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mfd: rk808: adjust sleep pin operation sequence for rk817/rk809

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operation sequence of the sleep pin working mode:
1. isable sleep pin function.
2. set sleep pin polarity.
3. enable the mode.

Change-Id: I54b12ac07a64433dbe5c6167658e815c3275d105
Signed-off-by: Shengfei Xu <xsf@rock-chips.com>
This commit is contained in:
Shengfei Xu
2019-09-27 14:55:00 +08:00
committed by Tao Huang
parent 9679919e6f
commit ebee13ef24
1 changed files with 36 additions and 1 deletions
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37
drivers/mfd/rk808.c
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@@ -1407,10 +1407,28 @@ static int rk8xx_suspend(struct device *dev)
}
if (rk808->pins && rk808->pins->p && rk808->pins->sleep) {
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_NULL_FUN);
if (ret) {
dev_err(dev, "suspend: config SLPPIN_NULL_FUN error!\n");
return ret;
}
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPOL_MSK,
RK817_SLPPOL_H);
if (ret) {
dev_err(dev, "suspend: config RK817_SLPPOL_H error!\n");
return ret;
}
ret = pinctrl_select_state(rk808->pins->p, rk808->pins->sleep);
if (ret) {
dev_err(dev, "failed to act slp pinctrl state\n");
return -1;
return ret;
}
}
return ret;
@@ -1433,6 +1451,23 @@ static int rk8xx_resume(struct device *dev)
}
}
if (rk808->pins && rk808->pins->p && rk808->pins->reset) {
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPIN_FUNC_MSK,
SLPPIN_NULL_FUN);
if (ret) {
dev_err(dev, "resume: config SLPPIN_NULL_FUN error!\n");
return ret;
}
ret = regmap_update_bits(rk808->regmap,
RK817_SYS_CFG(3),
RK817_SLPPOL_MSK,
RK817_SLPPOL_L);
if (ret) {
dev_err(dev, "resume: config RK817_SLPPOL_L error!\n");
return ret;
}
ret = pinctrl_select_state(rk808->pins->p, rk808->pins->reset);
if (ret)
dev_dbg(dev, "failed to act reset pinctrl state\n");