imrcpan/freebsd
1
0 Fork 0
mirror of https://github.com/freebsd/freebsd-src.git synced 2026-10-28 11:25:21 +01:00
Code Issues Packages Projects Releases Wiki Activity

jh7110_gpio: handle preset high/low

Browse Source 
Take action in the presence of the GPIO_PIN_PRESET_LOW/HIGH flags. This
part of the GPIO interface seems to be unused, but is trivially
implemented in our driver.

Reviewed by:	Brian Scott <[email protected]>
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D59991
This commit is contained in:
Mitchell Horne committed 2026-09-30 16:26:04 -03:00
1 parent 1bc81d3bb0
commit 6f9d0f02e7
1 file changed
+25 -6
Download Patch File Download Diff File Expand all files Collapse all files
sys/riscv/starfive/jh7110_gpio.c
+25 -6
View File
@@ -92,6 +92,7 @@ static struct resource_spec jh7110_gpio_spec[] = {
#define JH7110_GPIO_LOCK(_sc) mtx_lock(&(_sc)->mtx)
#define JH7110_GPIO_UNLOCK(_sc) mtx_unlock(&(_sc)->mtx)
#define JH7110_GPIO_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->mtx, MA_OWNED);
#define RD4(sc, reg) bus_read_4((sc)->res, (reg))
#define WR4(sc, reg, val) bus_write_4((sc)->res, (reg), (val))
@@ -145,11 +146,26 @@ jh7110_gpio_pin_get(device_t dev, uint32_t pin, uint32_t *val)
return (0);
}
static void
jh7110_gpio_pin_set_locked(struct jh7110_gpio_softc *sc, uint32_t pin,
uint32_t val)
{
uint32_t reg;
JH7110_GPIO_ASSERT_LOCKED(sc);
MPASS(pin <= sc->maxpin);
reg = RD4(sc, sc->doutcfg + GPIO_RW_OFFSET(pin));
reg &= ~(DATA_OUT_MASK << GPIO_SHIFT(pin));
if (val != 0)
reg |= 0x1 << GPIO_SHIFT(pin);
WR4(sc, sc->doutcfg + GPIO_RW_OFFSET(pin), reg);
}
static int
jh7110_gpio_pin_set(device_t dev, uint32_t pin, uint32_t val)
{
struct jh7110_gpio_softc *sc;
uint32_t reg;
sc = device_get_softc(dev);
@@ -157,11 +173,7 @@ jh7110_gpio_pin_set(device_t dev, uint32_t pin, uint32_t val)
return (EINVAL);
JH7110_GPIO_LOCK(sc);
reg = RD4(sc, sc->doutcfg + GPIO_RW_OFFSET(pin));
reg &= ~(DATA_OUT_MASK << GPIO_SHIFT(pin));
if (val != 0)
reg |= 0x1 << GPIO_SHIFT(pin);
WR4(sc, sc->doutcfg + GPIO_RW_OFFSET(pin), reg);
jh7110_gpio_pin_set_locked(sc, pin, val);
JH7110_GPIO_UNLOCK(sc);
return (0);
@@ -303,6 +315,13 @@ jh7110_gpio_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
WR4(sc, sc->iomuxcfg + PAD_OFFSET(pin), reg);
}
/* Handle preset values. */
if ((flags & GPIO_PIN_PRESET_LOW) != 0) {
jh7110_gpio_pin_set_locked(sc, pin, 0);
} else if ((flags & GPIO_PIN_PRESET_HIGH) != 0) {
jh7110_gpio_pin_set_locked(sc, pin, 1);
}
JH7110_GPIO_UNLOCK(sc);
return (0);