linux-hardened/include/linux/leds-lp5521.h
Arun Murthy 61a83932b8 leds-lp5521: modify the way of setting led device name
Currently the led device name is fetched from the device_type in
I2C_BOARD_INFO which comes from the platform data.  This name is in turn
used to create an entry in sysfs.

If there exists two or more lp5521 on a particular platform, the
device_type in I2C_BOARD_INFO has to be the same, else lp5521 driver probe
wont be called and if used so, results in run time warning "cannot create
sysfs with same name" and hence a failure.

The name that is used to create sysfs entry is to be passed by the struct
led_platform_data.  Hence adding an element of type const char * and
change in lp5521 driver to use this name in creating the led device if
present else use the name obtained by I2C_BOARD_INFO.

Signed-off-by: Arun Murthy <arun.murthy@stericsson.com>
Acked-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:06 -08:00

48 lines
1.3 KiB
C

/*
* LP5521 LED chip driver.
*
* Copyright (C) 2010 Nokia Corporation
*
* Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef __LINUX_LP5521_H
#define __LINUX_LP5521_H
/* See Documentation/leds/leds-lp5521.txt */
struct lp5521_led_config {
u8 chan_nr;
u8 led_current; /* mA x10, 0 if led is not connected */
u8 max_current;
};
#define LP5521_CLOCK_AUTO 0
#define LP5521_CLOCK_INT 1
#define LP5521_CLOCK_EXT 2
struct lp5521_platform_data {
struct lp5521_led_config *led_config;
u8 num_channels;
u8 clock_mode;
int (*setup_resources)(void);
void (*release_resources)(void);
void (*enable)(bool state);
const char *label;
};
#endif /* __LINUX_LP5521_H */