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 * @smps_cmdra_reg: Offset of PRM_VC_SMPS_CMD_RA reg from PRM start
31 * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
32 * @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register
33 * @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register
34 * @regaddr_shift: REGADDR field shift in PRM_VC_BYPASS_VAL register
35 * @cmd_on_shift: ON field shift in PRM_VC_CMD_VAL_* register
36 * @cmd_onlp_shift: ONLP field shift in PRM_VC_CMD_VAL_* register
37 * @cmd_ret_shift: RET field shift in PRM_VC_CMD_VAL_* register
38 * @cmd_off_shift: OFF field shift in PRM_VC_CMD_VAL_* register
40 * XXX One of cmd_on_mask and cmd_on_shift are not needed
41 * XXX VALID should probably be a shift, not a mask
43 struct omap_vc_common {
60 /* omap_vc_channel.flags values */
61 #define OMAP_VC_CHANNEL_DEFAULT BIT(0)
64 * struct omap_vc_channel - VC per-instance data
65 * @i2c_slave_addr: I2C slave address of PMIC for this VC channel
66 * @volt_reg_addr: voltage configuration register address
67 * @cmd_reg_addr: command configuration register address
68 * @setup_time: setup time (in sys_clk cycles) of regulator for this channel
69 * @common: pointer to VC common data for this platform
70 * @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register
71 * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register
72 * @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register
73 * @cmdval_reg: register for on/ret/off voltage level values for this channel
74 * @flags: VC channel-specific flags (optional)
76 struct omap_vc_channel {
84 /* register access data */
85 const struct omap_vc_common *common;
90 u8 cfg_channel_sa_shift;
94 extern struct omap_vc_channel omap3_vc_mpu;
95 extern struct omap_vc_channel omap3_vc_core;
97 extern struct omap_vc_channel omap4_vc_mpu;
98 extern struct omap_vc_channel omap4_vc_iva;
99 extern struct omap_vc_channel omap4_vc_core;
101 void omap_vc_init_channel(struct voltagedomain *voltdm);
102 int omap_vc_pre_scale(struct voltagedomain *voltdm,
103 unsigned long target_volt,
104 u8 *target_vsel, u8 *current_vsel);
105 void omap_vc_post_scale(struct voltagedomain *voltdm,
106 unsigned long target_volt,
107 u8 target_vsel, u8 current_vsel);
108 int omap_vc_bypass_scale(struct voltagedomain *voltdm,
109 unsigned long target_volt);