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
  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        int                     id;
 100        int                     irq;
 101        struct snd_ac97         *ac97;
 102        wait_queue_head_t       ts_wait;
 103        bool                    stopped;
 104};
 105
 106struct ucb1400 {
 107        struct platform_device  *ucb1400_ts;
 108        struct platform_device  *ucb1400_gpio;
 109};
 110
 111struct ucb1400_pdata {
 112        int     irq;
 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#ifdef CONFIG_GPIO_UCB1400
 166void __init ucb1400_gpio_set_data(struct ucb1400_gpio_data *data);
 167#else
 168static inline void ucb1400_gpio_set_data(struct ucb1400_gpio_data *data) {}
 169#endif
 170
 171#endif
 172
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