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Mon, 03 Aug 2020 20:25:50 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 3 Aug 2020 21:15:45 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 4 Aug 2020 12:15:46 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 4 Aug 2020 12:15:46 +0800 Message-ID: <1596514546.32283.29.camel@mtkswgap22> Subject: Re: [v2,5/6] reset-controller: ti: Introduce force-update method From: Stanley Chu To: Crystal Guo Date: Tue, 4 Aug 2020 12:15:46 +0800 In-Reply-To: <20200803061511.29555-6-crystal.guo@mediatek.com> References: <20200803061511.29555-1-crystal.guo@mediatek.com> <20200803061511.29555-6-crystal.guo@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-TM-SNTS-SMTP: F731C297E4C566B4F072E2A72C27549312D9B54D96BA0768F50EF657855B62E32000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200804_003414_756646_24CC6EEB X-CRM114-Status: GOOD ( 17.53 ) 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: yong.liang@mediatek.com, srv_heupstream@mediatek.com, seiya.wang@mediatek.com, linux-kernel@vger.kernel.org, fan.chen@mediatek.com, robh+dt@kernel.org, linux-mediatek@lists.infradead.org, p.zabel@pengutronix.de, matthias.bgg@gmail.com, yingjoe.chen@mediatek.com, linux-arm-kernel@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 Mon, 2020-08-03 at 14:15 +0800, Crystal Guo wrote: > Introduce force-update method for assert and deassert interface, > which force the write operation in case the read already happens > to return the correct value. > > Signed-off-by: Crystal Guo > --- > drivers/reset/reset-ti-syscon.c | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > diff --git a/drivers/reset/reset-ti-syscon.c b/drivers/reset/reset-ti-syscon.c > index 1c74bcb9a6c3..f4baf78afd14 100644 > --- a/drivers/reset/reset-ti-syscon.c > +++ b/drivers/reset/reset-ti-syscon.c > @@ -57,6 +57,7 @@ struct ti_syscon_reset_data { > struct ti_syscon_reset_control *controls; > unsigned int nr_controls; > bool assert_deassert_together; > + bool update_force; > }; > > #define to_ti_syscon_reset_data(rcdev) \ > @@ -90,7 +91,10 @@ static int ti_syscon_reset_assert(struct reset_controller_dev *rcdev, > mask = BIT(control->assert_bit); > value = (control->flags & ASSERT_SET) ? mask : 0x0; > > - return regmap_update_bits(data->regmap, control->assert_offset, mask, value); > + if (data->update_force) > + return regmap_write_bits(data->regmap, control->assert_offset, mask, value); > + else > + return regmap_update_bits(data->regmap, control->assert_offset, mask, value); > } > > /** > @@ -121,7 +125,10 @@ static int ti_syscon_reset_deassert(struct reset_controller_dev *rcdev, > mask = BIT(control->deassert_bit); > value = (control->flags & DEASSERT_SET) ? mask : 0x0; > > - return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); > + if (data->update_force) > + return regmap_write_bits(data->regmap, control->deassert_offset, mask, value); > + else > + return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); > } > > /** > @@ -223,6 +230,10 @@ static int ti_syscon_reset_probe(struct platform_device *pdev) > data->assert_deassert_together = true; > else > data->assert_deassert_together = false; > + if (of_property_read_bool(np, "update-force")) > + data->update_force = true; > + else > + data->update_force = false; > > data->rcdev.ops = &ti_syscon_reset_ops; > data->rcdev.owner = THIS_MODULE; This patch is good to help MediaTek drivers' transition to use ti-syscon-reset-controller, also not have side effect to existed users. Acked-by: Stanley Chu _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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 X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_2 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 67EE2C433E0 for ; Tue, 4 Aug 2020 04:35:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 5B288206F6 for ; 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bh=Yktds26mQO27rxfVid1topcTCyi1DOqMyji8rDcAx+Q=; b=QnKE1/cYdNQA4DxtVCekO5SKeeupV1mNbU70SFh1b+aZHbsQP/aB5HjKo2ep0xmHDtGQlc28C7IVP9hMPiWrFzOo5tPUkTirUzKdtxaBOc1f66RV/AQUDZ2pmiB74nXBUmfM47ZaLYGYR0JFNAf/T3MZrzOu5VPlARZEUPR/qEw=; X-UUID: 70311d21410947e6ba6585a5971497d2-20200803 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1382501360; Mon, 03 Aug 2020 20:25:50 -0800 Received: from MTKMBS02N2.mediatek.inc (172.21.101.101) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 3 Aug 2020 21:15:45 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 4 Aug 2020 12:15:46 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 4 Aug 2020 12:15:46 +0800 Message-ID: <1596514546.32283.29.camel@mtkswgap22> Subject: Re: [v2,5/6] reset-controller: ti: Introduce force-update method From: Stanley Chu To: Crystal Guo Date: Tue, 4 Aug 2020 12:15:46 +0800 In-Reply-To: <20200803061511.29555-6-crystal.guo@mediatek.com> References: <20200803061511.29555-1-crystal.guo@mediatek.com> <20200803061511.29555-6-crystal.guo@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-TM-SNTS-SMTP: F731C297E4C566B4F072E2A72C27549312D9B54D96BA0768F50EF657855B62E32000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200804_003414_756646_24CC6EEB X-CRM114-Status: GOOD ( 17.53 ) 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: yong.liang@mediatek.com, srv_heupstream@mediatek.com, seiya.wang@mediatek.com, linux-kernel@vger.kernel.org, fan.chen@mediatek.com, robh+dt@kernel.org, linux-mediatek@lists.infradead.org, p.zabel@pengutronix.de, matthias.bgg@gmail.com, yingjoe.chen@mediatek.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 2020-08-03 at 14:15 +0800, Crystal Guo wrote: > Introduce force-update method for assert and deassert interface, > which force the write operation in case the read already happens > to return the correct value. > > Signed-off-by: Crystal Guo > --- > drivers/reset/reset-ti-syscon.c | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > diff --git a/drivers/reset/reset-ti-syscon.c b/drivers/reset/reset-ti-syscon.c > index 1c74bcb9a6c3..f4baf78afd14 100644 > --- a/drivers/reset/reset-ti-syscon.c > +++ b/drivers/reset/reset-ti-syscon.c > @@ -57,6 +57,7 @@ struct ti_syscon_reset_data { > struct ti_syscon_reset_control *controls; > unsigned int nr_controls; > bool assert_deassert_together; > + bool update_force; > }; > > #define to_ti_syscon_reset_data(rcdev) \ > @@ -90,7 +91,10 @@ static int ti_syscon_reset_assert(struct reset_controller_dev *rcdev, > mask = BIT(control->assert_bit); > value = (control->flags & ASSERT_SET) ? mask : 0x0; > > - return regmap_update_bits(data->regmap, control->assert_offset, mask, value); > + if (data->update_force) > + return regmap_write_bits(data->regmap, control->assert_offset, mask, value); > + else > + return regmap_update_bits(data->regmap, control->assert_offset, mask, value); > } > > /** > @@ -121,7 +125,10 @@ static int ti_syscon_reset_deassert(struct reset_controller_dev *rcdev, > mask = BIT(control->deassert_bit); > value = (control->flags & DEASSERT_SET) ? mask : 0x0; > > - return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); > + if (data->update_force) > + return regmap_write_bits(data->regmap, control->deassert_offset, mask, value); > + else > + return regmap_update_bits(data->regmap, control->deassert_offset, mask, value); > } > > /** > @@ -223,6 +230,10 @@ static int ti_syscon_reset_probe(struct platform_device *pdev) > data->assert_deassert_together = true; > else > data->assert_deassert_together = false; > + if (of_property_read_bool(np, "update-force")) > + data->update_force = true; > + else > + data->update_force = false; > > data->rcdev.ops = &ti_syscon_reset_ops; > data->rcdev.owner = THIS_MODULE; This patch is good to help MediaTek drivers' transition to use ti-syscon-reset-controller, also not have side effect to existed users. Acked-by: Stanley Chu _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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 X-Spam-Level: X-Spam-Status: No, score=-11.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_SANE_2 autolearn=ham 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 C48B4C433E0 for ; Tue, 4 Aug 2020 04:21:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C02FB2070A for ; Tue, 4 Aug 2020 04:21:06 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Tue, 04 Aug 2020 12:15:48 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs02n2.mediatek.inc (172.21.101.101) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 4 Aug 2020 12:15:46 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 4 Aug 2020 12:15:46 +0800 Message-ID: <1596514546.32283.29.camel@mtkswgap22> Subject: Re: [v2,5/6] reset-controller: ti: Introduce force-update method From: Stanley Chu To: Crystal Guo CC: , , , , , , , , , , Date: Tue, 4 Aug 2020 12:15:46 +0800 In-Reply-To: <20200803061511.29555-6-crystal.guo@mediatek.com> References: <20200803061511.29555-1-crystal.guo@mediatek.com> <20200803061511.29555-6-crystal.guo@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-TM-SNTS-SMTP: F731C297E4C566B4F072E2A72C27549312D9B54D96BA0768F50EF657855B62E32000:8 X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org T24gTW9uLCAyMDIwLTA4LTAzIGF0IDE0OjE1ICswODAwLCBDcnlzdGFsIEd1byB3cm90ZToNCj4g SW50cm9kdWNlIGZvcmNlLXVwZGF0ZSBtZXRob2QgZm9yIGFzc2VydCBhbmQgZGVhc3NlcnQgaW50 ZXJmYWNlLA0KPiB3aGljaCBmb3JjZSB0aGUgd3JpdGUgb3BlcmF0aW9uIGluIGNhc2UgdGhlIHJl YWQgYWxyZWFkeSBoYXBwZW5zDQo+IHRvIHJldHVybiB0aGUgY29ycmVjdCB2YWx1ZS4NCj4gDQo+ IFNpZ25lZC1vZmYtYnk6IENyeXN0YWwgR3VvIDxjcnlzdGFsLmd1b0BtZWRpYXRlay5jb20+DQo+ IC0tLQ0KPiAgZHJpdmVycy9yZXNldC9yZXNldC10aS1zeXNjb24uYyB8IDE1ICsrKysrKysrKysr KystLQ0KPiAgMSBmaWxlIGNoYW5nZWQsIDEzIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0p DQo+IA0KPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9yZXNldC9yZXNldC10aS1zeXNjb24uYyBiL2Ry aXZlcnMvcmVzZXQvcmVzZXQtdGktc3lzY29uLmMNCj4gaW5kZXggMWM3NGJjYjlhNmMzLi5mNGJh Zjc4YWZkMTQgMTAwNjQ0DQo+IC0tLSBhL2RyaXZlcnMvcmVzZXQvcmVzZXQtdGktc3lzY29uLmMN Cj4gKysrIGIvZHJpdmVycy9yZXNldC9yZXNldC10aS1zeXNjb24uYw0KPiBAQCAtNTcsNiArNTcs NyBAQCBzdHJ1Y3QgdGlfc3lzY29uX3Jlc2V0X2RhdGEgew0KPiAgCXN0cnVjdCB0aV9zeXNjb25f cmVzZXRfY29udHJvbCAqY29udHJvbHM7DQo+ICAJdW5zaWduZWQgaW50IG5yX2NvbnRyb2xzOw0K PiAgCWJvb2wgYXNzZXJ0X2RlYXNzZXJ0X3RvZ2V0aGVyOw0KPiArCWJvb2wgdXBkYXRlX2ZvcmNl Ow0KPiAgfTsNCj4gIA0KPiAgI2RlZmluZSB0b190aV9zeXNjb25fcmVzZXRfZGF0YShyY2RldikJ XA0KPiBAQCAtOTAsNyArOTEsMTAgQEAgc3RhdGljIGludCB0aV9zeXNjb25fcmVzZXRfYXNzZXJ0 KHN0cnVjdCByZXNldF9jb250cm9sbGVyX2RldiAqcmNkZXYsDQo+ICAJbWFzayA9IEJJVChjb250 cm9sLT5hc3NlcnRfYml0KTsNCj4gIAl2YWx1ZSA9IChjb250cm9sLT5mbGFncyAmIEFTU0VSVF9T RVQpID8gbWFzayA6IDB4MDsNCj4gIA0KPiAtCXJldHVybiByZWdtYXBfdXBkYXRlX2JpdHMoZGF0 YS0+cmVnbWFwLCBjb250cm9sLT5hc3NlcnRfb2Zmc2V0LCBtYXNrLCB2YWx1ZSk7DQo+ICsJaWYg KGRhdGEtPnVwZGF0ZV9mb3JjZSkNCj4gKwkJcmV0dXJuIHJlZ21hcF93cml0ZV9iaXRzKGRhdGEt PnJlZ21hcCwgY29udHJvbC0+YXNzZXJ0X29mZnNldCwgbWFzaywgdmFsdWUpOw0KPiArCWVsc2UN Cj4gKwkJcmV0dXJuIHJlZ21hcF91cGRhdGVfYml0cyhkYXRhLT5yZWdtYXAsIGNvbnRyb2wtPmFz c2VydF9vZmZzZXQsIG1hc2ssIHZhbHVlKTsNCj4gIH0NCj4gIA0KPiAgLyoqDQo+IEBAIC0xMjEs NyArMTI1LDEwIEBAIHN0YXRpYyBpbnQgdGlfc3lzY29uX3Jlc2V0X2RlYXNzZXJ0KHN0cnVjdCBy ZXNldF9jb250cm9sbGVyX2RldiAqcmNkZXYsDQo+ICAJbWFzayA9IEJJVChjb250cm9sLT5kZWFz c2VydF9iaXQpOw0KPiAgCXZhbHVlID0gKGNvbnRyb2wtPmZsYWdzICYgREVBU1NFUlRfU0VUKSA/ IG1hc2sgOiAweDA7DQo+ICANCj4gLQlyZXR1cm4gcmVnbWFwX3VwZGF0ZV9iaXRzKGRhdGEtPnJl Z21hcCwgY29udHJvbC0+ZGVhc3NlcnRfb2Zmc2V0LCBtYXNrLCB2YWx1ZSk7DQo+ICsJaWYgKGRh dGEtPnVwZGF0ZV9mb3JjZSkNCj4gKwkJcmV0dXJuIHJlZ21hcF93cml0ZV9iaXRzKGRhdGEtPnJl Z21hcCwgY29udHJvbC0+ZGVhc3NlcnRfb2Zmc2V0LCBtYXNrLCB2YWx1ZSk7DQo+ICsJZWxzZQ0K PiArCQlyZXR1cm4gcmVnbWFwX3VwZGF0ZV9iaXRzKGRhdGEtPnJlZ21hcCwgY29udHJvbC0+ZGVh c3NlcnRfb2Zmc2V0LCBtYXNrLCB2YWx1ZSk7DQo+ICB9DQo+ICANCj4gIC8qKg0KPiBAQCAtMjIz LDYgKzIzMCwxMCBAQCBzdGF0aWMgaW50IHRpX3N5c2Nvbl9yZXNldF9wcm9iZShzdHJ1Y3QgcGxh dGZvcm1fZGV2aWNlICpwZGV2KQ0KPiAgCQlkYXRhLT5hc3NlcnRfZGVhc3NlcnRfdG9nZXRoZXIg PSB0cnVlOw0KPiAgCWVsc2UNCj4gIAkJZGF0YS0+YXNzZXJ0X2RlYXNzZXJ0X3RvZ2V0aGVyID0g ZmFsc2U7DQo+ICsJaWYgKG9mX3Byb3BlcnR5X3JlYWRfYm9vbChucCwgInVwZGF0ZS1mb3JjZSIp KQ0KPiArCQlkYXRhLT51cGRhdGVfZm9yY2UgPSB0cnVlOw0KPiArCWVsc2UNCj4gKwkJZGF0YS0+ dXBkYXRlX2ZvcmNlID0gZmFsc2U7DQo+ICANCj4gIAlkYXRhLT5yY2Rldi5vcHMgPSAmdGlfc3lz Y29uX3Jlc2V0X29wczsNCj4gIAlkYXRhLT5yY2Rldi5vd25lciA9IFRISVNfTU9EVUxFOw0KDQpU aGlzIHBhdGNoIGlzIGdvb2QgdG8gaGVscCBNZWRpYVRlayBkcml2ZXJzJyB0cmFuc2l0aW9uIHRv IHVzZQ0KdGktc3lzY29uLXJlc2V0LWNvbnRyb2xsZXIsIGFsc28gbm90IGhhdmUgc2lkZSBlZmZl Y3QgdG8gZXhpc3RlZCB1c2Vycy4NCg0KQWNrZWQtYnk6IFN0YW5sZXkgQ2h1IDxzdGFubGV5LmNo dUBtZWRpYXRlay5jb20+DQoNCg0K