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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240220-spmi-multi-master-support-v4-3-dc813c878ba8@linaro.org> References: <20240220-spmi-multi-master-support-v4-0-dc813c878ba8@linaro.org> In-Reply-To: <20240220-spmi-multi-master-support-v4-0-dc813c878ba8@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=7622; i=abel.vesa@linaro.org; h=from:subject:message-id; bh=eoBqasf2Lf4kUVh5GoF8UMFjxTzmG4XIhpcZ+yy2rOQ=; b=owEBbQKS/ZANAwAKARtfRMkAlRVWAcsmYgBl1KI1j15AdL3iObZKp8qMphgZYSKDsh31QNQGz 5Y2y/XmNEeJAjMEAAEKAB0WIQRO8+4RTnqPKsqn0bgbX0TJAJUVVgUCZdSiNQAKCRAbX0TJAJUV VqvlEACaWqBY3l0w5nJxEJWtUZlGVcc8i5vgbq9Ncmz8w4q5pUhhuIS/3b6W5hGZ4TL+tP/mg2q 6S789JPyXknh5/qovzv+uz+pOjxrRzEFKYRvTZDhzs1YXYbWEQKVI5OyxQ+bh7Rt957cYOkoqYG mHCndlJn19SfnHO936OBxfRdgBFtaScKy/AUdjcojLUPzkYpPORLiGf3/MEEk3MAtXj4IrTmosw da2mW5zL6nLvt7G2aLO/bKJgy273QHrx9fel3AsS2cuQ7KxNsg8ZLdFOiWiT1RyqGOK7XlxpKw1 qq1bYsd3lrRUhu4X0mIcv/cwwoPWNaWJyrhzFhy5NjIaYORHfPG/gR0m/HSwNmA+tuCCt+HlmFf dSOw1R1dzYWb/6+OwpjxrhRfGh1xSnAUzGegb6OPgxYI+LiBbtr6Xb8/t7L+m9nv/Iemz4lw3di WKxSiYOMUgty84gLbjOr2Jpz0lklzSiqLo0YByvdh0J8rX0p1fUKnw+aDfZXK6e6yil0IHi2IN2 WGQRW9ylhdxQLg9ucGvOZ9LvJX7FVXYDLN84atY5i0CRzjitKvtpnBIu63ciXDKB/Tvi5MPC5uk KPXcaABYYhJ5/jtiRnv+Pd6oWfBYsiMViXaMlgsKwduSOE9KZ1rofsPy2R8Mrxel98nAZ8P0A2z sb6iQ/31pk0uj/g== 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. Signed-off-by: Abel Vesa --- drivers/spmi/spmi-pmic-arb.c | 115 +++++++++++++++++++++++++++------------= ---- 1 file changed, 72 insertions(+), 43 deletions(-) diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 38fed8a585fe..5aad188a3db2 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 *cor= e); 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; } =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, int index) { u32 *mapping_table; @@ -1063,6 +1077,35 @@ 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); + struct device *dev =3D &pdev->dev; + struct resource *res; + + 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; @@ -1246,6 +1289,18 @@ 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); +} + /* * Only v7 supports 2 buses. Each bus will get a different apid count, read * from different registers. @@ -1469,6 +1524,7 @@ 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, @@ -1484,6 +1540,7 @@ 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, @@ -1499,6 +1556,7 @@ 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, @@ -1514,6 +1572,7 @@ 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, @@ -1529,6 +1588,7 @@ 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_v7, .ppid_to_apid =3D pmic_arb_ppid_to_apid_v5, .non_data_cmd =3D pmic_arb_non_data_cmd_v2, @@ -1565,16 +1625,6 @@ 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 (IS_ERR(core)) @@ -1584,44 +1634,23 @@ 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 (IS_ERR(pmic_arb->rd_base)) - return PTR_ERR(pmic_arb->rd_base); - - 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 (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 =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, 0); if (err) --=20 2.34.1