diff options
Diffstat (limited to 'arch/arm/mach-mx23/usb_dr.c')
| -rw-r--r-- | arch/arm/mach-mx23/usb_dr.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/arch/arm/mach-mx23/usb_dr.c b/arch/arm/mach-mx23/usb_dr.c new file mode 100644 index 000000000000..4c702ffcd07c --- /dev/null +++ b/arch/arm/mach-mx23/usb_dr.c @@ -0,0 +1,193 @@ +/* + * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <linux/fsl_devices.h> +#include <mach/irqs.h> +#include <mach/mx23.h> +#include "usb.h" +#include "mx23_pins.h" + +#define USB_POWER_ENABLE MXS_PIN_TO_GPIO(PINID_GPMI_CE2N) +#define USB_ID_PIN MXS_PIN_TO_GPIO(PINID_ROTARYA) + +static void usb_host_phy_resume(struct fsl_usb2_platform_data *plat) +{ + fsl_platform_set_usb_phy_dis(plat, 0); +} + +static int usbotg_init_ext(struct platform_device *pdev) +{ + struct clk *usb_clk; + + usb_clk = clk_get(NULL, "usb_clk0"); + clk_enable(usb_clk); + clk_put(usb_clk); + + return usbotg_init(pdev); +} + +/* + * 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_ext, + .platform_uninit = usbotg_uninit, + .phy_mode = FSL_USB2_PHY_UTMI_WIDE, + .power_budget = 500, /* 500 mA max power */ + .platform_resume = usb_host_phy_resume, + .transceiver = "utmi", + .phy_regs = USBPHY_PHYS_ADDR, + .id_gpio = USB_ID_PIN, +}; + +/* + * OTG resources + */ +static struct resource otg_resources[] = { + [0] = { + .start = (u32)USBCTRL_PHYS_ADDR, + .end = (u32)(USBCTRL_PHYS_ADDR + 0x1ff), + .flags = IORESOURCE_MEM, + }, + + [1] = { + .start = IRQ_USB_CTRL, + .flags = IORESOURCE_IRQ, + }, + + [2] = { + .start = IRQ_USB_WAKEUP, + .flags = IORESOURCE_IRQ, + }, +}; + +/* + * UDC resources (same as OTG resource) + */ +static struct resource udc_resources[] = { + [0] = { + .start = (u32)USBCTRL_PHYS_ADDR, + .end = (u32)(USBCTRL_PHYS_ADDR + 0x1ff), + .flags = IORESOURCE_MEM, + }, + + [1] = { + .start = IRQ_USB_CTRL, + .flags = IORESOURCE_IRQ, + }, + + [2] = { + .start = IRQ_USB_WAKEUP, + .flags = IORESOURCE_IRQ, + }, +}; + + +static u64 dr_udc_dmamask = ~(u32) 0; +static void dr_udc_release(struct device *dev) +{ +} + +/* + * platform device structs + * dev.platform_data field plugged at run time + */ +static struct platform_device 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 u64 dr_otg_dmamask = ~(u32) 0; +static void dr_otg_release(struct device *dev) +{} + +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 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(); + + PDATA->change_ahb_burst = 1; + PDATA->ahb_burst_mode = 0; + return 0; +} + +/* utmi_init will be call by otg, host and perperial tree time*/ +void fsl_phy_usb_utmi_init(struct fsl_xcvr_ops *this) +{ +} + +void fsl_phy_usb_utmi_uninit(struct fsl_xcvr_ops *this) +{ +} + +/*! + * set vbus power + * + * @param view viewport register + * @param on power on or off + */ +void fsl_phy_set_power(struct fsl_xcvr_ops *this, + struct fsl_usb2_platform_data *pdata, int on) +{ + int ret; + ret = gpio_request(USB_POWER_ENABLE, "usb_power"); + if (ret) { + pr_err("fail request usb power control pin\n"); + return; + } + gpio_direction_output(USB_POWER_ENABLE, on); + gpio_set_value(USB_POWER_ENABLE, on); + gpio_free(USB_POWER_ENABLE); +} + +#ifdef CONFIG_MXS_VBUS_CURRENT_DRAW + fs_initcall(usb_dr_init); +#else + subsys_initcall(usb_dr_init); +#endif |