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96boards: add support to 96boards (https://www.96boards.org/)

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This patch adds support to 96boards. 96boards is an open platform
specification. This spec strandardizes the pins on the external
connectors like Low speed and High speed. Given these pins are standard
across multiple boards, I think adding a generic 96boards made sense to
me.

The idea behind adding this generic board file is to make mraa work on
most of the 96boards with minimal changes to board support in libmraa.

This patch adds support to the LS expansion connector which has got 12
gpio pins + 2 i2c + 1 spi and 2 uarts.

For now I have added Dragaon board DB401c support as part of this patch
and is tested.
More info about board @ https://www.96boards.org/products/ce/dragonboard410c/

Long term plan is to get all this configuration from the /sys and
populate the board specifics dynamically, which is bit easy with
96boards specs in-place.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Srinivas Kandagatla
2015-12-11 16:28:35 +00:00
committed by Brendan Le Foll
parent 47ec54c333
commit c0dfb71237
5 changed files with 182 additions and 0 deletions
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13
src/arm/arm.c
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@@ -30,6 +30,8 @@
#include "arm/raspberry_pi.h"
#include "arm/beaglebone.h"
#include "arm/banana.h"
#include "arm/96boards.h"
mraa_platform_t
mraa_arm_platform()
@@ -38,6 +40,7 @@ mraa_arm_platform()
size_t len = 100;
char* line = malloc(len);
FILE* fh = fopen("/proc/cpuinfo", "r");
if (fh != NULL) {
while (getline(&line, &len, fh) != -1) {
if (strncmp(line, "Hardware", 8) == 0) {
@@ -63,11 +66,18 @@ mraa_arm_platform()
}
}
}
}
fclose(fh);
}
free(line);
/* Get compatible string from Device tree for boards that dont have enough info in /proc/cpuinfo */
if (platform_type == MRAA_UNKNOWN_PLATFORM) {
if (mraa_file_contains("/sys/firmware/devicetree/base/compatible", "qcom,apq8016-sbc"))
platform_type = MRAA_96BOARDS;
}
switch (platform_type) {
case MRAA_RASPBERRY_PI:
plat = mraa_raspberry_pi();
@@ -78,6 +88,9 @@ mraa_arm_platform()
case MRAA_BANANA:
plat = mraa_banana();
break;
case MRAA_96BOARDS:
plat = mraa_96boards();
break;
default:
plat = NULL;
syslog(LOG_ERR, "Unknown Platform, currently not supported by MRAA");