2 * CE4100's SPI device is more or less the same one as found on PXA
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 #include <linux/clk.h>
11 #include <linux/clk-provider.h>
19 enum pxa_ssp_type type;
26 unsigned long max_clk_rate;
29 static struct pxa_spi_info spi_info_configs[] = {
38 .max_clk_rate = 3686400,
48 .max_clk_rate = 50000000,
52 static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
53 const struct pci_device_id *ent)
55 struct platform_device_info pi;
57 struct platform_device *pdev;
58 struct pxa2xx_spi_master spi_pdata;
59 struct ssp_device *ssp;
60 struct pxa_spi_info *c;
63 ret = pcim_enable_device(dev);
67 ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
71 c = &spi_info_configs[ent->driver_data];
73 memset(&spi_pdata, 0, sizeof(spi_pdata));
74 spi_pdata.num_chipselect = (c->num_chipselect > 0) ?
75 c->num_chipselect : dev->devfn;
76 spi_pdata.tx_slave_id = c->tx_slave_id;
77 spi_pdata.tx_chan_id = c->tx_chan_id;
78 spi_pdata.rx_slave_id = c->rx_slave_id;
79 spi_pdata.rx_chan_id = c->rx_chan_id;
80 spi_pdata.enable_dma = c->rx_slave_id >= 0 && c->tx_slave_id >= 0;
83 ssp->phys_base = pci_resource_start(dev, 0);
84 ssp->mmio_base = pcim_iomap_table(dev)[0];
85 if (!ssp->mmio_base) {
86 dev_err(&dev->dev, "failed to ioremap() registers\n");
90 ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
93 snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
94 ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL,
95 CLK_IS_ROOT, c->max_clk_rate);
97 return PTR_ERR(ssp->clk);
99 memset(&pi, 0, sizeof(pi));
100 pi.parent = &dev->dev;
101 pi.name = "pxa2xx-spi";
102 pi.id = ssp->port_id;
103 pi.data = &spi_pdata;
104 pi.size_data = sizeof(spi_pdata);
106 pdev = platform_device_register_full(&pi);
108 clk_unregister(ssp->clk);
109 return PTR_ERR(pdev);
112 pci_set_drvdata(dev, pdev);
117 static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
119 struct platform_device *pdev = pci_get_drvdata(dev);
120 struct pxa2xx_spi_master *spi_pdata;
122 spi_pdata = dev_get_platdata(&pdev->dev);
124 platform_device_unregister(pdev);
125 clk_unregister(spi_pdata->ssp.clk);
128 static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
129 { PCI_VDEVICE(INTEL, 0x2e6a), PORT_CE4100 },
130 { PCI_VDEVICE(INTEL, 0x0f0e), PORT_BYT },
133 MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);
135 static struct pci_driver pxa2xx_spi_pci_driver = {
136 .name = "pxa2xx_spi_pci",
137 .id_table = pxa2xx_spi_pci_devices,
138 .probe = pxa2xx_spi_pci_probe,
139 .remove = pxa2xx_spi_pci_remove,
142 module_pci_driver(pxa2xx_spi_pci_driver);
144 MODULE_DESCRIPTION("CE4100/LPSS PCI-SPI glue code for PXA's driver");
145 MODULE_LICENSE("GPL v2");
146 MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");