1/*
2 * Register definitions and functions for:
3 *  Philips UCB1400 driver
4 *
5 * Based on ucb1400_ts:
6 *  Author:	Nicolas Pitre
7 *  Created:	September 25, 2006
8 *  Copyright:	MontaVista Software, Inc.
9 *
10 * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
11 * If something doesn't work and it worked before spliting, e-mail me,
12 * dont bother Nicolas please ;-)
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 *
18 * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
19 * covering the UCB1100, UCB1200 and UCB1300..  Support for the UCB1400 has
20 * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
21 */
22
23#ifndef _LINUX__UCB1400_H
24#define _LINUX__UCB1400_H
25
26#include <sound/ac97_codec.h>
27#include <linux/mutex.h>
28#include <linux/platform_device.h>
29#include <linux/gpio.h>
30
31/*
32 * UCB1400 AC-link registers
33 */
34
35#define UCB_IO_DATA		0x5a
36#define UCB_IO_DIR		0x5c
37#define UCB_IE_RIS		0x5e
38#define UCB_IE_FAL		0x60
39#define UCB_IE_STATUS		0x62
40#define UCB_IE_CLEAR		0x62
41#define UCB_IE_ADC		(1 << 11)
42#define UCB_IE_TSPX		(1 << 12)
43
44#define UCB_TS_CR		0x64
45#define UCB_TS_CR_TSMX_POW	(1 << 0)
46#define UCB_TS_CR_TSPX_POW	(1 << 1)
47#define UCB_TS_CR_TSMY_POW	(1 << 2)
48#define UCB_TS_CR_TSPY_POW	(1 << 3)
49#define UCB_TS_CR_TSMX_GND	(1 << 4)
50#define UCB_TS_CR_TSPX_GND	(1 << 5)
51#define UCB_TS_CR_TSMY_GND	(1 << 6)
52#define UCB_TS_CR_TSPY_GND	(1 << 7)
53#define UCB_TS_CR_MODE_INT	(0 << 8)
54#define UCB_TS_CR_MODE_PRES	(1 << 8)
55#define UCB_TS_CR_MODE_POS	(2 << 8)
56#define UCB_TS_CR_BIAS_ENA	(1 << 11)
57#define UCB_TS_CR_TSPX_LOW	(1 << 12)
58#define UCB_TS_CR_TSMX_LOW	(1 << 13)
59
60#define UCB_ADC_CR		0x66
61#define UCB_ADC_SYNC_ENA	(1 << 0)
62#define UCB_ADC_VREFBYP_CON	(1 << 1)
63#define UCB_ADC_INP_TSPX	(0 << 2)
64#define UCB_ADC_INP_TSMX	(1 << 2)
65#define UCB_ADC_INP_TSPY	(2 << 2)
66#define UCB_ADC_INP_TSMY	(3 << 2)
67#define UCB_ADC_INP_AD0		(4 << 2)
68#define UCB_ADC_INP_AD1		(5 << 2)
69#define UCB_ADC_INP_AD2		(6 << 2)
70#define UCB_ADC_INP_AD3		(7 << 2)
71#define UCB_ADC_EXT_REF		(1 << 5)
72#define UCB_ADC_START		(1 << 7)
73#define UCB_ADC_ENA		(1 << 15)
74
75#define UCB_ADC_DATA		0x68
76#define UCB_ADC_DAT_VALID	(1 << 15)
77
78#define UCB_FCSR		0x6c
79#define UCB_FCSR_AVE		(1 << 12)
80
81#define UCB_ADC_DAT_MASK	0x3ff
82
83#define UCB_ID			0x7e
84#define UCB_ID_1400             0x4304
85
86struct ucb1400_gpio {
87	struct gpio_chip	gc;
88	struct snd_ac97		*ac97;
89	int			gpio_offset;
90	int			(*gpio_setup)(struct device *dev, int ngpio);
91	int			(*gpio_teardown)(struct device *dev, int ngpio);
92};
93
94struct ucb1400_ts {
95	struct input_dev	*ts_idev;
96	int			id;
97	int			irq;
98	struct snd_ac97		*ac97;
99	wait_queue_head_t	ts_wait;
100	bool			stopped;
101};
102
103struct ucb1400 {
104	struct platform_device	*ucb1400_ts;
105	struct platform_device	*ucb1400_gpio;
106};
107
108struct ucb1400_pdata {
109	int	irq;
110	int	gpio_offset;
111	int	(*gpio_setup)(struct device *dev, int ngpio);
112	int	(*gpio_teardown)(struct device *dev, int ngpio);
113};
114
115static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
116{
117	return ac97->bus->ops->read(ac97, reg);
118}
119
120static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
121{
122	ac97->bus->ops->write(ac97, reg, val);
123}
124
125static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
126{
127	return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
128}
129
130static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
131						u16 val)
132{
133	ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
134			ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
135			ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
136}
137
138static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
139{
140	return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
141}
142
143static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
144						u16 dir)
145{
146	ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
147			ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
148			ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
149}
150
151static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
152{
153	ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
154}
155
156static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
157{
158	ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
159}
160
161
162unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
163			      int adcsync);
164
165#endif
166