commit 0f672f6c0b52b7b0700b0915c72b540721af4465
author David Brazdil <dbrazdil@google.com> Tue Dec 10 10:32:29 2019 +0000
committer David Brazdil <dbrazdil@google.com> Tue Dec 10 19:03:18 2019 +0000
tree 85c8cba019caa205e4f8920d72d93f6d6deaf29c
parent 3a0ad55d848b50499b68d7141d4eca997fce28ef

Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd

drivers/clk/clk-gpio.c

diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c
index 40af4fb..9d930ed 100644
--- a/drivers/clk/clk-gpio.c
+++ b/drivers/clk/clk-gpio.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2013 - 2014 Texas Instruments Incorporated - http://www.ti.com
  *
@@ -5,10 +6,6 @@
  *    Jyri Sarha <jsarha@ti.com>
  *    Sergej Sawazki <ce3a@gmx.de>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
  * Gpio controlled clock implementation
  */
 
@@ -61,6 +58,35 @@
 };
 EXPORT_SYMBOL_GPL(clk_gpio_gate_ops);
 
+static int clk_sleeping_gpio_gate_prepare(struct clk_hw *hw)
+{
+	struct clk_gpio *clk = to_clk_gpio(hw);
+
+	gpiod_set_value_cansleep(clk->gpiod, 1);
+
+	return 0;
+}
+
+static void clk_sleeping_gpio_gate_unprepare(struct clk_hw *hw)
+{
+	struct clk_gpio *clk = to_clk_gpio(hw);
+
+	gpiod_set_value_cansleep(clk->gpiod, 0);
+}
+
+static int clk_sleeping_gpio_gate_is_prepared(struct clk_hw *hw)
+{
+	struct clk_gpio *clk = to_clk_gpio(hw);
+
+	return gpiod_get_value_cansleep(clk->gpiod);
+}
+
+static const struct clk_ops clk_sleeping_gpio_gate_ops = {
+	.prepare = clk_sleeping_gpio_gate_prepare,
+	.unprepare = clk_sleeping_gpio_gate_unprepare,
+	.is_prepared = clk_sleeping_gpio_gate_is_prepared,
+};
+
 /**
  * DOC: basic clock multiplexer which can be controlled with a gpio output
  * Traits of this clock:
@@ -111,7 +137,7 @@
 
 	init.name = name;
 	init.ops = clk_gpio_ops;
-	init.flags = flags | CLK_IS_BASIC;
+	init.flags = flags;
 	init.parent_names = parent_names;
 	init.num_parents = num_parents;
 
@@ -147,10 +173,16 @@
 		const char *parent_name, struct gpio_desc *gpiod,
 		unsigned long flags)
 {
+	const struct clk_ops *ops;
+
+	if (gpiod_cansleep(gpiod))
+		ops = &clk_sleeping_gpio_gate_ops;
+	else
+		ops = &clk_gpio_gate_ops;
+
 	return clk_register_gpio(dev, name,
 			(parent_name ? &parent_name : NULL),
-			(parent_name ? 1 : 0), gpiod, flags,
-			&clk_gpio_gate_ops);
+			(parent_name ? 1 : 0), gpiod, flags, ops);
 }
 EXPORT_SYMBOL_GPL(clk_hw_register_gpio_gate);
 
@@ -233,11 +265,11 @@
 	if (IS_ERR(gpiod)) {
 		ret = PTR_ERR(gpiod);
 		if (ret == -EPROBE_DEFER)
-			pr_debug("%s: %s: GPIOs not yet available, retry later\n",
-					node->name, __func__);
+			pr_debug("%pOFn: %s: GPIOs not yet available, retry later\n",
+					node, __func__);
 		else
-			pr_err("%s: %s: Can't get '%s' named GPIO property\n",
-					node->name, __func__,
+			pr_err("%pOFn: %s: Can't get '%s' named GPIO property\n",
+					node, __func__,
 					gpio_name);
 		return ret;
 	}