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           2
  26 #define DCON_REG_HTOTAL         3
  27 #define DCON_REG_HSYNC_WIDTH    4
  28 #define DCON_REG_VRES           5
  29 #define DCON_REG_VTOTAL         6
  30 #define DCON_REG_VSYNC_WIDTH    7
  31 #define DCON_REG_TIMEOUT        8
  32 #define DCON_REG_SCAN_INT       9
  33 #define DCON_REG_BRIGHT         10
  34
  35 /* Status values */
  36
  37 #define DCONSTAT_SCANINT        0
  38 #define DCONSTAT_SCANINT_DCON   1
  39 #define DCONSTAT_DISPLAYLOAD    2
  40 #define DCONSTAT_MISSED         3
  41
  42 /* Source values */
  43
  44 #define DCON_SOURCE_DCON        0
  45 #define DCON_SOURCE_CPU         1
  46
  47 /* Interrupt */
  48 #define DCON_IRQ                6
  49
  50 struct dcon_priv {
  51         struct i2c_client *client;
  52         struct fb_info *fbinfo;
  53         struct backlight_device *bl_dev;
  54
  55         struct work_struct switch_source;
  56         struct notifier_block reboot_nb;
  57         struct notifier_block fbevent_nb;
  58
  59         /* Shadow register for the DCON_REG_MODE register */
  60         u8 disp_mode;
  61
  62         /* The current backlight value - this saves us some smbus traffic */
  63         u8 bl_val;
  64
  65         /* Current source, initialized at probe time */
  66         int curr_src;
  67
  68         /* Desired source */
  69         int pending_src;
  70
  71         /* Variables used during switches */
  72         bool switched;
  73         struct timespec irq_time;
  74         struct timespec load_time;
  75
  76         /* Current output type; true == mono, false == color */
  77         bool mono;
  78         bool asleep;
  79         /* This get set while controlling fb blank state from the driver */
  80         bool ignore_fb_events;
  81 };
  82
  83 struct dcon_platform_data {
  84         int (*init)(struct dcon_priv *);
  85         void (*bus_stabilize_wiggle)(void);
  86         void (*set_dconload)(int);
  87         int (*read_status)(u8 *);
  88 };
  89
  90 #include <linux/interrupt.h>
  91
  92 extern irqreturn_t dcon_interrupt(int irq, void *id);
  93
  94 #ifdef CONFIG_FB_OLPC_DCON_1
  95 extern struct dcon_platform_data dcon_pdata_xo_1;
  96 #endif
  97
  98 #ifdef CONFIG_FB_OLPC_DCON_1_5
  99 extern struct dcon_platform_data dcon_pdata_xo_1_5;
 100 #endif
 101
 102 #endif