@@ -282,13 +282,9 @@ void omap3_clear_scratchpad_contents(void)
void __iomem *v_addr;
u32 offset = 0;
v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
- if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
- OMAP3430_GLOBAL_COLD_RST_MASK) {
+ if (omap3xxx_prm_clear_global_cold_reset()) {
for ( ; offset <= max_offset; offset += 0x4)
__raw_writel(0x0, (v_addr + offset));
- omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
- OMAP3430_GR_MOD,
- OMAP3_PRM_RSTST_OFFSET);
}
}
@@ -388,6 +388,26 @@ void omap3xxx_prm_iva_idle(void)
OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
}
+/**
+ * omap3xxx_prm_clear_global_cold_reset - checks the global cold reset status
+ * and clears it if asserted
+ *
+ * Checks if cold-reset has occurred and clears the status bit if yes. Returns
+ * 1 if cold-reset has occurred, 0 otherwise.
+ */
+int omap3xxx_prm_clear_global_cold_reset(void)
+{
+ if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
+ OMAP3430_GLOBAL_COLD_RST_MASK) {
+ omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
+ OMAP3430_GR_MOD,
+ OMAP3_PRM_RSTST_OFFSET);
+ return 1;
+ }
+
+ return 0;
+}
+
/* Powerdomain low-level functions */
static int omap3_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
@@ -165,6 +165,7 @@ extern u32 omap3xxx_prm_get_reset_sources(void);
int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits);
void omap3xxx_prm_iva_idle(void);
void omap3_prm_reset_modem(void);
+int omap3xxx_prm_clear_global_cold_reset(void);
#endif /* __ASSEMBLER */
This isolates the PRM register access within the PRM driver. Signed-off-by: Tero Kristo <t-kristo@ti.com> --- arch/arm/mach-omap2/control.c | 6 +----- arch/arm/mach-omap2/prm3xxx.c | 20 ++++++++++++++++++++ arch/arm/mach-omap2/prm3xxx.h | 1 + 3 files changed, 22 insertions(+), 5 deletions(-)