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authorLinus Torvalds <torvalds@linux-foundation.org>2012-02-09 13:52:57 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-09 13:52:57 -0800
commit19e00f2f1d5273dbc52eab0ebc315cae3aa44b2a (patch)
tree50a7aecb4b3b94db2dd8061b3692fe216bc371cc /drivers
parentb05ee6bf9e6c7acc38dca1466b63bb24ae5df6f3 (diff)
parent197234520bd83aba2199add57a9d2678ee7f9781 (diff)
Merge tag 'tty-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Serial/TTY fixes for the 3.3-rc3 tree Just a few new device ids, omap serial driver regression fixes, and a build fix for the 8250 driver movement. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> * tag 'tty-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty: serial: omap-serial: wakeup latency constraint is in microseconds, not milliseconds tty: serial: OMAP: block idle while the UART is transferring data in PIO mode tty: serial: OMAP: use a 1-byte RX FIFO threshold in PIO mode m32r: relocate drivers back out of 8250 dir tty: fix a build failure on sparc serial: samsung: Add support for EXYNOS5250 serial: samsung: Add support for EXYNOS4212 and EXYNOS4412 drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layer
Diffstat (limited to 'drivers')
-rw-r--r--drivers/tty/serial/8250/8250.c2
-rw-r--r--drivers/tty/serial/m32r_sio.c (renamed from drivers/tty/serial/8250/m32r_sio.c)0
-rw-r--r--drivers/tty/serial/m32r_sio.h (renamed from drivers/tty/serial/8250/m32r_sio.h)0
-rw-r--r--drivers/tty/serial/m32r_sio_reg.h (renamed from drivers/tty/serial/8250/m32r_sio_reg.h)0
-rw-r--r--drivers/tty/serial/omap-serial.c30
-rw-r--r--drivers/tty/serial/samsung.c3
6 files changed, 28 insertions, 7 deletions
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 9f50c4e3c2be..9b7336fcfbb3 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -45,7 +45,7 @@
#include "8250.h"
#ifdef CONFIG_SPARC
-#include "suncore.h"
+#include "../suncore.h"
#endif
/*
diff --git a/drivers/tty/serial/8250/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 94a6792bf97b..94a6792bf97b 100644
--- a/drivers/tty/serial/8250/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
diff --git a/drivers/tty/serial/8250/m32r_sio.h b/drivers/tty/serial/m32r_sio.h
index e9b7e11793b1..e9b7e11793b1 100644
--- a/drivers/tty/serial/8250/m32r_sio.h
+++ b/drivers/tty/serial/m32r_sio.h
diff --git a/drivers/tty/serial/8250/m32r_sio_reg.h b/drivers/tty/serial/m32r_sio_reg.h
index 4671473793e3..4671473793e3 100644
--- a/drivers/tty/serial/8250/m32r_sio_reg.h
+++ b/drivers/tty/serial/m32r_sio_reg.h
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 1c2426931484..f80904145fd4 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -46,6 +46,13 @@
#define DEFAULT_CLK_SPEED 48000000 /* 48Mhz*/
+/* SCR register bitmasks */
+#define OMAP_UART_SCR_RX_TRIG_GRANU1_MASK (1 << 7)
+
+/* FCR register bitmasks */
+#define OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT 6
+#define OMAP_UART_FCR_RX_FIFO_TRIG_MASK (0x3 << 6)
+
static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS];
/* Forward declaration of functions */
@@ -129,6 +136,7 @@ static void serial_omap_enable_ms(struct uart_port *port)
static void serial_omap_stop_tx(struct uart_port *port)
{
struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
if (up->use_dma &&
up->uart_dma.tx_dma_channel != OMAP_UART_DMA_CH_FREE) {
@@ -151,6 +159,9 @@ static void serial_omap_stop_tx(struct uart_port *port)
serial_out(up, UART_IER, up->ier);
}
+ if (!up->use_dma && pdata->set_forceidle)
+ pdata->set_forceidle(up->pdev);
+
pm_runtime_mark_last_busy(&up->pdev->dev);
pm_runtime_put_autosuspend(&up->pdev->dev);
}
@@ -279,6 +290,7 @@ static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up)
static void serial_omap_start_tx(struct uart_port *port)
{
struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
struct circ_buf *xmit;
unsigned int start;
int ret = 0;
@@ -286,6 +298,8 @@ static void serial_omap_start_tx(struct uart_port *port)
if (!up->use_dma) {
pm_runtime_get_sync(&up->pdev->dev);
serial_omap_enable_ier_thri(up);
+ if (pdata->set_noidle)
+ pdata->set_noidle(up->pdev);
pm_runtime_mark_last_busy(&up->pdev->dev);
pm_runtime_put_autosuspend(&up->pdev->dev);
return;
@@ -726,8 +740,7 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
quot = serial_omap_get_divisor(port, baud);
/* calculate wakeup latency constraint */
- up->calc_latency = (1000000 * up->port.fifosize) /
- (1000 * baud / 8);
+ up->calc_latency = (USEC_PER_SEC * up->port.fifosize) / (baud / 8);
up->latency = up->calc_latency;
schedule_work(&up->qos_work);
@@ -811,14 +824,21 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
up->mcr = serial_in(up, UART_MCR);
serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR);
/* FIFO ENABLE, DMA MODE */
- serial_out(up, UART_FCR, up->fcr);
- serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
+
+ up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK;
if (up->use_dma) {
serial_out(up, UART_TI752_TLR, 0);
- up->scr |= (UART_FCR_TRIGGER_4 | UART_FCR_TRIGGER_8);
+ up->scr |= UART_FCR_TRIGGER_4;
+ } else {
+ /* Set receive FIFO threshold to 1 byte */
+ up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
+ up->fcr |= (0x1 << OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT);
}
+ serial_out(up, UART_FCR, up->fcr);
+ serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
+
serial_out(up, UART_OMAP_SCR, up->scr);
serial_out(up, UART_EFR, up->efr);
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index f96f37b5fec6..c55e5fb16fa3 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -1593,7 +1593,8 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = {
#define S5PV210_SERIAL_DRV_DATA (kernel_ulong_t)NULL
#endif
-#ifdef CONFIG_CPU_EXYNOS4210
+#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212) || \
+ defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250)
static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = {
.info = &(struct s3c24xx_uart_info) {
.name = "Samsung Exynos4 UART",