--- /dev/null
+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_ */
projects / openwrt / staging / ldir.git / blobdiff