mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-25 00:57:31 +02:00
119 lines
4.0 KiB
Diff
119 lines
4.0 KiB
Diff
|
--- a/drivers/serial/8250.c
|
||
|
|
+++ b/drivers/serial/8250.c
|
||
|
|
@@ -289,9 +289,9 @@ static const struct serial8250_config ua
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
-#if defined (CONFIG_SERIAL_8250_AU1X00)
|
||
|
|
+#if defined (CONFIG_SERIAL_8250_AU1X00) || 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,
|
||
|
|
@@ -409,7 +409,7 @@ static unsigned int mem32_serial_in(stru
|
||
|
|
return readl(p->membase + offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
-#ifdef CONFIG_SERIAL_8250_AU1X00
|
||
|
|
+#if defined(CONFIG_SERIAL_8250_AU1X00) || defined(CONFIG_SERIAL_8250_RT288X)
|
||
|
|
static unsigned int au_serial_in(struct uart_port *p, int offset)
|
||
|
|
{
|
||
|
|
offset = map_8250_in_reg(p, offset) << p->regshift;
|
||
|
|
@@ -490,7 +490,7 @@ static void set_io_from_upio(struct uart
|
||
|
|
p->serial_out = mem32_serial_out;
|
||
|
|
break;
|
||
|
|
|
||
|
|
-#ifdef CONFIG_SERIAL_8250_AU1X00
|
||
|
|
+#if defined (CONFIG_SERIAL_8250_AU1X00) || defined (CONFIG_SERIAL_8250_RT288X)
|
||
|
|
case UPIO_AU:
|
||
|
|
p->serial_in = au_serial_in;
|
||
|
|
p->serial_out = au_serial_out;
|
||
|
|
@@ -522,7 +522,7 @@ serial_out_sync(struct uart_8250_port *u
|
||
|
|
switch (p->iotype) {
|
||
|
|
case UPIO_MEM:
|
||
|
|
case UPIO_MEM32:
|
||
|
|
-#ifdef CONFIG_SERIAL_8250_AU1X00
|
||
|
|
+#if defined (CONFIG_SERIAL_8250_AU1X00) || defined (CONFIG_SERIAL_8250_RT288X)
|
||
|
|
case UPIO_AU:
|
||
|
|
#endif
|
||
|
|
case UPIO_DWAPB:
|
||
|
|
@@ -560,8 +560,8 @@ static inline void _serial_dl_write(stru
|
||
|
|
serial_outp(up, UART_DLM, value >> 8 & 0xff);
|
||
|
|
}
|
||
|
|
|
||
|
|
-#if defined(CONFIG_SERIAL_8250_AU1X00)
|
||
|
|
-/* Au1x00 haven't got a standard divisor latch */
|
||
|
|
+#if defined (CONFIG_SERIAL_8250_AU1X00) || 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)
|
||
|
|
@@ -768,22 +768,19 @@ 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;
|
||
|
|
@@ -1205,7 +1202,7 @@ static void autoconfig(struct uart_8250_
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
-#ifdef CONFIG_SERIAL_8250_AU1X00
|
||
|
|
+#if defined (CONFIG_SERIAL_8250_AU1X00) || defined (CONFIG_SERIAL_8250_RT288X)
|
||
|
|
/* if access method is AU, it is a 16550 with a quirk */
|
||
|
|
if (up->port.type == PORT_16550A && up->port.iotype == UPIO_AU)
|
||
|
|
up->bugs |= UART_BUG_NOMSR;
|
||
|
|
--- a/drivers/serial/Kconfig
|
||
|
|
+++ b/drivers/serial/Kconfig
|
||
|
|
@@ -266,6 +266,14 @@ config SERIAL_8250_AU1X00
|
||
|
|
say Y to this option. The driver can handle up to 4 serial ports,
|
||
|
|
depending on the SOC. 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
|
||
|
|
@@ -269,7 +269,7 @@ 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 */
|