diff options
author | Grant Likely <grant.likely@secretlab.ca> | 2010-05-22 10:36:56 +0400 |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2010-05-22 10:36:56 +0400 |
commit | cf9b59e9d3e008591d1f54830f570982bb307a0d (patch) | |
tree | 113478ce8fd8c832ba726ffdf59b82cb46356476 /drivers/serial/sunzilog.c | |
parent | 44504b2bebf8b5823c59484e73096a7d6574471d (diff) | |
parent | f4b87dee923342505e1ddba8d34ce9de33e75050 (diff) | |
download | linux-cf9b59e9d3e008591d1f54830f570982bb307a0d.tar.xz |
Merge remote branch 'origin' into secretlab/next-devicetree
Merging in current state of Linus' tree to deal with merge conflicts and
build failures in vio.c after merge.
Conflicts:
drivers/i2c/busses/i2c-cpm.c
drivers/i2c/busses/i2c-mpc.c
drivers/net/gianfar.c
Also fixed up one line in arch/powerpc/kernel/vio.c to use the
correct node pointer.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/serial/sunzilog.c')
-rw-r--r-- | drivers/serial/sunzilog.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c index 34fb8e84504f..f9a24f4ebb34 100644 --- a/drivers/serial/sunzilog.c +++ b/drivers/serial/sunzilog.c @@ -102,6 +102,8 @@ struct uart_sunzilog_port { #endif }; +static void sunzilog_putchar(struct uart_port *port, int ch); + #define ZILOG_CHANNEL_FROM_PORT(PORT) ((struct zilog_channel __iomem *)((PORT)->membase)) #define UART_ZILOG(PORT) ((struct uart_sunzilog_port *)(PORT)) @@ -996,6 +998,50 @@ static int sunzilog_verify_port(struct uart_port *port, struct serial_struct *se return -EINVAL; } +#ifdef CONFIG_CONSOLE_POLL +static int sunzilog_get_poll_char(struct uart_port *port) +{ + unsigned char ch, r1; + struct uart_sunzilog_port *up = (struct uart_sunzilog_port *) port; + struct zilog_channel __iomem *channel + = ZILOG_CHANNEL_FROM_PORT(&up->port); + + + r1 = read_zsreg(channel, R1); + if (r1 & (PAR_ERR | Rx_OVR | CRC_ERR)) { + writeb(ERR_RES, &channel->control); + ZSDELAY(); + ZS_WSYNC(channel); + } + + ch = readb(&channel->control); + ZSDELAY(); + + /* This funny hack depends upon BRK_ABRT not interfering + * with the other bits we care about in R1. + */ + if (ch & BRK_ABRT) + r1 |= BRK_ABRT; + + if (!(ch & Rx_CH_AV)) + return NO_POLL_CHAR; + + ch = readb(&channel->data); + ZSDELAY(); + + ch &= up->parity_mask; + return ch; +} + +static void sunzilog_put_poll_char(struct uart_port *port, + unsigned char ch) +{ + struct uart_sunzilog_port *up = (struct uart_sunzilog_port *)port; + + sunzilog_putchar(&up->port, ch); +} +#endif /* CONFIG_CONSOLE_POLL */ + static struct uart_ops sunzilog_pops = { .tx_empty = sunzilog_tx_empty, .set_mctrl = sunzilog_set_mctrl, @@ -1013,6 +1059,10 @@ static struct uart_ops sunzilog_pops = { .request_port = sunzilog_request_port, .config_port = sunzilog_config_port, .verify_port = sunzilog_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = sunzilog_get_poll_char, + .poll_put_char = sunzilog_put_poll_char, +#endif }; static int uart_chip_count; |