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i2c: designware: Convert platform driver to use shutdown hook

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Convert the platform driver to use the new i2c_dw_shutdown() hook,
allowing the controller to gracefully NACK controllers requests during
system shutdown.

Signed-off-by: William A. Kennington III <william@wkennington.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260527-dw-i2c-v5-3-3483057f8d67@wkennington.com
This commit is contained in:
William A. Kennington III 2026-05-27 20:09:51 +00:00 committed by Andi Shyti
parent 42b4f04a2f
commit 0a1b80e9db
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1 changed files with 14 additions and 0 deletions
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14
drivers/i2c/busses/i2c-designware-platdrv.c
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@ -289,9 +289,23 @@ static const struct platform_device_id dw_i2c_platform_ids[] = {
};
MODULE_DEVICE_TABLE(platform, dw_i2c_platform_ids);
static void dw_i2c_plat_shutdown(struct platform_device *pdev)
{
struct dw_i2c_dev *i_dev;
i_dev = platform_get_drvdata(pdev);
if (!i_dev)
return;
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
i2c_dw_shutdown(i_dev);
}
static struct platform_driver dw_i2c_driver = {
.probe = dw_i2c_plat_probe,
.remove = dw_i2c_plat_remove,
.shutdown = dw_i2c_plat_shutdown,
.driver = {
.name = "i2c_designware",
.of_match_table = dw_i2c_of_match,