[Enhancement] Support no-IRQ for SPI Ethernet W5500 (#9251)

* [W5500] Support no-IRQ

Requires this commit from ESP-IDF to be cherry picked:
espressif/esp-idf@fd0a1dc

* Remove unrelated code to support ETH_PHY_JL1101

* remove the commented check and fix the error message

* Guard feature to be enabled when IDF backports it to v5.1

---------

Co-authored-by: Lucas Saavedra Vaz <32426024+lucasssvaz@users.noreply.github.com>
Co-authored-by: Me No Dev <me-no-dev@users.noreply.github.com>

Author: 3 people

libraries/Ethernet/src/ETH.cpp

@@ -351,8 +351,13 @@ bool ETHClass::beginSPI(eth_phy_type_t type, uint8_t phy_addr, int cs, int irq,
         log_w("ETH Already Started");
         return true;
     }
+#if ETH_SPI_SUPPORTS_NO_IRQ
+    if(cs < 0){
+        log_e("CS pin must be defined!");
+#else
     if(cs < 0 || irq < 0){
         log_e("CS and IRQ pins must be defined!");
+#endif
         return false;
     }
 
@@ -447,6 +452,11 @@ bool ETHClass::beginSPI(eth_phy_type_t type, uint8_t phy_addr, int cs, int irq,
     if(type == ETH_PHY_W5500){
         eth_w5500_config_t mac_config = ETH_W5500_DEFAULT_CONFIG(spi_host, &spi_devcfg);
         mac_config.int_gpio_num = _pin_irq;
+#if ETH_SPI_SUPPORTS_NO_IRQ
+        if (_pin_irq < 0) {
+            mac_config.poll_period_ms = 10;
+        }
+#endif
 #if ETH_SPI_SUPPORTS_CUSTOM
         if(_spi != NULL){
             mac_config.custom_spi_driver.config = this;
@@ -586,8 +596,13 @@ bool ETHClass::beginSPI(eth_phy_type_t type, uint8_t phy_addr, int cs, int irq,
 #if ETH_SPI_SUPPORTS_CUSTOM
     }
 #endif
-    if(!perimanSetPinBus(_pin_irq, ESP32_BUS_TYPE_ETHERNET_SPI, (void *)(this), -1, -1)){ goto err; }
-
+#if ETH_SPI_SUPPORTS_NO_IRQ
+    if(_pin_irq != -1){
+#endif
+        if(!perimanSetPinBus(_pin_irq, ESP32_BUS_TYPE_ETHERNET_SPI, (void *)(this), -1, -1)){ goto err; }
+#if ETH_SPI_SUPPORTS_NO_IRQ
+    }
+#endif
     if(_pin_sck != -1){
         if(!perimanSetPinBus(_pin_sck, ESP32_BUS_TYPE_ETHERNET_SPI, (void *)(this), -1, -1)){ goto err; }
     }