[M] Change in coreboot[main]: mb/google/brya/bb/trulo: Refactor gpio pad configuration

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eric Lai, Kapil Porwal, Nick Vaccaro.

Subrata Banik has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/82629?usp=email )

Change subject: mb/google/brya/bb/trulo: Refactor gpio pad configuration
......................................................................

mb/google/brya/bb/trulo: Refactor gpio pad configuration

This patch tries to simplify the baseboard/variant GPIO programming
for Google/Trulo. The idea is to let each variant maintain
its own complete GPIO PAD configuration table instead of having a
back-and-forth call between baseboard and variants.

With this patch coreboot performing GPIO programming is now much
simpler where the common code block calls into respective variants
and gets the gpio table prior to the pad configuration.

BUG=b:334826281 ([TWL] Decouple GPIO from baseboard to variant)
TEST=Able to build google/orisa.

Change-Id: I4ab88ac094a45c608cd894feb5eeec24b867527a
Signed-off-by: Subrata Banik 
---
M src/mainboard/google/brya/variants/baseboard/trulo/Makefile.mk
D src/mainboard/google/brya/variants/baseboard/trulo/gpio.c
A src/mainboard/google/brya/variants/orisa/Makefile.mk
A src/mainboard/google/brya/variants/orisa/gpio.c
A src/mainboard/google/brya/variants/trulo/Makefile.mk
A src/mainboard/google/brya/variants/trulo/gpio.c
6 files changed, 110 insertions(+), 51 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/29/82629/1

diff --git a/src/mainboard/google/brya/variants/baseboard/trulo/Makefile.mk b/src/mainboard/google/brya/variants/baseboard/trulo/Makefile.mk
index 54a5c5b..be05cd4 100644
--- a/src/mainboard/google/brya/variants/baseboard/trulo/Makefile.mk
+++ b/src/mainboard/google/brya/variants/baseboard/trulo/Makefile.mk
@@ -1,8 +1,3 @@
 ## SPDX-License-Identifier: GPL-2.0-only

-bootblock-y += gpio.c
-
 romstage-y += memory.c
-romstage-y += gpio.c
-
-ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/baseboard/trulo/gpio.c b/src/mainboard/google/brya/variants/baseboard/trulo/gpio.c
deleted file mode 100644
index 410f194..0000000
--- a/src/mainboard/google/brya/variants/baseboard/trulo/gpio.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-
-#include <baseboard/gpio.h>
-#include <baseboard/variants.h>
-#include <soc/gpio.h>
-#include <types.h>
-#include <vendorcode/google/chromeos/chromeos.h>
-
-/* Pad configuration in ramstage */
-static const struct pad_config gpio_table[] = {
-	/* TODO */
-};
-
-/* Early pad configuration in bootblock */
-static const struct pad_config early_gpio_table[] = {
-	/* TODO */
-};
-
-const struct pad_config *__weak variant_gpio_table(size_t *num)
-{
-	*num = ARRAY_SIZE(gpio_table);
-	return gpio_table;
-}
-
-const struct pad_config *__weak variant_gpio_override_table(size_t *num)
-{
-	*num = 0;
-	return NULL;
-}
-
-const struct pad_config *__weak variant_early_gpio_table(size_t *num)
-{
-	*num = ARRAY_SIZE(early_gpio_table);
-	return early_gpio_table;
-}
-
-static const struct cros_gpio cros_gpios[] = {
-	/* TODO */
-};
-DECLARE_CROS_GPIOS(cros_gpios);
-
-const struct pad_config *__weak variant_romstage_gpio_table(size_t *num)
-{
-	*num = 0;
-	return NULL;
-}
diff --git a/src/mainboard/google/brya/variants/orisa/Makefile.mk b/src/mainboard/google/brya/variants/orisa/Makefile.mk
new file mode 100644
index 0000000..2fa692a
--- /dev/null
+++ b/src/mainboard/google/brya/variants/orisa/Makefile.mk
@@ -0,0 +1,3 @@
+bootblock-y += gpio.c
+romstage-y += gpio.c
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/orisa/gpio.c b/src/mainboard/google/brya/variants/orisa/gpio.c
new file mode 100644
index 0000000..c4f5183
--- /dev/null
+++ b/src/mainboard/google/brya/variants/orisa/gpio.c
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <boardid.h>
+#include <soc/gpio.h>
+#include <types.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config gpio_table[] = {
+	/* TODO */
+};
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+	/* TODO */
+};
+
+/* Fill romstage gpio configuration */
+static const struct pad_config romstage_gpio_table[] = {
+	/* TODO */
+};
+
+const struct pad_config *variant_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(gpio_table);
+	return gpio_table;
+}
+
+const struct pad_config *variant_gpio_override_table(size_t *num)
+{
+	*num = 0;
+	return NULL;
+}
+
+const struct pad_config *variant_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
+
+static const struct cros_gpio cros_gpios[] = {
+	/* TODO */
+};
+DECLARE_CROS_GPIOS(cros_gpios);
+
+const struct pad_config *variant_romstage_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(romstage_gpio_table);
+	return romstage_gpio_table;
+}
diff --git a/src/mainboard/google/brya/variants/trulo/Makefile.mk b/src/mainboard/google/brya/variants/trulo/Makefile.mk
new file mode 100644
index 0000000..2fa692a
--- /dev/null
+++ b/src/mainboard/google/brya/variants/trulo/Makefile.mk
@@ -0,0 +1,3 @@
+bootblock-y += gpio.c
+romstage-y += gpio.c
+ramstage-y += gpio.c
diff --git a/src/mainboard/google/brya/variants/trulo/gpio.c b/src/mainboard/google/brya/variants/trulo/gpio.c
new file mode 100644
index 0000000..c4f5183
--- /dev/null
+++ b/src/mainboard/google/brya/variants/trulo/gpio.c
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/gpio.h>
+#include <baseboard/variants.h>
+#include <boardid.h>
+#include <soc/gpio.h>
+#include <types.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+/* Pad configuration in ramstage */
+static const struct pad_config gpio_table[] = {
+	/* TODO */
+};
+
+/* Early pad configuration in bootblock */
+static const struct pad_config early_gpio_table[] = {
+	/* TODO */
+};
+
+/* Fill romstage gpio configuration */
+static const struct pad_config romstage_gpio_table[] = {
+	/* TODO */
+};
+
+const struct pad_config *variant_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(gpio_table);
+	return gpio_table;
+}
+
+const struct pad_config *variant_gpio_override_table(size_t *num)
+{
+	*num = 0;
+	return NULL;
+}
+
+const struct pad_config *variant_early_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(early_gpio_table);
+	return early_gpio_table;
+}
+
+static const struct cros_gpio cros_gpios[] = {
+	/* TODO */
+};
+DECLARE_CROS_GPIOS(cros_gpios);
+
+const struct pad_config *variant_romstage_gpio_table(size_t *num)
+{
+	*num = ARRAY_SIZE(romstage_gpio_table);
+	return romstage_gpio_table;
+}