--- /dev/null
+Allwinner A10 Display Pipeline
+==============================
+
+The Allwinner A10 Display pipeline is composed of several components
+that are going to be documented below:
+
+TV Encoder
+----------
+
+The TV Encoder supports the composite and VGA output. It is one end of
+the pipeline.
+
+Required properties:
+ - compatible: value should be "allwinner,sun4i-a10-tv-encoder".
+ - reg: base address and size of memory-mapped region
+ - clocks: the clocks driving the TV encoder
+ - resets: phandle to the reset controller driving the encoder
+
+- ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoint.
+
+TCON
+----
+
+The TCON acts as a timing controller for RGB, LVDS and TV interfaces.
+
+Required properties:
+ - compatible: value should be "allwinner,sun5i-a13-tcon".
+ - reg: base address and size of memory-mapped region
+ - interrupts: interrupt associated to this IP
+ - clocks: phandles to the clocks feeding the TCON. Three are needed:
+ - 'ahb': the interface clocks
+ - 'tcon-ch0': The clock driving the TCON channel 0
+ - 'tcon-ch1': The clock driving the TCON channel 1
+ - resets: phandles to the reset controllers driving the encoder
+ - "lcd": the reset line for the TCON channel 0
+
+ - clock-names: the clock names mentioned above
+ - reset-names: the reset names mentioned above
+ - clock-output-names: Name of the pixel clock created
+
+- ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoint, the second one the output
+
+ The output should have two endpoints. The first is the block
+ connected to the TCON channel 0 (usually a panel or a bridge), the
+ second the block connected to the TCON channel 1 (usually the TV
+ encoder)
+
+
+Display Engine Backend
+----------------------
+
+The display engine backend exposes layers and sprites to the
+system.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun5i-a13-display-backend
+ - reg: base address and size of the memory-mapped region.
+ - clocks: phandles to the clocks feeding the frontend and backend
+ * ahb: the backend interface clock
+ * mod: the backend module clock
+ * ram: the backend DRAM clock
+ - clock-names: the clock names mentioned above
+ - resets: phandles to the reset controllers driving the backend
+
+- ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoints, the second one the output
+
+Display Engine Frontend
+-----------------------
+
+The display engine frontend does formats conversion, scaling,
+deinterlacing and color space conversion.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun5i-a13-display-frontend
+ - reg: base address and size of the memory-mapped region.
+ - interrupts: interrupt associated to this IP
+ - clocks: phandles to the clocks feeding the frontend and backend
+ * ahb: the backend interface clock
+ * mod: the backend module clock
+ * ram: the backend DRAM clock
+ - clock-names: the clock names mentioned above
+ - resets: phandles to the reset controllers driving the backend
+
+- ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoints, the second one the outputs
+
+
+Display Engine Pipeline
+-----------------------
+
+The display engine pipeline (and its entry point, since it can be
+either directly the backend or the frontend) is represented as an
+extra node.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun5i-a13-display-engine
+
+ - allwinner,pipelines: list of phandle to the display engine
+ frontends available.
+
+Example:
+
+panel: panel {
+ compatible = "olimex,lcd-olinuxino-43-ts";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel_input: endpoint {
+ remote-endpoint = <&tcon0_out_panel>;
+ };
+ };
+};
+
+tve0: tv-encoder@01c0a000 {
+ compatible = "allwinner,sun4i-a10-tv-encoder";
+ reg = <0x01c0a000 0x1000>;
+ clocks = <&ahb_gates 34>;
+ resets = <&tcon_ch0_clk 0>;
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tve0_in_tcon0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&tcon0_out_tve0>;
+ };
+ };
+};
+
+tcon0: lcd-controller@1c0c000 {
+ compatible = "allwinner,sun5i-a13-tcon";
+ reg = <0x01c0c000 0x1000>;
+ interrupts = <44>;
+ resets = <&tcon_ch0_clk 1>;
+ reset-names = "lcd";
+ clocks = <&ahb_gates 36>,
+ <&tcon_ch0_clk>,
+ <&tcon_ch1_clk>;
+ clock-names = "ahb",
+ "tcon-ch0",
+ "tcon-ch1";
+ clock-output-names = "tcon-pixel-clock";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tcon0_in: port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ tcon0_in_be0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&be0_out_tcon0>;
+ };
+ };
+
+ tcon0_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ tcon0_out_panel: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&panel_input>;
+ };
+
+ tcon0_out_tve0: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&tve0_in_tcon0>;
+ };
+ };
+ };
+};
+
+fe0: display-frontend@1e00000 {
+ compatible = "allwinner,sun5i-a13-display-frontend";
+ reg = <0x01e00000 0x20000>;
+ interrupts = <47>;
+ clocks = <&ahb_gates 46>, <&de_fe_clk>,
+ <&dram_gates 25>;
+ clock-names = "ahb", "mod",
+ "ram";
+ resets = <&de_fe_clk>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ fe0_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ fe0_out_be0: endpoint {
+ remote-endpoint = <&be0_in_fe0>;
+ };
+ };
+ };
+};
+
+be0: display-backend@1e60000 {
+ compatible = "allwinner,sun5i-a13-display-backend";
+ reg = <0x01e60000 0x10000>;
+ clocks = <&ahb_gates 44>, <&de_be_clk>,
+ <&dram_gates 26>;
+ clock-names = "ahb", "mod",
+ "ram";
+ resets = <&de_be_clk>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ be0_in: port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ be0_in_fe0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&fe0_out_be0>;
+ };
+ };
+
+ be0_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ be0_out_tcon0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&tcon0_in_be0>;
+ };
+ };
+ };
+};
+
+display-engine {
+ compatible = "allwinner,sun5i-a13-display-engine";
+ allwinner,pipelines = <&fe0>;
+};
F: drivers/gpu/drm/atmel-hlcdc/
F: Documentation/devicetree/bindings/drm/atmel/
+DRM DRIVERS FOR ALLWINNER A10
+M: Maxime Ripard <maxime.ripard@free-electrons.com>
+L: dri-devel@lists.freedesktop.org
+S: Supported
+F: drivers/gpu/drm/sun4i/
+F: Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+
DRM DRIVERS FOR EXYNOS
M: Inki Dae <inki.dae@samsung.com>
M: Joonyoung Shim <jy0922.shim@samsung.com>
source "drivers/gpu/drm/shmobile/Kconfig"
+source "drivers/gpu/drm/sun4i/Kconfig"
+
source "drivers/gpu/drm/omapdrm/Kconfig"
source "drivers/gpu/drm/tilcdc/Kconfig"
-#
+
# Makefile for the drm device driver. This driver provides support for the
# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
obj-$(CONFIG_DRM_RCAR_DU) += rcar-du/
obj-$(CONFIG_DRM_SHMOBILE) +=shmobile/
obj-y += omapdrm/
+obj-$(CONFIG_DRM_SUN4I) += sun4i/
obj-y += tilcdc/
obj-$(CONFIG_DRM_QXL) += qxl/
obj-$(CONFIG_DRM_BOCHS) += bochs/
--- /dev/null
+config DRM_SUN4I
+ tristate "DRM Support for Allwinner A10 Display Engine"
+ depends on DRM && ARM
+ depends on ARCH_SUNXI || COMPILE_TEST
+ select DRM_GEM_CMA_HELPER
+ select DRM_KMS_HELPER
+ select DRM_KMS_CMA_HELPER
+ select DRM_PANEL
+ select REGMAP_MMIO
+ select VIDEOMODE_HELPERS
+ help
+ Choose this option if you have an Allwinner SoC with a
+ Display Engine. If M is selected the module will be called
+ sun4i-drm.
--- /dev/null
+sun4i-drm-y += sun4i_crtc.o
+sun4i-drm-y += sun4i_drv.o
+sun4i-drm-y += sun4i_framebuffer.o
+sun4i-drm-y += sun4i_layer.o
+
+sun4i-tcon-y += sun4i_tcon.o
+sun4i-tcon-y += sun4i_rgb.o
+sun4i-tcon-y += sun4i_dotclock.o
+
+obj-$(CONFIG_DRM_SUN4I) += sun4i-drm.o sun4i-tcon.o
+obj-$(CONFIG_DRM_SUN4I) += sun4i_backend.o
+
+obj-$(CONFIG_DRM_SUN4I) += sun4i_tv.o
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_plane_helper.h>
+
+#include <linux/component.h>
+#include <linux/reset.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+
+static u32 sunxi_rgb2yuv_coef[12] = {
+ 0x00000107, 0x00000204, 0x00000064, 0x00000108,
+ 0x00003f69, 0x00003ed6, 0x000001c1, 0x00000808,
+ 0x000001c1, 0x00003e88, 0x00003fb8, 0x00000808
+};
+
+void sun4i_backend_apply_color_correction(struct sun4i_backend *backend)
+{
+ int i;
+
+ DRM_DEBUG_DRIVER("Applying RGB to YUV color correction\n");
+
+ /* Set color correction */
+ regmap_write(backend->regs, SUN4I_BACKEND_OCCTL_REG,
+ SUN4I_BACKEND_OCCTL_ENABLE);
+
+ for (i = 0; i < 12; i++)
+ regmap_write(backend->regs, SUN4I_BACKEND_OCRCOEF_REG(i),
+ sunxi_rgb2yuv_coef[i]);
+}
+EXPORT_SYMBOL(sun4i_backend_apply_color_correction);
+
+void sun4i_backend_disable_color_correction(struct sun4i_backend *backend)
+{
+ DRM_DEBUG_DRIVER("Disabling color correction\n");
+
+ /* Disable color correction */
+ regmap_update_bits(backend->regs, SUN4I_BACKEND_OCCTL_REG,
+ SUN4I_BACKEND_OCCTL_ENABLE, 0);
+}
+EXPORT_SYMBOL(sun4i_backend_disable_color_correction);
+
+void sun4i_backend_commit(struct sun4i_backend *backend)
+{
+ DRM_DEBUG_DRIVER("Committing changes\n");
+
+ regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
+ SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS |
+ SUN4I_BACKEND_REGBUFFCTL_LOADCTL);
+}
+EXPORT_SYMBOL(sun4i_backend_commit);
+
+void sun4i_backend_layer_enable(struct sun4i_backend *backend,
+ int layer, bool enable)
+{
+ u32 val;
+
+ DRM_DEBUG_DRIVER("Enabling layer %d\n", layer);
+
+ if (enable)
+ val = SUN4I_BACKEND_MODCTL_LAY_EN(layer);
+ else
+ val = 0;
+
+ regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+ SUN4I_BACKEND_MODCTL_LAY_EN(layer), val);
+}
+EXPORT_SYMBOL(sun4i_backend_layer_enable);
+
+static int sun4i_backend_drm_format_to_layer(u32 format, u32 *mode)
+{
+ switch (format) {
+ case DRM_FORMAT_ARGB8888:
+ *mode = SUN4I_BACKEND_LAY_FBFMT_ARGB8888;
+ break;
+
+ case DRM_FORMAT_XRGB8888:
+ *mode = SUN4I_BACKEND_LAY_FBFMT_XRGB8888;
+ break;
+
+ case DRM_FORMAT_RGB888:
+ *mode = SUN4I_BACKEND_LAY_FBFMT_RGB888;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int sun4i_backend_update_layer_coord(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+
+ DRM_DEBUG_DRIVER("Updating layer %d\n", layer);
+
+ if (plane->type == DRM_PLANE_TYPE_PRIMARY) {
+ DRM_DEBUG_DRIVER("Primary layer, updating global size W: %u H: %u\n",
+ state->crtc_w, state->crtc_h);
+ regmap_write(backend->regs, SUN4I_BACKEND_DISSIZE_REG,
+ SUN4I_BACKEND_DISSIZE(state->crtc_w,
+ state->crtc_h));
+ }
+
+ /* Set the line width */
+ DRM_DEBUG_DRIVER("Layer line width: %d bits\n", fb->pitches[0] * 8);
+ regmap_write(backend->regs, SUN4I_BACKEND_LAYLINEWIDTH_REG(layer),
+ fb->pitches[0] * 8);
+
+ /* Set height and width */
+ DRM_DEBUG_DRIVER("Layer size W: %u H: %u\n",
+ state->crtc_w, state->crtc_h);
+ regmap_write(backend->regs, SUN4I_BACKEND_LAYSIZE_REG(layer),
+ SUN4I_BACKEND_LAYSIZE(state->crtc_w,
+ state->crtc_h));
+
+ /* Set base coordinates */
+ DRM_DEBUG_DRIVER("Layer coordinates X: %d Y: %d\n",
+ state->crtc_x, state->crtc_y);
+ regmap_write(backend->regs, SUN4I_BACKEND_LAYCOOR_REG(layer),
+ SUN4I_BACKEND_LAYCOOR(state->crtc_x,
+ state->crtc_y));
+
+ return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_coord);
+
+int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+ bool interlaced = false;
+ u32 val;
+ int ret;
+
+ if (plane->state->crtc)
+ interlaced = plane->state->crtc->state->adjusted_mode.flags
+ & DRM_MODE_FLAG_INTERLACE;
+
+ regmap_update_bits(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+ SUN4I_BACKEND_MODCTL_ITLMOD_EN,
+ interlaced ? SUN4I_BACKEND_MODCTL_ITLMOD_EN : 0);
+
+ DRM_DEBUG_DRIVER("Switching display backend interlaced mode %s\n",
+ interlaced ? "on" : "off");
+
+ ret = sun4i_backend_drm_format_to_layer(fb->pixel_format, &val);
+ if (ret) {
+ DRM_DEBUG_DRIVER("Invalid format\n");
+ return val;
+ }
+
+ regmap_update_bits(backend->regs, SUN4I_BACKEND_ATTCTL_REG1(layer),
+ SUN4I_BACKEND_ATTCTL_REG1_LAY_FBFMT, val);
+
+ return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_formats);
+
+int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane)
+{
+ struct drm_plane_state *state = plane->state;
+ struct drm_framebuffer *fb = state->fb;
+ struct drm_gem_cma_object *gem;
+ u32 lo_paddr, hi_paddr;
+ dma_addr_t paddr;
+ int bpp;
+
+ /* Get the physical address of the buffer in memory */
+ gem = drm_fb_cma_get_gem_obj(fb, 0);
+
+ DRM_DEBUG_DRIVER("Using GEM @ 0x%x\n", gem->paddr);
+
+ /* Compute the start of the displayed memory */
+ bpp = drm_format_plane_cpp(fb->pixel_format, 0);
+ paddr = gem->paddr + fb->offsets[0];
+ paddr += (state->src_x >> 16) * bpp;
+ paddr += (state->src_y >> 16) * fb->pitches[0];
+
+ DRM_DEBUG_DRIVER("Setting buffer address to 0x%x\n", paddr);
+
+ /* Write the 32 lower bits of the address (in bits) */
+ lo_paddr = paddr << 3;
+ DRM_DEBUG_DRIVER("Setting address lower bits to 0x%x\n", lo_paddr);
+ regmap_write(backend->regs, SUN4I_BACKEND_LAYFB_L32ADD_REG(layer),
+ lo_paddr);
+
+ /* And the upper bits */
+ hi_paddr = paddr >> 29;
+ DRM_DEBUG_DRIVER("Setting address high bits to 0x%x\n", hi_paddr);
+ regmap_update_bits(backend->regs, SUN4I_BACKEND_LAYFB_H4ADD_REG,
+ SUN4I_BACKEND_LAYFB_H4ADD_MSK(layer),
+ SUN4I_BACKEND_LAYFB_H4ADD(layer, hi_paddr));
+
+ return 0;
+}
+EXPORT_SYMBOL(sun4i_backend_update_layer_buffer);
+
+static struct regmap_config sun4i_backend_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = 0x5800,
+};
+
+static int sun4i_backend_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct drm_device *drm = data;
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_backend *backend;
+ struct resource *res;
+ void __iomem *regs;
+ int i, ret;
+
+ backend = devm_kzalloc(dev, sizeof(*backend), GFP_KERNEL);
+ if (!backend)
+ return -ENOMEM;
+ dev_set_drvdata(dev, backend);
+ drv->backend = backend;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs)) {
+ dev_err(dev, "Couldn't map the backend registers\n");
+ return PTR_ERR(regs);
+ }
+
+ backend->regs = devm_regmap_init_mmio(dev, regs,
+ &sun4i_backend_regmap_config);
+ if (IS_ERR(backend->regs)) {
+ dev_err(dev, "Couldn't create the backend0 regmap\n");
+ return PTR_ERR(backend->regs);
+ }
+
+ backend->reset = devm_reset_control_get(dev, NULL);
+ if (IS_ERR(backend->reset)) {
+ dev_err(dev, "Couldn't get our reset line\n");
+ return PTR_ERR(backend->reset);
+ }
+
+ ret = reset_control_deassert(backend->reset);
+ if (ret) {
+ dev_err(dev, "Couldn't deassert our reset line\n");
+ return ret;
+ }
+
+ backend->bus_clk = devm_clk_get(dev, "ahb");
+ if (IS_ERR(backend->bus_clk)) {
+ dev_err(dev, "Couldn't get the backend bus clock\n");
+ ret = PTR_ERR(backend->bus_clk);
+ goto err_assert_reset;
+ }
+ clk_prepare_enable(backend->bus_clk);
+
+ backend->mod_clk = devm_clk_get(dev, "mod");
+ if (IS_ERR(backend->mod_clk)) {
+ dev_err(dev, "Couldn't get the backend module clock\n");
+ ret = PTR_ERR(backend->mod_clk);
+ goto err_disable_bus_clk;
+ }
+ clk_prepare_enable(backend->mod_clk);
+
+ backend->ram_clk = devm_clk_get(dev, "ram");
+ if (IS_ERR(backend->ram_clk)) {
+ dev_err(dev, "Couldn't get the backend RAM clock\n");
+ ret = PTR_ERR(backend->ram_clk);
+ goto err_disable_mod_clk;
+ }
+ clk_prepare_enable(backend->ram_clk);
+
+ /* Reset the registers */
+ for (i = 0x800; i < 0x1000; i += 4)
+ regmap_write(backend->regs, i, 0);
+
+ /* Disable registers autoloading */
+ regmap_write(backend->regs, SUN4I_BACKEND_REGBUFFCTL_REG,
+ SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS);
+
+ /* Enable the backend */
+ regmap_write(backend->regs, SUN4I_BACKEND_MODCTL_REG,
+ SUN4I_BACKEND_MODCTL_DEBE_EN |
+ SUN4I_BACKEND_MODCTL_START_CTL);
+
+ return 0;
+
+err_disable_mod_clk:
+ clk_disable_unprepare(backend->mod_clk);
+err_disable_bus_clk:
+ clk_disable_unprepare(backend->bus_clk);
+err_assert_reset:
+ reset_control_assert(backend->reset);
+ return ret;
+}
+
+static void sun4i_backend_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct sun4i_backend *backend = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(backend->ram_clk);
+ clk_disable_unprepare(backend->mod_clk);
+ clk_disable_unprepare(backend->bus_clk);
+ reset_control_assert(backend->reset);
+}
+
+static struct component_ops sun4i_backend_ops = {
+ .bind = sun4i_backend_bind,
+ .unbind = sun4i_backend_unbind,
+};
+
+static int sun4i_backend_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &sun4i_backend_ops);
+}
+
+static int sun4i_backend_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &sun4i_backend_ops);
+
+ return 0;
+}
+
+static const struct of_device_id sun4i_backend_of_table[] = {
+ { .compatible = "allwinner,sun5i-a13-display-backend" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sun4i_backend_of_table);
+
+static struct platform_driver sun4i_backend_platform_driver = {
+ .probe = sun4i_backend_probe,
+ .remove = sun4i_backend_remove,
+ .driver = {
+ .name = "sun4i-backend",
+ .of_match_table = sun4i_backend_of_table,
+ },
+};
+module_platform_driver(sun4i_backend_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Display Backend Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_BACKEND_H_
+#define _SUN4I_BACKEND_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define SUN4I_BACKEND_MODCTL_REG 0x800
+#define SUN4I_BACKEND_MODCTL_LINE_SEL BIT(29)
+#define SUN4I_BACKEND_MODCTL_ITLMOD_EN BIT(28)
+#define SUN4I_BACKEND_MODCTL_OUT_SEL GENMASK(22, 20)
+#define SUN4I_BACKEND_MODCTL_OUT_LCD (0 << 20)
+#define SUN4I_BACKEND_MODCTL_OUT_FE0 (6 << 20)
+#define SUN4I_BACKEND_MODCTL_OUT_FE1 (7 << 20)
+#define SUN4I_BACKEND_MODCTL_HWC_EN BIT(16)
+#define SUN4I_BACKEND_MODCTL_LAY_EN(l) BIT(8 + l)
+#define SUN4I_BACKEND_MODCTL_OCSC_EN BIT(5)
+#define SUN4I_BACKEND_MODCTL_DFLK_EN BIT(4)
+#define SUN4I_BACKEND_MODCTL_DLP_START_CTL BIT(2)
+#define SUN4I_BACKEND_MODCTL_START_CTL BIT(1)
+#define SUN4I_BACKEND_MODCTL_DEBE_EN BIT(0)
+
+#define SUN4I_BACKEND_BACKCOLOR_REG 0x804
+#define SUN4I_BACKEND_BACKCOLOR(r, g, b) (((r) << 16) | ((g) << 8) | (b))
+
+#define SUN4I_BACKEND_DISSIZE_REG 0x808
+#define SUN4I_BACKEND_DISSIZE(w, h) (((((h) - 1) & 0xffff) << 16) | \
+ (((w) - 1) & 0xffff))
+
+#define SUN4I_BACKEND_LAYSIZE_REG(l) (0x810 + (0x4 * (l)))
+#define SUN4I_BACKEND_LAYSIZE(w, h) (((((h) - 1) & 0x1fff) << 16) | \
+ (((w) - 1) & 0x1fff))
+
+#define SUN4I_BACKEND_LAYCOOR_REG(l) (0x820 + (0x4 * (l)))
+#define SUN4I_BACKEND_LAYCOOR(x, y) ((((u32)(y) & 0xffff) << 16) | \
+ ((u32)(x) & 0xffff))
+
+#define SUN4I_BACKEND_LAYLINEWIDTH_REG(l) (0x840 + (0x4 * (l)))
+
+#define SUN4I_BACKEND_LAYFB_L32ADD_REG(l) (0x850 + (0x4 * (l)))
+
+#define SUN4I_BACKEND_LAYFB_H4ADD_REG 0x860
+#define SUN4I_BACKEND_LAYFB_H4ADD_MSK(l) GENMASK(3 + ((l) * 8), 0)
+#define SUN4I_BACKEND_LAYFB_H4ADD(l, val) ((val) << ((l) * 8))
+
+#define SUN4I_BACKEND_REGBUFFCTL_REG 0x870
+#define SUN4I_BACKEND_REGBUFFCTL_AUTOLOAD_DIS BIT(1)
+#define SUN4I_BACKEND_REGBUFFCTL_LOADCTL BIT(0)
+
+#define SUN4I_BACKEND_CKMAX_REG 0x880
+#define SUN4I_BACKEND_CKMIN_REG 0x884
+#define SUN4I_BACKEND_CKCFG_REG 0x888
+#define SUN4I_BACKEND_ATTCTL_REG0(l) (0x890 + (0x4 * (l)))
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL_MASK BIT(15)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(x) ((x) << 15)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL_MASK GENMASK(11, 10)
+#define SUN4I_BACKEND_ATTCTL_REG0_LAY_PRISEL(x) ((x) << 10)
+
+#define SUN4I_BACKEND_ATTCTL_REG1(l) (0x8a0 + (0x4 * (l)))
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_HSCAFCT GENMASK(15, 14)
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_WSCAFCT GENMASK(13, 12)
+#define SUN4I_BACKEND_ATTCTL_REG1_LAY_FBFMT GENMASK(11, 8)
+#define SUN4I_BACKEND_LAY_FBFMT_1BPP (0 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_2BPP (1 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_4BPP (2 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_8BPP (3 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB655 (4 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB565 (5 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB556 (6 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB1555 (7 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGBA5551 (8 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_XRGB8888 (9 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB8888 (10 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGB888 (11 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_ARGB4444 (12 << 8)
+#define SUN4I_BACKEND_LAY_FBFMT_RGBA4444 (13 << 8)
+
+#define SUN4I_BACKEND_DLCDPCTL_REG 0x8b0
+#define SUN4I_BACKEND_DLCDPFRMBUF_ADDRCTL_REG 0x8b4
+#define SUN4I_BACKEND_DLCDPCOOR_REG0 0x8b8
+#define SUN4I_BACKEND_DLCDPCOOR_REG1 0x8bc
+
+#define SUN4I_BACKEND_INT_EN_REG 0x8c0
+#define SUN4I_BACKEND_INT_FLAG_REG 0x8c4
+#define SUN4I_BACKEND_REG_LOAD_FINISHED BIT(1)
+
+#define SUN4I_BACKEND_HWCCTL_REG 0x8d8
+#define SUN4I_BACKEND_HWCFBCTL_REG 0x8e0
+#define SUN4I_BACKEND_WBCTL_REG 0x8f0
+#define SUN4I_BACKEND_WBADD_REG 0x8f4
+#define SUN4I_BACKEND_WBLINEWIDTH_REG 0x8f8
+#define SUN4I_BACKEND_SPREN_REG 0x900
+#define SUN4I_BACKEND_SPRFMTCTL_REG 0x908
+#define SUN4I_BACKEND_SPRALPHACTL_REG 0x90c
+#define SUN4I_BACKEND_IYUVCTL_REG 0x920
+#define SUN4I_BACKEND_IYUVADD_REG(c) (0x930 + (0x4 * (c)))
+#define SUN4I_BACKEND_IYUVLINEWITDTH_REG(c) (0x940 + (0x4 * (c)))
+#define SUN4I_BACKEND_YGCOEF_REG(c) (0x950 + (0x4 * (c)))
+#define SUN4I_BACKEND_YGCONS_REG 0x95c
+#define SUN4I_BACKEND_URCOEF_REG(c) (0x960 + (0x4 * (c)))
+#define SUN4I_BACKEND_URCONS_REG 0x96c
+#define SUN4I_BACKEND_VBCOEF_REG(c) (0x970 + (0x4 * (c)))
+#define SUN4I_BACKEND_VBCONS_REG 0x97c
+#define SUN4I_BACKEND_KSCTL_REG 0x980
+#define SUN4I_BACKEND_KSBKCOLOR_REG 0x984
+#define SUN4I_BACKEND_KSFSTLINEWIDTH_REG 0x988
+#define SUN4I_BACKEND_KSVSCAFCT_REG 0x98c
+#define SUN4I_BACKEND_KSHSCACOEF_REG(x) (0x9a0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCCTL_REG 0x9c0
+#define SUN4I_BACKEND_OCCTL_ENABLE BIT(0)
+
+#define SUN4I_BACKEND_OCRCOEF_REG(x) (0x9d0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCRCONS_REG 0x9dc
+#define SUN4I_BACKEND_OCGCOEF_REG(x) (0x9e0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCGCONS_REG 0x9ec
+#define SUN4I_BACKEND_OCBCOEF_REG(x) (0x9f0 + (0x4 * (x)))
+#define SUN4I_BACKEND_OCBCONS_REG 0x9fc
+#define SUN4I_BACKEND_SPRCOORCTL_REG(s) (0xa00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRATTCTL_REG(s) (0xb00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRADD_REG(s) (0xc00 + (0x4 * (s)))
+#define SUN4I_BACKEND_SPRLINEWIDTH_REG(s) (0xd00 + (0x4 * (s)))
+
+#define SUN4I_BACKEND_SPRPALTAB_OFF 0x4000
+#define SUN4I_BACKEND_GAMMATAB_OFF 0x4400
+#define SUN4I_BACKEND_HWCPATTERN_OFF 0x4800
+#define SUN4I_BACKEND_HWCCOLORTAB_OFF 0x4c00
+#define SUN4I_BACKEND_PIPE_OFF(p) (0x5000 + (0x400 * (p)))
+
+struct sun4i_backend {
+ struct regmap *regs;
+
+ struct reset_control *reset;
+
+ struct clk *bus_clk;
+ struct clk *mod_clk;
+ struct clk *ram_clk;
+};
+
+void sun4i_backend_apply_color_correction(struct sun4i_backend *backend);
+void sun4i_backend_disable_color_correction(struct sun4i_backend *backend);
+
+void sun4i_backend_commit(struct sun4i_backend *backend);
+
+void sun4i_backend_layer_enable(struct sun4i_backend *backend,
+ int layer, bool enable);
+int sun4i_backend_update_layer_coord(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane);
+int sun4i_backend_update_layer_formats(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane);
+int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
+ int layer, struct drm_plane *plane);
+
+#endif /* _SUN4I_BACKEND_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_modes.h>
+
+#include <linux/clk-provider.h>
+#include <linux/ioport.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+
+#include <video/videomode.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_crtc.h"
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ unsigned long flags;
+
+ if (crtc->state->event) {
+ WARN_ON(drm_crtc_vblank_get(crtc) != 0);
+
+ spin_lock_irqsave(&dev->event_lock, flags);
+ scrtc->event = crtc->state->event;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+ crtc->state->event = NULL;
+ }
+}
+
+static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+ struct sun4i_drv *drv = scrtc->drv;
+
+ DRM_DEBUG_DRIVER("Committing plane changes\n");
+
+ sun4i_backend_commit(drv->backend);
+}
+
+static void sun4i_crtc_disable(struct drm_crtc *crtc)
+{
+ struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+ struct sun4i_drv *drv = scrtc->drv;
+
+ DRM_DEBUG_DRIVER("Disabling the CRTC\n");
+
+ sun4i_tcon_disable(drv->tcon);
+}
+
+static void sun4i_crtc_enable(struct drm_crtc *crtc)
+{
+ struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
+ struct sun4i_drv *drv = scrtc->drv;
+
+ DRM_DEBUG_DRIVER("Enabling the CRTC\n");
+
+ sun4i_tcon_enable(drv->tcon);
+}
+
+static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
+ .atomic_begin = sun4i_crtc_atomic_begin,
+ .atomic_flush = sun4i_crtc_atomic_flush,
+ .disable = sun4i_crtc_disable,
+ .enable = sun4i_crtc_enable,
+};
+
+static const struct drm_crtc_funcs sun4i_crtc_funcs = {
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .destroy = drm_crtc_cleanup,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .set_config = drm_atomic_helper_set_config,
+};
+
+struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_crtc *scrtc;
+ int ret;
+
+ scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL);
+ if (!scrtc)
+ return NULL;
+ scrtc->drv = drv;
+
+ ret = drm_crtc_init_with_planes(drm, &scrtc->crtc,
+ drv->primary,
+ NULL,
+ &sun4i_crtc_funcs,
+ NULL);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't init DRM CRTC\n");
+ return NULL;
+ }
+
+ drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
+
+ return scrtc;
+}
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_CRTC_H_
+#define _SUN4I_CRTC_H_
+
+struct sun4i_crtc {
+ struct drm_crtc crtc;
+ struct drm_pending_vblank_event *event;
+
+ struct sun4i_drv *drv;
+};
+
+static inline struct sun4i_crtc *drm_crtc_to_sun4i_crtc(struct drm_crtc *crtc)
+{
+ return container_of(crtc, struct sun4i_crtc, crtc);
+}
+
+struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm);
+
+#endif /* _SUN4I_CRTC_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2016 Free Electrons
+ * Copyright (C) 2016 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/regmap.h>
+
+#include "sun4i_tcon.h"
+
+struct sun4i_dclk {
+ struct clk_hw hw;
+ struct regmap *regmap;
+};
+
+static inline struct sun4i_dclk *hw_to_dclk(struct clk_hw *hw)
+{
+ return container_of(hw, struct sun4i_dclk, hw);
+}
+
+static void sun4i_dclk_disable(struct clk_hw *hw)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+ regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+ BIT(SUN4I_TCON0_DCLK_GATE_BIT), 0);
+}
+
+static int sun4i_dclk_enable(struct clk_hw *hw)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+ return regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+ BIT(SUN4I_TCON0_DCLK_GATE_BIT),
+ BIT(SUN4I_TCON0_DCLK_GATE_BIT));
+}
+
+static int sun4i_dclk_is_enabled(struct clk_hw *hw)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+ u32 val;
+
+ regmap_read(dclk->regmap, SUN4I_TCON0_DCLK_REG, &val);
+
+ return val & BIT(SUN4I_TCON0_DCLK_GATE_BIT);
+}
+
+static unsigned long sun4i_dclk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+ u32 val;
+
+ regmap_read(dclk->regmap, SUN4I_TCON0_DCLK_REG, &val);
+
+ val >>= SUN4I_TCON0_DCLK_DIV_SHIFT;
+ val &= SUN4I_TCON0_DCLK_DIV_WIDTH;
+
+ if (!val)
+ val = 1;
+
+ return parent_rate / val;
+}
+
+static long sun4i_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ return *parent_rate / DIV_ROUND_CLOSEST(*parent_rate, rate);
+}
+
+static int sun4i_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+ int div = DIV_ROUND_CLOSEST(parent_rate, rate);
+
+ return regmap_update_bits(dclk->regmap, SUN4I_TCON0_DCLK_REG,
+ GENMASK(6, 0), div);
+}
+
+static int sun4i_dclk_get_phase(struct clk_hw *hw)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+ u32 val;
+
+ regmap_read(dclk->regmap, SUN4I_TCON0_IO_POL_REG, &val);
+
+ val >>= 28;
+ val &= 3;
+
+ return val * 120;
+}
+
+static int sun4i_dclk_set_phase(struct clk_hw *hw, int degrees)
+{
+ struct sun4i_dclk *dclk = hw_to_dclk(hw);
+
+ regmap_update_bits(dclk->regmap, SUN4I_TCON0_IO_POL_REG,
+ GENMASK(29, 28),
+ degrees / 120);
+
+ return 0;
+}
+
+static const struct clk_ops sun4i_dclk_ops = {
+ .disable = sun4i_dclk_disable,
+ .enable = sun4i_dclk_enable,
+ .is_enabled = sun4i_dclk_is_enabled,
+
+ .recalc_rate = sun4i_dclk_recalc_rate,
+ .round_rate = sun4i_dclk_round_rate,
+ .set_rate = sun4i_dclk_set_rate,
+
+ .get_phase = sun4i_dclk_get_phase,
+ .set_phase = sun4i_dclk_set_phase,
+};
+
+int sun4i_dclk_create(struct device *dev, struct sun4i_tcon *tcon)
+{
+ const char *clk_name, *parent_name;
+ struct clk_init_data init;
+ struct sun4i_dclk *dclk;
+
+ parent_name = __clk_get_name(tcon->sclk0);
+ of_property_read_string_index(dev->of_node, "clock-output-names", 0,
+ &clk_name);
+
+ dclk = devm_kzalloc(dev, sizeof(*dclk), GFP_KERNEL);
+ if (!dclk)
+ return -ENOMEM;
+
+ init.name = clk_name;
+ init.ops = &sun4i_dclk_ops;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ dclk->regmap = tcon->regs;
+ dclk->hw.init = &init;
+
+ tcon->dclk = clk_register(dev, &dclk->hw);
+ if (IS_ERR(tcon->dclk))
+ return PTR_ERR(tcon->dclk);
+
+ return 0;
+}
+EXPORT_SYMBOL(sun4i_dclk_create);
+
+int sun4i_dclk_free(struct sun4i_tcon *tcon)
+{
+ clk_unregister(tcon->dclk);
+ return 0;
+}
+EXPORT_SYMBOL(sun4i_dclk_free);
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_DOTCLOCK_H_
+#define _SUN4I_DOTCLOCK_H_
+
+struct sun4i_tcon;
+
+int sun4i_dclk_create(struct device *dev, struct sun4i_tcon *tcon);
+int sun4i_dclk_free(struct sun4i_tcon *tcon);
+
+#endif /* _SUN4I_DOTCLOCK_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/component.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+
+#include "sun4i_crtc.h"
+#include "sun4i_drv.h"
+#include "sun4i_framebuffer.h"
+#include "sun4i_layer.h"
+#include "sun4i_tcon.h"
+
+static int sun4i_drv_connector_plug_all(struct drm_device *drm)
+{
+ struct drm_connector *connector, *failed;
+ int ret;
+
+ mutex_lock(&drm->mode_config.mutex);
+ list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
+ ret = drm_connector_register(connector);
+ if (ret) {
+ failed = connector;
+ goto err;
+ }
+ }
+ mutex_unlock(&drm->mode_config.mutex);
+ return 0;
+
+err:
+ list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
+ if (failed == connector)
+ break;
+
+ drm_connector_unregister(connector);
+ }
+ mutex_unlock(&drm->mode_config.mutex);
+
+ return ret;
+}
+
+static int sun4i_drv_enable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Enabling VBLANK on pipe %d\n", pipe);
+
+ sun4i_tcon_enable_vblank(tcon, true);
+
+ return 0;
+}
+
+static void sun4i_drv_disable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Disabling VBLANK on pipe %d\n", pipe);
+
+ sun4i_tcon_enable_vblank(tcon, false);
+}
+
+static const struct file_operations sun4i_drv_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = no_llseek,
+ .mmap = drm_gem_cma_mmap,
+};
+
+static struct drm_driver sun4i_drv_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
+
+ /* Generic Operations */
+ .fops = &sun4i_drv_fops,
+ .name = "sun4i-drm",
+ .desc = "Allwinner sun4i Display Engine",
+ .date = "20150629",
+ .major = 1,
+ .minor = 0,
+
+ /* GEM Operations */
+ .dumb_create = drm_gem_cma_dumb_create,
+ .dumb_destroy = drm_gem_dumb_destroy,
+ .dumb_map_offset = drm_gem_cma_dumb_map_offset,
+ .gem_free_object = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+
+ /* PRIME Operations */
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+
+ /* Frame Buffer Operations */
+
+ /* VBlank Operations */
+ .get_vblank_counter = drm_vblank_count,
+ .enable_vblank = sun4i_drv_enable_vblank,
+ .disable_vblank = sun4i_drv_disable_vblank,
+};
+
+static int sun4i_drv_bind(struct device *dev)
+{
+ struct drm_device *drm;
+ struct sun4i_drv *drv;
+ int ret;
+
+ drm = drm_dev_alloc(&sun4i_drv_driver, dev);
+ if (!drm)
+ return -ENOMEM;
+
+ ret = drm_dev_set_unique(drm, dev_name(drm->dev));
+ if (ret)
+ goto free_drm;
+
+ drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL);
+ if (!drv) {
+ ret = -ENOMEM;
+ goto free_drm;
+ }
+ drm->dev_private = drv;
+
+ drm_vblank_init(drm, 1);
+ drm_mode_config_init(drm);
+
+ ret = component_bind_all(drm->dev, drm);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't bind all pipelines components\n");
+ goto free_drm;
+ }
+
+ /* Create our layers */
+ drv->layers = sun4i_layers_init(drm);
+ if (!drv->layers) {
+ dev_err(drm->dev, "Couldn't create the planes\n");
+ ret = -EINVAL;
+ goto free_drm;
+ }
+
+ /* Create our CRTC */
+ drv->crtc = sun4i_crtc_init(drm);
+ if (!drv->crtc) {
+ dev_err(drm->dev, "Couldn't create the CRTC\n");
+ ret = -EINVAL;
+ goto free_drm;
+ }
+ drm->irq_enabled = true;
+
+ /* Create our framebuffer */
+ drv->fbdev = sun4i_framebuffer_init(drm);
+ if (IS_ERR(drv->fbdev)) {
+ dev_err(drm->dev, "Couldn't create our framebuffer\n");
+ ret = PTR_ERR(drv->fbdev);
+ goto free_drm;
+ }
+
+ /* Enable connectors polling */
+ drm_kms_helper_poll_init(drm);
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ goto free_drm;
+
+ ret = sun4i_drv_connector_plug_all(drm);
+ if (ret)
+ goto unregister_drm;
+
+ return 0;
+
+unregister_drm:
+ drm_dev_unregister(drm);
+free_drm:
+ drm_dev_unref(drm);
+ return ret;
+}
+
+static void sun4i_drv_unbind(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+
+ drm_dev_unregister(drm);
+ drm_kms_helper_poll_fini(drm);
+ sun4i_framebuffer_free(drm);
+ drm_vblank_cleanup(drm);
+ drm_dev_unref(drm);
+}
+
+static const struct component_master_ops sun4i_drv_master_ops = {
+ .bind = sun4i_drv_bind,
+ .unbind = sun4i_drv_unbind,
+};
+
+static bool sun4i_drv_node_is_frontend(struct device_node *node)
+{
+ return of_device_is_compatible(node,
+ "allwinner,sun5i-a13-display-frontend");
+}
+
+static bool sun4i_drv_node_is_tcon(struct device_node *node)
+{
+ return of_device_is_compatible(node, "allwinner,sun5i-a13-tcon");
+}
+
+static int compare_of(struct device *dev, void *data)
+{
+ DRM_DEBUG_DRIVER("Comparing of node %s with %s\n",
+ of_node_full_name(dev->of_node),
+ of_node_full_name(data));
+
+ return dev->of_node == data;
+}
+
+static int sun4i_drv_add_endpoints(struct device *dev,
+ struct component_match **match,
+ struct device_node *node)
+{
+ struct device_node *port, *ep, *remote;
+ int count = 0;
+
+ /*
+ * We don't support the frontend for now, so we will never
+ * have a device bound. Just skip over it, but we still want
+ * the rest our pipeline to be added.
+ */
+ if (!sun4i_drv_node_is_frontend(node) &&
+ !of_device_is_available(node))
+ return 0;
+
+ if (!sun4i_drv_node_is_frontend(node)) {
+ /* Add current component */
+ DRM_DEBUG_DRIVER("Adding component %s\n",
+ of_node_full_name(node));
+ component_match_add(dev, match, compare_of, node);
+ count++;
+ }
+
+ /* Inputs are listed first, then outputs */
+ port = of_graph_get_port_by_id(node, 1);
+ if (!port) {
+ DRM_DEBUG_DRIVER("No output to bind\n");
+ return count;
+ }
+
+ for_each_available_child_of_node(port, ep) {
+ remote = of_graph_get_remote_port_parent(ep);
+ if (!remote) {
+ DRM_DEBUG_DRIVER("Error retrieving the output node\n");
+ of_node_put(remote);
+ continue;
+ }
+
+ /*
+ * If the node is our TCON, the first port is used for our
+ * panel, and will not be part of the
+ * component framework.
+ */
+ if (sun4i_drv_node_is_tcon(node)) {
+ struct of_endpoint endpoint;
+
+ if (of_graph_parse_endpoint(ep, &endpoint)) {
+ DRM_DEBUG_DRIVER("Couldn't parse endpoint\n");
+ continue;
+ }
+
+ if (!endpoint.id) {
+ DRM_DEBUG_DRIVER("Endpoint is our panel... skipping\n");
+ continue;
+ }
+ }
+
+ /* Walk down our tree */
+ count += sun4i_drv_add_endpoints(dev, match, remote);
+
+ of_node_put(remote);
+ }
+
+ return count;
+}
+
+static int sun4i_drv_probe(struct platform_device *pdev)
+{
+ struct component_match *match = NULL;
+ struct device_node *np = pdev->dev.of_node;
+ int i, count = 0;
+
+ for (i = 0;; i++) {
+ struct device_node *pipeline = of_parse_phandle(np,
+ "allwinner,pipelines",
+ i);
+ if (!pipeline)
+ break;
+
+ count += sun4i_drv_add_endpoints(&pdev->dev, &match,
+ pipeline);
+
+ DRM_DEBUG_DRIVER("Queued %d outputs on pipeline %d\n",
+ count, i);
+ }
+
+ if (count)
+ return component_master_add_with_match(&pdev->dev,
+ &sun4i_drv_master_ops,
+ match);
+ else
+ return 0;
+}
+
+static int sun4i_drv_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static const struct of_device_id sun4i_drv_of_table[] = {
+ { .compatible = "allwinner,sun5i-a13-display-engine" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sun4i_drv_of_table);
+
+static struct platform_driver sun4i_drv_platform_driver = {
+ .probe = sun4i_drv_probe,
+ .remove = sun4i_drv_remove,
+ .driver = {
+ .name = "sun4i-drm",
+ .of_match_table = sun4i_drv_of_table,
+ },
+};
+module_platform_driver(sun4i_drv_platform_driver);
+
+MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Display Engine DRM/KMS Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_DRV_H_
+#define _SUN4I_DRV_H_
+
+#include <linux/clk.h>
+#include <linux/regmap.h>
+
+struct sun4i_drv {
+ struct sun4i_backend *backend;
+ struct sun4i_crtc *crtc;
+ struct sun4i_tcon *tcon;
+
+ struct drm_plane *primary;
+ struct drm_fbdev_cma *fbdev;
+
+ struct sun4i_layer **layers;
+};
+
+#endif /* _SUN4I_DRV_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drmP.h>
+
+#include "sun4i_drv.h"
+
+static void sun4i_de_output_poll_changed(struct drm_device *drm)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+
+ if (drv->fbdev)
+ drm_fbdev_cma_hotplug_event(drv->fbdev);
+}
+
+static const struct drm_mode_config_funcs sun4i_de_mode_config_funcs = {
+ .output_poll_changed = sun4i_de_output_poll_changed,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+ .fb_create = drm_fb_cma_create,
+};
+
+struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm)
+{
+ drm_mode_config_reset(drm);
+
+ drm->mode_config.max_width = 8192;
+ drm->mode_config.max_height = 8192;
+
+ drm->mode_config.funcs = &sun4i_de_mode_config_funcs;
+
+ return drm_fbdev_cma_init(drm, 32,
+ drm->mode_config.num_crtc,
+ drm->mode_config.num_connector);
+}
+
+void sun4i_framebuffer_free(struct drm_device *drm)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+
+ drm_fbdev_cma_fini(drv->fbdev);
+ drm_mode_config_cleanup(drm);
+}
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_FRAMEBUFFER_H_
+#define _SUN4I_FRAMEBUFFER_H_
+
+struct drm_fbdev_cma *sun4i_framebuffer_init(struct drm_device *drm);
+void sun4i_framebuffer_free(struct drm_device *drm);
+
+#endif /* _SUN4I_FRAMEBUFFER_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drmP.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+#include "sun4i_layer.h"
+
+#define SUN4I_NUM_LAYERS 2
+
+static int sun4i_backend_layer_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *state)
+{
+ return 0;
+}
+
+static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+ struct sun4i_drv *drv = layer->drv;
+ struct sun4i_backend *backend = drv->backend;
+
+ sun4i_backend_layer_enable(backend, layer->id, false);
+}
+
+static void sun4i_backend_layer_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
+ struct sun4i_drv *drv = layer->drv;
+ struct sun4i_backend *backend = drv->backend;
+
+ sun4i_backend_update_layer_coord(backend, layer->id, plane);
+ sun4i_backend_update_layer_formats(backend, layer->id, plane);
+ sun4i_backend_update_layer_buffer(backend, layer->id, plane);
+ sun4i_backend_layer_enable(backend, layer->id, true);
+}
+
+static struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = {
+ .atomic_check = sun4i_backend_layer_atomic_check,
+ .atomic_disable = sun4i_backend_layer_atomic_disable,
+ .atomic_update = sun4i_backend_layer_atomic_update,
+};
+
+static const struct drm_plane_funcs sun4i_backend_layer_funcs = {
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .destroy = drm_plane_cleanup,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .reset = drm_atomic_helper_plane_reset,
+ .update_plane = drm_atomic_helper_update_plane,
+};
+
+static const uint32_t sun4i_backend_layer_formats[] = {
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB888,
+};
+
+static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
+ enum drm_plane_type type)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_layer *layer;
+ int ret;
+
+ layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
+ if (!layer)
+ return ERR_PTR(-ENOMEM);
+
+ ret = drm_universal_plane_init(drm, &layer->plane, BIT(0),
+ &sun4i_backend_layer_funcs,
+ sun4i_backend_layer_formats,
+ ARRAY_SIZE(sun4i_backend_layer_formats),
+ type,
+ NULL);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't initialize layer\n");
+ return ERR_PTR(ret);
+ }
+
+ drm_plane_helper_add(&layer->plane,
+ &sun4i_backend_layer_helper_funcs);
+ layer->drv = drv;
+
+ if (type == DRM_PLANE_TYPE_PRIMARY)
+ drv->primary = &layer->plane;
+
+ return layer;
+}
+
+struct sun4i_layer **sun4i_layers_init(struct drm_device *drm)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_layer **layers;
+ int i;
+
+ layers = devm_kcalloc(drm->dev, SUN4I_NUM_LAYERS, sizeof(**layers),
+ GFP_KERNEL);
+ if (!layers)
+ return ERR_PTR(-ENOMEM);
+
+ /*
+ * The hardware is a bit unusual here.
+ *
+ * Even though it supports 4 layers, it does the composition
+ * in two separate steps.
+ *
+ * The first one is assigning a layer to one of its two
+ * pipes. If more that 1 layer is assigned to the same pipe,
+ * and if pixels overlaps, the pipe will take the pixel from
+ * the layer with the highest priority.
+ *
+ * The second step is the actual alpha blending, that takes
+ * the two pipes as input, and uses the eventual alpha
+ * component to do the transparency between the two.
+ *
+ * This two steps scenario makes us unable to guarantee a
+ * robust alpha blending between the 4 layers in all
+ * situations. So we just expose two layers, one per pipe. On
+ * SoCs that support it, sprites could fill the need for more
+ * layers.
+ */
+ for (i = 0; i < SUN4I_NUM_LAYERS; i++) {
+ enum drm_plane_type type = (i == 0)
+ ? DRM_PLANE_TYPE_PRIMARY
+ : DRM_PLANE_TYPE_OVERLAY;
+ struct sun4i_layer *layer = layers[i];
+
+ layer = sun4i_layer_init_one(drm, type);
+ if (IS_ERR(layer)) {
+ dev_err(drm->dev, "Couldn't initialize %s plane\n",
+ i ? "overlay" : "primary");
+ return ERR_CAST(layer);
+ };
+
+ DRM_DEBUG_DRIVER("Assigning %s plane to pipe %d\n",
+ i ? "overlay" : "primary", i);
+ regmap_update_bits(drv->backend->regs, SUN4I_BACKEND_ATTCTL_REG0(i),
+ SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL_MASK,
+ SUN4I_BACKEND_ATTCTL_REG0_LAY_PIPESEL(i));
+
+ layer->id = i;
+ };
+
+ return layers;
+}
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_LAYER_H_
+#define _SUN4I_LAYER_H_
+
+struct sun4i_layer {
+ struct drm_plane plane;
+ struct sun4i_drv *drv;
+ int id;
+};
+
+static inline struct sun4i_layer *
+plane_to_sun4i_layer(struct drm_plane *plane)
+{
+ return container_of(plane, struct sun4i_layer, plane);
+}
+
+struct sun4i_layer **sun4i_layers_init(struct drm_device *drm);
+
+#endif /* _SUN4I_LAYER_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+struct sun4i_rgb {
+ struct drm_connector connector;
+ struct drm_encoder encoder;
+
+ struct sun4i_drv *drv;
+};
+
+static inline struct sun4i_rgb *
+drm_connector_to_sun4i_rgb(struct drm_connector *connector)
+{
+ return container_of(connector, struct sun4i_rgb,
+ connector);
+}
+
+static inline struct sun4i_rgb *
+drm_encoder_to_sun4i_rgb(struct drm_encoder *encoder)
+{
+ return container_of(encoder, struct sun4i_rgb,
+ encoder);
+}
+
+static int sun4i_rgb_get_modes(struct drm_connector *connector)
+{
+ struct sun4i_rgb *rgb =
+ drm_connector_to_sun4i_rgb(connector);
+ struct sun4i_drv *drv = rgb->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ return drm_panel_get_modes(tcon->panel);
+}
+
+static int sun4i_rgb_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ u32 hsync = mode->hsync_end - mode->hsync_start;
+ u32 vsync = mode->vsync_end - mode->vsync_start;
+
+ DRM_DEBUG_DRIVER("Validating modes...\n");
+
+ if (hsync < 1)
+ return MODE_HSYNC_NARROW;
+
+ if (hsync > 0x3ff)
+ return MODE_HSYNC_WIDE;
+
+ if ((mode->hdisplay < 1) || (mode->htotal < 1))
+ return MODE_H_ILLEGAL;
+
+ if ((mode->hdisplay > 0x7ff) || (mode->htotal > 0xfff))
+ return MODE_BAD_HVALUE;
+
+ DRM_DEBUG_DRIVER("Horizontal parameters OK\n");
+
+ if (vsync < 1)
+ return MODE_VSYNC_NARROW;
+
+ if (vsync > 0x3ff)
+ return MODE_VSYNC_WIDE;
+
+ if ((mode->vdisplay < 1) || (mode->vtotal < 1))
+ return MODE_V_ILLEGAL;
+
+ if ((mode->vdisplay > 0x7ff) || (mode->vtotal > 0xfff))
+ return MODE_BAD_VVALUE;
+
+ DRM_DEBUG_DRIVER("Vertical parameters OK\n");
+
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+sun4i_rgb_best_encoder(struct drm_connector *connector)
+{
+ struct sun4i_rgb *rgb =
+ drm_connector_to_sun4i_rgb(connector);
+
+ return &rgb->encoder;
+}
+
+static struct drm_connector_helper_funcs sun4i_rgb_con_helper_funcs = {
+ .get_modes = sun4i_rgb_get_modes,
+ .mode_valid = sun4i_rgb_mode_valid,
+ .best_encoder = sun4i_rgb_best_encoder,
+};
+
+static enum drm_connector_status
+sun4i_rgb_connector_detect(struct drm_connector *connector, bool force)
+{
+ return connector_status_connected;
+}
+
+static void
+sun4i_rgb_connector_destroy(struct drm_connector *connector)
+{
+ struct sun4i_rgb *rgb = drm_connector_to_sun4i_rgb(connector);
+ struct sun4i_drv *drv = rgb->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ drm_panel_detach(tcon->panel);
+ drm_connector_cleanup(connector);
+}
+
+static struct drm_connector_funcs sun4i_rgb_con_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .detect = sun4i_rgb_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = sun4i_rgb_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int sun4i_rgb_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ return 0;
+}
+
+static void sun4i_rgb_encoder_enable(struct drm_encoder *encoder)
+{
+ struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+ struct sun4i_drv *drv = rgb->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Enabling RGB output\n");
+
+ drm_panel_enable(tcon->panel);
+ sun4i_tcon_channel_enable(tcon, 0);
+}
+
+static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)
+{
+ struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+ struct sun4i_drv *drv = rgb->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Disabling RGB output\n");
+
+ sun4i_tcon_channel_disable(tcon, 0);
+ drm_panel_disable(tcon->panel);
+}
+
+static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct sun4i_rgb *rgb = drm_encoder_to_sun4i_rgb(encoder);
+ struct sun4i_drv *drv = rgb->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ sun4i_tcon0_mode_set(tcon, mode);
+
+ clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
+
+ /* FIXME: This seems to be board specific */
+ clk_set_phase(tcon->dclk, 120);
+}
+
+static struct drm_encoder_helper_funcs sun4i_rgb_enc_helper_funcs = {
+ .atomic_check = sun4i_rgb_atomic_check,
+ .mode_set = sun4i_rgb_encoder_mode_set,
+ .disable = sun4i_rgb_encoder_disable,
+ .enable = sun4i_rgb_encoder_enable,
+};
+
+static void sun4i_rgb_enc_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static struct drm_encoder_funcs sun4i_rgb_enc_funcs = {
+ .destroy = sun4i_rgb_enc_destroy,
+};
+
+int sun4i_rgb_init(struct drm_device *drm)
+{
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_tcon *tcon = drv->tcon;
+ struct sun4i_rgb *rgb;
+ int ret;
+
+ /* If we don't have a panel, there's no point in going on */
+ if (!tcon->panel)
+ return -ENODEV;
+
+ rgb = devm_kzalloc(drm->dev, sizeof(*rgb), GFP_KERNEL);
+ if (!rgb)
+ return -ENOMEM;
+ rgb->drv = drv;
+
+ drm_encoder_helper_add(&rgb->encoder,
+ &sun4i_rgb_enc_helper_funcs);
+ ret = drm_encoder_init(drm,
+ &rgb->encoder,
+ &sun4i_rgb_enc_funcs,
+ DRM_MODE_ENCODER_NONE,
+ NULL);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't initialise the rgb encoder\n");
+ goto err_out;
+ }
+
+ /* The RGB encoder can only work with the TCON channel 0 */
+ rgb->encoder.possible_crtcs = BIT(0);
+
+ drm_connector_helper_add(&rgb->connector,
+ &sun4i_rgb_con_helper_funcs);
+ ret = drm_connector_init(drm, &rgb->connector,
+ &sun4i_rgb_con_funcs,
+ DRM_MODE_CONNECTOR_Unknown);
+ if (ret) {
+ dev_err(drm->dev, "Couldn't initialise the rgb connector\n");
+ goto err_cleanup_connector;
+ }
+
+ drm_mode_connector_attach_encoder(&rgb->connector, &rgb->encoder);
+
+ drm_panel_attach(tcon->panel, &rgb->connector);
+
+ return 0;
+
+err_cleanup_connector:
+ drm_encoder_cleanup(&rgb->encoder);
+err_out:
+ return ret;
+}
+EXPORT_SYMBOL(sun4i_rgb_init);
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef _SUN4I_RGB_H_
+#define _SUN4I_RGB_H_
+
+int sun4i_rgb_init(struct drm_device *drm);
+
+#endif /* _SUN4I_RGB_H_ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <linux/component.h>
+#include <linux/ioport.h>
+#include <linux/of_address.h>
+#include <linux/of_graph.h>
+#include <linux/of_irq.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include "sun4i_crtc.h"
+#include "sun4i_dotclock.h"
+#include "sun4i_drv.h"
+#include "sun4i_rgb.h"
+#include "sun4i_tcon.h"
+
+void sun4i_tcon_disable(struct sun4i_tcon *tcon)
+{
+ DRM_DEBUG_DRIVER("Disabling TCON\n");
+
+ /* Disable the TCON */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+ SUN4I_TCON_GCTL_TCON_ENABLE, 0);
+}
+EXPORT_SYMBOL(sun4i_tcon_disable);
+
+void sun4i_tcon_enable(struct sun4i_tcon *tcon)
+{
+ DRM_DEBUG_DRIVER("Enabling TCON\n");
+
+ /* Enable the TCON */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+ SUN4I_TCON_GCTL_TCON_ENABLE,
+ SUN4I_TCON_GCTL_TCON_ENABLE);
+}
+EXPORT_SYMBOL(sun4i_tcon_enable);
+
+void sun4i_tcon_channel_disable(struct sun4i_tcon *tcon, int channel)
+{
+ /* Disable the TCON's channel */
+ if (channel == 0) {
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+ SUN4I_TCON0_CTL_TCON_ENABLE, 0);
+ clk_disable_unprepare(tcon->dclk);
+ } else if (channel == 1) {
+ regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+ SUN4I_TCON1_CTL_TCON_ENABLE, 0);
+ clk_disable_unprepare(tcon->sclk1);
+ }
+}
+EXPORT_SYMBOL(sun4i_tcon_channel_disable);
+
+void sun4i_tcon_channel_enable(struct sun4i_tcon *tcon, int channel)
+{
+ /* Enable the TCON's channel */
+ if (channel == 0) {
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+ SUN4I_TCON0_CTL_TCON_ENABLE,
+ SUN4I_TCON0_CTL_TCON_ENABLE);
+ clk_prepare_enable(tcon->dclk);
+ } else if (channel == 1) {
+ regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+ SUN4I_TCON1_CTL_TCON_ENABLE,
+ SUN4I_TCON1_CTL_TCON_ENABLE);
+ clk_prepare_enable(tcon->sclk1);
+ }
+}
+EXPORT_SYMBOL(sun4i_tcon_channel_enable);
+
+void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable)
+{
+ u32 mask, val = 0;
+
+ DRM_DEBUG_DRIVER("%sabling VBLANK interrupt\n", enable ? "En" : "Dis");
+
+ mask = SUN4I_TCON_GINT0_VBLANK_ENABLE(0) |
+ SUN4I_TCON_GINT0_VBLANK_ENABLE(1);
+
+ if (enable)
+ val = mask;
+
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG, mask, val);
+}
+EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
+
+static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
+ int channel)
+{
+ int delay = mode->vtotal - mode->vdisplay;
+
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+ delay /= 2;
+
+ if (channel == 1)
+ delay -= 2;
+
+ delay = min(delay, 30);
+
+ DRM_DEBUG_DRIVER("TCON %d clock delay %u\n", channel, delay);
+
+ return delay;
+}
+
+void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
+ struct drm_display_mode *mode)
+{
+ unsigned int bp, hsync, vsync;
+ u8 clk_delay;
+ u32 val = 0;
+
+ /* Adjust clock delay */
+ clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
+ SUN4I_TCON0_CTL_CLK_DELAY_MASK,
+ SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
+
+ /* Set the resolution */
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC0_REG,
+ SUN4I_TCON0_BASIC0_X(mode->crtc_hdisplay) |
+ SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
+
+ /*
+ * This is called a backporch in the register documentation,
+ * but it really is the front porch + hsync
+ */
+ bp = mode->crtc_htotal - mode->crtc_hsync_start;
+ DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
+ mode->crtc_htotal, bp);
+
+ /* Set horizontal display timings */
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC1_REG,
+ SUN4I_TCON0_BASIC1_H_TOTAL(mode->crtc_htotal) |
+ SUN4I_TCON0_BASIC1_H_BACKPORCH(bp));
+
+ /*
+ * This is called a backporch in the register documentation,
+ * but it really is the front porch + hsync
+ */
+ bp = mode->crtc_vtotal - mode->crtc_vsync_start;
+ DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
+ mode->crtc_vtotal, bp);
+
+ /* Set vertical display timings */
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC2_REG,
+ SUN4I_TCON0_BASIC2_V_TOTAL(mode->crtc_vtotal) |
+ SUN4I_TCON0_BASIC2_V_BACKPORCH(bp));
+
+ /* Set Hsync and Vsync length */
+ hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
+ vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
+ DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
+ regmap_write(tcon->regs, SUN4I_TCON0_BASIC3_REG,
+ SUN4I_TCON0_BASIC3_V_SYNC(vsync) |
+ SUN4I_TCON0_BASIC3_H_SYNC(hsync));
+
+ /* Setup the polarity of the various signals */
+ if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
+ val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
+
+ if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
+ val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
+
+ regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
+ SUN4I_TCON0_IO_POL_HSYNC_POSITIVE | SUN4I_TCON0_IO_POL_VSYNC_POSITIVE,
+ val);
+
+ /* Map output pins to channel 0 */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+ SUN4I_TCON_GCTL_IOMAP_MASK,
+ SUN4I_TCON_GCTL_IOMAP_TCON0);
+
+ /* Enable the output on the pins */
+ regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, 0);
+}
+EXPORT_SYMBOL(sun4i_tcon0_mode_set);
+
+void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
+ struct drm_display_mode *mode)
+{
+ unsigned int bp, hsync, vsync;
+ u8 clk_delay;
+ u32 val;
+
+ /* Adjust clock delay */
+ clk_delay = sun4i_tcon_get_clk_delay(mode, 1);
+ regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+ SUN4I_TCON1_CTL_CLK_DELAY_MASK,
+ SUN4I_TCON1_CTL_CLK_DELAY(clk_delay));
+
+ /* Set interlaced mode */
+ if (mode->flags & DRM_MODE_FLAG_INTERLACE)
+ val = SUN4I_TCON1_CTL_INTERLACE_ENABLE;
+ else
+ val = 0;
+ regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
+ SUN4I_TCON1_CTL_INTERLACE_ENABLE,
+ val);
+
+ /* Set the input resolution */
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC0_REG,
+ SUN4I_TCON1_BASIC0_X(mode->crtc_hdisplay) |
+ SUN4I_TCON1_BASIC0_Y(mode->crtc_vdisplay));
+
+ /* Set the upscaling resolution */
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC1_REG,
+ SUN4I_TCON1_BASIC1_X(mode->crtc_hdisplay) |
+ SUN4I_TCON1_BASIC1_Y(mode->crtc_vdisplay));
+
+ /* Set the output resolution */
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC2_REG,
+ SUN4I_TCON1_BASIC2_X(mode->crtc_hdisplay) |
+ SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay));
+
+ /* Set horizontal display timings */
+ bp = mode->crtc_htotal - mode->crtc_hsync_end;
+ DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
+ mode->htotal, bp);
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG,
+ SUN4I_TCON1_BASIC3_H_TOTAL(mode->crtc_htotal) |
+ SUN4I_TCON1_BASIC3_H_BACKPORCH(bp));
+
+ /* Set vertical display timings */
+ bp = mode->crtc_vtotal - mode->crtc_vsync_end;
+ DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
+ mode->vtotal, bp);
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG,
+ SUN4I_TCON1_BASIC4_V_TOTAL(mode->vtotal) |
+ SUN4I_TCON1_BASIC4_V_BACKPORCH(bp));
+
+ /* Set Hsync and Vsync length */
+ hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
+ vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
+ DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
+ regmap_write(tcon->regs, SUN4I_TCON1_BASIC5_REG,
+ SUN4I_TCON1_BASIC5_V_SYNC(vsync) |
+ SUN4I_TCON1_BASIC5_H_SYNC(hsync));
+
+ /* Map output pins to channel 1 */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
+ SUN4I_TCON_GCTL_IOMAP_MASK,
+ SUN4I_TCON_GCTL_IOMAP_TCON1);
+
+ /*
+ * FIXME: Undocumented bits
+ */
+ if (tcon->has_mux)
+ regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
+}
+EXPORT_SYMBOL(sun4i_tcon1_mode_set);
+
+static void sun4i_tcon_finish_page_flip(struct drm_device *dev,
+ struct sun4i_crtc *scrtc)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (scrtc->event) {
+ drm_crtc_send_vblank_event(&scrtc->crtc, scrtc->event);
+ drm_crtc_vblank_put(&scrtc->crtc);
+ scrtc->event = NULL;
+ }
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+static irqreturn_t sun4i_tcon_handler(int irq, void *private)
+{
+ struct sun4i_tcon *tcon = private;
+ struct drm_device *drm = tcon->drm;
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_crtc *scrtc = drv->crtc;
+ unsigned int status;
+
+ regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
+
+ if (!(status & (SUN4I_TCON_GINT0_VBLANK_INT(0) |
+ SUN4I_TCON_GINT0_VBLANK_INT(1))))
+ return IRQ_NONE;
+
+ drm_crtc_handle_vblank(&scrtc->crtc);
+ sun4i_tcon_finish_page_flip(drm, scrtc);
+
+ /* Acknowledge the interrupt */
+ regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG,
+ SUN4I_TCON_GINT0_VBLANK_INT(0) |
+ SUN4I_TCON_GINT0_VBLANK_INT(1),
+ 0);
+
+ return IRQ_HANDLED;
+}
+
+static int sun4i_tcon_init_clocks(struct device *dev,
+ struct sun4i_tcon *tcon)
+{
+ tcon->clk = devm_clk_get(dev, "ahb");
+ if (IS_ERR(tcon->clk)) {
+ dev_err(dev, "Couldn't get the TCON bus clock\n");
+ return PTR_ERR(tcon->clk);
+ }
+ clk_prepare_enable(tcon->clk);
+
+ tcon->sclk0 = devm_clk_get(dev, "tcon-ch0");
+ if (IS_ERR(tcon->sclk0)) {
+ dev_err(dev, "Couldn't get the TCON channel 0 clock\n");
+ return PTR_ERR(tcon->sclk0);
+ }
+
+ tcon->sclk1 = devm_clk_get(dev, "tcon-ch1");
+ if (IS_ERR(tcon->sclk1)) {
+ dev_err(dev, "Couldn't get the TCON channel 1 clock\n");
+ return PTR_ERR(tcon->sclk1);
+ }
+
+ return sun4i_dclk_create(dev, tcon);
+}
+
+static void sun4i_tcon_free_clocks(struct sun4i_tcon *tcon)
+{
+ sun4i_dclk_free(tcon);
+ clk_disable_unprepare(tcon->clk);
+}
+
+static int sun4i_tcon_init_irq(struct device *dev,
+ struct sun4i_tcon *tcon)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ int irq, ret;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "Couldn't retrieve the TCON interrupt\n");
+ return irq;
+ }
+
+ ret = devm_request_irq(dev, irq, sun4i_tcon_handler, 0,
+ dev_name(dev), tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't request the IRQ\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct regmap_config sun4i_tcon_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = 0x800,
+};
+
+static int sun4i_tcon_init_regmap(struct device *dev,
+ struct sun4i_tcon *tcon)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct resource *res;
+ void __iomem *regs;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs)) {
+ dev_err(dev, "Couldn't map the TCON registers\n");
+ return PTR_ERR(regs);
+ }
+
+ tcon->regs = devm_regmap_init_mmio(dev, regs,
+ &sun4i_tcon_regmap_config);
+ if (IS_ERR(tcon->regs)) {
+ dev_err(dev, "Couldn't create the TCON regmap\n");
+ return PTR_ERR(tcon->regs);
+ }
+
+ /* Make sure the TCON is disabled and all IRQs are off */
+ regmap_write(tcon->regs, SUN4I_TCON_GCTL_REG, 0);
+ regmap_write(tcon->regs, SUN4I_TCON_GINT0_REG, 0);
+ regmap_write(tcon->regs, SUN4I_TCON_GINT1_REG, 0);
+
+ /* Disable IO lines and set them to tristate */
+ regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, ~0);
+ regmap_write(tcon->regs, SUN4I_TCON1_IO_TRI_REG, ~0);
+
+ return 0;
+}
+
+static struct drm_panel *sun4i_tcon_find_panel(struct device_node *node)
+{
+ struct device_node *port, *remote, *child;
+ struct device_node *end_node = NULL;
+
+ /* Inputs are listed first, then outputs */
+ port = of_graph_get_port_by_id(node, 1);
+
+ /*
+ * Our first output is the RGB interface where the panel will
+ * be connected.
+ */
+ for_each_child_of_node(port, child) {
+ u32 reg;
+
+ of_property_read_u32(child, "reg", ®);
+ if (reg == 0)
+ end_node = child;
+ }
+
+ if (!end_node) {
+ DRM_DEBUG_DRIVER("Missing panel endpoint\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ remote = of_graph_get_remote_port_parent(end_node);
+ if (!remote) {
+ DRM_DEBUG_DRIVER("Enable to parse remote node\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ return of_drm_find_panel(remote);
+}
+
+static int sun4i_tcon_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct drm_device *drm = data;
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_tcon *tcon;
+ int ret;
+
+ tcon = devm_kzalloc(dev, sizeof(*tcon), GFP_KERNEL);
+ if (!tcon)
+ return -ENOMEM;
+ dev_set_drvdata(dev, tcon);
+ drv->tcon = tcon;
+ tcon->drm = drm;
+
+ if (of_device_is_compatible(dev->of_node, "allwinner,sun5i-a13-tcon"))
+ tcon->has_mux = true;
+
+ tcon->lcd_rst = devm_reset_control_get(dev, "lcd");
+ if (IS_ERR(tcon->lcd_rst)) {
+ dev_err(dev, "Couldn't get our reset line\n");
+ return PTR_ERR(tcon->lcd_rst);
+ }
+
+ /* Make sure our TCON is reset */
+ if (!reset_control_status(tcon->lcd_rst))
+ reset_control_assert(tcon->lcd_rst);
+
+ ret = reset_control_deassert(tcon->lcd_rst);
+ if (ret) {
+ dev_err(dev, "Couldn't deassert our reset line\n");
+ return ret;
+ }
+
+ ret = sun4i_tcon_init_regmap(dev, tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't init our TCON regmap\n");
+ goto err_assert_reset;
+ }
+
+ ret = sun4i_tcon_init_clocks(dev, tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't init our TCON clocks\n");
+ goto err_assert_reset;
+ }
+
+ ret = sun4i_tcon_init_irq(dev, tcon);
+ if (ret) {
+ dev_err(dev, "Couldn't init our TCON interrupts\n");
+ goto err_free_clocks;
+ }
+
+ tcon->panel = sun4i_tcon_find_panel(dev->of_node);
+ if (IS_ERR(tcon->panel)) {
+ dev_info(dev, "No panel found... RGB output disabled\n");
+ return 0;
+ }
+
+ return sun4i_rgb_init(drm);
+
+err_free_clocks:
+ sun4i_tcon_free_clocks(tcon);
+err_assert_reset:
+ reset_control_assert(tcon->lcd_rst);
+ return ret;
+}
+
+static void sun4i_tcon_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct sun4i_tcon *tcon = dev_get_drvdata(dev);
+
+ sun4i_tcon_free_clocks(tcon);
+}
+
+static struct component_ops sun4i_tcon_ops = {
+ .bind = sun4i_tcon_bind,
+ .unbind = sun4i_tcon_unbind,
+};
+
+static int sun4i_tcon_probe(struct platform_device *pdev)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct drm_panel *panel;
+
+ /*
+ * The panel is not ready.
+ * Defer the probe.
+ */
+ panel = sun4i_tcon_find_panel(node);
+ if (IS_ERR(panel)) {
+ /*
+ * If we don't have a panel endpoint, just go on
+ */
+ if (PTR_ERR(panel) != -ENODEV)
+ return -EPROBE_DEFER;
+ }
+
+ return component_add(&pdev->dev, &sun4i_tcon_ops);
+}
+
+static int sun4i_tcon_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &sun4i_tcon_ops);
+
+ return 0;
+}
+
+static const struct of_device_id sun4i_tcon_of_table[] = {
+ { .compatible = "allwinner,sun5i-a13-tcon" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);
+
+static struct platform_driver sun4i_tcon_platform_driver = {
+ .probe = sun4i_tcon_probe,
+ .remove = sun4i_tcon_remove,
+ .driver = {
+ .name = "sun4i-tcon",
+ .of_match_table = sun4i_tcon_of_table,
+ },
+};
+module_platform_driver(sun4i_tcon_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 Timing Controller Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Boris Brezillon <boris.brezillon@free-electrons.com>
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#ifndef __SUN4I_TCON_H__
+#define __SUN4I_TCON_H__
+
+#include <drm/drm_crtc.h>
+
+#include <linux/kernel.h>
+#include <linux/reset.h>
+
+#define SUN4I_TCON_GCTL_REG 0x0
+#define SUN4I_TCON_GCTL_TCON_ENABLE BIT(31)
+#define SUN4I_TCON_GCTL_IOMAP_MASK BIT(0)
+#define SUN4I_TCON_GCTL_IOMAP_TCON1 (1 << 0)
+#define SUN4I_TCON_GCTL_IOMAP_TCON0 (0 << 0)
+
+#define SUN4I_TCON_GINT0_REG 0x4
+#define SUN4I_TCON_GINT0_VBLANK_ENABLE(pipe) BIT(31 - (pipe))
+#define SUN4I_TCON_GINT0_VBLANK_INT(pipe) BIT(15 - (pipe))
+
+#define SUN4I_TCON_GINT1_REG 0x8
+#define SUN4I_TCON_FRM_CTL_REG 0x10
+
+#define SUN4I_TCON0_CTL_REG 0x40
+#define SUN4I_TCON0_CTL_TCON_ENABLE BIT(31)
+#define SUN4I_TCON0_CTL_CLK_DELAY_MASK GENMASK(8, 4)
+#define SUN4I_TCON0_CTL_CLK_DELAY(delay) ((delay << 4) & SUN4I_TCON0_CTL_CLK_DELAY_MASK)
+
+#define SUN4I_TCON0_DCLK_REG 0x44
+#define SUN4I_TCON0_DCLK_GATE_BIT (31)
+#define SUN4I_TCON0_DCLK_DIV_SHIFT (0)
+#define SUN4I_TCON0_DCLK_DIV_WIDTH (7)
+
+#define SUN4I_TCON0_BASIC0_REG 0x48
+#define SUN4I_TCON0_BASIC0_X(width) ((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON0_BASIC0_Y(height) (((height) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC1_REG 0x4c
+#define SUN4I_TCON0_BASIC1_H_TOTAL(total) ((((total) - 1) & 0x1fff) << 16)
+#define SUN4I_TCON0_BASIC1_H_BACKPORCH(bp) (((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC2_REG 0x50
+#define SUN4I_TCON0_BASIC2_V_TOTAL(total) ((((total) * 2) & 0x1fff) << 16)
+#define SUN4I_TCON0_BASIC2_V_BACKPORCH(bp) (((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON0_BASIC3_REG 0x54
+#define SUN4I_TCON0_BASIC3_H_SYNC(width) ((((width) - 1) & 0x7ff) << 16)
+#define SUN4I_TCON0_BASIC3_V_SYNC(height) (((height) - 1) & 0x7ff)
+
+#define SUN4I_TCON0_HV_IF_REG 0x58
+#define SUN4I_TCON0_CPU_IF_REG 0x60
+#define SUN4I_TCON0_CPU_WR_REG 0x64
+#define SUN4I_TCON0_CPU_RD0_REG 0x68
+#define SUN4I_TCON0_CPU_RDA_REG 0x6c
+#define SUN4I_TCON0_TTL0_REG 0x70
+#define SUN4I_TCON0_TTL1_REG 0x74
+#define SUN4I_TCON0_TTL2_REG 0x78
+#define SUN4I_TCON0_TTL3_REG 0x7c
+#define SUN4I_TCON0_TTL4_REG 0x80
+#define SUN4I_TCON0_LVDS_IF_REG 0x84
+#define SUN4I_TCON0_IO_POL_REG 0x88
+#define SUN4I_TCON0_IO_POL_DCLK_PHASE(phase) ((phase & 3) << 28)
+#define SUN4I_TCON0_IO_POL_HSYNC_POSITIVE BIT(25)
+#define SUN4I_TCON0_IO_POL_VSYNC_POSITIVE BIT(24)
+
+#define SUN4I_TCON0_IO_TRI_REG 0x8c
+#define SUN4I_TCON0_IO_TRI_HSYNC_DISABLE BIT(25)
+#define SUN4I_TCON0_IO_TRI_VSYNC_DISABLE BIT(24)
+#define SUN4I_TCON0_IO_TRI_DATA_PINS_DISABLE(pins) GENMASK(pins, 0)
+
+#define SUN4I_TCON1_CTL_REG 0x90
+#define SUN4I_TCON1_CTL_TCON_ENABLE BIT(31)
+#define SUN4I_TCON1_CTL_INTERLACE_ENABLE BIT(20)
+#define SUN4I_TCON1_CTL_CLK_DELAY_MASK GENMASK(8, 4)
+#define SUN4I_TCON1_CTL_CLK_DELAY(delay) ((delay << 4) & SUN4I_TCON1_CTL_CLK_DELAY_MASK)
+
+#define SUN4I_TCON1_BASIC0_REG 0x94
+#define SUN4I_TCON1_BASIC0_X(width) ((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC0_Y(height) (((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC1_REG 0x98
+#define SUN4I_TCON1_BASIC1_X(width) ((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC1_Y(height) (((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC2_REG 0x9c
+#define SUN4I_TCON1_BASIC2_X(width) ((((width) - 1) & 0xfff) << 16)
+#define SUN4I_TCON1_BASIC2_Y(height) (((height) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC3_REG 0xa0
+#define SUN4I_TCON1_BASIC3_H_TOTAL(total) ((((total) - 1) & 0x1fff) << 16)
+#define SUN4I_TCON1_BASIC3_H_BACKPORCH(bp) (((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC4_REG 0xa4
+#define SUN4I_TCON1_BASIC4_V_TOTAL(total) (((total) & 0x1fff) << 16)
+#define SUN4I_TCON1_BASIC4_V_BACKPORCH(bp) (((bp) - 1) & 0xfff)
+
+#define SUN4I_TCON1_BASIC5_REG 0xa8
+#define SUN4I_TCON1_BASIC5_H_SYNC(width) ((((width) - 1) & 0x3ff) << 16)
+#define SUN4I_TCON1_BASIC5_V_SYNC(height) (((height) - 1) & 0x3ff)
+
+#define SUN4I_TCON1_IO_POL_REG 0xf0
+#define SUN4I_TCON1_IO_TRI_REG 0xf4
+#define SUN4I_TCON_CEU_CTL_REG 0x100
+#define SUN4I_TCON_CEU_MUL_RR_REG 0x110
+#define SUN4I_TCON_CEU_MUL_RG_REG 0x114
+#define SUN4I_TCON_CEU_MUL_RB_REG 0x118
+#define SUN4I_TCON_CEU_ADD_RC_REG 0x11c
+#define SUN4I_TCON_CEU_MUL_GR_REG 0x120
+#define SUN4I_TCON_CEU_MUL_GG_REG 0x124
+#define SUN4I_TCON_CEU_MUL_GB_REG 0x128
+#define SUN4I_TCON_CEU_ADD_GC_REG 0x12c
+#define SUN4I_TCON_CEU_MUL_BR_REG 0x130
+#define SUN4I_TCON_CEU_MUL_BG_REG 0x134
+#define SUN4I_TCON_CEU_MUL_BB_REG 0x138
+#define SUN4I_TCON_CEU_ADD_BC_REG 0x13c
+#define SUN4I_TCON_CEU_RANGE_R_REG 0x140
+#define SUN4I_TCON_CEU_RANGE_G_REG 0x144
+#define SUN4I_TCON_CEU_RANGE_B_REG 0x148
+#define SUN4I_TCON_MUX_CTRL_REG 0x200
+#define SUN4I_TCON1_FILL_CTL_REG 0x300
+#define SUN4I_TCON1_FILL_BEG0_REG 0x304
+#define SUN4I_TCON1_FILL_END0_REG 0x308
+#define SUN4I_TCON1_FILL_DATA0_REG 0x30c
+#define SUN4I_TCON1_FILL_BEG1_REG 0x310
+#define SUN4I_TCON1_FILL_END1_REG 0x314
+#define SUN4I_TCON1_FILL_DATA1_REG 0x318
+#define SUN4I_TCON1_FILL_BEG2_REG 0x31c
+#define SUN4I_TCON1_FILL_END2_REG 0x320
+#define SUN4I_TCON1_FILL_DATA2_REG 0x324
+#define SUN4I_TCON1_GAMMA_TABLE_REG 0x400
+
+#define SUN4I_TCON_MAX_CHANNELS 2
+
+struct sun4i_tcon {
+ struct drm_device *drm;
+ struct regmap *regs;
+
+ /* Main bus clock */
+ struct clk *clk;
+
+ /* Clocks for the TCON channels */
+ struct clk *sclk0;
+ struct clk *sclk1;
+
+ /* Pixel clock */
+ struct clk *dclk;
+
+ /* Reset control */
+ struct reset_control *lcd_rst;
+
+ /* Platform adjustments */
+ bool has_mux;
+
+ struct drm_panel *panel;
+};
+
+/* Global Control */
+void sun4i_tcon_disable(struct sun4i_tcon *tcon);
+void sun4i_tcon_enable(struct sun4i_tcon *tcon);
+
+/* Channel Control */
+void sun4i_tcon_channel_disable(struct sun4i_tcon *tcon, int channel);
+void sun4i_tcon_channel_enable(struct sun4i_tcon *tcon, int channel);
+
+void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
+
+/* Mode Related Controls */
+void sun4i_tcon_switch_interlace(struct sun4i_tcon *tcon,
+ bool enable);
+void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
+ struct drm_display_mode *mode);
+void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
+ struct drm_display_mode *mode);
+
+#endif /* __SUN4I_TCON_H__ */
--- /dev/null
+/*
+ * Copyright (C) 2015 Free Electrons
+ * Copyright (C) 2015 NextThing Co
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_address.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_panel.h>
+
+#include "sun4i_backend.h"
+#include "sun4i_drv.h"
+#include "sun4i_tcon.h"
+
+#define SUN4I_TVE_EN_REG 0x000
+#define SUN4I_TVE_EN_DAC_MAP_MASK GENMASK(19, 4)
+#define SUN4I_TVE_EN_DAC_MAP(dac, out) (((out) & 0xf) << (dac + 1) * 4)
+#define SUN4I_TVE_EN_ENABLE BIT(0)
+
+#define SUN4I_TVE_CFG0_REG 0x004
+#define SUN4I_TVE_CFG0_DAC_CONTROL_54M BIT(26)
+#define SUN4I_TVE_CFG0_CORE_DATAPATH_54M BIT(25)
+#define SUN4I_TVE_CFG0_CORE_CONTROL_54M BIT(24)
+#define SUN4I_TVE_CFG0_YC_EN BIT(17)
+#define SUN4I_TVE_CFG0_COMP_EN BIT(16)
+#define SUN4I_TVE_CFG0_RES(x) ((x) & 0xf)
+#define SUN4I_TVE_CFG0_RES_480i SUN4I_TVE_CFG0_RES(0)
+#define SUN4I_TVE_CFG0_RES_576i SUN4I_TVE_CFG0_RES(1)
+
+#define SUN4I_TVE_DAC0_REG 0x008
+#define SUN4I_TVE_DAC0_CLOCK_INVERT BIT(24)
+#define SUN4I_TVE_DAC0_LUMA(x) (((x) & 3) << 20)
+#define SUN4I_TVE_DAC0_LUMA_0_4 SUN4I_TVE_DAC0_LUMA(3)
+#define SUN4I_TVE_DAC0_CHROMA(x) (((x) & 3) << 18)
+#define SUN4I_TVE_DAC0_CHROMA_0_75 SUN4I_TVE_DAC0_CHROMA(3)
+#define SUN4I_TVE_DAC0_INTERNAL_DAC(x) (((x) & 3) << 16)
+#define SUN4I_TVE_DAC0_INTERNAL_DAC_37_5_OHMS SUN4I_TVE_DAC0_INTERNAL_DAC(3)
+#define SUN4I_TVE_DAC0_DAC_EN(dac) BIT(dac)
+
+#define SUN4I_TVE_NOTCH_REG 0x00c
+#define SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(dac, x) ((4 - (x)) << (dac * 3))
+
+#define SUN4I_TVE_CHROMA_FREQ_REG 0x010
+
+#define SUN4I_TVE_PORCH_REG 0x014
+#define SUN4I_TVE_PORCH_BACK(x) ((x) << 16)
+#define SUN4I_TVE_PORCH_FRONT(x) (x)
+
+#define SUN4I_TVE_LINE_REG 0x01c
+#define SUN4I_TVE_LINE_FIRST(x) ((x) << 16)
+#define SUN4I_TVE_LINE_NUMBER(x) (x)
+
+#define SUN4I_TVE_LEVEL_REG 0x020
+#define SUN4I_TVE_LEVEL_BLANK(x) ((x) << 16)
+#define SUN4I_TVE_LEVEL_BLACK(x) (x)
+
+#define SUN4I_TVE_DAC1_REG 0x024
+#define SUN4I_TVE_DAC1_AMPLITUDE(dac, x) ((x) << (dac * 8))
+
+#define SUN4I_TVE_DETECT_STA_REG 0x038
+#define SUN4I_TVE_DETECT_STA_DAC(dac) BIT((dac * 8))
+#define SUN4I_TVE_DETECT_STA_UNCONNECTED 0
+#define SUN4I_TVE_DETECT_STA_CONNECTED 1
+#define SUN4I_TVE_DETECT_STA_GROUND 2
+
+#define SUN4I_TVE_CB_CR_LVL_REG 0x10c
+#define SUN4I_TVE_CB_CR_LVL_CR_BURST(x) ((x) << 8)
+#define SUN4I_TVE_CB_CR_LVL_CB_BURST(x) (x)
+
+#define SUN4I_TVE_TINT_BURST_PHASE_REG 0x110
+#define SUN4I_TVE_TINT_BURST_PHASE_CHROMA(x) (x)
+
+#define SUN4I_TVE_BURST_WIDTH_REG 0x114
+#define SUN4I_TVE_BURST_WIDTH_BREEZEWAY(x) ((x) << 16)
+#define SUN4I_TVE_BURST_WIDTH_BURST_WIDTH(x) ((x) << 8)
+#define SUN4I_TVE_BURST_WIDTH_HSYNC_WIDTH(x) (x)
+
+#define SUN4I_TVE_CB_CR_GAIN_REG 0x118
+#define SUN4I_TVE_CB_CR_GAIN_CR(x) ((x) << 8)
+#define SUN4I_TVE_CB_CR_GAIN_CB(x) (x)
+
+#define SUN4I_TVE_SYNC_VBI_REG 0x11c
+#define SUN4I_TVE_SYNC_VBI_SYNC(x) ((x) << 16)
+#define SUN4I_TVE_SYNC_VBI_VBLANK(x) (x)
+
+#define SUN4I_TVE_ACTIVE_LINE_REG 0x124
+#define SUN4I_TVE_ACTIVE_LINE(x) (x)
+
+#define SUN4I_TVE_CHROMA_REG 0x128
+#define SUN4I_TVE_CHROMA_COMP_GAIN(x) ((x) & 3)
+#define SUN4I_TVE_CHROMA_COMP_GAIN_50 SUN4I_TVE_CHROMA_COMP_GAIN(2)
+
+#define SUN4I_TVE_12C_REG 0x12c
+#define SUN4I_TVE_12C_NOTCH_WIDTH_WIDE BIT(8)
+#define SUN4I_TVE_12C_COMP_YUV_EN BIT(0)
+
+#define SUN4I_TVE_RESYNC_REG 0x130
+#define SUN4I_TVE_RESYNC_FIELD BIT(31)
+#define SUN4I_TVE_RESYNC_LINE(x) ((x) << 16)
+#define SUN4I_TVE_RESYNC_PIXEL(x) (x)
+
+#define SUN4I_TVE_SLAVE_REG 0x134
+
+#define SUN4I_TVE_WSS_DATA2_REG 0x244
+
+struct color_gains {
+ u16 cb;
+ u16 cr;
+};
+
+struct burst_levels {
+ u16 cb;
+ u16 cr;
+};
+
+struct video_levels {
+ u16 black;
+ u16 blank;
+};
+
+struct resync_parameters {
+ bool field;
+ u16 line;
+ u16 pixel;
+};
+
+struct tv_mode {
+ char *name;
+
+ u32 mode;
+ u32 chroma_freq;
+ u16 back_porch;
+ u16 front_porch;
+ u16 line_number;
+ u16 vblank_level;
+
+ u32 hdisplay;
+ u16 hfront_porch;
+ u16 hsync_len;
+ u16 hback_porch;
+
+ u32 vdisplay;
+ u16 vfront_porch;
+ u16 vsync_len;
+ u16 vback_porch;
+
+ bool yc_en;
+ bool dac3_en;
+ bool dac_bit25_en;
+
+ struct color_gains *color_gains;
+ struct burst_levels *burst_levels;
+ struct video_levels *video_levels;
+ struct resync_parameters *resync_params;
+};
+
+struct sun4i_tv {
+ struct drm_connector connector;
+ struct drm_encoder encoder;
+
+ struct clk *clk;
+ struct regmap *regs;
+ struct reset_control *reset;
+
+ struct sun4i_drv *drv;
+};
+
+struct video_levels ntsc_video_levels = {
+ .black = 282, .blank = 240,
+};
+
+struct video_levels pal_video_levels = {
+ .black = 252, .blank = 252,
+};
+
+struct burst_levels ntsc_burst_levels = {
+ .cb = 79, .cr = 0,
+};
+
+struct burst_levels pal_burst_levels = {
+ .cb = 40, .cr = 40,
+};
+
+struct color_gains ntsc_color_gains = {
+ .cb = 160, .cr = 160,
+};
+
+struct color_gains pal_color_gains = {
+ .cb = 224, .cr = 224,
+};
+
+struct resync_parameters ntsc_resync_parameters = {
+ .field = false, .line = 14, .pixel = 12,
+};
+
+struct resync_parameters pal_resync_parameters = {
+ .field = true, .line = 13, .pixel = 12,
+};
+
+struct tv_mode tv_modes[] = {
+ {
+ .name = "NTSC",
+ .mode = SUN4I_TVE_CFG0_RES_480i,
+ .chroma_freq = 0x21f07c1f,
+ .yc_en = true,
+ .dac3_en = true,
+ .dac_bit25_en = true,
+
+ .back_porch = 118,
+ .front_porch = 32,
+ .line_number = 525,
+
+ .hdisplay = 720,
+ .hfront_porch = 18,
+ .hsync_len = 2,
+ .hback_porch = 118,
+
+ .vdisplay = 480,
+ .vfront_porch = 26,
+ .vsync_len = 2,
+ .vback_porch = 17,
+
+ .vblank_level = 240,
+
+ .color_gains = &ntsc_color_gains,
+ .burst_levels = &ntsc_burst_levels,
+ .video_levels = &ntsc_video_levels,
+ .resync_params = &ntsc_resync_parameters,
+ },
+ {
+ .name = "PAL",
+ .mode = SUN4I_TVE_CFG0_RES_576i,
+ .chroma_freq = 0x2a098acb,
+
+ .back_porch = 138,
+ .front_porch = 24,
+ .line_number = 625,
+
+ .hdisplay = 720,
+ .hfront_porch = 3,
+ .hsync_len = 2,
+ .hback_porch = 139,
+
+ .vdisplay = 576,
+ .vfront_porch = 28,
+ .vsync_len = 2,
+ .vback_porch = 19,
+
+ .vblank_level = 252,
+
+ .color_gains = &pal_color_gains,
+ .burst_levels = &pal_burst_levels,
+ .video_levels = &pal_video_levels,
+ .resync_params = &pal_resync_parameters,
+ },
+};
+
+static inline struct sun4i_tv *
+drm_encoder_to_sun4i_tv(struct drm_encoder *encoder)
+{
+ return container_of(encoder, struct sun4i_tv,
+ encoder);
+}
+
+static inline struct sun4i_tv *
+drm_connector_to_sun4i_tv(struct drm_connector *connector)
+{
+ return container_of(connector, struct sun4i_tv,
+ connector);
+}
+
+/*
+ * FIXME: If only the drm_display_mode private field was usable, this
+ * could go away...
+ *
+ * So far, it doesn't seem to be preserved when the mode is passed by
+ * to mode_set for some reason.
+ */
+static struct tv_mode *sun4i_tv_find_tv_by_mode(struct drm_display_mode *mode)
+{
+ int i;
+
+ /* First try to identify the mode by name */
+ for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+ struct tv_mode *tv_mode = &tv_modes[i];
+
+ DRM_DEBUG_DRIVER("Comparing mode %s vs %s",
+ mode->name, tv_mode->name);
+
+ if (!strcmp(mode->name, tv_mode->name))
+ return tv_mode;
+ }
+
+ /* Then by number of lines */
+ for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+ struct tv_mode *tv_mode = &tv_modes[i];
+
+ DRM_DEBUG_DRIVER("Comparing mode %s vs %s (X: %d vs %d)",
+ mode->name, tv_mode->name,
+ mode->vdisplay, tv_mode->vdisplay);
+
+ if (mode->vdisplay == tv_mode->vdisplay)
+ return tv_mode;
+ }
+
+ return NULL;
+}
+
+static void sun4i_tv_mode_to_drm_mode(struct tv_mode *tv_mode,
+ struct drm_display_mode *mode)
+{
+ DRM_DEBUG_DRIVER("Creating mode %s\n", mode->name);
+
+ mode->type = DRM_MODE_TYPE_DRIVER;
+ mode->clock = 13500;
+ mode->flags = DRM_MODE_FLAG_INTERLACE;
+
+ mode->hdisplay = tv_mode->hdisplay;
+ mode->hsync_start = mode->hdisplay + tv_mode->hfront_porch;
+ mode->hsync_end = mode->hsync_start + tv_mode->hsync_len;
+ mode->htotal = mode->hsync_end + tv_mode->hback_porch;
+
+ mode->vdisplay = tv_mode->vdisplay;
+ mode->vsync_start = mode->vdisplay + tv_mode->vfront_porch;
+ mode->vsync_end = mode->vsync_start + tv_mode->vsync_len;
+ mode->vtotal = mode->vsync_end + tv_mode->vback_porch;
+}
+
+static int sun4i_tv_atomic_check(struct drm_encoder *encoder,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ return 0;
+}
+
+static void sun4i_tv_disable(struct drm_encoder *encoder)
+{
+ struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+ struct sun4i_drv *drv = tv->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Disabling the TV Output\n");
+
+ sun4i_tcon_channel_disable(tcon, 1);
+
+ regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+ SUN4I_TVE_EN_ENABLE,
+ 0);
+ sun4i_backend_disable_color_correction(drv->backend);
+}
+
+static void sun4i_tv_enable(struct drm_encoder *encoder)
+{
+ struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+ struct sun4i_drv *drv = tv->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+
+ DRM_DEBUG_DRIVER("Enabling the TV Output\n");
+
+ sun4i_backend_apply_color_correction(drv->backend);
+
+ regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+ SUN4I_TVE_EN_ENABLE,
+ SUN4I_TVE_EN_ENABLE);
+
+ sun4i_tcon_channel_enable(tcon, 1);
+}
+
+static void sun4i_tv_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode)
+{
+ struct sun4i_tv *tv = drm_encoder_to_sun4i_tv(encoder);
+ struct sun4i_drv *drv = tv->drv;
+ struct sun4i_tcon *tcon = drv->tcon;
+ struct tv_mode *tv_mode = sun4i_tv_find_tv_by_mode(mode);
+
+ sun4i_tcon1_mode_set(tcon, mode);
+
+ /* Enable and map the DAC to the output */
+ regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
+ SUN4I_TVE_EN_DAC_MAP_MASK,
+ SUN4I_TVE_EN_DAC_MAP(0, 1) |
+ SUN4I_TVE_EN_DAC_MAP(1, 2) |
+ SUN4I_TVE_EN_DAC_MAP(2, 3) |
+ SUN4I_TVE_EN_DAC_MAP(3, 4));
+
+ /* Set PAL settings */
+ regmap_write(tv->regs, SUN4I_TVE_CFG0_REG,
+ tv_mode->mode |
+ (tv_mode->yc_en ? SUN4I_TVE_CFG0_YC_EN : 0) |
+ SUN4I_TVE_CFG0_COMP_EN |
+ SUN4I_TVE_CFG0_DAC_CONTROL_54M |
+ SUN4I_TVE_CFG0_CORE_DATAPATH_54M |
+ SUN4I_TVE_CFG0_CORE_CONTROL_54M);
+
+ /* Configure the DAC for a composite output */
+ regmap_write(tv->regs, SUN4I_TVE_DAC0_REG,
+ SUN4I_TVE_DAC0_DAC_EN(0) |
+ (tv_mode->dac3_en ? SUN4I_TVE_DAC0_DAC_EN(3) : 0) |
+ SUN4I_TVE_DAC0_INTERNAL_DAC_37_5_OHMS |
+ SUN4I_TVE_DAC0_CHROMA_0_75 |
+ SUN4I_TVE_DAC0_LUMA_0_4 |
+ SUN4I_TVE_DAC0_CLOCK_INVERT |
+ (tv_mode->dac_bit25_en ? BIT(25) : 0) |
+ BIT(30));
+
+ /* Configure the sample delay between DAC0 and the other DAC */
+ regmap_write(tv->regs, SUN4I_TVE_NOTCH_REG,
+ SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(1, 0) |
+ SUN4I_TVE_NOTCH_DAC0_TO_DAC_DLY(2, 0));
+
+ regmap_write(tv->regs, SUN4I_TVE_CHROMA_FREQ_REG,
+ tv_mode->chroma_freq);
+
+ /* Set the front and back porch */
+ regmap_write(tv->regs, SUN4I_TVE_PORCH_REG,
+ SUN4I_TVE_PORCH_BACK(tv_mode->back_porch) |
+ SUN4I_TVE_PORCH_FRONT(tv_mode->front_porch));
+
+ /* Set the lines setup */
+ regmap_write(tv->regs, SUN4I_TVE_LINE_REG,
+ SUN4I_TVE_LINE_FIRST(22) |
+ SUN4I_TVE_LINE_NUMBER(tv_mode->line_number));
+
+ regmap_write(tv->regs, SUN4I_TVE_LEVEL_REG,
+ SUN4I_TVE_LEVEL_BLANK(tv_mode->video_levels->blank) |
+ SUN4I_TVE_LEVEL_BLACK(tv_mode->video_levels->black));
+
+ regmap_write(tv->regs, SUN4I_TVE_DAC1_REG,
+ SUN4I_TVE_DAC1_AMPLITUDE(0, 0x18) |
+ SUN4I_TVE_DAC1_AMPLITUDE(1, 0x18) |
+ SUN4I_TVE_DAC1_AMPLITUDE(2, 0x18) |
+ SUN4I_TVE_DAC1_AMPLITUDE(3, 0x18));
+
+ regmap_write(tv->regs, SUN4I_TVE_CB_CR_LVL_REG,
+ SUN4I_TVE_CB_CR_LVL_CB_BURST(tv_mode->burst_levels->cb) |
+ SUN4I_TVE_CB_CR_LVL_CR_BURST(tv_mode->burst_levels->cr));
+
+ /* Set burst width for a composite output */
+ regmap_write(tv->regs, SUN4I_TVE_BURST_WIDTH_REG,
+ SUN4I_TVE_BURST_WIDTH_HSYNC_WIDTH(126) |
+ SUN4I_TVE_BURST_WIDTH_BURST_WIDTH(68) |
+ SUN4I_TVE_BURST_WIDTH_BREEZEWAY(22));
+
+ regmap_write(tv->regs, SUN4I_TVE_CB_CR_GAIN_REG,
+ SUN4I_TVE_CB_CR_GAIN_CB(tv_mode->color_gains->cb) |
+ SUN4I_TVE_CB_CR_GAIN_CR(tv_mode->color_gains->cr));
+
+ regmap_write(tv->regs, SUN4I_TVE_SYNC_VBI_REG,
+ SUN4I_TVE_SYNC_VBI_SYNC(0x10) |
+ SUN4I_TVE_SYNC_VBI_VBLANK(tv_mode->vblank_level));
+
+ regmap_write(tv->regs, SUN4I_TVE_ACTIVE_LINE_REG,
+ SUN4I_TVE_ACTIVE_LINE(1440));
+
+ /* Set composite chroma gain to 50 % */
+ regmap_write(tv->regs, SUN4I_TVE_CHROMA_REG,
+ SUN4I_TVE_CHROMA_COMP_GAIN_50);
+
+ regmap_write(tv->regs, SUN4I_TVE_12C_REG,
+ SUN4I_TVE_12C_COMP_YUV_EN |
+ SUN4I_TVE_12C_NOTCH_WIDTH_WIDE);
+
+ regmap_write(tv->regs, SUN4I_TVE_RESYNC_REG,
+ SUN4I_TVE_RESYNC_PIXEL(tv_mode->resync_params->pixel) |
+ SUN4I_TVE_RESYNC_LINE(tv_mode->resync_params->line) |
+ (tv_mode->resync_params->field ?
+ SUN4I_TVE_RESYNC_FIELD : 0));
+
+ regmap_write(tv->regs, SUN4I_TVE_SLAVE_REG, 0);
+
+ clk_set_rate(tcon->sclk1, mode->crtc_clock * 1000);
+}
+
+static struct drm_encoder_helper_funcs sun4i_tv_helper_funcs = {
+ .atomic_check = sun4i_tv_atomic_check,
+ .disable = sun4i_tv_disable,
+ .enable = sun4i_tv_enable,
+ .mode_set = sun4i_tv_mode_set,
+};
+
+static void sun4i_tv_destroy(struct drm_encoder *encoder)
+{
+ drm_encoder_cleanup(encoder);
+}
+
+static struct drm_encoder_funcs sun4i_tv_funcs = {
+ .destroy = sun4i_tv_destroy,
+};
+
+static int sun4i_tv_comp_get_modes(struct drm_connector *connector)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tv_modes); i++) {
+ struct drm_display_mode *mode = drm_mode_create(connector->dev);
+ struct tv_mode *tv_mode = &tv_modes[i];
+
+ strcpy(mode->name, tv_mode->name);
+
+ sun4i_tv_mode_to_drm_mode(tv_mode, mode);
+ drm_mode_probed_add(connector, mode);
+ }
+
+ return i;
+}
+
+static int sun4i_tv_comp_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ /* TODO */
+ return MODE_OK;
+}
+
+static struct drm_encoder *
+sun4i_tv_comp_best_encoder(struct drm_connector *connector)
+{
+ struct sun4i_tv *tv = drm_connector_to_sun4i_tv(connector);
+
+ return &tv->encoder;
+}
+
+static struct drm_connector_helper_funcs sun4i_tv_comp_connector_helper_funcs = {
+ .get_modes = sun4i_tv_comp_get_modes,
+ .mode_valid = sun4i_tv_comp_mode_valid,
+ .best_encoder = sun4i_tv_comp_best_encoder,
+};
+
+static enum drm_connector_status
+sun4i_tv_comp_connector_detect(struct drm_connector *connector, bool force)
+{
+ return connector_status_connected;
+}
+
+static void
+sun4i_tv_comp_connector_destroy(struct drm_connector *connector)
+{
+ drm_connector_cleanup(connector);
+}
+
+static struct drm_connector_funcs sun4i_tv_comp_connector_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .detect = sun4i_tv_comp_connector_detect,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = sun4i_tv_comp_connector_destroy,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static struct regmap_config sun4i_tv_regmap_config = {
+ .reg_bits = 32,
+ .val_bits = 32,
+ .reg_stride = 4,
+ .max_register = SUN4I_TVE_WSS_DATA2_REG,
+ .name = "tv-encoder",
+};
+
+static int sun4i_tv_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct drm_device *drm = data;
+ struct sun4i_drv *drv = drm->dev_private;
+ struct sun4i_tv *tv;
+ struct resource *res;
+ void __iomem *regs;
+ int ret;
+
+ tv = devm_kzalloc(dev, sizeof(*tv), GFP_KERNEL);
+ if (!tv)
+ return -ENOMEM;
+ tv->drv = drv;
+ dev_set_drvdata(dev, tv);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(regs)) {
+ dev_err(dev, "Couldn't map the TV encoder registers\n");
+ return PTR_ERR(regs);
+ }
+
+ tv->regs = devm_regmap_init_mmio(dev, regs,
+ &sun4i_tv_regmap_config);
+ if (IS_ERR(tv->regs)) {
+ dev_err(dev, "Couldn't create the TV encoder regmap\n");
+ return PTR_ERR(tv->regs);
+ }
+
+ tv->reset = devm_reset_control_get(dev, NULL);
+ if (IS_ERR(tv->reset)) {
+ dev_err(dev, "Couldn't get our reset line\n");
+ return PTR_ERR(tv->reset);
+ }
+
+ ret = reset_control_deassert(tv->reset);
+ if (ret) {
+ dev_err(dev, "Couldn't deassert our reset line\n");
+ return ret;
+ }
+
+ tv->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(tv->clk)) {
+ dev_err(dev, "Couldn't get the TV encoder clock\n");
+ ret = PTR_ERR(tv->clk);
+ goto err_assert_reset;
+ }
+ clk_prepare_enable(tv->clk);
+
+ drm_encoder_helper_add(&tv->encoder,
+ &sun4i_tv_helper_funcs);
+ ret = drm_encoder_init(drm,
+ &tv->encoder,
+ &sun4i_tv_funcs,
+ DRM_MODE_ENCODER_TVDAC,
+ NULL);
+ if (ret) {
+ dev_err(dev, "Couldn't initialise the TV encoder\n");
+ goto err_disable_clk;
+ }
+
+ tv->encoder.possible_crtcs = BIT(0);
+
+ drm_connector_helper_add(&tv->connector,
+ &sun4i_tv_comp_connector_helper_funcs);
+ ret = drm_connector_init(drm, &tv->connector,
+ &sun4i_tv_comp_connector_funcs,
+ DRM_MODE_CONNECTOR_Composite);
+ if (ret) {
+ dev_err(dev,
+ "Couldn't initialise the Composite connector\n");
+ goto err_cleanup_connector;
+ }
+ tv->connector.interlace_allowed = true;
+
+ drm_mode_connector_attach_encoder(&tv->connector, &tv->encoder);
+
+ return 0;
+
+err_cleanup_connector:
+ drm_encoder_cleanup(&tv->encoder);
+err_disable_clk:
+ clk_disable_unprepare(tv->clk);
+err_assert_reset:
+ reset_control_assert(tv->reset);
+ return ret;
+}
+
+static void sun4i_tv_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct sun4i_tv *tv = dev_get_drvdata(dev);
+
+ drm_connector_cleanup(&tv->connector);
+ drm_encoder_cleanup(&tv->encoder);
+ clk_disable_unprepare(tv->clk);
+}
+
+static struct component_ops sun4i_tv_ops = {
+ .bind = sun4i_tv_bind,
+ .unbind = sun4i_tv_unbind,
+};
+
+static int sun4i_tv_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &sun4i_tv_ops);
+}
+
+static int sun4i_tv_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &sun4i_tv_ops);
+
+ return 0;
+}
+
+static const struct of_device_id sun4i_tv_of_table[] = {
+ { .compatible = "allwinner,sun4i-a10-tv-encoder" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sun4i_tv_of_table);
+
+static struct platform_driver sun4i_tv_platform_driver = {
+ .probe = sun4i_tv_probe,
+ .remove = sun4i_tv_remove,
+ .driver = {
+ .name = "sun4i-tve",
+ .of_match_table = sun4i_tv_of_table,
+ },
+};
+module_platform_driver(sun4i_tv_platform_driver);
+
+MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
+MODULE_DESCRIPTION("Allwinner A10 TV Encoder Driver");
+MODULE_LICENSE("GPL");
unsigned int plane);
#ifdef CONFIG_DEBUG_FS
+struct seq_file;
+
int drm_fb_cma_debugfs_show(struct seq_file *m, void *arg);
#endif
projects / cascardo / linux.git / commitdiff