From 7c74c220e9c6d756953235e1f8e5b704569ea613 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sun, 23 Nov 2014 14:38:07 +0100 Subject: 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 Signed-off-by: Maxime Ripard --- drivers/clk/sunxi/clk-factors.c | 10 ++++------ drivers/clk/sunxi/clk-factors.h | 7 ++++--- drivers/clk/sunxi/clk-mod0.c | 24 ++++++++++++++++++++++-- drivers/clk/sunxi/clk-sun8i-mbus.c | 13 +++++++++++-- drivers/clk/sunxi/clk-sunxi.c | 11 ++++++++++- 5 files changed, 51 insertions(+), 14 deletions(-) (limited to 'drivers/clk/sunxi') diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c index 62e08fb58554..a9ebbd207d58 100644 --- a/drivers/clk/sunxi/clk-factors.c +++ b/drivers/clk/sunxi/clk-factors.c @@ -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, - const struct factors_data *data, - spinlock_t *lock) +struct clk *sunxi_factors_register(struct device_node *node, + const struct factors_data *data, + 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) diff --git a/drivers/clk/sunxi/clk-factors.h b/drivers/clk/sunxi/clk-factors.h index 912238fde132..171085ab5513 100644 --- a/drivers/clk/sunxi/clk-factors.h +++ b/drivers/clk/sunxi/clk-factors.h @@ -36,8 +36,9 @@ struct clk_factors { spinlock_t *lock; }; -struct clk * __init sunxi_factors_register(struct device_node *node, - const struct factors_data *data, - spinlock_t *lock); +struct clk *sunxi_factors_register(struct device_node *node, + const struct factors_data *data, + spinlock_t *lock, + void __iomem *reg); #endif diff --git a/drivers/clk/sunxi/clk-mod0.c b/drivers/clk/sunxi/clk-mod0.c index da0524eaee94..658d74f39451 100644 --- a/drivers/clk/sunxi/clk-mod0.c +++ b/drivers/clk/sunxi/clk-mod0.c @@ -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); diff --git a/drivers/clk/sunxi/clk-sun8i-mbus.c b/drivers/clk/sunxi/clk-sun8i-mbus.c index ef49786eefd3..14cd026064bf 100644 --- a/drivers/clk/sunxi/clk-sun8i-mbus.c +++ b/drivers/clk/sunxi/clk-sun8i-mbus.c @@ -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); diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c index cc5eab2d0469..9ba2c5ff2aeb 100644 --- a/drivers/clk/sunxi/clk-sunxi.c +++ b/drivers/clk/sunxi/clk-sunxi.c @@ -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); } -- cgit v1.2.3