/branches/18.06.1/target/linux/brcm63xx/patches-4.9/108-MIPS-BCM63XX-add-support-for-the-on-chip-EHCI-contro.patch |
@@ -0,0 +1,136 @@ |
From e38f13bd6408769c0b565bb1079024f496eee121 Mon Sep 17 00:00:00 2001 |
From: Florian Fainelli <florian@openwrt.org> |
Date: Mon, 28 Jan 2013 20:06:27 +0100 |
Subject: [PATCH 09/11] MIPS: BCM63XX: add support for the on-chip EHCI |
controller |
|
Broadcom BCM63XX SoCs include an on-chip EHCI controller which can be |
driven by the generic ehci-platform driver by using specific power |
on/off/suspend callbacks to manage clocks and hardware specific |
configuration. |
|
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> |
Signed-off-by: Florian Fainelli <florian@openwrt.org> |
--- |
arch/mips/bcm63xx/Makefile | 2 +- |
arch/mips/bcm63xx/dev-usb-ehci.c | 92 ++++++++++++++++++++ |
.../asm/mach-bcm63xx/bcm63xx_dev_usb_ehci.h | 6 ++ |
3 files changed, 99 insertions(+), 1 deletion(-) |
create mode 100644 arch/mips/bcm63xx/dev-usb-ehci.c |
create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_ehci.h |
|
--- a/arch/mips/bcm63xx/Makefile |
+++ b/arch/mips/bcm63xx/Makefile |
@@ -1,7 +1,7 @@ |
obj-y += clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o reset.o \ |
setup.o timer.o dev-enet.o dev-flash.o dev-pcmcia.o \ |
dev-rng.o dev-spi.o dev-hsspi.o dev-uart.o dev-wdt.o \ |
- dev-usb-ohci.o dev-usb-usbd.o usb-common.o |
+ dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o usb-common.o |
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o |
|
obj-y += boards/ |
--- /dev/null |
+++ b/arch/mips/bcm63xx/dev-usb-ehci.c |
@@ -0,0 +1,92 @@ |
+/* |
+ * This file is subject to the terms and conditions of the GNU General Public |
+ * 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) 2013 Florian Fainelli <florian@openwrt.org> |
+ */ |
+ |
+#include <linux/init.h> |
+#include <linux/kernel.h> |
+#include <linux/platform_device.h> |
+#include <linux/clk.h> |
+#include <linux/delay.h> |
+#include <linux/usb/ehci_pdriver.h> |
+#include <linux/dma-mapping.h> |
+ |
+#include <bcm63xx_cpu.h> |
+#include <bcm63xx_regs.h> |
+#include <bcm63xx_io.h> |
+#include <bcm63xx_usb_priv.h> |
+#include <bcm63xx_dev_usb_ehci.h> |
+ |
+static struct resource ehci_resources[] = { |
+ { |
+ .start = -1, /* filled at runtime */ |
+ .end = -1, /* filled at runtime */ |
+ .flags = IORESOURCE_MEM, |
+ }, |
+ { |
+ .start = -1, /* filled at runtime */ |
+ .flags = IORESOURCE_IRQ, |
+ }, |
+}; |
+ |
+static u64 ehci_dmamask = DMA_BIT_MASK(32); |
+ |
+static struct clk *usb_host_clock; |
+ |
+static int bcm63xx_ehci_power_on(struct platform_device *pdev) |
+{ |
+ usb_host_clock = clk_get(&pdev->dev, "usbh"); |
+ if (IS_ERR_OR_NULL(usb_host_clock)) |
+ return -ENODEV; |
+ |
+ clk_prepare_enable(usb_host_clock); |
+ |
+ bcm63xx_usb_priv_ehci_cfg_set(); |
+ |
+ return 0; |
+} |
+ |
+static void bcm63xx_ehci_power_off(struct platform_device *pdev) |
+{ |
+ if (!IS_ERR_OR_NULL(usb_host_clock)) { |
+ clk_disable_unprepare(usb_host_clock); |
+ clk_put(usb_host_clock); |
+ } |
+} |
+ |
+static struct usb_ehci_pdata bcm63xx_ehci_pdata = { |
+ .big_endian_desc = 1, |
+ .big_endian_mmio = 1, |
+ .power_on = bcm63xx_ehci_power_on, |
+ .power_off = bcm63xx_ehci_power_off, |
+ .power_suspend = bcm63xx_ehci_power_off, |
+}; |
+ |
+static struct platform_device bcm63xx_ehci_device = { |
+ .name = "ehci-platform", |
+ .id = -1, |
+ .num_resources = ARRAY_SIZE(ehci_resources), |
+ .resource = ehci_resources, |
+ .dev = { |
+ .platform_data = &bcm63xx_ehci_pdata, |
+ .dma_mask = &ehci_dmamask, |
+ .coherent_dma_mask = DMA_BIT_MASK(32), |
+ }, |
+}; |
+ |
+int __init bcm63xx_ehci_register(void) |
+{ |
+ if (!BCMCPU_IS_6328() && !BCMCPU_IS_6358() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368()) |
+ return 0; |
+ |
+ ehci_resources[0].start = bcm63xx_regset_address(RSET_EHCI0); |
+ ehci_resources[0].end = ehci_resources[0].start; |
+ ehci_resources[0].end += RSET_EHCI_SIZE - 1; |
+ ehci_resources[1].start = bcm63xx_get_irq_number(IRQ_EHCI0); |
+ |
+ return platform_device_register(&bcm63xx_ehci_device); |
+} |
--- /dev/null |
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_ehci.h |
@@ -0,0 +1,6 @@ |
+#ifndef BCM63XX_DEV_USB_EHCI_H_ |
+#define BCM63XX_DEV_USB_EHCI_H_ |
+ |
+int bcm63xx_ehci_register(void); |
+ |
+#endif /* BCM63XX_DEV_USB_EHCI_H_ */ |