278 lines
7.3 KiB
C
278 lines
7.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) STMicroelectronics SA 2014
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* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
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* Fabien Dessenne <fabien.dessenne@st.com>
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* for STMicroelectronics.
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*/
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#include <linux/component.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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#include <drm/drm_device.h>
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#include <drm/drm_print.h>
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#include <drm/drm_vblank.h>
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#include "sti_compositor.h"
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#include "sti_crtc.h"
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#include "sti_cursor.h"
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#include "sti_drv.h"
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#include "sti_gdp.h"
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#include "sti_plane.h"
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#include "sti_vid.h"
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#include "sti_vtg.h"
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/*
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* stiH407 compositor properties
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*/
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static const struct sti_compositor_data stih407_compositor_data = {
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.nb_subdev = 8,
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.subdev_desc = {
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{STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},
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{STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
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{STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
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{STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},
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{STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},
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{STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700},
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{STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},
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{STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},
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},
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};
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void sti_compositor_debugfs_init(struct sti_compositor *compo,
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struct drm_minor *minor)
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{
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unsigned int i;
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for (i = 0; i < STI_MAX_VID; i++)
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if (compo->vid[i])
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vid_debugfs_init(compo->vid[i], minor);
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for (i = 0; i < STI_MAX_MIXER; i++)
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if (compo->mixer[i])
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sti_mixer_debugfs_init(compo->mixer[i], minor);
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}
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static int sti_compositor_bind(struct device *dev,
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struct device *master,
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void *data)
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{
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struct sti_compositor *compo = dev_get_drvdata(dev);
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struct drm_device *drm_dev = data;
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unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0;
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struct sti_private *dev_priv = drm_dev->dev_private;
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struct drm_plane *cursor = NULL;
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struct drm_plane *primary = NULL;
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struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc;
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unsigned int array_size = compo->data.nb_subdev;
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dev_priv->compo = compo;
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/* Register mixer subdev and video subdev first */
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for (i = 0; i < array_size; i++) {
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switch (desc[i].type) {
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case STI_VID_SUBDEV:
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compo->vid[vid_id++] =
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sti_vid_create(compo->dev, drm_dev, desc[i].id,
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compo->regs + desc[i].offset);
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break;
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case STI_MIXER_MAIN_SUBDEV:
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case STI_MIXER_AUX_SUBDEV:
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compo->mixer[mixer_id++] =
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sti_mixer_create(compo->dev, drm_dev, desc[i].id,
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compo->regs + desc[i].offset);
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break;
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case STI_GPD_SUBDEV:
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case STI_CURSOR_SUBDEV:
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/* Nothing to do, wait for the second round */
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break;
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default:
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DRM_ERROR("Unknown subdev component type\n");
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return 1;
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}
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}
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/* Register the other subdevs, create crtc and planes */
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for (i = 0; i < array_size; i++) {
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enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;
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if (crtc_id < mixer_id)
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plane_type = DRM_PLANE_TYPE_PRIMARY;
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switch (desc[i].type) {
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case STI_MIXER_MAIN_SUBDEV:
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case STI_MIXER_AUX_SUBDEV:
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case STI_VID_SUBDEV:
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/* Nothing to do, already done at the first round */
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break;
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case STI_CURSOR_SUBDEV:
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cursor = sti_cursor_create(drm_dev, compo->dev,
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desc[i].id,
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compo->regs + desc[i].offset,
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1);
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if (!cursor) {
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DRM_ERROR("Can't create CURSOR plane\n");
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break;
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}
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break;
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case STI_GPD_SUBDEV:
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primary = sti_gdp_create(drm_dev, compo->dev,
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desc[i].id,
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compo->regs + desc[i].offset,
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(1 << mixer_id) - 1,
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plane_type);
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if (!primary) {
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DRM_ERROR("Can't create GDP plane\n");
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break;
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}
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break;
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default:
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DRM_ERROR("Unknown subdev component type\n");
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return 1;
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}
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/* The first planes are reserved for primary planes*/
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if (crtc_id < mixer_id && primary) {
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sti_crtc_init(drm_dev, compo->mixer[crtc_id],
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primary, cursor);
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crtc_id++;
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cursor = NULL;
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primary = NULL;
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}
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}
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drm_vblank_init(drm_dev, crtc_id);
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return 0;
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}
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static void sti_compositor_unbind(struct device *dev, struct device *master,
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void *data)
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{
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/* do nothing */
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}
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static const struct component_ops sti_compositor_ops = {
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.bind = sti_compositor_bind,
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.unbind = sti_compositor_unbind,
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};
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static const struct of_device_id compositor_of_match[] = {
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{
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.compatible = "st,stih407-compositor",
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.data = &stih407_compositor_data,
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}, {
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/* end node */
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}
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};
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MODULE_DEVICE_TABLE(of, compositor_of_match);
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static int sti_compositor_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct device_node *np = dev->of_node;
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struct device_node *vtg_np;
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struct sti_compositor *compo;
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struct resource *res;
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unsigned int i;
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compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);
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if (!compo) {
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DRM_ERROR("Failed to allocate compositor context\n");
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return -ENOMEM;
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}
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compo->dev = dev;
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for (i = 0; i < STI_MAX_MIXER; i++)
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compo->vtg_vblank_nb[i].notifier_call = sti_crtc_vblank_cb;
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/* populate data structure depending on compatibility */
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BUG_ON(!of_match_node(compositor_of_match, np)->data);
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memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,
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sizeof(struct sti_compositor_data));
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/* Get Memory ressources */
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (res == NULL) {
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DRM_ERROR("Get memory resource failed\n");
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return -ENXIO;
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}
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compo->regs = devm_ioremap(dev, res->start, resource_size(res));
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if (compo->regs == NULL) {
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DRM_ERROR("Register mapping failed\n");
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return -ENXIO;
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}
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/* Get clock resources */
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compo->clk_compo_main = devm_clk_get(dev, "compo_main");
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if (IS_ERR(compo->clk_compo_main)) {
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DRM_ERROR("Cannot get compo_main clock\n");
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return PTR_ERR(compo->clk_compo_main);
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}
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compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");
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if (IS_ERR(compo->clk_compo_aux)) {
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DRM_ERROR("Cannot get compo_aux clock\n");
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return PTR_ERR(compo->clk_compo_aux);
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}
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compo->clk_pix_main = devm_clk_get(dev, "pix_main");
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if (IS_ERR(compo->clk_pix_main)) {
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DRM_ERROR("Cannot get pix_main clock\n");
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return PTR_ERR(compo->clk_pix_main);
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}
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compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");
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if (IS_ERR(compo->clk_pix_aux)) {
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DRM_ERROR("Cannot get pix_aux clock\n");
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return PTR_ERR(compo->clk_pix_aux);
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}
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/* Get reset resources */
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compo->rst_main = devm_reset_control_get_shared(dev, "compo-main");
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/* Take compo main out of reset */
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if (!IS_ERR(compo->rst_main))
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reset_control_deassert(compo->rst_main);
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compo->rst_aux = devm_reset_control_get_shared(dev, "compo-aux");
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/* Take compo aux out of reset */
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if (!IS_ERR(compo->rst_aux))
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reset_control_deassert(compo->rst_aux);
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vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
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if (vtg_np)
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compo->vtg[STI_MIXER_MAIN] = of_vtg_find(vtg_np);
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of_node_put(vtg_np);
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vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);
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if (vtg_np)
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compo->vtg[STI_MIXER_AUX] = of_vtg_find(vtg_np);
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of_node_put(vtg_np);
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platform_set_drvdata(pdev, compo);
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return component_add(&pdev->dev, &sti_compositor_ops);
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}
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static int sti_compositor_remove(struct platform_device *pdev)
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{
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component_del(&pdev->dev, &sti_compositor_ops);
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return 0;
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}
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struct platform_driver sti_compositor_driver = {
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.driver = {
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.name = "sti-compositor",
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.of_match_table = compositor_of_match,
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},
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.probe = sti_compositor_probe,
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.remove = sti_compositor_remove,
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};
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MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
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MODULE_LICENSE("GPL");
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