diff options
Diffstat (limited to 'arch/arm/plat-mxc/utmixc.c')
-rw-r--r-- | arch/arm/plat-mxc/utmixc.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/utmixc.c b/arch/arm/plat-mxc/utmixc.c new file mode 100644 index 000000000000..59207ab9ff67 --- /dev/null +++ b/arch/arm/plat-mxc/utmixc.c @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2005-2010 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 + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <linux/usb/fsl_xcvr.h> +#include <linux/pmic_external.h> + +#include <mach/hardware.h> +#include <mach/arc_otg.h> +#include <asm/mach-types.h> + +static struct regulator *usbotg_regux; + +static void usb_utmi_init(struct fsl_xcvr_ops *this) +{ +#if defined(CONFIG_MXC_PMIC_MC13892_MODULE) || defined(CONFIG_MXC_PMIC_MC13892) + if (machine_is_mx51_3ds()) { + unsigned int value; + + /* VUSBIN */ + pmic_read_reg(REG_USB1, &value, 0xffffff); + value |= 0x1; + value |= (0x1 << 3); + pmic_write_reg(REG_USB1, value, 0xffffff); + } +#endif +} + +static void usb_utmi_uninit(struct fsl_xcvr_ops *this) +{ +} + +/*! + * set vbus power + * + * @param view viewport register + * @param on power on or off + */ +static void set_power(struct fsl_xcvr_ops *this, + struct fsl_usb2_platform_data *pdata, int on) +{ + struct device *dev = &pdata->pdev->dev; + + pr_debug("real %s(on=%d) pdata=0x%p\n", __func__, on, pdata); + if (machine_is_mx37_3ds()) { + if (on) { + if (!board_is_rev(BOARD_REV_2)) + usbotg_regux = regulator_get(dev, "DCDC2"); + else + usbotg_regux = regulator_get(dev, "SWBST"); + + regulator_enable(usbotg_regux); + } else { + regulator_disable(usbotg_regux); + regulator_put(usbotg_regux); + } + } + if (pdata && pdata->platform_driver_vbus) + pdata->platform_driver_vbus(on); +} + +static struct fsl_xcvr_ops utmi_ops = { + .name = "utmi", + .xcvr_type = PORTSC_PTS_UTMI, + .init = usb_utmi_init, + .uninit = usb_utmi_uninit, + .set_vbus_power = set_power, +}; + +extern void fsl_usb_xcvr_register(struct fsl_xcvr_ops *xcvr_ops); + +static int __init utmixc_init(void) +{ + fsl_usb_xcvr_register(&utmi_ops); + return 0; +} + +extern void fsl_usb_xcvr_unregister(struct fsl_xcvr_ops *xcvr_ops); + +static void __exit utmixc_exit(void) +{ + fsl_usb_xcvr_unregister(&utmi_ops); +} + +subsys_initcall(utmixc_init); +module_exit(utmixc_exit); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("utmi xcvr driver"); +MODULE_LICENSE("GPL"); |