OMAP2/3 clock: Extend find_idlest() to pass back idle state value

Current implementation defines clock idle state indicators based on the
cpu information (cpu_is_omap24xx() or cpu_is_omap34xx()) in a system wide
manner. This patch extends the find_idlest() function in clkops to pass
back the idle state indicator for that clock, thus allowing idle state
indicators to be defined on a per clock basis if required.

This is specifically needed on AM35xx devices as the new IPSS clocks
indicates the idle status (0 is idle, 1 is ready) in a way just
opposite to how its handled in OMAP3 (0 is ready, 1 is idle).

Signed-off-by: Ranjith Lohithakshan <ranjithl@ti.com>
[paul@pwsan.com: updated to apply after commit 98c45457 et seq.]
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 5 insertions, 9 deletions

diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
index e8e121a41d6d..0f87fdce02a9 100644
--- a/arch/arm/mach-omap2/prcm.c
+++ b/arch/arm/mach-omap2/prcm.c
@@ -242,26 +242,22 @@ u32 cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module, s16 idx)
  * omap2_cm_wait_idlest - wait for IDLEST bit to indicate module readiness
  * @reg: physical address of module IDLEST register
  * @mask: value to mask against to determine if the module is active
+ * @idlest: idle state indicator (0 or 1) for the clock
  * @name: name of the clock (for printk)
  *
  * Returns 1 if the module indicated readiness in time, or 0 if it
  * failed to enable in roughly MAX_MODULE_ENABLE_WAIT microseconds.
  */
-int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, const char *name)
+int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
+                                const char *name)
 {
         int i = 0;
         int ena = 0;
 
-        /*
-         * 24xx uses 0 to indicate not ready, and 1 to indicate ready.
-         * 34xx reverses this, just to keep us on our toes
-         */
-        if (cpu_is_omap24xx())
-                ena = mask;
-        else if (cpu_is_omap34xx())
+        if (idlest)
                 ena = 0;
         else
-                BUG();
+                ena = mask;
 
         /* Wait for lock */
         omap_test_timeout(((__raw_readl(reg) & mask) == ena),