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clk: si5351: Migrate to clk_hw based OF and registration APIs
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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 <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: Sören Brinkmann <[email protected]>
Cc: Mike Looijmans <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
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@bebarino
bebarino committed Aug 25, 2016
1 parent d06e46c commit 4d89c3d
Showing 1 changed file with 41 additions and 30 deletions.
71 changes: 41 additions & 30 deletions drivers/clk/clk-si5351.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand All @@ -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[] = {
Expand Down Expand Up @@ -1307,11 +1307,31 @@ static int si5351_dt_parse(struct i2c_client *client,
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,
Expand All @@ -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;
Expand Down Expand Up @@ -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;
}

Expand All @@ -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;
}
}
Expand All @@ -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;
}

Expand All @@ -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;
}

Expand All @@ -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;
}
Expand All @@ -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;
}
}
Expand All @@ -1575,28 +1586,28 @@ 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);
}
}
}

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;
Expand Down

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