[PATCH 28/34] clk: si5351: Migrate to clk_hw based OF and registration APIs
From: Stephen Boyd
Date: Wed Jun 01 2016 - 19:18:45 EST
Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs.
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: SÃren Brinkmann <soren.brinkmann@xxxxxxxxxx>
Cc: Mike Looijmans <mike.looijmans@xxxxxxxx>
Signed-off-by: Stephen Boyd <stephen.boyd@xxxxxxxxxx>
---
See commit 58657d189a2f and it's children for details on this
new registration API.
drivers/clk/clk-si5351.c | 71 ++++++++++++++++++++++++++++--------------------
1 file changed, 41 insertions(+), 30 deletions(-)
diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
index b1bc12c045d3..b051db43fae1 100644
--- a/drivers/clk/clk-si5351.c
+++ b/drivers/clk/clk-si5351.c
@@ -54,7 +54,6 @@ struct si5351_driver_data {
enum si5351_variant variant;
struct i2c_client *client;
struct regmap *regmap;
- struct clk_onecell_data onecell;
struct clk *pxtal;
const char *pxtal_name;
@@ -66,6 +65,7 @@ struct si5351_driver_data {
struct si5351_hw_data pll[2];
struct si5351_hw_data *msynth;
struct si5351_hw_data *clkout;
+ size_t num_clkout;
};
static const char * const si5351_input_names[] = {
@@ -1307,11 +1307,31 @@ put_child:
of_node_put(child);
return -EINVAL;
}
+
+static struct clk_hw *
+si53351_of_clk_get(struct of_phandle_args *clkspec, void *data)
+{
+ struct si5351_driver_data *drvdata = data;
+ unsigned int idx = clkspec->args[0];
+
+ if (idx >= drvdata->num_clkout) {
+ pr_err("%s: invalid index %u\n", __func__, idx);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return &drvdata->clkout[idx].hw;
+}
#else
static int si5351_dt_parse(struct i2c_client *client, enum si5351_variant variant)
{
return 0;
}
+
+static struct clk_hw *
+si53351_of_clk_get(struct of_phandle_args *clkspec, void *data)
+{
+ return NULL;
+}
#endif /* CONFIG_OF */
static int si5351_i2c_probe(struct i2c_client *client,
@@ -1321,7 +1341,6 @@ static int si5351_i2c_probe(struct i2c_client *client,
struct si5351_platform_data *pdata;
struct si5351_driver_data *drvdata;
struct clk_init_data init;
- struct clk *clk;
const char *parent_names[4];
u8 num_parents, num_clocks;
int ret, n;
@@ -1438,10 +1457,9 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.num_parents = 1;
}
drvdata->xtal.init = &init;
- clk = devm_clk_register(&client->dev, &drvdata->xtal);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev, &drvdata->xtal);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n", init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
@@ -1456,11 +1474,10 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.num_parents = 1;
}
drvdata->clkin.init = &init;
- clk = devm_clk_register(&client->dev, &drvdata->clkin);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev, &drvdata->clkin);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n",
init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
}
@@ -1480,10 +1497,9 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.flags = 0;
init.parent_names = parent_names;
init.num_parents = num_parents;
- clk = devm_clk_register(&client->dev, &drvdata->pll[0].hw);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev, &drvdata->pll[0].hw);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n", init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
@@ -1505,10 +1521,9 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.parent_names = parent_names;
init.num_parents = num_parents;
}
- clk = devm_clk_register(&client->dev, &drvdata->pll[1].hw);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev, &drvdata->pll[1].hw);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n", init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
@@ -1524,13 +1539,9 @@ static int si5351_i2c_probe(struct i2c_client *client,
sizeof(*drvdata->msynth), GFP_KERNEL);
drvdata->clkout = devm_kzalloc(&client->dev, num_clocks *
sizeof(*drvdata->clkout), GFP_KERNEL);
+ drvdata->num_clkout = num_clocks;
- drvdata->onecell.clk_num = num_clocks;
- drvdata->onecell.clks = devm_kzalloc(&client->dev,
- num_clocks * sizeof(*drvdata->onecell.clks), GFP_KERNEL);
-
- if (WARN_ON(!drvdata->msynth || !drvdata->clkout ||
- !drvdata->onecell.clks)) {
+ if (WARN_ON(!drvdata->msynth || !drvdata->clkout)) {
ret = -ENOMEM;
goto err_clk;
}
@@ -1547,11 +1558,11 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.flags |= CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
init.num_parents = 2;
- clk = devm_clk_register(&client->dev, &drvdata->msynth[n].hw);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev,
+ &drvdata->msynth[n].hw);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n",
init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
}
@@ -1575,19 +1586,19 @@ static int si5351_i2c_probe(struct i2c_client *client,
init.flags |= CLK_SET_RATE_PARENT;
init.parent_names = parent_names;
init.num_parents = num_parents;
- clk = devm_clk_register(&client->dev, &drvdata->clkout[n].hw);
- if (IS_ERR(clk)) {
+ ret = devm_clk_hw_register(&client->dev,
+ &drvdata->clkout[n].hw);
+ if (ret) {
dev_err(&client->dev, "unable to register %s\n",
init.name);
- ret = PTR_ERR(clk);
goto err_clk;
}
- drvdata->onecell.clks[n] = clk;
/* set initial clkout rate */
if (pdata->clkout[n].rate != 0) {
int ret;
- ret = clk_set_rate(clk, pdata->clkout[n].rate);
+ ret = clk_set_rate(drvdata->clkout[n].hw.clk,
+ pdata->clkout[n].rate);
if (ret != 0) {
dev_err(&client->dev, "Cannot set rate : %d\n",
ret);
@@ -1595,8 +1606,8 @@ static int si5351_i2c_probe(struct i2c_client *client,
}
}
- ret = of_clk_add_provider(client->dev.of_node, of_clk_src_onecell_get,
- &drvdata->onecell);
+ ret = of_clk_add_hw_provider(client->dev.of_node, si53351_of_clk_get,
+ drvdata);
if (ret) {
dev_err(&client->dev, "unable to add clk provider\n");
goto err_clk;
--
2.7.4