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Commit 0fb8379d authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

tty: delete briq_panel.c driver 



This driver is broken, as reported by Jiri, and to quote Ben:
	Just remove the driver, I don't think anybody cares.
so I'm doing just that here.

Reported-by: default avatarJiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6623d640

drivers/char/Kconfig

+0 −15
Original line number Diff line number Diff line
@@ -66,21 +66,6 @@ config TTY_PRINTK 


	  If unsure, say N.



config BRIQ_PANEL

	tristate 'Total Impact briQ front panel driver'

	depends on PPC_CHRP

	---help---

	  The briQ is a small footprint CHRP computer with a frontpanel VFD, a

	  tristate led and two switches. It is the size of a CDROM drive.



	  If you have such one and want anything showing on the VFD then you

	  must answer Y here.



	  To compile this driver as a module, choose M here: the

	  module will be called briq_panel.



	  It's safe to say N here.



config BFIN_OTP

	tristate "Blackfin On-Chip OTP Memory Support"

	depends on BLACKFIN && (BF51x || BF52x || BF54x)

drivers/char/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -16,7 +16,6 @@ obj-$(CONFIG_UV_MMTIMER) += uv_mmtimer.o 
obj-$(CONFIG_VIOTAPE)		+= viotape.o

obj-$(CONFIG_IBM_BSR)		+= bsr.o

obj-$(CONFIG_SGI_MBCS)		+= mbcs.o

obj-$(CONFIG_BRIQ_PANEL)	+= briq_panel.o

obj-$(CONFIG_BFIN_OTP)		+= bfin-otp.o



obj-$(CONFIG_PRINTER)		+= lp.o

drivers/char/briq_panel.c

deleted100644 → 0
+0 −266
Original line number Diff line number Diff line 
/*

 * Drivers for the Total Impact PPC based computer "BRIQ"

 * by Dr. Karsten Jeppesen

 *

 */



#include <linux/module.h>



#include <linux/types.h>

#include <linux/errno.h>

#include <linux/tty.h>

#include <linux/timer.h>

#include <linux/kernel.h>

#include <linux/wait.h>

#include <linux/string.h>

#include <linux/ioport.h>

#include <linux/delay.h>

#include <linux/miscdevice.h>

#include <linux/fs.h>

#include <linux/mm.h>

#include <linux/init.h>



#include <asm/uaccess.h>

#include <asm/io.h>

#include <asm/prom.h>



#define		BRIQ_PANEL_MINOR	156

#define		BRIQ_PANEL_VFD_IOPORT	0x0390

#define		BRIQ_PANEL_LED_IOPORT	0x0398

#define		BRIQ_PANEL_VER		"1.1 (04/20/2002)"

#define		BRIQ_PANEL_MSG0		"Loading Linux"



static int		vfd_is_open;

static unsigned char	vfd[40];

static int		vfd_cursor;

static unsigned char	ledpb, led;



static void update_vfd(void)

{

	int	i;



	/* cursor home */

	outb(0x02, BRIQ_PANEL_VFD_IOPORT);

	for (i=0; i<20; i++)

		outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1);



	/* cursor to next line */

	outb(0xc0, BRIQ_PANEL_VFD_IOPORT);

	for (i=20; i<40; i++)

		outb(vfd[i], BRIQ_PANEL_VFD_IOPORT + 1);



}



static void set_led(char state)

{

	if (state == 'R')

		led = 0x01;

	else if (state == 'G')

		led = 0x02;

	else if (state == 'Y')

		led = 0x03;

	else if (state == 'X')

		led = 0x00;

	outb(led, BRIQ_PANEL_LED_IOPORT);

}



static int briq_panel_open(struct inode *ino, struct file *filep)

{

	tty_lock();

	/* enforce single access, vfd_is_open is protected by BKL */

	if (vfd_is_open) {

		tty_unlock();

		return -EBUSY;

	}

	vfd_is_open = 1;



	tty_unlock();

	return 0;

}



static int briq_panel_release(struct inode *ino, struct file *filep)

{

	if (!vfd_is_open)

		return -ENODEV;



	vfd_is_open = 0;



	return 0;

}



static ssize_t briq_panel_read(struct file *file, char __user *buf, size_t count,

			 loff_t *ppos)

{

	unsigned short c;

	unsigned char cp;



	if (!vfd_is_open)

		return -ENODEV;



	c = (inb(BRIQ_PANEL_LED_IOPORT) & 0x000c) | (ledpb & 0x0003);

	set_led(' ');

	/* upper button released */

	if ((!(ledpb & 0x0004)) && (c & 0x0004)) {

		cp = ' ';

		ledpb = c;

		if (copy_to_user(buf, &cp, 1))

			return -EFAULT;

		return 1;

	}

	/* lower button released */

	else if ((!(ledpb & 0x0008)) && (c & 0x0008)) {

		cp = '\r';

		ledpb = c;

		if (copy_to_user(buf, &cp, 1))

			return -EFAULT;

		return 1;

	} else {

		ledpb = c;

		return 0;

	}

}



static void scroll_vfd( void )

{

	int	i;



	for (i=0; i<20; i++) {

		vfd[i] = vfd[i+20];

		vfd[i+20] = ' ';

	}

	vfd_cursor = 20;

}



static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_t len,

			  loff_t *ppos)

{

	size_t indx = len;

	int i, esc = 0;



	if (!vfd_is_open)

		return -EBUSY;



	for (;;) {

		char c;

		if (!indx)

			break;

		if (get_user(c, buf))

			return -EFAULT;

		if (esc) {

			set_led(c);

			esc = 0;

		} else if (c == 27) {

			esc = 1;

		} else if (c == 12) {

			/* do a form feed */

			for (i=0; i<40; i++)

				vfd[i] = ' ';

			vfd_cursor = 0;

		} else if (c == 10) {

			if (vfd_cursor < 20)

				vfd_cursor = 20;

			else if (vfd_cursor < 40)

				vfd_cursor = 40;

			else if (vfd_cursor < 60)

				vfd_cursor = 60;

			if (vfd_cursor > 59)

				scroll_vfd();

		} else {

			/* just a character */

			if (vfd_cursor > 39)

				scroll_vfd();

			vfd[vfd_cursor++] = c;

		}

		indx--;

		buf++;

	}

	update_vfd();



	return len;

}



static const struct file_operations briq_panel_fops = {

	.owner		= THIS_MODULE,

	.read		= briq_panel_read,

	.write		= briq_panel_write,

	.open		= briq_panel_open,

	.release	= briq_panel_release,

	.llseek		= noop_llseek,

};



static struct miscdevice briq_panel_miscdev = {

	BRIQ_PANEL_MINOR,

	"briq_panel",

	&briq_panel_fops

};



static int __init briq_panel_init(void)

{

	struct device_node *root = of_find_node_by_path("/");

	const char *machine;

	int i;



	machine = of_get_property(root, "model", NULL);

	if (!machine || strncmp(machine, "TotalImpact,BRIQ-1", 18) != 0) {

		of_node_put(root);

		return -ENODEV;

	}

	of_node_put(root);



	printk(KERN_INFO

		"briq_panel: v%s Dr. Karsten Jeppesen (kj@totalimpact.com)\n",

		BRIQ_PANEL_VER);



	if (!request_region(BRIQ_PANEL_VFD_IOPORT, 4, "BRIQ Front Panel"))

		return -EBUSY;



	if (!request_region(BRIQ_PANEL_LED_IOPORT, 2, "BRIQ Front Panel")) {

		release_region(BRIQ_PANEL_VFD_IOPORT, 4);

		return -EBUSY;

	}

	ledpb = inb(BRIQ_PANEL_LED_IOPORT) & 0x000c;



	if (misc_register(&briq_panel_miscdev) < 0) {

		release_region(BRIQ_PANEL_VFD_IOPORT, 4);

		release_region(BRIQ_PANEL_LED_IOPORT, 2);

		return -EBUSY;

	}



	outb(0x38, BRIQ_PANEL_VFD_IOPORT);	/* Function set */

	outb(0x01, BRIQ_PANEL_VFD_IOPORT);	/* Clear display */

	outb(0x0c, BRIQ_PANEL_VFD_IOPORT);	/* Display on */

	outb(0x06, BRIQ_PANEL_VFD_IOPORT);	/* Entry normal */

	for (i=0; i<40; i++)

		vfd[i]=' ';

#ifndef MODULE

	vfd[0] = 'L';

	vfd[1] = 'o';

	vfd[2] = 'a';

	vfd[3] = 'd';

	vfd[4] = 'i';

	vfd[5] = 'n';

	vfd[6] = 'g';

	vfd[7] = ' ';

	vfd[8] = '.';

	vfd[9] = '.';

	vfd[10] = '.';

#endif /* !MODULE */



	update_vfd();



	return 0;

}



static void __exit briq_panel_exit(void)

{

	misc_deregister(&briq_panel_miscdev);

	release_region(BRIQ_PANEL_VFD_IOPORT, 4);

	release_region(BRIQ_PANEL_LED_IOPORT, 2);

}



module_init(briq_panel_init);

module_exit(briq_panel_exit);



MODULE_LICENSE("GPL");

MODULE_AUTHOR("Karsten Jeppesen <karsten@jeppesens.com>");

MODULE_DESCRIPTION("Driver for the Total Impact briQ front panel");