ARM: OMAP: Turn CM and PRM access into functions
Otherwise compiling in omap2 and omap3 will not work.
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index 9584376d..fd92a80 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -28,10 +28,9 @@
static void __iomem *prm_base;
static void __iomem *cm_base;
-extern void omap2_clk_prepare_for_reboot(void);
-
u32 omap_prcm_get_reset_sources(void)
{
+ /* XXX This presumably needs modification for 34XX */
return prm_read_mod_reg(WKUP_MOD, RM_RSTST) & 0x7f;
}
EXPORT_SYMBOL(omap_prcm_get_reset_sources);
@@ -39,13 +38,17 @@
/* Resets clock rates and reboots the system. Only called from system.h */
void omap_prcm_arch_reset(char mode)
{
- u32 wkup;
+ s16 prcm_offs;
omap2_clk_prepare_for_reboot();
- if (cpu_is_omap24xx()) {
- wkup = prm_read_mod_reg(WKUP_MOD, RM_RSTCTRL) | OMAP_RST_DPLL3;
- prm_write_mod_reg(wkup, WKUP_MOD, RM_RSTCTRL);
- }
+ if (cpu_is_omap24xx())
+ prcm_offs = WKUP_MOD;
+ else if (cpu_is_omap34xx())
+ prcm_offs = OMAP3430_GR_MOD;
+ else
+ WARN_ON(1);
+
+ prm_set_mod_reg_bits(OMAP_RST_DPLL3, prcm_offs, RM_RSTCTRL);
}
static inline u32 __omap_prcm_read(void __iomem *base, s16 module, u16 reg)
@@ -75,6 +78,20 @@
}
EXPORT_SYMBOL(prm_write_mod_reg);
+/* Read-modify-write a register in a PRM module. Caller must lock */
+u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
+{
+ u32 v;
+
+ v = prm_read_mod_reg(module, idx);
+ v &= ~mask;
+ v |= bits;
+ prm_write_mod_reg(v, module, idx);
+
+ return v;
+}
+EXPORT_SYMBOL(prm_rmw_mod_reg_bits);
+
/* Read a register in a CM module */
u32 cm_read_mod_reg(s16 module, u16 idx)
{
@@ -89,6 +106,20 @@
}
EXPORT_SYMBOL(cm_write_mod_reg);
+/* Read-modify-write a register in a CM module. Caller must lock */
+u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
+{
+ u32 v;
+
+ v = cm_read_mod_reg(module, idx);
+ v &= ~mask;
+ v |= bits;
+ cm_write_mod_reg(v, module, idx);
+
+ return v;
+}
+EXPORT_SYMBOL(cm_rmw_mod_reg_bits);
+
void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals)
{
prm_base = omap2_globals->prm;