--- /dev/null
+/*
+ * Copyright (C) STMicroelectronics SA 2014
+ * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
+ * Fabien Dessenne <fabien.dessenne@st.com>
+ * for STMicroelectronics.
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include <drm/drmP.h>
+
+#include "sti_compositor.h"
+#include "sti_drm_crtc.h"
+#include "sti_drm_drv.h"
+#include "sti_drm_plane.h"
+#include "sti_gdp.h"
+#include "sti_vtg.h"
+
+/*
+ * stiH407 compositor properties
+ */
+struct sti_compositor_data stih407_compositor_data = {
+ .nb_subdev = 8,
+ .subdev_desc = {
+ {STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},
+ {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
+ {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
+ {STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},
+ {STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},
+ {STI_VID_SUBDEV, (int)STI_VID_0, 0x700},
+ {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},
+ {STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},
+ },
+};
+
+/*
+ * stiH416 compositor properties
+ * Note:
+ * on stih416 MIXER_AUX has a different base address from MIXER_MAIN
+ * Moreover, GDPx is different for Main and Aux Mixer. So this subdev map does
+ * not fit for stiH416 if we want to enable the MIXER_AUX.
+ */
+struct sti_compositor_data stih416_compositor_data = {
+ .nb_subdev = 3,
+ .subdev_desc = {
+ {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
+ {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
+ {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00}
+ },
+};
+
+static int sti_compositor_init_subdev(struct sti_compositor *compo,
+ struct sti_compositor_subdev_descriptor *desc,
+ unsigned int array_size)
+{
+ unsigned int i, mixer_id = 0, layer_id = 0;
+
+ for (i = 0; i < array_size; i++) {
+ switch (desc[i].type) {
+ case STI_MIXER_MAIN_SUBDEV:
+ case STI_MIXER_AUX_SUBDEV:
+ compo->mixer[mixer_id++] =
+ sti_mixer_create(compo->dev, desc[i].id,
+ compo->regs + desc[i].offset);
+ break;
+ case STI_GPD_SUBDEV:
+ case STI_VID_SUBDEV:
+ case STI_CURSOR_SUBDEV:
+ compo->layer[layer_id++] =
+ sti_layer_create(compo->dev, desc[i].id,
+ compo->regs + desc[i].offset);
+ break;
+ default:
+ DRM_ERROR("Unknow subdev compoment type\n");
+ return 1;
+ }
+
+ }
+ compo->nb_mixers = mixer_id;
+ compo->nb_layers = layer_id;
+
+ return 0;
+}
+
+static int sti_compositor_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct sti_compositor *compo = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+ unsigned int i, crtc = 0, plane = 0;
+ struct sti_drm_private *dev_priv = drm_dev->dev_private;
+ struct drm_plane *cursor = NULL;
+ struct drm_plane *primary = NULL;
+
+ dev_priv->compo = compo;
+
+ for (i = 0; i < compo->nb_layers; i++) {
+ if (compo->layer[i]) {
+ enum sti_layer_desc desc = compo->layer[i]->desc;
+ enum sti_layer_type type = desc & STI_LAYER_TYPE_MASK;
+ enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;
+
+ if (crtc < compo->nb_mixers)
+ plane_type = DRM_PLANE_TYPE_PRIMARY;
+
+ switch (type) {
+ case STI_CUR:
+ cursor = sti_drm_plane_init(drm_dev,
+ compo->layer[i],
+ 1, DRM_PLANE_TYPE_CURSOR);
+ break;
+ case STI_GDP:
+ case STI_VID:
+ primary = sti_drm_plane_init(drm_dev,
+ compo->layer[i],
+ (1 << compo->nb_mixers) - 1,
+ plane_type);
+ plane++;
+ break;
+ case STI_BCK:
+ case STI_VDP:
+ break;
+ }
+
+ /* The first planes are reserved for primary planes*/
+ if (crtc < compo->nb_mixers && primary) {
+ sti_drm_crtc_init(drm_dev, compo->mixer[crtc],
+ primary, cursor);
+ crtc++;
+ cursor = NULL;
+ primary = NULL;
+ }
+ }
+ }
+
+ drm_vblank_init(drm_dev, crtc);
+ /* Allow usage of vblank without having to call drm_irq_install */
+ drm_dev->irq_enabled = 1;
+
+ DRM_DEBUG_DRIVER("Initialized %d DRM CRTC(s) and %d DRM plane(s)\n",
+ crtc, plane);
+ DRM_DEBUG_DRIVER("DRM plane(s) for VID/VDP not created yet\n");
+
+ return 0;
+}
+
+static void sti_compositor_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ /* do nothing */
+}
+
+static const struct component_ops sti_compositor_ops = {
+ .bind = sti_compositor_bind,
+ .unbind = sti_compositor_unbind,
+};
+
+static const struct of_device_id compositor_of_match[] = {
+ {
+ .compatible = "st,stih416-compositor",
+ .data = &stih416_compositor_data,
+ }, {
+ .compatible = "st,stih407-compositor",
+ .data = &stih407_compositor_data,
+ }, {
+ /* end node */
+ }
+};
+MODULE_DEVICE_TABLE(of, compositor_of_match);
+
+static int sti_compositor_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct device_node *vtg_np;
+ struct sti_compositor *compo;
+ struct resource *res;
+ int err;
+
+ compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);
+ if (!compo) {
+ DRM_ERROR("Failed to allocate compositor context\n");
+ return -ENOMEM;
+ }
+ compo->dev = dev;
+ compo->vtg_vblank_nb.notifier_call = sti_drm_crtc_vblank_cb;
+
+ /* populate data structure depending on compatibility */
+ BUG_ON(!of_match_node(compositor_of_match, np)->data);
+
+ memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,
+ sizeof(struct sti_compositor_data));
+
+ /* Get Memory ressources */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ DRM_ERROR("Get memory resource failed\n");
+ return -ENXIO;
+ }
+ compo->regs = devm_ioremap(dev, res->start, resource_size(res));
+ if (compo->regs == NULL) {
+ DRM_ERROR("Register mapping failed\n");
+ return -ENXIO;
+ }
+
+ /* Get clock resources */
+ compo->clk_compo_main = devm_clk_get(dev, "compo_main");
+ if (IS_ERR(compo->clk_compo_main)) {
+ DRM_ERROR("Cannot get compo_main clock\n");
+ return PTR_ERR(compo->clk_compo_main);
+ }
+
+ compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");
+ if (IS_ERR(compo->clk_compo_aux)) {
+ DRM_ERROR("Cannot get compo_aux clock\n");
+ return PTR_ERR(compo->clk_compo_aux);
+ }
+
+ compo->clk_pix_main = devm_clk_get(dev, "pix_main");
+ if (IS_ERR(compo->clk_pix_main)) {
+ DRM_ERROR("Cannot get pix_main clock\n");
+ return PTR_ERR(compo->clk_pix_main);
+ }
+
+ compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");
+ if (IS_ERR(compo->clk_pix_aux)) {
+ DRM_ERROR("Cannot get pix_aux clock\n");
+ return PTR_ERR(compo->clk_pix_aux);
+ }
+
+ /* Get reset resources */
+ compo->rst_main = devm_reset_control_get(dev, "compo-main");
+ /* Take compo main out of reset */
+ if (!IS_ERR(compo->rst_main))
+ reset_control_deassert(compo->rst_main);
+
+ compo->rst_aux = devm_reset_control_get(dev, "compo-aux");
+ /* Take compo aux out of reset */
+ if (!IS_ERR(compo->rst_aux))
+ reset_control_deassert(compo->rst_aux);
+
+ vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
+ if (vtg_np)
+ compo->vtg_main = of_vtg_find(vtg_np);
+
+ vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);
+ if (vtg_np)
+ compo->vtg_aux = of_vtg_find(vtg_np);
+
+ /* Initialize compositor subdevices */
+ err = sti_compositor_init_subdev(compo, compo->data.subdev_desc,
+ compo->data.nb_subdev);
+ if (err)
+ return err;
+
+ platform_set_drvdata(pdev, compo);
+
+ return component_add(&pdev->dev, &sti_compositor_ops);
+}
+
+static int sti_compositor_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &sti_compositor_ops);
+ return 0;
+}
+
+static struct platform_driver sti_compositor_driver = {
+ .driver = {
+ .name = "sti-compositor",
+ .of_match_table = compositor_of_match,
+ },
+ .probe = sti_compositor_probe,
+ .remove = sti_compositor_remove,
+};
+
+module_platform_driver(sti_compositor_driver);
+
+MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
+MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff