diff options
Diffstat (limited to 'drivers/clk/meson/clk-phase.c')
| -rw-r--r-- | drivers/clk/meson/clk-phase.c | 73 |
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"); |
