pcmcia: soc_common: add support for reset and bus enable GPIOs
Add support to soc_common for controlling reset and bus enable GPIOs
from within the generic soc_common layer, rather than having
individual drivers having to perform this themselves.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c
index 4036454..f772127 100644
--- a/drivers/pcmcia/soc_common.c
+++ b/drivers/pcmcia/soc_common.c
@@ -119,6 +119,7 @@
if (skt->ops->hw_shutdown)
skt->ops->hw_shutdown(skt);
+
clk_disable_unprepare(skt->clk);
}
@@ -286,6 +287,21 @@
ret = skt->ops->configure_socket(skt, state);
if (ret == 0) {
+ struct gpio_desc *descs[2];
+ int values[2], n = 0;
+
+ if (skt->gpio_reset) {
+ descs[n] = skt->gpio_reset;
+ values[n++] = !!(state->flags & SS_RESET);
+ }
+ if (skt->gpio_bus_enable) {
+ descs[n] = skt->gpio_bus_enable;
+ values[n++] = !!(state->flags & SS_OUTPUT_ENA);
+ }
+
+ if (n)
+ gpiod_set_array_value_cansleep(n, descs, values);
+
/*
* This really needs a better solution. The IRQ
* may or may not be claimed by the driver.