bq27x00: Fix CURRENT_NOW property
According to the bq27000 datasheet the current should be calculated by the following formula: current = AI * 3570 / 20 This patch adjust the drivers code accordingly. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Rodolfo Giometti <giometti@linux.it> Tested-by: Grazvydas Ignotas <notasas@gmail.com>
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@ -44,6 +44,8 @@
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#define BQ27500_FLAG_DSC BIT(0)
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#define BQ27500_FLAG_FC BIT(9)
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#define BQ27000_RS 20 /* Resistor sense */
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/* If the system has several batteries we need a different name for each
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* of them...
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*/
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@ -149,7 +151,7 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di)
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if (di->chip == BQ27500) {
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/* bq27500 returns signed value */
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curr = (int)(s16)curr;
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curr = (int)((s16)curr) * 1000;
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} else {
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ret = bq27x00_read(BQ27x00_REG_FLAGS, &flags, 0, di);
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if (ret < 0) {
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@ -160,9 +162,10 @@ static int bq27x00_battery_current(struct bq27x00_device_info *di)
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dev_dbg(di->dev, "negative current!\n");
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curr = -curr;
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}
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curr = curr * 3570 / BQ27000_RS;
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}
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return curr * 1000;
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return curr;
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}
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/*
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