From 72ebe5a0b3505019d4e7592c0dd9281e0b9e44c7 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 14 May 2017 23:35:39 +0200 Subject: [PATCH] ACPI / PMIC: xpower: Add support for the GPI1 regulator to the OpRegion handler Some Bay Trail devices use a GPI1 regulator field (address 0x4c) in their 0x8d power OpRegion, add support for this. This fixes AE_BAD_PARAMETER errors getting thrown on these devices and fixes these errors causing these devices to not suspend. Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pmic/intel_pmic_xpower.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c index 1a76c784cd4c..3b7d5be5b7ed 100644 --- a/drivers/acpi/pmic/intel_pmic_xpower.c +++ b/drivers/acpi/pmic/intel_pmic_xpower.c @@ -21,6 +21,11 @@ #include "intel_pmic.h" #define XPOWER_GPADC_LOW 0x5b +#define XPOWER_GPI1_CTRL 0x92 + +#define GPI1_LDO_MASK GENMASK(2, 0) +#define GPI1_LDO_ON (3 << 0) +#define GPI1_LDO_OFF (4 << 0) static struct pmic_table power_table[] = { { @@ -118,6 +123,10 @@ static struct pmic_table power_table[] = { .reg = 0x10, .bit = 0x00 }, /* BUC6 */ + { + .address = 0x4c, + .reg = 0x92, + }, /* GPI1 */ }; /* TMP0 - TMP5 are the same, all from GPADC */ @@ -156,7 +165,12 @@ static int intel_xpower_pmic_get_power(struct regmap *regmap, int reg, if (regmap_read(regmap, reg, &data)) return -EIO; - *value = (data & BIT(bit)) ? 1 : 0; + /* GPIO1 LDO regulator needs special handling */ + if (reg == XPOWER_GPI1_CTRL) + *value = ((data & GPI1_LDO_MASK) == GPI1_LDO_ON); + else + *value = (data & BIT(bit)) ? 1 : 0; + return 0; } @@ -165,6 +179,11 @@ static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg, { int data; + /* GPIO1 LDO regulator needs special handling */ + if (reg == XPOWER_GPI1_CTRL) + return regmap_update_bits(regmap, reg, GPI1_LDO_MASK, + on ? GPI1_LDO_ON : GPI1_LDO_OFF); + if (regmap_read(regmap, reg, &data)) return -EIO; -- 2.20.1