Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 193 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..80c5b46292
--- /dev/null
+++ b/drivers/clk/renesas/renesas-cpg-mssr.h
@@ -0,0 +1,193 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Renesas Clock Pulse Generator / Module Standby and Software Reset
+ *
+ * Copyright (C) 2015 Glider bvba
+ */
+
+#ifndef __CLK_RENESAS_CPG_MSSR_H__
+#define __CLK_RENESAS_CPG_MSSR_H__
+
+    /*
+     * 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 */
+	CLK_TYPE_FR,		/* Fixed Rate Clock */
+
+	/* 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)
+#define DEF_RATE(_name, _id, _rate)	\
+	DEF_TYPE(_name, _id, CLK_TYPE_FR, .mult = _rate)
+
+    /*
+     * 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 }
+
+/* Convert from sparse base-10 to packed index space */
+#define MOD_CLK_PACK_10(x)	((x / 10) * 32 + (x % 10))
+
+#define MOD_CLK_ID_10(x)	(MOD_CLK_BASE + MOD_CLK_PACK_10(x))
+
+#define DEF_MOD_STB(_name, _mod, _parent...)	\
+	{ .name = _name, .id = MOD_CLK_ID_10(_mod), .parent = _parent }
+
+struct device_node;
+
+enum clk_reg_layout {
+	CLK_REG_LAYOUT_RCAR_GEN2_AND_GEN3 = 0,
+	CLK_REG_LAYOUT_RZ_A,
+	CLK_REG_LAYOUT_RCAR_GEN4,
+};
+
+    /**
+     * SoC-specific CPG/MSSR Description
+     *
+     * @early_core_clks: Array of Early Core Clock definitions
+     * @num_early_core_clks: Number of entries in early_core_clks[]
+     * @early_mod_clks: Array of Early Module Clock definitions
+     * @num_early_mod_clks: Number of entries in early_mod_clks[]
+     *
+     * @core_clks: Array of Core Clock definitions
+     * @num_core_clks: Number of entries in core_clks[]
+     * @last_dt_core_clk: ID of the last Core Clock exported to DT
+     * @num_total_core_clks: Total number of Core Clocks (exported + internal)
+     *
+     * @mod_clks: Array of Module Clock definitions
+     * @num_mod_clks: Number of entries in mod_clks[]
+     * @num_hw_mod_clks: Number of Module Clocks supported by the hardware
+     *
+     * @crit_mod_clks: Array with Module Clock IDs of critical clocks that
+     *                 should not be disabled without a knowledgeable driver
+     * @num_crit_mod_clks: Number of entries in crit_mod_clks[]
+     * @reg_layout: CPG/MSSR register layout from enum clk_reg_layout
+     *
+     * @core_pm_clks: Array with IDs of Core Clocks that are suitable for Power
+     *                Management, in addition to Module Clocks
+     * @num_core_pm_clks: Number of entries in core_pm_clks[]
+     *
+     * @init: Optional callback to perform SoC-specific initialization
+     * @cpg_clk_register: Optional callback to handle special Core Clock types
+     */
+
+struct cpg_mssr_info {
+	/* Early Clocks */
+	const struct cpg_core_clk *early_core_clks;
+	unsigned int num_early_core_clks;
+	const struct mssr_mod_clk *early_mod_clks;
+	unsigned int num_early_mod_clks;
+
+	/* Core Clocks */
+	const struct cpg_core_clk *core_clks;
+	unsigned int num_core_clks;
+	unsigned int last_dt_core_clk;
+	unsigned int num_total_core_clks;
+	enum clk_reg_layout reg_layout;
+
+	/* Module Clocks */
+	const struct mssr_mod_clk *mod_clks;
+	unsigned int num_mod_clks;
+	unsigned int num_hw_mod_clks;
+
+	/* Critical Module Clocks that should not be disabled */
+	const unsigned int *crit_mod_clks;
+	unsigned int num_crit_mod_clks;
+
+	/* Core Clocks suitable for PM, in addition to the Module Clocks */
+	const unsigned int *core_pm_clks;
+	unsigned int num_core_pm_clks;
+
+	/* Callbacks */
+	int (*init)(struct device *dev);
+	struct clk *(*cpg_clk_register)(struct device *dev,
+					const struct cpg_core_clk *core,
+					const struct cpg_mssr_info *info,
+					struct clk **clks, void __iomem *base,
+					struct raw_notifier_head *notifiers);
+};
+
+extern const struct cpg_mssr_info r7s9210_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7742_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7743_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7745_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77470_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a774a1_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a774b1_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a774c0_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a774e1_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7790_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7791_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7792_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7794_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7795_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a7796_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77965_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77970_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77980_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77990_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a77995_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a779a0_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a779f0_cpg_mssr_info;
+extern const struct cpg_mssr_info r8a779g0_cpg_mssr_info;
+
+void __init cpg_mssr_early_init(struct device_node *np,
+				const struct cpg_mssr_info *info);
+
+    /*
+     * Helpers for fixing up clock tables depending on SoC revision
+     */
+extern void mssr_mod_nullify(struct mssr_mod_clk *mod_clks,
+			     unsigned int num_mod_clks,
+			     const unsigned int *clks, unsigned int n);
+#endif