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authorOlof Johansson <olof@lixom.net>2017-06-18 20:55:07 -0700
committerOlof Johansson <olof@lixom.net>2017-06-18 20:55:07 -0700
commit93c452f5d396175b4bfbc989e379c47761af7271 (patch)
tree726bd366e1af487a62e2c9dd3aba1cc6be166451 /drivers/cpufreq
parent8c2f8a2fb1248d5b8eda6271f095e7703fd133dd (diff)
parentc0f2e21953324def9e2f8394406b557d7cb5af64 (diff)
downloadop-kernel-dev-93c452f5d396175b4bfbc989e379c47761af7271.zip
op-kernel-dev-93c452f5d396175b4bfbc989e379c47761af7271.tar.gz
Merge tag 'scpi-updates-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/drivers
SCPI update for v4.13 Adds support to get DVFS transition latency and OPP for any device whose DVFS are managed by SCPI. This avoids code duplication in both cpufreq and devfreq SCPI drivers. * tag 'scpi-updates-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: cpufreq: scpi: use new scpi_ops functions to remove duplicate code firmware: arm_scpi: add support to populate OPPs and get transition latency Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/scpi-cpufreq.c38
1 files changed, 6 insertions, 32 deletions
diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c
index ea7a4e1..8de2364 100644
--- a/drivers/cpufreq/scpi-cpufreq.c
+++ b/drivers/cpufreq/scpi-cpufreq.c
@@ -30,46 +30,20 @@
static struct scpi_ops *scpi_ops;
-static struct scpi_dvfs_info *scpi_get_dvfs_info(struct device *cpu_dev)
-{
- int domain = topology_physical_package_id(cpu_dev->id);
-
- if (domain < 0)
- return ERR_PTR(-EINVAL);
- return scpi_ops->dvfs_get_info(domain);
-}
-
static int scpi_get_transition_latency(struct device *cpu_dev)
{
- struct scpi_dvfs_info *info = scpi_get_dvfs_info(cpu_dev);
-
- if (IS_ERR(info))
- return PTR_ERR(info);
- return info->latency;
+ return scpi_ops->get_transition_latency(cpu_dev);
}
static int scpi_init_opp_table(const struct cpumask *cpumask)
{
- int idx, ret;
- struct scpi_opp *opp;
+ int ret;
struct device *cpu_dev = get_cpu_device(cpumask_first(cpumask));
- struct scpi_dvfs_info *info = scpi_get_dvfs_info(cpu_dev);
-
- if (IS_ERR(info))
- return PTR_ERR(info);
-
- if (!info->opps)
- return -EIO;
- for (opp = info->opps, idx = 0; idx < info->count; idx++, opp++) {
- ret = dev_pm_opp_add(cpu_dev, opp->freq, opp->m_volt * 1000);
- if (ret) {
- dev_warn(cpu_dev, "failed to add opp %uHz %umV\n",
- opp->freq, opp->m_volt);
- while (idx-- > 0)
- dev_pm_opp_remove(cpu_dev, (--opp)->freq);
- return ret;
- }
+ ret = scpi_ops->add_opps_to_device(cpu_dev);
+ if (ret) {
+ dev_warn(cpu_dev, "failed to add opps to the device\n");
+ return ret;
}
ret = dev_pm_opp_set_sharing_cpus(cpu_dev, cpumask);
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