vc.h 3.3 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
/*
 * OMAP3/4 Voltage Controller (VC) structure and macro definitions
 *
 * Copyright (C) 2007, 2010 Texas Instruments, Inc.
 * Rajendra Nayak <rnayak@ti.com>
 * Lesly A M <x0080970@ti.com>
 * Thara Gopinath <thara@ti.com>
 *
 * Copyright (C) 2008, 2011 Nokia Corporation
 * Kalle Jokiniemi
 * Paul Walmsley
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 */
#ifndef __ARCH_ARM_MACH_OMAP2_VC_H
#define __ARCH_ARM_MACH_OMAP2_VC_H

#include <linux/kernel.h>

22 23
struct voltagedomain;

24
/**
25
 * struct omap_vc_common - per-VC register/bitfield data
26 27 28 29
 * @cmd_on_mask: ON bitmask in PRM_VC_CMD_VAL* register
 * @valid: VALID bitmask in PRM_VC_BYPASS_VAL register
 * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start
 * @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 32 33 34 35 36 37 38 39 40 41 42
 * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
 * @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register
 * @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register
 * @regaddr_shift: REGADDR field shift in PRM_VC_BYPASS_VAL register
 * @cmd_on_shift: ON field shift in PRM_VC_CMD_VAL_* register
 * @cmd_onlp_shift: ONLP field shift in PRM_VC_CMD_VAL_* register
 * @cmd_ret_shift: RET field shift in PRM_VC_CMD_VAL_* register
 * @cmd_off_shift: OFF field shift in PRM_VC_CMD_VAL_* register
 *
 * XXX One of cmd_on_mask and cmd_on_shift are not needed
 * XXX VALID should probably be a shift, not a mask
 */
43
struct omap_vc_common {
44 45 46 47
	u32 cmd_on_mask;
	u32 valid;
	u8 smps_sa_reg;
	u8 smps_volra_reg;
48
	u8 smps_cmdra_reg;
49 50 51 52 53 54 55 56 57 58 59
	u8 bypass_val_reg;
	u8 data_shift;
	u8 slaveaddr_shift;
	u8 regaddr_shift;
	u8 cmd_on_shift;
	u8 cmd_onlp_shift;
	u8 cmd_ret_shift;
	u8 cmd_off_shift;
};

/**
60
 * struct omap_vc_channel - VC per-instance data
61
 * @i2c_slave_addr: I2C slave address of PMIC for this VC channel
62 63
 * @volt_reg_addr: voltage configuration register address
 * @cmd_reg_addr: command configuration register address
64
 * @common: pointer to VC common data for this platform
65
 * @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register
66
 * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register
67 68
 * @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register
 * @cmdval_reg: register for on/ret/off voltage level values for this channel
69
 */
70
struct omap_vc_channel {
71 72
	/* channel state */
	u16 i2c_slave_addr;
73 74
	u16 volt_reg_addr;
	u16 cmd_reg_addr;
75 76

	/* register access data */
77
	const struct omap_vc_common *common;
78 79
	u32 smps_sa_mask;
	u32 smps_volra_mask;
80
	u32 smps_cmdra_mask;
81 82 83
	u8 cmdval_reg;
};

84 85
extern struct omap_vc_channel omap3_vc_mpu;
extern struct omap_vc_channel omap3_vc_core;
86

87 88 89
extern struct omap_vc_channel omap4_vc_mpu;
extern struct omap_vc_channel omap4_vc_iva;
extern struct omap_vc_channel omap4_vc_core;
90

91 92 93 94 95 96 97
void omap_vc_init_channel(struct voltagedomain *voltdm);
int omap_vc_pre_scale(struct voltagedomain *voltdm,
		      unsigned long target_volt,
		      u8 *target_vsel, u8 *current_vsel);
void omap_vc_post_scale(struct voltagedomain *voltdm,
			unsigned long target_volt,
			u8 target_vsel, u8 current_vsel);
98 99
int omap_vc_bypass_scale(struct voltagedomain *voltdm,
			 unsigned long target_volt);
100

101 102
#endif