提交 f814f9ac 编写于 作者: A Andrew Lunn 提交者: Mark Brown
上级 24ab3275
Marvell Orion SPI device
Required properties:
- compatible : should be "marvell,orion-spi".
- reg : offset and length of the register set for the device
- cell-index : Which of multiple SPI controllers is this.
Optional properties:
- interrupts : Is currently not used.
Example:
spi@10600 {
compatible = "marvell,orion-spi";
#address-cells = <1>;
#size-cells = <0>;
cell-index = <0>;
reg = <0x10600 0x28>;
interrupts = <23>;
status = "disabled";
};
......@@ -17,6 +17,7 @@
#include <linux/io.h>
#include <linux/spi/spi.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/clk.h>
#include <asm/unaligned.h>
......@@ -453,6 +454,8 @@ static int __init orion_spi_probe(struct platform_device *pdev)
struct orion_spi_info *spi_info;
unsigned long tclk_hz;
int status = 0;
const u32 *iprop;
int size;
spi_info = pdev->dev.platform_data;
......@@ -464,6 +467,12 @@ static int __init orion_spi_probe(struct platform_device *pdev)
if (pdev->id != -1)
master->bus_num = pdev->id;
if (pdev->dev.of_node) {
iprop = of_get_property(pdev->dev.of_node, "cell-index",
&size);
if (iprop && size == sizeof(*iprop))
master->bus_num = *iprop;
}
/* we support only mode 0, and no options */
master->mode_bits = 0;
......@@ -511,6 +520,7 @@ static int __init orion_spi_probe(struct platform_device *pdev)
if (orion_spi_reset(spi) < 0)
goto out_rel_mem;
master->dev.of_node = pdev->dev.of_node;
status = spi_register_master(master);
if (status < 0)
goto out_rel_mem;
......@@ -552,10 +562,17 @@ static int __exit orion_spi_remove(struct platform_device *pdev)
MODULE_ALIAS("platform:" DRIVER_NAME);
static const struct of_device_id orion_spi_of_match_table[] __devinitdata = {
{ .compatible = "marvell,orion-spi", },
{}
};
MODULE_DEVICE_TABLE(of, orion_spi_of_match_table);
static struct platform_driver orion_spi_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(orion_spi_of_match_table),
},
.remove = __exit_p(orion_spi_remove),
};
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册