*
* SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
*
- * Copyright (C) 2002 - 2006 Paul Mundt
+ * Copyright (C) 2002 - 2008 Paul Mundt
* Modified to support SH7720 SCIF. Markus Brunner, Mark Jonas (Jul 2007).
*
* based off of the old drivers/char/sh-sci.c by:
#include <linux/cpufreq.h>
#include <linux/clk.h>
#include <linux/ctype.h>
+#include <linux/err.h>
+#include <linux/list.h>
#ifdef CONFIG_SUPERH
-#include <asm/clock.h>
#include <asm/sh_bios.h>
-#include <asm/kgdb.h>
+#endif
+
+#ifdef CONFIG_H8300
+#include <asm/gpio.h>
#endif
#include "sh-sci.h"
/* Port IRQs: ERI, RXI, TXI, BRI (optional) */
unsigned int irqs[SCIx_NR_IRQS];
- /* Port pin configuration */
- void (*init_pins)(struct uart_port *port,
- unsigned int cflag);
-
/* Port enable callback */
void (*enable)(struct uart_port *port);
struct timer_list break_timer;
int break_flag;
-#ifdef CONFIG_SUPERH
- /* Port clock */
- struct clk *clk;
-#endif
-};
+ /* Interface clock */
+ struct clk *iclk;
+ /* Data clock */
+ struct clk *dclk;
-#ifdef CONFIG_SH_KGDB
-static struct sci_port *kgdb_sci_port;
-#endif
+ struct list_head node;
+};
-#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
-static struct sci_port *serial_console_port;
-#endif
+struct sh_sci_priv {
+ spinlock_t lock;
+ struct list_head ports;
+ struct notifier_block clk_nb;
+};
/* Function prototypes */
static void sci_stop_tx(struct uart_port *port);
static struct sci_port sci_ports[SCI_NPORTS];
static struct uart_driver sci_uart_driver;
-#if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) && \
- defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
+static inline struct sci_port *
+to_sci_port(struct uart_port *uart)
+{
+ return container_of(uart, struct sci_port, port);
+}
+
+#if defined(CONFIG_CONSOLE_POLL) || defined(CONFIG_SERIAL_SH_SCI_CONSOLE)
+
+#ifdef CONFIG_CONSOLE_POLL
static inline void handle_error(struct uart_port *port)
{
/* Clear error flags */
sci_out(port, SCxSR, SCxSR_ERROR_CLEAR(port));
}
-static int get_char(struct uart_port *port)
+static int sci_poll_get_char(struct uart_port *port)
{
- unsigned long flags;
unsigned short status;
int c;
- spin_lock_irqsave(&port->lock, flags);
do {
status = sci_in(port, SCxSR);
if (status & SCxSR_ERRORS(port)) {
continue;
}
} while (!(status & SCxSR_RDxF(port)));
+
c = sci_in(port, SCxRDR);
- sci_in(port, SCxSR); /* Dummy read */
+
+ /* Dummy read */
+ sci_in(port, SCxSR);
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
- spin_unlock_irqrestore(&port->lock, flags);
return c;
}
-#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
+#endif
-#if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) || defined(CONFIG_SH_KGDB)
-static void put_char(struct uart_port *port, char c)
+static void sci_poll_put_char(struct uart_port *port, unsigned char c)
{
- unsigned long flags;
unsigned short status;
- spin_lock_irqsave(&port->lock, flags);
-
do {
status = sci_in(port, SCxSR);
} while (!(status & SCxSR_TDxE(port)));
sci_out(port, SCxTDR, c);
- sci_in(port, SCxSR); /* Dummy read */
- sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
-
- spin_unlock_irqrestore(&port->lock, flags);
+ sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
}
-#endif
-
-#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
-static void put_string(struct sci_port *sci_port, const char *buffer, int count)
-{
- struct uart_port *port = &sci_port->port;
- const unsigned char *p = buffer;
- int i;
-
-#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
- int checksum;
- int usegdb=0;
+#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
-#ifdef CONFIG_SH_STANDARD_BIOS
- /* This call only does a trap the first time it is
- * called, and so is safe to do here unconditionally
- */
- usegdb |= sh_bios_in_gdb_mode();
-#endif
-#ifdef CONFIG_SH_KGDB
- usegdb |= (kgdb_in_gdb_mode && (sci_port == kgdb_sci_port));
-#endif
-
- if (usegdb) {
- /* $<packet info>#<checksum>. */
- do {
- unsigned char c;
- put_char(port, '$');
- put_char(port, 'O'); /* 'O'utput to console */
- checksum = 'O';
-
- for (i=0; i<count; i++) { /* Don't use run length encoding */
- int h, l;
-
- c = *p++;
- h = hex_asc_hi(c);
- l = hex_asc_lo(c);
- put_char(port, h);
- put_char(port, l);
- checksum += h + l;
- }
- put_char(port, '#');
- put_char(port, hex_asc_hi(checksum));
- put_char(port, hex_asc_lo(checksum));
- } while (get_char(port) != '+');
- } else
-#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
- for (i=0; i<count; i++) {
- if (*p == 10)
- put_char(port, '\r');
- put_char(port, *p++);
- }
-}
-#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */
-
-#ifdef CONFIG_SH_KGDB
-static int kgdb_sci_getchar(void)
-{
- int c;
-
- /* Keep trying to read a character, this could be neater */
- while ((c = get_char(&kgdb_sci_port->port)) < 0)
- cpu_relax();
-
- return c;
-}
-
-static inline void kgdb_sci_putchar(int c)
-{
- put_char(&kgdb_sci_port->port, c);
-}
-#endif /* CONFIG_SH_KGDB */
-
-#if defined(__H8300S__)
-enum { sci_disable, sci_enable };
-
-static void h8300_sci_config(struct uart_port* port, unsigned int ctrl)
-{
- volatile unsigned char *mstpcrl=(volatile unsigned char *)MSTPCRL;
- int ch = (port->mapbase - SMR0) >> 3;
- unsigned char mask = 1 << (ch+1);
-
- if (ctrl == sci_disable) {
- *mstpcrl |= mask;
- } else {
- *mstpcrl &= ~mask;
- }
-}
-
-static inline void h8300_sci_enable(struct uart_port *port)
-{
- h8300_sci_config(port, sci_enable);
-}
-
-static inline void h8300_sci_disable(struct uart_port *port)
-{
- h8300_sci_config(port, sci_disable);
-}
-#endif
-
-#if defined(SCI_ONLY) || defined(SCI_AND_SCIF) && \
- defined(__H8300H__) || defined(__H8300S__)
-static void sci_init_pins_sci(struct uart_port* port, unsigned int cflag)
+#if defined(__H8300H__) || defined(__H8300S__)
+static void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
int ch = (port->mapbase - SMR0) >> 3;
/* tx mark output*/
H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx;
}
-#else
-#define sci_init_pins_sci NULL
-#endif
-
-#if defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
-static void sci_init_pins_irda(struct uart_port *port, unsigned int cflag)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
- unsigned int fcr_val = 0;
-
- if (cflag & CRTSCTS)
- fcr_val |= SCFCR_MCE;
-
- sci_out(port, SCFCR, fcr_val);
-}
-#else
-#define sci_init_pins_irda NULL
-#endif
-
-#ifdef SCI_ONLY
-#define sci_init_pins_scif NULL
-#endif
-
-#if defined(SCIF_ONLY) || defined(SCI_AND_SCIF)
-#if defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
-static void sci_init_pins_scif(struct uart_port* port, unsigned int cflag)
-{
- unsigned int fcr_val = 0;
-
- set_sh771x_scif_pfc(port);
- if (cflag & CRTSCTS) {
- fcr_val |= SCFCR_MCE;
- }
- sci_out(port, SCFCR, fcr_val);
+ if (port->mapbase == 0xA4400000) {
+ __raw_writew(__raw_readw(PACR) & 0xffc0, PACR);
+ __raw_writew(__raw_readw(PBCR) & 0x0fff, PBCR);
+ } else if (port->mapbase == 0xA4410000)
+ __raw_writew(__raw_readw(PBCR) & 0xf003, PBCR);
}
#elif defined(CONFIG_CPU_SUBTYPE_SH7720) || defined(CONFIG_CPU_SUBTYPE_SH7721)
-static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
- unsigned int fcr_val = 0;
unsigned short data;
if (cflag & CRTSCTS) {
/* enable RTS/CTS */
if (port->mapbase == 0xa4430000) { /* SCIF0 */
/* Clear PTCR bit 9-2; enable all scif pins but sck */
- data = ctrl_inw(PORT_PTCR);
- ctrl_outw((data & 0xfc03), PORT_PTCR);
+ data = __raw_readw(PORT_PTCR);
+ __raw_writew((data & 0xfc03), PORT_PTCR);
} else if (port->mapbase == 0xa4438000) { /* SCIF1 */
/* Clear PVCR bit 9-2 */
- data = ctrl_inw(PORT_PVCR);
- ctrl_outw((data & 0xfc03), PORT_PVCR);
+ data = __raw_readw(PORT_PVCR);
+ __raw_writew((data & 0xfc03), PORT_PVCR);
}
- fcr_val |= SCFCR_MCE;
} else {
if (port->mapbase == 0xa4430000) { /* SCIF0 */
/* Clear PTCR bit 5-2; enable only tx and rx */
- data = ctrl_inw(PORT_PTCR);
- ctrl_outw((data & 0xffc3), PORT_PTCR);
+ data = __raw_readw(PORT_PTCR);
+ __raw_writew((data & 0xffc3), PORT_PTCR);
} else if (port->mapbase == 0xa4438000) { /* SCIF1 */
/* Clear PVCR bit 5-2 */
- data = ctrl_inw(PORT_PVCR);
- ctrl_outw((data & 0xffc3), PORT_PVCR);
+ data = __raw_readw(PORT_PVCR);
+ __raw_writew((data & 0xffc3), PORT_PVCR);
}
}
- sci_out(port, SCFCR, fcr_val);
}
#elif defined(CONFIG_CPU_SH3)
/* For SH7705, SH7706, SH7707, SH7709, SH7709A, SH7729 */
-static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
- unsigned int fcr_val = 0;
unsigned short data;
/* We need to set SCPCR to enable RTS/CTS */
- data = ctrl_inw(SCPCR);
+ data = __raw_readw(SCPCR);
/* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/
- ctrl_outw(data & 0x0fcf, SCPCR);
+ __raw_writew(data & 0x0fcf, SCPCR);
- if (cflag & CRTSCTS)
- fcr_val |= SCFCR_MCE;
- else {
+ if (!(cflag & CRTSCTS)) {
/* We need to set SCPCR to enable RTS/CTS */
- data = ctrl_inw(SCPCR);
+ data = __raw_readw(SCPCR);
/* Clear out SCP7MD1,0, SCP4MD1,0,
Set SCP6MD1,0 = {01} (output) */
- ctrl_outw((data & 0x0fcf) | 0x1000, SCPCR);
+ __raw_writew((data & 0x0fcf) | 0x1000, SCPCR);
data = ctrl_inb(SCPDR);
/* Set /RTS2 (bit6) = 0 */
ctrl_outb(data & 0xbf, SCPDR);
}
-
- sci_out(port, SCFCR, fcr_val);
}
#elif defined(CONFIG_CPU_SUBTYPE_SH7722)
-static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
- unsigned int fcr_val = 0;
unsigned short data;
if (port->mapbase == 0xffe00000) {
- data = ctrl_inw(PSCR);
+ data = __raw_readw(PSCR);
data &= ~0x03cf;
- if (cflag & CRTSCTS)
- fcr_val |= SCFCR_MCE;
- else
+ if (!(cflag & CRTSCTS))
data |= 0x0340;
- ctrl_outw(data, PSCR);
+ __raw_writew(data, PSCR);
}
- /* SCIF1 and SCIF2 should be setup by board code */
-
- sci_out(port, SCFCR, fcr_val);
}
-#elif defined(CONFIG_CPU_SUBTYPE_SH7723)
-static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
-{
- /* Nothing to do here.. */
- sci_out(port, SCFCR, 0);
-}
-#else
-/* For SH7750 */
-static void sci_init_pins_scif(struct uart_port *port, unsigned int cflag)
-{
- unsigned int fcr_val = 0;
-
- if (cflag & CRTSCTS) {
- fcr_val |= SCFCR_MCE;
- } else {
-#if defined(CONFIG_CPU_SUBTYPE_SH7343) || defined(CONFIG_CPU_SUBTYPE_SH7366)
- /* Nothing */
-#elif defined(CONFIG_CPU_SUBTYPE_SH7763) || \
+#elif defined(CONFIG_CPU_SUBTYPE_SH7757) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7763) || \
defined(CONFIG_CPU_SUBTYPE_SH7780) || \
defined(CONFIG_CPU_SUBTYPE_SH7785) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7786) || \
defined(CONFIG_CPU_SUBTYPE_SHX3)
- ctrl_outw(0x0080, SCSPTR0); /* Set RTS = 1 */
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
+{
+ if (!(cflag & CRTSCTS))
+ __raw_writew(0x0080, SCSPTR0); /* Set RTS = 1 */
+}
+#elif defined(CONFIG_CPU_SH4) && !defined(CONFIG_CPU_SH4A)
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
+{
+ if (!(cflag & CRTSCTS))
+ __raw_writew(0x0080, SCSPTR2); /* Set RTS = 1 */
+}
#else
- ctrl_outw(0x0080, SCSPTR2); /* Set RTS = 1 */
-#endif
- }
- sci_out(port, SCFCR, fcr_val);
+static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
+{
+ /* Nothing to do */
}
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
defined(CONFIG_CPU_SUBTYPE_SH7780) || \
- defined(CONFIG_CPU_SUBTYPE_SH7785)
+ defined(CONFIG_CPU_SUBTYPE_SH7785) || \
+ defined(CONFIG_CPU_SUBTYPE_SH7786)
static inline int scif_txroom(struct uart_port *port)
{
return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0xff);
#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
static inline int scif_txroom(struct uart_port *port)
{
- if((port->mapbase == 0xffe00000) || (port->mapbase == 0xffe08000)) /* SCIF0/1*/
+ if ((port->mapbase == 0xffe00000) ||
+ (port->mapbase == 0xffe08000)) {
+ /* SCIF0/1*/
return SCIF_TXROOM_MAX - (sci_in(port, SCTFDR) & 0xff);
- else /* SCIF2 */
+ } else {
+ /* SCIF2 */
return SCIF2_TXROOM_MAX - (sci_in(port, SCFDR) >> 8);
+ }
}
static inline int scif_rxroom(struct uart_port *port)
{
- if((port->mapbase == 0xffe00000) || (port->mapbase == 0xffe08000)) /* SCIF0/1*/
+ if ((port->mapbase == 0xffe00000) ||
+ (port->mapbase == 0xffe08000)) {
+ /* SCIF0/1*/
return sci_in(port, SCRFDR) & 0xff;
- else /* SCIF2 */
+ } else {
+ /* SCIF2 */
return sci_in(port, SCFDR) & SCIF2_RFDC_MASK;
+ }
}
#else
static inline int scif_txroom(struct uart_port *port)
return sci_in(port, SCFDR) & SCIF_RFDC_MASK;
}
#endif
-#endif /* SCIF_ONLY || SCI_AND_SCIF */
static inline int sci_txroom(struct uart_port *port)
{
- return ((sci_in(port, SCxSR) & SCI_TDRE) != 0);
+ return (sci_in(port, SCxSR) & SCI_TDRE) != 0;
}
static inline int sci_rxroom(struct uart_port *port)
{
- return ((sci_in(port, SCxSR) & SCxSR_RDxF(port)) != 0);
+ return (sci_in(port, SCxSR) & SCxSR_RDxF(port)) != 0;
}
/* ********************************************************************** *
static void sci_transmit_chars(struct uart_port *port)
{
- struct circ_buf *xmit = &port->info->xmit;
+ struct circ_buf *xmit = &port->state->xmit;
unsigned int stopped = uart_tx_stopped(port);
unsigned short status;
unsigned short ctrl;
status = sci_in(port, SCxSR);
if (!(status & SCxSR_TDxE(port))) {
ctrl = sci_in(port, SCSCR);
- if (uart_circ_empty(xmit)) {
+ if (uart_circ_empty(xmit))
ctrl &= ~SCI_CTRL_FLAGS_TIE;
- } else {
+ else
ctrl |= SCI_CTRL_FLAGS_TIE;
- }
sci_out(port, SCSCR, ctrl);
return;
}
-#ifndef SCI_ONLY
- if (port->type == PORT_SCIF)
- count = scif_txroom(port);
- else
-#endif
+ if (port->type == PORT_SCI)
count = sci_txroom(port);
+ else
+ count = scif_txroom(port);
do {
unsigned char c;
} else {
ctrl = sci_in(port, SCSCR);
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF) {
+ if (port->type != PORT_SCI) {
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port));
}
-#endif
ctrl |= SCI_CTRL_FLAGS_TIE;
sci_out(port, SCSCR, ctrl);
}
/* On SH3, SCIF may read end-of-break as a space->mark char */
-#define STEPFN(c) ({int __c=(c); (((__c-1)|(__c)) == -1); })
+#define STEPFN(c) ({int __c = (c); (((__c-1)|(__c)) == -1); })
static inline void sci_receive_chars(struct uart_port *port)
{
- struct sci_port *sci_port = (struct sci_port *)port;
- struct tty_struct *tty = port->info->port.tty;
+ struct sci_port *sci_port = to_sci_port(port);
+ struct tty_struct *tty = port->state->port.tty;
int i, count, copied = 0;
unsigned short status;
unsigned char flag;
return;
while (1) {
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF)
- count = scif_rxroom(port);
- else
-#endif
+ if (port->type == PORT_SCI)
count = sci_rxroom(port);
+ else
+ count = scif_rxroom(port);
/* Don't copy more bytes than there is room for in the buffer */
count = tty_buffer_request_room(tty, count);
if (port->type == PORT_SCI) {
char c = sci_in(port, SCxRDR);
- if (uart_handle_sysrq_char(port, c) || sci_port->break_flag)
+ if (uart_handle_sysrq_char(port, c) ||
+ sci_port->break_flag)
count = 0;
- else {
+ else
tty_insert_flip_char(tty, c, TTY_NORMAL);
- }
} else {
- for (i=0; i<count; i++) {
+ for (i = 0; i < count; i++) {
char c = sci_in(port, SCxRDR);
status = sci_in(port, SCxSR);
#if defined(CONFIG_CPU_SH3)
}
/* Nonzero => end-of-break */
- pr_debug("scif: debounce<%02x>\n", c);
+ dev_dbg(port->dev, "debounce<%02x>\n", c);
sci_port->break_flag = 0;
if (STEPFN(c)) {
/* Store data and status */
if (status&SCxSR_FER(port)) {
flag = TTY_FRAME;
- pr_debug("sci: frame error\n");
+ dev_notice(port->dev, "frame error\n");
} else if (status&SCxSR_PER(port)) {
flag = TTY_PARITY;
- pr_debug("sci: parity error\n");
+ dev_notice(port->dev, "parity error\n");
} else
flag = TTY_NORMAL;
+
tty_insert_flip_char(tty, c, flag);
}
}
{
int copied = 0;
unsigned short status = sci_in(port, SCxSR);
- struct tty_struct *tty = port->info->port.tty;
+ struct tty_struct *tty = port->state->port.tty;
if (status & SCxSR_ORER(port)) {
/* overrun error */
if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
copied++;
- pr_debug("sci: overrun error\n");
+
+ dev_notice(port->dev, "overrun error");
}
if (status & SCxSR_FER(port)) {
if (sci_rxd_in(port) == 0) {
/* Notify of BREAK */
- struct sci_port *sci_port = (struct sci_port *)port;
+ struct sci_port *sci_port = to_sci_port(port);
if (!sci_port->break_flag) {
sci_port->break_flag = 1;
/* Do sysrq handling. */
if (uart_handle_break(port))
return 0;
- pr_debug("sci: BREAK detected\n");
+
+ dev_dbg(port->dev, "BREAK detected\n");
+
if (tty_insert_flip_char(tty, 0, TTY_BREAK))
- copied++;
- }
+ copied++;
+ }
+
} else {
/* frame error */
if (tty_insert_flip_char(tty, 0, TTY_FRAME))
copied++;
- pr_debug("sci: frame error\n");
+
+ dev_notice(port->dev, "frame error\n");
}
}
/* parity error */
if (tty_insert_flip_char(tty, 0, TTY_PARITY))
copied++;
- pr_debug("sci: parity error\n");
+
+ dev_notice(port->dev, "parity error");
}
if (copied)
return copied;
}
+static inline int sci_handle_fifo_overrun(struct uart_port *port)
+{
+ struct tty_struct *tty = port->state->port.tty;
+ int copied = 0;
+
+ if (port->type != PORT_SCIF)
+ return 0;
+
+ if ((sci_in(port, SCLSR) & SCIF_ORER) != 0) {
+ sci_out(port, SCLSR, 0);
+
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_flip_buffer_push(tty);
+
+ dev_notice(port->dev, "overrun error\n");
+ copied++;
+ }
+
+ return copied;
+}
+
static inline int sci_handle_breaks(struct uart_port *port)
{
int copied = 0;
unsigned short status = sci_in(port, SCxSR);
- struct tty_struct *tty = port->info->port.tty;
- struct sci_port *s = &sci_ports[port->line];
+ struct tty_struct *tty = port->state->port.tty;
+ struct sci_port *s = to_sci_port(port);
if (uart_handle_break(port))
return 0;
/* Notify of BREAK */
if (tty_insert_flip_char(tty, 0, TTY_BREAK))
copied++;
- pr_debug("sci: BREAK detected\n");
- }
-#if defined(SCIF_ORER)
- /* XXX: Handle SCIF overrun error */
- if (port->type == PORT_SCIF && (sci_in(port, SCLSR) & SCIF_ORER) != 0) {
- sci_out(port, SCLSR, 0);
- if (tty_insert_flip_char(tty, 0, TTY_OVERRUN)) {
- copied++;
- pr_debug("sci: overrun error\n");
- }
+ dev_dbg(port->dev, "BREAK detected\n");
}
-#endif
if (copied)
tty_flip_buffer_push(tty);
+ copied += sci_handle_fifo_overrun(port);
+
return copied;
}
static irqreturn_t sci_tx_interrupt(int irq, void *ptr)
{
struct uart_port *port = ptr;
+ unsigned long flags;
- spin_lock_irq(&port->lock);
+ spin_lock_irqsave(&port->lock, flags);
sci_transmit_chars(port);
- spin_unlock_irq(&port->lock);
+ spin_unlock_irqrestore(&port->lock, flags);
return IRQ_HANDLED;
}
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
}
} else {
-#if defined(SCIF_ORER)
- if((sci_in(port, SCLSR) & SCIF_ORER) != 0) {
- struct tty_struct *tty = port->info->port.tty;
-
- sci_out(port, SCLSR, 0);
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- tty_flip_buffer_push(tty);
- pr_debug("scif: overrun error\n");
- }
-#endif
+ sci_handle_fifo_overrun(port);
sci_rx_interrupt(irq, ptr);
}
static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
{
- unsigned short ssr_status, scr_status;
- struct uart_port *port = ptr;
+ unsigned short ssr_status, scr_status, err_enabled;
+ struct uart_port *port = ptr;
+ irqreturn_t ret = IRQ_NONE;
- ssr_status = sci_in(port,SCxSR);
- scr_status = sci_in(port,SCSCR);
+ ssr_status = sci_in(port, SCxSR);
+ scr_status = sci_in(port, SCSCR);
+ err_enabled = scr_status & (SCI_CTRL_FLAGS_REIE | SCI_CTRL_FLAGS_RIE);
/* Tx Interrupt */
- if ((ssr_status & 0x0020) && (scr_status & 0x0080))
- sci_tx_interrupt(irq, ptr);
+ if ((ssr_status & SCxSR_TDxE(port)) && (scr_status & SCI_CTRL_FLAGS_TIE))
+ ret = sci_tx_interrupt(irq, ptr);
/* Rx Interrupt */
- if ((ssr_status & 0x0002) && (scr_status & 0x0040))
- sci_rx_interrupt(irq, ptr);
+ if ((ssr_status & SCxSR_RDxF(port)) && (scr_status & SCI_CTRL_FLAGS_RIE))
+ ret = sci_rx_interrupt(irq, ptr);
/* Error Interrupt */
- if ((ssr_status & 0x0080) && (scr_status & 0x0400))
- sci_er_interrupt(irq, ptr);
+ if ((ssr_status & SCxSR_ERRORS(port)) && err_enabled)
+ ret = sci_er_interrupt(irq, ptr);
/* Break Interrupt */
- if ((ssr_status & 0x0010) && (scr_status & 0x0200))
- sci_br_interrupt(irq, ptr);
+ if ((ssr_status & SCxSR_BRK(port)) && err_enabled)
+ ret = sci_br_interrupt(irq, ptr);
- return IRQ_HANDLED;
+ return ret;
}
-#ifdef CONFIG_CPU_FREQ
/*
* Here we define a transistion notifier so that we can update all of our
* ports' baud rate when the peripheral clock changes.
static int sci_notifier(struct notifier_block *self,
unsigned long phase, void *p)
{
- struct cpufreq_freqs *freqs = p;
- int i;
+ struct sh_sci_priv *priv = container_of(self,
+ struct sh_sci_priv, clk_nb);
+ struct sci_port *sci_port;
+ unsigned long flags;
if ((phase == CPUFREQ_POSTCHANGE) ||
- (phase == CPUFREQ_RESUMECHANGE)){
- for (i = 0; i < SCI_NPORTS; i++) {
- struct uart_port *port = &sci_ports[i].port;
- struct clk *clk;
-
- /*
- * Update the uartclk per-port if frequency has
- * changed, since it will no longer necessarily be
- * consistent with the old frequency.
- *
- * Really we want to be able to do something like
- * uart_change_speed() or something along those lines
- * here to implicitly reset the per-port baud rate..
- *
- * Clean this up later..
- */
- clk = clk_get(NULL, "module_clk");
- port->uartclk = clk_get_rate(clk) * 16;
- clk_put(clk);
- }
-
- printk(KERN_INFO "%s: got a postchange notification "
- "for cpu %d (old %d, new %d)\n",
- __func__, freqs->cpu, freqs->old, freqs->new);
+ (phase == CPUFREQ_RESUMECHANGE)) {
+ spin_lock_irqsave(&priv->lock, flags);
+ list_for_each_entry(sci_port, &priv->ports, node)
+ sci_port->port.uartclk = clk_get_rate(sci_port->dclk);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
return NOTIFY_OK;
}
-static struct notifier_block sci_nb = { &sci_notifier, NULL, 0 };
-#endif /* CONFIG_CPU_FREQ */
+static void sci_clk_enable(struct uart_port *port)
+{
+ struct sci_port *sci_port = to_sci_port(port);
+
+ clk_enable(sci_port->dclk);
+ sci_port->port.uartclk = clk_get_rate(sci_port->dclk);
+
+ if (sci_port->iclk)
+ clk_enable(sci_port->iclk);
+}
+
+static void sci_clk_disable(struct uart_port *port)
+{
+ struct sci_port *sci_port = to_sci_port(port);
+
+ if (sci_port->iclk)
+ clk_disable(sci_port->iclk);
+
+ clk_disable(sci_port->dclk);
+}
static int sci_request_irq(struct sci_port *port)
{
"SCI Transmit Data Empty", "SCI Break" };
if (port->irqs[0] == port->irqs[1]) {
- if (!port->irqs[0]) {
- printk(KERN_ERR "sci: Cannot allocate irq.(IRQ=0)\n");
+ if (unlikely(!port->irqs[0]))
return -ENODEV;
- }
if (request_irq(port->irqs[0], sci_mpxed_interrupt,
IRQF_DISABLED, "sci", port)) {
- printk(KERN_ERR "sci: Cannot allocate irq.\n");
+ dev_err(port->port.dev, "Can't allocate IRQ\n");
return -ENODEV;
}
} else {
for (i = 0; i < ARRAY_SIZE(handlers); i++) {
- if (!port->irqs[i])
+ if (unlikely(!port->irqs[i]))
continue;
+
if (request_irq(port->irqs[i], handlers[i],
IRQF_DISABLED, desc[i], port)) {
- printk(KERN_ERR "sci: Cannot allocate irq.\n");
+ dev_err(port->port.dev, "Can't allocate IRQ\n");
return -ENODEV;
}
}
{
int i;
- if (port->irqs[0] == port->irqs[1]) {
- if (!port->irqs[0])
- printk("sci: sci_free_irq error\n");
- else
- free_irq(port->irqs[0], port);
- } else {
+ if (port->irqs[0] == port->irqs[1])
+ free_irq(port->irqs[0], port);
+ else {
for (i = 0; i < ARRAY_SIZE(port->irqs); i++) {
if (!port->irqs[i])
continue;
static unsigned int sci_tx_empty(struct uart_port *port)
{
- /* Can't detect */
- return TIOCSER_TEMT;
+ unsigned short status = sci_in(port, SCxSR);
+ return status & SCxSR_TEND(port) ? TIOCSER_TEMT : 0;
}
static void sci_set_mctrl(struct uart_port *port, unsigned int mctrl)
static int sci_startup(struct uart_port *port)
{
- struct sci_port *s = &sci_ports[port->line];
+ struct sci_port *s = to_sci_port(port);
if (s->enable)
s->enable(port);
-#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- s->clk = clk_get(NULL, "module_clk");
-#endif
-
sci_request_irq(s);
sci_start_tx(port);
sci_start_rx(port, 1);
static void sci_shutdown(struct uart_port *port)
{
- struct sci_port *s = &sci_ports[port->line];
+ struct sci_port *s = to_sci_port(port);
sci_stop_rx(port);
sci_stop_tx(port);
if (s->disable)
s->disable(port);
-
-#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- clk_put(s->clk);
- s->clk = NULL;
-#endif
}
static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
- struct sci_port *s = &sci_ports[port->line];
unsigned int status, baud, smr_val;
- int t;
+ int t = -1;
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
-
- switch (baud) {
- case 0:
- t = -1;
- break;
- default:
- {
-#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- t = SCBRR_VALUE(baud, clk_get_rate(s->clk));
-#else
- t = SCBRR_VALUE(baud);
-#endif
- break;
- }
- }
+ if (likely(baud))
+ t = SCBRR_VALUE(baud, port->uartclk);
do {
status = sci_in(port, SCxSR);
sci_out(port, SCSCR, 0x00); /* TE=0, RE=0, CKE1=0 */
-#if !defined(SCI_ONLY)
- if (port->type == PORT_SCIF)
+ if (port->type != PORT_SCI)
sci_out(port, SCFCR, SCFCR_RFRST | SCFCR_TFRST);
-#endif
smr_val = sci_in(port, SCSMR) & 3;
if ((termios->c_cflag & CSIZE) == CS7)
sci_out(port, SCSMR, smr_val);
if (t > 0) {
- if(t >= 256) {
+ if (t >= 256) {
sci_out(port, SCSMR, (sci_in(port, SCSMR) & ~3) | 1);
t >>= 2;
- } else {
+ } else
sci_out(port, SCSMR, sci_in(port, SCSMR) & ~3);
- }
+
sci_out(port, SCBRR, t);
udelay((1000000+(baud-1)) / baud); /* Wait one bit interval */
}
- if (likely(s->init_pins))
- s->init_pins(port, termios->c_cflag);
+ sci_init_pins(port, termios->c_cflag);
+ sci_out(port, SCFCR, (termios->c_cflag & CRTSCTS) ? SCFCR_MCE : 0);
sci_out(port, SCSCR, SCSCR_INIT(port));
if ((termios->c_cflag & CREAD) != 0)
- sci_start_rx(port,0);
+ sci_start_rx(port, 0);
}
static const char *sci_type(struct uart_port *port)
{
switch (port->type) {
- case PORT_SCI: return "sci";
- case PORT_SCIF: return "scif";
- case PORT_IRDA: return "irda";
+ case PORT_IRDA:
+ return "irda";
+ case PORT_SCI:
+ return "sci";
+ case PORT_SCIF:
+ return "scif";
+ case PORT_SCIFA:
+ return "scifa";
}
- return 0;
+ return NULL;
}
static void sci_release_port(struct uart_port *port)
static void sci_config_port(struct uart_port *port, int flags)
{
- struct sci_port *s = &sci_ports[port->line];
+ struct sci_port *s = to_sci_port(port);
port->type = s->type;
- switch (port->type) {
- case PORT_SCI:
- s->init_pins = sci_init_pins_sci;
- break;
- case PORT_SCIF:
- s->init_pins = sci_init_pins_scif;
- break;
- case PORT_IRDA:
- s->init_pins = sci_init_pins_irda;
- break;
- }
+ if (port->membase)
+ return;
-#if defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
- if (port->mapbase == 0)
- port->mapbase = onchip_remap(SCIF_ADDR_SH5, 1024, "SCIF");
+ if (port->flags & UPF_IOREMAP) {
+ port->membase = ioremap_nocache(port->mapbase, 0x40);
- port->membase = (void __iomem *)port->mapbase;
-#endif
+ if (IS_ERR(port->membase))
+ dev_err(port->dev, "can't remap port#%d\n", port->line);
+ } else {
+ /*
+ * For the simple (and majority of) cases where we don't
+ * need to do any remapping, just cast the cookie
+ * directly.
+ */
+ port->membase = (void __iomem *)port->mapbase;
+ }
}
static int sci_verify_port(struct uart_port *port, struct serial_struct *ser)
{
- struct sci_port *s = &sci_ports[port->line];
+ struct sci_port *s = to_sci_port(port);
if (ser->irq != s->irqs[SCIx_TXI_IRQ] || ser->irq > nr_irqs)
return -EINVAL;
.request_port = sci_request_port,
.config_port = sci_config_port,
.verify_port = sci_verify_port,
+#ifdef CONFIG_CONSOLE_POLL
+ .poll_get_char = sci_poll_get_char,
+ .poll_put_char = sci_poll_put_char,
+#endif
};
-static void __init sci_init_ports(void)
+static void __devinit sci_init_single(struct platform_device *dev,
+ struct sci_port *sci_port,
+ unsigned int index,
+ struct plat_sci_port *p)
{
- static int first = 1;
- int i;
+ sci_port->port.ops = &sci_uart_ops;
+ sci_port->port.iotype = UPIO_MEM;
+ sci_port->port.line = index;
+ sci_port->port.fifosize = 1;
+ sci_port->iclk = p->clk ? clk_get(&dev->dev, p->clk) : NULL;
+ sci_port->dclk = clk_get(&dev->dev, "peripheral_clk");
+ sci_port->enable = sci_clk_enable;
+ sci_port->disable = sci_clk_disable;
- if (!first)
- return;
+ sci_port->break_timer.data = (unsigned long)sci_port;
+ sci_port->break_timer.function = sci_break_timer;
+ init_timer(&sci_port->break_timer);
- first = 0;
+ sci_port->port.mapbase = p->mapbase;
+ sci_port->port.membase = p->membase;
- for (i = 0; i < SCI_NPORTS; i++) {
- sci_ports[i].port.ops = &sci_uart_ops;
- sci_ports[i].port.iotype = UPIO_MEM;
- sci_ports[i].port.line = i;
- sci_ports[i].port.fifosize = 1;
+ sci_port->port.irq = p->irqs[SCIx_TXI_IRQ];
+ sci_port->port.flags = p->flags;
+ sci_port->port.dev = &dev->dev;
+ sci_port->type = sci_port->port.type = p->type;
-#if defined(__H8300H__) || defined(__H8300S__)
-#ifdef __H8300S__
- sci_ports[i].enable = h8300_sci_enable;
- sci_ports[i].disable = h8300_sci_disable;
-#endif
- sci_ports[i].port.uartclk = CONFIG_CPU_CLOCK;
-#elif defined(CONFIG_SUPERH64)
- sci_ports[i].port.uartclk = current_cpu_data.module_clock * 16;
-#else
- /*
- * XXX: We should use a proper SCI/SCIF clock
- */
- {
- struct clk *clk = clk_get(NULL, "module_clk");
- sci_ports[i].port.uartclk = clk_get_rate(clk) * 16;
- clk_put(clk);
- }
-#endif
-
- sci_ports[i].break_timer.data = (unsigned long)&sci_ports[i];
- sci_ports[i].break_timer.function = sci_break_timer;
-
- init_timer(&sci_ports[i].break_timer);
- }
+ memcpy(&sci_port->irqs, &p->irqs, sizeof(p->irqs));
}
-int __init early_sci_setup(struct uart_port *port)
+#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
+static struct tty_driver *serial_console_device(struct console *co, int *index)
{
- if (unlikely(port->line > SCI_NPORTS))
- return -ENODEV;
-
- sci_init_ports();
-
- sci_ports[port->line].port.membase = port->membase;
- sci_ports[port->line].port.mapbase = port->mapbase;
- sci_ports[port->line].port.type = port->type;
+ struct uart_driver *p = &sci_uart_driver;
+ *index = co->index;
+ return p->tty_driver;
+}
- return 0;
+static void serial_console_putchar(struct uart_port *port, int ch)
+{
+ sci_poll_put_char(port, ch);
}
-#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
/*
* Print a string to the serial port trying not to disturb
* any possible real use of the port...
static void serial_console_write(struct console *co, const char *s,
unsigned count)
{
- put_string(serial_console_port, s, count);
+ struct uart_port *port = co->data;
+ struct sci_port *sci_port = to_sci_port(port);
+ unsigned short bits;
+
+ if (sci_port->enable)
+ sci_port->enable(port);
+
+ uart_console_write(port, s, count, serial_console_putchar);
+
+ /* wait until fifo is empty and last bit has been transmitted */
+ bits = SCxSR_TDxE(port) | SCxSR_TEND(port);
+ while ((sci_in(port, SCxSR) & bits) != bits)
+ cpu_relax();
+
+ if (sci_port->disable)
+ sci_port->disable(port);
}
static int __init serial_console_setup(struct console *co, char *options)
{
+ struct sci_port *sci_port;
struct uart_port *port;
int baud = 115200;
int bits = 8;
if (co->index >= SCI_NPORTS)
co->index = 0;
- serial_console_port = &sci_ports[co->index];
- port = &serial_console_port->port;
+ sci_port = &sci_ports[co->index];
+ port = &sci_port->port;
+ co->data = port;
/*
* Also need to check port->type, we don't actually have any
*/
if (!port->type)
return -ENODEV;
- if (!port->membase || !port->mapbase)
- return -ENODEV;
-
- port->type = serial_console_port->type;
-#if defined(CONFIG_SUPERH) && !defined(CONFIG_SUPERH64)
- if (!serial_console_port->clk)
- serial_console_port->clk = clk_get(NULL, "module_clk");
-#endif
-
- if (port->flags & UPF_IOREMAP)
- sci_config_port(port, 0);
+ sci_config_port(port, 0);
- if (serial_console_port->enable)
- serial_console_port->enable(port);
+ if (sci_port->enable)
+ sci_port->enable(port);
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
if (ret == 0)
sci_stop_rx(port);
#endif
+ /* TODO: disable clock */
return ret;
}
static struct console serial_console = {
.name = "ttySC",
- .device = uart_console_device,
+ .device = serial_console_device,
.write = serial_console_write,
.setup = serial_console_setup,
.flags = CON_PRINTBUFFER,
.index = -1,
- .data = &sci_uart_driver,
};
static int __init sci_console_init(void)
{
- sci_init_ports();
register_console(&serial_console);
return 0;
}
console_initcall(sci_console_init);
#endif /* CONFIG_SERIAL_SH_SCI_CONSOLE */
-#ifdef CONFIG_SH_KGDB_CONSOLE
-/*
- * FIXME: Most of this can go away.. at the moment, we rely on
- * arch/sh/kernel/setup.c to do the command line parsing for kgdb, though
- * most of that can easily be done here instead.
- *
- * For the time being, just accept the values that were parsed earlier..
- */
-static void __init kgdb_console_get_options(struct uart_port *port, int *baud,
- int *parity, int *bits)
-{
- *baud = kgdb_baud;
- *parity = tolower(kgdb_parity);
- *bits = kgdb_bits - '0';
-}
-
-/*
- * The naming here is somewhat misleading, since kgdb_console_setup() takes
- * care of the early-on initialization for kgdb, regardless of whether we
- * actually use kgdb as a console or not.
- *
- * On the plus side, this lets us kill off the old kgdb_sci_setup() nonsense.
- */
-int __init kgdb_console_setup(struct console *co, char *options)
-{
- struct uart_port *port = &sci_ports[kgdb_portnum].port;
- int baud = 38400;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- if (co->index != kgdb_portnum)
- co->index = kgdb_portnum;
-
- kgdb_sci_port = &sci_ports[co->index];
- port = &kgdb_sci_port->port;
-
- /*
- * Also need to check port->type, we don't actually have any
- * UPIO_PORT ports, but uart_report_port() handily misreports
- * it anyways if we don't have a port available by the time this is
- * called.
- */
- if (!port->type)
- return -ENODEV;
- if (!port->membase || !port->mapbase)
- return -ENODEV;
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- kgdb_console_get_options(port, &baud, &parity, &bits);
-
- kgdb_getchar = kgdb_sci_getchar;
- kgdb_putchar = kgdb_sci_putchar;
-
- return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct console kgdb_console = {
- .name = "ttySC",
- .device = uart_console_device,
- .write = kgdb_console_write,
- .setup = kgdb_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &sci_uart_driver,
-};
-
-/* Register the KGDB console so we get messages (d'oh!) */
-static int __init kgdb_console_init(void)
-{
- sci_init_ports();
- register_console(&kgdb_console);
- return 0;
-}
-console_initcall(kgdb_console_init);
-#endif /* CONFIG_SH_KGDB_CONSOLE */
-
-#if defined(CONFIG_SH_KGDB_CONSOLE)
-#define SCI_CONSOLE &kgdb_console
-#elif defined(CONFIG_SERIAL_SH_SCI_CONSOLE)
-#define SCI_CONSOLE &serial_console
+#if defined(CONFIG_SERIAL_SH_SCI_CONSOLE)
+#define SCI_CONSOLE (&serial_console)
#else
#define SCI_CONSOLE 0
#endif
.cons = SCI_CONSOLE,
};
+
+static int sci_remove(struct platform_device *dev)
+{
+ struct sh_sci_priv *priv = platform_get_drvdata(dev);
+ struct sci_port *p;
+ unsigned long flags;
+
+ cpufreq_unregister_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ list_for_each_entry(p, &priv->ports, node)
+ uart_remove_one_port(&sci_uart_driver, &p->port);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ kfree(priv);
+ return 0;
+}
+
+static int __devinit sci_probe_single(struct platform_device *dev,
+ unsigned int index,
+ struct plat_sci_port *p,
+ struct sci_port *sciport)
+{
+ struct sh_sci_priv *priv = platform_get_drvdata(dev);
+ unsigned long flags;
+ int ret;
+
+ /* Sanity check */
+ if (unlikely(index >= SCI_NPORTS)) {
+ dev_notice(&dev->dev, "Attempting to register port "
+ "%d when only %d are available.\n",
+ index+1, SCI_NPORTS);
+ dev_notice(&dev->dev, "Consider bumping "
+ "CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
+ return 0;
+ }
+
+ sci_init_single(dev, sciport, index, p);
+
+ ret = uart_add_one_port(&sci_uart_driver, &sciport->port);
+ if (ret)
+ return ret;
+
+ INIT_LIST_HEAD(&sciport->node);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ list_add(&sciport->node, &priv->ports);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
/*
* Register a set of serial devices attached to a platform device. The
* list is terminated with a zero flags entry, which means we expect
static int __devinit sci_probe(struct platform_device *dev)
{
struct plat_sci_port *p = dev->dev.platform_data;
- int i;
+ struct sh_sci_priv *priv;
+ int i, ret = -EINVAL;
- for (i = 0; p && p->flags != 0; p++, i++) {
- struct sci_port *sciport = &sci_ports[i];
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
- /* Sanity check */
- if (unlikely(i == SCI_NPORTS)) {
- dev_notice(&dev->dev, "Attempting to register port "
- "%d when only %d are available.\n",
- i+1, SCI_NPORTS);
- dev_notice(&dev->dev, "Consider bumping "
- "CONFIG_SERIAL_SH_SCI_NR_UARTS!\n");
- break;
- }
-
- sciport->port.mapbase = p->mapbase;
-
- /*
- * For the simple (and majority of) cases where we don't need
- * to do any remapping, just cast the cookie directly.
- */
- if (p->mapbase && !p->membase && !(p->flags & UPF_IOREMAP))
- p->membase = (void __iomem *)p->mapbase;
+ INIT_LIST_HEAD(&priv->ports);
+ spin_lock_init(&priv->lock);
+ platform_set_drvdata(dev, priv);
- sciport->port.membase = p->membase;
+ priv->clk_nb.notifier_call = sci_notifier;
+ cpufreq_register_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
- sciport->port.irq = p->irqs[SCIx_TXI_IRQ];
- sciport->port.flags = p->flags;
- sciport->port.dev = &dev->dev;
-
- sciport->type = sciport->port.type = p->type;
-
- memcpy(&sciport->irqs, &p->irqs, sizeof(p->irqs));
-
- uart_add_one_port(&sci_uart_driver, &sciport->port);
+ if (dev->id != -1) {
+ ret = sci_probe_single(dev, dev->id, p, &sci_ports[dev->id]);
+ if (ret)
+ goto err_unreg;
+ } else {
+ for (i = 0; p && p->flags != 0; p++, i++) {
+ ret = sci_probe_single(dev, i, p, &sci_ports[i]);
+ if (ret)
+ goto err_unreg;
+ }
}
-#if defined(CONFIG_SH_KGDB) && !defined(CONFIG_SH_KGDB_CONSOLE)
- kgdb_sci_port = &sci_ports[kgdb_portnum];
- kgdb_getchar = kgdb_sci_getchar;
- kgdb_putchar = kgdb_sci_putchar;
-#endif
-
-#ifdef CONFIG_CPU_FREQ
- cpufreq_register_notifier(&sci_nb, CPUFREQ_TRANSITION_NOTIFIER);
- dev_info(&dev->dev, "CPU frequency notifier registered\n");
-#endif
-
#ifdef CONFIG_SH_STANDARD_BIOS
sh_bios_gdb_detach();
#endif
return 0;
-}
-static int __devexit sci_remove(struct platform_device *dev)
-{
- int i;
-
- for (i = 0; i < SCI_NPORTS; i++)
- uart_remove_one_port(&sci_uart_driver, &sci_ports[i].port);
-
- return 0;
+err_unreg:
+ sci_remove(dev);
+ return ret;
}
-static int sci_suspend(struct platform_device *dev, pm_message_t state)
+static int sci_suspend(struct device *dev)
{
- int i;
+ struct sh_sci_priv *priv = dev_get_drvdata(dev);
+ struct sci_port *p;
+ unsigned long flags;
- for (i = 0; i < SCI_NPORTS; i++) {
- struct sci_port *p = &sci_ports[i];
-
- if (p->type != PORT_UNKNOWN && p->port.dev == &dev->dev)
- uart_suspend_port(&sci_uart_driver, &p->port);
- }
+ spin_lock_irqsave(&priv->lock, flags);
+ list_for_each_entry(p, &priv->ports, node)
+ uart_suspend_port(&sci_uart_driver, &p->port);
+ spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
-static int sci_resume(struct platform_device *dev)
+static int sci_resume(struct device *dev)
{
- int i;
-
- for (i = 0; i < SCI_NPORTS; i++) {
- struct sci_port *p = &sci_ports[i];
+ struct sh_sci_priv *priv = dev_get_drvdata(dev);
+ struct sci_port *p;
+ unsigned long flags;
- if (p->type != PORT_UNKNOWN && p->port.dev == &dev->dev)
- uart_resume_port(&sci_uart_driver, &p->port);
- }
+ spin_lock_irqsave(&priv->lock, flags);
+ list_for_each_entry(p, &priv->ports, node)
+ uart_resume_port(&sci_uart_driver, &p->port);
+ spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
-static struct platform_driver sci_driver = {
- .probe = sci_probe,
- .remove = __devexit_p(sci_remove),
+static const struct dev_pm_ops sci_dev_pm_ops = {
.suspend = sci_suspend,
.resume = sci_resume,
+};
+
+static struct platform_driver sci_driver = {
+ .probe = sci_probe,
+ .remove = sci_remove,
.driver = {
.name = "sh-sci",
.owner = THIS_MODULE,
+ .pm = &sci_dev_pm_ops,
},
};
printk(banner);
- sci_init_ports();
-
ret = uart_register_driver(&sci_uart_driver);
if (likely(ret == 0)) {
ret = platform_driver_register(&sci_driver);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff