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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2009-2011 Florian Fainelli <florian@openwrt.org>
* Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <bcm63xx_cpu.h>
#include <bcm63xx_dev_spi.h>
#include <bcm63xx_regs.h>
#ifdef BCMCPU_RUNTIME_DETECT
/*
* register offsets
*/
static const unsigned long bcm6338_regs_spi[] = {
__GEN_SPI_REGS_TABLE(6338)
};
static const unsigned long bcm6348_regs_spi[] = {
__GEN_SPI_REGS_TABLE(6348)
};
static const unsigned long bcm6358_regs_spi[] = {
__GEN_SPI_REGS_TABLE(6358)
};
static const unsigned long bcm6368_regs_spi[] = {
__GEN_SPI_REGS_TABLE(6368)
};
const unsigned long *bcm63xx_regs_spi;
EXPORT_SYMBOL(bcm63xx_regs_spi);
static __init void bcm63xx_spi_regs_init(void)
{
if (BCMCPU_IS_6338())
bcm63xx_regs_spi = bcm6338_regs_spi;
if (BCMCPU_IS_6348())
bcm63xx_regs_spi = bcm6348_regs_spi;
if (BCMCPU_IS_6358())
bcm63xx_regs_spi = bcm6358_regs_spi;
if (BCMCPU_IS_6368())
bcm63xx_regs_spi = bcm6368_regs_spi;
}
#else
static __init void bcm63xx_spi_regs_init(void) { }
#endif
static struct resource spi_resources[] = {
{
.start = -1, /* filled at runtime */
.end = -1, /* filled at runtime */
.flags = IORESOURCE_MEM,
},
{
.start = -1, /* filled at runtime */
.flags = IORESOURCE_IRQ,
},
};
static struct bcm63xx_spi_pdata spi_pdata = {
.bus_num = 0,
.num_chipselect = 8,
};
static struct platform_device bcm63xx_spi_device = {
.name = "bcm63xx-spi",
.id = -1,
.num_resources = ARRAY_SIZE(spi_resources),
.resource = spi_resources,
.dev = {
.platform_data = &spi_pdata,
},
};
int __init bcm63xx_spi_register(void)
{
struct clk *periph_clk;
if (BCMCPU_IS_6345())
return -ENODEV;
periph_clk = clk_get(NULL, "periph");
if (IS_ERR(periph_clk)) {
pr_err("unable to get periph clock\n");
return -ENODEV;
}
/* Set bus frequency */
spi_pdata.speed_hz = clk_get_rate(periph_clk);
spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
spi_resources[0].end = spi_resources[0].start;
spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
spi_resources[0].end += BCM_6338_RSET_SPI_SIZE - 1;
spi_pdata.fifo_size = SPI_6338_MSG_DATA_SIZE;
}
if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE;
}
bcm63xx_spi_regs_init();
return platform_device_register(&bcm63xx_spi_device);
}
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