From patchwork Fri Mar 29 18:54:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 13610953 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8C92FC6FD1F for ; Fri, 29 Mar 2024 18:55:52 +0000 (UTC) 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:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Y5tuVV0zCTn489aT7Zg614QZajZsSk8jOIIZ3cCRLnQ=; b=Qk7P/ABZ2g6g5o Sm4GOU3MjHl2jqE7ROZ7zMXShv1jzAZM2E6s7gTltEhRMZ7Oa4lcoBqToHbR8lJaRxwMqVsw4vq7J JpP1kPlYHbBUBHlKOUOJyfoE+bk7HTw2HnI8x/5irlifas/DMb9OGpzTI5fMopvt0sO7vd8ohSPit roJXHFZdxAyb1uHTwUFU1xqJaXHvuWJeII2o9b6w+igp8O1M2aIbQETXrH29Z2nPd5qVzT4fFUYXy Usof5chbumcgGcKlGuMbyrvY+648/ya94hE1USwKZWQfRjMbr/O/rVq4nZDSx+tNFvBmvqWW4WCIG R54/xlk6SO8pYvVygc5w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rqHO6-00000001fT7-49F8; Fri, 29 Mar 2024 18:55:39 +0000 Received: from mail-ed1-x52d.google.com ([2a00:1450:4864:20::52d]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rqHNM-00000001eyv-01uV for linux-arm-kernel@lists.infradead.org; Fri, 29 Mar 2024 18:54:56 +0000 Received: by mail-ed1-x52d.google.com with SMTP id 4fb4d7f45d1cf-56bf6591865so3382255a12.0 for ; Fri, 29 Mar 2024 11:54:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1711738489; x=1712343289; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=cuRJarbec7jfhNmRygSPVxuNpYaNSltHxT1UdGqVad0=; b=Rq7O7yxVGzKF21k9NoU9czNVEq9z7bg6qQze1SMPCT6SxtfG8N9V4LmS1hyiAcZU1N 7LGmMG0gBxKhTPnXzsTeIZhggH9DFrJxc8BCQwRRYWXAHee3gHOkjNXEKkLOosHC0aXK +h09o8xpi5EJjapotcVW40WUDguxizuvN9DR75VnDR8OoQQq2Je4QkQKMMvHP0RUDtYP owxY1LO8IYg9DilPezmU3JXdpA+4hr8WoQIKqovHiPI7xZ5d6p+hb0z/2nZm+FqLSCx7 qRhd3mqznRUAbJTAxGa4ZTBGPzZC0vFmuTi9ZtyopMP7GPXJ4cbMRQ5qBXHtr7madDC6 dldw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711738489; x=1712343289; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cuRJarbec7jfhNmRygSPVxuNpYaNSltHxT1UdGqVad0=; b=nw0D2/qTumLlMuHYOSJEwNQgM4PWDdcDvs+bcYXu9XDYAJLRVDrXb1T1xXD7bYoM8f kB5YMG+XYMOv62LkYv6SjcmFTXYLXBGDV1gDWF0phA89YytvLoi14YWaF1MNWyTXttpa LCLUUyPGaI+Yfbe9Wa9F1lmHUsDvPyPa0PP0m/9y1rhuTCrmmn7Zo9UduxUetchiZMqe BW3dfIzFEU8SM/PvEusFsKk3nfDPw94aaHOt0CI4D0FDn9c8isxLqK5Epsw1ojPdoJ/O JUFbVetOVJFpHGhr1lYmAjC9oV9IDobIxvmEfvOgiik50qqXWHxvnYjaXRiCNEgaqfm5 gNmA== X-Forwarded-Encrypted: i=1; AJvYcCXmWD8wOrhCpQfOYIes0ppVT9LXwR9GRXArMAFjZqZvTQqsQAiJ2HsY+G5MmH538UcE7RC/ww6gYWs+mM8rKWH6pMEHaIhsRD17eTwFsAgcB8IRaNs= X-Gm-Message-State: AOJu0YyJaMAZcBLBbTY1pEOUuRRQ3hiTpSILXkvt3YBJd3z0KlmRngU5 uO7Gu7un6So7kNeayjjzg5R6PzgvwJ9NLTveSJJ7FxMz4O3Kn8gFEWEo078JOHg= X-Google-Smtp-Source: AGHT+IEkfmLlGD/keMPoNisXIDK6Cw079oLjkff8JBeQJYIy5gvktwlheJQX7F2EEstW1KRY8l+CIg== X-Received: by 2002:a17:906:751:b0:a47:533b:10 with SMTP id z17-20020a170906075100b00a47533b0010mr1949297ejb.62.1711738488994; Fri, 29 Mar 2024 11:54:48 -0700 (PDT) Received: from [127.0.1.1] ([79.114.172.194]) by smtp.gmail.com with ESMTPSA id gl20-20020a170906e0d400b00a46c39e6a47sm2235618ejb.148.2024.03.29.11.54.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Mar 2024 11:54:48 -0700 (PDT) From: Abel Vesa Date: Fri, 29 Mar 2024 20:54:21 +0200 Subject: [PATCH v7 4/6] spmi: pmic-arb: Make core resources acquiring a version operation MIME-Version: 1.0 Message-Id: <20240329-spmi-multi-master-support-v7-4-7b902824246c@linaro.org> References: <20240329-spmi-multi-master-support-v7-0-7b902824246c@linaro.org> In-Reply-To: <20240329-spmi-multi-master-support-v7-0-7b902824246c@linaro.org> To: Stephen Boyd , Matthias Brugger , Bjorn Andersson , Konrad Dybcio , Dmitry Baryshkov , Neil Armstrong , AngeloGioacchino Del Regno , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Srini Kandagatla , Johan Hovold , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, Abel Vesa X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=7896; i=abel.vesa@linaro.org; h=from:subject:message-id; bh=vH5adHP1EAvzF8O0o4HxU8svaRA6gdvZ4ICXbaOtPTA=; b=owEBbQKS/ZANAwAKARtfRMkAlRVWAcsmYgBmBw5tutK7rEXCC1CRUOAszcBVUrqbBgrxWDwTx 4pE8Zr4o6WJAjMEAAEKAB0WIQRO8+4RTnqPKsqn0bgbX0TJAJUVVgUCZgcObQAKCRAbX0TJAJUV VnNOEACAoQukHuH8idc09I21aE5kr9LtY48y1QJrzGLO4KLU6bIy2mBX5B+84hdzsSSF6lFpDmZ +yxQRqPS9jBoxPPQEVlR8qgQo0xQDfK/UfY2yS6GyZz42YHsf7yB9qNbBIYX/HBMCeNnio9e44c i+7IYQroFIReNs5KcdVU8kuH8IlQnP83/tNr6dqOfRs2T/WXf3y8zSF060+mu0NxJwR7JwLBSGW AWGz3lBEgrlbICGxbCIuBj32sCtdsWbuz95ZB267ZvNIKgzsVkkSZqz8Og4pyysGgCw4Zprd/mA DjjlDSe3zVEmK72aseNprriaGqm3aPaDtVZhyS3UccFeI2y2AV9g/kx8AXAGsJGRNUYL3Of538B bJhyJi4PxrAMfL5Fmi3LgxRnD5nEaRnLET3OkHONpZrDYvBJE68CW0Tusl91VKjBvdimDerkH+I SYCuIv4Yq+RHNSD53TG0CTmxbbDCjbL60MJOyVESy1uNk+BJzktucQwM/g6aYi1lw7jpwQojAkl VVl+CiGSIaWhNhPK1bGm3EKwSRNfHpZ2r9BVp/t+AFgTQAEJvxUhws1ji3yRDTreI2kv+vokmWy XMjQdJL8Bc9xAWJLBUg1urnXAuQE7wpxGdxCeZu1DZ7+Ln1Clh9QavcRfcXelfuGw/T7G/b4x2Z zIVrpzA5sDkZpaA== X-Developer-Key: i=abel.vesa@linaro.org; a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240329_115452_247567_7A7B1068 X-CRM114-Status: GOOD ( 20.66 ) 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 Rather than setting up the core, obsrv and chnls in probe by using version specific conditionals, add a dedicated "get_core_resources" version specific op and move the acquiring in there. Since there are no current users of the second bus yet, drop the comment about why devm_platform_ioremap_resource can't be used in case of "core", as it is not applicable anymore. Don't switch to devm_platform_ioremap_resource though as we need to keep track of core size. Reviewed-by: Neil Armstrong Signed-off-by: Abel Vesa --- drivers/spmi/spmi-pmic-arb.c | 113 +++++++++++++++++++++++++++---------------- 1 file changed, 70 insertions(+), 43 deletions(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 38fed8a585fe..188252bfb95f 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -203,6 +203,7 @@ struct spmi_pmic_arb { */ struct pmic_arb_ver_ops { const char *ver_str; + int (*get_core_resources)(struct platform_device *pdev, void __iomem *core); int (*init_apid)(struct spmi_pmic_arb *pmic_arb, int index); int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u16 ppid); /* spmi commands (read_cmd, write_cmd, cmd) functionality */ @@ -956,6 +957,19 @@ static int pmic_arb_init_apid_min_max(struct spmi_pmic_arb *pmic_arb) return 0; } +static int pmic_arb_get_core_resources_v1(struct platform_device *pdev, + void __iomem *core) +{ + struct spmi_pmic_arb *pmic_arb = platform_get_drvdata(pdev); + + pmic_arb->wr_base = core; + pmic_arb->rd_base = core; + + pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS; + + return 0; +} + static int pmic_arb_init_apid_v1(struct spmi_pmic_arb *pmic_arb, int index) { u32 *mapping_table; @@ -1063,6 +1077,33 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pmic_arb, u16 ppid) return apid; } +static int pmic_arb_get_obsrvr_chnls_v2(struct platform_device *pdev) +{ + struct spmi_pmic_arb *pmic_arb = platform_get_drvdata(pdev); + + pmic_arb->rd_base = devm_platform_ioremap_resource_byname(pdev, "obsrvr"); + if (IS_ERR(pmic_arb->rd_base)) + return PTR_ERR(pmic_arb->rd_base); + + pmic_arb->wr_base = devm_platform_ioremap_resource_byname(pdev, "chnls"); + if (IS_ERR(pmic_arb->wr_base)) + return PTR_ERR(pmic_arb->wr_base); + + return 0; +} + +static int pmic_arb_get_core_resources_v2(struct platform_device *pdev, + void __iomem *core) +{ + struct spmi_pmic_arb *pmic_arb = platform_get_drvdata(pdev); + + pmic_arb->core = core; + + pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS; + + return pmic_arb_get_obsrvr_chnls_v2(pdev); +} + static int pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pmic_arb, u16 ppid) { u16 apid_valid; @@ -1246,6 +1287,18 @@ static int pmic_arb_offset_v5(struct spmi_pmic_arb *pmic_arb, u8 sid, u16 addr, return offset; } +static int pmic_arb_get_core_resources_v7(struct platform_device *pdev, + void __iomem *core) +{ + struct spmi_pmic_arb *pmic_arb = platform_get_drvdata(pdev); + + pmic_arb->core = core; + + pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS_V7; + + return pmic_arb_get_obsrvr_chnls_v2(pdev); +} + /* * Only v7 supports 2 buses. Each bus will get a different apid count, read * from different registers. @@ -1469,6 +1522,7 @@ pmic_arb_apid_owner_v7(struct spmi_pmic_arb *pmic_arb, u16 n) static const struct pmic_arb_ver_ops pmic_arb_v1 = { .ver_str = "v1", + .get_core_resources = pmic_arb_get_core_resources_v1, .init_apid = pmic_arb_init_apid_v1, .ppid_to_apid = pmic_arb_ppid_to_apid_v1, .non_data_cmd = pmic_arb_non_data_cmd_v1, @@ -1484,6 +1538,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v1 = { static const struct pmic_arb_ver_ops pmic_arb_v2 = { .ver_str = "v2", + .get_core_resources = pmic_arb_get_core_resources_v2, .init_apid = pmic_arb_init_apid_v1, .ppid_to_apid = pmic_arb_ppid_to_apid_v2, .non_data_cmd = pmic_arb_non_data_cmd_v2, @@ -1499,6 +1554,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v2 = { static const struct pmic_arb_ver_ops pmic_arb_v3 = { .ver_str = "v3", + .get_core_resources = pmic_arb_get_core_resources_v2, .init_apid = pmic_arb_init_apid_v1, .ppid_to_apid = pmic_arb_ppid_to_apid_v2, .non_data_cmd = pmic_arb_non_data_cmd_v2, @@ -1514,6 +1570,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v3 = { static const struct pmic_arb_ver_ops pmic_arb_v5 = { .ver_str = "v5", + .get_core_resources = pmic_arb_get_core_resources_v2, .init_apid = pmic_arb_init_apid_v5, .ppid_to_apid = pmic_arb_ppid_to_apid_v5, .non_data_cmd = pmic_arb_non_data_cmd_v2, @@ -1529,6 +1586,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v5 = { static const struct pmic_arb_ver_ops pmic_arb_v7 = { .ver_str = "v7", + .get_core_resources = pmic_arb_get_core_resources_v7, .init_apid = pmic_arb_init_apid_v7, .ppid_to_apid = pmic_arb_ppid_to_apid_v5, .non_data_cmd = pmic_arb_non_data_cmd_v2, @@ -1565,16 +1623,6 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev) pmic_arb = spmi_controller_get_drvdata(ctrl); pmic_arb->spmic = ctrl; - /* - * Please don't replace this with devm_platform_ioremap_resource() or - * devm_ioremap_resource(). These both result in a call to - * devm_request_mem_region() which prevents multiple mappings of this - * register address range. SoCs with PMIC arbiter v7 may define two - * arbiter devices, for the two physical SPMI interfaces, which share - * some register address ranges (i.e. "core", "obsrvr", and "chnls"). - * Ensure that both devices probe successfully by calling devm_ioremap() - * which does not result in a devm_request_mem_region() call. - */ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core"); core = devm_ioremap(&ctrl->dev, res->start, resource_size(res)); if (IS_ERR(core)) @@ -1584,44 +1632,23 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev) hw_ver = readl_relaxed(core + PMIC_ARB_VERSION); - if (hw_ver < PMIC_ARB_VERSION_V2_MIN) { + if (hw_ver < PMIC_ARB_VERSION_V2_MIN) pmic_arb->ver_ops = &pmic_arb_v1; - pmic_arb->wr_base = core; - pmic_arb->rd_base = core; - } else { - pmic_arb->core = core; - - if (hw_ver < PMIC_ARB_VERSION_V3_MIN) - pmic_arb->ver_ops = &pmic_arb_v2; - else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) - pmic_arb->ver_ops = &pmic_arb_v3; - else if (hw_ver < PMIC_ARB_VERSION_V7_MIN) - pmic_arb->ver_ops = &pmic_arb_v5; - else - pmic_arb->ver_ops = &pmic_arb_v7; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "obsrvr"); - pmic_arb->rd_base = devm_ioremap(&ctrl->dev, res->start, - resource_size(res)); - if (IS_ERR(pmic_arb->rd_base)) - return PTR_ERR(pmic_arb->rd_base); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, - "chnls"); - pmic_arb->wr_base = devm_ioremap(&ctrl->dev, res->start, - resource_size(res)); - if (IS_ERR(pmic_arb->wr_base)) - return PTR_ERR(pmic_arb->wr_base); - } + else if (hw_ver < PMIC_ARB_VERSION_V3_MIN) + pmic_arb->ver_ops = &pmic_arb_v2; + else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) + pmic_arb->ver_ops = &pmic_arb_v3; + else if (hw_ver < PMIC_ARB_VERSION_V7_MIN) + pmic_arb->ver_ops = &pmic_arb_v5; + else + pmic_arb->ver_ops = &pmic_arb_v7; dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n", pmic_arb->ver_ops->ver_str, hw_ver); - if (hw_ver < PMIC_ARB_VERSION_V7_MIN) - pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS; - else - pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS_V7; + err = pmic_arb->ver_ops->get_core_resources(pdev, core); + if (err) + return err; err = pmic_arb->ver_ops->init_apid(pmic_arb, 0); if (err)