linux-kernel - [PATCH 3/4] cpufreq: OMAP: ensure the iva coprocessor is at the same opp as the mpu

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Message-Id: <1352252861-18384-4-git-send-email-jemele@gmail.com>
Date:	Tue,  6 Nov 2012 17:47:40 -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 3/4] cpufreq: OMAP: ensure the iva coprocessor is at the same opp as the mpu


Signed-off-by: Joshua Emele <jemele@...il.com>
---
 drivers/cpufreq/omap-cpufreq.c |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index d8a751f..e8bcad8 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -220,6 +220,9 @@ static inline void clk_free(void)
 static int __cpuinit omap_iva_init(struct cpufreq_policy *policy)
 {
 	int result;
+	unsigned long iva_rate;
+	unsigned int opp_index, mpu_freq = omap_getspeed(policy->cpu);
+
 	if (!iva_clk_name) {
 		pr_info("%s: iva unavailable\n", __func__);
 		return 0;
@@ -241,6 +244,21 @@ static int __cpuinit omap_iva_init(struct cpufreq_policy *policy)
 				__func__, policy->cpu, result);
 		return result;
 	}
+	result = cpufreq_frequency_table_target(policy, freq_table, mpu_freq,
+		CPUFREQ_RELATION_L, &opp_index);
+	if (result) {
+		dev_err(mpu_dev, "%s: cpu%d: no freq match for %u[%d]\n",
+				__func__, policy->cpu, mpu_freq, result);
+		return result;
+	}
+	iva_rate = iva_freq_table[opp_index].frequency * 1000;
+	result = clk_set_rate(iva_clk, iva_rate);
+	if (result) {
+		pr_err("%s: cpu%d: failed to set %s rate %lu[%d]\n",
+				__func__, policy->cpu, iva_clk->name, iva_rate,
+				result);
+		return result;
+	}
 	return 0;
 }
 
-- 
1.7.6.5

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