Commit 69beec87 authored by Erwan Gouriou's avatar Erwan Gouriou Committed by Kumar Gala
Browse files

scripts: extract_dts_includes: generate controller #define's 



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: default avatarErwan Gouriou <erwan.gouriou@linaro.org>
parent f3caef8e

scripts/dts/extract_dts_includes.py

+40 −0
Original line number Diff line number Diff line
@@ -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:

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