OMAP2/3: PRCM: split OMAP2/3-specific PRCM code into OMAP2/3-specific files

In preparation for adding OMAP4-specific PRCM accessor/mutator
functions, split the existing OMAP2/3 PRCM code into OMAP2/3-specific
files.  Most of what was in mach-omap2/{cm,prm}.{c,h} has now been
moved into mach-omap2/{cm,prm}2xxx_3xxx.{c,h}, since it was
OMAP2xxx/3xxx-specific.

This process also requires the #includes in each of these files to be
changed to reference the new file name.  As part of doing so, add some
comments into plat-omap/sram.c and plat-omap/mcbsp.c, which use
"sideways includes", to indicate that these users of the PRM/CM includes
should not be doing so.

Thanks to Felipe Contreras <felipe.contreras@gmail.com> for comments on this
patch.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Cc: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Acked-by: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>

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 421771e..064b52a 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