851bacf590
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>
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* CE4100's SPI device is more or less the same one as found on PXA
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*
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*/
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/of_device.h>
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#include <linux/module.h>
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#include <linux/spi/pxa2xx_spi.h>
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static int ce4100_spi_probe(struct pci_dev *dev,
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const struct pci_device_id *ent)
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{
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struct platform_device_info pi;
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int ret;
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struct platform_device *pdev;
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struct pxa2xx_spi_master spi_pdata;
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struct ssp_device *ssp;
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ret = pcim_enable_device(dev);
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if (ret)
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return ret;
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ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
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if (!ret)
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return ret;
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memset(&spi_pdata, 0, sizeof(spi_pdata));
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spi_pdata.num_chipselect = dev->devfn;
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ssp = &spi_pdata.ssp;
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ssp->phys_base = pci_resource_start(dev, 0);
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ssp->mmio_base = pcim_iomap_table(dev)[0];
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if (!ssp->mmio_base) {
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dev_err(&dev->dev, "failed to ioremap() registers\n");
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return -EIO;
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}
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ssp->irq = dev->irq;
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ssp->port_id = dev->devfn;
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ssp->type = PXA25x_SSP;
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memset(&pi, 0, sizeof(pi));
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pi.parent = &dev->dev;
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pi.name = "pxa2xx-spi";
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pi.id = ssp->port_id;
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pi.data = &spi_pdata;
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pi.size_data = sizeof(spi_pdata);
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pdev = platform_device_register_full(&pi);
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if (!pdev)
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return -ENOMEM;
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pci_set_drvdata(dev, pdev);
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return 0;
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}
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static void ce4100_spi_remove(struct pci_dev *dev)
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{
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struct platform_device *pdev = pci_get_drvdata(dev);
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platform_device_unregister(pdev);
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}
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static DEFINE_PCI_DEVICE_TABLE(ce4100_spi_devices) = {
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{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e6a) },
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{ },
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};
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MODULE_DEVICE_TABLE(pci, ce4100_spi_devices);
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static struct pci_driver ce4100_spi_driver = {
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.name = "ce4100_spi",
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.id_table = ce4100_spi_devices,
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.probe = ce4100_spi_probe,
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.remove = ce4100_spi_remove,
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};
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module_pci_driver(ce4100_spi_driver);
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MODULE_DESCRIPTION("CE4100 PCI-SPI glue code for PXA's driver");
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");
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