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[92.233.226.227]) by smtp.gmail.com with ESMTPSA id a5sm3604247wrp.37.2020.09.25.09.49.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2020 09:49:06 -0700 (PDT) From: Srinivas Kandagatla To: broonie@kernel.org Subject: [PATCH v2 1/2] regmap: add support to regmap_field_bulk_alloc/free apis Date: Fri, 25 Sep 2020 17:48:55 +0100 Message-Id: <20200925164856.10315-2-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200925164856.10315-1-srinivas.kandagatla@linaro.org> References: <20200925164856.10315-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, srivasam@codeaurora.org, lgirdwood@gmail.com, gregkh@linuxfoundation.org, rafael@kernel.org, tiwai@suse.com, rohitkr@codeaurora.org, Srinivas Kandagatla , linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Usage of regmap_field_alloc becomes much overhead when number of fields exceed more than 3. QCOM LPASS driver has extensively converted to use regmap_fields. Using new bulk api to allocate fields makes it much more cleaner code to read! Signed-off-by: Srinivas Kandagatla Tested-by: Srinivasa Rao Mandadapu --- drivers/base/regmap/regmap.c | 100 +++++++++++++++++++++++++++++++++++ include/linux/regmap.h | 11 ++++ 2 files changed, 111 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index aec3f26bf711..8d6aedce666d 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1270,6 +1270,106 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev, } EXPORT_SYMBOL_GPL(devm_regmap_field_alloc); + +/** + * regmap_field_bulk_alloc() - Allocate and initialise a bulk register field. + * + * @regmap: regmap bank in which this register field is located. + * @rm_field: regmap register fields within the bank. + * @reg_field: Register fields within the bank. + * @num_fields: Number of register fields. + * + * The return value will be an -ENOMEM on error or zero for success. + * Newly allocated regmap_fields should be freed by calling + * regmap_field_bulk_free() + */ +int regmap_field_bulk_alloc(struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields) +{ + struct regmap_field *rf; + int i; + + rf = kcalloc(num_fields, sizeof(*rf), GFP_KERNEL); + if (!rf) + return -ENOMEM; + + for (i = 0; i < num_fields; i++) { + regmap_field_init(&rf[i], regmap, reg_field[i]); + rm_field[i] = &rf[i]; + } + + return 0; +} +EXPORT_SYMBOL_GPL(regmap_field_bulk_alloc); + +/** + * devm_regmap_field_bulk_alloc() - Allocate and initialise a bulk register + * fields. + * + * @dev: Device that will be interacted with + * @regmap: regmap bank in which this register field is located. + * @rm_field: regmap register fields within the bank. + * @reg_field: Register fields within the bank. + * @num_fields: Number of register fields. + * + * The return value will be an -ENOMEM on error or zero for success. + * Newly allocated regmap_fields will be automatically freed by the + * device management code. + */ +int devm_regmap_field_bulk_alloc(struct device *dev, + struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields) +{ + struct regmap_field *rf; + int i; + + rf = devm_kcalloc(dev, num_fields, sizeof(*rf), GFP_KERNEL); + if (!rf) + return -ENOMEM; + + for (i = 0; i < num_fields; i++) { + regmap_field_init(&rf[i], regmap, reg_field[i]); + rm_field[i] = &rf[i]; + } + + return 0; +} +EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_alloc); + +/** + * regmap_field_bulk_free() - Free register field allocated using + * regmap_field_bulk_alloc. + * + * @field: regmap fields which should be freed. + */ +void regmap_field_bulk_free(struct regmap_field *field) +{ + kfree(field); +} +EXPORT_SYMBOL_GPL(regmap_field_bulk_free); + +/** + * devm_regmap_field_bulk_free() - Free a bulk register field allocated using + * devm_regmap_field_bulk_alloc. + * + * @dev: Device that will be interacted with + * @field: regmap field which should be freed. + * + * Free register field allocated using devm_regmap_field_bulk_alloc(). Usually + * drivers need not call this function, as the memory allocated via devm + * will be freed as per device-driver life-cycle. + */ +void devm_regmap_field_bulk_free(struct device *dev, + struct regmap_field *field) +{ + devm_kfree(dev, field); +} +EXPORT_SYMBOL_GPL(devm_regmap_field_bulk_free); + /** * devm_regmap_field_free() - Free a register field allocated using * devm_regmap_field_alloc. diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 0c49d59168b5..a35ec0a0d6e0 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1189,6 +1189,17 @@ struct regmap_field *devm_regmap_field_alloc(struct device *dev, struct regmap *regmap, struct reg_field reg_field); void devm_regmap_field_free(struct device *dev, struct regmap_field *field); +int regmap_field_bulk_alloc(struct regmap *regmap, + struct regmap_field **rm_field, + struct reg_field *reg_field, + int num_fields); +void regmap_field_bulk_free(struct regmap_field *field); +int devm_regmap_field_bulk_alloc(struct device *dev, struct regmap *regmap, + struct regmap_field **field, + struct reg_field *reg_field, int num_fields); +void devm_regmap_field_bulk_free(struct device *dev, + struct regmap_field *field); + int regmap_field_read(struct regmap_field *field, unsigned int *val); int regmap_field_update_bits_base(struct regmap_field *field, unsigned int mask, unsigned int val, From patchwork Fri Sep 25 16:48:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 291566 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 938A5C4363D for ; Fri, 25 Sep 2020 16:51:03 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7E73F208B6 for ; 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[92.233.226.227]) by smtp.gmail.com with ESMTPSA id a5sm3604247wrp.37.2020.09.25.09.49.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2020 09:49:07 -0700 (PDT) From: Srinivas Kandagatla To: broonie@kernel.org Subject: [PATCH v2 2/2] ASoC: lpass-platform: use devm_regmap_field_bulk_alloc Date: Fri, 25 Sep 2020 17:48:56 +0100 Message-Id: <20200925164856.10315-3-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200925164856.10315-1-srinivas.kandagatla@linaro.org> References: <20200925164856.10315-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, srivasam@codeaurora.org, lgirdwood@gmail.com, gregkh@linuxfoundation.org, rafael@kernel.org, tiwai@suse.com, rohitkr@codeaurora.org, Srinivas Kandagatla , linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" use new devm_regmap_field_bulk_alloc to allocate fields as it make the code more readable! Signed-off-by: Srinivas Kandagatla Tested-by: Srinivasa Rao Mandadapu --- sound/soc/qcom/lpass-platform.c | 31 +++++++------------------------ 1 file changed, 7 insertions(+), 24 deletions(-) diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c index df692ed95503..7ac26290082f 100644 --- a/sound/soc/qcom/lpass-platform.c +++ b/sound/soc/qcom/lpass-platform.c @@ -56,6 +56,7 @@ static int lpass_platform_alloc_dmactl_fields(struct device *dev, struct lpass_data *drvdata = dev_get_drvdata(dev); struct lpass_variant *v = drvdata->variant; struct lpaif_dmactl *rd_dmactl, *wr_dmactl; + int rval; drvdata->rd_dmactl = devm_kzalloc(dev, sizeof(struct lpaif_dmactl), GFP_KERNEL); @@ -70,31 +71,13 @@ static int lpass_platform_alloc_dmactl_fields(struct device *dev, rd_dmactl = drvdata->rd_dmactl; wr_dmactl = drvdata->wr_dmactl; - rd_dmactl->bursten = devm_regmap_field_alloc(dev, map, v->rdma_bursten); - rd_dmactl->wpscnt = devm_regmap_field_alloc(dev, map, v->rdma_wpscnt); - rd_dmactl->fifowm = devm_regmap_field_alloc(dev, map, v->rdma_fifowm); - rd_dmactl->intf = devm_regmap_field_alloc(dev, map, v->rdma_intf); - rd_dmactl->enable = devm_regmap_field_alloc(dev, map, v->rdma_enable); - rd_dmactl->dyncclk = devm_regmap_field_alloc(dev, map, v->rdma_dyncclk); + rval = devm_regmap_field_bulk_alloc(dev, map, &rd_dmactl->bursten, + &v->rdma_bursten, 6); + if (rval) + return rval; - if (IS_ERR(rd_dmactl->bursten) || IS_ERR(rd_dmactl->wpscnt) || - IS_ERR(rd_dmactl->fifowm) || IS_ERR(rd_dmactl->intf) || - IS_ERR(rd_dmactl->enable) || IS_ERR(rd_dmactl->dyncclk)) - return -EINVAL; - - wr_dmactl->bursten = devm_regmap_field_alloc(dev, map, v->wrdma_bursten); - wr_dmactl->wpscnt = devm_regmap_field_alloc(dev, map, v->wrdma_wpscnt); - wr_dmactl->fifowm = devm_regmap_field_alloc(dev, map, v->wrdma_fifowm); - wr_dmactl->intf = devm_regmap_field_alloc(dev, map, v->wrdma_intf); - wr_dmactl->enable = devm_regmap_field_alloc(dev, map, v->wrdma_enable); - wr_dmactl->dyncclk = devm_regmap_field_alloc(dev, map, v->wrdma_dyncclk); - - if (IS_ERR(wr_dmactl->bursten) || IS_ERR(wr_dmactl->wpscnt) || - IS_ERR(wr_dmactl->fifowm) || IS_ERR(wr_dmactl->intf) || - IS_ERR(wr_dmactl->enable) || IS_ERR(wr_dmactl->dyncclk)) - return -EINVAL; - - return 0; + return devm_regmap_field_bulk_alloc(dev, map, &wr_dmactl->bursten, + &v->wrdma_bursten, 6); } static int lpass_platform_pcmops_open(struct snd_soc_component *component,