PCMCIA: soc_common: add GPIO support for card status signals

Add GPIO support for reading the card status (card detect, ready,
battery voltage detect) signals into soc_common code.  As we want
interrupts from these GPIOs, this takes over the old irq handling
infrastructure for card status signals, which will now be managed
entirely by the soc_common code.

Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h
index 3ff7ead11b1d..ebdfa6c16308 100644
--- a/drivers/pcmcia/soc_common.h
+++ b/drivers/pcmcia/soc_common.h
@@ -50,6 +50,16 @@ struct soc_pcmcia_socket {
         struct resource         res_attr;
         void __iomem            *virt_io;
 
+        struct {
+                int             gpio;
+                unsigned int    irq;
+                const char      *name;
+        } stat[4];
+#define SOC_STAT_CD             0       /* Card detect */
+#define SOC_STAT_BVD1           1       /* BATDEAD / IOSTSCHG */
+#define SOC_STAT_BVD2           2       /* BATWARN / IOSPKR */
+#define SOC_STAT_RDY            3       /* Ready / Interrupt */
+
         unsigned int            irq_state;
 
         struct timer_list       poll_timer;