[U-Boot] [PATCH 39/71] serial: arm: Implement CONFIG_SERIAL_MULTI into altera_jtag serial driver

[Thomas Chou]

On 09/17/2012 07:21 AM, Marek Vasut wrote:
> 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 <marex at denx.de>
> Cc: Marek Vasut <marek.vasut at gmail.com>
> Cc: Tom Rini <trini at ti.com>
> Cc: Thomas Chou <thomas at wytron.com.tw>
> ---
>   common/serial.c                   |    2 ++
>   drivers/serial/altera_jtag_uart.c |   71 +++++++++++++++++++++++++++++++++----
>   2 files changed, 67 insertions(+), 6 deletions(-)


Dear Marek,

Please include the following headers.

--- a/drivers/serial/altera_jtag_uart.c
+++ b/drivers/serial/altera_jtag_uart.c
@@ -25,6 +25,8 @@
  #include <watchdog.h>
  #include <asm/io.h>
  #include <nios2-io.h>
+#include <linux/compiler.h>
+#include <serial.h>

  DECLARE_GLOBAL_DATA_PTR;

And the .name string is too long. >16

static struct serial_device altera_jtag_serial_drv = {
	.name	= "altera_jtag_serial",

Otherwise,
Acked-by: Thomas Chou <thomas at wytron.com.tw>

Best regards,
Thomas Chou




>
> diff --git a/common/serial.c b/common/serial.c
> index 2d6ba05..24879ec 100644
> --- a/common/serial.c
> +++ b/common/serial.c
> @@ -69,6 +69,7 @@ serial_initfunc(evb64260_serial_initialize);
>   serial_initfunc(ml2_serial_initialize);
>   serial_initfunc(sconsole_serial_initialize);
>   serial_initfunc(p3mx_serial_initialize);
> +serial_initfunc(altera_jtag_serial_initialize);
>
>   void serial_register(struct serial_device *dev)
>   {
> @@ -116,6 +117,7 @@ void serial_initialize(void)
>   	ml2_serial_initialize();
>   	sconsole_serial_initialize();
>   	p3mx_serial_initialize();
> +	altera_jtag_serial_initialize();
>
>   	serial_assign(default_serial_console()->name);
>   }
> diff --git a/drivers/serial/altera_jtag_uart.c b/drivers/serial/altera_jtag_uart.c
> index 2980e4d..d3b6c1c 100644
> --- a/drivers/serial/altera_jtag_uart.c
> +++ b/drivers/serial/altera_jtag_uart.c
> @@ -33,10 +33,16 @@ 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 +57,18 @@ 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 +82,56 @@ int serial_getc (void)
>   	c = val & 0x0ff;
>   	return (c);
>   }
> +
> +#ifdef CONFIG_SERIAL_MULTI
> +static struct serial_device altera_jtag_serial_drv = {
> +	.name	= "altera_jtag_serial",
> +	.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
>