On 07/02/14 15:19, Thomas Abraham wrote:
> From: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
>
> Commit 6f19efc0 ("cpufreq: Add boost frequency support in core") adds
> support for CPU boost mode. This patch adds support for finding available
> boost frequencies from device tree and marking them as usable in boost mode.
>
> Cc: Nishanth Menon <nm@xxxxxx>
> Cc: Lukasz Majewski <l.majewski@xxxxxxxxxxx>
> Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
> ---
> drivers/base/power/opp.c | 34 +++++++++++++++++++++++++++++++++-
> 1 file changed, 33 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
> index fa41874..b636826 100644
> --- a/drivers/base/power/opp.c
> +++ b/drivers/base/power/opp.c
> @@ -628,7 +628,8 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev,
> struct device_opp *dev_opp;
> struct dev_pm_opp *opp;
> struct cpufreq_frequency_table *freq_table;
> - int i = 0;
> + int i = 0, j, len, ret;
> + u32 *boost_freqs = NULL;
>
> /* Pretend as if I am an updater */
> mutex_lock(&dev_opp_list_lock);
> @@ -650,10 +651,35 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev,
> return -ENOMEM;
> }
>
> + if (of_find_property(dev->of_node, "boost-frequency", &len)) {
> + if (len == 0 || (len & (sizeof(u32) - 1)) != 0) {
> + dev_err(dev, "%s: invalid boost frequency\n", __func__);
> + ret = -EINVAL;
> + goto err_boost;
> + }
> +
> + boost_freqs = kzalloc(len, GFP_KERNEL);
> + if (!boost_freqs) {
> + dev_warn(dev, "%s: no memory for boost freq table\n",
> + __func__);
> + ret = -ENOMEM;
> + goto err_boost;
> + }
> + of_property_read_u32_array(dev->of_node, "boost-frequency",
> + boost_freqs, len / sizeof(u32));
> + }
> +
> list_for_each_entry(opp, &dev_opp->opp_list, node) {
> if (opp->available) {
> freq_table[i].driver_data = i;
> freq_table[i].frequency = opp->rate / 1000;
> + for (j = 0; j < len / sizeof(u32) && boost_freqs; j++) {
> + if (boost_freqs[j] == freq_table[i].frequency) {
> + freq_table[i].driver_data =
> + CPUFREQ_BOOST_FREQ;
> + break;
> + }
> + }
> i++;
> }
> }
IIRC you had mentioned that the boost-opp was not limited to be a cpufreq, but
this change seems to be cpufreq only.
Regards,
Sudeep
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
