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mtd: mxc_nand: split chip_select function and put it into devtype struct 

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 11:23:38 +02:00 committed by David Woodhouse
parent 6dcdf99dfa
commit 5e05a2d695
1 changed files with 29 additions and 6 deletions
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35
drivers/mtd/nand/mxc_nand.c
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@ -153,6 +153,7 @@ struct mxc_nand_devtype_data {
void (*irq_control)(struct mxc_nand_host *, int);
u32 (*get_ecc_status)(struct mxc_nand_host *);
struct nand_ecclayout *ecclayout_512, *ecclayout_2k, *ecclayout_4k;
void (*select_chip)(struct mtd_info *mtd, int chip);
};
struct mxc_nand_host {
@ -721,7 +722,28 @@ static int mxc_nand_verify_buf(struct mtd_info *mtd,
/* This function is used by upper layer for select and
* deselect of the NAND chip */
static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)
static void mxc_nand_select_chip_v1_v3(struct mtd_info *mtd, int chip)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
if (chip == -1) {
/* Disable the NFC clock */
if (host->clk_act) {
clk_disable(host->clk);
host->clk_act = 0;
}
return;
}
if (!host->clk_act) {
/* Enable the NFC clock */
clk_enable(host->clk);
host->clk_act = 1;
}
}
static void mxc_nand_select_chip_v2(struct mtd_info *mtd, int chip)
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
@ -741,10 +763,8 @@ static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)
host->clk_act = 1;
}
if (nfc_is_v21()) {
host->active_cs = chip;
writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR);
}
host->active_cs = chip;
writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR);
}
/*
@ -1117,6 +1137,7 @@ static const struct mxc_nand_devtype_data imx21_nand_devtype_data = {
.ecclayout_512 = &nandv1_hw_eccoob_smallpage,
.ecclayout_2k = &nandv1_hw_eccoob_largepage,
.ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */
.select_chip = mxc_nand_select_chip_v1_v3,
};
/* v21: i.MX25, i.MX35 */
@ -1133,6 +1154,7 @@ static const struct mxc_nand_devtype_data imx25_nand_devtype_data = {
.ecclayout_512 = &nandv2_hw_eccoob_smallpage,
.ecclayout_2k = &nandv2_hw_eccoob_largepage,
.ecclayout_4k = &nandv2_hw_eccoob_4k,
.select_chip = mxc_nand_select_chip_v2,
};
/* v3: i.MX51, i.MX53 */
@ -1149,6 +1171,7 @@ static const struct mxc_nand_devtype_data imx51_nand_devtype_data = {
.ecclayout_512 = &nandv2_hw_eccoob_smallpage,
.ecclayout_2k = &nandv2_hw_eccoob_largepage,
.ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */
.select_chip = mxc_nand_select_chip_v1_v3,
};
static int __init mxcnd_probe(struct platform_device *pdev)
@ -1183,7 +1206,6 @@ static int __init mxcnd_probe(struct platform_device *pdev)
this->priv = host;
this->dev_ready = mxc_nand_dev_ready;
this->cmdfunc = mxc_nand_command;
this->select_chip = mxc_nand_select_chip;
this->read_byte = mxc_nand_read_byte;
this->read_word = mxc_nand_read_word;
this->write_buf = mxc_nand_write_buf;
@ -1246,6 +1268,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
} else
BUG();
this->select_chip = host->devtype_data->select_chip;
this->ecc.size = 512;
this->ecc.layout = host->devtype_data->ecclayout_512;