diff options
Diffstat (limited to 'arch/arm/mach-davinci/psc.c')
| -rw-r--r-- | arch/arm/mach-davinci/psc.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c index e44544ac2b1..84171abf5f7 100644 --- a/arch/arm/mach-davinci/psc.c +++ b/arch/arm/mach-davinci/psc.c @@ -39,6 +39,7 @@ #define MDSTAT 0x800 #define MDCTL 0xA00 +#define MDSTAT_STATE_MASK 0x1f /* Return nonzero iff the domain's clock is active */ int __init davinci_psc_is_clk_active(unsigned int id) @@ -53,14 +54,13 @@ int __init davinci_psc_is_clk_active(unsigned int id) /* Enable or disable a PSC domain */ void davinci_psc_config(unsigned int domain, unsigned int id, char enable) { - u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl, mdstat_mask; + u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl; void __iomem *psc_base = IO_ADDRESS(DAVINCI_PWR_SLEEP_CNTRL_BASE); + u32 next_state = enable ? 0x3 : 0x2; /* 0x3 enables, 0x2 disables */ mdctl = __raw_readl(psc_base + MDCTL + 4 * id); - if (enable) - mdctl |= 0x00000003; /* Enable Module */ - else - mdctl &= 0xFFFFFFE2; /* Disable Module */ + mdctl &= ~MDSTAT_STATE_MASK; + mdctl |= next_state; __raw_writel(mdctl, psc_base + MDCTL + 4 * id); pdstat = __raw_readl(psc_base + PDSTAT); @@ -93,12 +93,7 @@ void davinci_psc_config(unsigned int domain, unsigned int id, char enable) } while (!(((ptstat >> domain) & 1) == 0)); } - if (enable) - mdstat_mask = 0x3; - else - mdstat_mask = 0x2; - do { mdstat = __raw_readl(psc_base + MDSTAT + 4 * id); - } while (!((mdstat & 0x0000001F) == mdstat_mask)); + } while (!((mdstat & MDSTAT_STATE_MASK) == next_state)); } |