Re: [PATCH RFC v2 08/16] ARM: mxs: remove custom .init_time hook

From: Mike Turquette
Date: Tue Aug 27 2013 - 19:16:23 EST

Quoting Sebastian Hesselbarth (2013-08-27 14:28:02)
> This patch converts clk-imx2[38] clocksource_of_init compatible init
> associated with fsl,imx2[38]-clkctrl. With arch/arm calling
> of_clk_init(NULL) from time_init(), we can now also remove custom
> .init_time hooks.
>
> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>

Acked-by: Mike Turquette <mturquette@xxxxxxxxxx>

Need Shawn's Ack for this as well.

> ---
> Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
> Cc: Mike Turquette <mturquette@xxxxxxxxxx>
> Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
> arch/arm/mach-mxs/mach-mxs.c | 13 -------------
> drivers/clk/mxs/clk-imx23.c | 16 +++++++---------
> drivers/clk/mxs/clk-imx28.c | 16 +++++++---------
> include/linux/clk/mxs.h | 2 --
> 4 files changed, 14 insertions(+), 33 deletions(-)
>
> diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
> index 98f6e2a..cc511a4 100644
> --- a/arch/arm/mach-mxs/mach-mxs.c
> +++ b/arch/arm/mach-mxs/mach-mxs.c
> @@ -13,8 +13,6 @@
> #include <linux/clk.h>
> #include <linux/clk/mxs.h>
> #include <linux/clkdev.h>
> -#include <linux/clocksource.h>
> -#include <linux/clk-provider.h>
> #include <linux/delay.h>
> #include <linux/err.h>
> #include <linux/gpio.h>
> @@ -490,16 +488,6 @@ static void mxs_restart(enum reboot_mode mode, const char *cmd)
> soft_restart(0);
> }
>
> -static void __init mxs_timer_init(void)
> -{
> - if (of_machine_is_compatible("fsl,imx23"))
> - mx23_clocks_init();
> - else
> - mx28_clocks_init();
> - of_clk_init(NULL);
> - clocksource_of_init();
> -}
> -
> static const char *mxs_dt_compat[] __initdata = {
> "fsl,imx28",
> "fsl,imx23",
> @@ -508,7 +496,6 @@ static const char *mxs_dt_compat[] __initdata = {
>
> DT_MACHINE_START(MXS, "Freescale MXS (Device Tree)")
> .handle_irq = icoll_handle_irq,
> - .init_time = mxs_timer_init,
> .init_machine = mxs_machine_init,
> .init_late = mxs_pm_init,
> .dt_compat = mxs_dt_compat,
> diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c
> index c396fe3..7eb1d1a 100644
> --- a/drivers/clk/mxs/clk-imx23.c
> +++ b/drivers/clk/mxs/clk-imx23.c
> @@ -12,6 +12,7 @@
> #include <linux/clk.h>
> #include <linux/clk/mxs.h>
> #include <linux/clkdev.h>
> +#include <linux/clk-provider.h>
> #include <linux/err.h>
> #include <linux/init.h>
> #include <linux/io.h>
> @@ -100,19 +101,17 @@ static enum imx23_clk clks_init_on[] __initdata = {
> cpu, hbus, xbus, emi, uart,
> };
>
> -int __init mx23_clocks_init(void)
> +static void __init mx23_clocks_init(struct device_node *np)
> {
> - struct device_node *np;
> u32 i;
>
> + clkctrl = of_iomap(np, 0);
> + WARN_ON(!clkctrl);
> +
> np = of_find_compatible_node(NULL, NULL, "fsl,imx23-digctl");
> digctrl = of_iomap(np, 0);
> WARN_ON(!digctrl);
>
> - np = of_find_compatible_node(NULL, NULL, "fsl,imx23-clkctrl");
> - clkctrl = of_iomap(np, 0);
> - WARN_ON(!clkctrl);
> -
> clk_misc_init();
>
> clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000);
> @@ -162,7 +161,7 @@ int __init mx23_clocks_init(void)
> if (IS_ERR(clks[i])) {
> pr_err("i.MX23 clk %d: register failed with %ld\n",
> i, PTR_ERR(clks[i]));
> - return PTR_ERR(clks[i]);
> + return;
> }
>
> clk_data.clks = clks;
> @@ -171,6 +170,5 @@ int __init mx23_clocks_init(void)
>
> for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
> clk_prepare_enable(clks[clks_init_on[i]]);
> -
> - return 0;
> }
> +CLK_OF_DECLARE(imx23_clkctrl, "fsl,imx23-clkctrl", mx23_clocks_init);
> diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
> index 4faf0af..12d3f3d 100644
> --- a/drivers/clk/mxs/clk-imx28.c
> +++ b/drivers/clk/mxs/clk-imx28.c
> @@ -12,6 +12,7 @@
> #include <linux/clk.h>
> #include <linux/clk/mxs.h>
> #include <linux/clkdev.h>
> +#include <linux/clk-provider.h>
> #include <linux/err.h>
> #include <linux/init.h>
> #include <linux/io.h>
> @@ -154,19 +155,17 @@ static enum imx28_clk clks_init_on[] __initdata = {
> cpu, hbus, xbus, emi, uart,
> };
>
> -int __init mx28_clocks_init(void)
> +static void __init mx28_clocks_init(struct device_node *np)
> {
> - struct device_node *np;
> u32 i;
>
> + clkctrl = of_iomap(np, 0);
> + WARN_ON(!clkctrl);
> +
> np = of_find_compatible_node(NULL, NULL, "fsl,imx28-digctl");
> digctrl = of_iomap(np, 0);
> WARN_ON(!digctrl);
>
> - np = of_find_compatible_node(NULL, NULL, "fsl,imx28-clkctrl");
> - clkctrl = of_iomap(np, 0);
> - WARN_ON(!clkctrl);
> -
> clk_misc_init();
>
> clks[ref_xtal] = mxs_clk_fixed("ref_xtal", 24000000);
> @@ -239,7 +238,7 @@ int __init mx28_clocks_init(void)
> if (IS_ERR(clks[i])) {
> pr_err("i.MX28 clk %d: register failed with %ld\n",
> i, PTR_ERR(clks[i]));
> - return PTR_ERR(clks[i]);
> + return;
> }
>
> clk_data.clks = clks;
> @@ -250,6 +249,5 @@ int __init mx28_clocks_init(void)
>
> for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
> clk_prepare_enable(clks[clks_init_on[i]]);
> -
> - return 0;
> }
> +CLK_OF_DECLARE(imx28_clkctrl, "fsl,imx28-clkctrl", mx28_clocks_init);
> diff --git a/include/linux/clk/mxs.h b/include/linux/clk/mxs.h
> index 90c30dc..5138a90 100644
> --- a/include/linux/clk/mxs.h
> +++ b/include/linux/clk/mxs.h
> @@ -9,8 +9,6 @@
> #ifndef __LINUX_CLK_MXS_H
> #define __LINUX_CLK_MXS_H
>
> -int mx23_clocks_init(void);
> -int mx28_clocks_init(void);
> int mxs_saif_clkmux_select(unsigned int clkmux);
>
> #endif
> --
> 1.7.2.5
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