35 MODULE_DESCRIPTION("PXA2xx SSP SPI Controller");
42  * For testing SSCR1 changes that require SSP restart, basically
309  * Read and write LPSS SSP private registers. Caller must first check that
326  * lpss_ssp_setup - perform LPSS SSP specific setup
329  * Perform LPSS SSP specific setup. This function must be called first if
330  * one is going to use LPSS SSP private registers.
338 	drv_data->lpss_base = drv_data->ssp->mmio_base + config->offset;  in lpss_ssp_setup()
450 	/* Wait until SSP becomes idle before deasserting the CS */  in cs_deassert()
487 	pxa_ssp_disable(drv_data->ssp);  in pxa2xx_spi_off()
626 	dev_err(drv_data->ssp->dev, "%s\n", msg);  in int_error_stop()
722 	dev_err(drv_data->ssp->dev, "bad message state in interrupt handler\n");  in handle_bad_msg()
738 	if (pm_runtime_suspended(drv_data->ssp->dev))  in ssp_int()
900 	const struct ssp_device *ssp = drv_data->ssp;  in ssp_get_clk_div()  local
906 	 * that the SSP transmission rate can be greater than the device rate.  in ssp_get_clk_div()
908 	if (ssp->type == PXA25x_SSP || ssp->type == CE4100_SSP)  in ssp_get_clk_div()
1078 	/* Stop the SSP */  in pxa2xx_spi_transfer_one()
1080 		pxa_ssp_disable(drv_data->ssp);  in pxa2xx_spi_transfer_one()
1091 	/* Restart the SSP */  in pxa2xx_spi_transfer_one()
1092 	pxa_ssp_enable(drv_data->ssp);  in pxa2xx_spi_transfer_one()
1141 	/* Disable the SSP */  in pxa2xx_spi_handle_err()
1159 	/* Disable the SSP now */  in pxa2xx_spi_unprepare_transfer()
1341  * autoloading and probing in this module but matching the LPSS SSP type.
1439 	{ .compatible = "marvell,mmp2-ssp", .data = (void *)MMP2_SSP },
1459 	struct ssp_device *ssp;  in pxa2xx_spi_init_pdata()  local
1483 	ssp = &pdata->ssp;  in pxa2xx_spi_init_pdata()
1486 	ssp->mmio_base = devm_ioremap_resource(&pdev->dev, res);  in pxa2xx_spi_init_pdata()
1487 	if (IS_ERR(ssp->mmio_base))  in pxa2xx_spi_init_pdata()
1488 		return ERR_CAST(ssp->mmio_base);  in pxa2xx_spi_init_pdata()
1490 	ssp->phys_base = res->start;  in pxa2xx_spi_init_pdata()
1500 	ssp->clk = devm_clk_get(&pdev->dev, NULL);  in pxa2xx_spi_init_pdata()
1501 	if (IS_ERR(ssp->clk))  in pxa2xx_spi_init_pdata()
1502 		return ERR_CAST(ssp->clk);  in pxa2xx_spi_init_pdata()
1504 	ssp->irq = platform_get_irq(pdev, 0);  in pxa2xx_spi_init_pdata()
1505 	if (ssp->irq < 0)  in pxa2xx_spi_init_pdata()
1506 		return ERR_PTR(ssp->irq);  in pxa2xx_spi_init_pdata()
1508 	ssp->type = type;  in pxa2xx_spi_init_pdata()
1509 	ssp->dev = &pdev->dev;  in pxa2xx_spi_init_pdata()
1513 		ssp->port_id = -1;  in pxa2xx_spi_init_pdata()
1515 		ssp->port_id = uid;  in pxa2xx_spi_init_pdata()
1530 	if (has_acpi_companion(drv_data->ssp->dev)) {  in pxa2xx_spi_fw_translate_cs()
1560 	struct ssp_device *ssp;  in pxa2xx_spi_probe()  local
1574 	ssp = pxa_ssp_request(pdev->id, pdev->name);  in pxa2xx_spi_probe()
1575 	if (!ssp)  in pxa2xx_spi_probe()
1576 		ssp = &platform_info->ssp;  in pxa2xx_spi_probe()
1578 	if (!ssp->mmio_base) {  in pxa2xx_spi_probe()
1579 		dev_err(&pdev->dev, "failed to get SSP\n");  in pxa2xx_spi_probe()
1596 	drv_data->ssp = ssp;  in pxa2xx_spi_probe()
1603 	controller->bus_num = ssp->port_id;  in pxa2xx_spi_probe()
1616 	drv_data->ssp_type = ssp->type;  in pxa2xx_spi_probe()
1641 	status = request_irq(ssp->irq, ssp_int, IRQF_SHARED, dev_name(dev),  in pxa2xx_spi_probe()
1644 		dev_err(&pdev->dev, "cannot get IRQ %d\n", ssp->irq);  in pxa2xx_spi_probe()
1663 	status = clk_prepare_enable(ssp->clk);  in pxa2xx_spi_probe()
1667 	controller->max_speed_hz = clk_get_rate(ssp->clk);  in pxa2xx_spi_probe()
1679 	pxa_ssp_disable(ssp);  in pxa2xx_spi_probe()
1681 	/* Load default SSP configuration */  in pxa2xx_spi_probe()
1770 	clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_probe()
1774 	free_irq(ssp->irq, drv_data);  in pxa2xx_spi_probe()
1777 	pxa_ssp_free(ssp);  in pxa2xx_spi_probe()
1784 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_remove()  local
1790 	/* Disable the SSP at the peripheral and SOC level */  in pxa2xx_spi_remove()
1791 	pxa_ssp_disable(ssp);  in pxa2xx_spi_remove()
1792 	clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_remove()
1802 	free_irq(ssp->irq, drv_data);  in pxa2xx_spi_remove()
1804 	/* Release SSP */  in pxa2xx_spi_remove()
1805 	pxa_ssp_free(ssp);  in pxa2xx_spi_remove()
1814 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_suspend()  local
1821 	pxa_ssp_disable(ssp);  in pxa2xx_spi_suspend()
1824 		clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_suspend()
1832 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_resume()  local
1835 	/* Enable the SSP clock */  in pxa2xx_spi_resume()
1837 		status = clk_prepare_enable(ssp->clk);  in pxa2xx_spi_resume()
1852 	clk_disable_unprepare(drv_data->ssp->clk);  in pxa2xx_spi_runtime_suspend()
1860 	return clk_prepare_enable(drv_data->ssp->clk);  in pxa2xx_spi_runtime_resume()