include/linux/leds-lp5521.h

   1 /*
   2  * LP5521 LED chip driver.
   3  *
   4  * Copyright (C) 2010 Nokia Corporation
   5  *
   6  * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  */
  22
  23 #ifndef __LINUX_LP5521_H
  24 #define __LINUX_LP5521_H
  25
  26 /* See Documentation/leds/leds-lp5521.txt */
  27
  28 struct lp5521_led_config {
  29         char            *name;
  30         u8              chan_nr;
  31         u8              led_current; /* mA x10, 0 if led is not connected */
  32         u8              max_current;
  33 };
  34
  35 struct lp5521_led_pattern {
  36         u8 *r;
  37         u8 *g;
  38         u8 *b;
  39         u8 size_r;
  40         u8 size_g;
  41         u8 size_b;
  42 };
  43
  44 #define LP5521_CLOCK_AUTO       0
  45 #define LP5521_CLOCK_INT        1
  46 #define LP5521_CLOCK_EXT        2
  47
  48 /* Bits in CONFIG register */
  49 #define LP5521_PWM_HF                   0x40    /* PWM: 0 = 256Hz, 1 = 558Hz */
  50 #define LP5521_PWRSAVE_EN               0x20    /* 1 = Power save mode */
  51 #define LP5521_CP_MODE_OFF              0       /* Charge pump (CP) off */
  52 #define LP5521_CP_MODE_BYPASS           8       /* CP forced to bypass mode */
  53 #define LP5521_CP_MODE_1X5              0x10    /* CP forced to 1.5x mode */
  54 #define LP5521_CP_MODE_AUTO             0x18    /* Automatic mode selection */
  55 #define LP5521_R_TO_BATT                4       /* R out: 0 = CP, 1 = Vbat */
  56 #define LP5521_CLK_SRC_EXT              0       /* Ext-clk source (CLK_32K) */
  57 #define LP5521_CLK_INT                  1       /* Internal clock */
  58 #define LP5521_CLK_AUTO                 2       /* Automatic clock selection */
  59
  60 struct lp5521_platform_data {
  61         struct lp5521_led_config *led_config;
  62         u8      num_channels;
  63         u8      clock_mode;
  64         int     (*setup_resources)(void);
  65         void    (*release_resources)(void);
  66         void    (*enable)(bool state);
  67         const char *label;
  68         u8      update_config;
  69         struct lp5521_led_pattern *patterns;
  70         int num_patterns;
  71 };
  72
  73 #endif /* __LINUX_LP5521_H */