diff options
Diffstat (limited to 'arch/mips/alchemy')
| -rw-r--r-- | arch/mips/alchemy/Kconfig | 19 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/Makefile | 9 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/gpio.c | 201 | ||||
| -rw-r--r-- | arch/mips/alchemy/common/gpiolib-au1000.c | 130 |
4 files changed, 156 insertions, 203 deletions
diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig index 8128aeb..00b498e 100644 --- a/arch/mips/alchemy/Kconfig +++ b/arch/mips/alchemy/Kconfig @@ -1,3 +1,14 @@ +# au1000-style gpio +config ALCHEMY_GPIO_AU1000 + bool + +# select this in your board config if you don't want to use the gpio +# namespace as documented in the manuals. In this case however you need +# to create the necessary gpio_* functions in your board code/headers! +# see arch/mips/include/asm/mach-au1x00/gpio.h for more information. +config ALCHEMY_GPIO_INDIRECT + def_bool n + choice prompt "Machine type" depends on MACH_ALCHEMY @@ -108,22 +119,27 @@ endchoice config SOC_AU1000 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1100 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1500 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1550 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1200 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1X00 bool @@ -134,4 +150,5 @@ config SOC_AU1X00 select SYS_HAS_CPU_MIPS32_R1 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_APM_EMULATION - select ARCH_REQUIRE_GPIOLIB + select GENERIC_GPIO + select ARCH_WANT_OPTIONAL_GPIOLIB diff --git a/arch/mips/alchemy/common/Makefile b/arch/mips/alchemy/common/Makefile index d50d476..b67fb51 100644 --- a/arch/mips/alchemy/common/Makefile +++ b/arch/mips/alchemy/common/Makefile @@ -7,7 +7,14 @@ obj-y += prom.o irq.o puts.o time.o reset.o \ clocks.o platform.o power.o setup.o \ - sleeper.o dma.o dbdma.o gpio.o + sleeper.o dma.o dbdma.o + +# optional gpiolib support +ifeq ($(CONFIG_ALCHEMY_GPIO_INDIRECT),) + ifeq ($(CONFIG_GPIOLIB),y) + obj-$(CONFIG_ALCHEMY_GPIO_AU1000) += gpiolib-au1000.o + endif +endif obj-$(CONFIG_PCI) += pci.o diff --git a/arch/mips/alchemy/common/gpio.c b/arch/mips/alchemy/common/gpio.c deleted file mode 100644 index 91a9c44..0000000 --- a/arch/mips/alchemy/common/gpio.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Copyright (C) 2007-2009, OpenWrt.org, Florian Fainelli <florian@openwrt.org> - * Architecture specific GPIO support - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Notes : - * au1000 SoC have only one GPIO line : GPIO1 - * others have a second one : GPIO2 - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/types.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> - -#include <asm/mach-au1x00/au1000.h> -#include <asm/gpio.h> - -struct au1000_gpio_chip { - struct gpio_chip chip; - void __iomem *regbase; -}; - -#if !defined(CONFIG_SOC_AU1000) -static int au1000_gpio2_get(struct gpio_chip *chip, unsigned offset) -{ - u32 mask = 1 << offset; - struct au1000_gpio_chip *gpch; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - return readl(gpch->regbase + AU1000_GPIO2_ST) & mask; -} - -static void au1000_gpio2_set(struct gpio_chip *chip, - unsigned offset, int value) -{ - u32 mask = ((GPIO2_OUT_EN_MASK << offset) | (!!value << offset)); - struct au1000_gpio_chip *gpch; - unsigned long flags; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - - local_irq_save(flags); - writel(mask, gpch->regbase + AU1000_GPIO2_OUT); - local_irq_restore(flags); -} - -static int au1000_gpio2_direction_input(struct gpio_chip *chip, unsigned offset) -{ - u32 mask = 1 << offset; - u32 tmp; - struct au1000_gpio_chip *gpch; - unsigned long flags; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - - local_irq_save(flags); - tmp = readl(gpch->regbase + AU1000_GPIO2_DIR); - tmp &= ~mask; - writel(tmp, gpch->regbase + AU1000_GPIO2_DIR); - local_irq_restore(flags); - - return 0; -} - -static int au1000_gpio2_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - u32 mask = 1 << offset; - u32 out_mask = ((GPIO2_OUT_EN_MASK << offset) | (!!value << offset)); - u32 tmp; - struct au1000_gpio_chip *gpch; - unsigned long flags; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - - local_irq_save(flags); - tmp = readl(gpch->regbase + AU1000_GPIO2_DIR); - tmp |= mask; - writel(tmp, gpch->regbase + AU1000_GPIO2_DIR); - writel(out_mask, gpch->regbase + AU1000_GPIO2_OUT); - local_irq_restore(flags); - - return 0; -} -#endif /* !defined(CONFIG_SOC_AU1000) */ - -static int au1000_gpio1_get(struct gpio_chip *chip, unsigned offset) -{ - u32 mask = 1 << offset; - struct au1000_gpio_chip *gpch; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - return readl(gpch->regbase + AU1000_GPIO1_ST) & mask; -} - -static void au1000_gpio1_set(struct gpio_chip *chip, - unsigned offset, int value) -{ - u32 mask = 1 << offset; - u32 reg_offset; - struct au1000_gpio_chip *gpch; - unsigned long flags; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - - if (value) - reg_offset = AU1000_GPIO1_OUT; - else - reg_offset = AU1000_GPIO1_CLR; - - local_irq_save(flags); - writel(mask, gpch->regbase + reg_offset); - local_irq_restore(flags); -} - -static int au1000_gpio1_direction_input(struct gpio_chip *chip, unsigned offset) -{ - u32 mask = 1 << offset; - struct au1000_gpio_chip *gpch; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - writel(mask, gpch->regbase + AU1000_GPIO1_ST); - - return 0; -} - -static int au1000_gpio1_direction_output(struct gpio_chip *chip, - unsigned offset, int value) -{ - u32 mask = 1 << offset; - struct au1000_gpio_chip *gpch; - - gpch = container_of(chip, struct au1000_gpio_chip, chip); - - writel(mask, gpch->regbase + AU1000_GPIO1_TRI_OUT); - au1000_gpio1_set(chip, offset, value); - - return 0; -} - -struct au1000_gpio_chip au1000_gpio_chip[] = { - [0] = { - .regbase = (void __iomem *)SYS_BASE, - .chip = { - .label = "au1000-gpio1", - .direction_input = au1000_gpio1_direction_input, - .direction_output = au1000_gpio1_direction_output, - .get = au1000_gpio1_get, - .set = au1000_gpio1_set, - .base = 0, - .ngpio = 32, - }, - }, -#if !defined(CONFIG_SOC_AU1000) - [1] = { - .regbase = (void __iomem *)GPIO2_BASE, - .chip = { - .label = "au1000-gpio2", - .direction_input = au1000_gpio2_direction_input, - .direction_output = au1000_gpio2_direction_output, - .get = au1000_gpio2_get, - .set = au1000_gpio2_set, - .base = AU1XXX_GPIO_BASE, - .ngpio = 32, - }, - }, -#endif -}; - -static int __init au1000_gpio_init(void) -{ - gpiochip_add(&au1000_gpio_chip[0].chip); -#if !defined(CONFIG_SOC_AU1000) - gpiochip_add(&au1000_gpio_chip[1].chip); -#endif - - return 0; -} -arch_initcall(au1000_gpio_init); - diff --git a/arch/mips/alchemy/common/gpiolib-au1000.c b/arch/mips/alchemy/common/gpiolib-au1000.c new file mode 100644 index 0000000..1bfa91f --- /dev/null +++ b/arch/mips/alchemy/common/gpiolib-au1000.c @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2007-2009, OpenWrt.org, Florian Fainelli <florian@openwrt.org> + * GPIOLIB support for Au1000, Au1500, Au1100, Au1550 and Au12x0. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * Notes : + * au1000 SoC have only one GPIO block : GPIO1 + * Au1100, Au15x0, Au12x0 have a second one : GPIO2 + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-au1x00/gpio.h> + +#if !defined(CONFIG_SOC_AU1000) +static int gpio2_get(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio2_get_value(offset + ALCHEMY_GPIO2_BASE); +} + +static void gpio2_set(struct gpio_chip *chip, unsigned offset, int value) +{ + alchemy_gpio2_set_value(offset + ALCHEMY_GPIO2_BASE, value); +} + +static int gpio2_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio2_direction_input(offset + ALCHEMY_GPIO2_BASE); +} + +static int gpio2_direction_output(struct gpio_chip *chip, unsigned offset, + int value) +{ + return alchemy_gpio2_direction_output(offset + ALCHEMY_GPIO2_BASE, + value); +} + +static int gpio2_to_irq(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio2_to_irq(offset + ALCHEMY_GPIO2_BASE); +} +#endif /* !defined(CONFIG_SOC_AU1000) */ + +static int gpio1_get(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio1_get_value(offset + ALCHEMY_GPIO1_BASE); +} + +static void gpio1_set(struct gpio_chip *chip, + unsigned offset, int value) +{ + alchemy_gpio1_set_value(offset + ALCHEMY_GPIO1_BASE, value); +} + +static int gpio1_direction_input(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio1_direction_input(offset + ALCHEMY_GPIO1_BASE); +} + +static int gpio1_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + return alchemy_gpio1_direction_output(offset + ALCHEMY_GPIO1_BASE, + value); +} + +static int gpio1_to_irq(struct gpio_chip *chip, unsigned offset) +{ + return alchemy_gpio1_to_irq(offset + ALCHEMY_GPIO1_BASE); +} + +struct gpio_chip alchemy_gpio_chip[] = { + [0] = { + .label = "alchemy-gpio1", + .direction_input = gpio1_direction_input, + .direction_output = gpio1_direction_output, + .get = gpio1_get, + .set = gpio1_set, + .to_irq = gpio1_to_irq, + .base = ALCHEMY_GPIO1_BASE, + .ngpio = ALCHEMY_GPIO1_NUM, + }, +#if !defined(CONFIG_SOC_AU1000) + [1] = { + .label = "alchemy-gpio2", + .direction_input = gpio2_direction_input, + .direction_output = gpio2_direction_output, + .get = gpio2_get, + .set = gpio2_set, + .to_irq = gpio2_to_irq, + .base = ALCHEMY_GPIO2_BASE, + .ngpio = ALCHEMY_GPIO2_NUM, + }, +#endif +}; + +static int __init alchemy_gpiolib_init(void) +{ + gpiochip_add(&alchemy_gpio_chip[0]); +#if !defined(CONFIG_SOC_AU1000) + gpiochip_add(&alchemy_gpio_chip[1]); +#endif + + return 0; +} +arch_initcall(alchemy_gpiolib_init); |