Add AT32AP CPU and AT32AP7000 SoC support

Patch by Haavard Skinnemoen, 06 Sep 2006

This patch adds support for the AT32AP CPU family and the AT32AP7000
chip, which is the first chip implementing the AVR32 architecture.

The AT32AP CPU core is a high-performance implementation featuring a
7-stage pipeline, separate instruction- and data caches, and a MMU.
For more information, please see the "AVR32 AP Technical Reference":

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

In addition to this, the AT32AP7000 chip comes with a large set of
integrated peripherals, many of which are shared with the AT91 series
of ARM-based microcontrollers from Atmel. Full data sheet is
available here:

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/cpu/at32ap/device.c b/cpu/at32ap/device.c
new file mode 100644
index 0000000..89914b6
--- /dev/null
+++ b/cpu/at32ap/device.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * 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
+ */
+#include <common.h>
+
+#include <asm/arch/platform.h>
+
+#include "sm.h"
+
+struct device_state {
+	int refcount;
+};
+
+static struct device_state device_state[NR_DEVICES];
+
+static int claim_resource(const struct resource *res)
+{
+	int ret = 0;
+
+	switch (res->type) {
+	case RESOURCE_GPIO:
+		ret = gpio_set_func(res->u.gpio.gpio_dev,
+				    res->u.gpio.start,
+				    res->u.gpio.nr_pins,
+				    res->u.gpio.func);
+		break;
+	case RESOURCE_CLOCK:
+		ret = pm_enable_clock(res->u.clock.id, res->u.clock.index);
+		break;
+	}
+
+	return ret;
+}
+
+static void free_resource(const struct resource *res)
+{
+	switch (res->type) {
+	case RESOURCE_GPIO:
+		gpio_free(res->u.gpio.gpio_dev, res->u.gpio.start,
+			  res->u.gpio.nr_pins);
+		break;
+	case RESOURCE_CLOCK:
+		pm_disable_clock(res->u.clock.id, res->u.clock.index);
+		break;
+	}
+}
+
+static int init_dev(const struct device *dev)
+{
+	unsigned int i;
+	int ret = 0;
+
+	for (i = 0; i < dev->nr_resources; i++) {
+		ret = claim_resource(&dev->resource[i]);
+		if (ret)
+			goto cleanup;
+	}
+
+	return 0;
+
+cleanup:
+	while (i--)
+		free_resource(&dev->resource[i]);
+
+	return ret;
+}
+
+const struct device *get_device(enum device_id devid)
+{
+	struct device_state *devstate;
+	const struct device *dev;
+	unsigned long flags;
+	int initialized = 0;
+	int ret = 0;
+
+	devstate = &device_state[devid];
+	dev = &chip_device[devid];
+
+	flags = disable_interrupts();
+	if (devstate->refcount++)
+		initialized = 1;
+	if (flags)
+		enable_interrupts();
+
+	if (!initialized)
+		ret = init_dev(dev);
+
+	return ret ? NULL : dev;
+}
+
+void put_device(const struct device *dev)
+{
+	struct device_state *devstate;
+	unsigned long devid, flags;
+
+	devid = (unsigned long)(dev - chip_device) / sizeof(struct device);
+	devstate = &device_state[devid];
+
+	flags = disable_interrupts();
+	devstate--;
+	if (!devstate) {
+		unsigned int i;
+		for (i = 0; i < dev->nr_resources; i++)
+			free_resource(&dev->resource[i]);
+	}
+	if (flags)
+		enable_interrupts();
+}