[PATCH 07/10] add of_iomap function
From: Arnd Bergmann <arnd@arndb.de>
Date: 2007-04-23 19:46:54
From: Christian Krafft <redacted> The of_iomap function maps memory for a given device_node and returns a pointer to that memory. This is used at some places, so it makes sense to a seperate function. Signed-off-by: Christian Krafft <redacted> Signed-off-by: Arnd Bergmann <redacted> Index: linux-2.6/arch/powerpc/sysdev/pmi.c ===================================================================
--- linux-2.6.orig/arch/powerpc/sysdev/pmi.c
+++ linux-2.6/arch/powerpc/sysdev/pmi.c@@ -33,7 +33,7 @@ #include <asm/of_platform.h> #include <asm/io.h> #include <asm/pmi.h> - +#include <asm/prom.h> struct pmi_data { struct list_head handler;
@@ -49,21 +49,6 @@ struct pmi_data { }; - -static void __iomem *of_iomap(struct device_node *np) -{ - struct resource res; - - if (of_address_to_resource(np, 0, &res)) - return NULL; - - pr_debug("Resource start: 0x%lx\n", res.start); - pr_debug("Resource end: 0x%lx\n", res.end); - - return ioremap(res.start, 1 + res.end - res.start); -} - - static int pmi_irq_handler(int irq, void *dev_id) { struct pmi_data *data;
@@ -154,7 +139,7 @@ static int pmi_of_probe(struct of_device goto out; } - data->pmi_reg = of_iomap(np); + data->pmi_reg = of_iomap(np, 0); if (!data->pmi_reg) { printk(KERN_ERR "pmi: invalid register address.\n"); rc = -EFAULT;
Index: linux-2.6/include/asm-powerpc/prom.h ===================================================================
--- linux-2.6.orig/include/asm-powerpc/prom.h
+++ linux-2.6/include/asm-powerpc/prom.h@@ -20,6 +20,7 @@ #include <linux/platform_device.h> #include <asm/irq.h> #include <asm/atomic.h> +#include <asm/io.h> /* Definitions used by the flattened device tree */ #define OF_DT_HEADER 0xd00dfeed /* marker */
@@ -355,6 +356,16 @@ static inline int of_irq_to_resource(str return irq; } +static inline void __iomem *of_iomap(struct device_node *np, int index) +{ + struct resource res; + + if (of_address_to_resource(np, index, &res)) + return NULL; + + return ioremap(res.start, 1 + res.end - res.start); +} + #endif /* __KERNEL__ */ #endif /* _POWERPC_PROM_H */ --