Merge tag 'v2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

[mv-sheeva.git] / arch / arm / mach-omap2 / smartreflex-class3.c

diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c
new file mode 100644 (file)
index 0000000..60e7055
--- /dev/null
+++ b/arch/arm/mach-omap2/smartreflex-class3.c
@@ -0,0 +1,59 @@
+/*
+ * 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 <plat/smartreflex.h>
+
+static int sr_class3_enable(struct voltagedomain *voltdm)
+{
+       unsigned long volt = omap_voltage_get_nom_volt(voltdm);
+
+       if (!volt) {
+               pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n",
+                               __func__, voltdm->name);
+               return -ENODATA;
+       }
+
+       omap_vp_enable(voltdm);
+       return sr_enable(voltdm, volt);
+}
+
+static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)
+{
+       omap_vp_disable(voltdm);
+       sr_disable(voltdm);
+       if (is_volt_reset)
+               omap_voltage_reset(voltdm);
+
+       return 0;
+}
+
+static int sr_class3_configure(struct voltagedomain *voltdm)
+{
+       return sr_configure_errgen(voltdm);
+}
+
+/* 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);
+}
+late_initcall(sr_class3_init);