[PATCH v2 1/3] ssb: add function to return number of gpio lines

[Hauke Mehrtens <hauke@xxxxxxxxxx>]

CC: Michael Buesch <m@xxxxxxx>
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
 drivers/ssb/embedded.c           |   12 ++++++++++++
 include/linux/ssb/ssb_embedded.h |    4 ++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/ssb/embedded.c b/drivers/ssb/embedded.c
index 9ef124f..078007c 100644
--- a/drivers/ssb/embedded.c
+++ b/drivers/ssb/embedded.c
@@ -136,6 +136,18 @@ u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
 }
 EXPORT_SYMBOL(ssb_gpio_polarity);
 
+int ssb_gpio_count(struct ssb_bus *bus)
+{
+	if (ssb_chipco_available(&bus->chipco))
+		return SSB_GPIO_CHIPCO_LINES;
+	else if (ssb_extif_available(&bus->extif))
+		return SSB_GPIO_EXTIF_LINES;
+	else
+		SSB_WARN_ON(1);
+	return 0;
+}
+EXPORT_SYMBOL(ssb_gpio_count);
+
 #ifdef CONFIG_SSB_DRIVER_GIGE
 static int gige_pci_init_callback(struct ssb_bus *bus, unsigned long data)
 {
diff --git a/include/linux/ssb/ssb_embedded.h b/include/linux/ssb/ssb_embedded.h
index 8d8dedf..f1618d2 100644
--- a/include/linux/ssb/ssb_embedded.h
+++ b/include/linux/ssb/ssb_embedded.h
@@ -7,6 +7,9 @@
 
 extern int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks);
 
+#define SSB_GPIO_EXTIF_LINES	5
+#define SSB_GPIO_CHIPCO_LINES	16
+
 /* Generic GPIO API */
 u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask);
 u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value);
@@ -14,5 +17,6 @@ u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value);
 u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value);
 u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value);
 u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value);
+int ssb_gpio_count(struct ssb_bus *bus);
 
 #endif /* LINUX_SSB_EMBEDDED_H_ */
-- 
1.7.9.5