[deliverable/linux.git] / drivers / spi / spi-pxa2xx-pci.c

/*
 * CE4100's SPI device is more or less the same one as found on PXA
 *
 */
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <linux/module.h>
#include <linux/spi/pxa2xx_spi.h>

enum {
	PORT_CE4100,
	PORT_BYT,
};

struct pxa_spi_info {
	enum pxa_ssp_type type;
	int port_id;
	int num_chipselect;
	int tx_slave_id;
	int tx_chan_id;
	int rx_slave_id;
	int rx_chan_id;
};

static struct pxa_spi_info spi_info_configs[] = {
	[PORT_CE4100] = {
		.type = PXA25x_SSP,
		.port_id =  -1,
		.num_chipselect = -1,
		.tx_slave_id = -1,
		.tx_chan_id = -1,
		.rx_slave_id = -1,
		.rx_chan_id = -1,
	},
	[PORT_BYT] = {
		.type = LPSS_SSP,
		.port_id = 0,
		.num_chipselect = 1,
		.tx_slave_id = 0,
		.tx_chan_id = 0,
		.rx_slave_id = 1,
		.rx_chan_id = 1,
	},
};

static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
		const struct pci_device_id *ent)
{
	struct platform_device_info pi;
	int ret;
	struct platform_device *pdev;
	struct pxa2xx_spi_master spi_pdata;
	struct ssp_device *ssp;
	struct pxa_spi_info *c;

	ret = pcim_enable_device(dev);
	if (ret)
		return ret;

	ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
	if (ret)
		return ret;

	c = &spi_info_configs[ent->driver_data];

	memset(&spi_pdata, 0, sizeof(spi_pdata));
	spi_pdata.num_chipselect = (c->num_chipselect > 0) ?
					c->num_chipselect : dev->devfn;
	spi_pdata.tx_slave_id = c->tx_slave_id;
	spi_pdata.tx_chan_id = c->tx_chan_id;
	spi_pdata.rx_slave_id = c->rx_slave_id;
	spi_pdata.rx_chan_id = c->rx_chan_id;
	spi_pdata.enable_dma = c->rx_slave_id >= 0 && c->tx_slave_id >= 0;

	ssp = &spi_pdata.ssp;
	ssp->phys_base = pci_resource_start(dev, 0);
	ssp->mmio_base = pcim_iomap_table(dev)[0];
	if (!ssp->mmio_base) {
		dev_err(&dev->dev, "failed to ioremap() registers\n");
		return -EIO;
	}
	ssp->irq = dev->irq;
	ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
	ssp->type = c->type;

	memset(&pi, 0, sizeof(pi));
	pi.parent = &dev->dev;
	pi.name = "pxa2xx-spi";
	pi.id = ssp->port_id;
	pi.data = &spi_pdata;
	pi.size_data = sizeof(spi_pdata);

	pdev = platform_device_register_full(&pi);
	if (IS_ERR(pdev))
		return PTR_ERR(pdev);

	pci_set_drvdata(dev, pdev);

	return 0;
}

static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
{
	struct platform_device *pdev = pci_get_drvdata(dev);

	platform_device_unregister(pdev);
}

static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
	{ PCI_VDEVICE(INTEL, 0x2e6a), PORT_CE4100 },
	{ PCI_VDEVICE(INTEL, 0x0f0e), PORT_BYT },
	{ },
};
MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);

static struct pci_driver pxa2xx_spi_pci_driver = {
	.name           = "pxa2xx_spi_pci",
	.id_table       = pxa2xx_spi_pci_devices,
	.probe          = pxa2xx_spi_pci_probe,
	.remove         = pxa2xx_spi_pci_remove,
};

module_pci_driver(pxa2xx_spi_pci_driver);

MODULE_DESCRIPTION("CE4100/LPSS PCI-SPI glue code for PXA's driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");
Commit	Line	Data
d6ea3df0 SAS	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>
d7614de4	8	#include <linux/module.h>
d6ea3df0 SAS	9	#include <linux/spi/pxa2xx_spi.h>
d6ea3df0 SAS	10
d6ba32d5 CCE	11	enum {
	12	PORT_CE4100,
	13	PORT_BYT,
	14	};
	15
	16	struct pxa_spi_info {
	17	enum pxa_ssp_type type;
	18	int port_id;
	19	int num_chipselect;
	20	int tx_slave_id;
	21	int tx_chan_id;
	22	int rx_slave_id;
	23	int rx_chan_id;
	24	};
	25
	26	static struct pxa_spi_info spi_info_configs[] = {
	27	[PORT_CE4100] = {
	28	.type = PXA25x_SSP,
	29	.port_id = -1,
	30	.num_chipselect = -1,
	31	.tx_slave_id = -1,
	32	.tx_chan_id = -1,
	33	.rx_slave_id = -1,
	34	.rx_chan_id = -1,
	35	},
	36	[PORT_BYT] = {
	37	.type = LPSS_SSP,
	38	.port_id = 0,
	39	.num_chipselect = 1,
	40	.tx_slave_id = 0,
	41	.tx_chan_id = 0,
	42	.rx_slave_id = 1,
	43	.rx_chan_id = 1,
	44	},
	45	};
	46
	47	static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
d6ea3df0 SAS	48	const struct pci_device_id *ent)
d6ea3df0 SAS	49	{
0202775b	50	struct platform_device_info pi;
d6ea3df0	51	int ret;
d6ea3df0	52	struct platform_device *pdev;
0f3e1d27	53	struct pxa2xx_spi_master spi_pdata;
d6ea3df0	54	struct ssp_device *ssp;
d6ba32d5	55	struct pxa_spi_info *c;
d6ea3df0	56
0202775b	57	ret = pcim_enable_device(dev);
d6ea3df0 SAS	58	if (ret)
	59	return ret;
	60
0202775b	61	ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
c1346340	62	if (ret)
d6ea3df0	63	return ret;
d6ea3df0	64
d6ba32d5 CCE	65	c = &spi_info_configs[ent->driver_data];
d6ba32d5 CCE	66
0f3e1d27	67	memset(&spi_pdata, 0, sizeof(spi_pdata));
d6ba32d5 CCE	68	spi_pdata.num_chipselect = (c->num_chipselect > 0) ?
	69	c->num_chipselect : dev->devfn;
	70	spi_pdata.tx_slave_id = c->tx_slave_id;
	71	spi_pdata.tx_chan_id = c->tx_chan_id;
	72	spi_pdata.rx_slave_id = c->rx_slave_id;
	73	spi_pdata.rx_chan_id = c->rx_chan_id;
	74	spi_pdata.enable_dma = c->rx_slave_id >= 0 && c->tx_slave_id >= 0;
d6ea3df0	75
851bacf5	76	ssp = &spi_pdata.ssp;
d6ea3df0	77	ssp->phys_base = pci_resource_start(dev, 0);
0202775b	78	ssp->mmio_base = pcim_iomap_table(dev)[0];
d6ea3df0	79	if (!ssp->mmio_base) {
0202775b MW	80	dev_err(&dev->dev, "failed to ioremap() registers\n");
0202775b MW	81	return -EIO;
d6ea3df0 SAS	82	}
d6ea3df0 SAS	83	ssp->irq = dev->irq;
d6ba32d5 CCE	84	ssp->port_id = (c->port_id >= 0) ? c->port_id : dev->devfn;
d6ba32d5 CCE	85	ssp->type = c->type;
d6ea3df0	86
0202775b MW	87	memset(&pi, 0, sizeof(pi));
	88	pi.parent = &dev->dev;
	89	pi.name = "pxa2xx-spi";
	90	pi.id = ssp->port_id;
	91	pi.data = &spi_pdata;
	92	pi.size_data = sizeof(spi_pdata);
d6ea3df0	93
0202775b	94	pdev = platform_device_register_full(&pi);
d77b5382 WY	95	if (IS_ERR(pdev))
d77b5382 WY	96	return PTR_ERR(pdev);
d6ea3df0	97
851bacf5	98	pci_set_drvdata(dev, pdev);
d6ea3df0	99
0202775b	100	return 0;
d6ea3df0 SAS	101	}
d6ea3df0 SAS	102
d6ba32d5	103	static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
d6ea3df0	104	{
851bacf5	105	struct platform_device *pdev = pci_get_drvdata(dev);
d6ea3df0	106
851bacf5	107	platform_device_unregister(pdev);
d6ea3df0 SAS	108	}
d6ea3df0 SAS	109
d6ba32d5 CCE	110	static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
	111	{ PCI_VDEVICE(INTEL, 0x2e6a), PORT_CE4100 },
	112	{ PCI_VDEVICE(INTEL, 0x0f0e), PORT_BYT },
d6ea3df0 SAS	113	{ },
d6ea3df0 SAS	114	};
d6ba32d5	115	MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);
d6ea3df0	116
d6ba32d5 CCE	117	static struct pci_driver pxa2xx_spi_pci_driver = {
	118	.name = "pxa2xx_spi_pci",
	119	.id_table = pxa2xx_spi_pci_devices,
	120	.probe = pxa2xx_spi_pci_probe,
	121	.remove = pxa2xx_spi_pci_remove,
d6ea3df0 SAS	122	};
d6ea3df0 SAS	123
d6ba32d5	124	module_pci_driver(pxa2xx_spi_pci_driver);
d6ea3df0	125
d6ba32d5	126	MODULE_DESCRIPTION("CE4100/LPSS PCI-SPI glue code for PXA's driver");
d6ea3df0 SAS	127	MODULE_LICENSE("GPL v2");
d6ea3df0 SAS	128	MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");