Commit Graph

13 Commits

Author SHA1 Message Date
Ian Lepore
57ec63b396 Retrieve the bus clock speed and mode (polarity/phase) from the child device
and set up the hardware accordingly on each transfer.  This replaces the old
configuration done via sysctl, and allows both fdt configuration data and
userland control via the spigen device to work.

Submitted by:	Bob Frazier
Differential Revision:	https://reviews.freebsd.org/D15031
2018-06-23 23:44:36 +00:00
Oleksandr Tymoshenko
91cc58af37 [rpi] Add fdt_pinctrl(4) support to Raspberry Pi GPIO driver
On Raspberry Pi platform GPIO controller also responsible for pins
multiplexing. Pi code predates proper FDT support in FreeBSD so a
lot of pinmux info is hardcoded. This patch:

- Implements pinctl methods in bcm2835_gpio
- Converts all devices with ad-hoc pinmux info to proper pin control
  mechanisms and adds pinmux info in FreeBSD's custom dts files.
- Adds fdt_pinctrl option to RPI2 and RPI-B kernels
- Adds SPI pinmux config to FreeBSD's customization of GNU DTS.

Reviewed by:	imp, manu
Differential Revision:	https://reviews.freebsd.org/D14104
2018-04-08 00:56:19 +00:00
Pedro F. Giffuni
af3dc4a7ca sys/arm: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:04:10 +00:00
Emmanuel Vadot
7073d12c4d ofw_spi: Parse property for the SPI mode and CS polarity.
As cs is stored in a uint32_t, use the last bit to store the
active high flag as it's unlikely that we will have that much CS.

Reviewed by:	loos
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D8614
2016-12-18 14:54:20 +00:00
Emmanuel Vadot
718860e469 CS ivar is uint32_t, not int.
MFC after:	3 days
2016-12-12 18:36:46 +00:00
Andrew Turner
df7675353e Stop including fdt_common.h from the arm code when it's unneeded.
Sponsored by:	ABT Systems Ltd
2016-11-14 11:41:22 +00:00
Oleksandr Tymoshenko
9d6eb8bb3d Add compatible strings used in upstream dts files 2016-10-12 03:00:42 +00:00
Michal Meloun
c7264b2dfa ARM: Remove unused includes.
MFC after: 1 week
2016-10-09 10:25:47 +00:00
Ian Lepore
148ddb8a6f Add a missing wakeup when releasing ownership of the SPI hardware.
Also, validate the chipselect parameter before grabbing ownership of the
hardware, and report timeout errors after releasing it.

PR:		200584
2015-06-02 16:07:28 +00:00
Andrew Turner
ff3b52bb19 Stop using machine/fdt.h in the arm kernel code when we don't need it. 2015-04-04 21:34:26 +00:00
Ian Lepore
add35ed5b8 Follow r261352 by updating all drivers which are children of simplebus
to check the status property in their probe routines.

Simplebus used to only instantiate its children whose status="okay"
but that was improper behavior, fixed in r261352.  Now that it doesn't
check anymore and probes all its children; the children all have to
do the check because really only the children know how to properly
interpret their status property strings.

Right now all existing drivers only understand "okay" versus something-
that's-not-okay, so they all use the new ofw_bus_status_okay() helper.
2014-02-02 19:17:28 +00:00
Ian Lepore
6489412064 Remove #include <machine/frame.h> from all the arm code that doesn't
really need it.  That would be almost everywhere it was included.  Add
it in a couple files that really do need it and were previously getting
it by accident via another header.
2013-10-27 01:34:10 +00:00
Luiz Otavio O Souza
07897970fb Add the Raspberry Pi SPI controller driver.
Reviewed by:	rpaulo
Approved by:	adrian (mentor)
2013-10-24 16:27:33 +00:00