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ARM: DaVinci: usb setup 

Declare the musb_hdrc platform device for DaVinci.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
hifive-unleashed-5.1
David Brownell 2008-09-07 23:41:57 -07:00 committed by Kevin Hilman
parent d395e6ad98
commit cece6e5af2
3 changed files with 120 additions and 1 deletions
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2
arch/arm/mach-davinci/Makefile
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@ -5,7 +5,7 @@
# Common objects
obj-y := time.o irq.o clock.o serial.o io.o id.o psc.o \
gpio.o mux.o devices.o
gpio.o mux.o devices.o usb.o
# Board specific
obj-$(CONFIG_MACH_DAVINCI_EVM) += board-evm.o

3
arch/arm/mach-davinci/include/mach/common.h
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@ -16,4 +16,7 @@ struct sys_timer;
extern struct sys_timer davinci_timer;
/* parameters describe VBUS sourcing for host mode */
extern void setup_usb(unsigned mA, unsigned potpgt_msec);
#endif /* __ARCH_ARM_MACH_DAVINCI_COMMON_H */

116
arch/arm/mach-davinci/usb.c 100644
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@ -0,0 +1,116 @@
/*
* USB
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/usb/musb.h>
#include <linux/usb/otg.h>
#include <mach/common.h>
#include <mach/hardware.h>
#if defined(CONFIG_USB_MUSB_HDRC) || defined(CONFIG_USB_MUSB_HDRC_MODULE)
static struct musb_hdrc_eps_bits musb_eps[] = {
{ "ep1_tx", 8, },
{ "ep1_rx", 8, },
{ "ep2_tx", 8, },
{ "ep2_rx", 8, },
{ "ep3_tx", 5, },
{ "ep3_rx", 5, },
{ "ep4_tx", 5, },
{ "ep4_rx", 5, },
};
static struct musb_hdrc_config musb_config = {
.multipoint = true,
.dyn_fifo = true,
.soft_con = true,
.dma = true,
.num_eps = 5,
.dma_channels = 8,
.ram_bits = 10,
.eps_bits = musb_eps,
};
static struct musb_hdrc_platform_data usb_data = {
#if defined(CONFIG_USB_MUSB_OTG)
/* OTG requires a Mini-AB connector */
.mode = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_PERIPHERAL)
.mode = MUSB_PERIPHERAL,
#elif defined(CONFIG_USB_MUSB_HOST)
.mode = MUSB_HOST,
#endif
.config = &musb_config,
};
static struct resource usb_resources[] = {
{
/* physical address */
.start = DAVINCI_USB_OTG_BASE,
.end = DAVINCI_USB_OTG_BASE + 0x5ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_USBINT,
.flags = IORESOURCE_IRQ,
},
};
static u64 usb_dmamask = DMA_32BIT_MASK;
static struct platform_device usb_dev = {
.name = "musb_hdrc",
.id = -1,
.dev = {
.platform_data = &usb_data,
.dma_mask = &usb_dmamask,
.coherent_dma_mask = DMA_32BIT_MASK,
},
.resource = usb_resources,
.num_resources = ARRAY_SIZE(usb_resources),
};
#ifdef CONFIG_USB_MUSB_OTG
static struct otg_transceiver *xceiv;
struct otg_transceiver *otg_get_transceiver(void)
{
if (xceiv)
get_device(xceiv->dev);
return xceiv;
}
EXPORT_SYMBOL(otg_get_transceiver);
int otg_set_transceiver(struct otg_transceiver *x)
{
if (xceiv && x)
return -EBUSY;
xceiv = x;
return 0;
}
EXPORT_SYMBOL(otg_set_transceiver);
#endif
void __init setup_usb(unsigned mA, unsigned potpgt_msec)
{
usb_data.power = mA / 2;
usb_data.potpgt = potpgt_msec / 2;
platform_device_register(&usb_dev);
}
#else
void __init setup_usb(unsigned mA, unsigned potpgt_msec)
{
}
#endif /* CONFIG_USB_MUSB_HDRC */