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- From 30d22baef255c99a12c4858ce4ab0d45f0d8c9ae Mon Sep 17 00:00:00 2001
- From: Florian Fainelli <florian@openwrt.org>
- Date: Mon, 28 Jan 2013 20:06:24 +0100
- Subject: [PATCH 06/11] MIPS: BCM63XX: add support for the on-chip OHCI
- controller
- Broadcom BCM63XX SoCs include an on-chip OHCI controller which can be
- driven by the ohci-platform generic driver by using specific power
- on/off/suspend callback 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-ohci.c | 94 ++++++++++++++++++++
- .../asm/mach-bcm63xx/bcm63xx_dev_usb_ohci.h | 6 ++
- 3 files changed, 101 insertions(+), 1 deletion(-)
- create mode 100644 arch/mips/bcm63xx/dev-usb-ohci.c
- create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_ohci.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-dsp.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-usbd.o usb-common.o
- + dev-wdt.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-ohci.c
- @@ -0,0 +1,94 @@
- +/*
- + * 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/usb/ohci_pdriver.h>
- +#include <linux/dma-mapping.h>
- +#include <linux/clk.h>
- +#include <linux/delay.h>
- +
- +#include <bcm63xx_cpu.h>
- +#include <bcm63xx_regs.h>
- +#include <bcm63xx_io.h>
- +#include <bcm63xx_usb_priv.h>
- +#include <bcm63xx_dev_usb_ohci.h>
- +
- +static struct resource ohci_resources[] = {
- + {
- + .start = -1, /* filled at runtime */
- + .end = -1, /* filled at runtime */
- + .flags = IORESOURCE_MEM,
- + },
- + {
- + .start = -1, /* filled at runtime */
- + .flags = IORESOURCE_IRQ,
- + },
- +};
- +
- +static u64 ohci_dmamask = DMA_BIT_MASK(32);
- +
- +static struct clk *usb_host_clock;
- +
- +static int bcm63xx_ohci_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_ohci_cfg_set();
- +
- + return 0;
- +}
- +
- +static void bcm63xx_ohci_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_ohci_pdata bcm63xx_ohci_pdata = {
- + .big_endian_desc = 1,
- + .big_endian_mmio = 1,
- + .no_big_frame_no = 1,
- + .num_ports = 1,
- + .power_on = bcm63xx_ohci_power_on,
- + .power_off = bcm63xx_ohci_power_off,
- + .power_suspend = bcm63xx_ohci_power_off,
- +};
- +
- +static struct platform_device bcm63xx_ohci_device = {
- + .name = "ohci-platform",
- + .id = -1,
- + .num_resources = ARRAY_SIZE(ohci_resources),
- + .resource = ohci_resources,
- + .dev = {
- + .platform_data = &bcm63xx_ohci_pdata,
- + .dma_mask = &ohci_dmamask,
- + .coherent_dma_mask = DMA_BIT_MASK(32),
- + },
- +};
- +
- +int __init bcm63xx_ohci_register(void)
- +{
- + if (BCMCPU_IS_6345() || BCMCPU_IS_6338())
- + return -ENODEV;
- +
- + ohci_resources[0].start = bcm63xx_regset_address(RSET_OHCI0);
- + ohci_resources[0].end = ohci_resources[0].start;
- + ohci_resources[0].end += RSET_OHCI_SIZE - 1;
- + ohci_resources[1].start = bcm63xx_get_irq_number(IRQ_OHCI0);
- +
- + return platform_device_register(&bcm63xx_ohci_device);
- +}
- --- /dev/null
- +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_usb_ohci.h
- @@ -0,0 +1,6 @@
- +#ifndef BCM63XX_DEV_USB_OHCI_H_
- +#define BCM63XX_DEV_USB_OHCI_H_
- +
- +int bcm63xx_ohci_register(void);
- +
- +#endif /* BCM63XX_DEV_USB_OHCI_H_ */
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