tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
[ARM] msm: vreg interface to msm7k pmic
The baseband cpu owns the pmic, so voltage regulator control is only
available via a relatively limited interface through the proc_comm
transport.
Signed-off-by: Brian Swetland <swetland@google.com>
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arch/arm/mach-msm/Makefile
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arch/arm/mach-msm/Makefile
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arch/arm/mach-msm/include/mach/vreg.h
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arch/arm/mach-msm/include/mach/vreg.h
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/* linux/include/asm-arm/arch-msm/vreg.h
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*
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* Copyright (C) 2008 Google, Inc.
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* Author: Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __ARCH_ARM_MACH_MSM_VREG_H
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#define __ARCH_ARM_MACH_MSM_VREG_H
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struct vreg;
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struct vreg *vreg_get(struct device *dev, const char *id);
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void vreg_put(struct vreg *vreg);
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int vreg_enable(struct vreg *vreg);
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void vreg_disable(struct vreg *vreg);
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int vreg_set_level(struct vreg *vreg, unsigned mv);
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#endif
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arch/arm/mach-msm/vreg.c
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arch/arm/mach-msm/vreg.c
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/* arch/arm/mach-msm/vreg.c
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*
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* Copyright (C) 2008 Google, Inc.
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* Author: Brian Swetland <swetland@google.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/debugfs.h>
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#include <mach/vreg.h>
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#include "proc_comm.h"
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struct vreg {
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const char *name;
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unsigned id;
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};
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#define VREG(_name, _id) { .name = _name, .id = _id, }
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static struct vreg vregs[] = {
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VREG("msma", 0),
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VREG("msmp", 1),
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VREG("msme1", 2),
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VREG("msmc1", 3),
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VREG("msmc2", 4),
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VREG("gp3", 5),
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VREG("msme2", 6),
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VREG("gp4", 7),
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VREG("gp1", 8),
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VREG("tcxo", 9),
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VREG("pa", 10),
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VREG("rftx", 11),
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VREG("rfrx1", 12),
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VREG("rfrx2", 13),
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VREG("synt", 14),
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VREG("wlan", 15),
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VREG("usb", 16),
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VREG("boost", 17),
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VREG("mmc", 18),
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VREG("ruim", 19),
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VREG("msmc0", 20),
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VREG("gp2", 21),
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VREG("gp5", 22),
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VREG("gp6", 23),
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VREG("rf", 24),
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VREG("rf_vco", 26),
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VREG("mpll", 27),
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VREG("s2", 28),
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VREG("s3", 29),
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VREG("rfubm", 30),
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VREG("ncp", 31),
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};
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struct vreg *vreg_get(struct device *dev, const char *id)
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{
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int n;
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for (n = 0; n < ARRAY_SIZE(vregs); n++) {
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if (!strcmp(vregs[n].name, id))
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return vregs + n;
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}
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return 0;
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}
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void vreg_put(struct vreg *vreg)
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{
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}
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int vreg_enable(struct vreg *vreg)
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{
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unsigned id = vreg->id;
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unsigned enable = 1;
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return msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
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}
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void vreg_disable(struct vreg *vreg)
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{
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unsigned id = vreg->id;
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unsigned enable = 0;
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msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
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}
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int vreg_set_level(struct vreg *vreg, unsigned mv)
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{
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unsigned id = vreg->id;
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return msm_proc_comm(PCOM_VREG_SET_LEVEL, &id, &mv);
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}
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#if defined(CONFIG_DEBUG_FS)
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static int vreg_debug_set(void *data, u64 val)
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{
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struct vreg *vreg = data;
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switch (val) {
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case 0:
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vreg_disable(vreg);
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break;
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case 1:
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vreg_enable(vreg);
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break;
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default:
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vreg_set_level(vreg, val);
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break;
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}
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return 0;
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}
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static int vreg_debug_get(void *data, u64 *val)
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{
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return -ENOSYS;
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}
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DEFINE_SIMPLE_ATTRIBUTE(vreg_fops, vreg_debug_get, vreg_debug_set, "%llu\n");
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static int __init vreg_debug_init(void)
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{
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struct dentry *dent;
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int n;
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dent = debugfs_create_dir("vreg", 0);
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if (IS_ERR(dent))
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return 0;
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for (n = 0; n < ARRAY_SIZE(vregs); n++)
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(void) debugfs_create_file(vregs[n].name, 0644,
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dent, vregs + n, &vreg_fops);
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return 0;
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}
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device_initcall(vreg_debug_init);
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#endif