Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / mach-omap2 / smartreflex-class3.c

diff --git a/kernel/arch/arm/mach-omap2/smartreflex-class3.c b/kernel/arch/arm/mach-omap2/smartreflex-class3.c
new file mode 100644 (file)
index 0000000..d3a588c
--- /dev/null
+++ b/kernel/arch/arm/mach-omap2/smartreflex-class3.c
@@ -0,0 +1,62 @@
+/*
+ * Smart reflex Class 3 specific implementations
+ *
+ * Author: Thara Gopinath       <thara@ti.com>
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ * Thara Gopinath <thara@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.
+ */
+
+#include <linux/power/smartreflex.h>
+#include "soc.h"
+#include "voltage.h"
+
+static int sr_class3_enable(struct omap_sr *sr)
+{
+       unsigned long volt = voltdm_get_voltage(sr->voltdm);
+
+       if (!volt) {
+               pr_warn("%s: Curr voltage unknown. Cannot enable %s\n",
+                       __func__, sr->name);
+               return -ENODATA;
+       }
+
+       omap_vp_enable(sr->voltdm);
+       return sr_enable(sr, volt);
+}
+
+static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
+{
+       sr_disable_errgen(sr);
+       omap_vp_disable(sr->voltdm);
+       sr_disable(sr);
+       if (is_volt_reset)
+               voltdm_reset(sr->voltdm);
+
+       return 0;
+}
+
+static int sr_class3_configure(struct omap_sr *sr)
+{
+       return sr_configure_errgen(sr);
+}
+
+/* SR class3 structure */
+static struct omap_sr_class_data class3_data = {
+       .enable = sr_class3_enable,
+       .disable = sr_class3_disable,
+       .configure = sr_class3_configure,
+       .class_type = SR_CLASS3,
+};
+
+/* Smartreflex Class3 init API to be called from board file */
+static int __init sr_class3_init(void)
+{
+       pr_info("SmartReflex Class3 initialized\n");
+       return sr_register_class(&class3_data);
+}
+omap_late_initcall(sr_class3_init);