Commit graph

5 commits

Author SHA1 Message Date
Ricardo de Almeida Gonzaga 495dcd659a x86: Add PCAL9535A support
This patch adds gpio-pcal9535a.c and gpio-pcal9535a.h files,
which support access to I2C-based PCAL9535A GPIO controller
configuration register through a function interface.

The PCAL9535A is a low-voltage 16-bit GPIO expander with interrupt
and reset for I2C-bus/SMBus applications. It contains the PCA9535
register set of four pairs of 8-bit Configuration, Input, Output,
and Polarity Inversion registers, and additionally, the PCAL9535A has
Agile I/O, which are additional features specifically designed to
enhance the I/O. More about PCAL9535A can be found in its datasheet[1].

This driver is needed in order to configure Galileo pinmux.

[1] - http://www.nxp.com/documents/data_sheet/PCAL9535A.pdf
2015-12-21 08:06:14 -02:00
Ricardo de Almeida Gonzaga a27af5b395 x86: Add Intel Quark X1000 I2C support
This patch adds the i2c.c, i2c.h and i2c-registers.h files,
which support access to I2C controller configuration register
through a function interface.
2015-12-21 08:06:14 -02:00
Ricardo de Almeida Gonzaga 2d552285cd x86: Add Intel Quark X1000 GPIO Controller (non-legacy) support
This patch adds the gpio.c and gpio.h files, which support
access to GPIO Controller (non-legacy) configuration register
through a function interface.

It doesn't add interrupt support due to pinmux reasons. On
Galileo Gen 2 we need to configure a pin as input/interrupt
using pinmux and this can only be achieved through I2C. There's
one pin exported by default as GPIO output and we used this one
to test this driver.

In the future, we plan to add an I2C driver and a pinmux configuration
driver in order to solve this kind of problems.
2015-12-21 08:06:14 -02:00
Ricardo de Almeida Gonzaga 60f6edef80 x86: Add support for PCI BAR1
This patch adds support for PCI BAR1 and also changes
the pci_init(), instead of having one function for each `bar`
we now set the `bar` to pci_config_addr_t parameter before calling
the pci_init() function..
2015-12-21 08:06:14 -02:00
Michael LeMay 15f947fe40 x86: Add Intel Quark X1000 UART support.
This patch adds a driver that wraps the generic 16X50 UART driver with
specific support for the two Intel Quark X1000 built-in UARTs.
2015-12-21 08:06:14 -02:00