xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

spi/pxa2xx: embed the ssp_device to platform data

Browse Source 
The spi-pxa2xx-pci glue driver had to implement pxa_ssp_request()/free() in
order to support the spi-pxa2xx platform driver. Since the ACPI enabled
platforms can use the same platform driver we would need to implement
pxa_ssp_request()/free() in some central place that can be shared by the
ACPI and PCI glue code.

Instead of doing that we can make pxa_ssp_request()/free() to be available
only when CONFIG_ARCH_PXA is set. On other arches these are being stubbed
out in preference to passing the ssp_device from the platform data
directly.

We also change the SPI bus number to be taken from ssp->port_id instead of
platform device id. This way the supporting code that passes the ssp can
decide the number (or it can set it to the same as pdev->id).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mika Westerberg
2013-01-07 12:44:33 +02:00
committed by Mark Brown
parent 0202775bc3
commit 851bacf590
4 changed files with 28 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/spi/spi-pxa2xx.c
View File

@@ -1535,11 +1535,18 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
struct ssp_device *ssp;
int status;
platform_info = dev->platform_data;
platform_info = dev_get_platdata(dev);
if (!platform_info) {
dev_err(&pdev->dev, "missing platform data\n");
return -ENODEV;
}
ssp = pxa_ssp_request(pdev->id, pdev->name);
if (ssp == NULL) {
dev_err(&pdev->dev, "failed to request SSP%d\n", pdev->id);
if (!ssp)
ssp = &platform_info->ssp;
if (!ssp->mmio_base) {
dev_err(&pdev->dev, "failed to get ssp\n");
return -ENODEV;
}
@@ -1561,7 +1568,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
/* the spi->mode bits understood by this driver: */
master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
master->bus_num = pdev->id;
master->bus_num = ssp->port_id;
master->num_chipselect = platform_info->num_chipselect;
master->dma_alignment = DMA_ALIGNMENT;
master->cleanup = cleanup;