aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mtd/nand/docg4.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/nand/docg4.c')
-rw-r--r--drivers/mtd/nand/docg4.c102
1 files changed, 49 insertions, 53 deletions
diff --git a/drivers/mtd/nand/docg4.c b/drivers/mtd/nand/docg4.c
index 408cf69b854b..df4165b02c62 100644
--- a/drivers/mtd/nand/docg4.c
+++ b/drivers/mtd/nand/docg4.c
@@ -242,7 +242,7 @@ static inline void write_nop(void __iomem *docptr)
static void docg4_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
{
int i;
- struct nand_chip *nand = mtd->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
uint16_t *p = (uint16_t *) buf;
len >>= 1;
@@ -253,7 +253,7 @@ static void docg4_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
static void docg4_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
{
int i;
- struct nand_chip *nand = mtd->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
uint16_t *p = (uint16_t *) buf;
len >>= 1;
@@ -297,7 +297,7 @@ static int poll_status(struct docg4_priv *doc)
static int docg4_wait(struct mtd_info *mtd, struct nand_chip *nand)
{
- struct docg4_priv *doc = nand->priv;
+ struct docg4_priv *doc = nand_get_controller_data(nand);
int status = NAND_STATUS_WP; /* inverse logic?? */
dev_dbg(doc->dev, "%s...\n", __func__);
@@ -318,8 +318,8 @@ static void docg4_select_chip(struct mtd_info *mtd, int chip)
* Select among multiple cascaded chips ("floors"). Multiple floors are
* not yet supported, so the only valid non-negative value is 0.
*/
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
dev_dbg(doc->dev, "%s: chip %d\n", __func__, chip);
@@ -337,8 +337,8 @@ static void reset(struct mtd_info *mtd)
{
/* full device reset */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
writew(DOC_ASICMODE_RESET | DOC_ASICMODE_MDWREN,
@@ -375,8 +375,8 @@ static int correct_data(struct mtd_info *mtd, uint8_t *buf, int page)
* Up to four bitflips can be corrected.
*/
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
int i, numerrs, errpos[4];
const uint8_t blank_read_hwecc[8] = {
@@ -464,8 +464,8 @@ static int correct_data(struct mtd_info *mtd, uint8_t *buf, int page)
static uint8_t docg4_read_byte(struct mtd_info *mtd)
{
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
dev_dbg(doc->dev, "%s\n", __func__);
@@ -545,8 +545,8 @@ static int pageprog(struct mtd_info *mtd)
* internal buffer out to the flash array, or some such.
*/
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
int retval = 0;
@@ -582,8 +582,8 @@ static void sequence_reset(struct mtd_info *mtd)
{
/* common starting sequence for all operations */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
writew(DOC_CTRL_UNKNOWN | DOC_CTRL_CE, docptr + DOC_FLASHCONTROL);
@@ -599,8 +599,8 @@ static void read_page_prologue(struct mtd_info *mtd, uint32_t docg4_addr)
{
/* first step in reading a page */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
dev_dbg(doc->dev,
@@ -626,8 +626,8 @@ static void write_page_prologue(struct mtd_info *mtd, uint32_t docg4_addr)
{
/* first step in writing a page */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
dev_dbg(doc->dev,
@@ -691,8 +691,8 @@ static void docg4_command(struct mtd_info *mtd, unsigned command, int column,
{
/* handle standard nand commands */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
uint32_t g4_addr = mtd_to_docg4_address(page_addr, column);
dev_dbg(doc->dev, "%s %x, page_addr=%x, column=%x\n",
@@ -756,7 +756,7 @@ static void docg4_command(struct mtd_info *mtd, unsigned command, int column,
static int read_page(struct mtd_info *mtd, struct nand_chip *nand,
uint8_t *buf, int page, bool use_ecc)
{
- struct docg4_priv *doc = nand->priv;
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
uint16_t status, edc_err, *buf16;
int bits_corrected = 0;
@@ -836,7 +836,7 @@ static int docg4_read_page(struct mtd_info *mtd, struct nand_chip *nand,
static int docg4_read_oob(struct mtd_info *mtd, struct nand_chip *nand,
int page)
{
- struct docg4_priv *doc = nand->priv;
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
uint16_t status;
@@ -874,8 +874,8 @@ static int docg4_read_oob(struct mtd_info *mtd, struct nand_chip *nand,
static int docg4_erase_block(struct mtd_info *mtd, int page)
{
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
uint16_t g4_page;
@@ -923,7 +923,7 @@ static int docg4_erase_block(struct mtd_info *mtd, int page)
static int write_page(struct mtd_info *mtd, struct nand_chip *nand,
const uint8_t *buf, bool use_ecc)
{
- struct docg4_priv *doc = nand->priv;
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
uint8_t ecc_buf[8];
@@ -1003,7 +1003,7 @@ static int docg4_write_oob(struct mtd_info *mtd, struct nand_chip *nand,
*/
/* note that bytes 7..14 are hw generated hamming/ecc and overwritten */
- struct docg4_priv *doc = nand->priv;
+ struct docg4_priv *doc = nand_get_controller_data(nand);
doc->oob_page = page;
memcpy(doc->oob_buf, nand->oob_poi, 16);
return 0;
@@ -1016,8 +1016,8 @@ static int __init read_factory_bbt(struct mtd_info *mtd)
* update the memory-based bbt accordingly.
*/
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
uint32_t g4_addr = mtd_to_docg4_address(DOCG4_FACTORY_BBT_PAGE, 0);
uint8_t *buf;
int i, block;
@@ -1089,8 +1089,8 @@ static int docg4_block_markbad(struct mtd_info *mtd, loff_t ofs)
int ret, i;
uint8_t *buf;
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
struct nand_bbt_descr *bbtd = nand->badblock_pattern;
int page = (int)(ofs >> nand->page_shift);
uint32_t g4_addr = mtd_to_docg4_address(page, 0);
@@ -1202,8 +1202,8 @@ static void __init init_mtd_structs(struct mtd_info *mtd)
* things as well, such as call nand_set_defaults().
*/
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
mtd->size = DOCG4_CHIP_SIZE;
mtd->name = "Msys_Diskonchip_G4";
@@ -1261,8 +1261,8 @@ static void __init init_mtd_structs(struct mtd_info *mtd)
static int __init read_id_reg(struct mtd_info *mtd)
{
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
+ struct nand_chip *nand = mtd_to_nand(mtd);
+ struct docg4_priv *doc = nand_get_controller_data(nand);
void __iomem *docptr = doc->virtadr;
uint16_t id1, id2;
@@ -1305,17 +1305,16 @@ static int __init probe_docg4(struct platform_device *pdev)
return -EIO;
}
- len = sizeof(struct mtd_info) + sizeof(struct nand_chip) +
- sizeof(struct docg4_priv);
- mtd = kzalloc(len, GFP_KERNEL);
- if (mtd == NULL) {
+ len = sizeof(struct nand_chip) + sizeof(struct docg4_priv);
+ nand = kzalloc(len, GFP_KERNEL);
+ if (nand == NULL) {
retval = -ENOMEM;
- goto fail;
+ goto fail_unmap;
}
- nand = (struct nand_chip *) (mtd + 1);
+
+ mtd = nand_to_mtd(nand);
doc = (struct docg4_priv *) (nand + 1);
- mtd->priv = nand;
- nand->priv = doc;
+ nand_set_controller_data(nand, doc);
mtd->dev.parent = &pdev->dev;
doc->virtadr = virtadr;
doc->dev = dev;
@@ -1353,16 +1352,13 @@ static int __init probe_docg4(struct platform_device *pdev)
doc->mtd = mtd;
return 0;
- fail:
+fail:
+ nand_release(mtd); /* deletes partitions and mtd devices */
+ free_bch(doc->bch);
+ kfree(nand);
+
+fail_unmap:
iounmap(virtadr);
- if (mtd) {
- /* re-declarations avoid compiler warning */
- struct nand_chip *nand = mtd->priv;
- struct docg4_priv *doc = nand->priv;
- nand_release(mtd); /* deletes partitions and mtd devices */
- free_bch(doc->bch);
- kfree(mtd);
- }
return retval;
}
@@ -1372,7 +1368,7 @@ static int __exit cleanup_docg4(struct platform_device *pdev)
struct docg4_priv *doc = platform_get_drvdata(pdev);
nand_release(doc->mtd);
free_bch(doc->bch);
- kfree(doc->mtd);
+ kfree(mtd_to_nand(doc->mtd));
iounmap(doc->virtadr);
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.