From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/tty/serial/8250/8250.h | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/kernel/drivers/tty/serial/8250/8250.h b/kernel/drivers/tty/serial/8250/8250.h
index 2e001e2..97df058 100644
--- a/kernel/drivers/tty/serial/8250/8250.h
+++ b/kernel/drivers/tty/serial/8250/8250.h
@@ -342,6 +342,13 @@
extern void serial8250_rx_dma_flush(struct uart_8250_port *);
extern int serial8250_request_dma(struct uart_8250_port *);
extern void serial8250_release_dma(struct uart_8250_port *);
+
+static inline bool serial8250_tx_dma_running(struct uart_8250_port *p)
+{
+ struct uart_8250_dma *dma = p->dma;
+
+ return dma && dma->tx_running;
+}
#else
static inline int serial8250_tx_dma(struct uart_8250_port *p)
{
@@ -363,6 +370,11 @@
return -1;
}
static inline void serial8250_release_dma(struct uart_8250_port *p) { }
+
+static inline bool serial8250_tx_dma_running(struct uart_8250_port *p)
+{
+ return false;
+}
#endif
static inline int ns16550a_goto_highspeed(struct uart_8250_port *up)
--
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