mfd: stmfx: Reset chip on resume as supply was disabled
STMFX supply is disabled during suspend. To avoid a too early access to
the STMFX firmware on resume, reset the chip and wait for its firmware to
be loaded.
Fixes: 06252ade91
("mfd: Add ST Multi-Function eXpander (STMFX) core driver")
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
alistair/sunxi64-5.8
parent
7ff864e1ad
commit
e583649d87
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@ -501,6 +501,13 @@ static int stmfx_resume(struct device *dev)
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}
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}
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}
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}
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/* Reset STMFX - supply has been stopped during suspend */
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ret = stmfx_chip_reset(stmfx);
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if (ret) {
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dev_err(stmfx->dev, "Failed to reset chip: %d\n", ret);
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return ret;
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}
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ret = regmap_raw_write(stmfx->map, STMFX_REG_SYS_CTRL,
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ret = regmap_raw_write(stmfx->map, STMFX_REG_SYS_CTRL,
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&stmfx->bkp_sysctrl, sizeof(stmfx->bkp_sysctrl));
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&stmfx->bkp_sysctrl, sizeof(stmfx->bkp_sysctrl));
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if (ret)
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if (ret)
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