dtoc: add support to scan drivers

Currently dtoc scans dtbs to convert them to struct platdata and
to generate U_BOOT_DEVICE entries. These entries need to be filled
with the driver name, but at this moment the information used is the
compatible name present in the dtb. This causes that only nodes with
a compatible name that matches a driver name generate a working
entry.

In order to improve this behaviour, this patch adds to dtoc the
capability of scan drivers source code to generate a list of valid driver
names and aliases. This allows to generate U_BOOT_DEVICE entries using
valid driver names and rise a warning in the case a name is not valid.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Open files in utf-8 mode:
Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/tools/dtoc/test_dtoc.py b/tools/dtoc/test_dtoc.py
index 8498e8303c2..91fc9d77f3d 100755
--- a/tools/dtoc/test_dtoc.py
+++ b/tools/dtoc/test_dtoc.py
@@ -268,6 +268,39 @@ U_BOOT_DEVICE(pmic_at_9) = {
 
 ''', data)
 
+    def test_driver_alias(self):
+        """Test output from a device tree file with a driver alias"""
+        dtb_file = get_dtb_file('dtoc_test_driver_alias.dts')
+        output = tools.GetOutputFilename('output')
+        dtb_platdata.run_steps(['struct'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self._CheckStrings(HEADER + '''
+struct dtd_sandbox_gpio {
+\tconst char *\tgpio_bank_name;
+\tbool\t\tgpio_controller;
+\tfdt32_t\t\tsandbox_gpio_count;
+};
+#define dtd_sandbox_gpio_alias dtd_sandbox_gpio
+''', data)
+
+        dtb_platdata.run_steps(['platdata'], dtb_file, False, output)
+        with open(output) as infile:
+            data = infile.read()
+        self._CheckStrings(C_HEADER + '''
+static const struct dtd_sandbox_gpio dtv_gpios_at_0 = {
+\t.gpio_bank_name\t\t= "a",
+\t.gpio_controller\t= true,
+\t.sandbox_gpio_count\t= 0x14,
+};
+U_BOOT_DEVICE(gpios_at_0) = {
+\t.name\t\t= "sandbox_gpio",
+\t.platdata\t= &dtv_gpios_at_0,
+\t.platdata_size\t= sizeof(dtv_gpios_at_0),
+};
+
+''', data)
+
     def test_phandle(self):
         """Test output from a node containing a phandle reference"""
         dtb_file = get_dtb_file('dtoc_test_phandle.dts')