Adding upstream version 6.7.7.upstream/6.7.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 21 deletions

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index b6f4f436a5..e93e3a9b48 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -251,7 +251,9 @@ static int stm32_usart_config_rs485(struct uart_port *port, struct ktermios *ter
 		writel_relaxed(cr3, port->membase + ofs->cr3);
 		writel_relaxed(cr1, port->membase + ofs->cr1);
 
-		rs485conf->flags |= SER_RS485_RX_DURING_TX;
+		if (!port->rs485_rx_during_tx_gpio)
+			rs485conf->flags |= SER_RS485_RX_DURING_TX;
+
 	} else {
 		stm32_usart_clr_bits(port, ofs->cr3,
 				     USART_CR3_DEM | USART_CR3_DEP);
@@ -533,7 +535,7 @@ static void stm32_usart_rx_dma_complete(void *arg)
 	unsigned int size;
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	size = stm32_usart_receive_chars(port, false);
 	uart_unlock_and_check_sysrq_irqrestore(port, flags);
 	if (size)
@@ -639,9 +641,9 @@ static void stm32_usart_tx_dma_complete(void *arg)
 	stm32_usart_tx_dma_terminate(stm32port);
 
 	/* Let's see if we have pending data to send */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	stm32_usart_transmit_chars(port);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static void stm32_usart_tx_interrupt_enable(struct uart_port *port)
@@ -885,7 +887,7 @@ static irqreturn_t stm32_usart_interrupt(int irq, void *ptr)
 	if (!stm32_port->throttled) {
 		if (((sr & USART_SR_RXNE) && !stm32_usart_rx_dma_started(stm32_port)) ||
 		    ((sr & USART_SR_ERR_MASK) && stm32_usart_rx_dma_started(stm32_port))) {
-			spin_lock(&port->lock);
+			uart_port_lock(port);
 			size = stm32_usart_receive_chars(port, false);
 			uart_unlock_and_check_sysrq(port);
 			if (size)
@@ -894,14 +896,14 @@ static irqreturn_t stm32_usart_interrupt(int irq, void *ptr)
 	}
 
 	if ((sr & USART_SR_TXE) && !(stm32_port->tx_ch)) {
-		spin_lock(&port->lock);
+		uart_port_lock(port);
 		stm32_usart_transmit_chars(port);
-		spin_unlock(&port->lock);
+		uart_port_unlock(port);
 	}
 
 	/* Receiver timeout irq for DMA RX */
 	if (stm32_usart_rx_dma_started(stm32_port) && !stm32_port->throttled) {
-		spin_lock(&port->lock);
+		uart_port_lock(port);
 		size = stm32_usart_receive_chars(port, false);
 		uart_unlock_and_check_sysrq(port);
 		if (size)
@@ -989,7 +991,7 @@ static void stm32_usart_throttle(struct uart_port *port)
 	const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	/*
 	 * Pause DMA transfer, so the RX data gets queued into the FIFO.
@@ -1002,7 +1004,7 @@ static void stm32_usart_throttle(struct uart_port *port)
 		stm32_usart_clr_bits(port, ofs->cr3, stm32_port->cr3_irq);
 
 	stm32_port->throttled = true;
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 /* Unthrottle the remote, the input buffer can now accept data. */
@@ -1012,7 +1014,7 @@ static void stm32_usart_unthrottle(struct uart_port *port)
 	const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	stm32_usart_set_bits(port, ofs->cr1, stm32_port->cr1_irq);
 	if (stm32_port->cr3_irq)
 		stm32_usart_set_bits(port, ofs->cr3, stm32_port->cr3_irq);
@@ -1026,7 +1028,7 @@ static void stm32_usart_unthrottle(struct uart_port *port)
 	if (stm32_port->rx_ch)
 		stm32_usart_rx_dma_start_or_resume(port);
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 /* Receive stop */
@@ -1043,9 +1045,20 @@ static void stm32_usart_stop_rx(struct uart_port *port)
 		stm32_usart_clr_bits(port, ofs->cr3, stm32_port->cr3_irq);
 }
 
-/* Handle breaks - ignored by us */
 static void stm32_usart_break_ctl(struct uart_port *port, int break_state)
 {
+	struct stm32_port *stm32_port = to_stm32_port(port);
+	const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
+	unsigned long flags;
+
+	spin_lock_irqsave(&port->lock, flags);
+
+	if (break_state)
+		stm32_usart_set_bits(port, ofs->rqr, USART_RQR_SBKRQ);
+	else
+		stm32_usart_clr_bits(port, ofs->rqr, USART_RQR_SBKRQ);
+
+	spin_unlock_irqrestore(&port->lock, flags);
 }
 
 static int stm32_usart_startup(struct uart_port *port)
@@ -1154,7 +1167,7 @@ static void stm32_usart_set_termios(struct uart_port *port,
 
 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk / 8);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	ret = readl_relaxed_poll_timeout_atomic(port->membase + ofs->isr,
 						isr,
@@ -1345,7 +1358,7 @@ static void stm32_usart_set_termios(struct uart_port *port,
 	writel_relaxed(cr1, port->membase + ofs->cr1);
 
 	stm32_usart_set_bits(port, ofs->cr1, BIT(cfg->uart_enable_bit));
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	/* Handle modem control interrupts */
 	if (UART_ENABLE_MS(port, termios->c_cflag))
@@ -1395,9 +1408,9 @@ static void stm32_usart_pm(struct uart_port *port, unsigned int state,
 		pm_runtime_get_sync(port->dev);
 		break;
 	case UART_PM_STATE_OFF:
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		stm32_usart_clr_bits(port, ofs->cr1, BIT(cfg->uart_enable_bit));
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 		pm_runtime_put_sync(port->dev);
 		break;
 	}
@@ -1880,9 +1893,9 @@ static void stm32_usart_console_write(struct console *co, const char *s,
 	int locked = 1;
 
 	if (oops_in_progress)
-		locked = spin_trylock_irqsave(&port->lock, flags);
+		locked = uart_port_trylock_irqsave(port, &flags);
 	else
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 
 	/* Save and disable interrupts, enable the transmitter */
 	old_cr1 = readl_relaxed(port->membase + ofs->cr1);
@@ -1896,7 +1909,7 @@ static void stm32_usart_console_write(struct console *co, const char *s,
 	writel_relaxed(old_cr1, port->membase + ofs->cr1);
 
 	if (locked)
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 }
 
 static int stm32_usart_console_setup(struct console *co, char *options)
@@ -2031,7 +2044,7 @@ static int __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port,
 		 * low-power mode.
 		 */
 		if (stm32_port->rx_ch) {
-			spin_lock_irqsave(&port->lock, flags);
+			uart_port_lock_irqsave(port, &flags);
 			/* Poll data from DMA RX buffer if any */
 			if (!stm32_usart_rx_dma_pause(stm32_port))
 				size += stm32_usart_receive_chars(port, true);