On 07/02/14 15:19, Thomas Abraham wrote: > From: Thomas Abraham <[email protected]> > > 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 <[email protected]> > Cc: Lukasz Majewski <[email protected]> > Signed-off-by: Thomas Abraham <[email protected]> > --- > 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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
