drm/meson: Add G12A Support for VIU setup

Amlogic G12A SoC needs a different VIU setup code,
handle it.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190325141824.21259-5-narmstrong@baylibre.com

drivers/gpu/drm/meson/meson_viu.c

@@ -90,6 +90,34 @@ static int eotf_bypass_coeff[EOTF_COEFF_SIZE] = {
 	EOTF_COEFF_RIGHTSHIFT /* right shift */
 };
 
+void meson_viu_set_g12a_osd1_matrix(struct meson_drm *priv, int *m,
+				   bool csc_on)
+{
+	/* VPP WRAP OSD1 matrix */
+	writel(((m[0] & 0xfff) << 16) | (m[1] & 0xfff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_PRE_OFFSET0_1));
+	writel(m[2] & 0xfff,
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_PRE_OFFSET2));
+	writel(((m[3] & 0x1fff) << 16) | (m[4] & 0x1fff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF00_01));
+	writel(((m[5] & 0x1fff) << 16) | (m[6] & 0x1fff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF02_10));
+	writel(((m[7] & 0x1fff) << 16) | (m[8] & 0x1fff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF11_12));
+	writel(((m[9] & 0x1fff) << 16) | (m[10] & 0x1fff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF20_21));
+	writel((m[11] & 0x1fff) << 16,
+		priv->io_base +	_REG(VPP_WRAP_OSD1_MATRIX_COEF22));
+
+	writel(((m[18] & 0xfff) << 16) | (m[19] & 0xfff),
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_OFFSET0_1));
+	writel(m[20] & 0xfff,
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_OFFSET2));
+
+	writel_bits_relaxed(BIT(0), csc_on ? BIT(0) : 0,
+		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
+}
+
 void meson_viu_set_osd_matrix(struct meson_drm *priv,
 			      enum viu_matrix_sel_e m_select,
 			      int *m, bool csc_on)
@@ -336,11 +364,21 @@ void meson_viu_init(struct meson_drm *priv)
 	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
 	    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
 		meson_viu_load_matrix(priv);
+	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+		meson_viu_set_g12a_osd1_matrix(priv, RGB709_to_YUV709l_coeff,
+					       true);
 
 	/* Initialize OSD1 fifo control register */
 	reg = BIT(0) |	/* Urgent DDR request priority */
-	      (4 << 5) | /* hold_fifo_lines */
-	      (3 << 10) | /* burst length 64 */
+	      (4 << 5); /* hold_fifo_lines */
+	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+		reg |= (1 << 10) | /* burst length 32 */
+		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
+		       (2 << 22) | /* 4 words in 1 burst */
+		       (2 << 24) |
+		       (1 << 31);
+	else
+		reg |= (3 << 10) | /* burst length 64 */
 		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
 		       (2 << 22) | /* 4 words in 1 burst */
 		       (2 << 24);
@@ -369,6 +407,30 @@ void meson_viu_init(struct meson_drm *priv)
 	writel_relaxed(0x00FF00C0,
 			priv->io_base + _REG(VD2_IF0_LUMA_FIFO_SIZE));
 
+	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+		writel_relaxed(4 << 29 |
+				1 << 27 |
+				1 << 26 | /* blend_din0 input to blend0 */
+				1 << 25 | /* blend1_dout to blend2 */
+				1 << 24 | /* blend1_din3 input to blend1 */
+				1 << 20 |
+				0 << 16 |
+				1,
+				priv->io_base + _REG(VIU_OSD_BLEND_CTRL));
+		writel_relaxed(3 << 8 |
+				1 << 20,
+				priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
+		writel_relaxed(1 << 20,
+				priv->io_base + _REG(OSD2_BLEND_SRC_CTRL));
+		writel_relaxed(0, priv->io_base + _REG(VD1_BLEND_SRC_CTRL));
+		writel_relaxed(0, priv->io_base + _REG(VD2_BLEND_SRC_CTRL));
+		writel_relaxed(0,
+				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_DATA0));
+		writel_relaxed(0,
+				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_ALPHA));
+		writel_bits_relaxed(0x3 << 2, 0x3 << 2,
+				priv->io_base + _REG(DOLBY_PATH_CTRL));
+	}
 
 	priv->viu.osd1_enabled = false;
 	priv->viu.osd1_commit = false;