1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Register definitions and functions for:
4 * Philips UCB1400 driver
5 *
6 * Based on ucb1400_ts:
7 * Author: Nicolas Pitre
8 * Created: September 25, 2006
9 * Copyright: MontaVista Software, Inc.
10 *
11 * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
12 * If something doesn't work and it worked before spliting, e-mail me,
13 * dont bother Nicolas please ;-)
14 *
15 * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
16 * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
17 * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
18 */
19
20 #ifndef _LINUX__UCB1400_H
21 #define _LINUX__UCB1400_H
22
23 #include <sound/ac97_codec.h>
24 #include <linux/mutex.h>
25 #include <linux/platform_device.h>
26 #include <linux/gpio.h>
27
28 /*
29 * UCB1400 AC-link registers
30 */
31
32 #define UCB_IO_DATA 0x5a
33 #define UCB_IO_DIR 0x5c
34 #define UCB_IE_RIS 0x5e
35 #define UCB_IE_FAL 0x60
36 #define UCB_IE_STATUS 0x62
37 #define UCB_IE_CLEAR 0x62
38 #define UCB_IE_ADC (1 << 11)
39 #define UCB_IE_TSPX (1 << 12)
40
41 #define UCB_TS_CR 0x64
42 #define UCB_TS_CR_TSMX_POW (1 << 0)
43 #define UCB_TS_CR_TSPX_POW (1 << 1)
44 #define UCB_TS_CR_TSMY_POW (1 << 2)
45 #define UCB_TS_CR_TSPY_POW (1 << 3)
46 #define UCB_TS_CR_TSMX_GND (1 << 4)
47 #define UCB_TS_CR_TSPX_GND (1 << 5)
48 #define UCB_TS_CR_TSMY_GND (1 << 6)
49 #define UCB_TS_CR_TSPY_GND (1 << 7)
50 #define UCB_TS_CR_MODE_INT (0 << 8)
51 #define UCB_TS_CR_MODE_PRES (1 << 8)
52 #define UCB_TS_CR_MODE_POS (2 << 8)
53 #define UCB_TS_CR_BIAS_ENA (1 << 11)
54 #define UCB_TS_CR_TSPX_LOW (1 << 12)
55 #define UCB_TS_CR_TSMX_LOW (1 << 13)
56
57 #define UCB_ADC_CR 0x66
58 #define UCB_ADC_SYNC_ENA (1 << 0)
59 #define UCB_ADC_VREFBYP_CON (1 << 1)
60 #define UCB_ADC_INP_TSPX (0 << 2)
61 #define UCB_ADC_INP_TSMX (1 << 2)
62 #define UCB_ADC_INP_TSPY (2 << 2)
63 #define UCB_ADC_INP_TSMY (3 << 2)
64 #define UCB_ADC_INP_AD0 (4 << 2)
65 #define UCB_ADC_INP_AD1 (5 << 2)
66 #define UCB_ADC_INP_AD2 (6 << 2)
67 #define UCB_ADC_INP_AD3 (7 << 2)
68 #define UCB_ADC_EXT_REF (1 << 5)
69 #define UCB_ADC_START (1 << 7)
70 #define UCB_ADC_ENA (1 << 15)
71
72 #define UCB_ADC_DATA 0x68
73 #define UCB_ADC_DAT_VALID (1 << 15)
74
75 #define UCB_FCSR 0x6c
76 #define UCB_FCSR_AVE (1 << 12)
77
78 #define UCB_ADC_DAT_MASK 0x3ff
79
80 #define UCB_ID 0x7e
81 #define UCB_ID_1400 0x4304
82
83 struct ucb1400_gpio {
84 struct gpio_chip gc;
85 struct snd_ac97 *ac97;
86 int gpio_offset;
87 int (*gpio_setup)(struct device *dev, int ngpio);
88 int (*gpio_teardown)(struct device *dev, int ngpio);
89 };
90
91 struct ucb1400_ts {
92 struct input_dev *ts_idev;
93 int id;
94 int irq;
95 struct snd_ac97 *ac97;
96 wait_queue_head_t ts_wait;
97 bool stopped;
98 };
99
100 struct ucb1400 {
101 struct platform_device *ucb1400_ts;
102 struct platform_device *ucb1400_gpio;
103 };
104
105 struct ucb1400_pdata {
106 int irq;
107 int gpio_offset;
108 int (*gpio_setup)(struct device *dev, int ngpio);
109 int (*gpio_teardown)(struct device *dev, int ngpio);
110 };
111
ucb1400_reg_read(struct snd_ac97 * ac97,u16 reg)112 static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
113 {
114 return ac97->bus->ops->read(ac97, reg);
115 }
116
ucb1400_reg_write(struct snd_ac97 * ac97,u16 reg,u16 val)117 static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
118 {
119 ac97->bus->ops->write(ac97, reg, val);
120 }
121
ucb1400_gpio_get_value(struct snd_ac97 * ac97,u16 gpio)122 static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
123 {
124 return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
125 }
126
ucb1400_gpio_set_value(struct snd_ac97 * ac97,u16 gpio,u16 val)127 static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
128 u16 val)
129 {
130 ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
131 ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
132 ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
133 }
134
ucb1400_gpio_get_direction(struct snd_ac97 * ac97,u16 gpio)135 static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
136 {
137 return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
138 }
139
ucb1400_gpio_set_direction(struct snd_ac97 * ac97,u16 gpio,u16 dir)140 static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
141 u16 dir)
142 {
143 ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
144 ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
145 ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
146 }
147
ucb1400_adc_enable(struct snd_ac97 * ac97)148 static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
149 {
150 ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
151 }
152
ucb1400_adc_disable(struct snd_ac97 * ac97)153 static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
154 {
155 ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
156 }
157
158
159 unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
160 int adcsync);
161
162 #endif
163