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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id x8-20020a170906298800b009ad778a68c5sm7368534eje.60.2023.09.18.23.18.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Sep 2023 23:18:03 -0700 (PDT) From: Naresh Solanki To: broonie@kernel.org, zev@bewilderbeest.net, Liam Girdwood Cc: Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH] regulator: userspace-consumer: Retrieve supplies from DT Date: Tue, 19 Sep 2023 08:17:55 +0200 Message-ID: <20230919061755.3412016-1-naresh.solanki@9elements.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Mon, 18 Sep 2023 23:18:23 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777461735209945223 X-GMAIL-MSGID: 1777461735209945223 From: Naresh Solanki Instead of hardcoding a single supply, retrieve supplies from DT. Signed-off-by: Naresh Solanki --- drivers/regulator/userspace-consumer.c | 43 ++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 3 deletions(-) base-commit: 451e85e29c9d6f20639d4cfcff4b9dea280178cc 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) {