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authorRussell King <rmk+kernel@armlinux.org.uk>2016-08-31 08:49:45 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2016-09-22 09:38:58 +0100
commit7bfe49785b28931297d9e6e811f88732914f8ff3 (patch)
tree9afa3a81916653b407cec0ab4380cf396a24f849
parenta4941191235e0fee2dd8bad3b7c61478f229c962 (diff)
downloadlinux-7bfe49785b28931297d9e6e811f88732914f8ff3.tar.bz2
pcmcia: soc_common: request legacy detect GPIO with active low
Request the legacy card detect signal with the active low property and remove our own negation of the detection value. This allows us to use the firmware-defined polarities rather than hard-coding it into the driver. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--drivers/pcmcia/soc_common.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c
index e499c2b8d7df..4036454b2785 100644
--- a/drivers/pcmcia/soc_common.c
+++ b/drivers/pcmcia/soc_common.c
@@ -165,8 +165,14 @@ static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
if (gpio_is_valid(skt->stat[i].gpio)) {
+ unsigned long flags = GPIOF_IN;
+
+ /* CD is active low by default */
+ if (i == SOC_STAT_CD)
+ flags |= GPIOF_ACTIVE_LOW;
+
ret = devm_gpio_request_one(skt->socket.dev.parent,
- skt->stat[i].gpio, GPIOF_IN,
+ skt->stat[i].gpio, flags,
skt->stat[i].name);
if (ret) {
__soc_pcmcia_hw_shutdown(skt, i);
@@ -233,11 +239,8 @@ static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
state.bvd1 = 1;
state.bvd2 = 1;
- /* CD is active low by default */
if (skt->stat[SOC_STAT_CD].desc)
- state.detect = !gpiod_get_raw_value(skt->stat[SOC_STAT_CD].desc);
-
- /* RDY and BVD are active high by default */
+ state.detect = !!gpiod_get_value(skt->stat[SOC_STAT_CD].desc);
if (skt->stat[SOC_STAT_RDY].desc)
state.ready = !!gpiod_get_value(skt->stat[SOC_STAT_RDY].desc);
if (skt->stat[SOC_STAT_BVD1].desc)