diff options
author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2011-03-27 19:20:04 +0000 |
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committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2011-03-27 19:20:04 +0000 |
commit | a406ef4fe75dc93b1b52e9e8c7b02b5c7ba88577 (patch) | |
tree | 1205b8898e00e44b486380c6be8b14644c6c88e1 /target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch | |
parent | 3caf3c48cf0c3ef99654636a50e0e3c993d7b052 (diff) |
ramips: switch to 2.6.37
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26328 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch')
-rw-r--r-- | target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch b/target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch new file mode 100644 index 000000000..441f98385 --- /dev/null +++ b/target/linux/ramips/patches-2.6.37/101-rt288x_serial_driver_hack.patch @@ -0,0 +1,82 @@ +--- 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 */ |