fwk: sunflower: dynamic change the charging current

If the charger temperature over 73C, EC needs to reduce the charging
current to 3200 mA; If the charger temperature over 78C, EC needs
to reduce the charging current to 2800 mA.

BRANCH=fwk-sunflower-26784
BUG=https://app.clickup.com/t/86et2rz87
TEST=check the charging current does not change when the system in S0 state
TEST=check the charging current reduces to 3200mA when the charger temperature over 73C
TEST=check the charging current reduces to 2800mA when the charger temperature over 78C

Signed-off-by: Josh Tsai <Josh_Tsai@compal.com>

Author: Josh-Tsai

zephyr/program/framework/sunflower/project.conf

@@ -19,6 +19,7 @@ CONFIG_PLATFORM_EC_NUM_FANS=1
 CONFIG_PLATFORM_EC_CUSTOM_FAN_CONTROL=n
 
 # Charger
+CONFIG_PLATFORM_EC_CHARGER_PROFILE_OVERRIDE=y
 CONFIG_PLATFORM_EC_CHARGER_SENSE_RESISTOR=10
 CONFIG_PLATFORM_EC_CHARGER_SENSE_RESISTOR_AC=20
 CONFIG_PLATFORM_EC_CHARGER_DEFAULT_CURRENT_LIMIT=500

zephyr/program/framework/sunflower/src/charger.c

@@ -11,11 +11,14 @@
 #include "charge_manager.h"
 #include "charge_state.h"
 #include "charger.h"
+#include "common.h"
 #include "console.h"
 #include "cypress_pd_common.h"
 #include "driver/charger/isl9241.h"
+#include "driver/temp_sensor/f75303.h"
 #include "extpower.h"
 #include "hooks.h"
+#include "math_util.h"
 #include "i2c.h"
 #include "power_sequence.h"
 #include "util.h"
@@ -25,6 +28,10 @@
 
 static bool charger_psys_enable_flag;
 
+/* charging current is limited to 3200mA or 2800mA */
+#define CHARGING_CURRENT_3200	3200
+#define CHARGING_CURRENT_2800	2800
+
 #ifdef CONFIG_PLATFORM_EC_CHARGER_INIT_CUSTOM
 static void charger_chips_init(void);
 static void charger_chips_init_retry(void)
@@ -350,3 +357,44 @@ void acok_control(int voltage, int port)
 	if (port == -1)
 		board_fast_discharge_enable(false);
 }
+
+int charger_profile_override(struct charge_state_data *curr)
+{
+	int charger_temp, rv;
+
+	/**
+	 * Do not change the charge current when the system in S0 state.
+	 * Because we don't have to avoid high temperature it's expected
+	 * that the fan runs in S0.
+	 */
+	if (chipset_in_state(CHIPSET_STATE_ON))
+		return EC_SUCCESS;
+
+	rv = isl9241_get_temperature_val(0, &charger_temp);
+
+	if (rv == EC_SUCCESS) {
+
+		if (K_TO_C(charger_temp) >= 73 && K_TO_C(charger_temp) < 78)
+			curr->requested_current =
+				MIN(curr->requested_current, CHARGING_CURRENT_3200);
+
+		if (K_TO_C(charger_temp) >= 78)
+			curr->requested_current =
+				MIN(curr->requested_current, CHARGING_CURRENT_2800);
+	}
+
+	return 0;
+}
+
+/* Not be used */
+enum ec_status charger_profile_override_get_param(uint32_t param,
+						  uint32_t *value)
+{
+	return EC_RES_INVALID_PARAM;
+}
+
+enum ec_status charger_profile_override_set_param(uint32_t param,
+						  uint32_t value)
+{
+	return EC_RES_INVALID_PARAM;
+}