On 15.02.2024 14:48, Md Sadre Alam wrote:
> Add qpic spi nand driver support. The spi nand
> driver currently supported the below commands.
>
> -- RESET
> -- READ ID
> -- SET FEATURE
> -- GET FEATURE
> -- READ PAGE
> -- WRITE PAGE
> -- ERASE PAGE
>
> Co-developed-by: Sricharan Ramabadhran <quic_srichara@xxxxxxxxxxx>
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@xxxxxxxxxxx>
> Co-developed-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx>
> Signed-off-by: Varadarajan Narayanan <quic_varada@xxxxxxxxxxx>
> Signed-off-by: Md Sadre Alam <quic_mdalam@xxxxxxxxxxx>
> ---
[...]
> +void snandc_set_reg(struct qcom_nand_controller *snandc, int offset, u32 val)
> +{
> + struct nandc_regs *regs = snandc->regs;
> + __le32 *reg;
> +
> + reg = offset_to_nandc_reg(regs, offset);
> +
> + if (reg)
> + *reg = cpu_to_le32(val);
if (WARN_ON(!reg))
return;
instead?
This would be tragic..
[...]
> +
> + ecc_cfg->cfg0 = (cwperpage - 1) << CW_PER_PAGE
> + | ecc_cfg->cw_data << UD_SIZE_BYTES
> + | 1 << DISABLE_STATUS_AFTER_WRITE
> + | 3 << NUM_ADDR_CYCLES
> + | ecc_cfg->ecc_bytes_hw << ECC_PARITY_SIZE_BYTES_RS
> + | 0 << STATUS_BFR_READ
> + | 1 << SET_RD_MODE_AFTER_STATUS
> + | ecc_cfg->spare_bytes << SPARE_SIZE_BYTES;
Let me introduce you to FIELD_PREP/GET and GENMASK().. Many assignments
in this file could use these.
Konrad
