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SubjectRe: [PATCH v5 4/4] media: s5p-tv: Fix mixer driver to work with CCF
rename to 'media: s5p-tv: mixer: integrate with CCF'

On 09/21/2013 05:00 PM, Mateusz Krawczuk wrote:
> Replace clk_enable by clock_enable_prepare and clk_disable with clk_disable_unprepare.
> Clock prepare is required by Clock Common Framework, and old clock driver didn`t support it.
> Without it Common Clock Framework prints a warning.
>
> Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

Acked-by: Tomasz Stanislawski <t.stanislaws@samsung.com>

> ---
> drivers/media/platform/s5p-tv/mixer_drv.c | 34 +++++++++++++++++++++++++------
> 1 file changed, 28 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/s5p-tv/mixer_drv.c b/drivers/media/platform/s5p-tv/mixer_drv.c
> index 8ce7c3e..7eea286 100644
> --- a/drivers/media/platform/s5p-tv/mixer_drv.c
> +++ b/drivers/media/platform/s5p-tv/mixer_drv.c
> @@ -347,19 +347,41 @@ static int mxr_runtime_resume(struct device *dev)
> {
> struct mxr_device *mdev = to_mdev(dev);
> struct mxr_resources *res = &mdev->res;
> + int ret;
>
> dev_dbg(mdev->dev, "resume - start\n");
> mutex_lock(&mdev->mutex);
> /* turn clocks on */
> - clk_enable(res->mixer);
> - clk_enable(res->vp);
> - clk_enable(res->sclk_mixer);
> + ret = clk_prepare_enable(res->mixer);
> + if (ret < 0) {
> + dev_err(mdev->dev, "clk_prepare_enable(mixer) failed\n");
> + goto fail;
> + }
> + ret = clk_prepare_enable(res->vp);
> + if (ret < 0) {
> + dev_err(mdev->dev, "clk_prepare_enable(vp) failed\n");
> + goto fail_mixer;
> + }
> + ret = clk_prepare_enable(res->sclk_mixer);
> + if (ret < 0) {
> + dev_err(mdev->dev, "clk_prepare_enable(sclk_mixer) failed\n");
> + goto fail_vp;
> + }
> /* apply default configuration */
> mxr_reg_reset(mdev);
> dev_dbg(mdev->dev, "resume - finished\n");
>
> mutex_unlock(&mdev->mutex);
> return 0;
> +
> +fail_vp:
> + clk_disable_unprepare(res->vp);
> +fail_mixer:
> + clk_disable_unprepare(res->mixer);
> +fail:
> + mutex_unlock(&mdev->mutex);
> + dev_err(mdev->dev, "resume failed\n");
> + return ret;
> }
>
> static int mxr_runtime_suspend(struct device *dev)
> @@ -369,9 +391,9 @@ static int mxr_runtime_suspend(struct device *dev)
> dev_dbg(mdev->dev, "suspend - start\n");
> mutex_lock(&mdev->mutex);
> /* turn clocks off */
> - clk_disable(res->sclk_mixer);
> - clk_disable(res->vp);
> - clk_disable(res->mixer);
> + clk_disable_unprepare(res->sclk_mixer);
> + clk_disable_unprepare(res->vp);
> + clk_disable_unprepare(res->mixer);
> mutex_unlock(&mdev->mutex);
> dev_dbg(mdev->dev, "suspend - finished\n");
> return 0;
>



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