diff options
| -rw-r--r-- | common/serial.c | 2 | ||||
| -rw-r--r-- | drivers/serial/lpc32xx_hsuart.c | 71 |
2 files changed, 50 insertions, 23 deletions
diff --git a/common/serial.c b/common/serial.c index 7b20306..b065a99 100644 --- a/common/serial.c +++ b/common/serial.c @@ -73,6 +73,7 @@ serial_initfunc(p3mx_serial_initialize); serial_initfunc(altera_jtag_serial_initialize); serial_initfunc(altera_serial_initialize); serial_initfunc(atmel_serial_initialize); +serial_initfunc(lpc32xx_serial_initialize); void serial_register(struct serial_device *dev) { @@ -124,6 +125,7 @@ void serial_initialize(void) altera_jtag_serial_initialize(); altera_serial_initialize(); atmel_serial_initialize(); + lpc32xx_serial_initialize(); serial_assign(default_serial_console()->name); } diff --git a/drivers/serial/lpc32xx_hsuart.c b/drivers/serial/lpc32xx_hsuart.c index 8ce3382..536fd46 100644 --- a/drivers/serial/lpc32xx_hsuart.c +++ b/drivers/serial/lpc32xx_hsuart.c @@ -22,12 +22,14 @@ #include <asm/arch/clk.h> #include <asm/arch/uart.h> #include <asm/io.h> +#include <serial.h> +#include <linux/compiler.h> DECLARE_GLOBAL_DATA_PTR; static struct hsuart_regs *hsuart = (struct hsuart_regs *)HS_UART_BASE; -static void lpc32xx_hsuart_set_baudrate(void) +static void lpc32xx_serial_setbrg(void) { u32 div; @@ -39,7 +41,7 @@ static void lpc32xx_hsuart_set_baudrate(void) writel(div, &hsuart->rate); } -static int lpc32xx_hsuart_getc(void) +static int lpc32xx_serial_getc(void) { while (!(readl(&hsuart->level) & HSUART_LEVEL_RX)) /* NOP */; @@ -47,7 +49,7 @@ static int lpc32xx_hsuart_getc(void) return readl(&hsuart->rx) & HSUART_RX_DATA; } -static void lpc32xx_hsuart_putc(const char c) +static void lpc32xx_serial_putc(const char c) { writel(c, &hsuart->tx); @@ -56,7 +58,7 @@ static void lpc32xx_hsuart_putc(const char c) /* NOP */; } -static int lpc32xx_hsuart_tstc(void) +static int lpc32xx_serial_tstc(void) { if (readl(&hsuart->level) & HSUART_LEVEL_RX) return 1; @@ -64,49 +66,72 @@ static int lpc32xx_hsuart_tstc(void) return 0; } -static void lpc32xx_hsuart_init(void) +static int lpc32xx_serial_init(void) { - lpc32xx_hsuart_set_baudrate(); + lpc32xx_serial_setbrg(); /* Disable hardware RTS and CTS flow control, set up RX and TX FIFO */ writel(HSUART_CTRL_TMO_16 | HSUART_CTRL_HSU_OFFSET(20) | HSUART_CTRL_HSU_RX_TRIG_32 | HSUART_CTRL_HSU_TX_TRIG_0, &hsuart->ctrl); + return 0; } -void serial_setbrg(void) +static void lpc32xx_serial_puts(const char *s) { - return lpc32xx_hsuart_set_baudrate(); + while (*s) + serial_putc(*s++); } -void serial_putc(const char c) +#ifdef CONFIG_SERIAL_MULTI +static struct serial_device lpc32xx_serial_drv = { + .name = "lpc32xx_serial", + .start = lpc32xx_serial_init, + .stop = NULL, + .setbrg = lpc32xx_serial_setbrg, + .putc = lpc32xx_serial_putc, + .puts = lpc32xx_serial_puts, + .getc = lpc32xx_serial_getc, + .tstc = lpc32xx_serial_tstc, +}; + +void lpc32xx_serial_initialize(void) { - lpc32xx_hsuart_putc(c); + serial_register(&lpc32xx_serial_drv); +} - /* If \n, also do \r */ - if (c == '\n') - lpc32xx_hsuart_putc('\r'); +__weak struct serial_device *default_serial_console(void) +{ + return &lpc32xx_serial_drv; +} +#else +int serial_init(void) +{ + return lpc32xx_serial_init(); } -int serial_getc(void) +void serial_setbrg(void) { - return lpc32xx_hsuart_getc(); + lpc32xx_serial_setbrg(); } -void serial_puts(const char *s) +void serial_putc(const char c) { - while (*s) - serial_putc(*s++); + lpc32xx_serial_putc(c); } -int serial_tstc(void) +void serial_puts(const char *s) { - return lpc32xx_hsuart_tstc(); + lpc32xx_serial_puts(s); } -int serial_init(void) +int serial_getc(void) { - lpc32xx_hsuart_init(); + return lpc32xx_serial_getc(); +} - return 0; +int serial_tstc(void) +{ + return lpc32xx_serial_tstc(); } +#endif |