[MFD] Add code UCB1200/UCB1300 assabet platform support
Russell King [Sun, 11 Sep 2005 09:27:23 +0000 (10:27 +0100)]
Add support for Intel assabet specific board support for
UCB1200/UCB1300 devices.

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

drivers/mfd/Makefile
drivers/mfd/ucb1x00-assabet.c [new file with mode: 0644]

index a05cd15..adb29b5 100644 (file)
@@ -6,3 +6,7 @@ obj-$(CONFIG_MCP)               += mcp-core.o
 obj-$(CONFIG_MCP_SA11X0)       += mcp-sa11x0.o
 obj-$(CONFIG_MCP_UCB1200)      += ucb1x00-core.o
 obj-$(CONFIG_MCP_UCB1200_TS)   += ucb1x00-ts.o
+
+ifeq ($(CONFIG_SA1100_ASSABET),y)
+obj-$(CONFIG_MCP_UCB1200)      += ucb1x00-assabet.o
+endif
diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c
new file mode 100644 (file)
index 0000000..e325fa7
--- /dev/null
@@ -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");