From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A156EB64DB for ; Tue, 20 Jun 2023 10:44:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232226AbjFTKoW (ORCPT ); Tue, 20 Jun 2023 06:44:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60300 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232055AbjFTKoR (ORCPT ); Tue, 20 Jun 2023 06:44:17 -0400 Received: from mx07-00178001.pphosted.com (mx07-00178001.pphosted.com [185.132.182.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 013191A7; Tue, 20 Jun 2023 03:44:13 -0700 (PDT) Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35KA5E4a025191; Tue, 20 Jun 2023 12:43:58 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding : content-type; s=selector1; bh=6ckVMdQBLD6uf0OTmHIXjelJ5Xb/M+DmDKyAJyiEvvg=; b=rUe8vw5eg/sL+NEruac1H8ZSt1Sd5fgSR70gQfBvw07ry3+uwonaJcOfcjhUsSYZaxTN GeIKRRpwCed9vSLL4XnFruISjAmmuUUQqk0C5BRMPtRkQdBJHNLADQA9E9X/09yVxsBb T69V/zqqyBbo+7HXhIgYeq+YShNnk+6SWg93J8cJ53utABXOZCZy9lHw7aSw1Rckjox8 qEyrgHyDMBBlQ006iOXinpXcKBDGyupYOaT96Ln3pBHaOV+GrUKJbSrc+y3U7JkfII7B zgmutRl0ta+AhFmj0WD4atEscD2t6+oQIay6Pzm1T7ikRRfHzRE7fgbZuuTNewT1AxHN xw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3rb8k8s9wr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 20 Jun 2023 12:43:58 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 3711310002A; Tue, 20 Jun 2023 12:43:57 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 1985E226FDE; Tue, 20 Jun 2023 12:43:57 +0200 (CEST) Received: from localhost (10.201.20.168) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Tue, 20 Jun 2023 12:43:56 +0200 From: Valentin Caron To: Linus Walleij CC: Alexandre Torgue , , , , , Valentin Caron Subject: [PATCH] pinctrl: stm32: set default gpio line names using pin names Date: Tue, 20 Jun 2023 12:43:49 +0200 Message-ID: <20230620104349.834687-1-valentin.caron@foss.st.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.201.20.168] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-20_07,2023-06-16_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Add stm32_pctrl_get_desc_pin_from_gpio function to find a stm32 pin descriptor which is matching with a gpio. Most of the time pin number is equal to pin index in array. So the first part of the function is useful to speed up. And during gpio bank register, we set default gpio names with pin names. Signed-off-by: Valentin Caron --- drivers/pinctrl/stm32/pinctrl-stm32.c | 35 +++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c index 4b97bd00191b..eedbb9b97a65 100644 --- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -1275,6 +1275,28 @@ static const struct pinconf_ops stm32_pconf_ops = { .pin_config_dbg_show = stm32_pconf_dbg_show, }; +static struct stm32_desc_pin *stm32_pctrl_get_desc_pin_from_gpio(struct stm32_pinctrl *pctl, + struct stm32_gpio_bank *bank, + unsigned int offset) +{ + unsigned int stm32_pin_nb = bank->bank_nr * STM32_GPIO_PINS_PER_BANK + offset; + struct stm32_desc_pin *pin_desc; + int i; + + /* With few exceptions (e.g. bank 'Z'), pin number matches with pin index in array */ + pin_desc = pctl->pins + stm32_pin_nb; + if (pin_desc->pin.number == stm32_pin_nb) + return pin_desc; + + /* Otherwise, loop all array to find the pin with the right number */ + for (i = 0; i < pctl->npins; i++) { + pin_desc = pctl->pins + i; + if (pin_desc->pin.number == stm32_pin_nb) + return pin_desc; + } + return NULL; +} + static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode_handle *fwnode) { struct stm32_gpio_bank *bank = &pctl->banks[pctl->nbanks]; @@ -1285,6 +1307,8 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode struct resource res; int npins = STM32_GPIO_PINS_PER_BANK; int bank_nr, err, i = 0; + struct stm32_desc_pin *stm32_pin; + char **names; if (!IS_ERR(bank->rstc)) reset_control_deassert(bank->rstc); @@ -1354,6 +1378,17 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode } } + names = devm_kcalloc(dev, npins, sizeof(char *), GFP_KERNEL); + for (i = 0; i < npins; i++) { + stm32_pin = stm32_pctrl_get_desc_pin_from_gpio(pctl, bank, i); + if (stm32_pin && stm32_pin->pin.name) + names[i] = devm_kasprintf(dev, GFP_KERNEL, "%s", stm32_pin->pin.name); + else + names[i] = NULL; + } + + bank->gpio_chip.names = (const char * const *)names; + err = gpiochip_add_data(&bank->gpio_chip, bank); if (err) { dev_err(dev, "Failed to add gpiochip(%d)!\n", bank_nr); -- 2.25.1