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TOMOYO Linux Cross Reference
Linux/include/linux/ucb1400.h

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  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 
 86 struct 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 
 94 struct 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 
103 struct ucb1400 {
104         struct platform_device  *ucb1400_ts;
105         struct platform_device  *ucb1400_gpio;
106 };
107 
108 struct 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 
115 static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
116 {
117         return ac97->bus->ops->read(ac97, reg);
118 }
119 
120 static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
121 {
122         ac97->bus->ops->write(ac97, reg, val);
123 }
124 
125 static 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 
130 static 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 
138 static 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 
143 static 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 
151 static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
152 {
153         ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
154 }
155 
156 static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
157 {
158         ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
159 }
160 
161 
162 unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
163                               int adcsync);
164 
165 #endif
166 

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