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authorArnd Bergmann <arnd@arndb.de>2019-09-08 23:33:51 +0300
committerArnd Bergmann <arnd@arndb.de>2022-04-19 22:33:57 +0300
commite86bd43bcfc579cf8935c1913e92cb76b4ba81c2 (patch)
treed4973a357656f2ab6af07a4d07c86b6acd389a3c /arch/arm/mach-pxa
parentee84cbd5df2beaf14e8af0955f1ab15ad3f81504 (diff)
downloadlinux-e86bd43bcfc579cf8935c1913e92cb76b4ba81c2.tar.xz
watchdog: sa1100: use platform device registration
Rather than relying on machine specific headers to pass down the reboot status and the register locations, use resources and platform_data. Aside from this, keep the changes to a minimum. Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: linux-watchdog@vger.kernel.org Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/devices.c11
-rw-r--r--arch/arm/mach-pxa/include/mach/regs-ost.h2
-rw-r--r--arch/arm/mach-pxa/include/mach/reset.h2
-rw-r--r--arch/arm/mach-pxa/pxa25x.c2
-rw-r--r--arch/arm/mach-pxa/pxa27x.c2
-rw-r--r--arch/arm/mach-pxa/pxa3xx.c2
-rw-r--r--arch/arm/mach-pxa/reset.c3
7 files changed, 17 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index 454523237c97..12f78636045f 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -24,6 +24,8 @@
#include <linux/platform_data/mmp_dma.h>
#include <linux/platform_data/mtd-nand-pxa3xx.h>
+#include <mach/regs-ost.h>
+#include <mach/reset.h>
#include "devices.h"
#include "generic.h"
@@ -1118,3 +1120,12 @@ void __init pxa2xx_set_dmac_info(struct mmp_dma_platdata *dma_pdata)
{
pxa_register_device(&pxa2xx_pxa_dma, dma_pdata);
}
+
+void __init pxa_register_wdt(unsigned int reset_status)
+{
+ struct resource res = DEFINE_RES_MEM(OST_PHYS, OST_LEN);
+
+ reset_status &= RESET_STATUS_WATCHDOG;
+ platform_device_register_resndata(NULL, "sa1100_wdt", -1, &res, 1,
+ &reset_status, sizeof(reset_status));
+}
diff --git a/arch/arm/mach-pxa/include/mach/regs-ost.h b/arch/arm/mach-pxa/include/mach/regs-ost.h
index 109d0ed264df..c8001cfc8d6b 100644
--- a/arch/arm/mach-pxa/include/mach/regs-ost.h
+++ b/arch/arm/mach-pxa/include/mach/regs-ost.h
@@ -7,6 +7,8 @@
/*
* OS Timer & Match Registers
*/
+#define OST_PHYS 0x40A00000
+#define OST_LEN 0x00000020
#define OSMR0 io_p2v(0x40A00000) /* */
#define OSMR1 io_p2v(0x40A00004) /* */
diff --git a/arch/arm/mach-pxa/include/mach/reset.h b/arch/arm/mach-pxa/include/mach/reset.h
index e1c4d100fd45..963dd190bc13 100644
--- a/arch/arm/mach-pxa/include/mach/reset.h
+++ b/arch/arm/mach-pxa/include/mach/reset.h
@@ -8,8 +8,8 @@
#define RESET_STATUS_GPIO (1 << 3) /* GPIO Reset */
#define RESET_STATUS_ALL (0xf)
-extern unsigned int reset_status;
extern void clear_reset_status(unsigned int mask);
+extern void pxa_register_wdt(unsigned int reset_status);
/**
* init_gpio_reset() - register GPIO as reset generator
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index 305047ebd2f1..dfc90b41fba3 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -240,7 +240,7 @@ static int __init pxa25x_init(void)
if (cpu_is_pxa25x()) {
- reset_status = RCSR;
+ pxa_register_wdt(RCSR);
pxa25x_init_pm();
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index a81ac88ecbfd..38fdd22c4dc5 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -337,7 +337,7 @@ static int __init pxa27x_init(void)
if (cpu_is_pxa27x()) {
- reset_status = RCSR;
+ pxa_register_wdt(RCSR);
pxa27x_init_pm();
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index fc84aed99481..7c569fa2a6da 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -463,7 +463,7 @@ static int __init pxa3xx_init(void)
if (cpu_is_pxa3xx()) {
- reset_status = ARSR;
+ pxa_register_wdt(ARSR);
/*
* clear RDH bit every time after reset
diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c
index af78405aa4e9..fcb791c5ae3e 100644
--- a/arch/arm/mach-pxa/reset.c
+++ b/arch/arm/mach-pxa/reset.c
@@ -11,9 +11,6 @@
#include <mach/reset.h>
#include <mach/smemc.h>
-unsigned int reset_status;
-EXPORT_SYMBOL(reset_status);
-
static void do_hw_reset(void);
static int reset_gpio = -1;