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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) STMicroelectronics SA 20144 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>5 * Fabien Dessenne <fabien.dessenne@st.com>6 * for STMicroelectronics.7 */8 9#include <linux/component.h>10#include <linux/io.h>11#include <linux/module.h>12#include <linux/of.h>13#include <linux/platform_device.h>14#include <linux/reset.h>15 16#include <drm/drm_device.h>17#include <drm/drm_print.h>18#include <drm/drm_vblank.h>19 20#include "sti_compositor.h"21#include "sti_crtc.h"22#include "sti_cursor.h"23#include "sti_drv.h"24#include "sti_gdp.h"25#include "sti_plane.h"26#include "sti_vid.h"27#include "sti_vtg.h"28 29/*30 * stiH407 compositor properties31 */32static const struct sti_compositor_data stih407_compositor_data = {33 .nb_subdev = 8,34 .subdev_desc = {35 {STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},36 {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},37 {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},38 {STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},39 {STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},40 {STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700},41 {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},42 {STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},43 },44};45 46void sti_compositor_debugfs_init(struct sti_compositor *compo,47 struct drm_minor *minor)48{49 unsigned int i;50 51 for (i = 0; i < STI_MAX_VID; i++)52 if (compo->vid[i])53 vid_debugfs_init(compo->vid[i], minor);54 55 for (i = 0; i < STI_MAX_MIXER; i++)56 if (compo->mixer[i])57 sti_mixer_debugfs_init(compo->mixer[i], minor);58}59 60static int sti_compositor_bind(struct device *dev,61 struct device *master,62 void *data)63{64 struct sti_compositor *compo = dev_get_drvdata(dev);65 struct drm_device *drm_dev = data;66 unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0;67 struct sti_private *dev_priv = drm_dev->dev_private;68 struct drm_plane *cursor = NULL;69 struct drm_plane *primary = NULL;70 struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc;71 unsigned int array_size = compo->data.nb_subdev;72 73 dev_priv->compo = compo;74 75 /* Register mixer subdev and video subdev first */76 for (i = 0; i < array_size; i++) {77 switch (desc[i].type) {78 case STI_VID_SUBDEV:79 compo->vid[vid_id++] =80 sti_vid_create(compo->dev, drm_dev, desc[i].id,81 compo->regs + desc[i].offset);82 break;83 case STI_MIXER_MAIN_SUBDEV:84 case STI_MIXER_AUX_SUBDEV:85 compo->mixer[mixer_id++] =86 sti_mixer_create(compo->dev, drm_dev, desc[i].id,87 compo->regs + desc[i].offset);88 break;89 case STI_GPD_SUBDEV:90 case STI_CURSOR_SUBDEV:91 /* Nothing to do, wait for the second round */92 break;93 default:94 DRM_ERROR("Unknown subdev component type\n");95 return 1;96 }97 }98 99 /* Register the other subdevs, create crtc and planes */100 for (i = 0; i < array_size; i++) {101 enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;102 103 if (crtc_id < mixer_id)104 plane_type = DRM_PLANE_TYPE_PRIMARY;105 106 switch (desc[i].type) {107 case STI_MIXER_MAIN_SUBDEV:108 case STI_MIXER_AUX_SUBDEV:109 case STI_VID_SUBDEV:110 /* Nothing to do, already done at the first round */111 break;112 case STI_CURSOR_SUBDEV:113 cursor = sti_cursor_create(drm_dev, compo->dev,114 desc[i].id,115 compo->regs + desc[i].offset,116 1);117 if (!cursor) {118 DRM_ERROR("Can't create CURSOR plane\n");119 break;120 }121 break;122 case STI_GPD_SUBDEV:123 primary = sti_gdp_create(drm_dev, compo->dev,124 desc[i].id,125 compo->regs + desc[i].offset,126 (1 << mixer_id) - 1,127 plane_type);128 if (!primary) {129 DRM_ERROR("Can't create GDP plane\n");130 break;131 }132 break;133 default:134 DRM_ERROR("Unknown subdev component type\n");135 return 1;136 }137 138 /* The first planes are reserved for primary planes*/139 if (crtc_id < mixer_id && primary) {140 sti_crtc_init(drm_dev, compo->mixer[crtc_id],141 primary, cursor);142 crtc_id++;143 cursor = NULL;144 primary = NULL;145 }146 }147 148 drm_vblank_init(drm_dev, crtc_id);149 150 return 0;151}152 153static void sti_compositor_unbind(struct device *dev, struct device *master,154 void *data)155{156 /* do nothing */157}158 159static const struct component_ops sti_compositor_ops = {160 .bind = sti_compositor_bind,161 .unbind = sti_compositor_unbind,162};163 164static const struct of_device_id compositor_of_match[] = {165 {166 .compatible = "st,stih407-compositor",167 .data = &stih407_compositor_data,168 }, {169 /* end node */170 }171};172MODULE_DEVICE_TABLE(of, compositor_of_match);173 174static int sti_compositor_probe(struct platform_device *pdev)175{176 struct device *dev = &pdev->dev;177 struct device_node *np = dev->of_node;178 struct device_node *vtg_np;179 struct sti_compositor *compo;180 struct resource *res;181 unsigned int i;182 183 compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);184 if (!compo) {185 DRM_ERROR("Failed to allocate compositor context\n");186 return -ENOMEM;187 }188 compo->dev = dev;189 for (i = 0; i < STI_MAX_MIXER; i++)190 compo->vtg_vblank_nb[i].notifier_call = sti_crtc_vblank_cb;191 192 /* populate data structure depending on compatibility */193 BUG_ON(!of_match_node(compositor_of_match, np)->data);194 195 memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,196 sizeof(struct sti_compositor_data));197 198 /* Get Memory ressources */199 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);200 if (res == NULL) {201 DRM_ERROR("Get memory resource failed\n");202 return -ENXIO;203 }204 compo->regs = devm_ioremap(dev, res->start, resource_size(res));205 if (compo->regs == NULL) {206 DRM_ERROR("Register mapping failed\n");207 return -ENXIO;208 }209 210 /* Get clock resources */211 compo->clk_compo_main = devm_clk_get(dev, "compo_main");212 if (IS_ERR(compo->clk_compo_main)) {213 DRM_ERROR("Cannot get compo_main clock\n");214 return PTR_ERR(compo->clk_compo_main);215 }216 217 compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");218 if (IS_ERR(compo->clk_compo_aux)) {219 DRM_ERROR("Cannot get compo_aux clock\n");220 return PTR_ERR(compo->clk_compo_aux);221 }222 223 compo->clk_pix_main = devm_clk_get(dev, "pix_main");224 if (IS_ERR(compo->clk_pix_main)) {225 DRM_ERROR("Cannot get pix_main clock\n");226 return PTR_ERR(compo->clk_pix_main);227 }228 229 compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");230 if (IS_ERR(compo->clk_pix_aux)) {231 DRM_ERROR("Cannot get pix_aux clock\n");232 return PTR_ERR(compo->clk_pix_aux);233 }234 235 /* Get reset resources */236 compo->rst_main = devm_reset_control_get_shared(dev, "compo-main");237 /* Take compo main out of reset */238 if (!IS_ERR(compo->rst_main))239 reset_control_deassert(compo->rst_main);240 241 compo->rst_aux = devm_reset_control_get_shared(dev, "compo-aux");242 /* Take compo aux out of reset */243 if (!IS_ERR(compo->rst_aux))244 reset_control_deassert(compo->rst_aux);245 246 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);247 if (vtg_np)248 compo->vtg[STI_MIXER_MAIN] = of_vtg_find(vtg_np);249 of_node_put(vtg_np);250 251 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);252 if (vtg_np)253 compo->vtg[STI_MIXER_AUX] = of_vtg_find(vtg_np);254 of_node_put(vtg_np);255 256 platform_set_drvdata(pdev, compo);257 258 return component_add(&pdev->dev, &sti_compositor_ops);259}260 261static void sti_compositor_remove(struct platform_device *pdev)262{263 component_del(&pdev->dev, &sti_compositor_ops);264}265 266struct platform_driver sti_compositor_driver = {267 .driver = {268 .name = "sti-compositor",269 .of_match_table = compositor_of_match,270 },271 .probe = sti_compositor_probe,272 .remove_new = sti_compositor_remove,273};274 275MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");276MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");277MODULE_LICENSE("GPL");278