Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / mmc / host / dw_mmc-pci.c

diff --git a/kernel/drivers/mmc/host/dw_mmc-pci.c b/kernel/drivers/mmc/host/dw_mmc-pci.c
new file mode 100644 (file)
index 0000000..4c69fbd
--- /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");