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scripts: extract_dts_includes: generate controller #define's

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When a node is referencing to a parent node and this node is
reported as controller, generate a #define to declare this controller.
Value is controller property 'label'
For instance, if following gpio controller is referenced in board dts:
green_led_1: led@1 {
    gpios = <&gpioa 5 GPIO_INT_ACTIVE_HIGH>;
    label = "User LD1";
};
Following will be generated:
\#define GPIO_LEDS_1_GPIO_CONTROLLER "GPIOA"

Besides, if defined, alias label will be generated as well for this
controller:
aliases {
    led0 = &green_led_1;
};
will trigger generation of:
\#define LED0_GPIO_CONTROLLER GPIO_LEDS_1_GPIO_CONTROLLER

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2017-12-19 13:09:01 +01:00 • committed by Kumar Gala
commit 69beec87b1
1 changed files with 40 additions and 0 deletions
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40
scripts/dts/extract_dts_includes.py
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@ -189,6 +189,45 @@ def extract_reg_prop(node_address, names, defs, def_label, div, post_label):
index += 1
def extract_controller(node_address, y_key, prefix, defs, def_label):
try:
props = list(reduced[node_address]['props'].get(y_key))
except:
props = reduced[node_address]['props'].get(y_key)
# get controller node (referenced via phandle)
cell_parent = phandles[props[0]]
try:
l_cell = reduced[cell_parent]['props'].get('label')
except KeyError:
l_cell = None
if l_cell is not None:
l_base = def_label.split('/')
l_base += prefix
prop_def = {}
prop_alias = {}
for k in reduced[cell_parent]['props']:
if 'controller' in k:
l_cellname = convert_string_to_label(str(k))
label = l_base + [l_cellname]
prop_def['_'.join(label)] = "\"" + l_cell + "\""
#generate defs also if node is referenced as an alias in dts
if node_address in aliases:
for i in aliases[node_address]:
alias_label = \
convert_string_to_label(i)
alias = [alias_label] + label[1:]
prop_alias['_'.join(alias)] = '_'.join(label)
insert_defs(node_address, defs, prop_def, prop_alias)
def extract_cells(node_address, yaml, y_key, names, index, prefix, defs,
def_label):
try:
@ -403,6 +442,7 @@ def extract_property(node_compat, yaml, node_address, y_key, y_val, names,
reduced[node_address]['props'][y_key],
names[p_index], p_index, defs, def_label)
elif 'clocks' in y_key or 'gpios' in y_key:
extract_controller(node_address, y_key, prefix, defs, def_label)
extract_cells(node_address, yaml, y_key,
names, 0, prefix, defs, def_label)
else: