CLK: Add basic infrastructure for Pistachio clocks

[firefly-linux-kernel-4.4.55.git] / drivers / clk / pistachio / clk.h

diff --git a/drivers/clk/pistachio/clk.h b/drivers/clk/pistachio/clk.h
new file mode 100644 (file)
index 0000000..e735107
--- /dev/null
+++ b/drivers/clk/pistachio/clk.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2014 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef __PISTACHIO_CLK_H
+#define __PISTACHIO_CLK_H
+
+#include <linux/clk-provider.h>
+
+struct pistachio_gate {
+       unsigned int id;
+       unsigned long reg;
+       unsigned int shift;
+       const char *name;
+       const char *parent;
+};
+
+#define GATE(_id, _name, _pname, _reg, _shift) \
+       {                                       \
+               .id     = _id,                  \
+               .reg    = _reg,                 \
+               .shift  = _shift,               \
+               .name   = _name,                \
+               .parent = _pname,               \
+       }
+
+struct pistachio_mux {
+       unsigned int id;
+       unsigned long reg;
+       unsigned int shift;
+       unsigned int num_parents;
+       const char *name;
+       const char **parents;
+};
+
+#define PNAME(x) static const char *x[] __initconst
+
+#define MUX(_id, _name, _pnames, _reg, _shift)                 \
+       {                                                       \
+               .id             = _id,                          \
+               .reg            = _reg,                         \
+               .shift          = _shift,                       \
+               .name           = _name,                        \
+               .parents        = _pnames,                      \
+               .num_parents    = ARRAY_SIZE(_pnames)           \
+       }
+
+
+struct pistachio_div {
+       unsigned int id;
+       unsigned long reg;
+       unsigned int width;
+       unsigned int div_flags;
+       const char *name;
+       const char *parent;
+};
+
+#define DIV(_id, _name, _pname, _reg, _width)                  \
+       {                                                       \
+               .id             = _id,                          \
+               .reg            = _reg,                         \
+               .width          = _width,                       \
+               .div_flags      = 0,                            \
+               .name           = _name,                        \
+               .parent         = _pname,                       \
+       }
+
+#define DIV_F(_id, _name, _pname, _reg, _width, _div_flags)    \
+       {                                                       \
+               .id             = _id,                          \
+               .reg            = _reg,                         \
+               .width          = _width,                       \
+               .div_flags      = _div_flags,                   \
+               .name           = _name,                        \
+               .parent         = _pname,                       \
+       }
+
+struct pistachio_fixed_factor {
+       unsigned int id;
+       unsigned int div;
+       const char *name;
+       const char *parent;
+};
+
+#define FIXED_FACTOR(_id, _name, _pname, _div)                 \
+       {                                                       \
+               .id             = _id,                          \
+               .div            = _div,                         \
+               .name           = _name,                        \
+               .parent         = _pname,                       \
+       }
+
+struct pistachio_clk_provider {
+       struct device_node *node;
+       void __iomem *base;
+       struct clk_onecell_data clk_data;
+};
+
+extern struct pistachio_clk_provider *
+pistachio_clk_alloc_provider(struct device_node *node, unsigned int num_clks);
+extern void pistachio_clk_register_provider(struct pistachio_clk_provider *p);
+
+extern void pistachio_clk_register_gate(struct pistachio_clk_provider *p,
+                                       struct pistachio_gate *gate,
+                                       unsigned int num);
+extern void pistachio_clk_register_mux(struct pistachio_clk_provider *p,
+                                      struct pistachio_mux *mux,
+                                      unsigned int num);
+extern void pistachio_clk_register_div(struct pistachio_clk_provider *p,
+                                      struct pistachio_div *div,
+                                      unsigned int num);
+extern void
+pistachio_clk_register_fixed_factor(struct pistachio_clk_provider *p,
+                                   struct pistachio_fixed_factor *ff,
+                                   unsigned int num);
+
+extern void pistachio_clk_force_enable(struct pistachio_clk_provider *p,
+                                      unsigned int *clk_ids, unsigned int num);
+
+#endif