1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Synopsys DesignWare Multimedia Card PCI Interface driver
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <linux/interrupt.h>
9*4882a593Smuzhiyun #include <linux/module.h>
10*4882a593Smuzhiyun #include <linux/io.h>
11*4882a593Smuzhiyun #include <linux/irq.h>
12*4882a593Smuzhiyun #include <linux/pci.h>
13*4882a593Smuzhiyun #include <linux/pm_runtime.h>
14*4882a593Smuzhiyun #include <linux/slab.h>
15*4882a593Smuzhiyun #include <linux/mmc/host.h>
16*4882a593Smuzhiyun #include <linux/mmc/mmc.h>
17*4882a593Smuzhiyun #include "dw_mmc.h"
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define PCI_BAR_NO 2
20*4882a593Smuzhiyun #define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
21*4882a593Smuzhiyun #define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
22*4882a593Smuzhiyun /* Defining the Capabilities */
23*4882a593Smuzhiyun #define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
24*4882a593Smuzhiyun MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
25*4882a593Smuzhiyun MMC_CAP_SDIO_IRQ)
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun static struct dw_mci_board pci_board_data = {
28*4882a593Smuzhiyun .caps = DW_MCI_CAPABILITIES,
29*4882a593Smuzhiyun .bus_hz = 33 * 1000 * 1000,
30*4882a593Smuzhiyun .detect_delay_ms = 200,
31*4882a593Smuzhiyun .fifo_depth = 32,
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
dw_mci_pci_probe(struct pci_dev * pdev,const struct pci_device_id * entries)34*4882a593Smuzhiyun static int dw_mci_pci_probe(struct pci_dev *pdev,
35*4882a593Smuzhiyun const struct pci_device_id *entries)
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun struct dw_mci *host;
38*4882a593Smuzhiyun int ret;
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun ret = pcim_enable_device(pdev);
41*4882a593Smuzhiyun if (ret)
42*4882a593Smuzhiyun return ret;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
45*4882a593Smuzhiyun if (!host)
46*4882a593Smuzhiyun return -ENOMEM;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun host->irq = pdev->irq;
49*4882a593Smuzhiyun host->irq_flags = IRQF_SHARED;
50*4882a593Smuzhiyun host->dev = &pdev->dev;
51*4882a593Smuzhiyun host->pdata = &pci_board_data;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
54*4882a593Smuzhiyun if (ret)
55*4882a593Smuzhiyun return ret;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun pci_set_master(pdev);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun ret = dw_mci_probe(host);
62*4882a593Smuzhiyun if (ret)
63*4882a593Smuzhiyun return ret;
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun pci_set_drvdata(pdev, host);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun return 0;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
dw_mci_pci_remove(struct pci_dev * pdev)70*4882a593Smuzhiyun static void dw_mci_pci_remove(struct pci_dev *pdev)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun struct dw_mci *host = pci_get_drvdata(pdev);
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun dw_mci_remove(host);
75*4882a593Smuzhiyun }
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
78*4882a593Smuzhiyun SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
79*4882a593Smuzhiyun pm_runtime_force_resume)
80*4882a593Smuzhiyun SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
81*4882a593Smuzhiyun dw_mci_runtime_resume,
82*4882a593Smuzhiyun NULL)
83*4882a593Smuzhiyun };
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun static const struct pci_device_id dw_mci_pci_id[] = {
86*4882a593Smuzhiyun { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
87*4882a593Smuzhiyun {}
88*4882a593Smuzhiyun };
89*4882a593Smuzhiyun MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun static struct pci_driver dw_mci_pci_driver = {
92*4882a593Smuzhiyun .name = "dw_mmc_pci",
93*4882a593Smuzhiyun .id_table = dw_mci_pci_id,
94*4882a593Smuzhiyun .probe = dw_mci_pci_probe,
95*4882a593Smuzhiyun .remove = dw_mci_pci_remove,
96*4882a593Smuzhiyun .driver = {
97*4882a593Smuzhiyun .pm = &dw_mci_pci_dev_pm_ops,
98*4882a593Smuzhiyun },
99*4882a593Smuzhiyun };
100*4882a593Smuzhiyun
101*4882a593Smuzhiyun module_pci_driver(dw_mci_pci_driver);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
104*4882a593Smuzhiyun MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
105*4882a593Smuzhiyun MODULE_LICENSE("GPL v2");
106