From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758331AbcCaS6m (ORCPT ); Thu, 31 Mar 2016 14:58:42 -0400 Received: from smtprelay2.synopsys.com ([198.182.60.111]:55335 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758229AbcCaS6L (ORCPT ); Thu, 31 Mar 2016 14:58:11 -0400 From: Joao Pinto To: tomas.winkler@intel.com Cc: vinholikatti@gmail.com, julian.calaby@gmail.com, akinobu.mita@gmail.com, hch@infradead.org, gbroner@codeaurora.org, subhashj@codeaurora.org, CARLOS.PALMINHA@synopsys.com, ijc+devicetree@hellion.org.uk, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, arnd@arndb.de, mark.rutland@arm.com, Joao Pinto Subject: [PATCH v12 9/9] add TC G210 pci driver Date: Thu, 31 Mar 2016 19:57:22 +0100 Message-Id: X-Mailer: git-send-email 1.8.1.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds a glue pci driver for the Synopsys G210 Test Chip. Signed-off-by: Joao Pinto --- Changes v10->v12 (Tomas Winkler): - custom_phy_initialization replaced by phy_initialization Changes v10->v11 (Arnd Bergmann): - tc_type is now initialized to TC_G210_INV - probe function checks if the test chip version is specified Changes v0->v10: - This patch only appeared in v10 drivers/scsi/ufs/Kconfig | 9 ++ drivers/scsi/ufs/Makefile | 1 + drivers/scsi/ufs/tc-dwc-g210-pci.c | 181 +++++++++++++++++++++++++++++++++++++ 3 files changed, 191 insertions(+) create mode 100644 drivers/scsi/ufs/tc-dwc-g210-pci.c diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig index 5cfa87b..5a3fde7 100644 --- a/drivers/scsi/ufs/Kconfig +++ b/drivers/scsi/ufs/Kconfig @@ -99,3 +99,12 @@ config SCSI_UFS_DWC_TC_PLATFORM Synopsys Test Chip is a PHY for prototyping purposes. If unsure, say N." + +config SCSI_UFS_DWC_TC_PCI + tristate "DesignWare pci support using a G210 Test Chip" + depends on SCSI_UFSHCD_PCI + select SCSI_UFS_DWC_TC + ---help--- + Synopsys Test Chip is a PHY for prototyping purposes. + + If unsure, say N." diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile index a977fe0..5303d85 100644 --- a/drivers/scsi/ufs/Makefile +++ b/drivers/scsi/ufs/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_SCSI_UFS_DWC) += ufshcd-dwc.o obj-$(CONFIG_SCSI_UFS_DWC_TC) += tc-dwc-g210.o obj-$(CONFIG_SCSI_UFS_DWC_TC_PLATFORM) += tc-dwc-g210-pltfrm.o +obj-$(CONFIG_SCSI_UFS_DWC_TC_PCI) += tc-dwc-g210-pci.o obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c new file mode 100644 index 0000000..0667c76 --- /dev/null +++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c @@ -0,0 +1,181 @@ +/* + * Synopsys G210 Test Chip driver + * + * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com) + * + * Authors: Joao Pinto + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "ufshcd.h" +#include "ufshcd-dwc.h" +#include "tc-dwc-g210.h" + +#include +#include + +/* Test Chip type expected values */ +#define TC_G210_20BIT 20 +#define TC_G210_40BIT 40 +#define TC_G210_INV 0 + +static int tc_type = TC_G210_INV; +module_param(tc_type, int, 0); +MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)"); + +static int tc_dwc_g210_pci_suspend(struct device *dev) +{ + return ufshcd_system_suspend(dev_get_drvdata(dev)); +} + +static int tc_dwc_g210_pci_resume(struct device *dev) +{ + return ufshcd_system_resume(dev_get_drvdata(dev)); +} + +static int tc_dwc_g210_pci_runtime_suspend(struct device *dev) +{ + return ufshcd_runtime_suspend(dev_get_drvdata(dev)); +} + +static int tc_dwc_g210_pci_runtime_resume(struct device *dev) +{ + return ufshcd_runtime_resume(dev_get_drvdata(dev)); +} + +static int tc_dwc_g210_pci_runtime_idle(struct device *dev) +{ + return ufshcd_runtime_idle(dev_get_drvdata(dev)); +} + +/** + * struct ufs_hba_dwc_vops - UFS DWC specific variant operations + */ +static struct ufs_hba_variant_ops tc_dwc_g210_pci_hba_vops = { + .name = "tc-dwc-g210-pci", + .link_startup_notify = ufshcd_dwc_link_startup_notify, +}; + +/** + * tc_dwc_g210_pci_shutdown - main function to put the controller in reset state + * @pdev: pointer to PCI device handle + */ +static void tc_dwc_g210_pci_shutdown(struct pci_dev *pdev) +{ + ufshcd_shutdown((struct ufs_hba *)pci_get_drvdata(pdev)); +} + +/** + * tc_dwc_g210_pci_remove - de-allocate PCI/SCSI host and host memory space + * data structure memory + * @pdev - pointer to PCI handle + */ +static void tc_dwc_g210_pci_remove(struct pci_dev *pdev) +{ + struct ufs_hba *hba = pci_get_drvdata(pdev); + + pm_runtime_forbid(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + ufshcd_remove(hba); +} + +/** + * tc_dwc_g210_pci_probe - probe routine of the driver + * @pdev: pointer to PCI device handle + * @id: PCI device id + * + * Returns 0 on success, non-zero value on failure + */ +static int +tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct ufs_hba *hba; + void __iomem *mmio_base; + int err; + + /* Check Test Chip type and set the specific setup routine */ + if (tc_type == TC_G210_20BIT) { + tc_dwc_g210_pci_hba_vops.phy_initialization = + tc_dwc_g210_config_20_bit; + } else if (tc_type == TC_G210_40BIT) { + tc_dwc_g210_pci_hba_vops.phy_initialization = + tc_dwc_g210_config_40_bit; + } else { + dev_err(&pdev->dev, "test chip version not specified\n"); + return -EPERM; + } + + err = pcim_enable_device(pdev); + if (err) { + dev_err(&pdev->dev, "pcim_enable_device failed\n"); + return err; + } + + pci_set_master(pdev); + + err = pcim_iomap_regions(pdev, 1 << 0, UFSHCD); + if (err < 0) { + dev_err(&pdev->dev, "request and iomap failed\n"); + return err; + } + + mmio_base = pcim_iomap_table(pdev)[0]; + + err = ufshcd_alloc_host(&pdev->dev, &hba); + if (err) { + dev_err(&pdev->dev, "Allocation failed\n"); + return err; + } + + INIT_LIST_HEAD(&hba->clk_list_head); + + hba->vops = &tc_dwc_g210_pci_hba_vops; + + err = ufshcd_init(hba, mmio_base, pdev->irq); + if (err) { + dev_err(&pdev->dev, "Initialization failed\n"); + return err; + } + + pci_set_drvdata(pdev, hba); + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_allow(&pdev->dev); + + return 0; +} + +static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = { + .suspend = tc_dwc_g210_pci_suspend, + .resume = tc_dwc_g210_pci_resume, + .runtime_suspend = tc_dwc_g210_pci_runtime_suspend, + .runtime_resume = tc_dwc_g210_pci_runtime_resume, + .runtime_idle = tc_dwc_g210_pci_runtime_idle, +}; + +static const struct pci_device_id tc_dwc_g210_pci_tbl[] = { + { PCI_VENDOR_ID_SYNOPSYS, 0xB101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { PCI_VENDOR_ID_SYNOPSYS, 0xB102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { } /* terminate list */ +}; + +MODULE_DEVICE_TABLE(pci, tc_dwc_g210_pci_tbl); + +static struct pci_driver tc_dwc_g210_pci_driver = { + .name = UFSHCD, + .id_table = tc_dwc_g210_pci_tbl, + .probe = tc_dwc_g210_pci_probe, + .remove = tc_dwc_g210_pci_remove, + .shutdown = tc_dwc_g210_pci_shutdown, + .driver = { + .pm = &tc_dwc_g210_pci_pm_ops + }, +}; + +module_pci_driver(tc_dwc_g210_pci_driver); + +MODULE_AUTHOR("Joao Pinto "); +MODULE_DESCRIPTION("Synopsys Test Chip G210 PCI glue driver"); +MODULE_LICENSE("Dual BSD/GPL"); -- 1.8.1.5