diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun8i_mixer.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_mixer.c | 633 |
1 files changed, 633 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c new file mode 100644 index 000000000..649b57e5e --- /dev/null +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c @@ -0,0 +1,633 @@ +/* + * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io> + * + * Based on sun4i_backend.c, which is: + * Copyright (C) 2015 Free Electrons + * Copyright (C) 2015 NextThing Co + * + * 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/dma-mapping.h> +#include <linux/of_device.h> +#include <linux/of_graph.h> +#include <linux/reset.h> + +#include "sun4i_drv.h" +#include "sun8i_mixer.h" +#include "sun8i_ui_layer.h" +#include "sun8i_vi_layer.h" +#include "sunxi_engine.h" + +static const struct de2_fmt_info de2_formats[] = { + { + .drm_fmt = DRM_FORMAT_ARGB8888, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_ABGR8888, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGBA8888, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGRA8888, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_XRGB8888, + .de2_fmt = SUN8I_MIXER_FBFMT_XRGB8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_XBGR8888, + .de2_fmt = SUN8I_MIXER_FBFMT_XBGR8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGBX8888, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBX8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGRX8888, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRX8888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGB888, + .de2_fmt = SUN8I_MIXER_FBFMT_RGB888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGR888, + .de2_fmt = SUN8I_MIXER_FBFMT_BGR888, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGB565, + .de2_fmt = SUN8I_MIXER_FBFMT_RGB565, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGR565, + .de2_fmt = SUN8I_MIXER_FBFMT_BGR565, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_ARGB4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XRGB4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_ABGR4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XBGR4444, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGBA4444, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_RGBX4444, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGRA4444, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_BGRX4444, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA4444, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_ARGB1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XRGB1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ARGB1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_ABGR1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_XBGR1555, + .de2_fmt = SUN8I_MIXER_FBFMT_ABGR1555, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_RGBA5551, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_RGBX5551, + .de2_fmt = SUN8I_MIXER_FBFMT_RGBA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_BGRA5551, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + /* for DE2 VI layer which ignores alpha */ + .drm_fmt = DRM_FORMAT_BGRX5551, + .de2_fmt = SUN8I_MIXER_FBFMT_BGRA5551, + .rgb = true, + .csc = SUN8I_CSC_MODE_OFF, + }, + { + .drm_fmt = DRM_FORMAT_UYVY, + .de2_fmt = SUN8I_MIXER_FBFMT_UYVY, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_VYUY, + .de2_fmt = SUN8I_MIXER_FBFMT_VYUY, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YUYV, + .de2_fmt = SUN8I_MIXER_FBFMT_YUYV, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YVYU, + .de2_fmt = SUN8I_MIXER_FBFMT_YVYU, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_NV16, + .de2_fmt = SUN8I_MIXER_FBFMT_NV16, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_NV61, + .de2_fmt = SUN8I_MIXER_FBFMT_NV61, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_NV12, + .de2_fmt = SUN8I_MIXER_FBFMT_NV12, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_NV21, + .de2_fmt = SUN8I_MIXER_FBFMT_NV21, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YUV422, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV422, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YUV420, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV420, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YUV411, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV411, + .rgb = false, + .csc = SUN8I_CSC_MODE_YUV2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YVU422, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV422, + .rgb = false, + .csc = SUN8I_CSC_MODE_YVU2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YVU420, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV420, + .rgb = false, + .csc = SUN8I_CSC_MODE_YVU2RGB, + }, + { + .drm_fmt = DRM_FORMAT_YVU411, + .de2_fmt = SUN8I_MIXER_FBFMT_YUV411, + .rgb = false, + .csc = SUN8I_CSC_MODE_YVU2RGB, + }, +}; + +const struct de2_fmt_info *sun8i_mixer_format_info(u32 format) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(de2_formats); ++i) + if (de2_formats[i].drm_fmt == format) + return &de2_formats[i]; + + return NULL; +} + +static void sun8i_mixer_commit(struct sunxi_engine *engine) +{ + DRM_DEBUG_DRIVER("Committing changes\n"); + + regmap_write(engine->regs, SUN8I_MIXER_GLOBAL_DBUFF, + SUN8I_MIXER_GLOBAL_DBUFF_ENABLE); +} + +static struct drm_plane **sun8i_layers_init(struct drm_device *drm, + struct sunxi_engine *engine) +{ + struct drm_plane **planes; + struct sun8i_mixer *mixer = engine_to_sun8i_mixer(engine); + int i; + + planes = devm_kcalloc(drm->dev, + mixer->cfg->vi_num + mixer->cfg->ui_num + 1, + sizeof(*planes), GFP_KERNEL); + if (!planes) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < mixer->cfg->vi_num; i++) { + struct sun8i_vi_layer *layer; + + layer = sun8i_vi_layer_init_one(drm, mixer, i); + if (IS_ERR(layer)) { + dev_err(drm->dev, + "Couldn't initialize overlay plane\n"); + return ERR_CAST(layer); + }; + + planes[i] = &layer->plane; + }; + + for (i = 0; i < mixer->cfg->ui_num; i++) { + struct sun8i_ui_layer *layer; + + layer = sun8i_ui_layer_init_one(drm, mixer, i); + if (IS_ERR(layer)) { + dev_err(drm->dev, "Couldn't initialize %s plane\n", + i ? "overlay" : "primary"); + return ERR_CAST(layer); + }; + + planes[mixer->cfg->vi_num + i] = &layer->plane; + }; + + return planes; +} + +static const struct sunxi_engine_ops sun8i_engine_ops = { + .commit = sun8i_mixer_commit, + .layers_init = sun8i_layers_init, +}; + +static struct regmap_config sun8i_mixer_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .max_register = 0xffffc, /* guessed */ +}; + +static int sun8i_mixer_of_get_id(struct device_node *node) +{ + struct device_node *port, *ep; + int ret = -EINVAL; + + /* output is port 1 */ + port = of_graph_get_port_by_id(node, 1); + if (!port) + return -EINVAL; + + /* try to find downstream endpoint */ + for_each_available_child_of_node(port, ep) { + struct device_node *remote; + u32 reg; + + remote = of_graph_get_remote_endpoint(ep); + if (!remote) + continue; + + ret = of_property_read_u32(remote, "reg", ®); + if (!ret) { + of_node_put(remote); + of_node_put(ep); + of_node_put(port); + + return reg; + } + + of_node_put(remote); + } + + of_node_put(port); + + return ret; +} + +static int sun8i_mixer_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 sun8i_mixer *mixer; + struct resource *res; + void __iomem *regs; + int plane_cnt; + int i, ret; + + /* + * The mixer uses single 32-bit register to store memory + * addresses, so that it cannot deal with 64-bit memory + * addresses. + * Restrict the DMA mask so that the mixer won't be + * allocated some memory that is too high. + */ + ret = dma_set_mask(dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(dev, "Cannot do 32-bit DMA.\n"); + return ret; + } + + mixer = devm_kzalloc(dev, sizeof(*mixer), GFP_KERNEL); + if (!mixer) + return -ENOMEM; + dev_set_drvdata(dev, mixer); + mixer->engine.ops = &sun8i_engine_ops; + mixer->engine.node = dev->of_node; + + /* + * While this function can fail, we shouldn't do anything + * if this happens. Some early DE2 DT entries don't provide + * mixer id but work nevertheless because matching between + * TCON and mixer is done by comparing node pointers (old + * way) instead comparing ids. If this function fails and + * id is needed, it will fail during id matching anyway. + */ + mixer->engine.id = sun8i_mixer_of_get_id(dev->of_node); + + mixer->cfg = of_device_get_match_data(dev); + if (!mixer->cfg) + return -EINVAL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + regs = devm_ioremap_resource(dev, res); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + mixer->engine.regs = devm_regmap_init_mmio(dev, regs, + &sun8i_mixer_regmap_config); + if (IS_ERR(mixer->engine.regs)) { + dev_err(dev, "Couldn't create the mixer regmap\n"); + return PTR_ERR(mixer->engine.regs); + } + + mixer->reset = devm_reset_control_get(dev, NULL); + if (IS_ERR(mixer->reset)) { + dev_err(dev, "Couldn't get our reset line\n"); + return PTR_ERR(mixer->reset); + } + + ret = reset_control_deassert(mixer->reset); + if (ret) { + dev_err(dev, "Couldn't deassert our reset line\n"); + return ret; + } + + mixer->bus_clk = devm_clk_get(dev, "bus"); + if (IS_ERR(mixer->bus_clk)) { + dev_err(dev, "Couldn't get the mixer bus clock\n"); + ret = PTR_ERR(mixer->bus_clk); + goto err_assert_reset; + } + clk_prepare_enable(mixer->bus_clk); + + mixer->mod_clk = devm_clk_get(dev, "mod"); + if (IS_ERR(mixer->mod_clk)) { + dev_err(dev, "Couldn't get the mixer module clock\n"); + ret = PTR_ERR(mixer->mod_clk); + goto err_disable_bus_clk; + } + + /* + * It seems that we need to enforce that rate for whatever + * reason for the mixer to be functional. Make sure it's the + * case. + */ + if (mixer->cfg->mod_rate) + clk_set_rate(mixer->mod_clk, mixer->cfg->mod_rate); + + clk_prepare_enable(mixer->mod_clk); + + list_add_tail(&mixer->engine.list, &drv->engine_list); + + /* Reset the registers */ + for (i = 0x0; i < 0x20000; i += 4) + regmap_write(mixer->engine.regs, i, 0); + + /* Enable the mixer */ + regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_CTL, + SUN8I_MIXER_GLOBAL_CTL_RT_EN); + + /* Set background color to black */ + regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_BKCOLOR, + SUN8I_MIXER_BLEND_COLOR_BLACK); + + /* + * Set fill color of bottom plane to black. Generally not needed + * except when VI plane is at bottom (zpos = 0) and enabled. + */ + regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL, + SUN8I_MIXER_BLEND_PIPE_CTL_FC_EN(0)); + regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ATTR_FCOLOR(0), + SUN8I_MIXER_BLEND_COLOR_BLACK); + + plane_cnt = mixer->cfg->vi_num + mixer->cfg->ui_num; + for (i = 0; i < plane_cnt; i++) + regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_MODE(i), + SUN8I_MIXER_BLEND_MODE_DEF); + + regmap_update_bits(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL, + SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK, 0); + + return 0; + +err_disable_bus_clk: + clk_disable_unprepare(mixer->bus_clk); +err_assert_reset: + reset_control_assert(mixer->reset); + return ret; +} + +static void sun8i_mixer_unbind(struct device *dev, struct device *master, + void *data) +{ + struct sun8i_mixer *mixer = dev_get_drvdata(dev); + + list_del(&mixer->engine.list); + + clk_disable_unprepare(mixer->mod_clk); + clk_disable_unprepare(mixer->bus_clk); + reset_control_assert(mixer->reset); +} + +static const struct component_ops sun8i_mixer_ops = { + .bind = sun8i_mixer_bind, + .unbind = sun8i_mixer_unbind, +}; + +static int sun8i_mixer_probe(struct platform_device *pdev) +{ + return component_add(&pdev->dev, &sun8i_mixer_ops); +} + +static int sun8i_mixer_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &sun8i_mixer_ops); + + return 0; +} + +static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = { + .ccsc = 0, + .scaler_mask = 0xf, + .ui_num = 3, + .vi_num = 1, +}; + +static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = { + .ccsc = 1, + .scaler_mask = 0x3, + .ui_num = 1, + .vi_num = 1, +}; + +static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = { + .ccsc = 0, + .mod_rate = 432000000, + .scaler_mask = 0xf, + .ui_num = 3, + .vi_num = 1, +}; + +static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = { + .vi_num = 2, + .ui_num = 1, + .scaler_mask = 0x3, + .ccsc = 0, + .mod_rate = 150000000, +}; + +static const struct of_device_id sun8i_mixer_of_table[] = { + { + .compatible = "allwinner,sun8i-a83t-de2-mixer-0", + .data = &sun8i_a83t_mixer0_cfg, + }, + { + .compatible = "allwinner,sun8i-a83t-de2-mixer-1", + .data = &sun8i_a83t_mixer1_cfg, + }, + { + .compatible = "allwinner,sun8i-h3-de2-mixer-0", + .data = &sun8i_h3_mixer0_cfg, + }, + { + .compatible = "allwinner,sun8i-v3s-de2-mixer", + .data = &sun8i_v3s_mixer_cfg, + }, + { } +}; +MODULE_DEVICE_TABLE(of, sun8i_mixer_of_table); + +static struct platform_driver sun8i_mixer_platform_driver = { + .probe = sun8i_mixer_probe, + .remove = sun8i_mixer_remove, + .driver = { + .name = "sun8i-mixer", + .of_match_table = sun8i_mixer_of_table, + }, +}; +module_platform_driver(sun8i_mixer_platform_driver); + +MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>"); +MODULE_DESCRIPTION("Allwinner DE2 Mixer driver"); +MODULE_LICENSE("GPL"); |