On Thursday, December 20, 2018 3:34:51 PM CET Hans de Goede wrote:
> The Point of View TAB-P1006W-232-3G tablet has an ACPI firmware node with
> a HID of BSG2150 describing the 2 Bosch sensors used in the device a
> BMC150 compatible accelerometer and a BMC150 compatible magnetometer.
>
> The ACPI firmware node actually contains 3 I2cSerialBusV2 resources,
> but this seems to be a copy and paste job from the BSG1160 firmware node
> on other devices, since there is no i2c-client listening to the 0x68
> address listed in the third resource and the 0x68 address is identical
> to the address of the third resource in the BSG1160 nodes, where as the
> other 2 addresses are different.
>
> Add the ID to the I2C multi instantiate list, so that the
> i2c-multi-instantiate.c driver can handle it;
>
> And add the necessary info to the i2c-multi-instantiate.c driver to
> enumerate all I2C slaves correctly.
>
> To avoid triggering the:
>
> if (i < multi->num_clients) {
> dev_err(dev, "Error finding driver, idx %d\n", i);
>
> Error this commit lists the 3th device in the i2c_inst_data with a
> type of "bsg2150_dummy_dev".
>
> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> ---
> drivers/acpi/scan.c | 1 +
> drivers/platform/x86/i2c-multi-instantiate.c | 9 +++++++++
> 2 files changed, 10 insertions(+)
>
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index e9eda5558c1f..d5b981cafaf8 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1540,6 +1540,7 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
> */
> static const struct acpi_device_id i2c_multi_instantiate_ids[] = {
> {"BSG1160", },
> + {"BSG2150", },
> {"INT33FE", },
> {"INT3515", },
> {}
> diff --git a/drivers/platform/x86/i2c-multi-instantiate.c b/drivers/platform/x86/i2c-multi-instantiate.c
> index 3d893e0ac250..197d8a192721 100644
> --- a/drivers/platform/x86/i2c-multi-instantiate.c
> +++ b/drivers/platform/x86/i2c-multi-instantiate.c
> @@ -159,6 +159,14 @@ static const struct i2c_inst_data bsg1160_data[] = {
> {}
> };
>
> +static const struct i2c_inst_data bsg2150_data[] = {
> + { "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
> + { "bmc150_magn" },
> + /* The resources describe a 3th client, but it is not really there. */
> + { "bsg2150_dummy_dev" },
> + {}
> +};
> +
> static const struct i2c_inst_data int3515_data[] = {
> { "tps6598x", IRQ_RESOURCE_APIC, 0 },
> { "tps6598x", IRQ_RESOURCE_APIC, 1 },
> @@ -173,6 +181,7 @@ static const struct i2c_inst_data int3515_data[] = {
> */
> static const struct acpi_device_id i2c_multi_inst_acpi_ids[] = {
> { "BSG1160", (unsigned long)bsg1160_data },
> + { "BSG2150", (unsigned long)bsg2150_data },
> { "INT3515", (unsigned long)int3515_data },
> { }
> };
>
