1 /*
2 * include/linux/platform_data/pwm_omap_dmtimer.h
3 *
4 * OMAP Dual-Mode Timer PWM platform data
5 *
6 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
7 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
8 * Thara Gopinath <thara@ti.com>
9 *
10 * Platform device conversion and hwmod support.
11 *
12 * Copyright (C) 2005 Nokia Corporation
13 * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>
14 * PWM and clock framework support by Timo Teras.
15 *
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the
18 * Free Software Foundation; either version 2 of the License, or (at your
19 * option) any later version.
20 *
21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
24 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * You should have received a copy of the GNU General Public License along
31 * with this program; if not, write to the Free Software Foundation, Inc.,
32 * 675 Mass Ave, Cambridge, MA 02139, USA.
33 */
34
35 #ifndef __PWM_OMAP_DMTIMER_PDATA_H
36 #define __PWM_OMAP_DMTIMER_PDATA_H
37
38 /* clock sources */
39 #define PWM_OMAP_DMTIMER_SRC_SYS_CLK 0x00
40 #define PWM_OMAP_DMTIMER_SRC_32_KHZ 0x01
41 #define PWM_OMAP_DMTIMER_SRC_EXT_CLK 0x02
42
43 /* timer interrupt enable bits */
44 #define PWM_OMAP_DMTIMER_INT_CAPTURE (1 << 2)
45 #define PWM_OMAP_DMTIMER_INT_OVERFLOW (1 << 1)
46 #define PWM_OMAP_DMTIMER_INT_MATCH (1 << 0)
47
48 /* trigger types */
49 #define PWM_OMAP_DMTIMER_TRIGGER_NONE 0x00
50 #define PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW 0x01
51 #define PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW_AND_COMPARE 0x02
52
53 struct omap_dm_timer;
54 typedef struct omap_dm_timer pwm_omap_dmtimer;
55
56 struct pwm_omap_dmtimer_pdata {
57 pwm_omap_dmtimer *(*request_by_node)(struct device_node *np);
58 pwm_omap_dmtimer *(*request_specific)(int timer_id);
59 pwm_omap_dmtimer *(*request)(void);
60
61 int (*free)(pwm_omap_dmtimer *timer);
62
63 void (*enable)(pwm_omap_dmtimer *timer);
64 void (*disable)(pwm_omap_dmtimer *timer);
65
66 int (*get_irq)(pwm_omap_dmtimer *timer);
67 int (*set_int_enable)(pwm_omap_dmtimer *timer, unsigned int value);
68 int (*set_int_disable)(pwm_omap_dmtimer *timer, u32 mask);
69
70 struct clk *(*get_fclk)(pwm_omap_dmtimer *timer);
71
72 int (*start)(pwm_omap_dmtimer *timer);
73 int (*stop)(pwm_omap_dmtimer *timer);
74 int (*set_source)(pwm_omap_dmtimer *timer, int source);
75
76 int (*set_load)(pwm_omap_dmtimer *timer, int autoreload,
77 unsigned int value);
78 int (*set_match)(pwm_omap_dmtimer *timer, int enable,
79 unsigned int match);
80 int (*set_pwm)(pwm_omap_dmtimer *timer, int def_on,
81 int toggle, int trigger);
82 int (*set_prescaler)(pwm_omap_dmtimer *timer, int prescaler);
83
84 unsigned int (*read_counter)(pwm_omap_dmtimer *timer);
85 int (*write_counter)(pwm_omap_dmtimer *timer, unsigned int value);
86 unsigned int (*read_status)(pwm_omap_dmtimer *timer);
87 int (*write_status)(pwm_omap_dmtimer *timer, unsigned int value);
88 };
89
90 #endif /* __PWM_OMAP_DMTIMER_PDATA_H */