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path: root/drivers/mtd/nand/raw/fsmc_nand.c
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Diffstat (limited to 'drivers/mtd/nand/raw/fsmc_nand.c')
-rw-r--r--drivers/mtd/nand/raw/fsmc_nand.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c
index c9149a37f8f0..6c7ca41354be 100644
--- a/drivers/mtd/nand/raw/fsmc_nand.c
+++ b/drivers/mtd/nand/raw/fsmc_nand.c
@@ -965,6 +965,19 @@ 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
@@ -1120,6 +1133,7 @@ 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;
@@ -1134,6 +1148,7 @@ 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);
@@ -1164,6 +1179,7 @@ static int fsmc_nand_resume(struct device *dev)
clk_prepare_enable(host->clk);
if (host->dev_timings)
fsmc_nand_setup(host, host->dev_timings);
+ nand_reset(&host->nand, 0);
}
return 0;