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Signed-off-by: Peng Fan --- drivers/clk/clk-scmi.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++= +++- 1 file changed, 49 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index 2e1337b511eb..5aaca674830f 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -24,6 +24,7 @@ struct scmi_clk { struct clk_hw hw; const struct scmi_clock_info *info; const struct scmi_protocol_handle *ph; + struct clk_parent_data *parent_data; }; =20 #define to_scmi_clk(clk) container_of(clk, struct scmi_clk, hw) @@ -78,6 +79,35 @@ static int scmi_clk_set_rate(struct clk_hw *hw, unsigned= long rate, return scmi_proto_clk_ops->rate_set(clk->ph, clk->id, rate); } =20 +static int scmi_clk_set_parent(struct clk_hw *hw, u8 parent_index) +{ + struct scmi_clk *clk =3D to_scmi_clk(hw); + + return scmi_proto_clk_ops->parent_set(clk->ph, clk->id, parent_index); +} + +static u8 scmi_clk_get_parent(struct clk_hw *hw) +{ + struct scmi_clk *clk =3D to_scmi_clk(hw); + u32 parent_id; + int ret; + + ret =3D scmi_proto_clk_ops->parent_get(clk->ph, clk->id, &parent_id); + if (ret) + return 0; + + return parent_id; +} + +static int scmi_clk_determine_rate(struct clk_hw *hw, struct clk_rate_requ= est *req) +{ + /* + * Suppose all the requested rates are supported, and let firmware + * to handle the left work. + */ + return 0; +} + static int scmi_clk_enable(struct clk_hw *hw) { struct scmi_clk *clk =3D to_scmi_clk(hw); @@ -139,6 +169,9 @@ static const struct clk_ops scmi_clk_ops =3D { .set_rate =3D scmi_clk_set_rate, .prepare =3D scmi_clk_enable, .unprepare =3D scmi_clk_disable, + .set_parent =3D scmi_clk_set_parent, + .get_parent =3D scmi_clk_get_parent, + .determine_rate =3D scmi_clk_determine_rate, }; =20 static const struct clk_ops scmi_atomic_clk_ops =3D { @@ -148,6 +181,9 @@ static const struct clk_ops scmi_atomic_clk_ops =3D { .enable =3D scmi_clk_atomic_enable, .disable =3D scmi_clk_atomic_disable, .is_enabled =3D scmi_clk_atomic_is_enabled, + .set_parent =3D scmi_clk_set_parent, + .get_parent =3D scmi_clk_get_parent, + .determine_rate =3D scmi_clk_determine_rate, }; =20 static int scmi_clk_ops_init(struct device *dev, struct scmi_clk *sclk, @@ -158,9 +194,10 @@ static int scmi_clk_ops_init(struct device *dev, struc= t scmi_clk *sclk, =20 struct clk_init_data init =3D { .flags =3D CLK_GET_RATE_NOCACHE, - .num_parents =3D 0, + .num_parents =3D sclk->info->num_parents, .ops =3D scmi_ops, .name =3D sclk->info->name, + .parent_data =3D sclk->parent_data, }; =20 sclk->hw.init =3D &init; @@ -250,6 +287,17 @@ static int scmi_clocks_probe(struct scmi_device *sdev) else scmi_ops =3D &scmi_clk_ops; =20 + /* Initialize clock parent data. */ + if (sclk->info->num_parents > 0) { + sclk->parent_data =3D devm_kcalloc(dev, sclk->info->num_parents, + sizeof(*sclk->parent_data), GFP_KERNEL); + + for (int i =3D 0; i < sclk->info->num_parents; i++) { + sclk->parent_data[i].index =3D sclk->info->parents[i]; + sclk->parent_data[i].hw =3D hws[sclk->info->parents[i]]; + } + } + err =3D scmi_clk_ops_init(dev, sclk, scmi_ops); if (err) { dev_err(dev, "failed to register clock %d\n", idx); --=20 2.37.1