import ath hal

1 files changed, 124 insertions, 0 deletions

diff --git a/sys/dev/ath/ath_hal/ar5212/ar5212_gpio.c b/sys/dev/ath/ath_hal/ar5212/ar5212_gpio.c
new file mode 100644
index 0000000..eb0022f
--- /dev/null
+++ b/sys/dev/ath/ath_hal/ar5212/ar5212_gpio.c
@@ -0,0 +1,124 @@
+/*
+ * 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: ar5212_gpio.c,v 1.3 2008/11/10 04:08:03 sam Exp $
+ */
+#include "opt_ah.h"
+
+#include "ah.h"
+#include "ah_internal.h"
+#include "ah_devid.h"
+#ifdef AH_DEBUG
+#include "ah_desc.h"			/* NB: for HAL_PHYERR* */
+#endif
+
+#include "ar5212/ar5212.h"
+#include "ar5212/ar5212reg.h"
+#include "ar5212/ar5212phy.h"
+
+#define	AR_NUM_GPIO	6		/* 6 GPIO pins */
+#define	AR_GPIOD_MASK	0x0000002F	/* GPIO data reg r/w mask */
+
+/*
+ * Configure GPIO Output lines
+ */
+HAL_BOOL
+ar5212GpioCfgOutput(struct ath_hal *ah, uint32_t gpio)
+{
+	HALASSERT(gpio < AR_NUM_GPIO);
+
+	/*
+	 * NB: AR_GPIOCR_CR_A(pin) is all 1's so there's no need
+	 *     to clear the field before or'ing in the new value.
+	 */
+	OS_REG_WRITE(ah, AR_GPIOCR, 
+		  OS_REG_READ(ah, AR_GPIOCR) | AR_GPIOCR_CR_A(gpio));
+
+	return AH_TRUE;
+}
+
+/*
+ * Configure GPIO Input lines
+ */
+HAL_BOOL
+ar5212GpioCfgInput(struct ath_hal *ah, uint32_t gpio)
+{
+	HALASSERT(gpio < AR_NUM_GPIO);
+
+	OS_REG_WRITE(ah, AR_GPIOCR, 
+		  (OS_REG_READ(ah, AR_GPIOCR) &~ AR_GPIOCR_CR_A(gpio))
+		| AR_GPIOCR_CR_N(gpio));
+
+	return AH_TRUE;
+}
+
+/*
+ * Once configured for I/O - set output lines
+ */
+HAL_BOOL
+ar5212GpioSet(struct ath_hal *ah, uint32_t gpio, uint32_t val)
+{
+	uint32_t reg;
+
+	HALASSERT(gpio < AR_NUM_GPIO);
+
+	reg =  OS_REG_READ(ah, AR_GPIODO);
+	reg &= ~(1 << gpio);
+	reg |= (val&1) << gpio;
+
+	OS_REG_WRITE(ah, AR_GPIODO, reg);
+	return AH_TRUE;
+}
+
+/*
+ * Once configured for I/O - get input lines
+ */
+uint32_t
+ar5212GpioGet(struct ath_hal *ah, uint32_t gpio)
+{
+	if (gpio < AR_NUM_GPIO) {
+		uint32_t val = OS_REG_READ(ah, AR_GPIODI);
+		val = ((val & AR_GPIOD_MASK) >> gpio) & 0x1;
+		return val;
+	} else  {
+		return 0xffffffff;
+	}
+}
+
+/*
+ * Set the GPIO Interrupt
+ */
+void
+ar5212GpioSetIntr(struct ath_hal *ah, u_int gpio, uint32_t ilevel)
+{
+	uint32_t val;
+
+	/* XXX bounds check gpio */
+	val = OS_REG_READ(ah, AR_GPIOCR);
+	val &= ~(AR_GPIOCR_CR_A(gpio) |
+		 AR_GPIOCR_INT_MASK | AR_GPIOCR_INT_ENA | AR_GPIOCR_INT_SEL);
+	val |= AR_GPIOCR_CR_N(gpio) | AR_GPIOCR_INT(gpio) | AR_GPIOCR_INT_ENA;
+	if (ilevel)
+		val |= AR_GPIOCR_INT_SELH;	/* interrupt on pin high */
+	else
+		val |= AR_GPIOCR_INT_SELL;	/* interrupt on pin low */
+
+	/* Don't need to change anything for low level interrupt. */
+	OS_REG_WRITE(ah, AR_GPIOCR, val);
+
+	/* Change the interrupt mask. */
+	(void) ar5212SetInterrupts(ah, AH5212(ah)->ah_maskReg | HAL_INT_GPIO);
+}