summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/mmc/host/dw_mmc-pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/drivers/mmc/host/dw_mmc-pci.c')
-rw-r--r--kernel/drivers/mmc/host/dw_mmc-pci.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/kernel/drivers/mmc/host/dw_mmc-pci.c b/kernel/drivers/mmc/host/dw_mmc-pci.c
new file mode 100644
index 000000000..4c69fbd29
--- /dev/null
+++ b/kernel/drivers/mmc/host/dw_mmc-pci.c
@@ -0,0 +1,122 @@
+/*
+ * Synopsys DesignWare Multimedia Card PCI Interface driver
+ *
+ * Copyright (C) 2012 Vayavya Labs Pvt. Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/dw_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 = {
+ .num_slots = 1,
+ .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);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int dw_mci_pci_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct dw_mci *host = pci_get_drvdata(pdev);
+
+ return dw_mci_suspend(host);
+}
+
+static int dw_mci_pci_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct dw_mci *host = pci_get_drvdata(pdev);
+
+ return dw_mci_resume(host);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume);
+
+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_pmops
+ },
+};
+
+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");