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pcmcia: soc_common: request legacy detect GPIO with active low

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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>
This commit is contained in:
Russell King 2016-08-31 08:49:45 +01:00
parent a494119123
commit 7bfe49785b
1 changed files with 8 additions and 5 deletions
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13
drivers/pcmcia/soc_common.c
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@ -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)