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path: root/drivers/clk/sunxi/clk-factors.c
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Diffstat (limited to 'drivers/clk/sunxi/clk-factors.c')
-rw-r--r--drivers/clk/sunxi/clk-factors.c67
1 files changed, 3 insertions, 64 deletions
diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c
index 88523f91d9b7..9e232644f07e 100644
--- a/drivers/clk/sunxi/clk-factors.c
+++ b/drivers/clk/sunxi/clk-factors.c
@@ -30,17 +30,9 @@
* parent - fixed parent. No clk_set_parent support
*/
-struct clk_factors {
- struct clk_hw hw;
- void __iomem *reg;
- struct clk_factors_config *config;
- void (*get_factors) (u32 *rate, u32 parent, u8 *n, u8 *k, u8 *m, u8 *p);
- spinlock_t *lock;
-};
-
#define to_clk_factors(_hw) container_of(_hw, struct clk_factors, hw)
-#define SETMASK(len, pos) (((-1U) >> (31-len)) << (pos))
+#define SETMASK(len, pos) (((1U << (len)) - 1) << (pos))
#define CLRMASK(len, pos) (~(SETMASK(len, pos)))
#define FACTOR_GET(bit, len, reg) (((reg) & SETMASK(len, bit)) >> (bit))
@@ -88,7 +80,7 @@ static long clk_factors_round_rate(struct clk_hw *hw, unsigned long rate,
static int clk_factors_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
- u8 n, k, m, p;
+ u8 n = 0, k = 0, m = 0, p = 0;
u32 reg;
struct clk_factors *factors = to_clk_factors(hw);
struct clk_factors_config *config = factors->config;
@@ -120,61 +112,8 @@ static int clk_factors_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
-static const struct clk_ops clk_factors_ops = {
+const struct clk_ops clk_factors_ops = {
.recalc_rate = clk_factors_recalc_rate,
.round_rate = clk_factors_round_rate,
.set_rate = clk_factors_set_rate,
};
-
-/**
- * clk_register_factors - register a factors clock with
- * the clock framework
- * @dev: device registering this clock
- * @name: name of this clock
- * @parent_name: name of clock's parent
- * @flags: framework-specific flags
- * @reg: register address to adjust factors
- * @config: shift and width of factors n, k, m and p
- * @get_factors: function to calculate the factors for a given frequency
- * @lock: shared register lock for this clock
- */
-struct clk *clk_register_factors(struct device *dev, const char *name,
- const char *parent_name,
- unsigned long flags, void __iomem *reg,
- struct clk_factors_config *config,
- void (*get_factors)(u32 *rate, u32 parent,
- u8 *n, u8 *k, u8 *m, u8 *p),
- spinlock_t *lock)
-{
- struct clk_factors *factors;
- struct clk *clk;
- struct clk_init_data init;
-
- /* allocate the factors */
- factors = kzalloc(sizeof(struct clk_factors), GFP_KERNEL);
- if (!factors) {
- pr_err("%s: could not allocate factors clk\n", __func__);
- return ERR_PTR(-ENOMEM);
- }
-
- init.name = name;
- init.ops = &clk_factors_ops;
- init.flags = flags;
- init.parent_names = (parent_name ? &parent_name : NULL);
- init.num_parents = (parent_name ? 1 : 0);
-
- /* struct clk_factors assignments */
- factors->reg = reg;
- factors->config = config;
- factors->lock = lock;
- factors->hw.init = &init;
- factors->get_factors = get_factors;
-
- /* register the clock */
- clk = clk_register(dev, &factors->hw);
-
- if (IS_ERR(clk))
- kfree(factors);
-
- return clk;
-}