mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
83 lines
2.7 KiB
Diff
83 lines
2.7 KiB
Diff
--- a/drivers/serial/8250.c
|
|
+++ b/drivers/serial/8250.c
|
|
@@ -305,9 +305,9 @@ static const struct serial8250_config ua
|
|
},
|
|
};
|
|
|
|
-#if defined(CONFIG_MIPS_ALCHEMY)
|
|
+#if defined(CONFIG_MIPS_ALCHEMY) || defined (CONFIG_SERIAL_8250_RT288X)
|
|
|
|
-/* Au1x00 UART hardware has a weird register layout */
|
|
+/* Au1x00 and RT288x UART hardware has a weird register layout */
|
|
static const u8 au_io_in_map[] = {
|
|
[UART_RX] = 0,
|
|
[UART_IER] = 2,
|
|
@@ -571,8 +571,8 @@ static inline void _serial_dl_write(stru
|
|
serial_outp(up, UART_DLM, value >> 8 & 0xff);
|
|
}
|
|
|
|
-#if defined(CONFIG_MIPS_ALCHEMY)
|
|
-/* Au1x00 haven't got a standard divisor latch */
|
|
+#if defined(CONFIG_MIPS_ALCHEMY) || defined (CONFIG_SERIAL_8250_RT288X)
|
|
+/* Au1x00 and RT288x haven't got a standard divisor latch */
|
|
static int serial_dl_read(struct uart_8250_port *up)
|
|
{
|
|
if (up->port.iotype == UPIO_AU)
|
|
@@ -779,22 +779,19 @@ static int size_fifo(struct uart_8250_po
|
|
*/
|
|
static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p)
|
|
{
|
|
- unsigned char old_dll, old_dlm, old_lcr;
|
|
+ unsigned char old_lcr;
|
|
+ unsigned int old_dl;
|
|
unsigned int id;
|
|
|
|
old_lcr = serial_inp(p, UART_LCR);
|
|
serial_outp(p, UART_LCR, UART_LCR_DLAB);
|
|
|
|
- old_dll = serial_inp(p, UART_DLL);
|
|
- old_dlm = serial_inp(p, UART_DLM);
|
|
+ old_dl = serial_dl_read(p);
|
|
|
|
- serial_outp(p, UART_DLL, 0);
|
|
- serial_outp(p, UART_DLM, 0);
|
|
+ serial_dl_write(p, 0);
|
|
+ id = serial_dl_read(p);
|
|
|
|
- id = serial_inp(p, UART_DLL) | serial_inp(p, UART_DLM) << 8;
|
|
-
|
|
- serial_outp(p, UART_DLL, old_dll);
|
|
- serial_outp(p, UART_DLM, old_dlm);
|
|
+ serial_dl_write(p, old_dl);
|
|
serial_outp(p, UART_LCR, old_lcr);
|
|
|
|
return id;
|
|
--- a/drivers/serial/Kconfig
|
|
+++ b/drivers/serial/Kconfig
|
|
@@ -258,6 +258,14 @@ config SERIAL_8250_ACORN
|
|
system, say Y to this option. The driver can handle 1, 2, or 3 port
|
|
cards. If unsure, say N.
|
|
|
|
+config SERIAL_8250_RT288X
|
|
+ bool "Ralink RT288x/RT305x serial port support"
|
|
+ depends on SERIAL_8250 != n && (SOC_RT288X || SOC_RT305X)
|
|
+ help
|
|
+ If you have a Ralink RT288x/RT305x SoC based board and want to use the
|
|
+ serial port, say Y to this option. The driver can handle up to 2 serial
|
|
+ ports. If unsure, say N.
|
|
+
|
|
config SERIAL_8250_RM9K
|
|
bool "Support for MIPS RM9xxx integrated serial port"
|
|
depends on SERIAL_8250 != n && SERIAL_RM9000
|
|
--- a/include/linux/serial_core.h
|
|
+++ b/include/linux/serial_core.h
|
|
@@ -307,7 +307,7 @@ struct uart_port {
|
|
#define UPIO_HUB6 (1)
|
|
#define UPIO_MEM (2)
|
|
#define UPIO_MEM32 (3)
|
|
-#define UPIO_AU (4) /* Au1x00 type IO */
|
|
+#define UPIO_AU (4) /* Au1x00 and RT288x type IO */
|
|
#define UPIO_TSI (5) /* Tsi108/109 type IO */
|
|
#define UPIO_DWAPB (6) /* DesignWare APB UART */
|
|
#define UPIO_RM9000 (7) /* RM9000 type IO */
|