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authorAnton Vorontsov <avorontsov@mvista.com>2010-05-28 13:14:44 +0400
committerAnton Vorontsov <avorontsov@mvista.com>2010-06-08 17:37:09 +0400
commit6279d0ea928911f7c747a65e880c36a91b066805 (patch)
tree801dbd4b9cb7006f6bb628f88cb2071522f090e7 /arch/arm/mach-cns3xxx
parent5f32f7a028c9e8e032132b1818bde6cda5785a6b (diff)
downloadlwn-6279d0ea928911f7c747a65e880c36a91b066805.tar.gz
lwn-6279d0ea928911f7c747a65e880c36a91b066805.zip
ARM: cns3xxx: Add support for SDHCI controllers
CNS3xxx chips have SDHCI-compatible SDIO/SD/MMC controller. This patch adds the support using sdhci-cns3xxx driver. Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Diffstat (limited to 'arch/arm/mach-cns3xxx')
-rw-r--r--arch/arm/mach-cns3xxx/Makefile2
-rw-r--r--arch/arm/mach-cns3xxx/cns3420vb.c3
-rw-r--r--arch/arm/mach-cns3xxx/devices.c59
-rw-r--r--arch/arm/mach-cns3xxx/devices.h19
4 files changed, 82 insertions, 1 deletions
diff --git a/arch/arm/mach-cns3xxx/Makefile b/arch/arm/mach-cns3xxx/Makefile
index 683f11794cbe..11033f1c2e23 100644
--- a/arch/arm/mach-cns3xxx/Makefile
+++ b/arch/arm/mach-cns3xxx/Makefile
@@ -1,3 +1,3 @@
-obj-$(CONFIG_ARCH_CNS3XXX) += core.o pm.o
+obj-$(CONFIG_ARCH_CNS3XXX) += core.o pm.o devices.o
obj-$(CONFIG_PCI) += pcie.o
obj-$(CONFIG_MACH_CNS3420VB) += cns3420vb.o
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
index 2e30c8288740..04ae1ced60f0 100644
--- a/arch/arm/mach-cns3xxx/cns3420vb.c
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -32,6 +32,7 @@
#include <mach/cns3xxx.h>
#include <mach/irqs.h>
#include "core.h"
+#include "devices.h"
/*
* NOR Flash
@@ -117,6 +118,8 @@ static void __init cns3420_init(void)
{
platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
+ cns3xxx_sdhci_init();
+
pm_power_off = cns3xxx_power_off;
}
diff --git a/arch/arm/mach-cns3xxx/devices.c b/arch/arm/mach-cns3xxx/devices.c
new file mode 100644
index 000000000000..b01a30114622
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/devices.c
@@ -0,0 +1,59 @@
+/*
+ * CNS3xxx common devices
+ *
+ * Copyright 2008 Cavium Networks
+ * Scott Shu
+ * Copyright 2010 MontaVista Software, LLC.
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file 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.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/compiler.h>
+#include <linux/platform_device.h>
+#include <mach/cns3xxx.h>
+#include <mach/irqs.h>
+#include "core.h"
+#include "devices.h"
+
+/*
+ * SDHCI
+ */
+static struct resource cns3xxx_sdhci_resources[] = {
+ [0] = {
+ .start = CNS3XXX_SDIO_BASE,
+ .end = CNS3XXX_SDIO_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_SDIO,
+ .end = IRQ_CNS3XXX_SDIO,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device cns3xxx_sdhci_pdev = {
+ .name = "sdhci-cns3xxx",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(cns3xxx_sdhci_resources),
+ .resource = cns3xxx_sdhci_resources,
+};
+
+void __init cns3xxx_sdhci_init(void)
+{
+ u32 __iomem *gpioa = __io(CNS3XXX_MISC_BASE_VIRT + 0x0014);
+ u32 gpioa_pins = __raw_readl(gpioa);
+
+ /* MMC/SD pins share with GPIOA */
+ gpioa_pins |= 0x1fff0004;
+ __raw_writel(gpioa_pins, gpioa);
+
+ cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO));
+
+ platform_device_register(&cns3xxx_sdhci_pdev);
+}
diff --git a/arch/arm/mach-cns3xxx/devices.h b/arch/arm/mach-cns3xxx/devices.h
new file mode 100644
index 000000000000..0735a45a3aee
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/devices.h
@@ -0,0 +1,19 @@
+/*
+ * CNS3xxx common devices
+ *
+ * Copyright 2008 Cavium Networks
+ * Scott Shu
+ * Copyright 2010 MontaVista Software, LLC.
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file 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.
+ */
+
+#ifndef __CNS3XXX_DEVICES_H_
+#define __CNS3XXX_DEVICES_H_
+
+void __init cns3xxx_sdhci_init(void);
+
+#endif /* __CNS3XXX_DEVICES_H_ */