linux-kernel - Re: [PATCH] usb: dwc2: use well defined macros for power

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Message-ID: <5f719cb4-d5bd-c9be-3a81-62d0a413d22b@synopsys.com>
Date:   Tue, 16 Jun 2020 13:49:20 +0000
From:   Minas Harutyunyan <Minas.Harutyunyan@...opsys.com>
To:     Jisheng Zhang <Jisheng.Zhang@...aptics.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: dwc2: use well defined macros for power_down

Hi,

On 6/16/2020 12:26 PM, Jisheng Zhang wrote:
> Use the well defined macros such as DWC2_POWER_DOWN_PARAM_NONE,
> DWC2_POWER_DOWN_PARAM_PARTIAL and DWC2_POWER_DOWN_PARAM_HIBERNATION
> to make code more readable.
> 
> Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>

Acked-by: Minas Harutyunyan <hminas@...opsys.com>

> ---
>   drivers/usb/dwc2/hcd.c    |  4 ++--
>   drivers/usb/dwc2/params.c | 12 ++++++------
>   2 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
> index b90f858af960..e9ac215b9663 100644
> --- a/drivers/usb/dwc2/hcd.c
> +++ b/drivers/usb/dwc2/hcd.c
> @@ -3628,7 +3628,7 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
>   				"SetPortFeature - USB_PORT_FEAT_SUSPEND\n");
>   			if (windex != hsotg->otg_port)
>   				goto error;
> -			if (hsotg->params.power_down == 2)
> +			if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION)
>   				dwc2_enter_hibernation(hsotg, 1);
>   			else
>   				dwc2_port_suspend(hsotg, windex);
> @@ -3646,7 +3646,7 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
>   			break;
>   
>   		case USB_PORT_FEAT_RESET:
> -			if (hsotg->params.power_down == 2 &&
> +			if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION &&
>   			    hsotg->hibernated)
>   				dwc2_exit_hibernation(hsotg, 0, 1, 1);
>   			hprt0 = dwc2_read_hprt0(hsotg);
> diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c
> index ce736d67c7c3..8f9d061c4d5f 100644
> --- a/drivers/usb/dwc2/params.c
> +++ b/drivers/usb/dwc2/params.c
> @@ -68,14 +68,14 @@ static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)
>   	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
>   		GAHBCFG_HBSTLEN_SHIFT;
>   	p->change_speed_quirk = true;
> -	p->power_down = false;
> +	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
>   }
>   
>   static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg)
>   {
>   	struct dwc2_core_params *p = &hsotg->params;
>   
> -	p->power_down = 0;
> +	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
>   	p->phy_utmi_width = 8;
>   }
>   
> @@ -89,7 +89,7 @@ static void dwc2_set_rk_params(struct dwc2_hsotg *hsotg)
>   	p->host_perio_tx_fifo_size = 256;
>   	p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
>   		GAHBCFG_HBSTLEN_SHIFT;
> -	p->power_down = 0;
> +	p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
>   }
>   
>   static void dwc2_set_ltq_params(struct dwc2_hsotg *hsotg)
> @@ -319,11 +319,11 @@ static void dwc2_set_param_power_down(struct dwc2_hsotg *hsotg)
>   	int val;
>   
>   	if (hsotg->hw_params.hibernation)
> -		val = 2;
> +		val = DWC2_POWER_DOWN_PARAM_HIBERNATION;
>   	else if (hsotg->hw_params.power_optimized)
> -		val = 1;
> +		val = DWC2_POWER_DOWN_PARAM_PARTIAL;
>   	else
> -		val = 0;
> +		val = DWC2_POWER_DOWN_PARAM_NONE;
>   
>   	hsotg->params.power_down = val;
>   }
>