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- Add device_node ptr to clocksource init functions

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- Add CLKSRC_OF support to twd_smp timer
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Merge tag 'clksrc-cleanup-for-3.10' of git://sources.calxeda.com/kernel/linux into next/cleanup

From Rob Herring <robherring2@gmail.com>:

- Add device_node ptr to clocksource init functions
- Add CLKSRC_OF support to twd_smp timer

* tag 'clksrc-cleanup-for-3.10' of git://sources.calxeda.com/kernel/linux:
  ARM: smp_twd: convert to use CLKSRC_OF init
  clocksource: tegra20: use the device_node pointer passed to init
  clocksource: pass DT node pointer to init functions
  clocksource: add empty version of clocksource_of_init

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2013-03-15 22:57:45 +01:00
commit b0d62d9776
14 changed files with 49 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/Kconfig
View File

@ -1597,6 +1597,7 @@ config HAVE_ARM_ARCH_TIMER
config HAVE_ARM_TWD
bool
depends on SMP
select CLKSRC_OF if OF
help
This options enables support for the ARM timer and watchdog unit

8
arch/arm/include/asm/smp_twd.h
View File

@ -34,12 +34,4 @@ struct twd_local_timer name __initdata = { \
int twd_local_timer_register(struct twd_local_timer *);
#ifdef CONFIG_HAVE_ARM_TWD
void twd_local_timer_of_register(void);
#else
static inline void twd_local_timer_of_register(void)
{
}
#endif
#endif

17
arch/arm/kernel/smp_twd.c
View File

@ -362,25 +362,13 @@ int __init twd_local_timer_register(struct twd_local_timer *tlt)
}
#ifdef CONFIG_OF
const static struct of_device_id twd_of_match[] __initconst = {
{ .compatible = "arm,cortex-a9-twd-timer", },
{ .compatible = "arm,cortex-a5-twd-timer", },
{ .compatible = "arm,arm11mp-twd-timer", },
{ },
};
void __init twd_local_timer_of_register(void)
static void __init twd_local_timer_of_register(struct device_node *np)
{
struct device_node *np;
int err;
if (!is_smp() || !setup_max_cpus)
return;
np = of_find_matching_node(NULL, twd_of_match);
if (!np)
return;
twd_ppi = irq_of_parse_and_map(np, 0);
if (!twd_ppi) {
err = -EINVAL;
@ -398,4 +386,7 @@ void __init twd_local_timer_of_register(void)
out:
WARN(err, "twd_local_timer_of_register failed (%d)\n", err);
}
CLOCKSOURCE_OF_DECLARE(arm_twd_a9, "arm,cortex-a9-twd-timer", twd_local_timer_of_register);
CLOCKSOURCE_OF_DECLARE(arm_twd_a5, "arm,cortex-a5-twd-timer", twd_local_timer_of_register);
CLOCKSOURCE_OF_DECLARE(arm_twd_11mp, "arm,arm11mp-twd-timer", twd_local_timer_of_register);
#endif

5
arch/arm/mach-highbank/highbank.c
View File

@ -32,7 +32,6 @@
#include <asm/cacheflush.h>
#include <asm/cputype.h>
#include <asm/smp_plat.h>
#include <asm/smp_twd.h>
#include <asm/hardware/arm_timer.h>
#include <asm/hardware/timer-sp.h>
#include <asm/hardware/cache-l2x0.h>
@ -119,10 +118,10 @@ static void __init highbank_timer_init(void)
sp804_clocksource_and_sched_clock_init(timer_base + 0x20, "timer1");
sp804_clockevents_init(timer_base, irq, "timer0");
twd_local_timer_of_register();
arch_timer_of_register();
arch_timer_sched_clock_init();
clocksource_of_init();
}
static void highbank_power_off(void)

5
arch/arm/mach-imx/mach-imx6q.c
View File

@ -12,6 +12,7 @@
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clocksource.h>
#include <linux/cpu.h>
#include <linux/delay.h>
#include <linux/export.h>
@ -28,11 +29,9 @@
#include <linux/regmap.h>
#include <linux/micrel_phy.h>
#include <linux/mfd/syscon.h>
#include <asm/smp_twd.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/system_misc.h>
#include "common.h"
@ -292,7 +291,7 @@ static void __init imx6q_init_irq(void)
static void __init imx6q_timer_init(void)
{
mx6q_clocks_init();
twd_local_timer_of_register();
clocksource_of_init();
imx_print_silicon_rev("i.MX6Q", imx6q_revision());
}

2
arch/arm/mach-omap2/timer.c
View File

@ -597,7 +597,7 @@ void __init omap4_local_timer_init(void)
int err;
if (of_have_populated_dt()) {
twd_local_timer_of_register();
clocksource_of_init();
return;
}

4
arch/arm/mach-spear13xx/spear13xx.c
View File

@ -15,12 +15,12 @@
#include <linux/amba/pl022.h>
#include <linux/clk.h>
#include <linux/clocksource.h>
#include <linux/dw_dmac.h>
#include <linux/err.h>
#include <linux/of.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/map.h>
#include <asm/smp_twd.h>
#include <mach/dma.h>
#include <mach/generic.h>
#include <mach/spear.h>
@ -179,5 +179,5 @@ void __init spear13xx_timer_init(void)
clk_put(pclk);
spear_setup_of_timer();
twd_local_timer_of_register();
clocksource_of_init();
}

3
arch/arm/mach-ux500/timer.c
View File

@ -7,6 +7,7 @@
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/clksrc-dbx500-prcmu.h>
#include <linux/clocksource.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_data/clocksource-nomadik-mtu.h>
@ -32,7 +33,7 @@ static void __init ux500_twd_init(void)
twd_local_timer = &u8500_twd_local_timer;
if (of_have_populated_dt())
twd_local_timer_of_register();
clocksource_of_init();
else {
err = twd_local_timer_register(twd_local_timer);
if (err)

6
arch/arm/mach-vexpress/v2m.c
View File

@ -5,6 +5,7 @@
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
#include <linux/clocksource.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/irqchip.h>
@ -25,7 +26,6 @@
#include <asm/arch_timer.h>
#include <asm/mach-types.h>
#include <asm/sizes.h>
#include <asm/smp_twd.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
@ -435,6 +435,7 @@ static void __init v2m_dt_timer_init(void)
vexpress_clk_of_init();
clocksource_of_init();
do {
node = of_find_compatible_node(node, NULL, "arm,sp804");
} while (node && vexpress_get_site_by_node(node) != VEXPRESS_SITE_MB);
@ -445,8 +446,7 @@ static void __init v2m_dt_timer_init(void)
irq_of_parse_and_map(node, 0));
}
if (arch_timer_of_register() != 0)
twd_local_timer_of_register();
arch_timer_of_register();
if (arch_timer_sched_clock_init() != 0)
versatile_sched_clock_init(vexpress_get_24mhz_clock_base(),

12
drivers/clocksource/bcm2835_timer.c
View File

@ -95,23 +95,13 @@ static irqreturn_t bcm2835_time_interrupt(int irq, void *dev_id)
}
}
static struct of_device_id bcm2835_time_match[] __initconst = {
{ .compatible = "brcm,bcm2835-system-timer" },
{}
};
static void __init bcm2835_timer_init(void)
static void __init bcm2835_timer_init(struct device_node *node)
{
struct device_node *node;
void __iomem *base;
u32 freq;
int irq;
struct bcm2835_timer *timer;
node = of_find_matching_node(NULL, bcm2835_time_match);
if (!node)
panic("No bcm2835 timer node");
base = of_iomap(node, 0);
if (!base)
panic("Can't remap registers");

4
drivers/clocksource/clksrc-of.c
View File

@ -26,10 +26,10 @@ void __init clocksource_of_init(void)
{
struct device_node *np;
const struct of_device_id *match;
void (*init_func)(void);
void (*init_func)(struct device_node *);
for_each_matching_node_and_match(np, __clksrc_of_table, &match) {
init_func = match->data;
init_func();
init_func(np);
}
}

73
drivers/clocksource/tegra20_timer.c
View File

@ -154,29 +154,12 @@ static struct irqaction tegra_timer_irq = {
.dev_id = &tegra_clockevent,
};
static const struct of_device_id timer_match[] __initconst = {
{ .compatible = "nvidia,tegra20-timer" },
{}
};
static const struct of_device_id rtc_match[] __initconst = {
{ .compatible = "nvidia,tegra20-rtc" },
{}
};
static void __init tegra20_init_timer(void)
static void __init tegra20_init_timer(struct device_node *np)
{
struct device_node *np;
struct clk *clk;
unsigned long rate;
int ret;
np = of_find_matching_node(NULL, timer_match);
if (!np) {
pr_err("Failed to find timer DT node\n");
BUG();
}
timer_reg_base = of_iomap(np, 0);
if (!timer_reg_base) {
pr_err("Can't map timer registers\n");
@ -200,30 +183,6 @@ static void __init tegra20_init_timer(void)
of_node_put(np);
np = of_find_matching_node(NULL, rtc_match);
if (!np) {
pr_err("Failed to find RTC DT node\n");
BUG();
}
rtc_base = of_iomap(np, 0);
if (!rtc_base) {
pr_err("Can't map RTC registers");
BUG();
}
/*
* rtc registers are used by read_persistent_clock, keep the rtc clock
* enabled
*/
clk = clk_get_sys("rtc-tegra", NULL);
if (IS_ERR(clk))
pr_warn("Unable to get rtc-tegra clock\n");
else
clk_prepare_enable(clk);
of_node_put(np);
switch (rate) {
case 12000000:
timer_writel(0x000b, TIMERUS_USEC_CFG);
@ -259,12 +218,34 @@ static void __init tegra20_init_timer(void)
tegra_clockevent.irq = tegra_timer_irq.irq;
clockevents_config_and_register(&tegra_clockevent, 1000000,
0x1, 0x1fffffff);
#ifdef CONFIG_HAVE_ARM_TWD
twd_local_timer_of_register();
#endif
}
CLOCKSOURCE_OF_DECLARE(tegra20_timer, "nvidia,tegra20-timer", tegra20_init_timer);
static void __init tegra20_init_rtc(struct device_node *np)
{
struct clk *clk;
rtc_base = of_iomap(np, 0);
if (!rtc_base) {
pr_err("Can't map RTC registers");
BUG();
}
/*
* rtc registers are used by read_persistent_clock, keep the rtc clock
* enabled
*/
clk = clk_get_sys("rtc-tegra", NULL);
if (IS_ERR(clk))
pr_warn("Unable to get rtc-tegra clock\n");
else
clk_prepare_enable(clk);
of_node_put(np);
register_persistent_clock(NULL, tegra_read_persistent_clock);
}
CLOCKSOURCE_OF_DECLARE(tegra20, "nvidia,tegra20-timer", tegra20_init_timer);
CLOCKSOURCE_OF_DECLARE(tegra20_rtc, "nvidia,tegra20-rtc", tegra20_init_rtc);
#ifdef CONFIG_PM
static u32 usec_config;

14
drivers/clocksource/vt8500_timer.c
View File

@ -129,22 +129,10 @@ static struct irqaction irq = {
.dev_id = &clockevent,
};
static struct of_device_id vt8500_timer_ids[] = {
{ .compatible = "via,vt8500-timer" },
{ }
};
static void __init vt8500_timer_init(void)
static void __init vt8500_timer_init(struct device_node *np)
{
struct device_node *np;
int timer_irq;
np = of_find_matching_node(NULL, vt8500_timer_ids);
if (!np) {
pr_err("%s: Timer description missing from Device Tree\n",
__func__);
return;
}
regbase = of_iomap(np, 0);
if (!regbase) {
pr_err("%s: Missing iobase description in Device Tree\n",

1
include/linux/clocksource.h
View File

@ -340,6 +340,7 @@ extern void clocksource_of_init(void);
__used __section(__clksrc_of_table) \
= { .compatible = compat, .data = fn };
#else
static inline void clocksource_of_init(void) {}
#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)
#endif