diff options
| author | Domen Puncer <domen.puncer@telargo.com> | 2007-05-07 01:38:52 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-07 20:31:15 +1000 |
| commit | 2e1ee1f76684c5d4dd8e5a08cbf22d57f88769ed (patch) | |
| tree | 0c69d52b8fb2cf82f257944d182ce1f8973ab9f9 /arch/powerpc/platforms/52xx/efika.c | |
| parent | a3481197783c187707090504062488862768260a (diff) | |
| download | linux-2e1ee1f76684c5d4dd8e5a08cbf22d57f88769ed.tar.bz2 | |
[POWERPC] mpc52xx suspend to deep-sleep
Implement deep-sleep on MPC52xx.
SDRAM is put into self-refresh with help of SRAM code
(alternatives would be code in FLASH, I-cache).
Interrupt code must also not be in SDRAM, so put it
in I-cache.
MPC52xx core is static, so contents will remain intact even
with clocks turned off.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/52xx/efika.c')
| -rw-r--r-- | arch/powerpc/platforms/52xx/efika.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c index a6bba97314eb..f591a9fc19b9 100644 --- a/arch/powerpc/platforms/52xx/efika.c +++ b/arch/powerpc/platforms/52xx/efika.c @@ -184,6 +184,16 @@ static void efika_show_cpuinfo(struct seq_file *m) of_node_put(root); } +#ifdef CONFIG_PM +static void efika_suspend_prepare(void __iomem *mbar) +{ + u8 pin = 4; /* GPIO_WKUP_4 (GPIO_PSC6_0 - IRDA_RX) */ + u8 level = 1; /* wakeup on high level */ + /* IOW. to wake it up, short pins 1 and 3 on IRDA connector */ + mpc52xx_set_wakeup_gpio(pin, level); +} +#endif + static void __init efika_setup_arch(void) { rtas_initialize(); @@ -199,6 +209,11 @@ static void __init efika_setup_arch(void) efika_pcisetup(); +#ifdef CONFIG_PM + mpc52xx_suspend.board_suspend_prepare = efika_suspend_prepare; + mpc52xx_pm_init(); +#endif + if (ppc_md.progress) ppc_md.progress("Linux/PPC " UTS_RELEASE " running on Efika ;-)\n", 0x0); } |