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Commit aa18ef60 authored by NISHIMOTO Hiroki's avatar NISHIMOTO Hiroki Committed by Paul Mundt
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ARM: mach-shmobile: G4EVM USBHS support 



Add G4EVM platform data and a magic setup sequence to
initialize the r8a66597 block aka USBHS in sh7377.

Signed-off-by: default avatarNISHIMOTO Hiroki <nishimoto.hiroki@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 276b4f62

arch/arm/mach-shmobile/board-g4evm.c

+59 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/mtd/mtd.h>

#include <linux/mtd/partitions.h>

#include <linux/mtd/physmap.h>

#include <linux/usb/r8a66597.h>

#include <linux/io.h>

#include <linux/gpio.h>

#include <mach/sh7377.h>
@@ -86,9 +87,50 @@ static struct platform_device nor_flash_device = { 
	.resource	= nor_flash_resources,

};



/* USBHS */

void usb_host_port_power(int port, int power)

{

	if (!power) /* only power-on supported for now */

		return;



	/* set VBOUT/PWEN and EXTLP0 in DVSTCTR */

	__raw_writew(__raw_readw(0xe6890008) | 0x600, 0xe6890008);

}



static struct r8a66597_platdata usb_host_data = {

	.on_chip = 1,

	.port_power = usb_host_port_power,

};



static struct resource usb_host_resources[] = {

	[0] = {

		.name	= "USBHS",

		.start	= 0xe6890000,

		.end	= 0xe68900e5,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= 65,

		.end	= 65,

		.flags	= IORESOURCE_IRQ,

	},

};



static struct platform_device usb_host_device = {

	.name		= "r8a66597_hcd",

	.id		= 0,

	.dev = {

		.platform_data		= &usb_host_data,

		.dma_mask		= NULL,

		.coherent_dma_mask	= 0xffffffff,

	},

	.num_resources	= ARRAY_SIZE(usb_host_resources),

	.resource	= usb_host_resources,

};



static struct platform_device *g4evm_devices[] __initdata = {

	&nor_flash_device,

	&usb_host_device,

};



static struct map_desc g4evm_io_desc[] __initdata = {
@@ -137,6 +179,23 @@ static void __init g4evm_init(void) 
	gpio_direction_output(GPIO_PORT113, 1);

	gpio_export(GPIO_PORT113, 1);



	/* USBHS */

	gpio_request(GPIO_FN_VBUS_0, NULL);

	gpio_request(GPIO_FN_PWEN, NULL);

	gpio_request(GPIO_FN_OVCN, NULL);

	gpio_request(GPIO_FN_OVCN2, NULL);

	gpio_request(GPIO_FN_EXTLP, NULL);

	gpio_request(GPIO_FN_IDIN, NULL);



	/* enable clock in SMSTPCR3 */

	__raw_writel(__raw_readl(0xe615013c) & ~(1 << 22), 0xe615013c);



	/* setup USB phy */

	__raw_writew(0x0200, 0xe605810a);       /* USBCR1 */

	__raw_writew(0x00e0, 0xe60581c0);       /* CPFCH */

	__raw_writew(0x6010, 0xe60581c6);       /* CGPOSR */

	__raw_writew(0x8a0a, 0xe605810c);       /* USBCR2 */



	sh7377_add_standard_devices();



	platform_add_devices(g4evm_devices, ARRAY_SIZE(g4evm_devices));