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author | Paul Walmsley <paul@pwsan.com> | 2010-12-21 22:30:55 (GMT) |
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committer | Paul Walmsley <paul@pwsan.com> | 2010-12-22 03:01:55 (GMT) |
commit | 59fb659b065f52fcc2deed293cfbfc58f890376c (patch) | |
tree | 17d41be36262ed960fb30df41acf80602ade6726 /arch/arm/mach-omap2/prm2xxx_3xxx.c | |
parent | cdb54c4457d68994da7c2e16907adfbfc130060d (diff) | |
download | linux-59fb659b065f52fcc2deed293cfbfc58f890376c.tar.xz |
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>
Diffstat (limited to 'arch/arm/mach-omap2/prm2xxx_3xxx.c')
-rw-r--r-- | arch/arm/mach-omap2/prm2xxx_3xxx.c | 51 |
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 |