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

From: Thierry Escande
Date: Fri Jun 02 2017 - 12:03:44 EST


From: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>

This patch resets the encoding and decoding register bits before doing a
soft reset.

Signed-off-by: Tony K Nadackal <tony.kn@xxxxxxxxxxx>
Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxxxxx>
---
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);
+
+ reg = readl(base + EXYNOS4_JPEG_CNTL_REG);
writel(reg & ~EXYNOS4_SOFT_RESET_HI, base + EXYNOS4_JPEG_CNTL_REG);

udelay(100);
--
2.7.4