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| author | Hans de Goede <hdegoede@redhat.com> | 2019-01-07 14:15:55 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2019-01-09 12:35:03 +0300 |
| commit | 429188f0bc6aac7080095e07c70c77c6537cf57a (patch) | |
| tree | 79aa89d9143d64b70463cda7ada50745b9a1e6c9 /drivers/acpi/pmic | |
| parent | 4f6016825237740257847eccd2bf446dac72182a (diff) | |
| download | linux-429188f0bc6aac7080095e07c70c77c6537cf57a.tar.xz | |
ACPI / PMIC: Add generic intel_soc_pmic_exec_mipi_pmic_seq_element handling
Most PMIC-s use only a single i2c-address, so after verifying the
i2c-address matches, we can simply pass the call to regmap_update_bits.
This commit adds support for this and hooks this up for the xpower AXP288
PMIC by setting the new pmic_i2c_address field.
This fixes the following errors on display on / off on a Jumper Ezpad
mini 3 and an Onda V80 plus tablet, both of which use the AXP288:
intel_soc_pmic_exec_mipi_pmic_seq_element: Not implemented
intel_soc_pmic_exec_mipi_pmic_seq_element: i2c-addr: 0x34 reg-addr ...
[drm:mipi_exec_pmic [i915]] *ERROR* mipi_exec_pmic failed, error: -95
Instead of these errors on both devices we now correctly turn on / off
DLDO3 (through direct register manipulation). On the Onda V80 plus this
fixes an issue with the backlight being brighter around the borders after
an off / on cycle. This should also help to save some power when the
display is off.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190107111556.4510-4-hdegoede@redhat.com
Diffstat (limited to 'drivers/acpi/pmic')
| -rw-r--r-- | drivers/acpi/pmic/intel_pmic.c | 9 | ||||
| -rw-r--r-- | drivers/acpi/pmic/intel_pmic.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/pmic/intel_pmic_xpower.c | 1 |
3 files changed, 12 insertions, 0 deletions
diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c index 471afeea87c2..c14cfaea92e2 100644 --- a/drivers/acpi/pmic/intel_pmic.c +++ b/drivers/acpi/pmic/intel_pmic.c @@ -359,6 +359,15 @@ int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address, ret = d->exec_mipi_pmic_seq_element(intel_pmic_opregion->regmap, i2c_address, reg_address, value, mask); + } else if (d->pmic_i2c_address) { + if (i2c_address == d->pmic_i2c_address) { + ret = regmap_update_bits(intel_pmic_opregion->regmap, + reg_address, mask, value); + } else { + pr_err("%s: Unexpected i2c-addr: 0x%02x (reg-addr 0x%x value 0x%x mask 0x%x)\n", + __func__, i2c_address, reg_address, value, mask); + ret = -ENXIO; + } } else { pr_warn("%s: Not implemented\n", __func__); pr_warn("%s: i2c-addr: 0x%x reg-addr 0x%x value 0x%x mask 0x%x\n", diff --git a/drivers/acpi/pmic/intel_pmic.h b/drivers/acpi/pmic/intel_pmic.h index 5cd195fabca8..89379476a1df 100644 --- a/drivers/acpi/pmic/intel_pmic.h +++ b/drivers/acpi/pmic/intel_pmic.h @@ -21,6 +21,8 @@ struct intel_pmic_opregion_data { int power_table_count; struct pmic_table *thermal_table; int thermal_table_count; + /* For generic exec_mipi_pmic_seq_element handling */ + int pmic_i2c_address; }; int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle, struct regmap *regmap, struct intel_pmic_opregion_data *d); diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c index 2579675b7082..1b49cbb1e21e 100644 --- a/drivers/acpi/pmic/intel_pmic_xpower.c +++ b/drivers/acpi/pmic/intel_pmic_xpower.c @@ -240,6 +240,7 @@ static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = { .power_table_count = ARRAY_SIZE(power_table), .thermal_table = thermal_table, .thermal_table_count = ARRAY_SIZE(thermal_table), + .pmic_i2c_address = 0x34, }; static acpi_status intel_xpower_pmic_gpio_handler(u32 function, |