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author | Olof Johansson <olof@lixom.net> | 2012-10-01 21:23:11 (GMT) |
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committer | Olof Johansson <olof@lixom.net> | 2012-10-01 21:23:11 (GMT) |
commit | 7e95c548818d2b311090848083277fb907cfb56d (patch) | |
tree | 86fecf07ae1f01ba8bac5969974a7915b738baee /arch/arm/mach-vt8500/gpio.c | |
parent | 6d55d5968a8622f3ea20ec40737aea1cfba6438c (diff) | |
parent | 99261fbad0a16f105b262d7525801697588ba526 (diff) | |
download | linux-7e95c548818d2b311090848083277fb907cfb56d.tar.xz |
Merge branch 'next/dt' into HEAD
Conflicts:
Documentation/devicetree/bindings/usb/platform-uhci.txt
arch/arm/mach-vt8500/bv07.c
arch/arm/mach-vt8500/devices-vt8500.c
arch/arm/mach-vt8500/devices-wm8505.c
arch/arm/mach-vt8500/devices.c
arch/arm/mach-vt8500/devices.h
arch/arm/mach-vt8500/wm8505_7in.c
Diffstat (limited to 'arch/arm/mach-vt8500/gpio.c')
-rw-r--r-- | arch/arm/mach-vt8500/gpio.c | 240 |
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 2bcc0ec..0000000 --- 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); -} |