diff options
Diffstat (limited to 'arch/arm/mach-mx25/usb_dr.c')
-rw-r--r-- | arch/arm/mach-mx25/usb_dr.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/arch/arm/mach-mx25/usb_dr.c b/arch/arm/mach-mx25/usb_dr.c new file mode 100644 index 000000000000..9dd6c8f54911 --- /dev/null +++ b/arch/arm/mach-mx25/usb_dr.c @@ -0,0 +1,138 @@ +/* + * 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/kernel.h> +#include <linux/types.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <mach/hardware.h> +#include <mach/arc_otg.h> +#include "usb.h" + +static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable); + +/* + * platform data structs + * - Which one to use is determined by CONFIG options in usb.h + * - operating_mode plugged at run time + */ +static struct fsl_usb2_platform_data __maybe_unused dr_utmi_config = { + .name = "DR", + .platform_init = usbotg_init, + .platform_uninit = usbotg_uninit, + .phy_mode = FSL_USB2_PHY_UTMI_WIDE, + .power_budget = 500, /* via RT9706 */ + .gpio_usb_active = gpio_usbotg_utmi_active, + .gpio_usb_inactive = gpio_usbotg_utmi_inactive, + .transceiver = "utmi", + .wake_up_enable = _wake_up_enable, +}; + +/* + * OTG resources + */ +static struct resource otg_resources[] = { + [0] = { + .start = (u32)(USB_OTGREGS_BASE), + .end = (u32)(USB_OTGREGS_BASE + 0x1ff), + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = MX25_INT_USB_OTG, + .flags = IORESOURCE_IRQ, + }, +}; + +/* + * UDC resources (same as OTG resource) + */ +static struct resource udc_resources[] = { + [0] = { + .start = (u32)(USB_OTGREGS_BASE), + .end = (u32)(USB_OTGREGS_BASE + 0x1ff), + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = MXC_INT_USB_OTG, + .flags = IORESOURCE_IRQ, + }, +}; + + +static u64 dr_udc_dmamask = ~(u32) 0; +static void dr_udc_release(struct device *dev) +{ +} + +static u64 dr_otg_dmamask = ~(u32) 0; +static void dr_otg_release(struct device *dev) +{ +} + +/* + * platform device structs + * dev.platform_data field plugged at run time + */ +static struct platform_device __maybe_unused dr_udc_device = { + .name = "fsl-usb2-udc", + .id = -1, + .dev = { + .release = dr_udc_release, + .dma_mask = &dr_udc_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .resource = udc_resources, + .num_resources = ARRAY_SIZE(udc_resources), +}; + +static struct platform_device __maybe_unused dr_otg_device = { + .name = "fsl-usb2-otg", + .id = -1, + .dev = { + .release = dr_otg_release, + .dma_mask = &dr_otg_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .resource = otg_resources, + .num_resources = ARRAY_SIZE(otg_resources), +}; + +static void _wake_up_enable(struct fsl_usb2_platform_data *pdata, bool enable) +{ + if (get_usb_mode(pdata) == FSL_USB_DR_DEVICE) { + if (enable) + USBCTRL |= (UCTRL_OWIE | UCTRL_VBUS_WKUP_EN); + else { + USBCTRL &= ~UCTRL_OWIE; + USBCTRL &= ~UCTRL_VBUS_WKUP_EN; + } + } else { + if (enable) + USBCTRL |= UCTRL_OWIE; + else + USBCTRL &= ~UCTRL_OWIE; + } +} + +static int __init usb_dr_init(void) +{ + pr_debug("%s: \n", __func__); + + dr_register_otg(); + dr_register_host(otg_resources, ARRAY_SIZE(otg_resources)); + dr_register_udc(); + + return 0; +} + +module_init(usb_dr_init); |