mfd: Add support for Intel Sunrisepoint LPSS devices

The new coming Intel platforms such as Skylake will contain Sunrisepoint PCH.
The main difference to the previous platforms is that the LPSS devices are
compound devices where usually main (SPI, HSUART, or I2C) and DMA IPs are
present.

This patch brings the driver for such devices found on Sunrisepoint PCH.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 62 insertions, 0 deletions

diff --git a/drivers/mfd/intel-lpss.h b/drivers/mfd/intel-lpss.h
new file mode 100644
index 000000000000..f28cb28a62f8
--- /dev/null
+++ b/drivers/mfd/intel-lpss.h
@@ -0,0 +1,62 @@
+/*
+ * Intel LPSS core 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.
+ */
+
+#ifndef __MFD_INTEL_LPSS_H
+#define __MFD_INTEL_LPSS_H
+
+struct device;
+struct resource;
+
+struct intel_lpss_platform_info {
+        struct resource *mem;
+        int irq;
+        unsigned long clk_rate;
+        const char *clk_con_id;
+};
+
+int intel_lpss_probe(struct device *dev,
+                     const struct intel_lpss_platform_info *info);
+void intel_lpss_remove(struct device *dev);
+
+#ifdef CONFIG_PM
+int intel_lpss_prepare(struct device *dev);
+int intel_lpss_suspend(struct device *dev);
+int intel_lpss_resume(struct device *dev);
+
+#ifdef CONFIG_PM_SLEEP
+#define INTEL_LPSS_SLEEP_PM_OPS                 \
+        .prepare = intel_lpss_prepare,          \
+        .suspend = intel_lpss_suspend,          \
+        .resume = intel_lpss_resume,            \
+        .freeze = intel_lpss_suspend,           \
+        .thaw = intel_lpss_resume,              \
+        .poweroff = intel_lpss_suspend,         \
+        .restore = intel_lpss_resume,
+#endif
+
+#define INTEL_LPSS_RUNTIME_PM_OPS               \
+        .runtime_suspend = intel_lpss_suspend,  \
+        .runtime_resume = intel_lpss_resume,
+
+#else /* !CONFIG_PM */
+#define INTEL_LPSS_SLEEP_PM_OPS
+#define INTEL_LPSS_RUNTIME_PM_OPS
+#endif /* CONFIG_PM */
+
+#define INTEL_LPSS_PM_OPS(name)                 \
+const struct dev_pm_ops name = {                \
+        INTEL_LPSS_SLEEP_PM_OPS                 \
+        INTEL_LPSS_RUNTIME_PM_OPS               \
+}
+
+#endif /* __MFD_INTEL_LPSS_H */