summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/prm2xxx_3xxx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/prm2xxx_3xxx.c')
-rw-r--r--arch/arm/mach-omap2/prm2xxx_3xxx.c51
1 files changed, 49 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c
index 421771eee450..064b52a3e202 100644
--- a/arch/arm/mach-omap2/prm2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c
@@ -12,18 +12,65 @@
*/
#include <linux/kernel.h>
-#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/err.h>
+#include <linux/io.h>
#include <plat/common.h>
#include <plat/cpu.h>
#include <plat/prcm.h>
-#include "prm.h"
+#include "prm2xxx_3xxx.h"
+#include "cm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
#include "prm-regbits-34xx.h"
+u32 prm_read_mod_reg(s16 module, u16 idx)
+{
+ return __raw_readl(prm_base + module + idx);
+}
+
+void prm_write_mod_reg(u32 val, s16 module, u16 idx)
+{
+ __raw_writel(val, prm_base + module + idx);
+}
+
+/* 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;
+}
+
+/* Read a PRM register, AND it, and shift the result down to bit 0 */
+u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
+{
+ u32 v;
+
+ v = prm_read_mod_reg(domain, idx);
+ v &= mask;
+ v >>= __ffs(mask);
+
+ return v;
+}
+
+u32 prm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
+{
+ return prm_rmw_mod_reg_bits(bits, bits, module, idx);
+}
+
+u32 prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
+{
+ return prm_rmw_mod_reg_bits(bits, 0x0, module, idx);
+}
+
+
/**
* omap2_prm_is_hardreset_asserted - read the HW reset line state of
* submodules contained in the hwmod module