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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 16:38:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 16:38:41 -0700
commit61f3d0a9883d965b498edeb673235bddc92770fd (patch)
treefa1e394cd1d5332f4a205d12f0db88320bc83813 /drivers/spi/spi-pxa2xx.c
parent8ded8d4e4facab78acf616bc34085ddd15c2c21c (diff)
parentcd8d984f0def2a8c5733a9468634ec3e0feec03d (diff)
downloadlinux-linaro-stable-61f3d0a9883d965b498edeb673235bddc92770fd.tar.gz
Merge tag 'spi-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown: "A fairly quiet release for SPI, mainly driver work. A few highlights: - Supports bits per word compatibility checking in the core. - Allow use of the IP used in Freescale SPI controllers outside Freescale SoCs. - DMA support for the Atmel SPI driver. - New drivers for the BCM2835 and Tegra114" * tag 'spi-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (68 commits) spi-topcliff-pch: fix to use list_for_each_entry_safe() when delete list items spi-topcliff-pch: missing platform_driver_unregister() on error in pch_spi_init() ARM: dts: add pinctrl property for spi node for atmel SoC ARM: dts: add spi nodes for the atmel boards ARM: dts: add spi nodes for atmel SoC ARM: at91: add clocks for spi dt entries spi/spi-atmel: add dmaengine support spi/spi-atmel: add flag to controller data for lock operations spi/spi-atmel: add physical base address spi/sirf: fix MODULE_DEVICE_TABLE MAINTAINERS: Add git repository and update my address spi/s3c64xx: Check for errors in dmaengine prepare_transfer() spi/s3c64xx: Fix non-dmaengine usage spi: omap2-mcspi: fix error return code in omap2_mcspi_probe() spi/s3c64xx: let device core setup the default pin configuration MAINTAINERS: Update Grant's email address and maintainership spi: omap2-mcspi: Fix transfers if DMADEVICES is not set spi: s3c64xx: move to generic dmaengine API spi-gpio: init CS before spi_bitbang_setup() spi: spi-mpc512x-psc: let transmiter/receiver enabled when in xfer loop ...
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
-rw-r--r--drivers/spi/spi-pxa2xx.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 810413883c79..f5d84d6f8222 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);