[linux-yocto] [PATCH] Revert "serial: 8250_dw: support serial console wakeup"

[Jukka Laitinen]

This reverts commit 4a6b554d2f7830772d95912a66fd14b109004e3e.

The reverted patch broke the uart functionality in Joule, which doesn't
have a proper pinctrl configuration for this purpose.

Signed-off-by: Jukka Laitinen <jukka.laitinen at intel.com>
---
 drivers/tty/serial/8250/8250_dw.c | 39 ---------------------------------------
 1 file changed, 39 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 9906cb5..c3b6edf 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -14,7 +14,6 @@
  * raised, the LCR needs to be rewritten and the uart status register read.
  */
 #include <linux/device.h>
-#include <linux/gpio/consumer.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/serial_8250.h>
@@ -22,9 +21,7 @@
 #include <linux/of.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
-#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
-#include <linux/pm_wakeirq.h>
 #include <linux/slab.h>
 #include <linux/acpi.h>
 #include <linux/clk.h>
@@ -330,7 +327,6 @@ static int dw8250_probe(struct platform_device *pdev)
 	int irq = platform_get_irq(pdev, 0);
 	struct uart_port *p = &uart.port;
 	struct dw8250_data *data;
-	struct gpio_desc *wake;
 	int err;
 	u32 val;
 
@@ -469,26 +465,6 @@ static int dw8250_probe(struct platform_device *pdev)
 		uart.dma = &data->dma;
 	}
 
-	/* Set up RxD or CTS pin as wake source */
-	wake = gpiod_get(&pdev->dev, "rx", GPIOD_IN);
-	if (IS_ERR(wake))
-		wake = gpiod_get(&pdev->dev, "cts", GPIOD_IN);
-	if (!IS_ERR(wake)) {
-		irq = gpiod_to_irq(wake);
-		if (irq >= 0) {
-			device_init_wakeup(&pdev->dev, true);
-			err = dev_pm_set_dedicated_wake_irq(&pdev->dev, irq);
-			if (err) {
-				dev_warn(&pdev->dev,
-					 "Can't set dedicated wake IRQ: %d\n",
-					 err);
-			} else {
-				irq_set_irq_type(irq, IRQ_TYPE_EDGE_BOTH);
-			}
-		}
-		gpiod_put(wake);
-	}
-
 	data->line = serial8250_register_8250_port(&uart);
 	if (data->line < 0) {
 		err = data->line;
@@ -526,9 +502,6 @@ static int dw8250_remove(struct platform_device *pdev)
 
 	pm_runtime_get_sync(&pdev->dev);
 
-	dev_pm_clear_wake_irq(&pdev->dev);
-	device_init_wakeup(&pdev->dev, false);
-
 	serial8250_unregister_port(data->line);
 
 	if (!IS_ERR(data->rst))
@@ -571,8 +544,6 @@ static int dw8250_runtime_suspend(struct device *dev)
 {
 	struct dw8250_data *data = dev_get_drvdata(dev);
 
-	pinctrl_pm_select_sleep_state(dev);
-
 	if (!IS_ERR(data->clk))
 		clk_disable_unprepare(data->clk);
 
@@ -585,7 +556,6 @@ static int dw8250_runtime_suspend(struct device *dev)
 static int dw8250_runtime_resume(struct device *dev)
 {
 	struct dw8250_data *data = dev_get_drvdata(dev);
-	struct uart_8250_port *up = serial8250_get_port(data->line);
 
 	if (!IS_ERR(data->pclk))
 		clk_prepare_enable(data->pclk);
@@ -593,15 +563,6 @@ static int dw8250_runtime_resume(struct device *dev)
 	if (!IS_ERR(data->clk))
 		clk_prepare_enable(data->clk);
 
-	pinctrl_pm_select_default_state(dev);
-
-	/* Restore context */
-	serial8250_do_restore_context(&up->port);
-
-	/*
-	 *  TODO: Check if it needs more than it's done in
-	 *  serial8250_console_restore()
-	 */
 	return 0;
 }
 #endif
-- 
2.7.4

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