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path: root/drivers/clk/clk-multiplier.c
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2016-06-20clk: multiplier: Prevent the multiplier from under / over flowingMaxime Ripard
In the current multiplier base clock implementation, if the CLK_SET_RATE_PARENT flag isn't set, the code will not make sure that the multiplier computed remains within the boundaries of our clock. This means that if the clock we want to reach is below the parent rate, or if the multiplier is above the maximum that we can reach, we will end up with a completely bogus one that the clock cannot achieve. Fixes: f2e0a53271a4 ("clk: Add a basic multiplier clock") Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1463402840-17062-3-git-send-email-maxime.ripard@free-electrons.com
2016-01-29clk: move the common clock's to_clk_*(_hw) macros to clk-provider.hGeliang Tang
to_clk_*(_hw) macros have been repeatedly defined in many places. This patch moves all the to_clk_*(_hw) definitions in the common clock framework to public header clk-provider.h, and drop the local definitions. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-23clk: Remove clk_{register,unregister}_multiplier()Stephen Boyd
These APIs aren't used, so remove them. This can be reverted if we get a user at some point. Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com> Suggested-by: Michael Turquette <mturquette@baylibre.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-21clk: Add a basic multiplier clockMaxime Ripard
Some clocks are using a multiplier component, however, unlike their mux, gate or divider counterpart, these factors don't have a basic clock implementation. This leads to code duplication across platforms that want to use that kind of clocks, and the impossibility to use the composite clocks with such a clock without defining your own rate operations. Create such a driver in order to remove these issues, and hopefully factor the implementations, reducing code size across platforms and consolidating the various implementations. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org>