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i2c: designware: Add quirk for Intel Xe

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The regmap is coming from the parent also in case of Xe
GPUs. Reusing the Wangxun quirk for that.

Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Co-developed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20250701122252.2590230-3-heikki.krogerus@linux.intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Rodrigo fixed the co-developed tags while merging]
This commit is contained in:
Heikki Krogerus
2025-07-01 15:22:49 +03:00
committed by Rodrigo Vivi
parent 22290cc904
commit f6a8e9f3de
1 changed files with 5 additions and 2 deletions
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7
drivers/i2c/busses/i2c-designware-platdrv.c
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@@ -101,7 +101,7 @@ static int bt1_i2c_request_regs(struct dw_i2c_dev *dev)
}
#endif
static int txgbe_i2c_request_regs(struct dw_i2c_dev *dev)
static int dw_i2c_get_parent_regmap(struct dw_i2c_dev *dev)
{
dev->map = dev_get_regmap(dev->dev->parent, NULL);
if (!dev->map)
@@ -123,12 +123,15 @@ static int dw_i2c_plat_request_regs(struct dw_i2c_dev *dev)
struct platform_device *pdev = to_platform_device(dev->dev);
int ret;
if (device_is_compatible(dev->dev, "intel,xe-i2c"))
return dw_i2c_get_parent_regmap(dev);
switch (dev->flags & MODEL_MASK) {
case MODEL_BAIKAL_BT1:
ret = bt1_i2c_request_regs(dev);
break;
case MODEL_WANGXUN_SP:
ret = txgbe_i2c_request_regs(dev);
ret = dw_i2c_get_parent_regmap(dev);
break;
default:
dev->base = devm_platform_ioremap_resource(pdev, 0);