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/* 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);
#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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