gpio: Add GPIO driver framework for Marvell SoCs

This patch adds generic GPIO driver framework support for Marvell SoCs.

To enable GPIO driver define CONFIG_MARVELL_GPIO and for GPIO commands
define CONFIG_CMD_GPIO in your board configuration file.

Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>

1 files changed, 74 insertions, 0 deletions

diff --git a/drivers/gpio/mvgpio.h b/drivers/gpio/mvgpio.h
new file mode 100644
index 0000000..9688797
--- /dev/null
+++ b/drivers/gpio/mvgpio.h
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef __MVGPIO_H__
+#define __MVGPIO_H__
+
+#include <common.h>
+
+#ifdef CONFIG_SHEEVA_88SV331xV5
+/*
+ * GPIO Register map for SHEEVA 88SV331xV5
+ */
+struct gpio_reg {
+	u32 gplr;	/* Pin Level Register - 0x0000 */
+	u32 pad0[2];
+	u32 gpdr;	/* Pin Direction Register - 0x000C */
+	u32 pad1[2];
+	u32 gpsr;	/* Pin Output Set Register - 0x0018 */
+	u32 pad2[2];
+	u32 gpcr;	/* Pin Output Clear Register - 0x0024 */
+	u32 pad3[2];
+	u32 grer;	/* Rising-Edge Detect Enable Register - 0x0030 */
+	u32 pad4[2];
+	u32 gfer;	/* Falling-Edge Detect Enable Register - 0x003C */
+	u32 pad5[2];
+	u32 gedr;	/* Edge Detect Status Register - 0x0048 */
+	u32 pad6[2];
+	u32 gsdr;	/* Bitwise Set of GPIO Direction Register - 0x0054 */
+	u32 pad7[2];
+	u32 gcdr;	/* Bitwise Clear of GPIO Direction Register - 0x0060 */
+	u32 pad8[2];
+	u32 gsrer;	/* Bitwise Set of Rising-Edge Detect Enable
+			   Register - 0x006C */
+	u32 pad9[2];
+	u32 gcrer;	/* Bitwise Clear of Rising-Edge Detect Enable
+			   Register - 0x0078 */
+	u32 pad10[2];
+	u32 gsfer;	/* Bitwise Set of Falling-Edge Detect Enable
+			   Register - 0x0084 */
+	u32 pad11[2];
+	u32 gcfer;	/* Bitwise Clear of Falling-Edge Detect Enable
+			   Register - 0x0090 */
+	u32 pad12[2];
+	u32 apmask;	/* Bitwise Mask of Edge Detect Register - 0x009C */
+};
+#else
+#error "CPU core subversion not defined"
+#endif
+
+#endif /* __MVGPIO_H__ */