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-rw-r--r--drivers/serial/8250_exar_st16c554.c52
-rw-r--r--drivers/serial/8250_pnp.c29
-rw-r--r--drivers/serial/Kconfig30
-rw-r--r--drivers/serial/Makefile2
-rw-r--r--drivers/serial/amba-pl010.c2
-rw-r--r--drivers/serial/atmel_serial.c10
-rw-r--r--drivers/serial/atmel_serial.h11
-rw-r--r--drivers/serial/cpm_uart/cpm_uart.h2
-rw-r--r--drivers/serial/cpm_uart/cpm_uart_core.c16
-rw-r--r--drivers/serial/cpm_uart/cpm_uart_cpm1.c2
-rw-r--r--drivers/serial/cpm_uart/cpm_uart_cpm2.c2
-rw-r--r--drivers/serial/dz.c371
-rw-r--r--drivers/serial/dz.h32
-rw-r--r--drivers/serial/mcfserial.c54
-rw-r--r--drivers/serial/mpc52xx_uart.c469
-rw-r--r--drivers/serial/mpsc.c22
-rw-r--r--drivers/serial/serial_cs.c67
-rw-r--r--drivers/serial/sh-sci.c6
-rw-r--r--drivers/serial/sh-sci.h37
-rw-r--r--drivers/serial/uartlite.c505
20 files changed, 1385 insertions, 336 deletions
diff --git a/drivers/serial/8250_exar_st16c554.c b/drivers/serial/8250_exar_st16c554.c
new file mode 100644
index 000000000000..567143ace159
--- /dev/null
+++ b/drivers/serial/8250_exar_st16c554.c
@@ -0,0 +1,52 @@
+/*
+ * linux/drivers/serial/8250_exar.c
+ *
+ * Written by Paul B Schroeder < pschroeder "at" uplogix "dot" com >
+ * Based on 8250_boca.
+ *
+ * Copyright (C) 2005 Russell King.
+ * Data taken from include/asm-i386/serial.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/serial_8250.h>
+
+#define PORT(_base,_irq) \
+ { \
+ .iobase = _base, \
+ .irq = _irq, \
+ .uartclk = 1843200, \
+ .iotype = UPIO_PORT, \
+ .flags = UPF_BOOT_AUTOCONF, \
+ }
+
+static struct plat_serial8250_port exar_data[] = {
+ PORT(0x100, 5),
+ PORT(0x108, 5),
+ PORT(0x110, 5),
+ PORT(0x118, 5),
+ { },
+};
+
+static struct platform_device exar_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_EXAR_ST16C554,
+ .dev = {
+ .platform_data = exar_data,
+ },
+};
+
+static int __init exar_init(void)
+{
+ return platform_device_register(&exar_device);
+}
+
+module_init(exar_init);
+
+MODULE_AUTHOR("Paul B Schroeder");
+MODULE_DESCRIPTION("8250 serial probe module for Exar cards");
+MODULE_LICENSE("GPL");
diff --git a/drivers/serial/8250_pnp.c b/drivers/serial/8250_pnp.c
index 71d907c8288b..d3d6b82706b5 100644
--- a/drivers/serial/8250_pnp.c
+++ b/drivers/serial/8250_pnp.c
@@ -464,11 +464,38 @@ static void __devexit serial_pnp_remove(struct pnp_dev *dev)
serial8250_unregister_port(line - 1);
}
+#ifdef CONFIG_PM
+static int serial_pnp_suspend(struct pnp_dev *dev, pm_message_t state)
+{
+ long line = (long)pnp_get_drvdata(dev);
+
+ if (!line)
+ return -ENODEV;
+ serial8250_suspend_port(line - 1);
+ return 0;
+}
+
+static int serial_pnp_resume(struct pnp_dev *dev)
+{
+ long line = (long)pnp_get_drvdata(dev);
+
+ if (!line)
+ return -ENODEV;
+ serial8250_resume_port(line - 1);
+ return 0;
+}
+#else
+#define serial_pnp_suspend NULL
+#define serial_pnp_resume NULL
+#endif /* CONFIG_PM */
+
static struct pnp_driver serial_pnp_driver = {
.name = "serial",
- .id_table = pnp_dev_table,
.probe = serial_pnp_probe,
.remove = __devexit_p(serial_pnp_remove),
+ .suspend = serial_pnp_suspend,
+ .resume = serial_pnp_resume,
+ .id_table = pnp_dev_table,
};
static int __init serial8250_pnp_init(void)
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 0b71e7d18903..fc12d5df10e2 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -210,6 +210,17 @@ config SERIAL_8250_BOCA
To compile this driver as a module, choose M here: the module
will be called 8250_boca.
+config SERIAL_8250_EXAR_ST16C554
+ tristate "Support Exar ST16C554/554D Quad UART"
+ depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
+ help
+ The Uplogix Envoy TU301 uses this Exar Quad UART. If you are
+ tinkering with your Envoy TU301, or have a machine with this UART,
+ say Y here.
+
+ To compile this driver as a module, choose M here: the module
+ will be called 8250_exar_st16c554.
+
config SERIAL_8250_HUB6
tristate "Support Hub6 cards"
depends on SERIAL_8250 != n && ISA && SERIAL_8250_MANY_PORTS
@@ -511,6 +522,25 @@ config SERIAL_IMX_CONSOLE
your boot loader (lilo or loadlin) about how to pass options to the
kernel at boot time.)
+config SERIAL_UARTLITE
+ tristate "Xilinx uartlite serial port support"
+ depends on PPC32
+ select SERIAL_CORE
+ help
+ Say Y here if you want to use the Xilinx uartlite serial controller.
+
+ To compile this driver as a module, choose M here: the
+ module will be called uartlite.ko.
+
+config SERIAL_UARTLITE_CONSOLE
+ bool "Support for console on Xilinx uartlite serial port"
+ depends on SERIAL_UARTLITE=y
+ select SERIAL_CORE_CONSOLE
+ help
+ Say Y here if you wish to use a Xilinx uartlite as the system
+ console (the system console is the device which receives all kernel
+ messages and warnings and which allows logins in single user mode).
+
config SERIAL_SUNCORE
bool
depends on SPARC
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index b4d8a7c182e3..df3632cd7df9 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_SERIAL_8250_CONSOLE) += 8250_early.o
obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
+obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554) += 8250_exar_st16c554.o
obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
obj-$(CONFIG_SERIAL_8250_AU1X00) += 8250_au1x00.o
@@ -55,4 +56,5 @@ obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
obj-$(CONFIG_SERIAL_SGI_IOC4) += ioc4_serial.o
obj-$(CONFIG_SERIAL_SGI_IOC3) += ioc3_serial.o
obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
+obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 4213fabc62bf..4d3626ef4643 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -129,6 +129,8 @@ static void pl010_rx_chars(struct uart_port *port)
*/
rsr = readb(port->membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
if (unlikely(rsr & UART01x_RSR_ANY)) {
+ writel(0, port->membase + UART01x_ECR);
+
if (rsr & UART01x_RSR_BE) {
rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
port->icount.brk++;
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 391a1f4167a4..9217ee6c7865 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/char/at91_serial.c
+ * linux/drivers/char/atmel_serial.c
*
* Driver for Atmel AT91 / AT32 Serial ports
* Copyright (C) 2003 Rick Bronson
@@ -36,11 +36,11 @@
#include <asm/io.h>
-#include <asm/arch/at91rm9200_pdc.h>
#include <asm/mach/serial_at91.h>
#include <asm/arch/board.h>
+#include <asm/arch/at91_pdc.h>
#ifdef CONFIG_ARM
-#include <asm/arch/system.h>
+#include <asm/arch/cpu.h>
#include <asm/arch/gpio.h>
#endif
@@ -137,8 +137,8 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
unsigned int control = 0;
unsigned int mode;
-#ifdef CONFIG_ARM
- if (arch_identify() == ARCH_ID_AT91RM9200) {
+#ifdef CONFIG_ARCH_AT91RM9200
+ if (cpu_is_at91rm9200()) {
/*
* AT91RM9200 Errata #39: RTS0 is not internally connected to PA21.
* We need to drive the pin manually.
diff --git a/drivers/serial/atmel_serial.h b/drivers/serial/atmel_serial.h
index eced2ad1a8d9..fe1763b2a6d5 100644
--- a/drivers/serial/atmel_serial.h
+++ b/drivers/serial/atmel_serial.h
@@ -31,8 +31,8 @@
#define ATMEL_US_RSTIT (1 << 13) /* Reset Iterations */
#define ATMEL_US_RSTNACK (1 << 14) /* Reset Non Acknowledge */
#define ATMEL_US_RETTO (1 << 15) /* Rearm Time-out */
-#define ATMEL_US_DTREN (1 << 16) /* Data Terminal Ready Enable */
-#define ATMEL_US_DTRDIS (1 << 17) /* Data Terminal Ready Disable */
+#define ATMEL_US_DTREN (1 << 16) /* Data Terminal Ready Enable [AT91RM9200 only] */
+#define ATMEL_US_DTRDIS (1 << 17) /* Data Terminal Ready Disable [AT91RM9200 only] */
#define ATMEL_US_RTSEN (1 << 18) /* Request To Send Enable */
#define ATMEL_US_RTSDIS (1 << 19) /* Request To Send Disable */
@@ -92,9 +92,9 @@
#define ATMEL_US_TXBUFE (1 << 11) /* Transmission Buffer Empty */
#define ATMEL_US_RXBUFF (1 << 12) /* Reception Buffer Full */
#define ATMEL_US_NACK (1 << 13) /* Non Acknowledge */
-#define ATMEL_US_RIIC (1 << 16) /* Ring Indicator Input Change */
-#define ATMEL_US_DSRIC (1 << 17) /* Data Set Ready Input Change */
-#define ATMEL_US_DCDIC (1 << 18) /* Data Carrier Detect Input Change */
+#define ATMEL_US_RIIC (1 << 16) /* Ring Indicator Input Change [AT91RM9200 only] */
+#define ATMEL_US_DSRIC (1 << 17) /* Data Set Ready Input Change [AT91RM9200 only] */
+#define ATMEL_US_DCDIC (1 << 18) /* Data Carrier Detect Input Change [AT91RM9200 only] */
#define ATMEL_US_CTSIC (1 << 19) /* Clear to Send Input Change */
#define ATMEL_US_RI (1 << 20) /* RI */
#define ATMEL_US_DSR (1 << 21) /* DSR */
@@ -106,6 +106,7 @@
#define ATMEL_US_CSR 0x14 /* Channel Status Register */
#define ATMEL_US_RHR 0x18 /* Receiver Holding Register */
#define ATMEL_US_THR 0x1c /* Transmitter Holding Register */
+#define ATMEL_US_SYNH (1 << 15) /* Transmit/Receive Sync [SAM9 only] */
#define ATMEL_US_BRGR 0x20 /* Baud Rate Generator Register */
#define ATMEL_US_CD (0xffff << 0) /* Clock Divider */
diff --git a/drivers/serial/cpm_uart/cpm_uart.h b/drivers/serial/cpm_uart/cpm_uart.h
index a8f894c78194..69715e556506 100644
--- a/drivers/serial/cpm_uart/cpm_uart.h
+++ b/drivers/serial/cpm_uart/cpm_uart.h
@@ -88,7 +88,7 @@ extern struct uart_cpm_port cpm_uart_ports[UART_NR];
/* these are located in their respective files */
void cpm_line_cr_cmd(int line, int cmd);
-int cpm_uart_init_portdesc(void);
+int __init cpm_uart_init_portdesc(void);
int cpm_uart_allocbuf(struct uart_cpm_port *pinfo, unsigned int is_con);
void cpm_uart_freebuf(struct uart_cpm_port *pinfo);
diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index 0abb544ae63d..7a3b97fdf8d1 100644
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -195,10 +195,8 @@ static void cpm_uart_start_tx(struct uart_port *port)
if (cpm_uart_tx_pump(port) != 0) {
if (IS_SMC(pinfo)) {
smcp->smc_smcm |= SMCM_TX;
- smcp->smc_smcmr |= SMCMR_TEN;
} else {
sccp->scc_sccm |= UART_SCCM_TX;
- pinfo->sccp->scc_gsmrl |= SCC_GSMRL_ENT;
}
}
}
@@ -421,9 +419,10 @@ static int cpm_uart_startup(struct uart_port *port)
/* Startup rx-int */
if (IS_SMC(pinfo)) {
pinfo->smcp->smc_smcm |= SMCM_RX;
- pinfo->smcp->smc_smcmr |= SMCMR_REN;
+ pinfo->smcp->smc_smcmr |= (SMCMR_REN | SMCMR_TEN);
} else {
pinfo->sccp->scc_sccm |= UART_SCCM_RX;
+ pinfo->sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT);
}
if (!(pinfo->flags & FLAG_CONSOLE))
@@ -1350,11 +1349,10 @@ static int cpm_uart_init(void) {
pr_info("cpm_uart: WARNING: no UART devices found on platform bus!\n");
pr_info(
"cpm_uart: the driver will guess configuration, but this mode is no longer supported.\n");
-#ifndef CONFIG_SERIAL_CPM_CONSOLE
- ret = cpm_uart_init_portdesc();
- if (ret)
- return ret;
-#endif
+
+ /* Don't run this again, if the console driver did it already */
+ if (cpm_uart_nr == 0)
+ cpm_uart_init_portdesc();
cpm_reg.nr = cpm_uart_nr;
ret = uart_register_driver(&cpm_reg);
@@ -1366,6 +1364,8 @@ static int cpm_uart_init(void) {
int con = cpm_uart_port_map[i];
cpm_uart_ports[con].port.line = i;
cpm_uart_ports[con].port.flags = UPF_BOOT_AUTOCONF;
+ if (cpm_uart_ports[con].set_lineif)
+ cpm_uart_ports[con].set_lineif(&cpm_uart_ports[con]);
uart_add_one_port(&cpm_reg, &cpm_uart_ports[con].port);
}
diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm1.c b/drivers/serial/cpm_uart/cpm_uart_cpm1.c
index 95afc37297a8..08e55fdc882a 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm1.c
@@ -184,7 +184,7 @@ void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
}
/* Setup any dynamic params in the uart desc */
-int cpm_uart_init_portdesc(void)
+int __init cpm_uart_init_portdesc(void)
{
pr_debug("CPM uart[-]:init portdesc\n");
diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
index b691d3e14754..787a8f134677 100644
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -282,7 +282,7 @@ void cpm_uart_freebuf(struct uart_cpm_port *pinfo)
}
/* Setup any dynamic params in the uart desc */
-int cpm_uart_init_portdesc(void)
+int __init cpm_uart_init_portdesc(void)
{
#if defined(CONFIG_SERIAL_CPM_SMC1) || defined(CONFIG_SERIAL_CPM_SMC2)
u32 addr;
diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c
index 53662b33b841..af1544f3356f 100644
--- a/drivers/serial/dz.c
+++ b/drivers/serial/dz.c
@@ -1,11 +1,13 @@
/*
- * dz.c: Serial port driver for DECStations equiped
+ * dz.c: Serial port driver for DECstations equipped
* with the DZ chipset.
*
* Copyright (C) 1998 Olivier A. D. Lebaillif
*
* Email: olivier.lebaillif@ifrsys.com
*
+ * Copyright (C) 2004, 2006 Maciej W. Rozycki
+ *
* [31-AUG-98] triemer
* Changed IRQ to use Harald's dec internals interrupts.h
* removed base_addr code - moving address assignment to setup.c
@@ -26,10 +28,16 @@
#undef DEBUG_DZ
+#if defined(CONFIG_SERIAL_DZ_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/delay.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/console.h>
+#include <linux/sysrq.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
@@ -45,14 +53,10 @@
#include <asm/system.h>
#include <asm/uaccess.h>
-#define CONSOLE_LINE (3) /* for definition of struct console */
-
#include "dz.h"
-#define DZ_INTR_DEBUG 1
-
static char *dz_name = "DECstation DZ serial driver version ";
-static char *dz_version = "1.02";
+static char *dz_version = "1.03";
struct dz_port {
struct uart_port port;
@@ -61,22 +65,6 @@ struct dz_port {
static struct dz_port dz_ports[DZ_NB_PORT];
-#ifdef DEBUG_DZ
-/*
- * debugging code to send out chars via prom
- */
-static void debug_console(const char *s, int count)
-{
- unsigned i;
-
- for (i = 0; i < count; i++) {
- if (*s == 10)
- prom_printf("%c", 13);
- prom_printf("%c", *s++);
- }
-}
-#endif
-
/*
* ------------------------------------------------------------
* dz_in () and dz_out ()
@@ -90,6 +78,7 @@ static inline unsigned short dz_in(struct dz_port *dport, unsigned offset)
{
volatile unsigned short *addr =
(volatile unsigned short *) (dport->port.membase + offset);
+
return *addr;
}
@@ -98,6 +87,7 @@ static inline void dz_out(struct dz_port *dport, unsigned offset,
{
volatile unsigned short *addr =
(volatile unsigned short *) (dport->port.membase + offset);
+
*addr = value;
}
@@ -144,7 +134,7 @@ static void dz_stop_rx(struct uart_port *uport)
spin_lock_irqsave(&dport->port.lock, flags);
dport->cflag &= ~DZ_CREAD;
- dz_out(dport, DZ_LPR, dport->cflag);
+ dz_out(dport, DZ_LPR, dport->cflag | dport->port.line);
spin_unlock_irqrestore(&dport->port.lock, flags);
}
@@ -155,14 +145,14 @@ static void dz_enable_ms(struct uart_port *port)
/*
* ------------------------------------------------------------
- * Here starts the interrupt handling routines. All of the
- * following subroutines are declared as inline and are folded
- * into dz_interrupt. They were separated out for readability's
- * sake.
*
- * Note: rs_interrupt() is a "fast" interrupt, which means that it
+ * Here start the interrupt handling routines. All of the following
+ * subroutines are declared as inline and are folded into
+ * dz_interrupt. They were separated out for readability's sake.
+ *
+ * Note: dz_interrupt() is a "fast" interrupt, which means that it
* runs with interrupts turned off. People who may want to modify
- * rs_interrupt() should try to keep the interrupt handler as fast as
+ * dz_interrupt() should try to keep the interrupt handler as fast as
* possible. After you are done making modifications, it is not a bad
* idea to do:
*
@@ -180,92 +170,74 @@ static void dz_enable_ms(struct uart_port *port)
* This routine deals with inputs from any lines.
* ------------------------------------------------------------
*/
-static inline void dz_receive_chars(struct dz_port *dport)
+static inline void dz_receive_chars(struct dz_port *dport_in,
+ struct pt_regs *regs)
{
+ struct dz_port *dport;
struct tty_struct *tty = NULL;
struct uart_icount *icount;
- int ignore = 0;
- unsigned short status, tmp;
+ int lines_rx[DZ_NB_PORT] = { [0 ... DZ_NB_PORT - 1] = 0 };
+ unsigned short status;
unsigned char ch, flag;
+ int i;
- /* this code is going to be a problem...
- the call to tty_flip_buffer is going to need
- to be rethought...
- */
- do {
- status = dz_in(dport, DZ_RBUF);
-
- /* punt so we don't get duplicate characters */
- if (!(status & DZ_DVAL))
- goto ignore_char;
-
-
- ch = UCHAR(status); /* grab the char */
- flag = TTY_NORMAL;
+ while ((status = dz_in(dport_in, DZ_RBUF)) & DZ_DVAL) {
+ dport = &dz_ports[LINE(status)];
+ tty = dport->port.info->tty; /* point to the proper dev */
-#if 0
- if (info->is_console) {
- if (ch == 0)
- return; /* it's a break ... */
- }
-#endif
+ ch = UCHAR(status); /* grab the char */
- tty = dport->port.info->tty;/* now tty points to the proper dev */
icount = &dport->port.icount;
-
- if (!tty)
- break;
-
icount->rx++;
- /* keep track of the statistics */
- if (status & (DZ_OERR | DZ_FERR | DZ_PERR)) {
- if (status & DZ_PERR) /* parity error */
- icount->parity++;
- else if (status & DZ_FERR) /* frame error */
- icount->frame++;
- if (status & DZ_OERR) /* overrun error */
- icount->overrun++;
-
- /* check to see if we should ignore the character
- and mask off conditions that should be ignored
+ flag = TTY_NORMAL;
+ if (status & DZ_FERR) { /* frame error */
+ /*
+ * There is no separate BREAK status bit, so
+ * treat framing errors as BREAKs for Magic SysRq
+ * and SAK; normally, otherwise.
*/
-
- if (status & dport->port.ignore_status_mask) {
- if (++ignore > 100)
- break;
- goto ignore_char;
- }
- /* mask off the error conditions we want to ignore */
- tmp = status & dport->port.read_status_mask;
-
- if (tmp & DZ_PERR) {
- flag = TTY_PARITY;
-#ifdef DEBUG_DZ
- debug_console("PERR\n", 5);
-#endif
- } else if (tmp & DZ_FERR) {
+ if (uart_handle_break(&dport->port))
+ continue;
+ if (dport->port.flags & UPF_SAK)
+ flag = TTY_BREAK;
+ else
flag = TTY_FRAME;
-#ifdef DEBUG_DZ
- debug_console("FERR\n", 5);
-#endif
- }
- if (tmp & DZ_OERR) {
-#ifdef DEBUG_DZ
- debug_console("OERR\n", 5);
-#endif
- tty_insert_flip_char(tty, ch, flag);
- ch = 0;
- flag = TTY_OVERRUN;
- }
+ } else if (status & DZ_OERR) /* overrun error */
+ flag = TTY_OVERRUN;
+ else if (status & DZ_PERR) /* parity error */
+ flag = TTY_PARITY;
+
+ /* keep track of the statistics */
+ switch (flag) {
+ case TTY_FRAME:
+ icount->frame++;
+ break;
+ case TTY_PARITY:
+ icount->parity++;
+ break;
+ case TTY_OVERRUN:
+ icount->overrun++;
+ break;
+ case TTY_BREAK:
+ icount->brk++;
+ break;
+ default:
+ break;
}
- tty_insert_flip_char(tty, ch, flag);
- ignore_char:
- ;
- } while (status & DZ_DVAL);
- if (tty)
- tty_flip_buffer_push(tty);
+ if (uart_handle_sysrq_char(&dport->port, ch, regs))
+ continue;
+
+ if ((status & dport->port.ignore_status_mask) == 0) {
+ uart_insert_char(&dport->port,
+ status, DZ_OERR, ch, flag);
+ lines_rx[LINE(status)] = 1;
+ }
+ }
+ for (i = 0; i < DZ_NB_PORT; i++)
+ if (lines_rx[i])
+ tty_flip_buffer_push(dz_ports[i].port.info->tty);
}
/*
@@ -275,26 +247,32 @@ static inline void dz_receive_chars(struct dz_port *dport)
* This routine deals with outputs to any lines.
* ------------------------------------------------------------
*/
-static inline void dz_transmit_chars(struct dz_port *dport)
+static inline void dz_transmit_chars(struct dz_port *dport_in)
{
- struct circ_buf *xmit = &dport->port.info->xmit;
+ struct dz_port *dport;
+ struct circ_buf *xmit;
+ unsigned short status;
unsigned char tmp;
- if (dport->port.x_char) { /* XON/XOFF chars */
+ status = dz_in(dport_in, DZ_CSR);
+ dport = &dz_ports[LINE(status)];
+ xmit = &dport->port.info->xmit;
+
+ if (dport->port.x_char) { /* XON/XOFF chars */
dz_out(dport, DZ_TDR, dport->port.x_char);
dport->port.icount.tx++;
dport->port.x_char = 0;
return;
}
- /* if nothing to do or stopped or hardware stopped */
+ /* If nothing to do or stopped or hardware stopped. */
if (uart_circ_empty(xmit) || uart_tx_stopped(&dport->port)) {
dz_stop_tx(&dport->port);
return;
}
/*
- * if something to do ... (rember the dz has no output fifo so we go
- * one char at a time :-<
+ * If something to do... (remember the dz has no output fifo,
+ * so we go one char at a time) :-<
*/
tmp = xmit->buf[xmit->tail];
xmit->tail = (xmit->tail + 1) & (DZ_XMIT_SIZE - 1);
@@ -304,23 +282,29 @@ static inline void dz_transmit_chars(struct dz_port *dport)
if (uart_circ_chars_pending(xmit) < DZ_WAKEUP_CHARS)
uart_write_wakeup(&dport->port);
- /* Are we done */
+ /* Are we are done. */
if (uart_circ_empty(xmit))
dz_stop_tx(&dport->port);
}
/*
* ------------------------------------------------------------
- * check_modem_status ()
+ * check_modem_status()
*
- * Only valid for the MODEM line duh !
+ * DS 3100 & 5100: Only valid for the MODEM line, duh!
+ * DS 5000/200: Valid for the MODEM and PRINTER line.
* ------------------------------------------------------------
*/
static inline void check_modem_status(struct dz_port *dport)
{
+ /*
+ * FIXME:
+ * 1. No status change interrupt; use a timer.
+ * 2. Handle the 3100/5000 as appropriate. --macro
+ */
unsigned short status;
- /* if not ne modem line just return */
+ /* If not the modem line just return. */
if (dport->port.line != DZ_MODEM)
return;
@@ -341,21 +325,18 @@ static inline void check_modem_status(struct dz_port *dport)
*/
static irqreturn_t dz_interrupt(int irq, void *dev)
{
- struct dz_port *dport;
+ struct dz_port *dport = (struct dz_port *)dev;
unsigned short status;
/* get the reason why we just got an irq */
- status = dz_in((struct dz_port *)dev, DZ_CSR);
- dport = &dz_ports[LINE(status)];
+ status = dz_in(dport, DZ_CSR);
- if (status & DZ_RDONE)
- dz_receive_chars(dport);
+ if ((status & (DZ_RDONE | DZ_RIE)) == (DZ_RDONE | DZ_RIE))
+ dz_receive_chars(dport, regs);
- if (status & DZ_TRDY)
+ if ((status & (DZ_TRDY | DZ_TIE)) == (DZ_TRDY | DZ_TIE))
dz_transmit_chars(dport);
- /* FIXME: what about check modem status??? --rmk */
-
return IRQ_HANDLED;
}
@@ -367,13 +348,13 @@ static irqreturn_t dz_interrupt(int irq, void *dev)
static unsigned int dz_get_mctrl(struct uart_port *uport)
{
+ /*
+ * FIXME: Handle the 3100/5000 as appropriate. --macro
+ */
struct dz_port *dport = (struct dz_port *)uport;
unsigned int mctrl = TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
if (dport->port.line == DZ_MODEM) {
- /*
- * CHECKME: This is a guess from the other code... --rmk
- */
if (dz_in(dport, DZ_MSR) & DZ_MODEM_DSR)
mctrl &= ~TIOCM_DSR;
}
@@ -383,6 +364,9 @@ static unsigned int dz_get_mctrl(struct uart_port *uport)
static void dz_set_mctrl(struct uart_port *uport, unsigned int mctrl)
{
+ /*
+ * FIXME: Handle the 3100/5000 as appropriate. --macro
+ */
struct dz_port *dport = (struct dz_port *)uport;
unsigned short tmp;
@@ -409,13 +393,6 @@ static int dz_startup(struct uart_port *uport)
unsigned long flags;
unsigned short tmp;
- /* The dz lines for the mouse/keyboard must be
- * opened using their respective drivers.
- */
- if ((dport->port.line == DZ_KEYBOARD) ||
- (dport->port.line == DZ_MOUSE))
- return -ENODEV;
-
spin_lock_irqsave(&dport->port.lock, flags);
/* enable the interrupt and the scanning */
@@ -442,7 +419,8 @@ static void dz_shutdown(struct uart_port *uport)
}
/*
- * get_lsr_info - get line status register info
+ * -------------------------------------------------------------------
+ * dz_tx_empty() -- get the transmitter empty status
*
* Purpose: Let user call ioctl() to get info when the UART physically
* is emptied. On bus types like RS485, the transmitter must
@@ -450,21 +428,28 @@ static void dz_shutdown(struct uart_port *uport)
* the transmit shift register is empty, not be done when the
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
+ * -------------------------------------------------------------------
*/
static unsigned int dz_tx_empty(struct uart_port *uport)
{
struct dz_port *dport = (struct dz_port *)uport;
- unsigned short status = dz_in(dport, DZ_LPR);
+ unsigned short tmp, mask = 1 << dport->port.line;
- /* FIXME: this appears to be obviously broken --rmk. */
- return status ? TIOCSER_TEMT : 0;
+ tmp = dz_in(dport, DZ_TCR);
+ tmp &= mask;
+
+ return tmp ? 0 : TIOCSER_TEMT;
}
static void dz_break_ctl(struct uart_port *uport, int break_state)
{
+ /*
+ * FIXME: Can't access BREAK bits in TDR easily;
+ * reuse the code for polled TX. --macro
+ */
struct dz_port *dport = (struct dz_port *)uport;
unsigned long flags;
- unsigned short tmp, mask = 1 << uport->line;
+ unsigned short tmp, mask = 1 << dport->port.line;
spin_lock_irqsave(&uport->lock, flags);
tmp = dz_in(dport, DZ_TCR);
@@ -561,7 +546,7 @@ static void dz_set_termios(struct uart_port *uport, struct termios *termios,
spin_lock_irqsave(&dport->port.lock, flags);
- dz_out(dport, DZ_LPR, cflag);
+ dz_out(dport, DZ_LPR, cflag | dport->port.line);
dport->cflag = cflag;
/* setup accept flag */
@@ -650,7 +635,7 @@ static void __init dz_init_ports(void)
for (i = 0, dport = dz_ports; i < DZ_NB_PORT; i++, dport++) {
spin_lock_init(&dport->port.lock);
dport->port.membase = (char *) base;
- dport->port.iotype = UPIO_PORT;
+ dport->port.iotype = UPIO_MEM;
dport->port.irq = dec_interrupt[DEC_IRQ_DZ11];
dport->port.line = i;
dport->port.fifosize = 1;
@@ -662,10 +647,7 @@ static void __init dz_init_ports(void)
static void dz_reset(struct dz_port *dport)
{
dz_out(dport, DZ_CSR, DZ_CLR);
-
while (dz_in(dport, DZ_CSR) & DZ_CLR);
- /* FIXME: cpu_relax? */
-
iob();
/* enable scanning */
@@ -673,26 +655,55 @@ static void dz_reset(struct dz_port *dport)
}
#ifdef CONFIG_SERIAL_DZ_CONSOLE
+/*
+ * -------------------------------------------------------------------
+ * dz_console_putchar() -- transmit a character
+ *
+ * Polled transmission. This is tricky. We need to mask transmit
+ * interrupts so that they do not interfere, enable the transmitter
+ * for the line requested and then wait till the transmit scanner
+ * requests data for this line. But it may request data for another
+ * line first, in which case we have to disable its transmitter and
+ * repeat waiting till our line pops up. Only then the character may
+ * be transmitted. Finally, the state of the transmitter mask is
+ * restored. Welcome to the world of PDP-11!
+ * -------------------------------------------------------------------
+ */
static void dz_console_putchar(struct uart_port *uport, int ch)
{
struct dz_port *dport = (struct dz_port *)uport;
unsigned long flags;
- int loops = 2500;
- unsigned short tmp = (unsigned char)ch;
- /* this code sends stuff out to serial device - spinning its
- wheels and waiting. */
+ unsigned short csr, tcr, trdy, mask;
+ int loops = 10000;
spin_lock_irqsave(&dport->port.lock, flags);
+ csr = dz_in(dport, DZ_CSR);
+ dz_out(dport, DZ_CSR, csr & ~DZ_TIE);
+ tcr = dz_in(dport, DZ_TCR);
+ tcr |= 1 << dport->port.line;
+ mask = tcr;
+ dz_out(dport, DZ_TCR, mask);
+ iob();
+ spin_unlock_irqrestore(&dport->port.lock, flags);
- /* spin our wheels */
- while (((dz_in(dport, DZ_CSR) & DZ_TRDY) != DZ_TRDY) && loops--)
- /* FIXME: cpu_relax, udelay? --rmk */
- ;
+ while (loops--) {
+ trdy = dz_in(dport, DZ_CSR);
+ if (!(trdy & DZ_TRDY))
+ continue;
+ trdy = (trdy & DZ_TLINE) >> 8;
+ if (trdy == dport->port.line)
+ break;
+ mask &= ~(1 << trdy);
+ dz_out(dport, DZ_TCR, mask);
+ iob();
+ udelay(2);
+ }
- /* Actually transmit the character. */
- dz_out(dport, DZ_TDR, tmp);
+ if (loops) /* Cannot send otherwise. */
+ dz_out(dport, DZ_TDR, ch);
- spin_unlock_irqrestore(&dport->port.lock, flags);
+ dz_out(dport, DZ_TCR, tcr);
+ dz_out(dport, DZ_CSR, csr);
}
/*
@@ -703,11 +714,11 @@ static void dz_console_putchar(struct uart_port *uport, int ch)
* The console must be locked when we get here.
* -------------------------------------------------------------------
*/
-static void dz_console_print(struct console *cons,
+static void dz_console_print(struct console *co,
const char *str,
unsigned int count)
{
- struct dz_port *dport = &dz_ports[CONSOLE_LINE];
+ struct dz_port *dport = &dz_ports[co->index];
#ifdef DEBUG_DZ
prom_printf((char *) str);
#endif
@@ -716,49 +727,43 @@ static void dz_console_print(struct console *cons,
static int __init dz_console_setup(struct console *co, char *options)
{
- struct dz_port *dport = &dz_ports[CONSOLE_LINE];
+ struct dz_port *dport = &dz_ports[co->index];
int baud = 9600;
int bits = 8;
int parity = 'n';
int flow = 'n';
- int ret;
- unsigned short mask, tmp;
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
dz_reset(dport);
- ret = uart_set_options(&dport->port, co, baud, parity, bits, flow);
- if (ret == 0) {
- mask = 1 << dport->port.line;
- tmp = dz_in(dport, DZ_TCR); /* read the TX flag */
- if (!(tmp & mask)) {
- tmp |= mask; /* set the TX flag */
- dz_out(dport, DZ_TCR, tmp);
- }
- }
-
- return ret;
+ return uart_set_options(&dport->port, co, baud, parity, bits, flow);
}
-static struct console dz_sercons =
-{
+static struct uart_driver dz_reg;
+static struct console dz_sercons = {
.name = "ttyS",
.write = dz_console_print,
.device = uart_console_device,
.setup = dz_console_setup,
- .flags = CON_CONSDEV | CON_PRINTBUFFER,
- .index = CONSOLE_LINE,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &dz_reg,
};
-void __init dz_serial_console_init(void)
+static int __init dz_serial_console_init(void)
{
- dz_init_ports();
-
- register_console(&dz_sercons);
+ if (!IOASIC) {
+ dz_init_ports();
+ register_console(&dz_sercons);
+ return 0;
+ } else
+ return -ENXIO;
}
+console_initcall(dz_serial_console_init);
+
#define SERIAL_DZ_CONSOLE &dz_sercons
#else
#define SERIAL_DZ_CONSOLE NULL
@@ -767,35 +772,29 @@ void __init dz_serial_console_init(void)
static struct uart_driver dz_reg = {
.owner = THIS_MODULE,
.driver_name = "serial",
- .dev_name = "ttyS%d",
+ .dev_name = "ttyS",
.major = TTY_MAJOR,
.minor = 64,
.nr = DZ_NB_PORT,
.cons = SERIAL_DZ_CONSOLE,
};
-int __init dz_init(void)
+static int __init dz_init(void)
{
- unsigned long flags;
int ret, i;
+ if (IOASIC)
+ return -ENXIO;
+
printk("%s%s\n", dz_name, dz_version);
dz_init_ports();
- save_flags(flags);
- cli();
-
#ifndef CONFIG_SERIAL_DZ_CONSOLE
/* reset the chip */
dz_reset(&dz_ports[0]);
#endif
- /* order matters here... the trick is that flags
- is updated... in request_irq - to immediatedly obliterate
- it is unwise. */
- restore_flags(flags);
-
if (request_irq(dz_ports[0].port.irq, dz_interrupt,
IRQF_DISABLED, "DZ", &dz_ports[0]))
panic("Unable to register DZ interrupt");
@@ -810,5 +809,7 @@ int __init dz_init(void)
return ret;
}
+module_init(dz_init);
+
MODULE_DESCRIPTION("DECstation DZ serial driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/serial/dz.h b/drivers/serial/dz.h
index 86ef417382bb..9674d4e49872 100644
--- a/drivers/serial/dz.h
+++ b/drivers/serial/dz.h
@@ -1,20 +1,22 @@
/*
- * dz.h: Serial port driver for DECStations equiped
+ * dz.h: Serial port driver for DECstations equipped
* with the DZ chipset.
*
* Copyright (C) 1998 Olivier A. D. Lebaillif
*
* Email: olivier.lebaillif@ifrsys.com
*
+ * Copyright (C) 2004, 2006 Maciej W. Rozycki
*/
#ifndef DZ_SERIAL_H
#define DZ_SERIAL_H
/*
- * Definitions for the Control and Status Received.
+ * Definitions for the Control and Status Register.
*/
#define DZ_TRDY 0x8000 /* Transmitter empty */
-#define DZ_TIE 0x4000 /* Transmitter Interrupt Enable */
+#define DZ_TIE 0x4000 /* Transmitter Interrupt Enbl */
+#define DZ_TLINE 0x0300 /* Transmitter Line Number */
#define DZ_RDONE 0x0080 /* Receiver data ready */
#define DZ_RIE 0x0040 /* Receive Interrupt Enable */
#define DZ_MSE 0x0020 /* Master Scan Enable */
@@ -22,32 +24,44 @@
#define DZ_MAINT 0x0008 /* Loop Back Mode */
/*
- * Definitions for the Received buffer.
+ * Definitions for the Receiver Buffer Register.
*/
-#define DZ_RBUF_MASK 0x00FF /* Data Mask in the Receive Buffer */
-#define DZ_LINE_MASK 0x0300 /* Line Mask in the Receive Buffer */
+#define DZ_RBUF_MASK 0x00FF /* Data Mask */
+#define DZ_LINE_MASK 0x0300 /* Line Mask */
#define DZ_DVAL 0x8000 /* Valid Data indicator */
#define DZ_OERR 0x4000 /* Overrun error indicator */
#define DZ_FERR 0x2000 /* Frame error indicator */
#define DZ_PERR 0x1000 /* Parity error indicator */
-#define LINE(x) (x & DZ_LINE_MASK) >> 8 /* Get the line number from the input buffer */
-#define UCHAR(x) (unsigned char)(x & DZ_RBUF_MASK)
+#define LINE(x) ((x & DZ_LINE_MASK) >> 8) /* Get the line number
+ from the input buffer */
+#define UCHAR(x) ((unsigned char)(x & DZ_RBUF_MASK))
/*
- * Definitions for the Transmit Register.
+ * Definitions for the Transmit Control Register.
*/
#define DZ_LINE_KEYBOARD 0x0001
#define DZ_LINE_MOUSE 0x0002
#define DZ_LINE_MODEM 0x0004
#define DZ_LINE_PRINTER 0x0008
+#define DZ_MODEM_RTS 0x0800 /* RTS for the modem line (2) */
#define DZ_MODEM_DTR 0x0400 /* DTR for the modem line (2) */
+#define DZ_PRINT_RTS 0x0200 /* RTS for the prntr line (3) */
+#define DZ_PRINT_DTR 0x0100 /* DTR for the prntr line (3) */
+#define DZ_LNENB 0x000f /* Transmitter Line Enable */
/*
* Definitions for the Modem Status Register.
*/
+#define DZ_MODEM_RI 0x0800 /* RI for the modem line (2) */
+#define DZ_MODEM_CD 0x0400 /* CD for the modem line (2) */
#define DZ_MODEM_DSR 0x0200 /* DSR for the modem line (2) */
+#define DZ_MODEM_CTS 0x0100 /* CTS for the modem line (2) */
+#define DZ_PRINT_RI 0x0008 /* RI for the printer line (3) */
+#define DZ_PRINT_CD 0x0004 /* CD for the printer line (3) */
+#define DZ_PRINT_DSR 0x0002 /* DSR for the prntr line (3) */
+#define DZ_PRINT_CTS 0x0001 /* CTS for the prntr line (3) */
/*
* Definitions for the Transmit Data Register.
diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c
index aee1b31f1a1c..3db206d29b33 100644
--- a/drivers/serial/mcfserial.c
+++ b/drivers/serial/mcfserial.c
@@ -60,7 +60,8 @@ struct timer_list mcfrs_timer_struct;
#if defined(CONFIG_HW_FEITH)
#define CONSOLE_BAUD_RATE 38400
#define DEFAULT_CBAUD B38400
-#elif defined(CONFIG_MOD5272) || defined(CONFIG_M5208EVB) || defined(CONFIG_M5329EVB)
+#elif defined(CONFIG_MOD5272) || defined(CONFIG_M5208EVB) || \
+ defined(CONFIG_M5329EVB) || defined(CONFIG_GILBARCO)
#define CONSOLE_BAUD_RATE 115200
#define DEFAULT_CBAUD B115200
#elif defined(CONFIG_ARNEWSH) || defined(CONFIG_FREESCALE) || \
@@ -109,12 +110,30 @@ static struct mcf_serial mcfrs_table[] = {
.irq = IRQBASE,
.flags = ASYNC_BOOT_AUTOCONF,
},
+#ifdef MCFUART_BASE2
{ /* ttyS1 */
.magic = 0,
.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE2),
.irq = IRQBASE+1,
.flags = ASYNC_BOOT_AUTOCONF,
},
+#endif
+#ifdef MCFUART_BASE3
+ { /* ttyS2 */
+ .magic = 0,
+ .addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE3),
+ .irq = IRQBASE+2,
+ .flags = ASYNC_BOOT_AUTOCONF,
+ },
+#endif
+#ifdef MCFUART_BASE4
+ { /* ttyS3 */
+ .magic = 0,
+ .addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE4),
+ .irq = IRQBASE+3,
+ .flags = ASYNC_BOOT_AUTOCONF,
+ },
+#endif
};
@@ -1516,6 +1535,22 @@ static void mcfrs_irqinit(struct mcf_serial *info)
imrp = (volatile unsigned long *) (MCF_MBAR + MCFICM_INTC0 +
MCFINTC_IMRL);
*imrp &= ~((1 << (info->irq - MCFINT_VECBASE)) | 1);
+#if defined(CONFIG_M527x)
+ {
+ /*
+ * External Pin Mask Setting & Enable External Pin for Interface
+ * mrcbis@aliceposta.it
+ */
+ unsigned short *serpin_enable_mask;
+ serpin_enable_mask = (MCF_IPSBAR + MCF_GPIO_PAR_UART);
+ if (info->line == 0)
+ *serpin_enable_mask |= UART0_ENABLE_MASK;
+ else if (info->line == 1)
+ *serpin_enable_mask |= UART1_ENABLE_MASK;
+ else if (info->line == 2)
+ *serpin_enable_mask |= UART2_ENABLE_MASK;
+ }
+#endif
#elif defined(CONFIG_M520x)
volatile unsigned char *icrp, *uartp;
volatile unsigned long *imrp;
@@ -1713,7 +1748,7 @@ mcfrs_init(void)
/* Initialize the tty_driver structure */
mcfrs_serial_driver->owner = THIS_MODULE;
mcfrs_serial_driver->name = "ttyS";
- mcfrs_serial_driver->driver_name = "serial";
+ mcfrs_serial_driver->driver_name = "mcfserial";
mcfrs_serial_driver->major = TTY_MAJOR;
mcfrs_serial_driver->minor_start = 64;
mcfrs_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
@@ -1797,10 +1832,23 @@ void mcfrs_init_console(void)
uartp[MCFUART_UMR] = MCFUART_MR1_PARITYNONE | MCFUART_MR1_CS8;
uartp[MCFUART_UMR] = MCFUART_MR2_STOP1;
+#ifdef CONFIG_M5272
+{
+ /*
+ * For the MCF5272, also compute the baudrate fraction.
+ */
+ int fraction = MCF_BUSCLK - (clk * 32 * mcfrs_console_baud);
+ fraction *= 16;
+ fraction /= (32 * mcfrs_console_baud);
+ uartp[MCFUART_UFPD] = (fraction & 0xf); /* set fraction */
+ clk = (MCF_BUSCLK / mcfrs_console_baud) / 32;
+}
+#else
clk = ((MCF_BUSCLK / mcfrs_console_baud) + 16) / 32; /* set baud */
+#endif
+
uartp[MCFUART_UBG1] = (clk & 0xff00) >> 8; /* set msb baud */
uartp[MCFUART_UBG2] = (clk & 0xff); /* set lsb baud */
-
uartp[MCFUART_UCSR] = MCFUART_UCSR_RXCLKTIMER | MCFUART_UCSR_TXCLKTIMER;
uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE;
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index 4f80c5b4a753..6dd579ed9777 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -1,6 +1,4 @@
/*
- * drivers/serial/mpc52xx_uart.c
- *
* Driver for the PSC of the Freescale MPC52xx PSCs configured as UARTs.
*
* FIXME According to the usermanual the status bits in the status register
@@ -14,18 +12,20 @@
*
*
* Maintainer : Sylvain Munaut <tnt@246tNt.com>
- *
+ *
* Some of the code has been inspired/copied from the 2.4 code written
* by Dale Farnsworth <dfarnsworth@mvista.com>.
- *
- * Copyright (C) 2004-2005 Sylvain Munaut <tnt@246tNt.com>
+ *
+ * Copyright (C) 2006 Secret Lab Technologies Ltd.
+ * Grant Likely <grant.likely@secretlab.ca>
+ * Copyright (C) 2004-2006 Sylvain Munaut <tnt@246tNt.com>
* Copyright (C) 2003 MontaVista, Software, Inc.
- *
+ *
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
-
+
/* Platform device Usage :
*
* Since PSCs can have multiple function, the correct driver for each one
@@ -44,7 +44,24 @@
* will be mapped to.
*/
-#include <linux/platform_device.h>
+/* OF Platform device Usage :
+ *
+ * This driver is only used for PSCs configured in uart mode. The device
+ * tree will have a node for each PSC in uart mode w/ device_type = "serial"
+ * and "mpc52xx-psc-uart" in the compatible string
+ *
+ * By default, PSC devices are enumerated in the order they are found. However
+ * a particular PSC number can be forces by adding 'device_no = <port#>'
+ * to the device node.
+ *
+ * The driver init all necessary registers to place the PSC in uart mode without
+ * DCD. However, the pin multiplexing aren't changed and should be set either
+ * by the bootloader or in the platform init code.
+ */
+
+#undef DEBUG
+
+#include <linux/device.h>
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/serial.h>
@@ -54,6 +71,12 @@
#include <asm/delay.h>
#include <asm/io.h>
+#if defined(CONFIG_PPC_MERGE)
+#include <asm/of_platform.h>
+#else
+#include <linux/platform_device.h>
+#endif
+
#include <asm/mpc52xx.h>
#include <asm/mpc52xx_psc.h>
@@ -80,6 +103,12 @@ static struct uart_port mpc52xx_uart_ports[MPC52xx_PSC_MAXNUM];
* it's cleared, then a memset(...,0,...) should be added to
* the console_init
*/
+#if defined(CONFIG_PPC_MERGE)
+/* lookup table for matching device nodes to index numbers */
+static struct device_node *mpc52xx_uart_nodes[MPC52xx_PSC_MAXNUM];
+
+static void mpc52xx_uart_of_enumerate(void);
+#endif
#define PSC(port) ((struct mpc52xx_psc __iomem *)((port)->membase))
@@ -96,32 +125,40 @@ static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id);
#define uart_console(port) (0)
#endif
+#if defined(CONFIG_PPC_MERGE)
+static struct of_device_id mpc52xx_uart_of_match[] = {
+ { .type = "serial", .compatible = "mpc52xx-psc-uart", },
+ { .type = "serial", .compatible = "mpc5200-psc", }, /* Efika only! */
+ {},
+};
+#endif
+
/* ======================================================================== */
/* UART operations */
/* ======================================================================== */
-static unsigned int
+static unsigned int
mpc52xx_uart_tx_empty(struct uart_port *port)
{
int status = in_be16(&PSC(port)->mpc52xx_psc_status);
return (status & MPC52xx_PSC_SR_TXEMP) ? TIOCSER_TEMT : 0;
}
-static void
+static void
mpc52xx_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
/* Not implemented */
}
-static unsigned int
+static unsigned int
mpc52xx_uart_get_mctrl(struct uart_port *port)
{
/* Not implemented */
return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
}
-static void
+static void
mpc52xx_uart_stop_tx(struct uart_port *port)
{
/* port->lock taken by caller */
@@ -129,7 +166,7 @@ mpc52xx_uart_stop_tx(struct uart_port *port)
out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
}
-static void
+static void
mpc52xx_uart_start_tx(struct uart_port *port)
{
/* port->lock taken by caller */
@@ -137,12 +174,12 @@ mpc52xx_uart_start_tx(struct uart_port *port)
out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
}
-static void
+static void
mpc52xx_uart_send_xchar(struct uart_port *port, char ch)
{
unsigned long flags;
spin_lock_irqsave(&port->lock, flags);
-
+
port->x_char = ch;
if (ch) {
/* Make sure tx interrupts are on */
@@ -150,7 +187,7 @@ mpc52xx_uart_send_xchar(struct uart_port *port, char ch)
port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
}
-
+
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -178,7 +215,7 @@ mpc52xx_uart_break_ctl(struct uart_port *port, int ctl)
out_8(&PSC(port)->command,MPC52xx_PSC_START_BRK);
else
out_8(&PSC(port)->command,MPC52xx_PSC_STOP_BRK);
-
+
spin_unlock_irqrestore(&port->lock, flags);
}
@@ -197,11 +234,11 @@ mpc52xx_uart_startup(struct uart_port *port)
/* Reset/activate the port, clear and enable interrupts */
out_8(&psc->command,MPC52xx_PSC_RST_RX);
out_8(&psc->command,MPC52xx_PSC_RST_TX);
-
+
out_be32(&psc->sicr,0); /* UART mode DCD ignored */
out_be16(&psc->mpc52xx_psc_clock_select, 0xdd00); /* /16 prescaler on */
-
+
out_8(&psc->rfcntl, 0x00);
out_be16(&psc->rfalarm, 0x1ff);
out_8(&psc->tfcntl, 0x07);
@@ -209,10 +246,10 @@ mpc52xx_uart_startup(struct uart_port *port)
port->read_status_mask |= MPC52xx_PSC_IMR_RXRDY | MPC52xx_PSC_IMR_TXRDY;
out_be16(&psc->mpc52xx_psc_imr,port->read_status_mask);
-
+
out_8(&psc->command,MPC52xx_PSC_TX_ENABLE);
out_8(&psc->command,MPC52xx_PSC_RX_ENABLE);
-
+
return 0;
}
@@ -220,19 +257,19 @@ static void
mpc52xx_uart_shutdown(struct uart_port *port)
{
struct mpc52xx_psc __iomem *psc = PSC(port);
-
+
/* Shut down the port, interrupt and all */
out_8(&psc->command,MPC52xx_PSC_RST_RX);
out_8(&psc->command,MPC52xx_PSC_RST_TX);
-
- port->read_status_mask = 0;
+
+ port->read_status_mask = 0;
out_be16(&psc->mpc52xx_psc_imr,port->read_status_mask);
/* Release interrupt */
free_irq(port->irq, port);
}
-static void
+static void
mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
struct termios *old)
{
@@ -241,10 +278,10 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
unsigned char mr1, mr2;
unsigned short ctr;
unsigned int j, baud, quot;
-
+
/* Prepare what we're gonna write */
mr1 = 0;
-
+
switch (new->c_cflag & CSIZE) {
case CS5: mr1 |= MPC52xx_PSC_MODE_5_BITS;
break;
@@ -261,8 +298,8 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
MPC52xx_PSC_MODE_PARODD : MPC52xx_PSC_MODE_PAREVEN;
} else
mr1 |= MPC52xx_PSC_MODE_PARNONE;
-
-
+
+
mr2 = 0;
if (new->c_cflag & CSTOPB)
@@ -276,7 +313,7 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
baud = uart_get_baud_rate(port, new, old, 0, port->uartclk/16);
quot = uart_get_divisor(port, baud);
ctr = quot & 0xffff;
-
+
/* Get the lock */
spin_lock_irqsave(&port->lock, flags);
@@ -290,14 +327,14 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
* boot for the console, all stuff is not yet ready to receive at that
* time and that just makes the kernel oops */
/* while (j-- && mpc52xx_uart_int_rx_chars(port)); */
- while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
+ while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
--j)
udelay(1);
if (!j)
printk( KERN_ERR "mpc52xx_uart.c: "
"Unable to flush RX & TX fifos in-time in set_termios."
- "Some chars may have been lost.\n" );
+ "Some chars may have been lost.\n" );
/* Reset the TX & RX */
out_8(&psc->command,MPC52xx_PSC_RST_RX);
@@ -309,7 +346,7 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct termios *new,
out_8(&psc->mode,mr2);
out_8(&psc->ctur,ctr >> 8);
out_8(&psc->ctlr,ctr & 0xff);
-
+
/* Reenable TX & RX */
out_8(&psc->command,MPC52xx_PSC_TX_ENABLE);
out_8(&psc->command,MPC52xx_PSC_RX_ENABLE);
@@ -332,7 +369,7 @@ mpc52xx_uart_release_port(struct uart_port *port)
port->membase = NULL;
}
- release_mem_region(port->mapbase, MPC52xx_PSC_SIZE);
+ release_mem_region(port->mapbase, sizeof(struct mpc52xx_psc));
}
static int
@@ -341,12 +378,13 @@ mpc52xx_uart_request_port(struct uart_port *port)
int err;
if (port->flags & UPF_IOREMAP) /* Need to remap ? */
- port->membase = ioremap(port->mapbase, MPC52xx_PSC_SIZE);
+ port->membase = ioremap(port->mapbase,
+ sizeof(struct mpc52xx_psc));
if (!port->membase)
return -EINVAL;
- err = request_mem_region(port->mapbase, MPC52xx_PSC_SIZE,
+ err = request_mem_region(port->mapbase, sizeof(struct mpc52xx_psc),
"mpc52xx_psc_uart") != NULL ? 0 : -EBUSY;
if (err && (port->flags & UPF_IOREMAP)) {
@@ -373,7 +411,7 @@ mpc52xx_uart_verify_port(struct uart_port *port, struct serial_struct *ser)
if ( (ser->irq != port->irq) ||
(ser->io_type != SERIAL_IO_MEM) ||
- (ser->baud_base != port->uartclk) ||
+ (ser->baud_base != port->uartclk) ||
(ser->iomem_base != (void*)port->mapbase) ||
(ser->hub6 != 0 ) )
return -EINVAL;
@@ -404,11 +442,11 @@ static struct uart_ops mpc52xx_uart_ops = {
.verify_port = mpc52xx_uart_verify_port
};
-
+
/* ======================================================================== */
/* Interrupt handling */
/* ======================================================================== */
-
+
static inline int
mpc52xx_uart_int_rx_chars(struct uart_port *port)
{
@@ -435,11 +473,11 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
flag = TTY_NORMAL;
port->icount.rx++;
-
+
if ( status & (MPC52xx_PSC_SR_PE |
MPC52xx_PSC_SR_FE |
MPC52xx_PSC_SR_RB) ) {
-
+
if (status & MPC52xx_PSC_SR_RB) {
flag = TTY_BREAK;
uart_handle_break(port);
@@ -464,7 +502,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
}
tty_flip_buffer_push(tty);
-
+
return in_be16(&PSC(port)->mpc52xx_psc_status) & MPC52xx_PSC_SR_RXRDY;
}
@@ -509,25 +547,25 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
return 1;
}
-static irqreturn_t
+static irqreturn_t
mpc52xx_uart_int(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
unsigned long pass = ISR_PASS_LIMIT;
unsigned int keepgoing;
unsigned short status;
-
+
spin_lock(&port->lock);
-
+
/* While we have stuff to do, we continue */
do {
/* If we don't find anything to do, we stop */
- keepgoing = 0;
-
+ keepgoing = 0;
+
/* Read status */
status = in_be16(&PSC(port)->mpc52xx_psc_isr);
status &= port->read_status_mask;
-
+
/* Do we need to receive chars ? */
/* For this RX interrupts must be on and some chars waiting */
if ( status & MPC52xx_PSC_IMR_RXRDY )
@@ -537,15 +575,15 @@ mpc52xx_uart_int(int irq, void *dev_id)
/* For this, TX must be ready and TX interrupt enabled */
if ( status & MPC52xx_PSC_IMR_TXRDY )
keepgoing |= mpc52xx_uart_int_tx_chars(port);
-
+
/* Limit number of iteration */
if ( !(--pass) )
keepgoing = 0;
} while (keepgoing);
-
+
spin_unlock(&port->lock);
-
+
return IRQ_HANDLED;
}
@@ -563,13 +601,18 @@ mpc52xx_console_get_options(struct uart_port *port,
struct mpc52xx_psc __iomem *psc = PSC(port);
unsigned char mr1;
+ pr_debug("mpc52xx_console_get_options(port=%p)\n", port);
+
/* Read the mode registers */
out_8(&psc->command,MPC52xx_PSC_SEL_MODE_REG_1);
mr1 = in_8(&psc->mode);
-
+
/* CT{U,L}R are write-only ! */
- *baud = __res.bi_baudrate ?
- __res.bi_baudrate : CONFIG_SERIAL_MPC52xx_CONSOLE_BAUD;
+ *baud = CONFIG_SERIAL_MPC52xx_CONSOLE_BAUD;
+#if !defined(CONFIG_PPC_MERGE)
+ if (__res.bi_baudrate)
+ *baud = __res.bi_baudrate;
+#endif
/* Parse them */
switch (mr1 & MPC52xx_PSC_MODE_BITS_MASK) {
@@ -579,26 +622,26 @@ mpc52xx_console_get_options(struct uart_port *port,
case MPC52xx_PSC_MODE_8_BITS:
default: *bits = 8;
}
-
+
if (mr1 & MPC52xx_PSC_MODE_PARNONE)
*parity = 'n';
else
*parity = mr1 & MPC52xx_PSC_MODE_PARODD ? 'o' : 'e';
}
-static void
+static void
mpc52xx_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_port *port = &mpc52xx_uart_ports[co->index];
struct mpc52xx_psc __iomem *psc = PSC(port);
unsigned int i, j;
-
+
/* Disable interrupts */
out_be16(&psc->mpc52xx_psc_imr, 0);
/* Wait the TX buffer to be empty */
- j = 5000000; /* Maximum wait */
- while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
+ j = 5000000; /* Maximum wait */
+ while (!(in_be16(&psc->mpc52xx_psc_status) & MPC52xx_PSC_SR_TXEMP) &&
--j)
udelay(1);
@@ -607,13 +650,13 @@ mpc52xx_console_write(struct console *co, const char *s, unsigned int count)
/* Line return handling */
if (*s == '\n')
out_8(&psc->mpc52xx_psc_buffer_8, '\r');
-
+
/* Send the char */
out_8(&psc->mpc52xx_psc_buffer_8, *s);
/* Wait the TX buffer to be empty */
- j = 20000; /* Maximum wait */
- while (!(in_be16(&psc->mpc52xx_psc_status) &
+ j = 20000; /* Maximum wait */
+ while (!(in_be16(&psc->mpc52xx_psc_status) &
MPC52xx_PSC_SR_TXEMP) && --j)
udelay(1);
}
@@ -622,6 +665,7 @@ mpc52xx_console_write(struct console *co, const char *s, unsigned int count)
out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
}
+#if !defined(CONFIG_PPC_MERGE)
static int __init
mpc52xx_console_setup(struct console *co, char *options)
{
@@ -634,7 +678,7 @@ mpc52xx_console_setup(struct console *co, char *options)
if (co->index < 0 || co->index >= MPC52xx_PSC_MAXNUM)
return -EINVAL;
-
+
/* Basic port init. Needed since we use some uart_??? func before
* real init for early access */
spin_lock_init(&port->lock);
@@ -656,6 +700,78 @@ mpc52xx_console_setup(struct console *co, char *options)
return uart_set_options(port, co, baud, parity, bits, flow);
}
+#else
+
+static int __init
+mpc52xx_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port = &mpc52xx_uart_ports[co->index];
+ struct device_node *np = mpc52xx_uart_nodes[co->index];
+ unsigned int ipb_freq;
+ struct resource res;
+ int ret;
+
+ int baud = CONFIG_SERIAL_MPC52xx_CONSOLE_BAUD;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ pr_debug("mpc52xx_console_setup co=%p, co->index=%i, options=%s\n",
+ co, co->index, options);
+
+ if ((co->index < 0) || (co->index > MPC52xx_PSC_MAXNUM)) {
+ pr_debug("PSC%x out of range\n", co->index);
+ return -EINVAL;
+ }
+
+ if (!np) {
+ pr_debug("PSC%x not found in device tree\n", co->index);
+ return -EINVAL;
+ }
+
+ pr_debug("Console on ttyPSC%x is %s\n",
+ co->index, mpc52xx_uart_nodes[co->index]->full_name);
+
+ /* Fetch register locations */
+ if ((ret = of_address_to_resource(np, 0, &res)) != 0) {
+ pr_debug("Could not get resources for PSC%x\n", co->index);
+ return ret;
+ }
+
+ /* Search for bus-frequency property in this node or a parent */
+ if ((ipb_freq = mpc52xx_find_ipb_freq(np)) == 0) {
+ pr_debug("Could not find IPB bus frequency!\n");
+ return -EINVAL;
+ }
+
+ /* Basic port init. Needed since we use some uart_??? func before
+ * real init for early access */
+ spin_lock_init(&port->lock);
+ port->uartclk = ipb_freq / 2;
+ port->ops = &mpc52xx_uart_ops;
+ port->mapbase = res.start;
+ port->membase = ioremap(res.start, sizeof(struct mpc52xx_psc));
+ port->irq = irq_of_parse_and_map(np, 0);
+
+ if (port->membase == NULL)
+ return -EINVAL;
+
+ pr_debug("mpc52xx-psc uart at %lx, mapped to %p, irq=%x, freq=%i\n",
+ port->mapbase, port->membase, port->irq, port->uartclk);
+
+ /* Setup the port parameters accoding to options */
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+ else
+ mpc52xx_console_get_options(port, &baud, &parity, &bits, &flow);
+
+ pr_debug("Setting console parameters: %i %i%c1 flow=%c\n",
+ baud, bits, parity, flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+#endif /* defined(CONFIG_PPC_MERGE) */
+
static struct uart_driver mpc52xx_uart_driver;
@@ -669,10 +785,11 @@ static struct console mpc52xx_console = {
.data = &mpc52xx_uart_driver,
};
-
-static int __init
+
+static int __init
mpc52xx_console_init(void)
{
+ mpc52xx_uart_of_enumerate();
register_console(&mpc52xx_console);
return 0;
}
@@ -700,6 +817,7 @@ static struct uart_driver mpc52xx_uart_driver = {
};
+#if !defined(CONFIG_PPC_MERGE)
/* ======================================================================== */
/* Platform Driver */
/* ======================================================================== */
@@ -723,8 +841,6 @@ mpc52xx_uart_probe(struct platform_device *dev)
/* Init the port structure */
port = &mpc52xx_uart_ports[idx];
- memset(port, 0x00, sizeof(struct uart_port));
-
spin_lock_init(&port->lock);
port->uartclk = __res.bi_ipbfreq / 2; /* Look at CTLR doc */
port->fifosize = 512;
@@ -733,6 +849,7 @@ mpc52xx_uart_probe(struct platform_device *dev)
( uart_console(port) ? 0 : UPF_IOREMAP );
port->line = idx;
port->ops = &mpc52xx_uart_ops;
+ port->dev = &dev->dev;
/* Search for IRQ and mapbase */
for (i=0 ; i<dev->num_resources ; i++, res++) {
@@ -771,7 +888,7 @@ mpc52xx_uart_suspend(struct platform_device *dev, pm_message_t state)
{
struct uart_port *port = (struct uart_port *) platform_get_drvdata(dev);
- if (sport)
+ if (port)
uart_suspend_port(&mpc52xx_uart_driver, port);
return 0;
@@ -789,6 +906,7 @@ mpc52xx_uart_resume(struct platform_device *dev)
}
#endif
+
static struct platform_driver mpc52xx_uart_platform_driver = {
.probe = mpc52xx_uart_probe,
.remove = mpc52xx_uart_remove,
@@ -800,6 +918,184 @@ static struct platform_driver mpc52xx_uart_platform_driver = {
.name = "mpc52xx-psc",
},
};
+#endif /* !defined(CONFIG_PPC_MERGE) */
+
+
+#if defined(CONFIG_PPC_MERGE)
+/* ======================================================================== */
+/* OF Platform Driver */
+/* ======================================================================== */
+
+static int __devinit
+mpc52xx_uart_of_probe(struct of_device *op, const struct of_device_id *match)
+{
+ int idx = -1;
+ unsigned int ipb_freq;
+ struct uart_port *port = NULL;
+ struct resource res;
+ int ret;
+
+ dev_dbg(&op->dev, "mpc52xx_uart_probe(op=%p, match=%p)\n", op, match);
+
+ /* Check validity & presence */
+ for (idx = 0; idx < MPC52xx_PSC_MAXNUM; idx++)
+ if (mpc52xx_uart_nodes[idx] == op->node)
+ break;
+ if (idx >= MPC52xx_PSC_MAXNUM)
+ return -EINVAL;
+ pr_debug("Found %s assigned to ttyPSC%x\n",
+ mpc52xx_uart_nodes[idx]->full_name, idx);
+
+ /* Search for bus-frequency property in this node or a parent */
+ if ((ipb_freq = mpc52xx_find_ipb_freq(op->node)) == 0) {
+ dev_dbg(&op->dev, "Could not find IPB bus frequency!\n");
+ return -EINVAL;
+ }
+
+ /* Init the port structure */
+ port = &mpc52xx_uart_ports[idx];
+
+ spin_lock_init(&port->lock);
+ port->uartclk = ipb_freq / 2;
+ port->fifosize = 512;
+ port->iotype = UPIO_MEM;
+ port->flags = UPF_BOOT_AUTOCONF |
+ ( uart_console(port) ? 0 : UPF_IOREMAP );
+ port->line = idx;
+ port->ops = &mpc52xx_uart_ops;
+ port->dev = &op->dev;
+
+ /* Search for IRQ and mapbase */
+ if ((ret = of_address_to_resource(op->node, 0, &res)) != 0)
+ return ret;
+
+ port->mapbase = res.start;
+ port->irq = irq_of_parse_and_map(op->node, 0);
+
+ dev_dbg(&op->dev, "mpc52xx-psc uart at %lx, irq=%x, freq=%i\n",
+ port->mapbase, port->irq, port->uartclk);
+
+ if ((port->irq==NO_IRQ) || !port->mapbase) {
+ printk(KERN_ERR "Could not allocate resources for PSC\n");
+ return -EINVAL;
+ }
+
+ /* Add the port to the uart sub-system */
+ ret = uart_add_one_port(&mpc52xx_uart_driver, port);
+ if (!ret)
+ dev_set_drvdata(&op->dev, (void*)port);
+
+ return ret;
+}
+
+static int
+mpc52xx_uart_of_remove(struct of_device *op)
+{
+ struct uart_port *port = dev_get_drvdata(&op->dev);
+ dev_set_drvdata(&op->dev, NULL);
+
+ if (port)
+ uart_remove_one_port(&mpc52xx_uart_driver, port);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int
+mpc52xx_uart_of_suspend(struct of_device *op, pm_message_t state)
+{
+ struct uart_port *port = (struct uart_port *) dev_get_drvdata(&op->dev);
+
+ if (port)
+ uart_suspend_port(&mpc52xx_uart_driver, port);
+
+ return 0;
+}
+
+static int
+mpc52xx_uart_of_resume(struct of_device *op)
+{
+ struct uart_port *port = (struct uart_port *) dev_get_drvdata(&op->dev);
+
+ if (port)
+ uart_resume_port(&mpc52xx_uart_driver, port);
+
+ return 0;
+}
+#endif
+
+static void
+mpc52xx_uart_of_assign(struct device_node *np, int idx)
+{
+ int free_idx = -1;
+ int i;
+
+ /* Find the first free node */
+ for (i = 0; i < MPC52xx_PSC_MAXNUM; i++) {
+ if (mpc52xx_uart_nodes[i] == NULL) {
+ free_idx = i;
+ break;
+ }
+ }
+
+ if ((idx < 0) || (idx >= MPC52xx_PSC_MAXNUM))
+ idx = free_idx;
+
+ if (idx < 0)
+ return; /* No free slot; abort */
+
+ /* If the slot is already occupied, then swap slots */
+ if (mpc52xx_uart_nodes[idx] && (free_idx != -1))
+ mpc52xx_uart_nodes[free_idx] = mpc52xx_uart_nodes[idx];
+ mpc52xx_uart_nodes[i] = np;
+}
+
+static void
+mpc52xx_uart_of_enumerate(void)
+{
+ static int enum_done = 0;
+ struct device_node *np;
+ const unsigned int *devno;
+ int i;
+
+ if (enum_done)
+ return;
+
+ for_each_node_by_type(np, "serial") {
+ if (!of_match_node(mpc52xx_uart_of_match, np))
+ continue;
+
+ /* Is a particular device number requested? */
+ devno = get_property(np, "device_no", NULL);
+ mpc52xx_uart_of_assign(of_node_get(np), devno ? *devno : -1);
+ }
+
+ enum_done = 1;
+
+ for (i = 0; i < MPC52xx_PSC_MAXNUM; i++) {
+ if (mpc52xx_uart_nodes[i])
+ pr_debug("%s assigned to ttyPSC%x\n",
+ mpc52xx_uart_nodes[i]->full_name, i);
+ }
+}
+
+MODULE_DEVICE_TABLE(of, mpc52xx_uart_of_match);
+
+static struct of_platform_driver mpc52xx_uart_of_driver = {
+ .owner = THIS_MODULE,
+ .name = "mpc52xx-psc-uart",
+ .match_table = mpc52xx_uart_of_match,
+ .probe = mpc52xx_uart_of_probe,
+ .remove = mpc52xx_uart_of_remove,
+#ifdef CONFIG_PM
+ .suspend = mpc52xx_uart_of_suspend,
+ .resume = mpc52xx_uart_of_resume,
+#endif
+ .driver = {
+ .name = "mpc52xx-psc-uart",
+ },
+};
+#endif /* defined(CONFIG_PPC_MERGE) */
/* ======================================================================== */
@@ -811,22 +1107,45 @@ mpc52xx_uart_init(void)
{
int ret;
- printk(KERN_INFO "Serial: MPC52xx PSC driver\n");
+ printk(KERN_INFO "Serial: MPC52xx PSC UART driver\n");
- ret = uart_register_driver(&mpc52xx_uart_driver);
- if (ret == 0) {
- ret = platform_driver_register(&mpc52xx_uart_platform_driver);
- if (ret)
- uart_unregister_driver(&mpc52xx_uart_driver);
+ if ((ret = uart_register_driver(&mpc52xx_uart_driver)) != 0) {
+ printk(KERN_ERR "%s: uart_register_driver failed (%i)\n",
+ __FILE__, ret);
+ return ret;
}
- return ret;
+#if defined(CONFIG_PPC_MERGE)
+ mpc52xx_uart_of_enumerate();
+
+ ret = of_register_platform_driver(&mpc52xx_uart_of_driver);
+ if (ret) {
+ printk(KERN_ERR "%s: of_register_platform_driver failed (%i)\n",
+ __FILE__, ret);
+ uart_unregister_driver(&mpc52xx_uart_driver);
+ return ret;
+ }
+#else
+ ret = platform_driver_register(&mpc52xx_uart_platform_driver);
+ if (ret) {
+ printk(KERN_ERR "%s: platform_driver_register failed (%i)\n",
+ __FILE__, ret);
+ uart_unregister_driver(&mpc52xx_uart_driver);
+ return ret;
+ }
+#endif
+
+ return 0;
}
static void __exit
mpc52xx_uart_exit(void)
{
+#if defined(CONFIG_PPC_MERGE)
+ of_unregister_platform_driver(&mpc52xx_uart_of_driver);
+#else
platform_driver_unregister(&mpc52xx_uart_platform_driver);
+#endif
uart_unregister_driver(&mpc52xx_uart_driver);
}
diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index 8eea69f29989..29823bd60fb0 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -555,7 +555,7 @@ mpsc_sdma_start_tx(struct mpsc_port_info *pi)
if (!mpsc_sdma_tx_active(pi)) {
txre = (struct mpsc_tx_desc *)(pi->txr +
(pi->txr_tail * MPSC_TXRE_SIZE));
- dma_cache_sync((void *) txre, MPSC_TXRE_SIZE, DMA_FROM_DEVICE);
+ dma_cache_sync(pi->port.dev, (void *) txre, MPSC_TXRE_SIZE, DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
invalidate_dcache_range((ulong)txre,
@@ -931,7 +931,7 @@ mpsc_init_rings(struct mpsc_port_info *pi)
}
txre->link = cpu_to_be32(pi->txr_p); /* Wrap last back to first */
- dma_cache_sync((void *) pi->dma_region, MPSC_DMA_ALLOC_SIZE,
+ dma_cache_sync(pi->port.dev, (void *) pi->dma_region, MPSC_DMA_ALLOC_SIZE,
DMA_BIDIRECTIONAL);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
@@ -1005,7 +1005,7 @@ mpsc_rx_intr(struct mpsc_port_info *pi)
rxre = (struct mpsc_rx_desc *)(pi->rxr + (pi->rxr_posn*MPSC_RXRE_SIZE));
- dma_cache_sync((void *)rxre, MPSC_RXRE_SIZE, DMA_FROM_DEVICE);
+ dma_cache_sync(pi->port.dev, (void *)rxre, MPSC_RXRE_SIZE, DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
invalidate_dcache_range((ulong)rxre,
@@ -1029,7 +1029,7 @@ mpsc_rx_intr(struct mpsc_port_info *pi)
}
bp = pi->rxb + (pi->rxr_posn * MPSC_RXBE_SIZE);
- dma_cache_sync((void *) bp, MPSC_RXBE_SIZE, DMA_FROM_DEVICE);
+ dma_cache_sync(pi->port.dev, (void *) bp, MPSC_RXBE_SIZE, DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
invalidate_dcache_range((ulong)bp,
@@ -1098,7 +1098,7 @@ next_frame:
SDMA_DESC_CMDSTAT_F |
SDMA_DESC_CMDSTAT_L);
wmb();
- dma_cache_sync((void *)rxre, MPSC_RXRE_SIZE, DMA_BIDIRECTIONAL);
+ dma_cache_sync(pi->port.dev, (void *)rxre, MPSC_RXRE_SIZE, DMA_BIDIRECTIONAL);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
flush_dcache_range((ulong)rxre,
@@ -1109,7 +1109,7 @@ next_frame:
pi->rxr_posn = (pi->rxr_posn + 1) & (MPSC_RXR_ENTRIES - 1);
rxre = (struct mpsc_rx_desc *)(pi->rxr +
(pi->rxr_posn * MPSC_RXRE_SIZE));
- dma_cache_sync((void *)rxre, MPSC_RXRE_SIZE, DMA_FROM_DEVICE);
+ dma_cache_sync(pi->port.dev, (void *)rxre, MPSC_RXRE_SIZE, DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
invalidate_dcache_range((ulong)rxre,
@@ -1143,7 +1143,7 @@ mpsc_setup_tx_desc(struct mpsc_port_info *pi, u32 count, u32 intr)
SDMA_DESC_CMDSTAT_EI
: 0));
wmb();
- dma_cache_sync((void *) txre, MPSC_TXRE_SIZE, DMA_BIDIRECTIONAL);
+ dma_cache_sync(pi->port.dev, (void *) txre, MPSC_TXRE_SIZE, DMA_BIDIRECTIONAL);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
flush_dcache_range((ulong)txre,
@@ -1192,7 +1192,7 @@ mpsc_copy_tx_data(struct mpsc_port_info *pi)
else /* All tx data copied into ring bufs */
return;
- dma_cache_sync((void *) bp, MPSC_TXBE_SIZE, DMA_BIDIRECTIONAL);
+ dma_cache_sync(pi->port.dev, (void *) bp, MPSC_TXBE_SIZE, DMA_BIDIRECTIONAL);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
flush_dcache_range((ulong)bp,
@@ -1217,7 +1217,7 @@ mpsc_tx_intr(struct mpsc_port_info *pi)
txre = (struct mpsc_tx_desc *)(pi->txr +
(pi->txr_tail * MPSC_TXRE_SIZE));
- dma_cache_sync((void *) txre, MPSC_TXRE_SIZE, DMA_FROM_DEVICE);
+ dma_cache_sync(pi->port.dev, (void *) txre, MPSC_TXRE_SIZE, DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
invalidate_dcache_range((ulong)txre,
@@ -1235,7 +1235,7 @@ mpsc_tx_intr(struct mpsc_port_info *pi)
txre = (struct mpsc_tx_desc *)(pi->txr +
(pi->txr_tail * MPSC_TXRE_SIZE));
- dma_cache_sync((void *) txre, MPSC_TXRE_SIZE,
+ dma_cache_sync(pi->port.dev, (void *) txre, MPSC_TXRE_SIZE,
DMA_FROM_DEVICE);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
@@ -1652,7 +1652,7 @@ mpsc_console_write(struct console *co, const char *s, uint count)
count--;
}
- dma_cache_sync((void *) bp, MPSC_TXBE_SIZE, DMA_BIDIRECTIONAL);
+ dma_cache_sync(pi->port.dev, (void *) bp, MPSC_TXBE_SIZE, DMA_BIDIRECTIONAL);
#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
if (pi->cache_mgmt) /* GT642[46]0 Res #COMM-2 */
flush_dcache_range((ulong)bp,
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 00f9ffd69489..431433f4dd6d 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -723,7 +723,7 @@ static int serial_config(struct pcmcia_device * link)
u_char *buf;
cisparse_t *parse;
cistpl_cftable_entry_t *cf;
- int i, last_ret, last_fn;
+ int i;
DEBUG(0, "serial_config(0x%p)\n", link);
@@ -740,15 +740,6 @@ static int serial_config(struct pcmcia_device * link)
tuple->TupleOffset = 0;
tuple->TupleDataMax = 255;
tuple->Attributes = 0;
- /* Get configuration register information */
- tuple->DesiredTuple = CISTPL_CONFIG;
- last_ret = first_tuple(link, tuple, parse);
- if (last_ret != CS_SUCCESS) {
- last_fn = ParseTuple;
- goto cs_failed;
- }
- link->conf.ConfigBase = parse->config.base;
- link->conf.Present = parse->config.rmask[0];
/* Is this a compliant multifunction card? */
tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
@@ -757,27 +748,25 @@ static int serial_config(struct pcmcia_device * link)
/* Is this a multiport card? */
tuple->DesiredTuple = CISTPL_MANFID;
- if (first_tuple(link, tuple, parse) == CS_SUCCESS) {
- info->manfid = parse->manfid.manf;
- info->prodid = parse->manfid.card;
-
- for (i = 0; i < ARRAY_SIZE(quirks); i++)
- if ((quirks[i].manfid == ~0 ||
- quirks[i].manfid == info->manfid) &&
- (quirks[i].prodid == ~0 ||
- quirks[i].prodid == info->prodid)) {
- info->quirk = &quirks[i];
- break;
- }
- }
+ info->manfid = link->manf_id;
+ info->prodid = link->card_id;
+
+ for (i = 0; i < ARRAY_SIZE(quirks); i++)
+ if ((quirks[i].manfid == ~0 ||
+ quirks[i].manfid == info->manfid) &&
+ (quirks[i].prodid == ~0 ||
+ quirks[i].prodid == info->prodid)) {
+ info->quirk = &quirks[i];
+ break;
+ }
/* Another check for dual-serial cards: look for either serial or
multifunction cards that ask for appropriate IO port ranges */
tuple->DesiredTuple = CISTPL_FUNCID;
if ((info->multi == 0) &&
- ((first_tuple(link, tuple, parse) != CS_SUCCESS) ||
- (parse->funcid.func == CISTPL_FUNCID_MULTI) ||
- (parse->funcid.func == CISTPL_FUNCID_SERIAL))) {
+ (link->has_func_id) &&
+ ((link->func_id == CISTPL_FUNCID_MULTI) ||
+ (link->func_id == CISTPL_FUNCID_SERIAL))) {
tuple->DesiredTuple = CISTPL_CFTABLE_ENTRY;
if (first_tuple(link, tuple, parse) == CS_SUCCESS) {
if ((cf->io.nwin == 1) && (cf->io.win[0].len % 8 == 0))
@@ -814,8 +803,6 @@ static int serial_config(struct pcmcia_device * link)
kfree(cfg_mem);
return 0;
- cs_failed:
- cs_error(link, last_fn, last_ret);
failed:
serial_remove(link);
kfree(cfg_mem);
@@ -925,6 +912,30 @@ static struct pcmcia_device_id serial_ids[] = {
PCMCIA_DEVICE_CIS_PROD_ID123("ADVANTECH", "COMpad-32/85", "1.0", 0x96913a85, 0x8fbe92ae, 0x0877b627, "COMpad2.cis"),
PCMCIA_DEVICE_CIS_PROD_ID2("RS-COM 2P", 0xad20b156, "RS-COM-2P.cis"),
PCMCIA_DEVICE_CIS_MANF_CARD(0x0013, 0x0000, "GLOBETROTTER.cis"),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL100 1.00.",0x19ca78af,0xf964f42b),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL100",0x19ca78af,0x71d98e83),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL232 1.00.",0x19ca78af,0x69fb7490),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c1997.","SERIAL CARD: SL232",0x19ca78af,0xb6bc0235),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c2000.","SERIAL CARD: CF232",0x63f2e0bd,0xb9e175d3),
+ PCMCIA_DEVICE_PROD_ID12("ELAN DIGITAL SYSTEMS LTD, c2000.","SERIAL CARD: CF232-5",0x63f2e0bd,0xfce33442),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF232",0x3beb8cf2,0x171e7190),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF232-5",0x3beb8cf2,0x20da4262),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF428",0x3beb8cf2,0xea5dd57d),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: CF500",0x3beb8cf2,0xd77255fa),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: IC232",0x3beb8cf2,0x6a709903),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: SL232",0x3beb8cf2,0x18430676),
+ PCMCIA_DEVICE_PROD_ID12("Elan","Serial Port: XL232",0x3beb8cf2,0x6f933767),
+ PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: CF332",0x3beb8cf2,0x16dc1ba7),
+ PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL332",0x3beb8cf2,0x19816c41),
+ PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL385",0x3beb8cf2,0x64112029),
+ PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
+ PCMCIA_MFC_DEVICE_PROD_ID12(0,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc),
+ PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: CF332",0x3beb8cf2,0x16dc1ba7),
+ PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL332",0x3beb8cf2,0x19816c41),
+ PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL385",0x3beb8cf2,0x64112029),
+ PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
+ PCMCIA_MFC_DEVICE_PROD_ID12(2,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
+ PCMCIA_MFC_DEVICE_PROD_ID12(3,"Elan","Serial Port: SL432",0x3beb8cf2,0x1cce7ac4),
/* too generic */
/* PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0160, 0x0002), */
/* PCMCIA_MFC_DEVICE_MANF_CARD(1, 0x0160, 0x0002), */
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index cfcc3caf49d8..3b5f19ec2126 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -775,7 +775,7 @@ static int sci_notifier(struct notifier_block *self,
*
* Clean this up later..
*/
- clk = clk_get("module_clk");
+ clk = clk_get(NULL, "module_clk");
port->uartclk = clk_get_rate(clk) * 16;
clk_put(clk);
}
@@ -960,7 +960,7 @@ static void sci_set_termios(struct uart_port *port, struct termios *termios,
default:
{
#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- struct clk *clk = clk_get("module_clk");
+ struct clk *clk = clk_get(NULL, "module_clk");
t = SCBRR_VALUE(baud, clk_get_rate(clk));
clk_put(clk);
#else
@@ -1128,7 +1128,7 @@ static void __init sci_init_ports(void)
* XXX: We should use a proper SCI/SCIF clock
*/
{
- struct clk *clk = clk_get("module_clk");
+ struct clk *clk = clk_get(NULL, "module_clk");
sci_ports[i].port.uartclk = clk_get_rate(clk) * 16;
clk_put(clk);
}
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 7ee992146ae9..e4557cc4f74b 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -133,6 +133,20 @@
# define SCIF_ORER 0x0001 /* Overrun error bit */
# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
+# define SCSPTR0 0xfffe8020 /* 16 bit SCIF */
+# define SCSPTR1 0xfffe8820 /* 16 bit SCIF */
+# define SCSPTR2 0xfffe9020 /* 16 bit SCIF */
+# define SCSPTR3 0xfffe9820 /* 16 bit SCIF */
+# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+# define SCSPTR0 0xf8400020 /* 16 bit SCIF */
+# define SCSPTR1 0xf8410020 /* 16 bit SCIF */
+# define SCSPTR2 0xf8420020 /* 16 bit SCIF */
+# define SCIF_ORER 0x0001 /* overrun error bit */
+# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
+# define SCIF_ONLY
#else
# error CPU subtype not defined
#endif
@@ -365,6 +379,7 @@ SCIx_FNS(SCxSR, 0x08, 8, 0x10, 8, 0x08, 16, 0x10, 16, 0x04, 8)
SCIx_FNS(SCxRDR, 0x0a, 8, 0x14, 8, 0x0A, 8, 0x14, 8, 0x05, 8)
SCIF_FNS(SCFCR, 0x0c, 8, 0x18, 16)
#if defined(CONFIG_CPU_SUBTYPE_SH7760) || defined(CONFIG_CPU_SUBTYPE_SH7780)
+SCIF_FNS(SCFDR, 0x0e, 16, 0x1C, 16)
SCIF_FNS(SCTFDR, 0x0e, 16, 0x1C, 16)
SCIF_FNS(SCRFDR, 0x0e, 16, 0x20, 16)
SCIF_FNS(SCSPTR, 0, 0, 0x24, 16)
@@ -544,6 +559,28 @@ static inline int sci_rxd_in(struct uart_port *port)
if (port->mapbase == 0xffe10000)
return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+ if (port->mapbase == 0xfffe8000)
+ return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe8800)
+ return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe9000)
+ return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xfffe9800)
+ return ctrl_inw(SCSPTR3) & 0x0001 ? 1 : 0; /* SCIF */
+}
+#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
+static inline int sci_rxd_in(struct uart_port *port)
+{
+ if (port->mapbase == 0xf8400000)
+ return ctrl_inw(SCSPTR0) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xf8410000)
+ return ctrl_inw(SCSPTR1) & 0x0001 ? 1 : 0; /* SCIF */
+ if (port->mapbase == 0xf8420000)
+ return ctrl_inw(SCSPTR2) & 0x0001 ? 1 : 0; /* SCIF */
+}
#endif
/*
diff --git a/drivers/serial/uartlite.c b/drivers/serial/uartlite.c
new file mode 100644
index 000000000000..83690653b78b
--- /dev/null
+++ b/drivers/serial/uartlite.c
@@ -0,0 +1,505 @@
+/*
+ * uartlite.c: Serial driver for Xilinx uartlite serial controller
+ *
+ * Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/console.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/tty.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+
+#define ULITE_MAJOR 204
+#define ULITE_MINOR 187
+#define ULITE_NR_UARTS 4
+
+/* For register details see datasheet:
+ http://www.xilinx.com/bvdocs/ipcenter/data_sheet/opb_uartlite.pdf
+*/
+#define ULITE_RX 0x00
+#define ULITE_TX 0x04
+#define ULITE_STATUS 0x08
+#define ULITE_CONTROL 0x0c
+
+#define ULITE_REGION 16
+
+#define ULITE_STATUS_RXVALID 0x01
+#define ULITE_STATUS_RXFULL 0x02
+#define ULITE_STATUS_TXEMPTY 0x04
+#define ULITE_STATUS_TXFULL 0x08
+#define ULITE_STATUS_IE 0x10
+#define ULITE_STATUS_OVERRUN 0x20
+#define ULITE_STATUS_FRAME 0x40
+#define ULITE_STATUS_PARITY 0x80
+
+#define ULITE_CONTROL_RST_TX 0x01
+#define ULITE_CONTROL_RST_RX 0x02
+#define ULITE_CONTROL_IE 0x10
+
+
+static struct uart_port ports[ULITE_NR_UARTS];
+
+static int ulite_receive(struct uart_port *port, int stat)
+{
+ struct tty_struct *tty = port->info->tty;
+ unsigned char ch = 0;
+ char flag = TTY_NORMAL;
+
+ if ((stat & (ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN
+ | ULITE_STATUS_FRAME)) == 0)
+ return 0;
+
+ /* stats */
+ if (stat & ULITE_STATUS_RXVALID) {
+ port->icount.rx++;
+ ch = readb(port->membase + ULITE_RX);
+
+ if (stat & ULITE_STATUS_PARITY)
+ port->icount.parity++;
+ }
+
+ if (stat & ULITE_STATUS_OVERRUN)
+ port->icount.overrun++;
+
+ if (stat & ULITE_STATUS_FRAME)
+ port->icount.frame++;
+
+
+ /* drop byte with parity error if IGNPAR specificed */
+ if (stat & port->ignore_status_mask & ULITE_STATUS_PARITY)
+ stat &= ~ULITE_STATUS_RXVALID;
+
+ stat &= port->read_status_mask;
+
+ if (stat & ULITE_STATUS_PARITY)
+ flag = TTY_PARITY;
+
+
+ stat &= ~port->ignore_status_mask;
+
+ if (stat & ULITE_STATUS_RXVALID)
+ tty_insert_flip_char(tty, ch, flag);
+
+ if (stat & ULITE_STATUS_FRAME)
+ tty_insert_flip_char(tty, 0, TTY_FRAME);
+
+ if (stat & ULITE_STATUS_OVERRUN)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+ return 1;
+}
+
+static int ulite_transmit(struct uart_port *port, int stat)
+{
+ struct circ_buf *xmit = &port->info->xmit;
+
+ if (stat & ULITE_STATUS_TXFULL)
+ return 0;
+
+ if (port->x_char) {
+ writeb(port->x_char, port->membase + ULITE_TX);
+ port->x_char = 0;
+ port->icount.tx++;
+ return 1;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port))
+ return 0;
+
+ writeb(xmit->buf[xmit->tail], port->membase + ULITE_TX);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
+ port->icount.tx++;
+
+ /* wake up */
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+
+ return 1;
+}
+
+static irqreturn_t ulite_isr(int irq, void *dev_id)
+{
+ struct uart_port *port = (struct uart_port *)dev_id;
+ int busy;
+
+ do {
+ int stat = readb(port->membase + ULITE_STATUS);
+ busy = ulite_receive(port, stat);
+ busy |= ulite_transmit(port, stat);
+ } while (busy);
+
+ tty_flip_buffer_push(port->info->tty);
+
+ return IRQ_HANDLED;
+}
+
+static unsigned int ulite_tx_empty(struct uart_port *port)
+{
+ unsigned long flags;
+ unsigned int ret;
+
+ spin_lock_irqsave(&port->lock, flags);
+ ret = readb(port->membase + ULITE_STATUS);
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ return ret & ULITE_STATUS_TXEMPTY ? TIOCSER_TEMT : 0;
+}
+
+static unsigned int ulite_get_mctrl(struct uart_port *port)
+{
+ return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+}
+
+static void ulite_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ /* N/A */
+}
+
+static void ulite_stop_tx(struct uart_port *port)
+{
+ /* N/A */
+}
+
+static void ulite_start_tx(struct uart_port *port)
+{
+ ulite_transmit(port, readb(port->membase + ULITE_STATUS));
+}
+
+static void ulite_stop_rx(struct uart_port *port)
+{
+ /* don't forward any more data (like !CREAD) */
+ port->ignore_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_PARITY
+ | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
+}
+
+static void ulite_enable_ms(struct uart_port *port)
+{
+ /* N/A */
+}
+
+static void ulite_break_ctl(struct uart_port *port, int ctl)
+{
+ /* N/A */
+}
+
+static int ulite_startup(struct uart_port *port)
+{
+ int ret;
+
+ ret = request_irq(port->irq, ulite_isr,
+ IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "uartlite", port);
+ if (ret)
+ return ret;
+
+ writeb(ULITE_CONTROL_RST_RX | ULITE_CONTROL_RST_TX,
+ port->membase + ULITE_CONTROL);
+ writeb(ULITE_CONTROL_IE, port->membase + ULITE_CONTROL);
+
+ return 0;
+}
+
+static void ulite_shutdown(struct uart_port *port)
+{
+ writeb(0, port->membase + ULITE_CONTROL);
+ readb(port->membase + ULITE_CONTROL); /* dummy */
+ free_irq(port->irq, port);
+}
+
+static void ulite_set_termios(struct uart_port *port, struct termios *termios,
+ struct termios *old)
+{
+ unsigned long flags;
+ unsigned int baud;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ port->read_status_mask = ULITE_STATUS_RXVALID | ULITE_STATUS_OVERRUN
+ | ULITE_STATUS_TXFULL;
+
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |=
+ ULITE_STATUS_PARITY | ULITE_STATUS_FRAME;
+
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ port->ignore_status_mask |= ULITE_STATUS_PARITY
+ | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
+
+ /* ignore all characters if CREAD is not set */
+ if ((termios->c_cflag & CREAD) == 0)
+ port->ignore_status_mask |=
+ ULITE_STATUS_RXVALID | ULITE_STATUS_PARITY
+ | ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
+
+ /* update timeout */
+ baud = uart_get_baud_rate(port, termios, old, 0, 460800);
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static const char *ulite_type(struct uart_port *port)
+{
+ return port->type == PORT_UARTLITE ? "uartlite" : NULL;
+}
+
+static void ulite_release_port(struct uart_port *port)
+{
+ release_mem_region(port->mapbase, ULITE_REGION);
+ iounmap(port->membase);
+ port->membase = 0;
+}
+
+static int ulite_request_port(struct uart_port *port)
+{
+ if (!request_mem_region(port->mapbase, ULITE_REGION, "uartlite")) {
+ dev_err(port->dev, "Memory region busy\n");
+ return -EBUSY;
+ }
+
+ port->membase = ioremap(port->mapbase, ULITE_REGION);
+ if (!port->membase) {
+ dev_err(port->dev, "Unable to map registers\n");
+ release_mem_region(port->mapbase, ULITE_REGION);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static void ulite_config_port(struct uart_port *port, int flags)
+{
+ ulite_request_port(port);
+ port->type = PORT_UARTLITE;
+}
+
+static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ /* we don't want the core code to modify any port params */
+ return -EINVAL;
+}
+
+static struct uart_ops ulite_ops = {
+ .tx_empty = ulite_tx_empty,
+ .set_mctrl = ulite_set_mctrl,
+ .get_mctrl = ulite_get_mctrl,
+ .stop_tx = ulite_stop_tx,
+ .start_tx = ulite_start_tx,
+ .stop_rx = ulite_stop_rx,
+ .enable_ms = ulite_enable_ms,
+ .break_ctl = ulite_break_ctl,
+ .startup = ulite_startup,
+ .shutdown = ulite_shutdown,
+ .set_termios = ulite_set_termios,
+ .type = ulite_type,
+ .release_port = ulite_release_port,
+ .request_port = ulite_request_port,
+ .config_port = ulite_config_port,
+ .verify_port = ulite_verify_port
+};
+
+#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE
+static void ulite_console_wait_tx(struct uart_port *port)
+{
+ int i;
+
+ /* wait up to 10ms for the character(s) to be sent */
+ for (i = 0; i < 10000; i++) {
+ if (readb(port->membase + ULITE_STATUS) & ULITE_STATUS_TXEMPTY)
+ break;
+ udelay(1);
+ }
+}
+
+static void ulite_console_putchar(struct uart_port *port, int ch)
+{
+ ulite_console_wait_tx(port);
+ writeb(ch, port->membase + ULITE_TX);
+}
+
+static void ulite_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ struct uart_port *port = &ports[co->index];
+ unsigned long flags;
+ unsigned int ier;
+ int locked = 1;
+
+ if (oops_in_progress) {
+ locked = spin_trylock_irqsave(&port->lock, flags);
+ } else
+ spin_lock_irqsave(&port->lock, flags);
+
+ /* save and disable interrupt */
+ ier = readb(port->membase + ULITE_STATUS) & ULITE_STATUS_IE;
+ writeb(0, port->membase + ULITE_CONTROL);
+
+ uart_console_write(port, s, count, ulite_console_putchar);
+
+ ulite_console_wait_tx(port);
+
+ /* restore interrupt state */
+ if (ier)
+ writeb(ULITE_CONTROL_IE, port->membase + ULITE_CONTROL);
+
+ if (locked)
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+static int __init ulite_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ if (co->index < 0 || co->index >= ULITE_NR_UARTS)
+ return -EINVAL;
+
+ port = &ports[co->index];
+
+ /* not initialized yet? */
+ if (!port->membase)
+ return -ENODEV;
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct uart_driver ulite_uart_driver;
+
+static struct console ulite_console = {
+ .name = "ttyUL",
+ .write = ulite_console_write,
+ .device = uart_console_device,
+ .setup = ulite_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1, /* Specified on the cmdline (e.g. console=ttyUL0 ) */
+ .data = &ulite_uart_driver,
+};
+
+static int __init ulite_console_init(void)
+{
+ register_console(&ulite_console);
+ return 0;
+}
+
+console_initcall(ulite_console_init);
+
+#endif /* CONFIG_SERIAL_UARTLITE_CONSOLE */
+
+static struct uart_driver ulite_uart_driver = {
+ .owner = THIS_MODULE,
+ .driver_name = "uartlite",
+ .dev_name = "ttyUL",
+ .major = ULITE_MAJOR,
+ .minor = ULITE_MINOR,
+ .nr = ULITE_NR_UARTS,
+#ifdef CONFIG_SERIAL_UARTLITE_CONSOLE
+ .cons = &ulite_console,
+#endif
+};
+
+static int __devinit ulite_probe(struct platform_device *pdev)
+{
+ struct resource *res, *res2;
+ struct uart_port *port;
+
+ if (pdev->id < 0 || pdev->id >= ULITE_NR_UARTS)
+ return -EINVAL;
+
+ if (ports[pdev->id].membase)
+ return -EBUSY;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ res2 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res2)
+ return -ENODEV;
+
+ port = &ports[pdev->id];
+
+ port->fifosize = 16;
+ port->regshift = 2;
+ port->iotype = UPIO_MEM;
+ port->iobase = 1; /* mark port in use */
+ port->mapbase = res->start;
+ port->membase = 0;
+ port->ops = &ulite_ops;
+ port->irq = res2->start;
+ port->flags = UPF_BOOT_AUTOCONF;
+ port->dev = &pdev->dev;
+ port->type = PORT_UNKNOWN;
+ port->line = pdev->id;
+
+ uart_add_one_port(&ulite_uart_driver, port);
+ platform_set_drvdata(pdev, port);
+
+ return 0;
+}
+
+static int ulite_remove(struct platform_device *pdev)
+{
+ struct uart_port *port = platform_get_drvdata(pdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (port)
+ uart_remove_one_port(&ulite_uart_driver, port);
+
+ /* mark port as free */
+ port->membase = 0;
+
+ return 0;
+}
+
+static struct platform_driver ulite_platform_driver = {
+ .probe = ulite_probe,
+ .remove = ulite_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "uartlite",
+ },
+};
+
+int __init ulite_init(void)
+{
+ int ret;
+
+ ret = uart_register_driver(&ulite_uart_driver);
+ if (ret)
+ return ret;
+
+ ret = platform_driver_register(&ulite_platform_driver);
+ if (ret)
+ uart_unregister_driver(&ulite_uart_driver);
+
+ return ret;
+}
+
+void __exit ulite_exit(void)
+{
+ platform_driver_unregister(&ulite_platform_driver);
+ uart_unregister_driver(&ulite_uart_driver);
+}
+
+module_init(ulite_init);
+module_exit(ulite_exit);
+
+MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
+MODULE_DESCRIPTION("Xilinx uartlite serial driver");
+MODULE_LICENSE("GPL");