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Message-id: <000e01cda29a$251922c0$6f4b6840$%han@samsung.com>
Date: Fri, 05 Oct 2012 10:38:38 +0900
From: Jingoo Han <jg1.han@...sung.com>
To: 'Florian Fainelli' <florian@...nwrt.org>
Cc: stern@...land.harvard.edu, linux-usb@...r.kernel.org,
'Greg Kroah-Hartman' <gregkh@...uxfoundation.org>,
'Lennert Buytenhek' <kernel@...tstofly.org>,
'Felipe Balbi' <balbi@...com>,
'Ben Dooks' <ben-linux@...ff.org>,
'Kukjin Kim' <kgene.kim@...sung.com>,
linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org,
'Jingoo Han' <jg1.han@...sung.com>
Subject: Re: [PATCH 14/24] USB: ohci: merge ohci_finish_controller_resume with
ohci_resume
On Friday, October 05, 2012 12:18 AM Florian Fainelli wrote
>
> Merge ohci_finish_controller_resume with ohci_resume as suggested by Alan
> Stern. Since ohci_finish_controller_resume no longer exists, update the
> various OHCI drivers to call ohci_resume() instead. Some drivers used to set
> themselves the bit HCD_FLAG_HW_ACCESSIBLE, which is now handled by
> ohci_resume().
>
> Signed-off-by: Florian Fainelli <florian@...nwrt.org>
For drivers/usb/host/ohci-exynos.c, it looks good.
Acked-by: Jingoo Han <jg1.han@...sung.com>
Best regards,
Jingoo Han
> ---
> drivers/usb/host/ohci-at91.c | 2 +-
> drivers/usb/host/ohci-ep93xx.c | 2 +-
> drivers/usb/host/ohci-exynos.c | 5 +----
> drivers/usb/host/ohci-hcd.c | 41 +++++++++++++++++++++++++++++++++++--
> drivers/usb/host/ohci-hub.c | 42 --------------------------------------
> drivers/usb/host/ohci-omap.c | 2 +-
> drivers/usb/host/ohci-platform.c | 2 +-
> drivers/usb/host/ohci-pxa27x.c | 2 +-
> drivers/usb/host/ohci-s3c2410.c | 3 +--
> drivers/usb/host/ohci-spear.c | 2 +-
> drivers/usb/host/ohci-tmio.c | 2 +-
> 11 files changed, 48 insertions(+), 57 deletions(-)
>
> diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
> index 0bf72f9..908d84a 100644
> --- a/drivers/usb/host/ohci-at91.c
> +++ b/drivers/usb/host/ohci-at91.c
> @@ -705,7 +705,7 @@ static int ohci_hcd_at91_drv_resume(struct platform_device *pdev)
> if (!clocked)
> at91_start_clock();
>
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
> #else
> diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
> index dbfbd1d..a982f04 100644
> --- a/drivers/usb/host/ohci-ep93xx.c
> +++ b/drivers/usb/host/ohci-ep93xx.c
> @@ -194,7 +194,7 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
>
> ep93xx_start_hc(&pdev->dev);
>
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
> #endif
> diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
> index fc3091b..53c5a989 100644
> --- a/drivers/usb/host/ohci-exynos.c
> +++ b/drivers/usb/host/ohci-exynos.c
> @@ -252,10 +252,7 @@ static int exynos_ohci_resume(struct device *dev)
> if (pdata && pdata->phy_init)
> pdata->phy_init(pdev, S5P_USB_PHY_HOST);
>
> - /* Mark hardware accessible again as we are out of D3 state by now */
> - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
> -
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
>
> return 0;
> }
> diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
> index 5d30992..568bdb3 100644
> --- a/drivers/usb/host/ohci-hcd.c
> +++ b/drivers/usb/host/ohci-hcd.c
> @@ -1003,13 +1003,50 @@ static int __maybe_unused ohci_suspend(struct usb_hcd *hcd, bool do_wakeup)
>
> static int __maybe_unused ohci_resume(struct usb_hcd *hcd, bool hibernated)
> {
> + struct ohci_hcd *ohci = hcd_to_ohci(hcd);
> + int port;
> + bool need_reinit = false;
> +
> set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
>
> /* Make sure resume from hibernation re-enumerates everything */
> if (hibernated)
> - ohci_usb_reset(hcd_to_ohci(hcd));
> + ohci_usb_reset(ohci);
> +
> + /* See if the controller is already running or has been reset */
> + ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
> + if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
> + need_reinit = true;
> + } else {
> + switch (ohci->hc_control & OHCI_CTRL_HCFS) {
> + case OHCI_USB_OPER:
> + case OHCI_USB_RESET:
> + need_reinit = true;
> + }
> + }
> +
> + /* If needed, reinitialize and suspend the root hub */
> + if (need_reinit) {
> + spin_lock_irq(&ohci->lock);
> + ohci_rh_resume(ohci);
> + ohci_rh_suspend(ohci, 0);
> + spin_unlock_irq(&ohci->lock);
> + }
> +
> + /* Normally just turn on port power and enable interrupts */
> + else {
> + ohci_dbg(ohci, "powerup ports\n");
> + for (port = 0; port < ohci->num_ports; port++)
> + ohci_writel(ohci, RH_PS_PPS,
> + &ohci->regs->roothub.portstatus[port]);
> +
> + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
> + ohci_readl(ohci, &ohci->regs->intrenable);
> + msleep(20);
> + }
> +
> + usb_hcd_resume_root_hub(hcd);
>
> - ohci_finish_controller_resume(hcd);
> return 0;
> }
>
> diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
> index 2f3619e..db09dae 100644
> --- a/drivers/usb/host/ohci-hub.c
> +++ b/drivers/usb/host/ohci-hub.c
> @@ -316,48 +316,6 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
> return rc;
> }
>
> -/* Carry out the final steps of resuming the controller device */
> -static void __maybe_unused ohci_finish_controller_resume(struct usb_hcd *hcd)
> -{
> - struct ohci_hcd *ohci = hcd_to_ohci(hcd);
> - int port;
> - bool need_reinit = false;
> -
> - /* See if the controller is already running or has been reset */
> - ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
> - if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
> - need_reinit = true;
> - } else {
> - switch (ohci->hc_control & OHCI_CTRL_HCFS) {
> - case OHCI_USB_OPER:
> - case OHCI_USB_RESET:
> - need_reinit = true;
> - }
> - }
> -
> - /* If needed, reinitialize and suspend the root hub */
> - if (need_reinit) {
> - spin_lock_irq(&ohci->lock);
> - ohci_rh_resume(ohci);
> - ohci_rh_suspend(ohci, 0);
> - spin_unlock_irq(&ohci->lock);
> - }
> -
> - /* Normally just turn on port power and enable interrupts */
> - else {
> - ohci_dbg(ohci, "powerup ports\n");
> - for (port = 0; port < ohci->num_ports; port++)
> - ohci_writel(ohci, RH_PS_PPS,
> - &ohci->regs->roothub.portstatus[port]);
> -
> - ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
> - ohci_readl(ohci, &ohci->regs->intrenable);
> - msleep(20);
> - }
> -
> - usb_hcd_resume_root_hub(hcd);
> -}
> -
> /* Carry out polling-, autostop-, and autoresume-related state changes */
> static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
> int any_connected, int rhsc_status)
> diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
> index f8b2d91..9fab4d8 100644
> --- a/drivers/usb/host/ohci-omap.c
> +++ b/drivers/usb/host/ohci-omap.c
> @@ -530,7 +530,7 @@ static int ohci_omap_resume(struct platform_device *dev)
> ohci->next_statechange = jiffies;
>
> omap_ohci_clock_power(1);
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
>
> diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c
> index 1caaf65..99d1755 100644
> --- a/drivers/usb/host/ohci-platform.c
> +++ b/drivers/usb/host/ohci-platform.c
> @@ -203,7 +203,7 @@ static int ohci_platform_resume(struct device *dev)
> return err;
> }
>
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
>
> diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
> index 77f4402..8bffde3 100644
> --- a/drivers/usb/host/ohci-pxa27x.c
> +++ b/drivers/usb/host/ohci-pxa27x.c
> @@ -591,7 +591,7 @@ static int ohci_hcd_pxa27x_drv_resume(struct device *dev)
> /* Select Power Management Mode */
> pxa27x_ohci_select_pmm(ohci, inf->port_mode);
>
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
>
> diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
> index 664c869..8af53c6 100644
> --- a/drivers/usb/host/ohci-s3c2410.c
> +++ b/drivers/usb/host/ohci-s3c2410.c
> @@ -524,8 +524,7 @@ static int ohci_hcd_s3c2410_drv_resume(struct device *dev)
>
> s3c2410_start_hc(pdev, hcd);
>
> - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
>
> return 0;
> }
> diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
> index fc7305e..d607be3 100644
> --- a/drivers/usb/host/ohci-spear.c
> +++ b/drivers/usb/host/ohci-spear.c
> @@ -231,7 +231,7 @@ static int spear_ohci_hcd_drv_resume(struct platform_device *dev)
> ohci->next_statechange = jiffies;
>
> spear_start_ohci(ohci_p);
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
> return 0;
> }
> #endif
> diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
> index 60c2b07..2c9ab8f 100644
> --- a/drivers/usb/host/ohci-tmio.c
> +++ b/drivers/usb/host/ohci-tmio.c
> @@ -352,7 +352,7 @@ static int ohci_hcd_tmio_drv_resume(struct platform_device *dev)
>
> spin_unlock_irqrestore(&tmio->lock, flags);
>
> - ohci_finish_controller_resume(hcd);
> + ohci_resume(hcd, false);
>
> return 0;
> }
> --
> 1.7.9.5
>
> --
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