diff options
Diffstat (limited to 'drivers/serial/serial_s3c24x0.c')
| -rw-r--r-- | drivers/serial/serial_s3c24x0.c | 160 |
1 files changed, 91 insertions, 69 deletions
diff --git a/drivers/serial/serial_s3c24x0.c b/drivers/serial/serial_s3c24x0.c index 6d69c43ed5..c2c72e456f 100644 --- a/drivers/serial/serial_s3c24x0.c +++ b/drivers/serial/serial_s3c24x0.c @@ -38,7 +38,7 @@ DECLARE_GLOBAL_DATA_PTR; #elif defined(CONFIG_SERIAL3) # if defined(CONFIG_TRAB) -# #error "TRAB supports only CONFIG_SERIAL1" +# error "TRAB supports only CONFIG_SERIAL1" # endif #define UART_NR S3C24X0_UART2 @@ -46,51 +46,71 @@ DECLARE_GLOBAL_DATA_PTR; #error "Bad: you didn't configure serial ..." #endif +#include <asm/io.h> + #if defined(CONFIG_SERIAL_MULTI) #include <serial.h> /* Multi serial device functions */ #define DECLARE_S3C_SERIAL_FUNCTIONS(port) \ - int s3serial##port##_init (void) {\ - return serial_init_dev(port);}\ - void s3serial##port##_setbrg (void) {\ - serial_setbrg_dev(port);}\ - int s3serial##port##_getc (void) {\ - return serial_getc_dev(port);}\ - int s3serial##port##_tstc (void) {\ - return serial_tstc_dev(port);}\ - void s3serial##port##_putc (const char c) {\ - serial_putc_dev(port, c);}\ - void s3serial##port##_puts (const char *s) {\ - serial_puts_dev(port, s);} - -#define INIT_S3C_SERIAL_STRUCTURE(port,name,bus) {\ - name,\ - bus,\ - s3serial##port##_init,\ - s3serial##port##_setbrg,\ - s3serial##port##_getc,\ - s3serial##port##_tstc,\ - s3serial##port##_putc,\ - s3serial##port##_puts, } + int s3serial##port##_init(void) \ + { \ + return serial_init_dev(port); \ + } \ + void s3serial##port##_setbrg(void) \ + { \ + serial_setbrg_dev(port); \ + } \ + int s3serial##port##_getc(void) \ + { \ + return serial_getc_dev(port); \ + } \ + int s3serial##port##_tstc(void) \ + { \ + return serial_tstc_dev(port); \ + } \ + void s3serial##port##_putc(const char c) \ + { \ + serial_putc_dev(port, c); \ + } \ + void s3serial##port##_puts(const char *s) \ + { \ + serial_puts_dev(port, s); \ + } + +#define INIT_S3C_SERIAL_STRUCTURE(port, name, bus) { \ + name, \ + bus, \ + s3serial##port##_init, \ + s3serial##port##_setbrg, \ + s3serial##port##_getc, \ + s3serial##port##_tstc, \ + s3serial##port##_putc, \ + s3serial##port##_puts, \ +} #endif /* CONFIG_SERIAL_MULTI */ +#ifdef CONFIG_HWFLOW +static int hwflow; +#endif + void _serial_setbrg(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); unsigned int reg = 0; int i; /* value is calculated so : (int)(PCLK/16./baudrate) -1 */ reg = get_PCLK() / (16 * gd->baudrate) - 1; - uart->UBRDIV = reg; - for (i = 0; i < 100; i++); + writel(reg, &uart->UBRDIV); + for (i = 0; i < 100; i++) + /* Delay */ ; } + #if defined(CONFIG_SERIAL_MULTI) -static inline void -serial_setbrg_dev(unsigned int dev_index) +static inline void serial_setbrg_dev(unsigned int dev_index) { _serial_setbrg(dev_index); } @@ -107,29 +127,33 @@ void serial_setbrg(void) */ static int serial_init_dev(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); + +#ifdef CONFIG_HWFLOW + hwflow = 0; /* turned off by default */ +#endif /* FIFO enable, Tx/Rx FIFO clear */ - uart->UFCON = 0x07; - uart->UMCON = 0x0; + writel(0x07, &uart->UFCON); + writel(0x0, &uart->UMCON); /* Normal,No parity,1 stop,8 bit */ - uart->ULCON = 0x3; + writel(0x3, &uart->ULCON); /* * tx=level,rx=edge,disable timeout int.,enable rx error int., * normal,interrupt or polling */ - uart->UCON = 0x245; + writel(0x245, &uart->UCON); #ifdef CONFIG_HWFLOW - uart->UMCON = 0x1; /* RTS up */ + writel(0x1, &uart->UMCON); /* RTS up */ #endif /* FIXME: This is sooooooooooooooooooo ugly */ #if defined(CONFIG_ARCH_GTA02_v1) || defined(CONFIG_ARCH_GTA02_v2) /* we need auto hw flow control on the gsm and gps port */ if (dev_index == 0 || dev_index == 1) - uart->UMCON = 0x10; + writel(0x10, &uart->UMCON); #endif _serial_setbrg(dev_index); @@ -140,7 +164,7 @@ static int serial_init_dev(const int dev_index) /* Initialise the serial port. The settings are always 8 data bits, no parity, * 1 stop bit, no start bits. */ -int serial_init (void) +int serial_init(void) { return serial_init_dev(UART_NR); } @@ -151,40 +175,40 @@ int serial_init (void) * otherwise. When the function is succesfull, the character read is * written into its argument c. */ -int _serial_getc (const int dev_index) +int _serial_getc(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - /* wait for character to arrive */ - while (!(uart->UTRSTAT & 0x1)); + while (!(readl(&uart->UTRSTAT) & 0x1)) + /* wait for character to arrive */ ; - return uart->URXH & 0xff; + return readb(&uart->URXH) & 0xff; } + #if defined(CONFIG_SERIAL_MULTI) static inline int serial_getc_dev(unsigned int dev_index) { return _serial_getc(dev_index); } #else -int serial_getc (void) +int serial_getc(void) { return _serial_getc(UART_NR); } #endif #ifdef CONFIG_HWFLOW -static int hwflow = 0; /* turned off by default */ int hwflow_onoff(int on) { - switch(on) { + switch (on) { case 0: default: - break; /* return current */ + break; /* return current */ case 1: - hwflow = 1; /* turn on */ + hwflow = 1; /* turn on */ break; case -1: - hwflow = 0; /* turn off */ + hwflow = 0; /* turn off */ break; } return hwflow; @@ -208,29 +232,29 @@ void enable_putc(void) /* * Output a single byte to the serial port. */ -void _serial_putc (const char c, const int dev_index) +void _serial_putc(const char c, const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); #ifdef CONFIG_MODEM_SUPPORT if (be_quiet) return; #endif - /* wait for room in the tx FIFO */ - while (!(uart->UTRSTAT & 0x2)); + while (!(readl(&uart->UTRSTAT) & 0x2)) + /* wait for room in the tx FIFO */ ; #ifdef CONFIG_HWFLOW - /* Wait for CTS up */ - while(hwflow && !(uart->UMSTAT & 0x1)) - ; + while (hwflow && !(readl(&uart->UMSTAT) & 0x1)) + /* Wait for CTS up */ ; #endif - uart->UTXH = c; + writeb(c, &uart->UTXH); /* If \n, also do \r */ if (c == '\n') - serial_putc ('\r'); + serial_putc('\r'); } + #if defined(CONFIG_SERIAL_MULTI) static inline void serial_putc_dev(unsigned int dev_index, const char c) { @@ -249,13 +273,13 @@ void serial_putc(const char c) */ int _serial_tstc(const int dev_index) { - S3C24X0_UART * const uart = S3C24X0_GetBase_UART(dev_index); + struct s3c24x0_uart *uart = s3c24x0_get_base_uart(dev_index); - return uart->UTRSTAT & 0x1; + return readl(&uart->UTRSTAT) & 0x1; } + #if defined(CONFIG_SERIAL_MULTI) -static inline int -serial_tstc_dev(unsigned int dev_index) +static inline int serial_tstc_dev(unsigned int dev_index) { return _serial_tstc(dev_index); } @@ -269,18 +293,17 @@ int serial_tstc(void) void _serial_puts(const char *s, const int dev_index) { while (*s) { - _serial_putc (*s++, dev_index); + _serial_putc(*s++, dev_index); } } + #if defined(CONFIG_SERIAL_MULTI) -static inline void -serial_puts_dev(int dev_index, const char *s) +static inline void serial_puts_dev(int dev_index, const char *s) { _serial_puts(s, dev_index); } #else -void -serial_puts (const char *s) +void serial_puts(const char *s) { _serial_puts(s, UART_NR); } @@ -289,12 +312,11 @@ serial_puts (const char *s) #if defined(CONFIG_SERIAL_MULTI) DECLARE_S3C_SERIAL_FUNCTIONS(0); struct serial_device s3c24xx_serial0_device = - INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0", "S3UART1"); +INIT_S3C_SERIAL_STRUCTURE(0, "s3ser0", "S3UART1"); DECLARE_S3C_SERIAL_FUNCTIONS(1); struct serial_device s3c24xx_serial1_device = - INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1", "S3UART2"); +INIT_S3C_SERIAL_STRUCTURE(1, "s3ser1", "S3UART2"); DECLARE_S3C_SERIAL_FUNCTIONS(2); struct serial_device s3c24xx_serial2_device = - INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2", "S3UART3"); - +INIT_S3C_SERIAL_STRUCTURE(2, "s3ser2", "S3UART3"); #endif /* CONFIG_SERIAL_MULTI */ |