Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx> --- drivers/usb/chipidea/Makefile | 2 +- drivers/usb/chipidea/ci13xxx_imx.c | 177 ++++++++++++++++++++++++++++++++++++ 2 files changed, 178 insertions(+), 1 deletions(-) create mode 100644 drivers/usb/chipidea/ci13xxx_imx.c diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile index 0f34c0c..6821385 100644 --- a/drivers/usb/chipidea/Makefile +++ b/drivers/usb/chipidea/Makefile @@ -14,5 +14,5 @@ ifneq ($(CONFIG_ARCH_MSM),) endif ifneq ($(CONFIG_ARCH_MXC),) - obj-$(CONFIG_USB_CHIPIDEA) += phy-imx-utmi.o + obj-$(CONFIG_USB_CHIPIDEA) += phy-imx-utmi.o ci13xxx_imx.o endif diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c new file mode 100644 index 0000000..5f36f07 --- /dev/null +++ b/drivers/usb/chipidea/ci13xxx_imx.c @@ -0,0 +1,177 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * + * 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/platform_device.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/pm_runtime.h> +#include <linux/usb/ulpi.h> +#include <linux/usb/gadget.h> +#include <linux/usb/chipidea.h> +#include <linux/usb/otg.h> +#include <linux/dma-mapping.h> + +#include "ci.h" + +#define pdev_to_phy(pdev) \ + ((struct usb_phy *)platform_get_drvdata(pdev)) + +static void ci13xxx_imx_notify_event(struct ci13xxx *udc, unsigned event) +{ +#if 0 + struct device *dev = udc->gadget.dev.parent; + int val; + + switch (event) { + case CI13XXX_CONTROLLER_RESET_EVENT: + dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n"); + writel(0, USB_AHBBURST); + writel(0, USB_AHBMODE); + break; + case CI13XXX_CONTROLLER_STOPPED_EVENT: + dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n"); + /* + * Put the transceiver in non-driving mode. Otherwise host + * may not detect soft-disconnection. + */ + val = usb_phy_io_read(udc->transceiver, ULPI_FUNC_CTRL); + val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; + val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; + usb_phy_io_write(udc->transceiver, val, ULPI_FUNC_CTRL); + break; + default: + dev_dbg(dev, "unknown ci13xxx_udc event\n"); + break; + } +#endif +} + +static struct ci13xxx_udc_driver ci13xxx_imx_udc_driver = { + .name = "ci13xxx_imx", + .flags = CI13XXX_REGS_SHARED | + CI13XXX_PULLUP_ON_VBUS | + CI13XXX_DISABLE_STREAMING, + .capoffset = 0x100, + + .notify_event = ci13xxx_imx_notify_event, +}; + +static int ci13xxx_imx_probe(struct platform_device *pdev) +{ + struct platform_device *plat_ci, *phy_pdev; + struct device_node *phy_np; + struct resource *res; + int hub_reset, vbus_pwr; + int ret; + + dev_dbg(&pdev->dev, "ci13xxx_imx_probe\n"); + + phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0); + if (phy_np) { + phy_pdev = of_find_device_by_node(phy_np); + if (phy_pdev) { + struct usb_phy *phy; + phy = pdev_to_phy(phy_pdev); + if (phy) + usb_phy_init(phy); + } + of_node_put(phy_np); + } + + hub_reset = of_get_named_gpio(pdev->dev.of_node, "fsl,hub-reset", 0); + if (hub_reset > 0 && + devm_gpio_request(&pdev->dev, hub_reset, "hub-reset")) { + gpio_direction_output(hub_reset, 0); + udelay(10); + gpio_direction_output(hub_reset, 1); + } + + /* we only support host now, so enable vbus here */ + vbus_pwr = of_get_named_gpio(pdev->dev.of_node, "fsl,vbus-power", 0); + if (vbus_pwr > 0 && + devm_gpio_request(&pdev->dev, vbus_pwr, "vbus-pwr")) { + gpio_direction_output(vbus_pwr, 1); + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "can't get device resources\n"); + return -ENOENT; + } + + plat_ci = platform_device_alloc("ci_hdrc", (int)res->start); + if (!plat_ci) { + dev_err(&pdev->dev, "can't allocate ci_hdrc platform device\n"); + return -ENOMEM; + } + + ret = platform_device_add_resources(plat_ci, pdev->resource, + pdev->num_resources); + if (ret) { + dev_err(&pdev->dev, "can't add resources to platform device\n"); + goto put_platform; + } + + ret = platform_device_add_data(plat_ci, &ci13xxx_imx_udc_driver, + sizeof(ci13xxx_imx_udc_driver)); + if (ret) + goto put_platform; + + plat_ci->dev.dma_mask = + kmalloc(sizeof(*pdev->dev.dma_mask), GFP_KERNEL); + if (!plat_ci->dev.dma_mask) { + ret = -ENOMEM; + goto put_platform; + } + *plat_ci->dev.dma_mask = DMA_BIT_MASK(32); + plat_ci->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + ret = platform_device_add(plat_ci); + if (ret) + goto free_dma_mask; + + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +free_dma_mask: + kfree(plat_ci->dev.dma_mask); + plat_ci->dev.dma_mask = NULL; +put_platform: + platform_device_put(plat_ci); + + return ret; +} + +static const struct of_device_id ci13xxx_imx_dt_ids[] = { + { .compatible = "fsl,imx6q-usboh3", }, + { /* sentinel */ } +}; + +static struct platform_driver ci13xxx_imx_driver = { + .probe = ci13xxx_imx_probe, + .driver = { + .name = "imx_usboh3", + .of_match_table = ci13xxx_imx_dt_ids, + }, +}; + +MODULE_ALIAS("platform:imx_usboh3"); + +static int __init ci13xxx_imx_init(void) +{ + return platform_driver_register(&ci13xxx_imx_driver); +} +module_init(ci13xxx_imx_init); + +MODULE_LICENSE("GPL v2"); -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
