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mux: Add support for reading mux state from consumer DT node

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In some cases, we might need to provide the state of the mux to be set for
the operation of a given peripheral. Therefore, pass this information using
mux-states property.

Link: https://lore.kernel.org/lkml/20211123081222.27979-1-a-govindraju@ti.com
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Signed-off-by: Peter Rosin <peda@axentia.se> (minor edits)
Link: https://lore.kernel.org/r/aac25be8-9515-a980-f7cb-709938c84822@axentia.se
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aswath Govindraju
2022-01-07 08:44:25 +01:00
committed by Greg Kroah-Hartman
parent b2fb28dedd
commit 84564481bc
3 changed files with 248 additions and 52 deletions
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18
include/linux/mux/consumer.h
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@@ -14,14 +14,19 @@
struct device;
struct mux_control;
struct mux_state;
unsigned int mux_control_states(struct mux_control *mux);
int __must_check mux_control_select_delay(struct mux_control *mux,
unsigned int state,
unsigned int delay_us);
int __must_check mux_state_select_delay(struct mux_state *mstate,
unsigned int delay_us);
int __must_check mux_control_try_select_delay(struct mux_control *mux,
unsigned int state,
unsigned int delay_us);
int __must_check mux_state_try_select_delay(struct mux_state *mstate,
unsigned int delay_us);
static inline int __must_check mux_control_select(struct mux_control *mux,
unsigned int state)
@@ -29,18 +34,31 @@ static inline int __must_check mux_control_select(struct mux_control *mux,
return mux_control_select_delay(mux, state, 0);
}
static inline int __must_check mux_state_select(struct mux_state *mstate)
{
return mux_state_select_delay(mstate, 0);
}
static inline int __must_check mux_control_try_select(struct mux_control *mux,
unsigned int state)
{
return mux_control_try_select_delay(mux, state, 0);
}
static inline int __must_check mux_state_try_select(struct mux_state *mstate)
{
return mux_state_try_select_delay(mstate, 0);
}
int mux_control_deselect(struct mux_control *mux);
int mux_state_deselect(struct mux_state *mstate);
struct mux_control *mux_control_get(struct device *dev, const char *mux_name);
void mux_control_put(struct mux_control *mux);
struct mux_control *devm_mux_control_get(struct device *dev,
const char *mux_name);
struct mux_state *devm_mux_state_get(struct device *dev,
const char *mux_name);
#endif /* _LINUX_MUX_CONSUMER_H */