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Commit 525d75b3 authored by Igor Grinberg's avatar Igor Grinberg Committed by Tony Lindgren
Browse files

omap3: cm-t3517: add support for usb host 



add support for hsusb host ports 1, 2 and on-module usb hub.

Signed-off-by: default avatarIgor Grinberg <grinberg@compulab.co.il>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 46893a56

arch/arm/mach-omap2/board-cm-t3517.c

+50 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/leds.h>

#include <linux/rtc-v3020.h>
@@ -36,6 +37,7 @@ 
#include <plat/board.h>

#include <plat/common.h>

#include <plat/control.h>

#include <plat/usb.h>



#include "mux.h"
@@ -100,6 +102,47 @@ static void __init cm_t3517_init_rtc(void) 
static inline void cm_t3517_init_rtc(void) {}

#endif



#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)

#define HSUSB1_RESET_GPIO	(146)

#define HSUSB2_RESET_GPIO	(147)

#define USB_HUB_RESET_GPIO	(152)



static struct ehci_hcd_omap_platform_data cm_t3517_ehci_pdata __initdata = {

	.port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,

	.port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,

	.port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,



	.phy_reset  = true,

	.reset_gpio_port[0]  = HSUSB1_RESET_GPIO,

	.reset_gpio_port[1]  = HSUSB2_RESET_GPIO,

	.reset_gpio_port[2]  = -EINVAL,

};



static int cm_t3517_init_usbh(void)

{

	int err;



	err = gpio_request(USB_HUB_RESET_GPIO, "usb hub rst");

	if (err) {

		pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);

	} else {

		gpio_direction_output(USB_HUB_RESET_GPIO, 0);

		udelay(10);

		gpio_set_value(USB_HUB_RESET_GPIO, 1);

		msleep(1);

	}



	usb_ehci_init(&cm_t3517_ehci_pdata);



	return 0;

}

#else

static inline int cm_t3517_init_usbh(void)

{

	return 0;

}

#endif



static struct omap_board_config_kernel cm_t3517_config[] __initdata = {

};
@@ -121,6 +164,12 @@ static struct omap_board_mux board_mux[] __initdata = { 
	OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),

	OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),

	OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),

	/* HSUSB1 RESET */

	OMAP3_MUX(UART2_TX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),

	/* HSUSB2 RESET */

	OMAP3_MUX(UART2_RX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),

	/* CM-T3517 USB HUB nRESET */

	OMAP3_MUX(MCBSP4_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),



	{ .reg_offset = OMAP_MUX_TERMINATOR },

};
@@ -131,6 +180,7 @@ static void __init cm_t3517_init(void) 
	omap_serial_init();

	cm_t3517_init_leds();

	cm_t3517_init_rtc();

	cm_t3517_init_usbh();

}



MACHINE_START(CM_T3517, "Compulab CM-T3517")