From 4f6016825237740257847eccd2bf446dac72182a Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 7 Jan 2019 12:15:54 +0100 Subject: ACPI / PMIC: Implement exec_mipi_pmic_seq_element for CHT Whiskey Cove PMIC Implement the exec_mipi_pmic_seq_element callback for the CHT Whiskey Cove PMIC. On some CHT devices this fixes the LCD panel not lighting up when it was not initialized by the GOP, because an external monitor was plugged in and the GOP initialized only the external monitor. Reviewed-by: Mika Westerberg Signed-off-by: Hans de Goede Link: https://patchwork.freedesktop.org/patch/msgid/20190107111556.4510-3-hdegoede@redhat.com --- drivers/acpi/pmic/intel_pmic_chtwc.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/acpi/pmic') diff --git a/drivers/acpi/pmic/intel_pmic_chtwc.c b/drivers/acpi/pmic/intel_pmic_chtwc.c index 078b0448f30a..7ffd5624b8e1 100644 --- a/drivers/acpi/pmic/intel_pmic_chtwc.c +++ b/drivers/acpi/pmic/intel_pmic_chtwc.c @@ -231,6 +231,24 @@ static int intel_cht_wc_pmic_update_power(struct regmap *regmap, int reg, return regmap_update_bits(regmap, reg, bitmask, on ? 1 : 0); } +static int intel_cht_wc_exec_mipi_pmic_seq_element(struct regmap *regmap, + u16 i2c_client_address, + u32 reg_address, + u32 value, u32 mask) +{ + u32 address; + + if (i2c_client_address > 0xff || reg_address > 0xff) { + pr_warn("%s warning addresses too big client 0x%x reg 0x%x\n", + __func__, i2c_client_address, reg_address); + return -ERANGE; + } + + address = (i2c_client_address << 8) | reg_address; + + return regmap_update_bits(regmap, address, mask, value); +} + /* * The thermal table and ops are empty, we do not support the Thermal opregion * (DPTF) due to lacking documentation. @@ -238,6 +256,7 @@ static int intel_cht_wc_pmic_update_power(struct regmap *regmap, int reg, static struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = { .get_power = intel_cht_wc_pmic_get_power, .update_power = intel_cht_wc_pmic_update_power, + .exec_mipi_pmic_seq_element = intel_cht_wc_exec_mipi_pmic_seq_element, .power_table = power_table, .power_table_count = ARRAY_SIZE(power_table), }; -- cgit v1.2.3