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kernel
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linux
ufs: add TC G210 platform driver
This patch adds a glue platform driver for the Synopsys G210 Test Chip.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
authored by
Joao Pinto
and committed by
Martin K. Petersen
fc040a3f
947e7013
+148
+26
Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt
+26
Documentation/devicetree/bindings/ufs/tc-dwc-g210-pltfrm.txt
···
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* Universal Flash Storage (UFS) DesignWare Host Controller
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DWC_UFS nodes are defined to describe on-chip UFS host controllers and MPHY.
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Each UFS controller instance should have its own node.
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Required properties:
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- compatible : compatible list must contain the PHY type & version:
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"snps,g210-tc-6.00-20bit"
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"snps,g210-tc-6.00-40bit"
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complemented with the Controller IP version:
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"snps,dwc-ufshcd-1.40a"
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complemented with the JEDEC version:
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"jedec,ufs-1.1"
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"jedec,ufs-2.0"
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- reg : <registers mapping>
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- interrupts : <interrupt mapping for UFS host controller IRQ>
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Example for a setup using a 1.40a DWC Controller with a 6.00 G210 40-bit TC:
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dwc-ufs@d0000000 {
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compatible = "snps,g210-tc-6.00-40bit",
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"snps,dwc-ufshcd-1.40a",
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"jedec,ufs-2.0";
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reg = < 0xd0000000 0x10000 >;
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interrupts = < 24 >;
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};
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drivers/scsi/ufs/Kconfig
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drivers/scsi/ufs/Kconfig
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If unsure, say N.
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config SCSI_UFS_DWC_TC_PLATFORM
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tristate "DesignWare platform support using a G210 Test Chip"
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depends on SCSI_UFSHCD_PLATFORM
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---help---
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Synopsys Test Chip is a PHY for prototyping purposes.
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If unsure, say N.
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config SCSI_UFS_QCOM
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tristate "QCOM specific hooks to UFS controller platform driver"
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depends on SCSI_UFSHCD_PLATFORM && ARCH_QCOM
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drivers/scsi/ufs/Makefile
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drivers/scsi/ufs/Makefile
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drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
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drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
···
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/*
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* Synopsys G210 Test Chip driver
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*
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* Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
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*
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* Authors: Joao Pinto <jpinto@synopsys.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/delay.h>
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#include "ufshcd-pltfrm.h"
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#include "ufshcd-dwc.h"
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#include "tc-dwc-g210.h"
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/**
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* UFS DWC specific variant operations
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*/
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static struct ufs_hba_variant_ops tc_dwc_g210_20bit_pltfm_hba_vops = {
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.name = "tc-dwc-g210-pltfm",
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.link_startup_notify = ufshcd_dwc_link_startup_notify,
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.phy_initialization = tc_dwc_g210_config_20_bit,
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};
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static struct ufs_hba_variant_ops tc_dwc_g210_40bit_pltfm_hba_vops = {
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.name = "tc-dwc-g210-pltfm",
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.link_startup_notify = ufshcd_dwc_link_startup_notify,
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.phy_initialization = tc_dwc_g210_config_40_bit,
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};
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static const struct of_device_id tc_dwc_g210_pltfm_match[] = {
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{
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.compatible = "snps,g210-tc-6.00-20bit",
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.data = &tc_dwc_g210_20bit_pltfm_hba_vops,
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},
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{
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.compatible = "snps,g210-tc-6.00-40bit",
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.data = &tc_dwc_g210_40bit_pltfm_hba_vops,
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},
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{ },
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};
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MODULE_DEVICE_TABLE(of, tc_dwc_g210_pltfm_match);
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/**
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* tc_dwc_g210_pltfm_probe()
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* @pdev: pointer to platform device structure
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*
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*/
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static int tc_dwc_g210_pltfm_probe(struct platform_device *pdev)
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{
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int err;
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const struct of_device_id *of_id;
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struct ufs_hba_variant_ops *vops;
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struct device *dev = &pdev->dev;
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of_id = of_match_node(tc_dwc_g210_pltfm_match, dev->of_node);
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vops = (struct ufs_hba_variant_ops *)of_id->data;
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/* Perform generic probe */
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err = ufshcd_pltfrm_init(pdev, vops);
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if (err)
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dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
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return err;
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}
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/**
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* tc_dwc_g210_pltfm_remove()
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* @pdev: pointer to platform device structure
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*
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*/
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static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
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{
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struct ufs_hba *hba = platform_get_drvdata(pdev);
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pm_runtime_get_sync(&(pdev)->dev);
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ufshcd_remove(hba);
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return 0;
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}
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static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
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.suspend = ufshcd_pltfrm_suspend,
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.resume = ufshcd_pltfrm_resume,
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.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
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.runtime_resume = ufshcd_pltfrm_runtime_resume,
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.runtime_idle = ufshcd_pltfrm_runtime_idle,
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};
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static struct platform_driver tc_dwc_g210_pltfm_driver = {
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.probe = tc_dwc_g210_pltfm_probe,
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.remove = tc_dwc_g210_pltfm_remove,
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.shutdown = ufshcd_pltfrm_shutdown,
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.driver = {
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.name = "tc-dwc-g210-pltfm",
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.pm = &tc_dwc_g210_pltfm_pm_ops,
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.of_match_table = of_match_ptr(tc_dwc_g210_pltfm_match),
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},
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};
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module_platform_driver(tc_dwc_g210_pltfm_driver);
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MODULE_ALIAS("platform:tc-dwc-g210-pltfm");
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MODULE_DESCRIPTION("Synopsys Test Chip G210 platform glue driver");
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MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
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MODULE_LICENSE("Dual BSD/GPL");