Messages in this thread Patch in this message | | | From | Saravana Kannan <> | Subject | [PATCH] PM / devfreq: Use freq_table for available_frequencies | Date | Thu, 10 Apr 2014 19:54:41 -0700 |
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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.
Signed-off-by: Saravana Kannan <skannan@codeaurora.org> --- drivers/devfreq/devfreq.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 2042ec3..a715d15 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -912,19 +912,26 @@ 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(); + use_opp = dev_pm_opp_get_opp_count(dev) > 0; do { - opp = dev_pm_opp_find_freq_ceil(dev, &freq); - if (IS_ERR(opp)) - break; + 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 */ -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation
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