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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: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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@ -156,9 +156,10 @@ static const struct clk_ops clk_factors_ops = {
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.set_rate = clk_factors_set_rate,
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};
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struct clk * __init sunxi_factors_register(struct device_node *node,
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const struct factors_data *data,
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spinlock_t *lock)
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struct clk *sunxi_factors_register(struct device_node *node,
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const struct factors_data *data,
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spinlock_t *lock,
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void __iomem *reg)
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{
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struct clk *clk;
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struct clk_factors *factors;
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@ -168,11 +169,8 @@ struct clk * __init sunxi_factors_register(struct device_node *node,
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struct clk_hw *mux_hw = NULL;
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const char *clk_name = node->name;
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const char *parents[FACTORS_MAX_PARENTS];
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void __iomem *reg;
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int i = 0;
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reg = of_iomap(node, 0);
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/* if we have a mux, we will have >1 parents */
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while (i < FACTORS_MAX_PARENTS &&
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(parents[i] = of_clk_get_parent_name(node, i)) != NULL)
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@ -36,8 +36,9 @@ struct clk_factors {
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spinlock_t *lock;
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};
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struct clk * __init sunxi_factors_register(struct device_node *node,
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const struct factors_data *data,
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spinlock_t *lock);
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struct clk *sunxi_factors_register(struct device_node *node,
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const struct factors_data *data,
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spinlock_t *lock,
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void __iomem *reg);
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#endif
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@ -79,7 +79,17 @@ static DEFINE_SPINLOCK(sun4i_a10_mod0_lock);
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static void __init sun4i_a10_mod0_setup(struct device_node *node)
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{
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sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun4i_a10_mod0_lock);
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void __iomem *reg;
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reg = of_iomap(node, 0);
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if (!reg) {
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pr_err("Could not get registers for mod0-clk: %s\n",
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node->name);
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return;
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}
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sunxi_factors_register(node, &sun4i_a10_mod0_data,
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&sun4i_a10_mod0_lock, reg);
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}
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CLK_OF_DECLARE(sun4i_a10_mod0, "allwinner,sun4i-a10-mod0-clk", sun4i_a10_mod0_setup);
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@ -87,7 +97,17 @@ static DEFINE_SPINLOCK(sun5i_a13_mbus_lock);
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static void __init sun5i_a13_mbus_setup(struct device_node *node)
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{
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struct clk *mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun5i_a13_mbus_lock);
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struct clk *mbus;
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void __iomem *reg;
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reg = of_iomap(node, 0);
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if (!reg) {
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pr_err("Could not get registers for a13-mbus-clk\n");
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return;
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}
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mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data,
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&sun5i_a13_mbus_lock, reg);
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/* The MBUS clocks needs to be always enabled */
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__clk_get(mbus);
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@ -69,8 +69,17 @@ static DEFINE_SPINLOCK(sun8i_a23_mbus_lock);
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static void __init sun8i_a23_mbus_setup(struct device_node *node)
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{
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struct clk *mbus = sunxi_factors_register(node, &sun8i_a23_mbus_data,
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&sun8i_a23_mbus_lock);
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struct clk *mbus;
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void __iomem *reg;
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reg = of_iomap(node, 0);
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if (!reg) {
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pr_err("Could not get registers for a23-mbus-clk\n");
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return;
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}
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mbus = sunxi_factors_register(node, &sun8i_a23_mbus_data,
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&sun8i_a23_mbus_lock, reg);
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/* The MBUS clocks needs to be always enabled */
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__clk_get(mbus);
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@ -728,7 +728,16 @@ static const struct factors_data sun7i_a20_out_data __initconst = {
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static struct clk * __init sunxi_factors_clk_setup(struct device_node *node,
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const struct factors_data *data)
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{
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return sunxi_factors_register(node, data, &clk_lock);
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void __iomem *reg;
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reg = of_iomap(node, 0);
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if (!reg) {
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pr_err("Could not get registers for factors-clk: %s\n",
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node->name);
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return NULL;
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}
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return sunxi_factors_register(node, data, &clk_lock, reg);
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}
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