[PATCH V2] clk: Add composite clock type

Hiroshi Doyu
2013-02-04T09:37:39Z

Hi Prashant,

Prashant Gaikwad <pgaikwad@nvidia.com> wrote @ Mon, 4 Feb 2013 09:11:22 +0100:

> +struct clk *clk_register_composite(struct device *dev, const char *name,
> + const char **parent_names, int num_parents,
> + struct clk_hw *mux_hw, const struct clk_ops *mux_ops,
> + struct clk_hw *div_hw, const struct clk_ops *div_ops,
> + struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
> + unsigned long flags)
> +{
> + struct clk *clk;
> + struct clk_init_data init;
> + struct clk_composite *composite;
> + struct clk_ops *clk_composite_ops;
> +
> + composite = kzalloc(sizeof(*composite), GFP_KERNEL);
> + if (!composite) {
> + pr_err("%s: could not allocate composite clk\n", __func__);
> + return ERR_PTR(-ENOMEM);
> + }
> +
> + init.name = name;
> + init.flags = flags | CLK_IS_BASIC;
> + init.parent_names = parent_names;
> + init.num_parents = num_parents;
> +
> + /* allocate the clock ops */
> + clk_composite_ops = kzalloc(sizeof(*clk_composite_ops), GFP_KERNEL);

The members of "clk_composite_ops" seems to be always assigned
statically. Istead of dynamically allocating/assigning, can't we just
have "clk_composite_ops" statically as below?

static struct clk_ops clk_composite_ops = {
.get_parent = clk_composite_get_parent;
.set_parent = clk_composite_set_parent;
.recalc_rate = clk_composite_recalc_rate;
.round_rate = clk_composite_round_rate;
.set_rate = clk_composite_set_rate;
.is_enabled = clk_composite_is_enabled;
.enable = clk_composite_enable;
.disable = clk_composite_disable;
};

struct clk *clk_register_composite(struct device *dev, const char *name,
const char **parent_names, int num_parents,
struct clk_hw *mux_hw, const struct clk_ops *mux_ops,
struct clk_hw *div_hw, const struct clk_ops *div_ops,
struct clk_hw *gate_hw, const struct clk_ops *gate_ops,
unsigned long flags)
{
.....

init.ops = &clk_composite_ops;