ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it
prm_features flag will contain SoC specific feature enabler flags. Initially
IO wakeup is added under this. Helps to get rid of runtime cpu_is_X checks.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h
index 623db40..04426c4 100644
--- a/arch/arm/mach-omap2/prm.h
+++ b/arch/arm/mach-omap2/prm.h
@@ -17,10 +17,18 @@
# ifndef __ASSEMBLER__
extern void __iomem *prm_base;
+extern u16 prm_features;
extern void omap2_set_globals_prm(void __iomem *prm);
int of_prcm_init(void);
# endif
+/*
+ * prm_features flag values
+ *
+ * PRM_HAS_IO_WAKEUP: has IO wakeup capability
+ * PRM_HAS_VOLTAGE: has voltage domains
+ */
+#define PRM_HAS_IO_WAKEUP (1 << 0)
/*
* MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
diff --git a/arch/arm/mach-omap2/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index 2631b9f..9c95ac2 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -247,7 +247,7 @@
*/
static void __init omap3xxx_prm_enable_io_wakeup(void)
{
- if (omap3_has_io_wakeup())
+ if (prm_features & PRM_HAS_IO_WAKEUP)
omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD,
PM_WKEN);
}
@@ -407,6 +407,9 @@
int __init omap3xxx_prm_init(void)
{
+ if (omap3_has_io_wakeup())
+ prm_features |= PRM_HAS_IO_WAKEUP;
+
return prm_register(&omap3xxx_prm_ll_data);
}
@@ -417,6 +420,9 @@
if (!cpu_is_omap34xx())
return 0;
+ if (!(prm_features & PRM_HAS_IO_WAKEUP))
+ return 0;
+
omap3xxx_prm_enable_io_wakeup();
ret = omap_prcm_register_chain_handler(&omap3_prcm_irq_setup);
if (!ret)
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c
index f464179..e4e52f1 100644
--- a/arch/arm/mach-omap2/prm44xx.c
+++ b/arch/arm/mach-omap2/prm44xx.c
@@ -661,6 +661,9 @@
int __init omap44xx_prm_init(void)
{
+ if (cpu_is_omap44xx())
+ prm_features |= PRM_HAS_IO_WAKEUP;
+
return prm_register(&omap44xx_prm_ll_data);
}
@@ -669,6 +672,9 @@
if (!cpu_is_omap44xx())
return 0;
+ if (!(prm_features & PRM_HAS_IO_WAKEUP))
+ return 0;
+
omap44xx_prm_enable_io_wakeup();
return omap_prcm_register_chain_handler(&omap4_prcm_irq_setup);
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index bd746fc..aa2550d 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -62,6 +62,8 @@
/* prm_base: base virtual address of the PRM IP block */
void __iomem *prm_base;
+u16 prm_features;
+
/*
* prm_ll_data: function pointers to SoC-specific implementations of
* common PRM functions