davinci: pass clock flags to davinci_psc_config()
Enabling or disabling a PSC can take certain
modifiers like "disable with reset", "force
enable/disable" and "enable/disable with local
reset" apart from the regular clock gating
functionality.
Pass a flags argument to davinci_psc_config()
so these variations can be supported there.
At this time only "disable with reset" is
supported, but other functionality will be
added in subsequent patches.
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c
index a415804..823cb1b 100644
--- a/arch/arm/mach-davinci/psc.c
+++ b/arch/arm/mach-davinci/psc.c
@@ -25,6 +25,8 @@
#include <mach/cputype.h>
#include <mach/psc.h>
+#include "clock.h"
+
/* Return nonzero iff the domain's clock is active */
int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id)
{
@@ -48,11 +50,12 @@
/* Enable or disable a PSC domain */
void davinci_psc_config(unsigned int domain, unsigned int ctlr,
- unsigned int id, u32 next_state)
+ unsigned int id, bool enable, u32 flags)
{
u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl;
void __iomem *psc_base;
struct davinci_soc_info *soc_info = &davinci_soc_info;
+ u32 next_state = PSC_STATE_ENABLE;
if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) {
pr_warning("PSC: Bad psc data: 0x%x[%d]\n",
@@ -62,6 +65,13 @@
psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K);
+ if (!enable) {
+ if (flags & PSC_SWRSTDISABLE)
+ next_state = PSC_STATE_SWRSTDISABLE;
+ else
+ next_state = PSC_STATE_DISABLE;
+ }
+
mdctl = __raw_readl(psc_base + MDCTL + 4 * id);
mdctl &= ~MDSTAT_STATE_MASK;
mdctl |= next_state;