[PATCH] [media] exynos-gsc: Adding tiled multi-planar format to G-Scaler

[Shaik Ameer Basha]

Adding V4L2_PIX_FMT_NV12MT_16X16 to G-Scaler supported formats.
If the output or input format is V4L2_PIX_FMT_NV12MT_16X16, configure
G-Scaler to use GSC_IN_TILE_MODE.

Signed-off-by: Shaik Ameer Basha <shaik.am...@samsung.com>
---
 drivers/media/platform/exynos-gsc/gsc-core.c |    9 +++++++++
 drivers/media/platform/exynos-gsc/gsc-core.h |    5 +++++
 drivers/media/platform/exynos-gsc/gsc-regs.c |    6 ++++++
 3 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c 
b/drivers/media/platform/exynos-gsc/gsc-core.c
index cc7b218..00f1013 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -185,6 +185,15 @@ static const struct gsc_fmt gsc_formats[] = {
                .corder         = GSC_CRCB,
                .num_planes     = 3,
                .num_comp       = 3,
+       }, {
+               .name           = "YUV 4:2:0 non-contig. 2p, Y/CbCr, tiled",
+               .pixelformat    = V4L2_PIX_FMT_NV12MT_16X16,
+               .depth          = { 8, 4 },
+               .color          = GSC_YUV420,
+               .yorder         = GSC_LSB_Y,
+               .corder         = GSC_CBCR,
+               .num_planes     = 2,
+               .num_comp       = 2,
        }
 };
 
diff --git a/drivers/media/platform/exynos-gsc/gsc-core.h 
b/drivers/media/platform/exynos-gsc/gsc-core.h
index 5f157ef..cc19bba 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.h
+++ b/drivers/media/platform/exynos-gsc/gsc-core.h
@@ -427,6 +427,11 @@ static inline void gsc_ctx_state_lock_clear(u32 state, 
struct gsc_ctx *ctx)
        spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
 }
 
+static inline int is_tiled(const struct gsc_fmt *fmt)
+{
+       return fmt->pixelformat == V4L2_PIX_FMT_NV12MT_16X16;
+}
+
 static inline void gsc_hw_enable_control(struct gsc_dev *dev, bool on)
 {
        u32 cfg = readl(dev->regs + GSC_ENABLE);
diff --git a/drivers/media/platform/exynos-gsc/gsc-regs.c 
b/drivers/media/platform/exynos-gsc/gsc-regs.c
index 0146b35..6f5b5a4 100644
--- a/drivers/media/platform/exynos-gsc/gsc-regs.c
+++ b/drivers/media/platform/exynos-gsc/gsc-regs.c
@@ -214,6 +214,9 @@ void gsc_hw_set_in_image_format(struct gsc_ctx *ctx)
                break;
        }
 
+       if (is_tiled(frame->fmt))
+               cfg |= GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE;
+
        writel(cfg, dev->regs + GSC_IN_CON);
 }
 
@@ -334,6 +337,9 @@ void gsc_hw_set_out_image_format(struct gsc_ctx *ctx)
                break;
        }
 
+       if (is_tiled(frame->fmt))
+               cfg |= GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE;
+
 end_set:
        writel(cfg, dev->regs + GSC_OUT_CON);
 }
-- 
1.7.0.4

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