diff options
Diffstat (limited to 'drivers/tty/serial/pmac_zilog.c')
| -rw-r--r-- | drivers/tty/serial/pmac_zilog.c | 69 |
1 files changed, 2 insertions, 67 deletions
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index 5d97c201ad88..3133446e806c 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -24,7 +24,6 @@ */ #undef DEBUG -#undef DEBUG_HARD #undef USE_CTRL_O_SYSRQ #include <linux/module.h> @@ -51,7 +50,6 @@ #include <asm/irq.h> #ifdef CONFIG_PPC_PMAC -#include <asm/prom.h> #include <asm/machdep.h> #include <asm/pmac_feature.h> #include <asm/dbdma.h> @@ -66,10 +64,6 @@ #include "pmac_zilog.h" -/* Not yet implemented */ -#undef HAS_DBDMA - -static char version[] __initdata = "pmac_zilog: 0.6 (Benjamin Herrenschmidt <benh@kernel.crashing.org>)"; MODULE_AUTHOR("Benjamin Herrenschmidt <benh@kernel.crashing.org>"); MODULE_DESCRIPTION("Driver for the Mac and PowerMac serial ports."); MODULE_LICENSE("GPL"); @@ -446,9 +440,6 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) spin_lock(&uap_a->port.lock); r3 = read_zsreg(uap_a, R3); -#ifdef DEBUG_HARD - pmz_debug("irq, r3: %x\n", r3); -#endif /* Channel A */ push = false; if (r3 & (CHAEXT | CHATxIP | CHARxIP)) { @@ -613,8 +604,6 @@ static void pmz_start_tx(struct uart_port *port) struct uart_pmac_port *uap = to_pmz(port); unsigned char status; - pmz_debug("pmz: start_tx()\n"); - uap->flags |= PMACZILOG_FLAG_TX_ACTIVE; uap->flags &= ~PMACZILOG_FLAG_TX_STOPPED; @@ -636,7 +625,7 @@ static void pmz_start_tx(struct uart_port *port) struct circ_buf *xmit = &port->state->xmit; if (uart_circ_empty(xmit)) - goto out; + return; write_zsdata(uap, xmit->buf[xmit->tail]); zssync(uap); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); @@ -645,8 +634,6 @@ static void pmz_start_tx(struct uart_port *port) if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(&uap->port); } - out: - pmz_debug("pmz: start_tx() done.\n"); } /* @@ -659,13 +646,9 @@ static void pmz_stop_rx(struct uart_port *port) { struct uart_pmac_port *uap = to_pmz(port); - pmz_debug("pmz: stop_rx()()\n"); - /* Disable all RX interrupts. */ uap->curregs[R1] &= ~RxINT_MASK; pmz_maybe_update_regs(uap); - - pmz_debug("pmz: stop_rx() done.\n"); } /* @@ -910,8 +893,6 @@ static int pmz_startup(struct uart_port *port) unsigned long flags; int pwr_delay = 0; - pmz_debug("pmz: startup()\n"); - uap->flags |= PMACZILOG_FLAG_IS_OPEN; /* A console is never powered down. Else, power up and @@ -947,8 +928,6 @@ static int pmz_startup(struct uart_port *port) pmz_interrupt_control(uap, 1); spin_unlock_irqrestore(&port->lock, flags); - pmz_debug("pmz: startup() done.\n"); - return 0; } @@ -957,8 +936,6 @@ static void pmz_shutdown(struct uart_port *port) struct uart_pmac_port *uap = to_pmz(port); unsigned long flags; - pmz_debug("pmz: shutdown()\n"); - spin_lock_irqsave(&port->lock, flags); /* Disable interrupt requests for the channel */ @@ -987,8 +964,6 @@ static void pmz_shutdown(struct uart_port *port) pmz_set_scc_power(uap, 0); /* Shut the chip down */ spin_unlock_irqrestore(&port->lock, flags); - - pmz_debug("pmz: shutdown() done.\n"); } /* Shared by TTY driver and serial console setup. The port lock is held @@ -1233,10 +1208,6 @@ static void __pmz_set_termios(struct uart_port *port, struct ktermios *termios, struct uart_pmac_port *uap = to_pmz(port); unsigned long baud; - pmz_debug("pmz: set_termios()\n"); - - memcpy(&uap->termios_cache, termios, sizeof(struct ktermios)); - /* XXX Check which revs of machines actually allow 1 and 4Mb speeds * on the IR dongle. Note that the IRTTY driver currently doesn't know * about the FIR mode and high speed modes. So these are unused. For @@ -1270,8 +1241,6 @@ static void __pmz_set_termios(struct uart_port *port, struct ktermios *termios, pmz_maybe_update_regs(uap); } uart_update_timeout(port, termios->c_cflag, baud); - - pmz_debug("pmz: set_termios() done.\n"); } /* The port lock is not held. */ @@ -1400,7 +1369,7 @@ static int __init pmz_init_port(struct uart_pmac_port *uap) char name[1]; } *slots; int len; - struct resource r_ports, r_rxdma, r_txdma; + struct resource r_ports; /* * Request & map chip registers @@ -1412,35 +1381,6 @@ static int __init pmz_init_port(struct uart_pmac_port *uap) uap->control_reg = uap->port.membase; uap->data_reg = uap->control_reg + 0x10; - - /* - * Request & map DBDMA registers - */ -#ifdef HAS_DBDMA - if (of_address_to_resource(np, 1, &r_txdma) == 0 && - of_address_to_resource(np, 2, &r_rxdma) == 0) - uap->flags |= PMACZILOG_FLAG_HAS_DMA; -#else - memset(&r_txdma, 0, sizeof(struct resource)); - memset(&r_rxdma, 0, sizeof(struct resource)); -#endif - if (ZS_HAS_DMA(uap)) { - uap->tx_dma_regs = ioremap(r_txdma.start, 0x100); - if (uap->tx_dma_regs == NULL) { - uap->flags &= ~PMACZILOG_FLAG_HAS_DMA; - goto no_dma; - } - uap->rx_dma_regs = ioremap(r_rxdma.start, 0x100); - if (uap->rx_dma_regs == NULL) { - iounmap(uap->tx_dma_regs); - uap->tx_dma_regs = NULL; - uap->flags &= ~PMACZILOG_FLAG_HAS_DMA; - goto no_dma; - } - uap->tx_dma_irq = irq_of_parse_and_map(np, 1); - uap->rx_dma_irq = irq_of_parse_and_map(np, 2); - } -no_dma: /* * Detect port type @@ -1506,8 +1446,6 @@ no_dma: of_device_is_compatible(np->parent->parent, "gatwick")) { /* IRQs on gatwick are offset by 64 */ uap->port.irq = irq_create_mapping(NULL, 64 + 15); - uap->tx_dma_irq = irq_create_mapping(NULL, 64 + 4); - uap->rx_dma_irq = irq_create_mapping(NULL, 64 + 5); } /* Setup some valid baud rate information in the register @@ -1527,8 +1465,6 @@ static void pmz_dispose_port(struct uart_pmac_port *uap) struct device_node *np; np = uap->node; - iounmap(uap->rx_dma_regs); - iounmap(uap->tx_dma_regs); iounmap(uap->control_reg); uap->node = NULL; of_node_put(np); @@ -1875,7 +1811,6 @@ static struct platform_driver pmz_driver = { static int __init init_pmz(void) { int rc, i; - printk(KERN_INFO "%s\n", version); /* * First, we need to do a direct OF-based probe pass. We |