diff options
Diffstat (limited to 'drivers/serial')
-rw-r--r-- | drivers/serial/68360serial.c | 51 | ||||
-rw-r--r-- | drivers/serial/8250.c | 69 | ||||
-rw-r--r-- | drivers/serial/Kconfig | 14 | ||||
-rw-r--r-- | drivers/serial/altera_uart.c | 156 | ||||
-rw-r--r-- | drivers/serial/bfin_sport_uart.c | 7 | ||||
-rw-r--r-- | drivers/serial/imx.c | 5 | ||||
-rw-r--r-- | drivers/serial/ioc3_serial.c | 5 | ||||
-rw-r--r-- | drivers/serial/jsm/jsm_driver.c | 4 | ||||
-rw-r--r-- | drivers/serial/kgdboc.c | 2 | ||||
-rw-r--r-- | drivers/serial/max3107.c | 34 | ||||
-rw-r--r-- | drivers/serial/mfd.c | 50 | ||||
-rw-r--r-- | drivers/serial/mrst_max3110.c | 359 | ||||
-rw-r--r-- | drivers/serial/mrst_max3110.h | 1 | ||||
-rw-r--r-- | drivers/serial/samsung.c | 2 | ||||
-rw-r--r-- | drivers/serial/serial_core.c | 49 | ||||
-rw-r--r-- | drivers/serial/serial_cs.c | 205 | ||||
-rw-r--r-- | drivers/serial/uartlite.c | 26 |
17 files changed, 607 insertions, 432 deletions
diff --git a/drivers/serial/68360serial.c b/drivers/serial/68360serial.c index 0dff3bb..88b1335 100644 --- a/drivers/serial/68360serial.c +++ b/drivers/serial/68360serial.c @@ -1381,6 +1381,30 @@ static void send_break(ser_info_t *info, unsigned int duration) } +/* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ +static int rs_360_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) +{ + ser_info_t *info = (ser_info_t *)tty->driver_data; + struct async_icount cnow; + + local_irq_disable(); + cnow = info->state->icount; + local_irq_enable(); + + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + + return 0; +} + static int rs_360_ioctl(struct tty_struct *tty, struct file * file, unsigned int cmd, unsigned long arg) { @@ -1394,7 +1418,7 @@ static int rs_360_ioctl(struct tty_struct *tty, struct file * file, if (serial_paranoia_check(info, tty->name, "rs_ioctl")) return -ENODEV; - if ((cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) { + if (cmd != TIOCMIWAIT) { if (tty->flags & (1 << TTY_IO_ERROR)) return -EIO; } @@ -1477,31 +1501,6 @@ static int rs_360_ioctl(struct tty_struct *tty, struct file * file, return 0; #endif - /* - * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) - * Return: write counters to the user passed counter struct - * NB: both 1->0 and 0->1 transitions are counted except for - * RI where only 0->1 is counted. - */ - case TIOCGICOUNT: - local_irq_disable(); - cnow = info->state->icount; - local_irq_enable(); - p_cuser = (struct serial_icounter_struct *) arg; -/* error = put_user(cnow.cts, &p_cuser->cts); */ -/* if (error) return error; */ -/* error = put_user(cnow.dsr, &p_cuser->dsr); */ -/* if (error) return error; */ -/* error = put_user(cnow.rng, &p_cuser->rng); */ -/* if (error) return error; */ -/* error = put_user(cnow.dcd, &p_cuser->dcd); */ -/* if (error) return error; */ - - put_user(cnow.cts, &p_cuser->cts); - put_user(cnow.dsr, &p_cuser->dsr); - put_user(cnow.rng, &p_cuser->rng); - put_user(cnow.dcd, &p_cuser->dcd); - return 0; default: return -ENOIOCTLCMD; diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 24110f6..167c4a6 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -31,6 +31,7 @@ #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/tty.h> +#include <linux/ratelimit.h> #include <linux/tty_flip.h> #include <linux/serial_reg.h> #include <linux/serial_core.h> @@ -154,12 +155,6 @@ struct uart_8250_port { unsigned char lsr_saved_flags; #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA unsigned char msr_saved_flags; - - /* - * We provide a per-port pm hook. - */ - void (*pm)(struct uart_port *port, - unsigned int state, unsigned int old); }; struct irq_info { @@ -1606,8 +1601,8 @@ static irqreturn_t serial8250_interrupt(int irq, void *dev_id) if (l == i->head && pass_counter++ > PASS_LIMIT) { /* If we hit this, we're dead. */ - printk(KERN_ERR "serial8250: too much work for " - "irq%d\n", irq); + printk_ratelimited(KERN_ERR + "serial8250: too much work for irq%d\n", irq); break; } } while (l != end); @@ -1722,12 +1717,6 @@ static void serial_unlink_irq_chain(struct uart_8250_port *up) mutex_unlock(&hash_mutex); } -/* Base timer interval for polling */ -static inline int poll_timeout(int timeout) -{ - return timeout > 6 ? (timeout / 2 - 2) : 1; -} - /* * This function is used to handle ports that do not have an * interrupt. This doesn't work very well for 16450's, but gives @@ -1742,7 +1731,7 @@ static void serial8250_timeout(unsigned long data) iir = serial_in(up, UART_IIR); if (!(iir & UART_IIR_NO_INT)) serial8250_handle_port(up); - mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout)); + mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port)); } static void serial8250_backup_timeout(unsigned long data) @@ -1787,7 +1776,7 @@ static void serial8250_backup_timeout(unsigned long data) /* Standard timer interval plus 0.2s to keep the port running */ mod_timer(&up->timer, - jiffies + poll_timeout(up->port.timeout) + HZ / 5); + jiffies + uart_poll_timeout(&up->port) + HZ / 5); } static unsigned int serial8250_tx_empty(struct uart_port *port) @@ -1867,15 +1856,17 @@ static void wait_for_xmitr(struct uart_8250_port *up, int bits) unsigned int status, tmout = 10000; /* Wait up to 10ms for the character(s) to be sent. */ - do { + for (;;) { status = serial_in(up, UART_LSR); up->lsr_saved_flags |= status & LSR_SAVE_FLAGS; + if ((status & bits) == bits) + break; if (--tmout == 0) break; udelay(1); - } while ((status & bits) != bits); + } /* Wait up to 1s for flow control if necessary */ if (up->port.flags & UPF_CONS_FLOW) { @@ -2069,7 +2060,7 @@ static int serial8250_startup(struct uart_port *port) up->timer.function = serial8250_backup_timeout; up->timer.data = (unsigned long)up; mod_timer(&up->timer, jiffies + - poll_timeout(up->port.timeout) + HZ / 5); + uart_poll_timeout(port) + HZ / 5); } /* @@ -2079,7 +2070,7 @@ static int serial8250_startup(struct uart_port *port) */ if (!is_real_interrupt(up->port.irq)) { up->timer.data = (unsigned long)up; - mod_timer(&up->timer, jiffies + poll_timeout(up->port.timeout)); + mod_timer(&up->timer, jiffies + uart_poll_timeout(port)); } else { retval = serial_link_irq_chain(up); if (retval) @@ -2440,16 +2431,24 @@ serial8250_set_ldisc(struct uart_port *port, int new) port->flags &= ~UPF_HARDPPS_CD; } -static void -serial8250_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) + +void serial8250_do_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) { struct uart_8250_port *p = (struct uart_8250_port *)port; serial8250_set_sleep(p, state != 0); +} +EXPORT_SYMBOL(serial8250_do_pm); - if (p->pm) - p->pm(port, state, oldstate); +static void +serial8250_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) +{ + if (port->pm) + port->pm(port, state, oldstate); + else + serial8250_do_pm(port, state, oldstate); } static unsigned int serial8250_port_size(struct uart_8250_port *pt) @@ -2674,6 +2673,16 @@ static struct uart_ops serial8250_pops = { static struct uart_8250_port serial8250_ports[UART_NR]; +static void (*serial8250_isa_config)(int port, struct uart_port *up, + unsigned short *capabilities); + +void serial8250_set_isa_configurator( + void (*v)(int port, struct uart_port *up, unsigned short *capabilities)) +{ + serial8250_isa_config = v; +} +EXPORT_SYMBOL(serial8250_set_isa_configurator); + static void __init serial8250_isa_init_ports(void) { struct uart_8250_port *up; @@ -2719,6 +2728,9 @@ static void __init serial8250_isa_init_ports(void) up->port.regshift = old_serial_port[i].iomem_reg_shift; set_io_from_upio(&up->port); up->port.irqflags |= irqflag; + if (serial8250_isa_config != NULL) + serial8250_isa_config(i, &up->port, &up->capabilities); + } } @@ -3010,6 +3022,7 @@ static int __devinit serial8250_probe(struct platform_device *dev) port.serial_in = p->serial_in; port.serial_out = p->serial_out; port.set_termios = p->set_termios; + port.pm = p->pm; port.dev = &dev->dev; port.irqflags |= irqflag; ret = serial8250_register_port(&port); @@ -3176,6 +3189,12 @@ int serial8250_register_port(struct uart_port *port) /* Possibly override set_termios call */ if (port->set_termios) uart->port.set_termios = port->set_termios; + if (port->pm) + uart->port.pm = port->pm; + + if (serial8250_isa_config != NULL) + serial8250_isa_config(0, &uart->port, + &uart->capabilities); ret = uart_add_one_port(&serial8250_reg, &uart->port); if (ret == 0) diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index 12900f7..9278164 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -458,6 +458,7 @@ config SERIAL_SAMSUNG_UARTS int depends on ARM && PLAT_SAMSUNG default 2 if ARCH_S3C2400 + default 6 if ARCH_S5P6450 default 4 if SERIAL_SAMSUNG_UARTS_4 default 3 help @@ -526,12 +527,12 @@ config SERIAL_S3C24A0 Serial port support for the Samsung S3C24A0 SoC config SERIAL_S3C6400 - tristate "Samsung S3C6400/S3C6410/S5P6440/S5PC100 Serial port support" - depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440 || CPU_S5PC100) + tristate "Samsung S3C6400/S3C6410/S5P6440/S5P6450/S5PC100 Serial port support" + depends on SERIAL_SAMSUNG && (CPU_S3C6400 || CPU_S3C6410 || CPU_S5P6440 || CPU_S5P6450 || CPU_S5PC100) select SERIAL_SAMSUNG_UARTS_4 default y help - Serial port support for the Samsung S3C6400, S3C6410, S5P6440 + Serial port support for the Samsung S3C6400, S3C6410, S5P6440, S5P6450 and S5PC100 SoCs config SERIAL_S5PV210 @@ -717,13 +718,6 @@ config SERIAL_MRST_MAX3110 the Intel Moorestown platform. On other systems use the max3100 driver. -config MRST_MAX3110_IRQ - boolean "Enable GPIO IRQ for Max3110 over Moorestown" - default n - depends on SERIAL_MRST_MAX3110 && GPIO_LANGWELL - help - This has to be enabled after Moorestown GPIO driver is loaded - config SERIAL_MFD_HSU tristate "Medfield High Speed UART support" depends on PCI diff --git a/drivers/serial/altera_uart.c b/drivers/serial/altera_uart.c index f8d8a00..7212162 100644 --- a/drivers/serial/altera_uart.c +++ b/drivers/serial/altera_uart.c @@ -15,6 +15,7 @@ #include <linux/kernel.h> #include <linux/init.h> +#include <linux/timer.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/console.h> @@ -27,6 +28,8 @@ #include <linux/altera_uart.h> #define DRV_NAME "altera_uart" +#define SERIAL_ALTERA_MAJOR 204 +#define SERIAL_ALTERA_MINOR 213 /* * Altera UART register definitions according to the Nios UART datasheet: @@ -76,13 +79,28 @@ */ struct altera_uart { struct uart_port port; + struct timer_list tmr; unsigned int sigs; /* Local copy of line sigs */ unsigned short imr; /* Local IMR mirror */ }; +static u32 altera_uart_readl(struct uart_port *port, int reg) +{ + struct altera_uart_platform_uart *platp = port->private_data; + + return readl(port->membase + (reg << platp->bus_shift)); +} + +static void altera_uart_writel(struct uart_port *port, u32 dat, int reg) +{ + struct altera_uart_platform_uart *platp = port->private_data; + + writel(dat, port->membase + (reg << platp->bus_shift)); +} + static unsigned int altera_uart_tx_empty(struct uart_port *port) { - return (readl(port->membase + ALTERA_UART_STATUS_REG) & + return (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TMT_MSK) ? TIOCSER_TEMT : 0; } @@ -91,8 +109,7 @@ static unsigned int altera_uart_get_mctrl(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); unsigned int sigs; - sigs = - (readl(port->membase + ALTERA_UART_STATUS_REG) & + sigs = (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_CTS_MSK) ? TIOCM_CTS : 0; sigs |= (pp->sigs & TIOCM_RTS); @@ -108,7 +125,7 @@ static void altera_uart_set_mctrl(struct uart_port *port, unsigned int sigs) pp->imr |= ALTERA_UART_CONTROL_RTS_MSK; else pp->imr &= ~ALTERA_UART_CONTROL_RTS_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_start_tx(struct uart_port *port) @@ -116,7 +133,7 @@ static void altera_uart_start_tx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr |= ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_stop_tx(struct uart_port *port) @@ -124,7 +141,7 @@ static void altera_uart_stop_tx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr &= ~ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_stop_rx(struct uart_port *port) @@ -132,7 +149,7 @@ static void altera_uart_stop_rx(struct uart_port *port) struct altera_uart *pp = container_of(port, struct altera_uart, port); pp->imr &= ~ALTERA_UART_CONTROL_RRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } static void altera_uart_break_ctl(struct uart_port *port, int break_state) @@ -145,7 +162,7 @@ static void altera_uart_break_ctl(struct uart_port *port, int break_state) pp->imr |= ALTERA_UART_CONTROL_TRBK_MSK; else pp->imr &= ~ALTERA_UART_CONTROL_TRBK_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); spin_unlock_irqrestore(&port->lock, flags); } @@ -168,7 +185,8 @@ static void altera_uart_set_termios(struct uart_port *port, tty_termios_encode_baud_rate(termios, baud, baud); spin_lock_irqsave(&port->lock, flags); - writel(baudclk, port->membase + ALTERA_UART_DIVISOR_REG); + uart_update_timeout(port, termios->c_cflag, baud); + altera_uart_writel(port, baudclk, ALTERA_UART_DIVISOR_REG); spin_unlock_irqrestore(&port->lock, flags); } @@ -178,14 +196,15 @@ static void altera_uart_rx_chars(struct altera_uart *pp) unsigned char ch, flag; unsigned short status; - while ((status = readl(port->membase + ALTERA_UART_STATUS_REG)) & + while ((status = altera_uart_readl(port, ALTERA_UART_STATUS_REG)) & ALTERA_UART_STATUS_RRDY_MSK) { - ch = readl(port->membase + ALTERA_UART_RXDATA_REG); + ch = altera_uart_readl(port, ALTERA_UART_RXDATA_REG); flag = TTY_NORMAL; port->icount.rx++; if (status & ALTERA_UART_STATUS_E_MSK) { - writel(status, port->membase + ALTERA_UART_STATUS_REG); + altera_uart_writel(port, status, + ALTERA_UART_STATUS_REG); if (status & ALTERA_UART_STATUS_BRK_MSK) { port->icount.brk++; @@ -225,18 +244,18 @@ static void altera_uart_tx_chars(struct altera_uart *pp) if (port->x_char) { /* Send special char - probably flow control */ - writel(port->x_char, port->membase + ALTERA_UART_TXDATA_REG); + altera_uart_writel(port, port->x_char, ALTERA_UART_TXDATA_REG); port->x_char = 0; port->icount.tx++; return; } - while (readl(port->membase + ALTERA_UART_STATUS_REG) & + while (altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TRDY_MSK) { if (xmit->head == xmit->tail) break; - writel(xmit->buf[xmit->tail], - port->membase + ALTERA_UART_TXDATA_REG); + altera_uart_writel(port, xmit->buf[xmit->tail], + ALTERA_UART_TXDATA_REG); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); port->icount.tx++; } @@ -246,7 +265,7 @@ static void altera_uart_tx_chars(struct altera_uart *pp) if (xmit->head == xmit->tail) { pp->imr &= ~ALTERA_UART_CONTROL_TRDY_MSK; - writel(pp->imr, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, pp->imr, ALTERA_UART_CONTROL_REG); } } @@ -256,7 +275,7 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data) struct altera_uart *pp = container_of(port, struct altera_uart, port); unsigned int isr; - isr = readl(port->membase + ALTERA_UART_STATUS_REG) & pp->imr; + isr = altera_uart_readl(port, ALTERA_UART_STATUS_REG) & pp->imr; spin_lock(&port->lock); if (isr & ALTERA_UART_STATUS_RRDY_MSK) @@ -268,14 +287,23 @@ static irqreturn_t altera_uart_interrupt(int irq, void *data) return IRQ_RETVAL(isr); } +static void altera_uart_timer(unsigned long data) +{ + struct uart_port *port = (void *)data; + struct altera_uart *pp = container_of(port, struct altera_uart, port); + + altera_uart_interrupt(0, port); + mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); +} + static void altera_uart_config_port(struct uart_port *port, int flags) { port->type = PORT_ALTERA_UART; /* Clear mask, so no surprise interrupts. */ - writel(0, port->membase + ALTERA_UART_CONTROL_REG); + altera_uart_writel(port, 0, ALTERA_UART_CONTROL_REG); /* Clear status register */ - writel(0, port->membase + ALTERA_UART_STATUS_REG); + altera_uart_writel(port, 0, ALTERA_UART_STATUS_REG); } static int altera_uart_startup(struct uart_port *port) @@ -284,6 +312,12 @@ static int altera_uart_startup(struct uart_port *port) unsigned long flags; int ret; + if (!port->irq) { + setup_timer(&pp->tmr, altera_uart_timer, (unsigned long)port); + mod_timer(&pp->tmr, jiffies + uart_poll_timeout(port)); + return 0; + } + ret = request_irq(port->irq, altera_uart_interrupt, IRQF_DISABLED, DRV_NAME, port); if (ret) { @@ -316,7 +350,10 @@ static void altera_uart_shutdown(struct uart_port *port) spin_unlock_irqrestore(&port->lock, flags); - free_irq(port->irq, port); + if (port->irq) + free_irq(port->irq, port); + else + del_timer_sync(&pp->tmr); } static const char *altera_uart_type(struct uart_port *port) @@ -384,8 +421,9 @@ int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp) port->iotype = SERIAL_IO_MEM; port->irq = platp[i].irq; port->uartclk = platp[i].uartclk; - port->flags = ASYNC_BOOT_AUTOCONF; + port->flags = UPF_BOOT_AUTOCONF; port->ops = &altera_uart_ops; + port->private_data = platp; } return 0; @@ -393,7 +431,7 @@ int __init early_altera_uart_setup(struct altera_uart_platform_uart *platp) static void altera_uart_console_putc(struct uart_port *port, const char c) { - while (!(readl(port->membase + ALTERA_UART_STATUS_REG) & + while (!(altera_uart_readl(port, ALTERA_UART_STATUS_REG) & ALTERA_UART_STATUS_TRDY_MSK)) cpu_relax(); @@ -423,7 +461,7 @@ static int __init altera_uart_console_setup(struct console *co, char *options) if (co->index < 0 || co->index >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS) return -EINVAL; port = &altera_uart_ports[co->index].port; - if (port->membase == 0) + if (!port->membase) return -ENODEV; if (options) @@ -435,7 +473,7 @@ static int __init altera_uart_console_setup(struct console *co, char *options) static struct uart_driver altera_uart_driver; static struct console altera_uart_console = { - .name = "ttyS", + .name = "ttyAL", .write = altera_uart_console_write, .device = uart_console_device, .setup = altera_uart_console_setup, @@ -466,9 +504,9 @@ console_initcall(altera_uart_console_init); static struct uart_driver altera_uart_driver = { .owner = THIS_MODULE, .driver_name = DRV_NAME, - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, + .dev_name = "ttyAL", + .major = SERIAL_ALTERA_MAJOR, + .minor = SERIAL_ALTERA_MINOR, .nr = CONFIG_SERIAL_ALTERA_UART_MAXPORTS, .cons = ALTERA_UART_CONSOLE, }; @@ -477,38 +515,55 @@ static int __devinit altera_uart_probe(struct platform_device *pdev) { struct altera_uart_platform_uart *platp = pdev->dev.platform_data; struct uart_port *port; - int i; + struct resource *res_mem; + struct resource *res_irq; + int i = pdev->id; - for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS && platp[i].mapbase; i++) { - port = &altera_uart_ports[i].port; + /* -1 emphasizes that the platform must have one port, no .N suffix */ + if (i == -1) + i = 0; - port->line = i; - port->type = PORT_ALTERA_UART; - port->mapbase = platp[i].mapbase; - port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE); - port->iotype = SERIAL_IO_MEM; - port->irq = platp[i].irq; - port->uartclk = platp[i].uartclk; - port->ops = &altera_uart_ops; - port->flags = ASYNC_BOOT_AUTOCONF; + if (i >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS) + return -EINVAL; - uart_add_one_port(&altera_uart_driver, port); - } + port = &altera_uart_ports[i].port; + + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res_mem) + port->mapbase = res_mem->start; + else if (platp->mapbase) + port->mapbase = platp->mapbase; + else + return -EINVAL; + + res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (res_irq) + port->irq = res_irq->start; + else if (platp->irq) + port->irq = platp->irq; + + port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE); + if (!port->membase) + return -ENOMEM; + + port->line = i; + port->type = PORT_ALTERA_UART; + port->iotype = SERIAL_IO_MEM; + port->uartclk = platp->uartclk; + port->ops = &altera_uart_ops; + port->flags = UPF_BOOT_AUTOCONF; + port->private_data = platp; + + uart_add_one_port(&altera_uart_driver, port); return 0; } static int __devexit altera_uart_remove(struct platform_device *pdev) { - struct uart_port *port; - int i; - - for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS; i++) { - port = &altera_uart_ports[i].port; - if (port) - uart_remove_one_port(&altera_uart_driver, port); - } + struct uart_port *port = &altera_uart_ports[pdev->id].port; + uart_remove_one_port(&altera_uart_driver, port); return 0; } @@ -550,3 +605,4 @@ MODULE_DESCRIPTION("Altera UART driver"); MODULE_AUTHOR("Thomas Chou <thomas@wytron.com.tw>"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRV_NAME); +MODULE_ALIAS_CHARDEV_MAJOR(SERIAL_ALTERA_MAJOR); diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c index 5318dd3..6f1b51e2 100644 --- a/drivers/serial/bfin_sport_uart.c +++ b/drivers/serial/bfin_sport_uart.c @@ -131,7 +131,12 @@ static int sport_uart_setup(struct sport_uart_port *up, int size, int baud_rate) pr_debug("%s RCR1:%x, RCR2:%x\n", __func__, SPORT_GET_RCR1(up), SPORT_GET_RCR2(up)); tclkdiv = sclk / (2 * baud_rate) - 1; - rclkdiv = sclk / (2 * baud_rate * 2) - 1; + /* The actual uart baud rate of devices vary between +/-2%. The sport + * RX sample rate should be faster than the double of the worst case, + * otherwise, wrong data are received. So, set sport RX clock to be + * 3% faster. + */ + rclkdiv = sclk / (2 * baud_rate * 2 * 97 / 100) - 1; SPORT_PUT_TCLKDIV(up, tclkdiv); SPORT_PUT_RCLKDIV(up, rclkdiv); SSYNC(); diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index 66ecc7a..dfcf4b1 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -327,14 +327,13 @@ static inline void imx_transmit_buffer(struct imx_port *sport) { struct circ_buf *xmit = &sport->port.state->xmit; - while (!(readl(sport->port.membase + UTS) & UTS_TXFULL)) { + while (!uart_circ_empty(xmit) && + !(readl(sport->port.membase + UTS) & UTS_TXFULL)) { /* send xmit->buf[xmit->tail] * out the port here */ writel(xmit->buf[xmit->tail], sport->port.membase + URTX0); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); sport->port.icount.tx++; - if (uart_circ_empty(xmit)) - break; } if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) diff --git a/drivers/serial/ioc3_serial.c b/drivers/serial/ioc3_serial.c index 93de907..ee43efc 100644 --- a/drivers/serial/ioc3_serial.c +++ b/drivers/serial/ioc3_serial.c @@ -2017,6 +2017,7 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) struct ioc3_port *port; struct ioc3_port *ports[PORTS_PER_CARD]; int phys_port; + int cnt; DPRINT_CONFIG(("%s (0x%p, 0x%p)\n", __func__, is, idd)); @@ -2044,6 +2045,7 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) if (!port) { printk(KERN_WARNING "IOC3 serial memory not available for port\n"); + ret = -ENOMEM; goto out4; } spin_lock_init(&port->ip_lock); @@ -2146,6 +2148,9 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) /* error exits that give back resources */ out4: + for (cnt = 0; cnt < phys_port; cnt++) + kfree(ports[cnt]); + kfree(card_ptr); return ret; } diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c index eaf5450..18f5484 100644 --- a/drivers/serial/jsm/jsm_driver.c +++ b/drivers/serial/jsm/jsm_driver.c @@ -172,13 +172,15 @@ static int __devinit jsm_probe_one(struct pci_dev *pdev, const struct pci_device jsm_uart_port_init here! */ dev_err(&pdev->dev, "memory allocation for flipbuf failed\n"); rc = -ENOMEM; - goto out_free_irq; + goto out_free_uart; } pci_set_drvdata(pdev, brd); pci_save_state(pdev); return 0; + out_free_uart: + jsm_remove_uart_port(brd); out_free_irq: jsm_remove_uart_port(brd); free_irq(brd->irq, brd); diff --git a/drivers/serial/kgdboc.c b/drivers/serial/kgdboc.c index 39f9a1a..d4b711c 100644 --- a/drivers/serial/kgdboc.c +++ b/drivers/serial/kgdboc.c @@ -243,7 +243,7 @@ static struct kgdb_io kgdboc_io_ops = { #ifdef CONFIG_KGDB_SERIAL_CONSOLE /* This is only available if kgdboc is a built in for early debugging */ -int __init kgdboc_early_init(char *opt) +static int __init kgdboc_early_init(char *opt) { /* save the first character of the config string because the * init routine can destroy it. diff --git a/drivers/serial/max3107.c b/drivers/serial/max3107.c index 67283c1..910870e 100644 --- a/drivers/serial/max3107.c +++ b/drivers/serial/max3107.c @@ -986,12 +986,14 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) s->rxbuf = kzalloc(sizeof(u16) * (MAX3107_RX_FIFO_SIZE+2), GFP_KERNEL); if (!s->rxbuf) { pr_err("Allocating RX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free4; } s->rxstr = kzalloc(sizeof(u8) * MAX3107_RX_FIFO_SIZE, GFP_KERNEL); if (!s->rxstr) { pr_err("Allocating RX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free3; } /* SPI Tx buffer * SPI transfer buffer @@ -1002,7 +1004,8 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) s->txbuf = kzalloc(sizeof(u16) * MAX3107_TX_FIFO_SIZE + 3, GFP_KERNEL); if (!s->txbuf) { pr_err("Allocating TX buffer failed\n"); - return -ENOMEM; + retval = -ENOMEM; + goto err_free2; } /* Initialize shared data lock */ spin_lock_init(&s->data_lock); @@ -1021,13 +1024,15 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) buf[0] = MAX3107_REVID_REG; if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) { dev_err(&s->spi->dev, "SPI transfer for REVID read failed\n"); - return -EIO; + retval = -EIO; + goto err_free1; } if ((buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID1 && (buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID2) { dev_err(&s->spi->dev, "REVID %x does not match\n", (buf[0] & MAX3107_SPI_RX_DATA_MASK)); - return -ENODEV; + retval = -ENODEV; + goto err_free1; } /* Disable all interrupts */ @@ -1047,7 +1052,8 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) /* Perform SPI transfer */ if (max3107_rw(s, (u8 *)buf, NULL, 4)) { dev_err(&s->spi->dev, "SPI transfer for init failed\n"); - return -EIO; + retval = -EIO; + goto err_free1; } /* Register UART driver */ @@ -1055,7 +1061,7 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) retval = uart_register_driver(&max3107_uart_driver); if (retval) { dev_err(&s->spi->dev, "Registering UART driver failed\n"); - return retval; + goto err_free1; } driver_registered = 1; } @@ -1074,13 +1080,13 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) retval = uart_add_one_port(&max3107_uart_driver, &s->port); if (retval < 0) { dev_err(&s->spi->dev, "Adding UART port failed\n"); - return retval; + goto err_free1; } if (pdata->configure) { retval = pdata->configure(s); if (retval < 0) - return retval; + goto err_free1; } /* Go to suspend mode */ @@ -1088,6 +1094,16 @@ int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata) pdata->hw_suspend(s, 1); return 0; + +err_free1: + kfree(s->txbuf); +err_free2: + kfree(s->rxstr); +err_free3: + kfree(s->rxbuf); +err_free4: + kfree(s); + return retval; } EXPORT_SYMBOL_GPL(max3107_probe); diff --git a/drivers/serial/mfd.c b/drivers/serial/mfd.c index 324c385..5fc699e 100644 --- a/drivers/serial/mfd.c +++ b/drivers/serial/mfd.c @@ -27,6 +27,7 @@ #include <linux/init.h> #include <linux/console.h> #include <linux/sysrq.h> +#include <linux/slab.h> #include <linux/serial_reg.h> #include <linux/circ_buf.h> #include <linux/delay.h> @@ -171,6 +172,9 @@ static ssize_t port_show_regs(struct file *file, char __user *user_buf, len += snprintf(buf + len, HSU_REGS_BUFSIZE - len, "DIV: \t\t0x%08x\n", serial_in(up, UART_DIV)); + if (len > HSU_REGS_BUFSIZE) + len = HSU_REGS_BUFSIZE; + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return ret; @@ -218,6 +222,9 @@ static ssize_t dma_show_regs(struct file *file, char __user *user_buf, len += snprintf(buf + len, HSU_REGS_BUFSIZE - len, "D0TSR: \t\t0x%08x\n", chan_readl(chan, HSU_CH_D3TSR)); + if (len > HSU_REGS_BUFSIZE) + len = HSU_REGS_BUFSIZE; + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return ret; @@ -227,12 +234,14 @@ static const struct file_operations port_regs_ops = { .owner = THIS_MODULE, .open = hsu_show_regs_open, .read = port_show_regs, + .llseek = default_llseek, }; static const struct file_operations dma_regs_ops = { .owner = THIS_MODULE, .open = hsu_show_regs_open, .read = dma_show_regs, + .llseek = default_llseek, }; static int hsu_debugfs_init(struct hsu_port *hsu) @@ -922,39 +931,52 @@ serial_hsu_set_termios(struct uart_port *port, struct ktermios *termios, cval |= UART_LCR_EPAR; /* + * The base clk is 50Mhz, and the baud rate come from: + * baud = 50M * MUL / (DIV * PS * DLAB) + * * For those basic low baud rate we can get the direct - * scalar from 2746800, like 115200 = 2746800/24, for those - * higher baud rate, we have to handle them case by case, - * but DIV reg is never touched as its default value 0x3d09 + * scalar from 2746800, like 115200 = 2746800/24. For those + * higher baud rate, we handle them case by case, mainly by + * adjusting the MUL/PS registers, and DIV register is kept + * as default value 0x3d09 to make things simple */ baud = uart_get_baud_rate(port, termios, old, 0, 4000000); - quot = uart_get_divisor(port, baud); + quot = 1; switch (baud) { case 3500000: mul = 0x3345; ps = 0xC; - quot = 1; + break; + case 3000000: + mul = 0x2EE0; break; case 2500000: mul = 0x2710; - ps = 0x10; - quot = 1; break; - case 18432000: + case 2000000: + mul = 0x1F40; + break; + case 1843200: mul = 0x2400; - ps = 0x10; - quot = 1; break; case 1500000: - mul = 0x1D4C; - ps = 0xc; - quot = 1; + mul = 0x1770; + break; + case 1000000: + mul = 0xFA0; + break; + case 500000: + mul = 0x7D0; break; default: - ; + /* Use uart_get_divisor to get quot for other baud rates */ + quot = 0; } + if (!quot) + quot = uart_get_divisor(port, baud); + if ((up->port.uartclk / quot) < (2400 * 16)) fcr = UART_FCR_ENABLE_FIFO | UART_FCR_HSU_64_1B; else if ((up->port.uartclk / quot) < (230400 * 16)) diff --git a/drivers/serial/mrst_max3110.c b/drivers/serial/mrst_max3110.c index f6ad1ec..b62857b 100644 --- a/drivers/serial/mrst_max3110.c +++ b/drivers/serial/mrst_max3110.c @@ -1,7 +1,7 @@ /* - * max3110.c - spi uart protocol driver for Maxim 3110 on Moorestown + * mrst_max3110.c - spi uart protocol driver for Maxim 3110 * - * Copyright (C) Intel 2008 Feng Tang <feng.tang@intel.com> + * Copyright (c) 2008-2010, Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -29,20 +29,16 @@ #include <linux/module.h> #include <linux/ioport.h> +#include <linux/irq.h> #include <linux/init.h> #include <linux/console.h> -#include <linux/sysrq.h> -#include <linux/platform_device.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/serial_core.h> #include <linux/serial_reg.h> #include <linux/kthread.h> -#include <linux/delay.h> -#include <asm/atomic.h> #include <linux/spi/spi.h> -#include <linux/spi/dw_spi.h> #include "mrst_max3110.h" @@ -55,7 +51,7 @@ struct uart_max3110 { struct uart_port port; struct spi_device *spi; - char *name; + char name[24]; wait_queue_head_t wq; struct task_struct *main_thread; @@ -66,35 +62,30 @@ struct uart_max3110 { u16 cur_conf; u8 clock; u8 parity, word_7bits; + u16 irq; unsigned long uart_flags; /* console related */ struct circ_buf con_xmit; - - /* irq related */ - u16 irq; }; /* global data structure, may need be removed */ -struct uart_max3110 *pmax; -static inline void receive_char(struct uart_max3110 *max, u8 ch); +static struct uart_max3110 *pmax; + static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len); -static int max3110_read_multi(struct uart_max3110 *max, int len, u8 *buf); -static void max3110_console_receive(struct uart_max3110 *max); +static int max3110_read_multi(struct uart_max3110 *max, u8 *buf); +static void max3110_con_receive(struct uart_max3110 *max); -int max3110_write_then_read(struct uart_max3110 *max, - const u8 *txbuf, u8 *rxbuf, unsigned len, int always_fast) +static int max3110_write_then_read(struct uart_max3110 *max, + const void *txbuf, void *rxbuf, unsigned len, int always_fast) { struct spi_device *spi = max->spi; struct spi_message message; struct spi_transfer x; int ret; - if (!txbuf || !rxbuf) - return -EINVAL; - spi_message_init(&message); memset(&x, 0, sizeof x); x.len = len; @@ -103,7 +94,7 @@ int max3110_write_then_read(struct uart_max3110 *max, spi_message_add_tail(&x, &message); if (always_fast) - x.speed_hz = 3125000; + x.speed_hz = spi->max_speed_hz; else if (max->baud) x.speed_hz = max->baud; @@ -112,58 +103,80 @@ int max3110_write_then_read(struct uart_max3110 *max, return ret; } -/* Write a u16 to the device, and return one u16 read back */ -int max3110_out(struct uart_max3110 *max, const u16 out) +/* Write a 16b word to the device */ +static int max3110_out(struct uart_max3110 *max, const u16 out) { - u16 tmp; + void *buf; + u16 *obuf, *ibuf; + u8 ch; int ret; - ret = max3110_write_then_read(max, (u8 *)&out, (u8 *)&tmp, 2, 1); - if (ret) - return ret; + buf = kzalloc(8, GFP_KERNEL | GFP_DMA); + if (!buf) + return -ENOMEM; + + obuf = buf; + ibuf = buf + 4; + *obuf = out; + ret = max3110_write_then_read(max, obuf, ibuf, 2, 1); + if (ret) { + pr_warning(PR_FMT "%s(): get err msg %d when sending 0x%x\n", + __func__, ret, out); + goto exit; + } /* If some valid data is read back */ - if (tmp & MAX3110_READ_DATA_AVAILABLE) - receive_char(max, (tmp & 0xff)); + if (*ibuf & MAX3110_READ_DATA_AVAILABLE) { + ch = *ibuf & 0xff; + receive_chars(max, &ch, 1); + } +exit: + kfree(buf); return ret; } -#define MAX_READ_LEN 20 /* * This is usually used to read data from SPIC RX FIFO, which doesn't - * need any delay like flushing character out. It returns how many - * valide bytes are read back + * need any delay like flushing character out. + * + * Return how many valide bytes are read back */ -static int max3110_read_multi(struct uart_max3110 *max, int len, u8 *buf) +static int max3110_read_multi(struct uart_max3110 *max, u8 *rxbuf) { - u16 out[MAX_READ_LEN], in[MAX_READ_LEN]; - u8 *pbuf, valid_str[MAX_READ_LEN]; - int i, j, bytelen; + void *buf; + u16 *obuf, *ibuf; + u8 *pbuf, valid_str[M3110_RX_FIFO_DEPTH]; + int i, j, blen; - if (len > MAX_READ_LEN) { - pr_err(PR_FMT "read len %d is too large\n", len); + blen = M3110_RX_FIFO_DEPTH * sizeof(u16); + buf = kzalloc(blen * 2, GFP_KERNEL | GFP_DMA); + if (!buf) { + pr_warning(PR_FMT "%s(): fail to alloc dma buffer\n", __func__); return 0; } - bytelen = len * 2; - memset(out, 0, bytelen); - memset(in, 0, bytelen); + /* tx/rx always have the same length */ + obuf = buf; + ibuf = buf + blen; - if (max3110_write_then_read(max, (u8 *)out, (u8 *)in, bytelen, 1)) + if (max3110_write_then_read(max, obuf, ibuf, blen, 1)) { + kfree(buf); return 0; + } - /* If caller don't provide a buffer, then handle received char */ - pbuf = buf ? buf : valid_str; + /* If caller doesn't provide a buffer, then handle received char */ + pbuf = rxbuf ? rxbuf : valid_str; - for (i = 0, j = 0; i < len; i++) { - if (in[i] & MAX3110_READ_DATA_AVAILABLE) - pbuf[j++] = (u8)(in[i] & 0xff); + for (i = 0, j = 0; i < M3110_RX_FIFO_DEPTH; i++) { + if (ibuf[i] & MAX3110_READ_DATA_AVAILABLE) + pbuf[j++] = ibuf[i] & 0xff; } if (j && (pbuf == valid_str)) receive_chars(max, valid_str, j); + kfree(buf); return j; } @@ -177,10 +190,6 @@ static void serial_m3110_con_putchar(struct uart_port *port, int ch) xmit->buf[xmit->head] = (char)ch; xmit->head = (xmit->head + 1) & (PAGE_SIZE - 1); } - - - if (!test_and_set_bit(CON_TX_NEEDED, &max->uart_flags)) - wake_up_process(max->main_thread); } /* @@ -196,6 +205,9 @@ static void serial_m3110_con_write(struct console *co, return; uart_console_write(&pmax->port, s, count, serial_m3110_con_putchar); + + if (!test_and_set_bit(CON_TX_NEEDED, &pmax->uart_flags)) + wake_up_process(pmax->main_thread); } static int __init @@ -209,6 +221,9 @@ serial_m3110_con_setup(struct console *co, char *options) pr_info(PR_FMT "setting up console\n"); + if (co->index == -1) + co->index = 0; + if (!max) { pr_err(PR_FMT "pmax is NULL, return"); return -ENODEV; @@ -239,8 +254,6 @@ static struct console serial_m3110_console = { .data = &serial_m3110_reg, }; -#define MRST_CONSOLE (&serial_m3110_console) - static unsigned int serial_m3110_tx_empty(struct uart_port *port) { return 1; @@ -258,32 +271,44 @@ static void serial_m3110_stop_rx(struct uart_port *port) } #define WORDS_PER_XFER 128 -static inline void send_circ_buf(struct uart_max3110 *max, +static void send_circ_buf(struct uart_max3110 *max, struct circ_buf *xmit) { - int len, left = 0; - u16 obuf[WORDS_PER_XFER], ibuf[WORDS_PER_XFER]; + void *buf; + u16 *obuf, *ibuf; u8 valid_str[WORDS_PER_XFER]; - int i, j; + int i, j, len, blen, dma_size, left, ret = 0; + + + dma_size = WORDS_PER_XFER * sizeof(u16) * 2; + buf = kzalloc(dma_size, GFP_KERNEL | GFP_DMA); + if (!buf) + return; + obuf = buf; + ibuf = buf + dma_size/2; while (!uart_circ_empty(xmit)) { left = uart_circ_chars_pending(xmit); while (left) { - len = (left >= WORDS_PER_XFER) ? WORDS_PER_XFER : left; + len = min(left, WORDS_PER_XFER); + blen = len * sizeof(u16); + memset(ibuf, 0, blen); - memset(obuf, 0, len * 2); - memset(ibuf, 0, len * 2); for (i = 0; i < len; i++) { obuf[i] = (u8)xmit->buf[xmit->tail] | WD_TAG; xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); } - max3110_write_then_read(max, (u8 *)obuf, - (u8 *)ibuf, len * 2, 0); + + /* Fail to send msg to console is not very critical */ + ret = max3110_write_then_read(max, obuf, ibuf, blen, 0); + if (ret) + pr_warning(PR_FMT "%s(): get err msg %d\n", + __func__, ret); for (i = 0, j = 0; i < len; i++) { if (ibuf[i] & MAX3110_READ_DATA_AVAILABLE) - valid_str[j++] = (u8)(ibuf[i] & 0xff); + valid_str[j++] = ibuf[i] & 0xff; } if (j) @@ -293,6 +318,8 @@ static inline void send_circ_buf(struct uart_max3110 *max, left -= len; } } + + kfree(buf); } static void transmit_char(struct uart_max3110 *max) @@ -312,8 +339,10 @@ static void transmit_char(struct uart_max3110 *max) serial_m3110_stop_tx(port); } -/* This will be called by uart_write() and tty_write, can't - * go to sleep */ +/* + * This will be called by uart_write() and tty_write, can't + * go to sleep + */ static void serial_m3110_start_tx(struct uart_port *port) { struct uart_max3110 *max = @@ -335,7 +364,7 @@ static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len) tty = port->state->port.tty; if (!tty) - return; /* receive some char before the tty is opened */ + return; while (len) { usable = tty_buffer_request_room(tty, len); @@ -343,32 +372,37 @@ static void receive_chars(struct uart_max3110 *max, unsigned char *str, int len) tty_insert_flip_string(tty, str, usable); str += usable; port->icount.rx += usable; - tty_flip_buffer_push(tty); } len -= usable; } + tty_flip_buffer_push(tty); } -static inline void receive_char(struct uart_max3110 *max, u8 ch) -{ - receive_chars(max, &ch, 1); -} - -static void max3110_console_receive(struct uart_max3110 *max) +/* + * This routine will be used in read_thread or RX IRQ handling, + * it will first do one round buffer read(8 words), if there is some + * valid RX data, will try to read 5 more rounds till all data + * is read out. + * + * Use stack space as data buffer to save some system load, and chose + * 504 Btyes as a threadhold to do a bulk push to upper tty layer when + * receiving bulk data, a much bigger buffer may cause stack overflow + */ +static void max3110_con_receive(struct uart_max3110 *max) { int loop = 1, num, total = 0; u8 recv_buf[512], *pbuf; pbuf = recv_buf; do { - num = max3110_read_multi(max, 8, pbuf); + num = max3110_read_multi(max, pbuf); if (num) { - loop = 10; + loop = 5; pbuf += num; total += num; - if (total >= 500) { + if (total >= 504) { receive_chars(max, recv_buf, total); pbuf = recv_buf; total = 0; @@ -396,7 +430,7 @@ static int max3110_main_thread(void *_max) mutex_lock(&max->thread_mutex); if (test_and_clear_bit(BIT_IRQ_PENDING, &max->uart_flags)) - max3110_console_receive(max); + max3110_con_receive(max); /* first handle console output */ if (test_and_clear_bit(CON_TX_NEEDED, &max->uart_flags)) @@ -413,7 +447,6 @@ static int max3110_main_thread(void *_max) return ret; } -#ifdef CONFIG_MRST_MAX3110_IRQ static irqreturn_t serial_m3110_irq(int irq, void *dev_id) { struct uart_max3110 *max = dev_id; @@ -425,7 +458,7 @@ static irqreturn_t serial_m3110_irq(int irq, void *dev_id) return IRQ_HANDLED; } -#else + /* if don't use RX IRQ, then need a thread to polling read */ static int max3110_read_thread(void *_max) { @@ -433,9 +466,14 @@ static int max3110_read_thread(void *_max) pr_info(PR_FMT "start read thread\n"); do { - mutex_lock(&max->thread_mutex); - max3110_console_receive(max); - mutex_unlock(&max->thread_mutex); + /* + * If can't acquire the mutex, it means the main thread + * is running which will also perform the rx job + */ + if (mutex_trylock(&max->thread_mutex)) { + max3110_con_receive(max); + mutex_unlock(&max->thread_mutex); + } set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(HZ / 20); @@ -443,7 +481,6 @@ static int max3110_read_thread(void *_max) return 0; } -#endif static int serial_m3110_startup(struct uart_port *port) { @@ -452,33 +489,54 @@ static int serial_m3110_startup(struct uart_port *port) u16 config = 0; int ret = 0; - if (port->line != 0) + if (port->line != 0) { pr_err(PR_FMT "uart port startup failed\n"); + return -1; + } - /* firstly disable all IRQ and config it to 115200, 8n1 */ + /* Disable all IRQ and config it to 115200, 8n1 */ config = WC_TAG | WC_FIFO_ENABLE | WC_1_STOPBITS | WC_8BIT_WORD | WC_BAUD_DR2; - ret = max3110_out(max, config); /* as we use thread to handle tx/rx, need set low latency */ port->state->port.tty->low_latency = 1; -#ifdef CONFIG_MRST_MAX3110_IRQ - ret = request_irq(max->irq, serial_m3110_irq, + if (max->irq) { + max->read_thread = NULL; + ret = request_irq(max->irq, serial_m3110_irq, IRQ_TYPE_EDGE_FALLING, "max3110", max); - if (ret) - return ret; + if (ret) { + max->irq = 0; + pr_err(PR_FMT "unable to allocate IRQ, polling\n"); + } else { + /* Enable RX IRQ only */ + config |= WC_RXA_IRQ_ENABLE; + } + } - /* enable RX IRQ only */ - config |= WC_RXA_IRQ_ENABLE; - max3110_out(max, config); -#else - /* if IRQ is disabled, start a read thread for input data */ - max->read_thread = - kthread_run(max3110_read_thread, max, "max3110_read"); -#endif + if (max->irq == 0) { + /* If IRQ is disabled, start a read thread for input data */ + max->read_thread = + kthread_run(max3110_read_thread, max, "max3110_read"); + if (IS_ERR(max->read_thread)) { + ret = PTR_ERR(max->read_thread); + max->read_thread = NULL; + pr_err(PR_FMT "Can't create read thread!\n"); + return ret; + } + } + + ret = max3110_out(max, config); + if (ret) { + if (max->irq) + free_irq(max->irq, max); + if (max->read_thread) + kthread_stop(max->read_thread); + max->read_thread = NULL; + return ret; + } max->cur_conf = config; return 0; @@ -495,9 +553,8 @@ static void serial_m3110_shutdown(struct uart_port *port) max->read_thread = NULL; } -#ifdef CONFIG_MRST_MAX3110_IRQ - free_irq(max->irq, max); -#endif + if (max->irq) + free_irq(max->irq, max); /* Disable interrupts from this port */ config = WC_TAG | WC_SW_SHDI; @@ -515,8 +572,7 @@ static int serial_m3110_request_port(struct uart_port *port) static void serial_m3110_config_port(struct uart_port *port, int flags) { - /* give it fake type */ - port->type = PORT_PXA; + port->type = PORT_MAX3100; } static int @@ -551,6 +607,9 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, new_conf |= WC_7BIT_WORD; break; default: + /* We only support CS7 & CS8 */ + termios->c_cflag &= ~CSIZE; + termios->c_cflag |= CS8; case CS8: cval = UART_LCR_WLEN8; new_conf |= WC_8BIT_WORD; @@ -559,7 +618,7 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, baud = uart_get_baud_rate(port, termios, old, 0, 230400); - /* first calc the div for 1.8MHZ clock case */ + /* First calc the div for 1.8MHZ clock case */ switch (baud) { case 300: clk_div = WC_BAUD_DR384; @@ -595,7 +654,7 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, if (max->clock & MAX3110_HIGH_CLK) break; default: - /* pick the previous baud rate */ + /* Pick the previous baud rate */ baud = max->baud; clk_div = max->cur_conf & WC_BAUD_DIV_MASK; tty_termios_encode_baud_rate(termios, baud, baud); @@ -603,15 +662,21 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, if (max->clock & MAX3110_HIGH_CLK) { clk_div += 1; - /* high clk version max3110 doesn't support B300 */ - if (baud == 300) + /* High clk version max3110 doesn't support B300 */ + if (baud == 300) { baud = 600; + clk_div = WC_BAUD_DR384; + } if (baud == 230400) clk_div = WC_BAUD_DR1; tty_termios_encode_baud_rate(termios, baud, baud); } new_conf = (new_conf & ~WC_BAUD_DIV_MASK) | clk_div; + + if (unlikely(termios->c_cflag & CMSPAR)) + termios->c_cflag &= ~CMSPAR; + if (termios->c_cflag & CSTOPB) new_conf |= WC_2_STOPBITS; else @@ -631,13 +696,14 @@ serial_m3110_set_termios(struct uart_port *port, struct ktermios *termios, new_conf |= WC_TAG; if (new_conf != max->cur_conf) { - max3110_out(max, new_conf); - max->cur_conf = new_conf; - max->baud = baud; + if (!max3110_out(max, new_conf)) { + max->cur_conf = new_conf; + max->baud = baud; + } } } -/* don't handle hw handshaking */ +/* Don't handle hw handshaking */ static unsigned int serial_m3110_get_mctrl(struct uart_port *port) { return TIOCM_DSR | TIOCM_CAR | TIOCM_DSR; @@ -671,7 +737,7 @@ struct uart_ops serial_m3110_ops = { .break_ctl = serial_m3110_break_ctl, .startup = serial_m3110_startup, .shutdown = serial_m3110_shutdown, - .set_termios = serial_m3110_set_termios, /* must have */ + .set_termios = serial_m3110_set_termios, .pm = serial_m3110_pm, .type = serial_m3110_type, .release_port = serial_m3110_release_port, @@ -687,52 +753,60 @@ static struct uart_driver serial_m3110_reg = { .major = TTY_MAJOR, .minor = 64, .nr = 1, - .cons = MRST_CONSOLE, + .cons = &serial_m3110_console, }; +#ifdef CONFIG_PM static int serial_m3110_suspend(struct spi_device *spi, pm_message_t state) { + struct uart_max3110 *max = spi_get_drvdata(spi); + + disable_irq(max->irq); + uart_suspend_port(&serial_m3110_reg, &max->port); + max3110_out(max, max->cur_conf | WC_SW_SHDI); return 0; } static int serial_m3110_resume(struct spi_device *spi) { + struct uart_max3110 *max = spi_get_drvdata(spi); + + max3110_out(max, max->cur_conf); + uart_resume_port(&serial_m3110_reg, &max->port); + enable_irq(max->irq); return 0; } +#else +#define serial_m3110_suspend NULL +#define serial_m3110_resume NULL +#endif -static struct dw_spi_chip spi0_uart = { - .poll_mode = 1, - .enable_dma = 0, - .type = SPI_FRF_SPI, -}; - -static int serial_m3110_probe(struct spi_device *spi) +static int __devinit serial_m3110_probe(struct spi_device *spi) { struct uart_max3110 *max; - int ret; - unsigned char *buffer; + void *buffer; u16 res; + int ret = 0; + max = kzalloc(sizeof(*max), GFP_KERNEL); if (!max) return -ENOMEM; - /* set spi info */ - spi->mode = SPI_MODE_0; + /* Set spi info */ spi->bits_per_word = 16; max->clock = MAX3110_HIGH_CLK; - spi->controller_data = &spi0_uart; spi_setup(spi); - max->port.type = PORT_PXA; /* need apply for a max3110 type */ - max->port.fifosize = 2; /* only have 16b buffer */ + max->port.type = PORT_MAX3100; + max->port.fifosize = 2; /* Only have 16b buffer */ max->port.ops = &serial_m3110_ops; max->port.line = 0; max->port.dev = &spi->dev; max->port.uartclk = 115200; max->spi = spi; - max->name = spi->modalias; /* use spi name as the name */ + strcpy(max->name, spi->modalias); max->irq = (u16)spi->irq; mutex_init(&max->thread_mutex); @@ -754,13 +828,15 @@ static int serial_m3110_probe(struct spi_device *spi) ret = -ENODEV; goto err_get_page; } - buffer = (unsigned char *)__get_free_page(GFP_KERNEL); + + buffer = (void *)__get_free_page(GFP_KERNEL); if (!buffer) { ret = -ENOMEM; goto err_get_page; } - max->con_xmit.buf = (unsigned char *)buffer; - max->con_xmit.head = max->con_xmit.tail = 0; + max->con_xmit.buf = buffer; + max->con_xmit.head = 0; + max->con_xmit.tail = 0; max->main_thread = kthread_run(max3110_main_thread, max, "max3110_main"); @@ -769,8 +845,10 @@ static int serial_m3110_probe(struct spi_device *spi) goto err_kthread; } + spi_set_drvdata(spi, max); pmax = max; - /* give membase a psudo value to pass serial_core's check */ + + /* Give membase a psudo value to pass serial_core's check */ max->port.membase = (void *)0xff110000; uart_add_one_port(&serial_m3110_reg, &max->port); @@ -779,19 +857,17 @@ static int serial_m3110_probe(struct spi_device *spi) err_kthread: free_page((unsigned long)buffer); err_get_page: - pmax = NULL; kfree(max); return ret; } -static int max3110_remove(struct spi_device *dev) +static int __devexit serial_m3110_remove(struct spi_device *dev) { - struct uart_max3110 *max = pmax; + struct uart_max3110 *max = spi_get_drvdata(dev); - if (!pmax) + if (!max) return 0; - pmax = NULL; uart_remove_one_port(&serial_m3110_reg, &max->port); free_page((unsigned long)max->con_xmit.buf); @@ -810,13 +886,12 @@ static struct spi_driver uart_max3110_driver = { .owner = THIS_MODULE, }, .probe = serial_m3110_probe, - .remove = __devexit_p(max3110_remove), + .remove = __devexit_p(serial_m3110_remove), .suspend = serial_m3110_suspend, .resume = serial_m3110_resume, }; - -int __init serial_m3110_init(void) +static int __init serial_m3110_init(void) { int ret = 0; @@ -831,7 +906,7 @@ int __init serial_m3110_init(void) return ret; } -void __exit serial_m3110_exit(void) +static void __exit serial_m3110_exit(void) { spi_unregister_driver(&uart_max3110_driver); uart_unregister_driver(&serial_m3110_reg); @@ -840,5 +915,5 @@ void __exit serial_m3110_exit(void) module_init(serial_m3110_init); module_exit(serial_m3110_exit); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); MODULE_ALIAS("max3110-uart"); diff --git a/drivers/serial/mrst_max3110.h b/drivers/serial/mrst_max3110.h index 363478a..d1ef43a 100644 --- a/drivers/serial/mrst_max3110.h +++ b/drivers/serial/mrst_max3110.h @@ -56,4 +56,5 @@ #define WC_BAUD_DR192 (0xE) #define WC_BAUD_DR384 (0xF) +#define M3110_RX_FIFO_DEPTH 8 #endif diff --git a/drivers/serial/samsung.c b/drivers/serial/samsung.c index b1156ba..7ac2bf5 100644 --- a/drivers/serial/samsung.c +++ b/drivers/serial/samsung.c @@ -1101,7 +1101,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport, dbg("resource %p (%lx..%lx)\n", res, res->start, res->end); port->mapbase = res->start; - port->membase = S3C_VA_UART + res->start - (S3C_PA_UART & 0xfff00000); + port->membase = S3C_VA_UART + (res->start & 0xfffff); ret = platform_get_irq(platdev, 0); if (ret < 0) port->irq = 0; diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index cd85112..c4ea146 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1074,10 +1074,10 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg) * NB: both 1->0 and 0->1 transitions are counted except for * RI where only 0->1 is counted. */ -static int uart_get_count(struct uart_state *state, - struct serial_icounter_struct __user *icnt) +static int uart_get_icount(struct tty_struct *tty, + struct serial_icounter_struct *icount) { - struct serial_icounter_struct icount; + struct uart_state *state = tty->driver_data; struct uart_icount cnow; struct uart_port *uport = state->uart_port; @@ -1085,19 +1085,19 @@ static int uart_get_count(struct uart_state *state, memcpy(&cnow, &uport->icount, sizeof(struct uart_icount)); spin_unlock_irq(&uport->lock); - icount.cts = cnow.cts; - icount.dsr = cnow.dsr; - icount.rng = cnow.rng; - icount.dcd = cnow.dcd; - icount.rx = cnow.rx; - icount.tx = cnow.tx; - icount.frame = cnow.frame; - icount.overrun = cnow.overrun; - icount.parity = cnow.parity; - icount.brk = cnow.brk; - icount.buf_overrun = cnow.buf_overrun; + icount->cts = cnow.cts; + icount->dsr = cnow.dsr; + icount->rng = cnow.rng; + icount->dcd = cnow.dcd; + icount->rx = cnow.rx; + icount->tx = cnow.tx; + icount->frame = cnow.frame; + icount->overrun = cnow.overrun; + icount->parity = cnow.parity; + icount->brk = cnow.brk; + icount->buf_overrun = cnow.buf_overrun; - return copy_to_user(icnt, &icount, sizeof(icount)) ? -EFAULT : 0; + return 0; } /* @@ -1150,10 +1150,6 @@ uart_ioctl(struct tty_struct *tty, struct file *filp, unsigned int cmd, case TIOCMIWAIT: ret = uart_wait_modem_status(state, arg); break; - - case TIOCGICOUNT: - ret = uart_get_count(state, uarg); - break; } if (ret != -ENOIOCTLCMD) @@ -2065,7 +2061,19 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) /* * Re-enable the console device after suspending. */ - if (uart_console(uport)) { + if (console_suspend_enabled && uart_console(uport)) { + /* + * First try to use the console cflag setting. + */ + memset(&termios, 0, sizeof(struct ktermios)); + termios.c_cflag = uport->cons->cflag; + + /* + * If that's unset, use the tty termios setting. + */ + if (port->tty && port->tty->termios && termios.c_cflag == 0) + termios = *(port->tty->termios); + uart_change_pm(state, 0); uport->ops->set_termios(uport, &termios, NULL); console_start(uport->cons); @@ -2283,6 +2291,7 @@ static const struct tty_operations uart_ops = { #endif .tiocmget = uart_tiocmget, .tiocmset = uart_tiocmset, + .get_icount = uart_get_icount, #ifdef CONFIG_CONSOLE_POLL .poll_init = uart_poll_init, .poll_get_char = uart_poll_get_char, diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c index 7d475b2..93760b2 100644 --- a/drivers/serial/serial_cs.c +++ b/drivers/serial/serial_cs.c @@ -45,7 +45,6 @@ #include <asm/io.h> #include <asm/system.h> -#include <pcmcia/cs.h> #include <pcmcia/cistpl.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> @@ -183,10 +182,8 @@ static void quirk_config_socket(struct pcmcia_device *link) { struct serial_info *info = link->priv; - if (info->multi) { - link->conf.Present |= PRESENT_EXT_STATUS; - link->conf.ExtStatus = ESR_REQ_ATTN_ENA; - } + if (info->multi) + link->config_flags |= CONF_ENABLE_ESR; } static const struct serial_quirk quirks[] = { @@ -265,13 +262,6 @@ static const struct serial_quirk quirks[] = { static int serial_config(struct pcmcia_device * link); -/*====================================================================== - - After a card is removed, serial_remove() will unregister - the serial device(s), and release the PCMCIA configuration. - -======================================================================*/ - static void serial_remove(struct pcmcia_device *link) { struct serial_info *info = link->priv; @@ -314,14 +304,6 @@ static int serial_resume(struct pcmcia_device *link) return 0; } -/*====================================================================== - - serial_attach() creates an "instance" of the driver, allocating - local data structures for one device. The device is registered - with Card Services. - -======================================================================*/ - static int serial_probe(struct pcmcia_device *link) { struct serial_info *info; @@ -335,25 +317,13 @@ static int serial_probe(struct pcmcia_device *link) info->p_dev = link; link->priv = info; - link->conf.Attributes = CONF_ENABLE_IRQ; - if (do_sound) { - link->conf.Attributes |= CONF_ENABLE_SPKR; - link->conf.Status = CCSR_AUDIO_ENA; - } - link->conf.IntType = INT_MEMORY_AND_IO; + link->config_flags |= CONF_ENABLE_IRQ; + if (do_sound) + link->config_flags |= CONF_ENABLE_SPKR; return serial_config(link); } -/*====================================================================== - - This deletes a driver "instance". The device is de-registered - with Card Services. If it has been released, all local data - structures are freed. Otherwise, the structures will be freed - when the device is released. - -======================================================================*/ - static void serial_detach(struct pcmcia_device *link) { struct serial_info *info = link->priv; @@ -361,11 +331,6 @@ static void serial_detach(struct pcmcia_device *link) dev_dbg(&link->dev, "serial_detach\n"); /* - * Ensure any outstanding scheduled tasks are completed. - */ - flush_scheduled_work(); - - /* * Ensure that the ports have been released. */ serial_remove(link); @@ -430,47 +395,45 @@ static int pfc_config(struct pcmcia_device *p_dev) return -ENODEV; } -static int simple_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int simple_config_check(struct pcmcia_device *p_dev, void *priv_data) { static const int size_table[2] = { 8, 16 }; int *try = priv_data; - if (cf->vpp1.present & (1 << CISTPL_POWER_VNOM)) - p_dev->conf.Vpp = - cf->vpp1.param[CISTPL_POWER_VNOM] / 10000; + if (p_dev->resource[0]->start == 0) + return -ENODEV; - p_dev->io_lines = ((*try & 0x1) == 0) ? - 16 : cf->io.flags & CISTPL_IO_LINES_MASK; + if ((*try & 0x1) == 0) + p_dev->io_lines = 16; - if ((cf->io.nwin > 0) && (cf->io.win[0].len == size_table[(*try >> 1)]) - && (cf->io.win[0].base != 0)) { - p_dev->resource[0]->start = cf->io.win[0].base; - if (!pcmcia_request_io(p_dev)) - return 0; - } - return -EINVAL; + if (p_dev->resource[0]->end != size_table[(*try >> 1)]) + return -ENODEV; + + p_dev->resource[0]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + return pcmcia_request_io(p_dev); } static int simple_config_check_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { static const unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 }; int j; - if ((cf->io.nwin > 0) && ((cf->io.flags & CISTPL_IO_LINES_MASK) <= 3)) { - for (j = 0; j < 5; j++) { - p_dev->resource[0]->start = base[j]; - p_dev->io_lines = base[j] ? 16 : 3; - if (!pcmcia_request_io(p_dev)) - return 0; - } + if (p_dev->io_lines > 3) + return -ENODEV; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = 8; + + for (j = 0; j < 5; j++) { + p_dev->resource[0]->start = base[j]; + p_dev->io_lines = base[j] ? 16 : 3; + if (!pcmcia_request_io(p_dev)) + return 0; } return -ENODEV; } @@ -480,11 +443,9 @@ static int simple_config(struct pcmcia_device *link) struct serial_info *info = link->priv; int i = -ENODEV, try; - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = 8; - /* First pass: look for a config entry that looks normal. * Two tries: without IO aliases, then with aliases */ + link->config_flags |= CONF_AUTO_SET_VPP | CONF_AUTO_SET_IO; for (try = 0; try < 4; try++) if (!pcmcia_loop_config(link, simple_config_check, &try)) goto found_port; @@ -500,7 +461,7 @@ static int simple_config(struct pcmcia_device *link) found_port: if (info->multi && (info->manfid == MANFID_3COM)) - link->conf.ConfigIndex &= ~(0x08); + link->config_index &= ~(0x08); /* * Apply any configuration quirks. @@ -508,51 +469,50 @@ found_port: if (info->quirk && info->quirk->config) info->quirk->config(link); - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) return -1; return setup_serial(link, info, link->resource[0]->start, link->irq); } -static int multi_config_check(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int multi_config_check(struct pcmcia_device *p_dev, void *priv_data) { - int *base2 = priv_data; + int *multi = priv_data; + + if (p_dev->resource[1]->end) + return -EINVAL; /* The quad port cards have bad CIS's, so just look for a window larger than 8 ports and assume it will be right */ - if ((cf->io.nwin == 1) && (cf->io.win[0].len > 8)) { - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; - if (!pcmcia_request_io(p_dev)) { - *base2 = p_dev->resource[0]->start + 8; - return 0; - } - } - return -ENODEV; + if (p_dev->resource[0]->end <= 8) + return -EINVAL; + + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + p_dev->resource[0]->end = *multi * 8; + + if (pcmcia_request_io(p_dev)) + return -ENODEV; + return 0; } static int multi_config_check_notpicky(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, void *priv_data) { int *base2 = priv_data; - if (cf->io.nwin == 2) { - p_dev->resource[0]->start = cf->io.win[0].base; - p_dev->resource[1]->start = cf->io.win[1].base; - p_dev->io_lines = cf->io.flags & CISTPL_IO_LINES_MASK; - if (!pcmcia_request_io(p_dev)) { - *base2 = p_dev->resource[1]->start; - return 0; - } - } - return -ENODEV; + if (!p_dev->resource[0]->end || !p_dev->resource[1]->end) + return -ENODEV; + + p_dev->resource[0]->end = p_dev->resource[1]->end = 8; + p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; + p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; + + if (pcmcia_request_io(p_dev)) + return -ENODEV; + + *base2 = p_dev->resource[0]->start + 8; + return 0; } static int multi_config(struct pcmcia_device *link) @@ -560,12 +520,12 @@ static int multi_config(struct pcmcia_device *link) struct serial_info *info = link->priv; int i, base2 = 0; + link->config_flags |= CONF_AUTO_SET_IO; /* First, look for a generic full-sized window */ - link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; - link->resource[0]->end = info->multi * 8; - if (pcmcia_loop_config(link, multi_config_check, &base2)) { + if (!pcmcia_loop_config(link, multi_config_check, &info->multi)) + base2 = link->resource[0]->start + 8; + else { /* If that didn't work, look for two windows */ - link->resource[0]->end = link->resource[1]->end = 8; info->multi = 2; if (pcmcia_loop_config(link, multi_config_check_notpicky, &base2)) { @@ -584,7 +544,7 @@ static int multi_config(struct pcmcia_device *link) if (info->quirk && info->quirk->config) info->quirk->config(link); - i = pcmcia_request_configuration(link, &link->conf); + i = pcmcia_enable_device(link); if (i != 0) return -ENODEV; @@ -596,11 +556,11 @@ static int multi_config(struct pcmcia_device *link) info->prodid == PRODID_POSSIO_GCC)) { int err; - if (link->conf.ConfigIndex == 1 || - link->conf.ConfigIndex == 3) { + if (link->config_index == 1 || + link->config_index == 3) { err = setup_serial(link, info, base2, link->irq); - base2 = link->resource[0]->start;; + base2 = link->resource[0]->start; } else { err = setup_serial(link, info, link->resource[0]->start, link->irq); @@ -624,33 +584,24 @@ static int multi_config(struct pcmcia_device *link) return 0; } -static int serial_check_for_multi(struct pcmcia_device *p_dev, - cistpl_cftable_entry_t *cf, - cistpl_cftable_entry_t *dflt, - unsigned int vcc, - void *priv_data) +static int serial_check_for_multi(struct pcmcia_device *p_dev, void *priv_data) { struct serial_info *info = p_dev->priv; - if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0)) - info->multi = cf->io.win[0].len >> 3; + if (!p_dev->resource[0]->end) + return -EINVAL; + + if ((!p_dev->resource[1]->end) && (p_dev->resource[0]->end % 8 == 0)) + info->multi = p_dev->resource[0]->end >> 3; - if ((cf->io.nwin == 2) && (cf->io.win[0].len == 8) && - (cf->io.win[1].len == 8)) + if ((p_dev->resource[1]->end) && (p_dev->resource[0]->end == 8) + && (p_dev->resource[1]->end == 8)) info->multi = 2; return 0; /* break */ } -/*====================================================================== - - serial_config() is scheduled to run after a CARD_INSERTION event - is received, to configure the PCMCIA socket, and to make the - serial device available to the system. - -======================================================================*/ - static int serial_config(struct pcmcia_device * link) { struct serial_info *info = link->priv; @@ -894,9 +845,7 @@ MODULE_FIRMWARE("cis/RS-COM-2P.cis"); static struct pcmcia_driver serial_cs_driver = { .owner = THIS_MODULE, - .drv = { - .name = "serial_cs", - }, + .name = "serial_cs", .probe = serial_probe, .remove = serial_detach, .id_table = serial_ids, diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c index 9b03d7b..c4bf54b 100644 --- a/drivers/serial/uartlite.c +++ b/drivers/serial/uartlite.c @@ -322,6 +322,26 @@ static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser) return -EINVAL; } +#ifdef CONFIG_CONSOLE_POLL +static int ulite_get_poll_char(struct uart_port *port) +{ + if (!(ioread32be(port->membase + ULITE_STATUS) + & ULITE_STATUS_RXVALID)) + return NO_POLL_CHAR; + + return ioread32be(port->membase + ULITE_RX); +} + +static void ulite_put_poll_char(struct uart_port *port, unsigned char ch) +{ + while (ioread32be(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL) + cpu_relax(); + + /* write char to device */ + iowrite32be(ch, port->membase + ULITE_TX); +} +#endif + static struct uart_ops ulite_ops = { .tx_empty = ulite_tx_empty, .set_mctrl = ulite_set_mctrl, @@ -338,7 +358,11 @@ static struct uart_ops ulite_ops = { .release_port = ulite_release_port, .request_port = ulite_request_port, .config_port = ulite_config_port, - .verify_port = ulite_verify_port + .verify_port = ulite_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = ulite_get_poll_char, + .poll_put_char = ulite_put_poll_char, +#endif }; /* --------------------------------------------------------------------- |