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Tue, 24 Mar 2020 03:20:50 -0700 (PDT) From: Neil Armstrong To: kishon@ti.com, balbi@kernel.org, khilman@baylibre.com, martin.blumenstingl@googlemail.com Subject: [PATCH 10/13] phy: amlogic: meson-gxl-usb3: remove code for non-existing PHY Date: Tue, 24 Mar 2020 11:20:27 +0100 Message-Id: <20200324102030.31000-11-narmstrong@baylibre.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20200324102030.31000-1-narmstrong@baylibre.com> References: <20200324102030.31000-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200324_032053_270198_5D787EA3 X-CRM114-Status: GOOD ( 17.69 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:344 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Neil Armstrong Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Martin Blumenstingl The registers which are managed by the meson-gxl-usb3 PHY driver are actually "USB control" registers (which are "glue" registers which manage OTG detection and routing of the OTG capable port between the DWC2 peripheral-only controller and the DWC3 host-only controller). Drop the meson-gxl-usb3 PHY driver now that the dwc3-meson-g12a-usb driver supports the USB control registers on GXL and GXM SoCs (these were previously managed by the meson-gxl-usb3 PHY driver). Signed-off-by: Martin Blumenstingl Signed-off-by: Neil Armstrong --- .../bindings/phy/meson-gxl-usb3-phy.txt | 31 -- drivers/phy/amlogic/Kconfig | 12 - drivers/phy/amlogic/Makefile | 1 - drivers/phy/amlogic/phy-meson-gxl-usb3.c | 283 ------------------ 4 files changed, 327 deletions(-) delete mode 100644 Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt delete mode 100644 drivers/phy/amlogic/phy-meson-gxl-usb3.c diff --git a/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt b/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt deleted file mode 100644 index 114947e1de3d..000000000000 --- a/Documentation/devicetree/bindings/phy/meson-gxl-usb3-phy.txt +++ /dev/null @@ -1,31 +0,0 @@ -* Amlogic Meson GXL and GXM USB3 PHY and OTG detection binding - -Required properties: -- compatible: Should be "amlogic,meson-gxl-usb3-phy" -- #phys-cells: must be 0 (see phy-bindings.txt in this directory) -- reg: The base address and length of the registers -- interrupts: the interrupt specifier for the OTG detection -- clocks: phandles to the clocks for - - the USB3 PHY - - and peripheral mode/OTG detection -- clock-names: must contain "phy" and "peripheral" -- resets: phandle to the reset lines for: - - the USB3 PHY and - - peripheral mode/OTG detection -- reset-names: must contain "phy" and "peripheral" - -Optional properties: -- phy-supply: see phy-bindings.txt in this directory - - -Example: - usb3_phy0: phy@78080 { - compatible = "amlogic,meson-gxl-usb3-phy"; - #phy-cells = <0>; - reg = <0x0 0x78080 0x0 0x20>; - interrupts = ; - clocks = <&clkc CLKID_USB_OTG>, <&clkc_AO CLKID_AO_CEC_32K>; - clock-names = "phy", "peripheral"; - resets = <&reset RESET_USB_OTG>, <&reset RESET_USB_OTG>; - reset-names = "phy", "peripheral"; - }; diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index af774ac2b934..77db9535ac6d 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -26,18 +26,6 @@ config PHY_MESON_GXL_USB2 GXL and GXM SoCs. If unsure, say N. -config PHY_MESON_GXL_USB3 - tristate "Meson GXL and GXM USB3 PHY drivers" - default ARCH_MESON - depends on OF && (ARCH_MESON || COMPILE_TEST) - depends on USB_SUPPORT - select GENERIC_PHY - select REGMAP_MMIO - help - Enable this to support the Meson USB3 PHY and OTG detection - IP block found in Meson GXL and GXM SoCs. - If unsure, say N. - config PHY_MESON_G12A_USB2 tristate "Meson G12A USB2 PHY driver" default ARCH_MESON diff --git a/drivers/phy/amlogic/Makefile b/drivers/phy/amlogic/Makefile index 11d1c42ac2be..8552e7153b99 100644 --- a/drivers/phy/amlogic/Makefile +++ b/drivers/phy/amlogic/Makefile @@ -2,5 +2,4 @@ obj-$(CONFIG_PHY_MESON8B_USB2) += phy-meson8b-usb2.o obj-$(CONFIG_PHY_MESON_GXL_USB2) += phy-meson-gxl-usb2.o obj-$(CONFIG_PHY_MESON_G12A_USB2) += phy-meson-g12a-usb2.o -obj-$(CONFIG_PHY_MESON_GXL_USB3) += phy-meson-gxl-usb3.o obj-$(CONFIG_PHY_MESON_G12A_USB3_PCIE) += phy-meson-g12a-usb3-pcie.o diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb3.c b/drivers/phy/amlogic/phy-meson-gxl-usb3.c deleted file mode 100644 index c0e9e4c16149..000000000000 --- a/drivers/phy/amlogic/phy-meson-gxl-usb3.c +++ /dev/null @@ -1,283 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Meson GXL USB3 PHY and OTG mode detection driver - * - * Copyright (C) 2018 Martin Blumenstingl - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define USB_R0 0x00 - #define USB_R0_P30_FSEL_MASK GENMASK(5, 0) - #define USB_R0_P30_PHY_RESET BIT(6) - #define USB_R0_P30_TEST_POWERDOWN_HSP BIT(7) - #define USB_R0_P30_TEST_POWERDOWN_SSP BIT(8) - #define USB_R0_P30_ACJT_LEVEL_MASK GENMASK(13, 9) - #define USB_R0_P30_TX_BOOST_LEVEL_MASK GENMASK(16, 14) - #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) - #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) - #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) - #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) - #define USB_R0_U2D_ACT BIT(31) - -#define USB_R1 0x04 - #define USB_R1_U3H_BIGENDIAN_GS BIT(0) - #define USB_R1_U3H_PME_ENABLE BIT(1) - #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(6, 2) - #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(11, 7) - #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(15, 12) - #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) - #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) - #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) - #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) - #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) - -#define USB_R2 0x08 - #define USB_R2_P30_CR_DATA_IN_MASK GENMASK(15, 0) - #define USB_R2_P30_CR_READ BIT(16) - #define USB_R2_P30_CR_WRITE BIT(17) - #define USB_R2_P30_CR_CAP_ADDR BIT(18) - #define USB_R2_P30_CR_CAP_DATA BIT(19) - #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) - #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) - -#define USB_R3 0x0c - #define USB_R3_P30_SSC_ENABLE BIT(0) - #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) - #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) - #define USB_R3_P30_REF_SSP_EN BIT(13) - #define USB_R3_P30_LOS_BIAS_MASK GENMASK(18, 16) - #define USB_R3_P30_LOS_LEVEL_MASK GENMASK(23, 19) - #define USB_R3_P30_MPLL_MULTIPLIER_MASK GENMASK(30, 24) - -#define USB_R4 0x10 - #define USB_R4_P21_PORT_RESET_0 BIT(0) - #define USB_R4_P21_SLEEP_M0 BIT(1) - #define USB_R4_MEM_PD_MASK GENMASK(3, 2) - #define USB_R4_P21_ONLY BIT(4) - -#define USB_R5 0x14 - #define USB_R5_ID_DIG_SYNC BIT(0) - #define USB_R5_ID_DIG_REG BIT(1) - #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) - #define USB_R5_ID_DIG_EN_0 BIT(4) - #define USB_R5_ID_DIG_EN_1 BIT(5) - #define USB_R5_ID_DIG_CURR BIT(6) - #define USB_R5_ID_DIG_IRQ BIT(7) - #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) - #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) - -/* read-only register */ -#define USB_R6 0x18 - #define USB_R6_P30_CR_DATA_OUT_MASK GENMASK(15, 0) - #define USB_R6_P30_CR_ACK BIT(16) - -struct phy_meson_gxl_usb3_priv { - struct regmap *regmap; - enum phy_mode mode; - struct clk *clk_phy; - struct clk *clk_peripheral; - struct reset_control *reset; -}; - -static const struct regmap_config phy_meson_gxl_usb3_regmap_conf = { - .reg_bits = 8, - .val_bits = 32, - .reg_stride = 4, - .max_register = USB_R6, -}; - -static int phy_meson_gxl_usb3_power_on(struct phy *phy) -{ - struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); - - regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, - USB_R5_ID_DIG_EN_0); - regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, - USB_R5_ID_DIG_EN_1); - regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_TH_MASK, - FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); - - return 0; -} - -static int phy_meson_gxl_usb3_power_off(struct phy *phy) -{ - struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); - - regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, 0); - regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, 0); - - return 0; -} - -static int phy_meson_gxl_usb3_set_mode(struct phy *phy, - enum phy_mode mode, int submode) -{ - struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); - - switch (mode) { - case PHY_MODE_USB_HOST: - regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, 0); - regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, - 0); - break; - - case PHY_MODE_USB_DEVICE: - regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, - USB_R0_U2D_ACT); - regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0, - USB_R4_P21_SLEEP_M0); - break; - - default: - dev_err(&phy->dev, "unsupported PHY mode %d\n", mode); - return -EINVAL; - } - - priv->mode = mode; - - return 0; -} - -static int phy_meson_gxl_usb3_init(struct phy *phy) -{ - struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); - int ret; - - ret = reset_control_reset(priv->reset); - if (ret) - goto err; - - ret = clk_prepare_enable(priv->clk_phy); - if (ret) - goto err; - - ret = clk_prepare_enable(priv->clk_peripheral); - if (ret) - goto err_disable_clk_phy; - - ret = phy_meson_gxl_usb3_set_mode(phy, priv->mode, 0); - if (ret) - goto err_disable_clk_peripheral; - - regmap_update_bits(priv->regmap, USB_R1, - USB_R1_U3H_FLADJ_30MHZ_REG_MASK, - FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); - - return 0; - -err_disable_clk_peripheral: - clk_disable_unprepare(priv->clk_peripheral); -err_disable_clk_phy: - clk_disable_unprepare(priv->clk_phy); -err: - return ret; -} - -static int phy_meson_gxl_usb3_exit(struct phy *phy) -{ - struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy); - - clk_disable_unprepare(priv->clk_peripheral); - clk_disable_unprepare(priv->clk_phy); - - return 0; -} - -static const struct phy_ops phy_meson_gxl_usb3_ops = { - .power_on = phy_meson_gxl_usb3_power_on, - .power_off = phy_meson_gxl_usb3_power_off, - .set_mode = phy_meson_gxl_usb3_set_mode, - .init = phy_meson_gxl_usb3_init, - .exit = phy_meson_gxl_usb3_exit, - .owner = THIS_MODULE, -}; - -static int phy_meson_gxl_usb3_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - struct phy_meson_gxl_usb3_priv *priv; - struct resource *res; - struct phy *phy; - struct phy_provider *phy_provider; - void __iomem *base; - int ret; - - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - priv->regmap = devm_regmap_init_mmio(dev, base, - &phy_meson_gxl_usb3_regmap_conf); - if (IS_ERR(priv->regmap)) - return PTR_ERR(priv->regmap); - - priv->clk_phy = devm_clk_get(dev, "phy"); - if (IS_ERR(priv->clk_phy)) - return PTR_ERR(priv->clk_phy); - - priv->clk_peripheral = devm_clk_get(dev, "peripheral"); - if (IS_ERR(priv->clk_peripheral)) - return PTR_ERR(priv->clk_peripheral); - - priv->reset = devm_reset_control_array_get_shared(dev); - if (IS_ERR(priv->reset)) - return PTR_ERR(priv->reset); - - /* - * default to host mode as hardware defaults and/or boot-loader - * behavior can result in this PHY starting up in device mode. this - * default and the initialization in phy_meson_gxl_usb3_init ensure - * that we reproducibly start in a known mode on all devices. - */ - priv->mode = PHY_MODE_USB_HOST; - - phy = devm_phy_create(dev, np, &phy_meson_gxl_usb3_ops); - if (IS_ERR(phy)) { - ret = PTR_ERR(phy); - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to create PHY\n"); - - return ret; - } - - phy_set_drvdata(phy, priv); - - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); - - return PTR_ERR_OR_ZERO(phy_provider); -} - -static const struct of_device_id phy_meson_gxl_usb3_of_match[] = { - { .compatible = "amlogic,meson-gxl-usb3-phy", }, - { }, -}; -MODULE_DEVICE_TABLE(of, phy_meson_gxl_usb3_of_match); - -static struct platform_driver phy_meson_gxl_usb3_driver = { - .probe = phy_meson_gxl_usb3_probe, - .driver = { - .name = "phy-meson-gxl-usb3", - .of_match_table = phy_meson_gxl_usb3_of_match, - }, -}; -module_platform_driver(phy_meson_gxl_usb3_driver); - -MODULE_AUTHOR("Martin Blumenstingl "); -MODULE_DESCRIPTION("Meson GXL USB3 PHY and OTG detection driver"); -MODULE_LICENSE("GPL v2");