forked from luck/tmp_suning_uos_patched
3c1ab50d0a
Allow unused leds on pca9532 to be used as gpio. The board I am working
on now has no less than 6 pca9532 chips. One chips is used for only leds,
one has 14 leds and 2 gpio and the rest of the chips are gpio only.
There is also one board in mainline which could use this capabilty;
arch/arm/mach-iop32x/n2100.c
232 { .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
233 { .type = PCA9532_TYPE_NONE }, /* reset gpio */
This patch defines a new pin type, PCA9532_TYPE_GPIO, and registers a
gpiochip if any pin has this type set. The gpio will registers all chip
pins but will filter on gpio_request.
[randy.dunlap@oracle.com: fix build when GPIOLIB is not enabled]
Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jan Weitzel <j.weitzel@phytec.de>
Cc: Juergen Kilb <j.kilb@phytec.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
/*
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* pca9532.h - platform data structure for pca9532 led controller
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*
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* Copyright (C) 2008 Riku Voipio <riku.voipio@movial.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* Datasheet: http://www.nxp.com/acrobat/datasheets/PCA9532_3.pdf
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*
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*/
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#ifndef __LINUX_PCA9532_H
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#define __LINUX_PCA9532_H
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#include <linux/leds.h>
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#include <linux/workqueue.h>
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enum pca9532_state {
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PCA9532_OFF = 0x0,
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PCA9532_ON = 0x1,
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PCA9532_PWM0 = 0x2,
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PCA9532_PWM1 = 0x3
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};
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enum pca9532_type { PCA9532_TYPE_NONE, PCA9532_TYPE_LED,
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PCA9532_TYPE_N2100_BEEP, PCA9532_TYPE_GPIO };
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struct pca9532_led {
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u8 id;
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struct i2c_client *client;
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char *name;
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struct led_classdev ldev;
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struct work_struct work;
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enum pca9532_type type;
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enum pca9532_state state;
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};
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struct pca9532_platform_data {
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struct pca9532_led leds[16];
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u8 pwm[2];
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u8 psc[2];
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int gpio_base;
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};
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#endif /* __LINUX_PCA9532_H */
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