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Commit 6253be0f authored by Saravana Kannan's avatar Saravana Kannan
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 8c0c40d9

drivers/devfreq/devfreq.c

+11 −4
Original line number Diff line number Diff line
@@ -940,19 +940,26 @@ static ssize_t show_available_freqs(struct device *d, 
	struct devfreq *df = to_devfreq(d);

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

	struct 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();

	use_opp = dev_pm_opp_get_opp_count(dev) > 0;

	do {

		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);

	} while (use_opp || (!use_opp && i < max_state));

	rcu_read_unlock();



	/* Truncate the trailing space */