[ARM] 4964/1: htc-pasic3: MFD driver for PASIC3 LED control + DS1WM chip

This driver will provide registers, clocks and GPIOs of
the HTC PASIC3 (AIC3) and PASIC2 (AIC2) chips to the
ds1wm and leds-pasic3 drivers.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 55 insertions, 0 deletions

diff --git a/include/linux/mfd/htc-pasic3.h b/include/linux/mfd/htc-pasic3.h
new file mode 100644
index 000000000000..b4294f12c4f8
--- /dev/null
+++ b/include/linux/mfd/htc-pasic3.h
@@ -0,0 +1,55 @@
+/*
+ * HTC PASIC3 driver - LEDs and DS1WM
+ *
+ * Copyright (c) 2007 Philipp Zabel <philipp.zabel@gmail.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+
+#ifndef __PASIC3_H
+#define __PASIC3_H
+
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+
+extern void pasic3_write_register(struct device *dev, u32 reg, u8 val);
+extern u8 pasic3_read_register(struct device *dev, u32 reg);
+
+/*
+ * mask for registers 0x20,0x21,0x22
+ */
+#define PASIC3_MASK_LED0 0x04
+#define PASIC3_MASK_LED1 0x08
+#define PASIC3_MASK_LED2 0x40
+
+/*
+ * bits in register 0x06
+ */
+#define PASIC3_BIT2_LED0 0x08
+#define PASIC3_BIT2_LED1 0x10
+#define PASIC3_BIT2_LED2 0x20
+
+struct pasic3_led {
+        struct led_classdev         led;
+        unsigned int                hw_num;
+        unsigned int                bit2;
+        unsigned int                mask;
+        struct pasic3_leds_machinfo *pdata;
+};
+
+struct pasic3_leds_machinfo {
+        unsigned int      num_leds;
+        unsigned int      power_gpio;
+        struct pasic3_led *leds;
+};
+
+struct pasic3_platform_data {
+        struct pasic3_leds_machinfo *led_pdata;
+        unsigned int                 bus_shift;
+        unsigned int                 clock_rate;
+};
+
+#endif