Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>
---
MAINTAINERS | 7 ++
drivers/mmc/host/Kconfig | 11 ++++
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/sdhci-brcmstb.c | 137 +++++++++++++++++++++++++++++++++++++++
4 files changed, 156 insertions(+)
create mode 100644 drivers/mmc/host/sdhci-brcmstb.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 7304d2e..e5528cf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10187,6 +10187,13 @@ F: tools/testing/selftests/seccomp/*
K: \bsecure_computing
K: \bTIF_SECCOMP\b
+SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) Broadcom BRCMSTB DRIVER
+M: Al Cooper <alcooperx@xxxxxxxxx>
+L: linux-mmc@xxxxxxxxxxxxxxx
+L: bcm-kernel-feedback-list@xxxxxxxxxxxx
+S: Maintained
+F: drivers/mmc/host/sdhci-brcmstb*
+
SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) SAMSUNG DRIVER
M: Ben Dooks <ben-linux@xxxxxxxxx>
M: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 0aa484c..1038c9a 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -798,3 +798,14 @@ config MMC_SDHCI_MICROCHIP_PIC32
If you have a controller with this interface, say Y or M here.
If unsure, say N.
+config MMC_SDHCI_BRCMSTB
+ tristate "Broadcom SDIO/SD/MMC support"
+ depends on ARCH_BRCMSTB || BMIPS_GENERIC
+ depends on MMC_SDHCI_PLTFM
+ default y
+ select MMC_SDHCI_IO_ACCESSORS
+ help
+ This selects support for the SDIO/SD/MMC Host Controller on
+ Broadcom STB SoCs.
+
+ If unsure, say Y.
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index af918d2..2075c11 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_MMC_SDHCI_IPROC) += sdhci-iproc.o
obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o
obj-$(CONFIG_MMC_SDHCI_ST) += sdhci-st.o
obj-$(CONFIG_MMC_SDHCI_MICROCHIP_PIC32) += sdhci-pic32.o
+obj-$(CONFIG_MMC_SDHCI_BRCMSTB) += sdhci-brcmstb.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
new file mode 100644
index 0000000..38882ef
--- /dev/null
+++ b/drivers/mmc/host/sdhci-brcmstb.c
@@ -0,0 +1,137 @@
+/*
+ * sdhci-brcmstb.c Support for SDHCI on Broadcom BRCMSTB SoC's
+ *
+ * Copyright (C) 2015 Broadcom Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/mmc/host.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include "sdhci-pltfm.h"
+
+#ifdef CONFIG_PM_SLEEP
+
+static int sdhci_brcmstb_suspend(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int res;
+
+ res = sdhci_suspend_host(host);
+ if (res)
+ return res;
+ clk_disable_unprepare(pltfm_host->clk);
+ return res;
+}
+
+static int sdhci_brcmstb_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ int err;
+
+ err = clk_prepare_enable(pltfm_host->clk);
+ if (err)
+ return err;
+ return sdhci_resume_host(host);
+}
+
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(sdhci_brcmstb_pmops, sdhci_brcmstb_suspend,
+ sdhci_brcmstb_resume);
+
+static const struct sdhci_ops sdhci_brcmstb_ops = {
+ .set_clock = sdhci_set_clock,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
+static struct sdhci_pltfm_data sdhci_brcmstb_pdata = {
+ .ops = &sdhci_brcmstb_ops,
+};
+
+static int sdhci_brcmstb_probe(struct platform_device *pdev)
+{
+ struct sdhci_host *host;
+ struct sdhci_pltfm_host *pltfm_host;
+ struct clk *clk;
+ int res;
+
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev, "Clock not found in Device Tree\n");
+ clk = NULL;
+ }
+ res = clk_prepare_enable(clk);
+ if (res)
+ return res;
+
+ host = sdhci_pltfm_init(pdev, &sdhci_brcmstb_pdata, 0);
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ /* Enable MMC_CAP2_HC_ERASE_SZ for better max discard calculations */
+ host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
+
+ sdhci_get_of_property(pdev);
+ mmc_of_parse(host->mmc);
+
+ /*
+ * Supply the existing CAPS, but clear the UHS modes. This
+ * will allow these modes to be specified by device tree
+ * properties through mmc_of_parse().
+ */
+ host->caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
+ host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_SDR104 |
+ SDHCI_SUPPORT_DDR50);
+ host->quirks |= SDHCI_QUIRK_MISSING_CAPS |
+ SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+
+ res = sdhci_add_host(host);
+ if (res) {
+ sdhci_pltfm_free(pdev);
+ return res;
+ }
+
+ pltfm_host = sdhci_priv(host);
+ pltfm_host->clk = clk;
+ return res;
+}
+
+static const struct of_device_id sdhci_brcm_of_match[] = {
+ { .compatible = "brcm,bcm7425-sdhci" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
+
+static struct platform_driver sdhci_brcmstb_driver = {
+ .driver = {
+ .name = "sdhci-brcmstb",
+ .owner = THIS_MODULE,
+ .pm = &sdhci_brcmstb_pmops,
+ .of_match_table = of_match_ptr(sdhci_brcm_of_match),
+ },
+ .probe = sdhci_brcmstb_probe,
+ .remove = sdhci_pltfm_unregister,
+};
+
+module_platform_driver(sdhci_brcmstb_driver);
+
+MODULE_DESCRIPTION("SDHCI driver for Broadcom BRCMSTB SoCs");
+MODULE_AUTHOR("Broadcom");
+MODULE_LICENSE("GPL v2");
--
1.9.0.138.g2de3478
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