Merge branch 'common/pfc' into common/pinctrl

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / mtd / nand / cafe_nand.c

diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c
index 2a96e1a12062314234f2cd74b86163029abc3e3d..f3f6cfedd69eb5e1367c196de7e8e249740bb77b 100644 (file)
--- a/drivers/mtd/nand/cafe_nand.c
+++ b/drivers/mtd/nand/cafe_nand.c
@@ -102,7 +102,7 @@ static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };
 static int cafe_device_ready(struct mtd_info *mtd)
 {
        struct cafe_priv *cafe = mtd->priv;
-       int result = !!(cafe_readl(cafe, NAND_STATUS) | 0x40000000);
+       int result = !!(cafe_readl(cafe, NAND_STATUS) & 0x40000000);
        uint32_t irqs = cafe_readl(cafe, NAND_IRQ);
 
        cafe_writel(cafe, irqs, NAND_IRQ);
@@ -364,25 +364,27 @@ static int cafe_nand_write_oob(struct mtd_info *mtd,
 
 /* Don't use -- use nand_read_oob_std for now */
 static int cafe_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
-                             int page, int sndcmd)
+                             int page)
 {
        chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
        chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
-       return 1;
+       return 0;
 }
 /**
  * cafe_nand_read_page_syndrome - [REPLACEABLE] hardware ecc syndrome based page read
  * @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
  *
  * The hw generator calculates the error syndrome automatically. Therefor
  * we need a special oob layout and handling.
  */
 static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
-                              uint8_t *buf, int page)
+                              uint8_t *buf, int oob_required, int page)
 {
        struct cafe_priv *cafe = mtd->priv;
+       unsigned int max_bitflips = 0;
 
        cafe_dev_dbg(&cafe->pdev->dev, "ECC result %08x SYN1,2 %08x\n",
                     cafe_readl(cafe, NAND_ECC_RESULT),
@@ -449,10 +451,11 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
                } else {
                        dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", n);
                        mtd->ecc_stats.corrected += n;
+                       max_bitflips = max_t(unsigned int, max_bitflips, n);
                }
        }
 
-       return 0;
+       return max_bitflips;
 }
 
 static struct nand_ecclayout cafe_oobinfo_2048 = {
@@ -518,7 +521,8 @@ static struct nand_bbt_descr cafe_bbt_mirror_descr_512 = {
 
 
 static void cafe_nand_write_page_lowlevel(struct mtd_info *mtd,
-                                         struct nand_chip *chip, const uint8_t *buf)
+                                         struct nand_chip *chip,
+                                         const uint8_t *buf, int oob_required)
 {
        struct cafe_priv *cafe = mtd->priv;
 
@@ -530,16 +534,17 @@ static void cafe_nand_write_page_lowlevel(struct mtd_info *mtd,
 }
 
 static int cafe_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,
-                               const uint8_t *buf, int page, int cached, int raw)
+                               const uint8_t *buf, int oob_required, int page,
+                               int cached, int raw)
 {
        int status;
 
        chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page);
 
        if (unlikely(raw))
-               chip->ecc.write_page_raw(mtd, chip, buf);
+               chip->ecc.write_page_raw(mtd, chip, buf, oob_required);
        else
-               chip->ecc.write_page(mtd, chip, buf);
+               chip->ecc.write_page(mtd, chip, buf, oob_required);
 
        /*
         * Cached progamming disabled for now, Not sure if its worth the
@@ -685,7 +690,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
 
        /* Enable the following for a flash based bad block table */
        cafe->nand.bbt_options = NAND_BBT_USE_FLASH;
-       cafe->nand.options = NAND_NO_AUTOINCR | NAND_OWN_BUFFERS;
+       cafe->nand.options = NAND_OWN_BUFFERS;
 
        if (skipbbt) {
                cafe->nand.options |= NAND_SKIP_BBTSCAN;
@@ -888,17 +893,7 @@ static struct pci_driver cafe_nand_pci_driver = {
        .resume = cafe_nand_resume,
 };
 
-static int __init cafe_nand_init(void)
-{
-       return pci_register_driver(&cafe_nand_pci_driver);
-}
-
-static void __exit cafe_nand_exit(void)
-{
-       pci_unregister_driver(&cafe_nand_pci_driver);
-}
-module_init(cafe_nand_init);
-module_exit(cafe_nand_exit);
+module_pci_driver(cafe_nand_pci_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");