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-rw-r--r--drivers/serial/8250.c16
-rw-r--r--drivers/serial/8250.h1
-rw-r--r--drivers/serial/atmel_serial.c32
-rw-r--r--drivers/serial/imx.c27
-rw-r--r--drivers/serial/pxa.c5
-rw-r--r--drivers/serial/serial_ks8695.c61
-rw-r--r--drivers/serial/sunhv.c2
-rw-r--r--drivers/serial/sunsab.c2
-rw-r--r--drivers/serial/sunsu.c2
-rw-r--r--drivers/serial/sunzilog.c2
10 files changed, 115 insertions, 35 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 342e12fb1c2..9ccc563d873 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1908,15 +1908,23 @@ static int serial8250_startup(struct uart_port *port)
* kick the UART on a regular basis.
*/
if (!(iir1 & UART_IIR_NO_INT) && (iir & UART_IIR_NO_INT)) {
+ up->bugs |= UART_BUG_THRE;
pr_debug("ttyS%d - using backup timer\n", port->line);
- up->timer.function = serial8250_backup_timeout;
- up->timer.data = (unsigned long)up;
- mod_timer(&up->timer, jiffies +
- poll_timeout(up->port.timeout) + HZ / 5);
}
}
/*
+ * The above check will only give an accurate result the first time
+ * the port is opened so this value needs to be preserved.
+ */
+ if (up->bugs & UART_BUG_THRE) {
+ up->timer.function = serial8250_backup_timeout;
+ up->timer.data = (unsigned long)up;
+ mod_timer(&up->timer, jiffies +
+ poll_timeout(up->port.timeout) + HZ / 5);
+ }
+
+ /*
* If the "interrupt" for this port doesn't correspond with any
* hardware interrupt, we use a timer-based system. The original
* driver used to do this with IRQ0.
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
index 78c00162b04..520260326f3 100644
--- a/drivers/serial/8250.h
+++ b/drivers/serial/8250.h
@@ -47,6 +47,7 @@ struct serial8250_config {
#define UART_BUG_QUOT (1 << 0) /* UART has buggy quot LSB */
#define UART_BUG_TXEN (1 << 1) /* UART has buggy TX IIR status */
#define UART_BUG_NOMSR (1 << 2) /* UART has buggy MSR status bits (Au1x00) */
+#define UART_BUG_THRE (1 << 3) /* UART has buggy THRE reassertion */
#define PROBE_RSA (1 << 0)
#define PROBE_ANY (~0)
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c
index 3a6da80b081..61fb8b6d19a 100644
--- a/drivers/serial/atmel_serial.c
+++ b/drivers/serial/atmel_serial.c
@@ -131,7 +131,8 @@ struct atmel_uart_char {
struct atmel_uart_port {
struct uart_port uart; /* uart */
struct clk *clk; /* uart clock */
- unsigned short suspended; /* is port suspended? */
+ int may_wakeup; /* cached value of device_may_wakeup for times we need to disable it */
+ u32 backup_imr; /* IMR saved during suspend */
int break_active; /* break being received */
short use_dma_rx; /* enable PDC receiver */
@@ -984,8 +985,15 @@ static void atmel_serial_pm(struct uart_port *port, unsigned int state,
* This is called on uart_open() or a resume event.
*/
clk_enable(atmel_port->clk);
+
+ /* re-enable interrupts if we disabled some on suspend */
+ UART_PUT_IER(port, atmel_port->backup_imr);
break;
case 3:
+ /* Back up the interrupt mask and disable all interrupts */
+ atmel_port->backup_imr = UART_GET_IMR(port);
+ UART_PUT_IDR(port, -1);
+
/*
* Disable the peripheral clock for this serial port.
* This is called on uart_close() or a suspend event.
@@ -1475,13 +1483,12 @@ static int atmel_serial_suspend(struct platform_device *pdev,
cpu_relax();
}
- if (device_may_wakeup(&pdev->dev)
- && !atmel_serial_clk_will_stop())
- enable_irq_wake(port->irq);
- else {
- uart_suspend_port(&atmel_uart, port);
- atmel_port->suspended = 1;
- }
+ /* we can not wake up if we're running on slow clock */
+ atmel_port->may_wakeup = device_may_wakeup(&pdev->dev);
+ if (atmel_serial_clk_will_stop())
+ device_set_wakeup_enable(&pdev->dev, 0);
+
+ uart_suspend_port(&atmel_uart, port);
return 0;
}
@@ -1491,11 +1498,8 @@ static int atmel_serial_resume(struct platform_device *pdev)
struct uart_port *port = platform_get_drvdata(pdev);
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
- if (atmel_port->suspended) {
- uart_resume_port(&atmel_uart, port);
- atmel_port->suspended = 0;
- } else
- disable_irq_wake(port->irq);
+ uart_resume_port(&atmel_uart, port);
+ device_set_wakeup_enable(&pdev->dev, atmel_port->may_wakeup);
return 0;
}
@@ -1513,6 +1517,8 @@ static int __devinit atmel_serial_probe(struct platform_device *pdev)
BUILD_BUG_ON(!is_power_of_2(ATMEL_SERIAL_RINGSIZE));
port = &atmel_ports[pdev->id];
+ port->backup_imr = 0;
+
atmel_init_port(port, pdev);
if (!atmel_use_dma_rx(&port->uart)) {
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 6a29f9330a7..3f90f1bbbbc 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -127,8 +127,13 @@
#define UCR3_RXDSEN (1<<6) /* Receive status interrupt enable */
#define UCR3_AIRINTEN (1<<5) /* Async IR wake interrupt enable */
#define UCR3_AWAKEN (1<<4) /* Async wake interrupt enable */
-#define UCR3_REF25 (1<<3) /* Ref freq 25 MHz */
-#define UCR3_REF30 (1<<2) /* Ref Freq 30 MHz */
+#ifdef CONFIG_ARCH_IMX
+#define UCR3_REF25 (1<<3) /* Ref freq 25 MHz, only on mx1 */
+#define UCR3_REF30 (1<<2) /* Ref Freq 30 MHz, only on mx1 */
+#endif
+#if defined CONFIG_ARCH_MX2 || defined CONFIG_ARCH_MX3
+#define UCR3_RXDMUXSEL (1<<2) /* RXD Muxed Input Select, on mx2/mx3 */
+#endif
#define UCR3_INVT (1<<1) /* Inverted Infrared transmission */
#define UCR3_BPEN (1<<0) /* Preset registers enable */
#define UCR4_CTSTL_32 (32<<10) /* CTS trigger level (32 chars) */
@@ -445,7 +450,7 @@ static irqreturn_t imx_int(int irq, void *dev_id)
readl(sport->port.membase + UCR1) & UCR1_TXMPTYEN)
imx_txint(irq, dev_id);
- if (sts & USR1_RTSS)
+ if (sts & USR1_RTSD)
imx_rtsint(irq, dev_id);
return IRQ_HANDLED;
@@ -598,6 +603,12 @@ static int imx_startup(struct uart_port *port)
temp |= (UCR2_RXEN | UCR2_TXEN);
writel(temp, sport->port.membase + UCR2);
+#if defined CONFIG_ARCH_MX2 || defined CONFIG_ARCH_MX3
+ temp = readl(sport->port.membase + UCR3);
+ temp |= UCR3_RXDMUXSEL;
+ writel(temp, sport->port.membase + UCR3);
+#endif
+
/*
* Enable modem status interrupts
*/
@@ -1133,13 +1144,19 @@ static int serial_imx_probe(struct platform_device *pdev)
if(pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
sport->have_rtscts = 1;
- if (pdata->init)
- pdata->init(pdev);
+ if (pdata->init) {
+ ret = pdata->init(pdev);
+ if (ret)
+ goto clkput;
+ }
uart_add_one_port(&imx_reg, &sport->port);
platform_set_drvdata(pdev, &sport->port);
return 0;
+clkput:
+ clk_put(sport->clk);
+ clk_disable(sport->clk);
unmap:
iounmap(sport->port.membase);
free:
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index f7a0d37c422..abc00be5543 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -534,6 +534,11 @@ serial_pxa_set_termios(struct uart_port *port, struct ktermios *termios,
serial_out(up, UART_IER, up->ier);
+ if (termios->c_cflag & CRTSCTS)
+ up->mcr |= UART_MCR_AFE;
+ else
+ up->mcr &= ~UART_MCR_AFE;
+
serial_out(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */
serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */
diff --git a/drivers/serial/serial_ks8695.c b/drivers/serial/serial_ks8695.c
index b9cbfc87f61..998e89dc5aa 100644
--- a/drivers/serial/serial_ks8695.c
+++ b/drivers/serial/serial_ks8695.c
@@ -63,8 +63,44 @@
#define UART_DUMMY_LSR_RX 0x100
#define UART_PORT_SIZE (KS8695_USR - KS8695_URRB + 4)
-#define tx_enabled(port) ((port)->unused[0])
-#define rx_enabled(port) ((port)->unused[1])
+static inline int tx_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 1;
+}
+
+static inline int rx_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 2;
+}
+
+static inline int ms_enabled(struct uart_port *port)
+{
+ return port->unused[0] & 4;
+}
+
+static inline void ms_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 4;
+ else
+ port->unused[0] &= ~4;
+}
+
+static inline void rx_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 2;
+ else
+ port->unused[0] &= ~2;
+}
+
+static inline void tx_enable(struct uart_port *port, int enabled)
+{
+ if(enabled)
+ port->unused[0] |= 1;
+ else
+ port->unused[0] &= ~1;
+}
#ifdef SUPPORT_SYSRQ
@@ -75,7 +111,7 @@ static void ks8695uart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
disable_irq(KS8695_IRQ_UART_TX);
- tx_enabled(port) = 0;
+ tx_enable(port, 0);
}
}
@@ -83,7 +119,7 @@ static void ks8695uart_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
enable_irq(KS8695_IRQ_UART_TX);
- tx_enabled(port) = 1;
+ tx_enable(port, 1);
}
}
@@ -91,18 +127,24 @@ static void ks8695uart_stop_rx(struct uart_port *port)
{
if (rx_enabled(port)) {
disable_irq(KS8695_IRQ_UART_RX);
- rx_enabled(port) = 0;
+ rx_enable(port, 0);
}
}
static void ks8695uart_enable_ms(struct uart_port *port)
{
- enable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ if (!ms_enabled(port)) {
+ enable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ ms_enable(port,1);
+ }
}
static void ks8695uart_disable_ms(struct uart_port *port)
{
- disable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ if (ms_enabled(port)) {
+ disable_irq(KS8695_IRQ_UART_MODEM_STATUS);
+ ms_enable(port,0);
+ }
}
static irqreturn_t ks8695uart_rx_chars(int irq, void *dev_id)
@@ -285,8 +327,9 @@ static int ks8695uart_startup(struct uart_port *port)
int retval;
set_irq_flags(KS8695_IRQ_UART_TX, IRQF_VALID | IRQF_NOAUTOEN);
- tx_enabled(port) = 0;
- rx_enabled(port) = 1;
+ tx_enable(port, 0);
+ rx_enable(port, 1);
+ ms_enable(port, 1);
/*
* Allocate the IRQ
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c
index e41766d0803..a94a2ab4b57 100644
--- a/drivers/serial/sunhv.c
+++ b/drivers/serial/sunhv.c
@@ -616,7 +616,7 @@ static int __devexit hv_remove(struct of_device *dev)
return 0;
}
-static struct of_device_id hv_match[] = {
+static const struct of_device_id hv_match[] = {
{
.name = "console",
.compatible = "qcn",
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index 29b4458abf7..0355efe115d 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -1078,7 +1078,7 @@ static int __devexit sab_remove(struct of_device *op)
return 0;
}
-static struct of_device_id sab_match[] = {
+static const struct of_device_id sab_match[] = {
{
.name = "se",
},
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index a378464f929..a4dc79b1d7a 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -1506,7 +1506,7 @@ static int __devexit su_remove(struct of_device *op)
return 0;
}
-static struct of_device_id su_match[] = {
+static const struct of_device_id su_match[] = {
{
.name = "su",
},
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c
index 3cb4c8aee13..45a299f3561 100644
--- a/drivers/serial/sunzilog.c
+++ b/drivers/serial/sunzilog.c
@@ -1480,7 +1480,7 @@ static int __devexit zs_remove(struct of_device *op)
return 0;
}
-static struct of_device_id zs_match[] = {
+static const struct of_device_id zs_match[] = {
{
.name = "zs",
},
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 07:03:26 +0000