diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-01-26 16:10:56 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-02-05 18:56:12 +0300 |
| commit | ab3ab7b654ae69a9c5c259ecd281543c6234437f (patch) | |
| tree | 81c685adb3c17c837fde36f92fc9bc3b5d4e55f6 | |
| parent | 30c72ab142a2d1a49d5fbd4014864cec07cd7a65 (diff) | |
| download | linux-ab3ab7b654ae69a9c5c259ecd281543c6234437f.tar.xz | |
mtd: rawnand: fsmc: Disable NAND on remove()
This disables the NAND on remove() and the errorpath,
making sure the chipselect gets deasserted when the
NAND is not in use.
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
| -rw-r--r-- | drivers/mtd/nand/raw/fsmc_nand.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 9dc0e5b648b1..0c31089215d4 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -986,6 +986,19 @@ static const struct nand_controller_ops fsmc_nand_controller_ops = { .setup_data_interface = fsmc_setup_data_interface, }; +/** + * fsmc_nand_disable() - Disables the NAND bank + * @host: The instance to disable + */ +static void fsmc_nand_disable(struct fsmc_nand_data *host) +{ + u32 val; + + val = readl(host->regs_va + FSMC_PC); + val &= ~FSMC_ENABLE; + writel(val, host->regs_va + FSMC_PC); +} + /* * fsmc_nand_probe - Probe function * @pdev: platform device structure @@ -1141,6 +1154,7 @@ release_dma_read_chan: if (host->mode == USE_DMA_ACCESS) dma_release_channel(host->read_dma_chan); disable_clk: + fsmc_nand_disable(host); clk_disable_unprepare(host->clk); return ret; @@ -1155,6 +1169,7 @@ static int fsmc_nand_remove(struct platform_device *pdev) if (host) { nand_release(&host->nand); + fsmc_nand_disable(host); if (host->mode == USE_DMA_ACCESS) { dma_release_channel(host->write_dma_chan); |