2 * linux/arch/arm/mach-omap2/board-n800-usb.c
4 * Copyright (C) 2006 Nokia Corporation
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/types.h>
13 #include <linux/delay.h>
14 #include <linux/platform_device.h>
15 #include <linux/clk.h>
16 #include <linux/err.h>
17 #include <linux/usb/musb.h>
18 #include <mach/gpmc.h>
19 #include <mach/gpio.h>
22 #define TUSB_ASYNC_CS 1
23 #define TUSB_SYNC_CS 4
24 #define GPIO_TUSB_INT 58
25 #define GPIO_TUSB_ENABLE 0
27 static int tusb_set_power(int state);
28 static int tusb_set_clock(struct clk *osc_ck, int state);
30 #if defined(CONFIG_USB_MUSB_OTG)
31 # define BOARD_MODE MUSB_OTG
32 #elif defined(CONFIG_USB_MUSB_PERIPHERAL)
33 # define BOARD_MODE MUSB_PERIPHERAL
34 #else /* defined(CONFIG_USB_MUSB_HOST) */
35 # define BOARD_MODE MUSB_HOST
38 static struct musb_hdrc_eps_bits musb_eps[] = {
71 static struct musb_hdrc_config musb_config = {
82 static struct musb_hdrc_platform_data tusb_data = {
84 .set_power = tusb_set_power,
85 .set_clock = tusb_set_clock,
86 .min_power = 25, /* x2 = 50 mA drawn from VBUS as peripheral */
87 .power = 100, /* Max 100 mA VBUS for host mode */
89 .config = &musb_config,
93 * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
94 * 1.5 V voltage regulators of PM companion chip. Companion chip will then
95 * provide then PGOOD signal to TUSB6010 which will release it from reset.
97 static int tusb_set_power(int state)
102 omap_set_gpio_dataout(GPIO_TUSB_ENABLE, 1);
105 /* Wait until TUSB6010 pulls INT pin down */
107 while (i && omap_get_gpio_datain(GPIO_TUSB_INT)) {
113 printk(KERN_ERR "tusb: powerup failed\n");
117 omap_set_gpio_dataout(GPIO_TUSB_ENABLE, 0);
124 static int osc_ck_on;
126 static int tusb_set_clock(struct clk *osc_ck, int state)
147 void __init n800_usb_init(void)
150 static char announce[] __initdata = KERN_INFO "TUSB 6010\n";
152 /* PM companion chip power control pin */
153 ret = omap_request_gpio(GPIO_TUSB_ENABLE);
155 printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
159 omap_set_gpio_direction(GPIO_TUSB_ENABLE, 0);
163 ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
164 TUSB_ASYNC_CS, TUSB_SYNC_CS,
165 GPIO_TUSB_INT, 0x3f);
174 omap_free_gpio(GPIO_TUSB_ENABLE);