From patchwork Tue Aug 17 09:47:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Hsiung Wang X-Patchwork-Id: 12441253 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=-17.4 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 81874C4338F for ; Tue, 17 Aug 2021 09:52:36 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4754D601FA for ; Tue, 17 Aug 2021 09:52:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4754D601FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UHkncfxc447cnUxYzFoV5UUCnO1PEfWi0L6P8dkyb5c=; b=VvutXfF+XX9XYF 18CkHUqGwH8qG393hDlHDWJ4oo196AccXwM8zgTbfDlPuoy61gxjTn6Kv3axzhSjwJR7AF67s1JoS H1At3HfUw389MP5gZ1r/Ut54lHaqH6YGJjUsKDbe/8G8tbqog2SmUvrJodqlY/9O0jA5e+vNFsawL OWunkB/Gare/abUqFtrPM+yQAK1WCFu9q0IWyxDZnKnWb/PFoWrTacFqHwolO992aGIapCbOwb7P0 SoPRVUopiA4bPwpRBHZyDlQeccFgGQCZwIeYzSunnWtHwn4/zmy8pJZE7lbqPpAY6/ALKZD1tTndl ajoLM4n5U7oR99bNMc8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFvjE-001utx-N5; Tue, 17 Aug 2021 09:49:53 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mFvgo-001ttd-7R; Tue, 17 Aug 2021 09:47:29 +0000 X-UUID: fe85b6e4adbe40059879b687f32d8ba5-20210817 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=hPsoIrAiIG37O/065FQ7BiWte+hyc2grN8mdqNy2WdU=; b=BWLgtWmiPlgXANH277sOzwmsBM8R5Nua+GIeYE8VimjroDhG0kmHHFThlyq9QPCYdQkPtiA0MRWY/XwbM4d45p0U5SxOgx2ylD4AdBniMuCPnJycsIfvLTGaYItTheh1bQYoUILNdNtj9HHDsbUIypnT5rKdYSkONx1HIKDbajw=; X-UUID: fe85b6e4adbe40059879b687f32d8ba5-20210817 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1568950050; Tue, 17 Aug 2021 02:47:15 -0700 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 17 Aug 2021 02:47:14 -0700 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 17 Aug 2021 17:47:13 +0800 Received: from mtksdaap41.mediatek.inc (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 17 Aug 2021 17:47:13 +0800 From: Hsin-Hsiung Wang To: Stephen Boyd , Rob Herring , Matthias Brugger CC: Hsin-Hsiung Wang , , , , , Subject: [PATCH v11 3/5] spmi: mediatek: Add support for MT6873/8192 Date: Tue, 17 Aug 2021 17:47:08 +0800 Message-ID: <1629193630-19994-4-git-send-email-hsin-hsiung.wang@mediatek.com> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1629193630-19994-1-git-send-email-hsin-hsiung.wang@mediatek.com> References: <1629193630-19994-1-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-20210817_024722_359485_E4E20DCE X-CRM114-Status: GOOD ( 24.47 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 --- changes since v10: - remove the unnecessary check for clk and drop debug log. - include platform_device.h for platform driver. - add a new blank line before function returns. - refactor the driver for better code quality. --- drivers/spmi/Kconfig | 10 + drivers/spmi/Makefile | 2 + drivers/spmi/spmi-mtk-pmif.c | 459 +++++++++++++++++++++++++++++++++++ 3 files changed, 471 insertions(+) create mode 100644 drivers/spmi/spmi-mtk-pmif.c diff --git a/drivers/spmi/Kconfig b/drivers/spmi/Kconfig index 2874b6c26028..ea5703f6e544 100644 --- a/drivers/spmi/Kconfig +++ b/drivers/spmi/Kconfig @@ -34,4 +34,14 @@ 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 6e092e6f290c..0b21aaffcbb9 100644 --- a/drivers/spmi/Makefile +++ b/drivers/spmi/Makefile @@ -6,3 +6,5 @@ obj-$(CONFIG_SPMI) += spmi.o obj-$(CONFIG_SPMI_HISI3670) += hisi-spmi-controller.o obj-$(CONFIG_SPMI_MSM_PMIC_ARB) += spmi-pmic-arb.o +obj-$(CONFIG_SPMI_MTK_PMIF) += spmi-mtk-pmif.o + diff --git a/drivers/spmi/spmi-mtk-pmif.c b/drivers/spmi/spmi-mtk-pmif.c new file mode 100644 index 000000000000..35d338a19d76 --- /dev/null +++ b/drivers/spmi/spmi-mtk-pmif.c @@ -0,0 +1,459 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2021 MediaTek Inc. + +#include +#include +#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_US (10 * 1000) + +#define PMIF_CHAN_OFFSET 0x5 + +#define PMIF_MAX_CLKS 3 + +#define SPMI_OP_ST_BUSY 1 + +struct ch_reg { + u32 ch_sta; + u32 wdata; + u32 rdata; + u32 ch_send; + u32 ch_rdy; +}; + +struct pmif_data { + const u32 *regs; + const u32 *spmimst_regs; + u32 soc_chan; +}; + +struct pmif { + void __iomem *base; + void __iomem *spmimst_base; + struct ch_reg chan; + struct clk_bulk_data clks[PMIF_MAX_CLKS]; + size_t nclks; + const struct pmif_data *data; +}; + +static const char * const pmif_clock_names[] = { + "pmif_sys_ck", "pmif_tmr_ck", "spmimst_clk_mux", +}; + +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->data->regs[reg]); +} + +static void pmif_writel(struct pmif *arb, u32 val, enum pmif_regs reg) +{ + writel(val, arb->base + arb->data->regs[reg]); +} + +static void mtk_spmi_writel(struct pmif *arb, u32 val, enum spmi_regs reg) +{ + writel(val, arb->spmimst_base + arb->data->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 || opc > SPMI_CMD_WAKEUP) + return -EINVAL; + + cmd = opc - SPMI_CMD_RESET; + + mtk_spmi_writel(arb, (cmd << 0x4) | sid, SPMI_OP_ST_CTRL); + ret = readl_poll_timeout_atomic(arb->spmimst_base + arb->data->spmimst_regs[SPMI_OP_ST_STA], + rdata, (rdata & SPMI_OP_ST_BUSY) == SPMI_OP_ST_BUSY, + PMIF_DELAY_US, PMIF_TIMEOUT_US); + 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; + + /* Check for argument validation. */ + if (sid & ~0xf) { + dev_err(&ctrl->dev, "exceed the max slv id\n"); + return -EINVAL; + } + + if (len > 4) { + dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len); + + return -EINVAL; + } + + if (opc >= 0x60 && opc <= 0x7f) + opc = PMIF_CMD_REG; + else if ((opc >= 0x20 && opc <= 0x2f) || (opc >= 0x38 && opc <= 0x3f)) + opc = PMIF_CMD_EXT_REG_LONG; + else + return -EINVAL; + + /* Wait for Software Interface FSM state to be IDLE. */ + inf_reg = &arb->chan; + ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_IDLE, + PMIF_DELAY_US, PMIF_TIMEOUT_US); + 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) | ((len - 1) << 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->data->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_WFVLDCLR, + PMIF_DELAY_US, PMIF_TIMEOUT_US); + 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, len); + pmif_writel(arb, 1, inf_reg->ch_rdy); + +out: + 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; + int ret; + u32 data, cmd; + + if (len > 4) { + dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len); + + return -EINVAL; + } + + /* Check the opcode */ + if (opc >= 0x40 && opc <= 0x5F) + opc = PMIF_CMD_REG; + else if ((opc <= 0xF) || (opc >= 0x30 && opc <= 0x37)) + opc = PMIF_CMD_EXT_REG_LONG; + else if (opc >= 0x80) + opc = PMIF_CMD_REG_0; + else + return -EINVAL; + + /* Wait for Software Interface FSM state to be IDLE. */ + inf_reg = &arb->chan; + ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta], + data, GET_SWINF(data) == SWINF_IDLE, + PMIF_DELAY_US, PMIF_TIMEOUT_US); + 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, len); + pmif_writel(arb, data, inf_reg->wdata); + + /* Send the command. */ + cmd = (opc << 30) | BIT(29) | (sid << 24) | ((len - 1) << 16) | addr; + pmif_writel(arb, cmd, inf_reg->ch_send); + +out: + return ret; +} + +static const struct pmif_data 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, i; + u32 chan_offset; + + ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*arb)); + if (!ctrl) + return -ENOMEM; + + arb = spmi_controller_get_drvdata(ctrl); + arb->data = device_get_match_data(&pdev->dev); + if (!arb->data) { + err = -EINVAL; + dev_err(&pdev->dev, "Cannot get drv_data\n"); + goto err_put_ctrl; + } + + arb->base = devm_platform_ioremap_resource_byname(pdev, "pmif"); + if (IS_ERR(arb->base)) { + err = PTR_ERR(arb->base); + 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); + goto err_put_ctrl; + } + + arb->nclks = ARRAY_SIZE(pmif_clock_names); + for (i = 0; i < arb->nclks; i++) + arb->clks[i].id = pmif_clock_names[i]; + + err = devm_clk_bulk_get(&pdev->dev, arb->nclks, arb->clks); + if (err) { + dev_err(&pdev->dev, "Failed to get clocks: %d\n", err); + goto err_put_ctrl; + } + + err = clk_bulk_prepare_enable(arb->nclks, arb->clks); + if (err) { + dev_err(&pdev->dev, "Failed to enable clocks: %d\n", err); + goto err_put_ctrl; + } + + ctrl->cmd = pmif_arb_cmd; + ctrl->read_cmd = pmif_spmi_read_cmd; + ctrl->write_cmd = pmif_spmi_write_cmd; + + chan_offset = PMIF_CHAN_OFFSET * arb->data->soc_chan; + arb->chan.ch_sta = PMIF_SWINF_0_STA + chan_offset; + arb->chan.wdata = PMIF_SWINF_0_WDATA_31_0 + chan_offset; + arb->chan.rdata = PMIF_SWINF_0_RDATA_31_0 + chan_offset; + arb->chan.ch_send = PMIF_SWINF_0_ACC + chan_offset; + arb->chan.ch_rdy = PMIF_SWINF_0_VLD_CLR + chan_offset; + + platform_set_drvdata(pdev, ctrl); + + err = spmi_controller_add(ctrl); + if (err) + goto err_domain_remove; + + return 0; + +err_domain_remove: + clk_bulk_disable_unprepare(arb->nclks, arb->clks); +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); + struct pmif *arb = spmi_controller_get_drvdata(ctrl); + + clk_bulk_disable_unprepare(arb->nclks, arb->clks); + 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");