From patchwork Mon Jul 31 17:06:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 708851 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 B824DC001E0 for ; Mon, 31 Jul 2023 17:11:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232840AbjGaRLf (ORCPT ); Mon, 31 Jul 2023 13:11:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233096AbjGaRLW (ORCPT ); Mon, 31 Jul 2023 13:11:22 -0400 Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AED8D35AD; Mon, 31 Jul 2023 10:07:45 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 46F38423EC; Mon, 31 Jul 2023 22:06:44 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1690823204; bh=SqI9LjfeszS9ddVacQJ7LtuNyQ3l163VDzjnQYL9Q40=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=g6zR/XVazhALC4nulmfaGhnwbyMy2/zChe8zRaYWc89r+NOxXf035dTWQ70FRfXSz 3JblA6EWnKn0qEo8xU+T9iWAo59mwW7GsGS/6gmeL992Rik1PbVPVqcPx9O6Zqsg2l jEIYj0LfPUPUAYJLi/ThJvikSmoo6ZHeEUJi6MIoAMXwMlUjg5v16GJrL2kxXXtt2a 6WVFg2puXisyARFeG/55gB13aGbK2BTa02bI99turBhjGqLATCKQQpHbnNQhyO4h3B VPKLykE2bvlx30H1HOO6alCuoLbrTBc2aEEQSI5yysUPcCFp1l9neOUuA6jYSzUi9R IEhWZjup1xpfA== From: Nikita Travkin Date: Mon, 31 Jul 2023 22:06:24 +0500 Subject: [PATCH v2 1/4] dt-bindings: power: supply: Add pm8916 VM-BMS MIME-Version: 1.0 Message-Id: <20230731-pm8916-bms-lbc-v2-1-82a4ebb39c16@trvn.ru> References: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> In-Reply-To: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=2880; i=nikita@trvn.ru; h=from:subject:message-id; bh=SqI9LjfeszS9ddVacQJ7LtuNyQ3l163VDzjnQYL9Q40=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBkx+oiPbrolN3UUSZJIri35XiJtmfD8tp8lTac2 X5NBdDqwEaJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZMfqIgAKCRBDHOzuKBm/ dU80D/4vI6j6cEVM8l7Fac5uOv6qkfOXFlQHhT/pjzxvHQblu80F0I1vrtb1xy5Yjr3WZZr+pFW 3vr69pO3Iipg3BQsufH8EtUkCsBInA+QGJhqB5ifb1+kFdg75KNye4AGUjD/3uN7fca/aBJGvVD Cfj1sWoEj3FOf8x4avsOMuSMZwfInZxKYb1tdfjZBYyz5R2kNxTq442Jo7l1vdiKBRU0hB286oe SKuNtXLOHRgExOkp6ESwh+Co+oaUcFGV+AVo46u97HcvJxz3A0lq/t+El9KeLYjm5GCpY+sEbL4 EWO+yB5z6fpT0k22I9HDaisT+4MJ1iuSJq7YI9Nv+eXXqZE1vzWUIPiXK6CZuu/bOcWh9xBF5dj oqW3uJMV4WPVjzpQgGWOJSZDqXYWrG+kUA1AUa4OcrpHFFfCeoXr32Udw4C2OPnZc2j6bbTen+E rZ3V13QPzqc8CjsqhtFeDnk7adzpuIMV3Rt6z2WHb6XArDCKLl59V6RIkh3/HVUW5+PFYP3lF+0 FUal/N+p1VJ8BTTmtyBvOYbjhI8LoH0R6vVE32g9aHZnCzh5lox1Q1Ksn/JSzQUiuyRuFRpFCCm qIscNERcs7fgcTEqeksDgSO+lsY/OTKW05/S7BquVyjWJw2H+ctVqizNE23p35m/JsoL/cPpPRG MHRFmMu7jSgR59g== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Qualcomm Voltage Mode BMS is a battery monitoring block in PM8916 PMIC. Document it's DT binding. Signed-off-by: Nikita Travkin Reviewed-by: Rob Herring --- v2: Describe all interrupts. (Conor) --- .../bindings/power/supply/qcom,pm8916-bms-vm.yaml | 83 ++++++++++++++++++++++ 1 file changed, 83 insertions(+) diff --git a/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml new file mode 100644 index 000000000000..ad764e69ab57 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-bms-vm.yaml @@ -0,0 +1,83 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/qcom,pm8916-bms-vm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Voltage Mode BMS + +maintainers: + - Nikita Travkin + +description: + Voltage Mode BMS is a hardware block found in some Qualcomm PMICs + such as pm8916. This block performs battery voltage monitoring. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + const: qcom,pm8916-bms-vm + + reg: + maxItems: 1 + + interrupts: + items: + - description: BMS FSM left S3 mode + - description: BMS FSM entered S2 mode + - description: OCV measured in S3 mode + - description: OCV below threshold + - description: FIFO update done + - description: BMS FSM switched state + + interrupt-names: + items: + - const: cv_leave + - const: cv_enter + - const: ocv_good + - const: ocv_thr + - const: fifo + - const: state_chg + + monitored-battery: true + + power-supplies: true + +required: + - compatible + - reg + - interrupts + - interrupt-names + - monitored-battery + +additionalProperties: false + +examples: + - | + #include + pmic { + #address-cells = <1>; + #size-cells = <0>; + + battery@4000 { + compatible = "qcom,pm8916-bms-vm"; + reg = <0x4000>; + interrupts = <0x0 0x40 0 IRQ_TYPE_EDGE_RISING>, + <0x0 0x40 1 IRQ_TYPE_EDGE_RISING>, + <0x0 0x40 2 IRQ_TYPE_EDGE_RISING>, + <0x0 0x40 3 IRQ_TYPE_EDGE_RISING>, + <0x0 0x40 4 IRQ_TYPE_EDGE_RISING>, + <0x0 0x40 5 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "cv_leave", + "cv_enter", + "ocv_good", + "ocv_thr", + "fifo", + "state_chg"; + + monitored-battery = <&battery>; + power-supplies = <&pm8916_charger>; + }; + }; From patchwork Mon Jul 31 17:06:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 708466 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 17E9FC001E0 for ; Mon, 31 Jul 2023 17:16:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231901AbjGaRQ3 (ORCPT ); Mon, 31 Jul 2023 13:16:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231977AbjGaRPd (ORCPT ); Mon, 31 Jul 2023 13:15:33 -0400 Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDAF43C06; Mon, 31 Jul 2023 10:13:17 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id BB66742448; Mon, 31 Jul 2023 22:06:44 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1690823205; bh=HLdHaCzNIuTqc3Vf74S9Nlpt5i1D7838FDtfMaKxzCI=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=PxiqGKe8XQyLiXt4t3zbAw2ROQgzDZXdx0Pvsvd3a8TNoVJtq0AJcYne8h4kSlE1K ye2H1rV+UmjebJtbWZF0BROdGGpB+8LnUXwRdX662gPZPf1KV+5OtJpDa5ypfnpsDo prFMmftTH5Ax1hQeeODAP4jlWX7h3cZqu3G7H/nXolL1Ifu9BIkQpbXkkEiQHL4wHF c3DzOAtExO+8L2o66kzybJmEYPuOBNPBVnOC6EtQ8iyypTMluwOkqFrr1+VWAnTcoI YKFU8TUkc755UrvkybA0GFPEWBs3+bhjhrdItChwINuT2YXeQWgqECLcYdl0/A/Vyn uQpeDnRNvS17w== From: Nikita Travkin Date: Mon, 31 Jul 2023 22:06:25 +0500 Subject: [PATCH v2 2/4] dt-bindings: power: supply: Add pm8916 LBC MIME-Version: 1.0 Message-Id: <20230731-pm8916-bms-lbc-v2-2-82a4ebb39c16@trvn.ru> References: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> In-Reply-To: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=4457; i=nikita@trvn.ru; h=from:subject:message-id; bh=HLdHaCzNIuTqc3Vf74S9Nlpt5i1D7838FDtfMaKxzCI=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBkx+oiPNHbV3Ry0e5+TA2hM+W09MNJ4w/zpmF8m ITChVEKV4iJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZMfqIgAKCRBDHOzuKBm/ dYXWD/9X0rvSde5YKjw7JouJWAQayzXhYs1gYGPo/qWBkHwAiC++dC7nEPMeN5YMRoeyWgpIhAF I0lndxy6V7vNmZHHyn6GxSUsUE6+LW6OcC+y94lUYPpG/h8HDc163JF/Pm2/GLmgXIJ0FsDNY2m hLn7PjpAmB1LDRNmWsZ/IgTVFpSs9ymZiU1CCRNq81UXVT781yYi0GOMo5UG36FjMJN1CJo/E7a eDzyIDZ9opmxO1k7y6bC9TpqBsJASSvlNhb7dY70FnWgTJkfnhNSDK4U8zkPjRGJ4uo37nIV5AF +X3HQhrnPhovnEXp+/1Kho4DxXRVfWxjubW1deidvqIvR9e8kwU4EUAaDN0iaICeIJ+ufjva0t7 SlKDUfg0LTRqYoPf3szE/Rmfc6oJFtEE+y3XQcznDdV5WHps8qDlWitfzRCp7yzuEvXvFHFwax5 KVQz6antCsDoEeIYNYTOOfUeq+q/wg0tGe1KAp6djM1Qem42UiD/9U7ZnZXOrqhlejg0WYes3Xu PY6T+4IgcJMO7K/ulKPX1oAth/s8r6pVYWixdhVDTdWglc9ECaV82S3vQszUZsGEOrTNUYkCB9G hkRgvV4gUaA4ZjhD3d+BEWlruID6GmlZ63gniBXdidBN420xu9zYTcF3DWlken4hfsmy0fmukrA gRyDexEkJSYCLWQ== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Qualcomm Linear Battery Charger is a CC/CV charger block in PM8916 PMIC. Document it's DT binding. Signed-off-by: Nikita Travkin Reviewed-by: Rob Herring --- v2: List all interrupts (Conor) --- .../bindings/power/supply/qcom,pm8916-lbc.yaml | 128 +++++++++++++++++++++ 1 file changed, 128 insertions(+) diff --git a/Documentation/devicetree/bindings/power/supply/qcom,pm8916-lbc.yaml b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-lbc.yaml new file mode 100644 index 000000000000..cdf14e5ed119 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/qcom,pm8916-lbc.yaml @@ -0,0 +1,128 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/qcom,pm8916-lbc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Linear Battery Charger + +maintainers: + - Nikita Travkin + +description: + Linear Battery Charger hardware block, found in some Qualcomm PMICs + such as pm8916. Implements a simple, autonomous CC/CV charger. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + const: qcom,pm8916-lbc + + reg: + items: + - description: Charger + - description: Battery + - description: USB + - description: MISC + + reg-names: + items: + - const: chgr + - const: bat_if + - const: usb + - const: misc + + interrupts: + items: + - description: Battery detection + - description: Fast charging + - description: Charging failed + - description: Charging done + - description: Battery present + - description: Battery temperature OK + - description: USB coarse detection + - description: USB IN valid + - description: Charger gone + - description: Overtemperature + + interrupt-names: + items: + - const: vbat_det + - const: fast_chg + - const: chg_fail + - const: chg_done + - const: bat_pres + - const: temp_ok + - const: coarse_det + - const: usb_vbus + - const: chg_gone + - const: overtemp + + qcom,fast-charge-safe-voltage: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 4000000 + maximum: 4775000 + description: + Maximum safe battery voltage in uV; May be pre-set by bootloader, + in which case, setting this will harmlessly fail. + + qcom,fast-charge-safe-current: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 90000 + maximum: 1440000 + description: + Maximum safe battery charge current in uA; May be pre-set by + bootloader, in which case setting this will harmlessly fail. + + monitored-battery: true + +required: + - compatible + - reg + - interrupts + - interrupt-names + - qcom,fast-charge-safe-voltage + - qcom,fast-charge-safe-current + +additionalProperties: false + +examples: + - | + #include + pmic { + #address-cells = <1>; + #size-cells = <0>; + + charger@1000 { + compatible = "qcom,pm8916-lbc"; + reg = <0x1000>, <0x1200>, <0x1300>, <0x1600>; + reg-names = "chgr", "bat_if", "usb", "misc"; + + interrupts = <0x0 0x10 0 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x10 5 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x10 6 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x10 7 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x12 0 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x12 1 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x13 0 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x13 1 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x13 2 IRQ_TYPE_EDGE_BOTH>, + <0x0 0x13 4 IRQ_TYPE_EDGE_BOTH>; + interrupt-names = "vbat_det", + "fast_chg", + "chg_fail", + "chg_done", + "bat_pres", + "temp_ok", + "coarse_det", + "usb_vbus", + "chg_gone", + "overtemp"; + monitored-battery = <&battery>; + + qcom,fast-charge-safe-current = <900000>; + qcom,fast-charge-safe-voltage = <4300000>; + }; + }; From patchwork Mon Jul 31 17:06:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 708850 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 09429C04E69 for ; Mon, 31 Jul 2023 17:11:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233185AbjGaRLg (ORCPT ); Mon, 31 Jul 2023 13:11:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232941AbjGaRLW (ORCPT ); Mon, 31 Jul 2023 13:11:22 -0400 Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AED2835A8; Mon, 31 Jul 2023 10:07:45 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 63BA242449; Mon, 31 Jul 2023 22:06:45 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1690823205; bh=dy9OhMPgkv6mGaKpif4r7aV9aD//zp0p5RkNyfGYR+A=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=oWj7Eyi/CEh6yi6Gmr6BQDs2NOs7EV3adkYoy4k/Il2oWQWDcs81Ifcrb3acRZDFa Ur9CIBRJ3foEU5q5uYmgkH9meAiJ9qhLXFTbus8qf/i+yOm88LUIxiC5TOm7j1rFPw ADcSlihPqXx8POzbRzgKmWSGYw/HmfNkemKRb6M9W4EKbeS1QT6+XAloJLIp+4lo4f 6B/KDc6dl3ORPpoOBdcYnm3d3b+MXvricsgD/b5M1bIU4XdSrv++aPorJSKb15ALmo wHYHwVEtX4zQo7t39sk2cIVxBzPu2gVsSfrceMlznlTiOFXkyTo33om0YCQFsysRhn euCokZA1WfRAA== From: Nikita Travkin Date: Mon, 31 Jul 2023 22:06:26 +0500 Subject: [PATCH v2 3/4] power: supply: Add pm8916 VM-BMS support MIME-Version: 1.0 Message-Id: <20230731-pm8916-bms-lbc-v2-3-82a4ebb39c16@trvn.ru> References: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> In-Reply-To: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=11200; i=nikita@trvn.ru; h=from:subject:message-id; bh=dy9OhMPgkv6mGaKpif4r7aV9aD//zp0p5RkNyfGYR+A=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBkx+oijQMpAqRsd5huFWQ1WCdzFVTIFnMUmFNr9 q/TYsyF2kaJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZMfqIgAKCRBDHOzuKBm/ dcfOD/0Twat822cuHAN8g+gWaVO4B9OzlmvPAi1qnrwoHYIoRS8xwsUn9x07rRm4mZt5ZOhaziF 9ehBhZp1xn9+58pbeN/PYB5nZmjrDkmejinGTv0aA1xJo3hhoadQKGB98iDHKS7cOpgmbH4XN8O cQrtiOqcEapfeHMTlfln8iO8dExONjCtmzWIAGPRF4uMkNPK7kizvJASxn8tlzcTD8PWIdxmega DfOASjDYt+maY4r7weTxiwOHGpT4KbU3FD0cqHcy5h3QxcECdmVpxvf2+YuoPKFZ4LPjsgRbauz nMEwHfXLf2f9jhOp+W+eU97n9ke+GuL92R/GtP5n9F/p4wOxpMKG4wLZpc7RK6XYm6UjnxSGgl0 m1bp6x3QTbpW1B/tC88W9haB+UI2hcEzoO6kGoX5GmRbF+HAfR66fiT451Uusa1BvM6ZVOxMJz2 9JlmKqH+ciJu5PgoYbjcw6uP5ZfcGI5SHPHo9WbXsaOtcXT4geZtP4oDhKg6xOlDekgUtHw3cwc FlDZV1RRoCHGTUjvBz3wiqhAmBBSp/vPXdwQWv/J4o+/XKhdvvwCk7lo72uf6tY2k6zQc9SXOmu LH9XS20S64akP9VwgMY9Yk5r9y8bURsWUA3DxK/C3dtwqRHChkNKl2jiaGFa6ga6U1WRErgiI5c MssAei7oBl4GvDw== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org This driver adds basic support for VM-BMS found in pm8916. VM-BMS is a very basic fuel-gauge hardware block that is, sadly, incapable of any gauging. The hardware supports measuring OCV in sleep mode, where the battery is not in use, or measuring average voltage over time when the device is active. This driver implements basic value readout from this block. Signed-off-by: Nikita Travkin --- v2: Get irq by name --- drivers/power/supply/Kconfig | 11 ++ drivers/power/supply/Makefile | 1 + drivers/power/supply/pm8916_bms_vm.c | 296 +++++++++++++++++++++++++++++++++++ 3 files changed, 308 insertions(+) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index 663a1c423806..e93a5a4d03e2 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -629,6 +629,17 @@ config CHARGER_QCOM_SMBB documentation for more detail. The base name for this driver is 'pm8941_charger'. +config BATTERY_PM8916_BMS_VM + tristate "Qualcomm PM8916 BMS-VM support" + depends on MFD_SPMI_PMIC || COMPILE_TEST + help + Say Y to add support for Voltage Mode BMS block found in some + Qualcomm PMICs such as PM8916. This hardware block provides + battery voltage monitoring for the system. + + To compile this driver as module, choose M here: the + module will be called pm8916_bms_vm. + config CHARGER_BQ2415X tristate "TI BQ2415x battery charger driver" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index a8a9fa6de1e9..fdf7916f80ed 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -84,6 +84,7 @@ obj-$(CONFIG_CHARGER_MP2629) += mp2629_charger.o obj-$(CONFIG_CHARGER_MT6360) += mt6360_charger.o obj-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o +obj-$(CONFIG_BATTERY_PM8916_BMS_VM) += pm8916_bms_vm.o obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o obj-$(CONFIG_CHARGER_BQ24257) += bq24257_charger.o diff --git a/drivers/power/supply/pm8916_bms_vm.c b/drivers/power/supply/pm8916_bms_vm.c new file mode 100644 index 000000000000..6cf00bf1c466 --- /dev/null +++ b/drivers/power/supply/pm8916_bms_vm.c @@ -0,0 +1,296 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, Nikita Travkin + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define PM8916_PERPH_TYPE 0x04 +#define PM8916_BMS_VM_TYPE 0x020D + +#define PM8916_SEC_ACCESS 0xD0 +#define PM8916_SEC_MAGIC 0xA5 + +#define PM8916_BMS_VM_STATUS1 0x08 +#define PM8916_BMS_VM_FSM_STATE(x) (((x) & 0b00111000) >> 3) +#define PM8916_BMS_VM_FSM_STATE_S2 0x2 + +#define PM8916_BMS_VM_MODE_CTL 0x40 +#define PM8916_BMS_VM_MODE_FORCE_S3 (BIT(0) | BIT(1)) +#define PM8916_BMS_VM_MODE_NORMAL (BIT(1) | BIT(3)) + +#define PM8916_BMS_VM_EN_CTL 0x46 +#define PM8916_BMS_ENABLED BIT(7) + +#define PM8916_BMS_VM_FIFO_LENGTH_CTL 0x47 +#define PM8916_BMS_VM_S1_SAMPLE_INTERVAL_CTL 0x55 +#define PM8916_BMS_VM_S2_SAMPLE_INTERVAL_CTL 0x56 +#define PM8916_BMS_VM_S3_S7_OCV_DATA0 0x6A +#define PM8916_BMS_VM_BMS_FIFO_REG_0_LSB 0xC0 + +/* Using only 1 fifo is broken in hardware */ +#define PM8916_BMS_VM_FIFO_COUNT 2 /* 2 .. 8 */ + +#define PM8916_BMS_VM_S1_SAMPLE_INTERVAL 10 +#define PM8916_BMS_VM_S2_SAMPLE_INTERVAL 10 + +struct pm8916_bms_vm_battery { + struct device *dev; + struct power_supply *battery; + struct power_supply_battery_info *info; + struct regmap *regmap; + unsigned int reg; + unsigned int last_ocv; + unsigned int vbat_now; +}; + +static int pm8916_bms_vm_battery_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct pm8916_bms_vm_battery *bat = power_supply_get_drvdata(psy); + struct power_supply_battery_info *info = bat->info; + int supplied; + + switch (psp) { + case POWER_SUPPLY_PROP_STATUS: + supplied = power_supply_am_i_supplied(psy); + + if (supplied < 0 && supplied != -ENODEV) + return supplied; + else if (supplied && supplied != -ENODEV) + val->intval = POWER_SUPPLY_STATUS_CHARGING; + else + val->intval = POWER_SUPPLY_STATUS_DISCHARGING; + return 0; + + case POWER_SUPPLY_PROP_HEALTH: + if (bat->vbat_now < info->voltage_min_design_uv) + val->intval = POWER_SUPPLY_HEALTH_DEAD; + else if (bat->vbat_now > info->voltage_max_design_uv) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else + val->intval = POWER_SUPPLY_HEALTH_GOOD; + return 0; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + val->intval = bat->vbat_now; + return 0; + + case POWER_SUPPLY_PROP_VOLTAGE_BOOT: + /* Returning last known ocv value here - it changes after suspend. */ + val->intval = bat->last_ocv; + return 0; + + default: + return -EINVAL; + } +} + +static enum power_supply_property pm8916_bms_vm_battery_properties[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_VOLTAGE_BOOT, + POWER_SUPPLY_PROP_HEALTH, +}; + +static irqreturn_t pm8916_bms_vm_fifo_update_done_irq(int irq, void *data) +{ + struct pm8916_bms_vm_battery *bat = data; + u16 vbat_data[PM8916_BMS_VM_FIFO_COUNT]; + int ret; + + ret = regmap_bulk_read(bat->regmap, bat->reg + PM8916_BMS_VM_BMS_FIFO_REG_0_LSB, + &vbat_data, PM8916_BMS_VM_FIFO_COUNT * 2); + if (ret) + return IRQ_HANDLED; + + /* + * The VM-BMS hardware only collects voltage data and the software + * has to process it to calculate the OCV and SoC. Hardware provides + * up to 8 averaged measurements for software to take in account. + * + * Just use the last measured value for now to report the current + * battery voltage. + */ + bat->vbat_now = vbat_data[PM8916_BMS_VM_FIFO_COUNT - 1] * 300; + + power_supply_changed(bat->battery); + + return IRQ_HANDLED; +} + +static const struct power_supply_desc pm8916_bms_vm_battery_psy_desc = { + .name = "pm8916-bms-vm", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = pm8916_bms_vm_battery_properties, + .num_properties = ARRAY_SIZE(pm8916_bms_vm_battery_properties), + .get_property = pm8916_bms_vm_battery_get_property, +}; + +static int pm8916_bms_vm_battery_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct pm8916_bms_vm_battery *bat; + struct power_supply_config psy_cfg = {}; + int ret, irq; + unsigned int tmp; + + bat = devm_kzalloc(dev, sizeof(*bat), GFP_KERNEL); + if (!bat) + return -ENOMEM; + + bat->dev = dev; + + bat->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!bat->regmap) + return -ENODEV; + + of_property_read_u32(dev->of_node, "reg", &bat->reg); + if (bat->reg < 0) + return -EINVAL; + + irq = platform_get_irq_byname(pdev, "fifo"); + if (irq < 0) + return irq; + + ret = devm_request_threaded_irq(dev, irq, NULL, pm8916_bms_vm_fifo_update_done_irq, + IRQF_ONESHOT, "pm8916_vm_bms", bat); + if (ret) + return ret; + + ret = regmap_bulk_read(bat->regmap, bat->reg + PM8916_PERPH_TYPE, &tmp, 2); + if (ret) + goto comm_error; + + if (tmp != PM8916_BMS_VM_TYPE) + return dev_err_probe(dev, -ENODEV, "Device reported wrong type: 0x%X\n", tmp); + + ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_S1_SAMPLE_INTERVAL_CTL, + PM8916_BMS_VM_S1_SAMPLE_INTERVAL); + if (ret) + goto comm_error; + ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_S2_SAMPLE_INTERVAL_CTL, + PM8916_BMS_VM_S2_SAMPLE_INTERVAL); + if (ret) + goto comm_error; + ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_FIFO_LENGTH_CTL, + PM8916_BMS_VM_FIFO_COUNT << 4 | PM8916_BMS_VM_FIFO_COUNT); + if (ret) + goto comm_error; + ret = regmap_write(bat->regmap, + bat->reg + PM8916_BMS_VM_EN_CTL, PM8916_BMS_ENABLED); + if (ret) + goto comm_error; + + ret = regmap_bulk_read(bat->regmap, + bat->reg + PM8916_BMS_VM_S3_S7_OCV_DATA0, &tmp, 2); + if (ret) + goto comm_error; + + bat->last_ocv = tmp * 300; + bat->vbat_now = bat->last_ocv; + + psy_cfg.drv_data = bat; + psy_cfg.of_node = dev->of_node; + + bat->battery = devm_power_supply_register(dev, &pm8916_bms_vm_battery_psy_desc, &psy_cfg); + if (IS_ERR(bat->battery)) + return dev_err_probe(dev, PTR_ERR(bat->battery), "Unable to register battery\n"); + + ret = power_supply_get_battery_info(bat->battery, &bat->info); + if (ret) + return dev_err_probe(dev, ret, "Unable to get battery info\n"); + + platform_set_drvdata(pdev, bat); + + return 0; + +comm_error: + return dev_err_probe(dev, ret, "Unable to communicate with device\n"); +} + +static int pm8916_bms_vm_battery_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct pm8916_bms_vm_battery *bat = platform_get_drvdata(pdev); + int ret; + + /* + * Due to a hardware quirk the FSM doesn't switch states normally. + * Instead we unlock the debug registers and force S3 (Measure OCV/Sleep) + * mode every time we suspend. + */ + + ret = regmap_write(bat->regmap, + bat->reg + PM8916_SEC_ACCESS, PM8916_SEC_MAGIC); + if (ret) + goto error; + ret = regmap_write(bat->regmap, + bat->reg + PM8916_BMS_VM_MODE_CTL, PM8916_BMS_VM_MODE_FORCE_S3); + if (ret) + goto error; + + return 0; + +error: + dev_err(bat->dev, "Failed to force S3 mode: %pe\n", ERR_PTR(ret)); + return ret; +} + +static int pm8916_bms_vm_battery_resume(struct platform_device *pdev) +{ + struct pm8916_bms_vm_battery *bat = platform_get_drvdata(pdev); + int ret; + unsigned int tmp; + + ret = regmap_bulk_read(bat->regmap, + bat->reg + PM8916_BMS_VM_S3_S7_OCV_DATA0, &tmp, 2); + + bat->last_ocv = tmp * 300; + + ret = regmap_write(bat->regmap, + bat->reg + PM8916_SEC_ACCESS, PM8916_SEC_MAGIC); + if (ret) + goto error; + ret = regmap_write(bat->regmap, + bat->reg + PM8916_BMS_VM_MODE_CTL, PM8916_BMS_VM_MODE_NORMAL); + if (ret) + goto error; + + return 0; + +error: + dev_err(bat->dev, "Failed to return normal mode: %pe\n", ERR_PTR(ret)); + return ret; +} + +static const struct of_device_id pm8916_bms_vm_battery_of_match[] = { + { .compatible = "qcom,pm8916-bms-vm", }, + { }, +}; +MODULE_DEVICE_TABLE(of, pm8916_bms_vm_battery_of_match); + +static struct platform_driver pm8916_bms_vm_battery_driver = { + .driver = { + .name = "pm8916-bms-vm", + .of_match_table = of_match_ptr(pm8916_bms_vm_battery_of_match), + }, + .probe = pm8916_bms_vm_battery_probe, + .suspend = pm8916_bms_vm_battery_suspend, + .resume = pm8916_bms_vm_battery_resume, +}; +module_platform_driver(pm8916_bms_vm_battery_driver); + +MODULE_DESCRIPTION("pm8916 BMS-VM driver"); +MODULE_AUTHOR("Nikita Travkin "); +MODULE_LICENSE("GPL"); From patchwork Mon Jul 31 17:06:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 708849 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 CD37AC001DE for ; Mon, 31 Jul 2023 17:16:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232932AbjGaRQa (ORCPT ); Mon, 31 Jul 2023 13:16:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232173AbjGaRPe (ORCPT ); Mon, 31 Jul 2023 13:15:34 -0400 Received: from box.trvn.ru (box.trvn.ru [194.87.146.52]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13C0F3C07; Mon, 31 Jul 2023 10:13:17 -0700 (PDT) Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id D73254244A; Mon, 31 Jul 2023 22:06:45 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1690823206; bh=XnE0sBmGyTeS42aQNFh0ggmPeJzYQmEk9QgohtuCRQY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=SovFyxs/p6Rl02tiHmcku3EajmXrDt2USXkn12ksatcXx7YKJUbO/wx0f4CIlmlPm Bp8XbRe8mPETCdY/GDMlVwOnDN/CLPkNGmFpYwLcsM0uVlHp0jbumPiT3twFXs1rwv j1esr/GRPWWCVC68sOgx7gFHo6H4Cs99MWz9argwhtRxXRXCyIaOyH94ZPCvvJFReU v1a1f8D/WAC9yItYq6IViqzoL/JTWGvR7xqASCTChPqMa3dv8GPzs20w/tgkAqoeB2 jh+27p0I/ZLQFCyyNZW/yqILmSGUDxMFxcxlGUxaRpMqM/ezrd/ntF3ym2r/E/3+2y 0COd3iQu55/3g== From: Nikita Travkin Date: Mon, 31 Jul 2023 22:06:27 +0500 Subject: [PATCH v2 4/4] power: supply: Add driver for pm8916 lbc MIME-Version: 1.0 Message-Id: <20230731-pm8916-bms-lbc-v2-4-82a4ebb39c16@trvn.ru> References: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> In-Reply-To: <20230731-pm8916-bms-lbc-v2-0-82a4ebb39c16@trvn.ru> To: Sebastian Reichel , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Nikita Travkin X-Developer-Signature: v=1; a=openpgp-sha256; l=13843; i=nikita@trvn.ru; h=from:subject:message-id; bh=XnE0sBmGyTeS42aQNFh0ggmPeJzYQmEk9QgohtuCRQY=; b=owEBbQKS/ZANAwAIAUMc7O4oGb91AcsmYgBkx+ojQWxmgpl5jl/vvGlQU8L64kJgMCrRAiXsh 43C7KLFHrCJAjMEAAEIAB0WIQTAhK9UUj+qg34uxUdDHOzuKBm/dQUCZMfqIwAKCRBDHOzuKBm/ dSo0D/4nNnEk4ZhGX9u2z5yUmhAEkNmqM+iI/sA8C7j3NUWGlqXM2HP6BAHj52DSdiuzpKyzuhp O+XNUKSUyQZAf1LaGw5yYvC2lKKhIEUqq+pmIxqcpGi/Gk4Vq5VWf3ppACDnDw6B7SLnCYcrjfK Frl12/u1vmLFz5a1FAwP2CiFhzKd3NqQFYjcNx6HvZOPLnhVAmyA/h6Kr0JrYwSVfFFaMUqhb9y rXk46xMuWhYBfcs7cxFqCama7EoVQQ3KxYRmhPGR4re5spOqODHTdCKiCWu8SRrPnN1jAxFmzFM RUUt37F+HrUzmBhAe7P4AvHQYhAG3cm42p3k+CTUf5TKGrK7pfEDQluiyxtisuoZFDRX+GQqjnZ n2LkXUJdIrLxX5zgTMWbgrR5KdJ1bCUtRRgmwDtj+Eu2K80/VagVDP8GSqo35OrLpzO8se0DoC7 llOPiW0EMxdzgUDvSZPH1FVFV5juhAJyBb8T8JHv5KHaeyZQmdCnoc7ZkcgWjKLpf8d0e3kI8Fg QQ+98oSiHg4glL96/iS2KWgVWd2vt8m3anguEhOgXIyXHbPwKBMpVP5iDnkSqTRRDOOrfR3zFts qJE4NKwqIMVF0sg9L3nnkOl6+4Qp1as933DDGr9+Bk54i66uV6OcjA7koQcvIKacwOaqNNydF6P PCLe7ZrnN5nhXsg== X-Developer-Key: i=nikita@trvn.ru; a=openpgp; fpr=C084AF54523FAA837E2EC547431CECEE2819BF75 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org pm8916 LBC is a Linear Battery Charger hardware block in pm8916 PMIC. This block implements simple CC/CV charging for Li-Po batteries. The hardware has internal state machine to switch between modes and works mostly autonomously, only needing the limits and targets to be set to operate. This driver allows setting limits and enabling the LBC block, monitoring it's state. Signed-off-by: Nikita Travkin --- v2: Fix missed warnings, get irq by name --- drivers/power/supply/Kconfig | 11 ++ drivers/power/supply/Makefile | 1 + drivers/power/supply/pm8916_lbc.c | 383 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 395 insertions(+) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index e93a5a4d03e2..a2ea249a57c6 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -640,6 +640,17 @@ config BATTERY_PM8916_BMS_VM To compile this driver as module, choose M here: the module will be called pm8916_bms_vm. +config CHARGER_PM8916_LBC + tristate "Qualcomm PM8916 Linear Battery Charger support" + depends on MFD_SPMI_PMIC || COMPILE_TEST + help + Say Y here to add support for Linear Battery Charger block + found in some Qualcomm PMICs such as PM8916. This hardware + blokc provides simple CC/CV battery charger. + + To compile this driver as module, choose M here: the + module will be called pm8916_lbc. + config CHARGER_BQ2415X tristate "TI BQ2415x battery charger driver" depends on I2C diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index fdf7916f80ed..e4bd9eb1261b 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_CHARGER_MT6360) += mt6360_charger.o obj-$(CONFIG_CHARGER_MT6370) += mt6370-charger.o obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o obj-$(CONFIG_BATTERY_PM8916_BMS_VM) += pm8916_bms_vm.o +obj-$(CONFIG_CHARGER_PM8916_LBC) += pm8916_lbc.o obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o obj-$(CONFIG_CHARGER_BQ24257) += bq24257_charger.o diff --git a/drivers/power/supply/pm8916_lbc.c b/drivers/power/supply/pm8916_lbc.c new file mode 100644 index 000000000000..490cb7064dbf --- /dev/null +++ b/drivers/power/supply/pm8916_lbc.c @@ -0,0 +1,383 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2023, Nikita Travkin + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Two bytes: type + subtype */ +#define PM8916_PERPH_TYPE 0x04 +#define PM8916_LBC_CHGR_TYPE 0x1502 +#define PM8916_LBC_BAT_IF_TYPE 0x1602 +#define PM8916_LBC_USB_TYPE 0x1702 +#define PM8916_LBC_MISC_TYPE 0x1802 + +#define PM8916_LBC_CHGR_CHG_OPTION 0x08 +#define PM8916_LBC_CHGR_PMIC_CHARGER BIT(7) + +#define PM8916_LBC_CHGR_CHG_STATUS 0x09 + +#define PM8916_INT_RT_STS 0x10 + +#define PM8916_LBC_USB_USBIN_VALID BIT(1) + +#define PM8916_LBC_CHGR_VDD_MAX 0x40 +#define PM8916_LBC_CHGR_VDD_SAFE 0x41 +#define PM8916_LBC_CHGR_IBAT_MAX 0x44 +#define PM8916_LBC_CHGR_IBAT_SAFE 0x45 + +#define PM8916_LBC_CHGR_TCHG_MAX_EN 0x60 +#define PM8916_LBC_CHGR_TCHG_MAX_ENABLED BIT(7) +#define PM8916_LBC_CHGR_TCHG_MAX 0x61 + +#define PM8916_LBC_CHGR_CHG_CTRL 0x49 +#define PM8916_LBC_CHGR_CHG_EN BIT(7) +#define PM8916_LBC_CHGR_PSTG_EN BIT(5) + +#define PM8916_LBC_CHGR_MIN_CURRENT 90000 +#define PM8916_LBC_CHGR_MAX_CURRENT 1440000 + +#define PM8916_LBC_CHGR_MIN_VOLTAGE 4000000 +#define PM8916_LBC_CHGR_MAX_VOLTAGE 4775000 +#define PM8916_LBC_CHGR_VOLTAGE_STEP 25000 + +#define PM8916_LBC_CHGR_MIN_TIME 4 +#define PM8916_LBC_CHGR_MAX_TIME 256 + +struct pm8916_lbc_charger { + struct device *dev; + struct extcon_dev *edev; + struct power_supply *charger; + struct power_supply_battery_info *info; + struct regmap *regmap; + unsigned int reg[4]; + bool online; + unsigned int charge_voltage_max; + unsigned int charge_voltage_safe; + unsigned int charge_current_max; + unsigned int charge_current_safe; +}; + +static const unsigned int pm8916_lbc_charger_cable[] = { + EXTCON_USB, + EXTCON_NONE, +}; + +enum { + LBC_CHGR = 0, + LBC_BAT_IF, + LBC_USB, + LBC_MISC, +}; + +static int pm8916_lbc_charger_configure(struct pm8916_lbc_charger *chg) +{ + int ret = 0; + unsigned int tmp; + + chg->charge_voltage_max = clamp_t(u32, chg->charge_voltage_max, + PM8916_LBC_CHGR_MIN_VOLTAGE, chg->charge_voltage_safe); + + tmp = chg->charge_voltage_max - PM8916_LBC_CHGR_MIN_VOLTAGE; + tmp /= PM8916_LBC_CHGR_VOLTAGE_STEP; + chg->charge_voltage_max = PM8916_LBC_CHGR_MIN_VOLTAGE + tmp * PM8916_LBC_CHGR_VOLTAGE_STEP; + + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_VDD_MAX, tmp); + if (ret) + goto error; + + chg->charge_current_max = min(chg->charge_current_max, chg->charge_current_safe); + + tmp = clamp_t(u32, chg->charge_current_max, + PM8916_LBC_CHGR_MIN_CURRENT, PM8916_LBC_CHGR_MAX_CURRENT); + + tmp = chg->charge_current_max / PM8916_LBC_CHGR_MIN_CURRENT - 1; + chg->charge_current_max = (tmp + 1) * PM8916_LBC_CHGR_MIN_CURRENT; + + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_IBAT_MAX, tmp); + if (ret) + goto error; + + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_CHG_CTRL, + PM8916_LBC_CHGR_CHG_EN | PM8916_LBC_CHGR_PSTG_EN); + if (ret) + goto error; + + return ret; + +error: + dev_err(chg->dev, "Failed to configure charging: %pe\n", ERR_PTR(ret)); + return ret; +} + +static int pm8916_lbc_charger_get_property(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct pm8916_lbc_charger *chg = power_supply_get_drvdata(psy); + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + val->intval = chg->online; + return 0; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = chg->charge_voltage_max; + return 0; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + val->intval = chg->charge_current_max; + return 0; + + default: + return -EINVAL; + }; +} + +static int pm8916_lbc_charger_set_property(struct power_supply *psy, + enum power_supply_property prop, + const union power_supply_propval *val) +{ + struct pm8916_lbc_charger *chg = power_supply_get_drvdata(psy); + + switch (prop) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + chg->charge_current_max = val->intval; + return pm8916_lbc_charger_configure(chg); + default: + return -EINVAL; + } +} + +static int pm8916_lbc_charger_property_is_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + return true; + default: + return false; + } +} + +static enum power_supply_property pm8916_lbc_charger_properties[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, +}; + +static irqreturn_t pm8916_lbc_charger_state_changed_irq(int irq, void *data) +{ + struct pm8916_lbc_charger *chg = data; + unsigned int tmp; + int ret; + + ret = regmap_read(chg->regmap, chg->reg[LBC_USB] + PM8916_INT_RT_STS, &tmp); + if (ret) + return IRQ_HANDLED; + + chg->online = !!(tmp & PM8916_LBC_USB_USBIN_VALID); + extcon_set_state_sync(chg->edev, EXTCON_USB, chg->online); + + power_supply_changed(chg->charger); + + return IRQ_HANDLED; +} + +static int pm8916_lbc_charger_probe_dt(struct pm8916_lbc_charger *chg) +{ + struct device *dev = chg->dev; + struct device_node *np = dev->of_node; + int ret = 0; + unsigned int tmp; + + ret = of_property_read_u32(np, "qcom,fast-charge-safe-voltage", &chg->charge_voltage_safe); + if (ret) + return ret; + if (chg->charge_voltage_safe < PM8916_LBC_CHGR_MIN_VOLTAGE) + return -EINVAL; + + chg->charge_voltage_safe = clamp_t(u32, chg->charge_voltage_safe, + PM8916_LBC_CHGR_MIN_VOLTAGE, PM8916_LBC_CHGR_MAX_VOLTAGE); + + tmp = chg->charge_voltage_safe - PM8916_LBC_CHGR_MIN_VOLTAGE; + tmp /= PM8916_LBC_CHGR_VOLTAGE_STEP; + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_VDD_SAFE, tmp); + if (ret) + return ret; + + ret = of_property_read_u32(np, "qcom,fast-charge-safe-current", &chg->charge_current_safe); + if (ret) + return ret; + if (chg->charge_current_safe < PM8916_LBC_CHGR_MIN_CURRENT) + return -EINVAL; + + chg->charge_current_safe = clamp_t(u32, chg->charge_current_safe, + PM8916_LBC_CHGR_MIN_CURRENT, PM8916_LBC_CHGR_MAX_CURRENT); + + chg->charge_current_max = chg->charge_current_safe; + + tmp = chg->charge_current_safe / PM8916_LBC_CHGR_MIN_CURRENT - 1; + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_IBAT_SAFE, tmp); + if (ret) + return ret; + + /* Disable charger timeout. */ + ret = regmap_write(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_TCHG_MAX_EN, 0x00); + if (ret) + return ret; + + return ret; +} + +static const struct power_supply_desc pm8916_lbc_charger_psy_desc = { + .name = "pm8916-lbc-chgr", + .type = POWER_SUPPLY_TYPE_USB, + .properties = pm8916_lbc_charger_properties, + .num_properties = ARRAY_SIZE(pm8916_lbc_charger_properties), + .get_property = pm8916_lbc_charger_get_property, + .set_property = pm8916_lbc_charger_set_property, + .property_is_writeable = pm8916_lbc_charger_property_is_writeable, +}; + +static int pm8916_lbc_charger_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct pm8916_lbc_charger *chg; + struct power_supply_config psy_cfg = {}; + int ret, len, irq; + unsigned int tmp; + + chg = devm_kzalloc(dev, sizeof(*chg), GFP_KERNEL); + if (!chg) + return -ENOMEM; + + chg->dev = dev; + + chg->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!chg->regmap) + return -ENODEV; + + len = of_property_count_u32_elems(dev->of_node, "reg"); + if (len < 0) + return len; + if (len != 4) + return dev_err_probe(dev, -EINVAL, + "Wrong amount of reg values: %d (4 expected)\n", len); + + irq = platform_get_irq_byname(pdev, "usb_vbus"); + if (irq < 0) + return irq; + + ret = devm_request_threaded_irq(dev, irq, NULL, pm8916_lbc_charger_state_changed_irq, + IRQF_ONESHOT, "pm8916_lbc", chg); + if (ret) + return ret; + + ret = of_property_read_u32_array(dev->of_node, "reg", chg->reg, len); + if (ret) + return ret; + + ret = regmap_bulk_read(chg->regmap, chg->reg[LBC_CHGR] + PM8916_PERPH_TYPE, &tmp, 2); + if (ret) + goto comm_error; + if (tmp != PM8916_LBC_CHGR_TYPE) + goto type_error; + + ret = regmap_bulk_read(chg->regmap, chg->reg[LBC_BAT_IF] + PM8916_PERPH_TYPE, &tmp, 2); + if (ret) + goto comm_error; + if (tmp != PM8916_LBC_BAT_IF_TYPE) + goto type_error; + + ret = regmap_bulk_read(chg->regmap, chg->reg[LBC_USB] + PM8916_PERPH_TYPE, &tmp, 2); + if (ret) + goto comm_error; + if (tmp != PM8916_LBC_USB_TYPE) + goto type_error; + + ret = regmap_bulk_read(chg->regmap, chg->reg[LBC_MISC] + PM8916_PERPH_TYPE, &tmp, 2); + if (ret) + goto comm_error; + if (tmp != PM8916_LBC_MISC_TYPE) + goto type_error; + + ret = regmap_read(chg->regmap, chg->reg[LBC_CHGR] + PM8916_LBC_CHGR_CHG_OPTION, &tmp); + if (ret) + goto comm_error; + if (tmp != PM8916_LBC_CHGR_PMIC_CHARGER) + dev_err_probe(dev, -ENODEV, "The system is using an external charger\n"); + + ret = pm8916_lbc_charger_probe_dt(chg); + if (ret) + dev_err_probe(dev, ret, "Error while parsing device tree\n"); + + psy_cfg.drv_data = chg; + psy_cfg.of_node = dev->of_node; + + chg->charger = devm_power_supply_register(dev, &pm8916_lbc_charger_psy_desc, &psy_cfg); + if (IS_ERR(chg->charger)) + return dev_err_probe(dev, PTR_ERR(chg->charger), "Unable to register charger\n"); + + ret = power_supply_get_battery_info(chg->charger, &chg->info); + if (ret) + return dev_err_probe(dev, ret, "Unable to get battery info\n"); + + chg->edev = devm_extcon_dev_allocate(dev, pm8916_lbc_charger_cable); + if (IS_ERR(chg->edev)) + return PTR_ERR(chg->edev); + + ret = devm_extcon_dev_register(dev, chg->edev); + if (ret < 0) + return dev_err_probe(dev, ret, "failed to register extcon device\n"); + + ret = regmap_read(chg->regmap, chg->reg[LBC_USB] + PM8916_INT_RT_STS, &tmp); + if (ret) + goto comm_error; + + chg->online = !!(tmp & PM8916_LBC_USB_USBIN_VALID); + extcon_set_state_sync(chg->edev, EXTCON_USB, chg->online); + + chg->charge_voltage_max = chg->info->voltage_max_design_uv; + ret = pm8916_lbc_charger_configure(chg); + if (ret) + return ret; + + return 0; + +comm_error: + return dev_err_probe(dev, ret, "Unable to communicate with device\n"); + +type_error: + return dev_err_probe(dev, -ENODEV, "Device reported wrong type: 0x%X\n", tmp); +} + +static const struct of_device_id pm8916_lbc_charger_of_match[] = { + { .compatible = "qcom,pm8916-lbc", }, + { }, +}; +MODULE_DEVICE_TABLE(of, pm8916_lbc_charger_of_match); + +static struct platform_driver pm8916_lbc_charger_driver = { + .driver = { + .name = "pm8916-lbc", + .of_match_table = of_match_ptr(pm8916_lbc_charger_of_match), + }, + .probe = pm8916_lbc_charger_probe, +}; +module_platform_driver(pm8916_lbc_charger_driver); + +MODULE_DESCRIPTION("pm8916 LBC driver"); +MODULE_AUTHOR("Nikita Travkin "); +MODULE_LICENSE("GPL");