From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 drivers/mmc/host/dw_mmc-pltfm.c | 140 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 drivers/mmc/host/dw_mmc-pltfm.c

(limited to 'drivers/mmc/host/dw_mmc-pltfm.c')

diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c
new file mode 100644
index 000000000..ec6dbcdec
--- /dev/null
+++ b/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");
-- 
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