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path: root/drivers/clk/tegra/cvb.c
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Diffstat (limited to 'drivers/clk/tegra/cvb.c')
-rw-r--r--drivers/clk/tegra/cvb.c71
1 files changed, 43 insertions, 28 deletions
diff --git a/drivers/clk/tegra/cvb.c b/drivers/clk/tegra/cvb.c
index 69c74eec3a4b..624115e82ff9 100644
--- a/drivers/clk/tegra/cvb.c
+++ b/drivers/clk/tegra/cvb.c
@@ -61,29 +61,28 @@ static int round_voltage(int mv, const struct rail_alignment *align, int up)
return mv;
}
-static int build_opp_table(const struct cvb_table *d,
- int speedo_value,
- unsigned long max_freq,
- struct device *opp_dev)
+static int build_opp_table(struct device *dev, const struct cvb_table *table,
+ int speedo_value, unsigned long max_freq)
{
+ const struct rail_alignment *align = &table->alignment;
int i, ret, dfll_mv, min_mv, max_mv;
- const struct cvb_table_freq_entry *table = NULL;
- const struct rail_alignment *align = &d->alignment;
- min_mv = round_voltage(d->min_millivolts, align, UP);
- max_mv = round_voltage(d->max_millivolts, align, DOWN);
+ min_mv = round_voltage(table->min_millivolts, align, UP);
+ max_mv = round_voltage(table->max_millivolts, align, DOWN);
for (i = 0; i < MAX_DVFS_FREQS; i++) {
- table = &d->cvb_table[i];
- if (!table->freq || (table->freq > max_freq))
+ const struct cvb_table_freq_entry *entry = &table->entries[i];
+
+ if (!entry->freq || (entry->freq > max_freq))
break;
- dfll_mv = get_cvb_voltage(
- speedo_value, d->speedo_scale, &table->coefficients);
- dfll_mv = round_cvb_voltage(dfll_mv, d->voltage_scale, align);
+ dfll_mv = get_cvb_voltage(speedo_value, table->speedo_scale,
+ &entry->coefficients);
+ dfll_mv = round_cvb_voltage(dfll_mv, table->voltage_scale,
+ align);
dfll_mv = clamp(dfll_mv, min_mv, max_mv);
- ret = dev_pm_opp_add(opp_dev, table->freq, dfll_mv * 1000);
+ ret = dev_pm_opp_add(dev, entry->freq, dfll_mv * 1000);
if (ret)
return ret;
}
@@ -92,7 +91,7 @@ static int build_opp_table(const struct cvb_table *d,
}
/**
- * tegra_cvb_build_opp_table - build OPP table from Tegra CVB tables
+ * tegra_cvb_add_opp_table - build OPP table from Tegra CVB tables
* @cvb_tables: array of CVB tables
* @sz: size of the previously mentioned array
* @process_id: process id of the HW module
@@ -108,26 +107,42 @@ static int build_opp_table(const struct cvb_table *d,
* given @opp_dev. Returns a pointer to the struct cvb_table that matched
* or an ERR_PTR on failure.
*/
-const struct cvb_table *tegra_cvb_build_opp_table(
- const struct cvb_table *cvb_tables,
- size_t sz, int process_id,
- int speedo_id, int speedo_value,
- unsigned long max_rate,
- struct device *opp_dev)
+const struct cvb_table *
+tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *tables,
+ size_t count, int process_id, int speedo_id,
+ int speedo_value, unsigned long max_freq)
{
- int i, ret;
+ size_t i;
+ int ret;
- for (i = 0; i < sz; i++) {
- const struct cvb_table *d = &cvb_tables[i];
+ for (i = 0; i < count; i++) {
+ const struct cvb_table *table = &tables[i];
- if (d->speedo_id != -1 && d->speedo_id != speedo_id)
+ if (table->speedo_id != -1 && table->speedo_id != speedo_id)
continue;
- if (d->process_id != -1 && d->process_id != process_id)
+
+ if (table->process_id != -1 && table->process_id != process_id)
continue;
- ret = build_opp_table(d, speedo_value, max_rate, opp_dev);
- return ret ? ERR_PTR(ret) : d;
+ ret = build_opp_table(dev, table, speedo_value, max_freq);
+ return ret ? ERR_PTR(ret) : table;
}
return ERR_PTR(-EINVAL);
}
+
+void tegra_cvb_remove_opp_table(struct device *dev,
+ const struct cvb_table *table,
+ unsigned long max_freq)
+{
+ unsigned int i;
+
+ for (i = 0; i < MAX_DVFS_FREQS; i++) {
+ const struct cvb_table_freq_entry *entry = &table->entries[i];
+
+ if (!entry->freq || (entry->freq > max_freq))
+ break;
+
+ dev_pm_opp_remove(dev, entry->freq);
+ }
+}