Commit cc18735f authored Oct 24, 2019 by Hans de Goede Committed by Rafael J. Wysocki Oct 25, 2019

ACPI: LPSS: Add LNXVIDEO -> BYT I2C7 to lpss_device_links



So far on Bay Trail (BYT) we only have been adding a device_link adding
the iGPU (LNXVIDEO) device as consumer for the I2C controller for the
PMIC for I2C5, but the PMIC only uses I2C5 on BYT CR (cost reduced) on
regular BYT platforms I2C7 is used and we were not adding the device_link
sometimes causing resume ordering issues.

This commit adds LNXVIDEO -> BYT I2C7 to the lpss_device_links table,
fixing this.

Fixes: 2d71ee0c ("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>

parent 7d194c21

drivers/acpi/acpi_lpss.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -473,9 +473,14 @@ struct lpss_device_links {
		* the supplier is not enumerated until after the consumer is probed.
		*/
		static const struct lpss_device_links lpss_device_links[] = {
		/* CHT External sdcard slot controller depends on PMIC I2C ctrl */
		{"808622C1", "7", "80860F14", "3", DL_FLAG_PM_RUNTIME},
		/* CHT iGPU depends on PMIC I2C controller */
		{"808622C1", "7", "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) */
		{"80860F41", "7", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
		};

		static bool hid_uid_match(struct acpi_device *adev,

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