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path: root/drivers/mtd/nand/fsmc_nand.c
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Diffstat (limited to 'drivers/mtd/nand/fsmc_nand.c')
-rw-r--r--drivers/mtd/nand/fsmc_nand.c26
1 files changed, 15 insertions, 11 deletions
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 1b8330e1155..38d26240d8b 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -692,6 +692,7 @@ static void fsmc_write_buf_dma(struct mtd_info *mtd, const uint8_t *buf,
* @mtd: mtd info structure
* @chip: nand chip info structure
* @buf: buffer to store read data
+ * @oob_required: caller expects OOB data read to chip->oob_poi
* @page: page number to read
*
* This routine is needed for fsmc version 8 as reading from NAND chip has to be
@@ -701,7 +702,7 @@ static void fsmc_write_buf_dma(struct mtd_info *mtd, const uint8_t *buf,
* max of 8 bits)
*/
static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
- uint8_t *buf, int page)
+ uint8_t *buf, int oob_required, int page)
{
struct fsmc_nand_data *host = container_of(mtd,
struct fsmc_nand_data, mtd);
@@ -720,6 +721,7 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
*/
uint16_t ecc_oob[7];
uint8_t *oob = (uint8_t *)&ecc_oob[0];
+ unsigned int max_bitflips = 0;
for (i = 0, s = 0; s < eccsteps; s++, i += eccbytes, p += eccsize) {
chip->cmdfunc(mtd, NAND_CMD_READ0, s * eccsize, page);
@@ -748,13 +750,15 @@ static int fsmc_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
chip->ecc.calculate(mtd, p, &ecc_calc[i]);
stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
- if (stat < 0)
+ if (stat < 0) {
mtd->ecc_stats.failed++;
- else
+ } else {
mtd->ecc_stats.corrected += stat;
+ max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ }
}
- return 0;
+ return max_bitflips;
}
/*
@@ -994,9 +998,9 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
return PTR_ERR(host->clk);
}
- ret = clk_enable(host->clk);
+ ret = clk_prepare_enable(host->clk);
if (ret)
- goto err_clk_enable;
+ goto err_clk_prepare_enable;
/*
* This device ID is actually a common AMBA ID as used on the
@@ -1176,8 +1180,8 @@ err_req_write_chnl:
if (host->mode == USE_DMA_ACCESS)
dma_release_channel(host->read_dma_chan);
err_req_read_chnl:
- clk_disable(host->clk);
-err_clk_enable:
+ clk_disable_unprepare(host->clk);
+err_clk_prepare_enable:
clk_put(host->clk);
return ret;
}
@@ -1198,7 +1202,7 @@ static int fsmc_nand_remove(struct platform_device *pdev)
dma_release_channel(host->write_dma_chan);
dma_release_channel(host->read_dma_chan);
}
- clk_disable(host->clk);
+ clk_disable_unprepare(host->clk);
clk_put(host->clk);
}
@@ -1210,7 +1214,7 @@ static int fsmc_nand_suspend(struct device *dev)
{
struct fsmc_nand_data *host = dev_get_drvdata(dev);
if (host)
- clk_disable(host->clk);
+ clk_disable_unprepare(host->clk);
return 0;
}
@@ -1218,7 +1222,7 @@ static int fsmc_nand_resume(struct device *dev)
{
struct fsmc_nand_data *host = dev_get_drvdata(dev);
if (host) {
- clk_enable(host->clk);
+ clk_prepare_enable(host->clk);
fsmc_nand_setup(host->regs_va, host->bank,
host->nand.options & NAND_BUSWIDTH_16,
host->dev_timings);