diff options
Diffstat (limited to 'patches.tizen/0882-drivers-s3c-hsotg-add-proper-suspend-resume-support.patch')
| -rw-r--r-- | patches.tizen/0882-drivers-s3c-hsotg-add-proper-suspend-resume-support.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/patches.tizen/0882-drivers-s3c-hsotg-add-proper-suspend-resume-support.patch b/patches.tizen/0882-drivers-s3c-hsotg-add-proper-suspend-resume-support.patch new file mode 100644 index 00000000000..f93cafdfcb7 --- /dev/null +++ b/patches.tizen/0882-drivers-s3c-hsotg-add-proper-suspend-resume-support.patch @@ -0,0 +1,77 @@ +From 0731988585aff6355bad682f32bc3f4ecca08c84 Mon Sep 17 00:00:00 2001 +From: Marek Szyprowski <m.szyprowski@samsung.com> +Date: Tue, 22 Oct 2013 14:42:14 +0200 +Subject: [PATCH 0882/1302] drivers: s3c-hsotg: add proper suspend/resume + support + +Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + drivers/usb/gadget/s3c-hsotg.c | 51 ++++++++++++++++++++++++++++++++++++++---- + 1 file changed, 47 insertions(+), 4 deletions(-) + +diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c +index 25008c0..55c6f92 100644 +--- a/drivers/usb/gadget/s3c-hsotg.c ++++ b/drivers/usb/gadget/s3c-hsotg.c +@@ -3677,10 +3677,53 @@ static int s3c_hsotg_remove(struct platform_device *pdev) + return 0; + } + +-#if 1 +-#define s3c_hsotg_suspend NULL +-#define s3c_hsotg_resume NULL +-#endif ++static int s3c_hsotg_suspend(struct platform_device *pdev, pm_message_t state) ++{ ++ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); ++ unsigned long flags; ++ int ret = 0; ++ ++ if (hsotg->driver) ++ dev_info(hsotg->dev, "suspending usb gadget %s\n", hsotg->driver->driver.name); ++ ++ spin_lock_irqsave(&hsotg->lock, flags); ++ s3c_hsotg_disconnect(hsotg); ++ s3c_hsotg_phy_disable(hsotg); ++ hsotg->gadget.speed = USB_SPEED_UNKNOWN; ++ spin_unlock_irqrestore(&hsotg->lock, flags); ++ ++ if (hsotg->driver) { ++ int ep; ++ for (ep = 0; ep < hsotg->num_of_eps; ep++) ++ s3c_hsotg_ep_disable(&hsotg->eps[ep].ep); ++ ++ ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); ++ } ++ ++ return ret; ++} ++ ++static int s3c_hsotg_resume(struct platform_device *pdev) ++{ ++ struct s3c_hsotg *hsotg = platform_get_drvdata(pdev); ++ unsigned long flags; ++ int ret = 0; ++ ++ if (hsotg->driver) ++ dev_info(hsotg->dev, "resuming usb gadget %s\n", hsotg->driver->driver.name); ++ ++ spin_lock_irqsave(&hsotg->lock, flags); ++ hsotg->last_rst = jiffies; ++ s3c_hsotg_phy_enable(hsotg); ++ s3c_hsotg_core_init(hsotg); ++ spin_unlock_irqrestore(&hsotg->lock, flags); ++ ++ if (hsotg->driver) ++ ret = regulator_bulk_enable(ARRAY_SIZE(hsotg->supplies), ++ hsotg->supplies); ++ ++ return ret; ++} + + static const struct of_device_id s3c_hsotg_of_ids[] = { + { .compatible = "samsung,s3c-hsotg", }, +-- +1.8.3.2 + |