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https://git.yoctoproject.org/meta-ti
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Denys Dmytriyenko
88867c1d96
Move non-essential, outdated, best-effort pieces, as well, as those requiring extra non-standard dependencies besides oe-core. Signed-off-by: Denys Dmytriyenko <denys@ti.com>
83 lines
2.5 KiB
Diff
83 lines
2.5 KiB
Diff
From dac6c4c03140835b758e32c72eb004d379c35fec Mon Sep 17 00:00:00 2001
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From: Thara Gopinath <thara@ti.com>
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Date: Fri, 29 Oct 2010 20:43:10 +0530
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Subject: [PATCH 07/20] OMAP: Introduce API in the OPP layer to find the opp entry corresponding to a voltage.
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This patch adds an API in the opp layer to get the opp table entry
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corresponding to the voltage passed as the parameter.
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Signed-off-by: Thara Gopinath <thara@ti.com>
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---
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drivers/base/power/opp.c | 28 ++++++++++++++++++++++++++++
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include/linux/opp.h | 8 ++++++++
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2 files changed, 36 insertions(+), 0 deletions(-)
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diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
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index 2bb9b4c..60b4478 100644
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--- a/drivers/base/power/opp.c
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+++ b/drivers/base/power/opp.c
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@@ -354,6 +354,34 @@ struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq)
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}
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/**
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+ * opp_find_voltage() - search for an exact voltage
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+ * @dev: device pointer associated with the opp type
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+ * @volt: voltage to search for
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+ *
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+ * Searches for exact match in the opp list and returns handle to the matching
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+ * opp if found, else returns ERR_PTR in case of error and should be handled
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+ * using IS_ERR.
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+ */
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+struct opp *opp_find_voltage(struct device *dev, unsigned long volt)
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+{
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+ struct device_opp *dev_opp;
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+ struct opp *temp_opp, *opp = ERR_PTR(-ENODEV);
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+
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+ dev_opp = find_device_opp(dev);
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+ if (IS_ERR(dev_opp))
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+ return opp;
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+
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+ list_for_each_entry_rcu(temp_opp, &dev_opp->opp_list, node) {
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+ if (temp_opp->available && temp_opp->u_volt == volt) {
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+ opp = temp_opp;
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+ break;
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+ }
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+ }
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+
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+ return opp;
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+}
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+
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+/**
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* opp_add() - Add an OPP table from a table definitions
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* @dev: device for which we do this operation
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* @freq: Frequency in Hz for this OPP
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diff --git a/include/linux/opp.h b/include/linux/opp.h
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index 5449945..4977d5c 100644
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--- a/include/linux/opp.h
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+++ b/include/linux/opp.h
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@@ -34,6 +34,8 @@ struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq);
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struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq);
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+struct opp *opp_find_voltage(struct device *dev, unsigned long volt);
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+
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int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt);
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int opp_enable(struct device *dev, unsigned long freq);
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@@ -74,6 +76,12 @@ static inline struct opp *opp_find_freq_ceil(struct device *dev,
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return ERR_PTR(-EINVAL);
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}
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+static inline struct opp *opp_find_voltage(struct device *dev,
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+ unsigned long volt)
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+{
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+ return ERR_PTR(-EINVAL);
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+}
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+
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static inline int opp_add(struct device *dev, unsigned long freq,
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unsigned long u_volt)
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{
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--
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1.6.6.1
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