net: gptp: convert clock sync ratio from float to double

Using clock sync ratio as double instead of float improves
synchronization smoothness

Signed-off-by: Xabier Marquiegui <xmarquiegui@ainguraiiot.com>

drivers/ethernet/eth_e1000.c

@@ -380,7 +380,7 @@ static int ptp_clock_e1000_adjust(const struct device *dev, int increment)
 	return 0;
 }
 
-static int ptp_clock_e1000_rate_adjust(const struct device *dev, float ratio)
+static int ptp_clock_e1000_rate_adjust(const struct device *dev, double ratio)
 {
 	const int hw_inc = NSEC_PER_SEC / CONFIG_ETH_E1000_PTP_CLOCK_SRC_HZ;
 	struct ptp_context *ptp_context = dev->data;

drivers/ethernet/eth_mcux.c

@@ -164,7 +164,7 @@ struct eth_context {
 	struct net_pkt *ts_tx_pkt;
 	const struct device *ptp_clock;
 	enet_ptp_config_t ptp_config;
-	float clk_ratio;
+	double clk_ratio;
 	struct k_mutex ptp_mutex;
 #endif
 	struct k_sem tx_buf_sem;
@@ -1646,14 +1646,14 @@ static int ptp_clock_mcux_adjust(const struct device *dev, int increment)
 	return ret;
 }
 
-static int ptp_clock_mcux_rate_adjust(const struct device *dev, float ratio)
+static int ptp_clock_mcux_rate_adjust(const struct device *dev, double ratio)
 {
 	const int hw_inc = NSEC_PER_SEC / CONFIG_ETH_MCUX_PTP_CLOCK_SRC_HZ;
 	struct ptp_context *ptp_context = dev->data;
 	struct eth_context *context = ptp_context->eth_context;
 	int corr;
 	int32_t mul;
-	float val;
+	double val;
 
 	/* No change needed. */
 	if ((ratio > 1.0 && ratio - 1.0 < 0.00000001) ||

drivers/ethernet/eth_native_posix.c

@@ -695,7 +695,7 @@ static int ptp_clock_adjust_native_posix(const struct device *clk,
 }
 
 static int ptp_clock_rate_adjust_native_posix(const struct device *clk,
-					      float ratio)
+					      double ratio)
 {
 	ARG_UNUSED(clk);
 	ARG_UNUSED(ratio);

drivers/ethernet/eth_sam_gmac.c

@@ -2448,7 +2448,7 @@ static int ptp_clock_sam_gmac_adjust(const struct device *dev, int increment)
 }
 
 static int ptp_clock_sam_gmac_rate_adjust(const struct device *dev,
-					  float ratio)
+					  double ratio)
 {
 	return -ENOTSUP;
 }

drivers/ethernet/eth_stm32_hal.c

@@ -1267,7 +1267,7 @@ static int ptp_clock_stm32_adjust(const struct device *dev, int increment)
 	return ret;
 }
 
-static int ptp_clock_stm32_rate_adjust(const struct device *dev, float ratio)
+static int ptp_clock_stm32_rate_adjust(const struct device *dev, double ratio)
 {
 	struct ptp_context *ptp_context = dev->data;
 	struct eth_stm32_hal_dev_data *eth_dev_data = ptp_context->eth_dev_data;

include/drivers/ptp_clock.h

@@ -26,7 +26,7 @@ __subsystem struct ptp_clock_driver_api {
 	int (*set)(const struct device *dev, struct net_ptp_time *tm);
 	int (*get)(const struct device *dev, struct net_ptp_time *tm);
 	int (*adjust)(const struct device *dev, int increment);
-	int (*rate_adjust)(const struct device *dev, float ratio);
+	int (*rate_adjust)(const struct device *dev, double ratio);
 };
 
 /**
@@ -89,7 +89,7 @@ static inline int ptp_clock_adjust(const struct device *dev, int increment)
  *
  * @return 0 if ok, <0 if error
  */
-static inline int ptp_clock_rate_adjust(const struct device *dev, float rate)
+static inline int ptp_clock_rate_adjust(const struct device *dev, double rate)
 {
 	const struct ptp_clock_driver_api *api =
 		(const struct ptp_clock_driver_api *)dev->api;

tests/net/ptp/clock/src/main.c

@@ -218,7 +218,7 @@ static int my_ptp_clock_adjust(const struct device *dev, int increment)
 	return 0;
 }
 
-static int my_ptp_clock_rate_adjust(const struct device *dev, float ratio)
+static int my_ptp_clock_rate_adjust(const struct device *dev, double ratio)
 {
 	return 0;
 }