1 files changed, 115 insertions, 0 deletions
diff --git a/ar5416/ar5416_gpio.c b/ar5416/ar5416_gpio.c
new file mode 100644
index 0000000..e47b48b
--- /dev/null
+++ b/ar5416/ar5416_gpio.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
+ * Copyright (c) 2002-2008 Atheros Communications, Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * $Id: ar5416_gpio.c,v 1.3 2008/11/10 04:08:04 sam Exp $
+ */
+#include "opt_ah.h"
+
+#ifdef AH_SUPPORT_AR5416
+
+#include "ah.h"
+#include "ah_internal.h"
+#include "ah_devid.h"
+#ifdef AH_DEBUG
+#include "ah_desc.h"			/* NB: for HAL_PHYERR* */
+#endif
+
+#include "ar5416/ar5416.h"
+#include "ar5416/ar5416reg.h"
+#include "ar5416/ar5416phy.h"
+
+#define	AR_NUM_GPIO	6		/* 6 GPIO pins */
+#define AR_GPIO_BIT(_gpio)	(1 << _gpio)
+
+/*
+ * Configure GPIO Output lines
+ */
+HAL_BOOL
+ar5416GpioCfgOutput(struct ath_hal *ah, uint32_t gpio)
+{
+	HALASSERT(gpio < AR_NUM_GPIO);
+	OS_REG_CLR_BIT(ah, AR_GPIO_INTR_OUT, AR_GPIO_BIT(gpio));
+	return AH_TRUE;
+}
+
+/*
+ * Configure GPIO Input lines
+ */
+HAL_BOOL
+ar5416GpioCfgInput(struct ath_hal *ah, uint32_t gpio)
+{
+	HALASSERT(gpio < AR_NUM_GPIO);
+	OS_REG_SET_BIT(ah, AR_GPIO_INTR_OUT, AR_GPIO_BIT(gpio));
+	return AH_TRUE;
+}
+
+/*
+ * Once configured for I/O - set output lines
+ */
+HAL_BOOL
+ar5416GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val)
+{
+	uint32_t reg;
+
+	HALASSERT(gpio < AR_NUM_GPIO);
+	reg = MS(OS_REG_READ(ah, AR_GPIO_INTR_OUT), AR_GPIO_OUT_VAL);
+	if (val & 1)
+		reg |= AR_GPIO_BIT(gpio);
+	else 
+		reg &= ~AR_GPIO_BIT(gpio);
+		
+	OS_REG_RMW_FIELD(ah, AR_GPIO_INTR_OUT, AR_GPIO_OUT_VAL, reg);	
+	return AH_TRUE;
+}
+
+/*
+ * Once configured for I/O - get input lines
+ */
+uint32_t
+ar5416GpioGet(struct ath_hal *ah, uint32_t gpio)
+{
+	if (gpio >= AR_NUM_GPIO)
+		return 0xffffffff;
+	return ((OS_REG_READ(ah, AR_GPIO_IN) & AR_GPIO_BIT(gpio)) >> gpio);
+}
+
+/*
+ * Set the GPIO Interrupt
+ */
+void
+ar5416GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel)
+{
+	uint32_t val;
+	
+	HALASSERT(gpio < AR_NUM_GPIO);
+	/* XXX bounds check gpio */
+	val = MS(OS_REG_READ(ah, AR_GPIO_INTR_OUT), AR_GPIO_INTR_CTRL);
+	if (ilevel)		/* 0 == interrupt on pin high */
+		val &= ~AR_GPIO_BIT(gpio);
+	else			/* 1 == interrupt on pin low */
+		val |= AR_GPIO_BIT(gpio);
+	OS_REG_RMW_FIELD(ah, AR_GPIO_INTR_OUT, AR_GPIO_INTR_CTRL, val);
+
+	/* Change the interrupt mask. */
+	val = MS(OS_REG_READ(ah, AR_INTR_ASYNC_ENABLE), AR_INTR_GPIO);
+	val |= AR_GPIO_BIT(gpio);
+	OS_REG_RMW_FIELD(ah, AR_INTR_ASYNC_ENABLE, AR_INTR_GPIO, val);
+
+	val = MS(OS_REG_READ(ah, AR_INTR_ASYNC_MASK), AR_INTR_GPIO);
+	val |= AR_GPIO_BIT(gpio);
+	OS_REG_RMW_FIELD(ah, AR_INTR_ASYNC_MASK, AR_INTR_GPIO, val);	
+}
+#endif  /* AH_SUPPORT_AR5416 */