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authorwdenk <wdenk>2004-01-03 19:43:48 +0000
committerwdenk <wdenk>2004-01-03 19:43:48 +0000
commitc935d3bd8b1c7f681ad58e64bd0548e1b26a7d2f (patch)
tree2529369b185098e6d38627b7500d7450d9bab8f5 /include/asm-nios/status_led.h
parent3a473b2a6523db9cdf2b5aed22d9730b4ebc5693 (diff)
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Patches by Stephan Linz, 11 Dec 2003:
- more documentation for NIOS port - new struct nios_pio_t, struct nios_spi_t - Reconfiguration for NIOS Development Kit DK1C20: o move board related code from board/dk1c20 to board/altera/dk1c20 o create a new common source path board/altera/common and move generic flash access stuff into it o change/expand configuration file DK1C20.h - Add support for NIOS Development Kit DK1S10 - Add status LED support for NIOS systems - Add dual 7-segment LED support for Altera NIOS DevKits
Diffstat (limited to 'include/asm-nios/status_led.h')
-rw-r--r--include/asm-nios/status_led.h132
1 files changed, 132 insertions, 0 deletions
diff --git a/include/asm-nios/status_led.h b/include/asm-nios/status_led.h
new file mode 100644
index 0000000..241c917
--- /dev/null
+++ b/include/asm-nios/status_led.h
@@ -0,0 +1,132 @@
+/*
+ * (C) Copyright 2003, Li-Pro.Net <www.li-pro.net>
+ * Stephan Linz <linz@li-pro.net>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * asm-nios/status_led.h
+ *
+ * NIOS PIO based status led support functions
+ */
+
+#ifndef __ASM_STATUS_LED_H__
+#define __ASM_STATUS_LED_H__
+
+#include <nios-io.h>
+
+/* led_id_t is unsigned int mask */
+typedef unsigned int led_id_t;
+
+#ifdef STATUS_LED_WRONLY /* emulate read access */
+static led_id_t __led_portval = 0;
+#endif
+
+static inline void __led_init (led_id_t mask, int state)
+{
+ nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
+
+#ifdef STATUS_LED_WRONLY /* emulate read access */
+
+#if (STATUS_LED_ACTIVE == 0)
+ if (state == STATUS_LED_ON)
+ __led_portval &= ~mask;
+ else
+ __led_portval |= mask;
+#else
+ if (state == STATUS_LED_ON)
+ __led_portval |= mask;
+ else
+ __led_portval &= ~mask;
+#endif
+
+ piop->data = __led_portval;
+
+#else /* !STATUS_LED_WRONLY */
+
+#if (STATUS_LED_ACTIVE == 0)
+ if (state == STATUS_LED_ON)
+ piop->data &= ~mask;
+ else
+ piop->data |= mask;
+#else
+ if (state == STATUS_LED_ON)
+ piop->data |= mask;
+ else
+ piop->data &= ~mask;
+#endif
+
+ piop->direction |= mask;
+
+#endif /* STATUS_LED_WRONLY */
+}
+
+static inline void __led_toggle (led_id_t mask)
+{
+ nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
+
+#ifdef STATUS_LED_WRONLY /* emulate read access */
+
+ __led_portval ^= mask;
+ piop->data = __led_portval;
+
+#else /* !STATUS_LED_WRONLY */
+
+ piop->data ^= mask;
+
+#endif /* STATUS_LED_WRONLY */
+}
+
+static inline void __led_set (led_id_t mask, int state)
+{
+ nios_pio_t *piop = (nios_pio_t*)STATUS_LED_BASE;
+
+#ifdef STATUS_LED_WRONLY /* emulate read access */
+
+#if (STATUS_LED_ACTIVE == 0)
+ if (state == STATUS_LED_ON)
+ __led_portval &= ~mask;
+ else
+ __led_portval |= mask;
+#else
+ if (state == STATUS_LED_ON)
+ __led_portval |= mask;
+ else
+ __led_portval &= ~mask;
+#endif
+
+ piop->data = __led_portval;
+
+#else /* !STATUS_LED_WRONLY */
+
+#if (STATUS_LED_ACTIVE == 0)
+ if (state == STATUS_LED_ON)
+ piop->data &= ~mask;
+ else
+ piop->data |= mask;
+#else
+ if (state == STATUS_LED_ON)
+ piop->data |= mask;
+ else
+ piop->data &= ~mask;
+#endif
+
+#endif /* STATUS_LED_WRONLY */
+}
+
+#endif /* __ASM_STATUS_LED_H__ */