linux-kernel - [PATCH 2/2] devfreq: exynos4: Support initialization of freq_table and max

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Message-id: <1345099767-13467-3-git-send-email-jonghwa3.lee@samsung.com>
Date:	Thu, 16 Aug 2012 15:49:27 +0900
From:	Jonghwa Lee <jonghwa3.lee@...sung.com>
To:	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org
Cc:	Kyungmin Park <kyungmin.park@...sung.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Mike Turquette <mturquette@...com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Xiaoguang Chen <chenxg@...vell.com>,
	Jonghwa Lee <jonghwa3.lee@...sung.com>
Subject: [PATCH 2/2] devfreq: exynos4: Support initialization of freq_table and
 max_state of devfreq's profile.

This patch initializes freq_table and max_state of devfreq's profile.
They will be used for creating transition table.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@...sung.com>
---
 drivers/devfreq/exynos4_bus.c |   30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletions(-)

diff --git a/drivers/devfreq/exynos4_bus.c b/drivers/devfreq/exynos4_bus.c
index 88ddc77..9c08855 100644
--- a/drivers/devfreq/exynos4_bus.c
+++ b/drivers/devfreq/exynos4_bus.c
@@ -985,7 +985,8 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
 	struct busfreq_data *data;
 	struct opp *opp;
 	struct device *dev = &pdev->dev;
-	int err = 0;
+	int err = 0, i;
+	unsigned int *freq_table;
 
 	data = kzalloc(sizeof(struct busfreq_data), GFP_KERNEL);
 	if (data == NULL) {
@@ -1042,6 +1043,33 @@ static __devinit int exynos4_busfreq_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, data);
 
+	switch (data->type) {
+	case TYPE_BUSF_EXYNOS4210:
+		freq_table = devm_kzalloc(&pdev->dev, sizeof(unsigned int) * EX4210_LV_NUM,
+					GFP_KERNEL);
+
+		for (i = 0; i < EX4210_LV_NUM; i++)
+			freq_table[i] = exynos4210_busclk_table[i].clk;
+
+		exynos4_devfreq_profile.max_state = EX4210_LV_NUM;
+		break;
+	case TYPE_BUSF_EXYNOS4x12:
+		freq_table = devm_kzalloc(&pdev->dev, sizeof(unsigned int) * EX4x12_LV_NUM,
+					GFP_KERNEL);
+
+		for (i = 0; i < EX4x12_LV_NUM; i++)
+			freq_table[i] = exynos4x12_mifclk_table[i].clk;
+
+		exynos4_devfreq_profile.max_state = EX4x12_LV_NUM;
+		break;
+	default:
+		dev_err(dev, "Cannot determine the device id %d\n", data->type);
+		err = -EINVAL;
+		goto err_opp_add;
+	}
+
+	exynos4_devfreq_profile.freq_table = freq_table;
+
 	busfreq_mon_reset(data);
 
 	data->devfreq = devfreq_add_device(dev, &exynos4_devfreq_profile,
-- 
1.7.4.1

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