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author | Tony Lindgren <tony@atomide.com> | 2008-07-03 12:24:44 +0300 |
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committer | Tony Lindgren <tony@atomide.com> | 2008-07-03 12:24:44 +0300 |
commit | a58caad11301a5bdc2d7b76596ab5477221f7a9b (patch) | |
tree | 95bb4df0ad450b0439cdf6256d2a2b2345b03231 /arch/arm/mach-omap2/prcm.c | |
parent | e1f80bfca86ab48b7bed731b32262fb1a2835de5 (diff) | |
download | linux-stable-a58caad11301a5bdc2d7b76596ab5477221f7a9b.tar.gz linux-stable-a58caad11301a5bdc2d7b76596ab5477221f7a9b.tar.bz2 linux-stable-a58caad11301a5bdc2d7b76596ab5477221f7a9b.zip |
ARM: OMAP: Introduce omap_globals and prcm access functions for multi-omap
New struct omap_globals contains the omap processor specific
module bases. Use omap_globals to set the various base addresses
to make detecting omap chip type simpler.
Also introduce OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS for future multi-omap
patches.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/prcm.c')
-rw-r--r-- | arch/arm/mach-omap2/prcm.c | 55 |
1 files changed, 54 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c index b12f423b8595..9584376d055a 100644 --- a/arch/arm/mach-omap2/prcm.c +++ b/arch/arm/mach-omap2/prcm.c @@ -16,12 +16,18 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/clk.h> +#include <linux/io.h> -#include <asm/io.h> +#include <asm/arch/common.h> +#include <asm/arch/prcm.h> +#include "clock.h" #include "prm.h" #include "prm-regbits-24xx.h" +static void __iomem *prm_base; +static void __iomem *cm_base; + extern void omap2_clk_prepare_for_reboot(void); u32 omap_prcm_get_reset_sources(void) @@ -41,3 +47,50 @@ void omap_prcm_arch_reset(char mode) prm_write_mod_reg(wkup, WKUP_MOD, RM_RSTCTRL); } } + +static inline u32 __omap_prcm_read(void __iomem *base, s16 module, u16 reg) +{ + BUG_ON(!base); + return __raw_readl(base + module + reg); +} + +static inline void __omap_prcm_write(u32 value, void __iomem *base, + s16 module, u16 reg) +{ + BUG_ON(!base); + __raw_writel(value, base + module + reg); +} + +/* Read a register in a PRM module */ +u32 prm_read_mod_reg(s16 module, u16 idx) +{ + return __omap_prcm_read(prm_base, module, idx); +} +EXPORT_SYMBOL(prm_read_mod_reg); + +/* Write into a register in a PRM module */ +void prm_write_mod_reg(u32 val, s16 module, u16 idx) +{ + __omap_prcm_write(val, prm_base, module, idx); +} +EXPORT_SYMBOL(prm_write_mod_reg); + +/* Read a register in a CM module */ +u32 cm_read_mod_reg(s16 module, u16 idx) +{ + return __omap_prcm_read(cm_base, module, idx); +} +EXPORT_SYMBOL(cm_read_mod_reg); + +/* Write into a register in a CM module */ +void cm_write_mod_reg(u32 val, s16 module, u16 idx) +{ + __omap_prcm_write(val, cm_base, module, idx); +} +EXPORT_SYMBOL(cm_write_mod_reg); + +void __init omap2_set_globals_prcm(struct omap_globals *omap2_globals) +{ + prm_base = omap2_globals->prm; + cm_base = omap2_globals->cm; +} |