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usb: misc: nb7vpq904m: fix suspend/resume issue

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when suspend happen with empty OTG cable,
then insert USB 3 thumb drive,
after resume, thumb drive work in USB 2 mode.

currently in suspend function only disable redriver,
but no operation in resume function.

fix it by enable redriver during resume.

Change-Id: I57535dd24317cce77e40eb8ca30a2203af6776b0
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>
This commit is contained in:
Linyu Yuan 2020-12-23 15:45:54 +08:00
commit 97d51db933
1 changed files with 11 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

13
drivers/usb/misc/ssusb-redriver-nb7vpq904m.c
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@ -1022,8 +1022,8 @@ static int __maybe_unused redriver_i2c_suspend(struct device *dev)
redriver->op_mode == OP_MODE_DEFAULT)
return 0;
redriver->op_mode = OP_MODE_NONE;
ssusb_redriver_gen_dev_set(redriver);
redriver_i2c_reg_set(redriver, GEN_DEV_SET_REG,
redriver->gen_dev_val & ~CHIP_EN);
return 0;
}
@ -1036,6 +1036,15 @@ static int __maybe_unused redriver_i2c_resume(struct device *dev)
dev_dbg(redriver->dev, "%s: SS USB redriver resume.\n",
__func__);
/* no suspend happen in following mode */
if (redriver->op_mode == OP_MODE_DP ||
redriver->op_mode == OP_MODE_NONE ||
redriver->op_mode == OP_MODE_DEFAULT)
return 0;
redriver_i2c_reg_set(redriver, GEN_DEV_SET_REG,
redriver->gen_dev_val);
return 0;
}