diff options
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/davinci/psc.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/arm/cpu/arm926ejs/davinci/psc.c b/arch/arm/cpu/arm926ejs/davinci/psc.c index 707fa47e31..3e925181ea 100644 --- a/arch/arm/cpu/arm926ejs/davinci/psc.c +++ b/arch/arm/cpu/arm926ejs/davinci/psc.c @@ -46,7 +46,7 @@ */ /* Works on Always On power domain only (no PD argument) */ -void lpsc_on(unsigned int id) +static void lpsc_transition(unsigned int id, unsigned int state) { dv_reg_p mdstat, mdctl, ptstat, ptcmd; #ifdef CONFIG_SOC_DA8XX @@ -83,10 +83,10 @@ void lpsc_on(unsigned int id) while (readl(ptstat) & 0x01) continue; - if ((readl(mdstat) & PSC_MDSTAT_STATE) == 0x03) - return; /* Already on and enabled */ + if ((readl(mdstat) & PSC_MDSTAT_STATE) == state) + return; /* Already in that state */ - writel(readl(mdctl) | 0x03, mdctl); + writel((readl(mdctl) & ~PSC_MDCTL_NEXT) | state, mdctl); switch (id) { #ifdef CONFIG_SOC_DM644X @@ -114,10 +114,20 @@ void lpsc_on(unsigned int id) while (readl(ptstat) & 0x01) continue; - while ((readl(mdstat) & PSC_MDSTAT_STATE) != 0x03) + while ((readl(mdstat) & PSC_MDSTAT_STATE) != state) continue; } +void lpsc_on(unsigned int id) +{ + lpsc_transition(id, 0x03); +} + +void lpsc_syncreset(unsigned int id) +{ + lpsc_transition(id, 0x01); +} + /* Not all DaVinci chips have a DSP power domain. */ #ifdef CONFIG_SOC_DM644X |