[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / mach-s3c2410 / usb-simtec.c

/* linux/arch/arm/mach-s3c2410/usb-simtec.c
 *
 * Copyright (c) 2004,2005 Simtec Electronics
 *   Ben Dooks <ben@simtec.co.uk>
 *
 * http://www.simtec.co.uk/products/EB2410ITX/
 *
 * Simtec BAST and Thorcom VR1000 USB port support functions
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
*/

#define DEBUG

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/device.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <mach/bast-map.h>
#include <mach/bast-irq.h>
#include <mach/usb-control.h>
#include <mach/regs-gpio.h>

#include <mach/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>

#include <asm/plat-s3c24xx/devs.h>
#include "usb-simtec.h"

/* control power and monitor over-current events on various Simtec
 * designed boards.
*/

static unsigned int power_state[2];

static void
usb_simtec_powercontrol(int port, int to)
{
	pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);

	power_state[port] = to;

	if (power_state[0] && power_state[1])
		s3c2410_gpio_setpin(S3C2410_GPB4, 0);
	else
		s3c2410_gpio_setpin(S3C2410_GPB4, 1);
}

static irqreturn_t
usb_simtec_ocirq(int irq, void *pw)
{
	struct s3c2410_hcd_info *info = pw;

	if (s3c2410_gpio_getpin(S3C2410_GPG10) == 0) {
		pr_debug("usb_simtec: over-current irq (oc detected)\n");
		s3c2410_usb_report_oc(info, 3);
	} else {
		pr_debug("usb_simtec: over-current irq (oc cleared)\n");
		s3c2410_usb_report_oc(info, 0);
	}

	return IRQ_HANDLED;
}

static void usb_simtec_enableoc(struct s3c2410_hcd_info *info, int on)
{
	int ret;

	if (on) {
		ret = request_irq(IRQ_USBOC, usb_simtec_ocirq,
				  IRQF_DISABLED | IRQF_TRIGGER_RISING |
				   IRQF_TRIGGER_FALLING,
				  "USB Over-current", info);
		if (ret != 0) {
			printk(KERN_ERR "failed to request usb oc irq\n");
		}
	} else {
		free_irq(IRQ_USBOC, info);
	}
}

static struct s3c2410_hcd_info usb_simtec_info = {
	.port[0]	= {
		.flags	= S3C_HCDFLG_USED
	},
	.port[1]	= {
		.flags	= S3C_HCDFLG_USED
	},

	.power_control	= usb_simtec_powercontrol,
	.enable_oc	= usb_simtec_enableoc,
};


int usb_simtec_init(void)
{
	printk("USB Power Control, (c) 2004 Simtec Electronics\n");
	s3c_device_usb.dev.platform_data = &usb_simtec_info;

	s3c2410_gpio_cfgpin(S3C2410_GPB4, S3C2410_GPB4_OUTP);
	s3c2410_gpio_setpin(S3C2410_GPB4, 1);
	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/* linux/arch/arm/mach-s3c2410/usb-simtec.c
1da177e4 LT	2	*
484ae6bd	3	* Copyright (c) 2004,2005 Simtec Electronics
1da177e4 LT	4	* Ben Dooks <ben@simtec.co.uk>
	5	*
	6	* http://www.simtec.co.uk/products/EB2410ITX/
	7	*
	8	* Simtec BAST and Thorcom VR1000 USB port support functions
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
1da177e4 LT	13	*/
	14
	15	#define DEBUG
	16
	17	#include <linux/kernel.h>
	18	#include <linux/types.h>
	19	#include <linux/interrupt.h>
	20	#include <linux/list.h>
	21	#include <linux/timer.h>
	22	#include <linux/init.h>
	23	#include <linux/device.h>
	24
	25	#include <asm/mach/arch.h>
	26	#include <asm/mach/map.h>
	27	#include <asm/mach/irq.h>
	28
a09e64fb RK	29	#include <mach/bast-map.h>
	30	#include <mach/bast-irq.h>
	31	#include <mach/usb-control.h>
	32	#include <mach/regs-gpio.h>
1da177e4	33
a09e64fb	34	#include <mach/hardware.h>
1da177e4 LT	35	#include <asm/io.h>
1da177e4 LT	36	#include <asm/irq.h>
1da177e4	37
a21765a7	38	#include <asm/plat-s3c24xx/devs.h>
1da177e4 LT	39	#include "usb-simtec.h"
	40
	41	/* control power and monitor over-current events on various Simtec
	42	* designed boards.
	43	*/
	44
484ae6bd BD	45	static unsigned int power_state[2];
484ae6bd BD	46
1da177e4 LT	47	static void
	48	usb_simtec_powercontrol(int port, int to)
	49	{
	50	pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);
	51
484ae6bd BD	52	power_state[port] = to;
	53
	54	if (power_state[0] && power_state[1])
	55	s3c2410_gpio_setpin(S3C2410_GPB4, 0);
	56	else
	57	s3c2410_gpio_setpin(S3C2410_GPB4, 1);
1da177e4 LT	58	}
	59
	60	static irqreturn_t
0cd61b68	61	usb_simtec_ocirq(int irq, void *pw)
1da177e4	62	{
2a7057e3	63	struct s3c2410_hcd_info *info = pw;
1da177e4 LT	64
	65	if (s3c2410_gpio_getpin(S3C2410_GPG10) == 0) {
	66	pr_debug("usb_simtec: over-current irq (oc detected)\n");
484ae6bd	67	s3c2410_usb_report_oc(info, 3);
1da177e4 LT	68	} else {
1da177e4 LT	69	pr_debug("usb_simtec: over-current irq (oc cleared)\n");
484ae6bd	70	s3c2410_usb_report_oc(info, 0);
1da177e4 LT	71	}
	72
	73	return IRQ_HANDLED;
	74	}
	75
	76	static void usb_simtec_enableoc(struct s3c2410_hcd_info *info, int on)
	77	{
	78	int ret;
	79
	80	if (on) {
9ded96f2	81	ret = request_irq(IRQ_USBOC, usb_simtec_ocirq,
52e405ea TG	82	IRQF_DISABLED \| IRQF_TRIGGER_RISING \|
52e405ea TG	83	IRQF_TRIGGER_FALLING,
1da177e4 LT	84	"USB Over-current", info);
	85	if (ret != 0) {
	86	printk(KERN_ERR "failed to request usb oc irq\n");
	87	}
1da177e4 LT	88	} else {
	89	free_irq(IRQ_USBOC, info);
	90	}
	91	}
	92
	93	static struct s3c2410_hcd_info usb_simtec_info = {
	94	.port[0] = {
	95	.flags = S3C_HCDFLG_USED
	96	},
	97	.port[1] = {
	98	.flags = S3C_HCDFLG_USED
	99	},
	100
	101	.power_control = usb_simtec_powercontrol,
	102	.enable_oc = usb_simtec_enableoc,
	103	};
	104
	105
	106	int usb_simtec_init(void)
	107	{
	108	printk("USB Power Control, (c) 2004 Simtec Electronics\n");
	109	s3c_device_usb.dev.platform_data = &usb_simtec_info;
	110
	111	s3c2410_gpio_cfgpin(S3C2410_GPB4, S3C2410_GPB4_OUTP);
	112	s3c2410_gpio_setpin(S3C2410_GPB4, 1);
	113	return 0;
	114	}