ENGR00319582 iMX6SX: qspi code change to support DSM

add suspend/resume functions and reset qspi controller when resume.

Signed-off-by: Allen Xu <b45815@freescale.com>
(cherry picked from commit cdea16036e968fe2f1011339dfef476e347fb725)

diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index 101ffb1fec93f9f927f25c7eb9bedf05234d288a..6afa9064ad04a523e3b4f0f09298edff14c620cc 100644 (file)
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -1058,6 +1058,22 @@ static int fsl_qspi_remove(struct platform_device *pdev)
        return 0;
 }
 
+static int fsl_qspi_suspend(struct platform_device *pdev, pm_message_t state)
+{
+       return 0;
+}
+
+static int fsl_qspi_resume(struct platform_device *pdev)
+{
+       struct fsl_qspi *q = platform_get_drvdata(pdev);
+
+       fsl_qspi_nor_setup(q);
+       fsl_qspi_set_map_addr(q);
+       fsl_qspi_nor_setup_last(q);
+
+       return 0;
+}
+
 static struct platform_driver fsl_qspi_driver = {
        .driver = {
                .name   = "fsl-quadspi",
@@ -1067,6 +1083,8 @@ static struct platform_driver fsl_qspi_driver = {
        },
        .probe          = fsl_qspi_probe,
        .remove         = fsl_qspi_remove,
+       .suspend        = fsl_qspi_suspend,
+       .resume         = fsl_qspi_resume,
 };
 module_platform_driver(fsl_qspi_driver);