diff options
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/usb/chipidea/Makefile | 4 | ||||
| -rw-r--r-- | drivers/usb/chipidea/ci.h | 1 | ||||
| -rw-r--r-- | drivers/usb/chipidea/ci13xxx_imx.c | 71 | ||||
| -rw-r--r-- | drivers/usb/chipidea/ci13xxx_imx.h | 28 | ||||
| -rw-r--r-- | drivers/usb/chipidea/core.c | 24 | ||||
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 39 | ||||
| -rw-r--r-- | drivers/usb/chipidea/usbmisc_imx6q.c | 162 |
8 files changed, 318 insertions, 12 deletions
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index 47e499c9c0b6..1ea932a13685 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -13,7 +13,6 @@ if USB_CHIPIDEA config USB_CHIPIDEA_UDC bool "ChipIdea device controller" depends on USB_GADGET=y || USB_GADGET=USB_CHIPIDEA - select USB_GADGET_DUALSPEED help Say Y here to enable device controller functionality of the ChipIdea driver. diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile index 5c66d9c330ca..d92ca325b104 100644 --- a/drivers/usb/chipidea/Makefile +++ b/drivers/usb/chipidea/Makefile @@ -1,3 +1,5 @@ +ccflags-$(CONFIG_USB_CHIPIDEA_DEBUG) := -DDEBUG + obj-$(CONFIG_USB_CHIPIDEA) += ci_hdrc.o ci_hdrc-y := core.o @@ -15,5 +17,5 @@ ifneq ($(CONFIG_PCI),) endif ifneq ($(CONFIG_OF_DEVICE),) - obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o + obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o usbmisc_imx6q.o endif diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index d738603a2757..e25d1263da13 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -139,6 +139,7 @@ struct ci13xxx { enum ci_role role; bool is_otg; struct work_struct work; + struct work_struct vbus_work; struct workqueue_struct *wq; struct dma_pool *qh_pool; diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c index ef60d06835d0..0f5ca4bea17f 100644 --- a/drivers/usb/chipidea/ci13xxx_imx.c +++ b/drivers/usb/chipidea/ci13xxx_imx.c @@ -20,8 +20,10 @@ #include <linux/usb/chipidea.h> #include <linux/clk.h> #include <linux/regulator/consumer.h> +#include <linux/pinctrl/consumer.h> #include "ci.h" +#include "ci13xxx_imx.h" #define pdev_to_phy(pdev) \ ((struct usb_phy *)platform_get_drvdata(pdev)) @@ -34,6 +36,55 @@ struct ci13xxx_imx_data { struct regulator *reg_vbus; }; +static const struct usbmisc_ops *usbmisc_ops; + +/* Common functions shared by usbmisc drivers */ + +int usbmisc_set_ops(const struct usbmisc_ops *ops) +{ + if (usbmisc_ops) + return -EBUSY; + + usbmisc_ops = ops; + + return 0; +} +EXPORT_SYMBOL_GPL(usbmisc_set_ops); + +void usbmisc_unset_ops(const struct usbmisc_ops *ops) +{ + usbmisc_ops = NULL; +} +EXPORT_SYMBOL_GPL(usbmisc_unset_ops); + +int usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev) +{ + struct device_node *np = dev->of_node; + struct of_phandle_args args; + int ret; + + usbdev->dev = dev; + + ret = of_parse_phandle_with_args(np, "fsl,usbmisc", "#index-cells", + 0, &args); + if (ret) { + dev_err(dev, "Failed to parse property fsl,usbmisc, errno %d\n", + ret); + memset(usbdev, 0, sizeof(*usbdev)); + return ret; + } + usbdev->index = args.args[0]; + of_node_put(args.np); + + if (of_find_property(np, "disable-over-current", NULL)) + usbdev->disable_oc = 1; + + return 0; +} +EXPORT_SYMBOL_GPL(usbmisc_get_init_data); + +/* End of common functions shared by usbmisc drivers*/ + static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata = { .name = "ci13xxx_imx", .flags = CI13XXX_REQUIRE_TRANSCEIVER | @@ -49,8 +100,13 @@ static int __devinit ci13xxx_imx_probe(struct platform_device *pdev) struct device_node *phy_np; struct resource *res; struct regulator *reg_vbus; + struct pinctrl *pinctrl; int ret; + if (of_find_property(pdev->dev.of_node, "fsl,usbmisc", NULL) + && !usbmisc_ops) + return -EPROBE_DEFER; + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) { dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n"); @@ -63,6 +119,11 @@ static int __devinit ci13xxx_imx_probe(struct platform_device *pdev) return -ENOENT; } + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) + dev_warn(&pdev->dev, "pinctrl get/select failed, err=%ld\n", + PTR_ERR(pinctrl)); + data->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(data->clk)) { dev_err(&pdev->dev, @@ -120,6 +181,16 @@ static int __devinit ci13xxx_imx_probe(struct platform_device *pdev) *pdev->dev.dma_mask = DMA_BIT_MASK(32); dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask); } + + if (usbmisc_ops && usbmisc_ops->init) { + ret = usbmisc_ops->init(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, + "usbmisc init failed, ret=%d\n", ret); + goto err; + } + } + plat_ci = ci13xxx_add_device(&pdev->dev, pdev->resource, pdev->num_resources, &ci13xxx_imx_platdata); diff --git a/drivers/usb/chipidea/ci13xxx_imx.h b/drivers/usb/chipidea/ci13xxx_imx.h new file mode 100644 index 000000000000..2e88accb3d67 --- /dev/null +++ b/drivers/usb/chipidea/ci13xxx_imx.h @@ -0,0 +1,28 @@ +/* + * 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 + */ + +/* Used to set SoC specific callbacks */ +struct usbmisc_ops { + /* It's called once when probe a usb device */ + int (*init)(struct device *dev); +}; + +struct usbmisc_usb_device { + struct device *dev; /* usb controller device */ + int index; + + int disable_oc:1; /* over current detect disabled */ +}; + +int usbmisc_set_ops(const struct usbmisc_ops *ops); +void usbmisc_unset_ops(const struct usbmisc_ops *ops); +int +usbmisc_get_init_data(struct device *dev, struct usbmisc_usb_device *usbdev); diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 1083585fad00..f69d029b4607 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -273,14 +273,13 @@ static void ci_role_work(struct work_struct *work) struct ci13xxx *ci = container_of(work, struct ci13xxx, work); enum ci_role role = ci_otg_role(ci); - hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS); - if (role != ci->role) { dev_dbg(ci->dev, "switching from %s to %s\n", ci_role(ci)->name, ci->roles[role]->name); ci_role_stop(ci); ci_role_start(ci, role); + enable_irq(ci->irq); } } @@ -320,17 +319,22 @@ static irqreturn_t ci_irq(int irq, void *data) { struct ci13xxx *ci = data; irqreturn_t ret = IRQ_NONE; + u32 otgsc = 0; + + if (ci->is_otg) + otgsc = hw_read(ci, OP_OTGSC, ~0); - if (ci->is_otg) { - u32 sts = hw_read(ci, OP_OTGSC, ~0); + if (ci->role != CI_ROLE_END) + ret = ci_role(ci)->irq(ci); - if (sts & OTGSC_IDIS) { - queue_work(ci->wq, &ci->work); - ret = IRQ_HANDLED; - } + if (ci->is_otg && (otgsc & OTGSC_IDIS)) { + hw_write(ci, OP_OTGSC, OTGSC_IDIS, OTGSC_IDIS); + disable_irq_nosync(ci->irq); + queue_work(ci->wq, &ci->work); + ret = IRQ_HANDLED; } - return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci); + return ret; } static DEFINE_IDA(ci_ida); @@ -462,6 +466,8 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev) if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) { ci->is_otg = true; + /* ID pin needs 1ms debouce time, we delay 2ms for safe */ + mdelay(2); ci->role = ci_otg_role(ci); } else { ci->role = ci->roles[CI_ROLE_HOST] diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index d214448b677e..2f45bba8561d 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -305,6 +305,18 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *ci) return reg; } +static void hw_enable_vbus_intr(struct ci13xxx *ci) +{ + hw_write(ci, OP_OTGSC, OTGSC_AVVIS, OTGSC_AVVIS); + hw_write(ci, OP_OTGSC, OTGSC_AVVIE, OTGSC_AVVIE); + queue_work(ci->wq, &ci->vbus_work); +} + +static void hw_disable_vbus_intr(struct ci13xxx *ci) +{ + hw_write(ci, OP_OTGSC, OTGSC_AVVIE, 0); +} + /** * hw_test_and_clear_setup_guard: test & clear setup guard (execute without * interruption) @@ -371,6 +383,16 @@ static int hw_usb_reset(struct ci13xxx *ci) return 0; } +static void vbus_work(struct work_struct *work) +{ + struct ci13xxx *ci = container_of(work, struct ci13xxx, vbus_work); + + if (hw_read(ci, OP_OTGSC, OTGSC_AVV)) + usb_gadget_vbus_connect(&ci->gadget); + else + usb_gadget_vbus_disconnect(&ci->gadget); +} + /****************************************************************************** * UTIL block *****************************************************************************/ @@ -1370,6 +1392,7 @@ static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) if (is_active) { pm_runtime_get_sync(&_gadget->dev); hw_device_reset(ci, USBMODE_CM_DC); + hw_enable_vbus_intr(ci); hw_device_state(ci, ci->ep0out->qh.dma); } else { hw_device_state(ci, 0); @@ -1544,8 +1567,10 @@ static int ci13xxx_start(struct usb_gadget *gadget, pm_runtime_get_sync(&ci->gadget.dev); if (ci->platdata->flags & CI13XXX_PULLUP_ON_VBUS) { if (ci->vbus_active) { - if (ci->platdata->flags & CI13XXX_REGS_SHARED) + if (ci->platdata->flags & CI13XXX_REGS_SHARED) { hw_device_reset(ci, USBMODE_CM_DC); + hw_enable_vbus_intr(ci); + } } else { pm_runtime_put_sync(&ci->gadget.dev); goto done; @@ -1651,6 +1676,13 @@ static irqreturn_t udc_irq(struct ci13xxx *ci) } else { retval = IRQ_NONE; } + + intr = hw_read(ci, OP_OTGSC, ~0); + hw_write(ci, OP_OTGSC, ~0, intr); + + if (intr & (OTGSC_AVVIE & OTGSC_AVVIS)) + queue_work(ci->wq, &ci->vbus_work); + spin_unlock(&ci->lock); return retval; @@ -1726,6 +1758,7 @@ static int udc_start(struct ci13xxx *ci) retval = hw_device_reset(ci, USBMODE_CM_DC); if (retval) goto put_transceiver; + hw_enable_vbus_intr(ci); } retval = device_register(&ci->gadget.dev); @@ -1788,6 +1821,9 @@ static void udc_stop(struct ci13xxx *ci) if (ci == NULL) return; + hw_disable_vbus_intr(ci); + cancel_work_sync(&ci->vbus_work); + usb_del_gadget_udc(&ci->gadget); destroy_eps(ci); @@ -1828,6 +1864,7 @@ int ci_hdrc_gadget_init(struct ci13xxx *ci) rdrv->irq = udc_irq; rdrv->name = "gadget"; ci->roles[CI_ROLE_GADGET] = rdrv; + INIT_WORK(&ci->vbus_work, vbus_work); return 0; } diff --git a/drivers/usb/chipidea/usbmisc_imx6q.c b/drivers/usb/chipidea/usbmisc_imx6q.c new file mode 100644 index 000000000000..416e3fc58fd0 --- /dev/null +++ b/drivers/usb/chipidea/usbmisc_imx6q.c @@ -0,0 +1,162 @@ +/* + * 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/of_platform.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> + +#include "ci13xxx_imx.h" + +#define USB_DEV_MAX 4 + +#define BM_OVER_CUR_DIS BIT(7) + +struct imx6q_usbmisc { + void __iomem *base; + spinlock_t lock; + struct clk *clk; + struct usbmisc_usb_device usbdev[USB_DEV_MAX]; +}; + +static struct imx6q_usbmisc *usbmisc; + +static struct usbmisc_usb_device *get_usbdev(struct device *dev) +{ + int i, ret; + + for (i = 0; i < USB_DEV_MAX; i++) { + if (usbmisc->usbdev[i].dev == dev) + return &usbmisc->usbdev[i]; + else if (!usbmisc->usbdev[i].dev) + break; + } + + if (i >= USB_DEV_MAX) + return ERR_PTR(-EBUSY); + + ret = usbmisc_get_init_data(dev, &usbmisc->usbdev[i]); + if (ret) + return ERR_PTR(ret); + + return &usbmisc->usbdev[i]; +} + +static int usbmisc_imx6q_init(struct device *dev) +{ + + struct usbmisc_usb_device *usbdev; + unsigned long flags; + u32 reg; + + usbdev = get_usbdev(dev); + if (IS_ERR(usbdev)) + return PTR_ERR(usbdev); + + if (usbdev->disable_oc) { + spin_lock_irqsave(&usbmisc->lock, flags); + reg = readl(usbmisc->base + usbdev->index * 4); + writel(reg | BM_OVER_CUR_DIS, + usbmisc->base + usbdev->index * 4); + spin_unlock_irqrestore(&usbmisc->lock, flags); + } + + return 0; +} + +static const struct usbmisc_ops imx6q_usbmisc_ops = { + .init = usbmisc_imx6q_init, +}; + +static const struct of_device_id usbmisc_imx6q_dt_ids[] = { + { .compatible = "fsl,imx6q-usbmisc"}, + { /* sentinel */ } +}; + +static int __devinit usbmisc_imx6q_probe(struct platform_device *pdev) +{ + struct resource *res; + struct imx6q_usbmisc *data; + int ret; + + if (usbmisc) + return -EBUSY; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + spin_lock_init(&data->lock); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->base = devm_request_and_ioremap(&pdev->dev, res); + if (!data->base) + return -EADDRNOTAVAIL; + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->clk)) { + dev_err(&pdev->dev, + "failed to get clock, err=%ld\n", PTR_ERR(data->clk)); + return PTR_ERR(data->clk); + } + + ret = clk_prepare_enable(data->clk); + if (ret) { + dev_err(&pdev->dev, + "clk_prepare_enable failed, err=%d\n", ret); + return ret; + } + + ret = usbmisc_set_ops(&imx6q_usbmisc_ops); + if (ret) { + clk_disable_unprepare(data->clk); + return ret; + } + + usbmisc = data; + + return 0; +} + +static int __devexit usbmisc_imx6q_remove(struct platform_device *pdev) +{ + usbmisc_unset_ops(&imx6q_usbmisc_ops); + clk_disable_unprepare(usbmisc->clk); + return 0; +} + +static struct platform_driver usbmisc_imx6q_driver = { + .probe = usbmisc_imx6q_probe, + .remove = __devexit_p(usbmisc_imx6q_remove), + .driver = { + .name = "usbmisc_imx6q", + .owner = THIS_MODULE, + .of_match_table = usbmisc_imx6q_dt_ids, + }, +}; + +int __init usbmisc_imx6q_drv_init(void) +{ + return platform_driver_register(&usbmisc_imx6q_driver); +} +subsys_initcall(usbmisc_imx6q_drv_init); + +void __exit usbmisc_imx6q_drv_exit(void) +{ + platform_driver_unregister(&usbmisc_imx6q_driver); +} +module_exit(usbmisc_imx6q_drv_exit); + +MODULE_ALIAS("platform:usbmisc-imx6q"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("driver for imx6q usb non-core registers"); +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |