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Fri, 14 Feb 2020 03:02:32 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 14 Feb 2020 03:03:14 -0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 14 Feb 2020 18:59:53 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 14 Feb 2020 19:01:47 +0800 Message-ID: <1581678137.724.9.camel@mtkswgap22> Subject: Re: [PATCH v1 1/2] pinctrl: make MediaTek pinctrl v2 driver ready for buidling kernel module From: Light Hsieh To: Matthias Brugger Date: Fri, 14 Feb 2020 19:02:17 +0800 In-Reply-To: References: <1581574105-1160-1-git-send-email-light.hsieh@mediatek.com> <1581574624.1827.4.camel@mtkswgap22> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-TM-SNTS-SMTP: 430B91F2C81B2B5EEC5340E3CB9259BCC9C297EBFC23162FF966BD4A63A6AF5F2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200214_030242_095122_37F09FC6 X-CRM114-Status: GOOD ( 19.86 ) 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: linus.walleij@linaro.org, sean.wang@kernel.org, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-mediatek@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Fri, 2020-02-14 at 11:37 +0100, Matthias Brugger wrote: > > On 13/02/2020 07:17, Light Hsieh wrote: > > Dear Reviewers: > > > > Google plan to make platform driver as kernel module in future Android > > kernel. > > This patch series prepare to make platforms that use MediaTek pinctrl > > paris driver (pinctrl-paris.c, pinctrl-mtk-common-v2.c, and mtk-eint.c) > > compatible for building either kernel module or built-in. > > > > Please give your comments. > > > > I think I didn't explain myself good enough. > These should be three patches: > > 1. change mtk-eint driver + Kconfig to be loadable as a module > 2. change pinctrl-paris + Kconfig to be loadable as a module > 3. change mt6765. > > Please make sure that every patch compiles and does not break the system. This > will later help to use git-bisect to hunt down bugs in the kernel. > > Regards, > Matthias > Actually, I don't understand the necessity of splitting into 2 or 3 patches. 1. mtk-eint cannot be built as loadable module when pinctrl-paris and pinctrl-mtk-common-v2 is not built as loadable module. 2. pinctrl-paris and pinctrl-mtk-common-v2 cannot be built as loadable module when pinctrl-mtk6765 is not built as loadable module 3. besides, if pinctrl-mtk675 and any other MediaTek platform pinctrl driver that use mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 are built-in, mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 cannot be built as loadable module. The rationale can be learned from the description of change made to Kconfig and Makefile. So, just applying patch 1 and patch 2 of your proposal does not make sense. BR. Light > > Light > > > > On Thu, 2020-02-13 at 14:08 +0800, light.hsieh@mediatek.com wrote: > >> From: Light Hsieh > >> > >> Google plan to make platform driver as kernel module for future > >> Andriod kernel. This patch make platforms that use pinctrl-paris.c > >> of MediaTek pinctrl v2 ready for building kernel module. > >> > >> Signed-off-by: Light Hsieh > >> --- > >> drivers/pinctrl/mediatek/mtk-eint.c | 9 +++++++++ > >> drivers/pinctrl/mediatek/pinctrl-mt6765.c | 4 ++++ > >> drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++ > >> drivers/pinctrl/mediatek/pinctrl-paris.c | 5 +++++ > >> drivers/pinctrl/pinconf-generic.c | 1 + > >> 5 files changed, 43 insertions(+) > >> > >> diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c > >> index 7e526bcf..99703a8 100644 > >> --- a/drivers/pinctrl/mediatek/mtk-eint.c > >> +++ b/drivers/pinctrl/mediatek/mtk-eint.c > >> @@ -9,6 +9,7 @@ > >> * > >> */ > >> > >> +#include > >> #include > >> #include > >> #include > >> @@ -379,6 +380,7 @@ int mtk_eint_do_suspend(struct mtk_eint *eint) > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_eint_do_suspend); > >> > >> int mtk_eint_do_resume(struct mtk_eint *eint) > >> { > >> @@ -386,6 +388,7 @@ int mtk_eint_do_resume(struct mtk_eint *eint) > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_eint_do_resume); > >> > >> int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num, > >> unsigned int debounce) > >> @@ -440,6 +443,7 @@ int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_eint_set_debounce); > >> > >> int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n) > >> { > >> @@ -451,6 +455,7 @@ int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n) > >> > >> return irq; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_eint_find_irq); > >> > >> int mtk_eint_do_init(struct mtk_eint *eint) > >> { > >> @@ -495,3 +500,7 @@ int mtk_eint_do_init(struct mtk_eint *eint) > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_eint_do_init); > >> + > >> +MODULE_LICENSE("GPL v2"); > >> +MODULE_DESCRIPTION("MediaTek EINT Driver"); > >> diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c > >> index 905dae8c..2c59d39 100644 > >> --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c > >> +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c > >> @@ -6,6 +6,7 @@ > >> * > >> */ > >> > >> +#include > >> #include "pinctrl-mtk-mt6765.h" > >> #include "pinctrl-paris.h" > >> > >> @@ -1103,3 +1104,6 @@ static int __init mt6765_pinctrl_init(void) > >> return platform_driver_register(&mt6765_pinctrl_driver); > >> } > >> arch_initcall(mt6765_pinctrl_init); > >> + > >> +MODULE_LICENSE("GPL v2"); > >> +MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver"); > >> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > >> index 1da9425..cdf2d69 100644 > >> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > >> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c > >> @@ -6,6 +6,7 @@ > >> * > >> */ > >> > >> +#include > >> #include > >> #include > >> #include > >> @@ -206,6 +207,7 @@ int mtk_hw_set_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_hw_set_value); > >> > >> int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, > >> int field, int *value) > >> @@ -225,6 +227,7 @@ int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_hw_get_value); > >> > >> static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n) > >> { > >> @@ -363,6 +366,7 @@ int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev) > >> > >> return mtk_eint_do_init(hw->eint); > >> } > >> +EXPORT_SYMBOL_GPL(mtk_build_eint); > >> > >> /* Revision 0 */ > >> int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw, > >> @@ -382,6 +386,7 @@ int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set); > >> > >> int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, int *res) > >> @@ -404,6 +409,7 @@ int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get); > >> > >> int mtk_pinconf_bias_set(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup) > >> @@ -423,6 +429,7 @@ int mtk_pinconf_bias_set(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set); > >> > >> int mtk_pinconf_bias_get(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup, int *res) > >> @@ -442,6 +449,7 @@ int mtk_pinconf_bias_get(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get); > >> > >> /* Revision 1 */ > >> int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw, > >> @@ -456,6 +464,7 @@ int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1); > >> > >> int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, int *res) > >> @@ -473,6 +482,7 @@ int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get_rev1); > >> > >> int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup) > >> @@ -492,6 +502,7 @@ int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_rev1); > >> > >> int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup, > >> @@ -517,6 +528,7 @@ int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_gev1); > >> > >> /* Combo for the following pull register type: > >> * 1. PU + PD > >> @@ -717,6 +729,7 @@ int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, > >> out: > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo); > >> > >> int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, > >> @@ -737,6 +750,7 @@ int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, > >> out: > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_combo); > >> > >> /* Revision 0 */ > >> int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, > >> @@ -766,6 +780,7 @@ int mtk_pinconf_drive_set(struct mtk_pinctrl *hw, > >> > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set); > >> > >> int mtk_pinconf_drive_get(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, int *val) > >> @@ -790,6 +805,7 @@ int mtk_pinconf_drive_get(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get); > >> > >> /* Revision 1 */ > >> int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw, > >> @@ -811,6 +827,7 @@ int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw, > >> > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_rev1); > >> > >> int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, int *val) > >> @@ -828,18 +845,21 @@ int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_rev1); > >> > >> int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, u32 arg) > >> { > >> return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV, arg); > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_raw); > >> > >> int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, int *val) > >> { > >> return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, val); > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_raw); > >> > >> int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup, > >> @@ -880,6 +900,7 @@ int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw, > >> > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_set); > >> > >> int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, bool pullup, > >> @@ -922,6 +943,7 @@ int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_get); > >> > >> int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, u32 arg) > >> @@ -948,6 +970,7 @@ int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw, > >> > >> return err; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_set); > >> > >> int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw, > >> const struct mtk_pin_desc *desc, u32 *val) > >> @@ -971,3 +994,4 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw, > >> > >> return 0; > >> } > >> +EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get); > >> diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c > >> index 83bf29c..af97794 100644 > >> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c > >> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c > >> @@ -9,6 +9,7 @@ > >> * Hongzhou.Yang > >> */ > >> > >> +#include > >> #include > >> #include > >> #include "pinctrl-paris.h" > >> @@ -1037,3 +1038,7 @@ static int mtk_paris_pinctrl_resume(struct device *device) > >> .suspend_noirq = mtk_paris_pinctrl_suspend, > >> .resume_noirq = mtk_paris_pinctrl_resume, > >> }; > >> +EXPORT_SYMBOL_GPL(mtk_paris_pinctrl_probe); > >> + > >> +MODULE_LICENSE("GPL v2"); > >> +MODULE_DESCRIPTION("MediaTek Pinctrl Common Driver V2 Paris"); > >> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c > >> index 9eb8630..dfef471 100644 > >> --- a/drivers/pinctrl/pinconf-generic.c > >> +++ b/drivers/pinctrl/pinconf-generic.c > >> @@ -286,6 +286,7 @@ int pinconf_generic_parse_dt_config(struct device_node *np, > >> kfree(cfg); > >> return ret; > >> } > >> +EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config); > >> > >> int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev, > >> struct device_node *np, struct pinctrl_map **map, > > > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek > > _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek