Hi,
On 26-Nov-25 3:14 PM, Baojun Xu wrote:
The tas2781-hda supports multi-projects. In some projects, GpioInt() was dropped due to no IRQ connection. See the example code below:
Device (SPKR) { Name (_ADR, One) Name (_HID, "TXNW2781") Method (_CRS, 0, NotSerialized) { Name (RBUF, ResourceTemplate () { I2cSerialBusV2 (0x0038, ...) I2cSerialBusV2 (0x0039, ...) // GpioInt (Edge, ...) { 0x0000 } //"GpioInt (...) {}" was commented out due to no IRQ connection. }) Return (RBUF) } }
But in smi_i2c_probe(), smi_spi_probe() (serial-multi-instantiate.c), if looking for IRQ by smi_get_irq() fails, it will return an error, will not add new device, and cause smi_probe() to fail:
[ 2.356546] Serial bus multi instantiate pseudo device driver TXNW2781:00: error -ENXIO: IRQ index 0 not found [ 2.356561] Serial bus multi instantiate pseudo device driver TXNW2781:00: error -ENXIO: Error requesting irq at index 0
So, we need to add an exception case for these situations. BTW, this patch will take effect on both I2C and SPI devices.
Signed-off-by: Baojun Xu baojun.xu@ti.com
Thanks, patch looks good to me:
Reviewed-by: Hans de Goede johannes.goede@oss.qualcomm.com
Regards,
Hans
v5:
- Change the description for this patch, remove cover letter.
v4:
- Change the description for this patch.
v3:
- Add IRQ_RESOURCE_OPT for IRQ missing cases.
v2:
- Remove error ignore, change to AUTO compatible with NONE.
drivers/platform/x86/serial-multi-instantiate.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/platform/x86/serial-multi-instantiate.c b/drivers/platform/x86/serial-multi-instantiate.c index db030b0f176a..1a369334f9cb 100644 --- a/drivers/platform/x86/serial-multi-instantiate.c +++ b/drivers/platform/x86/serial-multi-instantiate.c @@ -22,6 +22,7 @@ #define IRQ_RESOURCE_GPIO 1 #define IRQ_RESOURCE_APIC 2 #define IRQ_RESOURCE_AUTO 3 +#define IRQ_RESOURCE_OPT BIT(2)
enum smi_bus_type { SMI_I2C, @@ -64,6 +65,10 @@ static int smi_get_irq(struct platform_device *pdev, struct acpi_device *adev, dev_dbg(&pdev->dev, "Using platform irq\n"); break; }
if (inst->flags & IRQ_RESOURCE_OPT) {dev_dbg(&pdev->dev, "No irq\n");return 0;}@@ -386,10 +391,10 @@ static const struct smi_node cs35l57_hda = {
static const struct smi_node tas2781_hda = { .instances = {
{ "tas2781-hda", IRQ_RESOURCE_AUTO, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO, 0 },
{ "tas2781-hda", IRQ_RESOURCE_AUTO | IRQ_RESOURCE_OPT, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO | IRQ_RESOURCE_OPT, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO | IRQ_RESOURCE_OPT, 0 },{ "tas2781-hda", IRQ_RESOURCE_AUTO | IRQ_RESOURCE_OPT, 0 },