/**
* tegra_cvb_build_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
* @speedo_id: speedo id of the HW module
* @speedo_value: speedo value of the HW module
* @max_rate: highest safe clock rate
* @opp_dev: the struct device * for which the OPP table is built
*
* On Tegra, a CVB table encodes the relationship between operating voltage
* and safe maximal frequency for a given module (e.g. GPU or CPU). This
* function calculates the optimal voltage-frequency operating points
* for the given arguments and exports them via the OPP library for the
* 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)
{
int i, ret;
for (i = 0; i < sz; i++) {
const struct cvb_table *d = &cvb_tables[i];
if (d->speedo_id != -1 && d->speedo_id != speedo_id)
continue;
if (d->process_id != -1 && d->process_id != process_id)
continue;
ret = build_opp_table(d, speedo_value, max_rate, opp_dev);
return ret ? ERR_PTR(ret) : d;
}
return ERR_PTR(-EINVAL);
}
/**
* 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
* @speedo_id: speedo id of the HW module
* @speedo_value: speedo value of the HW module
* @max_rate: highest safe clock rate
* @opp_dev: the struct device * for which the OPP table is built
*
* On Tegra, a CVB table encodes the relationship between operating voltage
* and safe maximal frequency for a given module (e.g. GPU or CPU). This
* function calculates the optimal voltage-frequency operating points
* for the given arguments and exports them via the OPP library for the
* 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_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)
{
size_t i;
int ret;
for (i = 0; i < count; i++) {
const struct cvb_table *table = &tables[i];
if (table->speedo_id != -1 && table->speedo_id != speedo_id)
continue;
if (table->process_id != -1 && table->process_id != process_id)
continue;
ret = build_opp_table(dev, table, speedo_value, max_freq);
return ret ? ERR_PTR(ret) : table;
}
return ERR_PTR(-EINVAL);
}
