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Commit c4f5a40b authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
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Merge branch 'pm-opp' 

Merge operating performance points (OPP) updates for 5.20-rc1.

* pm-opp: (43 commits)
  venus: pm_helpers: Fix warning in OPP during probe
  OPP: Don't drop opp->np reference while it is still in use
  OPP: Don't drop opp_table->np reference while it is still in use
  OPP: Remove dev{m}_pm_opp_of_add_table_noclk()
  PM / devfreq: tegra30: Register config_clks helper
  OPP: Allow config_clks helper for single clk case
  OPP: Provide a simple implementation to configure multiple clocks
  OPP: Assert clk_count == 1 for single clk helpers
  OPP: Add key specific assert() method to key finding helpers
  OPP: Compare bandwidths for all paths in _opp_compare_key()
  OPP: Allow multiple clocks for a device
  dt-bindings: opp: accept array of frequencies
  OPP: Make dev_pm_opp_set_opp() independent of frequency
  OPP: Reuse _opp_compare_key() in _opp_add_static_v2()
  OPP: Remove rate_not_available parameter to _opp_add()
  OPP: Use consistent names for OPP table instances
  OPP: Use generic key finding helpers for bandwidth key
  OPP: Use generic key finding helpers for level key
  OPP: Add generic key finding helpers and use them for freq APIs
  OPP: Remove dev_pm_opp_find_freq_ceil_by_volt()
  ...
parents 6ab4b199 f6e0b468
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Showing with 1356 additions and 1274 deletions
Documentation/devicetree/bindings/opp/opp-v2-base.yaml
View file @ c4f5a40b
......@@ -50,6 +50,16 @@ patternProperties:
property to uniquely identify the OPP nodes exists. Devices like power
domains must have another (implementation dependent) property.
Entries for multiple clocks shall be provided in the same field, as
array of frequencies. The OPP binding doesn't provide any provisions
to relate the values to their clocks or the order in which the clocks
need to be configured and that is left for the implementation
specific binding.
minItems: 1
maxItems: 16
items:
maxItems: 1
opp-microvolt:
description: |
Voltage for the OPP
......
drivers/cpufreq/cpufreq-dt.c
View file @ c4f5a40b
......@@ -29,9 +29,9 @@ struct private_data {
cpumask_var_t cpus;
struct device *cpu_dev;
struct opp_table *opp_table;
struct cpufreq_frequency_table *freq_table;
bool have_static_opps;
int opp_token;
};
static LIST_HEAD(priv_list);
......@@ -193,7 +193,7 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
struct private_data *priv;
struct device *cpu_dev;
bool fallback = false;
const char *reg_name;
const char *reg_name[] = { NULL, NULL };
int ret;
/* Check if this CPU is already covered by some other policy */
......@@ -218,12 +218,11 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
* OPP layer will be taking care of regulators now, but it needs to know
* the name of the regulator first.
*/
reg_name = find_supply_name(cpu_dev);
if (reg_name) {
priv->opp_table = dev_pm_opp_set_regulators(cpu_dev, &reg_name,
1);
if (IS_ERR(priv->opp_table)) {
ret = PTR_ERR(priv->opp_table);
reg_name[0] = find_supply_name(cpu_dev);
if (reg_name[0]) {
priv->opp_token = dev_pm_opp_set_regulators(cpu_dev, reg_name);
if (priv->opp_token < 0) {
ret = priv->opp_token;
if (ret != -EPROBE_DEFER)
dev_err(cpu_dev, "failed to set regulators: %d\n",
ret);
......@@ -295,7 +294,7 @@ static int dt_cpufreq_early_init(struct device *dev, int cpu)
out:
if (priv->have_static_opps)
dev_pm_opp_of_cpumask_remove_table(priv->cpus);
dev_pm_opp_put_regulators(priv->opp_table);
dev_pm_opp_put_regulators(priv->opp_token);
free_cpumask:
free_cpumask_var(priv->cpus);
return ret;
......@@ -309,7 +308,7 @@ static void dt_cpufreq_release(void)
dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &priv->freq_table);
if (priv->have_static_opps)
dev_pm_opp_of_cpumask_remove_table(priv->cpus);
dev_pm_opp_put_regulators(priv->opp_table);
dev_pm_opp_put_regulators(priv->opp_token);
free_cpumask_var(priv->cpus);
list_del(&priv->node);
}
......
drivers/cpufreq/imx-cpufreq-dt.c
View file @ c4f5a40b
......@@ -31,8 +31,8 @@
/* cpufreq-dt device registered by imx-cpufreq-dt */
static struct platform_device *cpufreq_dt_pdev;
static struct opp_table *cpufreq_opp_table;
static struct device *cpu_dev;
static int cpufreq_opp_token;
enum IMX7ULP_CPUFREQ_CLKS {
ARM,
......@@ -153,9 +153,9 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "cpu speed grade %d mkt segment %d supported-hw %#x %#x\n",
speed_grade, mkt_segment, supported_hw[0], supported_hw[1]);
cpufreq_opp_table = dev_pm_opp_set_supported_hw(cpu_dev, supported_hw, 2);
if (IS_ERR(cpufreq_opp_table)) {
ret = PTR_ERR(cpufreq_opp_table);
cpufreq_opp_token = dev_pm_opp_set_supported_hw(cpu_dev, supported_hw, 2);
if (cpufreq_opp_token < 0) {
ret = cpufreq_opp_token;
dev_err(&pdev->dev, "Failed to set supported opp: %d\n", ret);
return ret;
}
......@@ -163,7 +163,7 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
cpufreq_dt_pdev = platform_device_register_data(
&pdev->dev, "cpufreq-dt", -1, NULL, 0);
if (IS_ERR(cpufreq_dt_pdev)) {
dev_pm_opp_put_supported_hw(cpufreq_opp_table);
dev_pm_opp_put_supported_hw(cpufreq_opp_token);
ret = PTR_ERR(cpufreq_dt_pdev);
dev_err(&pdev->dev, "Failed to register cpufreq-dt: %d\n", ret);
return ret;
......@@ -176,7 +176,7 @@ static int imx_cpufreq_dt_remove(struct platform_device *pdev)
{
platform_device_unregister(cpufreq_dt_pdev);
if (!of_machine_is_compatible("fsl,imx7ulp"))
dev_pm_opp_put_supported_hw(cpufreq_opp_table);
dev_pm_opp_put_supported_hw(cpufreq_opp_token);
else
clk_bulk_put(ARRAY_SIZE(imx7ulp_clks), imx7ulp_clks);
......
drivers/cpufreq/qcom-cpufreq-nvmem.c
View file @ c4f5a40b
......@@ -55,9 +55,7 @@ struct qcom_cpufreq_match_data {
};
struct qcom_cpufreq_drv {
struct opp_table **names_opp_tables;
struct opp_table **hw_opp_tables;
struct opp_table **genpd_opp_tables;
int *opp_tokens;
u32 versions;
const struct qcom_cpufreq_match_data *data;
};
......@@ -315,72 +313,43 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
}
of_node_put(np);
drv->names_opp_tables = kcalloc(num_possible_cpus(),
sizeof(*drv->names_opp_tables),
drv->opp_tokens = kcalloc(num_possible_cpus(), sizeof(*drv->opp_tokens),
GFP_KERNEL);
if (!drv->names_opp_tables) {
if (!drv->opp_tokens) {
ret = -ENOMEM;
goto free_drv;
}
drv->hw_opp_tables = kcalloc(num_possible_cpus(),
sizeof(*drv->hw_opp_tables),
GFP_KERNEL);
if (!drv->hw_opp_tables) {
ret = -ENOMEM;
goto free_opp_names;
}
drv->genpd_opp_tables = kcalloc(num_possible_cpus(),
sizeof(*drv->genpd_opp_tables),
GFP_KERNEL);
if (!drv->genpd_opp_tables) {
ret = -ENOMEM;
goto free_opp;
}
for_each_possible_cpu(cpu) {
struct dev_pm_opp_config config = {
.supported_hw = NULL,
};
cpu_dev = get_cpu_device(cpu);
if (NULL == cpu_dev) {
ret = -ENODEV;
goto free_genpd_opp;
goto free_opp;
}
if (drv->data->get_version) {
config.supported_hw = &drv->versions;
config.supported_hw_count = 1;
if (pvs_name) {
drv->names_opp_tables[cpu] = dev_pm_opp_set_prop_name(
cpu_dev,
pvs_name);
if (IS_ERR(drv->names_opp_tables[cpu])) {
ret = PTR_ERR(drv->names_opp_tables[cpu]);
dev_err(cpu_dev, "Failed to add OPP name %s\n",
pvs_name);
goto free_opp;
}
}
drv->hw_opp_tables[cpu] = dev_pm_opp_set_supported_hw(
cpu_dev, &drv->versions, 1);
if (IS_ERR(drv->hw_opp_tables[cpu])) {
ret = PTR_ERR(drv->hw_opp_tables[cpu]);
dev_err(cpu_dev,
"Failed to set supported hardware\n");
goto free_genpd_opp;
}
if (pvs_name)
config.prop_name = pvs_name;
}
if (drv->data->genpd_names) {
drv->genpd_opp_tables[cpu] =
dev_pm_opp_attach_genpd(cpu_dev,
drv->data->genpd_names,
NULL);
if (IS_ERR(drv->genpd_opp_tables[cpu])) {
ret = PTR_ERR(drv->genpd_opp_tables[cpu]);
if (ret != -EPROBE_DEFER)
dev_err(cpu_dev,
"Could not attach to pm_domain: %d\n",
ret);
goto free_genpd_opp;
config.genpd_names = drv->data->genpd_names;
config.virt_devs = NULL;
}
if (config.supported_hw || config.genpd_names) {
drv->opp_tokens[cpu] = dev_pm_opp_set_config(cpu_dev, &config);
if (drv->opp_tokens[cpu] < 0) {
ret = drv->opp_tokens[cpu];
dev_err(cpu_dev, "Failed to set OPP config\n");
goto free_opp;
}
}
}
......@@ -395,27 +364,10 @@ static int qcom_cpufreq_probe(struct platform_device *pdev)
ret = PTR_ERR(cpufreq_dt_pdev);
dev_err(cpu_dev, "Failed to register platform device\n");
free_genpd_opp:
for_each_possible_cpu(cpu) {
if (IS_ERR(drv->genpd_opp_tables[cpu]))
break;
dev_pm_opp_detach_genpd(drv->genpd_opp_tables[cpu]);
}
kfree(drv->genpd_opp_tables);
free_opp:
for_each_possible_cpu(cpu) {
if (IS_ERR(drv->names_opp_tables[cpu]))
break;
dev_pm_opp_put_prop_name(drv->names_opp_tables[cpu]);
}
for_each_possible_cpu(cpu) {
if (IS_ERR(drv->hw_opp_tables[cpu]))
break;
dev_pm_opp_put_supported_hw(drv->hw_opp_tables[cpu]);
}
kfree(drv->hw_opp_tables);
free_opp_names:
kfree(drv->names_opp_tables);
for_each_possible_cpu(cpu)
dev_pm_opp_clear_config(drv->opp_tokens[cpu]);
kfree(drv->opp_tokens);
free_drv:
kfree(drv);
......@@ -429,15 +381,10 @@ static int qcom_cpufreq_remove(struct platform_device *pdev)
platform_device_unregister(cpufreq_dt_pdev);
for_each_possible_cpu(cpu) {
dev_pm_opp_put_supported_hw(drv->names_opp_tables[cpu]);
dev_pm_opp_put_supported_hw(drv->hw_opp_tables[cpu]);
dev_pm_opp_detach_genpd(drv->genpd_opp_tables[cpu]);
}
for_each_possible_cpu(cpu)
dev_pm_opp_clear_config(drv->opp_tokens[cpu]);
kfree(drv->names_opp_tables);
kfree(drv->hw_opp_tables);
kfree(drv->genpd_opp_tables);
kfree(drv->opp_tokens);
kfree(drv);
return 0;
......
drivers/cpufreq/sti-cpufreq.c
View file @ c4f5a40b
......@@ -156,9 +156,13 @@ static int sti_cpufreq_set_opp_info(void)
unsigned int hw_info_offset;
unsigned int version[VERSION_ELEMENTS];
int pcode, substrate, major, minor;
int ret;
int opp_token, ret;
char name[MAX_PCODE_NAME_LEN];
struct opp_table *opp_table;
struct dev_pm_opp_config config = {
.supported_hw = version,
.supported_hw_count = ARRAY_SIZE(version),
.prop_name = name,
};
reg_fields = sti_cpufreq_match();
if (!reg_fields) {
......@@ -210,21 +214,14 @@ static int sti_cpufreq_set_opp_info(void)
snprintf(name, MAX_PCODE_NAME_LEN, "pcode%d", pcode);
opp_table = dev_pm_opp_set_prop_name(dev, name);
if (IS_ERR(opp_table)) {
dev_err(dev, "Failed to set prop name\n");
return PTR_ERR(opp_table);
}
version[0] = BIT(major);
version[1] = BIT(minor);
version[2] = BIT(substrate);
opp_table = dev_pm_opp_set_supported_hw(dev, version, VERSION_ELEMENTS);
if (IS_ERR(opp_table)) {
dev_err(dev, "Failed to set supported hardware\n");
ret = PTR_ERR(opp_table);
goto err_put_prop_name;
opp_token = dev_pm_opp_set_config(dev, &config);
if (opp_token < 0) {
dev_err(dev, "Failed to set OPP config\n");
return opp_token;
}
dev_dbg(dev, "pcode: %d major: %d minor: %d substrate: %d\n",
......@@ -233,10 +230,6 @@ static int sti_cpufreq_set_opp_info(void)
version[0], version[1], version[2]);
return 0;
err_put_prop_name:
dev_pm_opp_put_prop_name(opp_table);
return ret;
}
static int sti_cpufreq_fetch_syscon_registers(void)
......
drivers/cpufreq/sun50i-cpufreq-nvmem.c
View file @ c4f5a40b
......@@ -86,20 +86,20 @@ static int sun50i_cpufreq_get_efuse(u32 *versions)
static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
{
struct opp_table **opp_tables;
int *opp_tokens;
char name[MAX_NAME_LEN];
unsigned int cpu;
u32 speed = 0;
int ret;
opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables),
opp_tokens = kcalloc(num_possible_cpus(), sizeof(*opp_tokens),
GFP_KERNEL);
if (!opp_tables)
if (!opp_tokens)
return -ENOMEM;
ret = sun50i_cpufreq_get_efuse(&speed);
if (ret) {
kfree(opp_tables);
kfree(opp_tokens);
return ret;
}
......@@ -113,9 +113,9 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
goto free_opp;
}
opp_tables[cpu] = dev_pm_opp_set_prop_name(cpu_dev, name);
if (IS_ERR(opp_tables[cpu])) {
ret = PTR_ERR(opp_tables[cpu]);
opp_tokens[cpu] = dev_pm_opp_set_prop_name(cpu_dev, name);
if (opp_tokens[cpu] < 0) {
ret = opp_tokens[cpu];
pr_err("Failed to set prop name\n");
goto free_opp;
}
......@@ -124,7 +124,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1,
NULL, 0);
if (!IS_ERR(cpufreq_dt_pdev)) {
platform_set_drvdata(pdev, opp_tables);
platform_set_drvdata(pdev, opp_tokens);
return 0;
}
......@@ -132,27 +132,24 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
pr_err("Failed to register platform device\n");
free_opp:
for_each_possible_cpu(cpu) {
if (IS_ERR_OR_NULL(opp_tables[cpu]))
break;
dev_pm_opp_put_prop_name(opp_tables[cpu]);
}
kfree(opp_tables);
for_each_possible_cpu(cpu)
dev_pm_opp_put_prop_name(opp_tokens[cpu]);
kfree(opp_tokens);
return ret;
}
static int sun50i_cpufreq_nvmem_remove(struct platform_device *pdev)
{
struct opp_table **opp_tables = platform_get_drvdata(pdev);
int *opp_tokens = platform_get_drvdata(pdev);
unsigned int cpu;
platform_device_unregister(cpufreq_dt_pdev);
for_each_possible_cpu(cpu)
dev_pm_opp_put_prop_name(opp_tables[cpu]);
dev_pm_opp_put_prop_name(opp_tokens[cpu]);
kfree(opp_tables);
kfree(opp_tokens);
return 0;
}
......
drivers/cpufreq/tegra20-cpufreq.c
View file @ c4f5a40b
......@@ -32,9 +32,9 @@ static bool cpu0_node_has_opp_v2_prop(void)
return ret;
}
static void tegra20_cpufreq_put_supported_hw(void *opp_table)
static void tegra20_cpufreq_put_supported_hw(void *opp_token)
{
dev_pm_opp_put_supported_hw(opp_table);
dev_pm_opp_put_supported_hw((unsigned long) opp_token);
}
static void tegra20_cpufreq_dt_unregister(void *cpufreq_dt)
......@@ -45,7 +45,6 @@ static void tegra20_cpufreq_dt_unregister(void *cpufreq_dt)
static int tegra20_cpufreq_probe(struct platform_device *pdev)
{
struct platform_device *cpufreq_dt;
struct opp_table *opp_table;
struct device *cpu_dev;
u32 versions[2];
int err;
......@@ -71,16 +70,15 @@ static int tegra20_cpufreq_probe(struct platform_device *pdev)
if (WARN_ON(!cpu_dev))
return -ENODEV;
opp_table = dev_pm_opp_set_supported_hw(cpu_dev, versions, 2);
err = PTR_ERR_OR_ZERO(opp_table);
if (err) {
err = dev_pm_opp_set_supported_hw(cpu_dev, versions, 2);
if (err < 0) {
dev_err(&pdev->dev, "failed to set supported hw: %d\n", err);
return err;
}
err = devm_add_action_or_reset(&pdev->dev,
tegra20_cpufreq_put_supported_hw,
opp_table);
(void *)((unsigned long) err));
if (err)
return err;
......
drivers/cpufreq/ti-cpufreq.c
View file @ c4f5a40b
......@@ -60,7 +60,6 @@ struct ti_cpufreq_data {
struct device_node *opp_node;
struct regmap *syscon;
const struct ti_cpufreq_soc_data *soc_data;
struct opp_table *opp_table;
};
static unsigned long amx3_efuse_xlate(struct ti_cpufreq_data *opp_data,
......@@ -173,7 +172,7 @@ static struct ti_cpufreq_soc_data omap34xx_soc_data = {
* seems to always read as 0).
*/
static const char * const omap3_reg_names[] = {"cpu0", "vbb"};
static const char * const omap3_reg_names[] = {"cpu0", "vbb", NULL};
static struct ti_cpufreq_soc_data omap36xx_soc_data = {
.reg_names = omap3_reg_names,
......@@ -324,10 +323,13 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
{
u32 version[VERSION_COUNT];
const struct of_device_id *match;
struct opp_table *ti_opp_table;
struct ti_cpufreq_data *opp_data;
const char * const default_reg_names[] = {"vdd", "vbb"};
const char * const default_reg_names[] = {"vdd", "vbb", NULL};
int ret;
struct dev_pm_opp_config config = {
.supported_hw = version,
.supported_hw_count = ARRAY_SIZE(version),
};
match = dev_get_platdata(&pdev->dev);
if (!match)
......@@ -370,33 +372,21 @@ static int ti_cpufreq_probe(struct platform_device *pdev)
if (ret)
goto fail_put_node;
ti_opp_table = dev_pm_opp_set_supported_hw(opp_data->cpu_dev,
version, VERSION_COUNT);
if (IS_ERR(ti_opp_table)) {
dev_err(opp_data->cpu_dev,
"Failed to set supported hardware\n");
ret = PTR_ERR(ti_opp_table);
goto fail_put_node;
}
opp_data->opp_table = ti_opp_table;
if (opp_data->soc_data->multi_regulator) {
const char * const *reg_names = default_reg_names;
if (opp_data->soc_data->reg_names)
reg_names = opp_data->soc_data->reg_names;
ti_opp_table = dev_pm_opp_set_regulators(opp_data->cpu_dev,
reg_names,
ARRAY_SIZE(default_reg_names));
if (IS_ERR(ti_opp_table)) {
dev_pm_opp_put_supported_hw(opp_data->opp_table);
ret = PTR_ERR(ti_opp_table);
goto fail_put_node;
}
config.regulator_names = opp_data->soc_data->reg_names;
else
config.regulator_names = default_reg_names;
}
ret = dev_pm_opp_set_config(opp_data->cpu_dev, &config);
if (ret < 0) {
dev_err(opp_data->cpu_dev, "Failed to set OPP config\n");
goto fail_put_node;
}
of_node_put(opp_data->opp_node);
register_cpufreq_dt:
platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
......
drivers/devfreq/exynos-bus.c
View file @ c4f5a40b
......@@ -33,7 +33,7 @@ struct exynos_bus {
unsigned long curr_freq;
struct opp_table *opp_table;
int opp_token;
struct clk *clk;
unsigned int ratio;
};
......@@ -161,8 +161,7 @@ static void exynos_bus_exit(struct device *dev)
dev_pm_opp_of_remove_table(dev);
clk_disable_unprepare(bus->clk);
dev_pm_opp_put_regulators(bus->opp_table);
bus->opp_table = NULL;
dev_pm_opp_put_regulators(bus->opp_token);
}
static void exynos_bus_passive_exit(struct device *dev)
......@@ -179,18 +178,16 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
struct exynos_bus *bus)
{
struct device *dev = bus->dev;
struct opp_table *opp_table;
const char *vdd = "vdd";
const char *supplies[] = { "vdd", NULL };
int i, ret, count, size;
opp_table = dev_pm_opp_set_regulators(dev, &vdd, 1);
if (IS_ERR(opp_table)) {
ret = PTR_ERR(opp_table);
ret = dev_pm_opp_set_regulators(dev, supplies);
if (ret < 0) {
dev_err(dev, "failed to set regulators %d\n", ret);
return ret;
}
bus->opp_table = opp_table;
bus->opp_token = ret;
/*
* Get the devfreq-event devices to get the current utilization of
......@@ -236,8 +233,7 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
return 0;
err_regulator:
dev_pm_opp_put_regulators(bus->opp_table);
bus->opp_table = NULL;
dev_pm_opp_put_regulators(bus->opp_token);
return ret;
}
......@@ -459,8 +455,7 @@ static int exynos_bus_probe(struct platform_device *pdev)
dev_pm_opp_of_remove_table(dev);
clk_disable_unprepare(bus->clk);
err_reg:
dev_pm_opp_put_regulators(bus->opp_table);
bus->opp_table = NULL;
dev_pm_opp_put_regulators(bus->opp_token);
return ret;
}
......
drivers/devfreq/tegra30-devfreq.c
View file @ c4f5a40b
......@@ -821,6 +821,15 @@ static int devm_tegra_devfreq_init_hw(struct device *dev,
return err;
}
static int tegra_devfreq_config_clks_nop(struct device *dev,
struct opp_table *opp_table,
struct dev_pm_opp *opp, void *data,
bool scaling_down)
{
/* We want to skip clk configuration via dev_pm_opp_set_opp() */
return 0;
}
static int tegra_devfreq_probe(struct platform_device *pdev)
{
u32 hw_version = BIT(tegra_sku_info.soc_speedo_id);
......@@ -830,6 +839,13 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
unsigned int i;
long rate;
int err;
const char *clk_names[] = { "actmon", NULL };
struct dev_pm_opp_config config = {
.supported_hw = &hw_version,
.supported_hw_count = 1,
.clk_names = clk_names,
.config_clks = tegra_devfreq_config_clks_nop,
};
tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
if (!tegra)
......@@ -874,13 +890,13 @@ static int tegra_devfreq_probe(struct platform_device *pdev)
return err;
}
err = devm_pm_opp_set_supported_hw(&pdev->dev, &hw_version, 1);
err = devm_pm_opp_set_config(&pdev->dev, &config);
if (err) {
dev_err(&pdev->dev, "Failed to set supported HW: %d\n", err);
dev_err(&pdev->dev, "Failed to set OPP config: %d\n", err);
return err;
}
err = devm_pm_opp_of_add_table_noclk(&pdev->dev, 0);
err = devm_pm_opp_of_add_table_indexed(&pdev->dev, 0);
if (err) {
dev_err(&pdev->dev, "Failed to add OPP table: %d\n", err);
return err;
......
drivers/gpu/drm/lima/lima_devfreq.c
View file @ c4f5a40b
......@@ -111,6 +111,12 @@ int lima_devfreq_init(struct lima_device *ldev)
struct dev_pm_opp *opp;
unsigned long cur_freq;
int ret;
const char *regulator_names[] = { "mali", NULL };
const char *clk_names[] = { "core", NULL };
struct dev_pm_opp_config config = {
.regulator_names = regulator_names,
.clk_names = clk_names,
};
if (!device_property_present(dev, "operating-points-v2"))
/* Optional, continue without devfreq */
......@@ -118,11 +124,7 @@ int lima_devfreq_init(struct lima_device *ldev)
spin_lock_init(&ldevfreq->lock);
ret = devm_pm_opp_set_clkname(dev, "core");
if (ret)
return ret;
ret = devm_pm_opp_set_regulators(dev, (const char *[]){ "mali" }, 1);
ret = devm_pm_opp_set_config(dev, &config);
if (ret) {
/* Continue if the optional regulator is missing */
if (ret != -ENODEV)
......
drivers/gpu/drm/panfrost/panfrost_devfreq.c
View file @ c4f5a40b
......@@ -101,8 +101,7 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
return 0;
}
ret = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names,
pfdev->comp->num_supplies);
ret = devm_pm_opp_set_regulators(dev, pfdev->comp->supply_names);
if (ret) {
/* Continue if the optional regulator is missing */
if (ret != -ENODEV) {
......
drivers/gpu/drm/panfrost/panfrost_drv.c
View file @ c4f5a40b
......@@ -626,24 +626,29 @@ static int panfrost_remove(struct platform_device *pdev)
return 0;
}
static const char * const default_supplies[] = { "mali" };
/*
* The OPP core wants the supply names to be NULL terminated, but we need the
* correct num_supplies value for regulator core. Hence, we NULL terminate here
* and then initialize num_supplies with ARRAY_SIZE - 1.
*/
static const char * const default_supplies[] = { "mali", NULL };
static const struct panfrost_compatible default_data = {
.num_supplies = ARRAY_SIZE(default_supplies),
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 1, /* optional */
.pm_domain_names = NULL,
};
static const struct panfrost_compatible amlogic_data = {
.num_supplies = ARRAY_SIZE(default_supplies),
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.vendor_quirk = panfrost_gpu_amlogic_quirk,
};
static const char * const mediatek_mt8183_supplies[] = { "mali", "sram" };
static const char * const mediatek_mt8183_supplies[] = { "mali", "sram", NULL };
static const char * const mediatek_mt8183_pm_domains[] = { "core0", "core1", "core2" };
static const struct panfrost_compatible mediatek_mt8183_data = {
.num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies),
.num_supplies = ARRAY_SIZE(mediatek_mt8183_supplies) - 1,
.supply_names = mediatek_mt8183_supplies,
.num_pm_domains = ARRAY_SIZE(mediatek_mt8183_pm_domains),
.pm_domain_names = mediatek_mt8183_pm_domains,
......
drivers/media/platform/qcom/venus/pm_helpers.c
View file @ c4f5a40b
......@@ -875,7 +875,7 @@ static int vcodec_domains_get(struct venus_core *core)
}
skip_pmdomains:
if (!core->has_opp_table)
if (!core->res->opp_pmdomain)
return 0;
/* Attach the power domain for setting performance state */
......@@ -1007,6 +1007,10 @@ static int core_get_v4(struct venus_core *core)
if (ret)
return ret;
ret = vcodec_domains_get(core);
if (ret)
return ret;
if (core->res->opp_pmdomain) {
ret = devm_pm_opp_of_add_table(dev);
if (!ret) {
......@@ -1017,10 +1021,6 @@ static int core_get_v4(struct venus_core *core)
}
}
ret = vcodec_domains_get(core);
if (ret)
return ret;
return 0;
}
......
drivers/memory/tegra/tegra124-emc.c
View file @ c4f5a40b
......@@ -1395,15 +1395,14 @@ static int tegra_emc_interconnect_init(struct tegra_emc *emc)
static int tegra_emc_opp_table_init(struct tegra_emc *emc)
{
u32 hw_version = BIT(tegra_sku_info.soc_speedo_id);
struct opp_table *hw_opp_table;
int err;
int opp_token, err;
hw_opp_table = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
err = PTR_ERR_OR_ZERO(hw_opp_table);
if (err) {
err = dev_pm_opp_set_supported_hw(emc->dev, &hw_version, 1);
if (err < 0) {
dev_err(emc->dev, "failed to set OPP supported HW: %d\n", err);
return err;
}
opp_token = err;
err = dev_pm_opp_of_add_table(emc->dev);
if (err) {
......@@ -1430,7 +1429,7 @@ static int tegra_emc_opp_table_init(struct tegra_emc *emc)
remove_table:
dev_pm_opp_of_remove_table(emc->dev);
put_hw_table:
dev_pm_opp_put_supported_hw(hw_opp_table);
dev_pm_opp_put_supported_hw(opp_token);
return err;
}
......
drivers/opp/core.c
View file @ c4f5a40b
......@@ -13,11 +13,12 @@
#include <linux/clk.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/pm_domain.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/xarray.h>
#include "opp.h"
......@@ -36,6 +37,9 @@ DEFINE_MUTEX(opp_table_lock);
/* Flag indicating that opp_tables list is being updated at the moment */
static bool opp_tables_busy;
/* OPP ID allocator */
static DEFINE_XARRAY_ALLOC1(opp_configs);
static bool _find_opp_dev(const struct device *dev, struct opp_table *opp_table)
{
struct opp_device *opp_dev;
......@@ -93,6 +97,18 @@ struct opp_table *_find_opp_table(struct device *dev)
return opp_table;
}
/*
* Returns true if multiple clocks aren't there, else returns false with WARN.
*
* We don't force clk_count == 1 here as there are users who don't have a clock
* representation in the OPP table and manage the clock configuration themselves
* in an platform specific way.
*/
static bool assert_single_clk(struct opp_table *opp_table)
{
return !WARN_ON(opp_table->clk_count > 1);
}
/**
* dev_pm_opp_get_voltage() - Gets the voltage corresponding to an opp
* @opp: opp for which voltage has to be returned for
......@@ -113,6 +129,31 @@ unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_voltage);
/**
* dev_pm_opp_get_supplies() - Gets the supply information corresponding to an opp
* @opp: opp for which voltage has to be returned for
* @supplies: Placeholder for copying the supply information.
*
* Return: negative error number on failure, 0 otherwise on success after
* setting @supplies.
*
* This can be used for devices with any number of power supplies. The caller
* must ensure the @supplies array must contain space for each regulator.
*/
int dev_pm_opp_get_supplies(struct dev_pm_opp *opp,
struct dev_pm_opp_supply *supplies)
{
if (IS_ERR_OR_NULL(opp) || !supplies) {
pr_err("%s: Invalid parameters\n", __func__);
return -EINVAL;
}
memcpy(supplies, opp->supplies,
sizeof(*supplies) * opp->opp_table->regulator_count);
return 0;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_supplies);
/**
* dev_pm_opp_get_power() - Gets the power corresponding to an opp
* @opp: opp for which power has to be returned for
......@@ -152,7 +193,10 @@ unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
return 0;
}
return opp->rate;
if (!assert_single_clk(opp->opp_table))
return 0;
return opp->rates[0];
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_freq);
......@@ -398,6 +442,154 @@ int dev_pm_opp_get_opp_count(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_count);
/* Helpers to read keys */
static unsigned long _read_freq(struct dev_pm_opp *opp, int index)
{
return opp->rates[0];
}
static unsigned long _read_level(struct dev_pm_opp *opp, int index)
{
return opp->level;
}
static unsigned long _read_bw(struct dev_pm_opp *opp, int index)
{
return opp->bandwidth[index].peak;
}
/* Generic comparison helpers */
static bool _compare_exact(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp,
unsigned long opp_key, unsigned long key)
{
if (opp_key == key) {
*opp = temp_opp;
return true;
}
return false;
}
static bool _compare_ceil(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp,
unsigned long opp_key, unsigned long key)
{
if (opp_key >= key) {
*opp = temp_opp;
return true;
}
return false;
}
static bool _compare_floor(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp,
unsigned long opp_key, unsigned long key)
{
if (opp_key > key)
return true;
*opp = temp_opp;
return false;
}
/* Generic key finding helpers */
static struct dev_pm_opp *_opp_table_find_key(struct opp_table *opp_table,
unsigned long *key, int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp,
unsigned long opp_key, unsigned long key),
bool (*assert)(struct opp_table *opp_table))
{
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
/* Assert that the requirement is met */
if (assert && !assert(opp_table))
return ERR_PTR(-EINVAL);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available == available) {
if (compare(&opp, temp_opp, read(temp_opp, index), *key))
break;
}
}
/* Increment the reference count of OPP */
if (!IS_ERR(opp)) {
*key = read(opp, index);
dev_pm_opp_get(opp);
}
mutex_unlock(&opp_table->lock);
return opp;
}
static struct dev_pm_opp *
_find_key(struct device *dev, unsigned long *key, int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*compare)(struct dev_pm_opp **opp, struct dev_pm_opp *temp_opp,
unsigned long opp_key, unsigned long key),
bool (*assert)(struct opp_table *opp_table))
{
struct opp_table *opp_table;
struct dev_pm_opp *opp;
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
dev_err(dev, "%s: OPP table not found (%ld)\n", __func__,
PTR_ERR(opp_table));
return ERR_CAST(opp_table);
}
opp = _opp_table_find_key(opp_table, key, index, available, read,
compare, assert);
dev_pm_opp_put_opp_table(opp_table);
return opp;
}
static struct dev_pm_opp *_find_key_exact(struct device *dev,
unsigned long key, int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*assert)(struct opp_table *opp_table))
{
/*
* The value of key will be updated here, but will be ignored as the
* caller doesn't need it.
*/
return _find_key(dev, &key, index, available, read, _compare_exact,
assert);
}
static struct dev_pm_opp *_opp_table_find_key_ceil(struct opp_table *opp_table,
unsigned long *key, int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*assert)(struct opp_table *opp_table))
{
return _opp_table_find_key(opp_table, key, index, available, read,
_compare_ceil, assert);
}
static struct dev_pm_opp *_find_key_ceil(struct device *dev, unsigned long *key,
int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*assert)(struct opp_table *opp_table))
{
return _find_key(dev, key, index, available, read, _compare_ceil,
assert);
}
static struct dev_pm_opp *_find_key_floor(struct device *dev,
unsigned long *key, int index, bool available,
unsigned long (*read)(struct dev_pm_opp *opp, int index),
bool (*assert)(struct opp_table *opp_table))
{
return _find_key(dev, key, index, available, read, _compare_floor,
assert);
}
/**
* dev_pm_opp_find_freq_exact() - search for an exact frequency
* @dev: device for which we do this operation
......@@ -422,61 +614,18 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_opp_count);
* use.
*/
struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
unsigned long freq,
bool available)
unsigned long freq, bool available)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
int r = PTR_ERR(opp_table);
dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
return ERR_PTR(r);
}
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available == available &&
temp_opp->rate == freq) {
opp = temp_opp;
/* Increment the reference count of OPP */
dev_pm_opp_get(opp);
break;
}
}
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
return opp;
return _find_key_exact(dev, freq, 0, available, _read_freq,
assert_single_clk);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact);
static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
unsigned long *freq)
{
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available && temp_opp->rate >= *freq) {
opp = temp_opp;
*freq = opp->rate;
/* Increment the reference count of OPP */
dev_pm_opp_get(opp);
break;
}
}
mutex_unlock(&opp_table->lock);
return opp;
return _opp_table_find_key_ceil(opp_table, freq, 0, true, _read_freq,
assert_single_clk);
}
/**
......@@ -500,23 +649,7 @@ static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table,
struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq)
{
struct opp_table *opp_table;
struct dev_pm_opp *opp;
if (!dev || !freq) {
dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq);
return ERR_PTR(-EINVAL);
}
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
opp = _find_freq_ceil(opp_table, freq);
dev_pm_opp_put_opp_table(opp_table);
return opp;
return _find_key_ceil(dev, freq, 0, true, _read_freq, assert_single_clk);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil);
......@@ -541,97 +674,10 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil);
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
unsigned long *freq)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
if (!dev || !freq) {
dev_err(dev, "%s: Invalid argument freq=%p\n", __func__, freq);
return ERR_PTR(-EINVAL);
}
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available) {
/* go to the next node, before choosing prev */
if (temp_opp->rate > *freq)
break;
else
opp = temp_opp;
}
}
/* Increment the reference count of OPP */
if (!IS_ERR(opp))
dev_pm_opp_get(opp);
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
if (!IS_ERR(opp))
*freq = opp->rate;
return opp;
return _find_key_floor(dev, freq, 0, true, _read_freq, assert_single_clk);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_floor);
/**
* dev_pm_opp_find_freq_ceil_by_volt() - Find OPP with highest frequency for
* target voltage.
* @dev: Device for which we do this operation.
* @u_volt: Target voltage.
*
* Search for OPP with highest (ceil) frequency and has voltage <= u_volt.
*
* Return: matching *opp, else returns ERR_PTR in case of error which should be
* handled using IS_ERR.
*
* Error return values can be:
* EINVAL: bad parameters
*
* The callers are required to call dev_pm_opp_put() for the returned OPP after
* use.
*/
struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
if (!dev || !u_volt) {
dev_err(dev, "%s: Invalid argument volt=%lu\n", __func__,
u_volt);
return ERR_PTR(-EINVAL);
}
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available) {
if (temp_opp->supplies[0].u_volt > u_volt)
break;
opp = temp_opp;
}
}
/* Increment the reference count of OPP */
if (!IS_ERR(opp))
dev_pm_opp_get(opp);
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
return opp;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_by_volt);
/**
* dev_pm_opp_find_level_exact() - search for an exact level
* @dev: device for which we do this operation
......@@ -650,33 +696,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_by_volt);
struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
unsigned int level)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
int r = PTR_ERR(opp_table);
dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
return ERR_PTR(r);
}
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->level == level) {
opp = temp_opp;
/* Increment the reference count of OPP */
dev_pm_opp_get(opp);
break;
}
}
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
return opp;
return _find_key_exact(dev, level, 0, true, _read_level, NULL);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
......@@ -698,33 +718,11 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact);
struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev,
unsigned int *level)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table)) {
int r = PTR_ERR(opp_table);
dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r);
return ERR_PTR(r);
}
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available && temp_opp->level >= *level) {
opp = temp_opp;
*level = opp->level;
/* Increment the reference count of OPP */
dev_pm_opp_get(opp);
break;
}
}
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
unsigned long temp = *level;
struct dev_pm_opp *opp;
opp = _find_key_ceil(dev, &temp, 0, true, _read_level, NULL);
*level = temp;
return opp;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
......@@ -732,7 +730,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
/**
* dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth
* @dev: device for which we do this operation
* @freq: start bandwidth
* @bw: start bandwidth
* @index: which bandwidth to compare, in case of OPPs with several values
*
* Search for the matching floor *available* OPP from a starting bandwidth
......@@ -748,50 +746,22 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil);
* The callers are required to call dev_pm_opp_put() for the returned OPP after
* use.
*/
struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev,
unsigned int *bw, int index)
struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, unsigned int *bw,
int index)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
unsigned long temp = *bw;
struct dev_pm_opp *opp;
if (!dev || !bw) {
dev_err(dev, "%s: Invalid argument bw=%p\n", __func__, bw);
return ERR_PTR(-EINVAL);
}
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
if (index >= opp_table->path_count)
return ERR_PTR(-EINVAL);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available && temp_opp->bandwidth) {
if (temp_opp->bandwidth[index].peak >= *bw) {
opp = temp_opp;
*bw = opp->bandwidth[index].peak;
/* Increment the reference count of OPP */
dev_pm_opp_get(opp);
break;
}
}
}
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
return opp;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_ceil);
opp = _find_key_ceil(dev, &temp, index, true, _read_bw, NULL);
*bw = temp;
return opp;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_ceil);
/**
* dev_pm_opp_find_bw_floor() - Search for a rounded floor bandwidth
* @dev: device for which we do this operation
* @freq: start bandwidth
* @bw: start bandwidth
* @index: which bandwidth to compare, in case of OPPs with several values
*
* Search for the matching floor *available* OPP from a starting bandwidth
......@@ -810,41 +780,11 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_ceil);
struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
unsigned int *bw, int index)
{
struct opp_table *opp_table;
struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE);
if (!dev || !bw) {
dev_err(dev, "%s: Invalid argument bw=%p\n", __func__, bw);
return ERR_PTR(-EINVAL);
}
opp_table = _find_opp_table(dev);
if (IS_ERR(opp_table))
return ERR_CAST(opp_table);
if (index >= opp_table->path_count)
return ERR_PTR(-EINVAL);
mutex_lock(&opp_table->lock);
list_for_each_entry(temp_opp, &opp_table->opp_list, node) {
if (temp_opp->available && temp_opp->bandwidth) {
/* go to the next node, before choosing prev */
if (temp_opp->bandwidth[index].peak > *bw)
break;
opp = temp_opp;
}
}
/* Increment the reference count of OPP */
if (!IS_ERR(opp))
dev_pm_opp_get(opp);
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
if (!IS_ERR(opp))
*bw = opp->bandwidth[index].peak;
unsigned long temp = *bw;
struct dev_pm_opp *opp;
opp = _find_key_floor(dev, &temp, index, true, _read_bw, NULL);
*bw = temp;
return opp;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_find_bw_floor);
......@@ -874,80 +814,97 @@ static int _set_opp_voltage(struct device *dev, struct regulator *reg,
return ret;
}
static inline int _generic_set_opp_clk_only(struct device *dev, struct clk *clk,
unsigned long freq)
static int
_opp_config_clk_single(struct device *dev, struct opp_table *opp_table,
struct dev_pm_opp *opp, void *data, bool scaling_down)
{
unsigned long *target = data;
unsigned long freq;
int ret;
/* We may reach here for devices which don't change frequency */
if (IS_ERR(clk))
return 0;
/* One of target and opp must be available */
if (target) {
freq = *target;
} else if (opp) {
freq = opp->rates[0];
} else {
WARN_ON(1);
return -EINVAL;
}
ret = clk_set_rate(clk, freq);
ret = clk_set_rate(opp_table->clk, freq);
if (ret) {
dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
ret);
} else {
opp_table->rate_clk_single = freq;
}
return ret;
}
static int _generic_set_opp_regulator(struct opp_table *opp_table,
struct device *dev,
struct dev_pm_opp *opp,
unsigned long freq,
int scaling_down)
/*
* Simple implementation for configuring multiple clocks. Configure clocks in
* the order in which they are present in the array while scaling up.
*/
int dev_pm_opp_config_clks_simple(struct device *dev,
struct opp_table *opp_table, struct dev_pm_opp *opp, void *data,
bool scaling_down)
{
struct regulator *reg = opp_table->regulators[0];
struct dev_pm_opp *old_opp = opp_table->current_opp;
int ret, i;
if (scaling_down) {
for (i = opp_table->clk_count - 1; i >= 0; i--) {
ret = clk_set_rate(opp_table->clks[i], opp->rates[i]);
if (ret) {
dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
ret);
return ret;
}
}
} else {
for (i = 0; i < opp_table->clk_count; i++) {
ret = clk_set_rate(opp_table->clks[i], opp->rates[i]);
if (ret) {
dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
ret);
return ret;
}
}
}
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_config_clks_simple);
static int _opp_config_regulator_single(struct device *dev,
struct dev_pm_opp *old_opp, struct dev_pm_opp *new_opp,
struct regulator **regulators, unsigned int count)
{
struct regulator *reg = regulators[0];
int ret;
/* This function only supports single regulator per device */
if (WARN_ON(opp_table->regulator_count > 1)) {
if (WARN_ON(count > 1)) {
dev_err(dev, "multiple regulators are not supported\n");
return -EINVAL;
}
/* Scaling up? Scale voltage before frequency */
if (!scaling_down) {
ret = _set_opp_voltage(dev, reg, opp->supplies);
if (ret)
goto restore_voltage;
}
/* Change frequency */
ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
ret = _set_opp_voltage(dev, reg, new_opp->supplies);
if (ret)
goto restore_voltage;
/* Scaling down? Scale voltage after frequency */
if (scaling_down) {
ret = _set_opp_voltage(dev, reg, opp->supplies);
if (ret)
goto restore_freq;
}
return ret;
/*
* Enable the regulator after setting its voltages, otherwise it breaks
* some boot-enabled regulators.
*/
if (unlikely(!opp_table->enabled)) {
if (unlikely(!new_opp->opp_table->enabled)) {
ret = regulator_enable(reg);
if (ret < 0)
dev_warn(dev, "Failed to enable regulator: %d", ret);
}
return 0;
restore_freq:
if (_generic_set_opp_clk_only(dev, opp_table->clk, old_opp->rate))
dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
__func__, old_opp->rate);
restore_voltage:
/* This shouldn't harm even if the voltages weren't updated earlier */
_set_opp_voltage(dev, reg, old_opp->supplies);
return ret;
}
static int _set_opp_bw(const struct opp_table *opp_table,
......@@ -978,36 +935,6 @@ static int _set_opp_bw(const struct opp_table *opp_table,
return 0;
}
static int _set_opp_custom(const struct opp_table *opp_table,
struct device *dev, struct dev_pm_opp *opp,
unsigned long freq)
{
struct dev_pm_set_opp_data *data = opp_table->set_opp_data;
struct dev_pm_opp *old_opp = opp_table->current_opp;
int size;
/*
* We support this only if dev_pm_opp_set_regulators() was called
* earlier.
*/
if (opp_table->sod_supplies) {
size = sizeof(*old_opp->supplies) * opp_table->regulator_count;
memcpy(data->old_opp.supplies, old_opp->supplies, size);
memcpy(data->new_opp.supplies, opp->supplies, size);
data->regulator_count = opp_table->regulator_count;
} else {
data->regulator_count = 0;
}
data->regulators = opp_table->regulators;
data->clk = opp_table->clk;
data->dev = dev;
data->old_opp.rate = old_opp->rate;
data->new_opp.rate = freq;
return opp_table->set_opp(data);
}
static int _set_required_opp(struct device *dev, struct device *pd_dev,
struct dev_pm_opp *opp, int i)
{
......@@ -1019,7 +946,7 @@ static int _set_required_opp(struct device *dev, struct device *pd_dev,
ret = dev_pm_genpd_set_performance_state(pd_dev, pstate);
if (ret) {
dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n",
dev_err(dev, "Failed to set performance state of %s: %d (%d)\n",
dev_name(pd_dev), pstate, ret);
}
......@@ -1138,7 +1065,7 @@ static int _disable_opp_table(struct device *dev, struct opp_table *opp_table)
}
static int _set_opp(struct device *dev, struct opp_table *opp_table,
struct dev_pm_opp *opp, unsigned long freq)
struct dev_pm_opp *opp, void *clk_data, bool forced)
{
struct dev_pm_opp *old_opp;
int scaling_down, ret;
......@@ -1153,18 +1080,17 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table,
old_opp = opp_table->current_opp;
/* Return early if nothing to do */
if (old_opp == opp && opp_table->current_rate == freq &&
opp_table->enabled) {
if (!forced && old_opp == opp && opp_table->enabled) {
dev_dbg(dev, "%s: OPPs are same, nothing to do\n", __func__);
return 0;
}
dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n",
__func__, opp_table->current_rate, freq, old_opp->level,
__func__, old_opp->rates[0], opp->rates[0], old_opp->level,
opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0,
opp->bandwidth ? opp->bandwidth[0].peak : 0);
scaling_down = _opp_compare_key(old_opp, opp);
scaling_down = _opp_compare_key(opp_table, old_opp, opp);
if (scaling_down == -1)
scaling_down = 0;
......@@ -1181,23 +1107,38 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table,
dev_err(dev, "Failed to set bw: %d\n", ret);
return ret;
}
}
if (opp_table->set_opp) {
ret = _set_opp_custom(opp_table, dev, opp, freq);
} else if (opp_table->regulators) {
ret = _generic_set_opp_regulator(opp_table, dev, opp, freq,
scaling_down);
} else {
/* Only frequency scaling */
ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
if (opp_table->config_regulators) {
ret = opp_table->config_regulators(dev, old_opp, opp,
opp_table->regulators,
opp_table->regulator_count);
if (ret) {
dev_err(dev, "Failed to set regulator voltages: %d\n",
ret);
return ret;
}
}
}
if (ret)
return ret;
if (opp_table->config_clks) {
ret = opp_table->config_clks(dev, opp_table, opp, clk_data, scaling_down);
if (ret)
return ret;
}
/* Scaling down? Configure required OPPs after frequency */
if (scaling_down) {
if (opp_table->config_regulators) {
ret = opp_table->config_regulators(dev, old_opp, opp,
opp_table->regulators,
opp_table->regulator_count);
if (ret) {
dev_err(dev, "Failed to set regulator voltages: %d\n",
ret);
return ret;
}
}
ret = _set_opp_bw(opp_table, opp, dev);
if (ret) {
dev_err(dev, "Failed to set bw: %d\n", ret);
......@@ -1217,7 +1158,6 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table,
/* Make sure current_opp doesn't get freed */
dev_pm_opp_get(opp);
opp_table->current_opp = opp;
opp_table->current_rate = freq;
return ret;
}
......@@ -1238,6 +1178,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
struct opp_table *opp_table;
unsigned long freq = 0, temp_freq;
struct dev_pm_opp *opp = NULL;
bool forced = false;
int ret;
opp_table = _find_opp_table(dev);
......@@ -1255,7 +1196,8 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
* equivalent to a clk_set_rate()
*/
if (!_get_opp_count(opp_table)) {
ret = _generic_set_opp_clk_only(dev, opp_table->clk, target_freq);
ret = opp_table->config_clks(dev, opp_table, NULL,
&target_freq, false);
goto put_opp_table;
}
......@@ -1276,12 +1218,22 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
__func__, freq, ret);
goto put_opp_table;
}
/*
* An OPP entry specifies the highest frequency at which other
* properties of the OPP entry apply. Even if the new OPP is
* same as the old one, we may still reach here for a different
* value of the frequency. In such a case, do not abort but
* configure the hardware to the desired frequency forcefully.
*/
forced = opp_table->rate_clk_single != target_freq;
}
ret = _set_opp(dev, opp_table, opp, freq);
ret = _set_opp(dev, opp_table, opp, &target_freq, forced);
if (target_freq)
dev_pm_opp_put(opp);
put_opp_table:
dev_pm_opp_put_opp_table(opp_table);
return ret;
......@@ -1309,7 +1261,7 @@ int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
return PTR_ERR(opp_table);
}
ret = _set_opp(dev, opp_table, opp, opp ? opp->rate : 0);
ret = _set_opp(dev, opp_table, opp, NULL, false);
dev_pm_opp_put_opp_table(opp_table);
return ret;
......@@ -1366,6 +1318,8 @@ static struct opp_table *_allocate_opp_table(struct device *dev, int index)
INIT_LIST_HEAD(&opp_table->dev_list);
INIT_LIST_HEAD(&opp_table->lazy);
opp_table->clk = ERR_PTR(-ENODEV);
/* Mark regulator count uninitialized */
opp_table->regulator_count = -1;
......@@ -1412,20 +1366,38 @@ static struct opp_table *_update_opp_table_clk(struct device *dev,
int ret;
/*
* Return early if we don't need to get clk or we have already tried it
* Return early if we don't need to get clk or we have already done it
* earlier.
*/
if (!getclk || IS_ERR(opp_table) || opp_table->clk)
if (!getclk || IS_ERR(opp_table) || !IS_ERR(opp_table->clk) ||
opp_table->clks)
return opp_table;
/* Find clk for the device */
opp_table->clk = clk_get(dev, NULL);
ret = PTR_ERR_OR_ZERO(opp_table->clk);
if (!ret)
if (!ret) {
opp_table->config_clks = _opp_config_clk_single;
opp_table->clk_count = 1;
return opp_table;
}
if (ret == -ENOENT) {
/*
* There are few platforms which don't want the OPP core to
* manage device's clock settings. In such cases neither the
* platform provides the clks explicitly to us, nor the DT
* contains a valid clk entry. The OPP nodes in DT may still
* contain "opp-hz" property though, which we need to parse and
* allow the platform to find an OPP based on freq later on.
*
* This is a simple solution to take care of such corner cases,
* i.e. make the clk_count 1, which lets us allocate space for
* frequency in opp->rates and also parse the entries in DT.
*/
opp_table->clk_count = 1;
dev_dbg(dev, "%s: Couldn't find clock: %d\n", __func__, ret);
return opp_table;
}
......@@ -1528,7 +1500,7 @@ static void _opp_table_kref_release(struct kref *kref)
_of_clear_opp_table(opp_table);
/* Release clk */
/* Release automatically acquired single clk */
if (!IS_ERR(opp_table->clk))
clk_put(opp_table->clk);
......@@ -1581,7 +1553,7 @@ static void _opp_kref_release(struct kref *kref)
* frequency/voltage list.
*/
blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_REMOVE, opp);
_of_opp_free_required_opps(opp_table, opp);
_of_clear_opp(opp_table, opp);
opp_debug_remove_one(opp);
kfree(opp);
}
......@@ -1613,10 +1585,13 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq)
if (IS_ERR(opp_table))
return;
if (!assert_single_clk(opp_table))
goto put_table;
mutex_lock(&opp_table->lock);
list_for_each_entry(iter, &opp_table->opp_list, node) {
if (iter->rate == freq) {
if (iter->rates[0] == freq) {
opp = iter;
break;
}
......@@ -1634,6 +1609,7 @@ void dev_pm_opp_remove(struct device *dev, unsigned long freq)
__func__, freq);
}
put_table:
/* Drop the reference taken by _find_opp_table() */
dev_pm_opp_put_opp_table(opp_table);
}
......@@ -1720,26 +1696,31 @@ void dev_pm_opp_remove_all_dynamic(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_remove_all_dynamic);
struct dev_pm_opp *_opp_allocate(struct opp_table *table)
struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table)
{
struct dev_pm_opp *opp;
int supply_count, supply_size, icc_size;
int supply_count, supply_size, icc_size, clk_size;
/* Allocate space for at least one supply */
supply_count = table->regulator_count > 0 ? table->regulator_count : 1;
supply_count = opp_table->regulator_count > 0 ?
opp_table->regulator_count : 1;
supply_size = sizeof(*opp->supplies) * supply_count;
icc_size = sizeof(*opp->bandwidth) * table->path_count;
clk_size = sizeof(*opp->rates) * opp_table->clk_count;
icc_size = sizeof(*opp->bandwidth) * opp_table->path_count;
/* allocate new OPP node and supplies structures */
opp = kzalloc(sizeof(*opp) + supply_size + icc_size, GFP_KERNEL);
opp = kzalloc(sizeof(*opp) + supply_size + clk_size + icc_size, GFP_KERNEL);
if (!opp)
return NULL;
/* Put the supplies at the end of the OPP structure as an empty array */
/* Put the supplies, bw and clock at the end of the OPP structure */
opp->supplies = (struct dev_pm_opp_supply *)(opp + 1);
opp->rates = (unsigned long *)(opp->supplies + supply_count);
if (icc_size)
opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->supplies + supply_count);
opp->bandwidth = (struct dev_pm_opp_icc_bw *)(opp->rates + opp_table->clk_count);
INIT_LIST_HEAD(&opp->node);
return opp;
......@@ -1770,15 +1751,57 @@ static bool _opp_supported_by_regulators(struct dev_pm_opp *opp,
return true;
}
int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2)
static int _opp_compare_rate(struct opp_table *opp_table,
struct dev_pm_opp *opp1, struct dev_pm_opp *opp2)
{
if (opp1->rate != opp2->rate)
return opp1->rate < opp2->rate ? -1 : 1;
if (opp1->bandwidth && opp2->bandwidth &&
opp1->bandwidth[0].peak != opp2->bandwidth[0].peak)
return opp1->bandwidth[0].peak < opp2->bandwidth[0].peak ? -1 : 1;
int i;
for (i = 0; i < opp_table->clk_count; i++) {
if (opp1->rates[i] != opp2->rates[i])
return opp1->rates[i] < opp2->rates[i] ? -1 : 1;
}
/* Same rates for both OPPs */
return 0;
}
static int _opp_compare_bw(struct opp_table *opp_table, struct dev_pm_opp *opp1,
struct dev_pm_opp *opp2)
{
int i;
for (i = 0; i < opp_table->path_count; i++) {
if (opp1->bandwidth[i].peak != opp2->bandwidth[i].peak)
return opp1->bandwidth[i].peak < opp2->bandwidth[i].peak ? -1 : 1;
}
/* Same bw for both OPPs */
return 0;
}
/*
* Returns
* 0: opp1 == opp2
* 1: opp1 > opp2
* -1: opp1 < opp2
*/
int _opp_compare_key(struct opp_table *opp_table, struct dev_pm_opp *opp1,
struct dev_pm_opp *opp2)
{
int ret;
ret = _opp_compare_rate(opp_table, opp1, opp2);
if (ret)
return ret;
ret = _opp_compare_bw(opp_table, opp1, opp2);
if (ret)
return ret;
if (opp1->level != opp2->level)
return opp1->level < opp2->level ? -1 : 1;
/* Duplicate OPPs */
return 0;
}
......@@ -1798,7 +1821,7 @@ static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp,
* loop.
*/
list_for_each_entry(opp, &opp_table->opp_list, node) {
opp_cmp = _opp_compare_key(new_opp, opp);
opp_cmp = _opp_compare_key(opp_table, new_opp, opp);
if (opp_cmp > 0) {
*head = &opp->node;
continue;
......@@ -1809,8 +1832,8 @@ static int _opp_is_duplicate(struct device *dev, struct dev_pm_opp *new_opp,
/* Duplicate OPPs */
dev_warn(dev, "%s: duplicate OPPs detected. Existing: freq: %lu, volt: %lu, enabled: %d. New: freq: %lu, volt: %lu, enabled: %d\n",
__func__, opp->rate, opp->supplies[0].u_volt,
opp->available, new_opp->rate,
__func__, opp->rates[0], opp->supplies[0].u_volt,
opp->available, new_opp->rates[0],
new_opp->supplies[0].u_volt, new_opp->available);
/* Should we compare voltages for all regulators here ? */
......@@ -1831,7 +1854,7 @@ void _required_opps_available(struct dev_pm_opp *opp, int count)
opp->available = false;
pr_warn("%s: OPP not supported by required OPP %pOF (%lu)\n",
__func__, opp->required_opps[i]->np, opp->rate);
__func__, opp->required_opps[i]->np, opp->rates[0]);
return;
}
}
......@@ -1847,7 +1870,7 @@ void _required_opps_available(struct dev_pm_opp *opp, int count)
* should be considered an error by the callers of _opp_add().
*/
int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
struct opp_table *opp_table, bool rate_not_available)
struct opp_table *opp_table)
{
struct list_head *head;
int ret;
......@@ -1872,7 +1895,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
if (!_opp_supported_by_regulators(new_opp, opp_table)) {
new_opp->available = false;
dev_warn(dev, "%s: OPP not supported by regulators (%lu)\n",
__func__, new_opp->rate);
__func__, new_opp->rates[0]);
}
/* required-opps not fully initialized yet */
......@@ -1913,12 +1936,15 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
unsigned long tol;
int ret;
if (!assert_single_clk(opp_table))
return -EINVAL;
new_opp = _opp_allocate(opp_table);
if (!new_opp)
return -ENOMEM;
/* populate the opp table */
new_opp->rate = freq;
new_opp->rates[0] = freq;
tol = u_volt * opp_table->voltage_tolerance_v1 / 100;
new_opp->supplies[0].u_volt = u_volt;
new_opp->supplies[0].u_volt_min = u_volt - tol;
......@@ -1926,7 +1952,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
new_opp->available = true;
new_opp->dynamic = dynamic;
ret = _opp_add(dev, new_opp, opp_table, false);
ret = _opp_add(dev, new_opp, opp_table);
if (ret) {
/* Don't return error for duplicate OPPs */
if (ret == -EBUSY)
......@@ -1948,7 +1974,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
}
/**
* dev_pm_opp_set_supported_hw() - Set supported platforms
* _opp_set_supported_hw() - Set supported platforms
* @dev: Device for which supported-hw has to be set.
* @versions: Array of hierarchy of versions to match.
* @count: Number of elements in the array.
......@@ -1958,87 +1984,42 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
* OPPs, which are available for those versions, based on its 'opp-supported-hw'
* property.
*/
struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
const u32 *versions, unsigned int count)
static int _opp_set_supported_hw(struct opp_table *opp_table,
const u32 *versions, unsigned int count)
{
struct opp_table *opp_table;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
/* Make sure there are no concurrent readers while updating opp_table */
WARN_ON(!list_empty(&opp_table->opp_list));
/* Another CPU that shares the OPP table has set the property ? */
if (opp_table->supported_hw)
return opp_table;
return 0;
opp_table->supported_hw = kmemdup(versions, count * sizeof(*versions),
GFP_KERNEL);
if (!opp_table->supported_hw) {
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(-ENOMEM);
}
if (!opp_table->supported_hw)
return -ENOMEM;
opp_table->supported_hw_count = count;
return opp_table;
return 0;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_supported_hw);
/**
* dev_pm_opp_put_supported_hw() - Releases resources blocked for supported hw
* @opp_table: OPP table returned by dev_pm_opp_set_supported_hw().
* _opp_put_supported_hw() - Releases resources blocked for supported hw
* @opp_table: OPP table returned by _opp_set_supported_hw().
*
* This is required only for the V2 bindings, and is called for a matching
* dev_pm_opp_set_supported_hw(). Until this is called, the opp_table structure
* _opp_set_supported_hw(). Until this is called, the opp_table structure
* will not be freed.
*/
void dev_pm_opp_put_supported_hw(struct opp_table *opp_table)
{
if (unlikely(!opp_table))
return;
kfree(opp_table->supported_hw);
opp_table->supported_hw = NULL;
opp_table->supported_hw_count = 0;
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_supported_hw);
static void devm_pm_opp_supported_hw_release(void *data)
{
dev_pm_opp_put_supported_hw(data);
}
/**
* devm_pm_opp_set_supported_hw() - Set supported platforms
* @dev: Device for which supported-hw has to be set.
* @versions: Array of hierarchy of versions to match.
* @count: Number of elements in the array.
*
* This is a resource-managed variant of dev_pm_opp_set_supported_hw().
*
* Return: 0 on success and errorno otherwise.
*/
int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
unsigned int count)
static void _opp_put_supported_hw(struct opp_table *opp_table)
{
struct opp_table *opp_table;
opp_table = dev_pm_opp_set_supported_hw(dev, versions, count);
if (IS_ERR(opp_table))
return PTR_ERR(opp_table);
return devm_add_action_or_reset(dev, devm_pm_opp_supported_hw_release,
opp_table);
if (opp_table->supported_hw) {
kfree(opp_table->supported_hw);
opp_table->supported_hw = NULL;
opp_table->supported_hw_count = 0;
}
}
EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
/**
* dev_pm_opp_set_prop_name() - Set prop-extn name
* _opp_set_prop_name() - Set prop-extn name
* @dev: Device for which the prop-name has to be set.
* @name: name to postfix to properties.
*
......@@ -2047,53 +2028,36 @@ EXPORT_SYMBOL_GPL(devm_pm_opp_set_supported_hw);
* which the extension will apply are opp-microvolt and opp-microamp. OPP core
* should postfix the property name with -<name> while looking for them.
*/
struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
static int _opp_set_prop_name(struct opp_table *opp_table, const char *name)
{
struct opp_table *opp_table;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
/* Make sure there are no concurrent readers while updating opp_table */
WARN_ON(!list_empty(&opp_table->opp_list));
/* Another CPU that shares the OPP table has set the property ? */
if (opp_table->prop_name)
return opp_table;
opp_table->prop_name = kstrdup(name, GFP_KERNEL);
if (!opp_table->prop_name) {
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(-ENOMEM);
opp_table->prop_name = kstrdup(name, GFP_KERNEL);
if (!opp_table->prop_name)
return -ENOMEM;
}
return opp_table;
return 0;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_prop_name);
/**
* dev_pm_opp_put_prop_name() - Releases resources blocked for prop-name
* @opp_table: OPP table returned by dev_pm_opp_set_prop_name().
* _opp_put_prop_name() - Releases resources blocked for prop-name
* @opp_table: OPP table returned by _opp_set_prop_name().
*
* This is required only for the V2 bindings, and is called for a matching
* dev_pm_opp_set_prop_name(). Until this is called, the opp_table structure
* _opp_set_prop_name(). Until this is called, the opp_table structure
* will not be freed.
*/
void dev_pm_opp_put_prop_name(struct opp_table *opp_table)
static void _opp_put_prop_name(struct opp_table *opp_table)
{
if (unlikely(!opp_table))
return;
kfree(opp_table->prop_name);
opp_table->prop_name = NULL;
dev_pm_opp_put_opp_table(opp_table);
if (opp_table->prop_name) {
kfree(opp_table->prop_name);
opp_table->prop_name = NULL;
}
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
/**
* dev_pm_opp_set_regulators() - Set regulator names for the device
* _opp_set_regulators() - Set regulator names for the device
* @dev: Device for which regulator name is being set.
* @names: Array of pointers to the names of the regulator.
* @count: Number of regulators.
......@@ -2104,36 +2068,29 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_put_prop_name);
*
* This must be called before any OPPs are initialized for the device.
*/
struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
const char * const names[],
unsigned int count)
static int _opp_set_regulators(struct opp_table *opp_table, struct device *dev,
const char * const names[])
{
struct dev_pm_opp_supply *supplies;
struct opp_table *opp_table;
const char * const *temp = names;
struct regulator *reg;
int ret, i;
int count = 0, ret, i;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
/* Count number of regulators */
while (*temp++)
count++;
/* This should be called before OPPs are initialized */
if (WARN_ON(!list_empty(&opp_table->opp_list))) {
ret = -EBUSY;
goto err;
}
if (!count)
return -EINVAL;
/* Another CPU that shares the OPP table has set the regulators ? */
if (opp_table->regulators)
return opp_table;
return 0;
opp_table->regulators = kmalloc_array(count,
sizeof(*opp_table->regulators),
GFP_KERNEL);
if (!opp_table->regulators) {
ret = -ENOMEM;
goto err;
}
if (!opp_table->regulators)
return -ENOMEM;
for (i = 0; i < count; i++) {
reg = regulator_get_optional(dev, names[i]);
......@@ -2149,21 +2106,11 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
opp_table->regulator_count = count;
supplies = kmalloc_array(count * 2, sizeof(*supplies), GFP_KERNEL);
if (!supplies) {
ret = -ENOMEM;
goto free_regulators;
}
mutex_lock(&opp_table->lock);
opp_table->sod_supplies = supplies;
if (opp_table->set_opp_data) {
opp_table->set_opp_data->old_opp.supplies = supplies;
opp_table->set_opp_data->new_opp.supplies = supplies + count;
}
mutex_unlock(&opp_table->lock);
/* Set generic config_regulators() for single regulators here */
if (count == 1)
opp_table->config_regulators = _opp_config_regulator_single;
return opp_table;
return 0;
free_regulators:
while (i != 0)
......@@ -2172,26 +2119,20 @@ struct opp_table *dev_pm_opp_set_regulators(struct device *dev,
kfree(opp_table->regulators);
opp_table->regulators = NULL;
opp_table->regulator_count = -1;
err:
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(ret);
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_regulators);
/**
* dev_pm_opp_put_regulators() - Releases resources blocked for regulator
* @opp_table: OPP table returned from dev_pm_opp_set_regulators().
* _opp_put_regulators() - Releases resources blocked for regulator
* @opp_table: OPP table returned from _opp_set_regulators().
*/
void dev_pm_opp_put_regulators(struct opp_table *opp_table)
static void _opp_put_regulators(struct opp_table *opp_table)
{
int i;
if (unlikely(!opp_table))
return;
if (!opp_table->regulators)
goto put_opp_table;
return;
if (opp_table->enabled) {
for (i = opp_table->regulator_count - 1; i >= 0; i--)
......@@ -2201,252 +2142,158 @@ void dev_pm_opp_put_regulators(struct opp_table *opp_table)
for (i = opp_table->regulator_count - 1; i >= 0; i--)
regulator_put(opp_table->regulators[i]);
mutex_lock(&opp_table->lock);
if (opp_table->set_opp_data) {
opp_table->set_opp_data->old_opp.supplies = NULL;
opp_table->set_opp_data->new_opp.supplies = NULL;
}
kfree(opp_table->sod_supplies);
opp_table->sod_supplies = NULL;
mutex_unlock(&opp_table->lock);
kfree(opp_table->regulators);
opp_table->regulators = NULL;
opp_table->regulator_count = -1;
put_opp_table:
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_regulators);
static void devm_pm_opp_regulators_release(void *data)
{
dev_pm_opp_put_regulators(data);
}
/**
* devm_pm_opp_set_regulators() - Set regulator names for the device
* @dev: Device for which regulator name is being set.
* @names: Array of pointers to the names of the regulator.
* @count: Number of regulators.
*
* This is a resource-managed variant of dev_pm_opp_set_regulators().
*
* Return: 0 on success and errorno otherwise.
*/
int devm_pm_opp_set_regulators(struct device *dev,
const char * const names[],
unsigned int count)
static void _put_clks(struct opp_table *opp_table, int count)
{
struct opp_table *opp_table;
int i;
opp_table = dev_pm_opp_set_regulators(dev, names, count);
if (IS_ERR(opp_table))
return PTR_ERR(opp_table);
for (i = count - 1; i >= 0; i--)
clk_put(opp_table->clks[i]);
return devm_add_action_or_reset(dev, devm_pm_opp_regulators_release,
opp_table);
kfree(opp_table->clks);
opp_table->clks = NULL;
}
EXPORT_SYMBOL_GPL(devm_pm_opp_set_regulators);
/**
* dev_pm_opp_set_clkname() - Set clk name for the device
* @dev: Device for which clk name is being set.
* @name: Clk name.
*
* In order to support OPP switching, OPP layer needs to get pointer to the
* clock for the device. Simple cases work fine without using this routine (i.e.
* by passing connection-id as NULL), but for a device with multiple clocks
* available, the OPP core needs to know the exact name of the clk to use.
* _opp_set_clknames() - Set clk names for the device
* @dev: Device for which clk names is being set.
* @names: Clk names.
*
* In order to support OPP switching, OPP layer needs to get pointers to the
* clocks for the device. Simple cases work fine without using this routine
* (i.e. by passing connection-id as NULL), but for a device with multiple
* clocks available, the OPP core needs to know the exact names of the clks to
* use.
*
* This must be called before any OPPs are initialized for the device.
*/
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
static int _opp_set_clknames(struct opp_table *opp_table, struct device *dev,
const char * const names[],
config_clks_t config_clks)
{
struct opp_table *opp_table;
int ret;
const char * const *temp = names;
int count = 0, ret, i;
struct clk *clk;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
/* Count number of clks */
while (*temp++)
count++;
/* This should be called before OPPs are initialized */
if (WARN_ON(!list_empty(&opp_table->opp_list))) {
ret = -EBUSY;
goto err;
}
/*
* This is a special case where we have a single clock, whose connection
* id name is NULL, i.e. first two entries are NULL in the array.
*/
if (!count && !names[1])
count = 1;
/* clk shouldn't be initialized at this point */
if (WARN_ON(opp_table->clk)) {
ret = -EBUSY;
goto err;
}
/* Fail early for invalid configurations */
if (!count || (!config_clks && count > 1))
return -EINVAL;
/* Find clk for the device */
opp_table->clk = clk_get(dev, name);
if (IS_ERR(opp_table->clk)) {
ret = dev_err_probe(dev, PTR_ERR(opp_table->clk),
"%s: Couldn't find clock\n", __func__);
goto err;
}
/* Another CPU that shares the OPP table has set the clkname ? */
if (opp_table->clks)
return 0;
return opp_table;
opp_table->clks = kmalloc_array(count, sizeof(*opp_table->clks),
GFP_KERNEL);
if (!opp_table->clks)
return -ENOMEM;
err:
dev_pm_opp_put_opp_table(opp_table);
/* Find clks for the device */
for (i = 0; i < count; i++) {
clk = clk_get(dev, names[i]);
if (IS_ERR(clk)) {
ret = dev_err_probe(dev, PTR_ERR(clk),
"%s: Couldn't find clock with name: %s\n",
__func__, names[i]);
goto free_clks;
}
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_clkname);
opp_table->clks[i] = clk;
}
/**
* dev_pm_opp_put_clkname() - Releases resources blocked for clk.
* @opp_table: OPP table returned from dev_pm_opp_set_clkname().
*/
void dev_pm_opp_put_clkname(struct opp_table *opp_table)
{
if (unlikely(!opp_table))
return;
opp_table->clk_count = count;
opp_table->config_clks = config_clks;
clk_put(opp_table->clk);
opp_table->clk = ERR_PTR(-EINVAL);
/* Set generic single clk set here */
if (count == 1) {
if (!opp_table->config_clks)
opp_table->config_clks = _opp_config_clk_single;
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_put_clkname);
/*
* We could have just dropped the "clk" field and used "clks"
* everywhere. Instead we kept the "clk" field around for
* following reasons:
*
* - avoiding clks[0] everywhere else.
* - not running single clk helpers for multiple clk usecase by
* mistake.
*
* Since this is single-clk case, just update the clk pointer
* too.
*/
opp_table->clk = opp_table->clks[0];
}
static void devm_pm_opp_clkname_release(void *data)
{
dev_pm_opp_put_clkname(data);
return 0;
free_clks:
_put_clks(opp_table, i);
return ret;
}
/**
* devm_pm_opp_set_clkname() - Set clk name for the device
* @dev: Device for which clk name is being set.
* @name: Clk name.
*
* This is a resource-managed variant of dev_pm_opp_set_clkname().
*
* Return: 0 on success and errorno otherwise.
* _opp_put_clknames() - Releases resources blocked for clks.
* @opp_table: OPP table returned from _opp_set_clknames().
*/
int devm_pm_opp_set_clkname(struct device *dev, const char *name)
static void _opp_put_clknames(struct opp_table *opp_table)
{
struct opp_table *opp_table;
if (!opp_table->clks)
return;
opp_table = dev_pm_opp_set_clkname(dev, name);
if (IS_ERR(opp_table))
return PTR_ERR(opp_table);
opp_table->config_clks = NULL;
opp_table->clk = ERR_PTR(-ENODEV);
return devm_add_action_or_reset(dev, devm_pm_opp_clkname_release,
opp_table);
_put_clks(opp_table, opp_table->clk_count);
}
EXPORT_SYMBOL_GPL(devm_pm_opp_set_clkname);
/**
* dev_pm_opp_register_set_opp_helper() - Register custom set OPP helper
* _opp_set_config_regulators_helper() - Register custom set regulator helper.
* @dev: Device for which the helper is getting registered.
* @set_opp: Custom set OPP helper.
* @config_regulators: Custom set regulator helper.
*
* This is useful to support complex platforms (like platforms with multiple
* regulators per device), instead of the generic OPP set rate helper.
* This is useful to support platforms with multiple regulators per device.
*
* This must be called before any OPPs are initialized for the device.
*/
struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
int (*set_opp)(struct dev_pm_set_opp_data *data))
static int _opp_set_config_regulators_helper(struct opp_table *opp_table,
struct device *dev, config_regulators_t config_regulators)
{
struct dev_pm_set_opp_data *data;
struct opp_table *opp_table;
if (!set_opp)
return ERR_PTR(-EINVAL);
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
/* This should be called before OPPs are initialized */
if (WARN_ON(!list_empty(&opp_table->opp_list))) {
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(-EBUSY);
}
/* Another CPU that shares the OPP table has set the helper ? */
if (opp_table->set_opp)
return opp_table;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
mutex_lock(&opp_table->lock);
opp_table->set_opp_data = data;
if (opp_table->sod_supplies) {
data->old_opp.supplies = opp_table->sod_supplies;
data->new_opp.supplies = opp_table->sod_supplies +
opp_table->regulator_count;
}
mutex_unlock(&opp_table->lock);
opp_table->set_opp = set_opp;
return opp_table;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_register_set_opp_helper);
/**
* dev_pm_opp_unregister_set_opp_helper() - Releases resources blocked for
* set_opp helper
* @opp_table: OPP table returned from dev_pm_opp_register_set_opp_helper().
*
* Release resources blocked for platform specific set_opp helper.
*/
void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table)
{
if (unlikely(!opp_table))
return;
opp_table->set_opp = NULL;
if (!opp_table->config_regulators)
opp_table->config_regulators = config_regulators;
mutex_lock(&opp_table->lock);
kfree(opp_table->set_opp_data);
opp_table->set_opp_data = NULL;
mutex_unlock(&opp_table->lock);
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_unregister_set_opp_helper);
static void devm_pm_opp_unregister_set_opp_helper(void *data)
{
dev_pm_opp_unregister_set_opp_helper(data);
return 0;
}
/**
* devm_pm_opp_register_set_opp_helper() - Register custom set OPP helper
* @dev: Device for which the helper is getting registered.
* @set_opp: Custom set OPP helper.
*
* This is a resource-managed version of dev_pm_opp_register_set_opp_helper().
* _opp_put_config_regulators_helper() - Releases resources blocked for
* config_regulators helper.
* @opp_table: OPP table returned from _opp_set_config_regulators_helper().
*
* Return: 0 on success and errorno otherwise.
* Release resources blocked for platform specific config_regulators helper.
*/
int devm_pm_opp_register_set_opp_helper(struct device *dev,
int (*set_opp)(struct dev_pm_set_opp_data *data))
static void _opp_put_config_regulators_helper(struct opp_table *opp_table)
{
struct opp_table *opp_table;
opp_table = dev_pm_opp_register_set_opp_helper(dev, set_opp);
if (IS_ERR(opp_table))
return PTR_ERR(opp_table);
return devm_add_action_or_reset(dev, devm_pm_opp_unregister_set_opp_helper,
opp_table);
if (opp_table->config_regulators)
opp_table->config_regulators = NULL;
}
EXPORT_SYMBOL_GPL(devm_pm_opp_register_set_opp_helper);
static void _opp_detach_genpd(struct opp_table *opp_table)
static void _detach_genpd(struct opp_table *opp_table)
{
int index;
......@@ -2466,7 +2313,7 @@ static void _opp_detach_genpd(struct opp_table *opp_table)
}
/**
* dev_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
* _opp_attach_genpd - Attach genpd(s) for the device and save virtual device pointer
* @dev: Consumer device for which the genpd is getting attached.
* @names: Null terminated array of pointers containing names of genpd to attach.
* @virt_devs: Pointer to return the array of virtual devices.
......@@ -2487,30 +2334,23 @@ static void _opp_detach_genpd(struct opp_table *opp_table)
* The order of entries in the names array must match the order in which
* "required-opps" are added in DT.
*/
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
const char * const *names, struct device ***virt_devs)
static int _opp_attach_genpd(struct opp_table *opp_table, struct device *dev,
const char * const *names, struct device ***virt_devs)
{
struct opp_table *opp_table;
struct device *virt_dev;
int index = 0, ret = -EINVAL;
const char * const *name = names;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table))
return opp_table;
if (opp_table->genpd_virt_devs)
return opp_table;
return 0;
/*
* If the genpd's OPP table isn't already initialized, parsing of the
* required-opps fail for dev. We should retry this after genpd's OPP
* table is added.
*/
if (!opp_table->required_opp_count) {
ret = -EPROBE_DEFER;
goto put_table;
}
if (!opp_table->required_opp_count)
return -EPROBE_DEFER;
mutex_lock(&opp_table->genpd_virt_dev_lock);
......@@ -2528,8 +2368,8 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
}
virt_dev = dev_pm_domain_attach_by_name(dev, *name);
if (IS_ERR(virt_dev)) {
ret = PTR_ERR(virt_dev);
if (IS_ERR_OR_NULL(virt_dev)) {
ret = PTR_ERR(virt_dev) ? : -ENODEV;
dev_err(dev, "Couldn't attach to pm_domain: %d\n", ret);
goto err;
}
......@@ -2543,73 +2383,230 @@ struct opp_table *dev_pm_opp_attach_genpd(struct device *dev,
*virt_devs = opp_table->genpd_virt_devs;
mutex_unlock(&opp_table->genpd_virt_dev_lock);
return opp_table;
return 0;
err:
_opp_detach_genpd(opp_table);
_detach_genpd(opp_table);
unlock:
mutex_unlock(&opp_table->genpd_virt_dev_lock);
return ret;
put_table:
dev_pm_opp_put_opp_table(opp_table);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_attach_genpd);
/**
* dev_pm_opp_detach_genpd() - Detach genpd(s) from the device.
* @opp_table: OPP table returned by dev_pm_opp_attach_genpd().
* _opp_detach_genpd() - Detach genpd(s) from the device.
* @opp_table: OPP table returned by _opp_attach_genpd().
*
* This detaches the genpd(s), resets the virtual device pointers, and puts the
* OPP table.
*/
void dev_pm_opp_detach_genpd(struct opp_table *opp_table)
static void _opp_detach_genpd(struct opp_table *opp_table)
{
if (unlikely(!opp_table))
return;
/*
* Acquire genpd_virt_dev_lock to make sure virt_dev isn't getting
* used in parallel.
*/
mutex_lock(&opp_table->genpd_virt_dev_lock);
_opp_detach_genpd(opp_table);
_detach_genpd(opp_table);
mutex_unlock(&opp_table->genpd_virt_dev_lock);
dev_pm_opp_put_opp_table(opp_table);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_detach_genpd);
static void devm_pm_opp_detach_genpd(void *data)
static void _opp_clear_config(struct opp_config_data *data)
{
dev_pm_opp_detach_genpd(data);
if (data->flags & OPP_CONFIG_GENPD)
_opp_detach_genpd(data->opp_table);
if (data->flags & OPP_CONFIG_REGULATOR)
_opp_put_regulators(data->opp_table);
if (data->flags & OPP_CONFIG_SUPPORTED_HW)
_opp_put_supported_hw(data->opp_table);
if (data->flags & OPP_CONFIG_REGULATOR_HELPER)
_opp_put_config_regulators_helper(data->opp_table);
if (data->flags & OPP_CONFIG_PROP_NAME)
_opp_put_prop_name(data->opp_table);
if (data->flags & OPP_CONFIG_CLK)
_opp_put_clknames(data->opp_table);
dev_pm_opp_put_opp_table(data->opp_table);
kfree(data);
}
/**
* devm_pm_opp_attach_genpd - Attach genpd(s) for the device and save virtual
* device pointer
* @dev: Consumer device for which the genpd is getting attached.
* @names: Null terminated array of pointers containing names of genpd to attach.
* @virt_devs: Pointer to return the array of virtual devices.
* dev_pm_opp_set_config() - Set OPP configuration for the device.
* @dev: Device for which configuration is being set.
* @config: OPP configuration.
*
* This is a resource-managed version of dev_pm_opp_attach_genpd().
* This allows all device OPP configurations to be performed at once.
*
* Return: 0 on success and errorno otherwise.
* This must be called before any OPPs are initialized for the device. This may
* be called multiple times for the same OPP table, for example once for each
* CPU that share the same table. This must be balanced by the same number of
* calls to dev_pm_opp_clear_config() in order to free the OPP table properly.
*
* This returns a token to the caller, which must be passed to
* dev_pm_opp_clear_config() to free the resources later. The value of the
* returned token will be >= 1 for success and negative for errors. The minimum
* value of 1 is chosen here to make it easy for callers to manage the resource.
*/
int devm_pm_opp_attach_genpd(struct device *dev, const char * const *names,
struct device ***virt_devs)
int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
struct opp_table *opp_table;
struct opp_config_data *data;
unsigned int id;
int ret;
opp_table = dev_pm_opp_attach_genpd(dev, names, virt_devs);
if (IS_ERR(opp_table))
data = kmalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
opp_table = _add_opp_table(dev, false);
if (IS_ERR(opp_table)) {
kfree(data);
return PTR_ERR(opp_table);
}
data->opp_table = opp_table;
data->flags = 0;
/* This should be called before OPPs are initialized */
if (WARN_ON(!list_empty(&opp_table->opp_list))) {
ret = -EBUSY;
goto err;
}
/* Configure clocks */
if (config->clk_names) {
ret = _opp_set_clknames(opp_table, dev, config->clk_names,
config->config_clks);
if (ret)
goto err;
data->flags |= OPP_CONFIG_CLK;
} else if (config->config_clks) {
/* Don't allow config callback without clocks */
ret = -EINVAL;
goto err;
}
/* Configure property names */
if (config->prop_name) {
ret = _opp_set_prop_name(opp_table, config->prop_name);
if (ret)
goto err;
data->flags |= OPP_CONFIG_PROP_NAME;
}
/* Configure config_regulators helper */
if (config->config_regulators) {
ret = _opp_set_config_regulators_helper(opp_table, dev,
config->config_regulators);
if (ret)
goto err;
data->flags |= OPP_CONFIG_REGULATOR_HELPER;
}
/* Configure supported hardware */
if (config->supported_hw) {
ret = _opp_set_supported_hw(opp_table, config->supported_hw,
config->supported_hw_count);
if (ret)
goto err;
data->flags |= OPP_CONFIG_SUPPORTED_HW;
}
/* Configure supplies */
if (config->regulator_names) {
ret = _opp_set_regulators(opp_table, dev,
config->regulator_names);
if (ret)
goto err;
data->flags |= OPP_CONFIG_REGULATOR;
}
/* Attach genpds */
if (config->genpd_names) {
ret = _opp_attach_genpd(opp_table, dev, config->genpd_names,
config->virt_devs);
if (ret)
goto err;
data->flags |= OPP_CONFIG_GENPD;
}
ret = xa_alloc(&opp_configs, &id, data, XA_LIMIT(1, INT_MAX),
GFP_KERNEL);
if (ret)
goto err;
return id;
err:
_opp_clear_config(data);
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_set_config);
/**
* dev_pm_opp_clear_config() - Releases resources blocked for OPP configuration.
* @opp_table: OPP table returned from dev_pm_opp_set_config().
*
* This allows all device OPP configurations to be cleared at once. This must be
* called once for each call made to dev_pm_opp_set_config(), in order to free
* the OPPs properly.
*
* Currently the first call itself ends up freeing all the OPP configurations,
* while the later ones only drop the OPP table reference. This works well for
* now as we would never want to use an half initialized OPP table and want to
* remove the configurations together.
*/
void dev_pm_opp_clear_config(int token)
{
struct opp_config_data *data;
/*
* This lets the callers call this unconditionally and keep their code
* simple.
*/
if (unlikely(token <= 0))
return;
data = xa_erase(&opp_configs, token);
if (WARN_ON(!data))
return;
_opp_clear_config(data);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_clear_config);
static void devm_pm_opp_config_release(void *token)
{
dev_pm_opp_clear_config((unsigned long)token);
}
/**
* devm_pm_opp_set_config() - Set OPP configuration for the device.
* @dev: Device for which configuration is being set.
* @config: OPP configuration.
*
* This allows all device OPP configurations to be performed at once.
* This is a resource-managed variant of dev_pm_opp_set_config().
*
* Return: 0 on success and errorno otherwise.
*/
int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
int token = dev_pm_opp_set_config(dev, config);
return devm_add_action_or_reset(dev, devm_pm_opp_detach_genpd,
opp_table);
if (token < 0)
return token;
return devm_add_action_or_reset(dev, devm_pm_opp_config_release,
(void *) ((unsigned long) token));
}
EXPORT_SYMBOL_GPL(devm_pm_opp_attach_genpd);
EXPORT_SYMBOL_GPL(devm_pm_opp_set_config);
/**
* dev_pm_opp_xlate_required_opp() - Find required OPP for @src_table OPP.
......@@ -2795,11 +2792,16 @@ static int _opp_set_availability(struct device *dev, unsigned long freq,
return r;
}
if (!assert_single_clk(opp_table)) {
r = -EINVAL;
goto put_table;
}
mutex_lock(&opp_table->lock);
/* Do we have the frequency? */
list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
if (tmp_opp->rate == freq) {
if (tmp_opp->rates[0] == freq) {
opp = tmp_opp;
break;
}
......@@ -2866,11 +2868,16 @@ int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
return r;
}
if (!assert_single_clk(opp_table)) {
r = -EINVAL;
goto put_table;
}
mutex_lock(&opp_table->lock);
/* Do we have the frequency? */
list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
if (tmp_opp->rate == freq) {
if (tmp_opp->rates[0] == freq) {
opp = tmp_opp;
break;
}
......@@ -2897,11 +2904,11 @@ int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
opp);
dev_pm_opp_put(opp);
goto adjust_put_table;
goto put_table;
adjust_unlock:
mutex_unlock(&opp_table->lock);
adjust_put_table:
put_table:
dev_pm_opp_put_opp_table(opp_table);
return r;
}
......
drivers/opp/cpu.c
View file @ c4f5a40b
......@@ -41,7 +41,7 @@
* the table if any of the mentioned functions have been invoked in the interim.
*/
int dev_pm_opp_init_cpufreq_table(struct device *dev,
struct cpufreq_frequency_table **table)
struct cpufreq_frequency_table **opp_table)
{
struct dev_pm_opp *opp;
struct cpufreq_frequency_table *freq_table = NULL;
......@@ -76,7 +76,7 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev,
freq_table[i].driver_data = i;
freq_table[i].frequency = CPUFREQ_TABLE_END;
*table = &freq_table[0];
*opp_table = &freq_table[0];
out:
if (ret)
......@@ -94,13 +94,13 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
* Free up the table allocated by dev_pm_opp_init_cpufreq_table
*/
void dev_pm_opp_free_cpufreq_table(struct device *dev,
struct cpufreq_frequency_table **table)
struct cpufreq_frequency_table **opp_table)
{
if (!table)
if (!opp_table)
return;
kfree(*table);
*table = NULL;
kfree(*opp_table);
*opp_table = NULL;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
#endif /* CONFIG_CPU_FREQ */
......
drivers/opp/debugfs.c
View file @ c4f5a40b
......@@ -74,6 +74,24 @@ static void opp_debug_create_bw(struct dev_pm_opp *opp,
}
}
static void opp_debug_create_clks(struct dev_pm_opp *opp,
struct opp_table *opp_table,
struct dentry *pdentry)
{
char name[12];
int i;
if (opp_table->clk_count == 1) {
debugfs_create_ulong("rate_hz", S_IRUGO, pdentry, &opp->rates[0]);
return;
}
for (i = 0; i < opp_table->clk_count; i++) {
snprintf(name, sizeof(name), "rate_hz_%d", i);
debugfs_create_ulong(name, S_IRUGO, pdentry, &opp->rates[i]);
}
}
static void opp_debug_create_supplies(struct dev_pm_opp *opp,
struct opp_table *opp_table,
struct dentry *pdentry)
......@@ -117,10 +135,11 @@ void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
* Get directory name for OPP.
*
* - Normally rate is unique to each OPP, use it to get unique opp-name.
* - For some devices rate isn't available, use index instead.
* - For some devices rate isn't available or there are multiple, use
* index instead for them.
*/
if (likely(opp->rate))
id = opp->rate;
if (likely(opp_table->clk_count == 1 && opp->rates[0]))
id = opp->rates[0];
else
id = _get_opp_count(opp_table);
......@@ -134,7 +153,6 @@ void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
debugfs_create_bool("turbo", S_IRUGO, d, &opp->turbo);
debugfs_create_bool("suspend", S_IRUGO, d, &opp->suspend);
debugfs_create_u32("performance_state", S_IRUGO, d, &opp->pstate);
debugfs_create_ulong("rate_hz", S_IRUGO, d, &opp->rate);
debugfs_create_u32("level", S_IRUGO, d, &opp->level);
debugfs_create_ulong("clock_latency_ns", S_IRUGO, d,
&opp->clock_latency_ns);
......@@ -142,6 +160,7 @@ void opp_debug_create_one(struct dev_pm_opp *opp, struct opp_table *opp_table)
opp->of_name = of_node_full_name(opp->np);
debugfs_create_str("of_name", S_IRUGO, d, (char **)&opp->of_name);
opp_debug_create_clks(opp, opp_table, d);
opp_debug_create_supplies(opp, opp_table, d);
opp_debug_create_bw(opp, opp_table, d);
......
drivers/opp/of.c
View file @ c4f5a40b
......@@ -242,20 +242,20 @@ void _of_init_opp_table(struct opp_table *opp_table, struct device *dev,
opp_table->np = opp_np;
_opp_table_alloc_required_tables(opp_table, dev, opp_np);
of_node_put(opp_np);
}
void _of_clear_opp_table(struct opp_table *opp_table)
{
_opp_table_free_required_tables(opp_table);
of_node_put(opp_table->np);
}
/*
* Release all resources previously acquired with a call to
* _of_opp_alloc_required_opps().
*/
void _of_opp_free_required_opps(struct opp_table *opp_table,
struct dev_pm_opp *opp)
static void _of_opp_free_required_opps(struct opp_table *opp_table,
struct dev_pm_opp *opp)
{
struct dev_pm_opp **required_opps = opp->required_opps;
int i;
......@@ -275,6 +275,12 @@ void _of_opp_free_required_opps(struct opp_table *opp_table,
kfree(required_opps);
}
void _of_clear_opp(struct opp_table *opp_table, struct dev_pm_opp *opp)
{
_of_opp_free_required_opps(opp_table, opp);
of_node_put(opp->np);
}
/* Populate all required OPPs which are part of "required-opps" list */
static int _of_opp_alloc_required_opps(struct opp_table *opp_table,
struct dev_pm_opp *opp)
......@@ -767,7 +773,51 @@ void dev_pm_opp_of_remove_table(struct device *dev)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_remove_table);
static int _read_bw(struct dev_pm_opp *new_opp, struct opp_table *table,
static int _read_rate(struct dev_pm_opp *new_opp, struct opp_table *opp_table,
struct device_node *np)
{
struct property *prop;
int i, count, ret;
u64 *rates;
prop = of_find_property(np, "opp-hz", NULL);
if (!prop)
return -ENODEV;
count = prop->length / sizeof(u64);
if (opp_table->clk_count != count) {
pr_err("%s: Count mismatch between opp-hz and clk_count (%d %d)\n",
__func__, count, opp_table->clk_count);
return -EINVAL;
}
rates = kmalloc_array(count, sizeof(*rates), GFP_KERNEL);
if (!rates)
return -ENOMEM;
ret = of_property_read_u64_array(np, "opp-hz", rates, count);
if (ret) {
pr_err("%s: Error parsing opp-hz: %d\n", __func__, ret);
} else {
/*
* Rate is defined as an unsigned long in clk API, and so
* casting explicitly to its type. Must be fixed once rate is 64
* bit guaranteed in clk API.
*/
for (i = 0; i < count; i++) {
new_opp->rates[i] = (unsigned long)rates[i];
/* This will happen for frequencies > 4.29 GHz */
WARN_ON(new_opp->rates[i] != rates[i]);
}
}
kfree(rates);
return ret;
}
static int _read_bw(struct dev_pm_opp *new_opp, struct opp_table *opp_table,
struct device_node *np, bool peak)
{
const char *name = peak ? "opp-peak-kBps" : "opp-avg-kBps";
......@@ -780,9 +830,9 @@ static int _read_bw(struct dev_pm_opp *new_opp, struct opp_table *table,
return -ENODEV;
count = prop->length / sizeof(u32);
if (table->path_count != count) {
if (opp_table->path_count != count) {
pr_err("%s: Mismatch between %s and paths (%d %d)\n",
__func__, name, count, table->path_count);
__func__, name, count, opp_table->path_count);
return -EINVAL;
}
......@@ -808,34 +858,27 @@ static int _read_bw(struct dev_pm_opp *new_opp, struct opp_table *table,
return ret;
}
static int _read_opp_key(struct dev_pm_opp *new_opp, struct opp_table *table,
struct device_node *np, bool *rate_not_available)
static int _read_opp_key(struct dev_pm_opp *new_opp,
struct opp_table *opp_table, struct device_node *np)
{
bool found = false;
u64 rate;
int ret;
ret = of_property_read_u64(np, "opp-hz", &rate);
if (!ret) {
/*
* Rate is defined as an unsigned long in clk API, and so
* casting explicitly to its type. Must be fixed once rate is 64
* bit guaranteed in clk API.
*/
new_opp->rate = (unsigned long)rate;
ret = _read_rate(new_opp, opp_table, np);
if (!ret)
found = true;
}
*rate_not_available = !!ret;
else if (ret != -ENODEV)
return ret;
/*
* Bandwidth consists of peak and average (optional) values:
* opp-peak-kBps = <path1_value path2_value>;
* opp-avg-kBps = <path1_value path2_value>;
*/
ret = _read_bw(new_opp, table, np, true);
ret = _read_bw(new_opp, opp_table, np, true);
if (!ret) {
found = true;
ret = _read_bw(new_opp, table, np, false);
ret = _read_bw(new_opp, opp_table, np, false);
}
/* The properties were found but we failed to parse them */
......@@ -881,13 +924,12 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
struct dev_pm_opp *new_opp;
u32 val;
int ret;
bool rate_not_available = false;
new_opp = _opp_allocate(opp_table);
if (!new_opp)
return ERR_PTR(-ENOMEM);
ret = _read_opp_key(new_opp, opp_table, np, &rate_not_available);
ret = _read_opp_key(new_opp, opp_table, np);
if (ret < 0) {
dev_err(dev, "%s: opp key field not found\n", __func__);
goto free_opp;
......@@ -895,14 +937,14 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
/* Check if the OPP supports hardware's hierarchy of versions or not */
if (!_opp_is_supported(dev, opp_table, np)) {
dev_dbg(dev, "OPP not supported by hardware: %lu\n",
new_opp->rate);
dev_dbg(dev, "OPP not supported by hardware: %s\n",
of_node_full_name(np));
goto free_opp;
}
new_opp->turbo = of_property_read_bool(np, "turbo-mode");
new_opp->np = np;
new_opp->np = of_node_get(np);
new_opp->dynamic = false;
new_opp->available = true;
......@@ -920,7 +962,7 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
if (opp_table->is_genpd)
new_opp->pstate = pm_genpd_opp_to_performance_state(dev, new_opp);
ret = _opp_add(dev, new_opp, opp_table, rate_not_available);
ret = _opp_add(dev, new_opp, opp_table);
if (ret) {
/* Don't return error for duplicate OPPs */
if (ret == -EBUSY)
......@@ -931,8 +973,8 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
/* OPP to select on device suspend */
if (of_property_read_bool(np, "opp-suspend")) {
if (opp_table->suspend_opp) {
/* Pick the OPP with higher rate as suspend OPP */
if (new_opp->rate > opp_table->suspend_opp->rate) {
/* Pick the OPP with higher rate/bw/level as suspend OPP */
if (_opp_compare_key(opp_table, new_opp, opp_table->suspend_opp) == 1) {
opp_table->suspend_opp->suspend = false;
new_opp->suspend = true;
opp_table->suspend_opp = new_opp;
......@@ -947,7 +989,7 @@ static struct dev_pm_opp *_opp_add_static_v2(struct opp_table *opp_table,
opp_table->clock_latency_ns_max = new_opp->clock_latency_ns;
pr_debug("%s: turbo:%d rate:%lu uv:%lu uvmin:%lu uvmax:%lu latency:%lu level:%u\n",
__func__, new_opp->turbo, new_opp->rate,
__func__, new_opp->turbo, new_opp->rates[0],
new_opp->supplies[0].u_volt, new_opp->supplies[0].u_volt_min,
new_opp->supplies[0].u_volt_max, new_opp->clock_latency_ns,
new_opp->level);
......@@ -1084,7 +1126,7 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
return ret;
}
static int _of_add_table_indexed(struct device *dev, int index, bool getclk)
static int _of_add_table_indexed(struct device *dev, int index)
{
struct opp_table *opp_table;
int ret, count;
......@@ -1100,7 +1142,7 @@ static int _of_add_table_indexed(struct device *dev, int index, bool getclk)
index = 0;
}
opp_table = _add_opp_table_indexed(dev, index, getclk);
opp_table = _add_opp_table_indexed(dev, index, true);
if (IS_ERR(opp_table))
return PTR_ERR(opp_table);
......@@ -1124,11 +1166,11 @@ static void devm_pm_opp_of_table_release(void *data)
dev_pm_opp_of_remove_table(data);
}
static int _devm_of_add_table_indexed(struct device *dev, int index, bool getclk)
static int _devm_of_add_table_indexed(struct device *dev, int index)
{
int ret;
ret = _of_add_table_indexed(dev, index, getclk);
ret = _of_add_table_indexed(dev, index);
if (ret)
return ret;
......@@ -1156,7 +1198,7 @@ static int _devm_of_add_table_indexed(struct device *dev, int index, bool getclk
*/
int devm_pm_opp_of_add_table(struct device *dev)
{
return _devm_of_add_table_indexed(dev, 0, true);
return _devm_of_add_table_indexed(dev, 0);
}
EXPORT_SYMBOL_GPL(devm_pm_opp_of_add_table);
......@@ -1179,7 +1221,7 @@ EXPORT_SYMBOL_GPL(devm_pm_opp_of_add_table);
*/
int dev_pm_opp_of_add_table(struct device *dev)
{
return _of_add_table_indexed(dev, 0, true);
return _of_add_table_indexed(dev, 0);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
......@@ -1195,7 +1237,7 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table);
*/
int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
{
return _of_add_table_indexed(dev, index, true);
return _of_add_table_indexed(dev, index);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed);
......@@ -1208,42 +1250,10 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_indexed);
*/
int devm_pm_opp_of_add_table_indexed(struct device *dev, int index)
{
return _devm_of_add_table_indexed(dev, index, true);
return _devm_of_add_table_indexed(dev, index);
}
EXPORT_SYMBOL_GPL(devm_pm_opp_of_add_table_indexed);
/**
* dev_pm_opp_of_add_table_noclk() - Initialize indexed opp table from device
* tree without getting clk for device.
* @dev: device pointer used to lookup OPP table.
* @index: Index number.
*
* Register the initial OPP table with the OPP library for given device only
* using the "operating-points-v2" property. Do not try to get the clk for the
* device.
*
* Return: Refer to dev_pm_opp_of_add_table() for return values.
*/
int dev_pm_opp_of_add_table_noclk(struct device *dev, int index)
{
return _of_add_table_indexed(dev, index, false);
}
EXPORT_SYMBOL_GPL(dev_pm_opp_of_add_table_noclk);
/**
* devm_pm_opp_of_add_table_noclk() - Initialize indexed opp table from device
* tree without getting clk for device.
* @dev: device pointer used to lookup OPP table.
* @index: Index number.
*
* This is a resource-managed variant of dev_pm_opp_of_add_table_noclk().
*/
int devm_pm_opp_of_add_table_noclk(struct device *dev, int index)
{
return _devm_of_add_table_indexed(dev, index, false);
}
EXPORT_SYMBOL_GPL(devm_pm_opp_of_add_table_noclk);
/* CPU device specific helpers */
/**
......
drivers/opp/opp.h
View file @ c4f5a40b
......@@ -28,6 +28,27 @@ extern struct mutex opp_table_lock;
extern struct list_head opp_tables, lazy_opp_tables;
/* OPP Config flags */
#define OPP_CONFIG_CLK BIT(0)
#define OPP_CONFIG_REGULATOR BIT(1)
#define OPP_CONFIG_REGULATOR_HELPER BIT(2)
#define OPP_CONFIG_PROP_NAME BIT(3)
#define OPP_CONFIG_SUPPORTED_HW BIT(4)
#define OPP_CONFIG_GENPD BIT(5)
/**
* struct opp_config_data - data for set config operations
* @opp_table: OPP table
* @flags: OPP config flags
*
* This structure stores the OPP config information for each OPP table
* configuration by the callers.
*/
struct opp_config_data {
struct opp_table *opp_table;
unsigned int flags;
};
/*
* Internal data structure organization with the OPP layer library is as
* follows:
......@@ -58,7 +79,7 @@ extern struct list_head opp_tables, lazy_opp_tables;
* @suspend: true if suspend OPP
* @removed: flag indicating that OPP's reference is dropped by OPP core.
* @pstate: Device's power domain's performance state.
* @rate: Frequency in hertz
* @rates: Frequencies in hertz
* @level: Performance level
* @supplies: Power supplies voltage/current values
* @bandwidth: Interconnect bandwidth values
......@@ -81,7 +102,7 @@ struct dev_pm_opp {
bool suspend;
bool removed;
unsigned int pstate;
unsigned long rate;
unsigned long *rates;
unsigned int level;
struct dev_pm_opp_supply *supplies;
......@@ -138,7 +159,7 @@ enum opp_table_access {
* @clock_latency_ns_max: Max clock latency in nanoseconds.
* @parsed_static_opps: Count of devices for which OPPs are initialized from DT.
* @shared_opp: OPP is shared between multiple devices.
* @current_rate: Currently configured frequency.
* @rate_clk_single: Currently configured frequency for single clk.
* @current_opp: Currently configured OPP for the table.
* @suspend_opp: Pointer to OPP to be used during device suspend.
* @genpd_virt_dev_lock: Mutex protecting the genpd virtual device pointers.
......@@ -149,7 +170,11 @@ enum opp_table_access {
* @supported_hw: Array of version number to support.
* @supported_hw_count: Number of elements in supported_hw array.
* @prop_name: A name to postfix to many DT properties, while parsing them.
* @clk: Device's clock handle
* @config_clks: Platform specific config_clks() callback.
* @clks: Device's clock handles, for multiple clocks.
* @clk: Device's clock handle, for single clock.
* @clk_count: Number of clocks.
* @config_regulators: Platform specific config_regulators() callback.
* @regulators: Supply regulators
* @regulator_count: Number of power supply regulators. Its value can be -1
* (uninitialized), 0 (no opp-microvolt property) or > 0 (has opp-microvolt
......@@ -159,9 +184,6 @@ enum opp_table_access {
* @enabled: Set to true if the device's resources are enabled/configured.
* @genpd_performance_state: Device's power domain support performance state.
* @is_genpd: Marks if the OPP table belongs to a genpd.
* @set_opp: Platform specific set_opp callback
* @sod_supplies: Set opp data supplies
* @set_opp_data: Data to be passed to set_opp callback
* @dentry: debugfs dentry pointer of the real device directory (not links).
* @dentry_name: Name of the real dentry.
*
......@@ -188,7 +210,7 @@ struct opp_table {
unsigned int parsed_static_opps;
enum opp_table_access shared_opp;
unsigned long current_rate;
unsigned long rate_clk_single;
struct dev_pm_opp *current_opp;
struct dev_pm_opp *suspend_opp;
......@@ -200,7 +222,11 @@ struct opp_table {
unsigned int *supported_hw;
unsigned int supported_hw_count;
const char *prop_name;
config_clks_t config_clks;
struct clk **clks;
struct clk *clk;
int clk_count;
config_regulators_t config_regulators;
struct regulator **regulators;
int regulator_count;
struct icc_path **paths;
......@@ -209,10 +235,6 @@ struct opp_table {
bool genpd_performance_state;
bool is_genpd;
int (*set_opp)(struct dev_pm_set_opp_data *data);
struct dev_pm_opp_supply *sod_supplies;
struct dev_pm_set_opp_data *set_opp_data;
#ifdef CONFIG_DEBUG_FS
struct dentry *dentry;
char dentry_name[NAME_MAX];
......@@ -228,8 +250,8 @@ struct opp_table *_find_opp_table(struct device *dev);
struct opp_device *_add_opp_dev(const struct device *dev, struct opp_table *opp_table);
struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table);
void _opp_free(struct dev_pm_opp *opp);
int _opp_compare_key(struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table, bool rate_not_available);
int _opp_compare_key(struct opp_table *opp_table, struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table);
int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic);
void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu);
struct opp_table *_add_opp_table_indexed(struct device *dev, int index, bool getclk);
......@@ -245,14 +267,12 @@ static inline bool lazy_linking_pending(struct opp_table *opp_table)
void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index);
void _of_clear_opp_table(struct opp_table *opp_table);
struct opp_table *_managed_opp(struct device *dev, int index);
void _of_opp_free_required_opps(struct opp_table *opp_table,
struct dev_pm_opp *opp);
void _of_clear_opp(struct opp_table *opp_table, struct dev_pm_opp *opp);
#else
static inline void _of_init_opp_table(struct opp_table *opp_table, struct device *dev, int index) {}
static inline void _of_clear_opp_table(struct opp_table *opp_table) {}
static inline struct opp_table *_managed_opp(struct device *dev, int index) { return NULL; }
static inline void _of_opp_free_required_opps(struct opp_table *opp_table,
struct dev_pm_opp *opp) {}
static inline void _of_clear_opp(struct opp_table *opp_table, struct dev_pm_opp *opp) {}
#endif
#ifdef CONFIG_DEBUG_FS
......
drivers/opp/ti-opp-supply.c
View file @ c4f5a40b
......@@ -36,11 +36,15 @@ struct ti_opp_supply_optimum_voltage_table {
* @vdd_table: Optimized voltage mapping table
* @num_vdd_table: number of entries in vdd_table
* @vdd_absolute_max_voltage_uv: absolute maximum voltage in UV for the supply
* @old_supplies: Placeholder for supplies information for old OPP.
* @new_supplies: Placeholder for supplies information for new OPP.
*/
struct ti_opp_supply_data {
struct ti_opp_supply_optimum_voltage_table *vdd_table;
u32 num_vdd_table;
u32 vdd_absolute_max_voltage_uv;
struct dev_pm_opp_supply old_supplies[2];
struct dev_pm_opp_supply new_supplies[2];
};
static struct ti_opp_supply_data opp_data;
......@@ -266,27 +270,32 @@ static int _opp_set_voltage(struct device *dev,
return 0;
}
/**
* ti_opp_supply_set_opp() - do the opp supply transition
* @data: information on regulators and new and old opps provided by
* opp core to use in transition
*
* Return: If successful, 0, else appropriate error value.
*/
static int ti_opp_supply_set_opp(struct dev_pm_set_opp_data *data)
/* Do the opp supply transition */
static int ti_opp_config_regulators(struct device *dev,
struct dev_pm_opp *old_opp, struct dev_pm_opp *new_opp,
struct regulator **regulators, unsigned int count)
{
struct dev_pm_opp_supply *old_supply_vdd = &data->old_opp.supplies[0];
struct dev_pm_opp_supply *old_supply_vbb = &data->old_opp.supplies[1];
struct dev_pm_opp_supply *new_supply_vdd = &data->new_opp.supplies[0];
struct dev_pm_opp_supply *new_supply_vbb = &data->new_opp.supplies[1];
struct device *dev = data->dev;
unsigned long old_freq = data->old_opp.rate, freq = data->new_opp.rate;
struct clk *clk = data->clk;
struct regulator *vdd_reg = data->regulators[0];
struct regulator *vbb_reg = data->regulators[1];
struct dev_pm_opp_supply *old_supply_vdd = &opp_data.old_supplies[0];
struct dev_pm_opp_supply *old_supply_vbb = &opp_data.old_supplies[1];
struct dev_pm_opp_supply *new_supply_vdd = &opp_data.new_supplies[0];
struct dev_pm_opp_supply *new_supply_vbb = &opp_data.new_supplies[1];
struct regulator *vdd_reg = regulators[0];
struct regulator *vbb_reg = regulators[1];
unsigned long old_freq, freq;
int vdd_uv;
int ret;
/* We must have two regulators here */
WARN_ON(count != 2);
/* Fetch supplies and freq information from OPP core */
ret = dev_pm_opp_get_supplies(new_opp, opp_data.new_supplies);
WARN_ON(ret);
old_freq = dev_pm_opp_get_freq(old_opp);
freq = dev_pm_opp_get_freq(new_opp);
WARN_ON(!old_freq || !freq);
vdd_uv = _get_optimal_vdd_voltage(dev, &opp_data,
new_supply_vdd->u_volt);
......@@ -303,39 +312,24 @@ static int ti_opp_supply_set_opp(struct dev_pm_set_opp_data *data)
ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
if (ret)
goto restore_voltage;
}
/* Change frequency */
dev_dbg(dev, "%s: switching OPP: %lu Hz --> %lu Hz\n",
__func__, old_freq, freq);
ret = clk_set_rate(clk, freq);
if (ret) {
dev_err(dev, "%s: failed to set clock rate: %d\n", __func__,
ret);
goto restore_voltage;
}
/* Scaling down? Scale voltage after frequency */
if (freq < old_freq) {
} else {
ret = _opp_set_voltage(dev, new_supply_vbb, 0, vbb_reg, "vbb");
if (ret)
goto restore_freq;
goto restore_voltage;
ret = _opp_set_voltage(dev, new_supply_vdd, vdd_uv, vdd_reg,
"vdd");
if (ret)
goto restore_freq;
goto restore_voltage;
}
return 0;
restore_freq:
ret = clk_set_rate(clk, old_freq);
if (ret)
dev_err(dev, "%s: failed to restore old-freq (%lu Hz)\n",
__func__, old_freq);
restore_voltage:
/* Fetch old supplies information only if required */
ret = dev_pm_opp_get_supplies(old_opp, opp_data.old_supplies);
WARN_ON(ret);
/* This shouldn't harm even if the voltages weren't updated earlier */
if (old_supply_vdd->u_volt) {
ret = _opp_set_voltage(dev, old_supply_vbb, 0, vbb_reg, "vbb");
......@@ -405,9 +399,8 @@ static int ti_opp_supply_probe(struct platform_device *pdev)
return ret;
}
ret = PTR_ERR_OR_ZERO(dev_pm_opp_register_set_opp_helper(cpu_dev,
ti_opp_supply_set_opp));
if (ret)
ret = dev_pm_opp_set_config_regulators(cpu_dev, ti_opp_config_regulators);
if (ret < 0)
_free_optimized_voltages(dev, &opp_data);
return ret;
......
drivers/soc/tegra/common.c
View file @ c4f5a40b
......@@ -107,29 +107,46 @@ int devm_tegra_core_dev_init_opp_table(struct device *dev,
{
u32 hw_version;
int err;
err = devm_pm_opp_set_clkname(dev, NULL);
if (err) {
dev_err(dev, "failed to set OPP clk: %d\n", err);
return err;
}
/* Tegra114+ doesn't support OPP yet */
if (!of_machine_is_compatible("nvidia,tegra20") &&
!of_machine_is_compatible("nvidia,tegra30"))
return -ENODEV;
if (of_machine_is_compatible("nvidia,tegra20"))
/*
* The clk's connection id to set is NULL and this is a NULL terminated
* array, hence two NULL entries.
*/
const char *clk_names[] = { NULL, NULL };
struct dev_pm_opp_config config = {
/*
* For some devices we don't have any OPP table in the DT, and
* in order to use the same code path for all the devices, we
* create a dummy OPP table for them via this. The dummy OPP
* table is only capable of doing clk_set_rate() on invocation
* of dev_pm_opp_set_rate() and doesn't provide any other
* functionality.
*/
.clk_names = clk_names,
};
if (of_machine_is_compatible("nvidia,tegra20")) {
hw_version = BIT(tegra_sku_info.soc_process_id);
else
config.supported_hw = &hw_version;
config.supported_hw_count = 1;
} else if (of_machine_is_compatible("nvidia,tegra30")) {
hw_version = BIT(tegra_sku_info.soc_speedo_id);
config.supported_hw = &hw_version;
config.supported_hw_count = 1;
}
err = devm_pm_opp_set_supported_hw(dev, &hw_version, 1);
err = devm_pm_opp_set_config(dev, &config);
if (err) {
dev_err(dev, "failed to set OPP supported HW: %d\n", err);
dev_err(dev, "failed to set OPP config: %d\n", err);
return err;
}
/*
* Tegra114+ doesn't support OPP yet, return early for non tegra20/30
* case.
*/
if (!config.supported_hw)
return -ENODEV;
/*
* Older device-trees have an empty OPP table, we will get
* -ENODEV from devm_pm_opp_of_add_table() in this case.
......
drivers/soc/tegra/pmc.c
View file @ c4f5a40b
......@@ -1384,7 +1384,7 @@ tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd,
static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
{
struct generic_pm_domain *genpd;
const char *rname = "core";
const char *rname[] = { "core", NULL};
int err;
genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL);
......@@ -1395,7 +1395,7 @@ static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1);
err = devm_pm_opp_set_regulators(pmc->dev, rname);
if (err)
return dev_err_probe(pmc->dev, err,
"failed to set core OPP regulator\n");
......
include/linux/pm_opp.h
View file @ c4f5a40b
......@@ -57,37 +57,39 @@ struct dev_pm_opp_icc_bw {
u32 peak;
};
/**
* struct dev_pm_opp_info - OPP freq/voltage/current values
* @rate: Target clk rate in hz
* @supplies: Array of voltage/current values for all power supplies
*
* This structure stores the freq/voltage/current values for a single OPP.
*/
struct dev_pm_opp_info {
unsigned long rate;
struct dev_pm_opp_supply *supplies;
};
typedef int (*config_regulators_t)(struct device *dev,
struct dev_pm_opp *old_opp, struct dev_pm_opp *new_opp,
struct regulator **regulators, unsigned int count);
typedef int (*config_clks_t)(struct device *dev, struct opp_table *opp_table,
struct dev_pm_opp *opp, void *data, bool scaling_down);
/**
* struct dev_pm_set_opp_data - Set OPP data
* @old_opp: Old OPP info
* @new_opp: New OPP info
* @regulators: Array of regulator pointers
* @regulator_count: Number of regulators
* @clk: Pointer to clk
* @dev: Pointer to the struct device
* struct dev_pm_opp_config - Device OPP configuration values
* @clk_names: Clk names, NULL terminated array.
* @config_clks: Custom set clk helper.
* @prop_name: Name to postfix to properties.
* @config_regulators: Custom set regulator helper.
* @supported_hw: Array of hierarchy of versions to match.
* @supported_hw_count: Number of elements in the array.
* @regulator_names: Array of pointers to the names of the regulator, NULL terminated.
* @genpd_names: Null terminated array of pointers containing names of genpd to
* attach.
* @virt_devs: Pointer to return the array of virtual devices.
*
* This structure contains all information required for setting an OPP.
* This structure contains platform specific OPP configurations for the device.
*/
struct dev_pm_set_opp_data {
struct dev_pm_opp_info old_opp;
struct dev_pm_opp_info new_opp;
struct regulator **regulators;
unsigned int regulator_count;
struct clk *clk;
struct device *dev;
struct dev_pm_opp_config {
/* NULL terminated */
const char * const *clk_names;
config_clks_t config_clks;
const char *prop_name;
config_regulators_t config_regulators;
const unsigned int *supported_hw;
unsigned int supported_hw_count;
const char * const *regulator_names;
const char * const *genpd_names;
struct device ***virt_devs;
};
#if defined(CONFIG_PM_OPP)
......@@ -97,6 +99,8 @@ void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies);
unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp);
unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
......@@ -119,8 +123,6 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
bool available);
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
unsigned long *freq);
struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt);
struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev,
unsigned int level);
......@@ -154,23 +156,13 @@ int dev_pm_opp_disable(struct device *dev, unsigned long freq);
int dev_pm_opp_register_notifier(struct device *dev, struct notifier_block *nb);
int dev_pm_opp_unregister_notifier(struct device *dev, struct notifier_block *nb);
struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
void dev_pm_opp_put_supported_hw(struct opp_table *opp_table);
int devm_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, unsigned int count);
struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name);
void dev_pm_opp_put_prop_name(struct opp_table *opp_table);
struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
void dev_pm_opp_put_regulators(struct opp_table *opp_table);
int devm_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name);
void dev_pm_opp_put_clkname(struct opp_table *opp_table);
int devm_pm_opp_set_clkname(struct device *dev, const char *name);
struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
int devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs);
void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
int devm_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs);
int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config);
void dev_pm_opp_clear_config(int token);
int dev_pm_opp_config_clks_simple(struct device *dev,
struct opp_table *opp_table, struct dev_pm_opp *opp, void *data,
bool scaling_down);
struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, struct opp_table *dst_table, struct dev_pm_opp *src_opp);
int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
......@@ -198,6 +190,11 @@ static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
return 0;
}
static inline int dev_pm_opp_get_supplies(struct dev_pm_opp *opp, struct dev_pm_opp_supply *supplies)
{
return -EOPNOTSUPP;
}
static inline unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp)
{
return 0;
......@@ -274,12 +271,6 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
return ERR_PTR(-EOPNOTSUPP);
}
static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev,
unsigned long u_volt)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
unsigned long *freq)
{
......@@ -342,79 +333,21 @@ static inline int dev_pm_opp_unregister_notifier(struct device *dev, struct noti
return -EOPNOTSUPP;
}
static inline struct opp_table *dev_pm_opp_set_supported_hw(struct device *dev,
const u32 *versions,
unsigned int count)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_put_supported_hw(struct opp_table *opp_table) {}
static inline int devm_pm_opp_set_supported_hw(struct device *dev,
const u32 *versions,
unsigned int count)
{
return -EOPNOTSUPP;
}
static inline struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev,
int (*set_opp)(struct dev_pm_set_opp_data *data))
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table) {}
static inline int devm_pm_opp_register_set_opp_helper(struct device *dev,
int (*set_opp)(struct dev_pm_set_opp_data *data))
{
return -EOPNOTSUPP;
}
static inline struct opp_table *dev_pm_opp_set_prop_name(struct device *dev, const char *name)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_put_prop_name(struct opp_table *opp_table) {}
static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
static inline int devm_pm_opp_set_regulators(struct device *dev,
const char * const names[],
unsigned int count)
static inline int dev_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
return -EOPNOTSUPP;
}
static inline struct opp_table *dev_pm_opp_set_clkname(struct device *dev, const char *name)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_put_clkname(struct opp_table *opp_table) {}
static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name)
static inline int devm_pm_opp_set_config(struct device *dev, struct dev_pm_opp_config *config)
{
return -EOPNOTSUPP;
}
static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs)
{
return ERR_PTR(-EOPNOTSUPP);
}
static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}
static inline void dev_pm_opp_clear_config(int token) {}
static inline int devm_pm_opp_attach_genpd(struct device *dev,
const char * const *names,
struct device ***virt_devs)
static inline int dev_pm_opp_config_clks_simple(struct device *dev,
struct opp_table *opp_table, struct dev_pm_opp *opp, void *data,
bool scaling_down)
{
return -EOPNOTSUPP;
}
......@@ -469,8 +402,6 @@ static inline int dev_pm_opp_sync_regulators(struct device *dev)
int dev_pm_opp_of_add_table(struct device *dev);
int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
int devm_pm_opp_of_add_table_indexed(struct device *dev, int index);
int dev_pm_opp_of_add_table_noclk(struct device *dev, int index);
int devm_pm_opp_of_add_table_noclk(struct device *dev, int index);
void dev_pm_opp_of_remove_table(struct device *dev);
int devm_pm_opp_of_add_table(struct device *dev);
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
......@@ -501,16 +432,6 @@ static inline int devm_pm_opp_of_add_table_indexed(struct device *dev, int index
return -EOPNOTSUPP;
}
static inline int dev_pm_opp_of_add_table_noclk(struct device *dev, int index)
{
return -EOPNOTSUPP;
}
static inline int devm_pm_opp_of_add_table_noclk(struct device *dev, int index)
{
return -EOPNOTSUPP;
}
static inline void dev_pm_opp_of_remove_table(struct device *dev)
{
}
......@@ -565,4 +486,149 @@ static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_ta
}
#endif
/* OPP Configuration helpers */
/* Regulators helpers */
static inline int dev_pm_opp_set_regulators(struct device *dev,
const char * const names[])
{
struct dev_pm_opp_config config = {
.regulator_names = names,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_put_regulators(int token)
{
dev_pm_opp_clear_config(token);
}
static inline int devm_pm_opp_set_regulators(struct device *dev,
const char * const names[])
{
struct dev_pm_opp_config config = {
.regulator_names = names,
};
return devm_pm_opp_set_config(dev, &config);
}
/* Supported-hw helpers */
static inline int dev_pm_opp_set_supported_hw(struct device *dev,
const u32 *versions,
unsigned int count)
{
struct dev_pm_opp_config config = {
.supported_hw = versions,
.supported_hw_count = count,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_put_supported_hw(int token)
{
dev_pm_opp_clear_config(token);
}
static inline int devm_pm_opp_set_supported_hw(struct device *dev,
const u32 *versions,
unsigned int count)
{
struct dev_pm_opp_config config = {
.supported_hw = versions,
.supported_hw_count = count,
};
return devm_pm_opp_set_config(dev, &config);
}
/* clkname helpers */
static inline int dev_pm_opp_set_clkname(struct device *dev, const char *name)
{
const char *names[] = { name, NULL };
struct dev_pm_opp_config config = {
.clk_names = names,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_put_clkname(int token)
{
dev_pm_opp_clear_config(token);
}
static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name)
{
const char *names[] = { name, NULL };
struct dev_pm_opp_config config = {
.clk_names = names,
};
return devm_pm_opp_set_config(dev, &config);
}
/* config-regulators helpers */
static inline int dev_pm_opp_set_config_regulators(struct device *dev,
config_regulators_t helper)
{
struct dev_pm_opp_config config = {
.config_regulators = helper,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_put_config_regulators(int token)
{
dev_pm_opp_clear_config(token);
}
/* genpd helpers */
static inline int dev_pm_opp_attach_genpd(struct device *dev,
const char * const *names,
struct device ***virt_devs)
{
struct dev_pm_opp_config config = {
.genpd_names = names,
.virt_devs = virt_devs,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_detach_genpd(int token)
{
dev_pm_opp_clear_config(token);
}
static inline int devm_pm_opp_attach_genpd(struct device *dev,
const char * const *names,
struct device ***virt_devs)
{
struct dev_pm_opp_config config = {
.genpd_names = names,
.virt_devs = virt_devs,
};
return devm_pm_opp_set_config(dev, &config);
}
/* prop-name helpers */
static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
{
struct dev_pm_opp_config config = {
.prop_name = name,
};
return dev_pm_opp_set_config(dev, &config);
}
static inline void dev_pm_opp_put_prop_name(int token)
{
dev_pm_opp_clear_config(token);
}
#endif /* __LINUX_OPP_H__ */
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