1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.h b/drivers/clk/renesas/renesas-cpg-mssr.h
new file mode 100644
index 0000000000..c19a466be1
--- /dev/null
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -0,0 +1,117 @@
+/*
+ * Renesas RCar Gen3 CPG MSSR driver
+ *
+ * Copyright (C) 2017-2018 Marek Vasut <marek.vasut@gmail.com>
+ *
+ * Based on the following driver from Linux kernel:
+ * r8a7796 Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2016 Glider bvba
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __DRIVERS_CLK_RENESAS_CPG_MSSR__
+#define __DRIVERS_CLK_RENESAS_CPG_MSSR__
+
+struct cpg_mssr_info {
+	const struct cpg_core_clk	*core_clk;
+	unsigned int			core_clk_size;
+	const struct mssr_mod_clk	*mod_clk;
+	unsigned int			mod_clk_size;
+	const struct mstp_stop_table	*mstp_table;
+	unsigned int			mstp_table_size;
+	const char			*reset_node;
+	const char			*extalr_node;
+	const char			*extal_usb_node;
+	unsigned int			mod_clk_base;
+	unsigned int			clk_extal_id;
+	unsigned int			clk_extalr_id;
+	unsigned int			clk_extal_usb_id;
+	unsigned int			pll0_div;
+	const void			*(*get_pll_config)(const u32 cpg_mode);
+};
+
+/*
+ * Definitions of CPG Core Clocks
+ *
+ * These include:
+ *   - Clock outputs exported to DT
+ *   - External input clocks
+ *   - Internal CPG clocks
+ */
+struct cpg_core_clk {
+	/* Common */
+	const char *name;
+	unsigned int id;
+	unsigned int type;
+	/* Depending on type */
+	unsigned int parent;	/* Core Clocks only */
+	unsigned int div;
+	unsigned int mult;
+	unsigned int offset;
+};
+
+enum clk_types {
+	/* Generic */
+	CLK_TYPE_IN,		/* External Clock Input */
+	CLK_TYPE_FF,		/* Fixed Factor Clock */
+	CLK_TYPE_DIV6P1,	/* DIV6 Clock with 1 parent clock */
+	CLK_TYPE_DIV6_RO,	/* DIV6 Clock read only with extra divisor */
+
+	/* Custom definitions start here */
+	CLK_TYPE_CUSTOM,
+};
+
+#define DEF_TYPE(_name, _id, _type...)	\
+	{ .name = _name, .id = _id, .type = _type }
+#define DEF_BASE(_name, _id, _type, _parent...)	\
+	DEF_TYPE(_name, _id, _type, .parent = _parent)
+
+#define DEF_INPUT(_name, _id) \
+	DEF_TYPE(_name, _id, CLK_TYPE_IN)
+#define DEF_FIXED(_name, _id, _parent, _div, _mult)	\
+	DEF_BASE(_name, _id, CLK_TYPE_FF, _parent, .div = _div, .mult = _mult)
+#define DEF_DIV6P1(_name, _id, _parent, _offset)	\
+	DEF_BASE(_name, _id, CLK_TYPE_DIV6P1, _parent, .offset = _offset)
+#define DEF_DIV6_RO(_name, _id, _parent, _offset, _div)	\
+	DEF_BASE(_name, _id, CLK_TYPE_DIV6_RO, _parent, .offset = _offset, .div = _div, .mult = 1)
+
+/*
+ * Definitions of Module Clocks
+ */
+struct mssr_mod_clk {
+	const char *name;
+	unsigned int id;
+	unsigned int parent;	/* Add MOD_CLK_BASE for Module Clocks */
+};
+
+/* Convert from sparse base-100 to packed index space */
+#define MOD_CLK_PACK(x)	((x) - ((x) / 100) * (100 - 32))
+
+#define MOD_CLK_ID(x)	(MOD_CLK_BASE + MOD_CLK_PACK(x))
+
+#define DEF_MOD(_name, _mod, _parent...)	\
+	{ .name = _name, .id = MOD_CLK_ID(_mod), .parent = _parent }
+
+struct mstp_stop_table {
+	u32	sdis;
+	u32	sen;
+	u32	rdis;
+	u32	ren;
+};
+
+#define TSTR0		0x04
+#define TSTR0_STR0	BIT(0)
+
+bool renesas_clk_is_mod(struct clk *clk);
+int renesas_clk_get_mod(struct clk *clk, struct cpg_mssr_info *info,
+			const struct mssr_mod_clk **mssr);
+int renesas_clk_get_core(struct clk *clk, struct cpg_mssr_info *info,
+			 const struct cpg_core_clk **core);
+int renesas_clk_get_parent(struct clk *clk, struct cpg_mssr_info *info,
+			   struct clk *parent);
+int renesas_clk_endisable(struct clk *clk, void __iomem *base, bool enable);
+int renesas_clk_remove(void __iomem *base, struct cpg_mssr_info *info);
+
+#endif /* __DRIVERS_CLK_RENESAS_CPG_MSSR__ */