linux-kernel - Re: [PATCH] USB: pch_udc: USB gadget device support for Intel Quark X1000

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Date:	Mon, 11 Aug 2014 05:21:50 +0000
From:	"Chen, Alvin" <alvin.chen@...el.com>
To:	"balbi@...com" <balbi@...com>
CC:	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Ong, Boon Leong" <boon.leong.ong@...el.com>
Subject: Re: [PATCH] USB: pch_udc: USB gadget device support for Intel Quark
 X1000

Hi Felipe,

Any update for this patch? Just want to follow-up.


> -----Original Message-----
> From: Chen, Alvin
> Sent: Tuesday, August 05, 2014 1:23 AM
> To: Felipe Balbi
> Cc: linux-usb@...r.kernel.org; linux-kernel@...r.kernel.org; Ong, Boon 
> Leong
> Subject: [PATCH] USB: pch_udc: USB gadget device support for Intel 
> Quark
> X1000
> 
> From: Bryan O'Donoghue <bryan.odonoghue@...el.com>
> 
> This patch is to enable the USB gadget device for Intel Quark X1000
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...el.com>
> Signed-off-by: Bing Niu <bing.niu@...el.com>
> Signed-off-by: Alvin (Weike) Chen <alvin.chen@...el.com>
> ---
>  drivers/usb/gadget/udc/Kconfig   |    3 ++-
>  drivers/usb/gadget/udc/pch_udc.c |   22 +++++++++++++++++++---
>  2 files changed, 21 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/gadget/udc/Kconfig 
> b/drivers/usb/gadget/udc/Kconfig index 5151f94..34ebaa6 100644
> --- a/drivers/usb/gadget/udc/Kconfig
> +++ b/drivers/usb/gadget/udc/Kconfig
> @@ -332,7 +332,7 @@ config USB_GOKU
>  	   gadget drivers to also be dynamically linked.
> 
>  config USB_EG20T
> -	tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831)
> UDC"
> +	tristate "Intel QUARK X1000/EG20T PCH/LAPIS Semiconductor
> IOH(ML7213/ML7831) UDC"
>  	depends on PCI
>  	help
>  	  This is a USB device driver for EG20T PCH.
> @@ -353,6 +353,7 @@ config USB_EG20T
>  	  ML7213/ML7831 is companion chip for Intel Atom E6xx series.
>  	  ML7213/ML7831 is completely compatible for Intel EG20T PCH.
> 
> +	  This driver can be used with Intel's Quark X1000 SOC platform
>  #
>  # LAST -- dummy/emulated controller
>  #
> diff --git a/drivers/usb/gadget/udc/pch_udc.c
> b/drivers/usb/gadget/udc/pch_udc.c
> index eb8c3be..460d953 100644
> --- a/drivers/usb/gadget/udc/pch_udc.c
> +++ b/drivers/usb/gadget/udc/pch_udc.c
> @@ -343,6 +343,7 @@ struct pch_vbus_gpio_data {
>   * @setup_data:		Received setup data
>   * @phys_addr:		of device memory
>   * @base_addr:		for mapped device memory
> + * @bar:		Indicates which PCI BAR for USB regs
>   * @irq:		IRQ line for the device
>   * @cfg_data:		current cfg, intf, and alt in use
>   * @vbus_gpio:		GPIO informaton for detecting VBUS
> @@ -370,14 +371,17 @@ struct pch_udc_dev {
>  	struct usb_ctrlrequest		setup_data;
>  	unsigned long			phys_addr;
>  	void __iomem			*base_addr;
> +	unsigned			bar;
>  	unsigned			irq;
>  	struct pch_udc_cfg_data		cfg_data;
>  	struct pch_vbus_gpio_data	vbus_gpio;
>  };
>  #define to_pch_udc(g)	(container_of((g), struct pch_udc_dev,
> gadget))
> 
> +#define PCH_UDC_PCI_BAR_QUARK_X1000	0
>  #define PCH_UDC_PCI_BAR			1
>  #define PCI_DEVICE_ID_INTEL_EG20T_UDC	0x8808
> +#define PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC	0x0939
>  #define PCI_VENDOR_ID_ROHM		0x10DB
>  #define PCI_DEVICE_ID_ML7213_IOH_UDC	0x801D
>  #define PCI_DEVICE_ID_ML7831_IOH_UDC	0x8808
> @@ -3076,7 +3080,7 @@ static void pch_udc_remove(struct pci_dev *pdev)
>  		iounmap(dev->base_addr);
>  	if (dev->mem_region)
>  		release_mem_region(dev->phys_addr,
> -				   pci_resource_len(pdev,
> PCH_UDC_PCI_BAR));
> +				   pci_resource_len(pdev, dev->bar));
>  	if (dev->active)
>  		pci_disable_device(pdev);
>  	kfree(dev);
> @@ -3144,9 +3148,15 @@ static int pch_udc_probe(struct pci_dev *pdev,
>  	dev->active = 1;
>  	pci_set_drvdata(pdev, dev);
> 
> +	/* Determine BAR based on PCI ID */
> +	if (id->device == PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC)
> +		dev->bar = PCH_UDC_PCI_BAR_QUARK_X1000;
> +	else
> +		dev->bar = PCH_UDC_PCI_BAR;
> +
>  	/* PCI resource allocation */
> -	resource = pci_resource_start(pdev, 1);
> -	len = pci_resource_len(pdev, 1);
> +	resource = pci_resource_start(pdev, dev->bar);
> +	len = pci_resource_len(pdev, dev->bar);
> 
>  	if (!request_mem_region(resource, len, KBUILD_MODNAME)) {
>  		dev_err(&pdev->dev, "%s: pci device used already\n", __func__); @@ 
> -3212,6 +3222,12 @@ finished:
> 
>  static const struct pci_device_id pch_udc_pcidev_id[] = {
>  	{
> +		PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> +			   PCI_DEVICE_ID_INTEL_QUARK_X1000_UDC),
> +		.class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe,
> +		.class_mask = 0xffffffff,
> +	},
> +	{
>  		PCI_DEVICE(PCI_VENDOR_ID_INTEL,
> PCI_DEVICE_ID_INTEL_EG20T_UDC),
>  		.class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe,
>  		.class_mask = 0xffffffff,
> --
> 1.7.9.5

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