diff options
author | Finn Thain <fthain@telegraphics.com.au> | 2009-11-17 12:04:44 +0300 |
---|---|---|
committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2010-02-27 20:31:02 +0300 |
commit | ec9cbe09899e36b5f216c3232215520dcf0320ab (patch) | |
tree | 7960e72bdad982d7dd18cab1e49ae3ca42d1a5a0 /drivers/serial/pmac_zilog.c | |
parent | 1f7b5fff505232521a7a770a639b63cd17636549 (diff) | |
download | linux-ec9cbe09899e36b5f216c3232215520dcf0320ab.tar.xz |
pmac-zilog: add platform driver
Add platform driver support to the pmac-zilog driver, for m68k macs.
Place the powermac-specific code inside #ifdef CONFIG_PPC_PMAC.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'drivers/serial/pmac_zilog.c')
-rw-r--r-- | drivers/serial/pmac_zilog.c | 155 |
1 files changed, 136 insertions, 19 deletions
diff --git a/drivers/serial/pmac_zilog.c b/drivers/serial/pmac_zilog.c index 1c8afd98e14e..f020de1cdd50 100644 --- a/drivers/serial/pmac_zilog.c +++ b/drivers/serial/pmac_zilog.c @@ -63,11 +63,17 @@ #include <asm/sections.h> #include <asm/io.h> #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> #include <asm/macio.h> +#else +#include <linux/platform_device.h> +#define of_machine_is_compatible(x) (0) +#endif #if defined (CONFIG_SERIAL_PMACZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) #define SUPPORT_SYSRQ @@ -83,11 +89,9 @@ 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 PowerMac serial ports."); +MODULE_DESCRIPTION("Driver for the Mac and PowerMac serial ports."); MODULE_LICENSE("GPL"); -#define PWRDBG(fmt, arg...) printk(KERN_DEBUG fmt , ## arg) - #ifdef CONFIG_SERIAL_PMACZILOG_TTYS #define PMACZILOG_MAJOR TTY_MAJOR #define PMACZILOG_MINOR 64 @@ -341,7 +345,7 @@ static struct tty_struct *pmz_receive_chars(struct uart_pmac_port *uap) uap->curregs[R1] &= ~(EXT_INT_ENAB | TxINT_ENAB | RxINT_MASK); write_zsreg(uap, R1, uap->curregs[R1]); zssync(uap); - dev_err(&uap->dev->ofdev.dev, "pmz: rx irq flood !\n"); + pmz_error("pmz: rx irq flood !\n"); return tty; } @@ -757,6 +761,8 @@ static void pmz_break_ctl(struct uart_port *port, int break_state) spin_unlock_irqrestore(&port->lock, flags); } +#ifdef CONFIG_PPC_PMAC + /* * Turn power on or off to the SCC and associated stuff * (port drivers, modem, IR port, etc.) @@ -792,6 +798,15 @@ static int pmz_set_scc_power(struct uart_pmac_port *uap, int state) return delay; } +#else + +static int pmz_set_scc_power(struct uart_pmac_port *uap, int state) +{ + return 0; +} + +#endif /* !CONFIG_PPC_PMAC */ + /* * FixZeroBug....Works around a bug in the SCC receving channel. * Inspired from Darwin code, 15 Sept. 2000 -DanM @@ -954,9 +969,9 @@ static int pmz_startup(struct uart_port *port) } pmz_get_port_A(uap)->flags |= PMACZILOG_FLAG_IS_IRQ_ON; - if (request_irq(uap->port.irq, pmz_interrupt, IRQF_SHARED, "PowerMac Zilog", uap)) { - dev_err(&uap->dev->ofdev.dev, - "Unable to register zs interrupt handler.\n"); + if (request_irq(uap->port.irq, pmz_interrupt, IRQF_SHARED, + "SCC", uap)) { + pmz_error("Unable to register zs interrupt handler.\n"); pmz_set_scc_power(uap, 0); mutex_unlock(&pmz_irq_mutex); return -ENXIO; @@ -1196,7 +1211,7 @@ static void pmz_irda_setup(struct uart_pmac_port *uap, unsigned long *baud) while ((read_zsreg(uap, R0) & Tx_BUF_EMP) == 0 || (read_zsreg(uap, R1) & ALL_SNT) == 0) { if (--t <= 0) { - dev_err(&uap->dev->ofdev.dev, "transmitter didn't drain\n"); + pmz_error("transmitter didn't drain\n"); return; } udelay(10); @@ -1212,7 +1227,7 @@ static void pmz_irda_setup(struct uart_pmac_port *uap, unsigned long *baud) read_zsdata(uap); mdelay(10); if (--t <= 0) { - dev_err(&uap->dev->ofdev.dev, "receiver didn't drain\n"); + pmz_error("receiver didn't drain\n"); return; } } @@ -1233,8 +1248,7 @@ static void pmz_irda_setup(struct uart_pmac_port *uap, unsigned long *baud) t = 5000; while ((read_zsreg(uap, R0) & Rx_CH_AV) == 0) { if (--t <= 0) { - dev_err(&uap->dev->ofdev.dev, - "irda_setup timed out on get_version byte\n"); + pmz_error("irda_setup timed out on get_version byte\n"); goto out; } udelay(10); @@ -1242,8 +1256,7 @@ static void pmz_irda_setup(struct uart_pmac_port *uap, unsigned long *baud) version = read_zsdata(uap); if (version < 4) { - dev_info(&uap->dev->ofdev.dev, "IrDA: dongle version %d not supported\n", - version); + pmz_info("IrDA: dongle version %d not supported\n", version); goto out; } @@ -1252,18 +1265,16 @@ static void pmz_irda_setup(struct uart_pmac_port *uap, unsigned long *baud) t = 5000; while ((read_zsreg(uap, R0) & Rx_CH_AV) == 0) { if (--t <= 0) { - dev_err(&uap->dev->ofdev.dev, - "irda_setup timed out on speed mode byte\n"); + pmz_error("irda_setup timed out on speed mode byte\n"); goto out; } udelay(10); } t = read_zsdata(uap); if (t != cmdbyte) - dev_err(&uap->dev->ofdev.dev, - "irda_setup speed mode byte = %x (%x)\n", t, cmdbyte); + pmz_error("irda_setup speed mode byte = %x (%x)\n", t, cmdbyte); - dev_info(&uap->dev->ofdev.dev, "IrDA setup for %ld bps, dongle version: %d\n", + pmz_info("IrDA setup for %ld bps, dongle version: %d\n", *baud, version); (void)read_zsdata(uap); @@ -1413,7 +1424,7 @@ static void pmz_poll_put_char(struct uart_port *port, unsigned char c) write_zsdata(uap, c); } -#endif +#endif /* CONFIG_CONSOLE_POLL */ static struct uart_ops pmz_pops = { .tx_empty = pmz_tx_empty, @@ -1438,6 +1449,8 @@ static struct uart_ops pmz_pops = { #endif }; +#ifdef CONFIG_PPC_PMAC + /* * Setup one port structure after probing, HW is down at this point, * Unlike sunzilog, we don't need to pre-init the spinlock as we don't @@ -1834,6 +1847,88 @@ next: return 0; } +#else + +extern struct platform_device scc_a_pdev, scc_b_pdev; + +static int __init pmz_init_port(struct uart_pmac_port *uap) +{ + struct resource *r_ports; + int irq; + + r_ports = platform_get_resource(uap->node, IORESOURCE_MEM, 0); + irq = platform_get_irq(uap->node, 0); + if (!r_ports || !irq) + return -ENODEV; + + uap->port.mapbase = r_ports->start; + uap->port.membase = (unsigned char __iomem *) r_ports->start; + uap->port.iotype = UPIO_MEM; + uap->port.irq = irq; + uap->port.uartclk = ZS_CLOCK; + uap->port.fifosize = 1; + uap->port.ops = &pmz_pops; + uap->port.type = PORT_PMAC_ZILOG; + uap->port.flags = 0; + + uap->control_reg = uap->port.membase; + uap->data_reg = uap->control_reg + 4; + uap->port_type = 0; + + pmz_convert_to_zs(uap, CS8, 0, 9600); + + return 0; +} + +static int __init pmz_probe(void) +{ + int err; + + pmz_ports_count = 0; + + pmz_ports[0].mate = &pmz_ports[1]; + pmz_ports[0].port.line = 0; + pmz_ports[0].flags = PMACZILOG_FLAG_IS_CHANNEL_A; + pmz_ports[0].node = &scc_a_pdev; + err = pmz_init_port(&pmz_ports[0]); + if (err) + return err; + pmz_ports_count++; + + pmz_ports[1].mate = &pmz_ports[0]; + pmz_ports[1].port.line = 1; + pmz_ports[1].flags = 0; + pmz_ports[1].node = &scc_b_pdev; + err = pmz_init_port(&pmz_ports[1]); + if (err) + return err; + pmz_ports_count++; + + return 0; +} + +static void pmz_dispose_port(struct uart_pmac_port *uap) +{ + memset(uap, 0, sizeof(struct uart_pmac_port)); +} + +static int __init pmz_attach(struct platform_device *pdev) +{ + int i; + + for (i = 0; i < pmz_ports_count; i++) + if (pmz_ports[i].node == pdev) + return 0; + return -ENODEV; +} + +static int __exit pmz_detach(struct platform_device *pdev) +{ + return 0; +} + +#endif /* !CONFIG_PPC_PMAC */ + #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE static void pmz_console_write(struct console *con, const char *s, unsigned int count); @@ -1894,6 +1989,8 @@ err_out: return rc; } +#ifdef CONFIG_PPC_PMAC + static struct of_device_id pmz_match[] = { { @@ -1915,6 +2012,18 @@ static struct macio_driver pmz_driver = { .resume = pmz_resume, }; +#else + +static struct platform_driver pmz_driver = { + .remove = __exit_p(pmz_detach), + .driver = { + .name = "scc", + .owner = THIS_MODULE, + }, +}; + +#endif /* !CONFIG_PPC_PMAC */ + static int __init init_pmz(void) { int rc, i; @@ -1953,15 +2062,23 @@ static int __init init_pmz(void) /* * Then we register the macio driver itself */ +#ifdef CONFIG_PPC_PMAC return macio_register_driver(&pmz_driver); +#else + return platform_driver_probe(&pmz_driver, pmz_attach); +#endif } static void __exit exit_pmz(void) { int i; +#ifdef CONFIG_PPC_PMAC /* Get rid of macio-driver (detach from macio) */ macio_unregister_driver(&pmz_driver); +#else + platform_driver_unregister(&pmz_driver); +#endif for (i = 0; i < pmz_ports_count; i++) { struct uart_pmac_port *uport = &pmz_ports[i]; |