Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pwm / pwm-lpss-platform.c

diff --git a/kernel/drivers/pwm/pwm-lpss-platform.c b/kernel/drivers/pwm/pwm-lpss-platform.c
new file mode 100644 (file)
index 0000000..18a9c88
--- /dev/null
+++ b/kernel/drivers/pwm/pwm-lpss-platform.c
@@ -0,0 +1,68 @@
+/*
+ * Intel Low Power Subsystem PWM controller driver
+ *
+ * Copyright (C) 2014, Intel Corporation
+ *
+ * Derived from the original pwm-lpss.c
+ *
+ * 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.
+ */
+
+#include <linux/acpi.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "pwm-lpss.h"
+
+static int pwm_lpss_probe_platform(struct platform_device *pdev)
+{
+       const struct pwm_lpss_boardinfo *info;
+       const struct acpi_device_id *id;
+       struct pwm_lpss_chip *lpwm;
+       struct resource *r;
+
+       id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
+       if (!id)
+               return -ENODEV;
+
+       info = (const struct pwm_lpss_boardinfo *)id->driver_data;
+       r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+       lpwm = pwm_lpss_probe(&pdev->dev, r, info);
+       if (IS_ERR(lpwm))
+               return PTR_ERR(lpwm);
+
+       platform_set_drvdata(pdev, lpwm);
+       return 0;
+}
+
+static int pwm_lpss_remove_platform(struct platform_device *pdev)
+{
+       struct pwm_lpss_chip *lpwm = platform_get_drvdata(pdev);
+
+       return pwm_lpss_remove(lpwm);
+}
+
+static const struct acpi_device_id pwm_lpss_acpi_match[] = {
+       { "80860F09", (unsigned long)&pwm_lpss_byt_info },
+       { "80862288", (unsigned long)&pwm_lpss_bsw_info },
+       { },
+};
+MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);
+
+static struct platform_driver pwm_lpss_driver_platform = {
+       .driver = {
+               .name = "pwm-lpss",
+               .acpi_match_table = pwm_lpss_acpi_match,
+       },
+       .probe = pwm_lpss_probe_platform,
+       .remove = pwm_lpss_remove_platform,
+};
+module_platform_driver(pwm_lpss_driver_platform);
+
+MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:pwm-lpss");