From: "Andrew F. Davis" <afd@ti.com>
To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Linus Walleij <linus.walleij@linaro.org>,
Alexandre Courbot <gnurou@gmail.com>,
Samuel Ortiz <sameo@linux.intel.com>,
Lee Jones <lee.jones@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>
Cc: <devicetree@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, "Andrew F. Davis" <afd@ti.com>
Subject: [PATCH v3 6/6] gpio: tps65086: Add GPIO driver for the TPS65086 PMIC
Date: Wed, 4 Nov 2015 11:12:15 -0600 [thread overview]
Message-ID: <1446657135-7820-7-git-send-email-afd@ti.com> (raw)
In-Reply-To: <1446657135-7820-1-git-send-email-afd@ti.com>
Add support for the TPS65086 PMIC GPOs.
TPS65086 has four configurable GPOs that can be used for several
purposes.
Signed-off-by: Andrew F. Davis <afd@ti.com>
---
drivers/gpio/Kconfig | 6 +++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-tps65086.c | 115 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 122 insertions(+)
create mode 100644 drivers/gpio/gpio-tps65086.c
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b4fc9e4..ccb7e0d 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -824,6 +824,12 @@ config GPIO_TIMBERDALE
---help---
Add support for the GPIO IP in the timberdale FPGA.
+config GPIO_TPS65086
+ tristate "TI TPS65086 GPO"
+ depends on MFD_TPS65086
+ help
+ This driver supports the GPO on TI TPS65086x PMICs.
+
config GPIO_TPS6586X
bool "TPS6586X GPIO"
depends on MFD_TPS6586X
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index f79a7c4..2611c7e 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -94,6 +94,7 @@ obj-$(CONFIG_GPIO_TC3589X) += gpio-tc3589x.o
obj-$(CONFIG_ARCH_TEGRA) += gpio-tegra.o
obj-$(CONFIG_GPIO_TIMBERDALE) += gpio-timberdale.o
obj-$(CONFIG_GPIO_PALMAS) += gpio-palmas.o
+obj-$(CONFIG_GPIO_TPS65086) += gpio-tps65086.o
obj-$(CONFIG_GPIO_TPS6586X) += gpio-tps6586x.o
obj-$(CONFIG_GPIO_TPS65910) += gpio-tps65910.o
obj-$(CONFIG_GPIO_TPS65912) += gpio-tps65912.o
diff --git a/drivers/gpio/gpio-tps65086.c b/drivers/gpio/gpio-tps65086.c
new file mode 100644
index 0000000..44d9f86
--- /dev/null
+++ b/drivers/gpio/gpio-tps65086.c
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include <linux/mfd/tps65086.h>
+
+struct tps65086_gpio {
+ struct gpio_chip gpio_chip;
+ struct tps65086 *tps;
+};
+
+static inline struct tps65086_gpio *to_tps65086_gpio(struct gpio_chip *chip)
+{
+ return container_of(chip, struct tps65086_gpio, gpio_chip);
+}
+
+static int tps65086_gpio_get(struct gpio_chip *gc, unsigned offset)
+{
+ struct tps65086_gpio *gpio = to_tps65086_gpio(gc);
+ int ret, val;
+
+ ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);
+ if (ret < 0)
+ return ret;
+
+ return val & BIT(4 + offset);
+}
+
+static void tps65086_gpio_set(struct gpio_chip *gc, unsigned offset,
+ int value)
+{
+ struct tps65086_gpio *gpio = to_tps65086_gpio(gc);
+
+ regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
+ BIT(4 + offset), value ? BIT(4 + offset) : 0);
+}
+
+static struct gpio_chip template_chip = {
+ .label = "tps65086-gpio",
+ .owner = THIS_MODULE,
+ .get = tps65086_gpio_get,
+ .set = tps65086_gpio_set,
+ .can_sleep = true,
+ .ngpio = 4,
+ .base = -1,
+};
+
+static int tps65086_gpio_probe(struct platform_device *pdev)
+{
+ struct tps65086_gpio *gpio;
+ int ret;
+
+ gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
+ if (!gpio)
+ return -ENOMEM;
+
+ gpio->tps = dev_get_drvdata(pdev->dev.parent);
+ gpio->gpio_chip = template_chip;
+ ret = gpiochip_add(&gpio->gpio_chip);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, gpio);
+
+ return 0;
+}
+
+static int tps65086_gpio_remove(struct platform_device *pdev)
+{
+ struct tps65086_gpio *gpio = platform_get_drvdata(pdev);
+
+ gpiochip_remove(&gpio->gpio_chip);
+
+ return 0;
+}
+
+static const struct platform_device_id tps65086_gpio_id_table[] = {
+ { "tps65086-gpio", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table);
+
+static struct platform_driver tps65086_gpio_driver = {
+ .driver = {
+ .name = "tps65086-gpio",
+ },
+ .probe = tps65086_gpio_probe,
+ .remove = tps65086_gpio_remove,
+ .id_table = tps65086_gpio_id_table,
+};
+module_platform_driver(tps65086_gpio_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65086 GPIO driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
next prev parent reply other threads:[~2015-11-04 17:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-04 17:12 [PATCH v3 0/6] Add support for the TI TPS65086 PMIC Andrew F. Davis
2015-11-04 17:12 ` [PATCH v3 1/6] Documentation: tps65086: Add DT bindings for the " Andrew F. Davis
2015-11-04 22:55 ` Rob Herring
2015-11-04 17:12 ` [PATCH v3 2/6] Documentation: tps65086: Add DT bindings for the TPS65086 regulators Andrew F. Davis
2015-11-04 22:51 ` Rob Herring
2015-11-04 17:12 ` [PATCH v3 3/6] Documentation: tps65086: Add DT bindings for the TPS65086 GPO controller Andrew F. Davis
2015-11-04 22:57 ` Rob Herring
2015-11-17 9:12 ` Linus Walleij
2015-11-04 17:12 ` [PATCH v3 4/6] mfd: tps65086: Add driver for the TPS65086 PMIC Andrew F. Davis
2015-11-04 17:12 ` [PATCH v3 5/6] regulator: tps65086: Add regulator " Andrew F. Davis
2015-11-04 17:12 ` Andrew F. Davis [this message]
2015-11-17 9:17 ` [PATCH v3 6/6] gpio: tps65086: Add GPIO " Linus Walleij
2015-11-17 16:11 ` Andrew F. Davis
2015-11-18 9:44 ` Linus Walleij
2015-11-18 16:41 ` Andrew F. Davis
2015-11-30 8:28 ` Linus Walleij
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