[PATCH v4 09/11] i2c: designware: Retrieve quirk flags as early as possible

Serge Semin
2020-05-27T12:07:41Z

Some platforms might need to activate the driver quirks at a very early
probe stage. For instance, Baikal-T1 System I2C doesn't need to map the
registers space as ones belong to the system controller. Instead it will
request the syscon regmap from the parental DT node. In order to be able
to do so let's retrieve the model flags right after the DW I2C private
data is created.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: devicetree@vger.kernel.org

---

Changelog v3:
- This is a new patch, which has been created due to declining the
glue-layer approach.
---
drivers/i2c/busses/i2c-designware-platdrv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index ca057aa9eac4..ad292de2d260 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -124,6 +124,8 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
if (!dev)
return -ENOMEM;

+ dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
+
dev->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(dev->base))
return PTR_ERR(dev->base);
@@ -146,8 +148,6 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)

i2c_dw_acpi_adjust_bus_speed(&pdev->dev);

- dev->flags |= (uintptr_t)device_get_match_data(&pdev->dev);
-
if (pdev->dev.of_node)
dw_i2c_of_configure(pdev);

--
2.26.2