Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / arm / mach-omap2 / prminst44xx.c

diff --git a/arch/arm/mach-omap2/prminst44xx.c b/arch/arm/mach-omap2/prminst44xx.c
new file mode 100644 (file)
index 0000000..a303242
--- /dev/null
+++ b/arch/arm/mach-omap2/prminst44xx.c
@@ -0,0 +1,66 @@
+/*
+ * OMAP4 PRM instance functions
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <plat/common.h>
+
+#include "prm44xx.h"
+#include "prminst44xx.h"
+#include "prm-regbits-44xx.h"
+#include "prcm44xx.h"
+#include "prcm_mpu44xx.h"
+
+static u32 _prm_bases[OMAP4_MAX_PRCM_PARTITIONS] = {
+       [OMAP4430_INVALID_PRCM_PARTITION]       = 0,
+       [OMAP4430_PRM_PARTITION]                = OMAP4430_PRM_BASE,
+       [OMAP4430_CM1_PARTITION]                = 0,
+       [OMAP4430_CM2_PARTITION]                = 0,
+       [OMAP4430_SCRM_PARTITION]               = 0,
+       [OMAP4430_PRCM_MPU_PARTITION]           = OMAP4430_PRCM_MPU_BASE,
+};
+
+/* Read a register in a PRM instance */
+u32 omap4_prminst_read_inst_reg(u8 part, s16 inst, u16 idx)
+{
+       BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS ||
+              part == OMAP4430_INVALID_PRCM_PARTITION ||
+              !_prm_bases[part]);
+       return __raw_readl(OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst +
+                                              idx));
+}
+
+/* Write into a register in a PRM instance */
+void omap4_prminst_write_inst_reg(u32 val, u8 part, s16 inst, u16 idx)
+{
+       BUG_ON(part >= OMAP4_MAX_PRCM_PARTITIONS ||
+              part == OMAP4430_INVALID_PRCM_PARTITION ||
+              !_prm_bases[part]);
+       __raw_writel(val, OMAP2_L4_IO_ADDRESS(_prm_bases[part] + inst + idx));
+}
+
+/* Read-modify-write a register in PRM. Caller must lock */
+u32 omap4_prminst_rmw_inst_reg_bits(u32 mask, u32 bits, u8 part, s16 inst,
+                                  s16 idx)
+{
+       u32 v;
+
+       v = omap4_prminst_read_inst_reg(part, inst, idx);
+       v &= ~mask;
+       v |= bits;
+       omap4_prminst_write_inst_reg(v, part, inst, idx);
+
+       return v;
+}