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| author |   Allen Xu <b45815@freescale.com> | 2015-01-13 04:56:40 +0800 |
|---|---|---|
| committer |   Brian Norris <computersforpeace@gmail.com> | 2015-01-15 19:30:30 -0800 |
| commit | 45c6a0caeb2bde9e043bcd833af322db57a37498 (patch) | |
| tree | 5ee56173e088019b4f92e39bcc16ad6b78f1816b /drivers/mtd | |
| parent | mtd: denali: fix incorrect bitmask error in denali_setup_dma (diff) | |
| download | linux-dev-45c6a0caeb2bde9e043bcd833af322db57a37498.tar.xz linux-dev-45c6a0caeb2bde9e043bcd833af322db57a37498.zip | |
mtd: spi-nor: fsl-qspi: support deep sleep mode for imx6 sx chip
i.mx6 sx support turn off fastmix and megamix power.
qpsi controller can be turned off and all status lost when suspend/resume.
add suspend/resume functions and reset qspi controller when resume.
Signed-off-by: Allen Xu <b45815@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Acked-by: Huang Shijie <shijie.huang@intel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/fsl-quadspi.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 39763b94f67d..9d6080079a45 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -972,6 +972,22 @@ 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", @@ -980,6 +996,8 @@ 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); |