diff options
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
| -rw-r--r-- | drivers/spi/spi-pxa2xx.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 90b27a3508a..f5d84d6f822 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -22,6 +22,7 @@ #include <linux/device.h> #include <linux/ioport.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/spi/pxa2xx_spi.h> @@ -68,6 +69,7 @@ MODULE_ALIAS("platform:pxa2xx-spi"); #define LPSS_TX_HITHRESH_DFLT 224 /* Offset from drv_data->lpss_base */ +#define SSP_REG 0x0c #define SPI_CS_CONTROL 0x18 #define SPI_CS_CONTROL_SW_MODE BIT(0) #define SPI_CS_CONTROL_CS_HIGH BIT(1) @@ -138,6 +140,10 @@ detection_done: /* Enable software chip select control */ value = SPI_CS_CONTROL_SW_MODE | SPI_CS_CONTROL_CS_HIGH; __lpss_ssp_write_priv(drv_data, SPI_CS_CONTROL, value); + + /* Enable multiblock DMA transfers */ + if (drv_data->master_info->enable_dma) + __lpss_ssp_write_priv(drv_data, SSP_REG, 1); } static void lpss_ssp_cs_control(struct driver_data *drv_data, bool enable) @@ -1083,11 +1089,9 @@ pxa2xx_spi_acpi_get_pdata(struct platform_device *pdev) ssp = &pdata->ssp; ssp->phys_base = res->start; - ssp->mmio_base = devm_request_and_ioremap(&pdev->dev, res); - if (!ssp->mmio_base) { - dev_err(&pdev->dev, "failed to ioremap mmio_base\n"); - return NULL; - } + ssp->mmio_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ssp->mmio_base)) + return PTR_ERR(ssp->mmio_base); ssp->clk = devm_clk_get(&pdev->dev, NULL); ssp->irq = platform_get_irq(pdev, 0); @@ -1168,7 +1172,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->dev.parent = &pdev->dev; master->dev.of_node = pdev->dev.of_node; - ACPI_HANDLE_SET(&master->dev, ACPI_HANDLE(&pdev->dev)); /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; |