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sh: Add OHCI USB support for SH7786

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Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Kuninori Morimoto 2009-03-12 08:40:15 +00:00 committed by Paul Mundt
parent 600fa578a9
commit 4c3f450ba4
3 changed files with 86 additions and 1 deletions
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83
arch/sh/kernel/cpu/sh4a/setup-sh7786.c
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@ -18,6 +18,7 @@
#include <linux/serial_sci.h>
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/dma-mapping.h>
#include <asm/mmzone.h>
static struct plat_sci_port sci_platform_data[] = {
@ -68,12 +69,94 @@ static struct platform_device sci_device = {
},
};
static struct resource usb_ohci_resources[] = {
[0] = {
.start = 0xffe70400,
.end = 0xffe704ff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = 77,
.end = 77,
.flags = IORESOURCE_IRQ,
},
};
static u64 usb_ohci_dma_mask = DMA_BIT_MASK(32);
static struct platform_device usb_ohci_device = {
.name = "sh_ohci",
.id = -1,
.dev = {
.dma_mask = &usb_ohci_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(usb_ohci_resources),
.resource = usb_ohci_resources,
};
static struct platform_device *sh7786_devices[] __initdata = {
&sci_device,
&usb_ohci_device,
};
/*
* Please call this function if your platform board
* use external clock for USB
* */
#define USBCTL0 0xffe70858
#define CLOCK_MODE_MASK 0xffffff7f
#define EXT_CLOCK_MODE 0x00000080
void __init sh7786_usb_use_exclock(void)
{
u32 val = __raw_readl(USBCTL0) & CLOCK_MODE_MASK;
__raw_writel(val | EXT_CLOCK_MODE, USBCTL0);
}
#define USBINITREG1 0xffe70094
#define USBINITREG2 0xffe7009c
#define USBINITVAL1 0x00ff0040
#define USBINITVAL2 0x00000001
#define USBPCTL1 0xffe70804
#define USBST 0xffe70808
#define PHY_ENB 0x00000001
#define PLL_ENB 0x00000002
#define PHY_RST 0x00000004
#define ACT_PLL_STATUS 0xc0000000
static void __init sh7786_usb_setup(void)
{
int i = 1000000;
/*
* USB initial settings
*
* The following settings are necessary
* for using the USB modules.
*
* see "USB Inital Settings" for detail
*/
__raw_writel(USBINITVAL1, USBINITREG1);
__raw_writel(USBINITVAL2, USBINITREG2);
/*
* Set the PHY and PLL enable bit
*/
__raw_writel(PHY_ENB | PLL_ENB, USBPCTL1);
while (i-- &&
((__raw_readl(USBST) & ACT_PLL_STATUS) != ACT_PLL_STATUS))
cpu_relax();
if (i) {
/* Set the PHY RST bit */
__raw_writel(PHY_ENB | PLL_ENB | PHY_RST, USBPCTL1);
printk(KERN_INFO "sh7786 usb setup done\n");
}
}
static int __init sh7786_devices_setup(void)
{
sh7786_usb_setup();
return platform_add_devices(sh7786_devices,
ARRAY_SIZE(sh7786_devices));
}

1
drivers/usb/Kconfig
View File

@ -47,6 +47,7 @@ config USB_ARCH_HAS_OHCI
default y if CPU_SUBTYPE_SH7720
default y if CPU_SUBTYPE_SH7721
default y if CPU_SUBTYPE_SH7763
default y if CPU_SUBTYPE_SH7786
# more:
default PCI

3
drivers/usb/host/ohci-hcd.c
View File

@ -1049,7 +1049,8 @@ MODULE_LICENSE ("GPL");
#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
defined(CONFIG_CPU_SUBTYPE_SH7763)
defined(CONFIG_CPU_SUBTYPE_SH7763) || \
defined(CONFIG_CPU_SUBTYPE_SH7786)
#include "ohci-sh.c"
#define PLATFORM_DRIVER ohci_hcd_sh_driver
#endif