Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / mmc / host / sdhci-of-hlwd.c

diff --git a/kernel/drivers/mmc/host/sdhci-of-hlwd.c b/kernel/drivers/mmc/host/sdhci-of-hlwd.c
new file mode 100644 (file)
index 0000000..4079a96
--- /dev/null
+++ b/kernel/drivers/mmc/host/sdhci-of-hlwd.c
@@ -0,0 +1,98 @@
+/*
+ * drivers/mmc/host/sdhci-of-hlwd.c
+ *
+ * Nintendo Wii Secure Digital Host Controller Interface.
+ * Copyright (C) 2009 The GameCube Linux Team
+ * Copyright (C) 2009 Albert Herranz
+ *
+ * Based on sdhci-of-esdhc.c
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2009 MontaVista Software, Inc.
+ *
+ * Authors: Xiaobo Xie <X.Xie@freescale.com>
+ *         Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * 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/delay.h>
+#include <linux/module.h>
+#include <linux/mmc/host.h>
+#include "sdhci-pltfm.h"
+
+/*
+ * Ops and quirks for the Nintendo Wii SDHCI controllers.
+ */
+
+/*
+ * We need a small delay after each write, or things go horribly wrong.
+ */
+#define SDHCI_HLWD_WRITE_DELAY 5 /* usecs */
+
+static void sdhci_hlwd_writel(struct sdhci_host *host, u32 val, int reg)
+{
+       sdhci_be32bs_writel(host, val, reg);
+       udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+static void sdhci_hlwd_writew(struct sdhci_host *host, u16 val, int reg)
+{
+       sdhci_be32bs_writew(host, val, reg);
+       udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+static void sdhci_hlwd_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+       sdhci_be32bs_writeb(host, val, reg);
+       udelay(SDHCI_HLWD_WRITE_DELAY);
+}
+
+static const struct sdhci_ops sdhci_hlwd_ops = {
+       .read_l = sdhci_be32bs_readl,
+       .read_w = sdhci_be32bs_readw,
+       .read_b = sdhci_be32bs_readb,
+       .write_l = sdhci_hlwd_writel,
+       .write_w = sdhci_hlwd_writew,
+       .write_b = sdhci_hlwd_writeb,
+       .set_clock = sdhci_set_clock,
+       .set_bus_width = sdhci_set_bus_width,
+       .reset = sdhci_reset,
+       .set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
+static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
+       .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
+                 SDHCI_QUIRK_32BIT_DMA_SIZE,
+       .ops = &sdhci_hlwd_ops,
+};
+
+static int sdhci_hlwd_probe(struct platform_device *pdev)
+{
+       return sdhci_pltfm_register(pdev, &sdhci_hlwd_pdata, 0);
+}
+
+static const struct of_device_id sdhci_hlwd_of_match[] = {
+       { .compatible = "nintendo,hollywood-sdhci" },
+       { }
+};
+MODULE_DEVICE_TABLE(of, sdhci_hlwd_of_match);
+
+static struct platform_driver sdhci_hlwd_driver = {
+       .driver = {
+               .name = "sdhci-hlwd",
+               .of_match_table = sdhci_hlwd_of_match,
+               .pm = SDHCI_PLTFM_PMOPS,
+       },
+       .probe = sdhci_hlwd_probe,
+       .remove = sdhci_pltfm_unregister,
+};
+
+module_platform_driver(sdhci_hlwd_driver);
+
+MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
+MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
+MODULE_LICENSE("GPL v2");