linux-kernel - Re: [PATCH 5/6] firmware: xilinx: instantiate xilinx event manager driver

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Date:   Mon, 21 Jun 2021 13:48:11 +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 5/6] firmware: xilinx: instantiate xilinx event manager
 driver



On 5/28/21 5:59 PM, Abhyuday Godhasara wrote:
> Register simple platform device to instantiate Xilinx event
> manager driver.
> 
> Signed-off-by: Rajan Vaja <rajan.vaja@...inx.com>
> Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@...inx.com>
> ---
>  drivers/firmware/xilinx/zynqmp.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index ce16a72..31f7857 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -23,6 +23,7 @@
>  #include <linux/hashtable.h>
>  
>  #include <linux/firmware/xlnx-zynqmp.h>
> +#include <linux/firmware/xlnx-event-manager.h>
>  #include "zynqmp-debug.h"
>  
>  /* Max HashMap Order for PM API feature check (1<<7 = 128) */
> @@ -31,6 +32,8 @@
>  static bool feature_check_enabled;
>  static DEFINE_HASHTABLE(pm_api_features_map, PM_API_FEATURE_CHECK_MAX_ORDER);
>  
> +static struct platform_device *em_dev;
> +
>  /**
>   * struct pm_api_feature_data - PM API Feature data
>   * @pm_api_id:		PM API Id, used as key to index into hashmap
> @@ -1412,6 +1415,15 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
>  
>  	zynqmp_pm_api_debugfs_init();
>  
> +	np = of_find_compatible_node(NULL, NULL, "xlnx,versal");
> +	if (np) {
> +		em_dev = platform_device_register_data(&pdev->dev, "xlnx_event_manager",
> +						       -1, NULL, 0);
> +		if (IS_ERR(em_dev))
> +			dev_err_probe(&pdev->dev, PTR_ERR(pdev), "EM register fail with error\n");
> +	}
> +	of_node_put(np);
> +
>  	return of_platform_populate(dev->of_node, NULL, NULL, dev);
>  }
>  
> @@ -1429,6 +1441,8 @@ static int zynqmp_firmware_remove(struct platform_device *pdev)
>  		kfree(feature_data);
>  	}
>  
> +	platform_device_unregister(em_dev);
> +
>  	return 0;
>  }
>  
> 

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

Thanks,
Michal