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authorLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 13:53:43 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-08-01 13:53:43 -0400
commit00e9028a95fb8a4d79f2fb695a853f33ea7d3b57 (patch)
tree2dea2ae498a6ce57de8890e87185aca5e9f3ad2d /arch/sh/boards/mach-landisk/psw.c
parent57b1494d2ba544c62673234da6115c21fac27ffc (diff)
parent7cb93181629c613ee2b8f4ffe3446f8003074842 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (28 commits) mm/hugetlb.c must #include <asm/io.h> video: Fix up hp6xx driver build regressions. sh: defconfig updates. sh: Kill off stray mach-rsk7203 reference. serial: sh-sci: Fix up SH7760/SH7780/SH7785 early printk regression. sh: Move out individual boards without mach groups. sh: Make sure AT_SYSINFO_EHDR is exposed to userspace in asm/auxvec.h. sh: Allow SH-3 and SH-5 to use common headers. sh: Provide common CPU headers, prune the SH-2 and SH-2A directories. sh/maple: clean maple bus code sh: More header path fixups for mach dir refactoring. sh: Move out the solution engine headers to arch/sh/include/mach-se/ sh: I2C fix for AP325RXA and Migo-R sh: Shuffle the board directories in to mach groups. sh: dma-sh: Fix up dreamcast dma.h mach path. sh: Switch KBUILD_DEFCONFIG to shx3_defconfig. sh: Add ARCH_DEFCONFIG entries for sh and sh64. sh: Fix compile error of Solution Engine sh: Proper __put_user_asm() size mismatch fix. sh: Stub in a dummy ENTRY_OFFSET for uImage offset calculation. ...
Diffstat (limited to 'arch/sh/boards/mach-landisk/psw.c')
-rw-r--r--arch/sh/boards/mach-landisk/psw.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-landisk/psw.c b/arch/sh/boards/mach-landisk/psw.c
new file mode 100644
index 000000000000..e6b0efa098d1
--- /dev/null
+++ b/arch/sh/boards/mach-landisk/psw.c
@@ -0,0 +1,143 @@
1/*
2 * arch/sh/boards/landisk/psw.c
3 *
4 * push switch support for LANDISK and USL-5P
5 *
6 * Copyright (C) 2006-2007 Paul Mundt
7 * Copyright (C) 2007 kogiidena
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file "COPYING" in the main directory of this archive
11 * for more details.
12 */
13#include <linux/io.h>
14#include <linux/init.h>
15#include <linux/interrupt.h>
16#include <linux/platform_device.h>
17#include <mach-landisk/mach/iodata_landisk.h>
18#include <asm/push-switch.h>
19
20static irqreturn_t psw_irq_handler(int irq, void *arg)
21{
22 struct platform_device *pdev = arg;
23 struct push_switch *psw = platform_get_drvdata(pdev);
24 struct push_switch_platform_info *psw_info = pdev->dev.platform_data;
25 unsigned int sw_value;
26 int ret = 0;
27
28 sw_value = (0x0ff & (~ctrl_inb(PA_STATUS)));
29
30 /* Nothing to do if there's no state change */
31 if (psw->state) {
32 ret = 1;
33 goto out;
34 }
35
36 /* Figure out who raised it */
37 if (sw_value & (1 << psw_info->bit)) {
38 psw->state = 1;
39 mod_timer(&psw->debounce, jiffies + 50);
40 ret = 1;
41 }
42
43out:
44 /* Clear the switch IRQs */
45 ctrl_outb(0x00, PA_PWRINT_CLR);
46
47 return IRQ_RETVAL(ret);
48}
49
50static struct resource psw_power_resources[] = {
51 [0] = {
52 .start = IRQ_POWER,
53 .flags = IORESOURCE_IRQ,
54 },
55};
56
57static struct resource psw_usl5p_resources[] = {
58 [0] = {
59 .start = IRQ_BUTTON,
60 .flags = IORESOURCE_IRQ,
61 },
62};
63
64static struct push_switch_platform_info psw_power_platform_data = {
65 .name = "psw_power",
66 .bit = 4,
67 .irq_flags = IRQF_SHARED,
68 .irq_handler = psw_irq_handler,
69};
70
71static struct push_switch_platform_info psw1_platform_data = {
72 .name = "psw1",
73 .bit = 0,
74 .irq_flags = IRQF_SHARED,
75 .irq_handler = psw_irq_handler,
76};
77
78static struct push_switch_platform_info psw2_platform_data = {
79 .name = "psw2",
80 .bit = 2,
81 .irq_flags = IRQF_SHARED,
82 .irq_handler = psw_irq_handler,
83};
84
85static struct push_switch_platform_info psw3_platform_data = {
86 .name = "psw3",
87 .bit = 1,
88 .irq_flags = IRQF_SHARED,
89 .irq_handler = psw_irq_handler,
90};
91
92static struct platform_device psw_power_switch_device = {
93 .name = "push-switch",
94 .id = 0,
95 .num_resources = ARRAY_SIZE(psw_power_resources),
96 .resource = psw_power_resources,
97 .dev = {
98 .platform_data = &psw_power_platform_data,
99 },
100};
101
102static struct platform_device psw1_switch_device = {
103 .name = "push-switch",
104 .id = 1,
105 .num_resources = ARRAY_SIZE(psw_usl5p_resources),
106 .resource = psw_usl5p_resources,
107 .dev = {
108 .platform_data = &psw1_platform_data,
109 },
110};
111
112static struct platform_device psw2_switch_device = {
113 .name = "push-switch",
114 .id = 2,
115 .num_resources = ARRAY_SIZE(psw_usl5p_resources),
116 .resource = psw_usl5p_resources,
117 .dev = {
118 .platform_data = &psw2_platform_data,
119 },
120};
121
122static struct platform_device psw3_switch_device = {
123 .name = "push-switch",
124 .id = 3,
125 .num_resources = ARRAY_SIZE(psw_usl5p_resources),
126 .resource = psw_usl5p_resources,
127 .dev = {
128 .platform_data = &psw3_platform_data,
129 },
130};
131
132static struct platform_device *psw_devices[] = {
133 &psw_power_switch_device,
134 &psw1_switch_device,
135 &psw2_switch_device,
136 &psw3_switch_device,
137};
138
139static int __init psw_init(void)
140{
141 return platform_add_devices(psw_devices, ARRAY_SIZE(psw_devices));
142}
143module_init(psw_init);