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Message-ID: <578436C6.4000509@gmail.com>
Date: Mon, 11 Jul 2016 17:16:06 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: Al Cooper <alcooperx@...il.com>, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org,
bcm-kernel-feedback-list@...adcom.com, kishon@...com
Subject: Re: [PATCH V2 2/2] usb: phy: phy-brcm-usb: Add Broadcom STB USB Phy
driver
+Kishon,
On 05/27/2016 12:57 PM, Al Cooper wrote:
> Add a new USB Phy driver for Broadcom STB SoCs. This driver
> supports all Broadcom STB ARM SoCs. This driver in combination
> with the generic ohci, ehci and xhci platform drivers will enable
> USB1.1, USB2.0 and USB3.0 support. This Phy driver also supports
> the Broadcom UDC gadget driver.
>
> Signed-off-by: Al Cooper <alcooperx@...il.com>
> ---
> .../bindings/phy/brcm,brcmstb-usb-phy.txt | 39 +
> MAINTAINERS | 7 +
> drivers/phy/Kconfig | 10 +
> drivers/phy/Makefile | 2 +
> drivers/phy/phy-brcm-usb-init.c | 792 +++++++++++++++++++++
> drivers/phy/phy-brcm-usb-init.h | 49 ++
> drivers/phy/phy-brcm-usb.c | 206 ++++++
> 7 files changed, 1105 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/brcm,brcmstb-usb-phy.txt
> create mode 100644 drivers/phy/phy-brcm-usb-init.c
> create mode 100644 drivers/phy/phy-brcm-usb-init.h
> create mode 100644 drivers/phy/phy-brcm-usb.c
>
> diff --git a/Documentation/devicetree/bindings/phy/brcm,brcmstb-usb-phy.txt b/Documentation/devicetree/bindings/phy/brcm,brcmstb-usb-phy.txt
> new file mode 100644
> index 0000000..34fa9dd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/brcm,brcmstb-usb-phy.txt
> @@ -0,0 +1,39 @@
> +Broadcom STB USB PHY
> +
> +Required properties:
> + - compatible: brcm,brcmstb-usb-phy
> + - reg: two offset and length pairs. The second pair specifies the
> + USB 3.0 related registers and is only required for PHYs
> + that support USB 3.0
> + - #phy-cells: Shall be 1 as it expects one argument for setting
> + the type of the PHY. Possible values are 0 (1.1 and 2.0),
> + 1 (3.0)
> +
> +
> +Optional Properties:
> +- clocks : phandle + clock specifier for the phy clocks
> +- clock-names: string, clock name
> +- ipp: Invert Port Power
> +- ioc: Invert Over Current detection
> +- has_xhci: Contains an optional 3.0 PHY
> +- device: PHY Device mode. Possible values are: 0 (Host), 1 (Device)
> + or 2 (DRD)
> +
> +
> +
> +Example:
> +
> +usbphy_0: usb-phy@...70200 {
> + reg = <0xf0470200 0xb8>,
> + <0xf0471940 0x6c0>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "brcm,brcmstb-usb-phy";
> + ioc = <1>;
> + ipp = <1>;
> + #phy-cells = <1>;
> + ranges;
> + has_xhci;
> + clocks = <&sw_usb20>;
> + clock-names = "sw_usb";
> +};
> diff --git a/MAINTAINERS b/MAINTAINERS
> index ed1229e..4d529e7 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2631,6 +2631,13 @@ S: Maintained
> F: drivers/bcma/
> F: include/linux/bcma/
>
> +BROADCOM STB USB PHY DRIVER
> +M: Al Cooper <alcooperx@...il.com>
> +L: linux-usb@...r.kernel.org
> +L: bcm-kernel-feedback-list@...adcom.com
> +S: Supported
> +F: drivers/phy/phy-brcm-usb*
> +
> BROADCOM SYSTEMPORT ETHERNET DRIVER
> M: Florian Fainelli <f.fainelli@...il.com>
> L: netdev@...r.kernel.org
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index b869b98..61a0244 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -432,6 +432,16 @@ config PHY_CYGNUS_PCIE
> Enable this to support the Broadcom Cygnus PCIe PHY.
> If unsure, say N.
>
> +config BRCM_USB_PHY
> + tristate "Broadcom USB PHY driver"
> + depends on OF && USB && ARCH_BRCMSTB
> + select GENERIC_PHY
> + default y
> + help
> + Enable this to support the Broadcom USB PHY on
> + Broadcom STB SoCs.
> + If unsure, say Y.
> +
> source "drivers/phy/tegra/Kconfig"
>
> endmenu
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index 9c3e73c..babb0c7 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -9,6 +9,8 @@ obj-$(CONFIG_PHY_BERLIN_SATA) += phy-berlin-sata.o
> obj-$(CONFIG_PHY_DM816X_USB) += phy-dm816x-usb.o
> obj-$(CONFIG_ARMADA375_USBCLUSTER_PHY) += phy-armada375-usb2.o
> obj-$(CONFIG_BCM_KONA_USB2_PHY) += phy-bcm-kona-usb2.o
> +obj-$(CONFIG_BRCM_USB_PHY) += phy-brcm-usb.o
> +obj-$(CONFIG_BRCM_USB_PHY) += phy-brcm-usb-init.o
> obj-$(CONFIG_PHY_EXYNOS_DP_VIDEO) += phy-exynos-dp-video.o
> obj-$(CONFIG_PHY_EXYNOS_MIPI_VIDEO) += phy-exynos-mipi-video.o
> obj-$(CONFIG_PHY_LPC18XX_USB_OTG) += phy-lpc18xx-usb-otg.o
> diff --git a/drivers/phy/phy-brcm-usb-init.c b/drivers/phy/phy-brcm-usb-init.c
> new file mode 100644
> index 0000000..f5d8c32
> --- /dev/null
> +++ b/drivers/phy/phy-brcm-usb-init.c
> @@ -0,0 +1,792 @@
> +/*
> + * Copyright (C) 2014-2016 Broadcom
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + * 3. Neither the name of the project nor the names of its contributors
> + * may be used to endorse or promote products derived from this software
> + * without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + */
> +
> +/*
> + * This module is used by both the bootloader and Linux and
> + * contains USB 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"
> +
> +/* 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_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_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_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_DEFAULT,
> + 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_COUNT,
> +};
> +
> +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_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(reg, field) \
> + (usb_reg_bits_map[USB_CTRL_##reg##_##field##_SELECTOR])
> +
> +#define USB_CTRL_SET_FAMILY(base, reg, field) \
> + usb_ctrl_set_family(USB_CTRL_REG(base, reg), \
> + USB_CTRL_##reg##_##field##_SELECTOR)
> +#define USB_CTRL_UNSET_FAMILY(base, reg, field) \
> + usb_ctrl_unset_family(USB_CTRL_REG(base, reg), \
> + USB_CTRL_##reg##_##field##_SELECTOR)
> +#define USB_CTRL_SET(base, reg, field) \
> + usb_ctrl_set(USB_CTRL_REG(base, reg), \
> + USB_CTRL_##reg##_##field##_MASK)
> +#define USB_CTRL_UNSET(base, reg, field) \
> + usb_ctrl_unset(USB_CTRL_REG(base, reg), \
> + USB_CTRL_##reg##_##field##_MASK)
> +
> +#define MDIO_USB2 0
> +#define MDIO_USB3 (1 << 31)
> +
> +#define USB_CTRL_SETUP_CONDITIONAL_BITS ( \
> + USB_CTRL_MASK(SETUP, BABO) | \
> + USB_CTRL_MASK(SETUP, FNHW) | \
> + USB_CTRL_MASK(SETUP, FNBO) | \
> + USB_CTRL_MASK(SETUP, WABO) | \
> + USB_CTRL_MASK(SETUP, IOC) | \
> + USB_CTRL_MASK(SETUP, IPP))
> +
> +#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 {
> + uint32_t id;
> + int type;
> +};
> +
> +static const struct id_to_type id_to_type_table[] = {
> + { 0x33900000, BRCM_FAMILY_3390A0 },
> + { 0x33900010, BRCM_FAMILY_3390A0 },
> + { 0x72500010, BRCM_FAMILY_7250B0 },
> + { 0x72710000, BRCM_FAMILY_7271A0 },
> + { 0x72680000, BRCM_FAMILY_7271A0 },
> + { 0x73640000, BRCM_FAMILY_7364A0 },
> + { 0x73640010, BRCM_FAMILY_7364A0 },
> + { 0x73660020, BRCM_FAMILY_7366C0 },
> + { 0x74371000, BRCM_FAMILY_74371A0 },
> + { 0x74390010, BRCM_FAMILY_7439B0 },
> + { 0x74450030, BRCM_FAMILY_7445D0 },
> + { 0x74450040, BRCM_FAMILY_7445D0 },
> +};
> +
> +static const uint32_t *usb_reg_bits_map;
> +static enum brcm_family_type my_family;
> +
> +static const uint32_t
> +usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
> + /* DEFAULT (default to latest chip, currently the 7271) */
> + [BRCM_FAMILY_DEFAULT] = {
> + 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 */
> + },
> + /* 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,
> + },
> + /* 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 */
> + },
> + /* 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,
> + },
> + /* 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 */
> + },
> + /* 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 */
> + },
> + /* 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 */
> + },
> + /* 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,
> + },
> + /* 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 */
> + },
> +};
> +
> +static inline uint32_t 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);
> + else
> + return readl_relaxed(addr);
> +}
> +
> +static inline void brcmusb_writel(uint32_t val, void __iomem *addr)
> +{
> + /* See brcmnand_readl() comments */
> + if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(__BIG_ENDIAN))
> + __raw_writel(val, addr);
> + else
> + writel_relaxed(val, addr);
> +}
> +
> +static inline void usb_ctrl_unset(void __iomem *reg, uint32_t mask)
> +{
> + brcmusb_writel(brcmusb_readl(reg) & ~(mask), reg);
> +};
> +
> +static inline void usb_ctrl_set(void __iomem *reg, uint32_t mask)
> +{
> + brcmusb_writel(brcmusb_readl(reg) | (mask), reg);
> +};
> +
> +static inline void usb_ctrl_unset_family(void __iomem *reg, uint32_t field)
> +{
> + uint32_t mask;
> +
> + mask = usb_reg_bits_map[field];
> + usb_ctrl_unset(reg, mask);
> +};
> +
> +static inline void usb_ctrl_set_family(void __iomem *reg, uint32_t field)
> +{
> + uint32_t mask;
> +
> + mask = usb_reg_bits_map[field];
> + usb_ctrl_set(reg, mask);
> +};
> +
> +
> +static uint32_t usb_mdio_read(void __iomem *ctrl_base, uint32_t reg, int mode)
> +{
> + uint32_t 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);
> + udelay(10);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> + udelay(10);
> +
> + return brcmusb_readl(USB_CTRL_REG(ctrl_base, MDIO2)) & 0xffff;
> +}
> +
> +static void usb_mdio_write(void __iomem *ctrl_base, uint32_t reg,
> + uint32_t val, int mode)
> +{
> + uint32_t 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);
> + udelay(10);
> + brcmusb_writel(data, USB_CTRL_REG(ctrl_base, MDIO));
> +}
> +
> +
> +static void 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);
> + msleep(1);
> + USB_CTRL_SET(ctrl_base, PLL_CTL, PLL_RESETB);
> + msleep(10);
> +
> +}
> +
> +
> +static void usb2_eye_fix(void __iomem *ctrl_base)
> +{
> + /* Increase USB 2.0 TX level to meet spec requirement */
> + usb_mdio_write(ctrl_base, 0x1f, 0x80a0, MDIO_USB2);
> + usb_mdio_write(ctrl_base, 0x0a, 0xc6a0, MDIO_USB2);
> +}
> +
> +
> +static void usb3_pll_fix(void __iomem *ctrl_base)
> +{
> + /* Set correct window for PLL lock detect */
> + usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x07, 0x1503, MDIO_USB3);
> +}
> +
> +
> +static void usb3_enable_pipe_reset(void __iomem *ctrl_base)
> +{
> + uint32_t val;
> +
> + /* Re-enable USB 3.0 pipe reset */
> + usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + val = usb_mdio_read(ctrl_base, 0x0f, MDIO_USB3) | 0x200;
> + usb_mdio_write(ctrl_base, 0x0f, val, MDIO_USB3);
> +}
> +
> +
> +static void usb3_enable_sigdet(void __iomem *ctrl_base)
> +{
> + uint32_t val, ofs;
> + int ii;
> +
> + ofs = 0;
> + for (ii = 0; ii < 2; ++ii) {
> + /* Set correct default for sigdet */
> + usb_mdio_write(ctrl_base, 0x1f, (0x8080 + ofs), MDIO_USB3);
> + val = usb_mdio_read(ctrl_base, 0x05, MDIO_USB3);
> + val = (val & ~0x800f) | 0x800d;
> + usb_mdio_write(ctrl_base, 0x05, val, MDIO_USB3);
> + ofs = 0x1000;
> + }
> +}
> +
> +
> +static void usb3_enable_skip_align(void __iomem *ctrl_base)
> +{
> + uint32_t val, ofs;
> + int ii;
> +
> + ofs = 0;
> + for (ii = 0; ii < 2; ++ii) {
> + /* Set correct default for SKIP align */
> + usb_mdio_write(ctrl_base, 0x1f, (0x8060 + ofs), MDIO_USB3);
> + val = usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0x200;
> + usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> + ofs = 0x1000;
> + }
> +}
> +
> +
> +static void usb3_pll_54Mhz(void __iomem *ctrl_base)
> +{
> + uint32_t ofs;
> + int ii;
> +
> + if (my_family != BRCM_FAMILY_7271A0)
> + return;
> + /*
> + * On the 7271a0 and 7268a0, the reference clock for the
> + * 3.0 PLL has been changed from 50MHz to 54MHz so the
> + * PLL needs to be reprogramed. Later chips will have
> + * the PLL programmed correctly on power-up.
> + * See SWLINUX-4006.
> + */
> +
> + /* set USB 3.0 PLL to accept 54Mhz reference clock */
> + USB_CTRL_UNSET(ctrl_base, USB30_CTL1, phy3_pll_seq_start);
> +
> + usb_mdio_write(ctrl_base, 0x1f, 0x8000, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x10, 0x5784, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x11, 0x01d0, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x12, 0x1DE8, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x13, 0xAA80, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x14, 0x8826, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x15, 0x0044, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x16, 0x8000, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x17, 0x0851, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x18, 0x0000, MDIO_USB3);
> +
> + /* both ports */
> + ofs = 0;
> + for (ii = 0; ii < 2; ++ii) {
> + usb_mdio_write(ctrl_base, 0x1f, (0x8040 + ofs), MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x03, 0x0090, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x04, 0x0134, MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x1f, (0x8020 + ofs), MDIO_USB3);
> + usb_mdio_write(ctrl_base, 0x01, 0x00e2, MDIO_USB3);
> + ofs = 0x1000;
> + }
> +
> + /* restart PLL sequence */
> + USB_CTRL_SET(ctrl_base, USB30_CTL1, phy3_pll_seq_start);
> + msleep(1);
> +}
> +
> +
> +static void usb3_ssc_enable(void __iomem *ctrl_base)
> +{
> + uint32_t val;
> +
> + /* Enable USB 3.0 TX spread spectrum */
> + usb_mdio_write(ctrl_base, 0x1f, 0x8040, MDIO_USB3);
> + val = usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0xf;
> + 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).
> + */
> + usb_mdio_write(ctrl_base, 0x1f, 0x9040, MDIO_USB3);
> + val = usb_mdio_read(ctrl_base, 0x01, MDIO_USB3) | 0xf;
> + usb_mdio_write(ctrl_base, 0x01, val, MDIO_USB3);
> +}
> +
> +
> +static void usb3_phy_workarounds(void __iomem *ctrl_base)
> +{
> + usb3_pll_fix(ctrl_base);
> + usb3_pll_54Mhz(ctrl_base);
> + usb3_ssc_enable(ctrl_base);
> + usb3_enable_pipe_reset(ctrl_base);
> + usb3_enable_sigdet(ctrl_base);
> + usb3_enable_skip_align(ctrl_base);
> +}
> +
> +
> +static void memc_fix(struct brcm_usb_common_init_params *params)
> +{
> + void __iomem *ctrl_base = params->ctrl_regs;
> + uint32_t prid;
> +
> + if (my_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(ctrl_base, SETUP, scb2_en);
> + }
> +}
> +
> +static void usb3_otp_fix(struct brcm_usb_common_init_params *params)
> +{
> + void __iomem *xhci_ec_base = params->xhci_ec_regs;
> + uint32_t 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 xhci_soft_reset(void __iomem *ctrl, int on_off)
> +{
> + /* Assert reset */
> + if (on_off) {
> + if (USB_CTRL_MASK_FAMILY(USB_PM, xhc_soft_resetb))
> + USB_CTRL_UNSET_FAMILY(ctrl, USB_PM, xhc_soft_resetb);
> + else
> + USB_CTRL_UNSET_FAMILY(ctrl,
> + USB30_CTL1, xhc_soft_resetb);
> + }
> + /* De-assert reset */
> + else {
> + if (USB_CTRL_MASK_FAMILY(USB_PM, xhc_soft_resetb))
> + USB_CTRL_SET_FAMILY(ctrl, USB_PM, xhc_soft_resetb);
> + else
> + USB_CTRL_SET_FAMILY(ctrl, USB30_CTL1, xhc_soft_resetb);
> + }
> +}
> +
> +static enum brcm_family_type get_family_type(
> + struct brcm_usb_common_init_params *params)
> +{
> + unsigned int x;
> +
> + for (x = 0;
> + x < (sizeof(id_to_type_table) / sizeof(struct id_to_type));
> + x++)
> + /* ignore the minor rev */
> + if ((params->family_id & 0xfffffff0) ==
> + id_to_type_table[x].id) {
> + return id_to_type_table[x].type;
> + }
> + return BRCM_FAMILY_DEFAULT;
> +}
> +
> +void brcm_usb_common_init(struct brcm_usb_common_init_params *params)
> +{
> + uint32_t reg;
> + void __iomem *ctrl = params->ctrl_regs;
> + int change_ipp = 0;
> +
> + my_family = get_family_type(params);
> + usb_reg_bits_map = &usb_reg_bits_map_table[my_family][0];
> + xhci_soft_reset(ctrl, 1);
> +
> + 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);
> + }
> + if (my_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(ctrl, EBRIDGE, ESTOP_SCB_REQ);
> +
> + /* Take USB out of power down */
> + if (USB_CTRL_MASK_FAMILY(PLL_CTL, PLL_IDDQ_PWRDN)) {
> + USB_CTRL_UNSET_FAMILY(ctrl, PLL_CTL, PLL_IDDQ_PWRDN);
> + /* 1 millisecond - for USB clocks to settle down */
> + msleep(1);
> + }
> +
> + /* 3390a0 & 7439b0 so far. */
> + if (USB_CTRL_MASK_FAMILY(USB_PM, USB_PWRDN)) {
> + USB_CTRL_UNSET_FAMILY(ctrl, USB_PM, USB_PWRDN);
> + /* 1 millisecond - for USB clocks to settle down */
> + msleep(1);
> + }
> +
> + /* Starting with the 7445d0, there are no longer separate 3.0
> + * versions of IOC and IPP.
> + */
> + if (USB_CTRL_MASK_FAMILY(USB30_CTL1, usb3_ioc)) {
> + if (params->ioc)
> + USB_CTRL_SET_FAMILY(ctrl, USB30_CTL1, usb3_ioc);
> + if (params->ipp == 1)
> + USB_CTRL_SET_FAMILY(ctrl, USB30_CTL1, usb3_ipp);
> + }
> +
> + if ((my_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(ctrl, SETUP, ss_ehci64bit_en);
> +
> + /*
> + * 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);
> +
> + /* Block auto PLL suspend by USB2 PHY */
> + USB_CTRL_SET(ctrl, PLL_CTL, PLL_SUSPEND_EN);
> +
> + usb_phy_ldo_fix(ctrl);
> + usb2_eye_fix(ctrl);
> + if (params->has_xhci)
> + usb3_phy_workarounds(ctrl);
> +
> + /* Setup the endian bits */
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, SETUP));
> + reg &= ~USB_CTRL_SETUP_CONDITIONAL_BITS;
> + reg |= ENDIAN_SETTINGS;
> +
> + if (my_family == BRCM_FAMILY_7364A0)
> + /* Suppress overcurrent indication from USB30 ports for A0 */
> + reg |= USB_CTRL_MASK_FAMILY(SETUP, OC3_DISABLE);
> +
> + if (USB_CTRL_MASK_FAMILY(SETUP, strap_ipp_sel))
> + if (params->ipp != 2)
> + /* override ipp strap pin (if it exits) */
> + reg &= ~(USB_CTRL_MASK_FAMILY(SETUP, strap_ipp_sel));
> +
> + /*
> + * Make sure the the second and third memory controller
> + * interfaces are enabled.
> + */
> + if (USB_CTRL_MASK_FAMILY(SETUP, scb1_en))
> + reg |= USB_CTRL_MASK_FAMILY(SETUP, scb1_en);
> + if (USB_CTRL_MASK_FAMILY(SETUP, scb2_en))
> + reg |= USB_CTRL_MASK_FAMILY(SETUP, scb2_en);
> +
> + /* Override the default OC and PP polarity */
> + if (params->ioc)
> + reg |= USB_CTRL_MASK(SETUP, IOC);
> + if ((params->ipp == 1) &&
> + ((reg & USB_CTRL_MASK(SETUP, IPP)) == 0)) {
> + change_ipp = 1;
> + 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 (change_ipp)
> + msleep(50);
> + memc_fix(params);
> + if (params->has_xhci) {
> + xhci_soft_reset(ctrl, 0);
> + usb3_otp_fix(params);
> + }
> + if (USB_CTRL_MASK_FAMILY(USB_DEVICE_CTL1, port_mode)) {
> + reg = brcmusb_readl(USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + reg &= ~USB_CTRL_MASK_FAMILY(USB_DEVICE_CTL1, port_mode);
> + reg |= params->device_mode;
> + brcmusb_writel(reg, USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
> + }
> + if (USB_CTRL_MASK_FAMILY(USB_PM, bdc_soft_resetb)) {
> + switch (params->device_mode) {
> + case USB_CTLR_DEVICE_OFF:
> + USB_CTRL_UNSET_FAMILY(ctrl, USB_PM, bdc_soft_resetb);
> + break;
> + case USB_CTLR_DEVICE_ON:
> + case USB_CTLR_DEVICE_DUAL:
> + USB_CTRL_SET_FAMILY(ctrl, USB_PM, bdc_soft_resetb);
> + break;
> + }
> + }
> +}
> +
> diff --git a/drivers/phy/phy-brcm-usb-init.h b/drivers/phy/phy-brcm-usb-init.h
> new file mode 100644
> index 0000000..e49918c
> --- /dev/null
> +++ b/drivers/phy/phy-brcm-usb-init.h
> @@ -0,0 +1,49 @@
> +/*
> + * Copyright (C) 2014-2016 Broadcom
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + * 1. Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * 2. Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in the
> + * documentation and/or other materials provided with the distribution.
> + * 3. Neither the name of the project nor the names of its contributors
> + * may be used to endorse or promote products derived from this software
> + * without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
> + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
> + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
> + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
> + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
> + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
> + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
> + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
> + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
> + * SUCH DAMAGE.
> + */
> +
> +#ifndef _PHY_BRCM_USB_INIT_H
> +#define _PHY_BRCM_USB_INIT_H
> +
> +#define USB_CTLR_DEVICE_OFF 0
> +#define USB_CTLR_DEVICE_ON 1
> +#define USB_CTLR_DEVICE_DUAL 2
> +
> +struct brcm_usb_common_init_params {
> + void __iomem *ctrl_regs;
> + void __iomem *xhci_ec_regs;
> + int ioc;
> + int ipp;
> + int has_xhci;
> + int device_mode;
> + uint32_t family_id;
> + uint32_t product_id;
> +};
> +
> +void brcm_usb_common_init(struct brcm_usb_common_init_params *params);
> +
> +#endif /* _PHY_BRCM_USB_INIT_H */
> diff --git a/drivers/phy/phy-brcm-usb.c b/drivers/phy/phy-brcm-usb.c
> new file mode 100644
> index 0000000..5edca1c
> --- /dev/null
> +++ b/drivers/phy/phy-brcm-usb.c
> @@ -0,0 +1,206 @@
> +/*
> + * phy-brcm-usb.c - Broadcom USB Phy Driver
> + *
> + * Copyright (C) 2015 Broadcom Corporation
> + *
> + * 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/of_address.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/interrupt.h>
> +#include "phy-brcm-usb-init.h"
> +#include <linux/soc/brcmstb/brcmstb.h>
> +
> +
> +enum brcm_usb_phy_id {
> + BRCM_USB_PHY_2_0,
> + BRCM_USB_PHY_3_0,
> + BRCM_USB_PHY_ID_MAX
> +};
> +
> +struct brcm_usb_phy_data {
> + struct brcm_usb_common_init_params ini;
> + void __iomem *ctrl_regs;
> + void __iomem *xhci_ec_regs;
> + int ioc;
> + int ipp;
> + int has_xhci;
> + int device_mode;
> + struct clk *usb_clk;
> + int num_phys;
> + struct brcm_usb_phy {
> + struct phy *phy;
> + unsigned int index;
> + } phys[BRCM_USB_PHY_ID_MAX];
> +};
> +
> +#define to_brcm_usb_phy_data(phy) \
> + container_of((phy), struct brcm_usb_phy_data, phys[(phy)->index])
> +
> +static struct phy_ops brcm_usb_phy_ops = {
> + .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);
> +
> + if (args->args[0] >= data->num_phys)
> + return ERR_PTR(-ENODEV);
> +
> + return data->phys[args->args[0]].phy;
> +}
> +
> +static int brcm_usb_phy_probe(struct platform_device *pdev)
> +{
> + struct resource *res;
> + struct device *dev = &pdev->dev;
> + struct brcm_usb_phy_data *priv;
> + struct phy *gphy;
> + struct phy_provider *phy_provider;
> + struct device_node *dn = pdev->dev.of_node;
> + const u32 *prop;
> + int i;
> + int err;
> + const char *device_mode;
> + char err_msg_ioremap[] = "can't map register space\n";
> +
> + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> + platform_set_drvdata(pdev, priv);
> +
> + priv->ini.family_id = brcmstb_get_family_id();
> + priv->ini.product_id = brcmstb_get_product_id();
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (res == NULL) {
> + dev_err(&pdev->dev, "can't get USB_CTRL base address\n");
> + return -EINVAL;
> + }
> + priv->ini.ctrl_regs = devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(priv->ini.ctrl_regs)) {
> + dev_err(dev, err_msg_ioremap);
> + return -EINVAL;
> + }
> +
> + /* The XHCI EC registers are optional */
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> + if (res != NULL) {
> + priv->ini.xhci_ec_regs =
> + devm_ioremap_resource(&pdev->dev, res);
> + if (IS_ERR(priv->ini.xhci_ec_regs)) {
> + dev_err(&pdev->dev, err_msg_ioremap);
> + return -EINVAL;
> + }
> + }
> +
> + of_property_read_u32(dn, "ipp", &priv->ini.ipp);
> + of_property_read_u32(dn, "ioc", &priv->ini.ioc);
> +
> + priv->ini.device_mode = USB_CTLR_DEVICE_OFF;
> + err = of_property_read_string(dn, "device", &device_mode);
> + if (err == 0) {
> + if (strcmp(device_mode, "on") == 0)
> + priv->ini.device_mode = USB_CTLR_DEVICE_ON;
> + if (strcmp(device_mode, "dual") == 0)
> + priv->ini.device_mode = USB_CTLR_DEVICE_DUAL;
> + }
> +
> + prop = of_get_property(dn, "has_xhci", NULL);
> + if (prop) {
> + priv->ini.has_xhci = 1;
> + priv->num_phys = 2;
> + } else {
> + priv->num_phys = 1;
> + }
> +
> + for (i = 0; i < priv->num_phys; i++) {
> + gphy = devm_phy_create(dev, NULL, &brcm_usb_phy_ops);
> + if (IS_ERR(gphy)) {
> + dev_err(dev, "failed to create PHY %d\n", i);
> + return PTR_ERR(gphy);
> + }
> + priv->phys[i].phy = gphy;
> + priv->phys[i].index = i;
> + phy_set_drvdata(gphy, &priv->phys[i]);
> + }
> + phy_provider = devm_of_phy_provider_register(dev,
> + brcm_usb_phy_xlate);
> + if (IS_ERR(phy_provider))
> + return PTR_ERR(phy_provider);
> +
> + priv->usb_clk = of_clk_get_by_name(dn, "sw_usb");
> + if (IS_ERR(priv->usb_clk)) {
> + dev_err(&pdev->dev, "Clock not found in Device Tree\n");
> + priv->usb_clk = NULL;
> + }
> + err = clk_prepare_enable(priv->usb_clk);
> + if (err)
> + return err;
> +
> + brcm_usb_common_init(&priv->ini);
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_PM_SLEEP
> +static int brcm_usb_phy_suspend(struct device *dev)
> +{
> + struct brcm_usb_phy_data *priv = dev_get_drvdata(dev);
> +
> + clk_disable(priv->usb_clk);
> + return 0;
> +}
> +
> +static int brcm_usb_phy_resume(struct device *dev)
> +{
> + struct brcm_usb_phy_data *priv = dev_get_drvdata(dev);
> +
> + clk_enable(priv->usb_clk);
> + brcm_usb_common_init(&priv->ini);
> + return 0;
> +}
> +#endif /* CONFIG_PM_SLEEP */
> +
> +static SIMPLE_DEV_PM_OPS(brcm_usb_phy_pm_ops, brcm_usb_phy_suspend,
> + brcm_usb_phy_resume);
> +
> +static const struct of_device_id brcm_usb_dt_ids[] = {
> + { .compatible = "brcm,brcmstb-usb-phy" },
> + { /* sentinel */ }
> +};
> +
> +MODULE_DEVICE_TABLE(of, brcm_usb_dt_ids);
> +
> +static struct platform_driver brcm_usb_driver = {
> + .probe = brcm_usb_phy_probe,
> + .driver = {
> + .name = "brcmstb-usb-phy",
> + .owner = THIS_MODULE,
> + .pm = &brcm_usb_phy_pm_ops,
> + .of_match_table = brcm_usb_dt_ids,
> + },
> +};
> +
> +module_platform_driver(brcm_usb_driver);
> +
> +MODULE_ALIAS("platform:brcmstb-usb-phy");
> +MODULE_AUTHOR("Al Cooper <alcooperx@...il.com>");
> +MODULE_DESCRIPTION("BRCM USB PHY driver for STB systems");
> +MODULE_LICENSE("GPL v2");
>
--
Florian
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