clk: gate: remove superfluous code ...

This code didn't have any effect.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: gate: add CLK_GATE_HIWORD_MASK flag ...

Clock gates having the CLK_GATE_HIWORD_MASK flag set use the upper 16
bits of the register as a "write enable" mask for the value in the
lower 16 bits.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: gate: unify enable and disable functions handling ...

To avoid code duplication and make easier to introduce new flags.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: gate: add flags argument to clock gate constructor ...

This adds a clk_gate_flags argument to clock gate creation functions
to allow the introduction of new clock gate modifiers.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: Add parent round/set rate for mux and gate ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: clk-gate: pass flags to initializers ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

drivers/clk/clk-gate.c: Fix sparse warning ...

drivers/clk/clk-gate.c:79:16: warning: symbol 'clk_gate_ops' was not declared. Should it be static?

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: allow to instanciate clk gate without registering it ...

Allows to reuse the clk gate code within other clocks.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: gate: Add inverted gate support ...

This adds support for gates which need 0 to enable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: Add is_enabled callback ...

This allows us to better detect whether a clk is enabled or not.

- If we can ask a clk, ask it. If it's enabled, go on and ask parents
- If we can't ask it, but it can be enabled, depend on the enable_count.
  if it's positive, go on and ask parents
- If we can't ask it and it cannot be enabled, assume it is enabled
  and ask parents.

This makes the CLK_ALWAYS_ENABLED unnecessary, since the fixed clk now
always returns 1 in its is_enabled callback.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

clk: Add clk gate support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>