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From:   Manikandan Muralidharan <manikandan.m@microchip.com>
To:     <sam@ravnborg.org>, <bbrezillon@kernel.org>, <airlied@gmail.com>,
        <daniel@ffwll.ch>, <nicolas.ferre@microchip.com>,
        <alexandre.belloni@bootlin.com>, <lee@kernel.org>,
        <dri-devel@lists.freedesktop.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
CC:     <Hari.PrasathGE@microchip.com>,
        <Balamanikandan.Gunasundar@microchip.com>,
        <Durai.ManickamKR@microchip.com>, <Nayabbasha.Sayed@microchip.com>,
        <Dharma.B@microchip.com>, <Varshini.Rajendran@microchip.com>,
        <Balakrishnan.S@microchip.com>,
        Manikandan Muralidharan <manikandan.m@microchip.com>
Subject: [PATCH v6 1/7] drm: atmel-hlcdc: add flag and driver ops to differentiate XLCDC and HLCDC IP
Date:   Wed, 27 Sep 2023 15:17:26 +0530
Message-ID: <20230927094732.490228-2-manikandan.m@microchip.com>
In-Reply-To: <20230927094732.490228-1-manikandan.m@microchip.com>
References: <20230927094732.490228-1-manikandan.m@microchip.com>
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Add is_xlcdc flag and LCD IP specific ops in driver data to differentiate
XLCDC and HLCDC code within the atmel-hlcdc driver files.

Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
---
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 68 ++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
index 5b5c774e0edf..c61fa1733da4 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h
@@ -177,6 +177,9 @@ struct atmel_hlcdc_layer_cfg_layout {
 	int csc;
 };
 
+struct atmel_hlcdc_plane_state;
+struct atmel_lcdc_dc_ops;
+
 /**
  * Atmel HLCDC DMA descriptor structure
  *
@@ -304,8 +307,10 @@ atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *layer)
  * @conflicting_output_formats: true if RGBXXX output formats conflict with
  *				each other.
  * @fixed_clksrc: true if clock source is fixed
+ * @is_xlcdc: true if XLCDC IP is supported
  * @layers: a layer description table describing available layers
  * @nlayers: layer description table size
+ * @ops: atmel lcdc dc ops
  */
 struct atmel_hlcdc_dc_desc {
 	int min_width;
@@ -317,8 +322,10 @@ struct atmel_hlcdc_dc_desc {
 	int max_hpw;
 	bool conflicting_output_formats;
 	bool fixed_clksrc;
+	bool is_xlcdc;
 	const struct atmel_hlcdc_layer_desc *layers;
 	int nlayers;
+	const struct atmel_lcdc_dc_ops *ops;
 };
 
 /**
@@ -345,6 +352,67 @@ struct atmel_hlcdc_dc {
 	} suspend;
 };
 
+/**
+ * struct atmel_lcdc_dc_ops - describes atmel_lcdc ops group
+ * to differentiate HLCDC and XLCDC IP code support.
+ * @plane_setup_scaler: update the vertical and horizontal scaling factors
+ * @update_lcdc_buffers: update the each LCDC layers DMA registers.
+ * @lcdc_atomic_disable: disable LCDC interrupts and layers
+ * @lcdc_update_general_settings: update each LCDC layers general
+ * confiugration register.
+ * @lcdc_atomic_update: enable the LCDC layers and interrupts.
+ * @lcdc_csc_init: update the color space conversion co-efficient of
+ * High-end overlay register.
+ * @lcdc_irq_dbg: to raise alert incase of interrupt overrun in any LCDC layer.
+ */
+struct atmel_lcdc_dc_ops {
+	void (*plane_setup_scaler)(struct atmel_hlcdc_plane *plane,
+				   struct atmel_hlcdc_plane_state *state);
+	void (*update_lcdc_buffers)(struct atmel_hlcdc_plane *plane,
+				    struct atmel_hlcdc_plane_state *state,
+				    u32 sr, int i);
+	void (*lcdc_atomic_disable)(struct atmel_hlcdc_plane *plane);
+	void (*lcdc_update_general_settings)(struct atmel_hlcdc_plane *plane,
+					     struct atmel_hlcdc_plane_state *state);
+	void (*lcdc_atomic_update)(struct atmel_hlcdc_plane *plane,
+				   struct atmel_hlcdc_dc *dc);
+	void (*lcdc_csc_init)(struct atmel_hlcdc_plane *plane,
+			      const struct atmel_hlcdc_layer_desc *desc);
+	void (*lcdc_irq_dbg)(struct atmel_hlcdc_plane *plane,
+			     const struct atmel_hlcdc_layer_desc *desc);
+};
+
+void atmel_hlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane,
+				    struct atmel_hlcdc_plane_state *state);
+void atmel_xlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane,
+				    struct atmel_hlcdc_plane_state *state);
+void update_hlcdc_buffers(struct atmel_hlcdc_plane *plane,
+			  struct atmel_hlcdc_plane_state *state,
+			  u32 sr, int i);
+void update_xlcdc_buffers(struct atmel_hlcdc_plane *plane,
+			  struct atmel_hlcdc_plane_state *state,
+			  u32 sr, int i);
+void hlcdc_atomic_disable(struct atmel_hlcdc_plane *plane);
+void xlcdc_atomic_disable(struct atmel_hlcdc_plane *plane);
+void
+atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
+					  struct atmel_hlcdc_plane_state *state);
+void
+atmel_xlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
+					  struct atmel_hlcdc_plane_state *state);
+void hlcdc_atomic_update(struct atmel_hlcdc_plane *plane,
+			 struct atmel_hlcdc_dc *dc);
+void xlcdc_atomic_update(struct atmel_hlcdc_plane *plane,
+			 struct atmel_hlcdc_dc *dc);
+void hlcdc_csc_init(struct atmel_hlcdc_plane *plane,
+		    const struct atmel_hlcdc_layer_desc *desc);
+void xlcdc_csc_init(struct atmel_hlcdc_plane *plane,
+		    const struct atmel_hlcdc_layer_desc *desc);
+void hlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
+		   const struct atmel_hlcdc_layer_desc *desc);
+void xlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
+		   const struct atmel_hlcdc_layer_desc *desc);
+
 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
 
-- 
2.25.1