static int __devinit xilinx_spi_probe(struct platform_device *dev)
{
struct xspi_platform_data *pdata;
struct resource *r;
int irq;
struct spi_master *master;
u8 i;
pdata = dev->dev.platform_data;
if (!pdata)
return -ENODEV;
r = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!r)
return -ENODEV;
irq = platform_get_irq(dev, 0);
if (irq < 0)
return -ENXIO;
master = xilinx_spi_init(&dev->dev, r, irq, dev->id);
if (!master)
return -ENODEV;
for (i = 0; i < pdata->num_devices; i++)
spi_new_device(master, pdata->devices + i);
platform_set_drvdata(dev, master);
return 0;
}
static int __devinit xilinx_spi_probe(struct platform_device *dev)
{
struct xspi_platform_data *pdata;
struct resource *r;
int irq, num_cs = 0, little_endian = 0, bits_per_word = 8;
struct spi_master *master;
u8 i;
pdata = dev->dev.platform_data;
if (pdata) {
num_cs = pdata->num_chipselect;
little_endian = pdata->little_endian;
bits_per_word = pdata->bits_per_word;
}
#ifdef CONFIG_OF
if (dev->dev.of_node) {
const __be32 *prop;
int len;
/* number of slave select bits is required */
prop = of_get_property(dev->dev.of_node, "xlnx,num-ss-bits",
&len);
if (prop && len >= sizeof(*prop))
num_cs = __be32_to_cpup(prop);
}
#endif
if (!num_cs) {
dev_err(&dev->dev, "Missing slave select configuration data\n");
return -EINVAL;
}
r = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!r)
return -ENODEV;
irq = platform_get_irq(dev, 0);
if (irq < 0)
return -ENXIO;
master = xilinx_spi_init(&dev->dev, r, irq, dev->id, num_cs,
little_endian, bits_per_word);
if (!master)
return -ENODEV;
if (pdata) {
for (i = 0; i < pdata->num_devices; i++)
spi_new_device(master, pdata->devices + i);
}
platform_set_drvdata(dev, master);
return 0;
}
static int __devinit xilinx_spi_of_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
struct spi_master *master;
struct xspi_platform_data *pdata;
struct resource r_mem;
struct resource r_irq;
int rc = 0;
const u32 *prop;
int len;
rc = of_address_to_resource(ofdev->node, 0, &r_mem);
if (rc) {
dev_warn(&ofdev->dev, "invalid address\n");
return rc;
}
rc = of_irq_to_resource(ofdev->node, 0, &r_irq);
if (rc == NO_IRQ) {
dev_warn(&ofdev->dev, "no IRQ found\n");
return -ENODEV;
}
ofdev->dev.platform_data =
kzalloc(sizeof(struct xspi_platform_data), GFP_KERNEL);
pdata = ofdev->dev.platform_data;
if (!pdata)
return -ENOMEM;
/* number of slave select bits is required */
prop = of_get_property(ofdev->node, "xlnx,num-ss-bits", &len);
if (!prop || len < sizeof(*prop)) {
dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n");
return -EINVAL;
}
pdata->num_chipselect = *prop;
pdata->bits_per_word = 8;
master = xilinx_spi_init(&ofdev->dev, &r_mem, r_irq.start, -1);
if (!master)
return -ENODEV;
dev_set_drvdata(&ofdev->dev, master);
/* Add any subnodes on the SPI bus */
of_register_spi_devices(master, ofdev->node);
return 0;
}
