diff options
| author | Rajendra Nayak <rnayak@ti.com> | 2011-07-10 11:56:55 (GMT) |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2011-07-10 11:56:55 (GMT) |
| commit | 555e74ea08bfc04a0136f976cbaa200addf1ba87 (patch) | |
| tree | afac050a2669fcf1e47d764785f9007c568b9e15 /arch/arm/mach-omap2/clockdomain44xx.c | |
| parent | b86cfb52a145d8ddad66b98c39c6764f3883cd5a (diff) | |
| download | linux-555e74ea08bfc04a0136f976cbaa200addf1ba87.tar.xz | |
OMAP2+: clockdomain: Add per clkdm lock to prevent concurrent state programming
Since the clkdm state programming is now done from within the hwmod
framework (which uses a per-hwmod lock) instead of the being done
from the clock framework (which used a global lock), there is now a
need to have per-clkdm locking to prevent races between different
hwmods/modules belonging to the same clock domain concurrently
programming the clkdm state.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain44xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/clockdomain44xx.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/arch/arm/mach-omap2/clockdomain44xx.c b/arch/arm/mach-omap2/clockdomain44xx.c index a1a4ecd..b43706a 100644 --- a/arch/arm/mach-omap2/clockdomain44xx.c +++ b/arch/arm/mach-omap2/clockdomain44xx.c @@ -95,13 +95,8 @@ static void omap4_clkdm_deny_idle(struct clockdomain *clkdm) static int omap4_clkdm_clk_enable(struct clockdomain *clkdm) { - bool hwsup = false; - - hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition, - clkdm->cm_inst, clkdm->clkdm_offs); - - if (!hwsup) - clkdm_wakeup(clkdm); + if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) + return omap4_clkdm_wakeup(clkdm); return 0; } @@ -113,8 +108,8 @@ static int omap4_clkdm_clk_disable(struct clockdomain *clkdm) hwsup = omap4_cminst_is_clkdm_in_hwsup(clkdm->prcm_partition, clkdm->cm_inst, clkdm->clkdm_offs); - if (!hwsup) - clkdm_sleep(clkdm); + if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) + omap4_clkdm_sleep(clkdm); return 0; } |