Smart gpios fixes 3 (#795)

* pin_repository: provide readable pin names in error cases

* io_pins: remove getBrain_pin_eExt

We have getBrain_pin_eExt in io_pins.cpp and hwPortname in
pin_repository.cpp.
First uses auto-generated enums, second one uses runtime data to
provide name of hw pin.
Removing first saves us about 2K of flash couse big auto-generated
switch with pin names no more used by anyone and gets optimized out.

* gpios: mc33972: CS pin is now requested at smart_gpios.pcc

* getSpiDevice: support SPI4

* smart_gpios.cpp: startSmartCsPins set CSs to inactive state

OutputPin:initPin initializes pin with false value. This is active
state for SPI Chip Selects. Set to 1 to deselect all chips.

firmware/hw_layer/drivers/gpio/core.c

@@ -112,8 +112,6 @@ const char *gpiochips_getPinName(unsigned int pin)
 		offset = pin - chip->base;
 		if ((chip->gpio_names) && (chip->gpio_names[offset]))
 			return chip->gpio_names[offset];
-		else
-			return chip->name;
 	}
 
 	return NULL;

firmware/hw_layer/drivers/gpio/mc33972.c

@@ -294,13 +294,8 @@ int mc33972_init(void * data)
 {
 	int ret;
 	struct mc33972_priv *chip;
-	const struct mc33972_config *cfg;
 
 	chip = (struct mc33972_priv *)data;
-	cfg = chip->cfg;
-
-	/* mark pins used */
-	ret = gpio_pin_markUsed(cfg->spi_config.ssport, cfg->spi_config.sspad, DRIVER_NAME " CS");
 
 	ret = mc33972_chip_init(chip);
 	if (ret)

firmware/hw_layer/hardware.cpp

@@ -135,6 +135,11 @@ SPIDriver * getSpiDevice(spi_device_e spiDevice) {
 	if (spiDevice == SPI_DEVICE_3) {
 		return &SPID3;
 	}
+#endif
+#if STM32_SPI_USE_SPI4
+	if (spiDevice == SPI_DEVICE_4) {
+		return &SPID4;
+	}
 #endif
 	firmwareError(CUSTOM_ERR_UNEXPECTED_SPI, "Unexpected SPI device: %d", spiDevice);
 	return NULL;

firmware/hw_layer/io_pins.cpp

@@ -52,18 +52,6 @@ bool efiReadPin(brain_pin_e pin) {
 	return false;
 }
 
-static const char *getBrain_pin_eExt(brain_pin_e value){
-	const char * result = getBrain_pin_e(value);
-	if (result != NULL)
-		return result;
-#if (BOARD_EXT_GPIOCHIPS > 0)
-    /* gpichips */
-    return gpiochips_getPinName(value);
-#else
-    return NULL;
-#endif
-}
-
 /**
  * This method would set an error condition if pin is already used
  */
@@ -73,10 +61,6 @@ void efiSetPadMode(const char *msg, brain_pin_e brainPin, iomode_t mode)
 
 	//efiAssertVoid(OBD_PCM_Processor_Fault, pin != EFI_ERROR_CODE, "pin_error");
 
-#if ! EFI_BOOTLOADER
-	scheduleMsg(&logger, "%s on %s", msg, getBrain_pin_eExt(brainPin));
-#endif
-
 	wasUsed = brain_pin_markUsed(brainPin, msg);
 
 	if (!wasUsed) {

firmware/hw_layer/pin_repository.cpp

@@ -195,8 +195,15 @@ const char *hwPortname(brain_pin_e brainPin) {
 	}
 	#if (BOARD_EXT_GPIOCHIPS > 0)
 		else {
-			chprintf((BaseSequentialStream *) &portNameStream, "ext:%s.%d (%s)",
-				gpiochips_getChipName(brainPin), gpiochips_getPinOffset(brainPin), gpiochips_getPinName(brainPin));
+			const char *pin_name = gpiochips_getPinName(brainPin);
+
+			if (pin_name) {
+				chprintf((BaseSequentialStream *) &portNameStream, "ext:%s",
+					pin_name);
+			} else {
+				chprintf((BaseSequentialStream *) &portNameStream, "ext:%s.%d",
+					gpiochips_getChipName(brainPin), gpiochips_getPinOffset(brainPin));
+			}
 		}
 	#endif
 	portNameStream.buffer[portNameStream.eos] = 0; // need to terminate explicitly
@@ -253,6 +260,10 @@ bool brain_pin_markUsed(brain_pin_e brainPin, const char *msg)
 		return false;
 	}
 
+#if ! EFI_BOOTLOADER
+	scheduleMsg(&logger, "%s on %s", msg, hwPortname(brainPin));
+#endif
+
 	index = brainPin_to_index(brainPin);
 	if (index < 0)
 		return true;
@@ -264,7 +275,7 @@ bool brain_pin_markUsed(brain_pin_e brainPin, const char *msg)
 		 * connected, so the warning is never displayed on the console and that's quite a problem!
 		 */
 //		warning(OBD_PCM_Processor_Fault, "brain pin %d req by %s used by %s", brainPin, msg, PIN_USED[index]);
-		firmwareError(CUSTOM_ERR_PIN_ALREADY_USED_1, "brain pin %d req by %s used by %s", brainPin, msg, PIN_USED[index]);
+		firmwareError(CUSTOM_ERR_PIN_ALREADY_USED_1, "brain pin %s req by %s used by %s", hwPortname(brainPin), msg, PIN_USED[index]);
 		return true;
 	}
 

firmware/hw_layer/smart_gpio.cpp

@@ -205,14 +205,17 @@ void startSmartCsPins() {
 #if (BOARD_TLE8888_COUNT > 0)
 	tle8888Cs.initPin("tle8888 CS", engineConfiguration->tle8888_cs,
 				&engineConfiguration->tle8888_csPinMode);
+	tle8888Cs.setValue(true);
 #endif /* BOARD_TLE8888_COUNT */
 #if (BOARD_TLE6240_COUNT > 0)
 	tle6240Cs.initPin("tle6240 CS", engineConfiguration->tle6240_cs,
 				&engineConfiguration->tle6240_csPinMode);
+	tle6240Cs.setValue(true);
 #endif /* BOARD_TLE6240_COUNT */
 #if (BOARD_MC33972_COUNT > 0)
 	mc33972Cs.initPin("mc33972 CS", boardConfiguration->mc33972_cs,
 				&boardConfiguration->mc33972_csPinMode);
+	mc33972Cs.setValue(true);
 #endif /* BOARD_MC33972_COUNT */
 }
 #endif /* (BOARD_EXT_GPIOCHIPS > 0) */