spi/pxa2xx: embed the ssp_device to platform data
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>
diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index ece979e..364964d 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -8,55 +8,11 @@
#include <linux/module.h>
#include <linux/spi/pxa2xx_spi.h>
-struct ce4100_info {
- struct ssp_device ssp;
- struct platform_device *spi_pdev;
-};
-
-static DEFINE_MUTEX(ssp_lock);
-static LIST_HEAD(ssp_list);
-
-struct ssp_device *pxa_ssp_request(int port, const char *label)
-{
- struct ssp_device *ssp = NULL;
-
- mutex_lock(&ssp_lock);
-
- list_for_each_entry(ssp, &ssp_list, node) {
- if (ssp->port_id == port && ssp->use_count == 0) {
- ssp->use_count++;
- ssp->label = label;
- break;
- }
- }
-
- mutex_unlock(&ssp_lock);
-
- if (&ssp->node == &ssp_list)
- return NULL;
-
- return ssp;
-}
-EXPORT_SYMBOL_GPL(pxa_ssp_request);
-
-void pxa_ssp_free(struct ssp_device *ssp)
-{
- mutex_lock(&ssp_lock);
- if (ssp->use_count) {
- ssp->use_count--;
- ssp->label = NULL;
- } else
- dev_err(&ssp->pdev->dev, "device already free\n");
- mutex_unlock(&ssp_lock);
-}
-EXPORT_SYMBOL_GPL(pxa_ssp_free);
-
static int ce4100_spi_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
{
struct platform_device_info pi;
int ret;
- struct ce4100_info *spi_info;
struct platform_device *pdev;
struct pxa2xx_spi_master spi_pdata;
struct ssp_device *ssp;
@@ -69,14 +25,10 @@
if (!ret)
return ret;
- spi_info = devm_kzalloc(&dev->dev, sizeof(*spi_info), GFP_KERNEL);
- if (!spi_info)
- return -ENOMEM;
-
memset(&spi_pdata, 0, sizeof(spi_pdata));
spi_pdata.num_chipselect = dev->devfn;
- ssp = &spi_info->ssp;
+ ssp = &spi_pdata.ssp;
ssp->phys_base = pci_resource_start(dev, 0);
ssp->mmio_base = pcim_iomap_table(dev)[0];
if (!ssp->mmio_base) {
@@ -87,10 +39,6 @@
ssp->port_id = dev->devfn;
ssp->type = PXA25x_SSP;
- mutex_lock(&ssp_lock);
- list_add(&ssp->node, &ssp_list);
- mutex_unlock(&ssp_lock);
-
memset(&pi, 0, sizeof(pi));
pi.parent = &dev->dev;
pi.name = "pxa2xx-spi";
@@ -99,30 +47,19 @@
pi.size_data = sizeof(spi_pdata);
pdev = platform_device_register_full(&pi);
- if (!pdev) {
- mutex_lock(&ssp_lock);
- list_del(&ssp->node);
- mutex_unlock(&ssp_lock);
-
+ if (!pdev)
return -ENOMEM;
- }
- spi_info->spi_pdev = pdev;
- pci_set_drvdata(dev, spi_info);
+ pci_set_drvdata(dev, pdev);
return 0;
}
static void ce4100_spi_remove(struct pci_dev *dev)
{
- struct ce4100_info *spi_info = pci_get_drvdata(dev);
- struct ssp_device *ssp = &spi_info->ssp;
+ struct platform_device *pdev = pci_get_drvdata(dev);
- platform_device_unregister(spi_info->spi_pdev);
-
- mutex_lock(&ssp_lock);
- list_del(&ssp->node);
- mutex_unlock(&ssp_lock);
+ platform_device_unregister(pdev);
}
static DEFINE_PCI_DEVICE_TABLE(ce4100_spi_devices) = {