linux-kernel - Re: [PATCH v2 4/4] soc: kunpeng_hccs: Migrate to use generic PCC shmem related macros

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Date:   Thu, 28 Sep 2023 19:30:44 +0800
From:   "lihuisong (C)" <lihuisong@...wei.com>
To:     Sudeep Holla <sudeep.holla@....com>, <linux-hwmon@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
        <linux-acpi@...r.kernel.org>
CC:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH v2 4/4] soc: kunpeng_hccs: Migrate to use generic PCC
 shmem related macros

lgtm,
Reviewed-by: Huisong Li <lihuisong@...wei.com>


在 2023/9/28 0:26, Sudeep Holla 写道:
> Use the newly defined common and generic PCC shared memory region
> related macros in this driver to replace the locally defined ones.
>
> Cc: Huisong Li <lihuisong@...wei.com>
> Signed-off-by: Sudeep Holla <sudeep.holla@....com>
> ---
>   drivers/soc/hisilicon/kunpeng_hccs.c | 8 ++------
>   1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/soc/hisilicon/kunpeng_hccs.c b/drivers/soc/hisilicon/kunpeng_hccs.c
> index f3810d9d1caa..27a96cafd1ea 100644
> --- a/drivers/soc/hisilicon/kunpeng_hccs.c
> +++ b/drivers/soc/hisilicon/kunpeng_hccs.c
> @@ -31,10 +31,6 @@
>   
>   #include "kunpeng_hccs.h"
>   
> -/* PCC defines */
> -#define HCCS_PCC_SIGNATURE_MASK		0x50434300
> -#define HCCS_PCC_STATUS_CMD_COMPLETE	BIT(0)
> -
>   /*
>    * Arbitrary retries in case the remote processor is slow to respond
>    * to PCC commands
> @@ -187,7 +183,7 @@ static int hccs_check_chan_cmd_complete(struct hccs_dev *hdev)
>   	 * deadline_us(timeout_us) until PCC command complete bit is set(cond)
>   	 */
>   	ret = readw_poll_timeout(&comm_base->status, status,
> -				 status & HCCS_PCC_STATUS_CMD_COMPLETE,
> +				 status & PCC_STATUS_CMD_COMPLETE,
>   				 HCCS_POLL_STATUS_TIME_INTERVAL_US,
>   				 cl_info->deadline_us);
>   	if (unlikely(ret))
> @@ -208,7 +204,7 @@ static int hccs_pcc_cmd_send(struct hccs_dev *hdev, u8 cmd,
>   	int ret;
>   
>   	/* Write signature for this subspace */
> -	tmp.signature = HCCS_PCC_SIGNATURE_MASK | hdev->chan_id;
> +	tmp.signature = PCC_SIGNATURE | hdev->chan_id;
>   	/* Write to the shared command region */
>   	tmp.command = cmd;
>   	/* Clear cmd complete bit */
>