forked from luck/tmp_suning_uos_patched
[SERIAL] sunsab: Convert to of_driver framework.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
David S. Miller
parent
9efc3715f7
commit
c4d37215a8
@ -1,7 +1,7 @@
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/* sunsab.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.
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*
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* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
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* Copyright (C) 2002 David S. Miller (davem@redhat.com)
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* Copyright (C) 2002, 2006 David S. Miller (davem@davemloft.net)
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*
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* Rewrote buffer handling to use CIRC(Circular Buffer) macros.
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* Maxim Krasnyanskiy <maxk@qualcomm.com>
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@ -12,7 +12,7 @@
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* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
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*
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* Ported to new 2.5.x UART layer.
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* David S. Miller <davem@redhat.com>
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* David S. Miller <davem@davemloft.net>
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*/
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#include <linux/config.h>
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@ -37,8 +37,8 @@
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/oplib.h>
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#include <asm/ebus.h>
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#include <asm/prom.h>
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#include <asm/of_device.h>
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#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
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#define SUPPORT_SYSRQ
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@ -976,199 +976,188 @@ static inline struct console *SUNSAB_CONSOLE(void)
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#define sunsab_console_init() do { } while (0)
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#endif
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static void __init for_each_sab_edev(void (*callback)(struct linux_ebus_device *, void *), void *arg)
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static int __init sunsab_init_one(struct uart_sunsab_port *up,
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struct of_device *op,
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unsigned long offset,
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int line)
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{
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struct linux_ebus *ebus;
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struct linux_ebus_device *edev = NULL;
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up->port.line = line;
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up->port.dev = &op->dev;
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for_each_ebus(ebus) {
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for_each_ebusdev(edev, ebus) {
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if (!strcmp(edev->prom_node->name, "se")) {
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callback(edev, arg);
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continue;
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} else if (!strcmp(edev->prom_node->name, "serial")) {
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char *compat;
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int clen;
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up->port.mapbase = op->resource[0].start + offset;
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up->port.membase = of_ioremap(&op->resource[0], offset,
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sizeof(union sab82532_async_regs),
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"sab");
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if (!up->port.membase)
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return -ENOMEM;
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up->regs = (union sab82532_async_regs __iomem *) up->port.membase;
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/* On RIO this can be an SE, check it. We could
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* just check ebus->is_rio, but this is more portable.
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*/
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compat = of_get_property(edev->prom_node,
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"compatible", &clen);
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if (compat && clen > 0) {
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if (strncmp(compat, "sab82532", 8) == 0) {
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callback(edev, arg);
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continue;
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}
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}
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}
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up->port.irq = op->irqs[0];
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up->port.fifosize = SAB82532_XMIT_FIFO_SIZE;
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up->port.iotype = UPIO_MEM;
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writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
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up->port.ops = &sunsab_pops;
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up->port.type = PORT_SUNSAB;
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up->port.uartclk = SAB_BASE_BAUD;
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up->type = readb(&up->regs->r.vstr) & 0x0f;
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writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &up->regs->w.pcr);
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writeb(0xff, &up->regs->w.pim);
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if ((up->port.line & 0x1) == 0) {
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up->pvr_dsr_bit = (1 << 0);
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up->pvr_dtr_bit = (1 << 1);
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} else {
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up->pvr_dsr_bit = (1 << 3);
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up->pvr_dtr_bit = (1 << 2);
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}
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up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
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writeb(up->cached_pvr, &up->regs->w.pvr);
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up->cached_mode = readb(&up->regs->rw.mode);
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up->cached_mode |= SAB82532_MODE_FRTS;
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writeb(up->cached_mode, &up->regs->rw.mode);
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up->cached_mode |= SAB82532_MODE_RTS;
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writeb(up->cached_mode, &up->regs->rw.mode);
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up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
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up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
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if (!(up->port.line & 0x01)) {
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int err;
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err = request_irq(up->port.irq, sunsab_interrupt,
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SA_SHIRQ, "sab", up);
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if (err) {
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of_iounmap(up->port.membase,
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sizeof(union sab82532_async_regs));
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return err;
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}
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}
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}
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static void __init sab_count_callback(struct linux_ebus_device *edev, void *arg)
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{
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int *count_p = arg;
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(*count_p)++;
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}
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static void __init sab_attach_callback(struct linux_ebus_device *edev, void *arg)
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{
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int *instance_p = arg;
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struct uart_sunsab_port *up;
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unsigned long regs, offset;
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int i;
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/* Note: ports are located in reverse order */
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regs = edev->resource[0].start;
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offset = sizeof(union sab82532_async_regs);
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for (i = 0; i < 2; i++) {
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up = &sunsab_ports[(*instance_p * 2) + 1 - i];
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memset(up, 0, sizeof(*up));
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up->regs = ioremap(regs + offset, sizeof(union sab82532_async_regs));
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up->port.irq = edev->irqs[0];
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up->port.fifosize = SAB82532_XMIT_FIFO_SIZE;
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up->port.mapbase = (unsigned long)up->regs;
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up->port.iotype = UPIO_MEM;
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writeb(SAB82532_IPC_IC_ACT_LOW, &up->regs->w.ipc);
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offset -= sizeof(union sab82532_async_regs);
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}
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(*instance_p)++;
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}
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static int __init probe_for_sabs(void)
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{
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int this_sab = 0;
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/* Find device instances. */
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for_each_sab_edev(&sab_count_callback, &this_sab);
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if (!this_sab)
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return -ENODEV;
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/* Allocate tables. */
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sunsab_ports = kmalloc(sizeof(struct uart_sunsab_port) * this_sab * 2,
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GFP_KERNEL);
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if (!sunsab_ports)
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return -ENOMEM;
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num_channels = this_sab * 2;
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this_sab = 0;
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for_each_sab_edev(&sab_attach_callback, &this_sab);
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return 0;
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}
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static void __init sunsab_init_hw(void)
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static int __devinit sab_probe(struct of_device *op, const struct of_device_id *match)
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{
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int i;
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static int inst;
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struct uart_sunsab_port *up;
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int err;
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for (i = 0; i < num_channels; i++) {
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struct uart_sunsab_port *up = &sunsab_ports[i];
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up = &sunsab_ports[inst * 2];
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up->port.line = i;
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up->port.ops = &sunsab_pops;
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up->port.type = PORT_SUNSAB;
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up->port.uartclk = SAB_BASE_BAUD;
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err = sunsab_init_one(&up[0], op,
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sizeof(union sab82532_async_regs),
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(inst * 2) + 0);
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if (err)
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return err;
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up->type = readb(&up->regs->r.vstr) & 0x0f;
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writeb(~((1 << 1) | (1 << 2) | (1 << 4)), &up->regs->w.pcr);
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writeb(0xff, &up->regs->w.pim);
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if (up->port.line == 0) {
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up->pvr_dsr_bit = (1 << 0);
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up->pvr_dtr_bit = (1 << 1);
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} else {
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up->pvr_dsr_bit = (1 << 3);
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up->pvr_dtr_bit = (1 << 2);
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}
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up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
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writeb(up->cached_pvr, &up->regs->w.pvr);
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up->cached_mode = readb(&up->regs->rw.mode);
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up->cached_mode |= SAB82532_MODE_FRTS;
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writeb(up->cached_mode, &up->regs->rw.mode);
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up->cached_mode |= SAB82532_MODE_RTS;
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writeb(up->cached_mode, &up->regs->rw.mode);
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up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
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up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
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if (!(up->port.line & 0x01)) {
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if (request_irq(up->port.irq, sunsab_interrupt,
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SA_SHIRQ, "serial(sab82532)", up)) {
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printk("sunsab%d: can't get IRQ %x\n",
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i, up->port.irq);
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continue;
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}
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}
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err = sunsab_init_one(&up[0], op, 0,
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(inst * 2) + 1);
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if (err) {
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of_iounmap(up[0].port.membase,
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sizeof(union sab82532_async_regs));
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free_irq(up[0].port.irq, &up[0]);
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return err;
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}
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uart_add_one_port(&sunsab_reg, &up[0].port);
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uart_add_one_port(&sunsab_reg, &up[1].port);
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dev_set_drvdata(&op->dev, &up[0]);
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inst++;
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return 0;
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}
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static void __devexit sab_remove_one(struct uart_sunsab_port *up)
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{
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uart_remove_one_port(&sunsab_reg, &up->port);
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if (!(up->port.line & 1))
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free_irq(up->port.irq, up);
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of_iounmap(up->port.membase,
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sizeof(union sab82532_async_regs));
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}
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static int __devexit sab_remove(struct of_device *op)
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{
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struct uart_sunsab_port *up = dev_get_drvdata(&op->dev);
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sab_remove_one(&up[0]);
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sab_remove_one(&up[1]);
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dev_set_drvdata(&op->dev, NULL);
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return 0;
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}
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static struct of_device_id sab_match[] = {
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{
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.name = "se",
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},
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{
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.name = "serial",
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.compatible = "sab82532",
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, sab_match);
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static struct of_platform_driver sab_driver = {
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.name = "sab",
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.match_table = sab_match,
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.probe = sab_probe,
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.remove = __devexit_p(sab_remove),
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};
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static int __init sunsab_init(void)
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{
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int ret = probe_for_sabs();
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int i;
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struct device_node *dp;
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int err;
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if (ret < 0)
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return ret;
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num_channels = 0;
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for_each_node_by_name(dp, "su")
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num_channels += 2;
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for_each_node_by_name(dp, "serial") {
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if (of_device_is_compatible(dp, "sab82532"))
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num_channels += 2;
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}
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sunsab_init_hw();
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if (num_channels) {
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sunsab_ports = kzalloc(sizeof(struct uart_sunsab_port) *
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num_channels, GFP_KERNEL);
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if (!sunsab_ports)
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return -ENOMEM;
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sunsab_reg.minor = sunserial_current_minor;
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sunsab_reg.nr = num_channels;
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sunsab_reg.minor = sunserial_current_minor;
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sunsab_reg.nr = num_channels;
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ret = uart_register_driver(&sunsab_reg);
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if (ret < 0) {
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int i;
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err = uart_register_driver(&sunsab_reg);
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if (err) {
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kfree(sunsab_ports);
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sunsab_ports = NULL;
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for (i = 0; i < num_channels; i++) {
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struct uart_sunsab_port *up = &sunsab_ports[i];
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if (!(up->port.line & 0x01))
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free_irq(up->port.irq, up);
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iounmap(up->regs);
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return err;
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}
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kfree(sunsab_ports);
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sunsab_ports = NULL;
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return ret;
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sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
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sunsab_reg.cons = SUNSAB_CONSOLE();
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sunserial_current_minor += num_channels;
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}
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sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
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sunsab_reg.cons = SUNSAB_CONSOLE();
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sunserial_current_minor += num_channels;
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for (i = 0; i < num_channels; i++) {
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struct uart_sunsab_port *up = &sunsab_ports[i];
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uart_add_one_port(&sunsab_reg, &up->port);
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}
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return 0;
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return of_register_driver(&sab_driver, &of_bus_type);
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}
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static void __exit sunsab_exit(void)
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{
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int i;
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for (i = 0; i < num_channels; i++) {
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struct uart_sunsab_port *up = &sunsab_ports[i];
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uart_remove_one_port(&sunsab_reg, &up->port);
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if (!(up->port.line & 0x01))
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free_irq(up->port.irq, up);
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iounmap(up->regs);
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of_unregister_driver(&sab_driver);
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if (num_channels) {
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sunserial_current_minor -= num_channels;
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uart_unregister_driver(&sunsab_reg);
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}
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sunserial_current_minor -= num_channels;
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uart_unregister_driver(&sunsab_reg);
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kfree(sunsab_ports);
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sunsab_ports = NULL;
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}
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