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mtd: mxc_nand: split some functions to get rid of more nfc_is_vX()

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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Uwe Kleine-König 2012-04-23 11:23:36 +02:00 committed by David Woodhouse
parent e4303b25f4
commit 6d38af255a
1 changed files with 80 additions and 29 deletions
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109
drivers/mtd/nand/mxc_nand.c
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@ -151,6 +151,7 @@ struct mxc_nand_devtype_data {
uint16_t (*get_dev_status)(struct mxc_nand_host *);
int (*check_int)(struct mxc_nand_host *);
void (*irq_control)(struct mxc_nand_host *, int);
u32 (*get_ecc_status)(struct mxc_nand_host *);
};
struct mxc_nand_host {
@ -325,6 +326,21 @@ static void irq_control(struct mxc_nand_host *host, int activate)
}
}
static u32 get_ecc_status_v1(struct mxc_nand_host *host)
{
return readw(NFC_V1_V2_ECC_STATUS_RESULT);
}
static u32 get_ecc_status_v2(struct mxc_nand_host *host)
{
return readl(NFC_V1_V2_ECC_STATUS_RESULT);
}
static u32 get_ecc_status_v3(struct mxc_nand_host *host)
{
return readl(NFC_V3_ECC_STATUS_RESULT);
}
static irqreturn_t mxc_nfc_irq(int irq, void *dev_id)
{
struct mxc_nand_host *host = dev_id;
@ -444,13 +460,27 @@ static void send_page_v3(struct mtd_info *mtd, unsigned int ops)
wait_op_done(host, false);
}
static void send_page_v1_v2(struct mtd_info *mtd, unsigned int ops)
static void send_page_v2(struct mtd_info *mtd, unsigned int ops)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
/* NANDFC buffer 0 is used for page read/write */
writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR);
writew(ops, NFC_V1_V2_CONFIG2);
/* Wait for operation to complete */
wait_op_done(host, true);
}
static void send_page_v1(struct mtd_info *mtd, unsigned int ops)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
int bufs, i;
if (nfc_is_v1() && mtd->writesize > 512)
if (mtd->writesize > 512)
bufs = 4;
else
bufs = 1;
@ -566,7 +596,7 @@ static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat,
* additional correction. 2-Bit errors cannot be corrected by
* HW ECC, so we need to return failure
*/
uint16_t ecc_status = readw(NFC_V1_V2_ECC_STATUS_RESULT);
uint16_t ecc_status = get_ecc_status_v1(host);
if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) {
pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n");
@ -591,10 +621,7 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat,
no_subpages = mtd->writesize >> 9;
if (nfc_is_v21())
ecc_stat = readl(NFC_V1_V2_ECC_STATUS_RESULT);
else
ecc_stat = readl(NFC_V3_ECC_STATUS_RESULT);
ecc_stat = host->devtype_data->get_ecc_status(host);
do {
err = ecc_stat & ecc_bit_mask;
@ -821,7 +848,7 @@ static int get_eccsize(struct mtd_info *mtd)
return 8;
}
static void preset_v1_v2(struct mtd_info *mtd)
static void preset_v1(struct mtd_info *mtd)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
@ -830,13 +857,40 @@ static void preset_v1_v2(struct mtd_info *mtd)
if (nand_chip->ecc.mode == NAND_ECC_HW)
config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
if (nfc_is_v21())
config1 |= NFC_V2_CONFIG1_FP_INT;
if (!host->irqpending_quirk)
config1 |= NFC_V1_V2_CONFIG1_INT_MSK;
host->eccsize = 1;
writew(config1, NFC_V1_V2_CONFIG1);
/* preset operation */
/* Unlock the internal RAM Buffer */
writew(0x2, NFC_V1_V2_CONFIG);
/* Blocks to be unlocked */
writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR);
writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR);
/* Unlock Block Command for given address range */
writew(0x4, NFC_V1_V2_WRPROT);
}
static void preset_v2(struct mtd_info *mtd)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
uint16_t config1 = 0;
if (nand_chip->ecc.mode == NAND_ECC_HW)
config1 |= NFC_V1_V2_CONFIG1_ECC_EN;
config1 |= NFC_V2_CONFIG1_FP_INT;
if (!host->irqpending_quirk)
config1 |= NFC_V1_V2_CONFIG1_INT_MSK;
if (nfc_is_v21() && mtd->writesize) {
if (mtd->writesize) {
uint16_t pages_per_block = mtd->erasesize / mtd->writesize;
host->eccsize = get_eccsize(mtd);
@ -855,20 +909,14 @@ static void preset_v1_v2(struct mtd_info *mtd)
writew(0x2, NFC_V1_V2_CONFIG);
/* Blocks to be unlocked */
if (nfc_is_v21()) {
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR3);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR0);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3);
} else if (nfc_is_v1()) {
writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR);
writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR);
} else
BUG();
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2);
writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR3);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR0);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2);
writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3);
/* Unlock Block Command for given address range */
writew(0x4, NFC_V1_V2_WRPROT);
@ -1056,26 +1104,28 @@ static struct nand_bbt_descr bbt_mirror_descr = {
/* v1: i.MX21, i.MX27, i.MX31 */
static const struct mxc_nand_devtype_data imx21_nand_devtype_data = {
.preset = preset_v1_v2,
.preset = preset_v1,
.send_cmd = send_cmd_v1_v2,
.send_addr = send_addr_v1_v2,
.send_page = send_page_v1_v2,
.send_page = send_page_v1,
.send_read_id = send_read_id_v1_v2,
.get_dev_status = get_dev_status_v1_v2,
.check_int = check_int_v1_v2,
.irq_control = irq_control_v1_v2,
.get_ecc_status = get_ecc_status_v1,
};
/* v21: i.MX25, i.MX35 */
static const struct mxc_nand_devtype_data imx25_nand_devtype_data = {
.preset = preset_v1_v2,
.preset = preset_v2,
.send_cmd = send_cmd_v1_v2,
.send_addr = send_addr_v1_v2,
.send_page = send_page_v1_v2,
.send_page = send_page_v2,
.send_read_id = send_read_id_v1_v2,
.get_dev_status = get_dev_status_v1_v2,
.check_int = check_int_v1_v2,
.irq_control = irq_control_v1_v2,
.get_ecc_status = get_ecc_status_v2,
};
/* v3: i.MX51, i.MX53 */
@ -1088,6 +1138,7 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = {
.get_dev_status = get_dev_status_v3,
.check_int = check_int_v3,
.irq_control = irq_control_v3,
.get_ecc_status = get_ecc_status_v3,
};
static int __init mxcnd_probe(struct platform_device *pdev)