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 <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
index 1a76c78..3b7d5be 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;
