Creates a union of a struct for each type of clock to reduce memory
usage and clarify which members are used by all clocks and which are
used by a single type.
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NColin Cross <ccross@android.com>

The existing version did not extend well to core dvfs, drop it
for now until the new clk api with clk_prepare and clk_unprepare
is ready and non-atomic clocks are possible.
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NColin Cross <ccross@android.com>

The PLL lock bits are not reliable, use per-PLL timeouts instead.
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NColin Cross <ccross@android.com>

Add a new 'reset' clk op. This can be provided for any clock,
not just peripherals.
Signed-off-by: NDima Zavin <dima@android.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NColin Cross <ccross@android.com>

factorise some generic infrastructure to assist looking up struct clks
for the ARM & SH architecture.

as the code is identical at 99%

put the arch specific code for allocation as example in asm/clkdev.h
Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: NPaul Mundt <lethal@linux-sh.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

- Add drivers to clock lookup table
- Add new pll_m entries
- Support I2C U16 divider
- Fix rate reporting on 32.768kHz clock
- Call propagate rate only if set_rate succeeds
- Add support for audio_sync clock
- Add 24MHz to PLLA frequency list
- Correct i2s1/2/spdifout mux
- Add suspend support
- Fix enable/disable parent clocks in set_parent
- Add max_rate parameter to all clocks
- DVFS support
- Add virtual cpu clock with dvfs
- Support clk_round_rate
- Fix requesting very high periph frequencies
- Add quirks for PLLU:
   PLLU is slightly different from the rest of the PLLs.  The
   lock enable bit is at bit 22 instead of 18 in the MISC
   register, and the post divider field is a single bit with
   reversed values from other PLLs.
- Simplify recalculating clock rates
- Fix UART divider flags
- Remove unused clock ops
Signed-off-by: NColin Cross <ccross@android.com>

v2: fixes from Russell King:
	- include linux/io.h instead of asm/io.h
	- fix whitespace in Kconfig
	- Use spin_lock_init to initialize lock
	- Return -ENOSYS instead of BUG for unimplemented clock ops
	- Use proper return values in tegra2 clock ops
    additional changes:
	- Rename some clocks to match dev_ids
	- add rate propagation
	- add debugfs entries
	- add support for clock listed in clk_lookup under multiple dev_ids
v3:
	- Replace per-clock locking with global clock lock
	- Autodetect clock state on init
	- Let clock dividers pick next lower possible frequency
	- Add support for clock init tables
	- Minor bug fixes
	- Fix checkpatch issues
Signed-off-by: NColin Cross <ccross@android.com>