/* SPDX-License-Identifier: GPL-2.0 */
|
#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 BIT(0)
|
#define MODE_SLEEP BIT(1)
|
#define MODE_SLEEP_AUTO BIT(2)
|
#define MODE_BL_ENABLE BIT(3)
|
#define MODE_BLANK BIT(4)
|
#define MODE_CSWIZZLE BIT(5)
|
#define MODE_COL_AA BIT(6)
|
#define MODE_MONO_LUMA BIT(7)
|
#define MODE_SCAN_INT BIT(8)
|
#define MODE_CLOCKDIV BIT(9)
|
#define MODE_DEBUG BIT(14)
|
#define MODE_SELFTEST BIT(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 BIT(0)
|
/* Memory controller power down function */
|
#define MEM_POWER_DOWN BIT(8)
|
/* Memory controller software reset */
|
#define MEM_SOFT_RESET BIT(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 *dcon);
|
void (*bus_stabilize_wiggle)(void);
|
void (*set_dconload)(int load);
|
int (*read_status)(u8 *status);
|
};
|
|
struct dcon_gpio {
|
const char *name;
|
unsigned long flags;
|
};
|
|
#include <linux/interrupt.h>
|
|
irqreturn_t dcon_interrupt(int irq, void *id);
|
|
extern struct dcon_platform_data dcon_pdata_xo_1;
|
extern struct dcon_platform_data dcon_pdata_xo_1_5;
|
|
#endif
|
