diff options
| author | Cyril Chemparathy <cyril@ti.com> | 2010-03-25 17:43:47 -0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2010-05-06 15:02:04 -0700 |
| commit | 52958be3ad6e2b72a5943718f339ed4e11685739 (patch) | |
| tree | dcb17c4491930a31f98701e2e2879877780908d3 /arch/arm/mach-davinci/psc.c | |
| parent | 449ef7f6a9c732657938b222f8804d3e34a3603e (diff) | |
| download | linux-52958be3ad6e2b72a5943718f339ed4e11685739.tar.bz2 | |
Davinci: support LPSC SwRstDisable state
The current clock control code always gates the clock (PSC state Disable = 2)
on clk_disable(). Some on-chip peripherals (e.g. LCD controller on TNETV107X)
need to be put into SwRstDisable = 0 on clock disable, to maintain
hardware sanity.
This patch extends the davinci_psc_config() arguments to pass in the desired
module state instead of a boolean enable/disable. Further, clk_disable() now
checks for the PSC_SWRSTDISABLE clk flag before selecting the target state.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-davinci/psc.c')
| -rw-r--r-- | arch/arm/mach-davinci/psc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c index adf6b5c7f1e5..d7cb438c4df6 100644 --- a/arch/arm/mach-davinci/psc.c +++ b/arch/arm/mach-davinci/psc.c @@ -47,12 +47,11 @@ int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id) /* Enable or disable a PSC domain */ void davinci_psc_config(unsigned int domain, unsigned int ctlr, - unsigned int id, char enable) + unsigned int id, u32 next_state) { u32 epcpr, ptcmd, ptstat, pdstat, pdctl1, mdstat, mdctl; void __iomem *psc_base; struct davinci_soc_info *soc_info = &davinci_soc_info; - u32 next_state = enable ? 0x3 : 0x2; /* 0x3 enables, 0x2 disables */ if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) { pr_warning("PSC: Bad psc data: 0x%x[%d]\n", |