drivers/staging/olpc_dcon/olpc_dcon.h

   1 #ifndef OLPC_DCON_H_
   2 #define OLPC_DCON_H_
   3
   4 #include <linux/notifier.h>
   5 #include <linux/workqueue.h>
   6
   7 /* DCON registers */
   8
   9 #define DCON_REG_ID              0
  10 #define DCON_REG_MODE            1
  11
  12 #define MODE_PASSTHRU   (1<<0)
  13 #define MODE_SLEEP      (1<<1)
  14 #define MODE_SLEEP_AUTO (1<<2)
  15 #define MODE_BL_ENABLE  (1<<3)
  16 #define MODE_BLANK      (1<<4)
  17 #define MODE_CSWIZZLE   (1<<5)
  18 #define MODE_COL_AA     (1<<6)
  19 #define MODE_MONO_LUMA  (1<<7)
  20 #define MODE_SCAN_INT   (1<<8)
  21 #define MODE_CLOCKDIV   (1<<9)
  22 #define MODE_DEBUG      (1<<14)
  23 #define MODE_SELFTEST   (1<<15)
  24
  25 #define DCON_REG_HRES           0x2
  26 #define DCON_REG_HTOTAL         0x3
  27 #define DCON_REG_HSYNC_WIDTH    0x4
  28 #define DCON_REG_VRES           0x5
  29 #define DCON_REG_VTOTAL         0x6
  30 #define DCON_REG_VSYNC_WIDTH    0x7
  31 #define DCON_REG_TIMEOUT        0x8
  32 #define DCON_REG_SCAN_INT       0x9
  33 #define DCON_REG_BRIGHT         0xa
  34 #define DCON_REG_MEM_OPT_A      0x41
  35 #define DCON_REG_MEM_OPT_B      0x42
  36
  37 /* Load Delay Locked Loop (DLL) settings for clock delay */
  38 #define MEM_DLL_CLOCK_DELAY     (1<<0)
  39 /* Memory controller power down function */
  40 #define MEM_POWER_DOWN          (1<<8)
  41 /* Memory controller software reset */
  42 #define MEM_SOFT_RESET          (1<<0)
  43
  44 /* Status values */
  45
  46 #define DCONSTAT_SCANINT        0
  47 #define DCONSTAT_SCANINT_DCON   1
  48 #define DCONSTAT_DISPLAYLOAD    2
  49 #define DCONSTAT_MISSED         3
  50
  51 /* Source values */
  52
  53 #define DCON_SOURCE_DCON        0
  54 #define DCON_SOURCE_CPU         1
  55
  56 /* Interrupt */
  57 #define DCON_IRQ                6
  58
  59 struct dcon_priv {
  60         struct i2c_client *client;
  61         struct fb_info *fbinfo;
  62         struct backlight_device *bl_dev;
  63
  64         wait_queue_head_t waitq;
  65         struct work_struct switch_source;
  66         struct notifier_block reboot_nb;
  67
  68         /* Shadow register for the DCON_REG_MODE register */
  69         u8 disp_mode;
  70
  71         /* The current backlight value - this saves us some smbus traffic */
  72         u8 bl_val;
  73
  74         /* Current source, initialized at probe time */
  75         int curr_src;
  76
  77         /* Desired source */
  78         int pending_src;
  79
  80         /* Variables used during switches */
  81         bool switched;
  82         struct timespec irq_time;
  83         struct timespec load_time;
  84
  85         /* Current output type; true == mono, false == color */
  86         bool mono;
  87         bool asleep;
  88         /* This get set while controlling fb blank state from the driver */
  89         bool ignore_fb_events;
  90 };
  91
  92 struct dcon_platform_data {
  93         int (*init)(struct dcon_priv *);
  94         void (*bus_stabilize_wiggle)(void);
  95         void (*set_dconload)(int);
  96         int (*read_status)(u8 *);
  97 };
  98
  99 #include <linux/interrupt.h>
 100
 101 extern irqreturn_t dcon_interrupt(int irq, void *id);
 102
 103 #ifdef CONFIG_FB_OLPC_DCON_1
 104 extern struct dcon_platform_data dcon_pdata_xo_1;
 105 #endif
 106
 107 #ifdef CONFIG_FB_OLPC_DCON_1_5
 108 extern struct dcon_platform_data dcon_pdata_xo_1_5;
 109 #endif
 110
 111 #endif