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-rw-r--r--drivers/gpio/Kconfig7
-rw-r--r--drivers/gpio/Makefile1
-rw-r--r--drivers/gpio/gpio-em.c2
-rw-r--r--drivers/gpio/gpio-langwell.c7
-rw-r--r--drivers/gpio/gpio-msic.c2
-rw-r--r--drivers/gpio/gpio-mxc.c5
-rw-r--r--drivers/gpio/gpio-pxa.c30
-rw-r--r--drivers/gpio/gpio-samsung.c14
-rw-r--r--drivers/gpio/gpio-sch.c3
-rw-r--r--drivers/gpio/gpio-tps6586x.c158
10 files changed, 212 insertions, 17 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 502b5ea43f4..b16c8a72a2e 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -597,6 +597,13 @@ config GPIO_AB8500
help
Select this to enable the AB8500 IC GPIO driver
+config GPIO_TPS6586X
+ bool "TPS6586X GPIO"
+ depends on MFD_TPS6586X
+ help
+ Select this option to enable GPIO driver for the TPS6586X
+ chip family.
+
config GPIO_TPS65910
bool "TPS65910 GPIO"
depends on MFD_TPS65910
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index d37048105a8..153caceeb05 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -63,6 +63,7 @@ obj-$(CONFIG_GPIO_TC3589X) += gpio-tc3589x.o
obj-$(CONFIG_ARCH_TEGRA) += gpio-tegra.o
obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o
obj-$(CONFIG_ARCH_DAVINCI_TNETV107X) += gpio-tnetv107x.o
+obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o
obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o
obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o
obj-$(CONFIG_GPIO_TWL4030) += gpio-twl4030.o
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index 150d9768811..ae37181798b 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -266,7 +266,7 @@ static int __devinit em_gio_irq_domain_init(struct em_gio_priv *p)
return 0;
}
-static void __devexit em_gio_irq_domain_cleanup(struct em_gio_priv *p)
+static void em_gio_irq_domain_cleanup(struct em_gio_priv *p)
{
struct gpio_em_config *pdata = p->pdev->dev.platform_data;
diff --git a/drivers/gpio/gpio-langwell.c b/drivers/gpio/gpio-langwell.c
index a1c8754f52c..202a99207b7 100644
--- a/drivers/gpio/gpio-langwell.c
+++ b/drivers/gpio/gpio-langwell.c
@@ -339,7 +339,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
resource_size_t start, len;
struct lnw_gpio *lnw;
u32 gpio_base;
- int retval = 0;
+ int retval;
int ngpio = id->driver_data;
retval = pci_enable_device(pdev);
@@ -357,6 +357,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
base = ioremap_nocache(start, len);
if (!base) {
dev_err(&pdev->dev, "error mapping bar1\n");
+ retval = -EFAULT;
goto err3;
}
gpio_base = *((u32 *)base + 1);
@@ -381,8 +382,10 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
lnw->domain = irq_domain_add_linear(pdev->dev.of_node, ngpio,
&lnw_gpio_irq_ops, lnw);
- if (!lnw->domain)
+ if (!lnw->domain) {
+ retval = -ENOMEM;
goto err3;
+ }
lnw->reg_base = base;
lnw->chip.label = dev_name(&pdev->dev);
diff --git a/drivers/gpio/gpio-msic.c b/drivers/gpio/gpio-msic.c
index 71a838f4450..b3898628586 100644
--- a/drivers/gpio/gpio-msic.c
+++ b/drivers/gpio/gpio-msic.c
@@ -99,7 +99,7 @@ static int msic_gpio_to_oreg(unsigned offset)
if (offset < 20)
return INTEL_MSIC_GPIO0HV0CTLO - offset + 16;
- return INTEL_MSIC_GPIO1HV0CTLO + offset + 20;
+ return INTEL_MSIC_GPIO1HV0CTLO - offset + 20;
}
static int msic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 4db460b6ecf..80f44bb64a8 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -465,9 +465,8 @@ static int __devinit mxc_gpio_probe(struct platform_device *pdev)
goto out_iounmap;
port->bgc.gc.to_irq = mxc_gpio_to_irq;
- port->bgc.gc.base = pdev->id * 32;
- port->bgc.dir = port->bgc.read_reg(port->bgc.reg_dir);
- port->bgc.data = port->bgc.read_reg(port->bgc.reg_set);
+ port->bgc.gc.base = (pdev->id < 0) ? of_alias_get_id(np, "gpio") * 32 :
+ pdev->id * 32;
err = gpiochip_add(&port->bgc.gc);
if (err)
diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c
index 58a6a63a6ec..9cac88a65f7 100644
--- a/drivers/gpio/gpio-pxa.c
+++ b/drivers/gpio/gpio-pxa.c
@@ -62,6 +62,7 @@ int pxa_last_gpio;
#ifdef CONFIG_OF
static struct irq_domain *domain;
+static struct device_node *pxa_gpio_of_node;
#endif
struct pxa_gpio_chip {
@@ -277,6 +278,24 @@ static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
(value ? GPSR_OFFSET : GPCR_OFFSET));
}
+#ifdef CONFIG_OF_GPIO
+static int pxa_gpio_of_xlate(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec,
+ u32 *flags)
+{
+ if (gpiospec->args[0] > pxa_last_gpio)
+ return -EINVAL;
+
+ if (gc != &pxa_gpio_chips[gpiospec->args[0] / 32].chip)
+ return -EINVAL;
+
+ if (flags)
+ *flags = gpiospec->args[1];
+
+ return gpiospec->args[0] % 32;
+}
+#endif
+
static int __devinit pxa_init_gpio_chip(int gpio_end,
int (*set_wake)(unsigned int, unsigned int))
{
@@ -304,6 +323,11 @@ static int __devinit pxa_init_gpio_chip(int gpio_end,
c->get = pxa_gpio_get;
c->set = pxa_gpio_set;
c->to_irq = pxa_gpio_to_irq;
+#ifdef CONFIG_OF_GPIO
+ c->of_node = pxa_gpio_of_node;
+ c->of_xlate = pxa_gpio_of_xlate;
+ c->of_gpio_n_cells = 2;
+#endif
/* number of GPIOs on last bank may be less than 32 */
c->ngpio = (gpio + 31 > gpio_end) ? (gpio_end - gpio + 1) : 32;
@@ -488,6 +512,7 @@ static int pxa_gpio_nums(void)
return count;
}
+#ifdef CONFIG_OF
static struct of_device_id pxa_gpio_dt_ids[] = {
{ .compatible = "mrvl,pxa-gpio" },
{ .compatible = "mrvl,mmp-gpio", .data = (void *)MMP_GPIO },
@@ -505,9 +530,9 @@ static int pxa_irq_domain_map(struct irq_domain *d, unsigned int irq,
const struct irq_domain_ops pxa_irq_domain_ops = {
.map = pxa_irq_domain_map,
+ .xlate = irq_domain_xlate_twocell,
};
-#ifdef CONFIG_OF
static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev)
{
int ret, nr_banks, nr_gpios, irq_base;
@@ -545,6 +570,7 @@ static int __devinit pxa_gpio_probe_dt(struct platform_device *pdev)
}
domain = irq_domain_add_legacy(np, nr_gpios, irq_base, 0,
&pxa_irq_domain_ops, NULL);
+ pxa_gpio_of_node = np;
return 0;
err:
iounmap(gpio_reg_base);
@@ -653,7 +679,7 @@ static struct platform_driver pxa_gpio_driver = {
.probe = pxa_gpio_probe,
.driver = {
.name = "pxa-gpio",
- .of_match_table = pxa_gpio_dt_ids,
+ .of_match_table = of_match_ptr(pxa_gpio_dt_ids),
},
};
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index 92f7b2bb79d..ba126cc0407 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -2454,12 +2454,6 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
},
}, {
.chip = {
- .base = EXYNOS5_GPC4(0),
- .ngpio = EXYNOS5_GPIO_C4_NR,
- .label = "GPC4",
- },
- }, {
- .chip = {
.base = EXYNOS5_GPD0(0),
.ngpio = EXYNOS5_GPIO_D0_NR,
.label = "GPD0",
@@ -2513,6 +2507,12 @@ static struct samsung_gpio_chip exynos5_gpios_1[] = {
.label = "GPY6",
},
}, {
+ .chip = {
+ .base = EXYNOS5_GPC4(0),
+ .ngpio = EXYNOS5_GPIO_C4_NR,
+ .label = "GPC4",
+ },
+ }, {
.config = &samsung_gpio_cfgs[9],
.irq_base = IRQ_EINT(0),
.chip = {
@@ -2836,7 +2836,7 @@ static __init void exynos5_gpiolib_init(void)
}
/* need to set base address for gpc4 */
- exynos5_gpios_1[11].base = gpio_base1 + 0x2E0;
+ exynos5_gpios_1[20].base = gpio_base1 + 0x2E0;
/* need to set base address for gpx */
chip = &exynos5_gpios_1[21];
diff --git a/drivers/gpio/gpio-sch.c b/drivers/gpio/gpio-sch.c
index 424dce8e3f3..8707d4572a0 100644
--- a/drivers/gpio/gpio-sch.c
+++ b/drivers/gpio/gpio-sch.c
@@ -241,7 +241,8 @@ static int __devinit sch_gpio_probe(struct platform_device *pdev)
break;
default:
- return -ENODEV;
+ err = -ENODEV;
+ goto err_sch_gpio_core;
}
sch_gpio_core.dev = &pdev->dev;
diff --git a/drivers/gpio/gpio-tps6586x.c b/drivers/gpio/gpio-tps6586x.c
new file mode 100644
index 00000000000..2526b3bb0fa
--- /dev/null
+++ b/drivers/gpio/gpio-tps6586x.c
@@ -0,0 +1,158 @@
+/*
+ * TI TPS6586x GPIO driver
+ *
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
+ * Author: Laxman dewangan <ldewangan@nvidia.com>
+ *
+ * Based on tps6586x.c
+ * Copyright (c) 2010 CompuLab Ltd.
+ * Mike Rapoport <mike@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/tps6586x.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+/* GPIO control registers */
+#define TPS6586X_GPIOSET1 0x5d
+#define TPS6586X_GPIOSET2 0x5e
+
+struct tps6586x_gpio {
+ struct gpio_chip gpio_chip;
+ struct device *parent;
+};
+
+static inline struct tps6586x_gpio *to_tps6586x_gpio(struct gpio_chip *chip)
+{
+ return container_of(chip, struct tps6586x_gpio, gpio_chip);
+}
+
+static int tps6586x_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+ struct tps6586x_gpio *tps6586x_gpio = to_tps6586x_gpio(gc);
+ uint8_t val;
+ int ret;
+
+ ret = tps6586x_read(tps6586x_gpio->parent, TPS6586X_GPIOSET2, &val);
+ if (ret)
+ return ret;
+
+ return !!(val & (1 << offset));
+}
+
+static void tps6586x_gpio_set(struct gpio_chip *gc, unsigned offset,
+ int value)
+{
+ struct tps6586x_gpio *tps6586x_gpio = to_tps6586x_gpio(gc);
+
+ tps6586x_update(tps6586x_gpio->parent, TPS6586X_GPIOSET2,
+ value << offset, 1 << offset);
+}
+
+static int tps6586x_gpio_output(struct gpio_chip *gc, unsigned offset,
+ int value)
+{
+ struct tps6586x_gpio *tps6586x_gpio = to_tps6586x_gpio(gc);
+ uint8_t val, mask;
+
+ tps6586x_gpio_set(gc, offset, value);
+
+ val = 0x1 << (offset * 2);
+ mask = 0x3 << (offset * 2);
+
+ return tps6586x_update(tps6586x_gpio->parent, TPS6586X_GPIOSET1,
+ val, mask);
+}
+
+static int __devinit tps6586x_gpio_probe(struct platform_device *pdev)
+{
+ struct tps6586x_platform_data *pdata;
+ struct tps6586x_gpio *tps6586x_gpio;
+ int ret;
+
+ pdata = dev_get_platdata(pdev->dev.parent);
+ tps6586x_gpio = devm_kzalloc(&pdev->dev,
+ sizeof(*tps6586x_gpio), GFP_KERNEL);
+ if (!tps6586x_gpio) {
+ dev_err(&pdev->dev, "Could not allocate tps6586x_gpio\n");
+ return -ENOMEM;
+ }
+
+ tps6586x_gpio->parent = pdev->dev.parent;
+
+ tps6586x_gpio->gpio_chip.owner = THIS_MODULE;
+ tps6586x_gpio->gpio_chip.label = pdev->name;
+ tps6586x_gpio->gpio_chip.dev = &pdev->dev;
+ tps6586x_gpio->gpio_chip.ngpio = 4;
+ tps6586x_gpio->gpio_chip.can_sleep = 1;
+
+ /* FIXME: add handling of GPIOs as dedicated inputs */
+ tps6586x_gpio->gpio_chip.direction_output = tps6586x_gpio_output;
+ tps6586x_gpio->gpio_chip.set = tps6586x_gpio_set;
+ tps6586x_gpio->gpio_chip.get = tps6586x_gpio_get;
+
+#ifdef CONFIG_OF_GPIO
+ tps6586x_gpio->gpio_chip.of_node = pdev->dev.parent->of_node;
+#endif
+ if (pdata && pdata->gpio_base)
+ tps6586x_gpio->gpio_chip.base = pdata->gpio_base;
+ else
+ tps6586x_gpio->gpio_chip.base = -1;
+
+ ret = gpiochip_add(&tps6586x_gpio->gpio_chip);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, tps6586x_gpio);
+
+ return ret;
+}
+
+static int __devexit tps6586x_gpio_remove(struct platform_device *pdev)
+{
+ struct tps6586x_gpio *tps6586x_gpio = platform_get_drvdata(pdev);
+
+ return gpiochip_remove(&tps6586x_gpio->gpio_chip);
+}
+
+static struct platform_driver tps6586x_gpio_driver = {
+ .driver.name = "tps6586x-gpio",
+ .driver.owner = THIS_MODULE,
+ .probe = tps6586x_gpio_probe,
+ .remove = __devexit_p(tps6586x_gpio_remove),
+};
+
+static int __init tps6586x_gpio_init(void)
+{
+ return platform_driver_register(&tps6586x_gpio_driver);
+}
+subsys_initcall(tps6586x_gpio_init);
+
+static void __exit tps6586x_gpio_exit(void)
+{
+ platform_driver_unregister(&tps6586x_gpio_driver);
+}
+module_exit(tps6586x_gpio_exit);
+
+MODULE_ALIAS("platform:tps6586x-gpio");
+MODULE_DESCRIPTION("GPIO interface for TPS6586X PMIC");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-12 01:56:37 +0000