From 8c085757498281aed461979518401179d3e9942f Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 13 Sep 2012 16:48:50 +0200 Subject: serial: arm: Implement CONFIG_SERIAL_MULTI into altera_jtag serial driver Implement support for CONFIG_SERIAL_MULTI into altera_jtag serial driver. This driver was so far only usable directly, but this patch also adds support for the multi method. This allows using more than one serial driver alongside the altera_jtag driver. Also, add a weak implementation of default_serial_console() returning this driver. Signed-off-by: Marek Vasut Cc: Marek Vasut Cc: Tom Rini Cc: Thomas Chou --- drivers/serial/altera_jtag_uart.c | 73 +++++++++++++++++++++++++++++++++++---- 1 file changed, 67 insertions(+), 6 deletions(-) (limited to 'drivers/serial') diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c index 2980e4d..8cb4606 100644 --- a/drivers/serial/altera_jtag_uart.c +++ b/drivers/serial/altera_jtag_uart.c @@ -25,6 +25,8 @@ #include #include #include +#include +#include DECLARE_GLOBAL_DATA_PTR; @@ -33,10 +35,16 @@ DECLARE_GLOBAL_DATA_PTR; *-----------------------------------------------------------------*/ static nios_jtag_t *jtag = (nios_jtag_t *)CONFIG_SYS_NIOS_CONSOLE; -void serial_setbrg( void ){ return; } -int serial_init( void ) { return(0);} +static void altera_jtag_serial_setbrg(void) +{ +} + +static int altera_jtag_serial_init(void) +{ + return 0; +} -void serial_putc (char c) +static void altera_jtag_serial_putc(char c) { while (1) { unsigned st = readl(&jtag->control); @@ -51,18 +59,18 @@ void serial_putc (char c) writel ((unsigned char)c, &jtag->data); } -void serial_puts (const char *s) +static void altera_jtag_serial_puts(const char *s) { while (*s != 0) serial_putc (*s++); } -int serial_tstc (void) +static int altera_jtag_serial_tstc(void) { return ( readl (&jtag->control) & NIOS_JTAG_RRDY); } -int serial_getc (void) +static int altera_jtag_serial_getc(void) { int c; unsigned val; @@ -76,3 +84,56 @@ int serial_getc (void) c = val & 0x0ff; return (c); } + +#ifdef CONFIG_SERIAL_MULTI +static struct serial_device altera_jtag_serial_drv = { + .name = "altera_jtag_uart", + .start = altera_jtag_serial_init, + .stop = NULL, + .setbrg = altera_jtag_serial_setbrg, + .putc = altera_jtag_serial_putc, + .puts = altera_jtag_serial_puts, + .getc = altera_jtag_serial_getc, + .tstc = altera_jtag_serial_tstc, +}; + +void altera_jtag_serial_initialize(void) +{ + serial_register(&altera_jtag_serial_drv); +} + +__weak struct serial_device *default_serial_console(void) +{ + return &altera_jtag_serial_drv; +} +#else +int serial_init(void) +{ + return altera_jtag_serial_init(); +} + +void serial_setbrg(void) +{ + altera_jtag_serial_setbrg(); +} + +void serial_putc(const char c) +{ + altera_jtag_serial_putc(c); +} + +void serial_puts(const char *s) +{ + altera_jtag_serial_puts(s); +} + +int serial_getc(void) +{ + return altera_jtag_serial_getc(); +} + +int serial_tstc(void) +{ + return altera_jtag_serial_tstc(); +} +#endif -- cgit v1.1