1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * OMAP2+ Clock Management prototypes
4 *
5 * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
6 * Copyright (C) 2007-2009 Nokia Corporation
7 *
8 * Written by Paul Walmsley
9 */
10 #ifndef __ARCH_ASM_MACH_OMAP2_CM_H
11 #define __ARCH_ASM_MACH_OMAP2_CM_H
12
13 /*
14 * MAX_MODULE_READY_TIME: max duration in microseconds to wait for the
15 * PRCM to request that a module exit the inactive state in the case of
16 * OMAP2 & 3.
17 * In the case of OMAP4 this is the max duration in microseconds for the
18 * module to reach the functionnal state from an inactive state.
19 */
20 #define MAX_MODULE_READY_TIME 2000
21
22 # ifndef __ASSEMBLER__
23 #include <linux/clk/ti.h>
24
25 #include "prcm-common.h"
26
27 extern struct omap_domain_base cm_base;
28 extern struct omap_domain_base cm2_base;
29 extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
30 # endif
31
32 /*
33 * MAX_MODULE_DISABLE_TIME: max duration in microseconds to wait for
34 * the PRCM to request that a module enter the inactive state in the
35 * case of OMAP2 & 3. In the case of OMAP4 this is the max duration
36 * in microseconds for the module to reach the inactive state from
37 * a functional state.
38 * XXX FSUSB on OMAP4430 takes ~4ms to idle after reset during
39 * kernel init.
40 */
41 #define MAX_MODULE_DISABLE_TIME 5000
42
43 # ifndef __ASSEMBLER__
44
45 /**
46 * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
47 * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
48 * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
49 * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
50 * @module_enable: ptr to the SoC CM-specific module_enable impl
51 * @module_disable: ptr to the SoC CM-specific module_disable impl
52 * @xlate_clkctrl: ptr to the SoC CM-specific clkctrl xlate addr impl
53 */
54 struct cm_ll_data {
55 int (*split_idlest_reg)(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
56 u8 *idlest_reg_id);
57 int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
58 u8 idlest_shift);
59 int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
60 u8 idlest_shift);
61 void (*module_enable)(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
62 void (*module_disable)(u8 part, u16 inst, u16 clkctrl_offs);
63 u32 (*xlate_clkctrl)(u8 part, u16 inst, u16 clkctrl_offs);
64 };
65
66 extern int cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, s16 *prcm_inst,
67 u8 *idlest_reg_id);
68 int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
69 u8 idlest_shift);
70 int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
71 u8 idlest_shift);
72 int omap_cm_module_enable(u8 mode, u8 part, u16 inst, u16 clkctrl_offs);
73 int omap_cm_module_disable(u8 part, u16 inst, u16 clkctrl_offs);
74 u32 omap_cm_xlate_clkctrl(u8 part, u16 inst, u16 clkctrl_offs);
75 extern int cm_register(const struct cm_ll_data *cld);
76 extern int cm_unregister(const struct cm_ll_data *cld);
77 int omap_cm_init(void);
78 int omap2_cm_base_init(void);
79
80 # endif
81
82 #endif