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Subject[PATCH v2 06/10] mtd: rawnand: denali: use bool type instead of int where appropriate
Date
Use 'bool' type for the following boolean parameters.

- write (write or read?)
- raw (raw access or not?)
- dma_avail (DMA engine available or not?)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

Changes in v2:
- Use bool for dma_avail as well

drivers/mtd/nand/raw/denali.c | 27 ++++++++++++++-------------
drivers/mtd/nand/raw/denali.h | 4 ++--
2 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index 7050b1f..f539731 100644
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -360,7 +360,7 @@ static int denali_sw_ecc_fixup(struct nand_chip *chip,
}

static void denali_setup_dma64(struct denali_nand_info *denali,
- dma_addr_t dma_addr, int page, int write)
+ dma_addr_t dma_addr, int page, bool write)
{
uint32_t mode;
const int page_count = 1;
@@ -374,7 +374,8 @@ static void denali_setup_dma64(struct denali_nand_info *denali,
* burst len = 64 bytes, the number of pages
*/
denali->host_write(denali, mode,
- 0x01002000 | (64 << 16) | (write << 8) | page_count);
+ 0x01002000 | (64 << 16) |
+ (write ? BIT(8) : 0) | page_count);

/* 2. set memory low address */
denali->host_write(denali, mode, lower_32_bits(dma_addr));
@@ -384,7 +385,7 @@ static void denali_setup_dma64(struct denali_nand_info *denali,
}

static void denali_setup_dma32(struct denali_nand_info *denali,
- dma_addr_t dma_addr, int page, int write)
+ dma_addr_t dma_addr, int page, bool write)
{
uint32_t mode;
const int page_count = 1;
@@ -395,7 +396,7 @@ static void denali_setup_dma32(struct denali_nand_info *denali,

/* 1. setup transfer type and # of pages */
denali->host_write(denali, mode | page,
- 0x2000 | (write << 8) | page_count);
+ 0x2000 | (write ? BIT(8) : 0) | page_count);

/* 2. set memory high address bits 23:8 */
denali->host_write(denali, mode | ((dma_addr >> 16) << 8), 0x2200);
@@ -457,7 +458,7 @@ static int denali_pio_write(struct denali_nand_info *denali, const u32 *buf,
}

static int denali_pio_xfer(struct denali_nand_info *denali, void *buf,
- size_t size, int page, int write)
+ size_t size, int page, bool write)
{
if (write)
return denali_pio_write(denali, buf, size, page);
@@ -466,7 +467,7 @@ static int denali_pio_xfer(struct denali_nand_info *denali, void *buf,
}

static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
- size_t size, int page, int write)
+ size_t size, int page, bool write)
{
dma_addr_t dma_addr;
uint32_t irq_mask, irq_status, ecc_err_mask;
@@ -523,7 +524,7 @@ static int denali_dma_xfer(struct denali_nand_info *denali, void *buf,
}

static int denali_data_xfer(struct nand_chip *chip, void *buf, size_t size,
- int page, int raw, int write)
+ int page, bool raw, bool write)
{
struct denali_nand_info *denali = to_denali(chip);

@@ -648,7 +649,7 @@ static int denali_read_page_raw(struct nand_chip *chip, uint8_t *buf,
if (!buf)
return -EINVAL;

- ret = denali_data_xfer(chip, tmp_buf, size, page, 1, 0);
+ ret = denali_data_xfer(chip, tmp_buf, size, page, true, false);
if (ret)
return ret;

@@ -704,7 +705,7 @@ static int denali_write_page_raw(struct nand_chip *chip, const uint8_t *buf,
return ret;
}

- return denali_data_xfer(chip, tmp_buf, size, page, 1, 1);
+ return denali_data_xfer(chip, tmp_buf, size, page, true, true);
}

static int denali_change_read_column_op(void *buf, unsigned int offset,
@@ -756,7 +757,7 @@ static int denali_read_page(struct nand_chip *chip, uint8_t *buf,
int stat = 0;
int ret;

- ret = denali_data_xfer(chip, buf, mtd->writesize, page, 0, 0);
+ ret = denali_data_xfer(chip, buf, mtd->writesize, page, false, false);
if (ret && ret != -EBADMSG)
return ret;

@@ -786,7 +787,7 @@ static int denali_write_page(struct nand_chip *chip, const uint8_t *buf,
struct mtd_info *mtd = nand_to_mtd(chip);

return denali_data_xfer(chip, (void *)buf, mtd->writesize, page,
- 0, 1);
+ false, true);
}

static int denali_setup_data_interface(struct nand_chip *chip, int chipnr,
@@ -1042,7 +1043,7 @@ static int denali_attach_chip(struct nand_chip *chip)
int ret;

if (ioread32(denali->reg + FEATURES) & FEATURES__DMA)
- denali->dma_avail = 1;
+ denali->dma_avail = true;

if (denali->dma_avail) {
int dma_bit = denali->caps & DENALI_CAP_DMA_64BIT ? 64 : 32;
@@ -1051,7 +1052,7 @@ static int denali_attach_chip(struct nand_chip *chip)
if (ret) {
dev_info(denali->dev,
"Failed to set DMA mask. Disabling DMA.\n");
- denali->dma_avail = 0;
+ denali->dma_avail = false;
}
}

diff --git a/drivers/mtd/nand/raw/denali.h b/drivers/mtd/nand/raw/denali.h
index c8c2620..8552b3f 100644
--- a/drivers/mtd/nand/raw/denali.h
+++ b/drivers/mtd/nand/raw/denali.h
@@ -304,7 +304,7 @@ struct denali_nand_info {
u32 irq_status; /* interrupts that have happened */
int irq;
void *buf; /* for syndrome layout conversion */
- int dma_avail; /* can support DMA? */
+ bool dma_avail; /* can support DMA? */
int devs_per_cs; /* devices connected in parallel */
int oob_skip_bytes; /* number of bytes reserved for BBM */
int max_banks;
@@ -314,7 +314,7 @@ struct denali_nand_info {
u32 (*host_read)(struct denali_nand_info *denali, u32 addr);
void (*host_write)(struct denali_nand_info *denali, u32 addr, u32 data);
void (*setup_dma)(struct denali_nand_info *denali, dma_addr_t dma_addr,
- int page, int write);
+ int page, bool write);
};

#define DENALI_CAP_HW_ECC_FIXUP BIT(0)
--
2.7.4
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