diff options
Diffstat (limited to 'drivers/usb/musb/musb_core.c')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 76 |
1 files changed, 43 insertions, 33 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 07cf394e491b..a914010d9d12 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -128,12 +128,7 @@ MODULE_ALIAS("platform:" MUSB_DRIVER_NAME); static inline struct musb *dev_to_musb(struct device *dev) { -#ifdef CONFIG_USB_MUSB_HDRC_HCD - /* usbcore insists dev->driver_data is a "struct hcd *" */ - return hcd_to_musb(dev_get_drvdata(dev)); -#else return dev_get_drvdata(dev); -#endif } /*-------------------------------------------------------------------------*/ @@ -1869,6 +1864,7 @@ allocate_instance(struct device *dev, INIT_LIST_HEAD(&musb->out_bulk); hcd->uses_new_polling = 1; + hcd->has_tt = 1; musb->vbuserr_retry = VBUSERR_RETRY_COUNT; musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON; @@ -1876,10 +1872,9 @@ allocate_instance(struct device *dev, musb = kzalloc(sizeof *musb, GFP_KERNEL); if (!musb) return NULL; - dev_set_drvdata(dev, musb); #endif - + dev_set_drvdata(dev, musb); musb->mregs = mbase; musb->ctrl_base = mbase; musb->nIrq = -ENODEV; @@ -1955,31 +1950,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) goto fail0; } - switch (plat->mode) { - case MUSB_HOST: -#ifdef CONFIG_USB_MUSB_HDRC_HCD - break; -#else - goto bad_config; -#endif - case MUSB_PERIPHERAL: -#ifdef CONFIG_USB_GADGET_MUSB_HDRC - break; -#else - goto bad_config; -#endif - case MUSB_OTG: -#ifdef CONFIG_USB_MUSB_OTG - break; -#else -bad_config: -#endif - default: - dev_err(dev, "incompatible Kconfig role setting\n"); - status = -EINVAL; - goto fail0; - } - /* allocate */ musb = allocate_instance(dev, plat->config, ctrl); if (!musb) { @@ -1987,6 +1957,10 @@ bad_config: goto fail0; } + pm_runtime_use_autosuspend(musb->controller); + pm_runtime_set_autosuspend_delay(musb->controller, 200); + pm_runtime_enable(musb->controller); + spin_lock_init(&musb->lock); musb->board_mode = plat->mode; musb->board_set_power = plat->set_power; @@ -2122,6 +2096,8 @@ bad_config: if (status < 0) goto fail3; + pm_runtime_put(musb->controller); + status = musb_init_debugfs(musb); if (status < 0) goto fail4; @@ -2191,7 +2167,7 @@ static int __init musb_probe(struct platform_device *pdev) void __iomem *base; iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!iomem || irq == 0) + if (!iomem || irq <= 0) return -ENODEV; base = ioremap(iomem->start, resource_size(iomem)); @@ -2221,9 +2197,11 @@ static int __exit musb_remove(struct platform_device *pdev) * - Peripheral mode: peripheral is deactivated (or never-activated) * - OTG mode: both roles are deactivated (or never-activated) */ + pm_runtime_get_sync(musb->controller); musb_exit_debugfs(musb); musb_shutdown(pdev); + pm_runtime_put(musb->controller); musb_free(musb); iounmap(ctrl_base); device_init_wakeup(&pdev->dev, 0); @@ -2409,9 +2387,41 @@ static int musb_resume_noirq(struct device *dev) return 0; } +static int musb_runtime_suspend(struct device *dev) +{ + struct musb *musb = dev_to_musb(dev); + + musb_save_context(musb); + + return 0; +} + +static int musb_runtime_resume(struct device *dev) +{ + struct musb *musb = dev_to_musb(dev); + static int first = 1; + + /* + * When pm_runtime_get_sync called for the first time in driver + * init, some of the structure is still not initialized which is + * used in restore function. But clock needs to be + * enabled before any register access, so + * pm_runtime_get_sync has to be called. + * Also context restore without save does not make + * any sense + */ + if (!first) + musb_restore_context(musb); + first = 0; + + return 0; +} + static const struct dev_pm_ops musb_dev_pm_ops = { .suspend = musb_suspend, .resume_noirq = musb_resume_noirq, + .runtime_suspend = musb_runtime_suspend, + .runtime_resume = musb_runtime_resume, }; #define MUSB_DEV_PM_OPS (&musb_dev_pm_ops) |