1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include "spi-pxa2xx.h"
18 	return param == chan->device->dev;  in pxa2xx_spi_idma_filter()
22 pxa2xx_spi_init_ssp(struct platform_device *pdev, struct ssp_device *ssp, enum pxa_ssp_type type)  in pxa2xx_spi_init_ssp()  argument
24 	struct device *dev = &pdev->dev;  in pxa2xx_spi_init_ssp()
29 	ssp->mmio_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in pxa2xx_spi_init_ssp()
30 	if (IS_ERR(ssp->mmio_base))  in pxa2xx_spi_init_ssp()
31 		return PTR_ERR(ssp->mmio_base);  in pxa2xx_spi_init_ssp()
33 	ssp->phys_base = res->start;  in pxa2xx_spi_init_ssp()
35 	ssp->clk = devm_clk_get(dev, NULL);  in pxa2xx_spi_init_ssp()
36 	if (IS_ERR(ssp->clk))  in pxa2xx_spi_init_ssp()
37 		return PTR_ERR(ssp->clk);  in pxa2xx_spi_init_ssp()
39 	ssp->irq = platform_get_irq(pdev, 0);  in pxa2xx_spi_init_ssp()
40 	if (ssp->irq < 0)  in pxa2xx_spi_init_ssp()
41 		return ssp->irq;  in pxa2xx_spi_init_ssp()
43 	ssp->type = type;  in pxa2xx_spi_init_ssp()
44 	ssp->dev = dev;  in pxa2xx_spi_init_ssp()
48 		ssp->port_id = -1;  in pxa2xx_spi_init_ssp()
50 		ssp->port_id = uid;  in pxa2xx_spi_init_ssp()
55 static void pxa2xx_spi_ssp_release(void *ssp)  in pxa2xx_spi_ssp_release()  argument
57 	pxa_ssp_free(ssp);  in pxa2xx_spi_ssp_release()
62 	struct ssp_device *ssp;  in pxa2xx_spi_ssp_request()  local
65 	ssp = pxa_ssp_request(pdev->id, pdev->name);  in pxa2xx_spi_ssp_request()
66 	if (!ssp)  in pxa2xx_spi_ssp_request()
69 	status = devm_add_action_or_reset(&pdev->dev, pxa2xx_spi_ssp_release, ssp);  in pxa2xx_spi_ssp_request()
73 	return ssp;  in pxa2xx_spi_ssp_request()
80 	struct device *dev = &pdev->dev;  in pxa2xx_spi_init_pdata()
81 	struct device *parent = dev->parent;  in pxa2xx_spi_init_pdata()
84 	struct ssp_device *ssp;  in pxa2xx_spi_init_pdata()  local
89 	ssp = pxa2xx_spi_ssp_request(pdev);  in pxa2xx_spi_init_pdata()
90 	if (IS_ERR(ssp))  in pxa2xx_spi_init_pdata()
91 		return ERR_CAST(ssp);  in pxa2xx_spi_init_pdata()
92 	if (ssp) {  in pxa2xx_spi_init_pdata()
93 		type = ssp->type;  in pxa2xx_spi_init_pdata()
99 		status = device_property_read_u32(dev, "intel,spi-pxa2xx-type", &value);  in pxa2xx_spi_init_pdata()
106 	/* Validate the SSP type correctness */  in pxa2xx_spi_init_pdata()
108 		return ERR_PTR(-EINVAL);  in pxa2xx_spi_init_pdata()
112 		return ERR_PTR(-ENOMEM);  in pxa2xx_spi_init_pdata()
114 	/* Platforms with iDMA 64-bit */  in pxa2xx_spi_init_pdata()
117 		pdata->tx_param = parent;  in pxa2xx_spi_init_pdata()
118 		pdata->rx_param = parent;  in pxa2xx_spi_init_pdata()
119 		pdata->dma_filter = pxa2xx_spi_idma_filter;  in pxa2xx_spi_init_pdata()
123 	device_property_read_u32(dev, "num-cs", &num_cs);  in pxa2xx_spi_init_pdata()
125 	pdata->num_chipselect = num_cs;  in pxa2xx_spi_init_pdata()
126 	pdata->is_target = device_property_read_bool(dev, "spi-slave");  in pxa2xx_spi_init_pdata()
127 	pdata->enable_dma = true;  in pxa2xx_spi_init_pdata()
128 	pdata->dma_burst_size = 1;  in pxa2xx_spi_init_pdata()
130 	/* If SSP has been already enumerated, use it */  in pxa2xx_spi_init_pdata()
131 	if (ssp)  in pxa2xx_spi_init_pdata()
134 	status = pxa2xx_spi_init_ssp(pdev, &pdata->ssp, type);  in pxa2xx_spi_init_pdata()
144 	struct device *dev = &pdev->dev;  in pxa2xx_spi_platform_probe()
145 	struct ssp_device *ssp;  in pxa2xx_spi_platform_probe()  local
155 	ssp = pxa2xx_spi_ssp_request(pdev);  in pxa2xx_spi_platform_probe()
156 	if (IS_ERR(ssp))  in pxa2xx_spi_platform_probe()
157 		return PTR_ERR(ssp);  in pxa2xx_spi_platform_probe()
158 	if (!ssp)  in pxa2xx_spi_platform_probe()
159 		ssp = &platform_info->ssp;  in pxa2xx_spi_platform_probe()
166 	ret = pxa2xx_spi_probe(dev, ssp, platform_info);  in pxa2xx_spi_platform_probe()
175 	struct device *dev = &pdev->dev;  in pxa2xx_spi_platform_remove()
197 	{ .compatible = "marvell,mmp2-ssp", .data = (void *)MMP2_SSP },
204 		.name	= "pxa2xx-spi",
226 MODULE_DESCRIPTION("PXA2xx SSP SPI Controller platform driver");
229 MODULE_ALIAS("platform:pxa2xx-spi");