+++ /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 / svn-archive / archive.git / blobdiff