The patch below adds a functions to Chip Common and PCI core drivers to
access the GPIO lines.
Signed-off-by: Aurelien Jarno <aurelien@xxxxxxxxxxx>
--- a/drivers/ssb/driver_chipcommon.c
+++ b/drivers/ssb/driver_chipcommon.c
@@ -39,6 +39,14 @@
ssb_write32(cc->dev, offset, value);
}
+static inline void chipco_write32_masked(struct ssb_chipcommon *cc, u16 offset,
+ u32 mask, u32 value)
+{
+ value &= mask;
+ value |= chipco_read32(cc, offset) & ~mask;
+ chipco_write32(cc, offset, value);
+}
+
void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
enum ssb_clkmode mode)
{
@@ -344,6 +352,21 @@
chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
}
+u32 ssb_chipco_gpio_in(struct ssb_chipcommon *cc, u32 mask)
+{
+ return chipco_read32(cc, SSB_CHIPCO_GPIOIN) & mask;
+}
+
+void ssb_chipco_gpio_out(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+ return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUT, mask, value);
+}
+
+void ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value)
+{
+ return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUTEN, mask, value);
+}
+
#ifdef CONFIG_SSB_SERIAL
int ssb_chipco_serial_init(struct ssb_chipcommon *cc,
struct ssb_serial_port *ports)
--- a/drivers/ssb/driver_extif.c
+++ b/drivers/ssb/driver_extif.c
@@ -27,6 +27,14 @@
ssb_write32(extif->dev, offset, value);
}
+static inline void extif_write32_masked(struct ssb_extif *extif, u16 offset,
+ u32 mask, u32 value)
+{
+ value &= mask;
+ value |= extif_read32(extif, offset) & ~mask;
+ extif_write32(extif, offset, value);
+}
+
#ifdef CONFIG_SSB_SERIAL
static bool serial_exists(u8 *regs)
{
@@ -102,3 +110,20 @@
*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
}
+u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
+{
+ return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;
+}
+
+void ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value)
+{
+ return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0),
+ mask, value);
+}
+
+void ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value)
+{
+ return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0),
+ mask, value);
+}
+
--- a/include/linux/ssb/ssb_driver_chipcommon.h
+++ b/include/linux/ssb/ssb_driver_chipcommon.h
@@ -382,6 +382,12 @@
extern void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc,
u32 ticks);
+u32 ssb_chipco_gpio_in(struct ssb_chipcommon *cc, u32 mask);
+
+void ssb_chipco_gpio_out(struct ssb_chipcommon *cc, u32 mask, u32 value);
+
+void ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value);
+
#ifdef CONFIG_SSB_SERIAL
extern int ssb_chipco_serial_init(struct ssb_chipcommon *cc,
struct ssb_serial_port *ports);
--- a/include/linux/ssb/ssb_driver_extif.h
+++ b/include/linux/ssb/ssb_driver_extif.h
@@ -171,6 +171,12 @@
extern void ssb_extif_timing_init(struct ssb_extif *extif,
unsigned long ns);
+u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask);
+
+void ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value);
+
+void ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value);
+
#ifdef CONFIG_SSB_SERIAL
extern int ssb_extif_serial_init(struct ssb_extif *extif,
struct ssb_serial_port *ports);
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' aurel32@xxxxxxxxxx | aurelien@xxxxxxxxxxx
`- people.debian.org/~aurel32 | www.aurel32.net
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