From patchwork Thu Jun 16 13:38:11 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 12883881 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 876D7C43334 for ; Thu, 16 Jun 2022 13:38:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Q0b4xuxNj64do9wC/xHoB2heQNv+c/jzmBgiuSDJwbg=; b=s/5tGiep14JU45 vX+i8a8L6+6QQcTmBnjaJJ0jAa6uoQfXtNQEDKcV8DG79keqZRpxrj++W82QzZ5KXFMPKG8+sizxi pkwy0FZhj5/3BtyX7jqY49yEJ+/g9ZrOydTNByyMO3XtOSiJFTZV1IpW3uoyv1my6bIGjo7xFttdT DMS1nbkl55beB8lDfMCkQGBY2EmVqjLcFNr24uJ/W8jnIN1pt/b7/hKyLM5axgyS7M2wyqoJBRkH6 MLovN9We7T+2tUExYyFnPkTB1EVryP2dnDjzTMv5UH0avkZp7w94l0/A927nF29rwq7KLOgS/EPnZ OPmSCtmDRadHPebsCJrw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1pi4-002Uo9-To; Thu, 16 Jun 2022 13:38:56 +0000 Received: from mail-wr1-x430.google.com ([2a00:1450:4864:20::430]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o1phY-002Ubx-Iq for linux-phy@lists.infradead.org; Thu, 16 Jun 2022 13:38:28 +0000 Received: by mail-wr1-x430.google.com with SMTP id o8so1938664wro.3 for ; Thu, 16 Jun 2022 06:38:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=F/SPXYyJ9pOv+57/VRPyN+3QaTNRZ+8Q87oNWa1ed6U=; b=sZnvhiQPTbFhgH01BZXK9frx5kA9oJjPA7EMRswq3DvCa7aU2L5g/j16bM8oXtkyta +6FFNp85niS7md8GlEVv6dVl98KHd4ItmqnZyV5UZ21UaR5BSI2QdXVgdK4P7F9/05c0 tz9W+4UPJzYD9RjCidvYnXljAXw39h2u+Vj86JfR+Vj/Jects2tXu53R5vpYJe1s4lkJ 9/gCtdFoTGn1fpcZyy2sFS4ezcNNDRTrdnb3u8Scp7rv27YI5dnx1psDIityA7Qkd/VM L0ApCvLQWYvfmo5Xnk66wXKtIiFm1NUtKDIPDeBmdNlb33mfMSiHnd38NEKWn5KOTktH RwKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=F/SPXYyJ9pOv+57/VRPyN+3QaTNRZ+8Q87oNWa1ed6U=; b=r6Q91ci1z+K2uNqWsAM0gNA2DNLrXMEWXbNnAsS3AGm2QkL9Uv6dRra11zk4ZEirN/ 9nw/GgO1mGYcE28TZINnS3cCbD0v1Fu9ig8n8EjsDfBj+6BKV6BAFJOExDRkSocEUJwX A1FJj26n6343iZ/xD4OcJ10xgLW11dQEB0Cnwecq2pZjOEeCLLHtZk46uDudp17KRY9k 9MnPU6F8BT8HgJgo7LJbNCvMJaTf3wR3OsWKgPu1O4GEAvq7PMLEkFKb2FU6CtSdoy4h FO2JYlF1wT+M6qYHgrZDgcugm68fOM+x+LIZDSBDDs3qS1+qFqIK5z/jfsvKbdd8LjL3 blyQ== X-Gm-Message-State: AJIora/r5S0FCGepfa8G7tnSeLkpZHSN2EjImJJi6RE8Anc2P7vdne6L 1pG2QhiiykRUhQk4xmmSeqairg== X-Google-Smtp-Source: AGRyM1uzUj7FAN/10Bu3b+bPtVXXKsugwJewcCZ3H2BR0vg8eYeVP6T8bZOBrzVRTv2yR+QDna/jIA== X-Received: by 2002:a5d:4d8f:0:b0:210:3e14:ff27 with SMTP id b15-20020a5d4d8f000000b002103e14ff27mr4601797wru.81.1655386701496; Thu, 16 Jun 2022 06:38:21 -0700 (PDT) Received: from localhost.localdomain ([2a0d:e487:34f:da80:9c48:d9f8:5c33:3dd5]) by smtp.gmail.com with ESMTPSA id v12-20020a5d678c000000b0020c5253d90asm1935423wru.86.2022.06.16.06.38.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Jun 2022 06:38:21 -0700 (PDT) From: Neil Armstrong To: kishon@ti.com, vkoul@kernel.org Cc: linux-phy@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong Subject: [PATCH v4 2/2] phy: amlogic: Add G12A Analog MIPI D-PHY driver Date: Thu, 16 Jun 2022 15:38:11 +0200 Message-Id: <20220616133811.1674777-3-narmstrong@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220616133811.1674777-1-narmstrong@baylibre.com> References: <20220616133811.1674777-1-narmstrong@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220616_063824_661309_41D53E10 X-CRM114-Status: GOOD ( 20.27 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org The Amlogic G12A SoCs embeds an Analog MIPI D-PHY used to communicate with DSI panels. Signed-off-by: Neil Armstrong --- drivers/phy/amlogic/Kconfig | 12 ++ drivers/phy/amlogic/Makefile | 1 + .../amlogic/phy-meson-g12a-mipi-dphy-analog.c | 177 ++++++++++++++++++ 3 files changed, 190 insertions(+) create mode 100644 drivers/phy/amlogic/phy-meson-g12a-mipi-dphy-analog.c diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig index 486ca23aba32..e4d1170efd54 100644 --- a/drivers/phy/amlogic/Kconfig +++ b/drivers/phy/amlogic/Kconfig @@ -59,6 +59,18 @@ config PHY_MESON_G12A_USB3_PCIE in Meson G12A SoCs. If unsure, say N. +config PHY_MESON_G12A_MIPI_DPHY_ANALOG + tristate "Meson G12A MIPI Analog DPHY driver" + default ARCH_MESON + depends on OF && (ARCH_MESON || COMPILE_TEST) + select GENERIC_PHY + select REGMAP_MMIO + select GENERIC_PHY_MIPI_DPHY + help + Enable this to support the Meson MIPI Analog DPHY found in Meson G12A + SoCs. + If unsure, say N. + config PHY_MESON_AXG_PCIE tristate "Meson AXG PCIE PHY driver" default ARCH_MESON diff --git a/drivers/phy/amlogic/Makefile b/drivers/phy/amlogic/Makefile index c0886c850bb0..91e3b9790c03 100644 --- a/drivers/phy/amlogic/Makefile +++ b/drivers/phy/amlogic/Makefile @@ -4,6 +4,7 @@ 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_G12A_USB3_PCIE) += phy-meson-g12a-usb3-pcie.o +obj-$(CONFIG_PHY_MESON_G12A_MIPI_DPHY_ANALOG) += phy-meson-g12a-mipi-dphy-analog.o obj-$(CONFIG_PHY_MESON_AXG_PCIE) += phy-meson-axg-pcie.o obj-$(CONFIG_PHY_MESON_AXG_MIPI_PCIE_ANALOG) += phy-meson-axg-mipi-pcie-analog.o obj-$(CONFIG_PHY_MESON_AXG_MIPI_DPHY) += phy-meson-axg-mipi-dphy.o diff --git a/drivers/phy/amlogic/phy-meson-g12a-mipi-dphy-analog.c b/drivers/phy/amlogic/phy-meson-g12a-mipi-dphy-analog.c new file mode 100644 index 000000000000..adfcca38a952 --- /dev/null +++ b/drivers/phy/amlogic/phy-meson-g12a-mipi-dphy-analog.c @@ -0,0 +1,177 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Meson G12A MIPI DSI Analog PHY + * + * Copyright (C) 2018 Amlogic, Inc. All rights reserved + * Copyright (C) 2020 BayLibre, SAS + * Author: Neil Armstrong + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define HHI_MIPI_CNTL0 0x00 +#define HHI_MIPI_CNTL0_DIF_REF_CTL1 GENMASK(31, 16) +#define HHI_MIPI_CNTL0_DIF_REF_CTL0 GENMASK(15, 0) + +#define HHI_MIPI_CNTL1 0x04 +#define HHI_MIPI_CNTL1_BANDGAP BIT(16) +#define HHI_MIPI_CNTL2_DIF_REF_CTL2 GENMASK(15, 0) + +#define HHI_MIPI_CNTL2 0x08 +#define HHI_MIPI_CNTL2_DIF_TX_CTL1 GENMASK(31, 16) +#define HHI_MIPI_CNTL2_CH_EN GENMASK(15, 11) +#define HHI_MIPI_CNTL2_DIF_TX_CTL0 GENMASK(10, 0) + +#define DSI_LANE_0 BIT(4) +#define DSI_LANE_1 BIT(3) +#define DSI_LANE_CLK BIT(2) +#define DSI_LANE_2 BIT(1) +#define DSI_LANE_3 BIT(0) + +struct phy_g12a_mipi_dphy_analog_priv { + struct phy *phy; + struct regmap *regmap; + struct phy_configure_opts_mipi_dphy config; +}; + +static int phy_g12a_mipi_dphy_analog_configure(struct phy *phy, + union phy_configure_opts *opts) +{ + struct phy_g12a_mipi_dphy_analog_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy); + if (ret) + return ret; + + memcpy(&priv->config, opts, sizeof(priv->config)); + + return 0; +} + +static int phy_g12a_mipi_dphy_analog_power_on(struct phy *phy) +{ + struct phy_g12a_mipi_dphy_analog_priv *priv = phy_get_drvdata(phy); + unsigned int reg; + + regmap_write(priv->regmap, HHI_MIPI_CNTL0, + FIELD_PREP(HHI_MIPI_CNTL0_DIF_REF_CTL0, 0x8) | + FIELD_PREP(HHI_MIPI_CNTL0_DIF_REF_CTL1, 0xa487)); + + regmap_write(priv->regmap, HHI_MIPI_CNTL1, + FIELD_PREP(HHI_MIPI_CNTL2_DIF_REF_CTL2, 0x2e) | + HHI_MIPI_CNTL1_BANDGAP); + + regmap_write(priv->regmap, HHI_MIPI_CNTL2, + FIELD_PREP(HHI_MIPI_CNTL2_DIF_TX_CTL0, 0x459) | + FIELD_PREP(HHI_MIPI_CNTL2_DIF_TX_CTL1, 0x2680)); + + reg = DSI_LANE_CLK; + switch (priv->config.lanes) { + case 4: + reg |= DSI_LANE_3; + fallthrough; + case 3: + reg |= DSI_LANE_2; + fallthrough; + case 2: + reg |= DSI_LANE_1; + fallthrough; + case 1: + reg |= DSI_LANE_0; + break; + default: + reg = 0; + } + + regmap_update_bits(priv->regmap, HHI_MIPI_CNTL2, + HHI_MIPI_CNTL2_CH_EN, + FIELD_PREP(HHI_MIPI_CNTL2_CH_EN, reg)); + + return 0; +} + +static int phy_g12a_mipi_dphy_analog_power_off(struct phy *phy) +{ + struct phy_g12a_mipi_dphy_analog_priv *priv = phy_get_drvdata(phy); + + regmap_write(priv->regmap, HHI_MIPI_CNTL0, 0); + regmap_write(priv->regmap, HHI_MIPI_CNTL1, 0); + regmap_write(priv->regmap, HHI_MIPI_CNTL2, 0); + + return 0; +} + +static const struct phy_ops phy_g12a_mipi_dphy_analog_ops = { + .configure = phy_g12a_mipi_dphy_analog_configure, + .power_on = phy_g12a_mipi_dphy_analog_power_on, + .power_off = phy_g12a_mipi_dphy_analog_power_off, + .owner = THIS_MODULE, +}; + +static int phy_g12a_mipi_dphy_analog_probe(struct platform_device *pdev) +{ + struct phy_provider *phy; + struct device *dev = &pdev->dev; + struct phy_g12a_mipi_dphy_analog_priv *priv; + struct device_node *np = dev->of_node; + struct regmap *map; + int ret; + + priv = devm_kmalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + /* Get the hhi system controller node */ + map = syscon_node_to_regmap(of_get_parent(dev->of_node)); + if (IS_ERR(map)) { + dev_err(dev, + "failed to get HHI regmap\n"); + return PTR_ERR(map); + } + + priv->regmap = map; + + priv->phy = devm_phy_create(dev, np, &phy_g12a_mipi_dphy_analog_ops); + if (IS_ERR(priv->phy)) { + ret = PTR_ERR(priv->phy); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to create PHY\n"); + return ret; + } + + phy_set_drvdata(priv->phy, priv); + dev_set_drvdata(dev, priv); + + phy = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + + return PTR_ERR_OR_ZERO(phy); +} + +static const struct of_device_id phy_g12a_mipi_dphy_analog_of_match[] = { + { + .compatible = "amlogic,g12a-mipi-dphy-analog", + }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, phy_g12a_mipi_dphy_analog_of_match); + +static struct platform_driver phy_g12a_mipi_dphy_analog_driver = { + .probe = phy_g12a_mipi_dphy_analog_probe, + .driver = { + .name = "phy-meson-g12a-mipi-dphy-analog", + .of_match_table = phy_g12a_mipi_dphy_analog_of_match, + }, +}; +module_platform_driver(phy_g12a_mipi_dphy_analog_driver); + +MODULE_AUTHOR("Neil Armstrong "); +MODULE_DESCRIPTION("Meson G12A MIPI Analog D-PHY driver"); +MODULE_LICENSE("GPL v2");