From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Tue, 19 May 2020 12:50:42 +0000 (+0300)
Subject: i2c: designware: Read counters from ACPI for PCI driver
X-Git-Tag: v5.15~3567^2~36
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=64d0a0755c7deeb600d8ee287cfb84469aa37ac8;p=platform%2Fkernel%2Flinux-starfive.git

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 <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
---

diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index c8808e5..3664d76 100644
--- 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) {