diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/amba-pl010.c | 2 | ||||
| -rw-r--r-- | drivers/serial/amba-pl011.c | 90 | ||||
| -rw-r--r-- | drivers/serial/atmel_serial.c | 1 | ||||
| -rw-r--r-- | drivers/serial/cpm_uart/cpm_uart_core.c | 143 | ||||
| -rw-r--r-- | drivers/serial/serial_cs.c | 1 | ||||
| -rw-r--r-- | drivers/serial/suncore.c | 4 | ||||
| -rw-r--r-- | drivers/serial/sunsu.c | 13 |
7 files changed, 170 insertions, 84 deletions
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c index b09a638d051..50441ffe8e3 100644 --- a/drivers/serial/amba-pl010.c +++ b/drivers/serial/amba-pl010.c @@ -782,7 +782,7 @@ static int pl010_resume(struct amba_device *dev) return 0; } -static struct amba_id pl010_ids[] __initdata = { +static struct amba_id pl010_ids[] = { { .id = 0x00041010, .mask = 0x000fffff, diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c index eb4cb480b93..6ca7a44f29c 100644 --- a/drivers/serial/amba-pl011.c +++ b/drivers/serial/amba-pl011.c @@ -69,9 +69,12 @@ struct uart_amba_port { struct uart_port port; struct clk *clk; - unsigned int im; /* interrupt mask */ + unsigned int im; /* interrupt mask */ unsigned int old_status; - unsigned int ifls; /* vendor-specific */ + unsigned int ifls; /* vendor-specific */ + unsigned int lcrh_tx; /* vendor-specific */ + unsigned int lcrh_rx; /* vendor-specific */ + bool oversampling; /* vendor-specific */ bool autorts; }; @@ -79,16 +82,25 @@ struct uart_amba_port { struct vendor_data { unsigned int ifls; unsigned int fifosize; + unsigned int lcrh_tx; + unsigned int lcrh_rx; + bool oversampling; }; static struct vendor_data vendor_arm = { .ifls = UART011_IFLS_RX4_8|UART011_IFLS_TX4_8, .fifosize = 16, + .lcrh_tx = UART011_LCRH, + .lcrh_rx = UART011_LCRH, + .oversampling = false, }; static struct vendor_data vendor_st = { .ifls = UART011_IFLS_RX_HALF|UART011_IFLS_TX_HALF, .fifosize = 64, + .lcrh_tx = ST_UART011_LCRH_TX, + .lcrh_rx = ST_UART011_LCRH_RX, + .oversampling = true, }; static void pl011_stop_tx(struct uart_port *port) @@ -327,12 +339,12 @@ static void pl011_break_ctl(struct uart_port *port, int break_state) unsigned int lcr_h; spin_lock_irqsave(&uap->port.lock, flags); - lcr_h = readw(uap->port.membase + UART011_LCRH); + lcr_h = readw(uap->port.membase + uap->lcrh_tx); if (break_state == -1) lcr_h |= UART01x_LCRH_BRK; else lcr_h &= ~UART01x_LCRH_BRK; - writew(lcr_h, uap->port.membase + UART011_LCRH); + writew(lcr_h, uap->port.membase + uap->lcrh_tx); spin_unlock_irqrestore(&uap->port.lock, flags); } @@ -393,7 +405,17 @@ static int pl011_startup(struct uart_port *port) writew(cr, uap->port.membase + UART011_CR); writew(0, uap->port.membase + UART011_FBRD); writew(1, uap->port.membase + UART011_IBRD); - writew(0, uap->port.membase + UART011_LCRH); + writew(0, uap->port.membase + uap->lcrh_rx); + if (uap->lcrh_tx != uap->lcrh_rx) { + int i; + /* + * Wait 10 PCLKs before writing LCRH_TX register, + * to get this delay write read only register 10 times + */ + for (i = 0; i < 10; ++i) + writew(0xff, uap->port.membase + UART011_MIS); + writew(0, uap->port.membase + uap->lcrh_tx); + } writew(0, uap->port.membase + UART01x_DR); while (readw(uap->port.membase + UART01x_FR) & UART01x_FR_BUSY) barrier(); @@ -422,10 +444,19 @@ static int pl011_startup(struct uart_port *port) return retval; } +static void pl011_shutdown_channel(struct uart_amba_port *uap, + unsigned int lcrh) +{ + unsigned long val; + + val = readw(uap->port.membase + lcrh); + val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN); + writew(val, uap->port.membase + lcrh); +} + static void pl011_shutdown(struct uart_port *port) { struct uart_amba_port *uap = (struct uart_amba_port *)port; - unsigned long val; /* * disable all interrupts @@ -450,9 +481,9 @@ static void pl011_shutdown(struct uart_port *port) /* * disable break condition and fifos */ - val = readw(uap->port.membase + UART011_LCRH); - val &= ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN); - writew(val, uap->port.membase + UART011_LCRH); + pl011_shutdown_channel(uap, uap->lcrh_rx); + if (uap->lcrh_rx != uap->lcrh_tx) + pl011_shutdown_channel(uap, uap->lcrh_tx); /* * Shut down the clock producer @@ -472,8 +503,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, /* * Ask the core to calculate the divisor for us. */ - baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); - quot = port->uartclk * 4 / baud; + baud = uart_get_baud_rate(port, termios, old, 0, + port->uartclk/(uap->oversampling ? 8 : 16)); + + if (baud > port->uartclk/16) + quot = DIV_ROUND_CLOSEST(port->uartclk * 8, baud); + else + quot = DIV_ROUND_CLOSEST(port->uartclk * 4, baud); switch (termios->c_cflag & CSIZE) { case CS5: @@ -552,6 +588,13 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, uap->autorts = false; } + if (uap->oversampling) { + if (baud > port->uartclk/16) + old_cr |= ST_UART011_CR_OVSFACT; + else + old_cr &= ~ST_UART011_CR_OVSFACT; + } + /* Set baud rate */ writew(quot & 0x3f, port->membase + UART011_FBRD); writew(quot >> 6, port->membase + UART011_IBRD); @@ -561,7 +604,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios, * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L * ----------^----------^----------^----------^----- */ - writew(lcr_h, port->membase + UART011_LCRH); + writew(lcr_h, port->membase + uap->lcrh_rx); + if (uap->lcrh_rx != uap->lcrh_tx) { + int i; + /* + * Wait 10 PCLKs before writing LCRH_TX register, + * to get this delay write read only register 10 times + */ + for (i = 0; i < 10; ++i) + writew(0xff, uap->port.membase + UART011_MIS); + writew(lcr_h, port->membase + uap->lcrh_tx); + } writew(old_cr, port->membase + UART011_CR); spin_unlock_irqrestore(&port->lock, flags); @@ -688,7 +741,7 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud, if (readw(uap->port.membase + UART011_CR) & UART01x_CR_UARTEN) { unsigned int lcr_h, ibrd, fbrd; - lcr_h = readw(uap->port.membase + UART011_LCRH); + lcr_h = readw(uap->port.membase + uap->lcrh_tx); *parity = 'n'; if (lcr_h & UART01x_LCRH_PEN) { @@ -707,6 +760,12 @@ pl011_console_get_options(struct uart_amba_port *uap, int *baud, fbrd = readw(uap->port.membase + UART011_FBRD); *baud = uap->port.uartclk * 4 / (64 * ibrd + fbrd); + + if (uap->oversampling) { + if (readw(uap->port.membase + UART011_CR) + & ST_UART011_CR_OVSFACT) + *baud *= 2; + } } } @@ -800,6 +859,9 @@ static int pl011_probe(struct amba_device *dev, struct amba_id *id) } uap->ifls = vendor->ifls; + uap->lcrh_rx = vendor->lcrh_rx; + uap->lcrh_tx = vendor->lcrh_tx; + uap->oversampling = vendor->oversampling; uap->port.dev = &dev->dev; uap->port.mapbase = dev->res.start; uap->port.membase = base; @@ -868,7 +930,7 @@ static int pl011_resume(struct amba_device *dev) } #endif -static struct amba_id pl011_ids[] __initdata = { +static struct amba_id pl011_ids[] = { { .id = 0x00041011, .mask = 0x000fffff, diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index eed3c2d8dd1..a182def7007 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -41,6 +41,7 @@ #include <linux/uaccess.h> #include <asm/io.h> +#include <asm/ioctls.h> #include <asm/mach/serial_at91.h> #include <mach/board.h> diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c index 9259e849f46..6016179db53 100644 --- a/drivers/serial/cpm_uart/cpm_uart_core.c +++ b/drivers/serial/cpm_uart/cpm_uart_core.c @@ -930,6 +930,83 @@ static void cpm_uart_config_port(struct uart_port *port, int flags) } } +#if defined(CONFIG_CONSOLE_POLL) || defined(CONFIG_SERIAL_CPM_CONSOLE) +/* + * Write a string to the serial port + * Note that this is called with interrupts already disabled + */ +static void cpm_uart_early_write(struct uart_cpm_port *pinfo, + const char *string, u_int count) +{ + unsigned int i; + cbd_t __iomem *bdp, *bdbase; + unsigned char *cpm_outp_addr; + + /* Get the address of the host memory buffer. + */ + bdp = pinfo->tx_cur; + bdbase = pinfo->tx_bd_base; + + /* + * Now, do each character. This is not as bad as it looks + * since this is a holding FIFO and not a transmitting FIFO. + * We could add the complexity of filling the entire transmit + * buffer, but we would just wait longer between accesses...... + */ + for (i = 0; i < count; i++, string++) { + /* Wait for transmitter fifo to empty. + * Ready indicates output is ready, and xmt is doing + * that, not that it is ready for us to send. + */ + while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) + ; + + /* Send the character out. + * If the buffer address is in the CPM DPRAM, don't + * convert it. + */ + cpm_outp_addr = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), + pinfo); + *cpm_outp_addr = *string; + + out_be16(&bdp->cbd_datlen, 1); + setbits16(&bdp->cbd_sc, BD_SC_READY); + + if (in_be16(&bdp->cbd_sc) & BD_SC_WRAP) + bdp = bdbase; + else + bdp++; + + /* if a LF, also do CR... */ + if (*string == 10) { + while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) + ; + + cpm_outp_addr = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), + pinfo); + *cpm_outp_addr = 13; + + out_be16(&bdp->cbd_datlen, 1); + setbits16(&bdp->cbd_sc, BD_SC_READY); + + if (in_be16(&bdp->cbd_sc) & BD_SC_WRAP) + bdp = bdbase; + else + bdp++; + } + } + + /* + * Finally, Wait for transmitter & holding register to empty + * and restore the IER + */ + while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) + ; + + pinfo->tx_cur = bdp; +} +#endif + #ifdef CONFIG_CONSOLE_POLL /* Serial polling routines for writing and reading from the uart while * in an interrupt or debug context. @@ -999,7 +1076,7 @@ static void cpm_put_poll_char(struct uart_port *port, static char ch[2]; ch[0] = (char)c; - cpm_uart_early_write(pinfo->port.line, ch, 1); + cpm_uart_early_write(pinfo, ch, 1); } #endif /* CONFIG_CONSOLE_POLL */ @@ -1130,9 +1207,6 @@ static void cpm_uart_console_write(struct console *co, const char *s, u_int count) { struct uart_cpm_port *pinfo = &cpm_uart_ports[co->index]; - unsigned int i; - cbd_t __iomem *bdp, *bdbase; - unsigned char *cp; unsigned long flags; int nolock = oops_in_progress; @@ -1142,66 +1216,7 @@ static void cpm_uart_console_write(struct console *co, const char *s, spin_lock_irqsave(&pinfo->port.lock, flags); } - /* Get the address of the host memory buffer. - */ - bdp = pinfo->tx_cur; - bdbase = pinfo->tx_bd_base; - - /* - * Now, do each character. This is not as bad as it looks - * since this is a holding FIFO and not a transmitting FIFO. - * We could add the complexity of filling the entire transmit - * buffer, but we would just wait longer between accesses...... - */ - for (i = 0; i < count; i++, s++) { - /* Wait for transmitter fifo to empty. - * Ready indicates output is ready, and xmt is doing - * that, not that it is ready for us to send. - */ - while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) - ; - - /* Send the character out. - * If the buffer address is in the CPM DPRAM, don't - * convert it. - */ - cp = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), pinfo); - *cp = *s; - - out_be16(&bdp->cbd_datlen, 1); - setbits16(&bdp->cbd_sc, BD_SC_READY); - - if (in_be16(&bdp->cbd_sc) & BD_SC_WRAP) - bdp = bdbase; - else - bdp++; - - /* if a LF, also do CR... */ - if (*s == 10) { - while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) - ; - - cp = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), pinfo); - *cp = 13; - - out_be16(&bdp->cbd_datlen, 1); - setbits16(&bdp->cbd_sc, BD_SC_READY); - - if (in_be16(&bdp->cbd_sc) & BD_SC_WRAP) - bdp = bdbase; - else - bdp++; - } - } - - /* - * Finally, Wait for transmitter & holding register to empty - * and restore the IER - */ - while ((in_be16(&bdp->cbd_sc) & BD_SC_READY) != 0) - ; - - pinfo->tx_cur = bdp; + cpm_uart_early_write(pinfo, s, count); if (unlikely(nolock)) { local_irq_restore(flags); diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index 526307368f8..ab17c08ddc0 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -821,6 +821,7 @@ static struct pcmcia_device_id serial_ids[] = { PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "Psion Dacom", "Gold Card V34 Ethernet", 0xf5f025c2, 0x338e8155, "cis/PCMLM28.cis"), PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "Psion Dacom", "Gold Card V34 Ethernet GSM", 0xf5f025c2, 0x4ae85d35, "cis/PCMLM28.cis"), PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "LINKSYS", "PCMLM28", 0xf7cb0b07, 0x66881874, "cis/PCMLM28.cis"), + PCMCIA_PFC_DEVICE_CIS_PROD_ID12(1, "TOSHIBA", "Modem/LAN Card", 0xb4585a1a, 0x53f922f8, "cis/PCMLM28.cis"), PCMCIA_MFC_DEVICE_CIS_PROD_ID12(1, "DAYNA COMMUNICATIONS", "LAN AND MODEM MULTIFUNCTION", 0x8fdf8f89, 0xdd5ed9e8, "cis/DP83903.cis"), PCMCIA_MFC_DEVICE_CIS_PROD_ID4(1, "NSC MF LAN/Modem", 0x58fc6056, "cis/DP83903.cis"), PCMCIA_MFC_DEVICE_CIS_MANF_CARD(1, 0x0101, 0x0556, "cis/3CCFEM556.cis"), diff --git a/drivers/serial/suncore.c b/drivers/serial/suncore.c index ed7d958b0a0..544f2e25d0e 100644 --- a/drivers/serial/suncore.c +++ b/drivers/serial/suncore.c @@ -71,7 +71,9 @@ int sunserial_console_match(struct console *con, struct device_node *dp, con->index = line; drv->cons = con; - add_preferred_console(con->name, line, NULL); + + if (!console_set_on_cmdline) + add_preferred_console(con->name, line, NULL); return 1; } diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c index 234459c2f01..ffbf4553f66 100644 --- a/drivers/serial/sunsu.c +++ b/drivers/serial/sunsu.c @@ -1500,20 +1500,25 @@ out_unmap: static int __devexit su_remove(struct of_device *op) { struct uart_sunsu_port *up = dev_get_drvdata(&op->dev); + bool kbdms = false; if (up->su_type == SU_PORT_MS || - up->su_type == SU_PORT_KBD) { + up->su_type == SU_PORT_KBD) + kbdms = true; + + if (kbdms) { #ifdef CONFIG_SERIO serio_unregister_port(&up->serio); #endif - kfree(up); - } else if (up->port.type != PORT_UNKNOWN) { + } else if (up->port.type != PORT_UNKNOWN) uart_remove_one_port(&sunsu_reg, &up->port); - } if (up->port.membase) of_iounmap(&op->resource[0], up->port.membase, up->reg_size); + if (kbdms) + kfree(up); + dev_set_drvdata(&op->dev, NULL); return 0; |