devices.c
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/*
* 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);
}