Zephyr: Add configs for F75303

The F75303 driver needs a Kconfig, and needs to build in zephyr.
Add support to the device tree parsing and definition for the F75303
i2c temperature sensors.

LOW_COVERAGE_REASON=no emulator for the F75303. b:266089368
BUG=b:262409595
BRANCH=none
TEST=build the project that using the F75303 success.(mushu nami markarth)

Change-Id: Id769718fbcda3e4213c50c90c9c7918bc0a31a43
Signed-off-by: matt_wang <matt_wang@compal.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4142061
Reviewed-by: Diana Z <dzigterman@chromium.org>
Commit-Queue: Chao Gui <chaogui@google.com>
Reviewed-by: Chao Gui <chaogui@google.com>

2 files changed, 99 insertions, 6 deletions

diff --git a/driver/temp_sensor/f75303.c b/driver/temp_sensor/f75303.c
index d83f7bc4a6..dbeaf4470c 100644
--- a/driver/temp_sensor/f75303.c
+++ b/driver/temp_sensor/f75303.c
@@ -10,10 +10,19 @@
 #include "f75303.h"
 #include "hooks.h"
 #include "i2c.h"
+#include "math_util.h"
 #include "util.h"
 
+#ifdef CONFIG_ZEPHYR
+#include "temp_sensor/temp_sensor.h"
+#endif
+
+#define F75303_RESOLUTION 11
+#define F75303_SHIFT1 (16 - F75303_RESOLUTION)
+#define F75303_SHIFT2 (F75303_RESOLUTION - 8)
+
 static int temps[F75303_IDX_COUNT];
-static int8_t fake_temp[F75303_IDX_COUNT] = { -1, -1, -1 };
+static int8_t fake_temp[F75303_IDX_COUNT];
 
 /**
  * Read 8 bits register from temp sensor.
@@ -50,6 +59,34 @@ int f75303_get_val(int idx, int *temp)
 	return EC_SUCCESS;
 }
 
+static inline int f75303_reg_to_mk(int16_t reg)
+{
+	int temp_mc;
+
+	temp_mc = (((reg >> F75303_SHIFT1) * 1000) >> F75303_SHIFT2);
+
+	return MILLI_CELSIUS_TO_MILLI_KELVIN(temp_mc);
+}
+
+int f75303_get_val_k(int idx, int *temp_k_ptr)
+{
+	if (idx >= F75303_IDX_COUNT)
+		return EC_ERROR_INVAL;
+
+	*temp_k_ptr = MILLI_KELVIN_TO_KELVIN(temps[idx]);
+	return EC_SUCCESS;
+}
+
+int f75303_get_val_mk(int idx, int *temp_mk_ptr)
+{
+	if (idx >= F75303_IDX_COUNT)
+		return EC_ERROR_INVAL;
+
+	*temp_mk_ptr = temps[idx];
+	return EC_SUCCESS;
+}
+
+#ifndef CONFIG_ZEPHYR
 static void f75303_sensor_poll(void)
 {
 	get_temp(F75303_TEMP_LOCAL, &temps[F75303_IDX_LOCAL]);
@@ -57,6 +94,18 @@ static void f75303_sensor_poll(void)
 	get_temp(F75303_TEMP_REMOTE2, &temps[F75303_IDX_REMOTE2]);
 }
 DECLARE_HOOK(HOOK_SECOND, f75303_sensor_poll, HOOK_PRIO_TEMP_SENSOR);
+#else
+void f75303_update_temperature(int idx)
+{
+	int temp_reg = 0;
+
+	if (idx >= F75303_IDX_COUNT)
+		return;
+
+	if (get_temp(idx, &temp_reg) == EC_SUCCESS)
+		temps[idx] = f75303_reg_to_mk(temp_reg);
+}
+#endif /* CONFIG_ZEPHYR */
 
 static int f75303_set_fake_temp(int argc, const char **argv)
 {
@@ -89,3 +138,12 @@ static int f75303_set_fake_temp(int argc, const char **argv)
 }
 DECLARE_CONSOLE_COMMAND(f75303, f75303_set_fake_temp, "<index> <value>|off",
 			"Set fake temperature of sensor f75303.");
+
+static void f75303_init(void)
+{
+	int index;
+
+	for (index = 0; index < F75303_IDX_COUNT; index++)
+		fake_temp[index] = -1;
+}
+DECLARE_HOOK(HOOK_INIT, f75303_init, HOOK_PRIO_TEMP_SENSOR);
diff --git a/driver/temp_sensor/f75303.h b/driver/temp_sensor/f75303.h
index f8c85231da..4632978145 100644
--- a/driver/temp_sensor/f75303.h
+++ b/driver/temp_sensor/f75303.h
@@ -14,13 +14,20 @@
 #define F75303_I2C_ADDR_FLAGS 0x4C
 #endif
 
-enum f75303_index {
-	F75303_IDX_LOCAL = 0,
-	F75303_IDX_REMOTE1,
-	F75303_IDX_REMOTE2,
-	F75303_IDX_COUNT,
+/*
+ * I2C port and address information for all the board F75303 sensors should be
+ * defined in an array of the following structures, with an enum f75303_sensor
+ * indexing the array.  The enum f75303_sensor shall end with a F75303_IDX_COUNT
+ * defining the maximum number of sensors for the board.
+ */
+
+struct f75303_sensor_t {
+	int i2c_port;
+	int i2c_addr_flags;
 };
 
+extern const struct f75303_sensor_t f75303_sensors[];
+
 /* F75303 register */
 #define F75303_TEMP_LOCAL 0x00
 #define F75303_TEMP_REMOTE1 0x01
@@ -37,4 +44,32 @@ enum f75303_index {
  */
 int f75303_get_val(int idx, int *temp);
 
+/**
+ * Get the last polled value of a sensor.
+ *
+ * @param idx		Index to read, from board's enum f75303_sensor
+ *			definition
+ *
+ * @param temp_k_ptr	Destination for temperature in K.
+ *
+ * @return EC_SUCCESS if successful, non-zero if error.
+ */
+int f75303_get_val_k(int idx, int *temp_k_ptr);
+
+/**
+ * Get the last polled value of a sensor.
+ *
+ * @param idx		Index to read, from board's enum f75303_sensor
+ *			definition
+ *
+ * @param temp_mk_ptr	Destination for temperature in mK.
+ *
+ * @return EC_SUCCESS if successful, non-zero if error.
+ */
+int f75303_get_val_mk(int idx, int *temp_mk_ptr);
+
+#ifdef CONFIG_ZEPHYR
+void f75303_update_temperature(int idx);
+#endif /* CONFIG_ZEPHYR */
+
 #endif /* __CROS_EC_F75303_H */