Date: Thu, 23 Aug 2012 10:44:49 +0000 (GMT)
From: MyungJoo Ham <myungjoo.ham@samsung.com>
Subject: Re: [PATCH 2/2] devfreq: exynos4: Support initialization of freq_table
 and max_state of devfreq's profile.
To: =?euc-kr?Q?=C0=CC=C1=BE=C8=AD?= <jonghwa3.lee@samsung.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>
Cc: =?euc-kr?Q?=B9=DA=B0=E6=B9=CE?= <kyungmin.park@samsung.com>,
        Mike Turquette <mturquette@ti.com>, "Rafael J. Wysocki" <rjw@sisk.pl>,
        Xiaoguang Chen <chenxg@marvell.com>
Reply-to: myungjoo.ham@samsung.com
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> 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@samsung.com>

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.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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