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-rw-r--r--drivers/gpio/Kconfig8
-rw-r--r--drivers/gpio/Makefile1
-rw-r--r--drivers/gpio/gpio-em.c4
-rw-r--r--drivers/gpio/gpio-lpc32xx.c5
-rw-r--r--drivers/gpio/gpio-mpc8xxx.c2
-rw-r--r--drivers/gpio/gpio-omap.c23
-rw-r--r--drivers/gpio/gpio-pxa.c77
-rw-r--r--drivers/gpio/gpio-rdc321x.c1
-rw-r--r--drivers/gpio/gpio-samsung.c103
-rw-r--r--drivers/gpio/gpio-tegra.c3
-rw-r--r--drivers/gpio/gpio-twl4030.c90
-rw-r--r--drivers/gpio/gpio-vt8500.c316
-rw-r--r--drivers/gpio/gpiolib-of.c2
13 files changed, 493 insertions, 142 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b16c8a72a2e2..a00b828b1643 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -183,6 +183,12 @@ config GPIO_STA2X11
Say yes here to support the STA2x11/ConneXt GPIO device.
The GPIO module has 128 GPIO pins with alternate functions.
+config GPIO_VT8500
+ bool "VIA/Wondermedia SoC GPIO Support"
+ depends on ARCH_VT8500
+ help
+ Say yes here to support the VT8500/WM8505/WM8650 GPIO controller.
+
config GPIO_XILINX
bool "Xilinx GPIO support"
depends on PPC_OF || MICROBLAZE
@@ -294,7 +300,7 @@ config GPIO_MAX732X_IRQ
config GPIO_MC9S08DZ60
bool "MX35 3DS BOARD MC9S08DZ60 GPIO functions"
- depends on I2C && MACH_MX35_3DS
+ depends on I2C=y && MACH_MX35_3DS
help
Select this to enable the MC9S08DZ60 GPIO driver
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 153caceeb053..a288142ad998 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -69,6 +69,7 @@ obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o
obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o
obj-$(CONFIG_GPIO_UCB1400) += gpio-ucb1400.o
obj-$(CONFIG_GPIO_VR41XX) += gpio-vr41xx.o
+obj-$(CONFIG_GPIO_VT8500) += gpio-vt8500.o
obj-$(CONFIG_GPIO_VX855) += gpio-vx855.o
obj-$(CONFIG_GPIO_WM831X) += gpio-wm831x.o
obj-$(CONFIG_GPIO_WM8350) += gpio-wm8350.o
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index ae37181798b3..ec48ed512628 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -247,9 +247,9 @@ static int __devinit em_gio_irq_domain_init(struct em_gio_priv *p)
p->irq_base = irq_alloc_descs(pdata->irq_base, 0,
pdata->number_of_pins, numa_node_id());
- if (IS_ERR_VALUE(p->irq_base)) {
+ if (p->irq_base < 0) {
dev_err(&pdev->dev, "cannot get irq_desc\n");
- return -ENXIO;
+ return p->irq_base;
}
pr_debug("gio: hw base = %d, nr = %d, sw base = %d\n",
pdata->gpio_base, pdata->number_of_pins, p->irq_base);
diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c
index 8a420f13905e..ed94b4ea72e9 100644
--- a/drivers/gpio/gpio-lpc32xx.c
+++ b/drivers/gpio/gpio-lpc32xx.c
@@ -308,6 +308,7 @@ static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ __set_gpio_level_p012(group, pin, value);
__set_gpio_dir_p012(group, pin, 0);
return 0;
@@ -318,6 +319,7 @@ static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
{
struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+ __set_gpio_level_p3(group, pin, value);
__set_gpio_dir_p3(group, pin, 0);
return 0;
@@ -326,6 +328,9 @@ static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin,
int value)
{
+ struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
+
+ __set_gpo_level_p3(group, pin, value);
return 0;
}
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c
index 5a1817eedd1b..9ae29cc0d17f 100644
--- a/drivers/gpio/gpio-mpc8xxx.c
+++ b/drivers/gpio/gpio-mpc8xxx.c
@@ -38,7 +38,7 @@ struct mpc8xxx_gpio_chip {
*/
u32 data;
struct irq_domain *irq;
- void *of_dev_id_data;
+ const void *of_dev_id_data;
};
static inline u32 mpc8xxx_gpio2mask(unsigned int gpio)
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index e6efd77668f0..94cbc842fbc3 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -25,11 +25,9 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/irqdomain.h>
+#include <linux/gpio.h>
+#include <linux/platform_data/gpio-omap.h>
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <mach/irqs.h>
-#include <asm/gpio.h>
#include <asm/mach/irq.h>
#define OFF_MODE 1
@@ -385,13 +383,16 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
static int gpio_irq_type(struct irq_data *d, unsigned type)
{
struct gpio_bank *bank = irq_data_get_irq_chip_data(d);
- unsigned gpio;
+ unsigned gpio = 0;
int retval;
unsigned long flags;
- if (!cpu_class_is_omap2() && d->irq > IH_MPUIO_BASE)
+#ifdef CONFIG_ARCH_OMAP1
+ if (d->irq > IH_MPUIO_BASE)
gpio = OMAP_MPUIO(d->irq - IH_MPUIO_BASE);
- else
+#endif
+
+ if (!gpio)
gpio = irq_to_gpio(bank, d->irq);
if (type & ~IRQ_TYPE_SENSE_MASK)
@@ -1058,7 +1059,7 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
const struct of_device_id *match;
- struct omap_gpio_platform_data *pdata;
+ const struct omap_gpio_platform_data *pdata;
struct resource *res;
struct gpio_bank *bank;
int ret = 0;
@@ -1440,19 +1441,19 @@ static struct omap_gpio_reg_offs omap4_gpio_regs = {
.fallingdetect = OMAP4_GPIO_FALLINGDETECT,
};
-static struct omap_gpio_platform_data omap2_pdata = {
+const static struct omap_gpio_platform_data omap2_pdata = {
.regs = &omap2_gpio_regs,
.bank_width = 32,
.dbck_flag = false,
};
-static struct omap_gpio_platform_data omap3_pdata = {
+const static struct omap_gpio_platform_data omap3_pdata = {
.regs = &omap2_gpio_regs,
.bank_width = 32,
.dbck_flag = true,
};
-static struct omap_gpio_platform_data omap4_pdata = {
+const static struct omap_gpio_platform_data omap4_pdata = {
.regs = &omap4_gpio_regs,
.bank_width = 32,
.dbck_flag = true,
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 9cac88a65f78..9528779ca463 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -26,6 +26,8 @@
#include <linux/syscore_ops.h>
#include <linux/slab.h>
+#include <asm/mach/irq.h>
+
#include <mach/irqs.h>
/*
@@ -59,6 +61,7 @@
#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
int pxa_last_gpio;
+static int irq_base;
#ifdef CONFIG_OF
static struct irq_domain *domain;
@@ -167,63 +170,14 @@ static inline int __gpio_is_occupied(unsigned gpio)
return ret;
}
-#ifdef CONFIG_ARCH_PXA
-static inline int __pxa_gpio_to_irq(int gpio)
-{
- if (gpio_is_pxa_type(gpio_type))
- return PXA_GPIO_TO_IRQ(gpio);
- return -1;
-}
-
-static inline int __pxa_irq_to_gpio(int irq)
-{
- if (gpio_is_pxa_type(gpio_type))
- return irq - PXA_GPIO_TO_IRQ(0);
- return -1;
-}
-#else
-static inline int __pxa_gpio_to_irq(int gpio) { return -1; }
-static inline int __pxa_irq_to_gpio(int irq) { return -1; }
-#endif
-
-#ifdef CONFIG_ARCH_MMP
-static inline int __mmp_gpio_to_irq(int gpio)
-{
- if (gpio_is_mmp_type(gpio_type))
- return MMP_GPIO_TO_IRQ(gpio);
- return -1;
-}
-
-static inline int __mmp_irq_to_gpio(int irq)
-{
- if (gpio_is_mmp_type(gpio_type))
- return irq - MMP_GPIO_TO_IRQ(0);
- return -1;
-}
-#else
-static inline int __mmp_gpio_to_irq(int gpio) { return -1; }
-static inline int __mmp_irq_to_gpio(int irq) { return -1; }
-#endif
-
static int pxa_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
- int gpio, ret;
-
- gpio = chip->base + offset;
- ret = __pxa_gpio_to_irq(gpio);
- if (ret >= 0)
- return ret;
- return __mmp_gpio_to_irq(gpio);
+ return chip->base + offset + irq_base;
}
int pxa_irq_to_gpio(int irq)
{
- int ret;
-
- ret = __pxa_irq_to_gpio(irq);
- if (ret >= 0)
- return ret;
- return __mmp_irq_to_gpio(irq);
+ return irq - irq_base;
}
static int pxa_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
@@ -403,6 +357,9 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
struct pxa_gpio_chip *c;
int loop, gpio, gpio_base, n;
unsigned long gedr;
+ struct irq_chip *chip = irq_desc_get_chip(desc);
+
+ chained_irq_enter(chip, desc);
do {
loop = 0;
@@ -422,6 +379,8 @@ static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
}
}
} while (loop);
+
+ chained_irq_exit(chip, desc);
}
static void pxa_ack_muxed_gpio(struct irq_data *d)
@@ -535,7 +494,7 @@ const struct irq_domain_ops pxa_irq_domain_ops = {
static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev)
{
- int ret, nr_banks, nr_gpios, irq_base;
+ int ret, nr_banks, nr_gpios;
struct device_node *prev, *next, *np = pdev->dev.of_node;
const struct of_device_id *of_id =
of_match_device(pxa_gpio_dt_ids, &pdev->dev);
@@ -590,10 +549,20 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
ret = pxa_gpio_probe_dt(pdev);
- if (ret < 0)
+ if (ret < 0) {
pxa_last_gpio = pxa_gpio_nums();
- else
+#ifdef CONFIG_ARCH_PXA
+ if (gpio_is_pxa_type(gpio_type))
+ irq_base = PXA_GPIO_TO_IRQ(0);
+#endif
+#ifdef CONFIG_ARCH_MMP
+ if (gpio_is_mmp_type(gpio_type))
+ irq_base = MMP_GPIO_TO_IRQ(0);
+#endif
+ } else {
use_of = 1;
+ }
+
if (!pxa_last_gpio)
return -EINVAL;
diff --git a/drivers/gpio/gpio-rdc321x.c b/drivers/gpio/gpio-rdc321x.c
index e97016af6443..b62d443e9a59 100644
--- a/drivers/gpio/gpio-rdc321x.c
+++ b/drivers/gpio/gpio-rdc321x.c
@@ -170,6 +170,7 @@ static int __devinit rdc321x_gpio_probe(struct platform_device *pdev)
rdc321x_gpio_dev->reg2_data_base = r->start + 0x4;
rdc321x_gpio_dev->chip.label = "rdc321x-gpio";
+ rdc321x_gpio_dev->chip.owner = THIS_MODULE;
rdc321x_gpio_dev->chip.direction_input = rdc_gpio_direction_input;
rdc321x_gpio_dev->chip.direction_output = rdc_gpio_config;
rdc321x_gpio_dev->chip.get = rdc_gpio_get_value;
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index ba126cc04073..8af4b06e80f7 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -938,6 +938,67 @@ static void __init samsung_gpiolib_add(struct samsung_gpio_chip *chip)
s3c_gpiolib_track(chip);
}
+#if defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF)
+static int s3c24xx_gpio_xlate(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec, u32 *flags)
+{
+ unsigned int pin;
+
+ if (WARN_ON(gc->of_gpio_n_cells < 3))
+ return -EINVAL;
+
+ if (WARN_ON(gpiospec->args_count < gc->of_gpio_n_cells))
+ return -EINVAL;
+
+ if (gpiospec->args[0] > gc->ngpio)
+ return -EINVAL;
+
+ pin = gc->base + gpiospec->args[0];
+
+ if (s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(gpiospec->args[1])))
+ pr_warn("gpio_xlate: failed to set pin function\n");
+ if (s3c_gpio_setpull(pin, gpiospec->args[2] & 0xffff))
+ pr_warn("gpio_xlate: failed to set pin pull up/down\n");
+
+ if (flags)
+ *flags = gpiospec->args[2] >> 16;
+
+ return gpiospec->args[0];
+}
+
+static const struct of_device_id s3c24xx_gpio_dt_match[] __initdata = {
+ { .compatible = "samsung,s3c24xx-gpio", },
+ {}
+};
+
+static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
+ u64 base, u64 offset)
+{
+ struct gpio_chip *gc = &chip->chip;
+ u64 address;
+
+ if (!of_have_populated_dt())
+ return;
+
+ address = chip->base ? base + ((u32)chip->base & 0xfff) : base + offset;
+ gc->of_node = of_find_matching_node_by_address(NULL,
+ s3c24xx_gpio_dt_match, address);
+ if (!gc->of_node) {
+ pr_info("gpio: device tree node not found for gpio controller"
+ " with base address %08llx\n", address);
+ return;
+ }
+ gc->of_gpio_n_cells = 3;
+ gc->of_xlate = s3c24xx_gpio_xlate;
+}
+#else
+static __init void s3c24xx_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
+ u64 base, u64 offset)
+{
+ return;
+}
+#endif /* defined(CONFIG_PLAT_S3C24XX) && defined(CONFIG_OF) */
+
static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
int nr_chips, void __iomem *base)
{
@@ -962,6 +1023,8 @@ static void __init s3c24xx_gpiolib_add_chips(struct samsung_gpio_chip *chip,
gc->direction_output = samsung_gpiolib_2bit_output;
samsung_gpiolib_add(chip);
+
+ s3c24xx_gpiolib_attach_ofnode(chip, S3C24XX_PA_GPIO, i * 0x10);
}
}
@@ -3131,46 +3194,6 @@ samsung_gpio_pull_t s3c_gpio_getpull(unsigned int pin)
}
EXPORT_SYMBOL(s3c_gpio_getpull);
-/* gpiolib wrappers until these are totally eliminated */
-
-void s3c2410_gpio_pullup(unsigned int pin, unsigned int to)
-{
- int ret;
-
- WARN_ON(to); /* should be none of these left */
-
- if (!to) {
- /* if pull is enabled, try first with up, and if that
- * fails, try using down */
-
- ret = s3c_gpio_setpull(pin, S3C_GPIO_PULL_UP);
- if (ret)
- s3c_gpio_setpull(pin, S3C_GPIO_PULL_DOWN);
- } else {
- s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE);
- }
-}
-EXPORT_SYMBOL(s3c2410_gpio_pullup);
-
-void s3c2410_gpio_setpin(unsigned int pin, unsigned int to)
-{
- /* do this via gpiolib until all users removed */
-
- gpio_request(pin, "temporary");
- gpio_set_value(pin, to);
- gpio_free(pin);
-}
-EXPORT_SYMBOL(s3c2410_gpio_setpin);
-
-unsigned int s3c2410_gpio_getpin(unsigned int pin)
-{
- struct samsung_gpio_chip *chip = samsung_gpiolib_getchip(pin);
- unsigned long offs = pin - chip->chip.base;
-
- return __raw_readl(chip->base + 0x04) & (1 << offs);
-}
-EXPORT_SYMBOL(s3c2410_gpio_getpin);
-
#ifdef CONFIG_S5P_GPIO_DRVSTR
s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin)
{
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index dc5184d57892..d982593d7563 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -30,9 +30,6 @@
#include <asm/mach/irq.h>
-#include <mach/iomap.h>
-#include <mach/suspend.h>
-
#define GPIO_BANK(x) ((x) >> 5)
#define GPIO_PORT(x) (((x) >> 3) & 0x3)
#define GPIO_BIT(x) ((x) & 0x7)
diff --git a/drivers/gpio/gpio-twl4030.c b/drivers/gpio/gpio-twl4030.c
index 94256fe7bf36..c5f8ca233e1f 100644
--- a/drivers/gpio/gpio-twl4030.c
+++ b/drivers/gpio/gpio-twl4030.c
@@ -51,6 +51,7 @@
static struct gpio_chip twl_gpiochip;
+static int twl4030_gpio_base;
static int twl4030_gpio_irq_base;
/* genirq interfaces are not available to modules */
@@ -395,6 +396,29 @@ static int __devinit gpio_twl4030_debounce(u32 debounce, u8 mmc_cd)
static int gpio_twl4030_remove(struct platform_device *pdev);
+static struct twl4030_gpio_platform_data *of_gpio_twl4030(struct device *dev)
+{
+ struct twl4030_gpio_platform_data *omap_twl_info;
+
+ omap_twl_info = devm_kzalloc(dev, sizeof(*omap_twl_info), GFP_KERNEL);
+ if (!omap_twl_info)
+ return NULL;
+
+ omap_twl_info->use_leds = of_property_read_bool(dev->of_node,
+ "ti,use-leds");
+
+ of_property_read_u32(dev->of_node, "ti,debounce",
+ &omap_twl_info->debounce);
+ of_property_read_u32(dev->of_node, "ti,mmc-cd",
+ (u32 *)&omap_twl_info->mmc_cd);
+ of_property_read_u32(dev->of_node, "ti,pullups",
+ &omap_twl_info->pullups);
+ of_property_read_u32(dev->of_node, "ti,pulldowns",
+ &omap_twl_info->pulldowns);
+
+ return omap_twl_info;
+}
+
static int __devinit gpio_twl4030_probe(struct platform_device *pdev)
{
struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
@@ -427,49 +451,57 @@ no_irqs:
twl_gpiochip.ngpio = TWL4030_GPIO_MAX;
twl_gpiochip.dev = &pdev->dev;
- if (pdata) {
- twl_gpiochip.base = pdata->gpio_base;
+ if (node)
+ pdata = of_gpio_twl4030(&pdev->dev);
- /*
- * NOTE: boards may waste power if they don't set pullups
- * and pulldowns correctly ... default for non-ULPI pins is
- * pulldown, and some other pins may have external pullups
- * or pulldowns. Careful!
- */
- ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
- if (ret)
- dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
- pdata->pullups, pdata->pulldowns,
- ret);
-
- ret = gpio_twl4030_debounce(pdata->debounce, pdata->mmc_cd);
- if (ret)
- dev_dbg(&pdev->dev, "debounce %.03x %.01x --> %d\n",
- pdata->debounce, pdata->mmc_cd,
- ret);
-
- /*
- * NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
- * is (still) clear if use_leds is set.
- */
- if (pdata->use_leds)
- twl_gpiochip.ngpio += 2;
+ if (pdata == NULL) {
+ dev_err(&pdev->dev, "Platform data is missing\n");
+ return -ENXIO;
}
+ /*
+ * NOTE: boards may waste power if they don't set pullups
+ * and pulldowns correctly ... default for non-ULPI pins is
+ * pulldown, and some other pins may have external pullups
+ * or pulldowns. Careful!
+ */
+ ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
+ if (ret)
+ dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
+ pdata->pullups, pdata->pulldowns, ret);
+
+ ret = gpio_twl4030_debounce(pdata->debounce, pdata->mmc_cd);
+ if (ret)
+ dev_dbg(&pdev->dev, "debounce %.03x %.01x --> %d\n",
+ pdata->debounce, pdata->mmc_cd, ret);
+
+ /*
+ * NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
+ * is (still) clear if use_leds is set.
+ */
+ if (pdata->use_leds)
+ twl_gpiochip.ngpio += 2;
+
ret = gpiochip_add(&twl_gpiochip);
if (ret < 0) {
dev_err(&pdev->dev, "could not register gpiochip, %d\n", ret);
twl_gpiochip.ngpio = 0;
gpio_twl4030_remove(pdev);
- } else if (pdata && pdata->setup) {
+ goto out;
+ }
+
+ twl4030_gpio_base = twl_gpiochip.base;
+
+ if (pdata && pdata->setup) {
int status;
status = pdata->setup(&pdev->dev,
- pdata->gpio_base, TWL4030_GPIO_MAX);
+ twl4030_gpio_base, TWL4030_GPIO_MAX);
if (status)
dev_dbg(&pdev->dev, "setup --> %d\n", status);
}
+out:
return ret;
}
@@ -481,7 +513,7 @@ static int gpio_twl4030_remove(struct platform_device *pdev)
if (pdata && pdata->teardown) {
status = pdata->teardown(&pdev->dev,
- pdata->gpio_base, TWL4030_GPIO_MAX);
+ twl4030_gpio_base, TWL4030_GPIO_MAX);
if (status) {
dev_dbg(&pdev->dev, "teardown --> %d\n", status);
return status;
diff --git a/drivers/gpio/gpio-vt8500.c b/drivers/gpio/gpio-vt8500.c
new file mode 100644
index 000000000000..bcd8e4aa7c7d
--- /dev/null
+++ b/drivers/gpio/gpio-vt8500.c
@@ -0,0 +1,316 @@
+/* drivers/gpio/gpio-vt8500.c
+ *
+ * Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
+ * Based on 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/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/bitops.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_device.h>
+
+/*
+ We handle GPIOs by bank, each bank containing up to 32 GPIOs covered
+ by one set of registers (although not all may be valid).
+
+ Because different SoC's have different register offsets, we pass the
+ register offsets as data in vt8500_gpio_dt_ids[].
+
+ A value of NO_REG is used to indicate that this register is not
+ supported. Only used for ->en at the moment.
+*/
+
+#define NO_REG 0xFFFF
+
+/*
+ * struct vt8500_gpio_bank_regoffsets
+ * @en: offset to enable register of the bank
+ * @dir: offset to direction register of the bank
+ * @data_out: offset to the data out register of the bank
+ * @data_in: offset to the data in register of the bank
+ * @ngpio: highest valid pin in this bank
+ */
+
+struct vt8500_gpio_bank_regoffsets {
+ unsigned int en;
+ unsigned int dir;
+ unsigned int data_out;
+ unsigned int data_in;
+ unsigned char ngpio;
+};
+
+struct vt8500_gpio_data {
+ unsigned int num_banks;
+ struct vt8500_gpio_bank_regoffsets banks[];
+};
+
+#define VT8500_BANK(__en, __dir, __out, __in, __ngpio) \
+{ \
+ .en = __en, \
+ .dir = __dir, \
+ .data_out = __out, \
+ .data_in = __in, \
+ .ngpio = __ngpio, \
+}
+
+static struct vt8500_gpio_data vt8500_data = {
+ .num_banks = 7,
+ .banks = {
+ VT8500_BANK(0x00, 0x20, 0x40, 0x60, 26),
+ VT8500_BANK(0x04, 0x24, 0x44, 0x64, 28),
+ VT8500_BANK(0x08, 0x28, 0x48, 0x68, 31),
+ VT8500_BANK(0x0C, 0x2C, 0x4C, 0x6C, 19),
+ VT8500_BANK(0x10, 0x30, 0x50, 0x70, 19),
+ VT8500_BANK(0x14, 0x34, 0x54, 0x74, 23),
+ VT8500_BANK(NO_REG, 0x3C, 0x5C, 0x7C, 9),
+ },
+};
+
+static struct vt8500_gpio_data wm8505_data = {
+ .num_banks = 10,
+ .banks = {
+ VT8500_BANK(0x40, 0x68, 0x90, 0xB8, 8),
+ VT8500_BANK(0x44, 0x6C, 0x94, 0xBC, 32),
+ VT8500_BANK(0x48, 0x70, 0x98, 0xC0, 6),
+ VT8500_BANK(0x4C, 0x74, 0x9C, 0xC4, 16),
+ VT8500_BANK(0x50, 0x78, 0xA0, 0xC8, 25),
+ VT8500_BANK(0x54, 0x7C, 0xA4, 0xCC, 5),
+ VT8500_BANK(0x58, 0x80, 0xA8, 0xD0, 5),
+ VT8500_BANK(0x5C, 0x84, 0xAC, 0xD4, 12),
+ VT8500_BANK(0x60, 0x88, 0xB0, 0xD8, 16),
+ VT8500_BANK(0x64, 0x8C, 0xB4, 0xDC, 22),
+ },
+};
+
+/*
+ * No information about which bits are valid so we just make
+ * them all available until its figured out.
+ */
+static struct vt8500_gpio_data wm8650_data = {
+ .num_banks = 9,
+ .banks = {
+ VT8500_BANK(0x40, 0x80, 0xC0, 0x00, 32),
+ VT8500_BANK(0x44, 0x84, 0xC4, 0x04, 32),
+ VT8500_BANK(0x48, 0x88, 0xC8, 0x08, 32),
+ VT8500_BANK(0x4C, 0x8C, 0xCC, 0x0C, 32),
+ VT8500_BANK(0x50, 0x90, 0xD0, 0x10, 32),
+ VT8500_BANK(0x54, 0x94, 0xD4, 0x14, 32),
+ VT8500_BANK(0x58, 0x98, 0xD8, 0x18, 32),
+ VT8500_BANK(0x5C, 0x9C, 0xDC, 0x1C, 32),
+ VT8500_BANK(0x7C, 0xBC, 0xFC, 0x3C, 32),
+ },
+};
+
+struct vt8500_gpio_chip {
+ struct gpio_chip chip;
+
+ const struct vt8500_gpio_bank_regoffsets *regs;
+ void __iomem *base;
+};
+
+
+#define to_vt8500(__chip) container_of(__chip, struct vt8500_gpio_chip, chip)
+
+static int vt8500_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ u32 val;
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ if (vt8500_chip->regs->en == NO_REG)
+ return 0;
+
+ val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
+ val |= BIT(offset);
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
+
+ return 0;
+}
+
+static void vt8500_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+ u32 val;
+
+ if (vt8500_chip->regs->en == NO_REG)
+ return;
+
+ val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->en);
+ val &= ~BIT(offset);
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->en);
+}
+
+static int vt8500_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
+ val &= ~BIT(offset);
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
+
+ return 0;
+}
+
+static int vt8500_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
+ int value)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ u32 val = readl_relaxed(vt8500_chip->base + vt8500_chip->regs->dir);
+ val |= BIT(offset);
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->dir);
+
+ if (value) {
+ val = readl_relaxed(vt8500_chip->base +
+ vt8500_chip->regs->data_out);
+ val |= BIT(offset);
+ writel_relaxed(val, vt8500_chip->base +
+ vt8500_chip->regs->data_out);
+ }
+ return 0;
+}
+
+static int vt8500_gpio_get_value(struct gpio_chip *chip, unsigned offset)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ return (readl_relaxed(vt8500_chip->base + vt8500_chip->regs->data_in) >>
+ offset) & 1;
+}
+
+static void vt8500_gpio_set_value(struct gpio_chip *chip, unsigned offset,
+ int value)
+{
+ struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip);
+
+ u32 val = readl_relaxed(vt8500_chip->base +
+ vt8500_chip->regs->data_out);
+ if (value)
+ val |= BIT(offset);
+ else
+ val &= ~BIT(offset);
+
+ writel_relaxed(val, vt8500_chip->base + vt8500_chip->regs->data_out);
+}
+
+static int vt8500_of_xlate(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec, u32 *flags)
+{
+ /* bank if specificed in gpiospec->args[0] */
+ if (flags)
+ *flags = gpiospec->args[2];
+
+ return gpiospec->args[1];
+}
+
+static int vt8500_add_chips(struct platform_device *pdev, void __iomem *base,
+ const struct vt8500_gpio_data *data)
+{
+ struct vt8500_gpio_chip *vtchip;
+ struct gpio_chip *chip;
+ int i;
+ int pin_cnt = 0;
+
+ vtchip = devm_kzalloc(&pdev->dev,
+ sizeof(struct vt8500_gpio_chip) * data->num_banks,
+ GFP_KERNEL);
+ if (!vtchip) {
+ pr_err("%s: failed to allocate chip memory\n", __func__);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < data->num_banks; i++) {
+ vtchip[i].base = base;
+ vtchip[i].regs = &data->banks[i];
+
+ chip = &vtchip[i].chip;
+
+ chip->of_xlate = vt8500_of_xlate;
+ chip->of_gpio_n_cells = 3;
+ chip->of_node = pdev->dev.of_node;
+
+ chip->request = vt8500_gpio_request;
+ chip->free = vt8500_gpio_free;
+ chip->direction_input = vt8500_gpio_direction_input;
+ chip->direction_output = vt8500_gpio_direction_output;
+ chip->get = vt8500_gpio_get_value;
+ chip->set = vt8500_gpio_set_value;
+ chip->can_sleep = 0;
+ chip->base = pin_cnt;
+ chip->ngpio = data->banks[i].ngpio;
+
+ pin_cnt += data->banks[i].ngpio;
+
+ gpiochip_add(chip);
+ }
+ return 0;
+}
+
+static struct of_device_id vt8500_gpio_dt_ids[] = {
+ { .compatible = "via,vt8500-gpio", .data = &vt8500_data, },
+ { .compatible = "wm,wm8505-gpio", .data = &wm8505_data, },
+ { .compatible = "wm,wm8650-gpio", .data = &wm8650_data, },
+ { /* Sentinel */ },
+};
+
+static int __devinit vt8500_gpio_probe(struct platform_device *pdev)
+{
+ void __iomem *gpio_base;
+ struct device_node *np;
+ const struct of_device_id *of_id =
+ of_match_device(vt8500_gpio_dt_ids, &pdev->dev);
+
+ if (!of_id) {
+ dev_err(&pdev->dev, "Failed to find gpio controller\n");
+ return -ENODEV;
+ }
+
+ np = pdev->dev.of_node;
+ if (!np) {
+ dev_err(&pdev->dev, "Missing GPIO description in devicetree\n");
+ return -EFAULT;
+ }
+
+ gpio_base = of_iomap(np, 0);
+ if (!gpio_base) {
+ dev_err(&pdev->dev, "Unable to map GPIO registers\n");
+ of_node_put(np);
+ return -ENOMEM;
+ }
+
+ vt8500_add_chips(pdev, gpio_base, of_id->data);
+
+ return 0;
+}
+
+static struct platform_driver vt8500_gpio_driver = {
+ .probe = vt8500_gpio_probe,
+ .driver = {
+ .name = "vt8500-gpio",
+ .owner = THIS_MODULE,
+ .of_match_table = vt8500_gpio_dt_ids,
+ },
+};
+
+module_platform_driver(vt8500_gpio_driver);
+
+MODULE_DESCRIPTION("VT8500 GPIO Driver");
+MODULE_AUTHOR("Tony Prisk <linux@prisktech.co.nz>");
+MODULE_LICENSE("GPL v2");
+MODULE_DEVICE_TABLE(of, vt8500_gpio_dt_ids);
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index a18c4aa68b1e..f1a45997aea8 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -82,7 +82,7 @@ int of_get_named_gpio_flags(struct device_node *np, const char *propname,
gpiochip_find(&gg_data, of_gpiochip_find_and_xlate);
of_node_put(gg_data.gpiospec.np);
- pr_debug("%s exited with status %d\n", __func__, ret);
+ pr_debug("%s exited with status %d\n", __func__, gg_data.out_gpio);
return gg_data.out_gpio;
}
EXPORT_SYMBOL(of_get_named_gpio_flags);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-07 11:42:20 +0000