aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-at91/pm.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:03:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:03:32 -0700
commitd61b7a572b292e2be409e13b4b3adf475f18fb29 (patch)
treee9d30390860147136c05e66abf1edda1bc5b0562 /arch/arm/mach-at91/pm.h
parent18d9946bc7e2252fe3c0f2f609ac383c627edefd (diff)
parentf4e2467bad53023589cbff18dd1ab6e0aa3f004c (diff)
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: global cleanups" from Arnd Bergmann: "Quite a bit of code gets removed, and some stuff moved around, mostly the old samsung s3c24xx stuff. There should be no functional changes in this series otherwise. Some cleanups have dependencies on other arm-soc branches and will be sent in the second round. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fixed up trivial conflicts mainly due to #include's being changes on both sides. * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (121 commits) ep93xx: Remove unnecessary includes of ep93xx-regs.h ep93xx: Move EP93XX_SYSCON defines to SoC private header ep93xx: Move crunch code to mach-ep93xx directory ep93xx: Make syscon access functions private to SoC ep93xx: Configure GPIO ports in core code ep93xx: Move peripheral defines to local SoC header ep93xx: Convert the watchdog driver into a platform device. ep93xx: Use ioremap for backlight driver ep93xx: Move GPIO defines to gpio-ep93xx.h ep93xx: Don't use system controller defines in audio drivers ep93xx: Move PHYS_BASE defines to local SoC header file ARM: EXYNOS: Add clock register addresses for EXYNOS4X12 bus devfreq driver ARM: EXYNOS: add clock registers for exynos4x12-cpufreq PM / devfreq: update the name of EXYNOS clock registers that were omitted PM / devfreq: update the name of EXYNOS clock register ARM: EXYNOS: change the prefix S5P_ to EXYNOS4_ for clock ARM: EXYNOS: use static declaration on regarding clock ARM: EXYNOS: replace clock.c for other new EXYNOS SoCs ARM: OMAP2+: Fix build error after merge ARM: S3C24XX: remove call to s3c24xx_setup_clocks ...
Diffstat (limited to 'arch/arm/mach-at91/pm.h')
-rw-r--r--arch/arm/mach-at91/pm.h91
1 files changed, 47 insertions, 44 deletions
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index 7eb40d24242..bba9ce1aaae 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -1,3 +1,16 @@
+/*
+ * AT91 Power Management
+ *
+ * Copyright (C) 2005 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#ifndef __ARCH_ARM_MACH_AT91_PM
+#define __ARCH_ARM_MACH_AT91_PM
+
#ifdef CONFIG_ARCH_AT91RM9200
#include <mach/at91rm9200_mc.h>
@@ -11,36 +24,25 @@
* still in self-refresh is "not recommended", but seems to work.
*/
-static inline u32 sdram_selfrefresh_enable(void)
-{
- u32 saved_lpr = at91_sys_read(AT91_SDRAMC_LPR);
-
- at91_sys_write(AT91_SDRAMC_LPR, 0);
- at91_sys_write(AT91_SDRAMC_SRR, 1);
- return saved_lpr;
-}
-
-#define sdram_selfrefresh_disable(saved_lpr) at91_sys_write(AT91_SDRAMC_LPR, saved_lpr)
-#define wait_for_interrupt_enable() asm volatile ("mcr p15, 0, %0, c7, c0, 4" \
- : : "r" (0))
-
-#elif defined(CONFIG_ARCH_AT91CAP9)
-#include <mach/at91sam9_ddrsdr.h>
-
-
-static inline u32 sdram_selfrefresh_enable(void)
+static inline void at91rm9200_standby(void)
{
- u32 saved_lpr, lpr;
-
- saved_lpr = at91_ramc_read(0, AT91CAP9_DDRSDRC_LPR);
-
- lpr = saved_lpr & ~AT91_DDRSDRC_LPCB;
- at91_ramc_write(0, AT91CAP9_DDRSDRC_LPR, lpr | AT91_DDRSDRC_LPCB_SELF_REFRESH);
- return saved_lpr;
+ u32 lpr = at91_sys_read(AT91_SDRAMC_LPR);
+
+ asm volatile(
+ "b 1f\n\t"
+ ".align 5\n\t"
+ "1: mcr p15, 0, %0, c7, c10, 4\n\t"
+ " str %0, [%1, %2]\n\t"
+ " str %3, [%1, %4]\n\t"
+ " mcr p15, 0, %0, c7, c0, 4\n\t"
+ " str %5, [%1, %2]"
+ :
+ : "r" (0), "r" (AT91_BASE_SYS), "r" (AT91_SDRAMC_LPR),
+ "r" (1), "r" (AT91_SDRAMC_SRR),
+ "r" (lpr));
}
-#define sdram_selfrefresh_disable(saved_lpr) at91_ramc_write(0, AT91CAP9_DDRSDRC_LPR, saved_lpr)
-#define wait_for_interrupt_enable() cpu_do_idle()
+#define at91_standby at91rm9200_standby
#elif defined(CONFIG_ARCH_AT91SAM9G45)
#include <mach/at91sam9_ddrsdr.h>
@@ -48,14 +50,12 @@ static inline u32 sdram_selfrefresh_enable(void)
/* We manage both DDRAM/SDRAM controllers, we need more than one value to
* remember.
*/
-static u32 saved_lpr1;
-
-static inline u32 sdram_selfrefresh_enable(void)
+static inline void at91sam9g45_standby(void)
{
- /* Those tow values allow us to delay self-refresh activation
+ /* Those two values allow us to delay self-refresh activation
* to the maximum. */
u32 lpr0, lpr1;
- u32 saved_lpr0;
+ u32 saved_lpr0, saved_lpr1;
saved_lpr1 = at91_ramc_read(1, AT91_DDRSDRC_LPR);
lpr1 = saved_lpr1 & ~AT91_DDRSDRC_LPCB;
@@ -69,15 +69,13 @@ static inline u32 sdram_selfrefresh_enable(void)
at91_ramc_write(0, AT91_DDRSDRC_LPR, lpr0);
at91_ramc_write(1, AT91_DDRSDRC_LPR, lpr1);
- return saved_lpr0;
+ cpu_do_idle();
+
+ at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0);
+ at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
}
-#define sdram_selfrefresh_disable(saved_lpr0) \
- do { \
- at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0); \
- at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1); \
- } while (0)
-#define wait_for_interrupt_enable() cpu_do_idle()
+#define at91_standby at91sam9g45_standby
#else
#include <mach/at91sam9_sdramc.h>
@@ -90,18 +88,23 @@ static inline u32 sdram_selfrefresh_enable(void)
#warning Assuming EB1 SDRAM controller is *NOT* used
#endif
-static inline u32 sdram_selfrefresh_enable(void)
+static inline void at91sam9_standby(void)
{
u32 saved_lpr, lpr;
saved_lpr = at91_ramc_read(0, AT91_SDRAMC_LPR);
lpr = saved_lpr & ~AT91_SDRAMC_LPCB;
- at91_ramc_write(0, AT91_SDRAMC_LPR, lpr | AT91_SDRAMC_LPCB_SELF_REFRESH);
- return saved_lpr;
+ at91_ramc_write(0, AT91_SDRAMC_LPR, lpr |
+ AT91_SDRAMC_LPCB_SELF_REFRESH);
+
+ cpu_do_idle();
+
+ at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr);
}
-#define sdram_selfrefresh_disable(saved_lpr) at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr)
-#define wait_for_interrupt_enable() cpu_do_idle()
+#define at91_standby at91sam9_standby
+
+#endif
#endif