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The lpc-18xx driver currently manipulates the pwm_device struct directly
rather than using the pwm_set_chip_data() function. While the current
method may save a clock cycle or two, using the explicit function call
makes it more obvious that data is set to the local chip data pointer.
Signed-off-by: Olliver Schinagl <[email protected]>
Reviewed-by: Ariel D'Alessandro <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Use pwm_get/set_xxx() helpers instead of directly accessing the pwm->xxx
field. Doing that will ease adaptation of the PWM framework to support
atomic update.
Signed-off-by: Boris Brezillon <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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The clk API may return 0 on clk_get_rate(), so we should check the
result before using it as a divisor.
Signed-off-by: Wolfram Sang <[email protected]>
Acked-by: Joachim Eastwood <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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This commit adds support for NXP LPC18xx PWM/SCT.
NXP LPC SoCs family, which includes LPC18xx/LPC43xx, provides a State
Configurable Timer (SCT) which can be configured as a Pulse Width
Modulator. Other SoCs in that family may share the same hardware.
The PWM supports a total of 16 channels, but only 15 can be simultaneously
requested. There's only one period, global to all the channels, thus PWM
driver will refuse setting different values to it, unless there's only one
channel requested.
Signed-off-by: Ariel D'Alessandro <[email protected]>
[[email protected]: remove excessive padding of fields]
Signed-off-by: Thierry Reding <[email protected]>
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