This patch adds new host controller driver for
Fujitsu SDHCI controller f_sdh30.
Signed-off-by: Vincent Yang vincent.y...@tw.fujitsu.com
---
.../devicetree/bindings/mmc/sdhci-fujitsu.txt | 25 ++
drivers/mmc/host/Kconfig | 7 +
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/sdhci_f_sdh30.c | 340 +
drivers/mmc/host/sdhci_f_sdh30.h | 40 +++
5 files changed, 413 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
create mode 100644 drivers/mmc/host/sdhci_f_sdh30.c
create mode 100644 drivers/mmc/host/sdhci_f_sdh30.h
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
b/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
new file mode 100644
index 000..b6704cd
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt
@@ -0,0 +1,25 @@
+* Fujitsu SDHCI controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci_f_sdh30 driver.
+
+Required properties:
+- compatible: fujitsu,f_sdh30
+
+Optional properties:
+- gpios: Specify gpios for controlling signal level
+- clocks: Specify clocks used by SDHCI controller
+- clock-names: Specify the clock-names to be used
+
+Example:
+
+ sdhci1: sdio@3660 {
+ compatible = fujitsu,f_sdh30;
+ reg = 0 0x3660 0x1000;
+ interrupts = 0 172 0x4,
+0 173 0x4;
+ gpios = gpio0 7 0;
+ clocks = clk_hdmi_2_0, clk_hdmi_3_0;
+ clock-names = sd_sd4clk, sd_bclk;
+ };
+
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 7fee224..a1f3207 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -281,6 +281,13 @@ config MMC_SDHCI_BCM2835
This selects the BCM2835 SD/MMC controller. If you have a BCM2835
platform with SD or MMC devices, say Y or M here.
+config MMC_SDHCI_F_SDH30
+ tristate SDHCI support for Fujitsu Semiconductor F_SDH30
+ depends on MMC_SDHCI (ARCH_MB8AC0300 || ARCH_MB86S70)
+ help
+ This selects the Secure Digital Host Controller Interface (SDHCI)
+ Needed by some Fujitsu SoC for MMC / SD / SDIO support.
+ If you have a controller with this interface, say Y or M here.
If unsure, say N.
config MMC_MOXART
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 7f81ddf..a4c89e5 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o
obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o
obj-$(CONFIG_MMC_SDHCI_S3C)+= sdhci-s3c.o
obj-$(CONFIG_MMC_SDHCI_SIRF) += sdhci-sirf.o
+obj-$(CONFIG_MMC_SDHCI_F_SDH30)+= sdhci_f_sdh30.o
obj-$(CONFIG_MMC_SDHCI_SPEAR) += sdhci-spear.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
diff --git a/drivers/mmc/host/sdhci_f_sdh30.c b/drivers/mmc/host/sdhci_f_sdh30.c
new file mode 100644
index 000..d916c47
--- /dev/null
+++ b/drivers/mmc/host/sdhci_f_sdh30.c
@@ -0,0 +1,340 @@
+/*
+ * linux/drivers/mmc/host/sdhci_f_sdh30.c
+ *
+ * Copyright (C) 2013 - 2014 Fujitsu Semiconductor, Ltd
+ * Vincent Yang vincent.y...@tw.fujitsu.com
+ * Copyright (C) 2014 Linaro Ltd Andy Green andy.gr...@linaro.org
+ *
+ * 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, version 2 of the License.
+ */
+
+#include linux/err.h
+#include linux/delay.h
+#include linux/module.h
+#include linux/mmc/sd.h
+#include linux/mmc/host.h
+#include linux/mmc/card.h
+#include linux/gpio.h
+#include linux/of_gpio.h
+#include linux/of_address.h
+#include linux/platform_device.h
+#include linux/pm.h
+#include linux/pm_runtime.h
+#include linux/suspend.h
+
+#include sdhci.h
+#include sdhci-pltfm.h
+#include sdhci_f_sdh30.h
+#include ../core/core.h
+
+#define DRIVER_NAME f_sdh30
+
+
+struct f_sdhost_priv {
+ struct clk *clk_sd4;
+ struct clk *clk_b;
+ int gpio_select_1v8;
+ u32 vendor_hs200;
+ struct device *dev;
+};
+
+void sdhci_f_sdh30_soft_voltage_switch(struct sdhci_host *host)
+{
+ struct f_sdhost_priv *priv = sdhci_priv(host);
+ u32 ctrl = 0;
+
+ usleep_range(2500, 3000);
+ ctrl = sdhci_readl(host, F_SDH30_IO_CONTROL2);
+ ctrl |= F_SDH30_CRES_O_DN;
+ sdhci_writel(host, ctrl, F_SDH30_IO_CONTROL2);
+ ctrl |= F_SDH30_MSEL_O_1_8;
+ sdhci_writel(host, ctrl, F_SDH30_IO_CONTROL2);
+
+ if (gpio_is_valid(priv-gpio_select_1v8)) {
+ dev_info(priv-dev, %s: setting gpio\n, __func__);
+ gpio_direction_output(priv-gpio_select_1v8, 0);
+ }
+
+ ctrl = ~F_SDH30_CRES_O_DN;
+
