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-rw-r--r--kernel/arch/arm/mach-cns3xxx/devices.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-cns3xxx/devices.c b/kernel/arch/arm/mach-cns3xxx/devices.c
new file mode 100644
index 000000000..7da78a245
--- /dev/null
+++ b/kernel/arch/arm/mach-cns3xxx/devices.c
@@ -0,0 +1,111 @@
+/*
+ * 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/dma-mapping.h>
+#include <linux/platform_device.h>
+#include "cns3xxx.h"
+#include "pm.h"
+#include "core.h"
+#include "devices.h"
+
+/*
+ * AHCI
+ */
+static struct resource cns3xxx_ahci_resource[] = {
+ [0] = {
+ .start = CNS3XXX_SATA2_BASE,
+ .end = CNS3XXX_SATA2_BASE + CNS3XXX_SATA2_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_SATA,
+ .end = IRQ_CNS3XXX_SATA,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 cns3xxx_ahci_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device cns3xxx_ahci_pdev = {
+ .name = "ahci",
+ .id = 0,
+ .resource = cns3xxx_ahci_resource,
+ .num_resources = ARRAY_SIZE(cns3xxx_ahci_resource),
+ .dev = {
+ .dma_mask = &cns3xxx_ahci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+void __init cns3xxx_ahci_init(void)
+{
+ u32 tmp;
+
+ tmp = __raw_readl(MISC_SATA_POWER_MODE);
+ tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */
+ tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */
+ __raw_writel(tmp, MISC_SATA_POWER_MODE);
+
+ /* Enable SATA PHY */
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0);
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1);
+
+ /* Enable SATA Clock */
+ cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA);
+
+ /* De-Asscer SATA Reset */
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA));
+
+ platform_device_register(&cns3xxx_ahci_pdev);
+}
+
+/*
+ * 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 = IOMEM(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);
+}