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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 14:51:39 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-12 14:51:39 -0500
commitd01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (patch)
tree02ef82b2740cf93a98199eded5ef765fa6e03052 /arch/arm/mach-omap2/wd_timer.c
parent8287361abca36504da813638310d2547469283eb (diff)
parent794b175fc0c0c4844dbb7b137a73bbfd01f6c608 (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups on various subarchitectures from Olof Johansson: "Cleanup patches for various ARM platforms and some of their associated drivers. There's also a branch in here that enables Freescale i.MX to be part of the multiplatform support -- the first "big" SoC that is moved over (more multiplatform work comes in a separate branch later during the merge window)." Conflicts fixed as per Olof, including a silent semantic one in arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to omap3xxx_restart(), and a new user of the old name was added). * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits) ARM: omap: fix typo on timer cleanup ARM: EXYNOS: Remove unused regs-mem.h file ARM: EXYNOS: Remove unused non-dt support for dwmci controller ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan ARM: OMAP3: cm-t3517: use GPTIMER for system clock ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER ARM: SAMSUNG: use devm_ functions for ADC driver ARM: EXYNOS: no duplicate mask/unmask in eint0_15 ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443 ARM: EXYNOS: Remove i2c0 resource information and setting of device names ARM: Kirkwood: checkpatch cleanups ARM: Kirkwood: Fix sparse warnings. ARM: Kirkwood: Remove unused includes ARM: kirkwood: cleanup lsxl board includes ARM: integrator: use BUG_ON where possible ARM: integrator: push down SC dependencies ARM: integrator: delete static UART1 mapping ARM: integrator: delete SC mapping on the CP ARM: integrator: remove static CP syscon mapping ARM: integrator: remove static AP syscon mapping ...
Diffstat (limited to 'arch/arm/mach-omap2/wd_timer.c')
-rw-r--r--arch/arm/mach-omap2/wd_timer.c40
1 files changed, 36 insertions, 4 deletions
diff --git a/arch/arm/mach-omap2/wd_timer.c b/arch/arm/mach-omap2/wd_timer.c
index f6b6c37ac3f4..7c2b4ed38f02 100644
--- a/arch/arm/mach-omap2/wd_timer.c
+++ b/arch/arm/mach-omap2/wd_timer.c
@@ -1,6 +1,8 @@
1/* 1/*
2 * OMAP2+ MPU WD_TIMER-specific code 2 * OMAP2+ MPU WD_TIMER-specific code
3 * 3 *
4 * Copyright (C) 2012 Texas Instruments, Inc.
5 *
4 * This program is free software; you can redistribute it and/or modify 6 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by 7 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or 8 * the Free Software Foundation; either version 2 of the License, or
@@ -11,10 +13,14 @@
11#include <linux/io.h> 13#include <linux/io.h>
12#include <linux/err.h> 14#include <linux/err.h>
13 15
14#include "omap_hwmod.h" 16#include <linux/platform_data/omap-wd-timer.h>
15 17
18#include "omap_hwmod.h"
19#include "omap_device.h"
16#include "wd_timer.h" 20#include "wd_timer.h"
17#include "common.h" 21#include "common.h"
22#include "prm.h"
23#include "soc.h"
18 24
19/* 25/*
20 * In order to avoid any assumptions from bootloader regarding WDT 26 * In order to avoid any assumptions from bootloader regarding WDT
@@ -26,9 +32,6 @@
26#define OMAP_WDT_WPS 0x34 32#define OMAP_WDT_WPS 0x34
27#define OMAP_WDT_SPR 0x48 33#define OMAP_WDT_SPR 0x48
28 34
29/* Maximum microseconds to wait for OMAP module to softreset */
30#define MAX_MODULE_SOFTRESET_WAIT 10000
31
32int omap2_wd_timer_disable(struct omap_hwmod *oh) 35int omap2_wd_timer_disable(struct omap_hwmod *oh)
33{ 36{
34 void __iomem *base; 37 void __iomem *base;
@@ -99,3 +102,32 @@ int omap2_wd_timer_reset(struct omap_hwmod *oh)
99 return (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT : 102 return (c == MAX_MODULE_SOFTRESET_WAIT) ? -ETIMEDOUT :
100 omap2_wd_timer_disable(oh); 103 omap2_wd_timer_disable(oh);
101} 104}
105
106static int __init omap_init_wdt(void)
107{
108 int id = -1;
109 struct platform_device *pdev;
110 struct omap_hwmod *oh;
111 char *oh_name = "wd_timer2";
112 char *dev_name = "omap_wdt";
113 struct omap_wd_timer_platform_data pdata;
114
115 if (!cpu_class_is_omap2() || of_have_populated_dt())
116 return 0;
117
118 oh = omap_hwmod_lookup(oh_name);
119 if (!oh) {
120 pr_err("Could not look up wd_timer%d hwmod\n", id);
121 return -EINVAL;
122 }
123
124 pdata.read_reset_sources = prm_read_reset_sources;
125
126 pdev = omap_device_build(dev_name, id, oh, &pdata,
127 sizeof(struct omap_wd_timer_platform_data),
128 NULL, 0, 0);
129 WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
130 dev_name, oh->name);
131 return 0;
132}
133subsys_initcall(omap_init_wdt);