LXR linux/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 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_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
  92struct ucb1400_gpio {
  93        struct gpio_chip        gc;
  94        struct snd_ac97         *ac97;
  95};
  96
  97struct 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
 108struct ucb1400 {
 109        struct platform_device  *ucb1400_ts;
 110        struct platform_device  *ucb1400_gpio;
 111};
 112
 113struct ucb1400_pdata {
 114        int     irq;
 115};
 116
 117static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
 118{
 119        return ac97->bus->ops->read(ac97, reg);
 120}
 121
 122static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
 123{
 124        ac97->bus->ops->write(ac97, reg, val);
 125}
 126
 127static inline u16 ucb1400_gpio_get_value(struct snd_ac97 *ac97, u16 gpio)
 128{
 129        return ucb1400_reg_read(ac97, UCB_IO_DATA) & (1 << gpio);
 130}
 131
 132static inline void ucb1400_gpio_set_value(struct snd_ac97 *ac97, u16 gpio,
 133                                                u16 val)
 134{
 135        ucb1400_reg_write(ac97, UCB_IO_DATA, val ?
 136                        ucb1400_reg_read(ac97, UCB_IO_DATA) | (1 << gpio) :
 137                        ucb1400_reg_read(ac97, UCB_IO_DATA) & ~(1 << gpio));
 138}
 139
 140static inline u16 ucb1400_gpio_get_direction(struct snd_ac97 *ac97, u16 gpio)
 141{
 142        return ucb1400_reg_read(ac97, UCB_IO_DIR) & (1 << gpio);
 143}
 144
 145static inline void ucb1400_gpio_set_direction(struct snd_ac97 *ac97, u16 gpio,
 146                                                u16 dir)
 147{
 148        ucb1400_reg_write(ac97, UCB_IO_DIR, dir ?
 149                        ucb1400_reg_read(ac97, UCB_IO_DIR) | (1 << gpio) :
 150                        ucb1400_reg_read(ac97, UCB_IO_DIR) & ~(1 << gpio));
 151}
 152
 153static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
 154{
 155        ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
 156}
 157
 158static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
 159{
 160        ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
 161}
 162
 163
 164unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
 165                              int adcsync);
 166
 167#ifdef CONFIG_GPIO_UCB1400
 168void __init ucb1400_gpio_set_data(struct ucb1400_gpio_data *data);
 169#else
 170static inline void ucb1400_gpio_set_data(struct ucb1400_gpio_data *data) {}
 171#endif
 172
 173#endif
 174