Merge tag 'pm-4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki: "These fix three issues in cpufreq drivers: one recent regression, one leftover Kconfig dependency and one old but "stable" material. Specifics: - Make the task scheduler load and utilization signals be frequency-invariant again after recent changes in the SCPI cpufreq driver (Dietmar Eggemann). - Drop an unnecessary leftover Kconfig dependency from the SCPI cpufreq driver (Sudeep Holla). - Fix the initialization of the s3c24xx cpufreq driver (Viresh Kumar)" * tag 'pm-4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() cpufreq: scpi: Fix incorrect arm_big_little config dependency cpufreq: scpi: invoke frequency-invariance setter function
This commit is contained in:
@@ -44,10 +44,10 @@ config ARM_DT_BL_CPUFREQ
|
||||
|
||||
config ARM_SCPI_CPUFREQ
|
||||
tristate "SCPI based CPUfreq driver"
|
||||
depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
|
||||
depends on ARM_SCPI_PROTOCOL && COMMON_CLK_SCPI
|
||||
help
|
||||
This adds the CPUfreq driver support for ARM big.LITTLE platforms
|
||||
using SCPI protocol for CPU power management.
|
||||
This adds the CPUfreq driver support for ARM platforms using SCPI
|
||||
protocol for CPU power management.
|
||||
|
||||
This driver uses SCPI Message Protocol driver to interact with the
|
||||
firmware providing the CPU DVFS functionality.
|
||||
|
@@ -351,7 +351,13 @@ struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name)
|
||||
static int s3c_cpufreq_init(struct cpufreq_policy *policy)
|
||||
{
|
||||
policy->clk = clk_arm;
|
||||
return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency);
|
||||
|
||||
policy->cpuinfo.transition_latency = cpu_cur.info->latency;
|
||||
|
||||
if (ftab)
|
||||
return cpufreq_table_validate_and_show(policy, ftab);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init s3c_cpufreq_initclks(void)
|
||||
|
@@ -51,15 +51,23 @@ static unsigned int scpi_cpufreq_get_rate(unsigned int cpu)
|
||||
static int
|
||||
scpi_cpufreq_set_target(struct cpufreq_policy *policy, unsigned int index)
|
||||
{
|
||||
unsigned long freq = policy->freq_table[index].frequency;
|
||||
struct scpi_data *priv = policy->driver_data;
|
||||
u64 rate = policy->freq_table[index].frequency * 1000;
|
||||
u64 rate = freq * 1000;
|
||||
int ret;
|
||||
|
||||
ret = clk_set_rate(priv->clk, rate);
|
||||
if (!ret && (clk_get_rate(priv->clk) != rate))
|
||||
ret = -EIO;
|
||||
|
||||
return ret;
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (clk_get_rate(priv->clk) != rate)
|
||||
return -EIO;
|
||||
|
||||
arch_set_freq_scale(policy->related_cpus, freq,
|
||||
policy->cpuinfo.max_freq);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
|
Reference in New Issue
Block a user