diff options
Diffstat (limited to 'cpu/pxa')
| -rw-r--r-- | cpu/pxa/serial.c | 351 |
1 files changed, 269 insertions, 82 deletions
diff --git a/cpu/pxa/serial.c b/cpu/pxa/serial.c index cb3a478..51e7f65 100644 --- a/cpu/pxa/serial.c +++ b/cpu/pxa/serial.c @@ -30,11 +30,28 @@ #include <common.h> #include <watchdog.h> +#include <serial.h> #include <asm/arch/pxa-regs.h> DECLARE_GLOBAL_DATA_PTR; -void serial_setbrg (void) +#define FFUART 0 +#define BTUART 1 +#define STUART 2 + +#ifndef CONFIG_SERIAL_MULTI +#if defined (CONFIG_FFUART) +#define UART_INDEX FFUART +#elif defined (CONFIG_BTUART) +#define UART_INDEX BTUART +#elif defined (CONFIG_STUART) +#define UART_INDEX STUART +#else +#error "Bad: you didn't configure serial ..." +#endif +#endif + +void pxa_setbrg_dev (unsigned int uart_index) { unsigned int quot = 0; @@ -53,63 +70,68 @@ void serial_setbrg (void) else hang (); -#ifdef CONFIG_FFUART + switch (uart_index) { + case FFUART: #ifdef CONFIG_CPU_MONAHANS - CKENA |= CKENA_22_FFUART; + CKENA |= CKENA_22_FFUART; #else - CKEN |= CKEN6_FFUART; + CKEN |= CKEN6_FFUART; #endif /* CONFIG_CPU_MONAHANS */ - FFIER = 0; /* Disable for now */ - FFFCR = 0; /* No fifos enabled */ + FFIER = 0; /* Disable for now */ + FFFCR = 0; /* No fifos enabled */ - /* set baud rate */ - FFLCR = LCR_WLS0 | LCR_WLS1 | LCR_DLAB; - FFDLL = quot & 0xff; - FFDLH = quot >> 8; - FFLCR = LCR_WLS0 | LCR_WLS1; + /* set baud rate */ + FFLCR = LCR_WLS0 | LCR_WLS1 | LCR_DLAB; + FFDLL = quot & 0xff; + FFDLH = quot >> 8; + FFLCR = LCR_WLS0 | LCR_WLS1; - FFIER = IER_UUE; /* Enable FFUART */ + FFIER = IER_UUE; /* Enable FFUART */ + break; -#elif defined(CONFIG_BTUART) + case BTUART: #ifdef CONFIG_CPU_MONAHANS - CKENA |= CKENA_21_BTUART; + CKENA |= CKENA_21_BTUART; #else - CKEN |= CKEN7_BTUART; + CKEN |= CKEN7_BTUART; #endif /* CONFIG_CPU_MONAHANS */ - BTIER = 0; - BTFCR = 0; + BTIER = 0; + BTFCR = 0; - /* set baud rate */ - BTLCR = LCR_DLAB; - BTDLL = quot & 0xff; - BTDLH = quot >> 8; - BTLCR = LCR_WLS0 | LCR_WLS1; + /* set baud rate */ + BTLCR = LCR_DLAB; + BTDLL = quot & 0xff; + BTDLH = quot >> 8; + BTLCR = LCR_WLS0 | LCR_WLS1; - BTIER = IER_UUE; /* Enable BFUART */ + BTIER = IER_UUE; /* Enable BFUART */ -#elif defined(CONFIG_STUART) + break; + + case STUART: #ifdef CONFIG_CPU_MONAHANS - CKENA |= CKENA_23_STUART; + CKENA |= CKENA_23_STUART; #else - CKEN |= CKEN5_STUART; + CKEN |= CKEN5_STUART; #endif /* CONFIG_CPU_MONAHANS */ - STIER = 0; - STFCR = 0; + STIER = 0; + STFCR = 0; - /* set baud rate */ - STLCR = LCR_DLAB; - STDLL = quot & 0xff; - STDLH = quot >> 8; - STLCR = LCR_WLS0 | LCR_WLS1; + /* set baud rate */ + STLCR = LCR_DLAB; + STDLL = quot & 0xff; + STDLH = quot >> 8; + STLCR = LCR_WLS0 | LCR_WLS1; - STIER = IER_UUE; /* Enable STUART */ + STIER = IER_UUE; /* Enable STUART */ + break; -#else -#error "Bad: you didn't configure serial ..." -#endif + default: + hang(); + } } @@ -118,9 +140,9 @@ void serial_setbrg (void) * are always 8 data bits, no parity, 1 stop bit, no start bits. * */ -int serial_init (void) +int pxa_init_dev (unsigned int uart_index) { - serial_setbrg (); + pxa_setbrg_dev (uart_index); return (0); } @@ -129,26 +151,32 @@ int serial_init (void) /* * Output a single byte to the serial port. */ -void serial_putc (const char c) -{ -#ifdef CONFIG_FFUART - /* wait for room in the tx FIFO on FFUART */ - while ((FFLSR & LSR_TEMT) == 0) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - FFTHR = c; -#elif defined(CONFIG_BTUART) - while ((BTLSR & LSR_TEMT ) == 0 ) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - BTTHR = c; -#elif defined(CONFIG_STUART) - while ((STLSR & LSR_TEMT ) == 0 ) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - STTHR = c; -#endif +void pxa_putc_dev (unsigned int uart_index,const char c) +{ + switch (uart_index) { + case FFUART: + /* wait for room in the tx FIFO on FFUART */ + while ((FFLSR & LSR_TEMT) == 0) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + FFTHR = c; + break; + + case BTUART: + while ((BTLSR & LSR_TEMT ) == 0 ) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + BTTHR = c; + break; + + case STUART: + while ((STLSR & LSR_TEMT ) == 0 ) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + STTHR = c; + break; + } /* If \n, also do \r */ if (c == '\n') - serial_putc ('\r'); + pxa_putc_dev (uart_index,'\r'); } /* @@ -156,15 +184,17 @@ void serial_putc (const char c) * otherwise. When the function is succesfull, the character read is * written into its argument c. */ -int serial_tstc (void) -{ -#ifdef CONFIG_FFUART - return FFLSR & LSR_DR; -#elif defined(CONFIG_BTUART) - return BTLSR & LSR_DR; -#elif defined(CONFIG_STUART) - return STLSR & LSR_DR; -#endif +int pxa_tstc_dev (unsigned int uart_index) +{ + switch (uart_index) { + case FFUART: + return FFLSR & LSR_DR; + case BTUART: + return BTLSR & LSR_DR; + case STUART: + return STLSR & LSR_DR; + } + return -1; } /* @@ -172,27 +202,184 @@ int serial_tstc (void) * otherwise. When the function is succesfull, the character read is * written into its argument c. */ -int serial_getc (void) -{ -#ifdef CONFIG_FFUART - while (!(FFLSR & LSR_DR)) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - return (char) FFRBR & 0xff; -#elif defined(CONFIG_BTUART) - while (!(BTLSR & LSR_DR)) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - return (char) BTRBR & 0xff; -#elif defined(CONFIG_STUART) - while (!(STLSR & LSR_DR)) - WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ - return (char) STRBR & 0xff; -#endif +int pxa_getc_dev (unsigned int uart_index) +{ + switch (uart_index) { + case FFUART: + while (!(FFLSR & LSR_DR)) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + return (char) FFRBR & 0xff; + + case BTUART: + while (!(BTLSR & LSR_DR)) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + return (char) BTRBR & 0xff; + case STUART: + while (!(STLSR & LSR_DR)) + WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ + return (char) STRBR & 0xff; + } + return -1; } void -serial_puts (const char *s) +pxa_puts_dev (unsigned int uart_index,const char *s) { while (*s) { - serial_putc (*s++); + pxa_putc_dev (uart_index,*s++); } } + +#if defined (CONFIG_FFUART) +static int ffuart_init(void) +{ + return pxa_init_dev(FFUART); +} + +static void ffuart_setbrg(void) +{ + return pxa_setbrg_dev(FFUART); +} + +static void ffuart_putc(const char c) +{ + return pxa_putc_dev(FFUART,c); +} + +static void ffuart_puts(const char *s) +{ + return pxa_puts_dev(FFUART,s); +} + +static int ffuart_getc(void) +{ + return pxa_getc_dev(FFUART); +} + +static int ffuart_tstc(void) +{ + return pxa_tstc_dev(FFUART); +} + +struct serial_device serial_ffuart_device = +{ + "serial_ffuart", + "PXA", + ffuart_init, + ffuart_setbrg, + ffuart_getc, + ffuart_tstc, + ffuart_putc, + ffuart_puts, +}; +#endif + +#if defined (CONFIG_BTUART) +static int btuart_init(void) +{ + return pxa_init_dev(BTUART); +} + +static void btuart_setbrg(void) +{ + return pxa_setbrg_dev(BTUART); +} + +static void btuart_putc(const char c) +{ + return pxa_putc_dev(BTUART,c); +} + +static void btuart_puts(const char *s) +{ + return pxa_puts_dev(BTUART,s); +} + +static int btuart_getc(void) +{ + return pxa_getc_dev(BTUART); +} + +static int btuart_tstc(void) +{ + return pxa_tstc_dev(BTUART); +} + +struct serial_device serial_btuart_device = +{ + "serial_btuart", + "PXA", + btuart_init, + btuart_setbrg, + btuart_getc, + btuart_tstc, + btuart_putc, + btuart_puts, +}; +#endif + +#if defined (CONFIG_STUART) +static int stuart_init(void) +{ + return pxa_init_dev(STUART); +} + +static void stuart_setbrg(void) +{ + return pxa_setbrg_dev(STUART); +} + +static void stuart_putc(const char c) +{ + return pxa_putc_dev(STUART,c); +} + +static void stuart_puts(const char *s) +{ + return pxa_puts_dev(STUART,s); +} + +static int stuart_getc(void) +{ + return pxa_getc_dev(STUART); +} + +static int stuart_tstc(void) +{ + return pxa_tstc_dev(STUART); +} + +struct serial_device serial_stuart_device = +{ + "serial_stuart", + "PXA", + stuart_init, + stuart_setbrg, + stuart_getc, + stuart_tstc, + stuart_putc, + stuart_puts, +}; +#endif + + +#ifndef CONFIG_SERIAL_MULTI +inline int serial_init(void) { + return (pxa_init_dev(UART_INDEX)); +} +void serial_setbrg(void) { + pxa_setbrg_dev(UART_INDEX); +} +int serial_getc(void) { + return(pxa_getc_dev(UART_INDEX)); +} +int serial_tstc(void) { + return(pxa_tstc_dev(UART_INDEX)); +} +void serial_putc(const char c) { + pxa_putc_dev(UART_INDEX,c); +} +void serial_puts(const char *s) { + pxa_puts_dev(UART_INDEX,s); +} +#endif /* CONFIG_SERIAL_MULTI */ |