From patchwork Thu Jun 11 11:34:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 11599801 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 E489B90 for ; Thu, 11 Jun 2020 11:47:08 +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 C0DFA2072F for ; Thu, 11 Jun 2020 11:47:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="p+r4MuIQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C0DFA2072F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; 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Thu, 11 Jun 2020 11:47:03 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jjLeh-0006WU-92 for linux-arm-kernel@lists.infradead.org; Thu, 11 Jun 2020 11:46:01 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 14C0C2006D1; Thu, 11 Jun 2020 13:45:55 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 5BAC92006BD; Thu, 11 Jun 2020 13:45:50 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id CE07F402F3; Thu, 11 Jun 2020 19:45:44 +0800 (SGT) From: Anson Huang To: aisheng.dong@nxp.com, festevam@gmail.com, shawnguo@kernel.org, stefan@agner.ch, kernel@pengutronix.de, linus.walleij@linaro.org, s.hauer@pengutronix.de, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH V5 1/9] pinctrl: imx: Support building SCU pinctrl driver as module Date: Thu, 11 Jun 2020 19:34:47 +0800 Message-Id: <1591875295-19427-2-git-send-email-Anson.Huang@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591875295-19427-1-git-send-email-Anson.Huang@nxp.com> References: <1591875295-19427-1-git-send-email-Anson.Huang@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200611_044559_590768_AA85B928 X-CRM114-Status: GOOD ( 15.51 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linux-imx@nxp.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org To support building i.MX SCU pinctrl driver as module, below things need to be changed: - Export SCU related functions and use "IS_ENABLED" instead of "ifdef" to support SCU pinctrl driver user and itself to be built as module; - Use function callbacks for SCU related functions in pinctrl-imx.c in order to support the scenario of PINCTRL_IMX is built in while PINCTRL_IMX_SCU is built as module; - All drivers using SCU pinctrl driver need to initialize the SCU related function callback; - Change PINCTR_IMX_SCU to tristate; - Add module author, description and license. With above changes, i.MX SCU pinctrl driver can be built as module. Signed-off-by: Anson Huang --- Changes since V4: - add module author and description. --- drivers/pinctrl/freescale/Kconfig | 2 +- drivers/pinctrl/freescale/pinctrl-imx.c | 18 ++++----- drivers/pinctrl/freescale/pinctrl-imx.h | 57 ++++++++++++----------------- drivers/pinctrl/freescale/pinctrl-imx8dxl.c | 3 ++ drivers/pinctrl/freescale/pinctrl-imx8qm.c | 3 ++ drivers/pinctrl/freescale/pinctrl-imx8qxp.c | 3 ++ drivers/pinctrl/freescale/pinctrl-scu.c | 9 +++++ 7 files changed, 51 insertions(+), 44 deletions(-) diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig index 4ca44dd..a3a30f1d 100644 --- a/drivers/pinctrl/freescale/Kconfig +++ b/drivers/pinctrl/freescale/Kconfig @@ -7,7 +7,7 @@ config PINCTRL_IMX select REGMAP config PINCTRL_IMX_SCU - bool + tristate "IMX SCU pinctrl driver" depends on IMX_SCU select PINCTRL_IMX diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index cb7e0f0..c1faae1 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -372,8 +372,8 @@ static int imx_pinconf_get(struct pinctrl_dev *pctldev, struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev); const struct imx_pinctrl_soc_info *info = ipctl->info; - if (info->flags & IMX_USE_SCU) - return imx_pinconf_get_scu(pctldev, pin_id, config); + if ((info->flags & IMX_USE_SCU) && info->imx_pinconf_get) + return info->imx_pinconf_get(pctldev, pin_id, config); else return imx_pinconf_get_mmio(pctldev, pin_id, config); } @@ -422,8 +422,8 @@ static int imx_pinconf_set(struct pinctrl_dev *pctldev, struct imx_pinctrl *ipctl = pinctrl_dev_get_drvdata(pctldev); const struct imx_pinctrl_soc_info *info = ipctl->info; - if (info->flags & IMX_USE_SCU) - return imx_pinconf_set_scu(pctldev, pin_id, + if ((info->flags & IMX_USE_SCU) && info->imx_pinconf_set) + return info->imx_pinconf_set(pctldev, pin_id, configs, num_configs); else return imx_pinconf_set_mmio(pctldev, pin_id, @@ -439,8 +439,8 @@ static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev, unsigned long config; int ret; - if (info->flags & IMX_USE_SCU) { - ret = imx_pinconf_get_scu(pctldev, pin_id, &config); + if ((info->flags & IMX_USE_SCU) && info->imx_pinconf_get) { + ret = info->imx_pinconf_get(pctldev, pin_id, &config); if (ret) { dev_err(ipctl->dev, "failed to get %s pinconf\n", pin_get_name(pctldev, pin_id)); @@ -628,9 +628,9 @@ static int imx_pinctrl_parse_groups(struct device_node *np, for (i = 0; i < grp->num_pins; i++) { pin = &((struct imx_pin *)(grp->data))[i]; - if (info->flags & IMX_USE_SCU) - imx_pinctrl_parse_pin_scu(ipctl, &grp->pins[i], - pin, &list); + if ((info->flags & IMX_USE_SCU) && info->imx_pinctrl_parse_pin) + info->imx_pinctrl_parse_pin(ipctl, &grp->pins[i], + pin, &list); else imx_pinctrl_parse_pin_mmio(ipctl, &grp->pins[i], pin, &list, np); diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h index 333d32b..bdb86c2 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.h +++ b/drivers/pinctrl/freescale/pinctrl-imx.h @@ -75,6 +75,21 @@ struct imx_cfg_params_decode { bool invert; }; +/** + * @dev: a pointer back to containing device + * @base: the offset to the controller in virtual memory + */ +struct imx_pinctrl { + struct device *dev; + struct pinctrl_dev *pctl; + void __iomem *base; + void __iomem *input_sel_base; + const struct imx_pinctrl_soc_info *info; + struct imx_pin_reg *pin_regs; + unsigned int group_index; + struct mutex mutex; +}; + struct imx_pinctrl_soc_info { const struct pinctrl_pin_desc *pins; unsigned int npins; @@ -98,21 +113,13 @@ struct imx_pinctrl_soc_info { struct pinctrl_gpio_range *range, unsigned offset, bool input); -}; - -/** - * @dev: a pointer back to containing device - * @base: the offset to the controller in virtual memory - */ -struct imx_pinctrl { - struct device *dev; - struct pinctrl_dev *pctl; - void __iomem *base; - void __iomem *input_sel_base; - const struct imx_pinctrl_soc_info *info; - struct imx_pin_reg *pin_regs; - unsigned int group_index; - struct mutex mutex; + int (*imx_pinconf_get)(struct pinctrl_dev *pctldev, unsigned int pin_id, + unsigned long *config); + int (*imx_pinconf_set)(struct pinctrl_dev *pctldev, unsigned int pin_id, + unsigned long *configs, unsigned int num_configs); + void (*imx_pinctrl_parse_pin)(struct imx_pinctrl *ipctl, + unsigned int *pin_id, struct imx_pin *pin, + const __be32 **list_p); }; #define IMX_CFG_PARAMS_DECODE(p, m, o) \ @@ -137,7 +144,7 @@ struct imx_pinctrl { int imx_pinctrl_probe(struct platform_device *pdev, const struct imx_pinctrl_soc_info *info); -#ifdef CONFIG_PINCTRL_IMX_SCU +#if IS_ENABLED(CONFIG_PINCTRL_IMX_SCU) #define BM_PAD_CTL_GP_ENABLE BIT(30) #define BM_PAD_CTL_IFMUX_ENABLE BIT(31) #define BP_PAD_CTL_IFMUX 27 @@ -150,23 +157,5 @@ int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id, void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, unsigned int *pin_id, struct imx_pin *pin, const __be32 **list_p); -#else -static inline int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, - unsigned pin_id, unsigned long *config) -{ - return -EINVAL; -} -static inline int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, - unsigned pin_id, unsigned long *configs, - unsigned num_configs) -{ - return -EINVAL; -} -static inline void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, - unsigned int *pin_id, - struct imx_pin *pin, - const __be32 **list_p) -{ -} #endif #endif /* __DRIVERS_PINCTRL_IMX_H */ diff --git a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c index 7f32e57..be3b09e 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx8dxl.c +++ b/drivers/pinctrl/freescale/pinctrl-imx8dxl.c @@ -159,6 +159,9 @@ static struct imx_pinctrl_soc_info imx8dxl_pinctrl_info = { .pins = imx8dxl_pinctrl_pads, .npins = ARRAY_SIZE(imx8dxl_pinctrl_pads), .flags = IMX_USE_SCU, + .imx_pinconf_get = imx_pinconf_get_scu, + .imx_pinconf_set = imx_pinconf_set_scu, + .imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu, }; static const struct of_device_id imx8dxl_pinctrl_of_match[] = { diff --git a/drivers/pinctrl/freescale/pinctrl-imx8qm.c b/drivers/pinctrl/freescale/pinctrl-imx8qm.c index 0b6029b..9ba3249 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx8qm.c +++ b/drivers/pinctrl/freescale/pinctrl-imx8qm.c @@ -292,6 +292,9 @@ static const struct imx_pinctrl_soc_info imx8qm_pinctrl_info = { .pins = imx8qm_pinctrl_pads, .npins = ARRAY_SIZE(imx8qm_pinctrl_pads), .flags = IMX_USE_SCU, + .imx_pinconf_get = imx_pinconf_get_scu, + .imx_pinconf_set = imx_pinconf_set_scu, + .imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu, }; static const struct of_device_id imx8qm_pinctrl_of_match[] = { diff --git a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c index 1131dc3..05906b9 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx8qxp.c +++ b/drivers/pinctrl/freescale/pinctrl-imx8qxp.c @@ -198,6 +198,9 @@ static struct imx_pinctrl_soc_info imx8qxp_pinctrl_info = { .pins = imx8qxp_pinctrl_pads, .npins = ARRAY_SIZE(imx8qxp_pinctrl_pads), .flags = IMX_USE_SCU, + .imx_pinconf_get = imx_pinconf_get_scu, + .imx_pinconf_set = imx_pinconf_set_scu, + .imx_pinctrl_parse_pin = imx_pinctrl_parse_pin_scu, }; static const struct of_device_id imx8qxp_pinctrl_of_match[] = { diff --git a/drivers/pinctrl/freescale/pinctrl-scu.c b/drivers/pinctrl/freescale/pinctrl-scu.c index 23cf04b..59b5f8a 100644 --- a/drivers/pinctrl/freescale/pinctrl-scu.c +++ b/drivers/pinctrl/freescale/pinctrl-scu.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -41,6 +42,7 @@ int imx_pinctrl_sc_ipc_init(struct platform_device *pdev) { return imx_scu_get_handle(&pinctrl_ipc_handle); } +EXPORT_SYMBOL_GPL(imx_pinctrl_sc_ipc_init); int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, unsigned pin_id, unsigned long *config) @@ -66,6 +68,7 @@ int imx_pinconf_get_scu(struct pinctrl_dev *pctldev, unsigned pin_id, return 0; } +EXPORT_SYMBOL_GPL(imx_pinconf_get_scu); int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id, unsigned long *configs, unsigned num_configs) @@ -101,6 +104,7 @@ int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id, return ret; } +EXPORT_SYMBOL_GPL(imx_pinconf_set_scu); void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, unsigned int *pin_id, struct imx_pin *pin, @@ -119,3 +123,8 @@ void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl, dev_dbg(ipctl->dev, "%s: 0x%x 0x%08lx", info->pins[pin->pin].name, pin_scu->mux_mode, pin_scu->config); } +EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu); + +MODULE_AUTHOR("Dong Aisheng "); +MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver"); +MODULE_LICENSE("GPL v2");