[media] s5p-mfc: Add init buffer cmd to MFCV6

Latest MFC v6 firmware requires tile mode and loop filter
setting to be done as part of Init buffer command, in sync
with v7. This patch adds this support for new v6 firmware.

Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kiran AVND <avnd.kiran@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c

@@ -48,6 +48,8 @@
 #define WRITEL(data, reg) \
 	(WARN_ON_ONCE(!(reg)) ? 0 : writel((data), (reg)))
 
+#define IS_MFCV6_V2(dev) (!IS_MFCV7_PLUS(dev) && dev->fw_ver == MFC_FW_V2)
+
 /* Allocate temporary buffers for decoding */
 static int s5p_mfc_alloc_dec_temp_buffers_v6(struct s5p_mfc_ctx *ctx)
 {
@@ -1352,7 +1354,7 @@ static int s5p_mfc_init_decode_v6(struct s5p_mfc_ctx *ctx)
 		WRITEL(ctx->display_delay, mfc_regs->d_display_delay);
 	}
 
-	if (IS_MFCV7_PLUS(dev)) {
+	if (IS_MFCV7_PLUS(dev) || IS_MFCV6_V2(dev)) {
 		WRITEL(reg, mfc_regs->d_dec_options);
 		reg = 0;
 	}
@@ -1367,7 +1369,7 @@ static int s5p_mfc_init_decode_v6(struct s5p_mfc_ctx *ctx)
 	if (ctx->dst_fmt->fourcc == V4L2_PIX_FMT_NV12MT_16X16)
 		reg |= (0x1 << S5P_FIMV_D_OPT_TILE_MODE_SHIFT_V6);
 
-	if (IS_MFCV7_PLUS(dev))
+	if (IS_MFCV7_PLUS(dev) || IS_MFCV6_V2(dev))
 		WRITEL(reg, mfc_regs->d_init_buffer_options);
 	else
 		WRITEL(reg, mfc_regs->d_dec_options);