summaryrefslogtreecommitdiffstats
path: root/firmware/target/arm
diff options
context:
space:
mode:
Diffstat (limited to 'firmware/target/arm')
-rw-r--r--firmware/target/arm/imx233/pinctrl-imx233.c77
-rw-r--r--firmware/target/arm/imx233/pinctrl-imx233.h7
2 files changed, 84 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/pinctrl-imx233.c b/firmware/target/arm/imx233/pinctrl-imx233.c
new file mode 100644
index 0000000000..7997292fcb
--- /dev/null
+++ b/firmware/target/arm/imx233/pinctrl-imx233.c
@@ -0,0 +1,77 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2011 by Amaury Pouly
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "system.h"
+#include "system-target.h"
+#include "cpu.h"
+#include "pinctrl-imx233.h"
+
+static pin_irq_cb_t pin_cb[3][32]; /* 3 banks, 32 pins/bank */
+
+static void INT_GPIO(int bank)
+{
+ uint32_t fire = HW_PINCTRL_IRQSTAT(bank) & HW_PINCTRL_IRQEN(bank);
+ for(int pin = 0; pin < 32; pin++)
+ if(fire & (1 << pin))
+ {
+ pin_irq_cb_t cb = pin_cb[bank][pin];
+ imx233_setup_pin_irq(bank, pin, false, false, false, NULL);
+ if(cb)
+ cb(bank, pin);
+ }
+}
+
+void INT_GPIO0(void)
+{
+ INT_GPIO(0);
+}
+
+void INT_GPIO1(void)
+{
+ INT_GPIO(1);
+}
+
+void INT_GPIO2(void)
+{
+ INT_GPIO(2);
+}
+
+void imx233_setup_pin_irq(int bank, int pin, bool enable_int,
+ bool level, bool polarity, pin_irq_cb_t cb)
+{
+ __REG_CLR(HW_PINCTRL_PIN2IRQ(bank)) = 1 << pin;
+ __REG_CLR(HW_PINCTRL_IRQEN(bank)) = 1 << pin;
+ __REG_CLR(HW_PINCTRL_IRQSTAT(bank))= 1 << pin;
+ pin_cb[bank][pin] = cb;
+ if(enable_int)
+ {
+ if(level)
+ __REG_SET(HW_PINCTRL_IRQLEVEL(bank)) = 1 << pin;
+ else
+ __REG_CLR(HW_PINCTRL_IRQLEVEL(bank)) = 1 << pin;
+ if(polarity)
+ __REG_SET(HW_PINCTRL_IRQPOL(bank)) = 1 << pin;
+ else
+ __REG_CLR(HW_PINCTRL_IRQPOL(bank)) = 1 << pin;
+ __REG_SET(HW_PINCTRL_PIN2IRQ(bank)) = 1 << pin;
+ __REG_SET(HW_PINCTRL_IRQEN(bank)) = 1 << pin;
+ imx233_enable_interrupt(INT_SRC_GPIO(bank), true);
+ }
+}
diff --git a/firmware/target/arm/imx233/pinctrl-imx233.h b/firmware/target/arm/imx233/pinctrl-imx233.h
index a2e02adec4..ec23410442 100644
--- a/firmware/target/arm/imx233/pinctrl-imx233.h
+++ b/firmware/target/arm/imx233/pinctrl-imx233.h
@@ -51,6 +51,8 @@
#define PINCTRL_DRIVE_12mA 2
#define PINCTRL_DRIVE_16mA 3 /* not available on all pins */
+typedef void (*pin_irq_cb_t)(int bank, int pin);
+
static inline void imx233_pinctrl_init(void)
{
__REG_CLR(HW_PINCTRL_CTRL) = __BLOCK_CLKGATE | __BLOCK_SFTRST;
@@ -121,4 +123,9 @@ static inline void imx233_enable_pin_pullup_mask(unsigned bank, uint32_t pin_msk
__REG_CLR(HW_PINCTRL_PULL(bank)) = pin_msk;
}
+/** On irq, the pin irq interrupt is disable and then cb is called;
+ * the setup_pin_irq function needs to be called again to enable it again */
+void imx233_setup_pin_irq(int bank, int pin, bool enable_int,
+ bool level, bool polarity, pin_irq_cb_t cb);
+
#endif /* __PINCTRL_IMX233_H__ */