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authorCyril Chemparathy <cyril@ti.com>2010-03-26 00:43:47 +0300
committerKevin Hilman <khilman@deeprootsystems.com>2010-05-07 02:02:04 +0400
commit52958be3ad6e2b72a5943718f339ed4e11685739 (patch)
treedcb17c4491930a31f98701e2e2879877780908d3 /arch/arm/mach-davinci/psc.c
parent449ef7f6a9c732657938b222f8804d3e34a3603e (diff)
downloadlinux-52958be3ad6e2b72a5943718f339ed4e11685739.tar.xz
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.c3
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",