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Commit 345ca962 authored by Saravana Kannan's avatar Saravana Kannan Committed by Stephen Boyd
Browse files

PM / devfreq: Use freq_table for available_frequencies 



Some devices use freq_table instead of OPP. For those devices, the
available_frequencies file shows up empty. Fix that by using freq_table to
generate the available_frequencies data when OPP is not present.

Change-Id: Ibea8b388ee81c55d2eeddd8a1e2c18c91faed8c7
Signed-off-by: default avatarSaravana Kannan <skannan@codeaurora.org>
parent da676f5d

drivers/devfreq/devfreq.c

+12 −5
Original line number Diff line number Diff line
@@ -1133,19 +1133,26 @@ static ssize_t available_frequencies_show(struct device *d, 
	struct devfreq *df = to_devfreq(d);

	struct device *dev = df->dev.parent;

	struct dev_pm_opp *opp;

	unsigned int i = 0, max_state = df->profile->max_state;

	bool use_opp;

	ssize_t count = 0;

	unsigned long freq = 0;



	rcu_read_lock();

	do {

	use_opp = dev_pm_opp_get_opp_count(dev) > 0;

	while (use_opp || (!use_opp && i < max_state)) {

		if (use_opp) {

			opp = dev_pm_opp_find_freq_ceil(dev, &freq);

			if (IS_ERR(opp))

				break;

		} else {

			freq = df->profile->freq_table[i++];

		}



		count += scnprintf(&buf[count], (PAGE_SIZE - count - 2),

				   "%lu ", freq);

		freq++;

	} while (1);

	}

	rcu_read_unlock();



	/* Truncate the trailing space */