This patch changes the PPC4xx UART driver to use the NS16550 struct instead of macros for the register offsets.
Signed-off-by: Stefan Roese <[email protected]> --- arch/powerpc/cpu/ppc4xx/4xx_uart.c | 170 ++++++++++++++---------------------- 1 files changed, 66 insertions(+), 104 deletions(-) diff --git a/arch/powerpc/cpu/ppc4xx/4xx_uart.c b/arch/powerpc/cpu/ppc4xx/4xx_uart.c index e6ab570..fbfd691 100644 --- a/arch/powerpc/cpu/ppc4xx/4xx_uart.c +++ b/arch/powerpc/cpu/ppc4xx/4xx_uart.c @@ -50,6 +50,7 @@ #include <asm/io.h> #include <watchdog.h> #include <ppc4xx.h> +#include <ns16550.h> #ifdef CONFIG_SERIAL_MULTI #include <serial.h> @@ -154,31 +155,6 @@ DECLARE_GLOBAL_DATA_PTR; #error "External serial clock not supported on AMCC PPC405EP!" #endif -#define UART_RBR 0x00 -#define UART_THR 0x00 -#define UART_IER 0x01 -#define UART_IIR 0x02 -#define UART_FCR 0x02 -#define UART_LCR 0x03 -#define UART_MCR 0x04 -#define UART_LSR 0x05 -#define UART_MSR 0x06 -#define UART_SCR 0x07 -#define UART_DLL 0x00 -#define UART_DLM 0x01 - -/*-----------------------------------------------------------------------------+ - | Line Status Register. - +-----------------------------------------------------------------------------*/ -#define asyncLSRDataReady1 0x01 -#define asyncLSROverrunError1 0x02 -#define asyncLSRParityError1 0x04 -#define asyncLSRFramingError1 0x08 -#define asyncLSRBreakInterrupt1 0x10 -#define asyncLSRTxHoldEmpty1 0x20 -#define asyncLSRTxShiftEmpty1 0x40 -#define asyncLSRRxFifoError1 0x80 - #ifdef CONFIG_SERIAL_SOFTWARE_FIFO /*-----------------------------------------------------------------------------+ | Fifo @@ -192,7 +168,7 @@ typedef struct { volatile static serial_buffer_t buf_info; #endif -static void serial_init_common(u32 base, u32 udiv, u16 bdiv) +static void serial_init_common(struct NS16550 *com_port, u32 udiv, u16 bdiv) { PPC4xx_SYS_INFO sys_info; u8 val; @@ -208,16 +184,16 @@ static void serial_init_common(u32 base, u32 udiv, u16 bdiv) gd->uart_clk = sys_info.freqUART / udiv; #endif - out_8((u8 *)base + UART_LCR, 0x80); /* set DLAB bit */ - out_8((u8 *)base + UART_DLL, bdiv); /* set baudrate divisor */ - out_8((u8 *)base + UART_DLM, bdiv >> 8); /* set baudrate divisor */ - out_8((u8 *)base + UART_LCR, 0x03); /* clear DLAB; set 8 bits, no parity */ - out_8((u8 *)base + UART_FCR, 0x00); /* disable FIFO */ - out_8((u8 *)base + UART_MCR, 0x00); /* no modem control DTR RTS */ - val = in_8((u8 *)base + UART_LSR); /* clear line status */ - val = in_8((u8 *)base + UART_RBR); /* read receive buffer */ - out_8((u8 *)base + UART_SCR, 0x00); /* set scratchpad */ - out_8((u8 *)base + UART_IER, 0x00); /* set interrupt enable reg */ + out_8(&com_port->lcr, 0x80); /* set DLAB bit */ + out_8(&com_port->dll, bdiv); /* set baudrate divisor */ + out_8(&com_port->dlm, bdiv >> 8); /* set baudrate divisor */ + out_8(&com_port->lcr, 0x03); /* clear DLAB; set 8 bits, no parity */ + out_8(&com_port->fcr, 0x00); /* disable FIFO */ + out_8(&com_port->mcr, 0x00); /* no modem control DTR RTS */ + val = in_8(&com_port->lsr); /* clear line status */ + val = in_8(&com_port->rbr); /* read receive buffer */ + out_8(&com_port->scr, 0x00); /* set scratchpad */ + out_8(&com_port->ier, 0x00); /* set interrupt enable reg */ } #if (defined(CONFIG_440) || defined(CONFIG_405EX)) && \ @@ -326,7 +302,7 @@ static void serial_divs (int baudrate, unsigned long *pudiv, */ #if defined(CONFIG_440) -int serial_init_dev(unsigned long base) +int serial_init_dev(struct NS16550 *com_port) { unsigned long reg; unsigned long udiv; @@ -368,14 +344,14 @@ int serial_init_dev(unsigned long base) MTREG(UART3_SDR, reg); #endif - serial_init_common(base, udiv, bdiv); + serial_init_common(com_port, udiv, bdiv); return (0); } #else /* !defined(CONFIG_440) */ -int serial_init_dev (unsigned long base) +int serial_init_dev (struct NS16550 *com_port) { unsigned long reg; unsigned long tmp; @@ -445,42 +421,42 @@ int serial_init_dev (unsigned long base) bdiv = (clk + tmp / 2) / tmp; #endif /* CONFIG_405EX */ - serial_init_common(base, udiv, bdiv); + serial_init_common(com_port, udiv, bdiv); return (0); } #endif /* if defined(CONFIG_440) */ -void serial_setbrg_dev(unsigned long base) +void serial_setbrg_dev(struct NS16550 *com_port) { - serial_init_dev(base); + serial_init_dev(com_port); } -void serial_putc_dev(unsigned long base, const char c) +void serial_putc_dev(struct NS16550 *com_port, const char c) { int i; if (c == '\n') - serial_putc_dev(base, '\r'); + serial_putc_dev(com_port, '\r'); /* check THRE bit, wait for transmiter available */ - for (i = 1; i < 3500; i++) { - if ((in_8((u8 *)base + UART_LSR) & 0x20) == 0x20) + for (i = 0; i < 3500; i++) { + if (in_8(&com_port->lsr) & UART_LSR_THRE) break; udelay (100); } - out_8((u8 *)base + UART_THR, c); /* put character out */ + out_8(&com_port->thr, c); /* put character out */ } -void serial_puts_dev (unsigned long base, const char *s) +void serial_puts_dev (struct NS16550 *com_port, const char *s) { while (*s) - serial_putc_dev (base, *s++); + serial_putc_dev (com_port, *s++); } -int serial_getc_dev (unsigned long base) +int serial_getc_dev (struct NS16550 *com_port) { unsigned char status = 0; @@ -489,42 +465,32 @@ int serial_getc_dev (unsigned long base) WATCHDOG_RESET (); /* Reset HW Watchdog, if needed */ #endif /* CONFIG_HW_WATCHDOG */ - status = in_8((u8 *)base + UART_LSR); - if ((status & asyncLSRDataReady1) != 0x0) + status = in_8(&com_port->lsr); + if (status & UART_LSR_DR) break; - if ((status & ( asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1 )) != 0) { - out_8((u8 *)base + UART_LSR, - asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1); + if ((status & (UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI)) != 0) { + out_8(&com_port->lsr, UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI); } } - return (0x000000ff & (int) in_8((u8 *)base)); + return 0xff & in_8(&com_port->rbr); } -int serial_tstc_dev (unsigned long base) +int serial_tstc_dev (struct NS16550 *com_port) { unsigned char status; - status = in_8((u8 *)base + UART_LSR); - if ((status & asyncLSRDataReady1) != 0x0) - return (1); - - if ((status & ( asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1 )) != 0) { - out_8((u8 *)base + UART_LSR, - asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1); + status = in_8(&com_port->lsr); + if ((status & UART_LSR_DR) != 0x0) + return 1; + + if ((status & (UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI)) != 0) { + out_8(&com_port->lsr, UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI); } return 0; @@ -703,22 +669,18 @@ int getDebugChar (void) while (1) { status = in_8((u8 *)ACTING_UART1_BASE + UART_LSR); - if ((status & asyncLSRDataReady1) != 0x0) + if ((status & UART_LSR_DR) != 0x0) break; - if ((status & (asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1 )) != 0) { + if ((status & (UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI)) != 0) { out_8((u8 *)ACTING_UART1_BASE + UART_LSR, - asyncLSRFramingError1 | - asyncLSROverrunError1 | - asyncLSRParityError1 | - asyncLSRBreakInterrupt1); + UART_LSR_FE | UART_LSR_OE | + UART_LSR_PE | UART_LSR_BI); } } - return (0x000000ff & (int) in_8((u8 *)ACTING_UART1_BASE)); + return (0x000000ff & (int) in_8((u8 *)ACTING_UART1_BASE->rbr)); } void kgdb_interruptible (int yes) @@ -759,62 +721,62 @@ void kgdb_interruptible (int yes) #if defined(CONFIG_SERIAL_MULTI) int serial0_init(void) { - return (serial_init_dev(UART0_BASE)); + return serial_init_dev((struct NS16550 *)UART0_BASE); } int serial1_init(void) { - return (serial_init_dev(UART1_BASE)); + return serial_init_dev((struct NS16550 *)UART1_BASE); } void serial0_setbrg (void) { - serial_setbrg_dev(UART0_BASE); + serial_setbrg_dev((struct NS16550 *)UART0_BASE); } void serial1_setbrg (void) { - serial_setbrg_dev(UART1_BASE); + serial_setbrg_dev((struct NS16550 *)UART1_BASE); } void serial0_putc(const char c) { - serial_putc_dev(UART0_BASE,c); + serial_putc_dev((struct NS16550 *)UART0_BASE, c); } void serial1_putc(const char c) { - serial_putc_dev(UART1_BASE, c); + serial_putc_dev((struct NS16550 *)UART1_BASE, c); } void serial0_puts(const char *s) { - serial_puts_dev(UART0_BASE, s); + serial_puts_dev((struct NS16550 *)UART0_BASE, s); } void serial1_puts(const char *s) { - serial_puts_dev(UART1_BASE, s); + serial_puts_dev((struct NS16550 *)UART1_BASE, s); } int serial0_getc(void) { - return(serial_getc_dev(UART0_BASE)); + return serial_getc_dev((struct NS16550 *)UART0_BASE); } int serial1_getc(void) { - return(serial_getc_dev(UART1_BASE)); + return serial_getc_dev((struct NS16550 *)UART1_BASE); } int serial0_tstc(void) { - return (serial_tstc_dev(UART0_BASE)); + return serial_tstc_dev((struct NS16550 *)UART0_BASE); } int serial1_tstc(void) { - return (serial_tstc_dev(UART1_BASE)); + return serial_tstc_dev((struct NS16550 *)UART1_BASE); } struct serial_device serial0_device = @@ -848,32 +810,32 @@ struct serial_device serial1_device = */ int serial_init(void) { - return serial_init_dev(ACTING_UART0_BASE); + return serial_init_dev((struct NS16550 *)ACTING_UART0_BASE); } void serial_setbrg(void) { - serial_setbrg_dev(ACTING_UART0_BASE); + serial_setbrg_dev((struct NS16550 *)ACTING_UART0_BASE); } void serial_putc(const char c) { - serial_putc_dev(ACTING_UART0_BASE, c); + serial_putc_dev((struct NS16550 *)ACTING_UART0_BASE, c); } void serial_puts(const char *s) { - serial_puts_dev(ACTING_UART0_BASE, s); + serial_puts_dev((struct NS16550 *)ACTING_UART0_BASE, s); } int serial_getc(void) { - return serial_getc_dev(ACTING_UART0_BASE); + return serial_getc_dev((struct NS16550 *)ACTING_UART0_BASE); } int serial_tstc(void) { - return serial_tstc_dev(ACTING_UART0_BASE); + return serial_tstc_dev((struct NS16550 *)ACTING_UART0_BASE); } #endif /* CONFIG_SERIAL_MULTI */ -- 1.7.2.3 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
