[ARM] 2787/2: PXA27x low power modes support

Patch from Todd Poynor

Add symbols for PXA2xx PWRMODE register M field that selects low-power
mode, replace unadorned constants.  Honor power mode parameter of
pxa_cpu_suspend(mode), no longer force to 3 (sleep).  Full Deep Sleep
low-power mode support for PXA27x is pending generic PM interfaces to
select more than 2 suspend-to-RAM-style power modes, but this is
expected soon. This can be hardcoded in the meantime by replacing the
pxa_cpu_suspend() parameter value.  From David Burrage and Todd Poynor.
Try #2 removes one of the register copies and moves the code to save the
pxa_cpu_suspend parameter to immediately surround the call that requires
the parameter value be preserved.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

This commit is contained in:

Todd Poynor

2005-10-28 16:25:01 +01:00

committed by

Russell King

parent 917f68f816

commit 80a18573ce

5 changed files with 15 additions and 5 deletions

									
										include/asm-arm/arch-pxa/pxa-regs.h
									
		+7
		
												View File
												
				@@ -2282,4 +2282,11 @@

				#endif

				/* PWRMODE register M field values */

				#define PWRMODE_IDLE		0x1

				#define PWRMODE_STANDBY		0x2

				#define PWRMODE_SLEEP		0x3

				#define PWRMODE_DEEPSLEEP	0x7

				#endif