On 2014年05月21日 05:25, Rafael J. Wysocki wrote: > On Tuesday, May 20, 2014 08:59:19 PM Lan Tianyu wrote: >> ACPI 5.0 spec(5.5.2.4.5) defines GenericSerialBus(i2c, spi, uart) operation >> region. It allows ACPI aml code able to access such kind of devices to >> implement some ACPI standard method. >> >> On the Asus T100TA, Bios use GenericSerialBus operation region to access >> i2c device to get battery info. So battery function depends on the I2C >> operation region support. Here is the bug link. >> https://bugzilla.kernel.org/show_bug.cgi?id=69011 >> >> Change since V2: >> Drop patchs of adding I2C smbus quick read/write and word/block >> process call functions because not find machines supporting such protocols >> so far and can't test these functions. >> Merge patchs of "I2C ACPI related code clear up" and "Add CONFIG_I2C_ACPI >> config" >> Patch 2: Add acpi_bus_detach_private_data() function to detach data from >> ACPI handle and replace ACPI_ERROR() with acpi_handle_debug() to avoid some redundant >> error log. >> >> Change since V1: >> Fix some code style issues. Change prefix i2c_acpi to acpi_i2c. >> Move ACPI related code in the i2c core to i2c-acpi.c. Add CONFIG_I2C_ACPI >> and make i2c core built-in when it's set to avoid i2c ACPI operation region >> being removed. >> >> Lan Tianyu (5): >> ACPICA: Export acpi_buffer_to_resource symbol > > Redundant? Yes. > >> ACPI: Add acpi_bus_attach_private_data() to facilitate to attach data >> to ACPI handle >> ACPI/Thermal: Use acpi_bus_attach_private_data() to attach private >> data > > I can take the above two regardless of the I2C material below I guess? Yes. > >> I2C/ACPI: Add i2c ACPI operation region support >> I2C/ACPI: Clean up I2C ACPI code and Add CONFIG_I2C_ACPI config >> >> drivers/acpi/acpica/rscreate.c | 1 + >> drivers/acpi/bus.c | 28 +++- >> drivers/acpi/thermal.c | 11 +- >> drivers/i2c/Kconfig | 18 +- >> drivers/i2c/Makefile | 5 +- >> drivers/i2c/i2c-acpi.c | 362 +++++++++++++++++++++++++++++++++++++++++ >> drivers/i2c/i2c-core.c | 97 +---------- >> include/acpi/acpi_bus.h | 2 + >> include/linux/acpi.h | 11 ++ >> include/linux/i2c.h | 12 ++ >> 10 files changed, 439 insertions(+), 108 deletions(-) >> create mode 100644 drivers/i2c/i2c-acpi.c >> >> > -- Best regards Tianyu Lan -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
