+++ /dev/null
-/* arch/arm/mach-msm/vreg.c
- *
- * Copyright (C) 2008 Google, Inc.
- * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
- * Author: Brian Swetland <swetland@google.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/debugfs.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <mach/vreg.h>
-
-#include "proc_comm.h"
-
-struct vreg {
- const char *name;
- unsigned id;
- int status;
- unsigned refcnt;
-};
-
-#define VREG(_name, _id, _status, _refcnt) \
- { .name = _name, .id = _id, .status = _status, .refcnt = _refcnt }
-
-static struct vreg vregs[] = {
- VREG("msma", 0, 0, 0),
- VREG("msmp", 1, 0, 0),
- VREG("msme1", 2, 0, 0),
- VREG("msmc1", 3, 0, 0),
- VREG("msmc2", 4, 0, 0),
- VREG("gp3", 5, 0, 0),
- VREG("msme2", 6, 0, 0),
- VREG("gp4", 7, 0, 0),
- VREG("gp1", 8, 0, 0),
- VREG("tcxo", 9, 0, 0),
- VREG("pa", 10, 0, 0),
- VREG("rftx", 11, 0, 0),
- VREG("rfrx1", 12, 0, 0),
- VREG("rfrx2", 13, 0, 0),
- VREG("synt", 14, 0, 0),
- VREG("wlan", 15, 0, 0),
- VREG("usb", 16, 0, 0),
- VREG("boost", 17, 0, 0),
- VREG("mmc", 18, 0, 0),
- VREG("ruim", 19, 0, 0),
- VREG("msmc0", 20, 0, 0),
- VREG("gp2", 21, 0, 0),
- VREG("gp5", 22, 0, 0),
- VREG("gp6", 23, 0, 0),
- VREG("rf", 24, 0, 0),
- VREG("rf_vco", 26, 0, 0),
- VREG("mpll", 27, 0, 0),
- VREG("s2", 28, 0, 0),
- VREG("s3", 29, 0, 0),
- VREG("rfubm", 30, 0, 0),
- VREG("ncp", 31, 0, 0),
- VREG("gp7", 32, 0, 0),
- VREG("gp8", 33, 0, 0),
- VREG("gp9", 34, 0, 0),
- VREG("gp10", 35, 0, 0),
- VREG("gp11", 36, 0, 0),
- VREG("gp12", 37, 0, 0),
- VREG("gp13", 38, 0, 0),
- VREG("gp14", 39, 0, 0),
- VREG("gp15", 40, 0, 0),
- VREG("gp16", 41, 0, 0),
- VREG("gp17", 42, 0, 0),
- VREG("s4", 43, 0, 0),
- VREG("usb2", 44, 0, 0),
- VREG("wlan2", 45, 0, 0),
- VREG("xo_out", 46, 0, 0),
- VREG("lvsw0", 47, 0, 0),
- VREG("lvsw1", 48, 0, 0),
-};
-
-struct vreg *vreg_get(struct device *dev, const char *id)
-{
- int n;
- for (n = 0; n < ARRAY_SIZE(vregs); n++) {
- if (!strcmp(vregs[n].name, id))
- return vregs + n;
- }
- return ERR_PTR(-ENOENT);
-}
-
-void vreg_put(struct vreg *vreg)
-{
-}
-
-int vreg_enable(struct vreg *vreg)
-{
- unsigned id = vreg->id;
- unsigned enable = 1;
-
- if (vreg->refcnt == 0)
- vreg->status = msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
-
- if ((vreg->refcnt < UINT_MAX) && (!vreg->status))
- vreg->refcnt++;
-
- return vreg->status;
-}
-
-int vreg_disable(struct vreg *vreg)
-{
- unsigned id = vreg->id;
- unsigned enable = 0;
-
- if (!vreg->refcnt)
- return 0;
-
- if (vreg->refcnt == 1)
- vreg->status = msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
-
- if (!vreg->status)
- vreg->refcnt--;
-
- return vreg->status;
-}
-
-int vreg_set_level(struct vreg *vreg, unsigned mv)
-{
- unsigned id = vreg->id;
-
- vreg->status = msm_proc_comm(PCOM_VREG_SET_LEVEL, &id, &mv);
- return vreg->status;
-}
-
-#if defined(CONFIG_DEBUG_FS)
-
-static int vreg_debug_set(void *data, u64 val)
-{
- struct vreg *vreg = data;
- switch (val) {
- case 0:
- vreg_disable(vreg);
- break;
- case 1:
- vreg_enable(vreg);
- break;
- default:
- vreg_set_level(vreg, val);
- break;
- }
- return 0;
-}
-
-static int vreg_debug_get(void *data, u64 *val)
-{
- struct vreg *vreg = data;
-
- if (!vreg->status)
- *val = 0;
- else
- *val = 1;
-
- return 0;
-}
-
-static int vreg_debug_count_set(void *data, u64 val)
-{
- struct vreg *vreg = data;
- if (val > UINT_MAX)
- val = UINT_MAX;
- vreg->refcnt = val;
- return 0;
-}
-
-static int vreg_debug_count_get(void *data, u64 *val)
-{
- struct vreg *vreg = data;
-
- *val = vreg->refcnt;
-
- return 0;
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(vreg_fops, vreg_debug_get, vreg_debug_set, "%llu\n");
-DEFINE_SIMPLE_ATTRIBUTE(vreg_count_fops, vreg_debug_count_get,
- vreg_debug_count_set, "%llu\n");
-
-static int __init vreg_debug_init(void)
-{
- struct dentry *dent;
- int n;
- char name[32];
- const char *refcnt_name = "_refcnt";
-
- dent = debugfs_create_dir("vreg", 0);
- if (IS_ERR(dent))
- return 0;
-
- for (n = 0; n < ARRAY_SIZE(vregs); n++) {
- (void) debugfs_create_file(vregs[n].name, 0644,
- dent, vregs + n, &vreg_fops);
-
- strlcpy(name, vregs[n].name, sizeof(name));
- strlcat(name, refcnt_name, sizeof(name));
- (void) debugfs_create_file(name, 0644,
- dent, vregs + n, &vreg_count_fops);
- }
-
- return 0;
-}
-
-device_initcall(vreg_debug_init);
-#endif
projects / firefly-linux-kernel-4.4.55.git / blobdiff