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From:   Neil Armstrong <narmstrong@baylibre.com>
To:     dri-devel@lists.freedesktop.org
Cc:     Neil Armstrong <narmstrong@baylibre.com>,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 07/11] drm/meson: Add G12A support for plane handling in CRTC driver
Date:   Mon, 25 Mar 2019 15:18:20 +0100
Message-Id: <20190325141824.21259-8-narmstrong@baylibre.com>
In-Reply-To: <20190325141824.21259-1-narmstrong@baylibre.com>
References: <20190325141824.21259-1-narmstrong@baylibre.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This patch adds support for the new OSD+VD Plane blending module
in the CRTC code by adding the G12A code to manage the blending
module and setting the right OSD1 & VD1 plane registers.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
---
 drivers/gpu/drm/meson/meson_crtc.c | 269 +++++++++++++++++++++++------
 drivers/gpu/drm/meson/meson_drv.h  |   4 +
 2 files changed, 221 insertions(+), 52 deletions(-)

diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
index 6d9311e254ef..5579f8ac3e3f 100644
--- a/drivers/gpu/drm/meson/meson_crtc.c
+++ b/drivers/gpu/drm/meson/meson_crtc.c
@@ -39,12 +39,17 @@
 #include "meson_viu.h"
 #include "meson_registers.h"
 
+#define MESON_G12A_VIU_OFFSET	0x5ec0
+
 /* CRTC definition */
 
 struct meson_crtc {
 	struct drm_crtc base;
 	struct drm_pending_vblank_event *event;
 	struct meson_drm *priv;
+	void (*enable_osd1)(struct meson_drm *priv);
+	void (*enable_vd1)(struct meson_drm *priv);
+	unsigned int viu_offset;
 };
 #define to_meson_crtc(x) container_of(x, struct meson_crtc, base)
 
@@ -80,6 +85,44 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
 
 };
 
+static void meson_g12a_crtc_atomic_enable(struct drm_crtc *crtc,
+					  struct drm_crtc_state *old_state)
+{
+	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
+	struct drm_crtc_state *crtc_state = crtc->state;
+	struct meson_drm *priv = meson_crtc->priv;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	if (!crtc_state) {
+		DRM_ERROR("Invalid crtc_state\n");
+		return;
+	}
+
+	/* VD1 Preblend vertical start/end */
+	writel(FIELD_PREP(GENMASK(11, 0), 2303),
+	       priv->io_base + _REG(VPP_PREBLEND_VD1_V_START_END));
+
+	/* Setup Blender */
+	writel(crtc_state->mode.hdisplay |
+	       crtc_state->mode.vdisplay << 16,
+	       priv->io_base + _REG(VPP_POSTBLEND_H_SIZE));
+
+	writel_relaxed(0 << 16 |
+			(crtc_state->mode.hdisplay - 1),
+			priv->io_base + _REG(VPP_OSD1_BLD_H_SCOPE));
+	writel_relaxed(0 << 16 |
+			(crtc_state->mode.vdisplay - 1),
+			priv->io_base + _REG(VPP_OSD1_BLD_V_SCOPE));
+	writel_relaxed(crtc_state->mode.hdisplay << 16 |
+			crtc_state->mode.vdisplay,
+			priv->io_base + _REG(VPP_OUT_H_V_SIZE));
+
+	drm_crtc_vblank_on(crtc);
+
+	priv->viu.osd1_enabled = true;
+}
+
 static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
 				     struct drm_crtc_state *old_state)
 {
@@ -110,6 +153,31 @@ static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
 	priv->viu.osd1_enabled = true;
 }
 
+static void meson_g12a_crtc_atomic_disable(struct drm_crtc *crtc,
+					   struct drm_crtc_state *old_state)
+{
+	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
+	struct meson_drm *priv = meson_crtc->priv;
+
+	DRM_DEBUG_DRIVER("\n");
+
+	drm_crtc_vblank_off(crtc);
+
+	priv->viu.osd1_enabled = false;
+	priv->viu.osd1_commit = false;
+
+	priv->viu.vd1_enabled = false;
+	priv->viu.vd1_commit = false;
+
+	if (crtc->state->event && !crtc->state->active) {
+		spin_lock_irq(&crtc->dev->event_lock);
+		drm_crtc_send_vblank_event(crtc, crtc->state->event);
+		spin_unlock_irq(&crtc->dev->event_lock);
+
+		crtc->state->event = NULL;
+	}
+}
+
 static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
 				      struct drm_crtc_state *old_state)
 {
@@ -173,6 +241,53 @@ static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = {
 	.atomic_disable	= meson_crtc_atomic_disable,
 };
 
+static const struct drm_crtc_helper_funcs meson_g12a_crtc_helper_funcs = {
+	.atomic_begin	= meson_crtc_atomic_begin,
+	.atomic_flush	= meson_crtc_atomic_flush,
+	.atomic_enable	= meson_g12a_crtc_atomic_enable,
+	.atomic_disable	= meson_g12a_crtc_atomic_disable,
+};
+
+static void meson_crtc_enable_osd1(struct meson_drm *priv)
+{
+	writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND,
+			    priv->io_base + _REG(VPP_MISC));
+}
+
+static void meson_g12a_crtc_enable_osd1(struct meson_drm *priv)
+{
+	writel_relaxed(priv->viu.osd_blend_din0_scope_h,
+		       priv->io_base +
+		       _REG(VIU_OSD_BLEND_DIN0_SCOPE_H));
+	writel_relaxed(priv->viu.osd_blend_din0_scope_v,
+		       priv->io_base +
+		       _REG(VIU_OSD_BLEND_DIN0_SCOPE_V));
+	writel_relaxed(priv->viu.osb_blend0_size,
+		       priv->io_base +
+		       _REG(VIU_OSD_BLEND_BLEND0_SIZE));
+	writel_relaxed(priv->viu.osb_blend1_size,
+		       priv->io_base +
+		       _REG(VIU_OSD_BLEND_BLEND1_SIZE));
+}
+
+static void meson_crtc_enable_vd1(struct meson_drm *priv)
+{
+	writel_bits_relaxed(VPP_VD1_PREBLEND | VPP_VD1_POSTBLEND |
+			    VPP_COLOR_MNG_ENABLE,
+			    VPP_VD1_PREBLEND | VPP_VD1_POSTBLEND |
+			    VPP_COLOR_MNG_ENABLE,
+			    priv->io_base + _REG(VPP_MISC));
+}
+
+static void meson_g12a_crtc_enable_vd1(struct meson_drm *priv)
+{
+	writel_relaxed(((1 << 16) | /* post bld premult*/
+			(1 << 8) | /* post src */
+			(1 << 4) | /* pre bld premult*/
+			(1 << 0)),
+			priv->io_base + _REG(VD1_BLEND_SRC_CTRL));
+}
+
 void meson_crtc_irq(struct meson_drm *priv)
 {
 	struct meson_crtc *meson_crtc = to_meson_crtc(priv->crtc);
@@ -219,8 +334,8 @@ void meson_crtc_irq(struct meson_drm *priv)
 				MESON_CANVAS_BLKMODE_LINEAR, 0);
 
 		/* Enable OSD1 */
-		writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND,
-				    priv->io_base + _REG(VPP_MISC));
+		if (meson_crtc->enable_osd1)
+			meson_crtc->enable_osd1(priv);
 
 		priv->viu.osd1_commit = false;
 	}
@@ -261,89 +376,133 @@ void meson_crtc_irq(struct meson_drm *priv)
 		};
 
 		writel_relaxed(priv->viu.vd1_if0_gen_reg,
-				priv->io_base + _REG(VD1_IF0_GEN_REG));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_GEN_REG));
 		writel_relaxed(priv->viu.vd1_if0_gen_reg,
-				priv->io_base + _REG(VD2_IF0_GEN_REG));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_GEN_REG));
 		writel_relaxed(priv->viu.vd1_if0_gen_reg2,
-				priv->io_base + _REG(VD1_IF0_GEN_REG2));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_GEN_REG2));
 		writel_relaxed(priv->viu.viu_vd1_fmt_ctrl,
-				priv->io_base + _REG(VIU_VD1_FMT_CTRL));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VIU_VD1_FMT_CTRL));
 		writel_relaxed(priv->viu.viu_vd1_fmt_ctrl,
-				priv->io_base + _REG(VIU_VD2_FMT_CTRL));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VIU_VD2_FMT_CTRL));
 		writel_relaxed(priv->viu.viu_vd1_fmt_w,
-				priv->io_base + _REG(VIU_VD1_FMT_W));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VIU_VD1_FMT_W));
 		writel_relaxed(priv->viu.viu_vd1_fmt_w,
-				priv->io_base + _REG(VIU_VD2_FMT_W));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VIU_VD2_FMT_W));
 		writel_relaxed(priv->viu.vd1_if0_canvas0,
-				priv->io_base + _REG(VD1_IF0_CANVAS0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CANVAS0));
 		writel_relaxed(priv->viu.vd1_if0_canvas0,
-				priv->io_base + _REG(VD1_IF0_CANVAS1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CANVAS1));
 		writel_relaxed(priv->viu.vd1_if0_canvas0,
-				priv->io_base + _REG(VD2_IF0_CANVAS0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CANVAS0));
 		writel_relaxed(priv->viu.vd1_if0_canvas0,
-				priv->io_base + _REG(VD2_IF0_CANVAS1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CANVAS1));
 		writel_relaxed(priv->viu.vd1_if0_luma_x0,
-				priv->io_base + _REG(VD1_IF0_LUMA_X0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA_X0));
 		writel_relaxed(priv->viu.vd1_if0_luma_x0,
-				priv->io_base + _REG(VD1_IF0_LUMA_X1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA_X1));
 		writel_relaxed(priv->viu.vd1_if0_luma_x0,
-				priv->io_base + _REG(VD2_IF0_LUMA_X0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA_X0));
 		writel_relaxed(priv->viu.vd1_if0_luma_x0,
-				priv->io_base + _REG(VD2_IF0_LUMA_X1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA_X1));
 		writel_relaxed(priv->viu.vd1_if0_luma_y0,
-				priv->io_base + _REG(VD1_IF0_LUMA_Y0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA_Y0));
 		writel_relaxed(priv->viu.vd1_if0_luma_y0,
-				priv->io_base + _REG(VD1_IF0_LUMA_Y1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA_Y1));
 		writel_relaxed(priv->viu.vd1_if0_luma_y0,
-				priv->io_base + _REG(VD2_IF0_LUMA_Y0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA_Y0));
 		writel_relaxed(priv->viu.vd1_if0_luma_y0,
-				priv->io_base + _REG(VD2_IF0_LUMA_Y1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA_Y1));
 		writel_relaxed(priv->viu.vd1_if0_chroma_x0,
-				priv->io_base + _REG(VD1_IF0_CHROMA_X0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA_X0));
 		writel_relaxed(priv->viu.vd1_if0_chroma_x0,
-				priv->io_base + _REG(VD1_IF0_CHROMA_X1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA_X1));
 		writel_relaxed(priv->viu.vd1_if0_chroma_x0,
-				priv->io_base + _REG(VD2_IF0_CHROMA_X0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA_X0));
 		writel_relaxed(priv->viu.vd1_if0_chroma_x0,
-				priv->io_base + _REG(VD2_IF0_CHROMA_X1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA_X1));
 		writel_relaxed(priv->viu.vd1_if0_chroma_y0,
-				priv->io_base + _REG(VD1_IF0_CHROMA_Y0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA_Y0));
 		writel_relaxed(priv->viu.vd1_if0_chroma_y0,
-				priv->io_base + _REG(VD1_IF0_CHROMA_Y1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA_Y1));
 		writel_relaxed(priv->viu.vd1_if0_chroma_y0,
-				priv->io_base + _REG(VD2_IF0_CHROMA_Y0));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA_Y0));
 		writel_relaxed(priv->viu.vd1_if0_chroma_y0,
-				priv->io_base + _REG(VD2_IF0_CHROMA_Y1));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA_Y1));
 		writel_relaxed(priv->viu.vd1_if0_repeat_loop,
-				priv->io_base + _REG(VD1_IF0_RPT_LOOP));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_RPT_LOOP));
 		writel_relaxed(priv->viu.vd1_if0_repeat_loop,
-				priv->io_base + _REG(VD2_IF0_RPT_LOOP));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_RPT_LOOP));
 		writel_relaxed(priv->viu.vd1_if0_luma0_rpt_pat,
-				priv->io_base + _REG(VD1_IF0_LUMA0_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA0_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_luma0_rpt_pat,
-				priv->io_base + _REG(VD2_IF0_LUMA0_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA0_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_luma0_rpt_pat,
-				priv->io_base + _REG(VD1_IF0_LUMA1_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA1_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_luma0_rpt_pat,
-				priv->io_base + _REG(VD2_IF0_LUMA1_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA1_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_chroma0_rpt_pat,
-				priv->io_base + _REG(VD1_IF0_CHROMA0_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA0_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_chroma0_rpt_pat,
-				priv->io_base + _REG(VD2_IF0_CHROMA0_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA0_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_chroma0_rpt_pat,
-				priv->io_base + _REG(VD1_IF0_CHROMA1_RPT_PAT));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA1_RPT_PAT));
 		writel_relaxed(priv->viu.vd1_if0_chroma0_rpt_pat,
-				priv->io_base + _REG(VD2_IF0_CHROMA1_RPT_PAT));
-		writel_relaxed(0, priv->io_base + _REG(VD1_IF0_LUMA_PSEL));
-		writel_relaxed(0, priv->io_base + _REG(VD1_IF0_CHROMA_PSEL));
-		writel_relaxed(0, priv->io_base + _REG(VD2_IF0_LUMA_PSEL));
-		writel_relaxed(0, priv->io_base + _REG(VD2_IF0_CHROMA_PSEL));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA1_RPT_PAT));
+		writel_relaxed(0, priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_LUMA_PSEL));
+		writel_relaxed(0, priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_CHROMA_PSEL));
+		writel_relaxed(0, priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_LUMA_PSEL));
+		writel_relaxed(0, priv->io_base + meson_crtc->viu_offset +
+				_REG(VD2_IF0_CHROMA_PSEL));
 		writel_relaxed(priv->viu.vd1_range_map_y,
-				priv->io_base + _REG(VD1_IF0_RANGE_MAP_Y));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_RANGE_MAP_Y));
 		writel_relaxed(priv->viu.vd1_range_map_cb,
-				priv->io_base + _REG(VD1_IF0_RANGE_MAP_CB));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_RANGE_MAP_CB));
 		writel_relaxed(priv->viu.vd1_range_map_cr,
-				priv->io_base + _REG(VD1_IF0_RANGE_MAP_CR));
+				priv->io_base + meson_crtc->viu_offset +
+				_REG(VD1_IF0_RANGE_MAP_CR));
 		writel_relaxed(0x78404,
 				priv->io_base + _REG(VPP_SC_MISC));
 		writel_relaxed(priv->viu.vpp_pic_in_height,
@@ -389,11 +548,8 @@ void meson_crtc_irq(struct meson_drm *priv)
 		writel_relaxed(0x42, priv->io_base + _REG(VPP_SCALE_COEF_IDX));
 
 		/* Enable VD1 */
-		writel_bits_relaxed(VPP_VD1_PREBLEND | VPP_VD1_POSTBLEND |
-				    VPP_COLOR_MNG_ENABLE,
-				    VPP_VD1_PREBLEND | VPP_VD1_POSTBLEND |
-				    VPP_COLOR_MNG_ENABLE,
-				    priv->io_base + _REG(VPP_MISC));
+		if (meson_crtc->enable_vd1)
+			meson_crtc->enable_vd1(priv);
 
 		priv->viu.vd1_commit = false;
 	}
@@ -430,7 +586,16 @@ int meson_crtc_create(struct meson_drm *priv)
 		return ret;
 	}
 
-	drm_crtc_helper_add(crtc, &meson_crtc_helper_funcs);
+	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+		meson_crtc->enable_osd1 = meson_g12a_crtc_enable_osd1;
+		meson_crtc->enable_vd1 = meson_g12a_crtc_enable_vd1;
+		meson_crtc->viu_offset = MESON_G12A_VIU_OFFSET;
+		drm_crtc_helper_add(crtc, &meson_g12a_crtc_helper_funcs);
+	} else {
+		meson_crtc->enable_osd1 = meson_crtc_enable_osd1;
+		meson_crtc->enable_vd1 = meson_crtc_enable_vd1;
+		drm_crtc_helper_add(crtc, &meson_crtc_helper_funcs);
+	}
 
 	priv->crtc = crtc;
 
diff --git a/drivers/gpu/drm/meson/meson_drv.h b/drivers/gpu/drm/meson/meson_drv.h
index 214a7cb18ce2..9614baa836b9 100644
--- a/drivers/gpu/drm/meson/meson_drv.h
+++ b/drivers/gpu/drm/meson/meson_drv.h
@@ -62,6 +62,10 @@ struct meson_drm {
 		uint32_t osd_sc_h_phase_step;
 		uint32_t osd_sc_h_ctrl0;
 		uint32_t osd_sc_v_ctrl0;
+		uint32_t osd_blend_din0_scope_h;
+		uint32_t osd_blend_din0_scope_v;
+		uint32_t osb_blend0_size;
+		uint32_t osb_blend1_size;
 
 		bool vd1_enabled;
 		bool vd1_commit;
-- 
2.21.0