From patchwork Wed Dec 23 02:44:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11987559 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=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT 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 C1417C433DB for ; Wed, 23 Dec 2020 02:56:05 +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 8B7C5205CA for ; 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Tue, 22 Dec 2020 18:54:37 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Dec 2020 18:44:35 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 23 Dec 2020 10:44:29 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 23 Dec 2020 10:44:34 +0800 From: Hsin-Hsiung Wang To: Stephen Boyd , Rob Herring , Matthias Brugger , Geert Uytterhoeven , Mauro Carvalho Chehab , Ulf Hansson , Mark Brown Subject: [PATCH v5 1/4] dt-bindings: spmi: modify the constraint 'maxItems' to 'minItems' Date: Wed, 23 Dec 2020 10:44:26 +0800 Message-ID: <1608691469-20919-2-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201222_215442_061400_927C0F5A X-CRM114-Status: GOOD ( 13.79 ) 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: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The constraint of 'maxItem: 1' might be larger than 1, so we modify it to 'minItem: 0'. Signed-off-by: Hsin-Hsiung Wang --- Documentation/devicetree/bindings/spmi/spmi.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/spmi/spmi.yaml b/Documentation/devicetree/bindings/spmi/spmi.yaml index 173940930719..f1a26391ffde 100644 --- a/Documentation/devicetree/bindings/spmi/spmi.yaml +++ b/Documentation/devicetree/bindings/spmi/spmi.yaml @@ -25,7 +25,7 @@ properties: pattern: "^spmi@.*" reg: - maxItems: 1 + minItems: 0 "#address-cells": const: 2 From patchwork Wed Dec 23 02:44:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11987535 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=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT 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 74C5BC433DB for ; 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Wed, 23 Dec 2020 10:44:34 +0800 From: Hsin-Hsiung Wang To: Stephen Boyd , Rob Herring , Matthias Brugger , Geert Uytterhoeven , Mauro Carvalho Chehab , Ulf Hansson , Mark Brown Subject: [PATCH v5 2/4] dt-bindings: spmi: document binding for the Mediatek SPMI controller Date: Wed, 23 Dec 2020 10:44:27 +0800 Message-ID: <1608691469-20919-3-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201222_214445_306109_EAD990BC X-CRM114-Status: GOOD ( 15.48 ) 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: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This adds documentation for the SPMI controller found on Mediatek SoCs. Signed-off-by: Hsin-Hsiung Wang Reviewed-by: Rob Herring --- .../bindings/spmi/mtk,spmi-mtk-pmif.yaml | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml diff --git a/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml new file mode 100644 index 000000000000..a43b0302d503 --- /dev/null +++ b/Documentation/devicetree/bindings/spmi/mtk,spmi-mtk-pmif.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spmi/mtk,spmi-mtk-pmif.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek SPMI Controller Device Tree Bindings + +maintainers: + - Hsin-Hsiung Wang + +description: |+ + On MediaTek SoCs the PMIC is connected via SPMI and the controller allows + for multiple SoCs to control a single SPMI master. + +allOf: + - $ref: "spmi.yaml" + +properties: + compatible: + const: mediatek,mt6873-spmi + + reg: + maxItems: 2 + + reg-names: + items: + - const: pmif + - const: spmimst + + clocks: + minItems: 3 + maxItems: 3 + + clock-names: + items: + - const: pmif_sys_ck + - const: pmif_tmr_ck + - const: spmimst_clk_mux + + assigned-clocks: + maxItems: 1 + + assigned-clock-parents: + maxItems: 1 + +required: + - compatible + - reg + - reg-names + - clocks + - clock-names + +unevaluatedProperties: false + +examples: + - | + #include + + spmi: spmi@10027000 { + compatible = "mediatek,mt6873-spmi"; + reg = <0 0x10027000 0 0x000e00>, + <0 0x10029000 0 0x000100>; + reg-names = "pmif", "spmimst"; + clocks = <&infracfg CLK_INFRA_PMIC_AP>, + <&infracfg CLK_INFRA_PMIC_TMR>, + <&topckgen CLK_TOP_SPMI_MST_SEL>; + clock-names = "pmif_sys_ck", + "pmif_tmr_ck", + "spmimst_clk_mux"; + assigned-clocks = <&topckgen CLK_TOP_PWRAP_ULPOSC_SEL>; + assigned-clock-parents = <&topckgen CLK_TOP_OSC_D10>; + }; +... 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Tue, 22 Dec 2020 18:44:37 -0800 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Dec 2020 18:44:35 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 23 Dec 2020 10:44:30 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 23 Dec 2020 10:44:34 +0800 From: Hsin-Hsiung Wang To: Stephen Boyd , Rob Herring , Matthias Brugger , Geert Uytterhoeven , Mauro Carvalho Chehab , Ulf Hansson , Mark Brown Subject: [PATCH v5 3/4] spmi: mediatek: Add support for MT6873/8192 Date: Wed, 23 Dec 2020 10:44:28 +0800 Message-ID: <1608691469-20919-4-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201222_214447_041288_FAC36C4A X-CRM114-Status: GOOD ( 25.24 ) 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: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add spmi support for MT6873/8192. Signed-off-by: Hsin-Hsiung Wang --- drivers/spmi/Kconfig | 9 + drivers/spmi/Makefile | 1 + drivers/spmi/spmi-mtk-pmif.c | 504 +++++++++++++++++++++++++++++++++++ 3 files changed, 514 insertions(+) create mode 100644 drivers/spmi/spmi-mtk-pmif.c diff --git a/drivers/spmi/Kconfig b/drivers/spmi/Kconfig index a53bad541f1a..418848840999 100644 --- a/drivers/spmi/Kconfig +++ b/drivers/spmi/Kconfig @@ -25,4 +25,13 @@ config SPMI_MSM_PMIC_ARB This is required for communicating with Qualcomm PMICs and other devices that have the SPMI interface. +config SPMI_MTK_PMIF + tristate "Mediatek SPMI Controller (PMIC Arbiter)" + help + If you say yes to this option, support will be included for the + built-in SPMI PMIC Arbiter interface on Mediatek family + processors. + + This is required for communicating with Mediatek PMICs and + other devices that have the SPMI interface. endif diff --git a/drivers/spmi/Makefile b/drivers/spmi/Makefile index 55a94cadeffe..91f303b96925 100644 --- a/drivers/spmi/Makefile +++ b/drivers/spmi/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_SPMI) += spmi.o obj-$(CONFIG_SPMI_MSM_PMIC_ARB) += spmi-pmic-arb.o +obj-$(CONFIG_SPMI_MTK_PMIF) += spmi-mtk-pmif.o \ No newline at end of file diff --git a/drivers/spmi/spmi-mtk-pmif.c b/drivers/spmi/spmi-mtk-pmif.c new file mode 100644 index 000000000000..711d3973800b --- /dev/null +++ b/drivers/spmi/spmi-mtk-pmif.c @@ -0,0 +1,504 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 MediaTek Inc. + +#include +#include +#include +#include +#include + +#define SWINF_IDLE 0x00 +#define SWINF_WFVLDCLR 0x06 + +#define GET_SWINF(x) (((x) >> 1) & 0x7) + +#define PMIF_CMD_REG_0 0 +#define PMIF_CMD_REG 1 +#define PMIF_CMD_EXT_REG 2 +#define PMIF_CMD_EXT_REG_LONG 3 + +#define PMIF_DELAY_US 10 +#define PMIF_TIMEOUT (10 * 1000) + +#define PMIF_CHAN_OFFSET 0x5 + +#define SPMI_OP_ST_BUSY 1 + +struct ch_reg { + u32 ch_sta; + u32 wdata; + u32 rdata; + u32 ch_send; + u32 ch_rdy; +}; + +struct pmif { + void __iomem *base; + const u32 *regs; + void __iomem *spmimst_base; + const u32 *spmimst_regs; + u32 soc_chan; + int grpid; + raw_spinlock_t lock; + struct clk *pmif_sys_ck; + struct clk *pmif_tmr_ck; + struct clk *spmimst_clk_mux; + struct ch_reg chan; +}; + +enum pmif_regs { + PMIF_INIT_DONE, + PMIF_INF_EN, + PMIF_ARB_EN, + PMIF_CMDISSUE_EN, + PMIF_TIMER_CTRL, + PMIF_SPI_MODE_CTRL, + PMIF_IRQ_EVENT_EN_0, + PMIF_IRQ_FLAG_0, + PMIF_IRQ_CLR_0, + PMIF_IRQ_EVENT_EN_1, + PMIF_IRQ_FLAG_1, + PMIF_IRQ_CLR_1, + PMIF_IRQ_EVENT_EN_2, + PMIF_IRQ_FLAG_2, + PMIF_IRQ_CLR_2, + PMIF_IRQ_EVENT_EN_3, + PMIF_IRQ_FLAG_3, + PMIF_IRQ_CLR_3, + PMIF_IRQ_EVENT_EN_4, + PMIF_IRQ_FLAG_4, + PMIF_IRQ_CLR_4, + PMIF_WDT_EVENT_EN_0, + PMIF_WDT_FLAG_0, + PMIF_WDT_EVENT_EN_1, + PMIF_WDT_FLAG_1, + PMIF_SWINF_0_STA, + PMIF_SWINF_0_WDATA_31_0, + PMIF_SWINF_0_RDATA_31_0, + PMIF_SWINF_0_ACC, + PMIF_SWINF_0_VLD_CLR, + PMIF_SWINF_1_STA, + PMIF_SWINF_1_WDATA_31_0, + PMIF_SWINF_1_RDATA_31_0, + PMIF_SWINF_1_ACC, + PMIF_SWINF_1_VLD_CLR, + PMIF_SWINF_2_STA, + PMIF_SWINF_2_WDATA_31_0, + PMIF_SWINF_2_RDATA_31_0, + PMIF_SWINF_2_ACC, + PMIF_SWINF_2_VLD_CLR, + PMIF_SWINF_3_STA, + PMIF_SWINF_3_WDATA_31_0, + PMIF_SWINF_3_RDATA_31_0, + PMIF_SWINF_3_ACC, + PMIF_SWINF_3_VLD_CLR, +}; + +static const u32 mt6873_regs[] = { + [PMIF_INIT_DONE] = 0x0000, + [PMIF_INF_EN] = 0x0024, + [PMIF_ARB_EN] = 0x0150, + [PMIF_CMDISSUE_EN] = 0x03B4, + [PMIF_TIMER_CTRL] = 0x03E0, + [PMIF_SPI_MODE_CTRL] = 0x0400, + [PMIF_IRQ_EVENT_EN_0] = 0x0418, + [PMIF_IRQ_FLAG_0] = 0x0420, + [PMIF_IRQ_CLR_0] = 0x0424, + [PMIF_IRQ_EVENT_EN_1] = 0x0428, + [PMIF_IRQ_FLAG_1] = 0x0430, + [PMIF_IRQ_CLR_1] = 0x0434, + [PMIF_IRQ_EVENT_EN_2] = 0x0438, + [PMIF_IRQ_FLAG_2] = 0x0440, + [PMIF_IRQ_CLR_2] = 0x0444, + [PMIF_IRQ_EVENT_EN_3] = 0x0448, + [PMIF_IRQ_FLAG_3] = 0x0450, + [PMIF_IRQ_CLR_3] = 0x0454, + [PMIF_IRQ_EVENT_EN_4] = 0x0458, + [PMIF_IRQ_FLAG_4] = 0x0460, + [PMIF_IRQ_CLR_4] = 0x0464, + [PMIF_WDT_EVENT_EN_0] = 0x046C, + [PMIF_WDT_FLAG_0] = 0x0470, + [PMIF_WDT_EVENT_EN_1] = 0x0474, + [PMIF_WDT_FLAG_1] = 0x0478, + [PMIF_SWINF_0_ACC] = 0x0C00, + [PMIF_SWINF_0_WDATA_31_0] = 0x0C04, + [PMIF_SWINF_0_RDATA_31_0] = 0x0C14, + [PMIF_SWINF_0_VLD_CLR] = 0x0C24, + [PMIF_SWINF_0_STA] = 0x0C28, + [PMIF_SWINF_1_ACC] = 0x0C40, + [PMIF_SWINF_1_WDATA_31_0] = 0x0C44, + [PMIF_SWINF_1_RDATA_31_0] = 0x0C54, + [PMIF_SWINF_1_VLD_CLR] = 0x0C64, + [PMIF_SWINF_1_STA] = 0x0C68, + [PMIF_SWINF_2_ACC] = 0x0C80, + [PMIF_SWINF_2_WDATA_31_0] = 0x0C84, + [PMIF_SWINF_2_RDATA_31_0] = 0x0C94, + [PMIF_SWINF_2_VLD_CLR] = 0x0CA4, + [PMIF_SWINF_2_STA] = 0x0CA8, + [PMIF_SWINF_3_ACC] = 0x0CC0, + [PMIF_SWINF_3_WDATA_31_0] = 0x0CC4, + [PMIF_SWINF_3_RDATA_31_0] = 0x0CD4, + [PMIF_SWINF_3_VLD_CLR] = 0x0CE4, + [PMIF_SWINF_3_STA] = 0x0CE8, +}; + +enum spmi_regs { + SPMI_OP_ST_CTRL, + SPMI_GRP_ID_EN, + SPMI_OP_ST_STA, + SPMI_MST_SAMPL, + SPMI_MST_REQ_EN, + SPMI_REC_CTRL, + SPMI_REC0, + SPMI_REC1, + SPMI_REC2, + SPMI_REC3, + SPMI_REC4, + SPMI_MST_DBG, +}; + +static const u32 mt6873_spmi_regs[] = { + [SPMI_OP_ST_CTRL] = 0x0000, + [SPMI_GRP_ID_EN] = 0x0004, + [SPMI_OP_ST_STA] = 0x0008, + [SPMI_MST_SAMPL] = 0x000c, + [SPMI_MST_REQ_EN] = 0x0010, + [SPMI_REC_CTRL] = 0x0040, + [SPMI_REC0] = 0x0044, + [SPMI_REC1] = 0x0048, + [SPMI_REC2] = 0x004c, + [SPMI_REC3] = 0x0050, + [SPMI_REC4] = 0x0054, + [SPMI_MST_DBG] = 0x00fc, +}; + +static u32 pmif_readl(struct pmif *arb, enum pmif_regs reg) +{ + return readl(arb->base + arb->regs[reg]); +} + +static void pmif_writel(struct pmif *arb, u32 val, enum pmif_regs reg) +{ + writel(val, arb->base + arb->regs[reg]); +} + +static void mtk_spmi_writel(struct pmif *arb, u32 val, enum spmi_regs reg) +{ + writel(val, arb->spmimst_base + arb->spmimst_regs[reg]); +} + +static bool pmif_is_fsm_vldclr(struct pmif *arb) +{ + u32 reg_rdata; + + reg_rdata = pmif_readl(arb, arb->chan.ch_sta); + return GET_SWINF(reg_rdata) == SWINF_WFVLDCLR; +} + +static int pmif_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid) +{ + struct pmif *arb = spmi_controller_get_drvdata(ctrl); + u32 rdata, cmd; + int ret; + + /* Check the opcode */ + if (opc == SPMI_CMD_RESET) + cmd = 0; + else if (opc == SPMI_CMD_SLEEP) + cmd = 1; + else if (opc == SPMI_CMD_SHUTDOWN) + cmd = 2; + else if (opc == SPMI_CMD_WAKEUP) + cmd = 3; + else + return -EINVAL; + + mtk_spmi_writel(arb, (cmd << 0x4) | sid, SPMI_OP_ST_CTRL); + ret = readl_poll_timeout_atomic(arb->spmimst_base + arb->spmimst_regs[SPMI_OP_ST_STA], + rdata, (rdata & SPMI_OP_ST_BUSY) == SPMI_OP_ST_BUSY, + PMIF_DELAY_US, PMIF_TIMEOUT); + if (ret < 0) + dev_err(&ctrl->dev, "timeout, err = %d\n", ret); + + return ret; +} + +static int pmif_spmi_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, + u16 addr, u8 *buf, size_t len) +{ + struct pmif *arb = spmi_controller_get_drvdata(ctrl); + struct ch_reg *inf_reg; + int ret; + u32 data, cmd, bc = len - 1; + unsigned long flags; + + /* Check for argument validation. */ + if (sid & ~(0xf)) { + dev_err(&ctrl->dev, "exceed the max slv id\n"); + return -EINVAL; + } + + if (!arb) { + dev_err(&ctrl->dev, "Cannot get pmif control to send cmd\n"); + return -EINVAL; + } + + inf_reg = &arb->chan; + + if (opc >= 0x60 && opc <= 0x7f) + opc = PMIF_CMD_REG; + else if (opc >= 0x20 && opc <= 0x2f) + opc = PMIF_CMD_EXT_REG_LONG; + else if (opc >= 0x38 && opc <= 0x3f) + opc = PMIF_CMD_EXT_REG_LONG; + else + return -EINVAL; + + raw_spin_lock_irqsave(&arb->lock, flags); + + /* Wait for Software Interface FSM state to be IDLE. */ + ret = readl_poll_timeout_atomic(arb->base + arb->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_IDLE, + PMIF_DELAY_US, PMIF_TIMEOUT); + if (ret < 0) { + /* set channel ready if the data has transferred */ + if (pmif_is_fsm_vldclr(arb)) + pmif_writel(arb, 1, inf_reg->ch_rdy); + dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n"); + goto out; + } + + /* Send the command. */ + cmd = (opc << 30) | (sid << 24) | (bc << 16) | addr; + pmif_writel(arb, cmd, inf_reg->ch_send); + + /* + * Wait for Software Interface FSM state to be WFVLDCLR, + * read the data and clear the valid flag. + */ + ret = readl_poll_timeout_atomic(arb->base + arb->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_WFVLDCLR, + PMIF_DELAY_US, PMIF_TIMEOUT); + if (ret < 0) { + dev_err(&ctrl->dev, "failed to wait for SWINF_WFVLDCLR\n"); + goto out; + } + + data = pmif_readl(arb, inf_reg->rdata); + memcpy(buf, &data, (bc & 3) + 1); + pmif_writel(arb, 1, inf_reg->ch_rdy); + +out: + raw_spin_unlock_irqrestore(&arb->lock, flags); + if (ret < 0) + return ret; + + return 0; +} + +static int pmif_spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, + u16 addr, const u8 *buf, size_t len) +{ + struct pmif *arb = spmi_controller_get_drvdata(ctrl); + struct ch_reg *inf_reg = NULL; + int ret; + u32 data, cmd, bc = len - 1; + unsigned long flags = 0; + + /* Check for argument validation. */ + if (sid & ~(0xf)) { + dev_err(&ctrl->dev, "exceed the max slv id\n"); + return -EINVAL; + } + + if (!arb) { + dev_err(&ctrl->dev, "Cannot get pmif control to send cmd\n"); + return -EINVAL; + } + + inf_reg = &arb->chan; + + /* Check the opcode */ + if (opc >= 0x40 && opc <= 0x5F) + opc = PMIF_CMD_REG; + else if (opc <= 0x0F) + opc = PMIF_CMD_EXT_REG_LONG; + else if (opc >= 0x30 && opc <= 0x37) + opc = PMIF_CMD_EXT_REG_LONG; + else if (opc >= 0x80) + opc = PMIF_CMD_REG_0; + else + return -EINVAL; + + raw_spin_lock_irqsave(&arb->lock, flags); + /* Wait for Software Interface FSM state to be IDLE. */ + ret = readl_poll_timeout_atomic(arb->base + arb->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_IDLE, + PMIF_DELAY_US, PMIF_TIMEOUT); + if (ret < 0) { + /* set channel ready if the data has transferred */ + if (pmif_is_fsm_vldclr(arb)) + pmif_writel(arb, 1, inf_reg->ch_rdy); + dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n"); + goto out; + } + + /* Set the write data. */ + memcpy(&data, buf, (bc & 3) + 1); + pmif_writel(arb, data, inf_reg->wdata); + + /* Send the command. */ + cmd = (opc << 30) | BIT(29) | (sid << 24) | (bc << 16) | addr; + pmif_writel(arb, cmd, inf_reg->ch_send); +out: + raw_spin_unlock_irqrestore(&arb->lock, flags); + if (ret < 0) + return ret; + + return 0; +} + +static struct pmif mt6873_pmif_arb[] = { + { + .regs = mt6873_regs, + .spmimst_regs = mt6873_spmi_regs, + .soc_chan = 2, + }, +}; + +static int mtk_spmi_probe(struct platform_device *pdev) +{ + struct pmif *arb; + struct spmi_controller *ctrl; + int err; + + ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*arb)); + if (!ctrl) + return -ENOMEM; + + ctrl->cmd = pmif_arb_cmd; + ctrl->read_cmd = pmif_spmi_read_cmd; + ctrl->write_cmd = pmif_spmi_write_cmd; + + /* re-assign of_id->data */ + spmi_controller_set_drvdata(ctrl, of_device_get_match_data(&pdev->dev)); + arb = spmi_controller_get_drvdata(ctrl); + if (!arb) { + err = -EINVAL; + dev_err(&pdev->dev, "Cannot get pmif control\n"); + goto err_put_ctrl; + } + + arb->base = devm_platform_ioremap_resource_byname(pdev, "pmif"); + if (IS_ERR(arb->base)) { + err = PTR_ERR(arb->base); + dev_err(&pdev->dev, "pmif failed to get the remappped memory\n"); + goto err_put_ctrl; + } + + arb->spmimst_base = devm_platform_ioremap_resource_byname(pdev, "spmimst"); + if (IS_ERR(arb->spmimst_base)) { + err = PTR_ERR(arb->spmimst_base); + dev_err(&pdev->dev, "spmimst failed to get the remappped memory\n"); + goto err_put_ctrl; + } + + arb->pmif_sys_ck = devm_clk_get(&pdev->dev, "pmif_sys_ck"); + if (IS_ERR(arb->pmif_sys_ck)) { + err = PTR_ERR(arb->pmif_sys_ck); + dev_err(&pdev->dev, "failed to get ap clock: %d\n", err); + goto err_put_ctrl; + } + + arb->pmif_tmr_ck = devm_clk_get(&pdev->dev, "pmif_tmr_ck"); + if (IS_ERR(arb->pmif_tmr_ck)) { + err = PTR_ERR(arb->pmif_tmr_ck); + dev_err(&pdev->dev, "failed to get tmr clock: %d\n", err); + goto err_put_ctrl; + } + + arb->spmimst_clk_mux = devm_clk_get(&pdev->dev, "spmimst_clk_mux"); + if (IS_ERR(arb->spmimst_clk_mux)) { + err = PTR_ERR(arb->spmimst_clk_mux); + dev_err(&pdev->dev, "failed to get mux: %d\n", err); + goto err_put_ctrl; + } + + err = clk_prepare_enable(arb->pmif_sys_ck); + if (err) { + dev_err(&pdev->dev, "fail to enable ap clk\n"); + goto err_put_ctrl; + } + + err = clk_prepare_enable(arb->pmif_tmr_ck); + if (err) { + dev_err(&pdev->dev, "fail to enable tmr clk.\n"); + goto err_clk_1; + } + + err = clk_prepare_enable(arb->spmimst_clk_mux); + if (err) { + dev_err(&pdev->dev, "fail to enable spmi master clk.\n"); + goto err_clk_2; + } + + arb->chan.ch_sta = PMIF_SWINF_0_STA + (PMIF_CHAN_OFFSET * arb->soc_chan); + arb->chan.wdata = PMIF_SWINF_0_WDATA_31_0 + (PMIF_CHAN_OFFSET * arb->soc_chan); + arb->chan.rdata = PMIF_SWINF_0_RDATA_31_0 + (PMIF_CHAN_OFFSET * arb->soc_chan); + arb->chan.ch_send = PMIF_SWINF_0_ACC + (PMIF_CHAN_OFFSET * arb->soc_chan); + arb->chan.ch_rdy = PMIF_SWINF_0_VLD_CLR + (PMIF_CHAN_OFFSET * arb->soc_chan); + + raw_spin_lock_init(&arb->lock); + + platform_set_drvdata(pdev, ctrl); + + err = spmi_controller_add(ctrl); + if (err) + goto err_domain_remove; + + return 0; + +err_domain_remove: + clk_disable_unprepare(arb->spmimst_clk_mux); +err_clk_2: + clk_disable_unprepare(arb->pmif_tmr_ck); +err_clk_1: + clk_disable_unprepare(arb->pmif_sys_ck); +err_put_ctrl: + spmi_controller_put(ctrl); + return err; +} + +static int mtk_spmi_remove(struct platform_device *pdev) +{ + struct spmi_controller *ctrl = platform_get_drvdata(pdev); + + spmi_controller_remove(ctrl); + spmi_controller_put(ctrl); + return 0; +} + +static const struct of_device_id mtk_spmi_match_table[] = { + { + .compatible = "mediatek,mt6873-spmi", + .data = &mt6873_pmif_arb, + }, { + /* sentinel */ + }, +}; +MODULE_DEVICE_TABLE(of, mtk_spmi_match_table); + +static struct platform_driver mtk_spmi_driver = { + .driver = { + .name = "spmi-mtk", + .of_match_table = of_match_ptr(mtk_spmi_match_table), + }, + .probe = mtk_spmi_probe, + .remove = mtk_spmi_remove, +}; +module_platform_driver(mtk_spmi_driver); + +MODULE_AUTHOR("Hsin-Hsiung Wang "); +MODULE_DESCRIPTION("MediaTek SPMI Driver"); +MODULE_LICENSE("GPL"); From patchwork Wed Dec 23 02:44:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 11987561 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=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT 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 77799C433E0 for ; Wed, 23 Dec 2020 02:56:06 +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 3C808205CA for ; 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Tue, 22 Dec 2020 18:54:37 -0800 Received: from mtkmbs05n1.mediatek.inc (172.21.101.15) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Dec 2020 18:44:36 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs05n1.mediatek.inc (172.21.101.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 23 Dec 2020 10:44:30 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 23 Dec 2020 10:44:34 +0800 From: Hsin-Hsiung Wang To: Stephen Boyd , Rob Herring , Matthias Brugger , Geert Uytterhoeven , Mauro Carvalho Chehab , Ulf Hansson , Mark Brown Subject: [PATCH v5 4/4] arm64: dts: mt8192: add spmi node Date: Wed, 23 Dec 2020 10:44:29 +0800 Message-ID: <1608691469-20919-5-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1608691469-20919-1-git-send-email-hsin-hsiung.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201222_215442_291014_C68B05D6 X-CRM114-Status: GOOD ( 12.39 ) 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: devicetree@vger.kernel.org, srv_heupstream@mediatek.com, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Project_Global_Chrome_Upstream_Group@mediatek.com, linux-mediatek@lists.infradead.org, Hsin-Hsiung Wang , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add spmi node to SOC MT8192. Signed-off-by: Hsin-Hsiung Wang --- arch/arm64/boot/dts/mediatek/mt8192.dtsi | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi index 69d45c7b31f1..6dc8aa97acc3 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi @@ -272,6 +272,21 @@ clock-names = "clk13m"; }; + spmi: spmi@10027000 { + compatible = "mediatek,mt6873-spmi"; + reg = <0 0x10027000 0 0x000e00>, + <0 0x10029000 0 0x000100>; + reg-names = "pmif", "spmimst"; + clocks = <&infracfg CLK_INFRA_PMIC_AP>, + <&infracfg CLK_INFRA_PMIC_TMR>, + <&topckgen CLK_TOP_SPMI_MST_SEL>; + clock-names = "pmif_sys_ck", + "pmif_tmr_ck", + "spmimst_clk_mux"; + assigned-clocks = <&topckgen CLK_TOP_PWRAP_ULPOSC_SEL>; + assigned-clock-parents = <&topckgen CLK_TOP_OSC_D10>; + }; + scp_adsp: syscon@10720000 { compatible = "mediatek,mt8192-scp_adsp", "syscon"; reg = <0 0x10720000 0 0x1000>;