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

arch/arm/mach-omap2/serial.c

@@ -107,18 +107,18 @@ static void omap_uart_set_noidle(struct platform_device *pdev)
 	omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_NO);
 }
 
-static void omap_uart_set_forceidle(struct platform_device *pdev)
+static void omap_uart_set_smartidle(struct platform_device *pdev)
 {
 	struct omap_device *od = to_omap_device(pdev);
 
-	omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_FORCE);
+	omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_SMART);
 }
 
 #else
 static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable)
 {}
 static void omap_uart_set_noidle(struct platform_device *pdev) {}
-static void omap_uart_set_forceidle(struct platform_device *pdev) {}
+static void omap_uart_set_smartidle(struct platform_device *pdev) {}
 #endif /* CONFIG_PM */
 
 #ifdef CONFIG_OMAP_MUX
@@ -349,7 +349,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
 	omap_up.uartclk = OMAP24XX_BASE_BAUD * 16;
 	omap_up.flags = UPF_BOOT_AUTOCONF;
 	omap_up.get_context_loss_count = omap_pm_get_dev_context_loss_count;
-	omap_up.set_forceidle = omap_uart_set_forceidle;
+	omap_up.set_forceidle = omap_uart_set_smartidle;
 	omap_up.set_noidle = omap_uart_set_noidle;
 	omap_up.enable_wakeup = omap_uart_enable_wakeup;
 	omap_up.dma_rx_buf_size = info->dma_rx_buf_size;

drivers/tty/serial/8250/8250.c

@@ -45,7 +45,7 @@
 #include "8250.h"
 
 #ifdef CONFIG_SPARC
-#include "suncore.h"
+#include "../suncore.h"
 #endif
 
 /*

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);

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",