ENGR00180931-1 mvf: add MSL support for MVF platform

Add MSL support for MVF platform.

Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Signed-off-by: Alison Wang <b18965@freescale.com>
Signed-off-by: Jingchang Lu <b35083@freescale.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/arch/arm/mach-mvf/irq.c b/arch/arm/mach-mvf/irq.c
new file mode 100644
index 000000000000..c3e7b9291faa
--- /dev/null
+++ b/arch/arm/mach-mvf/irq.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <asm/hardware/gic.h>
+#include <mach/hardware.h>
+
+int mvf_register_gpios(void);
+unsigned int gpc_wake_irq[4];
+
+static int mvf_gic_irq_set_wake(struct irq_data *d, unsigned int enable)
+{
+	if ((d->irq < MXC_INT_START) || (d->irq > MXC_INT_END)) {
+		printk(KERN_ERR "Invalid irq number!\n");
+		return -EINVAL;
+	}
+
+	if (enable) {
+		gpc_wake_irq[d->irq / 32 - 1] |= 1 << (d->irq % 32);
+		printk(KERN_INFO "add wake up source irq %d\n", d->irq);
+	} else {
+		printk(KERN_INFO "remove wake up source irq %d\n", d->irq);
+		gpc_wake_irq[d->irq / 32 - 1] &= ~(1 << (d->irq % 32));
+	}
+	return 0;
+}
+void mvf_init_irq(void)
+{
+	unsigned int i;
+	void __iomem *int_router_base =
+				MVF_IO_ADDRESS(MVF_MSCM_INT_ROUTER_BASE);
+
+	/* start offset if private timer irq id, which is 29.
+	 * ID table:
+	 * Global timer, PPI -> ID27
+	 * A legacy nFIQ, PPI -> ID28
+	 * Private timer, PPI -> ID29
+	 * Watchdog timers, PPI -> ID30
+	 * A legacy nIRQ, PPI -> ID31
+	 */
+	gic_init(0, 27, MVF_IO_ADDRESS(MVF_INTD_BASE_ADDR),
+		MVF_IO_ADDRESS(MVF_SCUGIC_BASE_ADDR + 0x100));
+
+	mvf_register_gpios();
+
+	for (i = 0; i < 112; i++)
+		__raw_writew(1, int_router_base + 0x80 + 2 * i);
+}