olpc_dcon.h

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#ifndef OLPC_DCON_H_
#define OLPC_DCON_H_

#include <linux/notifier.h>
#include <linux/workqueue.h>

/* DCON registers */

#define DCON_REG_ID      0
#define DCON_REG_MODE        1

#define MODE_PASSTHRU   (1<<0)
#define MODE_SLEEP  (1<<1)
#define MODE_SLEEP_AUTO (1<<2)
#define MODE_BL_ENABLE  (1<<3)
#define MODE_BLANK  (1<<4)
#define MODE_CSWIZZLE   (1<<5)
#define MODE_COL_AA (1<<6)
#define MODE_MONO_LUMA  (1<<7)
#define MODE_SCAN_INT   (1<<8)
#define MODE_CLOCKDIV   (1<<9)
#define MODE_DEBUG  (1<<14)
#define MODE_SELFTEST   (1<<15)

#define DCON_REG_HRES       2
#define DCON_REG_HTOTAL     3
#define DCON_REG_HSYNC_WIDTH    4
#define DCON_REG_VRES       5
#define DCON_REG_VTOTAL     6
#define DCON_REG_VSYNC_WIDTH    7
#define DCON_REG_TIMEOUT    8
#define DCON_REG_SCAN_INT   9
#define DCON_REG_BRIGHT     10

/* Status values */

#define DCONSTAT_SCANINT    0
#define DCONSTAT_SCANINT_DCON   1
#define DCONSTAT_DISPLAYLOAD    2
#define DCONSTAT_MISSED     3

/* Source values */

#define DCON_SOURCE_DCON        0
#define DCON_SOURCE_CPU         1

/* Interrupt */
#define DCON_IRQ                6

struct dcon_priv {
    struct i2c_client *client;
    struct fb_info *fbinfo;
    struct backlight_device *bl_dev;

    struct work_struct switch_source;
    struct notifier_block reboot_nb;
    struct notifier_block fbevent_nb;

    /* Shadow register for the DCON_REG_MODE register */
    u8 disp_mode;

    /* The current backlight value - this saves us some smbus traffic */
    u8 bl_val;

    /* Current source, initialized at probe time */
    int curr_src;

    /* Desired source */
    int pending_src;

    /* Variables used during switches */
    bool switched;
    struct timespec irq_time;
    struct timespec load_time;

    /* Current output type; true == mono, false == color */
    bool mono;
    bool asleep;
    /* This get set while controlling fb blank state from the driver */
    bool ignore_fb_events;
};

struct dcon_platform_data {
    int (*init)(struct dcon_priv *);
    void (*bus_stabilize_wiggle)(void);
    void (*set_dconload)(int);
    int (*read_status)(u8 *);
};

#include <linux/interrupt.h>

extern irqreturn_t dcon_interrupt(int irq, void *id);

#ifdef CONFIG_FB_OLPC_DCON_1
extern struct dcon_platform_data dcon_pdata_xo_1;
#endif

#ifdef CONFIG_FB_OLPC_DCON_1_5
extern struct dcon_platform_data dcon_pdata_xo_1_5;
#endif

#endif