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mtd: rawnand: stm32_fmc2: use clrsetbits_le32

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This patch uses clrsetbits_le32 function instead of multiple instructions.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Christophe Kerello 2020-07-31 09:53:39 +02:00 committed by Patrice Chotard
parent 158f2d44a7
commit 834b85c9e8
1 changed files with 21 additions and 35 deletions
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56
drivers/mtd/nand/raw/stm32_fmc2_nand.c
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@ -178,40 +178,37 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
struct stm32_fmc2_nand *nand = to_fmc2_nand(chip);
struct stm32_fmc2_timings *timings = &nand->timings;
u32 pcr = readl(nfc->io_base + FMC2_PCR);
u32 pmem, patt;
/* Set tclr/tar timings */
pcr &= ~FMC2_PCR_TCLR;
pcr |= FIELD_PREP(FMC2_PCR_TCLR, timings->tclr);
pcr &= ~FMC2_PCR_TAR;
pcr |= FIELD_PREP(FMC2_PCR_TAR, timings->tar);
clrsetbits_le32(nfc->io_base + FMC2_PCR,
FMC2_PCR_TCLR | FMC2_PCR_TAR,
FIELD_PREP(FMC2_PCR_TCLR, timings->tclr) |
FIELD_PREP(FMC2_PCR_TAR, timings->tar));
/* Set tset/twait/thold/thiz timings in common bank */
pmem = FIELD_PREP(FMC2_PMEM_MEMSET, timings->tset_mem);
pmem |= FIELD_PREP(FMC2_PMEM_MEMWAIT, timings->twait);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHOLD, timings->thold_mem);
pmem |= FIELD_PREP(FMC2_PMEM_MEMHIZ, timings->thiz);
writel(pmem, nfc->io_base + FMC2_PMEM);
/* Set tset/twait/thold/thiz timings in attribut bank */
patt = FIELD_PREP(FMC2_PATT_ATTSET, timings->tset_att);
patt |= FIELD_PREP(FMC2_PATT_ATTWAIT, timings->twait);
patt |= FIELD_PREP(FMC2_PATT_ATTHOLD, timings->thold_att);
patt |= FIELD_PREP(FMC2_PATT_ATTHIZ, timings->thiz);
writel(pcr, nfc->io_base + FMC2_PCR);
writel(pmem, nfc->io_base + FMC2_PMEM);
writel(patt, nfc->io_base + FMC2_PATT);
}
static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
{
struct stm32_fmc2_nfc *nfc = to_stm32_nfc(chip->controller);
u32 pcr = readl(nfc->io_base + FMC2_PCR);
u32 pcr = 0, pcr_mask;
/* Configure ECC algorithm (default configuration is Hamming) */
pcr &= ~FMC2_PCR_ECCALG;
pcr &= ~FMC2_PCR_BCHECC;
pcr_mask = FMC2_PCR_ECCALG;
pcr_mask |= FMC2_PCR_BCHECC;
if (chip->ecc.strength == FMC2_ECC_BCH8) {
pcr |= FMC2_PCR_ECCALG;
pcr |= FMC2_PCR_BCHECC;
@ -220,15 +217,15 @@ static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
}
/* Set buswidth */
pcr &= ~FMC2_PCR_PWID;
pcr_mask |= FMC2_PCR_PWID;
if (chip->options & NAND_BUSWIDTH_16)
pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
/* Set ECC sector size */
pcr &= ~FMC2_PCR_ECCSS;
pcr_mask |= FMC2_PCR_ECCSS;
pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_512);
writel(pcr, nfc->io_base + FMC2_PCR);
clrsetbits_le32(nfc->io_base + FMC2_PCR, pcr_mask, pcr);
}
static void stm32_fmc2_nfc_select_chip(struct mtd_info *mtd, int chipnr)
@ -254,22 +251,18 @@ static void stm32_fmc2_nfc_select_chip(struct mtd_info *mtd, int chipnr)
static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc,
bool set)
{
u32 pcr = readl(nfc->io_base + FMC2_PCR);
u32 pcr;
pcr &= ~FMC2_PCR_PWID;
if (set)
pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
writel(pcr, nfc->io_base + FMC2_PCR);
pcr = set ? FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16) :
FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_8);
clrsetbits_le32(nfc->io_base + FMC2_PCR, FMC2_PCR_PWID, pcr);
}
static void stm32_fmc2_nfc_set_ecc(struct stm32_fmc2_nfc *nfc, bool enable)
{
u32 pcr = readl(nfc->io_base + FMC2_PCR);
pcr &= ~FMC2_PCR_ECCEN;
if (enable)
pcr |= FMC2_PCR_ECCEN;
writel(pcr, nfc->io_base + FMC2_PCR);
clrsetbits_le32(nfc->io_base + FMC2_PCR, FMC2_PCR_ECCEN,
enable ? FMC2_PCR_ECCEN : 0);
}
static void stm32_fmc2_nfc_clear_bch_irq(struct stm32_fmc2_nfc *nfc)
@ -306,13 +299,8 @@ static void stm32_fmc2_nfc_hwctl(struct mtd_info *mtd, int mode)
stm32_fmc2_nfc_set_ecc(nfc, false);
if (chip->ecc.strength != FMC2_ECC_HAM) {
u32 pcr = readl(nfc->io_base + FMC2_PCR);
if (mode == NAND_ECC_WRITE)
pcr |= FMC2_PCR_WEN;
else
pcr &= ~FMC2_PCR_WEN;
writel(pcr, nfc->io_base + FMC2_PCR);
clrsetbits_le32(nfc->io_base + FMC2_PCR, FMC2_PCR_WEN,
mode == NAND_ECC_WRITE ? FMC2_PCR_WEN : 0);
stm32_fmc2_nfc_clear_bch_irq(nfc);
}
@ -563,7 +551,6 @@ static int stm32_fmc2_nfc_read_page(struct mtd_info *mtd,
static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
{
u32 pcr = readl(nfc->io_base + FMC2_PCR);
u32 bcr1 = readl(nfc->io_base + FMC2_BCR1);
/* Set CS used to undefined */
nfc->cs_sel = -1;
@ -594,9 +581,8 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr |= FIELD_PREP(FMC2_PCR_TAR, FMC2_PCR_TAR_DEFAULT);
/* Enable FMC2 controller */
bcr1 |= FMC2_BCR1_FMC2EN;
setbits_le32(nfc->io_base + FMC2_BCR1, FMC2_BCR1_FMC2EN);
writel(bcr1, nfc->io_base + FMC2_BCR1);
writel(pcr, nfc->io_base + FMC2_PCR);
writel(FMC2_PMEM_DEFAULT, nfc->io_base + FMC2_PMEM);
writel(FMC2_PATT_DEFAULT, nfc->io_base + FMC2_PATT);