[PATCH 01/13] dt-bindings: add binding for the Allwinner DE2 CCU

[PATCH 01/13] dt-bindings: add binding for the Allwinner DE2 CCU

[Icenowy Zheng]

Allwinner "Display Engine 2.0" contains some clock controls in it.

In order to add them as clock drivers, we need a device tree binding.
Add the binding here.

Also add the device tree binding headers.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/sun8i-de2.txt        | 30 ++++++++++++++++++++++
 include/dt-bindings/clock/sun8i-de2.h              | 18 +++++++++++++
 include/dt-bindings/reset/sun8i-de2.h              | 14 ++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sun8i-de2.txt
 create mode 100644 include/dt-bindings/clock/sun8i-de2.h
 create mode 100644 include/dt-bindings/reset/sun8i-de2.h

diff --git a/Documentation/devicetree/bindings/clock/sun8i-de2.txt b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
new file mode 100644
index 000000000000..d710c0111cd3
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
@@ -0,0 +1,30 @@
+Allwinner Display Engine 2.0 Clock Control Binding
+--------------------------------------------------
+
+Required properties :
+- compatible: must contain one of the following compatibles:
+		- "allwinner,sun8i-a83t-de2-clk"
+		- "allwinner,sun50i-h5-de2-clk"
+
+- reg: Must contain the registers base address and length
+- clocks: phandle to the clocks feeding the display engine subsystem.
+	  Three are needed:
+  - "mod": the display engine module clock
+  - "bus": the bus clock for the whole display engine subsystem
+- clock-names: Must contain the clock names described just above
+- resets: phandle to the reset control for the display engine subsystem.
+- #clock-cells : must contain 1
+- #reset-cells : must contain 1
+
+Example:
+de2_clocks: clock@1000000 {
+	compatible = "allwinner,sun8i-a83t-de2-clk";
+	reg = <0x01000000 0x100000>;
+	clocks = <&ccu CLK_DE>,
+		 <&ccu CLK_BUS_DE>;
+	clock-names = "mod",
+		      "bus";
+	resets = <&ccu RST_BUS_DE>;
+	#clock-cells = <1>;
+	#reset-cells = <1>;
+};
diff --git a/include/dt-bindings/clock/sun8i-de2.h b/include/dt-bindings/clock/sun8i-de2.h
new file mode 100644
index 000000000000..3bed63b524aa
--- /dev/null
+++ b/include/dt-bindings/clock/sun8i-de2.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_SUN8I_DE2_H_
+#define _DT_BINDINGS_CLOCK_SUN8I_DE2_H_
+
+#define CLK_BUS_MIXER0		0
+#define CLK_BUS_MIXER1		1
+#define CLK_BUS_WB		2
+
+#define CLK_MIXER0		6
+#define CLK_MIXER1		7
+#define CLK_WB			8
+
+#endif /* _DT_BINDINGS_CLOCK_SUN8I_DE2_H_ */
diff --git a/include/dt-bindings/reset/sun8i-de2.h b/include/dt-bindings/reset/sun8i-de2.h
new file mode 100644
index 000000000000..9526017432f0
--- /dev/null
+++ b/include/dt-bindings/reset/sun8i-de2.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+#ifndef _DT_BINDINGS_RESET_SUN8I_DE2_H_
+#define _DT_BINDINGS_RESET_SUN8I_DE2_H_
+
+#define RST_MIXER0	0
+#define RST_MIXER1	1
+#define RST_WB		2
+
+#endif /* _DT_BINDINGS_RESET_SUN8I_DE2_H_ */
-- 
2.12.2

[PATCH 01/13] dt-bindings: add binding for the Allwinner DE2 CCU

[Icenowy Zheng]

Allwinner "Display Engine 2.0" contains some clock controls in it.

In order to add them as clock drivers, we need a device tree binding.
Add the binding here.

Also add the device tree binding headers.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/sun8i-de2.txt        | 30 ++++++++++++++++++++++
 include/dt-bindings/clock/sun8i-de2.h              | 18 +++++++++++++
 include/dt-bindings/reset/sun8i-de2.h              | 14 ++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sun8i-de2.txt
 create mode 100644 include/dt-bindings/clock/sun8i-de2.h
 create mode 100644 include/dt-bindings/reset/sun8i-de2.h

diff --git a/Documentation/devicetree/bindings/clock/sun8i-de2.txt b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
new file mode 100644
index 000000000000..d710c0111cd3
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
@@ -0,0 +1,30 @@
+Allwinner Display Engine 2.0 Clock Control Binding
+--------------------------------------------------
+
+Required properties :
+- compatible: must contain one of the following compatibles:
+		- "allwinner,sun8i-a83t-de2-clk"
+		- "allwinner,sun50i-h5-de2-clk"
+
+- reg: Must contain the registers base address and length
+- clocks: phandle to the clocks feeding the display engine subsystem.
+	  Three are needed:
+  - "mod": the display engine module clock
+  - "bus": the bus clock for the whole display engine subsystem
+- clock-names: Must contain the clock names described just above
+- resets: phandle to the reset control for the display engine subsystem.
+- #clock-cells : must contain 1
+- #reset-cells : must contain 1
+
+Example:
+de2_clocks: clock at 1000000 {
+	compatible = "allwinner,sun8i-a83t-de2-clk";
+	reg = <0x01000000 0x100000>;
+	clocks = <&ccu CLK_DE>,
+		 <&ccu CLK_BUS_DE>;
+	clock-names = "mod",
+		      "bus";
+	resets = <&ccu RST_BUS_DE>;
+	#clock-cells = <1>;
+	#reset-cells = <1>;
+};
diff --git a/include/dt-bindings/clock/sun8i-de2.h b/include/dt-bindings/clock/sun8i-de2.h
new file mode 100644
index 000000000000..3bed63b524aa
--- /dev/null
+++ b/include/dt-bindings/clock/sun8i-de2.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+#ifndef _DT_BINDINGS_CLOCK_SUN8I_DE2_H_
+#define _DT_BINDINGS_CLOCK_SUN8I_DE2_H_
+
+#define CLK_BUS_MIXER0		0
+#define CLK_BUS_MIXER1		1
+#define CLK_BUS_WB		2
+
+#define CLK_MIXER0		6
+#define CLK_MIXER1		7
+#define CLK_WB			8
+
+#endif /* _DT_BINDINGS_CLOCK_SUN8I_DE2_H_ */
diff --git a/include/dt-bindings/reset/sun8i-de2.h b/include/dt-bindings/reset/sun8i-de2.h
new file mode 100644
index 000000000000..9526017432f0
--- /dev/null
+++ b/include/dt-bindings/reset/sun8i-de2.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ */
+
+#ifndef _DT_BINDINGS_RESET_SUN8I_DE2_H_
+#define _DT_BINDINGS_RESET_SUN8I_DE2_H_
+
+#define RST_MIXER0	0
+#define RST_MIXER1	1
+#define RST_WB		2
+
+#endif /* _DT_BINDINGS_RESET_SUN8I_DE2_H_ */
-- 
2.12.2

[PATCH 02/13] clk: sunxi-ng: add support for DE2 CCU

[Icenowy Zheng]

The "Display Engine 2.0" in Allwinner newer SoCs contains a clock
management unit for its subunits, like the DE CCU in A80.

Add a sunxi-ng style driver for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 drivers/clk/sunxi-ng/Kconfig         |   5 +
 drivers/clk/sunxi-ng/Makefile        |   1 +
 drivers/clk/sunxi-ng/ccu-sun8i-de2.c | 218 +++++++++++++++++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun8i-de2.h |  28 +++++
 4 files changed, 252 insertions(+)
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.h

diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 64088e599404..2e4d804fbf61 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -140,6 +140,11 @@ config SUN8I_V3S_CCU
 	default MACH_SUN8I
 	depends on MACH_SUN8I || COMPILE_TEST
 
+config SUN8I_DE2_CCU
+	bool "Support for the Allwinner SoCs DE2 CCU"
+	select SUNXI_CCU_DIV
+	select SUNXI_CCU_GATE
+
 config SUN9I_A80_CCU
 	bool "Support for the Allwinner A80 CCU"
 	select SUNXI_CCU_DIV
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 0ec02fe14c50..be616279450e 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_SUN8I_A23_CCU)	+= ccu-sun8i-a23.o
 obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
 obj-$(CONFIG_SUN8I_H3_CCU)	+= ccu-sun8i-h3.o
 obj-$(CONFIG_SUN8I_V3S_CCU)	+= ccu-sun8i-v3s.o
+obj-$(CONFIG_SUN8I_DE2_CCU)	+= ccu-sun8i-de2.o
 obj-$(CONFIG_SUN8I_R_CCU)	+= ccu-sun8i-r.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-de.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.c b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
new file mode 100644
index 000000000000..adb2c344692a
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "ccu_common.h"
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_reset.h"
+
+#include "ccu-sun8i-de2.h"
+
+static SUNXI_CCU_GATE(bus_mixer0_clk,	"bus-mixer0",	"bus-de",
+		      0x04, BIT(0), 0);
+static SUNXI_CCU_GATE(bus_mixer1_clk,	"bus-mixer1",	"bus-de",
+		      0x04, BIT(1), 0);
+static SUNXI_CCU_GATE(bus_wb_clk,	"bus-wb",	"bus-de",
+		      0x04, BIT(2), 0);
+
+static SUNXI_CCU_GATE(mixer0_clk,	"mixer0",	"mixer0-div",
+		      0x00, BIT(0), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(mixer1_clk,	"mixer1",	"mixer1-div",
+		      0x00, BIT(1), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(wb_clk,		"wb",		"wb-div",
+		      0x00, BIT(2), CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
+		   CLK_SET_RATE_PARENT);
+
+static struct ccu_common *sunxi_de2_clks[] = {
+	&mixer0_clk.common,
+	&mixer1_clk.common,
+	&wb_clk.common,
+
+	&bus_mixer0_clk.common,
+	&bus_mixer1_clk.common,
+	&bus_wb_clk.common,
+
+	&mixer0_div_clk.common,
+	&mixer1_div_clk.common,
+	&wb_div_clk.common,
+};
+
+static struct clk_hw_onecell_data sunxi_de2_hw_clks = {
+	.hws	= {
+		[CLK_MIXER0]		= &mixer0_clk.common.hw,
+		[CLK_MIXER1]		= &mixer1_clk.common.hw,
+		[CLK_WB]		= &wb_clk.common.hw,
+
+		[CLK_BUS_MIXER0]	= &bus_mixer0_clk.common.hw,
+		[CLK_BUS_MIXER1]	= &bus_mixer1_clk.common.hw,
+		[CLK_BUS_WB]		= &bus_wb_clk.common.hw,
+
+		[CLK_MIXER0_DIV]	= &mixer0_div_clk.common.hw,
+		[CLK_MIXER1_DIV]	= &mixer1_div_clk.common.hw,
+		[CLK_WB_DIV]		= &wb_div_clk.common.hw,
+	},
+	.num	= CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun8i_a83t_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	/*
+	 * For A83T, H3 and R40, mixer1 reset line is shared with wb, so
+	 * only RST_WB is exported here.
+	 */
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static struct ccu_reset_map sun50i_a64_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	[RST_MIXER1]	= { 0x08, BIT(1) },
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun8i_a83t_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun8i_a83t_de2_resets),
+};
+
+static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun50i_a64_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun50i_a64_de2_resets),
+};
+
+static int sunxi_de2_clk_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct clk *bus_clk, *mod_clk;
+	struct reset_control *rstc;
+	void __iomem *reg;
+	const struct sunxi_ccu_desc *ccu_desc;
+	int ret;
+
+	ccu_desc = of_device_get_match_data(&pdev->dev);
+	if (!ccu_desc)
+		return -EINVAL;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	bus_clk = devm_clk_get(&pdev->dev, "bus");
+	if (IS_ERR(bus_clk)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
+		return ret;
+	}
+
+	mod_clk = devm_clk_get(&pdev->dev, "mod");
+	if (IS_ERR(mod_clk)) {
+		ret = PTR_ERR(mod_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get mod clk: %d\n", ret);
+		return ret;
+	}
+
+	rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(rstc)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev,
+				"Couldn't get reset control: %d\n", ret);
+		return ret;
+	}
+
+	/* The clocks need to be enabled for us to access the registers */
+	ret = clk_prepare_enable(bus_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(mod_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable mod clk: %d\n", ret);
+		return ret;
+	}
+
+	/* The reset control needs to be asserted for the controls to work */
+	ret = reset_control_deassert(rstc);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"Couldn't deassert reset control: %d\n", ret);
+		goto err_disable_clk;
+	}
+
+	ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
+	if (ret)
+		goto err_assert_reset;
+
+	return 0;
+
+err_assert_reset:
+	reset_control_assert(rstc);
+err_disable_clk:
+	clk_disable_unprepare(bus_clk);
+	return ret;
+}
+
+static const struct of_device_id sunxi_de2_clk_ids[] = {
+	{
+		.compatible = "allwinner,sun8i-a83t-de2-clk",
+		.data = &sun8i_a83t_de2_clk_desc,
+	},
+	{
+		.compatible = "allwinner,sun50i-h5-de2-clk",
+		.data = &sun50i_a64_de2_clk_desc,
+	},
+	/*
+	 * The Allwinner A64 SoC needs some bit to be poke in syscon to make
+	 * DE2 really working.
+	 * So there's currently no A64 compatible here.
+	 * H5 shares the same reset line with A64, so here H5 is using the
+	 * clock description of A64.
+	 */
+	{ }
+};
+
+static struct platform_driver sunxi_de2_clk_driver = {
+	.probe	= sunxi_de2_clk_probe,
+	.driver	= {
+		.name	= "sunxi-de2-clks",
+		.of_match_table	= sunxi_de2_clk_ids,
+	},
+};
+builtin_platform_driver(sunxi_de2_clk_driver);
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.h b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
new file mode 100644
index 000000000000..530c006e0ae9
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CCU_SUN8I_DE2_H_
+#define _CCU_SUN8I_DE2_H_
+
+#include <dt-bindings/clock/sun8i-de2.h>
+#include <dt-bindings/reset/sun8i-de2.h>
+
+/* Intermediary clock dividers are not exported */
+#define CLK_MIXER0_DIV	3
+#define CLK_MIXER1_DIV	4
+#define CLK_WB_DIV	5
+
+#define CLK_NUMBER	(CLK_WB + 1)
+
+#endif /* _CCU_SUN8I_DE2_H_ */
-- 
2.12.2

[PATCH 02/13] clk: sunxi-ng: add support for DE2 CCU

[Icenowy Zheng]

The "Display Engine 2.0" in Allwinner newer SoCs contains a clock
management unit for its subunits, like the DE CCU in A80.

Add a sunxi-ng style driver for it.

Signed-off-by: Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
---
 drivers/clk/sunxi-ng/Kconfig         |   5 +
 drivers/clk/sunxi-ng/Makefile        |   1 +
 drivers/clk/sunxi-ng/ccu-sun8i-de2.c | 218 +++++++++++++++++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun8i-de2.h |  28 +++++
 4 files changed, 252 insertions(+)
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.h

diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 64088e599404..2e4d804fbf61 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -140,6 +140,11 @@ config SUN8I_V3S_CCU
 	default MACH_SUN8I
 	depends on MACH_SUN8I || COMPILE_TEST
 
+config SUN8I_DE2_CCU
+	bool "Support for the Allwinner SoCs DE2 CCU"
+	select SUNXI_CCU_DIV
+	select SUNXI_CCU_GATE
+
 config SUN9I_A80_CCU
 	bool "Support for the Allwinner A80 CCU"
 	select SUNXI_CCU_DIV
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 0ec02fe14c50..be616279450e 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_SUN8I_A23_CCU)	+= ccu-sun8i-a23.o
 obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
 obj-$(CONFIG_SUN8I_H3_CCU)	+= ccu-sun8i-h3.o
 obj-$(CONFIG_SUN8I_V3S_CCU)	+= ccu-sun8i-v3s.o
+obj-$(CONFIG_SUN8I_DE2_CCU)	+= ccu-sun8i-de2.o
 obj-$(CONFIG_SUN8I_R_CCU)	+= ccu-sun8i-r.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-de.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.c b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
new file mode 100644
index 000000000000..adb2c344692a
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2017 Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "ccu_common.h"
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_reset.h"
+
+#include "ccu-sun8i-de2.h"
+
+static SUNXI_CCU_GATE(bus_mixer0_clk,	"bus-mixer0",	"bus-de",
+		      0x04, BIT(0), 0);
+static SUNXI_CCU_GATE(bus_mixer1_clk,	"bus-mixer1",	"bus-de",
+		      0x04, BIT(1), 0);
+static SUNXI_CCU_GATE(bus_wb_clk,	"bus-wb",	"bus-de",
+		      0x04, BIT(2), 0);
+
+static SUNXI_CCU_GATE(mixer0_clk,	"mixer0",	"mixer0-div",
+		      0x00, BIT(0), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(mixer1_clk,	"mixer1",	"mixer1-div",
+		      0x00, BIT(1), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(wb_clk,		"wb",		"wb-div",
+		      0x00, BIT(2), CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
+		   CLK_SET_RATE_PARENT);
+
+static struct ccu_common *sunxi_de2_clks[] = {
+	&mixer0_clk.common,
+	&mixer1_clk.common,
+	&wb_clk.common,
+
+	&bus_mixer0_clk.common,
+	&bus_mixer1_clk.common,
+	&bus_wb_clk.common,
+
+	&mixer0_div_clk.common,
+	&mixer1_div_clk.common,
+	&wb_div_clk.common,
+};
+
+static struct clk_hw_onecell_data sunxi_de2_hw_clks = {
+	.hws	= {
+		[CLK_MIXER0]		= &mixer0_clk.common.hw,
+		[CLK_MIXER1]		= &mixer1_clk.common.hw,
+		[CLK_WB]		= &wb_clk.common.hw,
+
+		[CLK_BUS_MIXER0]	= &bus_mixer0_clk.common.hw,
+		[CLK_BUS_MIXER1]	= &bus_mixer1_clk.common.hw,
+		[CLK_BUS_WB]		= &bus_wb_clk.common.hw,
+
+		[CLK_MIXER0_DIV]	= &mixer0_div_clk.common.hw,
+		[CLK_MIXER1_DIV]	= &mixer1_div_clk.common.hw,
+		[CLK_WB_DIV]		= &wb_div_clk.common.hw,
+	},
+	.num	= CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun8i_a83t_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	/*
+	 * For A83T, H3 and R40, mixer1 reset line is shared with wb, so
+	 * only RST_WB is exported here.
+	 */
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static struct ccu_reset_map sun50i_a64_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	[RST_MIXER1]	= { 0x08, BIT(1) },
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun8i_a83t_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun8i_a83t_de2_resets),
+};
+
+static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun50i_a64_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun50i_a64_de2_resets),
+};
+
+static int sunxi_de2_clk_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct clk *bus_clk, *mod_clk;
+	struct reset_control *rstc;
+	void __iomem *reg;
+	const struct sunxi_ccu_desc *ccu_desc;
+	int ret;
+
+	ccu_desc = of_device_get_match_data(&pdev->dev);
+	if (!ccu_desc)
+		return -EINVAL;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	bus_clk = devm_clk_get(&pdev->dev, "bus");
+	if (IS_ERR(bus_clk)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
+		return ret;
+	}
+
+	mod_clk = devm_clk_get(&pdev->dev, "mod");
+	if (IS_ERR(mod_clk)) {
+		ret = PTR_ERR(mod_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get mod clk: %d\n", ret);
+		return ret;
+	}
+
+	rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(rstc)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev,
+				"Couldn't get reset control: %d\n", ret);
+		return ret;
+	}
+
+	/* The clocks need to be enabled for us to access the registers */
+	ret = clk_prepare_enable(bus_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(mod_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable mod clk: %d\n", ret);
+		return ret;
+	}
+
+	/* The reset control needs to be asserted for the controls to work */
+	ret = reset_control_deassert(rstc);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"Couldn't deassert reset control: %d\n", ret);
+		goto err_disable_clk;
+	}
+
+	ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
+	if (ret)
+		goto err_assert_reset;
+
+	return 0;
+
+err_assert_reset:
+	reset_control_assert(rstc);
+err_disable_clk:
+	clk_disable_unprepare(bus_clk);
+	return ret;
+}
+
+static const struct of_device_id sunxi_de2_clk_ids[] = {
+	{
+		.compatible = "allwinner,sun8i-a83t-de2-clk",
+		.data = &sun8i_a83t_de2_clk_desc,
+	},
+	{
+		.compatible = "allwinner,sun50i-h5-de2-clk",
+		.data = &sun50i_a64_de2_clk_desc,
+	},
+	/*
+	 * The Allwinner A64 SoC needs some bit to be poke in syscon to make
+	 * DE2 really working.
+	 * So there's currently no A64 compatible here.
+	 * H5 shares the same reset line with A64, so here H5 is using the
+	 * clock description of A64.
+	 */
+	{ }
+};
+
+static struct platform_driver sunxi_de2_clk_driver = {
+	.probe	= sunxi_de2_clk_probe,
+	.driver	= {
+		.name	= "sunxi-de2-clks",
+		.of_match_table	= sunxi_de2_clk_ids,
+	},
+};
+builtin_platform_driver(sunxi_de2_clk_driver);
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.h b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
new file mode 100644
index 000000000000..530c006e0ae9
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016 Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CCU_SUN8I_DE2_H_
+#define _CCU_SUN8I_DE2_H_
+
+#include <dt-bindings/clock/sun8i-de2.h>
+#include <dt-bindings/reset/sun8i-de2.h>
+
+/* Intermediary clock dividers are not exported */
+#define CLK_MIXER0_DIV	3
+#define CLK_MIXER1_DIV	4
+#define CLK_WB_DIV	5
+
+#define CLK_NUMBER	(CLK_WB + 1)
+
+#endif /* _CCU_SUN8I_DE2_H_ */
-- 
2.12.2

[PATCH 02/13] clk: sunxi-ng: add support for DE2 CCU

[Icenowy Zheng]

The "Display Engine 2.0" in Allwinner newer SoCs contains a clock
management unit for its subunits, like the DE CCU in A80.

Add a sunxi-ng style driver for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 drivers/clk/sunxi-ng/Kconfig         |   5 +
 drivers/clk/sunxi-ng/Makefile        |   1 +
 drivers/clk/sunxi-ng/ccu-sun8i-de2.c | 218 +++++++++++++++++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun8i-de2.h |  28 +++++
 4 files changed, 252 insertions(+)
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun8i-de2.h

diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
index 64088e599404..2e4d804fbf61 100644
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -140,6 +140,11 @@ config SUN8I_V3S_CCU
 	default MACH_SUN8I
 	depends on MACH_SUN8I || COMPILE_TEST
 
+config SUN8I_DE2_CCU
+	bool "Support for the Allwinner SoCs DE2 CCU"
+	select SUNXI_CCU_DIV
+	select SUNXI_CCU_GATE
+
 config SUN9I_A80_CCU
 	bool "Support for the Allwinner A80 CCU"
 	select SUNXI_CCU_DIV
diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 0ec02fe14c50..be616279450e 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_SUN8I_A23_CCU)	+= ccu-sun8i-a23.o
 obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
 obj-$(CONFIG_SUN8I_H3_CCU)	+= ccu-sun8i-h3.o
 obj-$(CONFIG_SUN8I_V3S_CCU)	+= ccu-sun8i-v3s.o
+obj-$(CONFIG_SUN8I_DE2_CCU)	+= ccu-sun8i-de2.o
 obj-$(CONFIG_SUN8I_R_CCU)	+= ccu-sun8i-r.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-de.o
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.c b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
new file mode 100644
index 000000000000..adb2c344692a
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.c
@@ -0,0 +1,218 @@
+/*
+ * Copyright (c) 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "ccu_common.h"
+#include "ccu_div.h"
+#include "ccu_gate.h"
+#include "ccu_reset.h"
+
+#include "ccu-sun8i-de2.h"
+
+static SUNXI_CCU_GATE(bus_mixer0_clk,	"bus-mixer0",	"bus-de",
+		      0x04, BIT(0), 0);
+static SUNXI_CCU_GATE(bus_mixer1_clk,	"bus-mixer1",	"bus-de",
+		      0x04, BIT(1), 0);
+static SUNXI_CCU_GATE(bus_wb_clk,	"bus-wb",	"bus-de",
+		      0x04, BIT(2), 0);
+
+static SUNXI_CCU_GATE(mixer0_clk,	"mixer0",	"mixer0-div",
+		      0x00, BIT(0), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(mixer1_clk,	"mixer1",	"mixer1-div",
+		      0x00, BIT(1), CLK_SET_RATE_PARENT);
+static SUNXI_CCU_GATE(wb_clk,		"wb",		"wb-div",
+		      0x00, BIT(2), CLK_SET_RATE_PARENT);
+
+static SUNXI_CCU_M(mixer0_div_clk, "mixer0-div", "de", 0x0c, 0, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(mixer1_div_clk, "mixer1-div", "de", 0x0c, 4, 4,
+		   CLK_SET_RATE_PARENT);
+static SUNXI_CCU_M(wb_div_clk, "wb-div", "de", 0x0c, 8, 4,
+		   CLK_SET_RATE_PARENT);
+
+static struct ccu_common *sunxi_de2_clks[] = {
+	&mixer0_clk.common,
+	&mixer1_clk.common,
+	&wb_clk.common,
+
+	&bus_mixer0_clk.common,
+	&bus_mixer1_clk.common,
+	&bus_wb_clk.common,
+
+	&mixer0_div_clk.common,
+	&mixer1_div_clk.common,
+	&wb_div_clk.common,
+};
+
+static struct clk_hw_onecell_data sunxi_de2_hw_clks = {
+	.hws	= {
+		[CLK_MIXER0]		= &mixer0_clk.common.hw,
+		[CLK_MIXER1]		= &mixer1_clk.common.hw,
+		[CLK_WB]		= &wb_clk.common.hw,
+
+		[CLK_BUS_MIXER0]	= &bus_mixer0_clk.common.hw,
+		[CLK_BUS_MIXER1]	= &bus_mixer1_clk.common.hw,
+		[CLK_BUS_WB]		= &bus_wb_clk.common.hw,
+
+		[CLK_MIXER0_DIV]	= &mixer0_div_clk.common.hw,
+		[CLK_MIXER1_DIV]	= &mixer1_div_clk.common.hw,
+		[CLK_WB_DIV]		= &wb_div_clk.common.hw,
+	},
+	.num	= CLK_NUMBER,
+};
+
+static struct ccu_reset_map sun8i_a83t_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	/*
+	 * For A83T, H3 and R40, mixer1 reset line is shared with wb, so
+	 * only RST_WB is exported here.
+	 */
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static struct ccu_reset_map sun50i_a64_de2_resets[] = {
+	[RST_MIXER0]	= { 0x08, BIT(0) },
+	[RST_MIXER1]	= { 0x08, BIT(1) },
+	[RST_WB]	= { 0x08, BIT(2) },
+};
+
+static const struct sunxi_ccu_desc sun8i_a83t_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun8i_a83t_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun8i_a83t_de2_resets),
+};
+
+static const struct sunxi_ccu_desc sun50i_a64_de2_clk_desc = {
+	.ccu_clks	= sunxi_de2_clks,
+	.num_ccu_clks	= ARRAY_SIZE(sunxi_de2_clks),
+
+	.hw_clks	= &sunxi_de2_hw_clks,
+
+	.resets		= sun50i_a64_de2_resets,
+	.num_resets	= ARRAY_SIZE(sun50i_a64_de2_resets),
+};
+
+static int sunxi_de2_clk_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+	struct clk *bus_clk, *mod_clk;
+	struct reset_control *rstc;
+	void __iomem *reg;
+	const struct sunxi_ccu_desc *ccu_desc;
+	int ret;
+
+	ccu_desc = of_device_get_match_data(&pdev->dev);
+	if (!ccu_desc)
+		return -EINVAL;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	reg = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	bus_clk = devm_clk_get(&pdev->dev, "bus");
+	if (IS_ERR(bus_clk)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret);
+		return ret;
+	}
+
+	mod_clk = devm_clk_get(&pdev->dev, "mod");
+	if (IS_ERR(mod_clk)) {
+		ret = PTR_ERR(mod_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "Couldn't get mod clk: %d\n", ret);
+		return ret;
+	}
+
+	rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(rstc)) {
+		ret = PTR_ERR(bus_clk);
+		if (ret != -EPROBE_DEFER)
+			dev_err(&pdev->dev,
+				"Couldn't get reset control: %d\n", ret);
+		return ret;
+	}
+
+	/* The clocks need to be enabled for us to access the registers */
+	ret = clk_prepare_enable(bus_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(mod_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Couldn't enable mod clk: %d\n", ret);
+		return ret;
+	}
+
+	/* The reset control needs to be asserted for the controls to work */
+	ret = reset_control_deassert(rstc);
+	if (ret) {
+		dev_err(&pdev->dev,
+			"Couldn't deassert reset control: %d\n", ret);
+		goto err_disable_clk;
+	}
+
+	ret = sunxi_ccu_probe(pdev->dev.of_node, reg, ccu_desc);
+	if (ret)
+		goto err_assert_reset;
+
+	return 0;
+
+err_assert_reset:
+	reset_control_assert(rstc);
+err_disable_clk:
+	clk_disable_unprepare(bus_clk);
+	return ret;
+}
+
+static const struct of_device_id sunxi_de2_clk_ids[] = {
+	{
+		.compatible = "allwinner,sun8i-a83t-de2-clk",
+		.data = &sun8i_a83t_de2_clk_desc,
+	},
+	{
+		.compatible = "allwinner,sun50i-h5-de2-clk",
+		.data = &sun50i_a64_de2_clk_desc,
+	},
+	/*
+	 * The Allwinner A64 SoC needs some bit to be poke in syscon to make
+	 * DE2 really working.
+	 * So there's currently no A64 compatible here.
+	 * H5 shares the same reset line with A64, so here H5 is using the
+	 * clock description of A64.
+	 */
+	{ }
+};
+
+static struct platform_driver sunxi_de2_clk_driver = {
+	.probe	= sunxi_de2_clk_probe,
+	.driver	= {
+		.name	= "sunxi-de2-clks",
+		.of_match_table	= sunxi_de2_clk_ids,
+	},
+};
+builtin_platform_driver(sunxi_de2_clk_driver);
diff --git a/drivers/clk/sunxi-ng/ccu-sun8i-de2.h b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
new file mode 100644
index 000000000000..530c006e0ae9
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun8i-de2.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright 2016 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _CCU_SUN8I_DE2_H_
+#define _CCU_SUN8I_DE2_H_
+
+#include <dt-bindings/clock/sun8i-de2.h>
+#include <dt-bindings/reset/sun8i-de2.h>
+
+/* Intermediary clock dividers are not exported */
+#define CLK_MIXER0_DIV	3
+#define CLK_MIXER1_DIV	4
+#define CLK_WB_DIV	5
+
+#define CLK_NUMBER	(CLK_WB + 1)
+
+#endif /* _CCU_SUN8I_DE2_H_ */
-- 
2.12.2

[PATCH 03/13] dt-bindings: add bindings for DE2 on V3s SoC

[Icenowy Zheng]

Allwinner V3s SoC have a display engine which have a different pipeline
with older SoCs.

Add document for it (new compatibles and the new "mixer" part).

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../bindings/display/sunxi/sun4i-drm.txt           | 29 ++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index 7acdbf14ae1c..33452884b96e 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -41,6 +41,7 @@ Required properties:
    * allwinner,sun6i-a31-tcon
    * allwinner,sun6i-a31s-tcon
    * allwinner,sun8i-a33-tcon
+   * allwinner,sun8i-v3s-tcon
  - reg: base address and size of memory-mapped region
  - interrupts: interrupt associated to this IP
  - clocks: phandles to the clocks feeding the TCON. Three are needed:
@@ -62,7 +63,7 @@ Required properties:
   second the block connected to the TCON channel 1 (usually the TV
   encoder)
 
-On SoCs other than the A33, there is one more clock required:
+On SoCs other than the A33 and V3s, there is one more clock required:
    - 'tcon-ch1': The clock driving the TCON channel 1
 
 DRC
@@ -148,6 +149,26 @@ Required properties:
   Documentation/devicetree/bindings/media/video-interfaces.txt. The
   first port should be the input endpoints, the second one the outputs
 
+Display Engine 2.0 Mixer
+------------------------
+
+The DE2 mixer have many functionalities, currently only layer blending is
+supported.
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun8i-v3s-de2-mixer
+  - reg: base address and size of the memory-mapped region.
+  - clocks: phandles to the clocks feeding the frontend and backend
+    * bus: the backend interface clock
+    * ram: the backend DRAM clock
+  - clock-names: the clock names mentioned above
+  - resets: phandles to the reset controllers driving the backend
+
+- ports: A ports node with endpoint definitions as defined in
+  Documentation/devicetree/bindings/media/video-interfaces.txt. The
+  first port should be the input endpoints, the second one the output
+
 
 Display Engine Pipeline
 -----------------------
@@ -162,9 +183,13 @@ Required properties:
     * allwinner,sun6i-a31-display-engine
     * allwinner,sun6i-a31s-display-engine
     * allwinner,sun8i-a33-display-engine
+    * allwinner,sun8i-v3s-display-engine
 
   - allwinner,pipelines: list of phandle to the display engine
-    frontends available.
+    pipeline entry point. For SoCs with original DE (currently
+    all SoCs supported by display engine except V3s), this
+    phandle should be a display frontend; for SoCs with DE2,
+    this phandle should be a mixer.
 
 Example:
 
-- 
2.12.2

[PATCH 03/13] dt-bindings: add bindings for DE2 on V3s SoC

[Icenowy Zheng]

Allwinner V3s SoC have a display engine which have a different pipeline
with older SoCs.

Add document for it (new compatibles and the new "mixer" part).

Signed-off-by: Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 .../bindings/display/sunxi/sun4i-drm.txt           | 29 ++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index 7acdbf14ae1c..33452884b96e 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -41,6 +41,7 @@ Required properties:
    * allwinner,sun6i-a31-tcon
    * allwinner,sun6i-a31s-tcon
    * allwinner,sun8i-a33-tcon
+   * allwinner,sun8i-v3s-tcon
  - reg: base address and size of memory-mapped region
  - interrupts: interrupt associated to this IP
  - clocks: phandles to the clocks feeding the TCON. Three are needed:
@@ -62,7 +63,7 @@ Required properties:
   second the block connected to the TCON channel 1 (usually the TV
   encoder)
 
-On SoCs other than the A33, there is one more clock required:
+On SoCs other than the A33 and V3s, there is one more clock required:
    - 'tcon-ch1': The clock driving the TCON channel 1
 
 DRC
@@ -148,6 +149,26 @@ Required properties:
   Documentation/devicetree/bindings/media/video-interfaces.txt. The
   first port should be the input endpoints, the second one the outputs
 
+Display Engine 2.0 Mixer
+------------------------
+
+The DE2 mixer have many functionalities, currently only layer blending is
+supported.
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun8i-v3s-de2-mixer
+  - reg: base address and size of the memory-mapped region.
+  - clocks: phandles to the clocks feeding the frontend and backend
+    * bus: the backend interface clock
+    * ram: the backend DRAM clock
+  - clock-names: the clock names mentioned above
+  - resets: phandles to the reset controllers driving the backend
+
+- ports: A ports node with endpoint definitions as defined in
+  Documentation/devicetree/bindings/media/video-interfaces.txt. The
+  first port should be the input endpoints, the second one the output
+
 
 Display Engine Pipeline
 -----------------------
@@ -162,9 +183,13 @@ Required properties:
     * allwinner,sun6i-a31-display-engine
     * allwinner,sun6i-a31s-display-engine
     * allwinner,sun8i-a33-display-engine
+    * allwinner,sun8i-v3s-display-engine
 
   - allwinner,pipelines: list of phandle to the display engine
-    frontends available.
+    pipeline entry point. For SoCs with original DE (currently
+    all SoCs supported by display engine except V3s), this
+    phandle should be a display frontend; for SoCs with DE2,
+    this phandle should be a mixer.
 
 Example:
 
-- 
2.12.2

[PATCH 03/13] dt-bindings: add bindings for DE2 on V3s SoC

[Icenowy Zheng]

Allwinner V3s SoC have a display engine which have a different pipeline
with older SoCs.

Add document for it (new compatibles and the new "mixer" part).

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
---
 .../bindings/display/sunxi/sun4i-drm.txt           | 29 ++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index 7acdbf14ae1c..33452884b96e 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -41,6 +41,7 @@ Required properties:
    * allwinner,sun6i-a31-tcon
    * allwinner,sun6i-a31s-tcon
    * allwinner,sun8i-a33-tcon
+   * allwinner,sun8i-v3s-tcon
  - reg: base address and size of memory-mapped region
  - interrupts: interrupt associated to this IP
  - clocks: phandles to the clocks feeding the TCON. Three are needed:
@@ -62,7 +63,7 @@ Required properties:
   second the block connected to the TCON channel 1 (usually the TV
   encoder)
 
-On SoCs other than the A33, there is one more clock required:
+On SoCs other than the A33 and V3s, there is one more clock required:
    - 'tcon-ch1': The clock driving the TCON channel 1
 
 DRC
@@ -148,6 +149,26 @@ Required properties:
   Documentation/devicetree/bindings/media/video-interfaces.txt. The
   first port should be the input endpoints, the second one the outputs
 
+Display Engine 2.0 Mixer
+------------------------
+
+The DE2 mixer have many functionalities, currently only layer blending is
+supported.
+
+Required properties:
+  - compatible: value must be one of:
+    * allwinner,sun8i-v3s-de2-mixer
+  - reg: base address and size of the memory-mapped region.
+  - clocks: phandles to the clocks feeding the frontend and backend
+    * bus: the backend interface clock
+    * ram: the backend DRAM clock
+  - clock-names: the clock names mentioned above
+  - resets: phandles to the reset controllers driving the backend
+
+- ports: A ports node with endpoint definitions as defined in
+  Documentation/devicetree/bindings/media/video-interfaces.txt. The
+  first port should be the input endpoints, the second one the output
+
 
 Display Engine Pipeline
 -----------------------
@@ -162,9 +183,13 @@ Required properties:
     * allwinner,sun6i-a31-display-engine
     * allwinner,sun6i-a31s-display-engine
     * allwinner,sun8i-a33-display-engine
+    * allwinner,sun8i-v3s-display-engine
 
   - allwinner,pipelines: list of phandle to the display engine
-    frontends available.
+    pipeline entry point. For SoCs with original DE (currently
+    all SoCs supported by display engine except V3s), this
+    phandle should be a display frontend; for SoCs with DE2,
+    this phandle should be a mixer.
 
 Example:
 
-- 
2.12.2

[PATCH 04/13] drm/sun4i: return only planes for layers created

[Icenowy Zheng]

As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
driver, we will finally have two types of layers.

Each layer is bound to a drm_plane that is CRTC-specific, so we create
them when initializing CRTC (calling sun4i_layers_init, which will be
generalized in next patch). The drm_plane's will be used when creating
CRTC, but the CRTC initialization code do not care other properties of
the layer, so we let the sun4i_layers_init function return drm_plane's
only.

As we have no need to trace the layers after the CRTC is properly
created, we drop the layers pointer in sun4i_crtc struct.

Doing these things makes the CRTC code independent to the type of layer
(the sun4i_layers_init function name is still hardcoded and will be
changed in the next patch), so that we can finally gain support for the
mixer in DE2, which will has different layers.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c  | 23 ++++++++++++-----------
 drivers/gpu/drm/sun4i/sun4i_crtc.h  |  1 -
 drivers/gpu/drm/sun4i/sun4i_layer.c | 18 ++++++++++--------
 drivers/gpu/drm/sun4i/sun4i_layer.h |  4 ++--
 4 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 3c876c3a356a..708b3543d4e9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -139,6 +139,7 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 				   struct sun4i_tcon *tcon)
 {
 	struct sun4i_crtc *scrtc;
+	struct drm_plane **planes;
 	struct drm_plane *primary = NULL, *cursor = NULL;
 	int ret, i;
 
@@ -149,22 +150,22 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 	scrtc->tcon = tcon;
 
 	/* Create our layers */
-	scrtc->layers = sun4i_layers_init(drm, scrtc->backend);
-	if (IS_ERR(scrtc->layers)) {
+	planes = sun4i_layers_init(drm, scrtc);
+	if (IS_ERR(planes)) {
 		dev_err(drm->dev, "Couldn't create the planes\n");
 		return NULL;
 	}
 
 	/* find primary and cursor planes for drm_crtc_init_with_planes */
-	for (i = 0; scrtc->layers[i]; i++) {
-		struct sun4i_layer *layer = scrtc->layers[i];
+	for (i = 0; planes[i]; i++) {
+		struct drm_plane *plane = planes[i];
 
-		switch (layer->plane.type) {
+		switch (plane->type) {
 		case DRM_PLANE_TYPE_PRIMARY:
-			primary = &layer->plane;
+			primary = plane;
 			break;
 		case DRM_PLANE_TYPE_CURSOR:
-			cursor = &layer->plane;
+			cursor = plane;
 			break;
 		default:
 			break;
@@ -188,12 +189,12 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 						   1);
 
 	/* Set possible_crtcs to this crtc for overlay planes */
-	for (i = 0; scrtc->layers[i]; i++) {
+	for (i = 0; planes[i]; i++) {
 		uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
-		struct sun4i_layer *layer = scrtc->layers[i];
+		struct drm_plane *plane = planes[i];
 
-		if (layer->plane.type == DRM_PLANE_TYPE_OVERLAY)
-			layer->plane.possible_crtcs = possible_crtcs;
+		if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+			plane->possible_crtcs = possible_crtcs;
 	}
 
 	return scrtc;
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.h b/drivers/gpu/drm/sun4i/sun4i_crtc.h
index 230cb8f0d601..4dae3508424a 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.h
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.h
@@ -19,7 +19,6 @@ struct sun4i_crtc {
 
 	struct sun4i_backend		*backend;
 	struct sun4i_tcon		*tcon;
-	struct sun4i_layer		**layers;
 };
 
 static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index f26bde5b9117..e1f03e1cc0ac 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -16,6 +16,7 @@
 #include <drm/drmP.h>
 
 #include "sun4i_backend.h"
+#include "sun4i_crtc.h"
 #include "sun4i_layer.h"
 
 struct sun4i_plane_desc {
@@ -128,15 +129,16 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
 	return layer;
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend)
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc)
 {
-	struct sun4i_layer **layers;
+	struct drm_plane **planes;
+	struct sun4i_backend *backend = crtc->backend;
 	int i;
 
-	layers = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
-			      sizeof(*layers), GFP_KERNEL);
-	if (!layers)
+	planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
+			      sizeof(*planes), GFP_KERNEL);
+	if (!planes)
 		return ERR_PTR(-ENOMEM);
 
 	/*
@@ -178,8 +180,8 @@ struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
 				   SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(plane->pipe));
 
 		layer->id = i;
-		layers[i] = layer;
+		planes[i] = &layer->plane;
 	};
 
-	return layers;
+	return planes;
 }
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.h b/drivers/gpu/drm/sun4i/sun4i_layer.h
index 4be1f0919df2..5ea5c994d6ea 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.h
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.h
@@ -26,7 +26,7 @@ plane_to_sun4i_layer(struct drm_plane *plane)
 	return container_of(plane, struct sun4i_layer, plane);
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend);
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc);
 
 #endif /* _SUN4I_LAYER_H_ */
-- 
2.12.2

[PATCH 04/13] drm/sun4i: return only planes for layers created

[Icenowy Zheng]

As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
driver, we will finally have two types of layers.

Each layer is bound to a drm_plane that is CRTC-specific, so we create
them when initializing CRTC (calling sun4i_layers_init, which will be
generalized in next patch). The drm_plane's will be used when creating
CRTC, but the CRTC initialization code do not care other properties of
the layer, so we let the sun4i_layers_init function return drm_plane's
only.

As we have no need to trace the layers after the CRTC is properly
created, we drop the layers pointer in sun4i_crtc struct.

Doing these things makes the CRTC code independent to the type of layer
(the sun4i_layers_init function name is still hardcoded and will be
changed in the next patch), so that we can finally gain support for the
mixer in DE2, which will has different layers.

Signed-off-by: Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c  | 23 ++++++++++++-----------
 drivers/gpu/drm/sun4i/sun4i_crtc.h  |  1 -
 drivers/gpu/drm/sun4i/sun4i_layer.c | 18 ++++++++++--------
 drivers/gpu/drm/sun4i/sun4i_layer.h |  4 ++--
 4 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 3c876c3a356a..708b3543d4e9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -139,6 +139,7 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 				   struct sun4i_tcon *tcon)
 {
 	struct sun4i_crtc *scrtc;
+	struct drm_plane **planes;
 	struct drm_plane *primary = NULL, *cursor = NULL;
 	int ret, i;
 
@@ -149,22 +150,22 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 	scrtc->tcon = tcon;
 
 	/* Create our layers */
-	scrtc->layers = sun4i_layers_init(drm, scrtc->backend);
-	if (IS_ERR(scrtc->layers)) {
+	planes = sun4i_layers_init(drm, scrtc);
+	if (IS_ERR(planes)) {
 		dev_err(drm->dev, "Couldn't create the planes\n");
 		return NULL;
 	}
 
 	/* find primary and cursor planes for drm_crtc_init_with_planes */
-	for (i = 0; scrtc->layers[i]; i++) {
-		struct sun4i_layer *layer = scrtc->layers[i];
+	for (i = 0; planes[i]; i++) {
+		struct drm_plane *plane = planes[i];
 
-		switch (layer->plane.type) {
+		switch (plane->type) {
 		case DRM_PLANE_TYPE_PRIMARY:
-			primary = &layer->plane;
+			primary = plane;
 			break;
 		case DRM_PLANE_TYPE_CURSOR:
-			cursor = &layer->plane;
+			cursor = plane;
 			break;
 		default:
 			break;
@@ -188,12 +189,12 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 						   1);
 
 	/* Set possible_crtcs to this crtc for overlay planes */
-	for (i = 0; scrtc->layers[i]; i++) {
+	for (i = 0; planes[i]; i++) {
 		uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
-		struct sun4i_layer *layer = scrtc->layers[i];
+		struct drm_plane *plane = planes[i];
 
-		if (layer->plane.type == DRM_PLANE_TYPE_OVERLAY)
-			layer->plane.possible_crtcs = possible_crtcs;
+		if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+			plane->possible_crtcs = possible_crtcs;
 	}
 
 	return scrtc;
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.h b/drivers/gpu/drm/sun4i/sun4i_crtc.h
index 230cb8f0d601..4dae3508424a 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.h
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.h
@@ -19,7 +19,6 @@ struct sun4i_crtc {
 
 	struct sun4i_backend		*backend;
 	struct sun4i_tcon		*tcon;
-	struct sun4i_layer		**layers;
 };
 
 static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index f26bde5b9117..e1f03e1cc0ac 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -16,6 +16,7 @@
 #include <drm/drmP.h>
 
 #include "sun4i_backend.h"
+#include "sun4i_crtc.h"
 #include "sun4i_layer.h"
 
 struct sun4i_plane_desc {
@@ -128,15 +129,16 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
 	return layer;
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend)
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc)
 {
-	struct sun4i_layer **layers;
+	struct drm_plane **planes;
+	struct sun4i_backend *backend = crtc->backend;
 	int i;
 
-	layers = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
-			      sizeof(*layers), GFP_KERNEL);
-	if (!layers)
+	planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
+			      sizeof(*planes), GFP_KERNEL);
+	if (!planes)
 		return ERR_PTR(-ENOMEM);
 
 	/*
@@ -178,8 +180,8 @@ struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
 				   SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(plane->pipe));
 
 		layer->id = i;
-		layers[i] = layer;
+		planes[i] = &layer->plane;
 	};
 
-	return layers;
+	return planes;
 }
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.h b/drivers/gpu/drm/sun4i/sun4i_layer.h
index 4be1f0919df2..5ea5c994d6ea 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.h
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.h
@@ -26,7 +26,7 @@ plane_to_sun4i_layer(struct drm_plane *plane)
 	return container_of(plane, struct sun4i_layer, plane);
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend);
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc);
 
 #endif /* _SUN4I_LAYER_H_ */
-- 
2.12.2

[PATCH 04/13] drm/sun4i: return only planes for layers created

[Icenowy Zheng]

As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
driver, we will finally have two types of layers.

Each layer is bound to a drm_plane that is CRTC-specific, so we create
them when initializing CRTC (calling sun4i_layers_init, which will be
generalized in next patch). The drm_plane's will be used when creating
CRTC, but the CRTC initialization code do not care other properties of
the layer, so we let the sun4i_layers_init function return drm_plane's
only.

As we have no need to trace the layers after the CRTC is properly
created, we drop the layers pointer in sun4i_crtc struct.

Doing these things makes the CRTC code independent to the type of layer
(the sun4i_layers_init function name is still hardcoded and will be
changed in the next patch), so that we can finally gain support for the
mixer in DE2, which will has different layers.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c  | 23 ++++++++++++-----------
 drivers/gpu/drm/sun4i/sun4i_crtc.h  |  1 -
 drivers/gpu/drm/sun4i/sun4i_layer.c | 18 ++++++++++--------
 drivers/gpu/drm/sun4i/sun4i_layer.h |  4 ++--
 4 files changed, 24 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index 3c876c3a356a..708b3543d4e9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -139,6 +139,7 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 				   struct sun4i_tcon *tcon)
 {
 	struct sun4i_crtc *scrtc;
+	struct drm_plane **planes;
 	struct drm_plane *primary = NULL, *cursor = NULL;
 	int ret, i;
 
@@ -149,22 +150,22 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 	scrtc->tcon = tcon;
 
 	/* Create our layers */
-	scrtc->layers = sun4i_layers_init(drm, scrtc->backend);
-	if (IS_ERR(scrtc->layers)) {
+	planes = sun4i_layers_init(drm, scrtc);
+	if (IS_ERR(planes)) {
 		dev_err(drm->dev, "Couldn't create the planes\n");
 		return NULL;
 	}
 
 	/* find primary and cursor planes for drm_crtc_init_with_planes */
-	for (i = 0; scrtc->layers[i]; i++) {
-		struct sun4i_layer *layer = scrtc->layers[i];
+	for (i = 0; planes[i]; i++) {
+		struct drm_plane *plane = planes[i];
 
-		switch (layer->plane.type) {
+		switch (plane->type) {
 		case DRM_PLANE_TYPE_PRIMARY:
-			primary = &layer->plane;
+			primary = plane;
 			break;
 		case DRM_PLANE_TYPE_CURSOR:
-			cursor = &layer->plane;
+			cursor = plane;
 			break;
 		default:
 			break;
@@ -188,12 +189,12 @@ struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
 						   1);
 
 	/* Set possible_crtcs to this crtc for overlay planes */
-	for (i = 0; scrtc->layers[i]; i++) {
+	for (i = 0; planes[i]; i++) {
 		uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
-		struct sun4i_layer *layer = scrtc->layers[i];
+		struct drm_plane *plane = planes[i];
 
-		if (layer->plane.type == DRM_PLANE_TYPE_OVERLAY)
-			layer->plane.possible_crtcs = possible_crtcs;
+		if (plane->type == DRM_PLANE_TYPE_OVERLAY)
+			plane->possible_crtcs = possible_crtcs;
 	}
 
 	return scrtc;
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.h b/drivers/gpu/drm/sun4i/sun4i_crtc.h
index 230cb8f0d601..4dae3508424a 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.h
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.h
@@ -19,7 +19,6 @@ struct sun4i_crtc {
 
 	struct sun4i_backend		*backend;
 	struct sun4i_tcon		*tcon;
-	struct sun4i_layer		**layers;
 };
 
 static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index f26bde5b9117..e1f03e1cc0ac 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -16,6 +16,7 @@
 #include <drm/drmP.h>
 
 #include "sun4i_backend.h"
+#include "sun4i_crtc.h"
 #include "sun4i_layer.h"
 
 struct sun4i_plane_desc {
@@ -128,15 +129,16 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
 	return layer;
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend)
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc)
 {
-	struct sun4i_layer **layers;
+	struct drm_plane **planes;
+	struct sun4i_backend *backend = crtc->backend;
 	int i;
 
-	layers = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
-			      sizeof(*layers), GFP_KERNEL);
-	if (!layers)
+	planes = devm_kcalloc(drm->dev, ARRAY_SIZE(sun4i_backend_planes) + 1,
+			      sizeof(*planes), GFP_KERNEL);
+	if (!planes)
 		return ERR_PTR(-ENOMEM);
 
 	/*
@@ -178,8 +180,8 @@ struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
 				   SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(plane->pipe));
 
 		layer->id = i;
-		layers[i] = layer;
+		planes[i] = &layer->plane;
 	};
 
-	return layers;
+	return planes;
 }
diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.h b/drivers/gpu/drm/sun4i/sun4i_layer.h
index 4be1f0919df2..5ea5c994d6ea 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.h
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.h
@@ -26,7 +26,7 @@ plane_to_sun4i_layer(struct drm_plane *plane)
 	return container_of(plane, struct sun4i_layer, plane);
 }
 
-struct sun4i_layer **sun4i_layers_init(struct drm_device *drm,
-				       struct sun4i_backend *backend);
+struct drm_plane **sun4i_layers_init(struct drm_device *drm,
+				     struct sun4i_crtc *crtc);
 
 #endif /* _SUN4I_LAYER_H_ */
-- 
2.12.2

Re: [linux-sunxi] [PATCH 04/13] drm/sun4i: return only planes for layers created

[Chen-Yu Tsai]

On Thu, May 4, 2017 at 7:41 PM, Icenowy Zheng <icenowy@aosc.io> wrote:
> As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
> driver, we will finally have two types of layers.
>
> Each layer is bound to a drm_plane that is CRTC-specific, so we create
> them when initializing CRTC (calling sun4i_layers_init, which will be
> generalized in next patch). The drm_plane's will be used when creating
> CRTC, but the CRTC initialization code do not care other properties of
> the layer, so we let the sun4i_layers_init function return drm_plane's
> only.
>
> As we have no need to trace the layers after the CRTC is properly
> created, we drop the layers pointer in sun4i_crtc struct.
>
> Doing these things makes the CRTC code independent to the type of layer

Doing this uncouples the CRTC code from the type of layer.

> (the sun4i_layers_init function name is still hardcoded and will be
> changed in the next patch), so that we can finally gain support for the
> mixer in DE2, which will has different layers.

... which has ...

>
> Signed-off-by: Icenowy Zheng <icenowy@aosc.io>

Otherwise,

Reviewed-by: Chen-Yu Tsai <wens@csie.org>

Re: [PATCH 04/13] drm/sun4i: return only planes for layers created

[Chen-Yu Tsai]

On Thu, May 4, 2017 at 7:41 PM, Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org> wrote:
> As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
> driver, we will finally have two types of layers.
>
> Each layer is bound to a drm_plane that is CRTC-specific, so we create
> them when initializing CRTC (calling sun4i_layers_init, which will be
> generalized in next patch). The drm_plane's will be used when creating
> CRTC, but the CRTC initialization code do not care other properties of
> the layer, so we let the sun4i_layers_init function return drm_plane's
> only.
>
> As we have no need to trace the layers after the CRTC is properly
> created, we drop the layers pointer in sun4i_crtc struct.
>
> Doing these things makes the CRTC code independent to the type of layer

Doing this uncouples the CRTC code from the type of layer.

> (the sun4i_layers_init function name is still hardcoded and will be
> changed in the next patch), so that we can finally gain support for the
> mixer in DE2, which will has different layers.

... which has ...

>
> Signed-off-by: Icenowy Zheng <icenowy-h8G6r0blFSE@public.gmane.org>

Otherwise,

Reviewed-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>

[linux-sunxi] [PATCH 04/13] drm/sun4i: return only planes for layers created

[Chen-Yu Tsai]

On Thu, May 4, 2017 at 7:41 PM, Icenowy Zheng <icenowy@aosc.io> wrote:
> As we are going to add support for the Allwinner DE2 Mixer in sun4i-drm
> driver, we will finally have two types of layers.
>
> Each layer is bound to a drm_plane that is CRTC-specific, so we create
> them when initializing CRTC (calling sun4i_layers_init, which will be
> generalized in next patch). The drm_plane's will be used when creating
> CRTC, but the CRTC initialization code do not care other properties of
> the layer, so we let the sun4i_layers_init function return drm_plane's
> only.
>
> As we have no need to trace the layers after the CRTC is properly
> created, we drop the layers pointer in sun4i_crtc struct.
>
> Doing these things makes the CRTC code independent to the type of layer

Doing this uncouples the CRTC code from the type of layer.

> (the sun4i_layers_init function name is still hardcoded and will be
> changed in the next patch), so that we can finally gain support for the
> mixer in DE2, which will has different layers.

... which has ...

>
> Signed-off-by: Icenowy Zheng <icenowy@aosc.io>

Otherwise,

Reviewed-by: Chen-Yu Tsai <wens@csie.org>