Hi
In eMMC spec, if set BKOPS_SUPPORT bit in ext_csd,
BKOPS_EN, BKOPS_STATUS, BKOPS_START and URGENT_BKOPS are supported for default.
So need not to send switch-command for BKOPS_EN when set BKOPS_SUPPORT bit.
Thanks,
Jaehoon Chung
>> There is no code for enabling BKOPS_EN?
>> If host want to handle background operation manually, it needs.
>
> Sorry, this code is my mistake...maybe duplicated the HPI patch..
> You means maybe need this code..
> /*
> + * Enable BKOPS feature (if supported)
> + */
> + if (card->ext_csd.bkops != NULL) {
> + /*
> + * If card supported BKOPS, default set BKOPS_EN bit.
> + * But ensure to enable bkops, need to check enable bit
> + */
> + if (!card->ext_csd.bkops_en) {
> + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
> + EXT_CSD_BKOPS_EN, 1, 0);
> + if (err && err != -EBADMSG)
> + goto free_card;
> +
> + if (err) {
> + printk(KERN_ERR "%s: Enabling BKOPS failed\n",
> + mmc_hostname(card->host));
> + err = 0;
> + } else
> + card->ext_csd.bkops_en = 1;
> + }
> + }
> +
>
> I will resend the RFC patch..
>
> Thank you for comment.
>
> Best Regards,
> Jaehoon Chung
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