diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2016-08-31 08:49:46 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2016-09-22 09:39:01 +0100 |
| commit | a1d0500261e788f9b1d068e3167b2a77ad0abfc4 (patch) | |
| tree | d9b98466428f41f3df211bf65cd414c690abada6 /drivers/pcmcia/soc_common.c | |
| parent | 6ac95d821216f3baab16821a893d52ab385824be (diff) | |
| download | linux-a1d0500261e788f9b1d068e3167b2a77ad0abfc4.tar.bz2 | |
pcmcia: soc_common: add CF socket state helper
Add a helper to get the voltage state of CF sockets, where the voltage
sense pins are not wired up. Switch assabet and cerf to use this
helper.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers/pcmcia/soc_common.c')
| -rw-r--r-- | drivers/pcmcia/soc_common.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c index 9373d997d0cf..6d0ec291f475 100644 --- a/drivers/pcmcia/soc_common.c +++ b/drivers/pcmcia/soc_common.c @@ -229,6 +229,18 @@ static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt) irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE); } +/* + * The CF 3.0 specification says that cards tie VS1 to ground and leave + * VS2 open. Many implementations do not wire up the VS signals, so we + * provide hard-coded values as per the CF 3.0 spec. + */ +void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->vs_3v = 1; +} +EXPORT_SYMBOL_GPL(soc_common_cf_socket_state); + static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) { struct pcmcia_state state; |