diff options
| author | Hamish Guthrie <hcg@openwrt.org> | 2007-05-09 08:29:08 +0000 |
|---|---|---|
| committer | Hamish Guthrie <hcg@openwrt.org> | 2007-05-09 08:29:08 +0000 |
| commit | 91cdb3476d4327e4758d7885e9571bd31c22412f (patch) | |
| tree | e3985c6ef71f3c9b613bd03995a7f8d5b6ff2289 | |
| parent | 77a291b463848505d5cd74cab779d68361932538 (diff) | |
| download | upstream-91cdb3476d4327e4758d7885e9571bd31c22412f.tar.gz upstream-91cdb3476d4327e4758d7885e9571bd31c22412f.tar.bz2 upstream-91cdb3476d4327e4758d7885e9571bd31c22412f.zip | |
Add support for VersaLink modem control on DCE ports 0 and 3
SVN-Revision: 7144
| -rw-r--r-- | target/linux/at91-2.6/patches/008-fdl-serial.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/at91-2.6/patches/008-fdl-serial.patch b/target/linux/at91-2.6/patches/008-fdl-serial.patch new file mode 100644 index 0000000000..2260ffb6fe --- /dev/null +++ b/target/linux/at91-2.6/patches/008-fdl-serial.patch @@ -0,0 +1,71 @@ +--- linux-2.6.19.2.old/drivers/serial/atmel_serial.c 2007-05-01 13:08:03.000000000 +0200 ++++ linux-2.6.19.2/drivers/serial/atmel_serial.c 2007-05-09 10:21:45.000000000 +0200 +@@ -173,6 +173,34 @@ + at91_set_gpio_value(AT91_PIN_PA21, 0); + else + at91_set_gpio_value(AT91_PIN_PA21, 1); ++ ++ /* ++ * FDL VersaLink adds GPIOS to provide full modem control on ++ * USART 0 - Drive DTR and RI pins manually ++ */ ++ if (mctrl & TIOCM_DTR) ++ at91_set_gpio_value(AT91_PIN_PA19, 0); ++ else ++ at91_set_gpio_value(AT91_PIN_PA19, 1); ++ if (mctrl & TIOCM_RI) ++ at91_set_gpio_value(AT91_PIN_PB7, 0); ++ else ++ at91_set_gpio_value(AT91_PIN_PB7, 1); ++ } ++ ++ /* ++ * FDL VersaLink adds GPIOS to provide full modem control on ++ * USART 3 - Drive DTR and RI pins manually ++ */ ++ if (port->mapbase == AT91RM9200_BASE_US3) { ++ if (mctrl & TIOCM_DTR) ++ at91_set_gpio_value(AT91_PIN_PA24, 0); ++ else ++ at91_set_gpio_value(AT91_PIN_PA24, 1); ++ if (mctrl & TIOCM_RI) ++ at91_set_gpio_value(AT91_PIN_PB2, 0); ++ else ++ at91_set_gpio_value(AT91_PIN_PB2, 1); + } + } + #endif +@@ -210,8 +238,14 @@ + /* + * The control signals are active low. + */ +- if (!(status & ATMEL_US_DCD)) +- ret |= TIOCM_CD; ++ ++ /* ++ * Ignore DCD reister for USARTS 0 and 3 as FDL Versalink uses ++ * GPIO's for these signals ++ */ ++ if (!(port->mapbase == AT91RM9200_BASE_US0 || port->mapbase == AT91RM9200_BASE_US3)) ++ if (!(status & ATMEL_US_DCD)) ++ ret |= TIOCM_CD; + if (!(status & ATMEL_US_CTS)) + ret |= TIOCM_CTS; + if (!(status & ATMEL_US_DSR)) +@@ -219,6 +253,16 @@ + if (!(status & ATMEL_US_RI)) + ret |= TIOCM_RI; + ++ /* ++ * Read the GPIO's for the FDL VersaLink special case ++ */ ++ if (port->mapbase == AT91RM9200_BASE_US0) ++ if (!(at91_get_gpio_value(AT91_PIN_PB6))) ++ ret |= TIOCM_CD; ++ if (port->mapbase == AT91RM9200_BASE_US3) ++ if (!(at91_get_gpio_value(AT91_PIN_PB29))) ++ ret |= TIOCM_CD; ++ + return ret; + } + |