Messages in this thread Patch in this message | | | From | Naresh Solanki <> | Subject | [PATCH] regulator: userspace-consumer: Retrieve supplies from DT | Date | Tue, 19 Sep 2023 08:17:55 +0200 |
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From: Naresh Solanki <Naresh.Solanki@9elements.com>
Instead of hardcoding a single supply, retrieve supplies from DT.
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com> --- drivers/regulator/userspace-consumer.c | 43 ++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c index 97f075ed68c9..a3d3e1e6ca74 100644 --- a/drivers/regulator/userspace-consumer.c +++ b/drivers/regulator/userspace-consumer.c @@ -115,11 +115,32 @@ static const struct attribute_group attr_group = { .is_visible = attr_visible, }; +#define SUPPLY_SUFFIX "-supply" +#define SUPPLY_SUFFIX_LEN 7 + +static int get_num_supplies(struct platform_device *pdev) +{ + struct property *prop; + int num_supplies = 0; + + for_each_property_of_node(pdev->dev.of_node, prop) { + const char *prop_name = prop->name; + int len = strlen(prop_name); + + if (len > SUPPLY_SUFFIX_LEN && + strcmp(prop_name + len - SUPPLY_SUFFIX_LEN, SUPPLY_SUFFIX) == 0) { + num_supplies++; + } + } + return num_supplies; +} + static int regulator_userspace_consumer_probe(struct platform_device *pdev) { struct regulator_userspace_consumer_data tmpdata; struct regulator_userspace_consumer_data *pdata; struct userspace_consumer_data *drvdata; + struct property *prop; int ret; pdata = dev_get_platdata(&pdev->dev); @@ -131,11 +152,27 @@ static int regulator_userspace_consumer_probe(struct platform_device *pdev) memset(pdata, 0, sizeof(*pdata)); pdata->no_autoswitch = true; - pdata->num_supplies = 1; - pdata->supplies = devm_kzalloc(&pdev->dev, sizeof(*pdata->supplies), GFP_KERNEL); + pdata->num_supplies = get_num_supplies(pdev); + + pdata->supplies = devm_kzalloc(&pdev->dev, pdata->num_supplies * + sizeof(*pdata->supplies), GFP_KERNEL); if (!pdata->supplies) return -ENOMEM; - pdata->supplies[0].supply = "vout"; + + for_each_property_of_node(pdev->dev.of_node, prop) { + const char *prop_name = prop->name; + int len = strlen(prop_name); + + if (len > SUPPLY_SUFFIX_LEN && + strcmp(prop_name + len - SUPPLY_SUFFIX_LEN, SUPPLY_SUFFIX) == 0) { + char *supply_name = devm_kzalloc(&pdev->dev, + len - SUPPLY_SUFFIX_LEN + 1, + GFP_KERNEL); + strscpy(supply_name, prop_name, len - SUPPLY_SUFFIX_LEN); + supply_name[len - SUPPLY_SUFFIX_LEN] = '\0'; + pdata->supplies[0].supply = supply_name; + } + } } if (pdata->num_supplies < 1) { base-commit: 451e85e29c9d6f20639d4cfcff4b9dea280178cc -- 2.41.0
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