drivers/staging/nvec/nvec.h

   1 #ifndef __LINUX_MFD_NVEC
   2 #define __LINUX_MFD_NVEC
   3
   4 #include <linux/semaphore.h>
   5
   6 typedef enum {
   7         NVEC_2BYTES,
   8         NVEC_3BYTES,
   9         NVEC_VAR_SIZE
  10 } nvec_size;
  11
  12 typedef enum {
  13         NOT_REALLY,
  14         YES,
  15         NOT_AT_ALL,
  16 } how_care;
  17
  18 typedef enum {
  19         NVEC_SYS=1,
  20         NVEC_BAT,
  21         NVEC_KBD = 5,
  22         NVEC_PS2,
  23         NVEC_CNTL,
  24         NVEC_KB_EVT = 0x80,
  25         NVEC_PS2_EVT
  26 } nvec_event;
  27
  28 typedef enum {
  29        NVEC_WAIT,
  30        NVEC_READ,
  31        NVEC_WRITE
  32 } nvec_state;
  33
  34 struct nvec_msg {
  35         unsigned char *data;
  36         unsigned short size;
  37         unsigned short pos;
  38         struct list_head node;
  39 };
  40
  41 struct nvec_subdev {
  42         const char *name;
  43         void *platform_data;
  44         int id;
  45 };
  46
  47 struct nvec_platform_data {
  48         int num_subdevs;
  49         int i2c_addr;
  50         int gpio;
  51         int irq;
  52         int base;
  53         int size;
  54         char clock[16];
  55         struct nvec_subdev *subdevs;
  56 };
  57
  58 struct nvec_chip {
  59         struct device *dev;
  60         int gpio;
  61         int irq;
  62         unsigned char *i2c_regs;
  63         nvec_state state;
  64         struct atomic_notifier_head notifier_list;
  65         struct list_head rx_data, tx_data;
  66         struct notifier_block nvec_status_notifier;
  67         struct work_struct rx_work, tx_work;
  68         struct nvec_msg *rx, *tx;
  69
  70 /* sync write stuff */
  71         struct semaphore sync_write_mutex;
  72         struct completion sync_write;
  73         u16 sync_write_pending;
  74         struct nvec_msg *last_sync_msg;
  75 };
  76
  77 extern void nvec_write_async(struct nvec_chip *nvec, unsigned char *data, short size);
  78
  79 extern int nvec_register_notifier(struct nvec_chip *nvec,
  80                  struct notifier_block *nb, unsigned int events);
  81
  82 extern int nvec_unregister_notifier(struct device *dev,
  83                 struct notifier_block *nb, unsigned int events);
  84
  85 const char *nvec_send_msg(unsigned char *src, unsigned char *dst_size, how_care care_resp, void (*rt_handler)(unsigned char *data));
  86
  87 extern int nvec_ps2(struct nvec_chip *nvec);
  88 extern int nvec_kbd_init(struct nvec_chip *nvec);
  89
  90 #define I2C_CNFG                        0x00
  91 #define I2C_CNFG_PACKET_MODE_EN         (1<<10)
  92 #define I2C_CNFG_NEW_MASTER_SFM         (1<<11)
  93 #define I2C_CNFG_DEBOUNCE_CNT_SHIFT     12
  94
  95 #define I2C_SL_CNFG             0x20
  96 #define I2C_SL_NEWL             (1<<2)
  97 #define I2C_SL_NACK             (1<<1)
  98 #define I2C_SL_RESP             (1<<0)
  99 #define I2C_SL_IRQ              (1<<3)
 100 #define END_TRANS               (1<<4)
 101 #define RCVD                    (1<<2)
 102 #define RNW                     (1<<1)
 103
 104 #define I2C_SL_RCVD             0x24
 105 #define I2C_SL_STATUS           0x28
 106 #define I2C_SL_ADDR1            0x2c
 107 #define I2C_SL_ADDR2            0x30
 108 #define I2C_SL_DELAY_COUNT      0x3c
 109
 110 #endif