Change in coreboot[master]: drivers/wwan/fm: Add support for _PTS for Fibocom 5G WWAN

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/61886 )

Change subject: drivers/wwan/fm: Add support for _PTS for Fibocom 5G WWAN
......................................................................

drivers/wwan/fm: Add support for _PTS for Fibocom 5G WWAN

Add DPTS (device prepare to sleep) method that is to be called in
mainboard's _SB.MPTS, which is called in _PTS.

Signed-off-by: Cliff Huang 
Change-Id: Ie308f74940a33711a398bc11d0550cb06b55cdcf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61886
Tested-by: build bot (Jenkins) 
Reviewed-by: Tim Wawrzynczak 
---
M src/drivers/wwan/fm/acpi_fm350gl.c
1 file changed, 18 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Tim Wawrzynczak: Looks good to me, approved

diff --git a/src/drivers/wwan/fm/acpi_fm350gl.c b/src/drivers/wwan/fm/acpi_fm350gl.c
index 67bd4a1..80370ad 100644
--- a/src/drivers/wwan/fm/acpi_fm350gl.c
+++ b/src/drivers/wwan/fm/acpi_fm350gl.c
@@ -184,6 +184,22 @@
    acpigen_write_method_end(); /* Method */
 }

+/*
+ * Generate DPTS (Device Prepare To Seep) Method. This is called in
+ *  .SB.MPTS Method.
+ */
+static void wwan_fm350gl_acpi_method_dpts(const struct device *parent_dev,
+			 const struct drivers_wwan_fm_config *config)
+{
+	acpigen_write_method_serialized("DPTS", 1);
+	{
+		/* Perform 1st Half of FLDR Flow for cold reset: FHRF (1) */
+		acpigen_emit_namestring("FHRF");
+		acpigen_emit_byte(RESET_TYPE_COLD);
+	}
+	acpigen_write_method_end(); /* Method */
+}
+
 static const char *wwan_fm350gl_acpi_name(const struct device *dev)
 {
    /* Attached device name must be "PXSX" for the Linux Kernel to recognize it. */
@@ -224,6 +240,7 @@
    		wwan_fm350gl_acpi_method_fhrf(parent, config);
    		wwan_fm350gl_acpi_method_shrf(parent, config);
    		wwan_fm350gl_acpi_method_rst(parent, config);
+			wwan_fm350gl_acpi_method_dpts(parent, config);
    		/* NOTE: the 5G driver will call MRST._RST to trigger a cold reset
    		 * during firmware update.
    		 */
@@ -243,7 +260,7 @@
    .read_resources  = noop_read_resources,
    .set_resources   = noop_set_resources,
    .acpi_fill_ssdt  = wwan_fm350gl_acpi_fill_ssdt,
-	.acpi_name       = wwan_fm350gl_acpi_name,
+	.acpi_name       = wwan_fm350gl_acpi_name
 };

static void wwan_fm350gl_acpi_enable(struct device *dev)