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Re: [PATCH 1/9] [media] s5p-jpeg: Reset the Codec before doing a soft reset

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Hi Thierry,

On 06/02/2017 06:02 PM, Thierry Escande wrote:
> From: Abhilash Kesavan <a.kesavan@samsung.com>
> 
> This patch resets the encoding and decoding register bits before doing a
> soft reset.
> 
> Signed-off-by: Tony K Nadackal <tony.kn@samsung.com>
> Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
> ---
>  drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c
> index a1d823a..9ad8f6d 100644
> --- a/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c
> +++ b/drivers/media/platform/s5p-jpeg/jpeg-hw-exynos4.c
> @@ -21,6 +21,10 @@ void exynos4_jpeg_sw_reset(void __iomem *base)
>  	unsigned int reg;
>  
>  	reg = readl(base + EXYNOS4_JPEG_CNTL_REG);
> +	writel(reg & ~(EXYNOS4_DEC_MODE | EXYNOS4_ENC_MODE),
> +	       base + EXYNOS4_JPEG_CNTL_REG);

Why is it required? It would be nice if commit message explained that.

> +	reg = readl(base + EXYNOS4_JPEG_CNTL_REG);
>  	writel(reg & ~EXYNOS4_SOFT_RESET_HI, base + EXYNOS4_JPEG_CNTL_REG);
>  
>  	udelay(100);
> 

-- 
Best regards,
Jacek Anaszewski

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Thread

[PATCH 0/9] [media] s5p-jpeg: Various fixes and improvements Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
  [PATCH 5/9] [media] s5p-jpeg: Add IOMMU support Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 5/9] [media] s5p-jpeg: Add IOMMU support Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-02 23:50 +0200
    Re: [PATCH 5/9] [media] s5p-jpeg: Add IOMMU support Shuah Khan <shuahkhan@gmail.com> - 2017-06-03 02:50 +0200
    Re: [PATCH 5/9] [media] s5p-jpeg: Add IOMMU support Sylwester Nawrocki <s.nawrocki@samsung.com> - 2017-06-05 13:40 +0200
  [PATCH 2/9] [media] s5p-jpeg: Call jpeg_bound_align_image after qbuf Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 2/9] [media] s5p-jpeg: Call jpeg_bound_align_image after  qbuf Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-02 23:30 +0200
  [PATCH 7/9] [media] s5p-jpeg: Change sclk_jpeg to 166MHz for Exynos5250 Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 7/9] [media] s5p-jpeg: Change sclk_jpeg to 166MHz for  Exynos5250 Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-03 00:00 +0200
      Re: [PATCH 7/9] [media] s5p-jpeg: Change sclk_jpeg to 166MHz for  Exynos5250 Sylwester Nawrocki <s.nawrocki@samsung.com> - 2017-06-05 12:30 +0200
  [PATCH 1/9] [media] s5p-jpeg: Reset the Codec before doing a soft reset Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 1/9] [media] s5p-jpeg: Reset the Codec before doing a soft  reset Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-02 22:00 +0200
      Re: [PATCH 1/9] [media] s5p-jpeg: Reset the Codec before doing a soft  reset Thierry Escande <thierry.escande@collabora.com> - 2017-06-07 14:40 +0200
  [PATCH 4/9] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling format Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 4/9] [media] s5p-jpeg: Decode 4:1:1 chroma subsampling  format Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-02 23:40 +0200
  [PATCH 3/9] [media] s5p-jpeg: Correct WARN_ON statement for checking subsampling Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
  [PATCH 9/9] [media] s5p-jpeg: Add support for multi-planar APIs Thierry Escande <thierry.escande@collabora.com> - 2017-06-02 18:10 +0200
    Re: [PATCH 9/9] [media] s5p-jpeg: Add support for multi-planar APIs Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-06-03 00:10 +0200

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