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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | #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 0x2
#define DCON_REG_HTOTAL 0x3
#define DCON_REG_HSYNC_WIDTH 0x4
#define DCON_REG_VRES 0x5
#define DCON_REG_VTOTAL 0x6
#define DCON_REG_VSYNC_WIDTH 0x7
#define DCON_REG_TIMEOUT 0x8
#define DCON_REG_SCAN_INT 0x9
#define DCON_REG_BRIGHT 0xa
#define DCON_REG_MEM_OPT_A 0x41
#define DCON_REG_MEM_OPT_B 0x42
/* Load Delay Locked Loop (DLL) settings for clock delay */
#define MEM_DLL_CLOCK_DELAY (1<<0)
/* Memory controller power down function */
#define MEM_POWER_DOWN (1<<8)
/* Memory controller software reset */
#define MEM_SOFT_RESET (1<<0)
/* 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;
wait_queue_head_t waitq;
struct work_struct switch_source;
struct notifier_block reboot_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;
ktime_t irq_time;
ktime_t 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>
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
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