1 files changed, 2 insertions, 116 deletions

diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index e027bc99251c..5bdbc42e42a6 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -58,8 +58,6 @@
 struct omap_uart_state {
 	int num;
 	int can_sleep;
-	struct timer_list timer;
-	u32 timeout;
 
 	void __iomem *wk_st;
 	void __iomem *wk_en;
@@ -67,13 +65,9 @@ struct omap_uart_state {
 	u32 padconf;
 	u32 dma_enabled;
 
-	struct clk *ick;
-	struct clk *fck;
 	int clocked;
 
-	int irq;
 	int regshift;
-	int irqflags;
 	void __iomem *membase;
 	resource_size_t mapbase;
 
@@ -331,32 +325,6 @@ static void omap_uart_block_sleep(struct omap_uart_state *uart)
 
 	omap_uart_smart_idle_enable(uart, 0);
 	uart->can_sleep = 0;
-	if (uart->timeout)
-		mod_timer(&uart->timer, jiffies + uart->timeout);
-	else
-		del_timer(&uart->timer);
-}
-
-static void omap_uart_allow_sleep(struct omap_uart_state *uart)
-{
-	if (device_may_wakeup(&uart->pdev->dev))
-		omap_uart_enable_wakeup(uart);
-	else
-		omap_uart_disable_wakeup(uart);
-
-	if (!uart->clocked)
-		return;
-
-	omap_uart_smart_idle_enable(uart, 1);
-	uart->can_sleep = 1;
-	del_timer(&uart->timer);
-}
-
-static void omap_uart_idle_timer(unsigned long data)
-{
-	struct omap_uart_state *uart = (struct omap_uart_state *)data;
-
-	omap_uart_allow_sleep(uart);
 }
 
 int omap_uart_can_sleep(void)
@@ -380,35 +348,11 @@ int omap_uart_can_sleep(void)
 	return can_sleep;
 }
 
-/**
- * omap_uart_interrupt()
- *
- * This handler is used only to detect that *any* UART interrupt has
- * occurred.  It does _nothing_ to handle the interrupt.  Rather,
- * any UART interrupt will trigger the inactivity timer so the
- * UART will not idle or sleep for its timeout period.
- *
- **/
-/* static int first_interrupt; */
-static irqreturn_t omap_uart_interrupt(int irq, void *dev_id)
-{
-	struct omap_uart_state *uart = dev_id;
-
-	omap_uart_block_sleep(uart);
-
-	return IRQ_NONE;
-}
-
 static void omap_uart_idle_init(struct omap_uart_state *uart)
 {
 	int ret;
 
 	uart->can_sleep = 0;
-	uart->timeout = DEFAULT_TIMEOUT;
-	setup_timer(&uart->timer, omap_uart_idle_timer,
-		    (unsigned long) uart);
-	if (uart->timeout)
-		mod_timer(&uart->timer, jiffies + uart->timeout);
 	omap_uart_smart_idle_enable(uart, 0);
 
 	if (cpu_is_omap34xx() && !(cpu_is_ti81xx() || cpu_is_am33xx())) {
@@ -470,51 +414,8 @@ static void omap_uart_idle_init(struct omap_uart_state *uart)
 		uart->wk_mask = 0;
 		uart->padconf = 0;
 	}
-
-	uart->irqflags |= IRQF_SHARED;
-	ret = request_threaded_irq(uart->irq, NULL, omap_uart_interrupt,
-				   IRQF_SHARED, "serial idle", (void *)uart);
-	WARN_ON(ret);
-}
-
-static ssize_t sleep_timeout_show(struct device *dev,
-				  struct device_attribute *attr,
-				  char *buf)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *odev = to_omap_device(pdev);
-	struct omap_uart_state *uart = odev->hwmods[0]->dev_attr;
-
-	return sprintf(buf, "%u\n", uart->timeout / HZ);
 }
 
-static ssize_t sleep_timeout_store(struct device *dev,
-				   struct device_attribute *attr,
-				   const char *buf, size_t n)
-{
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_device *odev = to_omap_device(pdev);
-	struct omap_uart_state *uart = odev->hwmods[0]->dev_attr;
-	unsigned int value;
-
-	if (sscanf(buf, "%u", &value) != 1) {
-		dev_err(dev, "sleep_timeout_store: Invalid value\n");
-		return -EINVAL;
-	}
-
-	uart->timeout = value * HZ;
-	if (uart->timeout)
-		mod_timer(&uart->timer, jiffies + uart->timeout);
-	else
-		/* A zero value means disable timeout feature */
-		omap_uart_block_sleep(uart);
-
-	return n;
-}
-
-static DEVICE_ATTR(sleep_timeout, 0644, sleep_timeout_show,
-		sleep_timeout_store);
-#define DEV_CREATE_FILE(dev, attr) WARN_ON(device_create_file(dev, attr))
 #else
 static inline void omap_uart_idle_init(struct omap_uart_state *uart) {}
 static void omap_uart_block_sleep(struct omap_uart_state *uart)
@@ -522,7 +423,6 @@ static void omap_uart_block_sleep(struct omap_uart_state *uart)
 	/* Needed to enable UART clocks when built without CONFIG_PM */
 	omap_uart_enable_clocks(uart);
 }
-#define DEV_CREATE_FILE(dev, attr)
 #endif /* CONFIG_PM */
 
 static int __init omap_serial_early_init(void)
@@ -606,8 +506,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata)
 	omap_up.uartclk = OMAP24XX_BASE_BAUD * 16;
 	omap_up.mapbase = oh->slaves[0]->addr->pa_start;
 	omap_up.membase = omap_hwmod_get_mpu_rt_va(oh);
-	omap_up.irqflags = IRQF_SHARED;
-	omap_up.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+	omap_up.flags = UPF_BOOT_AUTOCONF;
 
 	pdata = &omap_up;
 	pdata_size = sizeof(struct omap_uart_port_info);
@@ -623,7 +522,6 @@ void __init omap_serial_init_port(struct omap_board_data *bdata)
 	omap_device_disable_idle_on_suspend(pdev);
 	oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt);
 
-	uart->irq = oh->mpu_irqs[0].irq;
 	uart->regshift = 2;
 	uart->mapbase = oh->slaves[0]->addr->pa_start;
 	uart->membase = omap_hwmod_get_mpu_rt_va(oh);
@@ -646,24 +544,12 @@ void __init omap_serial_init_port(struct omap_board_data *bdata)
 	omap_hwmod_enable_wakeup(uart->oh);
 	omap_device_idle(uart->pdev);
 
-	/*
-	 * Need to block sleep long enough for interrupt driven
-	 * driver to start.  Console driver is in polling mode
-	 * so device needs to be kept enabled while polling driver
-	 * is in use.
-	 */
-	if (uart->timeout)
-		uart->timeout = (30 * HZ);
 	omap_uart_block_sleep(uart);
-	uart->timeout = DEFAULT_TIMEOUT;
-
 	console_unlock();
 
 	if ((cpu_is_omap34xx() && uart->padconf) ||
-	    (uart->wk_en && uart->wk_mask)) {
+	    (uart->wk_en && uart->wk_mask))
 		device_init_wakeup(&pdev->dev, true);
-		DEV_CREATE_FILE(&pdev->dev, &dev_attr_sleep_timeout);
-	}
 
 	/* Enable the MDR1 errata for OMAP3 */
 	if (cpu_is_omap34xx() && !(cpu_is_ti81xx() || cpu_is_am33xx()))