[PATCH] gpio: remove VR41XX related gpio driver

Thomas Bogendoerfer
2022-07-15T14:00:24Z

From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Commit d3164e2f3b0a ("MIPS: Remove VR41xx support") removed support
for MIPS VR41xx platform, so remove exclusive drivers for this
platform, too.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/char/Kconfig | 5 -
drivers/char/Makefile | 1 -
drivers/char/tb0219.c | 358 ------------------------
drivers/gpio/Kconfig | 6 -
drivers/gpio/Makefile | 1 -
drivers/gpio/gpio-vr41xx.c | 541 -------------------------------------
6 files changed, 912 deletions(-)
delete mode 100644 drivers/char/tb0219.c
delete mode 100644 drivers/gpio/gpio-vr41xx.c

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 30192e123e5f..0f378d29dab0 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -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
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 264eb398fdd4..1b35d1724565 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -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/
diff --git a/drivers/char/tb0219.c b/drivers/char/tb0219.c
deleted file mode 100644
index 13c20b6594c3..000000000000
--- a/drivers/char/tb0219.c
+++ /dev/null
@@ -1,358 +0,0 @@
-// 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,
-};
-
-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);
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 51b36c417704..4015f22365f7 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -699,12 +699,6 @@ config GPIO_VISCONTI
help
Say yes here to support GPIO on Tohisba Visconti.

-config GPIO_VR41XX
- tristate "NEC VR4100 series General-purpose I/O Unit support"
- depends on CPU_VR41XX
- help
- Say yes here to support the NEC VR4100 series General-purpose I/O Unit.
-
config GPIO_VX855
tristate "VIA VX855/VX875 GPIO"
depends on (X86 || COMPILE_TEST) && PCI
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 30141fec12be..795e82af7d27 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -170,7 +170,6 @@ obj-$(CONFIG_GPIO_VF610) += gpio-vf610.o
obj-$(CONFIG_GPIO_VIPERBOARD) += gpio-viperboard.o
obj-$(CONFIG_GPIO_VIRTIO) += gpio-virtio.o
obj-$(CONFIG_GPIO_VISCONTI) += gpio-visconti.o
-obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o
obj-$(CONFIG_GPIO_VX855) += gpio-vx855.o
obj-$(CONFIG_GPIO_WCD934X) += gpio-wcd934x.o
obj-$(CONFIG_GPIO_WHISKEY_COVE) += gpio-wcove.o
diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c
deleted file mode 100644
index 8d09b619c166..000000000000
--- a/drivers/gpio/gpio-vr41xx.c
+++ /dev/null
@@ -1,541 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Driver for NEC VR4100 series General-purpose I/O Unit.
- *
- * Copyright (C) 2002 MontaVista Software Inc.
- * Author: Yoichi Yuasa <source@mvista.com>
- * Copyright (C) 2003-2009 Yoichi Yuasa <yuasa@linux-mips.org>
- */
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/gpio/driver.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-
-#include <asm/vr41xx/giu.h>
-#include <asm/vr41xx/irq.h>
-#include <asm/vr41xx/vr41xx.h>
-
-MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
-MODULE_DESCRIPTION("NEC VR4100 series General-purpose I/O Unit driver");
-MODULE_LICENSE("GPL");
-
-#define GIUIOSELL 0x00
-#define GIUIOSELH 0x02
-#define GIUPIODL 0x04
-#define GIUPIODH 0x06
-#define GIUINTSTATL 0x08
-#define GIUINTSTATH 0x0a
-#define GIUINTENL 0x0c
-#define GIUINTENH 0x0e
-#define GIUINTTYPL 0x10
-#define GIUINTTYPH 0x12
-#define GIUINTALSELL 0x14
-#define GIUINTALSELH 0x16
-#define GIUINTHTSELL 0x18
-#define GIUINTHTSELH 0x1a
-#define GIUPODATL 0x1c
-#define GIUPODATEN 0x1c
-#define GIUPODATH 0x1e
- #define PIOEN0 0x0100
- #define PIOEN1 0x0200
-#define GIUPODAT 0x1e
-#define GIUFEDGEINHL 0x20
-#define GIUFEDGEINHH 0x22
-#define GIUREDGEINHL 0x24
-#define GIUREDGEINHH 0x26
-
-#define GIUUSEUPDN 0x1e0
-#define GIUTERMUPDN 0x1e2
-
-#define GPIO_HAS_PULLUPDOWN_IO 0x0001
-#define GPIO_HAS_OUTPUT_ENABLE 0x0002
-#define GPIO_HAS_INTERRUPT_EDGE_SELECT 0x0100
-
-enum {
- GPIO_INPUT,
- GPIO_OUTPUT,
-};
-
-static DEFINE_SPINLOCK(giu_lock);
-static unsigned long giu_flags;
-
-static void __iomem *giu_base;
-static struct gpio_chip vr41xx_gpio_chip;
-
-#define giu_read(offset) readw(giu_base + (offset))
-#define giu_write(offset, value) writew((value), giu_base + (offset))
-
-#define GPIO_PIN_OF_IRQ(irq) ((irq) - GIU_IRQ_BASE)
-#define GIUINT_HIGH_OFFSET 16
-#define GIUINT_HIGH_MAX 32
-
-static inline u16 giu_set(u16 offset, u16 set)
-{
- u16 data;
-
- data = giu_read(offset);
- data |= set;
- giu_write(offset, data);
-
- return data;
-}
-
-static inline u16 giu_clear(u16 offset, u16 clear)
-{
- u16 data;
-
- data = giu_read(offset);
- data &= ~clear;
- giu_write(offset, data);
-
- return data;
-}
-
-static void ack_giuint_low(struct irq_data *d)
-{
- giu_write(GIUINTSTATL, 1 << GPIO_PIN_OF_IRQ(d->irq));
-}
-
-static void mask_giuint_low(struct irq_data *d)
-{
- giu_clear(GIUINTENL, 1 << GPIO_PIN_OF_IRQ(d->irq));
-}
-
-static void mask_ack_giuint_low(struct irq_data *d)
-{
- unsigned int pin;
-
- pin = GPIO_PIN_OF_IRQ(d->irq);
- giu_clear(GIUINTENL, 1 << pin);
- giu_write(GIUINTSTATL, 1 << pin);
-}
-
-static void unmask_giuint_low(struct irq_data *d)
-{
- giu_set(GIUINTENL, 1 << GPIO_PIN_OF_IRQ(d->irq));
-}
-
-static unsigned int startup_giuint(struct irq_data *data)
-{
- int ret;
-
- ret = gpiochip_lock_as_irq(&vr41xx_gpio_chip, irqd_to_hwirq(data));
- if (ret) {
- dev_err(vr41xx_gpio_chip.parent,
- "unable to lock HW IRQ %lu for IRQ\n",
- data->hwirq);
- return ret;
- }
-
- /* Satisfy the .enable semantics by unmasking the line */
- unmask_giuint_low(data);
- return 0;
-}
-
-static void shutdown_giuint(struct irq_data *data)
-{
- mask_giuint_low(data);
- gpiochip_unlock_as_irq(&vr41xx_gpio_chip, data->hwirq);
-}
-
-static struct irq_chip giuint_low_irq_chip = {
- .name = "GIUINTL",
- .irq_ack = ack_giuint_low,
- .irq_mask = mask_giuint_low,
- .irq_mask_ack = mask_ack_giuint_low,
- .irq_unmask = unmask_giuint_low,
- .irq_startup = startup_giuint,
- .irq_shutdown = shutdown_giuint,
-};
-
-static void ack_giuint_high(struct irq_data *d)
-{
- giu_write(GIUINTSTATH,
- 1 << (GPIO_PIN_OF_IRQ(d->irq) - GIUINT_HIGH_OFFSET));
-}
-
-static void mask_giuint_high(struct irq_data *d)
-{
- giu_clear(GIUINTENH, 1 << (GPIO_PIN_OF_IRQ(d->irq) - GIUINT_HIGH_OFFSET));
-}
-
-static void mask_ack_giuint_high(struct irq_data *d)
-{
- unsigned int pin;
-
- pin = GPIO_PIN_OF_IRQ(d->irq) - GIUINT_HIGH_OFFSET;
- giu_clear(GIUINTENH, 1 << pin);
- giu_write(GIUINTSTATH, 1 << pin);
-}
-
-static void unmask_giuint_high(struct irq_data *d)
-{
- giu_set(GIUINTENH, 1 << (GPIO_PIN_OF_IRQ(d->irq) - GIUINT_HIGH_OFFSET));
-}
-
-static struct irq_chip giuint_high_irq_chip = {
- .name = "GIUINTH",
- .irq_ack = ack_giuint_high,
- .irq_mask = mask_giuint_high,
- .irq_mask_ack = mask_ack_giuint_high,
- .irq_unmask = unmask_giuint_high,
-};
-
-static int giu_get_irq(unsigned int irq)
-{
- u16 pendl, pendh, maskl, maskh;
- int i;
-
- pendl = giu_read(GIUINTSTATL);
- pendh = giu_read(GIUINTSTATH);
- maskl = giu_read(GIUINTENL);
- maskh = giu_read(GIUINTENH);
-
- maskl &= pendl;
- maskh &= pendh;
-
- if (maskl) {
- for (i = 0; i < 16; i++) {
- if (maskl & (1 << i))
- return GIU_IRQ(i);
- }
- } else if (maskh) {
- for (i = 0; i < 16; i++) {
- if (maskh & (1 << i))
- return GIU_IRQ(i + GIUINT_HIGH_OFFSET);
- }
- }
-
- printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
- maskl, pendl, maskh, pendh);
-
- return -EINVAL;
-}
-
-void vr41xx_set_irq_trigger(unsigned int pin, irq_trigger_t trigger,
- irq_signal_t signal)
-{
- u16 mask;
-
- if (pin < GIUINT_HIGH_OFFSET) {
- mask = 1 << pin;
- if (trigger != IRQ_TRIGGER_LEVEL) {
- giu_set(GIUINTTYPL, mask);
- if (signal == IRQ_SIGNAL_HOLD)
- giu_set(GIUINTHTSELL, mask);
- else
- giu_clear(GIUINTHTSELL, mask);
- if (giu_flags & GPIO_HAS_INTERRUPT_EDGE_SELECT) {
- switch (trigger) {
- case IRQ_TRIGGER_EDGE_FALLING:
- giu_set(GIUFEDGEINHL, mask);
- giu_clear(GIUREDGEINHL, mask);
- break;
- case IRQ_TRIGGER_EDGE_RISING:
- giu_clear(GIUFEDGEINHL, mask);
- giu_set(GIUREDGEINHL, mask);
- break;
- default:
- giu_set(GIUFEDGEINHL, mask);
- giu_set(GIUREDGEINHL, mask);
- break;
- }
- }
- irq_set_chip_and_handler(GIU_IRQ(pin),
- &giuint_low_irq_chip,
- handle_edge_irq);
- } else {
- giu_clear(GIUINTTYPL, mask);
- giu_clear(GIUINTHTSELL, mask);
- irq_set_chip_and_handler(GIU_IRQ(pin),
- &giuint_low_irq_chip,
- handle_level_irq);
- }
- giu_write(GIUINTSTATL, mask);
- } else if (pin < GIUINT_HIGH_MAX) {
- mask = 1 << (pin - GIUINT_HIGH_OFFSET);
- if (trigger != IRQ_TRIGGER_LEVEL) {
- giu_set(GIUINTTYPH, mask);
- if (signal == IRQ_SIGNAL_HOLD)
- giu_set(GIUINTHTSELH, mask);
- else
- giu_clear(GIUINTHTSELH, mask);
- if (giu_flags & GPIO_HAS_INTERRUPT_EDGE_SELECT) {
- switch (trigger) {
- case IRQ_TRIGGER_EDGE_FALLING:
- giu_set(GIUFEDGEINHH, mask);
- giu_clear(GIUREDGEINHH, mask);
- break;
- case IRQ_TRIGGER_EDGE_RISING:
- giu_clear(GIUFEDGEINHH, mask);
- giu_set(GIUREDGEINHH, mask);
- break;
- default:
- giu_set(GIUFEDGEINHH, mask);
- giu_set(GIUREDGEINHH, mask);
- break;
- }
- }
- irq_set_chip_and_handler(GIU_IRQ(pin),
- &giuint_high_irq_chip,
- handle_edge_irq);
- } else {
- giu_clear(GIUINTTYPH, mask);
- giu_clear(GIUINTHTSELH, mask);
- irq_set_chip_and_handler(GIU_IRQ(pin),
- &giuint_high_irq_chip,
- handle_level_irq);
- }
- giu_write(GIUINTSTATH, mask);
- }
-}
-EXPORT_SYMBOL_GPL(vr41xx_set_irq_trigger);
-
-void vr41xx_set_irq_level(unsigned int pin, irq_level_t level)
-{
- u16 mask;
-
- if (pin < GIUINT_HIGH_OFFSET) {
- mask = 1 << pin;
- if (level == IRQ_LEVEL_HIGH)
- giu_set(GIUINTALSELL, mask);
- else
- giu_clear(GIUINTALSELL, mask);
- giu_write(GIUINTSTATL, mask);
- } else if (pin < GIUINT_HIGH_MAX) {
- mask = 1 << (pin - GIUINT_HIGH_OFFSET);
- if (level == IRQ_LEVEL_HIGH)
- giu_set(GIUINTALSELH, mask);
- else
- giu_clear(GIUINTALSELH, mask);
- giu_write(GIUINTSTATH, mask);
- }
-}
-EXPORT_SYMBOL_GPL(vr41xx_set_irq_level);
-
-static int giu_set_direction(struct gpio_chip *chip, unsigned pin, int dir)
-{
- u16 offset, mask, reg;
- unsigned long flags;
-
- if (pin >= chip->ngpio)
- return -EINVAL;
-
- if (pin < 16) {
- offset = GIUIOSELL;
- mask = 1 << pin;
- } else if (pin < 32) {
- offset = GIUIOSELH;
- mask = 1 << (pin - 16);
- } else {
- if (giu_flags & GPIO_HAS_OUTPUT_ENABLE) {
- offset = GIUPODATEN;
- mask = 1 << (pin - 32);
- } else {
- switch (pin) {
- case 48:
- offset = GIUPODATH;
- mask = PIOEN0;
- break;
- case 49:
- offset = GIUPODATH;
- mask = PIOEN1;
- break;
- default:
- return -EINVAL;
- }
- }
- }
-
- spin_lock_irqsave(&giu_lock, flags);
-
- reg = giu_read(offset);
- if (dir == GPIO_OUTPUT)
- reg |= mask;
- else
- reg &= ~mask;
- giu_write(offset, reg);
-
- spin_unlock_irqrestore(&giu_lock, flags);
-
- return 0;
-}
-
-static int vr41xx_gpio_get(struct gpio_chip *chip, unsigned pin)
-{
- u16 reg, mask;
-
- if (pin >= chip->ngpio)
- return -EINVAL;
-
- if (pin < 16) {
- reg = giu_read(GIUPIODL);
- mask = 1 << pin;
- } else if (pin < 32) {
- reg = giu_read(GIUPIODH);
- mask = 1 << (pin - 16);
- } else if (pin < 48) {
- reg = giu_read(GIUPODATL);
- mask = 1 << (pin - 32);
- } else {
- reg = giu_read(GIUPODATH);
- mask = 1 << (pin - 48);
- }
-
- if (reg & mask)
- return 1;
-
- return 0;
-}
-
-static void vr41xx_gpio_set(struct gpio_chip *chip, unsigned pin,
- int value)
-{
- u16 offset, mask, reg;
- unsigned long flags;
-
- if (pin >= chip->ngpio)
- return;
-
- if (pin < 16) {
- offset = GIUPIODL;
- mask = 1 << pin;
- } else if (pin < 32) {
- offset = GIUPIODH;
- mask = 1 << (pin - 16);
- } else if (pin < 48) {
- offset = GIUPODATL;
- mask = 1 << (pin - 32);
- } else {
- offset = GIUPODATH;
- mask = 1 << (pin - 48);
- }
-
- spin_lock_irqsave(&giu_lock, flags);
-
- reg = giu_read(offset);
- if (value)
- reg |= mask;
- else
- reg &= ~mask;
- giu_write(offset, reg);
-
- spin_unlock_irqrestore(&giu_lock, flags);
-}
-
-
-static int vr41xx_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
- return giu_set_direction(chip, offset, GPIO_INPUT);
-}
-
-static int vr41xx_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
- int value)
-{
- vr41xx_gpio_set(chip, offset, value);
-
- return giu_set_direction(chip, offset, GPIO_OUTPUT);
-}
-
-static int vr41xx_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
- if (offset >= chip->ngpio)
- return -EINVAL;
-
- return GIU_IRQ_BASE + offset;
-}
-
-static struct gpio_chip vr41xx_gpio_chip = {
- .label = "vr41xx",
- .owner = THIS_MODULE,
- .direction_input = vr41xx_gpio_direction_input,
- .get = vr41xx_gpio_get,
- .direction_output = vr41xx_gpio_direction_output,
- .set = vr41xx_gpio_set,
- .to_irq = vr41xx_gpio_to_irq,
-};
-
-static int giu_probe(struct platform_device *pdev)
-{
- unsigned int trigger, i, pin;
- struct irq_chip *chip;
- int irq;
-
- switch (pdev->id) {
- case GPIO_50PINS_PULLUPDOWN:
- giu_flags = GPIO_HAS_PULLUPDOWN_IO;
- vr41xx_gpio_chip.ngpio = 50;
- break;
- case GPIO_36PINS:
- vr41xx_gpio_chip.ngpio = 36;
- break;
- case GPIO_48PINS_EDGE_SELECT:
- giu_flags = GPIO_HAS_INTERRUPT_EDGE_SELECT;
- vr41xx_gpio_chip.ngpio = 48;
- break;
- default:
- dev_err(&pdev->dev, "GIU: unknown ID %d\n", pdev->id);
- return -ENODEV;
- }
-
- giu_base = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(giu_base))
- return PTR_ERR(giu_base);
-
- vr41xx_gpio_chip.parent = &pdev->dev;
-
- if (gpiochip_add_data(&vr41xx_gpio_chip, NULL))
- return -ENODEV;
-
- giu_write(GIUINTENL, 0);
- giu_write(GIUINTENH, 0);
-
- trigger = giu_read(GIUINTTYPH) << 16;
- trigger |= giu_read(GIUINTTYPL);
- for (i = GIU_IRQ_BASE; i <= GIU_IRQ_LAST; i++) {
- pin = GPIO_PIN_OF_IRQ(i);
- if (pin < GIUINT_HIGH_OFFSET)
- chip = &giuint_low_irq_chip;
- else
- chip = &giuint_high_irq_chip;
-
- if (trigger & (1 << pin))
- irq_set_chip_and_handler(i, chip, handle_edge_irq);
- else
- irq_set_chip_and_handler(i, chip, handle_level_irq);
-
- }
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0 || irq >= nr_irqs)
- return -EBUSY;
-
- return cascade_irq(irq, giu_get_irq);
-}
-
-static int giu_remove(struct platform_device *pdev)
-{
- if (giu_base) {
- giu_base = NULL;
- }
-
- return 0;
-}
-
-static struct platform_driver giu_device_driver = {
- .probe = giu_probe,
- .remove = giu_remove,
- .driver = {
- .name = "GIU",
- },
-};
-
-module_platform_driver(giu_device_driver);
--
2.29.2