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Diffstat (limited to 'arch/arm/mach-vt8500/gpio.c')
-rw-r--r--arch/arm/mach-vt8500/gpio.c240
1 files changed, 0 insertions, 240 deletions
diff --git a/arch/arm/mach-vt8500/gpio.c b/arch/arm/mach-vt8500/gpio.c
deleted file mode 100644
index 2bcc0ec783d..00000000000
--- a/arch/arm/mach-vt8500/gpio.c
+++ /dev/null
@@ -1,240 +0,0 @@
-/* linux/arch/arm/mach-vt8500/gpio.c
- *
- * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/gpio.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#include "devices.h"
-
-#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip)
-
-#define ENABLE_REGS 0x0
-#define DIRECTION_REGS 0x20
-#define OUTVALUE_REGS 0x40
-#define INVALUE_REGS 0x60
-
-#define EXT_REGOFF 0x1c
-
-static void __iomem *regbase;
-
-struct vt8500_gpio_chip {
- struct gpio_chip chip;
- unsigned int shift;
- unsigned int regoff;
-};
-
-static int gpio_to_irq_map[8];
-
-static int vt8500_muxed_gpio_request(struct gpio_chip *chip,
- unsigned offset)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
- unsigned val = readl(regbase + ENABLE_REGS + vt8500_chip->regoff);
-
- val |= (1 << vt8500_chip->shift << offset);
- writel(val, regbase + ENABLE_REGS + vt8500_chip->regoff);
-
- return 0;
-}
-
-static void vt8500_muxed_gpio_free(struct gpio_chip *chip,
- unsigned offset)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
- unsigned val = readl(regbase + ENABLE_REGS + vt8500_chip->regoff);
-
- val &= ~(1 << vt8500_chip->shift << offset);
- writel(val, regbase + ENABLE_REGS + vt8500_chip->regoff);
-}
-
-static int vt8500_muxed_gpio_direction_input(struct gpio_chip *chip,
- unsigned offset)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
- unsigned val = readl(regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
- val &= ~(1 << vt8500_chip->shift << offset);
- writel(val, regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
- return 0;
-}
-
-static int vt8500_muxed_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
- unsigned val = readl(regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
- val |= (1 << vt8500_chip->shift << offset);
- writel(val, regbase + DIRECTION_REGS + vt8500_chip->regoff);
-
- if (value) {
- val = readl(regbase + OUTVALUE_REGS + vt8500_chip->regoff);
- val |= (1 << vt8500_chip->shift << offset);
- writel(val, regbase + OUTVALUE_REGS + vt8500_chip->regoff);
- }
- return 0;
-}
-
-static int vt8500_muxed_gpio_get_value(struct gpio_chip *chip,
- unsigned offset)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
-
- return (readl(regbase + INVALUE_REGS + vt8500_chip->regoff)
- >> vt8500_chip->shift >> offset) & 1;
-}
-
-static void vt8500_muxed_gpio_set_value(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
- unsigned val = readl(regbase + INVALUE_REGS + vt8500_chip->regoff);
-
- if (value)
- val |= (1 << vt8500_chip->shift << offset);
- else
- val &= ~(1 << vt8500_chip->shift << offset);
-
- writel(val, regbase + INVALUE_REGS + vt8500_chip->regoff);
-}
-
-#define VT8500_GPIO_BANK(__name, __shift, __off, __base, __num) \
-{ \
- .chip = { \
- .label = __name, \
- .request = vt8500_muxed_gpio_request, \
- .free = vt8500_muxed_gpio_free, \
- .direction_input = vt8500_muxed_gpio_direction_input, \
- .direction_output = vt8500_muxed_gpio_direction_output, \
- .get = vt8500_muxed_gpio_get_value, \
- .set = vt8500_muxed_gpio_set_value, \
- .can_sleep = 0, \
- .base = __base, \
- .ngpio = __num, \
- }, \
- .shift = __shift, \
- .regoff = __off, \
-}
-
-static struct vt8500_gpio_chip vt8500_muxed_gpios[] = {
- VT8500_GPIO_BANK("uart0", 0, 0x0, 8, 4),
- VT8500_GPIO_BANK("uart1", 4, 0x0, 12, 4),
- VT8500_GPIO_BANK("spi0", 8, 0x0, 16, 4),
- VT8500_GPIO_BANK("spi1", 12, 0x0, 20, 4),
- VT8500_GPIO_BANK("spi2", 16, 0x0, 24, 4),
- VT8500_GPIO_BANK("pwmout", 24, 0x0, 28, 2),
-
- VT8500_GPIO_BANK("sdmmc", 0, 0x4, 30, 11),
- VT8500_GPIO_BANK("ms", 16, 0x4, 41, 7),
- VT8500_GPIO_BANK("i2c0", 24, 0x4, 48, 2),
- VT8500_GPIO_BANK("i2c1", 26, 0x4, 50, 2),
-
- VT8500_GPIO_BANK("mii", 0, 0x8, 52, 20),
- VT8500_GPIO_BANK("see", 20, 0x8, 72, 4),
- VT8500_GPIO_BANK("ide", 24, 0x8, 76, 7),
-
- VT8500_GPIO_BANK("ccir", 0, 0xc, 83, 19),
-
- VT8500_GPIO_BANK("ts", 8, 0x10, 102, 11),
-
- VT8500_GPIO_BANK("lcd", 0, 0x14, 113, 23),
-};
-
-static int vt8500_gpio_direction_input(struct gpio_chip *chip,
- unsigned offset)
-{
- unsigned val = readl(regbase + DIRECTION_REGS + EXT_REGOFF);
-
- val &= ~(1 << offset);
- writel(val, regbase + DIRECTION_REGS + EXT_REGOFF);
- return 0;
-}
-
-static int vt8500_gpio_direction_output(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- unsigned val = readl(regbase + DIRECTION_REGS + EXT_REGOFF);
-
- val |= (1 << offset);
- writel(val, regbase + DIRECTION_REGS + EXT_REGOFF);
-
- if (value) {
- val = readl(regbase + OUTVALUE_REGS + EXT_REGOFF);
- val |= (1 << offset);
- writel(val, regbase + OUTVALUE_REGS + EXT_REGOFF);
- }
- return 0;
-}
-
-static int vt8500_gpio_get_value(struct gpio_chip *chip,
- unsigned offset)
-{
- return (readl(regbase + INVALUE_REGS + EXT_REGOFF) >> offset) & 1;
-}
-
-static void vt8500_gpio_set_value(struct gpio_chip *chip,
- unsigned offset, int value)
-{
- unsigned val = readl(regbase + OUTVALUE_REGS + EXT_REGOFF);
-
- if (value)
- val |= (1 << offset);
- else
- val &= ~(1 << offset);
-
- writel(val, regbase + OUTVALUE_REGS + EXT_REGOFF);
-}
-
-static int vt8500_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
-{
- if (offset > 7)
- return -EINVAL;
-
- return gpio_to_irq_map[offset];
-}
-
-static struct gpio_chip vt8500_external_gpios = {
- .label = "extgpio",
- .direction_input = vt8500_gpio_direction_input,
- .direction_output = vt8500_gpio_direction_output,
- .get = vt8500_gpio_get_value,
- .set = vt8500_gpio_set_value,
- .to_irq = vt8500_gpio_to_irq,
- .can_sleep = 0,
- .base = 0,
- .ngpio = 8,
-};
-
-void __init vt8500_gpio_init(void)
-{
- int i;
-
- for (i = 0; i < 8; i++)
- gpio_to_irq_map[i] = wmt_gpio_ext_irq[i];
-
- regbase = ioremap(wmt_gpio_base, SZ_64K);
- if (!regbase) {
- printk(KERN_ERR "Failed to map MMIO registers for GPIO\n");
- return;
- }
-
- gpiochip_add(&vt8500_external_gpios);
-
- for (i = 0; i < ARRAY_SIZE(vt8500_muxed_gpios); i++)
- gpiochip_add(&vt8500_muxed_gpios[i].chip);
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 23:13:06 +0000