CTL1_PHY3_PLL_SEQ_START_MASK 0x00000010
> +#define USB_CTRL_USB30_CTL1_PHY3_RESETB_MASK 0x00010000
> +#define USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK 0x00020000 /* option */
> +#define USB_CTRL_USB30_CTL1_USB3_IOC_MASK 0x10000000 /* option */
> +#define USB_CTRL_USB30_CTL1_USB3_IPP_MASK 0x20000000 /* option */
> +#define USB_CTRL_USB30_PCTL 0x70
> +#define USB_CTRL_USB30_PCTL_PHY3_SOFT_RESETB_MASK 0x00000002
> +#define USB_CTRL_USB30_PCTL_PHY3_SOFT_RESETB_P1_MASK 0x00020000
> +#define USB_CTRL_USB_DEVICE_CTL1 0x90
> +#define USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK 0x00000003 /* option */
> +
> +/* Register definitions for the XHCI EC block */
> +#define USB_XHCI_EC_IRAADR 0x658
> +#define USB_XHCI_EC_IRADAT 0x65c
> +
> +enum brcm_family_type {
> + BRCM_FAMILY_3390A0,
> + BRCM_FAMILY_7250B0,
> + BRCM_FAMILY_7271A0,
> + BRCM_FAMILY_7364A0,
> + BRCM_FAMILY_7366C0,
> + BRCM_FAMILY_74371A0,
> + BRCM_FAMILY_7439B0,
> + BRCM_FAMILY_7445D0,
> + BRCM_FAMILY_7260A0,
> + BRCM_FAMILY_7278A0,
> + BRCM_FAMILY_COUNT,
> +};
> +
> +#define USB_BRCM_FAMILY(chip) \
> + [BRCM_FAMILY_##chip] = __stringify(chip)
> +
> +static const char *family_names[BRCM_FAMILY_COUNT] = {
> + USB_BRCM_FAMILY(3390A0),
> + USB_BRCM_FAMILY(7250B0),
> + USB_BRCM_FAMILY(7271A0),
> + USB_BRCM_FAMILY(7364A0),
> + USB_BRCM_FAMILY(7366C0),
> + USB_BRCM_FAMILY(74371A0),
> + USB_BRCM_FAMILY(7439B0),
> + USB_BRCM_FAMILY(7445D0),
> + USB_BRCM_FAMILY(7260A0),
> + USB_BRCM_FAMILY(7278A0),
> +};
> +
> +enum {
> + USB_CTRL_SETUP_SCB1_EN_SELECTOR,
> + USB_CTRL_SETUP_SCB2_EN_SELECTOR,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR,
> + USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR,
> + USB_CTRL_SETUP_OC3_DISABLE_SELECTOR,
> + USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR,
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_SELECTOR,
> + USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR,
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_SELECTOR,
> + USB_CTRL_USB_PM_USB_PWRDN_SELECTOR,
> + USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_SELECTOR,
> + USB_CTRL_USB30_CTL1_USB3_IOC_SELECTOR,
> + USB_CTRL_USB30_CTL1_USB3_IPP_SELECTOR,
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_SELECTOR,
> + USB_CTRL_USB_PM_SOFT_RESET_SELECTOR,
> + USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_SELECTOR,
> + USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_SELECTOR,
> + USB_CTRL_USB_PM_USB20_HC_RESETB_SELECTOR,
> + USB_CTRL_SETUP_ENDIAN_SELECTOR,
> + USB_CTRL_SELECTOR_COUNT,
> +};
> +
> +#define USB_CTRL_REG(base, reg) ((void *)base + USB_CTRL_##reg)
> +#define USB_XHCI_EC_REG(base, reg) ((void *)base + USB_XHCI_EC_##reg)
> +#define USB_CTRL_MASK(reg, field) \
> + USB_CTRL_##reg##_##field##_MASK
> +#define USB_CTRL_MASK_FAMILY(params, reg, field) \
> + (params->usb_reg_bits_map[USB_CTRL_##reg##_##field##_SELECTOR])
> +
> +#define USB_CTRL_SET_FAMILY(params, reg, field) \
> + usb_ctrl_set_family(params, USB_CTRL_##reg, \
> + USB_CTRL_##reg##_##field##_SELECTOR)
> +#define USB_CTRL_UNSET_FAMILY(params, reg, field) \
> + usb_ctrl_unset_family(params, USB_CTRL_##reg, \
> + USB_CTRL_##reg##_##field##_SELECTOR)
> +
> +#define USB_CTRL_SET(base, reg, field) \
> + brcmusb_writel(brcmusb_readl(USB_CTRL_REG(base, reg)) | \
> + USB_CTRL_##reg##_##field##_MASK, USB_CTRL_REG(base, reg))
> +#define USB_CTRL_UNSET(base, reg, field) \
> + brcmusb_writel(brcmusb_readl(USB_CTRL_REG(base, reg)) & \
> + ~USB_CTRL_##reg##_##field##_MASK, USB_CTRL_REG(base, reg))
> +
> +
> +#define MDIO_USB2 0
> +#define MDIO_USB3 (1 << 31)
Why mdio_driver is not used here like some of the other broadcom phy drivers?
> +
> +#define USB_CTRL_SETUP_ENDIAN_BITS ( \
> + USB_CTRL_MASK(SETUP, BABO) | \
> + USB_CTRL_MASK(SETUP, FNHW) | \
> + USB_CTRL_MASK(SETUP, FNBO) | \
> + USB_CTRL_MASK(SETUP, WABO))
> +
> +#ifdef __LITTLE_ENDIAN
> +#define ENDIAN_SETTINGS ( \
> + USB_CTRL_MASK(SETUP, BABO) | \
> + USB_CTRL_MASK(SETUP, FNHW))
> +#else
> +#define ENDIAN_SETTINGS ( \
> + USB_CTRL_MASK(SETUP, FNHW) | \
> + USB_CTRL_MASK(SETUP, FNBO) | \
> + USB_CTRL_MASK(SETUP, WABO))
> +#endif
> +
> +struct id_to_type {
> + u32 id;
> + int type;
> +};
> +
> +static const struct id_to_type id_to_type_table[] = {
> + { 0x33900000, BRCM_FAMILY_3390A0 },
> + { 0x72500010, BRCM_FAMILY_7250B0 },
> + { 0x72600000, BRCM_FAMILY_7260A0 },
> + { 0x72680000, BRCM_FAMILY_7271A0 },
> + { 0x72710000, BRCM_FAMILY_7271A0 },
> + { 0x73640000, BRCM_FAMILY_7364A0 },
> + { 0x73660020, BRCM_FAMILY_7366C0 },
> + { 0x07437100, BRCM_FAMILY_74371A0 },
> + { 0x74390010, BRCM_FAMILY_7439B0 },
> + { 0x74450030, BRCM_FAMILY_7445D0 },
> + { 0x72780000, BRCM_FAMILY_7278A0 },
> + { 0, BRCM_FAMILY_7271A0 }, /* default */
> +};
> +
> +static const u32
> +usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
> + /* 3390B0 */
> + [BRCM_FAMILY_3390A0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7250b0 */
> + [BRCM_FAMILY_7250B0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + 0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
> + 0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + 0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7271a0 */
> + [BRCM_FAMILY_7271A0] = {
> + 0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
> + 0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
> + USB_CTRL_USB_PM_SOFT_RESET_MASK,
> + USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
> + USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
> + USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7364a0 */
> + [BRCM_FAMILY_7364A0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + 0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
> + 0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + 0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7366c0 */
> + [BRCM_FAMILY_7366C0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + 0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_VAR_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + 0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 74371A0 */
> + [BRCM_FAMILY_74371A0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
> + 0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
> + 0, /* USB_CTRL_SETUP_OC3_DISABLE_MASK */
> + USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
> + 0, /* USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK */
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
> + USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB30_CTL1_USB3_IOC_MASK,
> + USB_CTRL_USB30_CTL1_USB3_IPP_MASK,
> + 0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + 0, /* USB_CTRL_USB_PM_USB20_HC_RESETB_MASK */
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7439B0 */
> + [BRCM_FAMILY_7439B0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + 0, /* USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK */
> + USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7445d0 */
> + [BRCM_FAMILY_7445D0] = {
> + USB_CTRL_SETUP_SCB1_EN_MASK,
> + USB_CTRL_SETUP_SCB2_EN_MASK,
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
> + 0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
> + 0, /* USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK */
> + 0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB_PM_USB_PWRDN_MASK */
> + USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + 0, /* USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK */
> + 0, /* USB_CTRL_USB_PM_SOFT_RESET_MASK */
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7260a0 */
> + [BRCM_FAMILY_7260A0] = {
> + 0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
> + 0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
> + USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
> + USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
> + USB_CTRL_USB_PM_SOFT_RESET_MASK,
> + USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK,
> + USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK,
> + USB_CTRL_USB_PM_USB20_HC_RESETB_VAR_MASK,
> + ENDIAN_SETTINGS, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> + /* 7278a0 */
> + [BRCM_FAMILY_7278A0] = {
> + 0, /* USB_CTRL_SETUP_SCB1_EN_MASK */
> + 0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
> + 0, /*USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK */
> + USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
> + USB_CTRL_SETUP_OC3_DISABLE_MASK,
> + 0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
> + USB_CTRL_EBRIDGE_ESTOP_SCB_REQ_MASK,
> + USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_XHC_SOFT_RESETB_MASK,
> + USB_CTRL_USB_PM_USB_PWRDN_MASK,
> + 0, /* USB_CTRL_USB30_CTL1_XHC_SOFT_RESETB_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IOC_MASK */
> + 0, /* USB_CTRL_USB30_CTL1_USB3_IPP_MASK */
> + USB_CTRL_USB_DEVICE_CTL1_PORT_MODE_MASK,
> + USB_CTRL_USB_PM_SOFT_RESET_MASK,
> + 0, /* USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK */
> + 0, /* USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK */
> + 0, /* USB_CTRL_USB_PM_USB20_HC_RESETB_MASK */
> + 0, /* USB_CTRL_SETUP ENDIAN bits */
> + },
> +};
> +
> +static inline u32 brcmusb_readl(void __iomem *addr)
> +{
> + /*
> + * MIPS endianness is configured by boot strap, which also reverses all
> + * bus endianness (i.e., big-endian CPU + big endian bus ==> native
> + * endian I/O).
> + *
> + * Other architectures (e.g., ARM) either do not support big endian, or
> + * else leave I/O in little endian mode.
> + */
> + if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(__BIG_ENDIAN))
> + return __raw_readl(addr);
Since you've dropped MIPS support, you can remove this and later add when MIPS
sipport is added.
> + else
> + return readl_relaxed(addr);
readl?
> +}
> +
> +static inline void brcmusb_writel(u32 val, void __iomem *addr)
> +{
> + /* See brcmnand_readl() comments */
> + if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(__BIG_ENDIAN))
> + __raw_writel(val, addr);
same here.
> + else
> + writel_relaxed(val, addr);
> +}
> +
> +static inline
> +void usb_ctrl_unset_family(struct brcm_usb_init_params *params,
> + u32 reg_offset, u32 field)
> +{
> + u32 mask;
> + void *reg;
> +
> + mask = params->usb_reg_bits_map[field];
> + reg = params->ctrl_regs + reg_offset;
> + brcmusb_writel(brcmusb_readl(reg) & ~mask, reg);
> +};
> +
> +static inline
> +void usb_ctrl_set_family(struct brcm_usb_init_params *params,
> + u32 reg_offset, u32 field)
> +{
> + u32 mask;
> + void *reg;
> +
> + mask = params->usb_reg_bits_map[field];
> + reg = params->ctrl_regs + reg_offset;
> + brcmusb_writel(brcmusb_readl(reg) | mask, reg);
> +};
> +
> +
> +static u32 brcmusb_usb_mdio_read(void __iomem *ctrl_base, u32 reg, int mode)
> +{
> + u32 data;
> +
> + data = (reg << 16) | mode;
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + data |= (1 << 24);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + data &= ~(1 << 24);
> + /* wait for the 60MHz parallel to serial shifter */
> + udelay(10);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + /* wait for the 60MHz parallel to serial shifter */
> + udelay(10);
> +
> + return brcmusb_readl(USB_CTRL_REG(ctrl_base, MDIO2)) & 0xffff;
> +}
> +
> +static void brcmusb_usb_mdio_write(void __iomem *ctrl_base, u32 reg,
> + u32 val, int mode)
> +{
> + u32 data;
> +
> + data = (reg << 16) | val | mode;
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + data |= (1 << 25);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + data &= ~(1 << 25);
> +
> + /* wait for the 60MHz parallel to serial shifter */
> + udelay(10);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + /* wait for the 60MHz parallel to serial shifter */
> + udelay(10);
> +}
> +
> +
> +static void brcmusb_usb_phy_ldo_fix(void __iomem *ctrl_base)
> +{
> + /* first disable FSM but also leave it that way */
> + /* to allow normal suspend/resume */
> + USB_CTRL_UNSET(ctrl_base, UTMI_CTL_1, POWER_UP_FSM_EN);
> + USB_CTRL_UNSET(ctrl_base, UTMI_CTL_1, POWER_UP_FSM_EN_P1);
> +
> + /* reset USB 2.0 PLL */
> + USB_CTRL_UNSET(ctrl_base, PLL_CTL, PLL_RESETB);
> + /* PLL reset period */
> + udelay(1);
> + USB_CTRL_SET(ctrl_base, PLL_CTL, PLL_RESETB);
> + /* Give PLL enough time to lock */
> + msleep(1);
> +}
> +
> +
single blank like is sufficient here and below.
> +static void brcmusb_usb2_eye_fix(void __iomem *ctrl_base)
> +{
> + /* Increase USB 2.0 TX level to meet spec requirement */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x80a0, MDIO_USB2);
> + brcmusb_usb_mdio_write(ctrl_base, 0x0a, 0xc6a0, MDIO_USB2);
> +}
> +
> +
> +static void brcmusb_usb3_pll_fix(void __iomem *ctrl_base)
> +{
> + /* Set correct window for PLL lock detect */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x07, 0x1503, MDIO_USB3);
> +}
> +
> +
> +static void brcmusb_usb3_enable_pipe_reset(void __iomem *ctrl_base)
> +{
> + u32 val;
> +
> + /* Re-enable USB 3.0 pipe reset */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x0f, MDIO_USB3) | 0x200;
> + brcmusb_usb_mdio_write(ctrl_base, 0x0f, val, MDIO_USB3);
> +}
> +
> +
> +static void brcmusb_usb3_enable_sigdet(void __iomem *ctrl_base)
> +{
> + u32 val, ofs;
> + int ii;
> +
> + ofs = 0;
> + for (ii = 0; ii < PHY_PORTS; ++ii) {
> + /* Set correct default for sigdet */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, (0x8080 + ofs),
> + MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x05, MDIO_USB3);
> + val = (val & ~0x800f) | 0x800d;
> + brcmusb_usb_mdio_write(ctrl_base, 0x05, val, MDIO_USB3);
> + ofs = PHY_PORT_SELECT_1;
> + }
> +}
> +
> +
> +static void brcmusb_usb3_enable_skip_align(void __iomem *ctrl_base)
> +{
> + u32 val, ofs;
> + int ii;
> +
> + ofs = 0;
> + for (ii = 0; ii < PHY_PORTS; ++ii) {
> + /* Set correct default for SKIP align */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, (0x8060 + ofs),
> + MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0x200;
> + brcmusb_usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> + ofs = PHY_PORT_SELECT_1;
> + }
> +}
> +
> +
> +static void brcmusb_usb3_unfreeze_aeq(void __iomem *ctrl_base)
> +{
> + u32 val, ofs;
> + int ii;
> +
> + ofs = 0;
> + for (ii = 0; ii < PHY_PORTS; ++ii) {
> + /* Let EQ freeze after TSEQ */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, (0x80e0 + ofs),
> + MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x01, MDIO_USB3);
> + val &= ~0x0008;
> + brcmusb_usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> + ofs = PHY_PORT_SELECT_1;
> + }
> +}
> +
> +
> +static void brcmusb_usb3_pll_54Mhz(struct brcm_usb_init_params *params)
> +{
> + u32 ofs;
> + int ii;
> + void __iomem *ctrl_base = params->ctrl_regs;
> +
> + /*
> + * On newer B53 based SoC's, the reference clock for the
> + * 3.0 PLL has been changed from 50MHz to 54MHz so the
> + * PLL needs to be reprogrammed.
> + * See SWLINUX-4006.
> + *
> + * On the 7364C0, the reference clock for the
> + * 3.0 PLL has been changed from 50MHz to 54MHz to
> + * work around a MOCA issue.
> + * See SWLINUX-4169.
> + */
> + switch (params->selected_family) {
> + case BRCM_FAMILY_3390A0:
> + case BRCM_FAMILY_7250B0:
> + case BRCM_FAMILY_7366C0:
> + case BRCM_FAMILY_74371A0:
> + case BRCM_FAMILY_7439B0:
> + case BRCM_FAMILY_7445D0:
> + case BRCM_FAMILY_7260A0:
> + return;
> + case BRCM_FAMILY_7364A0:
> + if (BRCM_REV(params->family_id) < 0x20)
> + return;
> + break;
> + }
> +
> + /* set USB 3.0 PLL to accept 54Mhz reference clock */
> + USB_CTRL_UNSET(ctrl_base, USB30_CTL1, PHY3_PLL_SEQ_START);
> +
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x10, 0x5784, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x11, 0x01d0, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x12, 0x1DE8, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x13, 0xAA80, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x14, 0x8826, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x15, 0x0044, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x16, 0x8000, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x17, 0x0851, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x18, 0x0000, MDIO_USB3);
> +
> + /* both ports */
> + ofs = 0;
> + for (ii = 0; ii < PHY_PORTS; ++ii) {
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, (0x8040 + ofs),
> + MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x03, 0x0090, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x04, 0x0134, MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, (0x8020 + ofs),
> + MDIO_USB3);
> + brcmusb_usb_mdio_write(ctrl_base, 0x01, 0x00e2, MDIO_USB3);
> + ofs = PHY_PORT_SELECT_1;
> + }
> +
> + /* restart PLL sequence */
> + USB_CTRL_SET(ctrl_base, USB30_CTL1, PHY3_PLL_SEQ_START);
> + /* Give PLL enough time to lock */
> + msleep(1);
> +}
> +
> +
> +static void brcmusb_usb3_ssc_enable(void __iomem *ctrl_base)
> +{
> + u32 val;
> +
> + /* Enable USB 3.0 TX spread spectrum */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x8040, MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0xf;
> + brcmusb_usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> +
> + /* Currently, USB 3.0 SSC is enabled via port 0 MDIO registers,
> + * which should have been adequate. However, due to a bug in the
> + * USB 3.0 PHY, it must be enabled via both ports (HWUSB3DVT-26).
> + */
> + brcmusb_usb_mdio_write(ctrl_base, 0x1f, 0x9040, MDIO_USB3);
> + val = brcmusb_usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0xf;
> + brcmusb_usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> +}
> +
> +
> +static void brcmusb_usb3_phy_workarounds(struct brcm_usb_init_params *params)
> +{
> + void __iomem *ctrl_base = params->ctrl_regs;
> +
> + brcmusb_usb3_pll_fix(ctrl_base);
> + brcmusb_usb3_pll_54Mhz(params);
> + brcmusb_usb3_ssc_enable(ctrl_base);
> + brcmusb_usb3_enable_pipe_reset(ctrl_base);
> + brcmusb_usb3_enable_sigdet(ctrl_base);
> + brcmusb_usb3_enable_skip_align(ctrl_base);
> + brcmusb_usb3_unfreeze_aeq(ctrl_base);
> +}
> +
> +
> +static void brcmusb_memc_fix(struct brcm_usb_init_params *params)
> +{
> + u32 prid;
> +
> + if (params->selected_family != BRCM_FAMILY_7445D0)
> + return;
> + /*
> + * This is a workaround for HW7445-1869 where a DMA write ends up
> + * doing a read pre-fetch after the end of the DMA buffer. This
> + * causes a problem when the DMA buffer is at the end of physical
> + * memory, causing the pre-fetch read to access non-existent memory,
> + * and the chip bondout has MEMC2 disabled. When the pre-fetch read
> + * tries to use the disabled MEMC2, it hangs the bus. The workaround
> + * is to disable MEMC2 access in the usb controller which avoids
> + * the hang.
> + */
> +
> + prid = params->product_id & 0xfffff000;
> + switch (prid) {
> + case 0x72520000:
> + case 0x74480000:
> + case 0x74490000:
> + case 0x07252000:
> + case 0x07448000:
> + case 0x07449000:
> + USB_CTRL_UNSET_FAMILY(params, SETUP, SCB2_EN);
> + }
> +}
> +
> +static void brcmusb_usb3_otp_fix(struct brcm_usb_init_params *params)
> +{
> + void __iomem *xhci_ec_base = params->xhci_ec_regs;
> + u32 val;
> +
> + if ((params->family_id != 0x74371000) || (xhci_ec_base == 0))
> + return;
> + brcmusb_writel(0xa20c, USB_XHCI_EC_REG(xhci_ec_base, IRAADR));
> + val = brcmusb_readl(USB_XHCI_EC_REG(xhci_ec_base, IRADAT));
> +
> + /* set cfg_pick_ss_lock */
> + val |= (1 << 27);
> + brcmusb_writel(val, USB_XHCI_EC_REG(xhci_ec_base, IRADAT));
> +
> + /* Reset USB 3.0 PHY for workaround to take effect */
> + USB_CTRL_UNSET(params->ctrl_regs, USB30_CTL1, PHY3_RESETB);
> + USB_CTRL_SET(params->ctrl_regs, USB30_CTL1, PHY3_RESETB);
> +}
> +
> +
> +static void brcmusb_xhci_soft_reset(struct brcm_usb_init_params *params,
> + int on_off)
> +{
> + /* Assert reset */
> + if (on_off) {
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, XHC_SOFT_RESETB))
> + USB_CTRL_UNSET_FAMILY(params, USB_PM, XHC_SOFT_RESETB);
> + else
> + USB_CTRL_UNSET_FAMILY(params,
> + USB30_CTL1, XHC_SOFT_RESETB);
> + }
> + /* De-assert reset */
> + else {
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, XHC_SOFT_RESETB))
> + USB_CTRL_SET_FAMILY(params, USB_PM, XHC_SOFT_RESETB);
> + else
> + USB_CTRL_SET_FAMILY(params, USB30_CTL1,
> + XHC_SOFT_RESETB);
> + }
> +}
> +
> +/*
> + * Return the best map table family. The order is:
> + * - exact match of chip and major rev
> + * - exact match of chip and closest older major rev
> + * - default chip/rev.
> + * NOTE: The minor rev is always ignored.
> + */
> +static enum brcm_family_type brcmusb_get_family_type(
> + struct brcm_usb_init_params *params)
> +{
> + int last_type = -1;
> + u32 last_family = 0;
> + u32 family_no_major;
> + unsigned int x;
> + u32 family;
> +
> + family = params->family_id & 0xfffffff0;
> + family_no_major = params->family_id & 0xffffff00;
> + for (x = 0; id_to_type_table[x].id; x++) {
> + if (family == id_to_type_table[x].id)
> + return id_to_type_table[x].type;
> + if (family_no_major == (id_to_type_table[x].id & 0xffffff00))
> + if ((family > id_to_type_table[x].id) &&
> + (last_family < id_to_type_table[x].id)) {
> + last_family = id_to_type_table[x].id;
> + last_type = id_to_type_table[x].type;
> + }
> + }
> +
> + /* If no match, return the default family */
> + if (last_type == -1)
> + return id_to_type_table[x].type;
> + return last_type;
> +}
> +
> +void brcm_usb_init_ipp(struct brcm_usb_init_params *params)
> +{
> + void __iomem *ctrl = params->ctrl_regs;
> + u32 reg;
> + u32 orig_reg;
> +
> + /* Starting with the 7445d0, there are no longer separate 3.0
> + * versions of IOC and IPP.
> + */
> + if (USB_CTRL_MASK_FAMILY(params, USB30_CTL1, USB3_IOC)) {
> + if (params->ioc)
> + USB_CTRL_SET_FAMILY(params, USB30_CTL1, USB3_IOC);
> + if (params->ipp == 1)
> + USB_CTRL_SET_FAMILY(params, USB30_CTL1, USB3_IPP);
> + }
> +
> + orig_reg = reg = brcmusb_readl(USB_CTRL_REG(ctrl, SETUP));
> + if (USB_CTRL_MASK_FAMILY(params, SETUP, STRAP_CC_DRD_MODE_ENABLE_SEL))
> + /* Never use the strap, it's going away. */
> + reg &= ~(USB_CTRL_MASK_FAMILY(params,
> + SETUP,
> + STRAP_CC_DRD_MODE_ENABLE_SEL));
> + if (USB_CTRL_MASK_FAMILY(params, SETUP, STRAP_IPP_SEL))
> + if (params->ipp != 2)
> + /* override ipp strap pin (if it exits) */
> + reg &= ~(USB_CTRL_MASK_FAMILY(params, SETUP,
> + STRAP_IPP_SEL));
> +
> + /* Override the default OC and PP polarity */
> + reg &= ~(USB_CTRL_MASK(SETUP, IPP) | USB_CTRL_MASK(SETUP, IOC));
> + if (params->ioc)
> + reg |= USB_CTRL_MASK(SETUP, IOC);
> + if ((params->ipp == 1) && ((reg & USB_CTRL_MASK(SETUP, IPP)) == 0))
> + reg |= USB_CTRL_MASK(SETUP, IPP);
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, SETUP));
> +
> + /*
> + * If we're changing IPP, make sure power is off long enough
> + * to turn off any connected devices.
> + */
> + if (reg != orig_reg)
> + msleep(50);
> +}
> +
> +int brcm_usb_init_get_dual_select(struct brcm_usb_init_params *params)
> +{
> + void __iomem *ctrl = params->ctrl_regs;
> + u32 reg = 0;
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1, PORT_MODE)) {
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + reg &= USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1,
> + PORT_MODE);
> + }
> + return reg;
> +}
> +
> +void brcm_usb_init_set_dual_select(struct brcm_usb_init_params *params,
> + int mode)
> +{
> + void __iomem *ctrl = params->ctrl_regs;
> + u32 reg;
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1, PORT_MODE)) {
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + reg &= ~USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1,
> + PORT_MODE);
> + reg |= mode;
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + }
> +}
> +
> +void brcm_usb_init_common(struct brcm_usb_init_params *params)
> +{
> + u32 reg;
> + void __iomem *ctrl = params->ctrl_regs;
> +
> + /* Take USB out of power down */
> + if (USB_CTRL_MASK_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN)) {
> + USB_CTRL_UNSET_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN);
> + /* 1 millisecond - for USB clocks to settle down */
> + msleep(1);
> + }
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB_PWRDN)) {
> + USB_CTRL_UNSET_FAMILY(params, USB_PM, USB_PWRDN);
> + /* 1 millisecond - for USB clocks to settle down */
> + msleep(1);
> + }
> +
> + if ((params->selected_family != BRCM_FAMILY_74371A0) &&
> + (BRCM_ID(params->family_id) != 0x7364))
> + /*
> + * HW7439-637: 7439a0 and its derivatives do not have large
> + * enough descriptor storage for this.
> + */
> + USB_CTRL_SET_FAMILY(params, SETUP, SS_EHCI64BIT_EN);
> +
> + /* Block auto PLL suspend by USB2 PHY (Sasi) */
> + USB_CTRL_SET(ctrl, PLL_CTL, PLL_SUSPEND_EN);
> +
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, SETUP));
> + if (params->selected_family == BRCM_FAMILY_7364A0)
> + /* Suppress overcurrent indication from USB30 ports for A0 */
> + reg |= USB_CTRL_MASK_FAMILY(params, SETUP, OC3_DISABLE);
> +
> + brcmusb_usb_phy_ldo_fix(ctrl);
> + brcmusb_usb2_eye_fix(ctrl);
> +
> + /*
> + * Make sure the the second and third memory controller
> + * interfaces are enabled if they exist.
> + */
> + if (USB_CTRL_MASK_FAMILY(params, SETUP, SCB1_EN))
> + reg |= USB_CTRL_MASK_FAMILY(params, SETUP, SCB1_EN);
> + if (USB_CTRL_MASK_FAMILY(params, SETUP, SCB2_EN))
> + reg |= USB_CTRL_MASK_FAMILY(params, SETUP, SCB2_EN);
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, SETUP));
> +
> + brcmusb_memc_fix(params);
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1, PORT_MODE)) {
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + reg &= ~USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1,
> + PORT_MODE);
> + reg |= params->mode;
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + }
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, BDC_SOFT_RESETB)) {
> + switch (params->mode) {
> + case USB_CTLR_MODE_HOST:
> + USB_CTRL_UNSET_FAMILY(params, USB_PM, BDC_SOFT_RESETB);
> + break;
> + default:
> + USB_CTRL_SET_FAMILY(params, USB_PM, BDC_SOFT_RESETB);
> + break;
> + }
> + }
> + if (USB_CTRL_MASK_FAMILY(params, SETUP, CC_DRD_MODE_ENABLE)) {
> + if (params->mode == USB_CTLR_MODE_TYPEC_PD)
> + USB_CTRL_SET_FAMILY(params, SETUP, CC_DRD_MODE_ENABLE);
> + else
> + USB_CTRL_UNSET_FAMILY(params, SETUP,
> + CC_DRD_MODE_ENABLE);
> + }
> +}
> +
> +void brcm_usb_init_eohci(struct brcm_usb_init_params *params)
> +{
> + u32 reg;
> + void __iomem *ctrl = params->ctrl_regs;
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB20_HC_RESETB))
> + USB_CTRL_SET_FAMILY(params, USB_PM, USB20_HC_RESETB);
> +
> + if (params->selected_family == BRCM_FAMILY_7366C0)
> + /*
> + * Don't enable this so the memory controller doesn't read
> + * into memory holes. NOTE: This bit is low true on 7366C0.
> + */
> + USB_CTRL_SET_FAMILY(params, EBRIDGE, ESTOP_SCB_REQ);
> +
> + /* Setup the endian bits */
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, SETUP));
> + reg &= ~USB_CTRL_SETUP_ENDIAN_BITS;
> + reg |= USB_CTRL_MASK_FAMILY(params, SETUP, ENDIAN);
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, SETUP));
> +
> +}
> +
> +void brcm_usb_init_xhci(struct brcm_usb_init_params *params)
> +{
> + void __iomem *ctrl = params->ctrl_regs;
> +
> + if (BRCM_ID(params->family_id) == 0x7366) {
> + /*
> + * The PHY3_SOFT_RESETB bits default to the wrong state.
> + */
> + USB_CTRL_SET(ctrl, USB30_PCTL, PHY3_SOFT_RESETB);
> + USB_CTRL_SET(ctrl, USB30_PCTL, PHY3_SOFT_RESETB_P1);
> + }
> +
> + /*
> + * Kick start USB3 PHY
> + * Make sure it's low to insure a rising edge.
> + */
> + USB_CTRL_UNSET(ctrl, USB30_CTL1, PHY3_PLL_SEQ_START);
> + USB_CTRL_SET(ctrl, USB30_CTL1, PHY3_PLL_SEQ_START);
> +
> + brcmusb_usb3_phy_workarounds(params);
> + brcmusb_xhci_soft_reset(params, 0);
> + brcmusb_usb3_otp_fix(params);
> +}
> +
> +void brcm_usb_uninit_common(struct brcm_usb_init_params *params)
> +{
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB_PWRDN))
> + USB_CTRL_SET_FAMILY(params, USB_PM, USB_PWRDN);
> +
> + if (USB_CTRL_MASK_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN))
> + USB_CTRL_SET_FAMILY(params, PLL_CTL, PLL_IDDQ_PWRDN);
> +}
> +
> +void brcm_usb_uninit_eohci(struct brcm_usb_init_params *params)
> +{
> +
> + if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB20_HC_RESETB))
> + USB_CTRL_UNSET_FAMILY(params, USB_PM, USB20_HC_RESETB);
> +}
> +
> +void brcm_usb_uninit_xhci(struct brcm_usb_init_params *params)
> +{
> + brcmusb_xhci_soft_reset(params, 1);
> +}
> +
> +void brcm_usb_set_family_map(struct brcm_usb_init_params *params)
> +{
> + int fam;
> +
> + fam = brcmusb_get_family_type(params);
> + params->selected_family = fam;
> + params->usb_reg_bits_map =
> + &usb_reg_bits_map_table[fam][0];
> + params->family_name = family_names[fam];
> +}
> +
> diff --git a/drivers/phy/broadcom/phy-brcm-usb-init.h b/drivers/phy/broadcom/phy-brcm-usb-init.h
> new file mode 100644
> index 0000000..1566679
> --- /dev/null
> +++ b/drivers/phy/broadcom/phy-brcm-usb-init.h
> @@ -0,0 +1,50 @@
> +/*
> + * Copyright (C) 2014-2017 Broadcom
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _USB_BRCM_COMMON_INIT_H
> +#define _USB_BRCM_COMMON_INIT_H
> +
> +#define USB_CTLR_MODE_HOST 0
> +#define USB_CTLR_MODE_DEVICE 1
> +#define USB_CTLR_MODE_DRD 2
> +#define USB_CTLR_MODE_TYPEC_PD 3
> +
> +struct brcm_usb_init_params;
> +
> +struct brcm_usb_init_params {
> + void __iomem *ctrl_regs;
> + void __iomem *xhci_ec_regs;
> + int ioc;
> + int ipp;
> + int mode;
> + u32 family_id;
> + u32 product_id;
> + int selected_family;
> + const char *family_name;
> + const u32 *usb_reg_bits_map;
> +};
> +
> +void brcm_usb_set_family_map(struct brcm_usb_init_params *params);
> +int brcm_usb_init_get_dual_select(struct brcm_usb_init_params *params);
> +void brcm_usb_init_set_dual_select(struct brcm_usb_init_params *params,
> + int mode);
> +
> +void brcm_usb_init_ipp(struct brcm_usb_init_params *ini);
> +void brcm_usb_init_common(struct brcm_usb_init_params *ini);
> +void brcm_usb_init_eohci(struct brcm_usb_init_params *ini);
> +void brcm_usb_init_xhci(struct brcm_usb_init_params *ini);
> +void brcm_usb_uninit_common(struct brcm_usb_init_params *ini);
> +void brcm_usb_uninit_eohci(struct brcm_usb_init_params *ini);
> +void brcm_usb_uninit_xhci(struct brcm_usb_init_params *ini);
> +
> +#endif /* _USB_BRCM_COMMON_INIT_H */
> diff --git a/drivers/phy/broadcom/phy-brcm-usb.c b/drivers/phy/broadcom/phy-brcm-usb.c
> new file mode 100644
> index 0000000..429ef1c
> --- /dev/null
> +++ b/drivers/phy/broadcom/phy-brcm-usb.c
> @@ -0,0 +1,375 @@
> +/*
> + * phy-brcm-usb.c - Broadcom USB Phy Driver
> + *
> + * Copyright (C) 2015-2017 Broadcom
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/interrupt.h>
> +#include <linux/soc/brcmstb/brcmstb.h>
> +#include <dt-bindings/phy/phy.h>
> +
> +#include "phy-brcm-usb-init.h"
> +
> +enum brcm_usb_phy_id {
> + BRCM_USB_PHY_2_0 = 0,
> + BRCM_USB_PHY_3_0,
> + BRCM_USB_PHY_ID_MAX
> +};
> +
> +struct value_to_name_map {
> + int value;
> + const char *name;
> +};
> +
> +static struct value_to_name_map brcm_dr_mode_to_name[] = {
> + { USB_CTLR_MODE_HOST, "host" },
> + { USB_CTLR_MODE_DEVICE, "peripheral" },
> + { USB_CTLR_MODE_DRD, "drd" },
> + { USB_CTLR_MODE_TYPEC_PD, "typec-pd" }
> +};
> +
> +struct brcm_usb_phy {
> + struct phy *phy;
> + unsigned int id;
> + bool inited;
> +};
> +
> +struct brcm_usb_phy_data {
> + struct brcm_usb_init_params ini;
> + bool has_eohci;
> + bool has_xhci;
> + struct clk *usb_20_clk;
> + struct clk *usb_30_clk;
> + struct mutex mutex;
> + int init_count;
> + struct brcm_usb_phy phys[BRCM_USB_PHY_ID_MAX];
> +};
> +
> +#define to_brcm_usb_phy_data(phy) \
> + container_of((phy), struct brcm_usb_phy_data, phys[(phy)->id])
> +
> +static int brcm_usb_phy_init(struct phy *gphy)
> +{
> + struct brcm_usb_phy *phy = phy_get_drvdata(gphy);
> + struct brcm_usb_phy_data *priv = to_brcm_usb_phy_data(phy);
> +
> + /*
> + * Use a lock to make sure a second caller waits until
> + * the base phy is inited before using it.
> + */
> + mutex_lock(&priv->mutex);
> + if (priv->init_count++ == 0) {
> + clk_enable(priv->usb_20_clk);
> + clk_enable(priv->usb_30_clk);
> + brcm_usb_init_common(&priv->ini);
> + }
> + mutex_unlock(&priv->mutex);
> + if (phy->id == BRCM_USB_PHY_2_0)
> + brcm_usb_init_eohci(&priv->ini);
> + else if (phy->id == BRCM_USB_PHY_3_0)
> + brcm_usb_init_xhci(&priv->ini);
> + phy->inited = true;
> + dev_dbg(&gphy->dev, "INIT, id: %d, total: %d\n", phy->id,
> + priv->init_count);
> +
> + return 0;
> +}
> +
> +static int brcm_usb_phy_exit(struct phy *gphy)
> +{
> + struct brcm_usb_phy *phy = phy_get_drvdata(gphy);
> + struct brcm_usb_phy_data *priv = to_brcm_usb_phy_data(phy);
> +
> + dev_dbg(&gphy->dev, "EXIT\n");
> + if (phy->id == BRCM_USB_PHY_2_0)
> + brcm_usb_uninit_eohci(&priv->ini);
> + if (phy->id == BRCM_USB_PHY_3_0)
> + brcm_usb_uninit_xhci(&priv->ini);
> +
> + /* If both xhci and eohci are gone, reset everything else */
> + mutex_lock(&priv->mutex);
> + if (--priv->init_count == 0) {
> + brcm_usb_uninit_common(&priv->ini);
> + clk_disable(priv->usb_20_clk);
> + clk_disable(priv->usb_30_clk);
> + }
> + mutex_unlock(&priv->mutex);
> + phy->inited = false;
> + return 0;
> +}
> +
> +static struct phy_ops brcm_usb_phy_ops = {
> + .init = brcm_usb_phy_init,
> + .exit = brcm_usb_phy_exit,
> + .owner = THIS_MODULE,
> +};
> +
> +static struct phy *brcm_usb_phy_xlate(struct device *dev,
> + struct of_phandle_args *args)
> +{
> + struct brcm_usb_phy_data *data = dev_get_drvdata(dev);
> +
> + /*
> + * values 0 and 1 are for backward compatibility with
> + * device tree nodes from older bootloaders.
> + */
This hasn't been documented in the dt binding. I think '0' and '1' are not
needed as we have created a new binding.
> + switch (args->args[0]) {
> + case 0:
> + case PHY_TYPE_USB2:
> + if (data->phys[BRCM_USB_PHY_2_0].phy)
> + return data->phys[BRCM_USB_PHY_2_0].phy;
> + dev_warn(dev, "Error, 2.0 Phy not found\n");
> + break;
> + case 1:
> + case PHY_TYPE_USB3:
> + if (data->phys[BRCM_USB_PHY_3_0].phy)
> + return data->phys[BRCM_USB_PHY_3_0].phy;
> + dev_warn(dev, "Error, 3.0 Phy not found\n");
> + break;
> + }
> + return ERR_PTR(-ENODEV);
> +}
> +
> +static int name_to_value(struct value_to_name_map *table, int count,
> + const char *name, int *value)
> +{
> + int x;
> +
> + *value = 0;
> + for (x = 0; x < count; x++) {
> + if (sysfs_streq(name, table[x].name)) {
it's generally for use with sysfs strings. I don't think that's required here.
Thanks
Kishon
More information about the linux-arm-kernel
mailing list