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| author | Ranjith Lohithakshan <ranjithl@ti.com> | 2010-02-24 20:05:54 +0100 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2010-02-24 20:05:54 +0100 |
| commit | 419cc97d3678f0fca5e60b3853dd9c1371f67805 (patch) | |
| tree | a3997e3f9ad52abf927597f8e241fb6dfb02ab00 /arch/arm/mach-omap2/prcm.c | |
| parent | OMAP3 PM: Adding counters for power domain logic off and mem off during reten... (diff) | |
| download | linux-419cc97d3678f0fca5e60b3853dd9c1371f67805.tar.xz linux-419cc97d3678f0fca5e60b3853dd9c1371f67805.zip | |
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>
Diffstat (limited to 'arch/arm/mach-omap2/prcm.c')
| -rw-r--r-- | arch/arm/mach-omap2/prcm.c | 14 |
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), |