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ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links

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commit b3b3519c04 upstream.

Various Asus Bay Trail devices (T100TA, T100CHI, T200TA) have an embedded
controller connected to I2C1 and the iGPU (LNXVIDEO) _PS0/_PS3 methods
access it, so we need to add a consumer link from LNXVIDEO to I2C1 on
these devices to avoid suspend/resume ordering problems.

Fixes: 2d71ee0ce7 ("ACPI / LPSS: Add a device link from the GPU to the BYT I2C5 controller")
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: 4.20+ <stable@vger.kernel.org> # 4.20+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede
2019-10-24 23:57:22 +02:00
committed by Greg Kroah-Hartman
parent 8655d19193
commit 4cbdbad9ae
1 changed files with 2 additions and 0 deletions
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2
drivers/acpi/acpi_lpss.c
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@@ -477,6 +477,8 @@ static const struct lpss_device_links lpss_device_links[] = {
{"808622C1", "7", "80860F14", "3", DL_FLAG_PM_RUNTIME},
/* CHT iGPU depends on PMIC I2C controller */
{"808622C1", "7", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
/* BYT iGPU depends on the Embedded Controller I2C controller (UID 1) */
{"80860F41", "1", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
/* BYT CR iGPU depends on PMIC I2C controller (UID 5 on CR) */
{"80860F41", "5", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
/* BYT iGPU depends on PMIC I2C controller (UID 7 on non CR) */