From nobody Thu Nov 14 16:35:37 2024 Received: from mail-ej1-f41.google.com (mail-ej1-f41.google.com [209.85.218.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B218745C18 for ; Wed, 17 Apr 2024 20:01:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.41 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713384092; cv=none; b=lbmEwgriA8A/6I0JSFSxbniK7utfo78XXoiDk6tr7qOPk9ShHBNZq42RrQbCHEH5ompAGxoVJOkolvEIornrnOEyRwhzRBk9rYW5U/s2d33XFdil1KtAUneed6rTgArksddWkSp9RIAsUP2KJwpz9vVm9JdgWm4IluGRtgn9ewk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713384092; c=relaxed/simple; bh=JgE0pLWRTv3liz7sG3qb+WlIgraYdzr6rzGEiGnF5I4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=L6h8KfJq0WF9HBcSrRlcSnR9y8TanUwX1EUbKy1OTq3wySHn2M7sn7XnMs7H5J2WB6C8hAYjjyeizKChfOjRn/yTflPmFy/5Aj3VAxO/Iqhugeb4RkmozKfGpadnQhWkP9ltQvQLIjcgPAaaUhoS8HyfPKZgJob2iWS+q2mAWNs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=A9qVxFzo; arc=none smtp.client-ip=209.85.218.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="A9qVxFzo" Received: by mail-ej1-f41.google.com with SMTP id a640c23a62f3a-a526d381d2fso219292466b.0 for ; Wed, 17 Apr 2024 13:01:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1713384089; x=1713988889; darn=vger.kernel.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=9Ik1QcwFkKnesUoCKrKTfZ744eQhYqC76PyVF8lARPM=; b=A9qVxFzoe0g6j5s1SWEkig3vJR/5ZzvnKEzax7oPcbbp1l9rhGLqDqApq4x0sfMP1D fMkw0CA5CGxPgVQXCHMRo3FPj5tuKNbdeMV3c6qFqzMVZTVNVqAdejHiH2J53IYP6vYD HI/qY489N4BudlIiLwrHcwJncVxficJRw480hzLpXM6SFd0SNKAFKSp3A5COrS+oIBHd tmiSNEcqHL+JAwprWWV51vMFrlKmnXo1Dbxr78JeY+6KIKrC42obUtmOZ2uR7x/0jDF+ 7hCiQHcNlcPAJ77CHorkqpIKubFgAnjXhLwwHHgrMJHdPAvDEuLv68skxeOUlL/Kx92c 3Wsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713384089; x=1713988889; 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=9Ik1QcwFkKnesUoCKrKTfZ744eQhYqC76PyVF8lARPM=; b=MCaImorBv0vc3tr2FVrveJkkPtez2ooSTcVc8j6VvamIUNW4nqQ4+Pp095TxuIr217 AofVSYaYuc8FzZwdN9Y+ZNRGL8b53gt+sziN8EvaxIxx5we1tTaun/R2vusk/TB3tyRU GCp/lzSw2PhA8j005OgT/6hjlQHiuwNMAjrI5sycoWggXSH8cfzKwrAFoEN37bvDPGzw ADP3Fe1bjYcwz7WJIp2qvE5fVw8RvAuW/uXwilwRc9n2PTe1A5EqbSEl63uZyLoYwBke BJYDHNz365NOLrdqsrBANPS5JkKs/pJvMHyqFl8mmnBNtuCFu+CRguxt3r72OUDTd/y9 N7Sg== X-Forwarded-Encrypted: i=1; AJvYcCW+BsYIfoSlSYecNjzSOnC5zqFXLE5L3m3KNRpf0oRqk/04RAAc8Ab7n55/S/6fDG9EtWk0HqddAoZASglbhtwn/CV2KTyvIOgjcM2k X-Gm-Message-State: AOJu0Yw1nwb93bxkLiDUrLfyliry6Sx3L6wQ5jNI7kZ5UKzCEIvaP3dY n5sSZtNgBN8BzH0arh2AoLSPeAfSTlLNGA66pPuC/CNsVkXjsHOrXzCG/buRZSI= X-Google-Smtp-Source: AGHT+IH0ADVjOSm46pm7JjBY2G41SJgsx0GYCr4kfnbaMkRcZph7J0C5UHNbVGDyRkwCgDxixTPbbQ== X-Received: by 2002:a17:906:33d7:b0:a51:c62f:3c91 with SMTP id w23-20020a17090633d700b00a51c62f3c91mr145681eja.21.1713384088938; Wed, 17 Apr 2024 13:01:28 -0700 (PDT) Received: from [127.0.1.1] ([79.114.172.194]) by smtp.gmail.com with ESMTPSA id gs6-20020a170906f18600b00a555ef55ab5sm939981ejb.218.2024.04.17.13.01.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Apr 2024 13:01:28 -0700 (PDT) From: Abel Vesa Date: Wed, 17 Apr 2024 23:00:57 +0300 Subject: [PATCH v10 5/7] spmi: pmic-arb: Make core resources acquiring a version operation Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240417-spmi-multi-master-support-v10-5-5bc6d322e266@linaro.org> References: <20240417-spmi-multi-master-support-v10-0-5bc6d322e266@linaro.org> In-Reply-To: <20240417-spmi-multi-master-support-v10-0-5bc6d322e266@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 , David Collins , 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=8178; i=abel.vesa@linaro.org; h=from:subject:message-id; bh=JgE0pLWRTv3liz7sG3qb+WlIgraYdzr6rzGEiGnF5I4=; b=owEBbQKS/ZANAwAKARtfRMkAlRVWAcsmYgBmICqIeZOQ/UFnoQfy8FF9orO8nCgmRRZlXvP9E obaa5rfUNyJAjMEAAEKAB0WIQRO8+4RTnqPKsqn0bgbX0TJAJUVVgUCZiAqiAAKCRAbX0TJAJUV VnrHEACcNk9YzKjklZVvURP0R2ebjLmBuVNrEpPeJWAK6M8jxodrHRei7dQWJjTjPknRP7tKwuD lUedljsovk4q7UZt4yeX6kIbH0zcxppunqWB6ri3PA0jYP7BWbZ+w4oUUrgF0QGc8+FGtUKE0+i 7DwwW57X5mSwAfp/DFyQAkBEoZqru61D0Gan0rMZzKvkaIqH/MU65YG5d5e10qeiRDy4+g0hRLK KeaOrc/qp7UJb2WRbJAQ/giyPYahtcc7rlFX/nVYtT+InNmEy0aHyVzwjjaRxVR5md7C21px/g9 W5Pap+fFjCcr0UlDWfqWzGRaauEYhqAUArGimmPThwTbFeZ+FFJVD4eZ3gmJvL7VioqUcNeKYbX 2affei5CxttUztREbpi5c+7jq4SyZ3xR2+pu9zS+EMZaEVU7I/GwfWOGW6+5Gseh+t4WCbt4FmU cLN0yvSIftEpPRD/hGmwWmu89oGdxtKsKnXdKV4xyV65b7EKuwnqBeborL/pUK5zHgjTeJkJQPz uyME4yjgmefvjIET0HP9XPa7h4pqCcV4T5zRkkFzFdFgM684bnIugdkitiA2PGd/8KqgOREnx1w m1lNJ28BPjlWa5ZBEVS2408/80kD+fO6r9F+6rgFMJqTbHeR2ZehbyfLswrfSE8j2iXNcw3gzrq 3MMIMjRT2PC1aEA== X-Developer-Key: i=abel.vesa@linaro.org; a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE 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 | 114 +++++++++++++++++++++++++++------------= ---- 1 file changed, 71 insertions(+), 43 deletions(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index fe45d62a42e2..db33ca0e11b8 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -186,6 +186,7 @@ struct spmi_pmic_arb { * struct pmic_arb_ver_ops - version dependent functionality. * * @ver_str: version string. + * @get_core_resources: initializes the core, observer and channels * @init_apid: finds the apid base and count * @ppid_to_apid: finds the apid for a given ppid. * @non_data_cmd: on v1 issues an spmi non-data command. @@ -206,6 +207,7 @@ struct spmi_pmic_arb { */ struct pmic_arb_ver_ops { const char *ver_str; + int (*get_core_resources)(struct platform_device *pdev, void __iomem *cor= e); int (*init_apid)(struct spmi_pmic_arb *pmic_arb); int (*ppid_to_apid)(struct spmi_pmic_arb *pmic_arb, u16 ppid); /* spmi commands (read_cmd, write_cmd, cmd) functionality */ @@ -961,6 +963,19 @@ static int pmic_arb_init_apid_min_max(struct spmi_pmic= _arb *pmic_arb) return 0; } =20 +static int pmic_arb_get_core_resources_v1(struct platform_device *pdev, + void __iomem *core) +{ + struct spmi_pmic_arb *pmic_arb =3D platform_get_drvdata(pdev); + + pmic_arb->wr_base =3D core; + pmic_arb->rd_base =3D core; + + pmic_arb->max_periphs =3D PMIC_ARB_MAX_PERIPHS; + + return 0; +} + static int pmic_arb_init_apid_v1(struct spmi_pmic_arb *pmic_arb) { u32 *mapping_table; @@ -1062,6 +1077,33 @@ static u16 pmic_arb_find_apid(struct spmi_pmic_arb *= pmic_arb, u16 ppid) return apid; } =20 +static int pmic_arb_get_obsrvr_chnls_v2(struct platform_device *pdev) +{ + struct spmi_pmic_arb *pmic_arb =3D platform_get_drvdata(pdev); + + pmic_arb->rd_base =3D 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 =3D 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 =3D platform_get_drvdata(pdev); + + pmic_arb->core =3D core; + + pmic_arb->max_periphs =3D 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 pp= id) { u16 apid_valid; @@ -1239,6 +1281,18 @@ static int pmic_arb_offset_v5(struct spmi_pmic_arb *= pmic_arb, u8 sid, u16 addr, return offset; } =20 +static int pmic_arb_get_core_resources_v7(struct platform_device *pdev, + void __iomem *core) +{ + struct spmi_pmic_arb *pmic_arb =3D platform_get_drvdata(pdev); + + pmic_arb->core =3D core; + + pmic_arb->max_periphs =3D PMIC_ARB_MAX_PERIPHS_V7; + + return pmic_arb_get_obsrvr_chnls_v2(pdev); +} + /* * v7 offset per ee and per apid for observer channels and per apid for * read/write channels. @@ -1419,6 +1473,7 @@ pmic_arb_apid_owner_v7(struct spmi_pmic_arb *pmic_arb= , u16 n) =20 static const struct pmic_arb_ver_ops pmic_arb_v1 =3D { .ver_str =3D "v1", + .get_core_resources =3D pmic_arb_get_core_resources_v1, .init_apid =3D pmic_arb_init_apid_v1, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v1, .non_data_cmd =3D pmic_arb_non_data_cmd_v1, @@ -1434,6 +1489,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v1 =3D { =20 static const struct pmic_arb_ver_ops pmic_arb_v2 =3D { .ver_str =3D "v2", + .get_core_resources =3D pmic_arb_get_core_resources_v2, .init_apid =3D pmic_arb_init_apid_v1, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v2, .non_data_cmd =3D pmic_arb_non_data_cmd_v2, @@ -1449,6 +1505,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v2 =3D { =20 static const struct pmic_arb_ver_ops pmic_arb_v3 =3D { .ver_str =3D "v3", + .get_core_resources =3D pmic_arb_get_core_resources_v2, .init_apid =3D pmic_arb_init_apid_v1, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v2, .non_data_cmd =3D pmic_arb_non_data_cmd_v2, @@ -1464,6 +1521,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v3 =3D { =20 static const struct pmic_arb_ver_ops pmic_arb_v5 =3D { .ver_str =3D "v5", + .get_core_resources =3D pmic_arb_get_core_resources_v2, .init_apid =3D pmic_arb_init_apid_v5, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v5, .non_data_cmd =3D pmic_arb_non_data_cmd_v2, @@ -1479,6 +1537,7 @@ static const struct pmic_arb_ver_ops pmic_arb_v5 =3D { =20 static const struct pmic_arb_ver_ops pmic_arb_v7 =3D { .ver_str =3D "v7", + .get_core_resources =3D pmic_arb_get_core_resources_v7, .init_apid =3D pmic_arb_init_apid_v5, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v5, .non_data_cmd =3D pmic_arb_non_data_cmd_v2, @@ -1515,16 +1574,6 @@ static int spmi_pmic_arb_probe(struct platform_devic= e *pdev) pmic_arb =3D spmi_controller_get_drvdata(ctrl); pmic_arb->spmic =3D ctrl; =20 - /* - * 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 =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, "core"); core =3D devm_ioremap(&ctrl->dev, res->start, resource_size(res)); if (!core) @@ -1534,44 +1583,23 @@ static int spmi_pmic_arb_probe(struct platform_devi= ce *pdev) =20 hw_ver =3D readl_relaxed(core + PMIC_ARB_VERSION); =20 - if (hw_ver < PMIC_ARB_VERSION_V2_MIN) { + if (hw_ver < PMIC_ARB_VERSION_V2_MIN) pmic_arb->ver_ops =3D &pmic_arb_v1; - pmic_arb->wr_base =3D core; - pmic_arb->rd_base =3D core; - } else { - pmic_arb->core =3D core; - - if (hw_ver < PMIC_ARB_VERSION_V3_MIN) - pmic_arb->ver_ops =3D &pmic_arb_v2; - else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) - pmic_arb->ver_ops =3D &pmic_arb_v3; - else if (hw_ver < PMIC_ARB_VERSION_V7_MIN) - pmic_arb->ver_ops =3D &pmic_arb_v5; - else - pmic_arb->ver_ops =3D &pmic_arb_v7; - - res =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, - "obsrvr"); - pmic_arb->rd_base =3D devm_ioremap(&ctrl->dev, res->start, - resource_size(res)); - if (!pmic_arb->rd_base) - return -ENOMEM; - - res =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, - "chnls"); - pmic_arb->wr_base =3D devm_ioremap(&ctrl->dev, res->start, - resource_size(res)); - if (!pmic_arb->wr_base) - return -ENOMEM; - } + else if (hw_ver < PMIC_ARB_VERSION_V3_MIN) + pmic_arb->ver_ops =3D &pmic_arb_v2; + else if (hw_ver < PMIC_ARB_VERSION_V5_MIN) + pmic_arb->ver_ops =3D &pmic_arb_v3; + else if (hw_ver < PMIC_ARB_VERSION_V7_MIN) + pmic_arb->ver_ops =3D &pmic_arb_v5; + else + pmic_arb->ver_ops =3D &pmic_arb_v7; =20 dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n", pmic_arb->ver_ops->ver_str, hw_ver); =20 - if (hw_ver < PMIC_ARB_VERSION_V7_MIN) - pmic_arb->max_periphs =3D PMIC_ARB_MAX_PERIPHS; - else - pmic_arb->max_periphs =3D PMIC_ARB_MAX_PERIPHS_V7; + err =3D pmic_arb->ver_ops->get_core_resources(pdev, core); + if (err) + return err; =20 err =3D pmic_arb->ver_ops->init_apid(pmic_arb); if (err) --=20 2.34.1