diff options
author | Mike Westerhof <mwester@dls.net> | 2008-11-19 17:10:47 +0000 |
---|---|---|
committer | Andy Green <agreen@pads.home.warmcat.com> | 2008-11-19 17:10:47 +0000 |
commit | d1c13ff9ffcfca5288af1645a3b107aeba5f4efd (patch) | |
tree | 9a668039ef2fc8b23b537a986aca4dd752fda5b2 | |
parent | 3d40a76c45b1c0931d45b44cd52e10fb9b18f813 (diff) |
silence-serial-console-gta01.patch
This patch ensures that no console data will go the UART while
the GSM mux is switched to the GSM. This is necessary despite
the code that disables the console due to the fact that the
console resumes before the neo1973_pm_gsm driver, and consoles
always resume in the "on" state.
Signed-off-by: Mike Westerhof <mwester@dls.net>
-rw-r--r-- | arch/arm/plat-s3c24xx/neo1973_pm_gsm.c | 5 | ||||
-rw-r--r-- | drivers/serial/s3c2410.c | 10 |
2 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c index ab314b405c7..2d4fd617376 100644 --- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c +++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c @@ -30,6 +30,9 @@ #include <asm/arch/regs-gpioj.h> #endif +extern void s3c24xx_serial_console_set_silence(int silence); +extern void s3c24xx_serial_register_resume_dependency(struct resume_dependency * + resume_dependency, int uart_index); int gta_gsm_interrupts; EXPORT_SYMBOL(gta_gsm_interrupts); @@ -100,6 +103,7 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, "disconnecting serial console\n"); console_stop(gta01_gsm.con); + s3c24xx_serial_console_set_silence(1); } if (gta01_gsm.gpio_ngsm_en) @@ -139,6 +143,7 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr, s3c2410_gpio_setpin(gta01_gsm.gpio_ngsm_en, 1); if (gta01_gsm.con) { + s3c24xx_serial_console_set_silence(0); console_start(gta01_gsm.con); dev_dbg(dev, "powered down GSM, thus enabling " diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c index fef212c86d9..80c901c61c2 100644 --- a/drivers/serial/s3c2410.c +++ b/drivers/serial/s3c2410.c @@ -1716,6 +1716,13 @@ module_exit(s3c24xx_serial_modexit); #ifdef CONFIG_SERIAL_S3C2410_CONSOLE static struct uart_port *cons_uart; +static int cons_silenced; + +void s3c24xx_serial_console_set_silence(int silenced) +{ + cons_silenced = silenced; +} +EXPORT_SYMBOL(s3c24xx_serial_console_set_silence); static int s3c24xx_serial_console_txrdy(struct uart_port *port, unsigned int ufcon) @@ -1742,6 +1749,9 @@ s3c24xx_serial_console_putchar(struct uart_port *port, int ch) unsigned int ufcon = rd_regl(cons_uart, S3C2410_UFCON); unsigned int umcon = rd_regl(cons_uart, S3C2410_UMCON); + if (cons_silenced) + return; + /* If auto HW flow control enabled, temporarily turn it off */ if (umcon & S3C2410_UMCOM_AFC) wr_regl(port, S3C2410_UMCON, (umcon & !S3C2410_UMCOM_AFC)); |