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-rw-r--r--arch/sh/kernel/pm.c88
1 files changed, 0 insertions, 88 deletions
diff --git a/arch/sh/kernel/pm.c b/arch/sh/kernel/pm.c
deleted file mode 100644
index 10ab62c9aed..00000000000
--- a/arch/sh/kernel/pm.c
+++ /dev/null
@@ -1,88 +0,0 @@
1/*
2 * Generic Power Management Routine
3 *
4 * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License.
8 */
9#include <linux/suspend.h>
10#include <linux/delay.h>
11#include <linux/gfp.h>
12#include <asm/freq.h>
13#include <asm/io.h>
14#include <asm/watchdog.h>
15#include <asm/pm.h>
16
17#define INTR_OFFSET 0x600
18
19#define STBCR 0xffffff82
20#define STBCR2 0xffffff88
21
22#define STBCR_STBY 0x80
23#define STBCR_MSTP2 0x04
24
25#define MCR 0xffffff68
26#define RTCNT 0xffffff70
27
28#define MCR_RMODE 2
29#define MCR_RFSH 4
30
31void pm_enter(void)
32{
33 u8 stbcr, csr;
34 u16 frqcr, mcr;
35 u32 vbr_new, vbr_old;
36
37 set_bl_bit();
38
39 /* set wdt */
40 csr = sh_wdt_read_csr();
41 csr &= ~WTCSR_TME;
42 csr |= WTCSR_CKS_4096;
43 sh_wdt_write_csr(csr);
44 csr = sh_wdt_read_csr();
45 sh_wdt_write_cnt(0);
46
47 /* disable PLL1 */
48 frqcr = ctrl_inw(FRQCR);
49 frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
50 ctrl_outw(frqcr, FRQCR);
51
52 /* enable standby */
53 stbcr = ctrl_inb(STBCR);
54 ctrl_outb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
55
56 /* set self-refresh */
57 mcr = ctrl_inw(MCR);
58 ctrl_outw(mcr & ~MCR_RFSH, MCR);
59
60 /* set interrupt handler */
61 asm volatile("stc vbr, %0" : "=r" (vbr_old));
62 vbr_new = get_zeroed_page(GFP_ATOMIC);
63 udelay(50);
64 memcpy((void*)(vbr_new + INTR_OFFSET),
65 &wakeup_start, &wakeup_end - &wakeup_start);
66 asm volatile("ldc %0, vbr" : : "r" (vbr_new));
67
68 ctrl_outw(0, RTCNT);
69 ctrl_outw(mcr | MCR_RFSH | MCR_RMODE, MCR);
70
71 cpu_sleep();
72
73 asm volatile("ldc %0, vbr" : : "r" (vbr_old));
74
75 free_page(vbr_new);
76
77 /* enable PLL1 */
78 frqcr = ctrl_inw(FRQCR);
79 frqcr |= FRQCR_PSTBY;
80 ctrl_outw(frqcr, FRQCR);
81 udelay(50);
82 frqcr |= FRQCR_PLLEN;
83 ctrl_outw(frqcr, FRQCR);
84
85 ctrl_outb(stbcr, STBCR);
86
87 clear_bl_bit();
88}