Do not output an error message if requesting gpio failes with EPROBE_DEFER.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: NSergej Sawazki <ce3a@gmx.de>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

Include export.h for EXPORT_SYMBOL_GPL, no need to include module.h.

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: NSergej Sawazki <ce3a@gmx.de>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

This function is marked as __init, so exposing it to modules
doesn't make any sense and it isn't used by modules anyway.

drivers/clk/clk-gpio-gate.c:192:13: warning: symbol 'of_gpio_gate_clk_setup' was not declared. Should it be static?

Cc: Jyri Sarha <jsarha@ti.com>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

The active low flag in the DT cell is currently ignored.

This occurs because of_get_named_gpio_flags() does not apply the flags
to the underlying struct gpio_desc so the test in clk_register_gpio_gate()
was bogus.

Note that this patch changes the internal kernel API for
clk_register_gpio_gate() but there are currently no other users.
Signed-off-by: NMartin Fuzzey <mfuzzey@parkeon.com>
Acked-by: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NMichael Turquette <mturquette@linaro.org>

The gpio-gate clock uses the gpiod_ APIs but does not directly include the
header for them causing build failures in some configurations including ARM
allnoconfig. Include the header directly.
Signed-off-by: NMark Brown <broonie@kernel.org>
Acked-by: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NMike Turquette <mturquette@linaro.org>

The added gpio-gate-clock is a basic clock that can be enabled and
disabled trough a gpio output. The DT binding document for the clock
is also added. For EPROBE_DEFER handling the registering of the clock
has to be delayed until of_clk_get() call time.
Signed-off-by: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NMike Turquette <mturquette@linaro.org>