[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/gpio/gpio-wm8350.c b/src/kernel/linux/v4.14/drivers/gpio/gpio-wm8350.c
new file mode 100644
index 0000000..e46752e
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/gpio/gpio-wm8350.c
@@ -0,0 +1,160 @@
+/*
+ * gpiolib support for Wolfson WM835x PMICs
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/mfd/core.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+
+#include <linux/mfd/wm8350/core.h>
+#include <linux/mfd/wm8350/gpio.h>
+
+struct wm8350_gpio_data {
+ struct wm8350 *wm8350;
+ struct gpio_chip gpio_chip;
+};
+
+static int wm8350_gpio_direction_in(struct gpio_chip *chip, unsigned offset)
+{
+ struct wm8350_gpio_data *wm8350_gpio = gpiochip_get_data(chip);
+ struct wm8350 *wm8350 = wm8350_gpio->wm8350;
+
+ return wm8350_set_bits(wm8350, WM8350_GPIO_CONFIGURATION_I_O,
+ 1 << offset);
+}
+
+static int wm8350_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct wm8350_gpio_data *wm8350_gpio = gpiochip_get_data(chip);
+ struct wm8350 *wm8350 = wm8350_gpio->wm8350;
+ int ret;
+
+ ret = wm8350_reg_read(wm8350, WM8350_GPIO_LEVEL);
+ if (ret < 0)
+ return ret;
+
+ if (ret & (1 << offset))
+ return 1;
+ else
+ return 0;
+}
+
+static void wm8350_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct wm8350_gpio_data *wm8350_gpio = gpiochip_get_data(chip);
+ struct wm8350 *wm8350 = wm8350_gpio->wm8350;
+
+ if (value)
+ wm8350_set_bits(wm8350, WM8350_GPIO_LEVEL, 1 << offset);
+ else
+ wm8350_clear_bits(wm8350, WM8350_GPIO_LEVEL, 1 << offset);
+}
+
+static int wm8350_gpio_direction_out(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct wm8350_gpio_data *wm8350_gpio = gpiochip_get_data(chip);
+ struct wm8350 *wm8350 = wm8350_gpio->wm8350;
+ int ret;
+
+ ret = wm8350_clear_bits(wm8350, WM8350_GPIO_CONFIGURATION_I_O,
+ 1 << offset);
+ if (ret < 0)
+ return ret;
+
+ /* Don't have an atomic direction/value setup */
+ wm8350_gpio_set(chip, offset, value);
+
+ return 0;
+}
+
+static int wm8350_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ struct wm8350_gpio_data *wm8350_gpio = gpiochip_get_data(chip);
+ struct wm8350 *wm8350 = wm8350_gpio->wm8350;
+
+ if (!wm8350->irq_base)
+ return -EINVAL;
+
+ return wm8350->irq_base + WM8350_IRQ_GPIO(offset);
+}
+
+static const struct gpio_chip template_chip = {
+ .label = "wm8350",
+ .owner = THIS_MODULE,
+ .direction_input = wm8350_gpio_direction_in,
+ .get = wm8350_gpio_get,
+ .direction_output = wm8350_gpio_direction_out,
+ .set = wm8350_gpio_set,
+ .to_irq = wm8350_gpio_to_irq,
+ .can_sleep = true,
+};
+
+static int wm8350_gpio_probe(struct platform_device *pdev)
+{
+ struct wm8350 *wm8350 = dev_get_drvdata(pdev->dev.parent);
+ struct wm8350_platform_data *pdata = dev_get_platdata(wm8350->dev);
+ struct wm8350_gpio_data *wm8350_gpio;
+ int ret;
+
+ wm8350_gpio = devm_kzalloc(&pdev->dev, sizeof(*wm8350_gpio),
+ GFP_KERNEL);
+ if (wm8350_gpio == NULL)
+ return -ENOMEM;
+
+ wm8350_gpio->wm8350 = wm8350;
+ wm8350_gpio->gpio_chip = template_chip;
+ wm8350_gpio->gpio_chip.ngpio = 13;
+ wm8350_gpio->gpio_chip.parent = &pdev->dev;
+ if (pdata && pdata->gpio_base)
+ wm8350_gpio->gpio_chip.base = pdata->gpio_base;
+ else
+ wm8350_gpio->gpio_chip.base = -1;
+
+ ret = devm_gpiochip_add_data(&pdev->dev, &wm8350_gpio->gpio_chip,
+ wm8350_gpio);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, wm8350_gpio);
+
+ return ret;
+}
+
+static struct platform_driver wm8350_gpio_driver = {
+ .driver.name = "wm8350-gpio",
+ .probe = wm8350_gpio_probe,
+};
+
+static int __init wm8350_gpio_init(void)
+{
+ return platform_driver_register(&wm8350_gpio_driver);
+}
+subsys_initcall(wm8350_gpio_init);
+
+static void __exit wm8350_gpio_exit(void)
+{
+ platform_driver_unregister(&wm8350_gpio_driver);
+}
+module_exit(wm8350_gpio_exit);
+
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("GPIO interface for WM8350 PMICs");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm8350-gpio");