Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit cece6e5a authored by David Brownell's avatar David Brownell Committed by Kevin Hilman
Browse files

ARM: DaVinci: usb setup 



Declare the musb_hdrc platform device for DaVinci.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent d395e6ad

arch/arm/mach-davinci/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -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

arch/arm/mach-davinci/include/mach/common.h

+3 −0
Original line number Diff line number Diff line
@@ -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 */

arch/arm/mach-davinci/usb.c

0 → 100644
+116 −0
Original line number Diff line number Diff line 
/*

 * 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 */