diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.1/103-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.1/103-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.1/103-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch b/target/linux/brcm63xx/patches-4.1/103-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch new file mode 100644 index 0000000..40bbe08 --- /dev/null +++ b/target/linux/brcm63xx/patches-4.1/103-MIPS-BCM63XX-add-OHCI-EHCI-configuration-bits-to-com.patch @@ -0,0 +1,169 @@ +From 28758a9da77954ed323f86123ef448c6a563c037 Mon Sep 17 00:00:00 2001 +From: Florian Fainelli <florian@openwrt.org> +Date: Mon, 28 Jan 2013 20:06:22 +0100 +Subject: [PATCH 04/11] MIPS: BCM63XX: add OHCI/EHCI configuration bits to + common USB code + +This patch updates the common USB code touching the USB private +registers with the specific bits to properly enable OHCI and EHCI +controllers on BCM63xx SoCs. As a result we now need to protect access +to Read Modify Write sequences using a spinlock because we cannot +guarantee that any of the exposed helper will not be called +concurrently. + +Signed-off-by: Maxime Bizon <mbizon@freebox.fr> +Signed-off-by: Florian Fainelli <florian@openwrt.org> +--- + arch/mips/bcm63xx/usb-common.c | 97 ++++++++++++++++++++ + .../include/asm/mach-bcm63xx/bcm63xx_usb_priv.h | 2 + + 2 files changed, 99 insertions(+) + +--- a/arch/mips/bcm63xx/usb-common.c ++++ b/arch/mips/bcm63xx/usb-common.c +@@ -5,10 +5,12 @@ + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * ++ * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + * Copyright (C) 2012 Kevin Cernekee <cernekee@gmail.com> + * Copyright (C) 2012 Broadcom Corporation + * + */ ++#include <linux/spinlock.h> + #include <linux/export.h> + + #include <bcm63xx_cpu.h> +@@ -16,9 +18,14 @@ + #include <bcm63xx_io.h> + #include <bcm63xx_usb_priv.h> + ++static DEFINE_SPINLOCK(usb_priv_reg_lock); ++ + void bcm63xx_usb_priv_select_phy_mode(u32 portmask, bool is_device) + { + u32 val; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&usb_priv_reg_lock, flags); + + val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG); + if (is_device) { +@@ -36,12 +43,17 @@ void bcm63xx_usb_priv_select_phy_mode(u3 + else + val &= ~USBH_PRIV_SWAP_USBD_MASK; + bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_SWAP_6368_REG); ++ ++ spin_unlock_irqrestore(&usb_priv_reg_lock, flags); + } + EXPORT_SYMBOL(bcm63xx_usb_priv_select_phy_mode); + + void bcm63xx_usb_priv_select_pullup(u32 portmask, bool is_on) + { + u32 val; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&usb_priv_reg_lock, flags); + + val = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_UTMI_CTL_6368_REG); + if (is_on) +@@ -49,5 +61,90 @@ void bcm63xx_usb_priv_select_pullup(u32 + else + val |= (portmask << USBH_PRIV_UTMI_CTL_NODRIV_SHIFT); + bcm_rset_writel(RSET_USBH_PRIV, val, USBH_PRIV_UTMI_CTL_6368_REG); ++ ++ spin_unlock_irqrestore(&usb_priv_reg_lock, flags); + } + EXPORT_SYMBOL(bcm63xx_usb_priv_select_pullup); ++ ++/* The following array represents the meaning of the DESC/DATA ++ * endian swapping with respect to the CPU configured endianness ++ * ++ * DATA ENDN mmio descriptor ++ * 0 0 BE invalid ++ * 0 1 BE LE ++ * 1 0 BE BE ++ * 1 1 BE invalid ++ * ++ * Since BCM63XX SoCs are configured to be in big-endian mode ++ * we want configuration at line 3. ++ */ ++void bcm63xx_usb_priv_ohci_cfg_set(void) ++{ ++ u32 reg; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&usb_priv_reg_lock, flags); ++ ++ if (BCMCPU_IS_6348()) ++ bcm_rset_writel(RSET_OHCI_PRIV, 0, OHCI_PRIV_REG); ++ else if (BCMCPU_IS_6358()) { ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG); ++ reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK; ++ reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG); ++ /* ++ * The magic value comes for the original vendor BSP ++ * and is needed for USB to work. Datasheet does not ++ * help, so the magic value is used as-is. ++ */ ++ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, ++ USBH_PRIV_TEST_6358_REG); ++ ++ } else if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) { ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG); ++ reg &= ~USBH_PRIV_SWAP_OHCI_ENDN_MASK; ++ reg |= USBH_PRIV_SWAP_OHCI_DATA_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG); ++ ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG); ++ reg |= USBH_PRIV_SETUP_IOC_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG); ++ } ++ ++ spin_unlock_irqrestore(&usb_priv_reg_lock, flags); ++} ++ ++void bcm63xx_usb_priv_ehci_cfg_set(void) ++{ ++ u32 reg; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&usb_priv_reg_lock, flags); ++ ++ if (BCMCPU_IS_6358()) { ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6358_REG); ++ reg &= ~USBH_PRIV_SWAP_EHCI_ENDN_MASK; ++ reg |= USBH_PRIV_SWAP_EHCI_DATA_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6358_REG); ++ ++ /* ++ * The magic value comes for the original vendor BSP ++ * and is needed for USB to work. Datasheet does not ++ * help, so the magic value is used as-is. ++ */ ++ bcm_rset_writel(RSET_USBH_PRIV, 0x1c0020, ++ USBH_PRIV_TEST_6358_REG); ++ ++ } else if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) { ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SWAP_6368_REG); ++ reg &= ~USBH_PRIV_SWAP_EHCI_ENDN_MASK; ++ reg |= USBH_PRIV_SWAP_EHCI_DATA_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SWAP_6368_REG); ++ ++ reg = bcm_rset_readl(RSET_USBH_PRIV, USBH_PRIV_SETUP_6368_REG); ++ reg |= USBH_PRIV_SETUP_IOC_MASK; ++ bcm_rset_writel(RSET_USBH_PRIV, reg, USBH_PRIV_SETUP_6368_REG); ++ } ++ ++ spin_unlock_irqrestore(&usb_priv_reg_lock, flags); ++} +--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_usb_priv.h ++++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_usb_priv.h +@@ -5,5 +5,7 @@ + + void bcm63xx_usb_priv_select_phy_mode(u32 portmask, bool is_device); + void bcm63xx_usb_priv_select_pullup(u32 portmask, bool is_on); ++void bcm63xx_usb_priv_ohci_cfg_set(void); ++void bcm63xx_usb_priv_ehci_cfg_set(void); + + #endif /* BCM63XX_USB_PRIV_H_ */ |