[2/2] drivers: soc: qcom: add TCSR driver

Message ID	20220122001609.15904-3-ansuelsmth@gmail.com (mailing list archive)
State	Changes Requested
Headers	show Return-Path: <linux-arm-msm-owner@kernel.org> From: Ansuel Smith <ansuelsmth@gmail.com> To: Andy Gross <agross@kernel.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Rob Herring <robh+dt@kernel.org>, Ansuel Smith <ansuelsmth@gmail.com>, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] drivers: soc: qcom: add TCSR driver Date: Sat, 22 Jan 2022 01:16:09 +0100 Message-Id: <20220122001609.15904-3-ansuelsmth@gmail.com> In-Reply-To: <20220122001609.15904-1-ansuelsmth@gmail.com> References: <20220122001609.15904-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Add QCOM TCSR driver \| expand [0/2] Add QCOM TCSR driver [1/2] dt-bindings: soc: qcom: add qcom,tcsr bindings [2/2] drivers: soc: qcom: add TCSR driver

diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig index e718b8735444..20dd341ae369 100644 --- a/drivers/soc/qcom/Kconfig +++ b/drivers/soc/qcom/Kconfig @@ -209,6 +209,14 @@ config QCOM_STATS various SoC level low power modes statistics and export to debugfs interface. +config QCOM_TCSR + tristate "QCOM Top Control and Status Registers" + depends on ARCH_QCOM || COMPILE_TEST + select MFD_SYSCON + help + Say y here to enable TCSR support. The TCSR provides control + functions for various peripherals (USB, WiFi, ESS). + config QCOM_WCNSS_CTRL tristate "Qualcomm WCNSS control driver" depends on ARCH_QCOM || COMPILE_TEST diff --git a/drivers/soc/qcom/Makefile b/drivers/soc/qcom/Makefile index 70d5de69fd7b..b17dd46ed1fa 100644 --- a/drivers/soc/qcom/Makefile +++ b/drivers/soc/qcom/Makefile @@ -28,3 +28,4 @@ obj-$(CONFIG_QCOM_LLCC) += llcc-qcom.o obj-$(CONFIG_QCOM_RPMHPD) += rpmhpd.o obj-$(CONFIG_QCOM_RPMPD) += rpmpd.o obj-$(CONFIG_QCOM_KRYO_L2_ACCESSORS) += kryo-l2-accessors.o +obj-$(CONFIG_QCOM_TCSR) += qcom_tcsr.o diff --git a/drivers/soc/qcom/qcom_tcsr.c b/drivers/soc/qcom/qcom_tcsr.c new file mode 100644 index 000000000000..dc80768d57c2 --- /dev/null +++ b/drivers/soc/qcom/qcom_tcsr.c @@ -0,0 +1,198 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/bitfield.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> + +#define TCSR_USB_PORT_SEL_REG 0xb0 +#define TCSR_USB_PORT_SEL_MASK GENMASK(1, 0) + +#define TCSR_USB_SELECT_USB3_P0 FIELD_PREP(TCSR_USB_PORT_SEL_MASK, 0x1) +#define TCSR_USB_SELECT_USB3_P1 FIELD_PREP(TCSR_USB_PORT_SEL_MASK, 0x2) +#define TCSR_USB_SELECT_USB3_DUAL FIELD_PREP(TCSR_USB_PORT_SEL_MASK, 0x3) + +/* IPQ40xx HS PHY Mode Select */ +#define TCSR_USB_HSPHY_CONFIG_REG 0xc +#define TCSR_USB_HSPHY_MODE_MASK BIT(21) +#define TCSR_USB_HSPHY_MODE_HOST_MODE FIELD_PREP(TCSR_USB_HSPHY_MODE_MASK, 0x0) +#define TCSR_USB_HSPHY_MODE_DEVICE_MODE FIELD_PREP(TCSR_USB_HSPHY_MODE_MASK, 0x1) + +/* IPQ40xx ess interface mode select */ +#define TCSR_ESS_INTERFACE_SEL_REG 0x0 +#define TCSR_ESS_INTERFACE_SEL_MASK GENMASK(3, 0) +#define TCSR_ESS_PSGMII FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x0) +#define TCSR_ESS_PSGMII_RGMII5 FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x1) +#define TCSR_ESS_PSGMII_RMII0 FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x2) +#define TCSR_ESS_PSGMII_RMII1 FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x4) +#define TCSR_ESS_PSGMII_RMII0_RMII1 FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x6) +#define TCSR_ESS_PSGMII_RGMII4 FIELD_PREP(TCSR_ESS_INTERFACE_SEL_MASK, 0x9) + +/* IPQ40xx WiFi Global Config */ +#define TCSR_WIFI0_GLB_CFG_OFFSET_REG 0x0 +#define TCSR_WIFI1_GLB_CFG_OFFSET_REG 0x4 +/* Enable AXI master bus Axid translating to confirm all txn submitted by order */ +#define TCSR_WIFI_GLB_CFG_AXID_EN BIT(30) +/* 1: use locally generate socslv_wxi_bvalid for performance. + * 0: use SNOC socslv_wxi_bvalid. + */ +#define TCSR_WIFI_GLB_CFG_SOCSLV_WXI_BVALID BIT(24) +#define TCSR_WIFI_GLB_CFG_SOCSLV_SNOC FIELD_PREP(TCSR_WIFI_GLB_CFG_SOCSLV_WXI_BVALID, 0x0) +#define TCSR_WIFI_GLB_CFG_SOCSLV_LOCAL FIELD_PREP(TCSR_WIFI_GLB_CFG_SOCSLV_WXI_BVALID, 0x1) + +/* Configure special wifi memory type needed for some IPQ40xx devices */ +#define TCSR_PNOC_SNOC_MEMTYPE_M0_M2_REG 0x4 +#define TCSR_WIFI_NOC_MEMTYPE_MASK GENMASK(26, 24) +#define TCSR_WIFI_NOC_MEMTYPE_M0_M2 FIELD_PREP(TCSR_WIFI_NOC_MEMTYPE_MASK, 0x2) + +static int qcom_tcsr_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node; + struct regmap *tcsr; + int ret, val; + + node = dev->of_node; + tcsr = syscon_node_to_regmap(node); + if (IS_ERR(tcsr)) + return PTR_ERR(tcsr); + + if (of_find_property(node, "qcom,usb-ctrl-select", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq8064")) { + if (of_property_match_string(node, "qcom,usb-ctrl-select", + "p0")) { + val = TCSR_USB_SELECT_USB3_P0; + } else if (of_property_match_string(node, "qcom,usb-ctrl-select", + "p1")) { + val = TCSR_USB_SELECT_USB3_P1; + } else if (of_property_match_string(node, "qcom,usb-ctrl-select", + "dual")) { + val = TCSR_USB_SELECT_USB3_DUAL; + } else { + dev_err(dev, "invalid value for qcom,usb-ctrl-select"); + return -EINVAL; + } + + ret = regmap_update_bits(tcsr, TCSR_USB_PORT_SEL_REG, + TCSR_USB_PORT_SEL_MASK, val); + if (ret) + return ret; + } + + if (of_find_property(node, "qcom,usb-hsphy-mode-select", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq4019")) { + if (of_property_match_string(node, "qcom,usb-hsphy-mode-select", + "host")) { + val = TCSR_USB_HSPHY_MODE_HOST_MODE; + } else if (of_property_match_string(node, "qcom,usb-hsphy-mode-select", + "device")) { + val = TCSR_USB_HSPHY_MODE_DEVICE_MODE; + } else { + dev_err(dev, "invalid value for qcom,usb-hsphy-mode-select"); + return -EINVAL; + } + + ret = regmap_update_bits(tcsr, TCSR_USB_HSPHY_CONFIG_REG, + TCSR_USB_HSPHY_MODE_MASK, val); + if (ret) + return ret; + } + + if (of_find_property(node, "qcom,ess-interface-select", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq4019")) { + if (of_property_match_string(node, "qcom,ess-interface-select", + "psgmii")) { + val = TCSR_ESS_PSGMII; + } else if (of_property_match_string(node, "qcom,ess-interface-select", + "rgmii5")) { + val = TCSR_ESS_PSGMII_RGMII5; + } else if (of_property_match_string(node, "qcom,ess-interface-select", + "rmii0")) { + val = TCSR_ESS_PSGMII_RMII0; + } else if (of_property_match_string(node, "qcom,ess-interface-select", + "rmii1")) { + val = TCSR_ESS_PSGMII_RMII1; + } else if (of_property_match_string(node, "qcom,ess-interface-select", + "rmii0_rmii1")) { + val = TCSR_ESS_PSGMII_RMII0_RMII1; + } else if (of_property_match_string(node, "qcom,ess-interface-select", + "rgmii4")) { + val = TCSR_ESS_PSGMII_RGMII4; + } else { + dev_err(dev, "invalid value for qcom,ess-interface-select"); + return -EINVAL; + } + + ret = regmap_update_bits(tcsr, TCSR_ESS_INTERFACE_SEL_REG, + TCSR_ESS_INTERFACE_SEL_MASK, val); + if (ret) + return ret; + } + + if (of_find_property(node, "qcom,wifi-glb-cfg-enable-axid", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq4019")) { + ret = regmap_set_bits(tcsr, TCSR_WIFI0_GLB_CFG_OFFSET_REG, + TCSR_WIFI_GLB_CFG_AXID_EN); + ret = regmap_set_bits(tcsr, TCSR_WIFI1_GLB_CFG_OFFSET_REG, + TCSR_WIFI_GLB_CFG_AXID_EN); + if (ret) + return ret; + } + + if (of_find_property(node, "qcom,wifi-glb-cfg-socslv-mode", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq4019")) { + if (of_property_match_string(node, "qcom,wifi-glb-cfg-socslv-mode", + "snoc")) { + val = TCSR_WIFI_GLB_CFG_SOCSLV_SNOC; + } else if (of_property_match_string(node, "qcom,wifi-glb-cfg-socslv-mode", + "local")) { + val = TCSR_WIFI_GLB_CFG_SOCSLV_SNOC; + } else { + dev_err(dev, "invalid value for qcom,wifi-glb-cfg-socslv-mode"); + return -EINVAL; + } + + ret = regmap_update_bits(tcsr, TCSR_WIFI0_GLB_CFG_OFFSET_REG, + TCSR_WIFI_GLB_CFG_SOCSLV_WXI_BVALID, val); + ret = regmap_update_bits(tcsr, TCSR_WIFI1_GLB_CFG_OFFSET_REG, + TCSR_WIFI_GLB_CFG_SOCSLV_WXI_BVALID, val); + } + + if (of_find_property(node, "qcom,wifi_noc_memtype_m0_m2", NULL) && + of_device_is_compatible(node, "qcom,tcsr-ipq4019")) { + ret = regmap_update_bits(tcsr, TCSR_PNOC_SNOC_MEMTYPE_M0_M2_REG, + TCSR_WIFI_NOC_MEMTYPE_MASK, + TCSR_WIFI_NOC_MEMTYPE_M0_M2); + if (ret) + return ret; + } + + return 0; +} + +static const struct of_device_id qcom_tcsr_dt_match[] = { + { .compatible = "qcom,tcsr-ipq8064", }, + { .compatible = "qcom,tcsr-ipq4019", }, + { }, +}; +MODULE_DEVICE_TABLE(of, qcom_tcsr_dt_match); + +static struct platform_driver qcom_tcsr_driver = { + .probe = qcom_tcsr_probe, + .driver = { + .name = "qcom-tcsr", + .of_match_table = qcom_tcsr_dt_match, + }, +}; + +module_platform_driver(qcom_tcsr_driver); + +MODULE_AUTHOR("Ansuel Smith <ansuelsmth@gmail.com>"); +MODULE_DESCRIPTION("QCOM TCSR driver"); +MODULE_LICENSE("GPL v2");

[2/2] drivers: soc: qcom: add TCSR driver

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