Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752370AbbEDRid (ORCPT ); Mon, 4 May 2015 13:38:33 -0400 Received: from mail-qg0-f74.google.com ([209.85.192.74]:34383 "EHLO mail-qg0-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752113AbbEDRgw (ORCPT ); Mon, 4 May 2015 13:36:52 -0400 From: Andrew Bresticker To: Stephen Warren , Thierry Reding , Alexandre Courbot Cc: devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Bresticker , Jon Hunter , Samuel Ortiz , Lee Jones Subject: [PATCH v8 5/9] mfd: Add driver for NVIDIA Tegra XUSB Date: Mon, 4 May 2015 10:36:38 -0700 Message-Id: <1430761002-9327-6-git-send-email-abrestic@chromium.org> X-Mailer: git-send-email 2.2.0.rc0.207.ga3a616c In-Reply-To: <1430761002-9327-1-git-send-email-abrestic@chromium.org> References: <1430761002-9327-1-git-send-email-abrestic@chromium.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4134 Lines: 138 Add an MFD driver for the XUSB host complex found on NVIDIA Tegra124 and later SoCs. Signed-off-by: Andrew Bresticker Cc: Samuel Ortiz Cc: Lee Jones --- Changes from v7: - Have child nodes get non-shared memory and interrupts from DT. - Use of_platform_populate rather than mfd_add_devices. - Get rid of struct tegra_xusb. New for v7. --- drivers/mfd/Kconfig | 7 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/tegra-xusb.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 83 insertions(+) create mode 100644 drivers/mfd/tegra-xusb.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index d5ad04d..61872b4 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1430,6 +1430,13 @@ config MFD_STW481X in various ST Microelectronics and ST-Ericsson embedded Nomadik series. +config MFD_TEGRA_XUSB + tristate "NVIDIA Tegra XUSB" + depends on ARCH_TEGRA + select MFD_CORE + help + Support for the XUSB complex found on NVIDIA Tegra124 and later SoCs. + menu "Multimedia Capabilities Port drivers" depends on ARCH_SA1100 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 0e5cfeb..7588caf 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -181,6 +181,7 @@ obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o obj-$(CONFIG_MFD_DLN2) += dln2.o obj-$(CONFIG_MFD_RT5033) += rt5033.o obj-$(CONFIG_MFD_SKY81452) += sky81452.o +obj-$(CONFIG_MFD_TEGRA_XUSB) += tegra-xusb.o intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o diff --git a/drivers/mfd/tegra-xusb.c b/drivers/mfd/tegra-xusb.c new file mode 100644 index 0000000..e11fa23 --- /dev/null +++ b/drivers/mfd/tegra-xusb.c @@ -0,0 +1,75 @@ +/* + * NVIDIA Tegra XUSB MFD driver + * + * Copyright (C) 2015 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct of_device_id tegra_xusb_of_match[] = { + { .compatible = "nvidia,tegra124-xusb", }, + {}, +}; +MODULE_DEVICE_TABLE(of, tegra_xusb_of_match); + +static struct regmap_config tegra_fpci_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static int tegra_xusb_probe(struct platform_device *pdev) +{ + struct resource *res; + struct regmap *fpci_regs; + void __iomem *fpci_base; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + fpci_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(fpci_base)) + return PTR_ERR(fpci_base); + + tegra_fpci_regmap_config.max_register = res->end - res->start - 3; + fpci_regs = devm_regmap_init_mmio(&pdev->dev, fpci_base, + &tegra_fpci_regmap_config); + if (IS_ERR(fpci_regs)) { + ret = PTR_ERR(fpci_regs); + dev_err(&pdev->dev, "Failed to init regmap: %d\n", ret); + return ret; + } + platform_set_drvdata(pdev, fpci_regs); + + ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); + if (ret) { + dev_err(&pdev->dev, "Failed to add sub-devices: %d\n", ret); + return ret; + } + + return 0; +} + +static struct platform_driver tegra_xusb_driver = { + .probe = tegra_xusb_probe, + .driver = { + .name = "tegra-xusb", + .of_match_table = tegra_xusb_of_match, + }, +}; +module_platform_driver(tegra_xusb_driver); + +MODULE_DESCRIPTION("NVIDIA Tegra XUSB MFD"); +MODULE_AUTHOR("Andrew Bresticker "); +MODULE_LICENSE("GPL v2"); -- 2.2.0.rc0.207.ga3a616c -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/