linux-kernel - [PATCH 4/4] cpufreq: OMAP: scale the iva coprocessor if available

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Message-Id: <1352252861-18384-5-git-send-email-jemele@gmail.com>
Date:	Tue,  6 Nov 2012 17:47:41 -0800
From:	Joshua Emele <jemele@...il.com>
To:	Kevin Hilman <khilman@...com>, "Rafael J. Wysocki" <rjw@...k.pl>,
	linux-omap@...r.kernel.org, cpufreq@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Joshua Emele <jemele@...il.com>
Subject: [PATCH 4/4] cpufreq: OMAP: scale the iva coprocessor if available


Signed-off-by: Joshua Emele <jemele@...il.com>
---
 drivers/cpufreq/omap-cpufreq.c |   17 ++++++++++++++---
 1 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index e8bcad8..103fa8b 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -79,7 +79,7 @@ static int omap_target(struct cpufreq_policy *policy,
 		       unsigned int target_freq,
 		       unsigned int relation)
 {
-	unsigned int i;
+	unsigned int i, opp_index;
 	int r, ret = 0;
 	struct cpufreq_freqs freqs;
 	struct opp *opp;
@@ -92,13 +92,13 @@ static int omap_target(struct cpufreq_policy *policy,
 	}
 
 	ret = cpufreq_frequency_table_target(policy, freq_table, target_freq,
-			relation, &i);
+			relation, &opp_index);
 	if (ret) {
 		dev_dbg(mpu_dev, "%s: cpu%d: no freq match for %d(ret=%d)\n",
 			__func__, policy->cpu, target_freq, ret);
 		return ret;
 	}
-	freqs.new = freq_table[i].frequency;
+	freqs.new = freq_table[opp_index].frequency;
 	if (!freqs.new) {
 		dev_err(mpu_dev, "%s: cpu%d: no match for freq %d\n", __func__,
 			policy->cpu, target_freq);
@@ -161,6 +161,17 @@ static int omap_target(struct cpufreq_policy *policy,
 	}
 
 	freqs.new = omap_getspeed(policy->cpu);
+
+	if (!ret && iva_freq_table && iva_clk) {
+		const unsigned long iva_rate =
+			iva_freq_table[opp_index].frequency * 1000;
+		ret = clk_set_rate(iva_clk, iva_rate);
+		if (ret) {
+			pr_err("%s: failed to set %s rate %lu[%d]\n",
+					__func__, iva_clk->name, iva_rate, ret);
+		}
+	}
+
 #ifdef CONFIG_SMP
 	/*
 	 * Note that loops_per_jiffy is not updated on SMP systems in
-- 
1.7.6.5

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