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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:03:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-09 19:03:16 -0800
commit3a43aaa31790c36b69ebf8a6396f37fade86b531 (patch)
tree7c7f8da6219d546f2b44534cb7be1fb5591d6ac4 /drivers/serial
parentaed886ce777590eac87f7ce2897d9f8357754331 (diff)
parent6a5a0b9139b19dd1a107870269a35bc9cf18d2dc (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (137 commits) sh: include empty zero page in romImage sh: Make associative cache writes fatal on all SH-4A parts. sh: Drop associative writes for SH-4 cache flushes. sh: Partial revert of copy/clear_user_highpage() optimizations. sh: Add default uImage rule for se7724, ap325rxa, and migor. sh: allow runtime pm without suspend/resume callbacks sh: mach-ecovec24: Remove un-defined settings for VPU sh: mach-ecovec24: LCDC drive ability become high sh: fix sh7724 VEU3F resource size serial: sh-sci: Fix too early port disabling. sh: pfc: pr_info() -> pr_debug() cleanups. sh: pfc: Convert from ctrl_xxx() to __raw_xxx() I/O routines. sh: Improve kfr2r09 serial port setup code sh: Break out SuperH PFC code sh: Move KEYSC header file sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file sh: Add CPG save/restore code for sh7724 R-standby sh: Add SDHI power control support to Ecovec mfd: Add power control platform data to SDHI driver sh: mach-ecovec24: modify address map ...
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/Kconfig2
-rw-r--r--drivers/serial/sh-sci.c59
-rw-r--r--drivers/serial/sh-sci.h2
3 files changed, 6 insertions, 57 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 50943ff78f4b..9ff47db0b2ce 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -996,7 +996,7 @@ config SERIAL_IP22_ZILOG_CONSOLE
config SERIAL_SH_SCI
tristate "SuperH SCI(F) serial port support"
- depends on SUPERH || H8300
+ depends on HAVE_CLK && (SUPERH || H8300)
select SERIAL_CORE
config SERIAL_SH_SCI_NR_UARTS
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c
index 6498bd1fb6dd..ff38dbdb5c6e 100644
--- a/drivers/serial/sh-sci.c
+++ b/drivers/serial/sh-sci.c
@@ -50,7 +50,6 @@
#include <linux/list.h>
#ifdef CONFIG_SUPERH
-#include <asm/clock.h>
#include <asm/sh_bios.h>
#endif
@@ -79,22 +78,18 @@ struct sci_port {
struct timer_list break_timer;
int break_flag;
-#ifdef CONFIG_HAVE_CLK
/* Interface clock */
struct clk *iclk;
/* Data clock */
struct clk *dclk;
-#endif
+
struct list_head node;
};
struct sh_sci_priv {
spinlock_t lock;
struct list_head ports;
-
-#ifdef CONFIG_HAVE_CLK
struct notifier_block clk_nb;
-#endif
};
/* Function prototypes */
@@ -156,32 +151,6 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
}
#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
-#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 void h8300_sci_enable(struct uart_port *port)
-{
- h8300_sci_config(port, sci_enable);
-}
-
-static void h8300_sci_disable(struct uart_port *port)
-{
- h8300_sci_config(port, sci_disable);
-}
-#endif
-
#if defined(__H8300H__) || defined(__H8300S__)
static void sci_init_pins(struct uart_port *port, unsigned int cflag)
{
@@ -733,7 +702,6 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
return ret;
}
-#ifdef CONFIG_HAVE_CLK
/*
* Here we define a transistion notifier so that we can update all of our
* ports' baud rate when the peripheral clock changes.
@@ -751,7 +719,6 @@ static int sci_notifier(struct notifier_block *self,
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);
}
@@ -778,7 +745,6 @@ static void sci_clk_disable(struct uart_port *port)
clk_disable(sci_port->dclk);
}
-#endif
static int sci_request_irq(struct sci_port *port)
{
@@ -833,8 +799,8 @@ static void sci_free_irq(struct sci_port *port)
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)
@@ -1077,21 +1043,10 @@ static void __devinit sci_init_single(struct platform_device *dev,
sci_port->port.iotype = UPIO_MEM;
sci_port->port.line = index;
sci_port->port.fifosize = 1;
-
-#if defined(__H8300H__) || defined(__H8300S__)
-#ifdef __H8300S__
- sci_port->enable = h8300_sci_enable;
- sci_port->disable = h8300_sci_disable;
-#endif
- sci_port->port.uartclk = CONFIG_CPU_CLOCK;
-#elif defined(CONFIG_HAVE_CLK)
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;
-#else
-#error "Need a valid uartclk"
-#endif
sci_port->break_timer.data = (unsigned long)sci_port;
sci_port->break_timer.function = sci_break_timer;
@@ -1106,7 +1061,6 @@ static void __devinit sci_init_single(struct platform_device *dev,
sci_port->type = sci_port->port.type = p->type;
memcpy(&sci_port->irqs, &p->irqs, sizeof(p->irqs));
-
}
#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE
@@ -1239,14 +1193,11 @@ static int sci_remove(struct platform_device *dev)
struct sci_port *p;
unsigned long flags;
-#ifdef CONFIG_HAVE_CLK
cpufreq_unregister_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
-#endif
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);
@@ -1307,10 +1258,8 @@ static int __devinit sci_probe(struct platform_device *dev)
spin_lock_init(&priv->lock);
platform_set_drvdata(dev, priv);
-#ifdef CONFIG_HAVE_CLK
priv->clk_nb.notifier_call = sci_notifier;
cpufreq_register_notifier(&priv->clk_nb, CPUFREQ_TRANSITION_NOTIFIER);
-#endif
if (dev->id != -1) {
ret = sci_probe_single(dev, dev->id, p, &sci_ports[dev->id]);
@@ -1370,7 +1319,7 @@ static struct dev_pm_ops sci_dev_pm_ops = {
static struct platform_driver sci_driver = {
.probe = sci_probe,
- .remove = __devexit_p(sci_remove),
+ .remove = sci_remove,
.driver = {
.name = "sh-sci",
.owner = THIS_MODULE,
diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h
index 3e2fcf93b42e..a32094eeb42b 100644
--- a/drivers/serial/sh-sci.h
+++ b/drivers/serial/sh-sci.h
@@ -1,5 +1,5 @@
#include <linux/serial_core.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <linux/gpio.h>
#if defined(CONFIG_H83007) || defined(CONFIG_H83068)