tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
28struct 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
35struct 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
60struct 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 */