clocksource: pass DT node pointer to init functions

In cases where we have multiple nodes of the same type, we may need the
node pointer to know which node was matched. Passing the node pointer
also keeps the init function from having to match the node a 2nd time.

Update bcm2835, vt8500, and tegra20 init functions for the new function
prototype. Further tegra20 clean-ups are in follow-up commit.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Tested-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c
index 50c68fef944be525601d9ecc9b42d2e9287cfb7c..766611d299455efa3699fe49d5aa9a42812bd226 100644 (file)
--- a/drivers/clocksource/bcm2835_timer.c
+++ b/drivers/clocksource/bcm2835_timer.c
@@ -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");

diff --git a/drivers/clocksource/clksrc-of.c b/drivers/clocksource/clksrc-of.c
index bdabdaa8d00f25be231804459f0e867f79045978..3ef11fba781c7701c15f47e90fda99b422fd96d5 100644 (file)
--- a/drivers/clocksource/clksrc-of.c
+++ b/drivers/clocksource/clksrc-of.c
@@ -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);
        }
 }

diff --git a/drivers/clocksource/tegra20_timer.c b/drivers/clocksource/tegra20_timer.c
index 0bde03feb095365602af6fe0239a5d13b26181b3..b3396ab15f635a2ea8bbda666d5c9662e4329158 100644 (file)
--- a/drivers/clocksource/tegra20_timer.c
+++ b/drivers/clocksource/tegra20_timer.c
@@ -164,9 +164,8 @@ static const struct of_device_id rtc_match[] __initconst = {
        {}
 };
 
-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;

diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c
index 8efc86b5b5ddfe3b216acf331c37003776a06b9f..242255285597c605306cc45e89288db52d0921cd 100644 (file)
--- a/drivers/clocksource/vt8500_timer.c
+++ b/drivers/clocksource/vt8500_timer.c
@@ -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",