From 2063a54e1487a933b406b5413f4fa3774fd31c91 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Thu, 13 Sep 2012 01:29:31 +0200 Subject: serial: powerpc: Implement CONFIG_SERIAL_MULTI into mpc8220 serial driver Implement support for CONFIG_SERIAL_MULTI into mpc8220 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 mpc8220 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: Anatolij Gustschin Cc: Stefan Roese --- arch/powerpc/cpu/mpc8220/uart.c | 67 +++++++++++++++++++++++++++++++++++++---- 1 file changed, 61 insertions(+), 6 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/cpu/mpc8220/uart.c b/arch/powerpc/cpu/mpc8220/uart.c index 0c4b536..545c81a 100644 --- a/arch/powerpc/cpu/mpc8220/uart.c +++ b/arch/powerpc/cpu/mpc8220/uart.c @@ -29,13 +29,15 @@ #include #include +#include +#include DECLARE_GLOBAL_DATA_PTR; #define PSC_BASE MMAP_PSC1 #if defined(CONFIG_PSC_CONSOLE) -int serial_init (void) +static int mpc8220_serial_init(void) { volatile psc8220_t *psc = (psc8220_t *) PSC_BASE; u32 counter; @@ -69,7 +71,7 @@ int serial_init (void) return (0); } -void serial_putc (const char c) +static void mpc8220_serial_putc(const char c) { volatile psc8220_t *psc = (psc8220_t *) PSC_BASE; @@ -82,14 +84,14 @@ void serial_putc (const char c) psc->xmitbuf[0] = c; } -void serial_puts (const char *s) +static void mpc8220_serial_puts(const char *s) { while (*s) { serial_putc (*s++); } } -int serial_getc (void) +static int mpc8220_serial_getc(void) { volatile psc8220_t *psc = (psc8220_t *) PSC_BASE; @@ -98,14 +100,14 @@ int serial_getc (void) return psc->xmitbuf[2]; } -int serial_tstc (void) +static int mpc8220_serial_tstc(void) { volatile psc8220_t *psc = (psc8220_t *) PSC_BASE; return (psc->sr_csr & PSC_SR_RXRDY); } -void serial_setbrg (void) +static void mpc8220_serial_setbrg(void) { volatile psc8220_t *psc = (psc8220_t *) PSC_BASE; u32 counter; @@ -123,4 +125,57 @@ void serial_setbrg (void) psc->cr = PSC_CR_RX_ENABLE | PSC_CR_TX_ENABLE; } + +#ifdef CONFIG_SERIAL_MULTI +static struct serial_device mpc8220_serial_drv = { + .name = "mpc8220_serial", + .start = mpc8220_serial_init, + .stop = NULL, + .setbrg = mpc8220_serial_setbrg, + .putc = mpc8220_serial_putc, + .puts = mpc8220_serial_puts, + .getc = mpc8220_serial_getc, + .tstc = mpc8220_serial_tstc, +}; + +void mpc8220_serial_initialize(void) +{ + serial_register(&mpc8220_serial_drv); +} + +__weak struct serial_device *default_serial_console(void) +{ + return &mpc8220_serial_drv; +} +#else +int serial_init(void) +{ + return mpc8220_serial_init(); +} + +void serial_setbrg(void) +{ + mpc8220_serial_setbrg(); +} + +void serial_putc(const char c) +{ + mpc8220_serial_putc(c); +} + +void serial_puts(const char *s) +{ + mpc8220_serial_puts(s); +} + +int serial_getc(void) +{ + return mpc8220_serial_getc(); +} + +int serial_tstc(void) +{ + return mpc8220_serial_tstc(); +} +#endif #endif /* CONFIG_PSC_CONSOLE */ -- cgit v1.1