Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/drivers/mmc/host/dw_mmc-pltfm.c b/kernel/drivers/mmc/host/dw_mmc-pltfm.c
new file mode 100644 (file)
index 0000000..ec6dbcd
--- /dev/null
+++ b/kernel/drivers/mmc/host/dw_mmc-pltfm.c
@@ -0,0 +1,140 @@
+/*
+ * Synopsys DesignWare Multimedia Card Interface driver
+ *
+ * Copyright (C) 2009 NXP Semiconductors
+ * Copyright (C) 2009, 2010 Imagination Technologies 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/err.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/dw_mmc.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+
+#include "dw_mmc.h"
+#include "dw_mmc-pltfm.h"
+
+static void dw_mci_pltfm_prepare_command(struct dw_mci *host, u32 *cmdr)
+{
+       *cmdr |= SDMMC_CMD_USE_HOLD_REG;
+}
+
+static const struct dw_mci_drv_data socfpga_drv_data = {
+       .prepare_command        = dw_mci_pltfm_prepare_command,
+};
+
+static const struct dw_mci_drv_data pistachio_drv_data = {
+       .prepare_command        = dw_mci_pltfm_prepare_command,
+};
+
+int dw_mci_pltfm_register(struct platform_device *pdev,
+                         const struct dw_mci_drv_data *drv_data)
+{
+       struct dw_mci *host;
+       struct resource *regs;
+
+       host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
+       if (!host)
+               return -ENOMEM;
+
+       host->irq = platform_get_irq(pdev, 0);
+       if (host->irq < 0)
+               return host->irq;
+
+       host->drv_data = drv_data;
+       host->dev = &pdev->dev;
+       host->irq_flags = 0;
+       host->pdata = pdev->dev.platform_data;
+
+       regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+       host->regs = devm_ioremap_resource(&pdev->dev, regs);
+       if (IS_ERR(host->regs))
+               return PTR_ERR(host->regs);
+
+       platform_set_drvdata(pdev, host);
+       return dw_mci_probe(host);
+}
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
+
+#ifdef CONFIG_PM_SLEEP
+/*
+ * TODO: we should probably disable the clock to the card in the suspend path.
+ */
+static int dw_mci_pltfm_suspend(struct device *dev)
+{
+       struct dw_mci *host = dev_get_drvdata(dev);
+
+       return dw_mci_suspend(host);
+}
+
+static int dw_mci_pltfm_resume(struct device *dev)
+{
+       struct dw_mci *host = dev_get_drvdata(dev);
+
+       return dw_mci_resume(host);
+}
+#endif /* CONFIG_PM_SLEEP */
+
+SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
+
+static const struct of_device_id dw_mci_pltfm_match[] = {
+       { .compatible = "snps,dw-mshc", },
+       { .compatible = "altr,socfpga-dw-mshc",
+               .data = &socfpga_drv_data },
+       { .compatible = "img,pistachio-dw-mshc",
+               .data = &pistachio_drv_data },
+       {},
+};
+MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
+
+static int dw_mci_pltfm_probe(struct platform_device *pdev)
+{
+       const struct dw_mci_drv_data *drv_data = NULL;
+       const struct of_device_id *match;
+
+       if (pdev->dev.of_node) {
+               match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
+               drv_data = match->data;
+       }
+
+       return dw_mci_pltfm_register(pdev, drv_data);
+}
+
+int dw_mci_pltfm_remove(struct platform_device *pdev)
+{
+       struct dw_mci *host = platform_get_drvdata(pdev);
+
+       dw_mci_remove(host);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
+
+static struct platform_driver dw_mci_pltfm_driver = {
+       .probe          = dw_mci_pltfm_probe,
+       .remove         = dw_mci_pltfm_remove,
+       .driver         = {
+               .name           = "dw_mmc",
+               .of_match_table = dw_mci_pltfm_match,
+               .pm             = &dw_mci_pltfm_pmops,
+       },
+};
+
+module_platform_driver(dw_mci_pltfm_driver);
+
+MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
+MODULE_AUTHOR("NXP Semiconductor VietNam");
+MODULE_AUTHOR("Imagination Technologies Ltd");
+MODULE_LICENSE("GPL v2");