xref: /linux/drivers/spi/spi-pxa2xx-pci.c (revision d91517839e5d95adc0cf4b28caa7af62a71de526)
1 /*
2  * CE4100's SPI device is more or less the same one as found on PXA
3  *
4  */
5 #include <linux/pci.h>
6 #include <linux/platform_device.h>
7 #include <linux/of_device.h>
8 #include <linux/module.h>
9 #include <linux/spi/pxa2xx_spi.h>
10 
11 static int ce4100_spi_probe(struct pci_dev *dev,
12 		const struct pci_device_id *ent)
13 {
14 	struct platform_device_info pi;
15 	int ret;
16 	struct platform_device *pdev;
17 	struct pxa2xx_spi_master spi_pdata;
18 	struct ssp_device *ssp;
19 
20 	ret = pcim_enable_device(dev);
21 	if (ret)
22 		return ret;
23 
24 	ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
25 	if (ret)
26 		return ret;
27 
28 	memset(&spi_pdata, 0, sizeof(spi_pdata));
29 	spi_pdata.num_chipselect = dev->devfn;
30 
31 	ssp = &spi_pdata.ssp;
32 	ssp->phys_base = pci_resource_start(dev, 0);
33 	ssp->mmio_base = pcim_iomap_table(dev)[0];
34 	if (!ssp->mmio_base) {
35 		dev_err(&dev->dev, "failed to ioremap() registers\n");
36 		return -EIO;
37 	}
38 	ssp->irq = dev->irq;
39 	ssp->port_id = dev->devfn;
40 	ssp->type = PXA25x_SSP;
41 
42 	memset(&pi, 0, sizeof(pi));
43 	pi.parent = &dev->dev;
44 	pi.name = "pxa2xx-spi";
45 	pi.id = ssp->port_id;
46 	pi.data = &spi_pdata;
47 	pi.size_data = sizeof(spi_pdata);
48 
49 	pdev = platform_device_register_full(&pi);
50 	if (IS_ERR(pdev))
51 		return PTR_ERR(pdev);
52 
53 	pci_set_drvdata(dev, pdev);
54 
55 	return 0;
56 }
57 
58 static void ce4100_spi_remove(struct pci_dev *dev)
59 {
60 	struct platform_device *pdev = pci_get_drvdata(dev);
61 
62 	platform_device_unregister(pdev);
63 }
64 
65 static const struct pci_device_id ce4100_spi_devices[] = {
66 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2e6a) },
67 	{ },
68 };
69 MODULE_DEVICE_TABLE(pci, ce4100_spi_devices);
70 
71 static struct pci_driver ce4100_spi_driver = {
72 	.name           = "ce4100_spi",
73 	.id_table       = ce4100_spi_devices,
74 	.probe          = ce4100_spi_probe,
75 	.remove         = ce4100_spi_remove,
76 };
77 
78 module_pci_driver(ce4100_spi_driver);
79 
80 MODULE_DESCRIPTION("CE4100 PCI-SPI glue code for PXA's driver");
81 MODULE_LICENSE("GPL v2");
82 MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");
83