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drivers: pinctrl: silabs: Add support for analog bus allocation

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The GPIO peripheral on Silabs Series 2 devices is responsible for
allocating analog buses to analog peripherals. Enable support for
this in the pinctrl driver. Since these bus allocations are not
digital pins, introduce a new property silabs,analog-bus for this
purpose.

Signed-off-by: Aksel Skauge Mellbye <aksel.mellbye@silabs.com>
This commit is contained in:
Aksel Skauge Mellbye 2025-01-23 19:56:09 +01:00 • committed by Benjamin Cabé
commit 120691a155
9 changed files with 91 additions and 13 deletions
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22
soc/silabs/common/pinctrl_soc.h
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@ -73,14 +73,30 @@ typedef struct pinctrl_soc_pin {
.en_bit = \
(FIELD_GET(SILABS_PINCTRL_HAVE_EN_MASK, DT_PROP_BY_IDX(node, prop, idx)) \
? FIELD_GET(SILABS_PINCTRL_EN_BIT_MASK, DT_PROP_BY_IDX(node, prop, idx)) \
: 0xFF), \
: SILABS_PINCTRL_UNUSED), \
.route_offset = FIELD_GET(SILABS_PINCTRL_ROUTE_MASK, DT_PROP_BY_IDX(node, prop, idx)), \
.mode = Z_PINCTRL_SILABS_MODE_INIT(node), \
.dout = Z_PINCTRL_SILABS_DOUT_INIT(node)},
#define Z_PINCTRL_STATE_ABUS_INIT(node, prop, idx) \
{ \
.base_offset = \
FIELD_GET(SILABS_PINCTRL_ABUS_BUS_MASK, DT_PROP_BY_IDX(node, prop, idx)), \
.route_offset = FIELD_GET(SILABS_PINCTRL_ABUS_PERIPH_MASK, \
DT_PROP_BY_IDX(node, prop, idx)), \
.en_bit = SILABS_PINCTRL_ANALOG, \
.mode = FIELD_GET(SILABS_PINCTRL_ABUS_PARITY_MASK, \
DT_PROP_BY_IDX(node, prop, idx)), \
},
#define Z_PINCTRL_SILABS_DISPATCH(group) \
IF_ENABLED(DT_NODE_HAS_PROP(group, pins), \
(DT_FOREACH_PROP_ELEM(group, pins, Z_PINCTRL_STATE_PIN_INIT))) \
IF_ENABLED(DT_NODE_HAS_PROP(group, silabs_analog_bus), \
(DT_FOREACH_PROP_ELEM(group, silabs_analog_bus, Z_PINCTRL_STATE_ABUS_INIT)))
#define Z_PINCTRL_STATE_PINS_INIT(node_id, prop) \
{DT_FOREACH_CHILD_VARGS(DT_PHANDLE(node_id, prop), DT_FOREACH_PROP_ELEM, pins, \
Z_PINCTRL_STATE_PIN_INIT)}
{DT_FOREACH_CHILD(DT_PHANDLE(node_id, prop), Z_PINCTRL_SILABS_DISPATCH)}
#else