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: 2d71ee0ce72f ("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>

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 60bbc5090abec0a626d88dda38c3729b41cc2446..e7a4504f0fbfe9ec5898549bc20192dbb42af7c2 100644 (file)
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -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,