From patchwork Tue Dec 31 13:41:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Light Hsieh X-Patchwork-Id: 11314213 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 80119921 for ; Tue, 31 Dec 2019 13:52:02 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5D432205ED for ; Tue, 31 Dec 2019 13:52:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="VVzbd+Bi"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="SuPrK7A2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5D432205ED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=AunU0r+dLJBXXcjKtbfP7agFX7zk7ZsdG0VQAUBvofM=; b=VVzbd+BiBz/QbN +AYimu0VM58/zflIzXsTOT8yeSTD0gA1CCs9TknFMu5pOKnZXJ1Xd8APV02lJJ+OY2og+2ITdL5t8 UfTLvRtt40zu2h3Qw5ybh5hHPVjw+jRyj2a134hVoIpktiI/1CNKb1lI9pyrkkg3qvU1tjV8hAq5c 8k5PhSzOKHzw2KYJaYsPjHOPy8DTYZJBgT89wPS5sP4LsugcP1/El6gtqI9gKURTwEfDq6uz1NZLm gTgJ9O1ixv9/2dYdC8YRdUN9whhxw69s4SSlVCNM/KS0OwjjXtxg5uICw19+9iCt576IUSU7kFai7 DcI+bAGoP6AFZ0e+carw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1imHwG-0006Zn-2R; Tue, 31 Dec 2019 13:52:00 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1imHwC-0006Xp-SH for linux-mediatek@lists.infradead.org; Tue, 31 Dec 2019 13:51:58 +0000 X-UUID: 20eeb316e7504e7ba85f05ee0d1c5807-20191231 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=z3pZFT+6t8ylWCp7AMGBvI067vp4npjbNdsiLxU09zM=; b=SuPrK7A2wsSKEWknPVXkflkhacOSI812EAZI2Kh6yIHY+5xTpgeK1eUTUUgYrz9PA2Lcem1yvryAcst20y2Ndc4zPOwe/I1mniO/JhUfO0Zv2oE689ulPiS5AB7CKLzKeozMCGrkvEyVTlugDsR08a4vvSRZGE51Qw3ogCAaImM=; X-UUID: 20eeb316e7504e7ba85f05ee0d1c5807-20191231 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1126686280; Tue, 31 Dec 2019 05:51:53 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 31 Dec 2019 05:42:10 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 31 Dec 2019 21:41:05 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Tue, 31 Dec 2019 21:41:17 +0800 From: Light Hsieh To: Subject: [PATCH v7 6/6] Add support for pin configuration dump via debugfs. Date: Tue, 31 Dec 2019 21:41:47 +0800 Message-ID: <1577799707-11855-6-git-send-email-light.hsieh@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1577799707-11855-1-git-send-email-light.hsieh@mediatek.com> References: <1577799707-11855-1-git-send-email-light.hsieh@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 32219F344A537A986D604800AECCF3AE49384A06C2C055A05C0A4F98DFB81C412000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191231_055156_924175_FD0F213B X-CRM114-Status: GOOD ( 11.79 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 MIME_BASE64_TEXT RAW: Message text disguised using base64 encoding -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: sean.wang@kernel.org, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, Light Hsieh , linux-gpio@vger.kernel.org, linux-mediatek@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Add support for pin configuration dump via catting /sys/kernel/debug/pinctrl/$platform_dependent_path/pinconf-pins. pinctrl framework had already support such dump. This patch implement the operation function pointer to fullfill this dump. Change-Id: I823642561adaedb847e77f9a8baea182913d6163 --- drivers/pinctrl/mediatek/pinctrl-paris.c | 109 +++++++++++++++++++++++++++++++ drivers/pinctrl/mediatek/pinctrl-paris.h | 3 + 2 files changed, 112 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c index 115ebc1..83bf29c 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.c +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c @@ -539,12 +539,120 @@ static int mtk_pctrl_get_group_pins(struct pinctrl_dev *pctldev, return 0; } +static int mtk_hw_get_value_wrap(struct mtk_pinctrl *hw, unsigned int gpio, int field) +{ + const struct mtk_pin_desc *desc; + int value, err; + + if (gpio > hw->soc->npins) + return -EINVAL; + + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio]; + + err = mtk_hw_get_value(hw, desc, field, &value); + if (err) + return err; + + return value; +} + +#define mtk_pctrl_get_pinmux(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_MODE) + +#define mtk_pctrl_get_direction(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DIR) + +#define mtk_pctrl_get_out(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DO) + +#define mtk_pctrl_get_in(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DI) + +#define mtk_pctrl_get_smt(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_SMT) + +#define mtk_pctrl_get_ies(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_IES) + +#define mtk_pctrl_get_driving(hw, gpio) \ + mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DRV) + +ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw, + unsigned int gpio, char *buf, unsigned int bufLen) +{ + int pinmux, pullup, pullen, len = 0, r1 = -1, r0 = -1; + const struct mtk_pin_desc *desc; + + if (gpio > hw->soc->npins) + return -EINVAL; + + desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio]; + pinmux = mtk_pctrl_get_pinmux(hw, gpio); + if (pinmux >= hw->soc->nfuncs) + pinmux -= hw->soc->nfuncs; + + mtk_pinconf_bias_get_combo(hw, desc, &pullup, &pullen); + if (pullen == MTK_PUPD_SET_R1R0_00) { + pullen = 0; + r1 = 0; + r0 = 0; + } else if (pullen == MTK_PUPD_SET_R1R0_01) { + pullen = 1; + r1 = 0; + r0 = 1; + } else if (pullen == MTK_PUPD_SET_R1R0_10) { + pullen = 1; + r1 = 1; + r0 = 0; + } else if (pullen == MTK_PUPD_SET_R1R0_11) { + pullen = 1; + r1 = 1; + r0 = 1; + } else if (pullen != MTK_DISABLE && pullen != MTK_ENABLE) { + pullen = 0; + } + len += snprintf(buf + len, bufLen - len, + "%03d: %1d%1d%1d%1d%02d%1d%1d%1d%1d", + gpio, + pinmux, + mtk_pctrl_get_direction(hw, gpio), + mtk_pctrl_get_out(hw, gpio), + mtk_pctrl_get_in(hw, gpio), + mtk_pctrl_get_driving(hw, gpio), + mtk_pctrl_get_smt(hw, gpio), + mtk_pctrl_get_ies(hw, gpio), + pullen, + pullup); + + if (r1 != -1) { + len += snprintf(buf + len, bufLen - len, " (%1d %1d)\n", + r1, r0); + } else { + len += snprintf(buf + len, bufLen - len, "\n"); + } + + return len; +} + +#define PIN_DBG_BUF_SZ 96 +static void mtk_pctrl_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, + unsigned int gpio) +{ + struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev); + char buf[PIN_DBG_BUF_SZ]; + + (void)mtk_pctrl_show_one_pin(hw, gpio, buf, PIN_DBG_BUF_SZ); + + seq_printf(s, "%s", buf); +} + static const struct pinctrl_ops mtk_pctlops = { .dt_node_to_map = mtk_pctrl_dt_node_to_map, .dt_free_map = pinctrl_utils_free_map, .get_groups_count = mtk_pctrl_get_groups_count, .get_group_name = mtk_pctrl_get_group_name, .get_group_pins = mtk_pctrl_get_group_pins, + .pin_dbg_show = mtk_pctrl_dbg_show, }; static int mtk_pmx_get_funcs_cnt(struct pinctrl_dev *pctldev) @@ -641,6 +749,7 @@ static int mtk_pconf_group_set(struct pinctrl_dev *pctldev, unsigned group, .pin_config_get = mtk_pinconf_get, .pin_config_group_get = mtk_pconf_group_get, .pin_config_group_set = mtk_pconf_group_set, + .is_generic = true, }; static struct pinctrl_desc mtk_desc = { diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.h b/drivers/pinctrl/mediatek/pinctrl-paris.h index 3d43771..afb7650 100644 --- a/drivers/pinctrl/mediatek/pinctrl-paris.h +++ b/drivers/pinctrl/mediatek/pinctrl-paris.h @@ -60,6 +60,9 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev, const struct mtk_pin_soc *soc); +ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw, + unsigned int gpio, char *buf, unsigned int bufLen); + extern const struct dev_pm_ops mtk_paris_pinctrl_pm_ops; #endif /* __PINCTRL_PARIS_H */