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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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53b2728811
Let's migrate it to use runtime PM and remove the system PM callback from this driver. With this patch, it could handle system PM properly and could also use runtime PM if we enable it. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
/*
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* Synopsys DesignWare Multimedia Card PCI Interface driver
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*
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* Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/pci.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/mmc.h>
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#include <linux/mmc/dw_mmc.h>
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#include "dw_mmc.h"
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#define PCI_BAR_NO 2
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#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
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#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
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/* Defining the Capabilities */
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#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
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MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
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MMC_CAP_SDIO_IRQ)
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static struct dw_mci_board pci_board_data = {
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.num_slots = 1,
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.caps = DW_MCI_CAPABILITIES,
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.bus_hz = 33 * 1000 * 1000,
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.detect_delay_ms = 200,
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.fifo_depth = 32,
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};
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static int dw_mci_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *entries)
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{
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struct dw_mci *host;
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int ret;
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
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if (!host)
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return -ENOMEM;
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host->irq = pdev->irq;
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host->irq_flags = IRQF_SHARED;
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host->dev = &pdev->dev;
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host->pdata = &pci_board_data;
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ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
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if (ret)
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return ret;
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host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
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pci_set_master(pdev);
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ret = dw_mci_probe(host);
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if (ret)
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return ret;
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pci_set_drvdata(pdev, host);
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return 0;
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}
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static void dw_mci_pci_remove(struct pci_dev *pdev)
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{
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struct dw_mci *host = pci_get_drvdata(pdev);
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dw_mci_remove(host);
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}
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static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
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pm_runtime_force_resume)
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SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
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dw_mci_runtime_resume,
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NULL)
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};
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static const struct pci_device_id dw_mci_pci_id[] = {
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{ PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
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{}
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};
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MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
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static struct pci_driver dw_mci_pci_driver = {
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.name = "dw_mmc_pci",
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.id_table = dw_mci_pci_id,
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.probe = dw_mci_pci_probe,
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.remove = dw_mci_pci_remove,
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.driver = {
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.pm = &dw_mci_pci_dev_pm_ops,
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},
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};
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module_pci_driver(dw_mci_pci_driver);
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MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
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MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
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MODULE_LICENSE("GPL v2");
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