diff options
Diffstat (limited to 'drivers/otg/hardware/mxc91331-gpio.c')
| -rw-r--r-- | drivers/otg/hardware/mxc91331-gpio.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/otg/hardware/mxc91331-gpio.c b/drivers/otg/hardware/mxc91331-gpio.c new file mode 100644 index 000000000000..3fa472fc059d --- /dev/null +++ b/drivers/otg/hardware/mxc91331-gpio.c @@ -0,0 +1,215 @@ +/* + * 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/mxc91331-gpio.c - Freescale USBOTG ArgonPlus gpio and iomux setting + * @(#) sp/root@belcarra.com/debian-black.(none)|otg/platform/mxc/mxc91331-gpio.c|20070822230929|09899 + * + * 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/mxc91331-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(irq); + zasevb_int_disabled = TRUE; + TRACE_MSG0(REMOVE_TCD, "ZASEVB GPIO INTERRUPT: SCHEDULE WORK"); + 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 0; +} + + + + +/*! + * 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(otg->tcd->TAG, "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; +} + +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_mc1383_set - set mc13783 iomux setting + * @param usb_mode + */ +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); |