Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest

1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/staging/solo6x10/gpio.c b/drivers/staging/solo6x10/gpio.c
new file mode 100644
index 0000000..0925e6f
--- /dev/null
+++ b/drivers/staging/solo6x10/gpio.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2010 Bluecherry, LLC www.bluecherrydvr.com
+ * Copyright (C) 2010 Ben Collins <bcollins@bluecherry.net>
+ *
+ * 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 <linux/kernel.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#include "solo6x10.h"
+
+static void solo_gpio_mode(struct solo_dev *solo_dev,
+			   unsigned int port_mask, unsigned int mode)
+{
+	int port;
+	unsigned int ret;
+
+	ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_0);
+
+	/* To set gpio */
+	for (port = 0; port < 16; port++) {
+		if (!((1 << port) & port_mask))
+			continue;
+
+		ret &= (~(3 << (port << 1)));
+		ret |= ((mode & 3) << (port << 1));
+	}
+
+	solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_0, ret);
+
+	/* To set extended gpio - sensor */
+	ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_1);
+
+	for (port = 0; port < 16; port++) {
+		if (!((1 << (port + 16)) & port_mask))
+			continue;
+
+		if (!mode)
+			ret &= ~(1 << port);
+		else
+			ret |= 1 << port;
+	}
+
+	solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_1, ret);
+}
+
+static void solo_gpio_set(struct solo_dev *solo_dev, unsigned int value)
+{
+	solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT,
+		       solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) | value);
+}
+
+static void solo_gpio_clear(struct solo_dev *solo_dev, unsigned int value)
+{
+	solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT,
+		       solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) & ~value);
+}
+
+static void solo_gpio_config(struct solo_dev *solo_dev)
+{
+	/* Video reset */
+	solo_gpio_mode(solo_dev, 0x30, 1);
+	solo_gpio_clear(solo_dev, 0x30);
+	udelay(100);
+	solo_gpio_set(solo_dev, 0x30);
+	udelay(100);
+
+	/* Warning: Don't touch the next line unless you're sure of what
+	 * you're doing: first four gpio [0-3] are used for video. */
+	solo_gpio_mode(solo_dev, 0x0f, 2);
+
+	/* We use bit 8-15 of SOLO_GPIO_CONFIG_0 for relay purposes */
+	solo_gpio_mode(solo_dev, 0xff00, 1);
+
+	/* Initially set relay status to 0 */
+	solo_gpio_clear(solo_dev, 0xff00);
+}
+
+int solo_gpio_init(struct solo_dev *solo_dev)
+{
+	solo_gpio_config(solo_dev);
+	return 0;
+}
+
+void solo_gpio_exit(struct solo_dev *solo_dev)
+{
+	solo_gpio_clear(solo_dev, 0x30);
+	solo_gpio_config(solo_dev);
+}