On Fri, Jul 06, 2012 at 09:13:11AM +0200, Javier Martin wrote:
> This driver wasn't converted to the new clock changes
> (clk_prepare_enable/clk_disable_unprepare). Also naming
> of emma-prp related clocks for the i.MX27 was not correct.
>
> Signed-off-by: Javier Martin <javier.mar...@vista-silicon.com>
> ---
> arch/arm/mach-imx/clk-imx27.c | 8 ++++---
> drivers/media/video/mx2_camera.c | 47
> +++++++++++++++++++++-----------------
> 2 files changed, 31 insertions(+), 24 deletions(-)
>
> @@ -1616,23 +1616,12 @@ static int __devinit mx27_camera_emma_init(struct
> mx2_camera_dev *pcdev)
> goto exit_iounmap;
> }
>
> - pcdev->clk_emma = clk_get(NULL, "emma");
> - if (IS_ERR(pcdev->clk_emma)) {
> - err = PTR_ERR(pcdev->clk_emma);
> - goto exit_free_irq;
> - }
> -
> - clk_enable(pcdev->clk_emma);
> -
> err = mx27_camera_emma_prp_reset(pcdev);
> if (err)
> - goto exit_clk_emma_put;
> + goto exit_free_irq;
>
> return err;
>
> -exit_clk_emma_put:
> - clk_disable(pcdev->clk_emma);
> - clk_put(pcdev->clk_emma);
> exit_free_irq:
> free_irq(pcdev->irq_emma, pcdev);
> exit_iounmap:
> @@ -1655,6 +1644,7 @@ static int __devinit mx2_camera_probe(struct
> platform_device *pdev)
>
> res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> irq_csi = platform_get_irq(pdev, 0);
> +
> if (res_csi == NULL || irq_csi < 0) {
> dev_err(&pdev->dev, "Missing platform resources data\n");
> err = -ENODEV;
> @@ -1668,12 +1658,26 @@ static int __devinit mx2_camera_probe(struct
> platform_device *pdev)
> goto exit;
> }
>
> - pcdev->clk_csi = clk_get(&pdev->dev, NULL);
> + pcdev->clk_csi = devm_clk_get(&pdev->dev, "ahb");
> if (IS_ERR(pcdev->clk_csi)) {
> dev_err(&pdev->dev, "Could not get csi clock\n");
> err = PTR_ERR(pcdev->clk_csi);
> goto exit_kfree;
> }
> + pcdev->clk_emma_ipg = devm_clk_get(&pdev->dev, "emma-ipg");
> + if (IS_ERR(pcdev->clk_emma_ipg)) {
> + err = PTR_ERR(pcdev->clk_emma_ipg);
> + goto exit_kfree;
> + }
> + pcdev->clk_emma_ahb = devm_clk_get(&pdev->dev, "emma-ahb");
> + if (IS_ERR(pcdev->clk_emma_ahb)) {
> + err = PTR_ERR(pcdev->clk_emma_ahb);
> + goto exit_kfree;
> + }
> +
> + clk_prepare_enable(pcdev->clk_csi);
> + clk_prepare_enable(pcdev->clk_emma_ipg);
> + clk_prepare_enable(pcdev->clk_emma_ahb);
>
> pcdev->res_csi = res_csi;
> pcdev->pdata = pdev->dev.platform_data;
> @@ -1768,8 +1772,8 @@ exit_free_emma:
> eallocctx:
> if (cpu_is_mx27()) {
> free_irq(pcdev->irq_emma, pcdev);
> - clk_disable(pcdev->clk_emma);
> - clk_put(pcdev->clk_emma);
> + clk_disable_unprepare(pcdev->clk_emma_ipg);
> + clk_disable_unprepare(pcdev->clk_emma_ahb);
The clk_disable_unprepare is inside a cpu_is_mx27() which seems correct.
Shouldn't the corresponding clk_get be in cpu_is_mx27() aswell?
Sascha
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