linux/drivers/video/fbdev/n411.c

/*
 * linux/drivers/video/n411.c -- Platform device for N411 EPD kit
 *
 * Copyright (C) 2008, Jaya Kumar
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file COPYING in the main directory of this archive for
 * more details.
 *
 * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
 *
 * This driver is written to be used with the Hecuba display controller
 * board, and tested with the EInk 800x600 display in 1 bit mode.
 * The interface between Hecuba and the host is TTL based GPIO. The
 * GPIO requirements are 8 writable data lines and 6 lines for control.
 * Only 4 of the controls are actually used here but 6 for future use.
 * The driver requires the IO addresses for data and control GPIO at
 * load time. It is also possible to use this display with a standard
 * PC parallel port.
 *
 * General notes:
 * - User must set dio_addr=0xIOADDR cio_addr=0xIOADDR c2io_addr=0xIOADDR
 *
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/list.h>
#include <linux/uaccess.h>
#include <linux/irq.h>

#include <video/hecubafb.h>

static unsigned long dio_addr;
static unsigned long cio_addr;
static unsigned long c2io_addr;
static unsigned long splashval;
static unsigned int nosplash;
static unsigned char ctl;

static void n411_set_ctl(struct hecubafb_par *par, unsigned char bit, unsigned
							char state)
{ … }

static unsigned char n411_get_ctl(struct hecubafb_par *par)
{ … }

static void n411_set_data(struct hecubafb_par *par, unsigned char value)
{ … }

static void n411_wait_for_ack(struct hecubafb_par *par, int clear)
{ … }

static int n411_init_control(struct hecubafb_par *par)
{ … }


static int n411_init_board(struct hecubafb_par *par)
{ … }

static struct hecuba_board n411_board = …;

static struct platform_device *n411_device;
static int __init n411_init(void)
{ … }

static void __exit n411_exit(void)
{ … }

module_init(…) …;
module_exit(n411_exit);

module_param(nosplash, uint, 0);
MODULE_PARM_DESC(…) …;
module_param_hw(dio_addr, ulong, ioport, 0);
MODULE_PARM_DESC(…) …;
module_param_hw(cio_addr, ulong, ioport, 0);
MODULE_PARM_DESC(…) …;
module_param_hw(c2io_addr, ulong, ioport, 0);
MODULE_PARM_DESC(…) …;
module_param(splashval, ulong, 0);
MODULE_PARM_DESC(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;