linux-kernel - Re: [PATCH V7 3/5] mmc: sdhci: Export sdhci tuning function symbol

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Date:   Wed, 25 Jul 2018 10:46:30 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     "ernest.zhang" <ernest.zhang@...hubtech.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     chuanjin.pang@...hubtech.com, mike.li@...hubtech.com,
        chevron.li@...hubtech.com, shirley.her@...hubtech.com,
        xiaoguang.yu@...hubtech.com, bobby.wu@...hubtech.com
Subject: Re: [PATCH V7 3/5] mmc: sdhci: Export sdhci tuning function symbol

On 16/07/18 09:26, ernest.zhang wrote:
> Export sdhci tuning function symbols which are used by other SD Host
> controller driver modules.
> 
> Signed-off-by: ernest.zhang <ernest.zhang@...hubtech.com>

Acked-by: Adrian Hunter <adrian.hunter@...el.com>

> ---
> Changes in V7:
> 	Export sdhci tuning function symbols
> 
> Changes in V1~V6
> 	N/A
> ---
>  drivers/mmc/host/sdhci.c | 12 ++++++++----
>  drivers/mmc/host/sdhci.h |  5 +++++
>  2 files changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index a7b5602ef6f7..bcea179a8d70 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -2103,7 +2103,7 @@ static int sdhci_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios)
>  	return 0;
>  }
>  
> -static void sdhci_start_tuning(struct sdhci_host *host)
> +void sdhci_start_tuning(struct sdhci_host *host)
>  {
>  	u16 ctrl;
>  
> @@ -2126,14 +2126,16 @@ static void sdhci_start_tuning(struct sdhci_host *host)
>  	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_INT_ENABLE);
>  	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_SIGNAL_ENABLE);
>  }
> +EXPORT_SYMBOL_GPL(sdhci_start_tuning);
>  
> -static void sdhci_end_tuning(struct sdhci_host *host)
> +void sdhci_end_tuning(struct sdhci_host *host)
>  {
>  	sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
>  	sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
>  }
> +EXPORT_SYMBOL_GPL(sdhci_end_tuning);
>  
> -static void sdhci_reset_tuning(struct sdhci_host *host)
> +void sdhci_reset_tuning(struct sdhci_host *host)
>  {
>  	u16 ctrl;
>  
> @@ -2142,6 +2144,7 @@ static void sdhci_reset_tuning(struct sdhci_host *host)
>  	ctrl &= ~SDHCI_CTRL_EXEC_TUNING;
>  	sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
>  }
> +EXPORT_SYMBOL_GPL(sdhci_reset_tuning);
>  
>  static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode)
>  {
> @@ -2162,7 +2165,7 @@ static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode)
>   * interrupt setup is different to other commands and there is no timeout
>   * interrupt so special handling is needed.
>   */
> -static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
> +void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
>  {
>  	struct mmc_host *mmc = host->mmc;
>  	struct mmc_command cmd = {};
> @@ -2212,6 +2215,7 @@ static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
>  			   msecs_to_jiffies(50));
>  
>  }
> +EXPORT_SYMBOL_GPL(sdhci_send_tuning);
>  
>  static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
>  {
> diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
> index 23966f887da6..f0bd36ce3817 100644
> --- a/drivers/mmc/host/sdhci.h
> +++ b/drivers/mmc/host/sdhci.h
> @@ -748,4 +748,9 @@ bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
>  
>  void sdhci_dumpregs(struct sdhci_host *host);
>  
> +void sdhci_start_tuning(struct sdhci_host *host);
> +void sdhci_end_tuning(struct sdhci_host *host);
> +void sdhci_reset_tuning(struct sdhci_host *host);
> +void sdhci_send_tuning(struct sdhci_host *host, u32 opcode);
> +
>  #endif /* __SDHCI_HW_H */
>