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SubjectRe: [PATCH 10/17] fpga: dfl: afu: export __port_enable/disable function.
On Mon, Mar 25, 2019 at 11:07:37AM +0800, Wu Hao wrote:
> As these two functions are used by other private features. e.g.
> in error reporting private feature, it requires to check port status
> and reset port for error clearing.
>
> Signed-off-by: Xu Yilun <yilun.xu@intel.com>
> Signed-off-by: Wu Hao <hao.wu@intel.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
> ---
> drivers/fpga/dfl-afu-main.c | 25 ++++++++++++++-----------
> drivers/fpga/dfl-afu.h | 3 +++
> 2 files changed, 17 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
> index 2916876..e727d9b 100644
> --- a/drivers/fpga/dfl-afu-main.c
> +++ b/drivers/fpga/dfl-afu-main.c
> @@ -24,14 +24,16 @@
> #define DRV_VERSION "0.8"
>
> /**
> - * port_enable - enable a port
> + * __port_enable - enable a port
> * @pdev: port platform device.
> *
> * Enable Port by clear the port soft reset bit, which is set by default.
> * The AFU is unable to respond to any MMIO access while in reset.
> - * port_enable function should only be used after port_disable function.
> + * __port_enable function should only be used after __port_disable function.
> + *
> + * The caller needs to hold lock for protection.
> */
> -static void port_enable(struct platform_device *pdev)
> +void __port_enable(struct platform_device *pdev)
> {
> struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
> void __iomem *base;
> @@ -54,13 +56,14 @@ static void port_enable(struct platform_device *pdev)
> #define RST_POLL_TIMEOUT 1000 /* us */
>
> /**
> - * port_disable - disable a port
> + * __port_disable - disable a port
> * @pdev: port platform device.
> *
> - * Disable Port by setting the port soft reset bit, it puts the port into
> - * reset.
> + * Disable Port by setting the port soft reset bit, it puts the port into reset.
> + *
> + * The caller needs to hold lock for protection.
> */
> -static int port_disable(struct platform_device *pdev)
> +int __port_disable(struct platform_device *pdev)
> {
> struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
> void __iomem *base;
> @@ -106,9 +109,9 @@ static int __port_reset(struct platform_device *pdev)
> {
> int ret;
>
> - ret = port_disable(pdev);
> + ret = __port_disable(pdev);
> if (!ret)
> - port_enable(pdev);
> + __port_enable(pdev);
>
> return ret;
> }
> @@ -810,9 +813,9 @@ static int port_enable_set(struct platform_device *pdev, bool enable)
>
> mutex_lock(&pdata->lock);
> if (enable)
> - port_enable(pdev);
> + __port_enable(pdev);
> else
> - ret = port_disable(pdev);
> + ret = __port_disable(pdev);
> mutex_unlock(&pdata->lock);
>
> return ret;
> diff --git a/drivers/fpga/dfl-afu.h b/drivers/fpga/dfl-afu.h
> index 0c7630a..35e60c5 100644
> --- a/drivers/fpga/dfl-afu.h
> +++ b/drivers/fpga/dfl-afu.h
> @@ -79,6 +79,9 @@ struct dfl_afu {
> struct dfl_feature_platform_data *pdata;
> };
>
> +void __port_enable(struct platform_device *pdev);
> +int __port_disable(struct platform_device *pdev);
> +
> void afu_mmio_region_init(struct dfl_feature_platform_data *pdata);
> int afu_mmio_region_add(struct dfl_feature_platform_data *pdata,
> u32 region_index, u64 region_size, u64 phys, u32 flags);
> --
> 2.7.4
>

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