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[90.63.244.31]) by smtp.googlemail.com with ESMTPSA id o23-20020a05600c511700b0039456c00ba7sm6859281wms.1.2022.05.18.13.09.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 May 2022 13:09:48 -0700 (PDT) From: Corentin Labbe To: andrew@lunn.ch, broonie@kernel.org, calvin.johnson@oss.nxp.com, davem@davemloft.net, edumazet@google.com, hkallweit1@gmail.com, jernej.skrabec@gmail.com, krzysztof.kozlowski+dt@linaro.org, kuba@kernel.org, lgirdwood@gmail.com, linux@armlinux.org.uk, pabeni@redhat.com, robh+dt@kernel.org, samuel@sholland.org, wens@csie.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, netdev@vger.kernel.org, Corentin Labbe Subject: [PATCH v2 2/5] regulator: Add regulator_bulk_get_all Date: Wed, 18 May 2022 20:09:36 +0000 Message-Id: <20220518200939.689308-3-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220518200939.689308-1-clabbe@baylibre.com> References: <20220518200939.689308-1-clabbe@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org It work exactly like regulator_bulk_get() but instead of working on a provided list of names, it get names from a regulators list. Signed-off-by: Corentin Labbe --- drivers/regulator/core.c | 49 ++++++++++++++++++++++++++++++ include/linux/regulator/consumer.h | 2 ++ 2 files changed, 51 insertions(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 09578c3595de..719ce9a0db1b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -4849,6 +4849,55 @@ static void regulator_bulk_enable_async(void *data, async_cookie_t cookie) bulk->ret = regulator_enable(bulk->consumer); } +/** + * regulator_bulk_get_all - get multiple regulator consumers + * + * @dev: Device to supply + * @consumers: Configuration of consumers; clients are stored here. + * + * @return number of regulators on success, an errno on failure. + * + * This helper function allows drivers to get several regulator + * consumers in one operation. If any of the regulators cannot be + * acquired then any regulators that were allocated will be freed + * before returning to the caller. + */ +int regulator_bulk_get_all(struct device *dev, struct device_node *np, + struct regulator_bulk_data **consumers) +{ + int num_consumers; + int i, ret; + struct regulator *tmp; + const char *p; + + num_consumers = of_property_count_elems_of_size(np, "regulators", + sizeof(phandle)); + if (num_consumers <= 0) + return num_consumers; + + ret = of_property_count_strings(np, "regulator-names"); + if (ret != num_consumers) { + dev_err(dev, "regulators and regulator-names does not have the same size\n"); + return -EINVAL; + } + *consumers = kmalloc_array(num_consumers, sizeof(struct regulator_bulk_data), GFP_KERNEL); + if (!*consumers) + return -ENOMEM; + for (i = 0; i < num_consumers; i++) { + ret = of_property_read_string_helper(np, "regulator-names", &p, 1, i); + if (ret <= 0) + goto error; + tmp = regulator_get(dev, p); + (*consumers)[i].consumer = tmp; + } + return num_consumers; +error: + while (--i >= 0) + regulator_put(consumers[i]->consumer); + return ret; +} +EXPORT_SYMBOL_GPL(regulator_bulk_get_all); + /** * regulator_bulk_enable - enable multiple regulator consumers * diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index bbf6590a6dec..b9b1d1cbdd07 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -238,6 +238,8 @@ int regulator_disable_deferred(struct regulator *regulator, int ms); int __must_check regulator_bulk_get(struct device *dev, int num_consumers, struct regulator_bulk_data *consumers); +int __must_check regulator_bulk_get_all(struct device *dev, struct device_node *np, + struct regulator_bulk_data **consumers); int __must_check devm_regulator_bulk_get(struct device *dev, int num_consumers, struct regulator_bulk_data *consumers); int __must_check regulator_bulk_enable(int num_consumers, -- 2.35.1