diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Makefile | 5 | ||||
| -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 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-au1x00/gpio-au1000.h | 604 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-au1x00/gpio.h | 35 |
7 files changed, 770 insertions, 233 deletions
diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 52a350974496..e5ccc3490d6a 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -183,7 +183,6 @@ load-$(CONFIG_MACH_JAZZ) += 0xffffffff80080000 # Common Alchemy Au1x00 stuff # core-$(CONFIG_SOC_AU1X00) += arch/mips/alchemy/common/ -cflags-$(CONFIG_SOC_AU1X00) += -I$(srctree)/arch/mips/include/asm/mach-au1x00 # # AMD Alchemy Pb1000 eval board @@ -281,6 +280,10 @@ load-$(CONFIG_MIPS_MTX1) += 0xffffffff80100000 libs-$(CONFIG_MIPS_XXS1500) += arch/mips/alchemy/xxs1500/ load-$(CONFIG_MIPS_XXS1500) += 0xffffffff80100000 +# must be last for Alchemy systems for GPIO to work properly +cflags-$(CONFIG_SOC_AU1X00) += -I$(srctree)/arch/mips/include/asm/mach-au1x00 + + # # Cobalt Server # diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig index 8128aebfb155..00b498e97c83 100644 --- a/arch/mips/alchemy/Kconfig +++ b/arch/mips/alchemy/Kconfig @@ -1,3 +1,14 @@ +# au1000-style gpio +config ALCHEMY_GPIO_AU1000 + bool + +# select this in your board config if you don't want to use the gpio +# namespace as documented in the manuals. In this case however you need +# to create the necessary gpio_* functions in your board code/headers! +# see arch/mips/include/asm/mach-au1x00/gpio.h for more information. +config ALCHEMY_GPIO_INDIRECT + def_bool n + choice prompt "Machine type" depends on MACH_ALCHEMY @@ -108,22 +119,27 @@ endchoice config SOC_AU1000 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1100 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1500 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1550 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1200 bool select SOC_AU1X00 + select ALCHEMY_GPIO_AU1000 config SOC_AU1X00 bool @@ -134,4 +150,5 @@ config SOC_AU1X00 select SYS_HAS_CPU_MIPS32_R1 select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_APM_EMULATION - select ARCH_REQUIRE_GPIOLIB + select GENERIC_GPIO + select ARCH_WANT_OPTIONAL_GPIOLIB diff --git a/arch/mips/alchemy/common/Makefile b/arch/mips/alchemy/common/Makefile index d50d4764eafe..b67fb512529d 100644 --- a/arch/mips/alchemy/common/Makefile +++ b/arch/mips/alchemy/common/Makefile @@ -7,7 +7,14 @@ obj-y += prom.o irq.o puts.o time.o reset.o \ clocks.o platform.o power.o setup.o \ - sleeper.o dma.o dbdma.o gpio.o + sleeper.o dma.o dbdma.o + +# optional gpiolib support +ifeq ($(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 91a9c4436c39..000000000000 --- 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 000000000000..1bfa91f939f4 --- /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); diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h new file mode 100644 index 000000000000..127d4ed9f073 --- /dev/null +++ b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h @@ -0,0 +1,604 @@ +/* + * GPIO functions for Au1000, Au1500, Au1100, Au1550, Au1200 + * + * Copyright (c) 2009 Manuel Lauss. + * + * Licensed under the terms outlined in the file COPYING. + */ + +#ifndef _ALCHEMY_GPIO_AU1000_H_ +#define _ALCHEMY_GPIO_AU1000_H_ + +#include <asm/mach-au1x00/au1000.h> + +/* The default GPIO numberspace as documented in the Alchemy manuals. + * GPIO0-31 from GPIO1 block, GPIO200-215 from GPIO2 block. + */ +#define ALCHEMY_GPIO1_BASE 0 +#define ALCHEMY_GPIO2_BASE 200 + +#define ALCHEMY_GPIO1_NUM 32 +#define ALCHEMY_GPIO2_NUM 16 +#define ALCHEMY_GPIO1_MAX (ALCHEMY_GPIO1_BASE + ALCHEMY_GPIO1_NUM - 1) +#define ALCHEMY_GPIO2_MAX (ALCHEMY_GPIO2_BASE + ALCHEMY_GPIO2_NUM - 1) + +#define MAKE_IRQ(intc, off) (AU1000_INTC##intc##_INT_BASE + (off)) + + +static inline int au1000_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1000_gpio2_to_irq(int gpio) +{ + return -ENXIO; +} + +#ifdef CONFIG_SOC_AU1000 +static inline int au1000_irq_to_gpio(int irq) +{ + if ((irq >= AU1000_GPIO_0) && (irq <= AU1000_GPIO_31)) + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO_0) + 0; + + return -ENXIO; +} +#endif + +static inline int au1500_gpio1_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO1_BASE; + + switch (gpio) { + case 0 ... 15: + case 20: + case 23 ... 28: return MAKE_IRQ(1, gpio); + } + + return -ENXIO; +} + +static inline int au1500_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0 ... 3: return MAKE_IRQ(1, 16 + gpio - 0); + case 4 ... 5: return MAKE_IRQ(1, 21 + gpio - 4); + case 6 ... 7: return MAKE_IRQ(1, 29 + gpio - 6); + } + + return -ENXIO; +} + +#ifdef CONFIG_SOC_AU1500 +static inline int au1500_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1000_GPIO_0 ... AU1000_GPIO_15: + case AU1500_GPIO_20: + case AU1500_GPIO_23 ... AU1500_GPIO_28: + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO_0) + 0; + case AU1500_GPIO_200 ... AU1500_GPIO_203: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO_200) + 0; + case AU1500_GPIO_204 ... AU1500_GPIO_205: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO_204) + 4; + case AU1500_GPIO_206 ... AU1500_GPIO_207: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO_206) + 6; + case AU1500_GPIO_208_215: + return ALCHEMY_GPIO2_BASE + 8; + } + + return -ENXIO; +} +#endif + +static inline int au1100_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1100_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + if ((gpio >= 8) && (gpio <= 15)) + return MAKE_IRQ(0, 29); /* shared GPIO208_215 */ +} + +#ifdef CONFIG_SOC_AU1100 +static inline int au1100_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1000_GPIO_0 ... AU1000_GPIO_31: + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO_0) + 0; + case AU1100_GPIO_208_215: + return ALCHEMY_GPIO2_BASE + 8; + } + + return -ENXIO; +} +#endif + +static inline int au1550_gpio1_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO1_BASE; + + switch (gpio) { + case 0 ... 15: + case 20 ... 28: return MAKE_IRQ(1, gpio); + case 16 ... 17: return MAKE_IRQ(1, 18 + gpio - 16); + } + + return -ENXIO; +} + +static inline int au1550_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0: return MAKE_IRQ(1, 16); + case 1 ... 5: return MAKE_IRQ(1, 17); /* shared GPIO201_205 */ + case 6 ... 7: return MAKE_IRQ(1, 29 + gpio - 6); + case 8 ... 15: return MAKE_IRQ(1, 31); /* shared GPIO208_215 */ + } + + return -ENXIO; +} + +#ifdef CONFIG_SOC_AU1550 +static inline int au1550_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1000_GPIO_0 ... AU1000_GPIO_15: + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO_0) + 0; + case AU1550_GPIO_200: + case AU1500_GPIO_201_205: + return ALCHEMY_GPIO2_BASE + (irq - AU1550_GPIO_200) + 0; + case AU1500_GPIO_16 ... AU1500_GPIO_28: + return ALCHEMY_GPIO1_BASE + (irq - AU1500_GPIO_16) + 16; + case AU1500_GPIO_206 ... AU1500_GPIO_208_218: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO_206) + 6; + } + + return -ENXIO; +} +#endif + +static inline int au1200_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1200_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0 ... 2: return MAKE_IRQ(0, 5 + gpio - 0); + case 3: return MAKE_IRQ(0, 22); + case 4 ... 7: return MAKE_IRQ(0, 24 + gpio - 4); + case 8 ... 15: return MAKE_IRQ(0, 28); /* shared GPIO208_215 */ + } + + return -ENXIO; +} + +#ifdef CONFIG_SOC_AU1200 +static inline int au1200_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1000_GPIO_0 ... AU1000_GPIO_31: + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO_0) + 0; + case AU1200_GPIO_200 ... AU1200_GPIO_202: + return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO_200) + 0; + case AU1200_GPIO_203: + return ALCHEMY_GPIO2_BASE + 3; + case AU1200_GPIO_204 ... AU1200_GPIO_208_215: + return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO_204) + 4; + } + + return -ENXIO; +} +#endif + +/* + * GPIO1 block macros for common linux gpio functions. + */ +static inline void alchemy_gpio1_set_value(int gpio, int v) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + unsigned long r = v ? SYS_OUTPUTSET : SYS_OUTPUTCLR; + au_writel(mask, r); + au_sync(); +} + +static inline int alchemy_gpio1_get_value(int gpio) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + return au_readl(SYS_PINSTATERD) & mask; +} + +static inline int alchemy_gpio1_direction_input(int gpio) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + au_writel(mask, SYS_TRIOUTCLR); + au_sync(); + return 0; +} + +static inline int alchemy_gpio1_direction_output(int gpio, int v) +{ + /* hardware switches to "output" mode when one of the two + * "set_value" registers is accessed. + */ + alchemy_gpio1_set_value(gpio, v); + return 0; +} + +static inline int alchemy_gpio1_is_valid(int gpio) +{ + return ((gpio >= ALCHEMY_GPIO1_BASE) && (gpio <= ALCHEMY_GPIO1_MAX)); +} + +static inline int alchemy_gpio1_to_irq(int gpio) +{ +#if defined(CONFIG_SOC_AU1000) + return au1000_gpio1_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1100) + return au1100_gpio1_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1500) + return au1500_gpio1_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1550) + return au1550_gpio1_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1200) + return au1200_gpio1_to_irq(gpio); +#else + return -ENXIO; +#endif +} + +/* + * GPIO2 block macros for common linux GPIO functions. The 'gpio' + * parameter must be in range of ALCHEMY_GPIO2_BASE..ALCHEMY_GPIO2_MAX. + */ +static inline void __alchemy_gpio2_mod_dir(int gpio, int to_out) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO2_BASE); + unsigned long d = au_readl(GPIO2_DIR); + if (to_out) + d |= mask; + else + d &= ~mask; + au_writel(d, GPIO2_DIR); + au_sync(); +} + +static inline void alchemy_gpio2_set_value(int gpio, int v) +{ + unsigned long mask; + mask = ((v) ? 0x00010001 : 0x00010000) << (gpio - ALCHEMY_GPIO2_BASE); + au_writel(mask, GPIO2_OUTPUT); + au_sync(); +} + +static inline int alchemy_gpio2_get_value(int gpio) +{ + return au_readl(GPIO2_PINSTATE) & (1 << (gpio - ALCHEMY_GPIO2_BASE)); +} + +static inline int alchemy_gpio2_direction_input(int gpio) +{ + unsigned long flags; + local_irq_save(flags); + __alchemy_gpio2_mod_dir(gpio, 0); + local_irq_restore(flags); + return 0; +} + +static inline int alchemy_gpio2_direction_output(int gpio, int v) +{ + unsigned long flags; + alchemy_gpio2_set_value(gpio, v); + local_irq_save(flags); + __alchemy_gpio2_mod_dir(gpio, 1); + local_irq_restore(flags); + return 0; +} + +static inline int alchemy_gpio2_is_valid(int gpio) +{ + return ((gpio >= ALCHEMY_GPIO2_BASE) && (gpio <= ALCHEMY_GPIO2_MAX)); +} + +static inline int alchemy_gpio2_to_irq(int gpio) +{ +#if defined(CONFIG_SOC_AU1000) + return au1000_gpio2_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1100) + return au1100_gpio2_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1500) + return au1500_gpio2_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1550) + return au1550_gpio2_to_irq(gpio); +#elif defined(CONFIG_SOC_AU1200) + return au1200_gpio2_to_irq(gpio); +#else + return -ENXIO; +#endif +} + +/**********************************************************************/ + +/* On Au1000, Au1500 and Au1100 GPIOs won't work as inputs before + * SYS_PININPUTEN is written to at least once. On Au1550/Au1200 this + * register enables use of GPIOs as wake source. + */ +static inline void alchemy_gpio1_input_enable(void) +{ + au_writel(0, SYS_PININPUTEN); /* the write op is key */ + au_sync(); +} + +/* GPIO2 shared interrupts and control */ + +static inline void __alchemy_gpio2_mod_int(int gpio2, int en) +{ + unsigned long r = au_readl(GPIO2_INTENABLE); + if (en) + r |= 1 << gpio2; + else + r &= ~(1 << gpio2); + au_writel(r, GPIO2_INTENABLE); + au_sync(); +} + +/** + * alchemy_gpio2_enable_int - Enable a GPIO2 pins' shared irq contribution. + * @gpio2: The GPIO2 pin to activate (200...215). + * + * GPIO208-215 have one shared interrupt line to the INTC. They are + * and'ed with a per-pin enable bit and finally or'ed together to form + * a single irq request (useful for active-high sources). + * With this function, a pins' individual contribution to the int request + * can be enabled. As with all other GPIO-based interrupts, the INTC + * must be programmed to accept the GPIO208_215 interrupt as well. + * + * NOTE: Calling this macro is only necessary for GPIO208-215; all other + * GPIO2-based interrupts have their own request to the INTC. Please + * consult your Alchemy databook for more information! + * + * NOTE: On the Au1550, GPIOs 201-205 also have a shared interrupt request + * line to the INTC, GPIO201_205. This function can be used for those + * as well. + * + * NOTE: 'gpio2' parameter must be in range of the GPIO2 numberspace + * (200-215 by default). No sanity checks are made, + */ +static inline void alchemy_gpio2_enable_int(int gpio2) +{ + unsigned long flags; + + gpio2 -= ALCHEMY_GPIO2_BASE; + +#if defined(CONFIG_SOC_AU1100) || defined(CONFIG_SOC_AU1500) + /* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */ + gpio2 -= 8; +#endif + local_irq_save(flags); + __alchemy_gpio2_mod_int(gpio2, 1); + local_irq_restore(flags); +} + +/** + * alchemy_gpio2_disable_int - Disable a GPIO2 pins' shared irq contribution. + * @gpio2: The GPIO2 pin to activate (200...215). + * + * see function alchemy_gpio2_enable_int() for more information. + */ +static inline void alchemy_gpio2_disable_int(int gpio2) +{ + unsigned long flags; + + gpio2 -= ALCHEMY_GPIO2_BASE; + +#if defined(CONFIG_SOC_AU1100) || defined(CONFIG_SOC_AU1500) + /* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */ + gpio2 -= 8; +#endif + local_irq_save(flags); + __alchemy_gpio2_mod_int(gpio2, 0); + local_irq_restore(flags); +} + +/** + * alchemy_gpio2_enable - Activate GPIO2 block. + * + * The GPIO2 block must be enabled excplicitly to work. On systems + * where this isn't done by the bootloader, this macro can be used. + */ +static inline void alchemy_gpio2_enable(void) +{ + au_writel(3, GPIO2_ENABLE); /* reset, clock enabled */ + au_sync(); + au_writel(1, GPIO2_ENABLE); /* clock enabled */ + au_sync(); +} + +/** + * alchemy_gpio2_disable - disable GPIO2 block. + * + * Disable and put GPIO2 block in low-power mode. + */ +static inline void alchemy_gpio2_disable(void) +{ + au_writel(2, GPIO2_ENABLE); /* reset, clock disabled */ + au_sync(); +} + +/**********************************************************************/ + +/* wrappers for on-chip gpios; can be used before gpio chips have been + * registered with gpiolib. + */ +static inline int alchemy_gpio_direction_input(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_direction_input(gpio) : + alchemy_gpio1_direction_input(gpio); +} + +static inline int alchemy_gpio_direction_output(int gpio, int v) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_direction_output(gpio, v) : + alchemy_gpio1_direction_output(gpio, v); +} + +static inline int alchemy_gpio_get_value(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_get_value(gpio) : + alchemy_gpio1_get_value(gpio); +} + +static inline void alchemy_gpio_set_value(int gpio, int v) +{ + if (gpio >= ALCHEMY_GPIO2_BASE) + alchemy_gpio2_set_value(gpio, v); + else + alchemy_gpio1_set_value(gpio, v); +} + +static inline int alchemy_gpio_is_valid(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_is_valid(gpio) : + alchemy_gpio1_is_valid(gpio); +} + +static inline int alchemy_gpio_cansleep(int gpio) +{ + return 0; /* Alchemy never gets tired */ +} + +static inline int alchemy_gpio_to_irq(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_to_irq(gpio) : + alchemy_gpio1_to_irq(gpio); +} + +static inline int alchemy_irq_to_gpio(int irq) +{ +#if defined(CONFIG_SOC_AU1000) + return au1000_irq_to_gpio(irq); +#elif defined(CONFIG_SOC_AU1100) + return au1100_irq_to_gpio(irq); +#elif defined(CONFIG_SOC_AU1500) + return au1500_irq_to_gpio(irq); +#elif defined(CONFIG_SOC_AU1550) + return au1550_irq_to_gpio(irq); +#elif defined(CONFIG_SOC_AU1200) + return au1200_irq_to_gpio(irq); +#else + return -ENXIO; +#endif +} + +/**********************************************************************/ + +/* Linux gpio framework integration. + * + * 4 use cases of Au1000-Au1200 GPIOS: + *(1) GPIOLIB=y, ALCHEMY_GPIO_INDIRECT=y: + * Board must register gpiochips. + *(2) GPIOLIB=y, ALCHEMY_GPIO_INDIRECT=n: + * 2 (1 for Au1000) gpio_chips are registered. + * + *(3) GPIOLIB=n, ALCHEMY_GPIO_INDIRECT=y: + * the boards' gpio.h must provide the linux gpio wrapper functions, + * + *(4) GPIOLIB=n, ALCHEMY_GPIO_INDIRECT=n: + * inlinable gpio functions are provided which enable access to the + * Au1000 gpios only by using the numbers straight out of the data- + * sheets. + + * Cases 1 and 3 are intended for boards which want to provide their own + * GPIO namespace and -operations (i.e. for example you have 8 GPIOs + * which are in part provided by spare Au1000 GPIO pins and in part by + * an external FPGA but you still want them to be accssible in linux + * as gpio0-7. The board can of course use the alchemy_gpioX_* functions + * as required). + */ + +#ifndef CONFIG_GPIOLIB + + +#ifndef CONFIG_ALCHEMY_GPIO_INDIRECT /* case (4) */ + +static inline int gpio_direction_input(int gpio) +{ + return alchemy_gpio_direction_input(gpio); +} + +static inline int gpio_direction_output(int gpio, int v) +{ + return alchemy_gpio_direction_output(gpio, v); +} + +static inline int gpio_get_value(int gpio) +{ + return alchemy_gpio_get_value(gpio); +} + +static inline void gpio_set_value(int gpio, int v) +{ + alchemy_gpio_set_value(gpio, v); +} + +static inline int gpio_is_valid(int gpio) +{ + return alchemy_gpio_is_valid(gpio); +} + +static inline int gpio_cansleep(int gpio) +{ + return alchemy_gpio_cansleep(gpio); +} + +static inline int gpio_to_irq(int gpio) +{ + return alchemy_gpio_to_irq(gpio); +} + +static inline int irq_to_gpio(int irq) +{ + return alchemy_irq_to_gpio(irq); +} + +#endif /* !CONFIG_ALCHEMY_GPIO_INDIRECT */ + + +#else /* CONFIG GPIOLIB */ + + + /* using gpiolib to provide up to 2 gpio_chips for on-chip gpios */ +#ifndef CONFIG_ALCHEMY_GPIO_INDIRECT /* case (2) */ + +/* get everything through gpiolib */ +#define gpio_to_irq __gpio_to_irq +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value +#define gpio_cansleep __gpio_cansleep +#define irq_to_gpio alchemy_irq_to_gpio + +#include <asm-generic/gpio.h> + +#endif /* !CONFIG_ALCHEMY_GPIO_INDIRECT */ + + +#endif /* !CONFIG_GPIOLIB */ + +#endif /* _ALCHEMY_GPIO_AU1000_H_ */ diff --git a/arch/mips/include/asm/mach-au1x00/gpio.h b/arch/mips/include/asm/mach-au1x00/gpio.h index 34d9b7279024..f9b7d41c659a 100644 --- a/arch/mips/include/asm/mach-au1x00/gpio.h +++ b/arch/mips/include/asm/mach-au1x00/gpio.h @@ -1,33 +1,10 @@ -#ifndef _AU1XXX_GPIO_H_ -#define _AU1XXX_GPIO_H_ +#ifndef _ALCHEMY_GPIO_H_ +#define _ALCHEMY_GPIO_H_ -#include <linux/types.h> +#if defined(CONFIG_ALCHEMY_GPIO_AU1000) -#define AU1XXX_GPIO_BASE 200 +#include <asm/mach-au1x00/gpio-au1000.h> -/* GPIO bank 1 offsets */ -#define AU1000_GPIO1_TRI_OUT 0x0100 -#define AU1000_GPIO1_OUT 0x0108 -#define AU1000_GPIO1_ST 0x0110 -#define AU1000_GPIO1_CLR 0x010C +#endif -/* GPIO bank 2 offsets */ -#define AU1000_GPIO2_DIR 0x00 -#define AU1000_GPIO2_RSVD 0x04 -#define AU1000_GPIO2_OUT 0x08 -#define AU1000_GPIO2_ST 0x0C -#define AU1000_GPIO2_INT 0x10 -#define AU1000_GPIO2_EN 0x14 - -#define GPIO2_OUT_EN_MASK 0x00010000 - -#define gpio_to_irq(gpio) NULL - -#define gpio_get_value __gpio_get_value -#define gpio_set_value __gpio_set_value - -#define gpio_cansleep __gpio_cansleep - -#include <asm-generic/gpio.h> - -#endif /* _AU1XXX_GPIO_H_ */ +#endif /* _ALCHEMY_GPIO_H_ */ |