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/*
* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*
* otg/hardware/mxc91321-gpio.c - Freescale USBOTG ArgonLV gpio and iomux setting
* @(#) sp/root@belcarra.com/debian-black.(none)|otg/platform/mxc/mxc91321-gpio.c|20070822230929|24222
*
* Copyright (c) 2004-2005 Belcarra Technologies Corp
* Copyright (c) 2005-2007 Belcarra Technologies 2005 Corp
*
* By:
* Stuart Lynne <sl@belcarra.com>,
* Bruce Balden <balden@belcarra.com>,
* Shahrad Payandeh <sp@belcarra.com>
*/
/*!
* @file otg/hardware/mxc91321-gpio.c
* @brief Freescale USB Host Controller Driver
*
* @ingroup FSOTG
*/
#include <linux/irq.h>
#include <otg/pcd-include.h>
#include <../arch/arm/mach-mxc91321/iomux.h>
#if defined(CONFIG_OTG_ZASEVB_MC13783_CONNECTIVITY) || defined(CONFIG_OTG_ZASEVB_MC13783_PMIC)
#include <asm/arch/gpio.h>
#include "mxc-lnx.h"
#include "mxc-hardware.h"
#include "isp1301.h"
#include "isp1301-hardware.h"
#endif
#if defined(CONFIG_OTG_ZASEVB_ISP1301)
#include <asm/arch/gpio.h>
#include "mxc-lnx.h"
#include "mxc-hardware.h"
#include "isp1301.h"
#include "isp1301-hardware.h"
#endif
#define ZGPIO_PORT 0
#define ZGPIO_PIN 2
#if defined(CONFIG_OTG_ZASEVB_ISP1301) || defined(_OTG_DOXYGEN)
BOOL zasevb_int_disabled = FALSE;
/* ********************************************************************************************* */
/*!
* zasevb_gpio_int_hndlr() - gpio interrupt handler
* @param irq
* @param dev_id
* @param regs
* @return interrupt handler status
* This disables the gpio interrup and schedules the isp1301 bottom half handler.
*
*/
static irqreturn_t zasevb_gpio_int_hndlr (int irq, void *dev_id, struct pt_regs *regs)
{
disable_irq(IOMUX_TO_IRQ(PIN_GPIO2));
zasevb_int_disabled = TRUE;
TRACE_MSG0(REMOVE_TCD, "ZASEVB GPIO INTERRUPT: SCHEDULE WORK");
// printk(KERN_INFO"%s:\n", __FUNCTION__);
isp1301_bh_wakeup(REMOVE_tcd_instance->otg, FALSE);
return IRQ_HANDLED;
}
/*!
* zasevb_isp1301_bh()- call isp1301 bottom half handler
* @param arg
* This is a wrapper to the isp1301 bottom half handler, it
* re-enables the gpio interrupt after processing complete.
*/
void *zasevb_isp1301_bh(void *arg)
{
TRACE_MSG0(REMOVE_TCD, "ZASEVB GPIO INTERRUPT: ISP1301_BH");
isp1301_bh(arg);
TRACE_MSG0(REMOVE_TCD, "ZASEVB GPIO INTERRUPT: REENABLE");
if (zasevb_int_disabled) {
zasevb_int_disabled = FALSE;
enable_irq(IOMUX_TO_IRQ(PIN_GPIO2));
}
return NULL;
}
/*! mxc_iomux_gpio_isp1301_set
* This function set iomux settings depends on platform and usb mode.
*
* @param otg - otg instance
* @param usb_mode setting usb mode.
*
*/
int mxc_iomux_gpio_isp1301_set (struct otg_instance *otg, int usb_mode)
{
int gpio = 1;
printk (KERN_INFO"MXC gpio setting for isp1301\n");
isp1301_mod_init(otg, &zasevb_isp1301_bh);
TRACE_MSG0(REMOVE_TCD, "5. IOMUX and GPIO Interrupt Configuration");
iomux_config_mux(PIN_GPIO2, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
//Setting interrupt for ISP1301
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
set_irq_type(IOMUX_TO_IRQ(PIN_GPIO2), IRQF_TRIGGER_FALLING);
#else
set_irq_type(IOMUX_TO_IRQ(PIN_GPIO2), IRQT_FALLING);
#endif
gpio = request_irq(IOMUX_TO_IRQ(PIN_GPIO2), zasevb_gpio_int_hndlr,
0, "ISP1301", (void *)&ocd_ops);
THROW_IF(gpio, error);
iomux_config_mux(PIN_USB_XRXD, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_TXENB, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
CATCH(error) {
printk(KERN_INFO"%s: failed\n", __FUNCTION__);
UNLESS (gpio) gpio_free_irq (ZGPIO_PORT, ZGPIO_PIN, GPIO_HIGH_PRIO);
return -EINVAL;
}
return 0;
}
/*! mxc_iomux_gpio_isp1301_reset - clear isp1301 iomux settings
*/
int mxc_iomux_gpio_isp1301_reset (void)
{
free_irq(IOMUX_TO_IRQ(PIN_GPIO2), &ocd_ops);
return 0;
}
#endif //CONFIG_OTG_ZASEVB_ISP1301
#if defined(CONFIG_OTG_ZASEVB_MC13783_CONNECTIVITY) || defined(CONFIG_OTG_ZASEVB_MC13783_PMIC)
/*! mxc_iomux_gpio_mc13783_set - set mc13783 iomux settings
* @param usb_mode
* @return 0
*/
int mxc_iomux_gpio_mc13783_set (int usb_mode)
{
printk (KERN_INFO"MXC gpio setting for Atlas\n");
printk(KERN_INFO"IOMUX setting for Argon+\n");
iomux_config_mux(PIN_USB_XRXD, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_TXENB, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
return 0;
}
/*! mxc_iomux_gpio_mc13783_reset - clear mc13783 iomux settings
*/
int mxc_iomux_gpio_mc13783_reset (void)
{
iomux_config_mux(PIN_USB_XRXD, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPOUT, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VPIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_TXENB, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
iomux_config_mux(PIN_USB_VMIN, OUTPUTCONFIG_FUNC, INPUTCONFIG_FUNC);
return 0;
}
#endif //CONFIG_OTG_ZASEVB_MC13783_CONNECTIVITY
int mxc_host_gpio (void)
{
iomux_config_mux(PIN_GPIO5, OUTPUTCONFIG_ALT1, INPUTCONFIG_ALT1); // USB1_OC
printk(KERN_INFO"%s: NONE/GPIO\n", __FUNCTION__);
return 0;
}
#if defined(CONFIG_OTG_ZASEVB_ISP1301)
OTG_EXPORT_SYMBOL(mxc_iomux_gpio_isp1301_set);
OTG_EXPORT_SYMBOL(mxc_iomux_gpio_isp1301_reset);
#endif
#if defined(CONFIG_OTG_ZASEVB_MC13783_CONNECTIVITY) || defined(CONFIG_OTG_ZASEVB_MC13783_PMIC)
OTG_EXPORT_SYMBOL(mxc_iomux_gpio_mc13783_set);
OTG_EXPORT_SYMBOL(mxc_iomux_gpio_mc13783_reset);
#endif
OTG_EXPORT_SYMBOL(mxc_host_gpio);
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