[media] gscaler: Add new driver for generic scaler
This patch adds support for G-Scaler (Generic Scaler) device which is a new device for scaling and color space conversion on EXYNOS5 SoCs. This patch adds the code for register definitions and register operations. This device supports the followings as key feature. 1) Input image format - RGB888/565, YUV422 1P/2P, YUV420 2P/3P, TILE 2) Output image format - RGB888/565, YUV422 1P/2P, YUV420 2P/3P, YUV444 3) Input rotation - 0/90/180/270 degree, X/Y Flip 4) Scale ratio - 1/16 scale down to 8 scale up 5) CSC - RGB to YUV / YUV to RGB 6) Size - 2048 x 2048 for tile or rotation - 4800 x 3344 other case Signed-off-by: NHynwoong Kim <khw0178.kim@samsung.com> Signed-off-by: NSungchun Kang <sungchun.kang@samsung.com> Signed-off-by: NShaik Ameer Basha <shaik.ameer@samsung.com> Reviewed-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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