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clk: nomadik: declare OF clock provider

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Common clock framework allows to register clock providers to get called
on of_clk_init() by using CLK_OF_DECLARE. This converts nomadik clock
provider to make use of it and get rid of the mach specific clk init
call. As clocks require system reset controller base address to be
initialized each clock driver checks src_base and calls new
nomadik_src_init if required.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Sebastian Hesselbarth 2013-09-17 00:32:34 +02:00
parent ea25a900f5
commit 74227e65f9
3 changed files with 17 additions and 35 deletions
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5
arch/arm/mach-nomadik/cpu-8815.c
View File

@ -25,7 +25,7 @@
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/dma-mapping.h>
#include <linux/platform_data/clk-nomadik.h>
#include <linux/clk-provider.h>
#include <linux/clocksource.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
@ -115,8 +115,7 @@ static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
static void __init cpu8815_timer_init_of(void)
{
/* We need this to be up now */
nomadik_clk_init();
of_clk_init(NULL);
clocksource_of_init();
}

45
drivers/clk/clk-nomadik.c
View File

@ -512,6 +512,9 @@ static void __init of_nomadik_pll_setup(struct device_node *np)
const char *parent_name;
u32 pll_id;
if (!src_base)
nomadik_src_init();
if (of_property_read_u32(np, "pll-id", &pll_id)) {
pr_err("%s: PLL \"%s\" missing pll-id property\n",
__func__, clk_name);
@ -522,6 +525,8 @@ static void __init of_nomadik_pll_setup(struct device_node *np)
if (!IS_ERR(clk))
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(nomadik_pll_clk,
"st,nomadik-pll-clock", of_nomadik_pll_setup);
static void __init of_nomadik_hclk_setup(struct device_node *np)
{
@ -529,6 +534,9 @@ static void __init of_nomadik_hclk_setup(struct device_node *np)
const char *clk_name = np->name;
const char *parent_name;
if (!src_base)
nomadik_src_init();
parent_name = of_clk_get_parent_name(np, 0);
/*
* The HCLK divides PLL1 with 1 (passthru), 2, 3 or 4.
@ -541,6 +549,8 @@ static void __init of_nomadik_hclk_setup(struct device_node *np)
if (!IS_ERR(clk))
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
CLK_OF_DECLARE(nomadik_hclk_clk,
"st,nomadik-hclk-clock", of_nomadik_hclk_setup);
static void __init of_nomadik_src_clk_setup(struct device_node *np)
{
@ -549,6 +559,9 @@ static void __init of_nomadik_src_clk_setup(struct device_node *np)
const char *parent_name;
u32 clk_id;
if (!src_base)
nomadik_src_init();
if (of_property_read_u32(np, "clock-id", &clk_id)) {
pr_err("%s: SRC clock \"%s\" missing clock-id property\n",
__func__, clk_name);
@ -559,33 +572,5 @@ static void __init of_nomadik_src_clk_setup(struct device_node *np)
if (!IS_ERR(clk))
of_clk_add_provider(np, of_clk_src_simple_get, clk);
}
static const struct of_device_id nomadik_src_clk_match[] __initconst = {
{
.compatible = "fixed-clock",
.data = of_fixed_clk_setup,
},
{
.compatible = "fixed-factor-clock",
.data = of_fixed_factor_clk_setup,
},
{
.compatible = "st,nomadik-pll-clock",
.data = of_nomadik_pll_setup,
},
{
.compatible = "st,nomadik-hclk-clock",
.data = of_nomadik_hclk_setup,
},
{
.compatible = "st,nomadik-src-clock",
.data = of_nomadik_src_clk_setup,
},
{ /* sentinel */ }
};
void __init nomadik_clk_init(void)
{
nomadik_src_init();
of_clk_init(nomadik_src_clk_match);
}
CLK_OF_DECLARE(nomadik_src_clk,
"st,nomadik-src-clock", of_nomadik_src_clk_setup);

2
include/linux/platform_data/clk-nomadik.h
View File

@ -1,2 +0,0 @@
/* Minimal platform data header */
void nomadik_clk_init(void);