500fe14136
This patchset provides support for LP5521 and LP5523 LED driver chips from National Semicondutor. Both drivers supports programmable engines and naturally LED class features. Documentation is provided as a part of the patchset. I created "leds" subdirectory under Documentation. Perhaps the rest of the leds* documentation should be moved there. Datasheets are freely available at National Semiconductor www pages. This patch: LP5521 chip is three channel led driver with programmable engines. Driver provides support for that chip for direct access via led class or via programmable engines. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* LP5521 LED chip driver.
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*
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* Copyright (C) 2010 Nokia Corporation
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*
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* Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef __LINUX_LP5521_H
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#define __LINUX_LP5521_H
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/* See Documentation/leds/leds-lp5521.txt */
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struct lp5521_led_config {
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u8 chan_nr;
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u8 led_current; /* mA x10, 0 if led is not connected */
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u8 max_current;
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};
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#define LP5521_CLOCK_AUTO 0
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#define LP5521_CLOCK_INT 1
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#define LP5521_CLOCK_EXT 2
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struct lp5521_platform_data {
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struct lp5521_led_config *led_config;
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u8 num_channels;
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u8 clock_mode;
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int (*setup_resources)(void);
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void (*release_resources)(void);
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void (*enable)(bool state);
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};
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#endif /* __LINUX_LP5521_H */
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