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MIPS: Create a helper function for DT setup 

A couple of platforms register two buses and call of_platform_populate().
Move this into a common function to reduce duplication.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: f.fainelli@gmail.com
Cc: mbizon@freebox.fr
Cc: jogo@openwrt.org
Cc: jfraser@broadcom.com
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8167/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Kevin Cernekee 2014-10-20 21:28:02 -07:00 committed by Ralf Baechle
parent 68e6a78373
commit 84988c0681
4 changed files with 22 additions and 22 deletions
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1
arch/mips/include/asm/prom.h
View File

@ -22,6 +22,7 @@ extern void device_tree_init(void);
struct boot_param_header;
extern void __dt_setup_arch(void *bph);
extern int __dt_register_buses(const char *bus0, const char *bus1);
#define dt_setup_arch(sym) \
({ \

18
arch/mips/kernel/prom.c
View File

@ -16,6 +16,7 @@
#include <linux/debugfs.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <asm/page.h>
#include <asm/prom.h>
@ -54,4 +55,21 @@ void __init __dt_setup_arch(void *bph)
mips_set_machine_name(of_flat_dt_get_machine_name());
}
int __init __dt_register_buses(const char *bus0, const char *bus1)
{
static struct of_device_id of_ids[3];
if (!of_have_populated_dt())
panic("device tree not present");
strlcpy(of_ids[0].compatible, bus0, sizeof(of_ids[0].compatible));
strlcpy(of_ids[1].compatible, bus1, sizeof(of_ids[1].compatible));
if (of_platform_populate(NULL, of_ids, NULL, NULL))
panic("failed to populate DT");
return 0;
}
#endif

11
arch/mips/lantiq/prom.c
View File

@ -97,16 +97,7 @@ void __init prom_init(void)
int __init plat_of_setup(void)
{
static struct of_device_id of_ids[3];
if (!of_have_populated_dt())
panic("device tree not present");
strlcpy(of_ids[0].compatible, soc_info.compatible,
sizeof(of_ids[0].compatible));
strncpy(of_ids[1].compatible, "simple-bus",
sizeof(of_ids[1].compatible));
return of_platform_populate(NULL, of_ids, NULL, NULL);
return __dt_register_buses(soc_info.compatible, "simple-bus");
}
arch_initcall(plat_of_setup);

14
arch/mips/ralink/of.c
View File

@ -74,19 +74,9 @@ void __init plat_mem_setup(void)
static int __init plat_of_setup(void)
{
static struct of_device_id of_ids[3];
int len = sizeof(of_ids[0].compatible);
__dt_register_buses(soc_info.compatible, "palmbus");
if (!of_have_populated_dt())
panic("device tree not present");
strlcpy(of_ids[0].compatible, soc_info.compatible, len);
strlcpy(of_ids[1].compatible, "palmbus", len);
if (of_platform_populate(NULL, of_ids, NULL, NULL))
panic("failed to populate DT");
/* make sure ithat the reset controller is setup early */
/* make sure that the reset controller is setup early */
ralink_rst_init();
return 0;