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path: root/drivers/clk/meson/clk-phase.c
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Diffstat (limited to 'drivers/clk/meson/clk-phase.c')
-rw-r--r--drivers/clk/meson/clk-phase.c73
1 files changed, 70 insertions, 3 deletions
diff --git a/drivers/clk/meson/clk-phase.c b/drivers/clk/meson/clk-phase.c
index fe22e171121a..58dd982e6878 100644
--- a/drivers/clk/meson/clk-phase.c
+++ b/drivers/clk/meson/clk-phase.c
@@ -58,10 +58,11 @@ static int meson_clk_phase_set_phase(struct clk_hw *hw, int degrees)
}
const struct clk_ops meson_clk_phase_ops = {
+ .init = clk_regmap_init,
.get_phase = meson_clk_phase_get_phase,
.set_phase = meson_clk_phase_set_phase,
};
-EXPORT_SYMBOL_GPL(meson_clk_phase_ops);
+EXPORT_SYMBOL_NS_GPL(meson_clk_phase_ops, "CLK_MESON");
/*
* This is a special clock for the audio controller.
@@ -83,6 +84,11 @@ static int meson_clk_triphase_sync(struct clk_hw *hw)
struct clk_regmap *clk = to_clk_regmap(hw);
struct meson_clk_triphase_data *tph = meson_clk_triphase_data(clk);
unsigned int val;
+ int ret;
+
+ ret = clk_regmap_init(hw);
+ if (ret)
+ return ret;
/* Get phase 0 and sync it to phase 1 and 2 */
val = meson_parm_read(clk->map, &tph->ph0);
@@ -123,8 +129,69 @@ const struct clk_ops meson_clk_triphase_ops = {
.get_phase = meson_clk_triphase_get_phase,
.set_phase = meson_clk_triphase_set_phase,
};
-EXPORT_SYMBOL_GPL(meson_clk_triphase_ops);
+EXPORT_SYMBOL_NS_GPL(meson_clk_triphase_ops, "CLK_MESON");
+
+/*
+ * This is a special clock for the audio controller.
+ * This drive a bit clock inverter for which the
+ * opposite value of the inverter bit needs to be manually
+ * set into another bit
+ */
+static inline struct meson_sclk_ws_inv_data *
+meson_sclk_ws_inv_data(struct clk_regmap *clk)
+{
+ return (struct meson_sclk_ws_inv_data *)clk->data;
+}
+
+static int meson_sclk_ws_inv_sync(struct clk_hw *hw)
+{
+ struct clk_regmap *clk = to_clk_regmap(hw);
+ struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+ unsigned int val;
+ int ret;
+
+ ret = clk_regmap_init(hw);
+ if (ret)
+ return ret;
+
+ /* Get phase and sync the inverted value to ws */
+ val = meson_parm_read(clk->map, &tph->ph);
+ meson_parm_write(clk->map, &tph->ws, val ? 0 : 1);
+
+ return 0;
+}
+
+static int meson_sclk_ws_inv_get_phase(struct clk_hw *hw)
+{
+ struct clk_regmap *clk = to_clk_regmap(hw);
+ struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+ unsigned int val;
+
+ val = meson_parm_read(clk->map, &tph->ph);
+
+ return meson_clk_degrees_from_val(val, tph->ph.width);
+}
+
+static int meson_sclk_ws_inv_set_phase(struct clk_hw *hw, int degrees)
+{
+ struct clk_regmap *clk = to_clk_regmap(hw);
+ struct meson_sclk_ws_inv_data *tph = meson_sclk_ws_inv_data(clk);
+ unsigned int val;
+
+ val = meson_clk_degrees_to_val(degrees, tph->ph.width);
+ meson_parm_write(clk->map, &tph->ph, val);
+ meson_parm_write(clk->map, &tph->ws, val ? 0 : 1);
+ return 0;
+}
+
+const struct clk_ops meson_sclk_ws_inv_ops = {
+ .init = meson_sclk_ws_inv_sync,
+ .get_phase = meson_sclk_ws_inv_get_phase,
+ .set_phase = meson_sclk_ws_inv_set_phase,
+};
+EXPORT_SYMBOL_NS_GPL(meson_sclk_ws_inv_ops, "CLK_MESON");
MODULE_DESCRIPTION("Amlogic phase driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
-MODULE_LICENSE("GPL v2");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS("CLK_MESON");