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spi: dw-mmio: add ACPI support 

The Hisilicon Hip08 platform, that uses ACPI, has this controller.
Let's add ACPI support for DW SPI MMIO-based host.

The ACPI ID used is "HISI0173" for the Designware SPI controller of
Hisilicon Hip08 platform.

Signed-off-by: Jay Fang <f.fangjian@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Jay Fang 2018-12-03 11:15:50 +08:00 committed by Mark Brown
parent 2527704d84
commit 32215a6c6b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 9 additions and 0 deletions
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8
drivers/spi/spi-dw-mmio.c
View File

@ -20,6 +20,7 @@
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
#include <linux/acpi.h>
#include <linux/property.h>
#include <linux/regmap.h>
@ -243,12 +244,19 @@ static const struct of_device_id dw_spi_mmio_of_match[] = {
};
MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
static const struct acpi_device_id dw_spi_mmio_acpi_match[] = {
{"HISI0173", 0},
{},
};
MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match);
static struct platform_driver dw_spi_mmio_driver = {
.probe = dw_spi_mmio_probe,
.remove = dw_spi_mmio_remove,
.driver = {
.name = DRIVER_NAME,
.of_match_table = dw_spi_mmio_of_match,
.acpi_match_table = ACPI_PTR(dw_spi_mmio_acpi_match),
},
};
module_platform_driver(dw_spi_mmio_driver);

1
drivers/spi/spi-dw.c
View File

@ -507,6 +507,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
master->handle_err = dw_spi_handle_err;
master->max_speed_hz = dws->max_freq;
master->dev.of_node = dev->of_node;
master->dev.fwnode = dev->fwnode;
master->flags = SPI_MASTER_GPIO_SS;
if (dws->set_cs)