[coreboot-gerrit] [S] Change in coreboot[master]: ec/google/chromeec: Add retimer flag for mux device

[Prashant Malani (Code Review)]

Prashant Malani has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/71663 )

Change subject: ec/google/chromeec: Add retimer flag for mux device
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ec/google/chromeec: Add retimer flag for mux device

Not all ports have retimers. Add a property to denote that a particular
port has a retimer (instead of assuming that all ports have retimers).

BUG=b:263964979
TEST=Verified on guybrush; SSDT shows retimer-switch on port1 when
device tree is updated accordingly.

Change-Id: I754323236d2912777b63cede0fce2ccf7882cfea
Signed-off-by: Prashant Malani 
---
M src/ec/google/chromeec/mux/conn/chip.h
M src/ec/google/chromeec/mux/conn/conn.c
2 files changed, 28 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/63/71663/1

diff --git a/src/ec/google/chromeec/mux/conn/chip.h b/src/ec/google/chromeec/mux/conn/chip.h
index 953b625..fd0ccf8 100644
--- a/src/ec/google/chromeec/mux/conn/chip.h
+++ b/src/ec/google/chromeec/mux/conn/chip.h
@@ -5,9 +5,11 @@

struct ec_google_chromeec_mux_conn_config {
    /* When set to true, this signifies that the mux device
-	 * is used as a Type-C mode switch in addition to
-	 * a retimer switch. */
+	 * is used as a Type-C mode switch. */
    bool mode_switch;
+	/* When set to true, this signifies that the mux device
+	 * is used as a Type-C retimer switch. */
+	bool retimer_switch;
 };

#endif /* EC_GOOGLE_CHROMEEC_MUX_CONN_CHIP_H */
diff --git a/src/ec/google/chromeec/mux/conn/conn.c b/src/ec/google/chromeec/mux/conn/conn.c
index cb7478a..e179c33 100644
--- a/src/ec/google/chromeec/mux/conn/conn.c
+++ b/src/ec/google/chromeec/mux/conn/conn.c
@@ -24,9 +24,14 @@

acpigen_write_name_integer("_ADR", dev->path.generic.id);

-	if (config && config->mode_switch) {
+	if (config) {
    	struct acpi_dp *dsd = acpi_dp_new_table("_DSD");
-		acpi_dp_add_integer(dsd, "mode-switch", 1);
+
+		if (config->mode_switch)
+			acpi_dp_add_integer(dsd, "mode-switch", 1);
+		if (config->retimer_switch)
+			acpi_dp_add_integer(dsd, "retimer-switch", 1);
+
    	acpi_dp_write(dsd);
    }