diff options
Diffstat (limited to 'drivers/clk/qcom/clk-dummy.c')
| -rw-r--r-- | drivers/clk/qcom/clk-dummy.c | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/drivers/clk/qcom/clk-dummy.c b/drivers/clk/qcom/clk-dummy.c index 3205fbc6b8ba..e06a829e508c 100644 --- a/drivers/clk/qcom/clk-dummy.c +++ b/drivers/clk/qcom/clk-dummy.c @@ -15,14 +15,18 @@ #include <linux/of.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/reset-controller.h> struct clk_dummy { struct clk_hw hw; + struct reset_controller_dev reset; unsigned long rrate; }; #define to_clk_dummy(_hw) container_of(_hw, struct clk_dummy, hw) +#define RESET_MAX 100 + static int dummy_clk_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { @@ -51,22 +55,48 @@ static unsigned long dummy_clk_recalc_rate(struct clk_hw *hw, return dummy->rrate; } +static int dummy_clk_set_flags(struct clk_hw *hw, unsigned flags) +{ + return 0; +} + struct clk_ops clk_dummy_ops = { .set_rate = dummy_clk_set_rate, .round_rate = dummy_clk_round_rate, .recalc_rate = dummy_clk_recalc_rate, + .set_flags = dummy_clk_set_flags, }; EXPORT_SYMBOL_GPL(clk_dummy_ops); +static int dummy_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + pr_debug("%s\n", __func__); + return 0; +} + +static int dummy_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + pr_debug("%s\n", __func__); + return 0; +} + +static struct reset_control_ops dummy_reset_ops = { + .assert = dummy_reset_assert, + .deassert = dummy_reset_deassert, +}; + /** * clk_register_dummy - register dummy clock with the * clock framework * @dev: device that is registering this clock * @name: name of this clock * @flags: framework-specific flags + * @node: device node */ static struct clk *clk_register_dummy(struct device *dev, const char *name, - unsigned long flags) + unsigned long flags, struct device_node *node) { struct clk_dummy *dummy; struct clk *clk; @@ -85,8 +115,20 @@ static struct clk *clk_register_dummy(struct device *dev, const char *name, /* register the clock */ clk = clk_register(dev, &dummy->hw); - if (IS_ERR(clk)) + if (IS_ERR(clk)) { kfree(dummy); + return clk; + } + + dummy->reset.of_node = node; + dummy->reset.ops = &dummy_reset_ops; + dummy->reset.nr_resets = RESET_MAX; + + if (reset_controller_register(&dummy->reset)) + pr_err("Failed to register reset controller for %s\n", name); + else + pr_info("Successfully registered a dummy reset controller for %s\n", + name); return clk; } @@ -101,10 +143,15 @@ static void of_dummy_clk_setup(struct device_node *node) of_property_read_string(node, "clock-output-names", &clk_name); - clk = clk_register_dummy(NULL, clk_name, 0); + clk = clk_register_dummy(NULL, clk_name, 0, node); if (!IS_ERR(clk)) of_clk_add_provider(node, of_clk_src_simple_get, clk); + else { + pr_err("Failed to register dummy clock controller for %s\n", + clk_name); + return; + } - pr_info("%s: Dummy clock registered\n", clk_name); + pr_info("Successfully registered dummy clock for %s\n", clk_name); } CLK_OF_DECLARE(dummy_clk, "qcom,dummycc", of_dummy_clk_setup); |