diff options
| -rw-r--r-- | arch/arm/mach-omap2/prcm.c | 24 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/prcm.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c index 96f4616..d4388d3 100644 --- a/arch/arm/mach-omap2/prcm.c +++ b/arch/arm/mach-omap2/prcm.c @@ -216,6 +216,30 @@ u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask) return v; } +/* Read a PRM register, AND it, and shift the result down to bit 0 */ +u32 omap4_prm_read_bits_shift(void __iomem *reg, u32 mask) +{ + u32 v; + + v = __raw_readl(reg); + v &= mask; + v >>= __ffs(mask); + + return v; +} + +/* Read-modify-write a register in a PRM module. Caller must lock */ +u32 omap4_prm_rmw_reg_bits(u32 mask, u32 bits, void __iomem *reg) +{ + u32 v; + + v = __raw_readl(reg); + v &= ~mask; + v |= bits; + __raw_writel(v, reg); + + return v; +} /* Read a register in a CM module */ u32 cm_read_mod_reg(s16 module, u16 idx) { diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-omap/include/plat/prcm.h index 9fbd914..ab77442 100644 --- a/arch/arm/plat-omap/include/plat/prcm.h +++ b/arch/arm/plat-omap/include/plat/prcm.h @@ -38,6 +38,8 @@ u32 prm_read_mod_reg(s16 module, u16 idx); void prm_write_mod_reg(u32 val, s16 module, u16 idx); u32 prm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx); u32 prm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask); +u32 omap4_prm_read_bits_shift(void __iomem *reg, u32 mask); +u32 omap4_prm_rmw_reg_bits(u32 mask, u32 bits, void __iomem *reg); u32 cm_read_mod_reg(s16 module, u16 idx); void cm_write_mod_reg(u32 val, s16 module, u16 idx); u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx); |