2 * OMAP3/4 Voltage Controller (VC) structure and macro definitions
4 * Copyright (C) 2007, 2010 Texas Instruments, Inc.
5 * Rajendra Nayak <rnayak@ti.com>
6 * Lesly A M <x0080970@ti.com>
7 * Thara Gopinath <thara@ti.com>
9 * Copyright (C) 2008, 2011 Nokia Corporation
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.
17 #ifndef __ARCH_ARM_MACH_OMAP2_VC_H
18 #define __ARCH_ARM_MACH_OMAP2_VC_H
20 #include <linux/kernel.h>
25 * struct omap_vc_common - per-VC register/bitfield data
26 * @cmd_on_mask: ON bitmask in PRM_VC_CMD_VAL* register
27 * @valid: VALID bitmask in PRM_VC_BYPASS_VAL register
28 * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start
29 * @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start
30 * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
31 * @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register
32 * @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register
33 * @regaddr_shift: REGADDR field shift in PRM_VC_BYPASS_VAL register
34 * @cmd_on_shift: ON field shift in PRM_VC_CMD_VAL_* register
35 * @cmd_onlp_shift: ONLP field shift in PRM_VC_CMD_VAL_* register
36 * @cmd_ret_shift: RET field shift in PRM_VC_CMD_VAL_* register
37 * @cmd_off_shift: OFF field shift in PRM_VC_CMD_VAL_* register
39 * XXX One of cmd_on_mask and cmd_on_shift are not needed
40 * XXX VALID should probably be a shift, not a mask
42 struct omap_vc_common {
58 * struct omap_vc_channel - VC per-instance data
59 * @common: pointer to VC common data for this platform
60 * @smps_sa_mask: SA* bitmask in the PRM_VC_SMPS_SA register
61 * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register
62 * @smps_sa_shift: SA* field shift in the PRM_VC_SMPS_SA register
63 * @smps_volra_shift: VOLRA* field shift in the PRM_VC_VOL_RA register
65 * XXX It is not necessary to have both a *_mask and a *_shift -
68 struct omap_vc_channel {
69 const struct omap_vc_common *common;
77 extern struct omap_vc_channel omap3_vc_mpu;
78 extern struct omap_vc_channel omap3_vc_core;
80 extern struct omap_vc_channel omap4_vc_mpu;
81 extern struct omap_vc_channel omap4_vc_iva;
82 extern struct omap_vc_channel omap4_vc_core;
84 void omap_vc_init_channel(struct voltagedomain *voltdm);
85 int omap_vc_pre_scale(struct voltagedomain *voltdm,
86 unsigned long target_volt,
87 u8 *target_vsel, u8 *current_vsel);
88 void omap_vc_post_scale(struct voltagedomain *voltdm,
89 unsigned long target_volt,
90 u8 target_vsel, u8 current_vsel);
91 int omap_vc_bypass_scale(struct voltagedomain *voltdm,
92 unsigned long target_volt);