linux-kernel - Re: [PATCH 3/6] firmware: xilinx: export the feature check of zynqmp firmware

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Date:   Mon, 21 Jun 2021 13:46:13 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Abhyuday Godhasara <abhyuday.godhasara@...inx.com>,
        <michal.simek@...inx.com>
CC:     <rajan.vaja@...inx.com>, <manish.narani@...inx.com>,
        <zou_wei@...wei.com>, <amit.sunil.dhamne@...inx.com>,
        <lakshmi.sai.krishna.potthuri@...inx.com>,
        <wendy.liang@...inx.com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 3/6] firmware: xilinx: export the feature check of zynqmp
 firmware



On 5/28/21 5:59 PM, Abhyuday Godhasara wrote:
> From: Rajan Vaja <rajan.vaja@...inx.com>
> 
> Export the zynqmp_pm_feature(), so it can be use by other as to get API
> version available in firmware.
> 
> Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
> Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@...inx.com>
> ---
>  drivers/firmware/xilinx/zynqmp.c     | 3 ++-
>  include/linux/firmware/xlnx-zynqmp.h | 6 ++++++
>  2 files changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index 33f190e..ce16a72 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -153,7 +153,7 @@ static noinline int do_fw_call_hvc(u64 arg0, u64 arg1, u64 arg2,
>   *
>   * Return: Returns status, either success or error+reason
>   */
> -static int zynqmp_pm_feature(u32 api_id)
> +int zynqmp_pm_feature(const u32 api_id)
>  {
>  	int ret;
>  	u32 ret_payload[PAYLOAD_ARG_CNT];
> @@ -190,6 +190,7 @@ static int zynqmp_pm_feature(u32 api_id)
>  
>  	return ret;
>  }
> +EXPORT_SYMBOL_GPL(zynqmp_pm_feature);
>  
>  /**
>   * zynqmp_pm_invoke_fn() - Invoke the system-level platform management layer
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index c715756..06ea5a4 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -427,6 +427,7 @@ int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
>  				 u32 value);
>  int zynqmp_pm_register_notifier(const u32 node, const u32 event,
>  				const u32 wake, const u32 enable);
> +int zynqmp_pm_feature(const u32 api_id);
>  #else
>  static inline int zynqmp_pm_get_api_version(u32 *version)
>  {
> @@ -644,6 +645,11 @@ static inline int zynqmp_pm_register_notifier(const u32 node, const u32 event,
>  {
>  	return -ENODEV;
>  }
> +
> +static inline int zynqmp_pm_feature(const u32 api_id)
> +{
> +	return -ENODEV;
> +}
>  #endif
>  
>  #endif /* __FIRMWARE_ZYNQMP_H__ */
> 

Acked-by: Michal Simek <michal.simek@...inx.com>

Thanks,
Michal