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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2015-03-16 23:44:37 +0100
committerNicolas Ferre <nicolas.ferre@atmel.com>2015-04-05 21:59:51 +0200
commita18d0699dd18ba5661c321ebd67e6056656b6765 (patch)
tree131281f6c0a20c7dc7d7d6296193ff19ed66b152 /arch/arm/mach-at91/pm.h
parent176a1b3dadf08835b9435bed4957daa066702a39 (diff)
ARM: at91/pm: move the standby functions to pm.c
The standby functions are now only used in pm.c, move them there. Also, they are not inlined as a pointer to those functions is passed to the cpuidle driver. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'arch/arm/mach-at91/pm.h')
-rw-r--r--arch/arm/mach-at91/pm.h92
1 files changed, 0 insertions, 92 deletions
diff --git a/arch/arm/mach-at91/pm.h b/arch/arm/mach-at91/pm.h
index dcacfa1ad3fa..3223967d3460 100644
--- a/arch/arm/mach-at91/pm.h
+++ b/arch/arm/mach-at91/pm.h
@@ -23,96 +23,4 @@
#define AT91_PM_SLOW_CLOCK 0x01
-/*
- * The AT91RM9200 goes into self-refresh mode with this command, and will
- * terminate self-refresh automatically on the next SDRAM access.
- *
- * Self-refresh mode is exited as soon as a memory access is made, but we don't
- * know for sure when that happens. However, we need to restore the low-power
- * mode if it was enabled before going idle. Restoring low-power mode while
- * still in self-refresh is "not recommended", but seems to work.
- */
-
-#ifndef __ASSEMBLY__
-static inline void at91rm9200_standby(void)
-{
- u32 lpr = at91_ramc_read(0, AT91RM9200_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_ramc_base[0]), "r" (AT91RM9200_SDRAMC_LPR),
- "r" (1), "r" (AT91RM9200_SDRAMC_SRR),
- "r" (lpr));
-}
-
-/* We manage both DDRAM/SDRAM controllers, we need more than one value to
- * remember.
- */
-static inline void at91_ddr_standby(void)
-{
- /* Those two values allow us to delay self-refresh activation
- * to the maximum. */
- u32 lpr0, lpr1 = 0;
- u32 saved_lpr0, saved_lpr1 = 0;
-
- if (at91_ramc_base[1]) {
- saved_lpr1 = at91_ramc_read(1, AT91_DDRSDRC_LPR);
- lpr1 = saved_lpr1 & ~AT91_DDRSDRC_LPCB;
- lpr1 |= AT91_DDRSDRC_LPCB_SELF_REFRESH;
- }
-
- saved_lpr0 = at91_ramc_read(0, AT91_DDRSDRC_LPR);
- lpr0 = saved_lpr0 & ~AT91_DDRSDRC_LPCB;
- lpr0 |= AT91_DDRSDRC_LPCB_SELF_REFRESH;
-
- /* self-refresh mode now */
- at91_ramc_write(0, AT91_DDRSDRC_LPR, lpr0);
- if (at91_ramc_base[1])
- at91_ramc_write(1, AT91_DDRSDRC_LPR, lpr1);
-
- cpu_do_idle();
-
- at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
- at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
-}
-
-/* We manage both DDRAM/SDRAM controllers, we need more than one value to
- * remember.
- */
-static inline void at91sam9_sdram_standby(void)
-{
- u32 lpr0, lpr1 = 0;
- u32 saved_lpr0, saved_lpr1 = 0;
-
- if (at91_ramc_base[1]) {
- saved_lpr1 = at91_ramc_read(1, AT91_SDRAMC_LPR);
- lpr1 = saved_lpr1 & ~AT91_SDRAMC_LPCB;
- lpr1 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
- }
-
- saved_lpr0 = at91_ramc_read(0, AT91_SDRAMC_LPR);
- lpr0 = saved_lpr0 & ~AT91_SDRAMC_LPCB;
- lpr0 |= AT91_SDRAMC_LPCB_SELF_REFRESH;
-
- /* self-refresh mode now */
- at91_ramc_write(0, AT91_SDRAMC_LPR, lpr0);
- if (at91_ramc_base[1])
- at91_ramc_write(1, AT91_SDRAMC_LPR, lpr1);
-
- cpu_do_idle();
-
- at91_ramc_write(0, AT91_SDRAMC_LPR, saved_lpr0);
- if (at91_ramc_base[1])
- at91_ramc_write(1, AT91_SDRAMC_LPR, saved_lpr1);
-}
-
-#endif
#endif