Hi,
This is a second revision of the ACPI 5 patches originally introduced here:
https://lkml.org/lkml/2012/11/3/17
The series enables ACPI 5 enumeration of SPI and I2C devices and adds GPIO
translation support for the GPIO resources.
One can then enable ACPI support in a SPI or I2C driver adding something
like:
#ifdef CONFIG_ACPI
static struct acpi_device_id mydrv_acpi_match[] = {
{ "SPI0001", 0 },
...
{ }
};
MODULE_DEVICE_TABLE(acpi, mydrv_acpi_match);
#endif
static struct spi_driver mydrv = {
...
.driver = {
.acpi_match_table = ACPI_PTR(mydrv_acpi_match),
},
};
to the existing driver. If more complex configuration is needed, like
getting GPIOs, calling some method, etc. there is dev->acpi_handle for
that.
Changes to the original version:
[gpio]
- CONFIG_GPIO_ACPI instead of CONFIG_ACPI_GPIO
- removed redundant test in acpi_gpiochip_find()
[spi and i2c]
- switched to use ACPI centralized _CRS evaluation framework
introduced by Rafael
- dropped request_module() call
- dropped the acpi_enumerate_spi/i2c_device()
- added required includes and dropped <linux/acpi.h> from
acpi_i2c.h
The series applies on top of Rafael's
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
There is a dependency to linux-pm.git/linux-next so I think it would be
better if these will be merged via that tree.
Mathias Nyman (1):
gpio / ACPI: add ACPI support
Mika Westerberg (2):
spi / ACPI: add ACPI enumeration support
i2c / ACPI: add ACPI enumeration support
drivers/acpi/Kconfig | 6 ++
drivers/acpi/Makefile | 1 +
drivers/acpi/acpi_i2c.c | 212 +++++++++++++++++++++++++++++++++++++++++++
drivers/gpio/Kconfig | 4 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpiolib-acpi.c | 56 ++++++++++++
drivers/i2c/i2c-core.c | 10 ++
drivers/spi/spi.c | 201 +++++++++++++++++++++++++++++++++++++++-
include/linux/acpi_gpio.h | 19 ++++
include/linux/acpi_i2c.h | 27 ++++++
10 files changed, 536 insertions(+), 1 deletion(-)
create mode 100644 drivers/acpi/acpi_i2c.c
create mode 100644 drivers/gpio/gpiolib-acpi.c
create mode 100644 include/linux/acpi_gpio.h
create mode 100644 include/linux/acpi_i2c.h
--
1.7.10.4
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