8479eb8208
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* CPU frequency scaling for DaVinci
|
|
*
|
|
* Copyright (C) 2009 Texas Instruments Incorporated - https://www.ti.com/
|
|
*
|
|
* Based on linux/arch/arm/plat-omap/cpu-omap.c. Original Copyright follows:
|
|
*
|
|
* Copyright (C) 2005 Nokia Corporation
|
|
* Written by Tony Lindgren <tony@atomide.com>
|
|
*
|
|
* Based on cpu-sa1110.c, Copyright (C) 2001 Russell King
|
|
*
|
|
* Copyright (C) 2007-2008 Texas Instruments, Inc.
|
|
* Updated to support OMAP3
|
|
* Rajendra Nayak <rnayak@ti.com>
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/cpufreq.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/platform_data/davinci-cpufreq.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/export.h>
|
|
|
|
struct davinci_cpufreq {
|
|
struct device *dev;
|
|
struct clk *armclk;
|
|
struct clk *asyncclk;
|
|
unsigned long asyncrate;
|
|
};
|
|
static struct davinci_cpufreq cpufreq;
|
|
|
|
static int davinci_target(struct cpufreq_policy *policy, unsigned int idx)
|
|
{
|
|
struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
|
|
struct clk *armclk = cpufreq.armclk;
|
|
unsigned int old_freq, new_freq;
|
|
int ret = 0;
|
|
|
|
old_freq = policy->cur;
|
|
new_freq = pdata->freq_table[idx].frequency;
|
|
|
|
/* if moving to higher frequency, up the voltage beforehand */
|
|
if (pdata->set_voltage && new_freq > old_freq) {
|
|
ret = pdata->set_voltage(idx);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = clk_set_rate(armclk, new_freq * 1000);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (cpufreq.asyncclk) {
|
|
ret = clk_set_rate(cpufreq.asyncclk, cpufreq.asyncrate);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
/* if moving to lower freq, lower the voltage after lowering freq */
|
|
if (pdata->set_voltage && new_freq < old_freq)
|
|
pdata->set_voltage(idx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int davinci_cpu_init(struct cpufreq_policy *policy)
|
|
{
|
|
int result = 0;
|
|
struct davinci_cpufreq_config *pdata = cpufreq.dev->platform_data;
|
|
struct cpufreq_frequency_table *freq_table = pdata->freq_table;
|
|
|
|
if (policy->cpu != 0)
|
|
return -EINVAL;
|
|
|
|
/* Finish platform specific initialization */
|
|
if (pdata->init) {
|
|
result = pdata->init();
|
|
if (result)
|
|
return result;
|
|
}
|
|
|
|
policy->clk = cpufreq.armclk;
|
|
|
|
/*
|
|
* Time measurement across the target() function yields ~1500-1800us
|
|
* time taken with no drivers on notification list.
|
|
* Setting the latency to 2000 us to accommodate addition of drivers
|
|
* to pre/post change notification list.
|
|
*/
|
|
cpufreq_generic_init(policy, freq_table, 2000 * 1000);
|
|
return 0;
|
|
}
|
|
|
|
static struct cpufreq_driver davinci_driver = {
|
|
.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK,
|
|
.verify = cpufreq_generic_frequency_table_verify,
|
|
.target_index = davinci_target,
|
|
.get = cpufreq_generic_get,
|
|
.init = davinci_cpu_init,
|
|
.name = "davinci",
|
|
.attr = cpufreq_generic_attr,
|
|
};
|
|
|
|
static int __init davinci_cpufreq_probe(struct platform_device *pdev)
|
|
{
|
|
struct davinci_cpufreq_config *pdata = pdev->dev.platform_data;
|
|
struct clk *asyncclk;
|
|
|
|
if (!pdata)
|
|
return -EINVAL;
|
|
if (!pdata->freq_table)
|
|
return -EINVAL;
|
|
|
|
cpufreq.dev = &pdev->dev;
|
|
|
|
cpufreq.armclk = clk_get(NULL, "arm");
|
|
if (IS_ERR(cpufreq.armclk)) {
|
|
dev_err(cpufreq.dev, "Unable to get ARM clock\n");
|
|
return PTR_ERR(cpufreq.armclk);
|
|
}
|
|
|
|
asyncclk = clk_get(cpufreq.dev, "async");
|
|
if (!IS_ERR(asyncclk)) {
|
|
cpufreq.asyncclk = asyncclk;
|
|
cpufreq.asyncrate = clk_get_rate(asyncclk);
|
|
}
|
|
|
|
return cpufreq_register_driver(&davinci_driver);
|
|
}
|
|
|
|
static int __exit davinci_cpufreq_remove(struct platform_device *pdev)
|
|
{
|
|
clk_put(cpufreq.armclk);
|
|
|
|
if (cpufreq.asyncclk)
|
|
clk_put(cpufreq.asyncclk);
|
|
|
|
return cpufreq_unregister_driver(&davinci_driver);
|
|
}
|
|
|
|
static struct platform_driver davinci_cpufreq_driver = {
|
|
.driver = {
|
|
.name = "cpufreq-davinci",
|
|
},
|
|
.remove = __exit_p(davinci_cpufreq_remove),
|
|
};
|
|
|
|
int __init davinci_cpufreq_init(void)
|
|
{
|
|
return platform_driver_probe(&davinci_cpufreq_driver,
|
|
davinci_cpufreq_probe);
|
|
}
|
|
|