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path: root/drivers/mmc/host/dw_mmc-pci.c
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Diffstat (limited to 'drivers/mmc/host/dw_mmc-pci.c')
-rw-r--r--drivers/mmc/host/dw_mmc-pci.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c
new file mode 100644
index 0000000000..e7ab699f48
--- /dev/null
+++ b/drivers/mmc/host/dw_mmc-pci.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Synopsys DesignWare Multimedia Card PCI Interface driver
+ *
+ * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include "dw_mmc.h"
+
+#define PCI_BAR_NO 2
+#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700
+#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107
+/* Defining the Capabilities */
+#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\
+ MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\
+ MMC_CAP_SDIO_IRQ)
+
+static struct dw_mci_board pci_board_data = {
+ .caps = DW_MCI_CAPABILITIES,
+ .bus_hz = 33 * 1000 * 1000,
+ .detect_delay_ms = 200,
+ .fifo_depth = 32,
+};
+
+static int dw_mci_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *entries)
+{
+ struct dw_mci *host;
+ int ret;
+
+ ret = pcim_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
+ if (!host)
+ return -ENOMEM;
+
+ host->irq = pdev->irq;
+ host->irq_flags = IRQF_SHARED;
+ host->dev = &pdev->dev;
+ host->pdata = &pci_board_data;
+
+ ret = pcim_iomap_regions(pdev, 1 << PCI_BAR_NO, pci_name(pdev));
+ if (ret)
+ return ret;
+
+ host->regs = pcim_iomap_table(pdev)[PCI_BAR_NO];
+
+ pci_set_master(pdev);
+
+ ret = dw_mci_probe(host);
+ if (ret)
+ return ret;
+
+ pci_set_drvdata(pdev, host);
+
+ return 0;
+}
+
+static void dw_mci_pci_remove(struct pci_dev *pdev)
+{
+ struct dw_mci *host = pci_get_drvdata(pdev);
+
+ dw_mci_remove(host);
+}
+
+static const struct dev_pm_ops dw_mci_pci_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
+ dw_mci_runtime_resume,
+ NULL)
+};
+
+static const struct pci_device_id dw_mci_pci_id[] = {
+ { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) },
+ {}
+};
+MODULE_DEVICE_TABLE(pci, dw_mci_pci_id);
+
+static struct pci_driver dw_mci_pci_driver = {
+ .name = "dw_mmc_pci",
+ .id_table = dw_mci_pci_id,
+ .probe = dw_mci_pci_probe,
+ .remove = dw_mci_pci_remove,
+ .driver = {
+ .pm = &dw_mci_pci_dev_pm_ops,
+ },
+};
+
+module_pci_driver(dw_mci_pci_driver);
+
+MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver");
+MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>");
+MODULE_LICENSE("GPL v2");