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mtd: spinand: winbond: Create a helper to detect the need for the HS bit

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The logic is not complex but might be reused to cleanup a bit the
section by moving it to a dedicated helper.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Miquel Raynal 2026-03-26 17:02:29 +01:00
parent 240e65cb44
commit ca842a62fe
1 changed files with 17 additions and 14 deletions
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31
drivers/mtd/nand/spi/winbond.c
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@ -421,30 +421,33 @@ static int w25n0xjw_set_sr4_hs(struct spinand_device *spinand, bool enable)
return spinand_write_reg_op(spinand, W25N0XJW_SR4, sr4);
}
/*
* SDR dual and quad I/O operations over 104MHz require the HS bit to
* enable a few more dummy cycles.
*/
static bool w25n0xjw_op_needs_hs(const struct spi_mem_op *op)
{
if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
return false;
else if (op->cmd.buswidth != 1 || op->addr.buswidth == 1)
return false;
else if (op->max_freq && op->max_freq <= 104 * HZ_PER_MHZ)
return false;
return true;
}
static int w25n0xjw_hs_cfg(struct spinand_device *spinand,
enum spinand_bus_interface iface)
{
const struct spi_mem_op *op;
bool hs;
if (iface != SSDR)
return -EOPNOTSUPP;
/*
* SDR dual and quad I/O operations over 104MHz require the HS bit to
* enable a few more dummy cycles.
*/
op = spinand->op_templates->read_cache;
if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr)
hs = false;
else if (op->cmd.buswidth != 1 || op->addr.buswidth == 1)
hs = false;
else if (op->max_freq && op->max_freq <= 104 * HZ_PER_MHZ)
hs = false;
else
hs = true;
return w25n0xjw_set_sr4_hs(spinand, hs);
return w25n0xjw_set_sr4_hs(spinand, w25n0xjw_op_needs_hs(op));
}
static int w35n0xjw_write_vcr(struct spinand_device *spinand, u8 reg, u8 val)