From: Stephen Boyd <sboyd@codeaurora.org>
Date: Fri, 19 Feb 2016 03:17:29 +0000 (-0800)
Subject: Merge branch 'clk-fixes' into clk-next
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6a05d862c3f03b367e14d8727c5b243ecb92a653;p=openwrt%2Fstaging%2Fblogic.git

Merge branch 'clk-fixes' into clk-next

* clk-fixes:
  clk: gpio: Really allow an optional clock= DT property
  Revert "clk: qcom: Specify LE device endianness"
---

6a05d862c3f03b367e14d8727c5b243ecb92a653
diff --cc drivers/clk/clk-gpio.c
index fb32a7366ef6,7b09a265d79f..522bffdbacc5
--- a/drivers/clk/clk-gpio.c
+++ b/drivers/clk/clk-gpio.c
@@@ -201,71 -201,134 +201,71 @@@ struct clk *clk_register_gpio_mux(struc
  }
  EXPORT_SYMBOL_GPL(clk_register_gpio_mux);
  
 -#ifdef CONFIG_OF
 -/**
 - * clk_register_get() has to be delayed, because -EPROBE_DEFER
 - * can not be handled properly at of_clk_init() call time.
 - */
 -
 -struct clk_gpio_delayed_register_data {
 -	const char *gpio_name;
 -	int num_parents;
 -	const char **parent_names;
 -	struct device_node *node;
 -	struct mutex lock;
 -	struct clk *clk;
 -	struct clk *(*clk_register_get)(const char *name,
 -			const char * const *parent_names, u8 num_parents,
 -			unsigned gpio, bool active_low);
 -};
 -
 -static struct clk *of_clk_gpio_delayed_register_get(
 -		struct of_phandle_args *clkspec, void *_data)
 +static int gpio_clk_driver_probe(struct platform_device *pdev)
  {
 -	struct clk_gpio_delayed_register_data *data = _data;
 -	struct clk *clk;
 -	int gpio;
 +	struct device_node *node = pdev->dev.of_node;
 +	const char **parent_names, *gpio_name;
 +	int num_parents, gpio;
  	enum of_gpio_flags of_flags;
 +	struct clk *clk;
 +	bool active_low, is_mux;
  
 -	mutex_lock(&data->lock);
 +	num_parents = of_clk_get_parent_count(node);
 +	if (num_parents < 0)
- 		return -EINVAL;
++		num_parents = 0;
  
 -	if (data->clk) {
 -		mutex_unlock(&data->lock);
 -		return data->clk;
 +	if (num_parents) {
 +		parent_names = devm_kcalloc(&pdev->dev, num_parents,
 +					    sizeof(char *), GFP_KERNEL);
 +		if (!parent_names)
 +			return -ENOMEM;
 +
 +		of_clk_parent_fill(node, parent_names, num_parents);
 +	} else {
 +		parent_names = NULL;
  	}
  
 -	gpio = of_get_named_gpio_flags(data->node, data->gpio_name, 0,
 -			&of_flags);
 +	is_mux = of_device_is_compatible(node, "gpio-mux-clock");
 +
 +	gpio_name = is_mux ? "select-gpios" : "enable-gpios";
 +	gpio = of_get_named_gpio_flags(node, gpio_name, 0, &of_flags);
  	if (gpio < 0) {
 -		mutex_unlock(&data->lock);
  		if (gpio == -EPROBE_DEFER)
  			pr_debug("%s: %s: GPIOs not yet available, retry later\n",
 -					data->node->name, __func__);
 +					node->name, __func__);
  		else
  			pr_err("%s: %s: Can't get '%s' DT property\n",
 -					data->node->name, __func__,
 -					data->gpio_name);
 -		return ERR_PTR(gpio);
 +					node->name, __func__,
 +					gpio_name);
 +		return gpio;
  	}
  
 -	clk = data->clk_register_get(data->node->name, data->parent_names,
 -			data->num_parents, gpio, of_flags & OF_GPIO_ACTIVE_LOW);
 -	if (IS_ERR(clk))
 -		goto out;
 -
 -	data->clk = clk;
 -out:
 -	mutex_unlock(&data->lock);
 -
 -	return clk;
 -}
 -
 -static struct clk *of_clk_gpio_gate_delayed_register_get(const char *name,
 -		const char * const *parent_names, u8 num_parents,
 -		unsigned gpio, bool active_low)
 -{
 -	return clk_register_gpio_gate(NULL, name, parent_names ?
 -			parent_names[0] : NULL, gpio, active_low, 0);
 -}
 +	active_low = of_flags & OF_GPIO_ACTIVE_LOW;
  
 -static struct clk *of_clk_gpio_mux_delayed_register_get(const char *name,
 -		const char * const *parent_names, u8 num_parents, unsigned gpio,
 -		bool active_low)
 -{
 -	return clk_register_gpio_mux(NULL, name, parent_names, num_parents,
 -			gpio, active_low, 0);
 -}
 -
 -static void __init of_gpio_clk_setup(struct device_node *node,
 -		const char *gpio_name,
 -		struct clk *(*clk_register_get)(const char *name,
 -				const char * const *parent_names,
 -				u8 num_parents,
 -				unsigned gpio, bool active_low))
 -{
 -	struct clk_gpio_delayed_register_data *data;
 -	const char **parent_names;
 -	int i, num_parents;
 -
 -	num_parents = of_clk_get_parent_count(node);
 -	if (num_parents < 0)
 -		num_parents = 0;
 -
 -	data = kzalloc(sizeof(*data), GFP_KERNEL);
 -	if (!data)
 -		return;
 -
 -	if (num_parents) {
 -		parent_names = kcalloc(num_parents, sizeof(char *), GFP_KERNEL);
 -		if (!parent_names) {
 -			kfree(data);
 -			return;
 -		}
 -
 -		for (i = 0; i < num_parents; i++)
 -			parent_names[i] = of_clk_get_parent_name(node, i);
 -	} else {
 -		parent_names = NULL;
 -	}
 -
 -	data->num_parents = num_parents;
 -	data->parent_names = parent_names;
 -	data->node = node;
 -	data->gpio_name = gpio_name;
 -	data->clk_register_get = clk_register_get;
 -	mutex_init(&data->lock);
 +	if (is_mux)
 +		clk = clk_register_gpio_mux(&pdev->dev, node->name,
 +				parent_names, num_parents, gpio, active_low, 0);
 +	else
 +		clk = clk_register_gpio_gate(&pdev->dev, node->name,
 +				parent_names ?  parent_names[0] : NULL, gpio,
 +				active_low, 0);
 +	if (IS_ERR(clk))
 +		return PTR_ERR(clk);
  
 -	of_clk_add_provider(node, of_clk_gpio_delayed_register_get, data);
 +	return of_clk_add_provider(node, of_clk_src_simple_get, clk);
  }
  
 -static void __init of_gpio_gate_clk_setup(struct device_node *node)
 -{
 -	of_gpio_clk_setup(node, "enable-gpios",
 -		of_clk_gpio_gate_delayed_register_get);
 -}
 -CLK_OF_DECLARE(gpio_gate_clk, "gpio-gate-clock", of_gpio_gate_clk_setup);
 +static const struct of_device_id gpio_clk_match_table[] = {
 +	{ .compatible = "gpio-mux-clock" },
 +	{ .compatible = "gpio-gate-clock" },
 +	{ }
 +};
  
 -void __init of_gpio_mux_clk_setup(struct device_node *node)
 -{
 -	of_gpio_clk_setup(node, "select-gpios",
 -		of_clk_gpio_mux_delayed_register_get);
 -}
 -CLK_OF_DECLARE(gpio_mux_clk, "gpio-mux-clock", of_gpio_mux_clk_setup);
 -#endif
 +static struct platform_driver gpio_clk_driver = {
 +	.probe		= gpio_clk_driver_probe,
 +	.driver		= {
 +		.name	= "gpio-clk",
 +		.of_match_table = gpio_clk_match_table,
 +	},
 +};
 +builtin_platform_driver(gpio_clk_driver);