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authorLinus Walleij <linus.walleij@linaro.org>2013-03-19 15:36:12 +0100
committerLinus Walleij <linus.walleij@linaro.org>2013-04-08 13:57:53 +0200
commit1e22a8c614a5d8c29d0882de21ce327673b71fca (patch)
treedf7f070611f123bd6e1c0cf47f8888f8aeac3d67 /arch/arm/mach-ux500/cpu.c
parentb047d98127ccbf9fe83b6192a3562b3ead0b2415 (diff)
downloadlinux-linaro-stable-1e22a8c614a5d8c29d0882de21ce327673b71fca.tar.gz
ARM: ux500: move PM-related PRCMU functions to machine
We are trying to decompose and decentralize the code in the DB8500 PRCMU out into subdrivers. The code moved in this patch concerns a group of functions used for decoupling and recoupling the IRQs from the GIC. During sleep and idle the Ux500 system will transfer all IRQ handling to the PRCMU using these functions. Basically we are left with the two alternatives of code placement as: - arch/arm/mach-ux500/pm.c - this because the code is closely related to the GIC, and takes ownership of some of the registers from the PRCMU related to this PM functionality. - drivers/mfd/db8500-prcmu-pm.c - because the code is affecting stuff in the PRCMU register range. But then this code needs to remap and handle GIC registers. This patch implementation is taking the first approach. Currently the cpuidle driver is the only piece of code using this set of functions, but it will later also be used by the suspend/resume code which is currently under review. The header file is moved to: <linux/platform_data/arm-ux500-pm.h> The function prototypes need to be placed in a globally visible header since the CPUidle code is planned to move out to drivers/cpuidle. Acked-by: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Rickard Andersson <rickard.andersson@stericsson.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-ux500/cpu.c')
-rw-r--r--arch/arm/mach-ux500/cpu.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c
index 6f8e152226e3..2c5c48baa3eb 100644
--- a/arch/arm/mach-ux500/cpu.c
+++ b/arch/arm/mach-ux500/cpu.c
@@ -20,6 +20,7 @@
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
#include <linux/platform_data/clk-ux500.h>
+#include <linux/platform_data/arm-ux500-pm.h>
#include <asm/mach/map.h>
@@ -68,12 +69,15 @@ void __init ux500_init_irq(void)
*/
if (cpu_is_u8500_family()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
+ ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
u8500_clk_init();
} else if (cpu_is_u9540()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
+ ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
u8500_clk_init();
} else if (cpu_is_u8540()) {
prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
+ ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
u8540_clk_init();
}
}