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[98.197.58.203]) by smtp.gmail.com with ESMTPSA id w2-20020a056808018200b003c8643f0e5csm1067872oic.16.2024.04.30.21.08.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Apr 2024 21:08:23 -0700 (PDT) From: Alexandru Gagniuc To: Manivannan Sadhasivam , Bjorn Andersson , Konrad Dybcio , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas Cc: linux-kernel@vger.kernel.org, quic_kathirav@quicinc.com, Alexandru Gagniuc , linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v4 4/8] PCI: qcom: Switch to devm_clk_bulk_get_all() API to get the clocks from Devicetree Date: Tue, 30 Apr 2024 23:07:55 -0500 Message-Id: <20240501040800.1542805-14-mr.nuke.me@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240501040800.1542805-1-mr.nuke.me@gmail.com> References: <20240501040800.1542805-1-mr.nuke.me@gmail.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Manivannan Sadhasivam There is no need for the device drivers to validate the clocks defined in Devicetree. The validation should be performed by the DT schema and the drivers should just get all the clocks from DT. Right now the driver hardcodes the clock info and validates them against DT which is redundant. So use devm_clk_bulk_get_all() that just gets all the clocks defined in DT and get rid of all static clocks info from the driver. This simplifies the driver. Signed-off-by: Manivannan Sadhasivam Signed-off-by: Alexandru Gagniuc [moved clks to struct qcom_pcie to reduce code duplication] --- drivers/pci/controller/dwc/pcie-qcom.c | 163 ++++--------------------- 1 file changed, 25 insertions(+), 138 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 14772edcf0d3..ea81ff68d433 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -154,58 +154,42 @@ #define QCOM_PCIE_LINK_SPEED_TO_BW(speed) \ Mbps_to_icc(PCIE_SPEED2MBS_ENC(pcie_link_speed[speed])) -#define QCOM_PCIE_1_0_0_MAX_CLOCKS 4 struct qcom_pcie_resources_1_0_0 { - struct clk_bulk_data clks[QCOM_PCIE_1_0_0_MAX_CLOCKS]; struct reset_control *core; struct regulator *vdda; }; -#define QCOM_PCIE_2_1_0_MAX_CLOCKS 5 #define QCOM_PCIE_2_1_0_MAX_RESETS 6 #define QCOM_PCIE_2_1_0_MAX_SUPPLY 3 struct qcom_pcie_resources_2_1_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_1_0_MAX_CLOCKS]; struct reset_control_bulk_data resets[QCOM_PCIE_2_1_0_MAX_RESETS]; int num_resets; struct regulator_bulk_data supplies[QCOM_PCIE_2_1_0_MAX_SUPPLY]; }; -#define QCOM_PCIE_2_3_2_MAX_CLOCKS 4 #define QCOM_PCIE_2_3_2_MAX_SUPPLY 2 struct qcom_pcie_resources_2_3_2 { - struct clk_bulk_data clks[QCOM_PCIE_2_3_2_MAX_CLOCKS]; struct regulator_bulk_data supplies[QCOM_PCIE_2_3_2_MAX_SUPPLY]; }; -#define QCOM_PCIE_2_3_3_MAX_CLOCKS 5 #define QCOM_PCIE_2_3_3_MAX_RESETS 7 struct qcom_pcie_resources_2_3_3 { - struct clk_bulk_data clks[QCOM_PCIE_2_3_3_MAX_CLOCKS]; struct reset_control_bulk_data rst[QCOM_PCIE_2_3_3_MAX_RESETS]; }; -#define QCOM_PCIE_2_4_0_MAX_CLOCKS 4 #define QCOM_PCIE_2_4_0_MAX_RESETS 12 struct qcom_pcie_resources_2_4_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_4_0_MAX_CLOCKS]; - int num_clks; struct reset_control_bulk_data resets[QCOM_PCIE_2_4_0_MAX_RESETS]; int num_resets; }; -#define QCOM_PCIE_2_7_0_MAX_CLOCKS 15 #define QCOM_PCIE_2_7_0_MAX_SUPPLIES 2 struct qcom_pcie_resources_2_7_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_7_0_MAX_CLOCKS]; - int num_clks; struct regulator_bulk_data supplies[QCOM_PCIE_2_7_0_MAX_SUPPLIES]; struct reset_control *rst; }; -#define QCOM_PCIE_2_9_0_MAX_CLOCKS 5 struct qcom_pcie_resources_2_9_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_9_0_MAX_CLOCKS]; struct reset_control *rst; }; @@ -247,6 +231,8 @@ struct qcom_pcie { struct icc_path *icc_mem; const struct qcom_pcie_cfg *cfg; struct dentry *debugfs; + struct clk_bulk_data *clks; + int num_clks; bool suspended; }; @@ -337,22 +323,6 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie) if (ret) return ret; - res->clks[0].id = "iface"; - res->clks[1].id = "core"; - res->clks[2].id = "phy"; - res->clks[3].id = "aux"; - res->clks[4].id = "ref"; - - /* iface, core, phy are required */ - ret = devm_clk_bulk_get(dev, 3, res->clks); - if (ret < 0) - return ret; - - /* aux, ref are optional */ - ret = devm_clk_bulk_get_optional(dev, 2, res->clks + 3); - if (ret < 0) - return ret; - res->resets[0].id = "pci"; res->resets[1].id = "axi"; res->resets[2].id = "ahb"; @@ -373,7 +343,7 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); reset_control_bulk_assert(res->num_resets, res->resets); writel(1, pcie->parf + PARF_PHY_CTRL); @@ -413,7 +383,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie) static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) { - struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; struct device_node *node = dev->of_node; @@ -425,7 +394,7 @@ static int qcom_pcie_post_init_2_1_0(struct qcom_pcie *pcie) val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); - ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret) return ret; @@ -476,21 +445,11 @@ static int qcom_pcie_get_resources_1_0_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - int ret; res->vdda = devm_regulator_get(dev, "vdda"); if (IS_ERR(res->vdda)) return PTR_ERR(res->vdda); - res->clks[0].id = "iface"; - res->clks[1].id = "aux"; - res->clks[2].id = "master_bus"; - res->clks[3].id = "slave_bus"; - - ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); - if (ret < 0) - return ret; - res->core = devm_reset_control_get_exclusive(dev, "core"); return PTR_ERR_OR_ZERO(res->core); } @@ -500,7 +459,7 @@ static void qcom_pcie_deinit_1_0_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_1_0_0 *res = &pcie->res.v1_0_0; reset_control_assert(res->core); - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); regulator_disable(res->vdda); } @@ -517,7 +476,7 @@ static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie) return ret; } - ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret) { dev_err(dev, "cannot prepare/enable clocks\n"); goto err_assert_reset; @@ -532,7 +491,7 @@ static int qcom_pcie_init_1_0_0(struct qcom_pcie *pcie) return 0; err_disable_clks: - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); err_assert_reset: reset_control_assert(res->core); @@ -580,15 +539,6 @@ static int qcom_pcie_get_resources_2_3_2(struct qcom_pcie *pcie) if (ret) return ret; - res->clks[0].id = "aux"; - res->clks[1].id = "cfg"; - res->clks[2].id = "bus_master"; - res->clks[3].id = "bus_slave"; - - ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); - if (ret < 0) - return ret; - return 0; } @@ -596,7 +546,7 @@ static void qcom_pcie_deinit_2_3_2(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_3_2 *res = &pcie->res.v2_3_2; - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } @@ -613,7 +563,7 @@ static int qcom_pcie_init_2_3_2(struct qcom_pcie *pcie) return ret; } - ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret) { dev_err(dev, "cannot prepare/enable clocks\n"); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); @@ -661,18 +611,6 @@ static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie) bool is_ipq = of_device_is_compatible(dev->of_node, "qcom,pcie-ipq4019"); int ret; - res->clks[0].id = "aux"; - res->clks[1].id = "master_bus"; - res->clks[2].id = "slave_bus"; - res->clks[3].id = "iface"; - - /* qcom,pcie-ipq4019 is defined without "iface" */ - res->num_clks = is_ipq ? 3 : 4; - - ret = devm_clk_bulk_get(dev, res->num_clks, res->clks); - if (ret < 0) - return ret; - res->resets[0].id = "axi_m"; res->resets[1].id = "axi_s"; res->resets[2].id = "axi_m_sticky"; @@ -700,7 +638,7 @@ static void qcom_pcie_deinit_2_4_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_4_0 *res = &pcie->res.v2_4_0; reset_control_bulk_assert(res->num_resets, res->resets); - clk_bulk_disable_unprepare(res->num_clks, res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); } static int qcom_pcie_init_2_4_0(struct qcom_pcie *pcie) @@ -726,7 +664,7 @@ static int qcom_pcie_init_2_4_0(struct qcom_pcie *pcie) usleep_range(10000, 12000); - ret = clk_bulk_prepare_enable(res->num_clks, res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret) { reset_control_bulk_assert(res->num_resets, res->resets); return ret; @@ -742,16 +680,6 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) struct device *dev = pci->dev; int ret; - res->clks[0].id = "iface"; - res->clks[1].id = "axi_m"; - res->clks[2].id = "axi_s"; - res->clks[3].id = "ahb"; - res->clks[4].id = "aux"; - - ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); - if (ret < 0) - return ret; - res->rst[0].id = "axi_m"; res->rst[1].id = "axi_s"; res->rst[2].id = "pipe"; @@ -769,9 +697,7 @@ static int qcom_pcie_get_resources_2_3_3(struct qcom_pcie *pcie) static void qcom_pcie_deinit_2_3_3(struct qcom_pcie *pcie) { - struct qcom_pcie_resources_2_3_3 *res = &pcie->res.v2_3_3; - - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); } static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) @@ -801,7 +727,7 @@ static int qcom_pcie_init_2_3_3(struct qcom_pcie *pcie) */ usleep_range(2000, 2500); - ret = clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret) { dev_err(dev, "cannot prepare/enable clocks\n"); goto err_assert_resets; @@ -862,8 +788,6 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - unsigned int num_clks, num_opt_clks; - unsigned int idx; int ret; res->rst = devm_reset_control_array_get_exclusive(dev); @@ -877,37 +801,6 @@ static int qcom_pcie_get_resources_2_7_0(struct qcom_pcie *pcie) if (ret) return ret; - idx = 0; - res->clks[idx++].id = "aux"; - res->clks[idx++].id = "cfg"; - res->clks[idx++].id = "bus_master"; - res->clks[idx++].id = "bus_slave"; - res->clks[idx++].id = "slave_q2a"; - - num_clks = idx; - - ret = devm_clk_bulk_get(dev, num_clks, res->clks); - if (ret < 0) - return ret; - - res->clks[idx++].id = "tbu"; - res->clks[idx++].id = "ddrss_sf_tbu"; - res->clks[idx++].id = "aggre0"; - res->clks[idx++].id = "aggre1"; - res->clks[idx++].id = "noc_aggr"; - res->clks[idx++].id = "noc_aggr_4"; - res->clks[idx++].id = "noc_aggr_south_sf"; - res->clks[idx++].id = "cnoc_qx"; - res->clks[idx++].id = "sleep"; - res->clks[idx++].id = "cnoc_sf_axi"; - - num_opt_clks = idx - num_clks; - res->num_clks = idx; - - ret = devm_clk_bulk_get_optional(dev, num_opt_clks, res->clks + num_clks); - if (ret < 0) - return ret; - return 0; } @@ -925,7 +818,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) return ret; } - ret = clk_bulk_prepare_enable(res->num_clks, res->clks); + ret = clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); if (ret < 0) goto err_disable_regulators; @@ -977,7 +870,7 @@ static int qcom_pcie_init_2_7_0(struct qcom_pcie *pcie) return 0; err_disable_clocks: - clk_bulk_disable_unprepare(res->num_clks, res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); err_disable_regulators: regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); @@ -1015,7 +908,7 @@ static void qcom_pcie_deinit_2_7_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_7_0 *res = &pcie->res.v2_7_0; - clk_bulk_disable_unprepare(res->num_clks, res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies); } @@ -1101,17 +994,6 @@ static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - int ret; - - res->clks[0].id = "iface"; - res->clks[1].id = "axi_m"; - res->clks[2].id = "axi_s"; - res->clks[3].id = "axi_bridge"; - res->clks[4].id = "rchng"; - - ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); - if (ret < 0) - return ret; res->rst = devm_reset_control_array_get_exclusive(dev); if (IS_ERR(res->rst)) @@ -1122,9 +1004,7 @@ static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie) static void qcom_pcie_deinit_2_9_0(struct qcom_pcie *pcie) { - struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0; - - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(pcie->num_clks, pcie->clks); } static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie) @@ -1153,7 +1033,7 @@ static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie) usleep_range(2000, 2500); - return clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + return clk_bulk_prepare_enable(pcie->num_clks, pcie->clks); } static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) @@ -1561,6 +1441,13 @@ static int qcom_pcie_probe(struct platform_device *pdev) goto err_pm_runtime_put; } + pcie->num_clks = devm_clk_bulk_get_all(dev, &pcie->clks); + if (pcie->num_clks < 0) { + ret = pcie->num_clks; + dev_err(dev, "Failed to get clocks\n"); + goto err_pm_runtime_put; + } + ret = qcom_pcie_icc_init(pcie); if (ret) goto err_pm_runtime_put;