The reset-simple code can be useful for drivers outside of drivers/reset that have a few reset controls as part of their features. Let's move it to include/linux/reset.

Cc: Philipp Zabel p.zabel@pengutronix.de Reviewed-by: Philipp Zabel p.zabel@pengutronix.de Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/reset/reset-simple.c | 3 +-- drivers/reset/reset-simple.h | 41 +------------------------------ drivers/reset/reset-socfpga.c | 3 +-- drivers/reset/reset-sunxi.c | 3 +-- drivers/reset/reset-uniphier-glue.c | 3 +-- include/linux/reset/reset-simple.h | 41 ++++++++++++++++++++++++++++++- 6 files changed, 45 insertions(+), 49 deletions(-) delete mode 100644 drivers/reset/reset-simple.h create mode 100644 include/linux/reset/reset-simple.h

diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c index 067e7e7b34f1..c854aa351640 100644 --- a/drivers/reset/reset-simple.c +++ b/drivers/reset/reset-simple.c @@ -18,10 +18,9 @@ #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/reset-controller.h> +#include <linux/reset/reset-simple.h> #include <linux/spinlock.h>

-#include "reset-simple.h" - static inline struct reset_simple_data * to_reset_simple_data(struct reset_controller_dev *rcdev) { diff --git a/drivers/reset/reset-simple.h b/drivers/reset/reset-simple.h deleted file mode 100644 index 08ccb25a55e6..000000000000 --- a/drivers/reset/reset-simple.h +++ /dev/null @@ -1,41 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Simple Reset Controller ops - * - * Based on Allwinner SoCs Reset Controller driver - * - * Copyright 2013 Maxime Ripard - * - * Maxime Ripard maxime.ripard@free-electrons.com - */ - -#ifndef __RESET_SIMPLE_H__ -#define __RESET_SIMPLE_H__ - -#include <linux/io.h> -#include <linux/reset-controller.h> -#include <linux/spinlock.h> - -/** - * struct reset_simple_data - driver data for simple reset controllers - * @lock: spinlock to protect registers during read-modify-write cycles - * @membase: memory mapped I/O register range - * @rcdev: reset controller device base structure - * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits - * are set to assert the reset. Note that this says nothing about - * the voltage level of the actual reset line. - * @status_active_low: if true, bits read back as cleared while the reset is - * asserted. Otherwise, bits read back as set while the - * reset is asserted. - */ -struct reset_simple_data { - spinlock_t lock; - void __iomem *membase; - struct reset_controller_dev rcdev; - bool active_low; - bool status_active_low; -}; - -extern const struct reset_control_ops reset_simple_ops; - -#endif /* __RESET_SIMPLE_H__ */ diff --git a/drivers/reset/reset-socfpga.c b/drivers/reset/reset-socfpga.c index 96953992c2bb..bdd984296196 100644 --- a/drivers/reset/reset-socfpga.c +++ b/drivers/reset/reset-socfpga.c @@ -11,13 +11,12 @@ #include <linux/of_address.h> #include <linux/platform_device.h> #include <linux/reset-controller.h> +#include <linux/reset/reset-simple.h> #include <linux/reset/socfpga.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/types.h>

-#include "reset-simple.h" - #define SOCFPGA_NR_BANKS 8

static int a10_reset_init(struct device_node *np) diff --git a/drivers/reset/reset-sunxi.c b/drivers/reset/reset-sunxi.c index e7f169e57bcf..e752594b6971 100644 --- a/drivers/reset/reset-sunxi.c +++ b/drivers/reset/reset-sunxi.c @@ -14,13 +14,12 @@ #include <linux/of_address.h> #include <linux/platform_device.h> #include <linux/reset-controller.h> +#include <linux/reset/reset-simple.h> #include <linux/reset/sunxi.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/types.h>

-#include "reset-simple.h" - static int sunxi_reset_init(struct device_node *np) { struct reset_simple_data *data; diff --git a/drivers/reset/reset-uniphier-glue.c b/drivers/reset/reset-uniphier-glue.c index 2b188b3bb69a..027990b79f61 100644 --- a/drivers/reset/reset-uniphier-glue.c +++ b/drivers/reset/reset-uniphier-glue.c @@ -9,8 +9,7 @@ #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/reset.h> - -#include "reset-simple.h" +#include <linux/reset/reset-simple.h>

#define MAX_CLKS 2 #define MAX_RSTS 2 diff --git a/include/linux/reset/reset-simple.h b/include/linux/reset/reset-simple.h new file mode 100644 index 000000000000..08ccb25a55e6 --- /dev/null +++ b/include/linux/reset/reset-simple.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Simple Reset Controller ops + * + * Based on Allwinner SoCs Reset Controller driver + * + * Copyright 2013 Maxime Ripard + * + * Maxime Ripard maxime.ripard@free-electrons.com + */ + +#ifndef __RESET_SIMPLE_H__ +#define __RESET_SIMPLE_H__ + +#include <linux/io.h> +#include <linux/reset-controller.h> +#include <linux/spinlock.h> + +/** + * struct reset_simple_data - driver data for simple reset controllers + * @lock: spinlock to protect registers during read-modify-write cycles + * @membase: memory mapped I/O register range + * @rcdev: reset controller device base structure + * @active_low: if true, bits are cleared to assert the reset. Otherwise, bits + * are set to assert the reset. Note that this says nothing about + * the voltage level of the actual reset line. + * @status_active_low: if true, bits read back as cleared while the reset is + * asserted. Otherwise, bits read back as set while the + * reset is asserted. + */ +struct reset_simple_data { + spinlock_t lock; + void __iomem *membase; + struct reset_controller_dev rcdev; + bool active_low; + bool status_active_low; +}; + +extern const struct reset_control_ops reset_simple_ops; + +#endif /* __RESET_SIMPLE_H__ */

The HDMI block has a block that controls clocks and reset signals to the HDMI0 and HDMI1 controllers.

Let's expose that through a clock driver implementing a clock and reset provider.

Cc: Michael Turquette mturquette@baylibre.com Cc: Stephen Boyd sboyd@kernel.org Cc: Rob Herring robh+dt@kernel.org Cc: linux-clk@vger.kernel.org Cc: devicetree@vger.kernel.org Reviewed-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/clk/bcm/Kconfig | 11 +++- drivers/clk/bcm/Makefile | 1 +- drivers/clk/bcm/clk-bcm2711-dvp.c | 127 +++++++++++++++++++++++++++++++- 3 files changed, 139 insertions(+) create mode 100644 drivers/clk/bcm/clk-bcm2711-dvp.c

diff --git a/drivers/clk/bcm/Kconfig b/drivers/clk/bcm/Kconfig index 8c83977a7dc4..784f12c72365 100644 --- a/drivers/clk/bcm/Kconfig +++ b/drivers/clk/bcm/Kconfig @@ -1,4 +1,15 @@ # SPDX-License-Identifier: GPL-2.0-only + +config CLK_BCM2711_DVP + tristate "Broadcom BCM2711 DVP support" + depends on ARCH_BCM2835 ||COMPILE_TEST + depends on COMMON_CLK + default ARCH_BCM2835 + select RESET_SIMPLE + help + Enable common clock framework support for the Broadcom BCM2711 + DVP Controller. + config CLK_BCM2835 bool "Broadcom BCM2835 clock support" depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST diff --git a/drivers/clk/bcm/Makefile b/drivers/clk/bcm/Makefile index 0070ddf6cdd2..2c1349062147 100644 --- a/drivers/clk/bcm/Makefile +++ b/drivers/clk/bcm/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_CLK_BCM_KONA) += clk-kona-setup.o obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm281xx.o obj-$(CONFIG_CLK_BCM_KONA) += clk-bcm21664.o obj-$(CONFIG_COMMON_CLK_IPROC) += clk-iproc-armpll.o clk-iproc-pll.o clk-iproc-asiu.o +obj-$(CONFIG_CLK_BCM2835) += clk-bcm2711-dvp.o obj-$(CONFIG_CLK_BCM2835) += clk-bcm2835.o obj-$(CONFIG_CLK_BCM2835) += clk-bcm2835-aux.o obj-$(CONFIG_CLK_RASPBERRYPI) += clk-raspberrypi.o diff --git a/drivers/clk/bcm/clk-bcm2711-dvp.c b/drivers/clk/bcm/clk-bcm2711-dvp.c new file mode 100644 index 000000000000..c1c4b5857d32 --- /dev/null +++ b/drivers/clk/bcm/clk-bcm2711-dvp.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +// Copyright 2020 Cerno + +#include <linux/clk-provider.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/reset-controller.h> +#include <linux/reset/reset-simple.h> + +#define DVP_HT_RPI_SW_INIT 0x04 +#define DVP_HT_RPI_MISC_CONFIG 0x08 + +#define NR_CLOCKS 2 +#define NR_RESETS 6 + +struct clk_dvp { + struct clk_hw_onecell_data *data; + struct reset_simple_data reset; +}; + +static const struct clk_parent_data clk_dvp_parent = { + .index = 0, +}; + +static int clk_dvp_probe(struct platform_device *pdev) +{ + struct clk_hw_onecell_data *data; + struct resource *res; + struct clk_dvp *dvp; + void __iomem *base; + int ret; + + dvp = devm_kzalloc(&pdev->dev, sizeof(*dvp), GFP_KERNEL); + if (!dvp) + return -ENOMEM; + platform_set_drvdata(pdev, dvp); + + dvp->data = devm_kzalloc(&pdev->dev, + struct_size(dvp->data, hws, NR_CLOCKS), + GFP_KERNEL); + if (!dvp->data) + return -ENOMEM; + data = dvp->data; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + dvp->reset.rcdev.owner = THIS_MODULE; + dvp->reset.rcdev.nr_resets = NR_RESETS; + dvp->reset.rcdev.ops = &reset_simple_ops; + dvp->reset.rcdev.of_node = pdev->dev.of_node; + dvp->reset.membase = base + DVP_HT_RPI_SW_INIT; + spin_lock_init(&dvp->reset.lock); + + ret = reset_controller_register(&dvp->reset.rcdev); + if (ret) + return ret; + + data->hws[0] = clk_hw_register_gate_parent_data(&pdev->dev, + "hdmi0-108MHz", + &clk_dvp_parent, 0, + base + DVP_HT_RPI_MISC_CONFIG, 3, + CLK_GATE_SET_TO_DISABLE, + &dvp->reset.lock); + if (IS_ERR(data->hws[0])) { + ret = PTR_ERR(data->hws[0]); + goto unregister_reset; + } + + data->hws[1] = clk_hw_register_gate_parent_data(&pdev->dev, + "hdmi1-108MHz", + &clk_dvp_parent, 0, + base + DVP_HT_RPI_MISC_CONFIG, 4, + CLK_GATE_SET_TO_DISABLE, + &dvp->reset.lock); + if (IS_ERR(data->hws[1])) { + ret = PTR_ERR(data->hws[1]); + goto unregister_clk0; + } + + data->num = NR_CLOCKS; + ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get, + data); + if (ret) + goto unregister_clk1; + + return 0; + +unregister_clk1: + clk_hw_unregister_gate(data->hws[1]); + +unregister_clk0: + clk_hw_unregister_gate(data->hws[0]); + +unregister_reset: + reset_controller_unregister(&dvp->reset.rcdev); + return ret; +}; + +static int clk_dvp_remove(struct platform_device *pdev) +{ + struct clk_dvp *dvp = platform_get_drvdata(pdev); + struct clk_hw_onecell_data *data = dvp->data; + + clk_hw_unregister_gate(data->hws[1]); + clk_hw_unregister_gate(data->hws[0]); + reset_controller_unregister(&dvp->reset.rcdev); + + return 0; +} + +static const struct of_device_id clk_dvp_dt_ids[] = { + { .compatible = "brcm,brcm2711-dvp", }, + { /* sentinel */ } +}; + +static struct platform_driver clk_dvp_driver = { + .probe = clk_dvp_probe, + .remove = clk_dvp_remove, + .driver = { + .name = "brcm2711-dvp", + .of_match_table = clk_dvp_dt_ids, + }, +}; +module_platform_driver(clk_dvp_driver);

The BCM283x SoCs have a display pipeline composed of several controllers with device tree bindings that are supported by Linux.

Now that we have the DT validation in place, let's split into separate files and convert the device tree bindings for those controllers to schemas.

This is just a 1:1 conversion though, and some bindings were incomplete so it results in example validation warnings that are going to be addressed in the following patches.

Cc: Rob Herring robh+dt@kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Maxime Ripard maxime@cerno.tech --- Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt | 174 +------------------------------------------------------------------------ Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml | 66 +++++++++++++++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml | 73 ++++++++++++++++++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml | 75 +++++++++++++++++++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-hvs.yaml | 37 +++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-pixelvalve0.yaml | 40 +++++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml | 37 +++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml | 42 +++++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml | 34 ++++++++++++++- Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml | 44 ++++++++++++++++++- MAINTAINERS | 2 +- 11 files changed, 449 insertions(+), 175 deletions(-) delete mode 100644 Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-hvs.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-pixelvalve0.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt deleted file mode 100644 index 26649b4c4dd8..000000000000 --- a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt +++ /dev/null @@ -1,174 +0,0 @@ -Broadcom VC4 (VideoCore4) GPU - -The VC4 device present on the Raspberry Pi includes a display system -with HDMI output and the HVS (Hardware Video Scaler) for compositing -display planes. - -Required properties for VC4: -- compatible: Should be "brcm,bcm2835-vc4" or "brcm,cygnus-vc4" - -Required properties for Pixel Valve: -- compatible: Should be one of "brcm,bcm2835-pixelvalve0", - "brcm,bcm2835-pixelvalve1", or "brcm,bcm2835-pixelvalve2" -- reg: Physical base address and length of the PV's registers -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt - -Required properties for HVS: -- compatible: Should be "brcm,bcm2835-hvs" -- reg: Physical base address and length of the HVS's registers -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt - -Required properties for HDMI -- compatible: Should be "brcm,bcm2835-hdmi" -- reg: Physical base address and length of the two register ranges - ("HDMI" and "HD", in that order) -- interrupts: The interrupt numbers - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt -- ddc: phandle of the I2C controller used for DDC EDID probing -- clocks: a) hdmi: The HDMI state machine clock - b) pixel: The pixel clock. - -Optional properties for HDMI: -- hpd-gpios: The GPIO pin for HDMI hotplug detect (if it doesn't appear - as an interrupt/status bit in the HDMI controller - itself). See bindings/pinctrl/brcm,bcm2835-gpio.txt -- dmas: Should contain one entry pointing to the DMA channel used to - transfer audio data -- dma-names: Should contain "audio-rx" - -Required properties for DPI: -- compatible: Should be "brcm,bcm2835-dpi" -- reg: Physical base address and length of the registers -- clocks: a) core: The core clock the unit runs on - b) pixel: The pixel clock that feeds the pixelvalve -- port: Port node with a single endpoint connecting to the panel - device, as defined in [1] - -Required properties for VEC: -- compatible: Should be "brcm,bcm2835-vec" -- reg: Physical base address and length of the registers -- clocks: The core clock the unit runs on -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt - -Required properties for V3D: -- compatible: Should be "brcm,bcm2835-v3d" or "brcm,cygnus-v3d" -- reg: Physical base address and length of the V3D's registers -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt - -Optional properties for V3D: -- clocks: The clock the unit runs on - -Required properties for DSI: -- compatible: Should be "brcm,bcm2835-dsi0" or "brcm,bcm2835-dsi1" -- reg: Physical base address and length of the DSI block's registers -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt -- clocks: a) phy: The DSI PLL clock feeding the DSI analog PHY - b) escape: The DSI ESC clock from CPRMAN - c) pixel: The DSI pixel clock from CPRMAN -- clock-output-names: - The 3 clocks output from the DSI analog PHY: dsi[01]_byte, - dsi[01]_ddr2, and dsi[01]_ddr - -Required properties for the TXP (writeback) block: -- compatible: Should be "brcm,bcm2835-txp" -- reg: Physical base address and length of the TXP block's registers -- interrupts: The interrupt number - See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt - -[1] Documentation/devicetree/bindings/media/video-interfaces.txt - -Example: -pixelvalve@7e807000 { - compatible = "brcm,bcm2835-pixelvalve2"; - reg = <0x7e807000 0x100>; - interrupts = <2 10>; /* pixelvalve */ -}; - -hvs@7e400000 { - compatible = "brcm,bcm2835-hvs"; - reg = <0x7e400000 0x6000>; - interrupts = <2 1>; -}; - -hdmi: hdmi@7e902000 { - compatible = "brcm,bcm2835-hdmi"; - reg = <0x7e902000 0x600>, - <0x7e808000 0x100>; - interrupts = <2 8>, <2 9>; - ddc = <&i2c2>; - hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; - clocks = <&clocks BCM2835_PLLH_PIX>, - <&clocks BCM2835_CLOCK_HSM>; - clock-names = "pixel", "hdmi"; -}; - -dpi: dpi@7e208000 { - compatible = "brcm,bcm2835-dpi"; - reg = <0x7e208000 0x8c>; - clocks = <&clocks BCM2835_CLOCK_VPU>, - <&clocks BCM2835_CLOCK_DPI>; - clock-names = "core", "pixel"; - #address-cells = <1>; - #size-cells = <0>; - - port { - dpi_out: endpoint@0 { - remote-endpoint = <&panel_in>; - }; - }; -}; - -dsi1: dsi@7e700000 { - compatible = "brcm,bcm2835-dsi1"; - reg = <0x7e700000 0x8c>; - interrupts = <2 12>; - #address-cells = <1>; - #size-cells = <0>; - #clock-cells = <1>; - - clocks = <&clocks BCM2835_PLLD_DSI1>, - <&clocks BCM2835_CLOCK_DSI1E>, - <&clocks BCM2835_CLOCK_DSI1P>; - clock-names = "phy", "escape", "pixel"; - - clock-output-names = "dsi1_byte", "dsi1_ddr2", "dsi1_ddr"; - - pitouchscreen: panel@0 { - compatible = "raspberrypi,touchscreen"; - reg = <0>; - - <...> - }; -}; - -vec: vec@7e806000 { - compatible = "brcm,bcm2835-vec"; - reg = <0x7e806000 0x1000>; - clocks = <&clocks BCM2835_CLOCK_VEC>; - interrupts = <2 27>; -}; - -v3d: v3d@7ec00000 { - compatible = "brcm,bcm2835-v3d"; - reg = <0x7ec00000 0x1000>; - interrupts = <1 10>; -}; - -vc4: gpu { - compatible = "brcm,bcm2835-vc4"; -}; - -panel: panel { - compatible = "ontat,yx700wv03", "simple-panel"; - - port { - panel_in: endpoint { - remote-endpoint = <&dpi_out>; - }; - }; -}; diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml new file mode 100644 index 000000000000..288494b70e82 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml @@ -0,0 +1,66 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-dpi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) DPI Controller + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + const: brcm,bcm2835-dpi + + reg: + maxItems: 1 + + clocks: + items: + - description: The core clock the unit runs on + - description: The pixel clock that feeds the pixelvalve + + port: + type: object + description: > + Port node with a single endpoint connecting to the panel, as + defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + +required: + - compatible + - reg + - clocks + - port + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/bcm2835.h> + + panel: panel { + compatible = "ontat,yx700wv03", "simple-panel"; + + port { + panel_in: endpoint { + remote-endpoint = <&dpi_out>; + }; + }; + }; + + dpi: dpi@7e208000 { + compatible = "brcm,bcm2835-dpi"; + reg = <0x7e208000 0x8c>; + clocks = <&clocks BCM2835_CLOCK_VPU>, + <&clocks BCM2835_CLOCK_DPI>; + clock-names = "core", "pixel"; + + port { + dpi_out: endpoint { + remote-endpoint = <&panel_in>; + }; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml new file mode 100644 index 000000000000..3887675f844e --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-dsi0.yaml @@ -0,0 +1,73 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-dsi0.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) DSI Controller + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + enum: + - brcm,bcm2835-dsi0 + - brcm,bcm2835-dsi1 + + reg: + maxItems: 1 + + clocks: + items: + - description: The DSI PLL clock feeding the DSI analog PHY + - description: The DSI ESC clock + - description: The DSI pixel clock + + clock-output-names: true + # FIXME: The meta-schemas don't seem to allow it for now + # items: + # - description: The DSI byte clock for the PHY + # - description: The DSI DDR2 clock + # - description: The DSI DDR clock + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - clock-output-names + - interrupts + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/clock/bcm2835.h> + + dsi1: dsi@7e700000 { + compatible = "brcm,bcm2835-dsi1"; + reg = <0x7e700000 0x8c>; + interrupts = <2 12>; + #address-cells = <1>; + #size-cells = <0>; + #clock-cells = <1>; + + clocks = <&clocks BCM2835_PLLD_DSI1>, + <&clocks BCM2835_CLOCK_DSI1E>, + <&clocks BCM2835_CLOCK_DSI1P>; + clock-names = "phy", "escape", "pixel"; + + clock-output-names = "dsi1_byte", "dsi1_ddr2", "dsi1_ddr"; + + pitouchscreen: panel@0 { + compatible = "raspberrypi,touchscreen"; + reg = <0>; + + /* ... */ + }; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml new file mode 100644 index 000000000000..834cc5f1c254 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) HDMI Controller + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + const: brcm,bcm2835-hdmi + + reg: + items: + - description: HDMI register range + - description: HD register range + + interrupts: + minItems: 2 + + clocks: + items: + - description: The HDMI state machine clock + - description: The pixel clock + + ddc: + allOf: + - $ref: /schemas/types.yaml#/definitions/phandle + description: > + Phandle of the I2C controller used for DDC EDID probing + + hpd-gpios: + description: > + The GPIO pin for the HDMI hotplug detect (if it doesn't appear + as an interrupt/status bit in the HDMI controller itself) + + dmas: + maxItems: 1 + description: > + Should contain one entry pointing to the DMA channel used to + transfer audio data. + + dma-names: + const: audio-rx + +required: + - compatible + - reg + - interrupts + - clocks + - ddc + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/bcm2835.h> + #include <dt-bindings/gpio/gpio.h> + + hdmi: hdmi@7e902000 { + compatible = "brcm,bcm2835-hdmi"; + reg = <0x7e902000 0x600>, + <0x7e808000 0x100>; + interrupts = <2 8>, <2 9>; + ddc = <&i2c2>; + hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; + clocks = <&clocks BCM2835_PLLH_PIX>, + <&clocks BCM2835_CLOCK_HSM>; + clock-names = "pixel", "hdmi"; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-hvs.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-hvs.yaml new file mode 100644 index 000000000000..02410f8d6d49 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-hvs.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-hvs.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) Hardware Video Scaler + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + const: brcm,bcm2835-hvs + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + hvs@7e400000 { + compatible = "brcm,bcm2835-hvs"; + reg = <0x7e400000 0x6000>; + interrupts = <2 1>; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-pixelvalve0.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-pixelvalve0.yaml new file mode 100644 index 000000000000..e60791db1fa1 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-pixelvalve0.yaml @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-pixelvalve0.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) PixelValve + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + enum: + - brcm,bcm2835-pixelvalve0 + - brcm,bcm2835-pixelvalve1 + - brcm,bcm2835-pixelvalve2 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + pixelvalve@7e807000 { + compatible = "brcm,bcm2835-pixelvalve2"; + reg = <0x7e807000 0x100>; + interrupts = <2 10>; /* pixelvalve */ + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml new file mode 100644 index 000000000000..bb186197e471 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml @@ -0,0 +1,37 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-txp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) TXP (writeback) Controller + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + const: brcm,bcm2835-txp + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + txp: txp@7e004000 { + compatible = "brcm,bcm2835-txp"; + reg = <0x7e004000 0x20>; + interrupts = <1 11>; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml new file mode 100644 index 000000000000..8a73780f573d --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-v3d.yaml @@ -0,0 +1,42 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-v3d.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) V3D GPU + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + enum: + - brcm,bcm2835-v3d + - brcm,cygnus-v3d + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + v3d: v3d@7ec00000 { + compatible = "brcm,bcm2835-v3d"; + reg = <0x7ec00000 0x1000>; + interrupts = <1 10>; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml new file mode 100644 index 000000000000..0dcf0c397375 --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-vc4.yaml @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-vc4.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) GPU + +maintainers: + - Eric Anholt eric@anholt.net + +description: > + The VC4 device present on the Raspberry Pi includes a display system + with HDMI output and the HVS (Hardware Video Scaler) for compositing + display planes. + +properties: + compatible: + enum: + - brcm,bcm2835-vc4 + - brcm,cygnus-vc4 + +required: + - compatible + +additionalProperties: false + +examples: + - | + vc4: gpu { + compatible = "brcm,bcm2835-vc4"; + }; + +... diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml new file mode 100644 index 000000000000..d900cc57b4ec --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-vec.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2835-vec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom VC4 (VideoCore4) VEC + +maintainers: + - Eric Anholt eric@anholt.net + +properties: + compatible: + const: brcm,bcm2835-vec + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + interrupts: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - interrupts + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/bcm2835.h> + + vec: vec@7e806000 { + compatible = "brcm,bcm2835-vec"; + reg = <0x7e806000 0x1000>; + clocks = <&clocks BCM2835_CLOCK_VEC>; + interrupts = <2 27>; + }; + +... diff --git a/MAINTAINERS b/MAINTAINERS index 3a003f310574..8d17e2e402fa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5818,7 +5818,7 @@ M: Eric Anholt eric@anholt.net S: Supported T: git git://github.com/anholt/linux T: git git://anongit.freedesktop.org/drm/drm-misc -F: Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt +F: Documentation/devicetree/bindings/display/brcm,bcm2835-*.yaml F: drivers/gpu/drm/vc4/ F: include/uapi/drm/vc4_drm.h

While the device tree and the driver expected a clock-names property, it wasn't explicitly documented in the previous binding. Make sure it is now.

Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring robh+dt@kernel.org Signed-off-by: Maxime Ripard maxime@cerno.tech --- Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml index 288494b70e82..58213c564e03 100644 --- a/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-dpi.yaml @@ -21,6 +21,11 @@ properties: - description: The core clock the unit runs on - description: The pixel clock that feeds the pixelvalve

+ clock-names: + items: + - const: core + - const: pixel + port: type: object description: > @@ -31,6 +36,7 @@ required: - compatible - reg - clocks + - clock-names - port

additionalProperties: false

While the device tree and the driver expected a clock-names property, it wasn't explicitly documented in the previous binding. The documented order was wrong too, so make sure clock-names is there and in the proper order.

Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring robh+dt@kernel.org Signed-off-by: Maxime Ripard maxime@cerno.tech --- Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml index 834cc5f1c254..52b3cdac0bdf 100644 --- a/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml +++ b/Documentation/devicetree/bindings/display/brcm,bcm2835-hdmi.yaml @@ -23,8 +23,13 @@ properties:

clocks: items: - - description: The HDMI state machine clock - description: The pixel clock + - description: The HDMI state machine clock + + clock-names: + items: + - const: pixel + - const: hdmi

ddc: allOf:

vc4_drv.h doesn't have any include guards which prevents it from being included twice. Let's add them.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_drv.h | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 3b1f02efefbe..6f50a91e3933 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -2,6 +2,8 @@ /* * Copyright (C) 2015 Broadcom */ +#ifndef _VC4_DRV_H_ +#define _VC4_DRV_H_

#include <linux/delay.h> #include <linux/refcount.h> @@ -897,3 +899,5 @@ int vc4_perfmon_destroy_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int vc4_perfmon_get_values_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); + +#endif /* _VC4_DRV_H_ */

From: Dave Stevenson dave.stevenson@raspberrypi.com

The HVS found in the BCM2711 is slightly different from the previous generations.

Most notably, the display list layout changes a bit, the LBM doesn't have the same size and the formats ordering for some formats is swapped.

Signed-off-by: Dave Stevenson dave.stevenson@raspberrypi.com Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 24 +++- drivers/gpu/drm/vc4/vc4_drv.h | 4 +- drivers/gpu/drm/vc4/vc4_hvs.c | 16 ++- drivers/gpu/drm/vc4/vc4_plane.c | 194 ++++++++++++++++++++++++--------- drivers/gpu/drm/vc4/vc4_regs.h | 67 +++++++++++- 5 files changed, 246 insertions(+), 59 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 1208258ad3b2..591a10ae1950 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -551,6 +551,7 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); struct drm_display_mode *mode = &crtc->state->adjusted_mode; + u32 dispctrl;

require_hvs_enabled(dev);

@@ -565,11 +566,24 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, * When feeding the transposer, we should operate in oneshot * mode. */ - HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel), - VC4_SET_FIELD(mode->hdisplay, SCALER_DISPCTRLX_WIDTH) | - VC4_SET_FIELD(mode->vdisplay, SCALER_DISPCTRLX_HEIGHT) | - SCALER_DISPCTRLX_ENABLE | - (vc4_state->feed_txp ? SCALER_DISPCTRLX_ONESHOT : 0)); + dispctrl = SCALER_DISPCTRLX_ENABLE; + + if (!vc4->hvs->hvs5) + dispctrl |= VC4_SET_FIELD(mode->hdisplay, + SCALER_DISPCTRLX_WIDTH) | + VC4_SET_FIELD(mode->vdisplay, + SCALER_DISPCTRLX_HEIGHT) | + (vc4_state->feed_txp ? + SCALER_DISPCTRLX_ONESHOT : 0); + else + dispctrl |= VC4_SET_FIELD(mode->hdisplay, + SCALER5_DISPCTRLX_WIDTH) | + VC4_SET_FIELD(mode->vdisplay, + SCALER5_DISPCTRLX_HEIGHT) | + (vc4_state->feed_txp ? + SCALER5_DISPCTRLX_ONESHOT : 0); + + HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel), dispctrl);

/* When feeding the transposer block the pixelvalve is unneeded and * should not be enabled. diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 649bf47c80e5..1e226454c9a6 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -332,7 +332,11 @@ struct vc4_hvs { spinlock_t mm_lock;

struct drm_mm_node mitchell_netravali_filter; + struct debugfs_regset32 regset; + + /* HVS version 5 flag, therefore requires updated dlist structures */ + bool hvs5; };

struct vc4_plane { diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 5a43659da319..0fe4758de03a 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -230,6 +230,9 @@ static int vc4_hvs_bind(struct device *dev, struct device *master, void *data)

hvs->pdev = pdev;

+ if (of_device_is_compatible(pdev->dev.of_node, "brcm,bcm2711-hvs")) + hvs->hvs5 = true; + hvs->regs = vc4_ioremap_regs(pdev, 0); if (IS_ERR(hvs->regs)) return PTR_ERR(hvs->regs); @@ -238,7 +241,10 @@ static int vc4_hvs_bind(struct device *dev, struct device *master, void *data) hvs->regset.regs = hvs_regs; hvs->regset.nregs = ARRAY_SIZE(hvs_regs);

- hvs->dlist = hvs->regs + SCALER_DLIST_START; + if (!hvs->hvs5) + hvs->dlist = hvs->regs + SCALER_DLIST_START; + else + hvs->dlist = hvs->regs + SCALER5_DLIST_START;

spin_lock_init(&hvs->mm_lock);

@@ -256,7 +262,12 @@ static int vc4_hvs_bind(struct device *dev, struct device *master, void *data) * between planes when they don't overlap on the screen, but * for now we just allocate globally. */ - drm_mm_init(&hvs->lbm_mm, 0, 96 * 1024); + if (!hvs->hvs5) + /* 96kB */ + drm_mm_init(&hvs->lbm_mm, 0, 96 * 1024); + else + /* 70k words */ + drm_mm_init(&hvs->lbm_mm, 0, 70 * 2 * 1024);

/* Upload filter kernels. We only have the one for now, so we * keep it around for the lifetime of the driver. @@ -341,6 +352,7 @@ static int vc4_hvs_dev_remove(struct platform_device *pdev) }

static const struct of_device_id vc4_hvs_dt_match[] = { + { .compatible = "brcm,bcm2711-hvs" }, { .compatible = "brcm,bcm2835-hvs" }, {} }; diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 57a73a2e2e5c..1575c05e3106 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -32,45 +32,60 @@ static const struct hvs_format { u32 drm; /* DRM_FORMAT_* */ u32 hvs; /* HVS_FORMAT_* */ u32 pixel_order; + u32 pixel_order_hvs5; } hvs_formats[] = { { - .drm = DRM_FORMAT_XRGB8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888, + .drm = DRM_FORMAT_XRGB8888, + .hvs = HVS_PIXEL_FORMAT_RGBA8888, .pixel_order = HVS_PIXEL_ORDER_ABGR, + .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, }, { - .drm = DRM_FORMAT_ARGB8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888, + .drm = DRM_FORMAT_ARGB8888, + .hvs = HVS_PIXEL_FORMAT_RGBA8888, .pixel_order = HVS_PIXEL_ORDER_ABGR, + .pixel_order_hvs5 = HVS_PIXEL_ORDER_ARGB, }, { - .drm = DRM_FORMAT_ABGR8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888, + .drm = DRM_FORMAT_ABGR8888, + .hvs = HVS_PIXEL_FORMAT_RGBA8888, .pixel_order = HVS_PIXEL_ORDER_ARGB, + .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, }, { - .drm = DRM_FORMAT_XBGR8888, .hvs = HVS_PIXEL_FORMAT_RGBA8888, + .drm = DRM_FORMAT_XBGR8888, + .hvs = HVS_PIXEL_FORMAT_RGBA8888, .pixel_order = HVS_PIXEL_ORDER_ARGB, + .pixel_order_hvs5 = HVS_PIXEL_ORDER_ABGR, }, { - .drm = DRM_FORMAT_RGB565, .hvs = HVS_PIXEL_FORMAT_RGB565, + .drm = DRM_FORMAT_RGB565, + .hvs = HVS_PIXEL_FORMAT_RGB565, .pixel_order = HVS_PIXEL_ORDER_XRGB, }, { - .drm = DRM_FORMAT_BGR565, .hvs = HVS_PIXEL_FORMAT_RGB565, + .drm = DRM_FORMAT_BGR565, + .hvs = HVS_PIXEL_FORMAT_RGB565, .pixel_order = HVS_PIXEL_ORDER_XBGR, }, { - .drm = DRM_FORMAT_ARGB1555, .hvs = HVS_PIXEL_FORMAT_RGBA5551, + .drm = DRM_FORMAT_ARGB1555, + .hvs = HVS_PIXEL_FORMAT_RGBA5551, .pixel_order = HVS_PIXEL_ORDER_ABGR, }, { - .drm = DRM_FORMAT_XRGB1555, .hvs = HVS_PIXEL_FORMAT_RGBA5551, + .drm = DRM_FORMAT_XRGB1555, + .hvs = HVS_PIXEL_FORMAT_RGBA5551, .pixel_order = HVS_PIXEL_ORDER_ABGR, }, { - .drm = DRM_FORMAT_RGB888, .hvs = HVS_PIXEL_FORMAT_RGB888, + .drm = DRM_FORMAT_RGB888, + .hvs = HVS_PIXEL_FORMAT_RGB888, .pixel_order = HVS_PIXEL_ORDER_XRGB, }, { - .drm = DRM_FORMAT_BGR888, .hvs = HVS_PIXEL_FORMAT_RGB888, + .drm = DRM_FORMAT_BGR888, + .hvs = HVS_PIXEL_FORMAT_RGB888, .pixel_order = HVS_PIXEL_ORDER_XBGR, }, { @@ -781,35 +796,6 @@ static int vc4_plane_mode_set(struct drm_plane *plane, return -EINVAL; }

- /* Control word */ - vc4_dlist_write(vc4_state, - SCALER_CTL0_VALID | - (rotation & DRM_MODE_REFLECT_X ? SCALER_CTL0_HFLIP : 0) | - (rotation & DRM_MODE_REFLECT_Y ? SCALER_CTL0_VFLIP : 0) | - VC4_SET_FIELD(SCALER_CTL0_RGBA_EXPAND_ROUND, SCALER_CTL0_RGBA_EXPAND) | - (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) | - (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) | - VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | - (vc4_state->is_unity ? SCALER_CTL0_UNITY : 0) | - VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | - VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1)); - - /* Position Word 0: Image Positions and Alpha Value */ - vc4_state->pos0_offset = vc4_state->dlist_count; - vc4_dlist_write(vc4_state, - VC4_SET_FIELD(state->alpha >> 8, SCALER_POS0_FIXED_ALPHA) | - VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) | - VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y)); - - /* Position Word 1: Scaled Image Dimensions. */ - if (!vc4_state->is_unity) { - vc4_dlist_write(vc4_state, - VC4_SET_FIELD(vc4_state->crtc_w, - SCALER_POS1_SCL_WIDTH) | - VC4_SET_FIELD(vc4_state->crtc_h, - SCALER_POS1_SCL_HEIGHT)); - } - /* Don't waste cycles mixing with plane alpha if the set alpha * is opaque or there is no per-pixel alpha information. * In any case we use the alpha property value as the fixed alpha. @@ -817,20 +803,120 @@ static int vc4_plane_mode_set(struct drm_plane *plane, mix_plane_alpha = state->alpha != DRM_BLEND_ALPHA_OPAQUE && fb->format->has_alpha;

- /* Position Word 2: Source Image Size, Alpha */ - vc4_state->pos2_offset = vc4_state->dlist_count; - vc4_dlist_write(vc4_state, - VC4_SET_FIELD(fb->format->has_alpha ? - SCALER_POS2_ALPHA_MODE_PIPELINE : - SCALER_POS2_ALPHA_MODE_FIXED, - SCALER_POS2_ALPHA_MODE) | - (mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) | - (fb->format->has_alpha ? SCALER_POS2_ALPHA_PREMULT : 0) | - VC4_SET_FIELD(vc4_state->src_w[0], SCALER_POS2_WIDTH) | - VC4_SET_FIELD(vc4_state->src_h[0], SCALER_POS2_HEIGHT)); + if (!vc4->hvs->hvs5) { + /* Control word */ + vc4_dlist_write(vc4_state, + SCALER_CTL0_VALID | + (rotation & DRM_MODE_REFLECT_X ? SCALER_CTL0_HFLIP : 0) | + (rotation & DRM_MODE_REFLECT_Y ? SCALER_CTL0_VFLIP : 0) | + VC4_SET_FIELD(SCALER_CTL0_RGBA_EXPAND_ROUND, SCALER_CTL0_RGBA_EXPAND) | + (format->pixel_order << SCALER_CTL0_ORDER_SHIFT) | + (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) | + VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | + (vc4_state->is_unity ? SCALER_CTL0_UNITY : 0) | + VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | + VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1)); + + /* Position Word 0: Image Positions and Alpha Value */ + vc4_state->pos0_offset = vc4_state->dlist_count; + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(state->alpha >> 8, SCALER_POS0_FIXED_ALPHA) | + VC4_SET_FIELD(vc4_state->crtc_x, SCALER_POS0_START_X) | + VC4_SET_FIELD(vc4_state->crtc_y, SCALER_POS0_START_Y)); + + /* Position Word 1: Scaled Image Dimensions. */ + if (!vc4_state->is_unity) { + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(vc4_state->crtc_w, + SCALER_POS1_SCL_WIDTH) | + VC4_SET_FIELD(vc4_state->crtc_h, + SCALER_POS1_SCL_HEIGHT)); + } + + /* Position Word 2: Source Image Size, Alpha */ + vc4_state->pos2_offset = vc4_state->dlist_count; + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(fb->format->has_alpha ? + SCALER_POS2_ALPHA_MODE_PIPELINE : + SCALER_POS2_ALPHA_MODE_FIXED, + SCALER_POS2_ALPHA_MODE) | + (mix_plane_alpha ? SCALER_POS2_ALPHA_MIX : 0) | + (fb->format->has_alpha ? + SCALER_POS2_ALPHA_PREMULT : 0) | + VC4_SET_FIELD(vc4_state->src_w[0], + SCALER_POS2_WIDTH) | + VC4_SET_FIELD(vc4_state->src_h[0], + SCALER_POS2_HEIGHT)); + + /* Position Word 3: Context. Written by the HVS. */ + vc4_dlist_write(vc4_state, 0xc0c0c0c0); + + } else { + u32 hvs_pixel_order = format->pixel_order;

- /* Position Word 3: Context. Written by the HVS. */ - vc4_dlist_write(vc4_state, 0xc0c0c0c0); + if (format->pixel_order_hvs5) + hvs_pixel_order = format->pixel_order_hvs5; + + /* Control word */ + vc4_dlist_write(vc4_state, + SCALER_CTL0_VALID | + (hvs_pixel_order << SCALER_CTL0_ORDER_SHIFT) | + (hvs_format << SCALER_CTL0_PIXEL_FORMAT_SHIFT) | + VC4_SET_FIELD(tiling, SCALER_CTL0_TILING) | + (vc4_state->is_unity ? + SCALER5_CTL0_UNITY : 0) | + VC4_SET_FIELD(scl0, SCALER_CTL0_SCL0) | + VC4_SET_FIELD(scl1, SCALER_CTL0_SCL1) | + SCALER5_CTL0_ALPHA_EXPAND | + SCALER5_CTL0_RGB_EXPAND); + + /* Position Word 0: Image Positions and Alpha Value */ + vc4_state->pos0_offset = vc4_state->dlist_count; + vc4_dlist_write(vc4_state, + (rotation & DRM_MODE_REFLECT_Y ? + SCALER5_POS0_VFLIP : 0) | + VC4_SET_FIELD(vc4_state->crtc_x, + SCALER_POS0_START_X) | + (rotation & DRM_MODE_REFLECT_X ? + SCALER5_POS0_HFLIP : 0) | + VC4_SET_FIELD(vc4_state->crtc_y, + SCALER5_POS0_START_Y) + ); + + /* Control Word 2 */ + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(state->alpha >> 4, + SCALER5_CTL2_ALPHA) | + fb->format->has_alpha ? + SCALER5_CTL2_ALPHA_PREMULT : 0 | + (mix_plane_alpha ? + SCALER5_CTL2_ALPHA_MIX : 0) | + VC4_SET_FIELD(fb->format->has_alpha ? + SCALER5_CTL2_ALPHA_MODE_PIPELINE : + SCALER5_CTL2_ALPHA_MODE_FIXED, + SCALER5_CTL2_ALPHA_MODE) + ); + + /* Position Word 1: Scaled Image Dimensions. */ + if (!vc4_state->is_unity) { + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(vc4_state->crtc_w, + SCALER_POS1_SCL_WIDTH) | + VC4_SET_FIELD(vc4_state->crtc_h, + SCALER_POS1_SCL_HEIGHT)); + } + + /* Position Word 2: Source Image Size */ + vc4_state->pos2_offset = vc4_state->dlist_count; + vc4_dlist_write(vc4_state, + VC4_SET_FIELD(vc4_state->src_w[0], + SCALER5_POS2_WIDTH) | + VC4_SET_FIELD(vc4_state->src_h[0], + SCALER5_POS2_HEIGHT)); + + /* Position Word 3: Context. Written by the HVS. */ + vc4_dlist_write(vc4_state, 0xc0c0c0c0); + }

/* Pointer Word 0/1/2: RGB / Y / Cb / Cr Pointers @@ -1208,6 +1294,10 @@ static bool vc4_format_mod_supported(struct drm_plane *plane, default: return false; } + case DRM_FORMAT_RGBX1010102: + case DRM_FORMAT_BGRX1010102: + case DRM_FORMAT_RGBA1010102: + case DRM_FORMAT_BGRA1010102: case DRM_FORMAT_YUV422: case DRM_FORMAT_YVU422: case DRM_FORMAT_YUV420: diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h index b5a6b4cdd332..8a51baf681fe 100644 --- a/drivers/gpu/drm/vc4/vc4_regs.h +++ b/drivers/gpu/drm/vc4/vc4_regs.h @@ -328,6 +328,20 @@ # define SCALER_DISPCTRLX_HEIGHT_MASK VC4_MASK(11, 0) # define SCALER_DISPCTRLX_HEIGHT_SHIFT 0

+# define SCALER5_DISPCTRLX_WIDTH_MASK VC4_MASK(28, 16) +# define SCALER5_DISPCTRLX_WIDTH_SHIFT 16 +/* Generates a single frame when VSTART is seen and stops at the last + * pixel read from the FIFO. + */ +# define SCALER5_DISPCTRLX_ONESHOT BIT(15) +/* Processes a single context in the dlist and then task switch, + * instead of an entire line. + */ +# define SCALER5_DISPCTRLX_ONECTX_MASK VC4_MASK(14, 13) +# define SCALER5_DISPCTRLX_ONECTX_SHIFT 13 +# define SCALER5_DISPCTRLX_HEIGHT_MASK VC4_MASK(12, 0) +# define SCALER5_DISPCTRLX_HEIGHT_SHIFT 0 + #define SCALER_DISPBKGND0 0x00000044 # define SCALER_DISPBKGND_AUTOHS BIT(31) # define SCALER_DISPBKGND_INTERLACE BIT(30) @@ -461,6 +475,8 @@ #define SCALER_DLIST_START 0x00002000 #define SCALER_DLIST_SIZE 0x00004000

+#define SCALER5_DLIST_START 0x00004000 + #define VC4_HDMI_CORE_REV 0x000

#define VC4_HDMI_SW_RESET_CONTROL 0x004 @@ -826,6 +842,8 @@ enum hvs_pixel_format { HVS_PIXEL_FORMAT_PALETTE = 13, HVS_PIXEL_FORMAT_YUV444_RGB = 14, HVS_PIXEL_FORMAT_AYUV444_RGB = 15, + HVS_PIXEL_FORMAT_RGBA1010102 = 16, + HVS_PIXEL_FORMAT_YCBCR_10BIT = 17, };

/* Note: the LSB is the rightmost character shown. Only valid for @@ -880,6 +898,10 @@ enum hvs_pixel_format { #define SCALER_CTL0_RGBA_EXPAND_MSB 2 #define SCALER_CTL0_RGBA_EXPAND_ROUND 3

+#define SCALER5_CTL0_ALPHA_EXPAND BIT(12) + +#define SCALER5_CTL0_RGB_EXPAND BIT(11) + #define SCALER_CTL0_SCL1_MASK VC4_MASK(10, 8) #define SCALER_CTL0_SCL1_SHIFT 8

@@ -897,10 +919,13 @@ enum hvs_pixel_format {

/* Set to indicate no scaling. */ #define SCALER_CTL0_UNITY BIT(4) +#define SCALER5_CTL0_UNITY BIT(15)

#define SCALER_CTL0_PIXEL_FORMAT_MASK VC4_MASK(3, 0) #define SCALER_CTL0_PIXEL_FORMAT_SHIFT 0

+#define SCALER5_CTL0_PIXEL_FORMAT_MASK VC4_MASK(4, 0) + #define SCALER_POS0_FIXED_ALPHA_MASK VC4_MASK(31, 24) #define SCALER_POS0_FIXED_ALPHA_SHIFT 24

@@ -910,12 +935,48 @@ enum hvs_pixel_format { #define SCALER_POS0_START_X_MASK VC4_MASK(11, 0) #define SCALER_POS0_START_X_SHIFT 0

+#define SCALER5_POS0_START_Y_MASK VC4_MASK(27, 16) +#define SCALER5_POS0_START_Y_SHIFT 16 + +#define SCALER5_POS0_START_X_MASK VC4_MASK(13, 0) +#define SCALER5_POS0_START_X_SHIFT 0 + +#define SCALER5_POS0_VFLIP BIT(31) +#define SCALER5_POS0_HFLIP BIT(15) + +#define SCALER5_CTL2_ALPHA_MODE_MASK VC4_MASK(31, 30) +#define SCALER5_CTL2_ALPHA_MODE_SHIFT 30 +#define SCALER5_CTL2_ALPHA_MODE_PIPELINE 0 +#define SCALER5_CTL2_ALPHA_MODE_FIXED 1 +#define SCALER5_CTL2_ALPHA_MODE_FIXED_NONZERO 2 +#define SCALER5_CTL2_ALPHA_MODE_FIXED_OVER_0x07 3 + +#define SCALER5_CTL2_ALPHA_PREMULT BIT(29) + +#define SCALER5_CTL2_ALPHA_MIX BIT(28) + +#define SCALER5_CTL2_ALPHA_LOC BIT(25) + +#define SCALER5_CTL2_MAP_SEL_MASK VC4_MASK(18, 17) +#define SCALER5_CTL2_MAP_SEL_SHIFT 17 + +#define SCALER5_CTL2_GAMMA BIT(16) + +#define SCALER5_CTL2_ALPHA_MASK VC4_MASK(15, 4) +#define SCALER5_CTL2_ALPHA_SHIFT 4 + #define SCALER_POS1_SCL_HEIGHT_MASK VC4_MASK(27, 16) #define SCALER_POS1_SCL_HEIGHT_SHIFT 16

#define SCALER_POS1_SCL_WIDTH_MASK VC4_MASK(11, 0) #define SCALER_POS1_SCL_WIDTH_SHIFT 0

+#define SCALER5_POS1_SCL_HEIGHT_MASK VC4_MASK(28, 16) +#define SCALER5_POS1_SCL_HEIGHT_SHIFT 16 + +#define SCALER5_POS1_SCL_WIDTH_MASK VC4_MASK(12, 0) +#define SCALER5_POS1_SCL_WIDTH_SHIFT 0 + #define SCALER_POS2_ALPHA_MODE_MASK VC4_MASK(31, 30) #define SCALER_POS2_ALPHA_MODE_SHIFT 30 #define SCALER_POS2_ALPHA_MODE_PIPELINE 0 @@ -931,6 +992,12 @@ enum hvs_pixel_format { #define SCALER_POS2_WIDTH_MASK VC4_MASK(11, 0) #define SCALER_POS2_WIDTH_SHIFT 0

+#define SCALER5_POS2_HEIGHT_MASK VC4_MASK(28, 16) +#define SCALER5_POS2_HEIGHT_SHIFT 16 + +#define SCALER5_POS2_WIDTH_MASK VC4_MASK(12, 0) +#define SCALER5_POS2_WIDTH_SHIFT 0 + /* Color Space Conversion words. Some values are S2.8 signed * integers, except that the 2 integer bits map as {0x0: 0, 0x1: 1, * 0x2: 2, 0x3: -1}

So far the plane creation was done when each CRTC was bound, and those planes were only tied to the CRTC that was registering them.

This causes two main issues: - The planes in the vc4 hardware are actually not tied to any CRTC, but can be used with every combination

- More importantly, so far, we allocate 10 planes per CRTC, with 3 CRTCs. However, the next generation of hardware will have 5 CRTCs, putting us well above the maximum of 32 planes currently allowed by DRM.

This patch is the first one in a series of patches that will take down both of these issues so that we can support the next generation of hardware while keeping a good amount of planes.

We start by changing the way the planes are registered to first registering the primary planes for each CRTC in the CRTC bind function as we used to, but moving the overlay and cursor creation to the main driver bind function, after all the CRTCs have been bound.

This will slightly change the ID order of the planes, since the primary planes of all CRTCs will be first, and then a pattern of 8 overlays, 1 cursor plane for each CRTC.

This shouldn't cause any trouble since the ordering between the planes is preserved though.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 4 ---- drivers/gpu/drm/vc4/vc4_drv.c | 7 +++++++ 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 29c72c322c6b..2131164779dd 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -1192,10 +1192,6 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) */ drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size);

- ret = vc4_plane_create_additional_planes(drm, crtc); - if (ret) - goto err_destroy_planes; - vc4_crtc_get_cob_allocation(vc4_crtc);

CRTC_WRITE(PV_INTEN, 0); diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index d7f554a6f0ed..daf07a61a7b5 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -250,6 +250,7 @@ static int vc4_drm_bind(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm; + struct drm_crtc *crtc; struct vc4_dev *vc4; struct device_node *node; int ret = 0; @@ -288,6 +289,12 @@ static int vc4_drm_bind(struct device *dev) if (ret) goto gem_destroy;

+ drm_for_each_crtc(crtc, drm) { + ret = vc4_plane_create_additional_planes(drm, crtc); + if (ret) + continue; + } + drm_fb_helper_remove_conflicting_framebuffers(NULL, "vc4drmfb", false);

ret = vc4_kms_load(drm);

Now that we have everything in place, we can now register all the overlay planes that can be assigned to all the CRTCs.

This has two side effects:

- The number of overlay planes is reduced from 24 to 8. This is temporary and will be increased again in the next patch.

- The ID of the various planes is changed again, and we will now have all the primary planes, then all the overlay planes and finally the cursor planes. This shouldn't cause any issue since the ordering between primary, overlay and cursor planes is preserved.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_plane.c | 35 +++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 824c188980b0..5335123ae2a0 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -1378,26 +1378,27 @@ int vc4_plane_create_additional_planes(struct drm_device *drm) struct drm_crtc *crtc; unsigned int i;

- drm_for_each_crtc(crtc, drm) { - /* Set up some arbitrary number of planes. We're not limited - * by a set number of physical registers, just the space in - * the HVS (16k) and how small an plane can be (28 bytes). - * However, each plane we set up takes up some memory, and - * increases the cost of looping over planes, which atomic - * modesetting does quite a bit. As a result, we pick a - * modest number of planes to expose, that should hopefully - * still cover any sane usecase. - */ - for (i = 0; i < 8; i++) { - struct drm_plane *plane = - vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY); + /* Set up some arbitrary number of planes. We're not limited + * by a set number of physical registers, just the space in + * the HVS (16k) and how small an plane can be (28 bytes). + * However, each plane we set up takes up some memory, and + * increases the cost of looping over planes, which atomic + * modesetting does quite a bit. As a result, we pick a + * modest number of planes to expose, that should hopefully + * still cover any sane usecase. + */ + for (i = 0; i < 8; i++) { + struct drm_plane *plane = + vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);

- if (IS_ERR(plane)) - continue; + if (IS_ERR(plane)) + continue;

- plane->possible_crtcs = drm_crtc_mask(crtc); - } + plane->possible_crtcs = + GENMASK(drm->mode_config.num_crtc - 1, 0); + }

+ drm_for_each_crtc(crtc, drm) { /* Set up the legacy cursor after overlay initialization, * since we overlay planes on the CRTC in the order they were * initialized.

Let's now create more planes that can be affected to all the CRTCs.

vc4 has 3 CRTCs, 1 primary and 1 cursor each, and was having 24 (8 planes per CRTC) overlays.

However, vc5 has 5 CRTCs, so keeping the same logic would put us at 50 planes which is well above the 32 planes limit imposed by DRM.

Using 16 seems like a good tradeoff between staying under 32 and yet providing enough planes.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_plane.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 5335123ae2a0..c190ccc42c51 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -1387,7 +1387,7 @@ int vc4_plane_create_additional_planes(struct drm_device *drm) * modest number of planes to expose, that should hopefully * still cover any sane usecase. */ - for (i = 0; i < 8; i++) { + for (i = 0; i < 16; i++) { struct drm_plane *plane = vc4_plane_init(drm, DRM_PLANE_TYPE_OVERLAY);

of_device_get_match_data allow to simplify a bit the retrieval of the data associated to the pixelvalve compatible. Let's use it.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 9fdb0ccc4a28..b668bb8d060c 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -1142,10 +1142,10 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = dev_get_drvdata(master); + const struct vc4_crtc_data *pv_data; struct vc4_crtc *vc4_crtc; struct drm_crtc *crtc; struct drm_plane *primary_plane, *destroy_plane, *temp; - const struct of_device_id *match; int ret, i;

vc4_crtc = devm_kzalloc(dev, sizeof(*vc4_crtc), GFP_KERNEL); @@ -1153,10 +1153,10 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) return -ENOMEM; crtc = &vc4_crtc->base;

- match = of_match_device(vc4_crtc_dt_match, dev); - if (!match) + pv_data = of_device_get_match_data(dev); + if (!pv_data) return -ENODEV; - vc4_crtc->data = match->data; + vc4_crtc->data = pv_data; vc4_crtc->pdev = pdev;

vc4_crtc->regs = vc4_ioremap_regs(pdev, 0); @@ -1211,7 +1211,7 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data)

platform_set_drvdata(pdev, vc4_crtc);

- vc4_debugfs_add_regset32(drm, vc4_crtc->data->debugfs_name, + vc4_debugfs_add_regset32(drm, pv_data->debugfs_name, &vc4_crtc->regset);

return 0;

Some of the HDMI pixelvalves in vc5 output two pixels per clock cycle. Let's put the number of pixel output per clock cycle in the CRTC data and update the various calculations to reflect that.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 17 ++++++++++------- drivers/gpu/drm/vc4/vc4_drv.h | 3 +++ 2 files changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index db056dfe14df..a3fc7dd97446 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -282,6 +282,7 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) bool is_dsi = (vc4_encoder->type == VC4_ENCODER_TYPE_DSI0 || vc4_encoder->type == VC4_ENCODER_TYPE_DSI1); u32 format = is_dsi ? PV_CONTROL_FORMAT_DSIV_24 : PV_CONTROL_FORMAT_24; + u8 ppc = vc4_crtc->data->pixels_per_clock;

/* Reset the PV fifo. */ CRTC_WRITE(PV_CONTROL, 0); @@ -289,17 +290,16 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) CRTC_WRITE(PV_CONTROL, 0);

CRTC_WRITE(PV_HORZA, - VC4_SET_FIELD((mode->htotal - - mode->hsync_end) * pixel_rep, + VC4_SET_FIELD((mode->htotal - mode->hsync_end) * pixel_rep / ppc, PV_HORZA_HBP) | - VC4_SET_FIELD((mode->hsync_end - - mode->hsync_start) * pixel_rep, + VC4_SET_FIELD((mode->hsync_end - mode->hsync_start) * pixel_rep / ppc, PV_HORZA_HSYNC)); + CRTC_WRITE(PV_HORZB, - VC4_SET_FIELD((mode->hsync_start - - mode->hdisplay) * pixel_rep, + VC4_SET_FIELD((mode->hsync_start - mode->hdisplay) * pixel_rep / ppc, PV_HORZB_HFP) | - VC4_SET_FIELD(mode->hdisplay * pixel_rep, PV_HORZB_HACTIVE)); + VC4_SET_FIELD(mode->hdisplay * pixel_rep / ppc, + PV_HORZB_HACTIVE));

CRTC_WRITE(PV_VERTA, VC4_SET_FIELD(mode->crtc_vtotal - mode->crtc_vsync_end, @@ -1040,6 +1040,7 @@ static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { static const struct vc4_crtc_data bcm2835_pv0_data = { .hvs_channel = 0, .debugfs_name = "crtc0_regs", + .pixels_per_clock = 1, .encoder_types = { [PV_CONTROL_CLK_SELECT_DSI] = VC4_ENCODER_TYPE_DSI0, [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_DPI, @@ -1049,6 +1050,7 @@ static const struct vc4_crtc_data bcm2835_pv0_data = { static const struct vc4_crtc_data bcm2835_pv1_data = { .hvs_channel = 2, .debugfs_name = "crtc1_regs", + .pixels_per_clock = 1, .encoder_types = { [PV_CONTROL_CLK_SELECT_DSI] = VC4_ENCODER_TYPE_DSI1, [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_SMI, @@ -1058,6 +1060,7 @@ static const struct vc4_crtc_data bcm2835_pv1_data = { static const struct vc4_crtc_data bcm2835_pv2_data = { .hvs_channel = 1, .debugfs_name = "crtc2_regs", + .pixels_per_clock = 1, .encoder_types = { [PV_CONTROL_CLK_SELECT_DPI_SMI_HDMI] = VC4_ENCODER_TYPE_HDMI, [PV_CONTROL_CLK_SELECT_VEC] = VC4_ENCODER_TYPE_VEC, diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 329185a53a79..8c0f714f557b 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -453,6 +453,9 @@ struct vc4_crtc_data { /* Which channel of the HVS this pixelvalve sources from. */ int hvs_channel;

+ /* Number of pixels output per clock period */ + u8 pixels_per_clock; + enum vc4_encoder_type encoder_types[4]; const char *debugfs_name; };

The hvs_latency_pix variable doesn't need to be a variable and can just be defined.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index fd248ee546e8..8dbf06cdb069 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -44,6 +44,8 @@ #include "vc4_drv.h" #include "vc4_regs.h"

+#define HVS_FIFO_LATENCY_PIX 6 + #define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset)) #define CRTC_READ(offset) readl(vc4_crtc->regs + (offset))

@@ -231,18 +233,17 @@ vc4_crtc_update_gamma_lut(struct drm_crtc *crtc) static u32 vc4_get_fifo_full_level(u32 format) { static const u32 fifo_len_bytes = 64; - static const u32 hvs_latency_pix = 6;

switch (format) { case PV_CONTROL_FORMAT_DSIV_16: case PV_CONTROL_FORMAT_DSIC_16: - return fifo_len_bytes - 2 * hvs_latency_pix; + return fifo_len_bytes - 2 * HVS_FIFO_LATENCY_PIX; case PV_CONTROL_FORMAT_DSIV_18: return fifo_len_bytes - 14; case PV_CONTROL_FORMAT_24: case PV_CONTROL_FORMAT_DSIV_24: default: - return fifo_len_bytes - 3 * hvs_latency_pix; + return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX; } }

The COB allocation depends on the HVS channel used for a given pixelvalve.

While the channel allocation was entirely static in vc4, vc5 changes that and at bind time, a pixelvalve can be assigned to multiple HVS channels.

Let's prepare that rework by allocating the COB when it's actually needed.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 36 ++++++++++++++++------------------- drivers/gpu/drm/vc4/vc4_drv.h | 2 +-- 2 files changed, 17 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 5e1d234f3c8e..d58f881649d5 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -65,6 +65,20 @@ static const struct debugfs_reg32 crtc_regs[] = { VC4_REG32(PV_HACT_ACT), };

+static unsigned int +vc4_crtc_get_cob_allocation(struct vc4_dev *vc4, unsigned int channel) +{ + u32 dispbase = HVS_READ(SCALER_DISPBASEX(channel)); + /* Top/base are supposed to be 4-pixel aligned, but the + * Raspberry Pi firmware fills the low bits (which are + * presumably ignored). + */ + u32 top = VC4_GET_FIELD(dispbase, SCALER_DISPBASEX_TOP) & ~3; + u32 base = VC4_GET_FIELD(dispbase, SCALER_DISPBASEX_BASE) & ~3; + + return top - base + 4; +} + static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, bool in_vblank_irq, int *vpos, int *hpos, @@ -74,6 +88,7 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + unsigned int cob_size; u32 val; int fifo_lines; int vblank_lines; @@ -109,8 +124,9 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, *hpos += mode->crtc_htotal / 2; }

+ cob_size = vc4_crtc_get_cob_allocation(vc4, vc4_crtc->channel); /* This is the offset we need for translating hvs -> pv scanout pos. */ - fifo_lines = vc4_crtc->cob_size / mode->crtc_hdisplay; + fifo_lines = cob_size / mode->crtc_hdisplay;

if (fifo_lines > 0) ret = true; @@ -1106,22 +1122,6 @@ static void vc4_set_crtc_possible_masks(struct drm_device *drm, } }

-static void -vc4_crtc_get_cob_allocation(struct vc4_crtc *vc4_crtc) -{ - struct drm_device *drm = vc4_crtc->base.dev; - struct vc4_dev *vc4 = to_vc4_dev(drm); - u32 dispbase = HVS_READ(SCALER_DISPBASEX(vc4_crtc->channel)); - /* Top/base are supposed to be 4-pixel aligned, but the - * Raspberry Pi firmware fills the low bits (which are - * presumably ignored). - */ - u32 top = VC4_GET_FIELD(dispbase, SCALER_DISPBASEX_TOP) & ~3; - u32 base = VC4_GET_FIELD(dispbase, SCALER_DISPBASEX_BASE) & ~3; - - vc4_crtc->cob_size = top - base + 4; -} - static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); @@ -1176,8 +1176,6 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) */ drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size);

- vc4_crtc_get_cob_allocation(vc4_crtc); - CRTC_WRITE(PV_INTEN, 0); CRTC_WRITE(PV_INTSTAT, PV_INT_VFP_START); ret = devm_request_irq(dev, platform_get_irq(pdev, 0), diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 8c0f714f557b..6c4b78b71446 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -475,8 +475,6 @@ struct vc4_crtc { u8 lut_r[256]; u8 lut_g[256]; u8 lut_b[256]; - /* Size in pixels of the COB memory allocated to this CRTC. */ - u32 cob_size;

struct drm_pending_vblank_event *event;

The vc4_crtc_handle_page_flip already has a local variable holding the value of vc4_crtc->channel, so let's use it instead.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 14e3a962d8a7..15c72afb226f 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -813,7 +813,7 @@ static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc) * the CRTC and encoder already reconfigured, leading to * underruns. This can be seen when reconfiguring the CRTC. */ - vc4_hvs_unmask_underrun(dev, vc4_crtc->channel); + vc4_hvs_unmask_underrun(dev, chan); } spin_unlock_irqrestore(&dev->event_lock, flags); }

The HVS found in the BCM2711 has 6 outputs and 3 FIFOs, with each output being connected to a pixelvalve, and some muxing between the FIFOs and outputs.

Any output cannot feed from any FIFO though, and they all have a bunch of constraints.

In order to support this, let's store the possible FIFOs each output can be assigned to in the vc4_crtc_data, and use that information at atomic_check time to iterate over all the CRTCs enabled and assign them FIFOs.

The channel assigned is then set in the vc4_crtc_state so that the rest of the driver can use it.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 37 +++++---- drivers/gpu/drm/vc4/vc4_drv.h | 7 +- drivers/gpu/drm/vc4/vc4_kms.c | 142 ++++++++++++++++++++++++++++++++-- drivers/gpu/drm/vc4/vc4_regs.h | 10 ++- 4 files changed, 172 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 580b37ad514d..a6c3f2f907bd 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -88,6 +88,7 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state); unsigned int cob_size; u32 val; int fifo_lines; @@ -104,7 +105,7 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, * Read vertical scanline which is currently composed for our * pixelvalve by the HVS, and also the scaler status. */ - val = HVS_READ(SCALER_DISPSTATX(vc4_crtc->channel)); + val = HVS_READ(SCALER_DISPSTATX(vc4_crtc_state->assigned_channel));

/* Get optional system timestamp after query. */ if (etime) @@ -124,7 +125,7 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, *hpos += mode->crtc_htotal / 2; }

- cob_size = vc4_crtc_get_cob_allocation(vc4, vc4_crtc->channel); + cob_size = vc4_crtc_get_cob_allocation(vc4, vc4_crtc_state->assigned_channel); /* This is the offset we need for translating hvs -> pv scanout pos. */ fifo_lines = cob_size / mode->crtc_hdisplay;

@@ -211,6 +212,7 @@ vc4_crtc_lut_load(struct drm_crtc *crtc) struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state); u32 i;

/* The LUT memory is laid out with each HVS channel in order, @@ -219,7 +221,7 @@ vc4_crtc_lut_load(struct drm_crtc *crtc) */ HVS_WRITE(SCALER_GAMADDR, SCALER_GAMADDR_AUTOINC | - (vc4_crtc->channel * 3 * crtc->gamma_size)); + (vc4_crtc_state->assigned_channel * 3 * crtc->gamma_size));

for (i = 0; i < crtc->gamma_size; i++) HVS_WRITE(SCALER_GAMDATA, vc4_crtc->lut_r[i]); @@ -392,7 +394,7 @@ static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc) drm_print_regset32(&p, &vc4_crtc->regset); }

- if (vc4_crtc->channel == 2) { + if (vc4_crtc->data->hvs_output == 2) { u32 dispctrl; u32 dsp3_mux;

@@ -419,7 +421,7 @@ static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc) if (!vc4_state->feed_txp) vc4_crtc_config_pv(crtc);

- HVS_WRITE(SCALER_DISPBKGNDX(vc4_crtc->channel), + HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), SCALER_DISPBKGND_AUTOHS | SCALER_DISPBKGND_GAMMA | (interlace ? SCALER_DISPBKGND_INTERLACE : 0)); @@ -451,7 +453,8 @@ static void vc4_crtc_atomic_disable(struct drm_crtc *crtc, struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); - u32 chan = vc4_crtc->channel; + struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(old_state); + u32 chan = vc4_crtc_state->assigned_channel; int ret; require_hvs_enabled(dev);

@@ -530,12 +533,12 @@ static void vc4_crtc_update_dlist(struct drm_crtc *crtc) crtc->state->event = NULL; }

- HVS_WRITE(SCALER_DISPLISTX(vc4_crtc->channel), + HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel), vc4_state->mm.start);

spin_unlock_irqrestore(&dev->event_lock, flags); } else { - HVS_WRITE(SCALER_DISPLISTX(vc4_crtc->channel), + HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel), vc4_state->mm.start); } } @@ -584,7 +587,7 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, (vc4_state->feed_txp ? SCALER5_DISPCTRLX_ONESHOT : 0);

- HVS_WRITE(SCALER_DISPCTRLX(vc4_crtc->channel), dispctrl); + HVS_WRITE(SCALER_DISPCTRLX(vc4_state->assigned_channel), dispctrl);

/* When feeding the transposer block the pixelvalve is unneeded and * should not be enabled. @@ -700,7 +703,6 @@ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc, { struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); struct drm_plane *plane; struct vc4_plane_state *vc4_plane_state; @@ -742,8 +744,8 @@ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc, /* This sets a black background color fill, as is the case * with other DRM drivers. */ - HVS_WRITE(SCALER_DISPBKGNDX(vc4_crtc->channel), - HVS_READ(SCALER_DISPBKGNDX(vc4_crtc->channel)) | + HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), + HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel)) | SCALER_DISPBKGND_FILL);

/* Only update DISPLIST if the CRTC was already running and is not @@ -757,7 +759,7 @@ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc, vc4_crtc_update_dlist(crtc);

if (crtc->state->color_mgmt_changed) { - u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(vc4_crtc->channel)); + u32 dispbkgndx = HVS_READ(SCALER_DISPBKGNDX(vc4_state->assigned_channel));

if (crtc->state->gamma_lut) { vc4_crtc_update_gamma_lut(crtc); @@ -769,7 +771,7 @@ static void vc4_crtc_atomic_flush(struct drm_crtc *crtc, */ dispbkgndx &= ~SCALER_DISPBKGND_GAMMA; } - HVS_WRITE(SCALER_DISPBKGNDX(vc4_crtc->channel), dispbkgndx); + HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), dispbkgndx); }

if (debug_dump_regs) { @@ -800,7 +802,7 @@ static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc) struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); - u32 chan = vc4_crtc->channel; + u32 chan = vc4_state->assigned_channel; unsigned long flags;

spin_lock_irqsave(&dev->event_lock, flags); @@ -999,6 +1001,7 @@ static struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc) old_vc4_state = to_vc4_crtc_state(crtc->state); vc4_state->feed_txp = old_vc4_state->feed_txp; vc4_state->margins = old_vc4_state->margins; + vc4_state->assigned_channel = old_vc4_state->assigned_channel;

__drm_atomic_helper_crtc_duplicate_state(crtc, &vc4_state->base); return &vc4_state->base; @@ -1060,6 +1063,7 @@ static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { };

static const struct vc4_crtc_data bcm2835_pv0_data = { + .hvs_available_channels = BIT(0), .hvs_output = 0, .debugfs_name = "crtc0_regs", .pixels_per_clock = 1, @@ -1070,6 +1074,7 @@ static const struct vc4_crtc_data bcm2835_pv0_data = { };

static const struct vc4_crtc_data bcm2835_pv1_data = { + .hvs_available_channels = BIT(2), .hvs_output = 2, .debugfs_name = "crtc1_regs", .pixels_per_clock = 1, @@ -1080,6 +1085,7 @@ static const struct vc4_crtc_data bcm2835_pv1_data = { };

static const struct vc4_crtc_data bcm2835_pv2_data = { + .hvs_available_channels = BIT(1), .hvs_output = 1, .debugfs_name = "crtc2_regs", .pixels_per_clock = 1, @@ -1171,7 +1177,6 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) drm_crtc_init_with_planes(drm, crtc, primary_plane, NULL, &vc4_crtc_funcs, NULL); drm_crtc_helper_add(crtc, &vc4_crtc_helper_funcs); - vc4_crtc->channel = vc4_crtc->data->hvs_output; drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r)); drm_crtc_enable_color_mgmt(crtc, 0, false, crtc->gamma_size);

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 9d120aae4af9..73156a53822f 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -450,6 +450,9 @@ to_vc4_encoder(struct drm_encoder *encoder) }

struct vc4_crtc_data { + /* Which channels of the HVS can the output source from */ + unsigned int hvs_available_channels; + /* Which output of the HVS this pixelvalve sources from. */ int hvs_output;

@@ -469,9 +472,6 @@ struct vc4_crtc { /* Timestamp at start of vblank irq - unaffected by lock delays. */ ktime_t t_vblank;

- /* Which HVS channel we're using for our CRTC. */ - int channel; - u8 lut_r[256]; u8 lut_g[256]; u8 lut_b[256]; @@ -493,6 +493,7 @@ struct vc4_crtc_state { struct drm_mm_node mm; bool feed_txp; bool txp_armed; + unsigned int assigned_channel;

struct { unsigned int left; diff --git a/drivers/gpu/drm/vc4/vc4_kms.c b/drivers/gpu/drm/vc4/vc4_kms.c index 29b75b60d858..db00625c61dd 100644 --- a/drivers/gpu/drm/vc4/vc4_kms.c +++ b/drivers/gpu/drm/vc4/vc4_kms.c @@ -11,6 +11,8 @@ * crtc, HDMI encoder). */

+#include <linux/bitfield.h> +#include <linux/bitops.h> #include <linux/clk.h>

#include <drm/drm_atomic.h> @@ -146,6 +148,72 @@ vc4_ctm_commit(struct vc4_dev *vc4, struct drm_atomic_state *state) VC4_SET_FIELD(ctm_state->fifo, SCALER_OLEDOFFS_DISPFIFO)); }

+static void vc4_hvs_pv_muxing_commit(struct vc4_dev *vc4, + struct drm_atomic_state *state) +{ + struct drm_crtc_state *crtc_state; + struct drm_crtc *crtc; + unsigned char dsp2_mux = 0; + unsigned char dsp3_mux = 3; + unsigned char dsp4_mux = 3; + unsigned char dsp5_mux = 3; + unsigned int i; + u32 reg; + + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { + struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc_state); + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + + if (!crtc_state->active) + continue; + + switch (vc4_crtc->data->hvs_output) { + case 2: + dsp2_mux = (vc4_state->assigned_channel == 2) ? 0 : 1; + break; + + case 3: + dsp3_mux = vc4_state->assigned_channel; + break; + + case 4: + dsp4_mux = vc4_state->assigned_channel; + break; + + case 5: + dsp5_mux = vc4_state->assigned_channel; + break; + + default: + break; + } + } + + reg = HVS_READ(SCALER_DISPECTRL); + if (FIELD_GET(SCALER_DISPECTRL_DSP2_MUX_MASK, reg) != dsp2_mux) + HVS_WRITE(SCALER_DISPECTRL, + (reg & ~SCALER_DISPECTRL_DSP2_MUX_MASK) | + VC4_SET_FIELD(dsp2_mux, SCALER_DISPECTRL_DSP2_MUX)); + + reg = HVS_READ(SCALER_DISPCTRL); + if (FIELD_GET(SCALER_DISPCTRL_DSP3_MUX_MASK, reg) != dsp3_mux) + HVS_WRITE(SCALER_DISPCTRL, + (reg & ~SCALER_DISPCTRL_DSP3_MUX_MASK) | + VC4_SET_FIELD(dsp3_mux, SCALER_DISPCTRL_DSP3_MUX)); + + reg = HVS_READ(SCALER_DISPEOLN); + if (FIELD_GET(SCALER_DISPEOLN_DSP4_MUX_MASK, reg) != dsp4_mux) + HVS_WRITE(SCALER_DISPEOLN, + (reg & ~SCALER_DISPEOLN_DSP4_MUX_MASK) | + VC4_SET_FIELD(dsp4_mux, SCALER_DISPEOLN_DSP4_MUX)); + + reg = HVS_READ(SCALER_DISPDITHER); + if (FIELD_GET(SCALER_DISPDITHER_DSP5_MUX_MASK, reg) != dsp5_mux) + HVS_WRITE(SCALER_DISPDITHER, + (reg & ~SCALER_DISPDITHER_DSP5_MUX_MASK) | + VC4_SET_FIELD(dsp5_mux, SCALER_DISPDITHER_DSP5_MUX)); +} + static void vc4_atomic_complete_commit(struct drm_atomic_state *state) { @@ -156,11 +224,15 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state) int i;

for (i = 0; i < dev->mode_config.num_crtc; i++) { - if (!state->crtcs[i].ptr || !state->crtcs[i].commit) + struct __drm_crtcs_state *_state = &state->crtcs[i]; + struct vc4_crtc_state *vc4_crtc_state; + + if (!_state->ptr || !_state->commit) continue;

- vc4_crtc = to_vc4_crtc(state->crtcs[i].ptr); - vc4_hvs_mask_underrun(dev, vc4_crtc->channel); + vc4_crtc = to_vc4_crtc(_state->ptr); + vc4_crtc_state = to_vc4_crtc_state(_state->state); + vc4_hvs_mask_underrun(dev, vc4_crtc_state->assigned_channel); }

clk_set_rate(hvs->core_clk, 500000000); @@ -172,6 +244,7 @@ vc4_atomic_complete_commit(struct drm_atomic_state *state) drm_atomic_helper_commit_modeset_disables(dev, state);

vc4_ctm_commit(vc4, state); + vc4_hvs_pv_muxing_commit(vc4, state);

drm_atomic_helper_commit_planes(dev, state, 0);

@@ -381,8 +454,11 @@ vc4_ctm_atomic_check(struct drm_device *dev, struct drm_atomic_state *state)

/* CTM is being enabled or the matrix changed. */ if (new_crtc_state->ctm) { + struct vc4_crtc_state *vc4_crtc_state = + to_vc4_crtc_state(new_crtc_state); + /* fifo is 1-based since 0 disables CTM. */ - int fifo = to_vc4_crtc(crtc)->channel + 1; + int fifo = vc4_crtc_state->assigned_channel + 1;

/* Check userland isn't trying to turn on CTM for more * than one CRTC at a time. @@ -495,10 +571,66 @@ static const struct drm_private_state_funcs vc4_load_tracker_state_funcs = { .atomic_destroy_state = vc4_load_tracker_destroy_state, };

+#define NUM_OUTPUTS 6 +#define NUM_CHANNELS 3 + static int vc4_atomic_check(struct drm_device *dev, struct drm_atomic_state *state) { - int ret; + unsigned long unassigned_channels = GENMASK(NUM_CHANNELS - 1, 0); + struct drm_crtc_state *crtc_state; + struct drm_crtc *crtc; + int i, ret; + + for_each_new_crtc_in_state(state, crtc, crtc_state, i) { + struct vc4_crtc_state *vc4_crtc_state = + to_vc4_crtc_state(crtc_state); + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + bool is_assigned = false; + unsigned int channel; + + if (!crtc_state->active) + continue; + + /* + * The problem we have to solve here is that we have + * up to 7 encoders, connected to up to 6 CRTCs. + * + * Those CRTCs, depending on the instance, can be + * routed to 1, 2 or 3 HVS FIFOs, and we need to set + * the change the muxing between FIFOs and outputs in + * the HVS accordingly. + * + * It would be pretty hard to come up with an + * algorithm that would generically solve + * this. However, the current routing trees we support + * allow us to simplify a bit the problem. + * + * Indeed, with the current supported layouts, if we + * try to assign in the ascending crtc index order the + * FIFOs, we can't fall into the situation where an + * earlier CRTC that had multiple routes is assigned + * one that was the only option for a later CRTC. + * + * If the layout changes and doesn't give us that in + * the future, we will need to have something smarter, + * but it works so far. + */ + for_each_set_bit(channel, &unassigned_channels, + sizeof(unassigned_channels)) { + + if (!(BIT(channel) & vc4_crtc->data->hvs_available_channels)) + continue; + + vc4_crtc_state->assigned_channel = channel; + unassigned_channels &= ~BIT(channel); + is_assigned = true; + break; + } + + if (!is_assigned) + return -EINVAL; + }

ret = vc4_ctm_atomic_check(dev, state); if (ret < 0) diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h index 8a51baf681fe..b96ebbb1354b 100644 --- a/drivers/gpu/drm/vc4/vc4_regs.h +++ b/drivers/gpu/drm/vc4/vc4_regs.h @@ -287,9 +287,19 @@

#define SCALER_DISPID 0x00000008 #define SCALER_DISPECTRL 0x0000000c +# define SCALER_DISPECTRL_DSP2_MUX_SHIFT 31 +# define SCALER_DISPECTRL_DSP2_MUX_MASK VC4_MASK(31, 31) + #define SCALER_DISPPROF 0x00000010 + #define SCALER_DISPDITHER 0x00000014 +# define SCALER_DISPDITHER_DSP5_MUX_SHIFT 30 +# define SCALER_DISPDITHER_DSP5_MUX_MASK VC4_MASK(31, 30) + #define SCALER_DISPEOLN 0x00000018 +# define SCALER_DISPEOLN_DSP4_MUX_SHIFT 30 +# define SCALER_DISPEOLN_DSP4_MUX_MASK VC4_MASK(31, 30) + #define SCALER_DISPLIST0 0x00000020 #define SCALER_DISPLIST1 0x00000024 #define SCALER_DISPLIST2 0x00000028

The longer FIFOs in vc5 pixelvalves means that the FIFO full level doesn't fit in the original register field and that we also have a secondary field. In order to prepare for this, let's move the registers fill part to a helper function.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index e25e81bf64e7..12cfa0fb2e19 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -275,6 +275,15 @@ static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format) } }

+static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc, + u32 format) +{ + u32 level = vc4_get_fifo_full_level(vc4_crtc, format); + + return VC4_SET_FIELD(level & 0x3f, + PV_CONTROL_FIFO_LEVEL); +} + /* * Returns the encoder attached to the CRTC. * @@ -376,9 +385,8 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);

CRTC_WRITE(PV_CONTROL, + vc4_crtc_get_fifo_full_level_bits(vc4_crtc, format) | VC4_SET_FIELD(format, PV_CONTROL_FORMAT) | - VC4_SET_FIELD(vc4_get_fifo_full_level(vc4_crtc, format), - PV_CONTROL_FIFO_LEVEL) | VC4_SET_FIELD(pixel_rep - 1, PV_CONTROL_PIXEL_REP) | PV_CONTROL_CLR_AT_START | PV_CONTROL_TRIGGER_UNDERFLOW |

The BCM2711 sports a second HDMI controller, so let's add that second HDMI encoder type.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_drv.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index cc30e54d75ab..974cda3c5292 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -430,6 +430,7 @@ to_vc4_plane_state(struct drm_plane_state *state) enum vc4_encoder_type { VC4_ENCODER_TYPE_NONE, VC4_ENCODER_TYPE_HDMI0, + VC4_ENCODER_TYPE_HDMI1, VC4_ENCODER_TYPE_VEC, VC4_ENCODER_TYPE_DSI0, VC4_ENCODER_TYPE_DSI1,

The HVS5 uses different color matrices. Disable color management support for now.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 8a3fe4d39847..9ec345254808 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -441,7 +441,7 @@ static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc)

HVS_WRITE(SCALER_DISPBKGNDX(vc4_state->assigned_channel), SCALER_DISPBKGND_AUTOHS | - SCALER_DISPBKGND_GAMMA | + ((!vc4->hvs->hvs5) ? SCALER_DISPBKGND_GAMMA : 0) | (interlace ? SCALER_DISPBKGND_INTERLACE : 0));

/* Reload the LUT, since the SRAMs would have been disabled if @@ -1157,6 +1157,7 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = dev_get_drvdata(master); + struct vc4_dev *vc4 = to_vc4_dev(drm); const struct vc4_crtc_data *pv_data; struct vc4_crtc *vc4_crtc; struct drm_crtc *crtc; @@ -1198,12 +1199,16 @@ static int vc4_crtc_bind(struct device *dev, struct device *master, void *data) drm_crtc_init_with_planes(drm, crtc, primary_plane, NULL, &vc4_crtc_funcs, NULL); drm_crtc_helper_add(crtc, &vc4_crtc_helper_funcs); - drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));

- /* We support CTM, but only for one CRTC at a time. It's therefore - * implemented as private driver state in vc4_kms, not here. - */ - drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size); + if (!vc4->hvs->hvs5) { + drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r)); + + /* We support CTM, but only for one CRTC at a + * time. It's therefore implemented as private driver + * state in vc4_kms, not here. + */ + drm_crtc_enable_color_mgmt(crtc, 0, true, crtc->gamma_size); + }

CRTC_WRITE(PV_INTEN, 0); CRTC_WRITE(PV_INTSTAT, PV_INT_VFP_START);

In order to make further refactoring easier, let's move the HVS channel setup / teardown to their own function.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hvs.c | 106 +++++++++++++++++++---------------- 1 file changed, 59 insertions(+), 47 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 0cd63d817a7e..2352a63fd26b 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -196,6 +196,62 @@ static void vc4_hvs_update_gamma_lut(struct drm_crtc *crtc) vc4_hvs_lut_load(crtc); }

+static int vc4_hvs_init_channel(struct vc4_dev *vc4, struct drm_crtc *crtc, + struct drm_display_mode *mode, bool oneshot) +{ + struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(crtc->state); + unsigned int chan = vc4_crtc_state->assigned_channel; + u32 dispctrl; + + /* Turn on the scaler, which will wait for vstart to start + * compositing. + * When feeding the transposer, we should operate in oneshot + * mode. + */ + dispctrl = SCALER_DISPCTRLX_ENABLE; + + if (!vc4->hvs->hvs5) + dispctrl |= VC4_SET_FIELD(mode->hdisplay, + SCALER_DISPCTRLX_WIDTH) | + VC4_SET_FIELD(mode->vdisplay, + SCALER_DISPCTRLX_HEIGHT) | + (oneshot ? SCALER_DISPCTRLX_ONESHOT : 0); + else + dispctrl |= VC4_SET_FIELD(mode->hdisplay, + SCALER5_DISPCTRLX_WIDTH) | + VC4_SET_FIELD(mode->vdisplay, + SCALER5_DISPCTRLX_HEIGHT) | + (oneshot ? SCALER5_DISPCTRLX_ONESHOT : 0); + + HVS_WRITE(SCALER_DISPCTRLX(chan), dispctrl); + + return 0; +} + +static void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int chan) +{ + struct vc4_dev *vc4 = to_vc4_dev(dev); + + if (HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_ENABLE) + return; + + HVS_WRITE(SCALER_DISPCTRLX(chan), + HVS_READ(SCALER_DISPCTRLX(chan)) | SCALER_DISPCTRLX_RESET); + HVS_WRITE(SCALER_DISPCTRLX(chan), + HVS_READ(SCALER_DISPCTRLX(chan)) & ~SCALER_DISPCTRLX_ENABLE); + + /* Once we leave, the scaler should be disabled and its fifo empty. */ + WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_RESET); + + WARN_ON_ONCE(VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(chan)), + SCALER_DISPSTATX_MODE) != + SCALER_DISPSTATX_MODE_DISABLED); + + WARN_ON_ONCE((HVS_READ(SCALER_DISPSTATX(chan)) & + (SCALER_DISPSTATX_FULL | SCALER_DISPSTATX_EMPTY)) != + SCALER_DISPSTATX_EMPTY); +} + int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state) { @@ -268,63 +324,19 @@ void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); struct drm_display_mode *mode = &crtc->state->adjusted_mode; bool oneshot = vc4_state->feed_txp; - u32 dispctrl;

vc4_hvs_update_dlist(crtc); - - /* Turn on the scaler, which will wait for vstart to start - * compositing. - * When feeding the transposer, we should operate in oneshot - * mode. - */ - dispctrl = SCALER_DISPCTRLX_ENABLE; - - if (!vc4->hvs->hvs5) - dispctrl |= VC4_SET_FIELD(mode->hdisplay, - SCALER_DISPCTRLX_WIDTH) | - VC4_SET_FIELD(mode->vdisplay, - SCALER_DISPCTRLX_HEIGHT) | - (oneshot ? SCALER_DISPCTRLX_ONESHOT : 0); - else - dispctrl |= VC4_SET_FIELD(mode->hdisplay, - SCALER5_DISPCTRLX_WIDTH) | - VC4_SET_FIELD(mode->vdisplay, - SCALER5_DISPCTRLX_HEIGHT) | - (oneshot ? SCALER5_DISPCTRLX_ONESHOT : 0); - - HVS_WRITE(SCALER_DISPCTRLX(vc4_state->assigned_channel), dispctrl); + vc4_hvs_init_channel(vc4, crtc, mode, oneshot); }

void vc4_hvs_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { struct drm_device *dev = crtc->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_crtc_state *vc4_crtc_state = to_vc4_crtc_state(old_state); - u32 chan = vc4_crtc_state->assigned_channel; - - if (HVS_READ(SCALER_DISPCTRLX(chan)) & - SCALER_DISPCTRLX_ENABLE) { - HVS_WRITE(SCALER_DISPCTRLX(chan), - SCALER_DISPCTRLX_RESET); - - /* While the docs say that reset is self-clearing, it - * seems it doesn't actually. - */ - HVS_WRITE(SCALER_DISPCTRLX(chan), 0); - } - - /* Once we leave, the scaler should be disabled and its fifo empty. */ - - WARN_ON_ONCE(HVS_READ(SCALER_DISPCTRLX(chan)) & SCALER_DISPCTRLX_RESET); - - WARN_ON_ONCE(VC4_GET_FIELD(HVS_READ(SCALER_DISPSTATX(chan)), - SCALER_DISPSTATX_MODE) != - SCALER_DISPSTATX_MODE_DISABLED); + unsigned int chan = vc4_crtc_state->assigned_channel;

- WARN_ON_ONCE((HVS_READ(SCALER_DISPSTATX(chan)) & - (SCALER_DISPSTATX_FULL | SCALER_DISPSTATX_EMPTY)) != - SCALER_DISPSTATX_EMPTY); + vc4_hvs_stop_channel(dev, chan); }

void vc4_hvs_atomic_flush(struct drm_crtc *crtc,

In order to clear our intermediate FIFOs that might end up with a stale pixel, let's make sure our FIFO channel is reset everytime our channel is setup.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hvs.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 87bbd68d44db..754aff3966bd 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -205,6 +205,10 @@ static int vc4_hvs_init_channel(struct vc4_dev *vc4, struct drm_crtc *crtc, u32 dispbkgndx; u32 dispctrl;

+ HVS_WRITE(SCALER_DISPCTRLX(chan), 0); + HVS_WRITE(SCALER_DISPCTRLX(chan), SCALER_DISPCTRLX_RESET); + HVS_WRITE(SCALER_DISPCTRLX(chan), 0); + /* Turn on the scaler, which will wait for vstart to start * compositing. * When feeding the transposer, we should operate in oneshot

On BCM2711 to avoid stale pixels getting stuck in intermediate FIFOs, the pixelvalve needs to be setup each time there's a mode change or enable / disable sequence.

Therefore, we can't really use mode_set_nofb anymore to configure it, but we need to move it to atomic_enable.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index a69e0d456b79..08bd595f6a7c 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -374,14 +374,6 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) } }

-static void vc4_crtc_mode_set_nofb(struct drm_crtc *crtc) -{ - struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); - - if (!vc4_state->feed_txp) - vc4_crtc_config_pv(crtc); -} - static void require_hvs_enabled(struct drm_device *dev) { struct vc4_dev *vc4 = to_vc4_dev(dev); @@ -443,6 +435,9 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,

vc4_crtc_pixelvalve_reset(crtc);

+ if (!vc4_state->feed_txp) + vc4_crtc_config_pv(crtc); + CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN);

/* Enable vblank irq handling before crtc is started otherwise @@ -814,7 +809,6 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = { };

static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { - .mode_set_nofb = vc4_crtc_mode_set_nofb, .mode_valid = vc4_crtc_mode_valid, .atomic_check = vc4_crtc_atomic_check, .atomic_flush = vc4_hvs_atomic_flush,

In order to avoid stale pixels getting stuck in an intermediate FIFO between the HVS and the pixelvalve on BCM2711, we need to configure the HVS channel before the pixelvalve is reset and configured.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 3c9b0d684136..83fb5ba19b43 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -433,11 +433,6 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,

require_hvs_enabled(dev);

- if (!vc4_state->feed_txp) - vc4_crtc_config_pv(crtc); - - CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN); - /* Enable vblank irq handling before crtc is started otherwise * drm_crtc_get_vblank() fails in vc4_crtc_update_dlist(). */ @@ -445,6 +440,11 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,

vc4_hvs_atomic_enable(crtc, old_state);

+ if (!vc4_state->feed_txp) + vc4_crtc_config_pv(crtc); + + CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN); + /* When feeding the transposer block the pixelvalve is unneeded and * should not be enabled. */

In order to avoid pixels getting stuck in the (unflushable) FIFO between the HVS and the PV, we need to add some delay after disabling the PV output and before disabling the HDMI controller. 20ms seems to be good enough so let's use that.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index b3721bce7c81..dee8dc7b9409 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -401,6 +401,8 @@ static void vc4_crtc_atomic_disable(struct drm_crtc *crtc, ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1); WARN_ONCE(ret, "Timeout waiting for !PV_VCONTROL_VIDEN\n");

+ mdelay(20); + if (vc4_encoder->post_crtc_disable) vc4_encoder->post_crtc_disable(encoder);

Even though it's not really clear why we need to flush the PV FIFO during the configuration even though we started by flushing it, experience shows that without it we get a stale pixel stuck in the FIFO between the HVS and the PV.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 61e0945a8697..ecb3431470dd 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -356,7 +356,7 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) if (is_dsi) CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);

- CRTC_WRITE(PV_CONTROL, + CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR | vc4_crtc_get_fifo_full_level_bits(vc4_crtc, format) | VC4_SET_FIELD(format, PV_CONTROL_FORMAT) | VC4_SET_FIELD(pixel_rep - 1, PV_CONTROL_PIXEL_REP) |

At boot time, if we detect that a pixelvalve has been enabled, we need to be able to retrieve the HVS channel it has been assigned to so that we can disable that channel too. Let's create that function that returns the FIFO or an error from a given output.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_drv.h | 1 +- drivers/gpu/drm/vc4/vc4_hvs.c | 51 ++++++++++++++++++++++++++++++++++++- 2 files changed, 52 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index d51b695732e0..99001f8783aa 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -880,6 +880,7 @@ void vc4_irq_reset(struct drm_device *dev); /* vc4_hvs.c */ extern struct platform_driver vc4_hvs_driver; void vc4_hvs_stop_channel(struct drm_device *dev, unsigned int output); +int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output); int vc4_hvs_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *state); void vc4_hvs_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state); void vc4_hvs_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state); diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c index 1785c49534cf..56657959778f 100644 --- a/drivers/gpu/drm/vc4/vc4_hvs.c +++ b/drivers/gpu/drm/vc4/vc4_hvs.c @@ -19,6 +19,7 @@ * each CRTC. */

+#include <linux/bitfield.h> #include <linux/clk.h> #include <linux/component.h> #include <linux/platform_device.h> @@ -196,6 +197,56 @@ static void vc4_hvs_update_gamma_lut(struct drm_crtc *crtc) vc4_hvs_lut_load(crtc); }

+int vc4_hvs_get_fifo_from_output(struct drm_device *dev, unsigned int output) +{ + struct vc4_dev *vc4 = to_vc4_dev(dev); + u32 reg; + int ret; + + switch (output) { + case 0: + return 0; + + case 1: + return 1; + + case 2: + reg = HVS_READ(SCALER_DISPECTRL); + ret = FIELD_GET(SCALER_DISPECTRL_DSP2_MUX_MASK, reg); + if (ret == 0) + return 2; + + return 0; + + case 3: + reg = HVS_READ(SCALER_DISPCTRL); + ret = FIELD_GET(SCALER_DISPCTRL_DSP3_MUX_MASK, reg); + if (ret == 3) + return -EPIPE; + + return ret; + + case 4: + reg = HVS_READ(SCALER_DISPEOLN); + ret = FIELD_GET(SCALER_DISPEOLN_DSP4_MUX_MASK, reg); + if (ret == 3) + return -EPIPE; + + return ret; + + case 5: + reg = HVS_READ(SCALER_DISPDITHER); + ret = FIELD_GET(SCALER_DISPDITHER_DSP5_MUX_MASK, reg); + if (ret == 3) + return -EPIPE; + + return ret; + + default: + return -EPIPE; + } +} + static int vc4_hvs_init_channel(struct vc4_dev *vc4, struct drm_crtc *crtc, struct drm_display_mode *mode, bool oneshot) {

In order to prevent issues during the firmware to KMS transition, we need to make sure the pixelvalve are disabled at boot time so that the DRM state matches the hardware state.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 23 +++++++++++++++++++++++ drivers/gpu/drm/vc4/vc4_drv.c | 4 ++++ drivers/gpu/drm/vc4/vc4_drv.h | 1 + 3 files changed, 28 insertions(+)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 3d2a31cad7fa..9efd7cb25590 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -409,6 +409,29 @@ static int vc4_crtc_disable(struct drm_crtc *crtc, unsigned int channel) return 0; }

+int vc4_crtc_disable_at_boot(struct drm_crtc *crtc) +{ + struct drm_device *dev = crtc->dev; + struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + int channel; + + if (of_device_is_compatible(vc4_crtc->pdev->dev.of_node, + "brcm,bcm2835-txp")) + return 0; + + if (!(CRTC_READ(PV_CONTROL) & PV_CONTROL_EN)) + return 0; + + if (!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN)) + return 0; + + channel = vc4_hvs_get_fifo_from_output(dev, vc4_crtc->data->hvs_output); + if (channel < 0) + return 0; + + return vc4_crtc_disable(crtc, channel); +} + static void vc4_crtc_atomic_disable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index ed7893ee188a..ea082b9d3c90 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -252,6 +252,7 @@ static int vc4_drm_bind(struct device *dev) struct drm_device *drm; struct vc4_dev *vc4; struct device_node *node; + struct drm_crtc *crtc; int ret = 0;

dev->coherent_dma_mask = DMA_BIT_MASK(32); @@ -298,6 +299,9 @@ static int vc4_drm_bind(struct device *dev) if (ret < 0) goto unbind_all;

+ drm_for_each_crtc(crtc, drm) + vc4_crtc_disable_at_boot(crtc); + ret = drm_dev_register(drm, 0); if (ret < 0) goto unbind_all; diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 99001f8783aa..32e9de15262a 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -797,6 +797,7 @@ void vc4_bo_remove_from_purgeable_pool(struct vc4_bo *bo);

/* vc4_crtc.c */ extern struct platform_driver vc4_crtc_driver; +int vc4_crtc_disable_at_boot(struct drm_crtc *crtc); void vc4_crtc_handle_vblank(struct vc4_crtc *crtc); void vc4_crtc_txp_armed(struct drm_crtc_state *state); void vc4_crtc_get_margins(struct drm_crtc_state *state,

The BCM2711 has 5 pixelvalves, so now that our driver is ready, let's add support for them.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 84 ++++++++++++++++++++++++++++++++++- drivers/gpu/drm/vc4/vc4_regs.h | 6 +++- 2 files changed, 88 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 9efd7cb25590..a577ed8f929f 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -229,6 +229,13 @@ static u32 vc4_get_fifo_full_level(struct vc4_crtc *vc4_crtc, u32 format) case PV_CONTROL_FORMAT_24: case PV_CONTROL_FORMAT_DSIV_24: default: + /* + * For some reason, the pixelvalve4 doesn't work with + * the usual formula and will only work with 32. + */ + if (vc4_crtc->data->hvs_output == 5) + return 32; + return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX; } } @@ -237,9 +244,14 @@ static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc, u32 format) { u32 level = vc4_get_fifo_full_level(vc4_crtc, format); + u32 ret = 0;

- return VC4_SET_FIELD(level & 0x3f, - PV_CONTROL_FIFO_LEVEL); + if (level > 0x3f) + ret |= VC4_SET_FIELD((level >> 6) & 0x3, + PV5_CONTROL_FIFO_LEVEL_HIGH); + + return ret | VC4_SET_FIELD(level & 0x3f, + PV_CONTROL_FIFO_LEVEL); }

/* @@ -277,6 +289,8 @@ static void vc4_crtc_pixelvalve_reset(struct drm_crtc *crtc)

static void vc4_crtc_config_pv(struct drm_crtc *crtc) { + struct drm_device *dev = crtc->dev; + struct vc4_dev *vc4 = to_vc4_dev(dev); struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc); struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); @@ -356,6 +370,10 @@ static void vc4_crtc_config_pv(struct drm_crtc *crtc) if (is_dsi) CRTC_WRITE(PV_HACT_ACT, mode->hdisplay * pixel_rep);

+ if (vc4->hvs->hvs5) + CRTC_WRITE(PV_MUX_CFG, + VC4_SET_FIELD(8, PV_MUX_CFG_RGB_PIXEL_MUX_MODE)); + CRTC_WRITE(PV_CONTROL, PV_CONTROL_FIFO_CLR | vc4_crtc_get_fifo_full_level_bits(vc4_crtc, format) | VC4_SET_FIELD(format, PV_CONTROL_FORMAT) | @@ -904,10 +922,72 @@ static const struct vc4_crtc_data bcm2835_pv2_data = { }, };

+static const struct vc4_crtc_data bcm2711_pv0_data = { + .debugfs_name = "crtc0_regs", + .hvs_available_channels = BIT(0), + .hvs_output = 0, + .fifo_depth = 64, + .pixels_per_clock = 1, + .encoder_types = { + [0] = VC4_ENCODER_TYPE_DSI0, + [1] = VC4_ENCODER_TYPE_DPI, + }, +}; + +static const struct vc4_crtc_data bcm2711_pv1_data = { + .debugfs_name = "crtc1_regs", + .hvs_available_channels = BIT(0) | BIT(1) | BIT(2), + .hvs_output = 3, + .fifo_depth = 64, + .pixels_per_clock = 1, + .encoder_types = { + [0] = VC4_ENCODER_TYPE_DSI1, + [1] = VC4_ENCODER_TYPE_SMI, + }, +}; + +static const struct vc4_crtc_data bcm2711_pv2_data = { + .debugfs_name = "crtc2_regs", + .hvs_available_channels = BIT(0) | BIT(1) | BIT(2), + .hvs_output = 4, + .fifo_depth = 256, + .pixels_per_clock = 2, + .encoder_types = { + [0] = VC4_ENCODER_TYPE_HDMI0, + }, +}; + +static const struct vc4_crtc_data bcm2711_pv3_data = { + .debugfs_name = "crtc3_regs", + .hvs_available_channels = BIT(1), + .hvs_output = 1, + .fifo_depth = 64, + .pixels_per_clock = 1, + .encoder_types = { + [0] = VC4_ENCODER_TYPE_VEC, + }, +}; + +static const struct vc4_crtc_data bcm2711_pv4_data = { + .debugfs_name = "crtc4_regs", + .hvs_available_channels = BIT(0) | BIT(1) | BIT(2), + .hvs_output = 5, + .fifo_depth = 64, + .pixels_per_clock = 2, + .encoder_types = { + [0] = VC4_ENCODER_TYPE_HDMI1, + }, +}; + static const struct of_device_id vc4_crtc_dt_match[] = { { .compatible = "brcm,bcm2835-pixelvalve0", .data = &bcm2835_pv0_data }, { .compatible = "brcm,bcm2835-pixelvalve1", .data = &bcm2835_pv1_data }, { .compatible = "brcm,bcm2835-pixelvalve2", .data = &bcm2835_pv2_data }, + { .compatible = "brcm,bcm2711-pixelvalve0", .data = &bcm2711_pv0_data }, + { .compatible = "brcm,bcm2711-pixelvalve1", .data = &bcm2711_pv1_data }, + { .compatible = "brcm,bcm2711-pixelvalve2", .data = &bcm2711_pv2_data }, + { .compatible = "brcm,bcm2711-pixelvalve3", .data = &bcm2711_pv3_data }, + { .compatible = "brcm,bcm2711-pixelvalve4", .data = &bcm2711_pv4_data }, {} };

diff --git a/drivers/gpu/drm/vc4/vc4_regs.h b/drivers/gpu/drm/vc4/vc4_regs.h index b96ebbb1354b..35279b118d41 100644 --- a/drivers/gpu/drm/vc4/vc4_regs.h +++ b/drivers/gpu/drm/vc4/vc4_regs.h @@ -130,6 +130,8 @@ #define V3D_ERRSTAT 0x00f20

#define PV_CONTROL 0x00 +# define PV5_CONTROL_FIFO_LEVEL_HIGH_MASK VC4_MASK(26, 25) +# define PV5_CONTROL_FIFO_LEVEL_HIGH_SHIFT 25 # define PV_CONTROL_FORMAT_MASK VC4_MASK(23, 21) # define PV_CONTROL_FORMAT_SHIFT 21 # define PV_CONTROL_FORMAT_24 0 @@ -209,6 +211,10 @@

#define PV_HACT_ACT 0x30

+#define PV_MUX_CFG 0x34 +# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_MASK VC4_MASK(5, 2) +# define PV_MUX_CFG_RGB_PIXEL_MUX_MODE_SHIFT 2 + #define SCALER_CHANNELS_COUNT 3

#define SCALER_DISPCTRL 0x00000000

We'll need the CRTC state related functions to be exported so that we can reuse them for the TXP.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 21 ++++++++++----------- drivers/gpu/drm/vc4/vc4_drv.h | 10 ++++++++++ 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index a577ed8f929f..4df8cc5387a0 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -201,7 +201,7 @@ static bool vc4_crtc_get_scanout_position(struct drm_crtc *crtc, return ret; }

-static void vc4_crtc_destroy(struct drm_crtc *crtc) +void vc4_crtc_destroy(struct drm_crtc *crtc) { drm_crtc_cleanup(crtc); } @@ -803,11 +803,11 @@ static int vc4_async_page_flip(struct drm_crtc *crtc, return 0; }

-static int vc4_page_flip(struct drm_crtc *crtc, - struct drm_framebuffer *fb, - struct drm_pending_vblank_event *event, - uint32_t flags, - struct drm_modeset_acquire_ctx *ctx) +int vc4_page_flip(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t flags, + struct drm_modeset_acquire_ctx *ctx) { if (flags & DRM_MODE_PAGE_FLIP_ASYNC) return vc4_async_page_flip(crtc, fb, event, flags); @@ -815,7 +815,7 @@ static int vc4_page_flip(struct drm_crtc *crtc, return drm_atomic_helper_page_flip(crtc, fb, event, flags, ctx); }

-static struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc) +struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc) { struct vc4_crtc_state *vc4_state, *old_vc4_state;

@@ -832,8 +832,8 @@ static struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc) return &vc4_state->base; }

-static void vc4_crtc_destroy_state(struct drm_crtc *crtc, - struct drm_crtc_state *state) +void vc4_crtc_destroy_state(struct drm_crtc *crtc, + struct drm_crtc_state *state) { struct vc4_dev *vc4 = to_vc4_dev(crtc->dev); struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state); @@ -850,8 +850,7 @@ static void vc4_crtc_destroy_state(struct drm_crtc *crtc, drm_atomic_helper_crtc_destroy_state(crtc, state); }

-static void -vc4_crtc_reset(struct drm_crtc *crtc) +void vc4_crtc_reset(struct drm_crtc *crtc) { if (crtc->state) vc4_crtc_destroy_state(crtc, crtc->state); diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 32e9de15262a..da4d2391a4ba 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -798,6 +798,16 @@ void vc4_bo_remove_from_purgeable_pool(struct vc4_bo *bo); /* vc4_crtc.c */ extern struct platform_driver vc4_crtc_driver; int vc4_crtc_disable_at_boot(struct drm_crtc *crtc); +void vc4_crtc_destroy(struct drm_crtc *crtc); +int vc4_page_flip(struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_pending_vblank_event *event, + uint32_t flags, + struct drm_modeset_acquire_ctx *ctx); +struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc); +void vc4_crtc_destroy_state(struct drm_crtc *crtc, + struct drm_crtc_state *state); +void vc4_crtc_reset(struct drm_crtc *crtc); void vc4_crtc_handle_vblank(struct vc4_crtc *crtc); void vc4_crtc_txp_armed(struct drm_crtc_state *state); void vc4_crtc_get_margins(struct drm_crtc_state *state,

The CRTC hooks are called both for the TXP and the pixelvalve, yet some will read / write the registers as if the device was a pixelvalve, which won't really work.

Let's make sure we only access those registers if we are running on a PixelValve.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index f82e3b0e11bd..ee4381c144a5 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -405,16 +405,19 @@ static void require_hvs_enabled(struct drm_device *dev)

static int vc4_crtc_disable(struct drm_crtc *crtc, unsigned int channel) { + struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); struct drm_encoder *encoder = vc4_get_crtc_encoder(crtc); struct vc4_encoder *vc4_encoder = to_vc4_encoder(encoder); struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); struct drm_device *dev = crtc->dev; int ret;

- CRTC_WRITE(PV_V_CONTROL, - CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN); - ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1); - WARN_ONCE(ret, "Timeout waiting for !PV_VCONTROL_VIDEN\n"); + if (!vc4_state->feed_txp) { + CRTC_WRITE(PV_V_CONTROL, + CRTC_READ(PV_V_CONTROL) & ~PV_VCONTROL_VIDEN); + ret = wait_for(!(CRTC_READ(PV_V_CONTROL) & PV_VCONTROL_VIDEN), 1); + WARN_ONCE(ret, "Timeout waiting for !PV_VCONTROL_VIDEN\n"); + }

mdelay(20);

@@ -508,10 +511,10 @@ static void vc4_crtc_atomic_enable(struct drm_crtc *crtc, if (vc4_encoder->pre_crtc_configure) vc4_encoder->pre_crtc_configure(encoder);

- if (!vc4_state->feed_txp) + if (!vc4_state->feed_txp) { vc4_crtc_config_pv(crtc); - - CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN); + CRTC_WRITE(PV_CONTROL, CRTC_READ(PV_CONTROL) | PV_CONTROL_EN); + }

if (vc4_encoder->pre_crtc_enable) vc4_encoder->pre_crtc_enable(encoder); @@ -611,6 +614,10 @@ static int vc4_crtc_atomic_check(struct drm_crtc *crtc, static int vc4_enable_vblank(struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); + + if (vc4_state->feed_txp) + return 0;

CRTC_WRITE(PV_INTEN, PV_INT_VFP_START);

@@ -620,6 +627,10 @@ static int vc4_enable_vblank(struct drm_crtc *crtc) static void vc4_disable_vblank(struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); + struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); + + if (vc4_state->feed_txp) + return;

CRTC_WRITE(PV_INTEN, 0); }

The TXP probes before the HVS, so testing the hvs5 flag in the hvs pointer of the main device structure won't work and result in a null pointer dereference.

Let's test for the main device compatible instead so that it can work.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 6d7799ff8f87..d284596ec048 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -1055,7 +1055,6 @@ int vc4_crtc_init(struct drm_device *drm, struct vc4_crtc *vc4_crtc, const struct drm_crtc_funcs *crtc_funcs, const struct drm_crtc_helper_funcs *crtc_helper_funcs) { - struct vc4_dev *vc4 = to_vc4_dev(drm); struct drm_crtc *crtc = &vc4_crtc->base; struct drm_plane *primary_plane; unsigned int i; @@ -1076,7 +1075,7 @@ int vc4_crtc_init(struct drm_device *drm, struct vc4_crtc *vc4_crtc, crtc_funcs, NULL); drm_crtc_helper_add(crtc, crtc_helper_funcs);

- if (!vc4->hvs->hvs5) { + if (!of_device_is_compatible(drm->dev->of_node, "brcm,bcm2711-vc5")) { drm_mode_crtc_set_gamma_size(crtc, ARRAY_SIZE(vc4_crtc->lut_r));

/* We support CTM, but only for one CRTC at a

The TXP so far has been leveraging the PixelValve infrastructure in the driver, that was really two things: the interaction with DRM's CRTC concept, the setup of the underlying pixelvalve and the setup of the shared HVS, the pixelvalve part being irrelevant to the TXP since it accesses the HVS directly.

Now that we have a clear separation between the three parts, we can represent the TXP as a CRTC of its own, leveraging the common CRTC and HVS code, but leaving aside the pixelvalve setup.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_crtc.c | 19 +------ drivers/gpu/drm/vc4/vc4_txp.c | 100 +++++++++++++++++++++++++++++++++- 2 files changed, 99 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index fbddd38ba6a9..d6eca130644d 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -583,17 +583,6 @@ static int vc4_crtc_atomic_check(struct drm_crtc *crtc, if (conn_state->crtc != crtc) continue;

- /* The writeback connector is implemented using the transposer - * block which is directly taking its data from the HVS FIFO. - */ - if (conn->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) { - state->no_vblank = true; - vc4_state->feed_txp = true; - } else { - state->no_vblank = false; - vc4_state->feed_txp = false; - } - vc4_state->margins.left = conn_state->tv.margins.left; vc4_state->margins.right = conn_state->tv.margins.right; vc4_state->margins.top = conn_state->tv.margins.top; @@ -1017,7 +1006,6 @@ static void vc4_set_crtc_possible_masks(struct drm_device *drm, struct drm_crtc *crtc) { struct vc4_crtc *vc4_crtc = to_vc4_crtc(crtc); - const struct vc4_crtc_data *crtc_data = vc4_crtc_to_vc4_crtc_data(vc4_crtc); const struct vc4_pv_data *pv_data = vc4_crtc_to_vc4_pv_data(vc4_crtc); const enum vc4_encoder_type *encoder_types = pv_data->encoder_types; struct drm_encoder *encoder; @@ -1026,13 +1014,6 @@ static void vc4_set_crtc_possible_masks(struct drm_device *drm, struct vc4_encoder *vc4_encoder; int i;

- /* HVS FIFO2 can feed the TXP IP. */ - if (crtc_data->hvs_output == 2 && - encoder->encoder_type == DRM_MODE_ENCODER_VIRTUAL) { - encoder->possible_crtcs |= drm_crtc_mask(crtc); - continue; - } - vc4_encoder = to_vc4_encoder(encoder); for (i = 0; i < ARRAY_SIZE(pv_data->encoder_types); i++) { if (vc4_encoder->type == encoder_types[i]) { diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c index d9a8ab87ad25..849dcafbfff1 100644 --- a/drivers/gpu/drm/vc4/vc4_txp.c +++ b/drivers/gpu/drm/vc4/vc4_txp.c @@ -19,6 +19,7 @@ #include <drm/drm_fourcc.h> #include <drm/drm_panel.h> #include <drm/drm_probe_helper.h> +#include <drm/drm_vblank.h> #include <drm/drm_writeback.h>

#include "vc4_drv.h" @@ -145,6 +146,8 @@ #define TXP_WRITE(offset, val) writel(val, txp->regs + (offset))

struct vc4_txp { + struct vc4_crtc base; + struct platform_device *pdev;

struct drm_writeback_connector connector; @@ -362,23 +365,105 @@ static const struct drm_encoder_helper_funcs vc4_txp_encoder_helper_funcs = { .disable = vc4_txp_encoder_disable, };

+static int vc4_txp_enable_vblank(struct drm_crtc *crtc) +{ + return 0; +} + +static void vc4_txp_disable_vblank(struct drm_crtc *crtc) {} + +static const struct drm_crtc_funcs vc4_txp_crtc_funcs = { + .set_config = drm_atomic_helper_set_config, + .destroy = vc4_crtc_destroy, + .page_flip = vc4_page_flip, + .reset = vc4_crtc_reset, + .atomic_duplicate_state = vc4_crtc_duplicate_state, + .atomic_destroy_state = vc4_crtc_destroy_state, + .gamma_set = drm_atomic_helper_legacy_gamma_set, + .enable_vblank = vc4_txp_enable_vblank, + .disable_vblank = vc4_txp_disable_vblank, +}; + +static int vc4_txp_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(state); + int ret; + + ret = vc4_hvs_atomic_check(crtc, state); + if (ret) + return ret; + + state->no_vblank = true; + vc4_state->feed_txp = true; + + return 0; +} + +static void vc4_txp_atomic_enable(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) +{ + drm_crtc_vblank_on(crtc); + vc4_hvs_atomic_enable(crtc, old_state); +} + +static void vc4_txp_atomic_disable(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) +{ + struct drm_device *dev = crtc->dev; + + /* Disable vblank irq handling before crtc is disabled. */ + drm_crtc_vblank_off(crtc); + + vc4_hvs_atomic_disable(crtc, old_state); + + /* + * Make sure we issue a vblank event after disabling the CRTC if + * someone was waiting it. + */ + if (crtc->state->event) { + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + drm_crtc_send_vblank_event(crtc, crtc->state->event); + crtc->state->event = NULL; + spin_unlock_irqrestore(&dev->event_lock, flags); + } +} + +static const struct drm_crtc_helper_funcs vc4_txp_crtc_helper_funcs = { + .atomic_check = vc4_txp_atomic_check, + .atomic_flush = vc4_hvs_atomic_flush, + .atomic_enable = vc4_txp_atomic_enable, + .atomic_disable = vc4_txp_atomic_disable, +}; + static irqreturn_t vc4_txp_interrupt(int irq, void *data) { struct vc4_txp *txp = data; + struct vc4_crtc *vc4_crtc = &txp->base;

TXP_WRITE(TXP_DST_CTRL, TXP_READ(TXP_DST_CTRL) & ~TXP_EI); - vc4_crtc_handle_vblank(to_vc4_crtc(txp->connector.base.state->crtc)); + vc4_crtc_handle_vblank(vc4_crtc); drm_writeback_signal_completion(&txp->connector, 0);

return IRQ_HANDLED; }

+static const struct vc4_crtc_data vc4_txp_crtc_data = { + .hvs_available_channels = BIT(2), + .hvs_output = 2, +}; + static int vc4_txp_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = dev_get_drvdata(master); struct vc4_dev *vc4 = to_vc4_dev(drm); + struct vc4_crtc *vc4_crtc; struct vc4_txp *txp; + struct drm_crtc *crtc; + struct drm_encoder *encoder; int ret, irq;

irq = platform_get_irq(pdev, 0); @@ -388,6 +473,11 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data) txp = devm_kzalloc(dev, sizeof(*txp), GFP_KERNEL); if (!txp) return -ENOMEM; + vc4_crtc = &txp->base; + crtc = &vc4_crtc->base; + + vc4_crtc->pdev = pdev; + vc4_crtc->data = &vc4_txp_crtc_data;

txp->pdev = pdev;

@@ -407,6 +497,14 @@ static int vc4_txp_bind(struct device *dev, struct device *master, void *data) if (ret) return ret;

+ ret = vc4_crtc_init(drm, vc4_crtc, + &vc4_txp_crtc_funcs, &vc4_txp_crtc_helper_funcs); + if (ret) + return ret; + + encoder = &txp->connector.encoder; + encoder->possible_crtcs |= drm_crtc_mask(crtc); + ret = devm_request_irq(dev, irq, vc4_txp_interrupt, 0, dev_name(dev), txp); if (ret)

We're calling vc4_debugfs_add_file with our struct vc4_hdmi pointer set in the private field, but we don't use that field and go through the main struct vc4_dev to get it.

Let's use the private field directly, that will save us some trouble later on.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 19a0780a14bd..38fe942a327b 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -183,9 +183,7 @@ static const struct debugfs_reg32 hd_regs[] = { static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused) { struct drm_info_node *node = (struct drm_info_node *)m->private; - struct drm_device *dev = node->minor->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *hdmi = vc4->hdmi; + struct vc4_hdmi *hdmi = node->info_ent->data; struct drm_printer p = drm_seq_file_printer(m);

drm_print_regset32(&p, &hdmi->hdmi_regset);

the vc4_hdmi driver has some custom structures to hold the data it needs to associate with the drm_encoder and drm_connector structures.

However, it allocates them separately from the vc4_hdmi structure which makes it more complicated than it needs to be.

Move those structures to be contained by vc4_hdmi and update the code accordingly.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 87 ++++++++++++++++------------------- drivers/gpu/drm/vc4/vc4_hdmi.h | 64 +++++++++++++------------- 2 files changed, 72 insertions(+), 79 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 41573fca5a40..c1cb8790b552 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -191,20 +191,15 @@ static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = .get_modes = vc4_hdmi_connector_get_modes, };

-static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev, - struct drm_encoder *encoder, - struct i2c_adapter *ddc) +static int vc4_hdmi_connector_init(struct drm_device *dev, + struct vc4_hdmi *vc4_hdmi, + struct i2c_adapter *ddc) { - struct drm_connector *connector; - struct vc4_hdmi_connector *hdmi_connector; + struct vc4_hdmi_connector *hdmi_connector = &vc4_hdmi->connector; + struct drm_connector *connector = &hdmi_connector->base; + struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; int ret;

- hdmi_connector = devm_kzalloc(dev->dev, sizeof(*hdmi_connector), - GFP_KERNEL); - if (!hdmi_connector) - return ERR_PTR(-ENOMEM); - connector = &hdmi_connector->base; - hdmi_connector->encoder = encoder;

drm_connector_init_with_ddc(dev, connector, @@ -216,7 +211,7 @@ static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev, /* Create and attach TV margin props to this connector. */ ret = drm_mode_create_tv_margin_properties(dev); if (ret) - return ERR_PTR(ret); + return ret;

drm_connector_attach_tv_margin_properties(connector);

@@ -228,7 +223,7 @@ static struct drm_connector *vc4_hdmi_connector_init(struct drm_device *dev,

drm_connector_attach_encoder(connector, encoder);

- return connector; + return 0; }

static int vc4_hdmi_stop_packet(struct drm_encoder *encoder, @@ -298,21 +293,22 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder); struct vc4_dev *vc4 = encoder->dev->dev_private; struct vc4_hdmi *hdmi = vc4->hdmi; - struct drm_connector_state *cstate = hdmi->connector->state; + struct drm_connector *connector = &hdmi->connector.base; + struct drm_connector_state *cstate = connector->state; struct drm_crtc *crtc = encoder->crtc; const struct drm_display_mode *mode = &crtc->state->adjusted_mode; union hdmi_infoframe frame; int ret;

ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, - hdmi->connector, mode); + connector, mode); if (ret < 0) { DRM_ERROR("couldn't fill AVI infoframe\n"); return; }

drm_hdmi_avi_infoframe_quant_range(&frame.avi, - hdmi->connector, mode, + connector, mode, vc4_encoder->limited_rgb_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL); @@ -628,7 +624,8 @@ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = { /* HDMI audio codec callbacks */ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *hdmi) { - struct drm_device *drm = hdmi->encoder->dev; + struct drm_encoder *encoder = &hdmi->encoder.base.base; + struct drm_device *drm = encoder->dev; struct vc4_dev *vc4 = to_vc4_dev(drm); u32 hsm_clock = clk_get_rate(hdmi->hsm_clock); unsigned long n, m; @@ -647,7 +644,7 @@ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *hdmi)

static void vc4_hdmi_set_n_cts(struct vc4_hdmi *hdmi) { - struct drm_encoder *encoder = hdmi->encoder; + struct drm_encoder *encoder = &hdmi->encoder.base.base; struct drm_crtc *crtc = encoder->crtc; struct drm_device *drm = encoder->dev; struct vc4_dev *vc4 = to_vc4_dev(drm); @@ -685,7 +682,8 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct vc4_hdmi *hdmi = dai_to_hdmi(dai); - struct drm_encoder *encoder = hdmi->encoder; + struct drm_encoder *encoder = &hdmi->encoder.base.base; + struct drm_connector *connector = &hdmi->connector.base; struct vc4_dev *vc4 = to_vc4_dev(encoder->dev); int ret;

@@ -702,8 +700,7 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream, VC4_HDMI_RAM_PACKET_ENABLE)) return -ENODEV;

- ret = snd_pcm_hw_constraint_eld(substream->runtime, - hdmi->connector->eld); + ret = snd_pcm_hw_constraint_eld(substream->runtime, connector->eld); if (ret) return ret;

@@ -717,7 +714,7 @@ static int vc4_hdmi_audio_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)

static void vc4_hdmi_audio_reset(struct vc4_hdmi *hdmi) { - struct drm_encoder *encoder = hdmi->encoder; + struct drm_encoder *encoder = &hdmi->encoder.base.base; struct drm_device *drm = encoder->dev; struct device *dev = &hdmi->pdev->dev; struct vc4_dev *vc4 = to_vc4_dev(drm); @@ -751,7 +748,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct vc4_hdmi *hdmi = dai_to_hdmi(dai); - struct drm_encoder *encoder = hdmi->encoder; + struct drm_encoder *encoder = &hdmi->encoder.base.base; struct drm_device *drm = encoder->dev; struct device *dev = &hdmi->pdev->dev; struct vc4_dev *vc4 = to_vc4_dev(drm); @@ -824,7 +821,7 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct vc4_hdmi *hdmi = dai_to_hdmi(dai); - struct drm_encoder *encoder = hdmi->encoder; + struct drm_encoder *encoder = &hdmi->encoder.base.base; struct drm_device *drm = encoder->dev; struct vc4_dev *vc4 = to_vc4_dev(drm);

@@ -868,9 +865,10 @@ static int vc4_hdmi_audio_eld_ctl_info(struct snd_kcontrol *kcontrol, { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct vc4_hdmi *hdmi = snd_component_to_hdmi(component); + struct drm_connector *connector = &hdmi->connector.base;

uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; - uinfo->count = sizeof(hdmi->connector->eld); + uinfo->count = sizeof(connector->eld);

return 0; } @@ -880,9 +878,10 @@ static int vc4_hdmi_audio_eld_ctl_get(struct snd_kcontrol *kcontrol, { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct vc4_hdmi *hdmi = snd_component_to_hdmi(component); + struct drm_connector *connector = &hdmi->connector.base;

- memcpy(ucontrol->value.bytes.data, hdmi->connector->eld, - sizeof(hdmi->connector->eld)); + memcpy(ucontrol->value.bytes.data, connector->eld, + sizeof(connector->eld));

return 0; } @@ -1220,7 +1219,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) struct drm_device *drm = dev_get_drvdata(master); struct vc4_dev *vc4 = drm->dev_private; struct vc4_hdmi *hdmi; - struct vc4_hdmi_encoder *vc4_hdmi_encoder; + struct drm_encoder *encoder; struct device_node *ddc_node; u32 value; int ret; @@ -1229,14 +1228,10 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) if (!hdmi) return -ENOMEM;

- vc4_hdmi_encoder = devm_kzalloc(dev, sizeof(*vc4_hdmi_encoder), - GFP_KERNEL); - if (!vc4_hdmi_encoder) - return -ENOMEM; - vc4_hdmi_encoder->base.type = VC4_ENCODER_TYPE_HDMI0; - hdmi->encoder = &vc4_hdmi_encoder->base.base; - hdmi->pdev = pdev; + encoder = &hdmi->encoder.base.base; + encoder->base.type = VC4_ENCODER_TYPE_HDMI0; + hdmi->hdmicore_regs = vc4_ioremap_regs(pdev, 0); if (IS_ERR(hdmi->hdmicore_regs)) return PTR_ERR(hdmi->hdmicore_regs); @@ -1322,15 +1317,13 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) } pm_runtime_enable(dev);

- drm_simple_encoder_init(drm, hdmi->encoder, DRM_MODE_ENCODER_TMDS); - drm_encoder_helper_add(hdmi->encoder, &vc4_hdmi_encoder_helper_funcs); + drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); + drm_encoder_helper_add(encoder, &vc4_hdmi_encoder_helper_funcs);

- hdmi->connector = - vc4_hdmi_connector_init(drm, hdmi->encoder, hdmi->ddc); - if (IS_ERR(hdmi->connector)) { - ret = PTR_ERR(hdmi->connector); + ret = vc4_hdmi_connector_init(drm, hdmi, hdmi->ddc); + if (ret) goto err_destroy_encoder; - } + #ifdef CONFIG_DRM_VC4_HDMI_CEC hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops, vc4, "vc4", @@ -1340,7 +1333,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) if (ret < 0) goto err_destroy_conn;

- cec_fill_conn_info_from_drm(&conn_info, hdmi->connector); + cec_fill_conn_info_from_drm(&conn_info, &hdmi->connector.base); cec_s_conn_info(hdmi->cec_adap, &conn_info);

HDMI_WRITE(VC4_HDMI_CPU_MASK_SET, 0xffffffff); @@ -1377,10 +1370,10 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) err_delete_cec_adap: cec_delete_adapter(hdmi->cec_adap); err_destroy_conn: - vc4_hdmi_connector_destroy(hdmi->connector); + vc4_hdmi_connector_destroy(&hdmi->connector.base); #endif err_destroy_encoder: - drm_encoder_cleanup(hdmi->encoder); + drm_encoder_cleanup(encoder); err_unprepare_hsm: clk_disable_unprepare(hdmi->hsm_clock); pm_runtime_disable(dev); @@ -1398,8 +1391,8 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master, struct vc4_hdmi *hdmi = vc4->hdmi;

cec_unregister_adapter(hdmi->cec_adap); - vc4_hdmi_connector_destroy(hdmi->connector); - drm_encoder_cleanup(hdmi->encoder); + vc4_hdmi_connector_destroy(&hdmi->connector.base); + drm_encoder_cleanup(&hdmi->encoder.base.base);

clk_disable_unprepare(hdmi->hsm_clock); pm_runtime_disable(dev); diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index 5ec5d1f6b1e6..17079a39f1b1 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -8,6 +8,36 @@

#include "vc4_drv.h"

+/* VC4 HDMI encoder KMS struct */ +struct vc4_hdmi_encoder { + struct vc4_encoder base; + bool hdmi_monitor; + bool limited_rgb_range; +}; + +static inline struct vc4_hdmi_encoder * +to_vc4_hdmi_encoder(struct drm_encoder *encoder) +{ + return container_of(encoder, struct vc4_hdmi_encoder, base.base); +} + +/* VC4 HDMI connector KMS struct */ +struct vc4_hdmi_connector { + struct drm_connector base; + + /* Since the connector is attached to just the one encoder, + * this is the reference to it so we can do the best_encoder() + * hook. + */ + struct drm_encoder *encoder; +}; + +static inline struct vc4_hdmi_connector * +to_vc4_hdmi_connector(struct drm_connector *connector) +{ + return container_of(connector, struct vc4_hdmi_connector, base); +} + /* HDMI audio information */ struct vc4_hdmi_audio { struct snd_soc_card card; @@ -25,8 +55,8 @@ struct vc4_hdmi_audio { struct vc4_hdmi { struct platform_device *pdev;

- struct drm_encoder *encoder; - struct drm_connector *connector; + struct vc4_hdmi_encoder encoder; + struct vc4_hdmi_connector connector;

struct vc4_hdmi_audio audio;

@@ -53,34 +83,4 @@ struct vc4_hdmi { #define HD_READ(offset) readl(vc4->hdmi->hd_regs + offset) #define HD_WRITE(offset, val) writel(val, vc4->hdmi->hd_regs + offset)

-/* VC4 HDMI encoder KMS struct */ -struct vc4_hdmi_encoder { - struct vc4_encoder base; - bool hdmi_monitor; - bool limited_rgb_range; -}; - -static inline struct vc4_hdmi_encoder * -to_vc4_hdmi_encoder(struct drm_encoder *encoder) -{ - return container_of(encoder, struct vc4_hdmi_encoder, base.base); -} - -/* VC4 HDMI connector KMS struct */ -struct vc4_hdmi_connector { - struct drm_connector base; - - /* Since the connector is attached to just the one encoder, - * this is the reference to it so we can do the best_encoder() - * hook. - */ - struct drm_encoder *encoder; -}; - -static inline struct vc4_hdmi_connector * -to_vc4_hdmi_connector(struct drm_connector *connector) -{ - return container_of(connector, struct vc4_hdmi_connector, base); -} - #endif /* _VC4_HDMI_H_ */

Now that we are passing the vc4_hdmi structure to the connector init function, we can simply use the pointer in that structure instead of having the pointer as an argument.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index c1cb8790b552..a2f848632e8d 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -192,8 +192,7 @@ static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = };

static int vc4_hdmi_connector_init(struct drm_device *dev, - struct vc4_hdmi *vc4_hdmi, - struct i2c_adapter *ddc) + struct vc4_hdmi *vc4_hdmi) { struct vc4_hdmi_connector *hdmi_connector = &vc4_hdmi->connector; struct drm_connector *connector = &hdmi_connector->base; @@ -205,7 +204,7 @@ static int vc4_hdmi_connector_init(struct drm_device *dev, drm_connector_init_with_ddc(dev, connector, &vc4_hdmi_connector_funcs, DRM_MODE_CONNECTOR_HDMIA, - ddc); + vc4_hdmi->ddc); drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs);

/* Create and attach TV margin props to this connector. */ @@ -1320,7 +1319,7 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data) drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); drm_encoder_helper_add(encoder, &vc4_hdmi_encoder_helper_funcs);

- ret = vc4_hdmi_connector_init(drm, hdmi, hdmi->ddc); + ret = vc4_hdmi_connector_init(drm, hdmi); if (ret) goto err_destroy_encoder;

The current driver only supports a single HDMI controller, and part of the issue is that the main vc4_dev structure holds a pointer to its (only) HDMI controller, and the HDMI registers accessors will use it to retrieve the mapped addresses.

Let's modify those accessors to use directly the vc4_hdmi structure so that we can eventually get rid of that single global pointer.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 24 +++++++++--------------- drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++---- 2 files changed, 13 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 38a14acf73e7..755b3e99a7af 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -123,6 +123,7 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) { struct drm_device *dev = connector->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi;

if (vc4->hdmi->hpd_gpio) { if (gpio_get_value_cansleep(vc4->hdmi->hpd_gpio) ^ @@ -230,6 +231,7 @@ static int vc4_hdmi_stop_packet(struct drm_encoder *encoder, { struct drm_device *dev = encoder->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi; u32 packet_id = type - 0x80;

HDMI_WRITE(VC4_HDMI_RAM_PACKET_CONFIG, @@ -244,6 +246,7 @@ static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder, { struct drm_device *dev = encoder->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi; u32 packet_id = frame->any.type - 0x80; u32 packet_reg = VC4_HDMI_RAM_PACKET(packet_id); uint8_t buffer[VC4_HDMI_PACKET_STRIDE]; @@ -623,9 +626,6 @@ static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = { /* HDMI audio codec callbacks */ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi) { - struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; - struct drm_device *drm = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(drm); u32 hsm_clock = clk_get_rate(vc4_hdmi->hsm_clock); unsigned long n, m;

@@ -645,8 +645,6 @@ static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi) { struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; struct drm_crtc *crtc = encoder->crtc; - struct drm_device *drm = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(drm); const struct drm_display_mode *mode = &crtc->state->adjusted_mode; u32 samplerate = vc4_hdmi->audio.samplerate; u32 n, cts; @@ -683,7 +681,6 @@ static int vc4_hdmi_audio_startup(struct snd_pcm_substream *substream, struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai); struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; struct drm_connector *connector = &vc4_hdmi->connector.base; - struct vc4_dev *vc4 = to_vc4_dev(encoder->dev); int ret;

if (vc4_hdmi->audio.substream && vc4_hdmi->audio.substream != substream) @@ -714,9 +711,7 @@ static int vc4_hdmi_audio_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi) { struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; - struct drm_device *drm = encoder->dev; struct device *dev = &vc4_hdmi->pdev->dev; - struct vc4_dev *vc4 = to_vc4_dev(drm); int ret;

ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO); @@ -747,10 +742,7 @@ static int vc4_hdmi_audio_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai); - struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; - struct drm_device *drm = encoder->dev; struct device *dev = &vc4_hdmi->pdev->dev; - struct vc4_dev *vc4 = to_vc4_dev(drm); u32 audio_packet_config, channel_mask; u32 channel_map, i;

@@ -821,8 +813,6 @@ static int vc4_hdmi_audio_trigger(struct snd_pcm_substream *substream, int cmd, { struct vc4_hdmi *vc4_hdmi = dai_to_hdmi(dai); struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; - struct drm_device *drm = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(drm);

switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -1082,7 +1072,8 @@ static irqreturn_t vc4_cec_irq_handler_thread(int irq, void *priv)

static void vc4_cec_read_msg(struct vc4_dev *vc4, u32 cntrl1) { - struct cec_msg *msg = &vc4->hdmi->cec_rx_msg; + struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct cec_msg *msg = &vc4_hdmi->cec_rx_msg; unsigned int i;

msg->len = 1 + ((cntrl1 & VC4_HDMI_CEC_REC_WRD_CNT_MASK) >> @@ -1128,6 +1119,7 @@ static irqreturn_t vc4_cec_irq_handler(int irq, void *priv) static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable) { struct vc4_dev *vc4 = cec_get_drvdata(adap); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi; /* clock period in microseconds */ const u32 usecs = 1000000 / CEC_CLOCK_FREQ; u32 val = HDMI_READ(VC4_HDMI_CEC_CNTRL_5); @@ -1171,6 +1163,7 @@ static int vc4_hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable) static int vc4_hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr) { struct vc4_dev *vc4 = cec_get_drvdata(adap); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi;

HDMI_WRITE(VC4_HDMI_CEC_CNTRL_1, (HDMI_READ(VC4_HDMI_CEC_CNTRL_1) & ~VC4_HDMI_CEC_ADDR_MASK) | @@ -1182,6 +1175,7 @@ static int vc4_hdmi_cec_adap_transmit(struct cec_adapter *adap, u8 attempts, u32 signal_free_time, struct cec_msg *msg) { struct vc4_dev *vc4 = cec_get_drvdata(adap); + struct vc4_hdmi *vc4_hdmi = vc4->hdmi; u32 val; unsigned int i;

@@ -1392,7 +1386,7 @@ static void vc4_hdmi_unbind(struct device *dev, struct device *master,

cec_unregister_adapter(vc4_hdmi->cec_adap); vc4_hdmi_connector_destroy(&vc4_hdmi->connector.base); - vc4_hdmi_encoder_destroy(&vc4_hdmi->encoder.base.base); + drm_encoder_cleanup(&vc4_hdmi->encoder.base.base);

clk_disable_unprepare(vc4_hdmi->hsm_clock); pm_runtime_disable(dev); diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index 17079a39f1b1..cdc9d90f62ac 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -78,9 +78,9 @@ struct vc4_hdmi { struct debugfs_regset32 hd_regset; };

-#define HDMI_READ(offset) readl(vc4->hdmi->hdmicore_regs + offset) -#define HDMI_WRITE(offset, val) writel(val, vc4->hdmi->hdmicore_regs + offset) -#define HD_READ(offset) readl(vc4->hdmi->hd_regs + offset) -#define HD_WRITE(offset, val) writel(val, vc4->hdmi->hd_regs + offset) +#define HDMI_READ(offset) readl(vc4_hdmi->hdmicore_regs + offset) +#define HDMI_WRITE(offset, val) writel(val, vc4_hdmi->hdmicore_regs + offset) +#define HD_READ(offset) readl(vc4_hdmi->hd_regs + offset) +#define HD_WRITE(offset, val) writel(val, vc4_hdmi->hd_regs + offset)

#endif /* _VC4_HDMI_H_ */

Whenever the code needs to access the vc4_hdmi structure from a DRM connector or encoder, it first accesses the drm_device associated to the connector, then retrieve the drm_dev private data which gives it a pointer to our vc4_dev, and will finally follow the vc4_hdmi pointer in that structure.

That will also give us some trouble when having multiple controllers, but now that we have our encoder and connector structures that are part of vc4_hdmi, we can simply call container_of on the DRM connector or encoder and retrieve the vc4_hdmi structure directly.

Signed-off-by: Maxime Ripard maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 41 ++++++++++------------------------- drivers/gpu/drm/vc4/vc4_hdmi.h | 16 ++++++++++++++- 2 files changed, 28 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 50c67d674331..4a28e0c0c814 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -121,9 +121,7 @@ static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused) static enum drm_connector_status vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) { - struct drm_device *dev = connector->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);

if (vc4_hdmi->hpd_gpio) { if (gpio_get_value_cansleep(vc4_hdmi->hpd_gpio) ^ @@ -150,17 +148,13 @@ static void vc4_hdmi_connector_destroy(struct drm_connector *connector)

static int vc4_hdmi_connector_get_modes(struct drm_connector *connector) { - struct vc4_hdmi_connector *vc4_connector = - to_vc4_hdmi_connector(connector); - struct drm_encoder *encoder = vc4_connector->encoder; - struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder); - struct drm_device *dev = connector->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); + struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); + struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder; int ret = 0; struct edid *edid;

- edid = drm_get_edid(connector, vc4->hdmi->ddc); - cec_s_phys_addr_from_edid(vc4->hdmi->cec_adap, edid); + edid = drm_get_edid(connector, vc4_hdmi->ddc); + cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid); if (!edid) return -ENODEV;

@@ -229,9 +223,7 @@ static int vc4_hdmi_connector_init(struct drm_device *dev, static int vc4_hdmi_stop_packet(struct drm_encoder *encoder, enum hdmi_infoframe_type type) { - struct drm_device *dev = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); u32 packet_id = type - 0x80;

HDMI_WRITE(VC4_HDMI_RAM_PACKET_CONFIG, @@ -244,9 +236,7 @@ static int vc4_hdmi_stop_packet(struct drm_encoder *encoder, static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder, union hdmi_infoframe *frame) { - struct drm_device *dev = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); u32 packet_id = frame->any.type - 0x80; u32 packet_reg = VC4_HDMI_RAM_PACKET(packet_id); uint8_t buffer[VC4_HDMI_PACKET_STRIDE]; @@ -292,9 +282,8 @@ static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder,

static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) { + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder); - struct vc4_dev *vc4 = encoder->dev->dev_private; - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; struct drm_connector *connector = &vc4_hdmi->connector.base; struct drm_connector_state *cstate = connector->state; struct drm_crtc *crtc = encoder->crtc; @@ -338,9 +327,7 @@ static void vc4_hdmi_set_spd_infoframe(struct drm_encoder *encoder)

static void vc4_hdmi_set_audio_infoframe(struct drm_encoder *encoder) { - struct drm_device *drm = encoder->dev; - struct vc4_dev *vc4 = drm->dev_private; - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); union hdmi_infoframe frame; int ret;

@@ -362,9 +349,7 @@ static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)

static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder) { - struct drm_device *dev = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); int ret;

HDMI_WRITE(VC4_HDMI_RAM_PACKET_CONFIG, 0); @@ -383,10 +368,8 @@ static void vc4_hdmi_encoder_disable(struct drm_encoder *encoder) static void vc4_hdmi_encoder_enable(struct drm_encoder *encoder) { struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode; - struct vc4_hdmi_encoder *vc4_encoder = to_vc4_hdmi_encoder(encoder); - struct drm_device *dev = encoder->dev; - struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_hdmi *vc4_hdmi = vc4->hdmi; + struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder); + struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder; bool debug_dump_regs = false; bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC; bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC; diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index cdc9d90f62ac..749a807cd1f3 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -78,6 +78,22 @@ struct vc4_hdmi { struct debugfs_regset32 hd_regset; };

+static inline struct vc4_hdmi * +connector_to_vc4_hdmi(struct drm_connector *connector) +{ + struct vc4_hdmi_connector *_connector = to_vc4_hdmi_connector(connector); + + return container_of(_connector, struct vc4_hdmi, connector); +} + +static inline struct vc4_hdmi * +encoder_to_vc4_hdmi(struct drm_encoder *encoder) +{ + struct vc4_hdmi_encoder *_encoder = to_vc4_hdmi_encoder(encoder); + + return container_of(_encoder, struct vc4_hdmi, encoder); +} + #define HDMI_READ(offset) readl(vc4_hdmi->hdmicore_regs + offset) #define HDMI_WRITE(offset, val) writel(val, vc4_hdmi->hdmicore_regs + offset) #define HD_READ(offset) readl(vc4_hdmi->hd_regs + offset)