Commit 7c74c220 authored by Hans de Goede's avatar Hans de Goede Committed by Maxime Ripard
Browse files

clk: sunxi: Give sunxi_factors_register a registers parameter 



Before this commit sunxi_factors_register uses of_iomap(node, 0) to get
the clk registers. The sun6i prcm has factor clocks, for which we want to
use sunxi_factors_register, but of_iomap(node, 0) does not work for the prcm
factor clocks, because the prcm uses the mfd framework, so the registers
are not part of the dt-node, instead they are added to the platform_device,
as platform_device resources.

This commit makes getting the registers the callers duty, so that
sunxi_factors_register can be used with mfd instantiated platform device too.

While at it also add error checking to the of_iomap calls.

This commit also drops the __init function from sunxi_factors_register since
platform driver probe functions are not __init.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
parent ff8bbf78

drivers/clk/sunxi/clk-factors.c

+4 −6
Original line number Diff line number Diff line
@@ -156,9 +156,10 @@ static const struct clk_ops clk_factors_ops = { 
	.set_rate = clk_factors_set_rate,

};



struct clk * __init sunxi_factors_register(struct device_node *node,

struct clk *sunxi_factors_register(struct device_node *node,

				   const struct factors_data *data,

					   spinlock_t *lock)

				   spinlock_t *lock,

				   void __iomem *reg)

{

	struct clk *clk;

	struct clk_factors *factors;
@@ -168,11 +169,8 @@ struct clk * __init sunxi_factors_register(struct device_node *node, 
	struct clk_hw *mux_hw = NULL;

	const char *clk_name = node->name;

	const char *parents[FACTORS_MAX_PARENTS];

	void __iomem *reg;

	int i = 0;



	reg = of_iomap(node, 0);



	/* if we have a mux, we will have >1 parents */

	while (i < FACTORS_MAX_PARENTS &&

	       (parents[i] = of_clk_get_parent_name(node, i)) != NULL)

drivers/clk/sunxi/clk-factors.h

+4 −3
Original line number Diff line number Diff line
@@ -36,8 +36,9 @@ struct clk_factors { 
	spinlock_t *lock;

};



struct clk * __init sunxi_factors_register(struct device_node *node,

struct clk *sunxi_factors_register(struct device_node *node,

				   const struct factors_data *data,

					   spinlock_t *lock);

				   spinlock_t *lock,

				   void __iomem *reg);



#endif

drivers/clk/sunxi/clk-mod0.c

+22 −2
Original line number Diff line number Diff line
@@ -79,7 +79,17 @@ static DEFINE_SPINLOCK(sun4i_a10_mod0_lock); 


static void __init sun4i_a10_mod0_setup(struct device_node *node)

{

	sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun4i_a10_mod0_lock);

	void __iomem *reg;



	reg = of_iomap(node, 0);

	if (!reg) {

		pr_err("Could not get registers for mod0-clk: %s\n",

		       node->name);

		return;

	}



	sunxi_factors_register(node, &sun4i_a10_mod0_data,

			       &sun4i_a10_mod0_lock, reg);

}

CLK_OF_DECLARE(sun4i_a10_mod0, "allwinner,sun4i-a10-mod0-clk", sun4i_a10_mod0_setup);
@@ -87,7 +97,17 @@ static DEFINE_SPINLOCK(sun5i_a13_mbus_lock); 


static void __init sun5i_a13_mbus_setup(struct device_node *node)

{

	struct clk *mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun5i_a13_mbus_lock);

	struct clk *mbus;

	void __iomem *reg;



	reg = of_iomap(node, 0);

	if (!reg) {

		pr_err("Could not get registers for a13-mbus-clk\n");

		return;

	}



	mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data,

				      &sun5i_a13_mbus_lock, reg);



	/* The MBUS clocks needs to be always enabled */

	__clk_get(mbus);

drivers/clk/sunxi/clk-sun8i-mbus.c

+11 −2
Original line number Diff line number Diff line
@@ -69,8 +69,17 @@ static DEFINE_SPINLOCK(sun8i_a23_mbus_lock); 


static void __init sun8i_a23_mbus_setup(struct device_node *node)

{

	struct clk *mbus = sunxi_factors_register(node, &sun8i_a23_mbus_data,

						  &sun8i_a23_mbus_lock);

	struct clk *mbus;

	void __iomem *reg;



	reg = of_iomap(node, 0);

	if (!reg) {

		pr_err("Could not get registers for a23-mbus-clk\n");

		return;

	}



	mbus = sunxi_factors_register(node, &sun8i_a23_mbus_data,

				      &sun8i_a23_mbus_lock, reg);



	/* The MBUS clocks needs to be always enabled */

	__clk_get(mbus);

drivers/clk/sunxi/clk-sunxi.c

+10 −1
Original line number Diff line number Diff line
@@ -728,7 +728,16 @@ static const struct factors_data sun7i_a20_out_data __initconst = { 
static struct clk * __init sunxi_factors_clk_setup(struct device_node *node,

						   const struct factors_data *data)

{

	return sunxi_factors_register(node, data, &clk_lock);

	void __iomem *reg;



	reg = of_iomap(node, 0);

	if (!reg) {

		pr_err("Could not get registers for factors-clk: %s\n",

		       node->name);

		return NULL;

	}



	return sunxi_factors_register(node, data, &clk_lock, reg);

}

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