Commit 1208ec59 authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Greg Kroah-Hartman
Browse files

char: remove VR41XX related char driver 



Commit d3164e2f ("MIPS: Remove VR41xx support") removed support
for MIPS VR41xx platform, so remove exclusive drivers for this
platform, too.

Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://lore.kernel.org/r/20220716130802.11660-1-tsbogend@alpha.franken.de


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9f8267b9

drivers/char/Kconfig

+0 −5
Original line number Diff line number Diff line
@@ -247,11 +247,6 @@ config SONYPI 
	  To compile this driver as a module, choose M here: the

	  module will be called sonypi.



config GPIO_TB0219

	tristate "TANBAC TB0219 GPIO support"

	depends on TANBAC_TB022X

	select GPIO_VR41XX



source "drivers/char/pcmcia/Kconfig"



config MWAVE

drivers/char/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -31,7 +31,6 @@ obj-$(CONFIG_NWFLASH) += nwflash.o 
obj-$(CONFIG_SCx200_GPIO)	+= scx200_gpio.o

obj-$(CONFIG_PC8736x_GPIO)	+= pc8736x_gpio.o

obj-$(CONFIG_NSC_GPIO)		+= nsc_gpio.o

obj-$(CONFIG_GPIO_TB0219)	+= tb0219.o

obj-$(CONFIG_TELCLOCK)		+= tlclk.o



obj-$(CONFIG_MWAVE)		+= mwave/

drivers/char/tb0219.c

deleted100644 → 0
+0 −359
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-or-later

/*

 *  Driver for TANBAC TB0219 base board.

 *

 *  Copyright (C) 2005  Yoichi Yuasa <yuasa@linux-mips.org>

 */

#include <linux/platform_device.h>

#include <linux/fs.h>

#include <linux/init.h>

#include <linux/module.h>

#include <linux/uaccess.h>



#include <asm/io.h>

#include <asm/reboot.h>

#include <asm/vr41xx/giu.h>

#include <asm/vr41xx/tb0219.h>



MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");

MODULE_DESCRIPTION("TANBAC TB0219 base board driver");

MODULE_LICENSE("GPL");



static int major;	/* default is dynamic major device number */

module_param(major, int, 0);

MODULE_PARM_DESC(major, "Major device number");



static void (*old_machine_restart)(char *command);

static void __iomem *tb0219_base;

static DEFINE_SPINLOCK(tb0219_lock);



#define tb0219_read(offset)		readw(tb0219_base + (offset))

#define tb0219_write(offset, value)	writew((value), tb0219_base + (offset))



#define TB0219_START	0x0a000000UL

#define TB0219_SIZE	0x20UL



#define TB0219_LED			0x00

#define TB0219_GPIO_INPUT		0x02

#define TB0219_GPIO_OUTPUT		0x04

#define TB0219_DIP_SWITCH		0x06

#define TB0219_MISC			0x08

#define TB0219_RESET			0x0e

#define TB0219_PCI_SLOT1_IRQ_STATUS	0x10

#define TB0219_PCI_SLOT2_IRQ_STATUS	0x12

#define TB0219_PCI_SLOT3_IRQ_STATUS	0x14



typedef enum {

	TYPE_LED,

	TYPE_GPIO_OUTPUT,

} tb0219_type_t;



/*

 * Minor device number

 *	 0 = 7 segment LED

 *

 *	16 = GPIO IN 0

 *	17 = GPIO IN 1

 *	18 = GPIO IN 2

 *	19 = GPIO IN 3

 *	20 = GPIO IN 4

 *	21 = GPIO IN 5

 *	22 = GPIO IN 6

 *	23 = GPIO IN 7

 *

 *	32 = GPIO OUT 0

 *	33 = GPIO OUT 1

 *	34 = GPIO OUT 2

 *	35 = GPIO OUT 3

 *	36 = GPIO OUT 4

 *	37 = GPIO OUT 5

 *	38 = GPIO OUT 6

 *	39 = GPIO OUT 7

 *

 *	48 = DIP switch 1

 *	49 = DIP switch 2

 *	50 = DIP switch 3

 *	51 = DIP switch 4

 *	52 = DIP switch 5

 *	53 = DIP switch 6

 *	54 = DIP switch 7

 *	55 = DIP switch 8

 */



static inline char get_led(void)

{

	return (char)tb0219_read(TB0219_LED);

}



static inline char get_gpio_input_pin(unsigned int pin)

{

	uint16_t values;



	values = tb0219_read(TB0219_GPIO_INPUT);

	if (values & (1 << pin))

		return '1';



	return '0';

}



static inline char get_gpio_output_pin(unsigned int pin)

{

	uint16_t values;



	values = tb0219_read(TB0219_GPIO_OUTPUT);

	if (values & (1 << pin))

		return '1';



	return '0';

}



static inline char get_dip_switch(unsigned int pin)

{

	uint16_t values;



	values = tb0219_read(TB0219_DIP_SWITCH);

	if (values & (1 << pin))

		return '1';



	return '0';

}



static inline int set_led(char command)

{

	tb0219_write(TB0219_LED, command);



	return 0;

}



static inline int set_gpio_output_pin(unsigned int pin, char command)

{

	unsigned long flags;

	uint16_t value;



	if (command != '0' && command != '1')

		return -EINVAL;



	spin_lock_irqsave(&tb0219_lock, flags);

	value = tb0219_read(TB0219_GPIO_OUTPUT);

	if (command == '0')

		value &= ~(1 << pin);

	else

		value |= 1 << pin;

	tb0219_write(TB0219_GPIO_OUTPUT, value);

	spin_unlock_irqrestore(&tb0219_lock, flags);



	return 0;



}



static ssize_t tanbac_tb0219_read(struct file *file, char __user *buf, size_t len,

                                  loff_t *ppos)

{

	unsigned int minor;

	char value;



	minor = iminor(file_inode(file));

	switch (minor) {

	case 0:

		value = get_led();

		break;

	case 16 ... 23:

		value = get_gpio_input_pin(minor - 16);

		break;

	case 32 ... 39:

		value = get_gpio_output_pin(minor - 32);

		break;

	case 48 ... 55:

		value = get_dip_switch(minor - 48);

		break;

	default:

		return -EBADF;

	}



	if (len <= 0)

		return -EFAULT;



	if (put_user(value, buf))

		return -EFAULT;



	return 1;

}



static ssize_t tanbac_tb0219_write(struct file *file, const char __user *data,

                                   size_t len, loff_t *ppos)

{

	unsigned int minor;

	tb0219_type_t type;

	size_t i;

	int retval = 0;

	char c;



	minor = iminor(file_inode(file));

	switch (minor) {

	case 0:

		type = TYPE_LED;

		break;

	case 32 ... 39:

		type = TYPE_GPIO_OUTPUT;

		break;

	default:

		return -EBADF;

	}



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

		if (get_user(c, data + i))

			return -EFAULT;



		switch (type) {

		case TYPE_LED:

			retval = set_led(c);

			break;

		case TYPE_GPIO_OUTPUT:

			retval = set_gpio_output_pin(minor - 32, c);

			break;

		}



		if (retval < 0)

			break;

	}



	return i;

}



static int tanbac_tb0219_open(struct inode *inode, struct file *file)

{

	unsigned int minor;



	minor = iminor(inode);

	switch (minor) {

	case 0:

	case 16 ... 23:

	case 32 ... 39:

	case 48 ... 55:

		return stream_open(inode, file);

	default:

		break;

	}



	return -EBADF;

}



static int tanbac_tb0219_release(struct inode *inode, struct file *file)

{

	return 0;

}



static const struct file_operations tb0219_fops = {

	.owner		= THIS_MODULE,

	.read		= tanbac_tb0219_read,

	.write		= tanbac_tb0219_write,

	.open		= tanbac_tb0219_open,

	.release	= tanbac_tb0219_release,

	.llseek		= no_llseek,

};



static void tb0219_restart(char *command)

{

	tb0219_write(TB0219_RESET, 0);

}



static void tb0219_pci_irq_init(void)

{

	/* PCI Slot 1 */

	vr41xx_set_irq_trigger(TB0219_PCI_SLOT1_PIN, IRQ_TRIGGER_LEVEL, IRQ_SIGNAL_THROUGH);

	vr41xx_set_irq_level(TB0219_PCI_SLOT1_PIN, IRQ_LEVEL_LOW);



	/* PCI Slot 2 */

	vr41xx_set_irq_trigger(TB0219_PCI_SLOT2_PIN, IRQ_TRIGGER_LEVEL, IRQ_SIGNAL_THROUGH);

	vr41xx_set_irq_level(TB0219_PCI_SLOT2_PIN, IRQ_LEVEL_LOW);



	/* PCI Slot 3 */

	vr41xx_set_irq_trigger(TB0219_PCI_SLOT3_PIN, IRQ_TRIGGER_LEVEL, IRQ_SIGNAL_THROUGH);

	vr41xx_set_irq_level(TB0219_PCI_SLOT3_PIN, IRQ_LEVEL_LOW);

}



static int tb0219_probe(struct platform_device *dev)

{

	int retval;



	if (request_mem_region(TB0219_START, TB0219_SIZE, "TB0219") == NULL)

		return -EBUSY;



	tb0219_base = ioremap(TB0219_START, TB0219_SIZE);

	if (tb0219_base == NULL) {

		release_mem_region(TB0219_START, TB0219_SIZE);

		return -ENOMEM;

	}



	retval = register_chrdev(major, "TB0219", &tb0219_fops);

	if (retval < 0) {

		iounmap(tb0219_base);

		tb0219_base = NULL;

		release_mem_region(TB0219_START, TB0219_SIZE);

		return retval;

	}



	old_machine_restart = _machine_restart;

	_machine_restart = tb0219_restart;



	tb0219_pci_irq_init();



	if (major == 0) {

		major = retval;

		printk(KERN_INFO "TB0219: major number %d\n", major);

	}



	return 0;

}



static int tb0219_remove(struct platform_device *dev)

{

	_machine_restart = old_machine_restart;



	iounmap(tb0219_base);

	tb0219_base = NULL;



	release_mem_region(TB0219_START, TB0219_SIZE);



	return 0;

}



static struct platform_device *tb0219_platform_device;



static struct platform_driver tb0219_device_driver = {

	.probe		= tb0219_probe,

	.remove		= tb0219_remove,

	.driver		= {

		.name	= "TB0219",

	},

};



static int __init tanbac_tb0219_init(void)

{

	int retval;



	tb0219_platform_device = platform_device_alloc("TB0219", -1);

	if (!tb0219_platform_device)

		return -ENOMEM;



	retval = platform_device_add(tb0219_platform_device);

	if (retval < 0) {

		platform_device_put(tb0219_platform_device);

		return retval;

	}



	retval = platform_driver_register(&tb0219_device_driver);

	if (retval < 0)

		platform_device_unregister(tb0219_platform_device);



	return retval;

}



static void __exit tanbac_tb0219_exit(void)

{

	platform_driver_unregister(&tb0219_device_driver);

	platform_device_unregister(tb0219_platform_device);

}



module_init(tanbac_tb0219_init);

module_exit(tanbac_tb0219_exit);