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vc.h
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1 /*
2  * OMAP3/4 Voltage Controller (VC) structure and macro definitions
3  *
4  * Copyright (C) 2007, 2010 Texas Instruments, Inc.
5  * Rajendra Nayak <[email protected]>
6  * Lesly A M <[email protected]>
7  * Thara Gopinath <[email protected]>
8  *
9  * Copyright (C) 2008, 2011 Nokia Corporation
10  * Kalle Jokiniemi
11  * Paul Walmsley
12  *
13  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License version
15  * 2 as published by the Free Software Foundation.
16  */
17 #ifndef __ARCH_ARM_MACH_OMAP2_VC_H
18 #define __ARCH_ARM_MACH_OMAP2_VC_H
19 
20 #include <linux/kernel.h>
21 
22 struct voltagedomain;
23 
43 struct omap_vc_common {
44  u32 cmd_on_mask;
45  u32 valid;
46  u8 bypass_val_reg;
47  u8 data_shift;
48  u8 slaveaddr_shift;
49  u8 regaddr_shift;
50  u8 cmd_on_shift;
51  u8 cmd_onlp_shift;
52  u8 cmd_ret_shift;
53  u8 cmd_off_shift;
54  u8 i2c_cfg_reg;
55  u8 i2c_cfg_hsen_mask;
56  u8 i2c_mcode_mask;
57 };
58 
59 /* omap_vc_channel.flags values */
60 #define OMAP_VC_CHANNEL_DEFAULT BIT(0)
61 #define OMAP_VC_CHANNEL_CFG_MUTANT BIT(1)
62 
84 struct omap_vc_channel {
85  /* channel state */
86  u16 i2c_slave_addr;
87  u16 volt_reg_addr;
88  u16 cmd_reg_addr;
89  u16 setup_time;
90  u8 cfg_channel;
91  bool i2c_high_speed;
92 
93  /* register access data */
94  const struct omap_vc_common *common;
95  u32 smps_sa_mask;
96  u32 smps_volra_mask;
97  u32 smps_cmdra_mask;
98  u8 cmdval_reg;
99  u8 smps_sa_reg;
100  u8 smps_volra_reg;
101  u8 smps_cmdra_reg;
102  u8 cfg_channel_reg;
103  u8 cfg_channel_sa_shift;
104  u8 flags;
105 };
106 
107 extern struct omap_vc_channel omap3_vc_mpu;
108 extern struct omap_vc_channel omap3_vc_core;
109 
110 extern struct omap_vc_channel omap4_vc_mpu;
111 extern struct omap_vc_channel omap4_vc_iva;
112 extern struct omap_vc_channel omap4_vc_core;
113 
114 void omap_vc_init_channel(struct voltagedomain *voltdm);
115 int omap_vc_pre_scale(struct voltagedomain *voltdm,
116  unsigned long target_volt,
117  u8 *target_vsel, u8 *current_vsel);
118 void omap_vc_post_scale(struct voltagedomain *voltdm,
119  unsigned long target_volt,
120  u8 target_vsel, u8 current_vsel);
121 int omap_vc_bypass_scale(struct voltagedomain *voltdm,
122  unsigned long target_volt);
123 
124 #endif
125 
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