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Diffstat (limited to 'kernel/drivers/mfd/intel-lpss-acpi.c')
-rw-r--r--kernel/drivers/mfd/intel-lpss-acpi.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/intel-lpss-acpi.c b/kernel/drivers/mfd/intel-lpss-acpi.c
new file mode 100644
index 000000000..b6fd9041f
--- /dev/null
+++ b/kernel/drivers/mfd/intel-lpss-acpi.c
@@ -0,0 +1,100 @@
+/*
+ * Intel LPSS ACPI support.
+ *
+ * Copyright (C) 2015, Intel Corporation
+ *
+ * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ * Mika Westerberg <mika.westerberg@linux.intel.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.
+ */
+
+#include <linux/acpi.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_device.h>
+
+#include "intel-lpss.h"
+
+static const struct intel_lpss_platform_info spt_info = {
+ .clk_rate = 120000000,
+};
+
+static const struct intel_lpss_platform_info bxt_info = {
+ .clk_rate = 100000000,
+};
+
+static const struct intel_lpss_platform_info bxt_i2c_info = {
+ .clk_rate = 133000000,
+};
+
+static const struct acpi_device_id intel_lpss_acpi_ids[] = {
+ /* SPT */
+ { "INT3446", (kernel_ulong_t)&spt_info },
+ { "INT3447", (kernel_ulong_t)&spt_info },
+ /* BXT */
+ { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
+ { "80860ABC", (kernel_ulong_t)&bxt_info },
+ { "80860AC2", (kernel_ulong_t)&bxt_info },
+ /* APL */
+ { "80865AAC", (kernel_ulong_t)&bxt_i2c_info },
+ { "80865ABC", (kernel_ulong_t)&bxt_info },
+ { "80865AC2", (kernel_ulong_t)&bxt_info },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
+
+static int intel_lpss_acpi_probe(struct platform_device *pdev)
+{
+ struct intel_lpss_platform_info *info;
+ const struct acpi_device_id *id;
+
+ id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
+ if (!id)
+ return -ENODEV;
+
+ info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
+ GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ info->irq = platform_get_irq(pdev, 0);
+
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return intel_lpss_probe(&pdev->dev, info);
+}
+
+static int intel_lpss_acpi_remove(struct platform_device *pdev)
+{
+ intel_lpss_remove(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
+
+static struct platform_driver intel_lpss_acpi_driver = {
+ .probe = intel_lpss_acpi_probe,
+ .remove = intel_lpss_acpi_remove,
+ .driver = {
+ .name = "intel-lpss",
+ .acpi_match_table = intel_lpss_acpi_ids,
+ .pm = &intel_lpss_acpi_pm_ops,
+ },
+};
+
+module_platform_driver(intel_lpss_acpi_driver);
+
+MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
+MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
+MODULE_DESCRIPTION("Intel LPSS ACPI driver");
+MODULE_LICENSE("GPL v2");