drivers/staging/nvec/nvec.h

   1 #ifndef __LINUX_MFD_NVEC
   2 #define __LINUX_MFD_NVEC
   3
   4 #include <linux/notifier.h>
   5 #include <linux/semaphore.h>
   6
   7 typedef enum {
   8         NVEC_2BYTES,
   9         NVEC_3BYTES,
  10         NVEC_VAR_SIZE
  11 } nvec_size;
  12
  13 typedef enum {
  14         NOT_REALLY,
  15         YES,
  16         NOT_AT_ALL,
  17 } how_care;
  18
  19 typedef enum {
  20         NVEC_SYS=1,
  21         NVEC_BAT,
  22         NVEC_KBD = 5,
  23         NVEC_PS2,
  24         NVEC_CNTL,
  25         NVEC_KB_EVT = 0x80,
  26         NVEC_PS2_EVT
  27 } nvec_event;
  28
  29 typedef enum {
  30        NVEC_WAIT,
  31        NVEC_READ,
  32        NVEC_WRITE
  33 } nvec_state;
  34
  35 struct nvec_msg {
  36         unsigned char *data;
  37         unsigned short size;
  38         unsigned short pos;
  39         struct list_head node;
  40 };
  41
  42 struct nvec_subdev {
  43         const char *name;
  44         void *platform_data;
  45         int id;
  46 };
  47
  48 struct nvec_platform_data {
  49         int i2c_addr;
  50         int gpio;
  51 };
  52
  53 struct nvec_chip {
  54         struct device *dev;
  55         int gpio;
  56         int irq;
  57         int i2c_addr;
  58         void __iomem *base;
  59         struct clk *i2c_clk;
  60         nvec_state state;
  61         struct atomic_notifier_head notifier_list;
  62         struct list_head rx_data, tx_data;
  63         struct notifier_block nvec_status_notifier;
  64         struct work_struct rx_work, tx_work;
  65         struct nvec_msg *rx, *tx;
  66
  67 /* sync write stuff */
  68         struct semaphore sync_write_mutex;
  69         struct completion sync_write;
  70         u16 sync_write_pending;
  71         struct nvec_msg *last_sync_msg;
  72 };
  73
  74 extern void nvec_write_async(struct nvec_chip *nvec, unsigned char *data, short size);
  75
  76 extern int nvec_register_notifier(struct nvec_chip *nvec,
  77                  struct notifier_block *nb, unsigned int events);
  78
  79 extern int nvec_unregister_notifier(struct device *dev,
  80                 struct notifier_block *nb, unsigned int events);
  81
  82 const char *nvec_send_msg(unsigned char *src, unsigned char *dst_size, how_care care_resp, void (*rt_handler)(unsigned char *data));
  83
  84 #define I2C_CNFG                        0x00
  85 #define I2C_CNFG_PACKET_MODE_EN         (1<<10)
  86 #define I2C_CNFG_NEW_MASTER_SFM         (1<<11)
  87 #define I2C_CNFG_DEBOUNCE_CNT_SHIFT     12
  88
  89 #define I2C_SL_CNFG             0x20
  90 #define I2C_SL_NEWL             (1<<2)
  91 #define I2C_SL_NACK             (1<<1)
  92 #define I2C_SL_RESP             (1<<0)
  93 #define I2C_SL_IRQ              (1<<3)
  94 #define END_TRANS               (1<<4)
  95 #define RCVD                    (1<<2)
  96 #define RNW                     (1<<1)
  97
  98 #define I2C_SL_RCVD             0x24
  99 #define I2C_SL_STATUS           0x28
 100 #define I2C_SL_ADDR1            0x2c
 101 #define I2C_SL_ADDR2            0x30
 102 #define I2C_SL_DELAY_COUNT      0x3c
 103
 104 #endif