include/linux/mfd/ucb1x00.h

   1 /*
   2  *  linux/include/mfd/ucb1x00.h
   3  *
   4  *  Copyright (C) 2001 Russell King, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License.
   9  */
  10 #ifndef UCB1200_H
  11 #define UCB1200_H
  12
  13 #include <linux/mfd/mcp.h>
  14 #include <linux/gpio.h>
  15 #include <linux/semaphore.h>
  16
  17 #define UCB_IO_DATA     0x00
  18 #define UCB_IO_DIR      0x01
  19
  20 #define UCB_IO_0                (1 << 0)
  21 #define UCB_IO_1                (1 << 1)
  22 #define UCB_IO_2                (1 << 2)
  23 #define UCB_IO_3                (1 << 3)
  24 #define UCB_IO_4                (1 << 4)
  25 #define UCB_IO_5                (1 << 5)
  26 #define UCB_IO_6                (1 << 6)
  27 #define UCB_IO_7                (1 << 7)
  28 #define UCB_IO_8                (1 << 8)
  29 #define UCB_IO_9                (1 << 9)
  30
  31 #define UCB_IE_RIS      0x02
  32 #define UCB_IE_FAL      0x03
  33 #define UCB_IE_STATUS   0x04
  34 #define UCB_IE_CLEAR    0x04
  35 #define UCB_IE_ADC              (1 << 11)
  36 #define UCB_IE_TSPX             (1 << 12)
  37 #define UCB_IE_TSMX             (1 << 13)
  38 #define UCB_IE_TCLIP            (1 << 14)
  39 #define UCB_IE_ACLIP            (1 << 15)
  40
  41 #define UCB_IRQ_TSPX            12
  42
  43 #define UCB_TC_A        0x05
  44 #define UCB_TC_A_LOOP           (1 << 7)        /* UCB1200 */
  45 #define UCB_TC_A_AMPL           (1 << 7)        /* UCB1300 */
  46
  47 #define UCB_TC_B        0x06
  48 #define UCB_TC_B_VOICE_ENA      (1 << 3)
  49 #define UCB_TC_B_CLIP           (1 << 4)
  50 #define UCB_TC_B_ATT            (1 << 6)
  51 #define UCB_TC_B_SIDE_ENA       (1 << 11)
  52 #define UCB_TC_B_MUTE           (1 << 13)
  53 #define UCB_TC_B_IN_ENA         (1 << 14)
  54 #define UCB_TC_B_OUT_ENA        (1 << 15)
  55
  56 #define UCB_AC_A        0x07
  57 #define UCB_AC_B        0x08
  58 #define UCB_AC_B_LOOP           (1 << 8)
  59 #define UCB_AC_B_MUTE           (1 << 13)
  60 #define UCB_AC_B_IN_ENA         (1 << 14)
  61 #define UCB_AC_B_OUT_ENA        (1 << 15)
  62
  63 #define UCB_TS_CR       0x09
  64 #define UCB_TS_CR_TSMX_POW      (1 << 0)
  65 #define UCB_TS_CR_TSPX_POW      (1 << 1)
  66 #define UCB_TS_CR_TSMY_POW      (1 << 2)
  67 #define UCB_TS_CR_TSPY_POW      (1 << 3)
  68 #define UCB_TS_CR_TSMX_GND      (1 << 4)
  69 #define UCB_TS_CR_TSPX_GND      (1 << 5)
  70 #define UCB_TS_CR_TSMY_GND      (1 << 6)
  71 #define UCB_TS_CR_TSPY_GND      (1 << 7)
  72 #define UCB_TS_CR_MODE_INT      (0 << 8)
  73 #define UCB_TS_CR_MODE_PRES     (1 << 8)
  74 #define UCB_TS_CR_MODE_POS      (2 << 8)
  75 #define UCB_TS_CR_BIAS_ENA      (1 << 11)
  76 #define UCB_TS_CR_TSPX_LOW      (1 << 12)
  77 #define UCB_TS_CR_TSMX_LOW      (1 << 13)
  78
  79 #define UCB_ADC_CR      0x0a
  80 #define UCB_ADC_SYNC_ENA        (1 << 0)
  81 #define UCB_ADC_VREFBYP_CON     (1 << 1)
  82 #define UCB_ADC_INP_TSPX        (0 << 2)
  83 #define UCB_ADC_INP_TSMX        (1 << 2)
  84 #define UCB_ADC_INP_TSPY        (2 << 2)
  85 #define UCB_ADC_INP_TSMY        (3 << 2)
  86 #define UCB_ADC_INP_AD0         (4 << 2)
  87 #define UCB_ADC_INP_AD1         (5 << 2)
  88 #define UCB_ADC_INP_AD2         (6 << 2)
  89 #define UCB_ADC_INP_AD3         (7 << 2)
  90 #define UCB_ADC_EXT_REF         (1 << 5)
  91 #define UCB_ADC_START           (1 << 7)
  92 #define UCB_ADC_ENA             (1 << 15)
  93
  94 #define UCB_ADC_DATA    0x0b
  95 #define UCB_ADC_DAT_VAL         (1 << 15)
  96 #define UCB_ADC_DAT(x)          (((x) & 0x7fe0) >> 5)
  97
  98 #define UCB_ID          0x0c
  99 #define UCB_ID_1200             0x1004
 100 #define UCB_ID_1300             0x1005
 101 #define UCB_ID_TC35143          0x9712
 102
 103 #define UCB_MODE        0x0d
 104 #define UCB_MODE_DYN_VFLAG_ENA  (1 << 12)
 105 #define UCB_MODE_AUD_OFF_CAN    (1 << 13)
 106
 107
 108 struct ucb1x00_irq {
 109         void *devid;
 110         void (*fn)(int, void *);
 111 };
 112
 113 struct ucb1x00 {
 114         spinlock_t              lock;
 115         struct mcp              *mcp;
 116         unsigned int            irq;
 117         struct semaphore        adc_sem;
 118         spinlock_t              io_lock;
 119         u16                     id;
 120         u16                     io_dir;
 121         u16                     io_out;
 122         u16                     adc_cr;
 123         u16                     irq_fal_enbl;
 124         u16                     irq_ris_enbl;
 125         struct ucb1x00_irq      irq_handler[16];
 126         struct device           dev;
 127         struct list_head        node;
 128         struct list_head        devs;
 129         struct gpio_chip        gpio;
 130 };
 131
 132 struct ucb1x00_driver;
 133
 134 struct ucb1x00_dev {
 135         struct list_head        dev_node;
 136         struct list_head        drv_node;
 137         struct ucb1x00          *ucb;
 138         struct ucb1x00_driver   *drv;
 139         void                    *priv;
 140 };
 141
 142 struct ucb1x00_driver {
 143         struct list_head        node;
 144         struct list_head        devs;
 145         int     (*add)(struct ucb1x00_dev *dev);
 146         void    (*remove)(struct ucb1x00_dev *dev);
 147         int     (*suspend)(struct ucb1x00_dev *dev, pm_message_t state);
 148         int     (*resume)(struct ucb1x00_dev *dev);
 149 };
 150
 151 #define classdev_to_ucb1x00(cd) container_of(cd, struct ucb1x00, dev)
 152
 153 int ucb1x00_register_driver(struct ucb1x00_driver *);
 154 void ucb1x00_unregister_driver(struct ucb1x00_driver *);
 155
 156 /**
 157  *      ucb1x00_clkrate - return the UCB1x00 SIB clock rate
 158  *      @ucb: UCB1x00 structure describing chip
 159  *
 160  *      Return the SIB clock rate in Hz.
 161  */
 162 static inline unsigned int ucb1x00_clkrate(struct ucb1x00 *ucb)
 163 {
 164         return mcp_get_sclk_rate(ucb->mcp);
 165 }
 166
 167 /**
 168  *      ucb1x00_enable - enable the UCB1x00 SIB clock
 169  *      @ucb: UCB1x00 structure describing chip
 170  *
 171  *      Enable the SIB clock.  This can be called multiple times.
 172  */
 173 static inline void ucb1x00_enable(struct ucb1x00 *ucb)
 174 {
 175         mcp_enable(ucb->mcp);
 176 }
 177
 178 /**
 179  *      ucb1x00_disable - disable the UCB1x00 SIB clock
 180  *      @ucb: UCB1x00 structure describing chip
 181  *
 182  *      Disable the SIB clock.  The SIB clock will only be disabled
 183  *      when the number of ucb1x00_enable calls match the number of
 184  *      ucb1x00_disable calls.
 185  */
 186 static inline void ucb1x00_disable(struct ucb1x00 *ucb)
 187 {
 188         mcp_disable(ucb->mcp);
 189 }
 190
 191 /**
 192  *      ucb1x00_reg_write - write a UCB1x00 register
 193  *      @ucb: UCB1x00 structure describing chip
 194  *      @reg: UCB1x00 4-bit register index to write
 195  *      @val: UCB1x00 16-bit value to write
 196  *
 197  *      Write the UCB1x00 register @reg with value @val.  The SIB
 198  *      clock must be running for this function to return.
 199  */
 200 static inline void ucb1x00_reg_write(struct ucb1x00 *ucb, unsigned int reg, unsigned int val)
 201 {
 202         mcp_reg_write(ucb->mcp, reg, val);
 203 }
 204
 205 /**
 206  *      ucb1x00_reg_read - read a UCB1x00 register
 207  *      @ucb: UCB1x00 structure describing chip
 208  *      @reg: UCB1x00 4-bit register index to write
 209  *
 210  *      Read the UCB1x00 register @reg and return its value.  The SIB
 211  *      clock must be running for this function to return.
 212  */
 213 static inline unsigned int ucb1x00_reg_read(struct ucb1x00 *ucb, unsigned int reg)
 214 {
 215         return mcp_reg_read(ucb->mcp, reg);
 216 }
 217 /**
 218  *      ucb1x00_set_audio_divisor -
 219  *      @ucb: UCB1x00 structure describing chip
 220  *      @div: SIB clock divisor
 221  */
 222 static inline void ucb1x00_set_audio_divisor(struct ucb1x00 *ucb, unsigned int div)
 223 {
 224         mcp_set_audio_divisor(ucb->mcp, div);
 225 }
 226
 227 /**
 228  *      ucb1x00_set_telecom_divisor -
 229  *      @ucb: UCB1x00 structure describing chip
 230  *      @div: SIB clock divisor
 231  */
 232 static inline void ucb1x00_set_telecom_divisor(struct ucb1x00 *ucb, unsigned int div)
 233 {
 234         mcp_set_telecom_divisor(ucb->mcp, div);
 235 }
 236
 237 void ucb1x00_io_set_dir(struct ucb1x00 *ucb, unsigned int, unsigned int);
 238 void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int, unsigned int);
 239 unsigned int ucb1x00_io_read(struct ucb1x00 *ucb);
 240
 241 #define UCB_NOSYNC      (0)
 242 #define UCB_SYNC        (1)
 243
 244 unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync);
 245 void ucb1x00_adc_enable(struct ucb1x00 *ucb);
 246 void ucb1x00_adc_disable(struct ucb1x00 *ucb);
 247
 248 /*
 249  * Which edges of the IRQ do you want to control today?
 250  */
 251 #define UCB_RISING      (1 << 0)
 252 #define UCB_FALLING     (1 << 1)
 253
 254 int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid);
 255 void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
 256 void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
 257 int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid);
 258
 259 #endif