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path: root/drivers/tty/serial/8250/8250_dwlib.h
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Diffstat (limited to 'drivers/tty/serial/8250/8250_dwlib.h')
-rw-r--r--drivers/tty/serial/8250/8250_dwlib.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_dwlib.h b/drivers/tty/serial/8250/8250_dwlib.h
index 83d528e5cc21..055bfdc87985 100644
--- a/drivers/tty/serial/8250/8250_dwlib.h
+++ b/drivers/tty/serial/8250/8250_dwlib.h
@@ -1,10 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/* Synopsys DesignWare 8250 library header file. */
+#include <linux/io.h>
+#include <linux/notifier.h>
#include <linux/types.h>
+#include <linux/workqueue.h>
#include "8250.h"
+struct clk;
+struct reset_control;
+
struct dw8250_port_data {
/* Port properties */
int line;
@@ -14,7 +20,52 @@ struct dw8250_port_data {
/* Hardware configuration */
u8 dlf_size;
+
+ /* RS485 variables */
+ bool hw_rs485_support;
+};
+
+struct dw8250_platform_data {
+ u8 usr_reg;
+ u32 cpr_val;
+ unsigned int quirks;
+};
+
+struct dw8250_data {
+ struct dw8250_port_data data;
+ const struct dw8250_platform_data *pdata;
+
+ int msr_mask_on;
+ int msr_mask_off;
+ struct clk *clk;
+ struct clk *pclk;
+ struct notifier_block clk_notifier;
+ struct work_struct clk_work;
+ struct reset_control *rst;
+
+ unsigned int skip_autocfg:1;
+ unsigned int uart_16550_compatible:1;
};
void dw8250_do_set_termios(struct uart_port *p, struct ktermios *termios, struct ktermios *old);
void dw8250_setup_port(struct uart_port *p);
+
+static inline struct dw8250_data *to_dw8250_data(struct dw8250_port_data *data)
+{
+ return container_of(data, struct dw8250_data, data);
+}
+
+static inline u32 dw8250_readl_ext(struct uart_port *p, int offset)
+{
+ if (p->iotype == UPIO_MEM32BE)
+ return ioread32be(p->membase + offset);
+ return readl(p->membase + offset);
+}
+
+static inline void dw8250_writel_ext(struct uart_port *p, int offset, u32 reg)
+{
+ if (p->iotype == UPIO_MEM32BE)
+ iowrite32be(reg, p->membase + offset);
+ else
+ writel(reg, p->membase + offset);
+}