linux-kernel - Re: [PATCH 1/3] usb: chipidea: add support for USB OTG controller on LSI Zevio SoCs

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Date:	Mon, 16 Dec 2013 09:19:05 +0800
From:	Peter Chen <peter.chen@...escale.com>
To:	<dt.tangr@...il.com>
CC:	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] usb: chipidea: add support for USB OTG controller
 on LSI Zevio SoCs

On Sun, Dec 15, 2013 at 02:35:07PM +1100, dt.tangr@...il.com wrote:
> From: Daniel Tang <dt.tangr@...il.com>
> 
> The USB controller in TI-NSPIRE calculators (LSI Zevio SoC) are based off either
> Freescale's USB OTG controller or the USB controller found in the IMX233, both
> of which are Chipidea compatible.
> 
> This patch adds a device tree binding for the controller.
> 
> Signed-off-by: Daniel Tang <dt.tangr@...il.com>
> ---
>  drivers/usb/chipidea/Makefile        |    1 +
>  drivers/usb/chipidea/ci_hdrc_zevio.c |   72 ++++++++++++++++++++++++++++++++++
>  2 files changed, 73 insertions(+)
>  create mode 100644 drivers/usb/chipidea/ci_hdrc_zevio.c
> 
> diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
> index a99d980..7635407 100644
> --- a/drivers/usb/chipidea/Makefile
> +++ b/drivers/usb/chipidea/Makefile
> @@ -10,6 +10,7 @@ ci_hdrc-$(CONFIG_USB_CHIPIDEA_DEBUG)	+= debug.o
>  # Glue/Bridge layers go here
>  
>  obj-$(CONFIG_USB_CHIPIDEA)	+= ci_hdrc_msm.o
> +obj-$(CONFIG_USB_CHIPIDEA)	+= ci_hdrc_zevio.o
>  
>  # PCI doesn't provide stubs, need to check
>  ifneq ($(CONFIG_PCI),)
> diff --git a/drivers/usb/chipidea/ci_hdrc_zevio.c b/drivers/usb/chipidea/ci_hdrc_zevio.c
> new file mode 100644
> index 0000000..3bf6489
> --- /dev/null
> +++ b/drivers/usb/chipidea/ci_hdrc_zevio.c
> @@ -0,0 +1,72 @@
> +/*
> + *	Copyright (C) 2013 Daniel Tang <tangrs@...grs.id.au>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2, as
> + * published by the Free Software Foundation.
> + *
> + * Based off drivers/usb/chipidea/ci_hdrc_msm.c
> + *
> + */
> +
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/usb/gadget.h>
> +#include <linux/usb/chipidea.h>
> +
> +#include "ci.h"
> +
> +static struct ci_hdrc_platform_data ci_hdrc_zevio_platdata = {
> +	.name			= "ci_hdrc_zevio",
> +	.flags			= CI_HDRC_REGS_SHARED,
> +	.capoffset		= DEF_CAPOFFSET,
> +};
> +
> +static int ci_hdrc_zevio_probe(struct platform_device *pdev)
> +{
> +	struct platform_device *ci_pdev;
> +
> +	dev_dbg(&pdev->dev, "ci_hdrc_zevio_probe\n");
> +
> +	ci_pdev = ci_hdrc_add_device(&pdev->dev,
> +				pdev->resource, pdev->num_resources,
> +				&ci_hdrc_zevio_platdata);
> +
> +	if (IS_ERR(ci_pdev)) {
> +		dev_err(&pdev->dev, "ci_hdrc_add_device failed!\n");
> +		return PTR_ERR(ci_pdev);
> +	}
> +
> +	platform_set_drvdata(pdev, ci_pdev);
> +
> +	return 0;
> +}
> +
> +static int ci_hdrc_zevio_remove(struct platform_device *pdev)
> +{
> +	struct platform_device *ci_pdev = platform_get_drvdata(pdev);
> +
> +	ci_hdrc_remove_device(ci_pdev);
> +
> +	return 0;
> +}
> +
> +static const struct of_device_id ci_hdrc_zevio_dt_ids[] = {
> +	{ .compatible = "lsi,zevio-usb", },
> +	{ /* sentinel */ }
> +};
> +
> +static struct platform_driver ci_hdrc_zevio_driver = {
> +	.probe = ci_hdrc_zevio_probe,
> +	.remove = ci_hdrc_zevio_remove,
> +	.driver = {
> +		.name = "zevio_usb",
> +		.owner = THIS_MODULE,
> +		.of_match_table = ci_hdrc_zevio_dt_ids,
> +	},
> +};
> +
> +MODULE_DEVICE_TABLE(of, ci_hdrc_zevio_dt_ids);
> +module_platform_driver(ci_hdrc_zevio_driver);
> +
> +MODULE_LICENSE("GPL v2");
> -- 

The driver patch is okay for me, please cc me your dt patch next
time, I will apply it when your dt patches are applied by
dt maintainer (or any of your dt strings "zevio_xxx" are applied).

-- 

Best Regards,
Peter Chen

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