include/linux/ucb1400.h

   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 doesnt 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_data {
  87         int gpio_offset;
  88         int (*gpio_setup)(struct device *dev, int ngpio);
  89         int (*gpio_teardown)(struct device *dev, int ngpio);
  90 };
  91
  92 struct ucb1400_gpio {
  93         struct gpio_chip        gc;
  94         struct snd_ac97         *ac97;
  95 };
  96
  97 struct ucb1400_ts {
  98         struct input_dev        *ts_idev;
  99         struct task_struct      *ts_task;
 100         int                     id;
 101         wait_queue_head_t       ts_wait;
 102         unsigned int            ts_restart:1;
 103         int                     irq;
 104         unsigned int            irq_pending;    /* not bit field shared */
 105         struct snd_ac97         *ac97;
 106 };
 107
 108 struct ucb1400 {
 109         struct platform_device  *ucb1400_ts;
 110         struct platform_device  *ucb1400_gpio;
 111 };
 112
 113 static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
 114 {
 115         return ac97->bus->ops->read(ac97, reg);
 116 }
 117
 118 static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
 119 {
 120         ac97->bus->ops->write(ac97, reg, val);
 121 }
 122
 123 static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
 124 {
 125         return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
 126 }
 127
 128 static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
 129                                                 u16 val)
 130 {
 131         ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
 132                         ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
 133                         ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
 134 }
 135
 136 static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
 137 {
 138         return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
 139 }
 140
 141 static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
 142                                                 u16 dir)
 143 {
 144         ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
 145                         ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
 146                         ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
 147 }
 148
 149 static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
 150 {
 151         ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
 152 }
 153
 154 static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
 155 {
 156         ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
 157 }
 158
 159
 160 unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
 161                               int adcsync);
 162
 163 #ifdef CONFIG_GPIO_UCB1400
 164 void __init ucb1400_gpio_set_data(struct ucb1400_gpio_data *data);
 165 #else
 166 static inline void ucb1400_gpio_set_data(struct ucb1400_gpio_data *data) {}
 167 #endif
 168
 169 #endif