LXR linux/include/linux/ucb1400.h

   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
  83struct 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
  91struct 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
 100struct ucb1400 {
 101        struct platform_device  *ucb1400_ts;
 102        struct platform_device  *ucb1400_gpio;
 103};
 104
 105struct 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
 112static inline u16 ucb1400_reg_read(struct snd_ac97 *ac97, u16 reg)
 113{
 114        return ac97->bus->ops->read(ac97, reg);
 115}
 116
 117static inline void ucb1400_reg_write(struct snd_ac97 *ac97, u16 reg, u16 val)
 118{
 119        ac97->bus->ops->write(ac97, reg, val);
 120}
 121
 122static 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
 127static 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
 135static 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
 140static 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
 148static inline void ucb1400_adc_enable(struct snd_ac97 *ac97)
 149{
 150        ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA);
 151}
 152
 153static inline void ucb1400_adc_disable(struct snd_ac97 *ac97)
 154{
 155        ucb1400_reg_write(ac97, UCB_ADC_CR, 0);
 156}
 157
 158
 159unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
 160                              int adcsync);
 161
 162#endif
 163