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>

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",