Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751525Ab3JZJlf (ORCPT ); Sat, 26 Oct 2013 05:41:35 -0400 Received: from mail-bk0-f44.google.com ([209.85.214.44]:44519 "EHLO mail-bk0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751305Ab3JZJlc (ORCPT ); Sat, 26 Oct 2013 05:41:32 -0400 MIME-Version: 1.0 In-Reply-To: <1382710529-12082-5-git-send-email-k.debski@samsung.com> References: <1382710529-12082-1-git-send-email-k.debski@samsung.com> <1382710529-12082-5-git-send-email-k.debski@samsung.com> Date: Sat, 26 Oct 2013 15:11:29 +0530 Message-ID: Subject: Re: [PATCH 4/5] usb: ehci-s5p: Change to use phy provided by the generic phy framework From: Vivek Gautam To: Kamil Debski Cc: "linux-kernel@vger.kernel.org" , "linux-samsung-soc@vger.kernel.org" , Linux USB Mailing List , "devicetree@vger.kernel.org" , linux-arm@vger.kernel.org, Kyungmin Park , kishon , Tomasz Figa , Sylwester Nawrocki , Marek Szyprowski , Vivek Gautam , mat.krawczuk@gmail.com Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5174 Lines: 154 Hi Kamil, On Fri, Oct 25, 2013 at 7:45 PM, Kamil Debski wrote: > Change the phy provider used from the old usb phy specific to a new one > using the generic phy framework. > > Signed-off-by: Kamil Debski > Signed-off-by: Kyungmin Park > --- > drivers/usb/host/ehci-s5p.c | 21 +++++++++++---------- > 1 file changed, 11 insertions(+), 10 deletions(-) > > diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c > index 7cc26e6..76606ff 100644 > --- a/drivers/usb/host/ehci-s5p.c > +++ b/drivers/usb/host/ehci-s5p.c > @@ -19,6 +19,7 @@ > #include > #include > #include > +#include > #include > #include > #include > @@ -45,7 +46,7 @@ static struct hc_driver __read_mostly s5p_ehci_hc_driver; > > struct s5p_ehci_hcd { > struct clk *clk; > - struct usb_phy *phy; > + struct phy *phy; > struct usb_otg *otg; > struct s5p_ehci_platdata *pdata; > }; > @@ -77,10 +78,11 @@ static int s5p_ehci_probe(struct platform_device *pdev) > { > struct s5p_ehci_platdata *pdata = pdev->dev.platform_data; > struct s5p_ehci_hcd *s5p_ehci; > + struct phy *phy; just a nit here: Lets keep the pointer to 'phy' and 'phy_name' together ? and move this above phy_name ? > struct usb_hcd *hcd; > struct ehci_hcd *ehci; > struct resource *res; > - struct usb_phy *phy; > + const char *phy_name; > int irq; > int err; > > @@ -103,14 +105,14 @@ static int s5p_ehci_probe(struct platform_device *pdev) > return -ENOMEM; > } > s5p_ehci = to_s5p_ehci(hcd); > - > + phy_name = of_get_property(pdev->dev.of_node, "phy-names", NULL); > + phy = devm_phy_get(&pdev->dev, phy_name); Below check for exynos5440 was supposed to skip any request phy. So shouldn't we place above two assignments to the original place where devm_usb_get_phy() was called ? May be i am not getting you intention of changing the place. > if (of_device_is_compatible(pdev->dev.of_node, > "samsung,exynos5440-ehci")) { > s5p_ehci->pdata = &empty_platdata; > goto skip_phy; > } > > - phy = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2); > if (IS_ERR(phy)) { > /* Fallback to pdata */ > if (!pdata) { > @@ -122,7 +124,6 @@ static int s5p_ehci_probe(struct platform_device *pdev) > } > } else { > s5p_ehci->phy = phy; > - s5p_ehci->otg = phy->otg; > } > > skip_phy: > @@ -166,7 +167,7 @@ skip_phy: > s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self); Lets remove this line and similar calls to 'set_host()' in the driver, since we don't have s5p_ehci->otg anymore after the same is removed above. Anyways this was helping the old phy-samsung-usb2 driver, and not needed now. > > if (s5p_ehci->phy) > - usb_phy_init(s5p_ehci->phy); > + phy_power_on(s5p_ehci->phy); > else if (s5p_ehci->pdata->phy_init) > s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST); > > @@ -188,7 +189,7 @@ skip_phy: > > fail_add_hcd: > if (s5p_ehci->phy) > - usb_phy_shutdown(s5p_ehci->phy); > + phy_power_off(s5p_ehci->phy); > else if (s5p_ehci->pdata->phy_exit) > s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); > fail_io: > @@ -209,7 +210,7 @@ static int s5p_ehci_remove(struct platform_device *pdev) > s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self); ditto > > if (s5p_ehci->phy) > - usb_phy_shutdown(s5p_ehci->phy); > + phy_power_off(s5p_ehci->phy); > else if (s5p_ehci->pdata->phy_exit) > s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); > > @@ -244,7 +245,7 @@ static int s5p_ehci_suspend(struct device *dev) > s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self); ditto > > if (s5p_ehci->phy) > - usb_phy_shutdown(s5p_ehci->phy); > + phy_power_off(s5p_ehci->phy); > else if (s5p_ehci->pdata->phy_exit) > s5p_ehci->pdata->phy_exit(pdev, USB_PHY_TYPE_HOST); > > @@ -265,7 +266,7 @@ static int s5p_ehci_resume(struct device *dev) > s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self); ditto > > if (s5p_ehci->phy) > - usb_phy_init(s5p_ehci->phy); > + phy_power_on(s5p_ehci->phy); > else if (s5p_ehci->pdata->phy_init) > s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST); > [..] Rest looks good. :-) -- Best Regards Vivek -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/