mb/google/octopus: Clean up LTE power off function

All octopus board share the same power off sequence.
Move to smihandler.c instead variant.c.

BUG=b:168075958
BRANCH=octopus
TEST=build image and verify on the DUT with LTE DB.

Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I2be5a656fb42fff99c56d21aaa73ed9140caad37
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45436
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/mainboard/google/octopus/smihandler.c b/src/mainboard/google/octopus/smihandler.c
index 2c68045685..488ba07cc4 100644
--- a/src/mainboard/google/octopus/smihandler.c
+++ b/src/mainboard/google/octopus/smihandler.c
@@ -3,15 +3,22 @@
 #include <acpi/acpi.h>
 #include <baseboard/variants.h>
 #include <cpu/x86/smm.h>
+#include <delay.h>
 #include <ec/google/chromeec/ec.h>
 #include <ec/google/chromeec/smm.h>
 #include <elog.h>
+#include <gpio.h>
 #include <intelblocks/smihandler.h>
 #include <soc/pm.h>
 #include <soc/gpio.h>
 #include <variant/ec.h>
 #include <variant/gpio.h>
 
+struct gpio_with_delay {
+	gpio_t gpio;
+	unsigned int delay_msecs;
+};
+
 void mainboard_smi_gpi_handler(const struct gpi_status *sts)
 {
 	if (gpi_status_get(sts, EC_SMI_GPI))
@@ -54,3 +61,27 @@ void __weak variant_smi_sleep(u8 slp_typ)
 {
 	/* Leave for the variant to implement if necessary. */
 }
+
+void power_off_lte_module(void)
+{
+
+	const struct gpio_with_delay lte_power_off_gpios[] = {
+		{
+			GPIO_161, /* AVS_I2S1_MCLK -- PLT_RST_LTE_L */
+			30,
+		},
+		{
+			GPIO_117, /* PCIE_WAKE1_B -- FULL_CARD_POWER_OFF */
+			100
+		},
+		{
+			GPIO_67, /* UART2-CTS_B -- EN_PP3300_DX_LTE_SOC */
+			0
+		}
+	};
+
+	for (int i = 0; i < ARRAY_SIZE(lte_power_off_gpios); i++) {
+		gpio_output(lte_power_off_gpios[i].gpio, 0);
+		mdelay(lte_power_off_gpios[i].delay_msecs);
+	}
+}