linux-kernel - Re: [PATCH] usb: tegra: moving phy driver into drivers directory

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Date:	Tue, 28 Aug 2012 12:49:26 +0300
From:	Felipe Balbi <balbi@...com>
To:	Venu Byravarasu <vbyravarasu@...dia.com>
Cc:	ccross@...roid.com, olof@...om.net, swarren@...dotorg.org,
	linux@....linux.org.uk, stern@...land.harvard.edu,
	gregkh@...uxfoundation.org, balbi@...com,
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] usb: tegra: moving phy driver into drivers directory

Hi,

On Tue, Aug 28, 2012 at 03:02:18PM +0530, Venu Byravarasu wrote:
> In order to keep up with the USB driver files organization,
> moving USB phy driver from mach-tegra to drivers/USB directory.
> 
> Signed-off-by: Venu Byravarasu <vbyravarasu@...dia.com>
> ---
>  arch/arm/mach-tegra/Makefile                       |    1 -
>  arch/arm/mach-tegra/devices.c                      |    8 +-------
>  arch/arm/mach-tegra/devices.h                      |    2 --
>  drivers/usb/host/ehci-tegra.c                      |    2 +-
>  drivers/usb/phy/Makefile                           |    1 +
>  .../usb_phy.c => drivers/usb/phy/tegra_usb_phy.c   |    4 +---
>  .../usb_phy.h => drivers/usb/phy/tegra_usb_phy.h   |    2 --
>  7 files changed, 4 insertions(+), 16 deletions(-)
>  rename arch/arm/mach-tegra/usb_phy.c => drivers/usb/phy/tegra_usb_phy.c (99%)
>  rename arch/arm/mach-tegra/include/mach/usb_phy.h => drivers/usb/phy/tegra_usb_phy.h (97%)
> 
> diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
> index b94858f..b542dac 100644
> --- a/arch/arm/mach-tegra/Makefile
> +++ b/arch/arm/mach-tegra/Makefile
> @@ -25,7 +25,6 @@ obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
>  obj-$(CONFIG_TEGRA_SYSTEM_DMA)		+= dma.o
>  obj-$(CONFIG_CPU_FREQ)                  += cpu-tegra.o
>  obj-$(CONFIG_TEGRA_PCI)			+= pcie.o
> -obj-$(CONFIG_USB_SUPPORT)		+= usb_phy.o
>  
>  obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= board-dt-tegra20.o
>  obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= board-dt-tegra30.o
> diff --git a/arch/arm/mach-tegra/devices.c b/arch/arm/mach-tegra/devices.c
> index 61e9603..232d7e1 100644
> --- a/arch/arm/mach-tegra/devices.c
> +++ b/arch/arm/mach-tegra/devices.c
> @@ -26,7 +26,6 @@
>  #include <mach/irqs.h>
>  #include <mach/iomap.h>
>  #include <mach/dma.h>
> -#include <mach/usb_phy.h>
>  
>  #include "gpio-names.h"
>  #include "devices.h"
> @@ -438,11 +437,6 @@ static struct resource tegra_usb3_resources[] = {
>  	},
>  };
>  
> -struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
> -	.reset_gpio = -1,
> -	.clk = "cdev2",
> -};
> -
>  struct tegra_ehci_platform_data tegra_ehci1_pdata = {
>  	.operating_mode = TEGRA_USB_OTG,
>  	.power_down_on_bus_suspend = 1,
> @@ -450,7 +444,7 @@ struct tegra_ehci_platform_data tegra_ehci1_pdata = {
>  };
>  
>  struct tegra_ehci_platform_data tegra_ehci2_pdata = {
> -	.phy_config = &tegra_ehci2_ulpi_phy_config,
> +	.phy_config = NULL,
>  	.operating_mode = TEGRA_USB_HOST,
>  	.power_down_on_bus_suspend = 1,
>  	.vbus_gpio = -1,
> diff --git a/arch/arm/mach-tegra/devices.h b/arch/arm/mach-tegra/devices.h
> index 4f50527..6bac5e6 100644
> --- a/arch/arm/mach-tegra/devices.h
> +++ b/arch/arm/mach-tegra/devices.h
> @@ -22,8 +22,6 @@
>  #include <linux/platform_device.h>
>  #include <linux/platform_data/tegra_usb.h>
>  
> -#include <mach/usb_phy.h>
> -
>  extern struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config;
>  
>  extern struct tegra_ehci_platform_data tegra_ehci1_pdata;
> diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
> index 75eca42..a03e279 100644
> --- a/drivers/usb/host/ehci-tegra.c
> +++ b/drivers/usb/host/ehci-tegra.c
> @@ -27,7 +27,7 @@
>  #include <linux/of_gpio.h>
>  #include <linux/pm_runtime.h>
>  
> -#include <mach/usb_phy.h>
> +#include "../phy/tegra_usb_phy.h"
>  #include <mach/iomap.h>
>  
>  #define TEGRA_USB_DMA_ALIGN 32
> diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
> index eca095b..663164f 100644
> --- a/drivers/usb/phy/Makefile
> +++ b/drivers/usb/phy/Makefile
> @@ -5,3 +5,4 @@
>  ccflags-$(CONFIG_USB_DEBUG) := -DDEBUG
>  
>  obj-$(CONFIG_USB_ISP1301)		+= isp1301.o
> +obj-$(CONFIG_USB_EHCI_TEGRA)		+= tegra_usb_phy.o
> diff --git a/arch/arm/mach-tegra/usb_phy.c b/drivers/usb/phy/tegra_usb_phy.c
> similarity index 99%
> rename from arch/arm/mach-tegra/usb_phy.c
> rename to drivers/usb/phy/tegra_usb_phy.c
> index 022b33a..c856716 100644
> --- a/arch/arm/mach-tegra/usb_phy.c
> +++ b/drivers/usb/phy/tegra_usb_phy.c
> @@ -1,6 +1,4 @@
>  /*
> - * arch/arm/mach-tegra/usb_phy.c
> - *
>   * Copyright (C) 2010 Google, Inc.
>   *
>   * Author:
> @@ -31,7 +29,7 @@
>  #include <linux/usb/ulpi.h>
>  #include <asm/mach-types.h>
>  #include <mach/gpio-tegra.h>
> -#include <mach/usb_phy.h>
> +#include "tegra_usb_phy.h"
>  #include <mach/iomap.h>
>  
>  #define ULPI_VIEWPORT		0x170

NAK, needs to be converted to proper PHY driver (misnamed as
include/linux/usb/otg.h). You will need proper phy->init, phy->suspend,
phy->resume, etc callbacks.

-- 
balbi

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