+++ /dev/null
-/*
- * 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);
-
--- /dev/null
+/*
+ * 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);
--- /dev/null
+/*
+ * 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_ */
projects / mirror_ubuntu-artful-kernel.git / commitdiff