34 MODULE_DESCRIPTION("PXA2xx SSP SPI Controller");
41  * For testing SSCR1 changes that require SSP restart, basically
308  * Read and write LPSS SSP private registers. Caller must first check that
325  * lpss_ssp_setup - perform LPSS SSP specific setup
328  * Perform LPSS SSP specific setup. This function must be called first if
329  * one is going to use LPSS SSP private registers.
337 	drv_data->lpss_base = drv_data->ssp->mmio_base + config->offset;  in lpss_ssp_setup()
449 	/* Wait until SSP becomes idle before deasserting the CS */  in cs_deassert()
486 	pxa_ssp_disable(drv_data->ssp);  in pxa2xx_spi_off()
625 	dev_err(drv_data->ssp->dev, "%s\n", msg);  in int_error_stop()
721 	dev_err(drv_data->ssp->dev, "bad message state in interrupt handler\n");  in handle_bad_msg()
737 	if (pm_runtime_suspended(drv_data->ssp->dev))  in ssp_int()
899 	const struct ssp_device *ssp = drv_data->ssp;  in ssp_get_clk_div()  local
905 	 * that the SSP transmission rate can be greater than the device rate.  in ssp_get_clk_div()
907 	if (ssp->type == PXA25x_SSP || ssp->type == CE4100_SSP)  in ssp_get_clk_div()
1077 	/* Stop the SSP */  in pxa2xx_spi_transfer_one()
1079 		pxa_ssp_disable(drv_data->ssp);  in pxa2xx_spi_transfer_one()
1090 	/* Restart the SSP */  in pxa2xx_spi_transfer_one()
1091 	pxa_ssp_enable(drv_data->ssp);  in pxa2xx_spi_transfer_one()
1140 	/* Disable the SSP */  in pxa2xx_spi_handle_err()
1158 	/* Disable the SSP now */  in pxa2xx_spi_unprepare_transfer()
1335 	struct ssp_device *ssp;  in pxa2xx_spi_init_pdata()  local
1358 	/* Validate the SSP type correctness */  in pxa2xx_spi_init_pdata()
1366 	ssp = &pdata->ssp;  in pxa2xx_spi_init_pdata()
1368 	ssp->mmio_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);  in pxa2xx_spi_init_pdata()
1369 	if (IS_ERR(ssp->mmio_base))  in pxa2xx_spi_init_pdata()
1370 		return ERR_CAST(ssp->mmio_base);  in pxa2xx_spi_init_pdata()
1372 	ssp->phys_base = res->start;  in pxa2xx_spi_init_pdata()
1381 	ssp->clk = devm_clk_get(dev, NULL);  in pxa2xx_spi_init_pdata()
1382 	if (IS_ERR(ssp->clk))  in pxa2xx_spi_init_pdata()
1383 		return ERR_CAST(ssp->clk);  in pxa2xx_spi_init_pdata()
1385 	ssp->irq = platform_get_irq(pdev, 0);  in pxa2xx_spi_init_pdata()
1386 	if (ssp->irq < 0)  in pxa2xx_spi_init_pdata()
1387 		return ERR_PTR(ssp->irq);  in pxa2xx_spi_init_pdata()
1389 	ssp->type = type;  in pxa2xx_spi_init_pdata()
1390 	ssp->dev = dev;  in pxa2xx_spi_init_pdata()
1394 		ssp->port_id = -1;  in pxa2xx_spi_init_pdata()
1396 		ssp->port_id = uid;  in pxa2xx_spi_init_pdata()
1411 	if (has_acpi_companion(drv_data->ssp->dev)) {  in pxa2xx_spi_fw_translate_cs()
1441 	struct ssp_device *ssp;  in pxa2xx_spi_probe()  local
1455 	ssp = pxa_ssp_request(pdev->id, pdev->name);  in pxa2xx_spi_probe()
1456 	if (!ssp)  in pxa2xx_spi_probe()
1457 		ssp = &platform_info->ssp;  in pxa2xx_spi_probe()
1459 	if (!ssp->mmio_base) {  in pxa2xx_spi_probe()
1460 		dev_err(&pdev->dev, "failed to get SSP\n");  in pxa2xx_spi_probe()
1477 	drv_data->ssp = ssp;  in pxa2xx_spi_probe()
1484 	controller->bus_num = ssp->port_id;  in pxa2xx_spi_probe()
1497 	drv_data->ssp_type = ssp->type;  in pxa2xx_spi_probe()
1522 	status = request_irq(ssp->irq, ssp_int, IRQF_SHARED, dev_name(dev),  in pxa2xx_spi_probe()
1525 		dev_err(&pdev->dev, "cannot get IRQ %d\n", ssp->irq);  in pxa2xx_spi_probe()
1544 	status = clk_prepare_enable(ssp->clk);  in pxa2xx_spi_probe()
1548 	controller->max_speed_hz = clk_get_rate(ssp->clk);  in pxa2xx_spi_probe()
1560 	pxa_ssp_disable(ssp);  in pxa2xx_spi_probe()
1562 	/* Load default SSP configuration */  in pxa2xx_spi_probe()
1651 	clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_probe()
1655 	free_irq(ssp->irq, drv_data);  in pxa2xx_spi_probe()
1658 	pxa_ssp_free(ssp);  in pxa2xx_spi_probe()
1665 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_remove()  local
1671 	/* Disable the SSP at the peripheral and SOC level */  in pxa2xx_spi_remove()
1672 	pxa_ssp_disable(ssp);  in pxa2xx_spi_remove()
1673 	clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_remove()
1683 	free_irq(ssp->irq, drv_data);  in pxa2xx_spi_remove()
1685 	/* Release SSP */  in pxa2xx_spi_remove()
1686 	pxa_ssp_free(ssp);  in pxa2xx_spi_remove()
1692 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_suspend()  local
1699 	pxa_ssp_disable(ssp);  in pxa2xx_spi_suspend()
1702 		clk_disable_unprepare(ssp->clk);  in pxa2xx_spi_suspend()
1710 	struct ssp_device *ssp = drv_data->ssp;  in pxa2xx_spi_resume()  local
1713 	/* Enable the SSP clock */  in pxa2xx_spi_resume()
1715 		status = clk_prepare_enable(ssp->clk);  in pxa2xx_spi_resume()
1728 	clk_disable_unprepare(drv_data->ssp->clk);  in pxa2xx_spi_runtime_suspend()
1736 	return clk_prepare_enable(drv_data->ssp->clk);  in pxa2xx_spi_runtime_resume()
1758 	{ .compatible = "marvell,mmp2-ssp", .data = (void *)MMP2_SSP },