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

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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>
This commit is contained in:
Philipp Zabel
2008-04-12 13:25:41 +01:00
committed by Russell King
parent 481ea5a16a
commit 5dc3339aa5
4 changed files with 329 additions and 0 deletions
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55
include/linux/mfd/htc-pasic3.h Normal file
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/*
* 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