[MFD] Add code UCB1200/UCB1300 assabet platform support

Add support for Intel assabet specific board support for
UCB1200/UCB1300 devices.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c
new file mode 100644
index 000000000000..e325fa71f38b
--- /dev/null
+++ b/drivers/mfd/ucb1x00-assabet.c
@@ -0,0 +1,73 @@
+/*
+ *  linux/drivers/mfd/ucb1x00-assabet.c
+ *
+ *  Copyright (C) 2001-2003 Russell King, All Rights Reserved.
+ *
+ * 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.
+ *
+ *  We handle the machine-specific bits of the UCB1x00 driver here.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/proc_fs.h>
+#include <linux/device.h>
+
+#include <asm/dma.h>
+
+#include "ucb1x00.h"
+
+#define UCB1X00_ATTR(name,input)\
+static ssize_t name##_show(struct class_device *dev, char *buf) \
+{                                                               \
+        struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);         \
+        int val;                                                \
+        ucb1x00_adc_enable(ucb);                                \
+        val = ucb1x00_adc_read(ucb, input, UCB_NOSYNC);         \
+        ucb1x00_adc_disable(ucb);                               \
+        return sprintf(buf, "%d\n", val);                       \
+}                                                               \
+static CLASS_DEVICE_ATTR(name,0444,name##_show,NULL)
+
+UCB1X00_ATTR(vbatt, UCB_ADC_INP_AD1);
+UCB1X00_ATTR(vcharger, UCB_ADC_INP_AD0);
+UCB1X00_ATTR(batt_temp, UCB_ADC_INP_AD2);
+
+static int ucb1x00_assabet_add(struct ucb1x00_dev *dev)
+{
+        class_device_create_file(&dev->ucb->cdev, &class_device_attr_vbatt);
+        class_device_create_file(&dev->ucb->cdev, &class_device_attr_vcharger);
+        class_device_create_file(&dev->ucb->cdev, &class_device_attr_batt_temp);
+        return 0;
+}
+
+static void ucb1x00_assabet_remove(struct ucb1x00_dev *dev)
+{
+        class_device_remove_file(&dev->ucb->cdev, &class_device_attr_batt_temp);
+        class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vcharger);
+        class_device_remove_file(&dev->ucb->cdev, &class_device_attr_vbatt);
+}
+
+static struct ucb1x00_driver ucb1x00_assabet_driver = {
+        .add    = ucb1x00_assabet_add,
+        .remove = ucb1x00_assabet_remove,
+};
+
+static int __init ucb1x00_assabet_init(void)
+{
+        return ucb1x00_register_driver(&ucb1x00_assabet_driver);
+}
+
+static void __exit ucb1x00_assabet_exit(void)
+{
+        ucb1x00_unregister_driver(&ucb1x00_assabet_driver);
+}
+
+module_init(ucb1x00_assabet_init);
+module_exit(ucb1x00_assabet_exit);
+
+MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
+MODULE_DESCRIPTION("Assabet noddy testing only example ADC driver");
+MODULE_LICENSE("GPL");