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authorPaul Walmsley <paul@pwsan.com>2012-10-21 01:01:11 -0600
committerPaul Walmsley <paul@pwsan.com>2012-10-21 01:01:11 -0600
commit4bd5259e53accda0fe295d3b25da348f4d5f4b09 (patch)
tree6ddacb5a75a8eda93916eaa917775ac36b561b81 /arch/arm/mach-omap2/prm2xxx_3xxx.c
parentff4ae5d9319b86f940e410e92659c50f9879ff46 (diff)
ARM: OMAP2/3: clockdomain/PRM/CM: move the low-level clockdomain functions into PRM/CM
Move the low-level SoC-specific clockdomain control functions into cm*.c and prm*.c. For example, OMAP2xxx low-level clockdomain functions go into cm2xxx.c. Then remove the unnecessary clockdomain*xxx*.c files. The objective is to centralize low-level CM and PRM register accesses into the cm*.[ch] and prm*.[ch] files, and then to export an OMAP SoC-independent API to higher-level OMAP power management code. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Rajendra Nayak <rnayak@ti.com> Cc: Vaibhav Hiremath <hvaibhav@ti.com> Acked-by: Rajendra Nayak <rnayak@ti.com> Reviewed-by: Russ Dill <Russ.Dill@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2/prm2xxx_3xxx.c')
-rw-r--r--arch/arm/mach-omap2/prm2xxx_3xxx.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c
index bdddf5ca67c..30517f5af70 100644
--- a/arch/arm/mach-omap2/prm2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c
@@ -20,6 +20,7 @@
#include "powerdomain.h"
#include "prm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
+#include "clockdomain.h"
/**
* omap2_prm_is_hardreset_asserted - read the HW reset line state of
@@ -208,3 +209,45 @@ int omap2_pwrdm_wait_transition(struct powerdomain *pwrdm)
return 0;
}
+int omap2_clkdm_add_wkdep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ omap2_prm_set_mod_reg_bits((1 << clkdm2->dep_bit),
+ clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP);
+ return 0;
+}
+
+int omap2_clkdm_del_wkdep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ omap2_prm_clear_mod_reg_bits((1 << clkdm2->dep_bit),
+ clkdm1->pwrdm.ptr->prcm_offs, PM_WKDEP);
+ return 0;
+}
+
+int omap2_clkdm_read_wkdep(struct clockdomain *clkdm1,
+ struct clockdomain *clkdm2)
+{
+ return omap2_prm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs,
+ PM_WKDEP, (1 << clkdm2->dep_bit));
+}
+
+int omap2_clkdm_clear_all_wkdeps(struct clockdomain *clkdm)
+{
+ struct clkdm_dep *cd;
+ u32 mask = 0;
+
+ for (cd = clkdm->wkdep_srcs; cd && cd->clkdm_name; cd++) {
+ if (!cd->clkdm)
+ continue; /* only happens if data is erroneous */
+
+ /* PRM accesses are slow, so minimize them */
+ mask |= 1 << cd->clkdm->dep_bit;
+ atomic_set(&cd->wkdep_usecount, 0);
+ }
+
+ omap2_prm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs,
+ PM_WKDEP);
+ return 0;
+}
+