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Add the PWM chip using devm_pwmchip_add() to avoid having to manually
remove it. This is useful for subsequent patches adding platform device
support.
Signed-off-by: Ben Dooks <[email protected]>
Reviewed-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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In preparation for adding other bus support, move the allocation
of the PWM structure out of the main driver code.
Signed-off-by: Ben Dooks <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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The dwc_pwm_probe() assigns dev to be &pci->dev but then uses &pci->dev
throughout the function. Change these all to the 'dev' variable to make
lines shorter.
Signed-off-by: Ben Dooks <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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.get_state() might fail in some cases. To make it possible that a driver
signals such a failure change the prototype of .get_state() to return an
error code.
This patch was created using coccinelle and the following semantic patch:
@p1@
identifier getstatefunc;
identifier driver;
@@
struct pwm_ops driver = {
...,
.get_state = getstatefunc
,...
};
@p2@
identifier p1.getstatefunc;
identifier chip, pwm, state;
@@
-void
+int
getstatefunc(struct pwm_chip *chip, struct pwm_device *pwm, struct pwm_state *state)
{
...
- return;
+ return 0;
...
}
plus the actual change of the prototype in include/linux/pwm.h (plus some
manual fixing of indentions and empty lines).
So for now all drivers return success unconditionally. They are adapted
in the following patches to make the changes easier reviewable.
Reviewed-by: Heiko Stuebner <[email protected]>
Reviewed-by: Baolin Wang <[email protected]>
Reviewed-by: Tzung-Bi Shih <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Reviewed-by: Nobuhiro Iwamatsu <[email protected]>
Reviewed-by: Andre Przywara <[email protected]>
Reviewed-by: Dave Stevenson <[email protected]>
Acked-by: Douglas Anderson <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Acked-by: Pavel Machek <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Since commit 5e5da1e9fbee ("pwm: ab8500: Explicitly allocate pwm chip
base dynamically") all drivers use dynamic ID allocation explicitly. New
drivers are supposed to do the same, so remove support for driver
specified base IDs and drop all assignments in the low-level drivers.
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Introduce driver for Synopsys DesignWare PWM Controller used on Intel
Elkhart Lake.
Initial implementation is done by Felipe Balbi while he was working at
Intel with later changes from Raymond Tan and me.
Co-developed-by: Felipe Balbi (Intel) <[email protected]>
Signed-off-by: Felipe Balbi (Intel) <[email protected]>
Co-developed-by: Raymond Tan <[email protected]>
Signed-off-by: Raymond Tan <[email protected]>
Signed-off-by: Jarkko Nikula <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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