linux-kernel - Re: [PATCH 1/3] clk: imx: Declare clock init functions in header acessible from mach

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Date:   Sat, 5 Sep 2020 15:42:36 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Russell King <linux@...linux.org.uk>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH 1/3] clk: imx: Declare clock init functions in header
 acessible from mach

On Wed, Sep 02, 2020 at 05:02:42PM +0200, Krzysztof Kozlowski wrote:
> Multiple files from arch/arm/mach-imx/ use clock init functions which
> are defined in the IMX clock drivers.  Declare them in globally
> accessible header to fix GCC warnings:
> 
>   drivers/clk/imx/clk-imx21.c:122:74: warning: no previous prototype for 'mx21_clocks_init' [-Wmissing-prototypes]
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Fabio is working on converting these platforms to DT only, so we will be
able to use CLK_OF_DECLARE() for calling these clock init functions
soon.

Shawn

> ---
>  drivers/clk/imx/clk-imx21.c |  1 +
>  drivers/clk/imx/clk-imx27.c |  1 +
>  drivers/clk/imx/clk-imx31.c |  1 +
>  drivers/clk/imx/clk-imx35.c |  1 +
>  include/linux/clk/imx.h     | 11 +++++++++++
>  5 files changed, 15 insertions(+)
>  create mode 100644 include/linux/clk/imx.h
> 
> diff --git a/drivers/clk/imx/clk-imx21.c b/drivers/clk/imx/clk-imx21.c
> index 077b4a7123ce..2105ef57b6bc 100644
> --- a/drivers/clk/imx/clk-imx21.c
> +++ b/drivers/clk/imx/clk-imx21.c
> @@ -7,6 +7,7 @@
>  
>  #include <linux/clk-provider.h>
>  #include <linux/clkdev.h>
> +#include <linux/clk/imx.h>
>  #include <linux/io.h>
>  #include <linux/of.h>
>  #include <linux/of_address.h>
> diff --git a/drivers/clk/imx/clk-imx27.c b/drivers/clk/imx/clk-imx27.c
> index a3753067fc12..c0d8bcdf0719 100644
> --- a/drivers/clk/imx/clk-imx27.c
> +++ b/drivers/clk/imx/clk-imx27.c
> @@ -2,6 +2,7 @@
>  #include <linux/clk.h>
>  #include <linux/clk-provider.h>
>  #include <linux/clkdev.h>
> +#include <linux/clk/imx.h>
>  #include <linux/err.h>
>  #include <linux/io.h>
>  #include <linux/of.h>
> diff --git a/drivers/clk/imx/clk-imx31.c b/drivers/clk/imx/clk-imx31.c
> index 4bb05e440cdd..25be4c292e44 100644
> --- a/drivers/clk/imx/clk-imx31.c
> +++ b/drivers/clk/imx/clk-imx31.c
> @@ -6,6 +6,7 @@
>  #include <linux/module.h>
>  #include <linux/clk.h>
>  #include <linux/clkdev.h>
> +#include <linux/clk/imx.h>
>  #include <linux/io.h>
>  #include <linux/err.h>
>  #include <linux/of.h>
> diff --git a/drivers/clk/imx/clk-imx35.c b/drivers/clk/imx/clk-imx35.c
> index e595f559907f..baf8d236d6ef 100644
> --- a/drivers/clk/imx/clk-imx35.c
> +++ b/drivers/clk/imx/clk-imx35.c
> @@ -5,6 +5,7 @@
>  #include <linux/mm.h>
>  #include <linux/delay.h>
>  #include <linux/clk.h>
> +#include <linux/clk/imx.h>
>  #include <linux/io.h>
>  #include <linux/clkdev.h>
>  #include <linux/of.h>
> diff --git a/include/linux/clk/imx.h b/include/linux/clk/imx.h
> new file mode 100644
> index 000000000000..f6394d1b0a94
> --- /dev/null
> +++ b/include/linux/clk/imx.h
> @@ -0,0 +1,11 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +
> +#ifndef __LINUX_CLK_IMX_H
> +#define __LINUX_CLK_IMX_H
> +
> +int mx21_clocks_init(unsigned long lref, unsigned long href);
> +int mx27_clocks_init(unsigned long fref);
> +int mx31_clocks_init(unsigned long fref);
> +int mx35_clocks_init(void);
> +
> +#endif /* __LINUX_CLK_IMX_H */
> -- 
> 2.17.1
>