i2c: designware: Read counters from ACPI for PCI driver

PCI devices may have been backed with ACPI handle which supplies an additional information to the drivers, such as counters. Call for ACPI configuration from PCI driver in order to utilize counters provided by ACPI. Signed-off-by: Andy Shevchenko <[email protected]> Acked-by: Jarkko Nikula <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
sudhin-joseph · May 22, 2020 · 64d0a07 · 64d0a07
1 parent f9288fc
commit 64d0a07
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -255,6 +255,17 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 		}
 	}
 
+	i2c_dw_acpi_adjust_bus_speed(&pdev->dev);
+
+	if (has_acpi_companion(&pdev->dev))
+		i2c_dw_acpi_configure(&pdev->dev);
+
+	r = i2c_dw_validate_speed(dev);
+	if (r) {
+		pci_free_irq_vectors(pdev);
+		return r;
+	}
+
 	i2c_dw_configure(dev);
 
 	if (controller->scl_sda_cfg) {