1 files changed, 81 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
new file mode 100644
index 0000000000..14beb59e5f
--- /dev/null
+++ b/arch/arm/mach-omap2/cm.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * OMAP2+ Clock Management prototypes
+ *
+ * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009 Nokia Corporation
+ *
+ * Written by Paul Walmsley
+ */
+#ifndef __ARCH_ASM_MACH_OMAP2_CM_H
+#define __ARCH_ASM_MACH_OMAP2_CM_H
+
+/*
+ * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
+ * PRCM to request that a module exit the inactive state in the case of
+ * OMAP2 & 3.
+ * In the case of OMAP4 this is the max duration in microseconds for the
+ * module to reach the functionnal state from an inactive state.
+ */
+#define MAX_MODULE_READY_TIME		2000
+
+# ifndef __ASSEMBLER__
+#include <linux/clk/ti.h>
+
+#include "prcm-common.h"
+
+extern struct omap_domain_base cm_base;
+extern struct omap_domain_base cm2_base;
+# endif
+
+/*
+ * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
+ * the PRCM to request that a module enter the inactive state in the
+ * case of OMAP2 & 3.  In the case of OMAP4 this is the max duration
+ * in microseconds for the module to reach the inactive state from
+ * a functional state.
+ * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
+ * kernel init.
+ */
+#define MAX_MODULE_DISABLE_TIME		5000
+
+# ifndef __ASSEMBLER__
+
+/**
+ * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
+ * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
+ * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
+ * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
+ * @module_enable: ptr to the SoC CM-specific module_enable impl
+ * @module_disable: ptr to the SoC CM-specific module_disable impl
+ * @xlate_clkctrl: ptr to the SoC CM-specific clkctrl xlate addr impl
+ */
+struct cm_ll_data {
+	int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
+				u8 *idlest_reg_id);
+	int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
+				 u8 idlest_shift);
+	int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
+				u8 idlest_shift);
+	void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
+	void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs);
+	u32 (*xlate_clkctrl)(u8 part, u16 inst, u16 clkctrl_offs);
+};
+
+extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
+			       u8 *idlest_reg_id);
+int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
+			      u8 idlest_shift);
+int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
+			     u8 idlest_shift);
+int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
+int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);
+u32 omap_cm_xlate_clkctrl(u8 part, u16 inst, u16 clkctrl_offs);
+extern int cm_register(const struct cm_ll_data *cld);
+extern int cm_unregister(const struct cm_ll_data *cld);
+int omap_cm_init(void);
+int omap2_cm_base_init(void);
+
+# endif
+
+#endif