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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-15 01:05:21 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-15 01:05:21 +0400
commit4964e0664c80680fa6b28ef91381c076a5b25c2c (patch)
tree62099c5aaeee7274bcc66bcfba35d479affa97cf /arch/mips/ath79/dev-usb.c
parent0a80939b3e6af4b0dc93bf88ec02fd7e90a16f1b (diff)
parent7bf6612e8a9d6a0b3b82e8e2611942be1258b307 (diff)
downloadlinux-4964e0664c80680fa6b28ef91381c076a5b25c2c.tar.xz
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (119 commits) MIPS: Delete unused function add_temporary_entry. MIPS: Set default pci cache line size. MIPS: Flush huge TLB MIPS: Octeon: Remove SYS_SUPPORTS_HIGHMEM. MIPS: Octeon: Add support for OCTEON II PCIe MIPS: Octeon: Update PCI Latency timer and enable more error reporting. MIPS: Alchemy: Update cpu-feature-overrides MIPS: Alchemy: db1200: Improve PB1200 detection. MIPS: Alchemy: merge Au1000 and Au1300-style IRQ controller code. MIPS: Alchemy: chain IRQ controllers to MIPS IRQ controller MIPS: Alchemy: irq: register pm at irq init time MIPS: Alchemy: Touchscreen support on DB1100 MIPS: Alchemy: Hook up IrDA on DB1000/DB1100 net/irda: convert au1k_ir to platform driver. MIPS: Alchemy: remove unused board headers MTD: nand: make au1550nd.c a platform_driver MIPS: Netlogic: Mark Netlogic chips as SMT capable MIPS: Netlogic: Add support for XLP 3XX cores MIPS: Netlogic: Merge some of XLR/XLP wakup code MIPS: Netlogic: Add default XLP config. ... Fix up trivial conflicts in arch/mips/kernel/{perf_event_mipsxx.c, traps.c} and drivers/tty/serial/Makefile
Diffstat (limited to 'arch/mips/ath79/dev-usb.c')
-rw-r--r--arch/mips/ath79/dev-usb.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c
new file mode 100644
index 000000000000..002d6d2afe04
--- /dev/null
+++ b/arch/mips/ath79/dev-usb.c
@@ -0,0 +1,197 @@
+/*
+ * Atheros AR7XXX/AR9XXX USB Host Controller device
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Parts of this file are based on Atheros' 2.6.15 BSP
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include "common.h"
+#include "dev-usb.h"
+
+static struct resource ath79_ohci_resources[] = {
+ [0] = {
+ /* .start and .end fields are filled dynamically */
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = ATH79_MISC_IRQ_OHCI,
+ .end = ATH79_MISC_IRQ_OHCI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ath79_ohci_dmamask = DMA_BIT_MASK(32);
+static struct platform_device ath79_ohci_device = {
+ .name = "ath79-ohci",
+ .id = -1,
+ .resource = ath79_ohci_resources,
+ .num_resources = ARRAY_SIZE(ath79_ohci_resources),
+ .dev = {
+ .dma_mask = &ath79_ohci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+static struct resource ath79_ehci_resources[] = {
+ [0] = {
+ /* .start and .end fields are filled dynamically */
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = ATH79_CPU_IRQ_USB,
+ .end = ATH79_CPU_IRQ_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 ath79_ehci_dmamask = DMA_BIT_MASK(32);
+static struct platform_device ath79_ehci_device = {
+ .name = "ath79-ehci",
+ .id = -1,
+ .resource = ath79_ehci_resources,
+ .num_resources = ARRAY_SIZE(ath79_ehci_resources),
+ .dev = {
+ .dma_mask = &ath79_ehci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+#define AR71XX_USB_RESET_MASK (AR71XX_RESET_USB_HOST | \
+ AR71XX_RESET_USB_PHY | \
+ AR71XX_RESET_USB_OHCI_DLL)
+
+static void __init ath79_usb_setup(void)
+{
+ void __iomem *usb_ctrl_base;
+
+ ath79_device_reset_set(AR71XX_USB_RESET_MASK);
+ mdelay(1000);
+ ath79_device_reset_clear(AR71XX_USB_RESET_MASK);
+
+ usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
+
+ /* Turning on the Buff and Desc swap bits */
+ __raw_writel(0xf0000, usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG);
+
+ /* WAR for HW bug. Here it adjusts the duration between two SOFS */
+ __raw_writel(0x20c00, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
+
+ iounmap(usb_ctrl_base);
+
+ mdelay(900);
+
+ ath79_ohci_resources[0].start = AR71XX_OHCI_BASE;
+ ath79_ohci_resources[0].end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1;
+ platform_device_register(&ath79_ohci_device);
+
+ ath79_ehci_resources[0].start = AR71XX_EHCI_BASE;
+ ath79_ehci_resources[0].end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1;
+ ath79_ehci_device.name = "ar71xx-ehci";
+ platform_device_register(&ath79_ehci_device);
+}
+
+static void __init ar7240_usb_setup(void)
+{
+ void __iomem *usb_ctrl_base;
+
+ ath79_device_reset_clear(AR7240_RESET_OHCI_DLL);
+ ath79_device_reset_set(AR7240_RESET_USB_HOST);
+
+ mdelay(1000);
+
+ ath79_device_reset_set(AR7240_RESET_OHCI_DLL);
+ ath79_device_reset_clear(AR7240_RESET_USB_HOST);
+
+ usb_ctrl_base = ioremap(AR7240_USB_CTRL_BASE, AR7240_USB_CTRL_SIZE);
+
+ /* WAR for HW bug. Here it adjusts the duration between two SOFS */
+ __raw_writel(0x3, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
+
+ iounmap(usb_ctrl_base);
+
+ ath79_ohci_resources[0].start = AR7240_OHCI_BASE;
+ ath79_ohci_resources[0].end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1;
+ platform_device_register(&ath79_ohci_device);
+}
+
+static void __init ar724x_usb_setup(void)
+{
+ ath79_device_reset_set(AR724X_RESET_USBSUS_OVERRIDE);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR724X_RESET_USB_HOST);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR724X_RESET_USB_PHY);
+ mdelay(10);
+
+ ath79_ehci_resources[0].start = AR724X_EHCI_BASE;
+ ath79_ehci_resources[0].end = AR724X_EHCI_BASE + AR724X_EHCI_SIZE - 1;
+ ath79_ehci_device.name = "ar724x-ehci";
+ platform_device_register(&ath79_ehci_device);
+}
+
+static void __init ar913x_usb_setup(void)
+{
+ ath79_device_reset_set(AR913X_RESET_USBSUS_OVERRIDE);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR913X_RESET_USB_HOST);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR913X_RESET_USB_PHY);
+ mdelay(10);
+
+ ath79_ehci_resources[0].start = AR913X_EHCI_BASE;
+ ath79_ehci_resources[0].end = AR913X_EHCI_BASE + AR913X_EHCI_SIZE - 1;
+ ath79_ehci_device.name = "ar913x-ehci";
+ platform_device_register(&ath79_ehci_device);
+}
+
+static void __init ar933x_usb_setup(void)
+{
+ ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR933X_RESET_USB_HOST);
+ mdelay(10);
+
+ ath79_device_reset_clear(AR933X_RESET_USB_PHY);
+ mdelay(10);
+
+ ath79_ehci_resources[0].start = AR933X_EHCI_BASE;
+ ath79_ehci_resources[0].end = AR933X_EHCI_BASE + AR933X_EHCI_SIZE - 1;
+ ath79_ehci_device.name = "ar933x-ehci";
+ platform_device_register(&ath79_ehci_device);
+}
+
+void __init ath79_register_usb(void)
+{
+ if (soc_is_ar71xx())
+ ath79_usb_setup();
+ else if (soc_is_ar7240())
+ ar7240_usb_setup();
+ else if (soc_is_ar7241() || soc_is_ar7242())
+ ar724x_usb_setup();
+ else if (soc_is_ar913x())
+ ar913x_usb_setup();
+ else if (soc_is_ar933x())
+ ar933x_usb_setup();
+ else
+ BUG();
+}