A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-26 06:33:19 -04:00
Code Issues Projects Releases Packages Wiki Activity

cpufreq: qcom-cpufreq-hw: Add support to dump EPSS registers

Browse source 
Add support to dump EPSS registers that aid in debugging
CPUFREQ issues.

Change-Id: Iab15b9debf919b3b3f2dd7428fd0bdff6e04ca41
Signed-off-by: Taniya Das <tdas@codeaurora.org>
This commit is contained in:
Taniya Das 2021-01-06 13:25:07 +05:30 • committed by Jagadeesh Kona
commit 58e1e4ef7a
1 changed files with 21 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

28
drivers/cpufreq/qcom-cpufreq-hw-debug.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "cpufreq_hw_debug: %s: " fmt, __func__
@ -17,6 +17,8 @@ enum debug_hw_regs_data {
REG_PERF_STATE,
REG_CYCLE_CNTR,
REG_PSTATE_STATUS,
REG_EPSS_DEBUG_STATUS,
REG_EPSS_DEBUG_SRB,
REG_ARRAY_SIZE,
};
@ -35,32 +37,39 @@ struct cpufreq_register_data {
static struct cpufreq_hwregs *hw_regs;
static const u16 *offsets;
static const u16 cpufreq_qcom_std_data[REG_ARRAY_SIZE] = {
static const u16 cpufreq_qcom_std_data[] = {
[REG_PERF_STATE] = 0x920,
[REG_CYCLE_CNTR] = 0x9c0,
[REG_PSTATE_STATUS] = 0x700,
};
static const u16 cpufreq_qcom_std_epss_data[REG_ARRAY_SIZE] = {
static const u16 cpufreq_qcom_std_epss_data[] = {
[REG_PERF_STATE] = 0x320,
[REG_CYCLE_CNTR] = 0x3c4,
[REG_PSTATE_STATUS] = 0x020,
[REG_EPSS_DEBUG_STATUS] = 0x01c,
[REG_EPSS_DEBUG_SRB] = 0x0bc,
};
static int print_cpufreq_hw_debug_regs(struct seq_file *s, void *unused)
{
int i, j;
int i, j, size = ARRAY_SIZE(cpufreq_qcom_std_data);
u32 regval;
static struct cpufreq_register_data data[] = {
{"PERF_STATE_DESIRED", REG_PERF_STATE},
{"CYCLE_CNTR_VAL", REG_CYCLE_CNTR},
{"PSTATE_STATUS", REG_PSTATE_STATUS},
{"EPSS_DEBUG_STATUS", REG_EPSS_DEBUG_STATUS},
{"EPSS_DEBUG_SRB", REG_EPSS_DEBUG_SRB},
};
if (offsets == cpufreq_qcom_std_epss_data)
size = ARRAY_SIZE(cpufreq_qcom_std_epss_data);
for (i = 0; i < hw_regs->domain_cnt; i++) {
seq_printf(s, "FREQUENCY DOMAIN %d\n", i);
for (j = 0; j < ARRAY_SIZE(data); j++) {
for (j = 0; j < size; j++) {
regval = readl_relaxed(hw_regs->base[i] +
offsets[data[j].offset]);
seq_printf(s, "%25s: 0x%.8x\n", data[j].name, regval);
@ -85,18 +94,23 @@ static const struct file_operations cpufreq_debug_register_fops = {
static int cpufreq_panic_callback(struct notifier_block *nfb,
unsigned long event, void *unused)
{
int i, j;
int i, j, size = ARRAY_SIZE(cpufreq_qcom_std_data);
u32 regval;
static struct cpufreq_register_data data[] = {
{"PERF_STATE_DESIRED", REG_PERF_STATE},
{"CYCLE_CNTR_VAL", REG_CYCLE_CNTR},
{"PSTATE_STATUS", REG_PSTATE_STATUS},
{"EPSS_DEBUG_STATUS", REG_EPSS_DEBUG_STATUS},
{"EPSS_DEBUG_SRB", REG_EPSS_DEBUG_SRB},
};
if (offsets == cpufreq_qcom_std_epss_data)
size = ARRAY_SIZE(cpufreq_qcom_std_epss_data);
for (i = 0; i < hw_regs->domain_cnt; i++) {
pr_err("FREQUENCY DOMAIN %d\n", i);
for (j = 0; j < ARRAY_SIZE(data); j++) {
for (j = 0; j < size; j++) {
regval = readl_relaxed(hw_regs->base[i] +
offsets[data[j].offset]);
pr_err("%25s: 0x%.8x\n", data[j].name, regval);