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Thu, 14 Sep 2023 00:08:13 -0700 (PDT) X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777005795880091667 X-GMAIL-MSGID: 1777005795880091667 From: Peng Fan SCMI v3.2 adds set/get parent clock commands, so update the clk driver to support them. Signed-off-by: Peng Fan --- drivers/clk/clk-scmi.c | 39 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index 2e1337b511eb..6a283020cbde 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; }; #define to_scmi_clk(clk) container_of(clk, struct scmi_clk, hw) @@ -78,6 +79,26 @@ 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); } +static int scmi_clk_set_parent(struct clk_hw *hw, u8 parent_index) +{ + struct scmi_clk *clk = 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 = to_scmi_clk(hw); + u32 parent_id; + int ret; + + ret = scmi_proto_clk_ops->parent_get(clk->ph, clk->id, &parent_id); + if (ret) + return 0; + + return parent_id; +} + static int scmi_clk_enable(struct clk_hw *hw) { struct scmi_clk *clk = to_scmi_clk(hw); @@ -139,6 +160,8 @@ static const struct clk_ops scmi_clk_ops = { .set_rate = scmi_clk_set_rate, .prepare = scmi_clk_enable, .unprepare = scmi_clk_disable, + .set_parent = scmi_clk_set_parent, + .get_parent = scmi_clk_get_parent, }; static const struct clk_ops scmi_atomic_clk_ops = { @@ -148,6 +171,8 @@ static const struct clk_ops scmi_atomic_clk_ops = { .enable = scmi_clk_atomic_enable, .disable = scmi_clk_atomic_disable, .is_enabled = scmi_clk_atomic_is_enabled, + .set_parent = scmi_clk_set_parent, + .get_parent = scmi_clk_get_parent, }; static int scmi_clk_ops_init(struct device *dev, struct scmi_clk *sclk, @@ -158,9 +183,10 @@ static int scmi_clk_ops_init(struct device *dev, struct scmi_clk *sclk, struct clk_init_data init = { .flags = CLK_GET_RATE_NOCACHE, - .num_parents = 0, + .num_parents = sclk->info->num_parents, .ops = scmi_ops, .name = sclk->info->name, + .parent_data = sclk->parent_data, }; sclk->hw.init = &init; @@ -250,6 +276,17 @@ static int scmi_clocks_probe(struct scmi_device *sdev) else scmi_ops = &scmi_clk_ops; + /* Initialize clock parent data. */ + if (sclk->info->num_parents > 0) { + sclk->parent_data = devm_kcalloc(dev, sclk->info->num_parents, + sizeof(*sclk->parent_data), GFP_KERNEL); + + for (int i = 0; i < sclk->info->num_parents; i++) { + sclk->parent_data[i].index = sclk->info->parents[i]; + sclk->parent_data[i].hw = hws[sclk->info->parents[i]]; + } + } + err = scmi_clk_ops_init(dev, sclk, scmi_ops); if (err) { dev_err(dev, "failed to register clock %d\n", idx);