2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Fabien Dessenne <fabien.dessenne@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
9 #include <linux/component.h>
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <linux/reset.h>
16 #include "sti_compositor.h"
18 #include "sti_cursor.h"
21 #include "sti_plane.h"
26 * stiH407 compositor properties
28 struct sti_compositor_data stih407_compositor_data = {
31 {STI_CURSOR_SUBDEV, (int)STI_CURSOR, 0x000},
32 {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
33 {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
34 {STI_GPD_SUBDEV, (int)STI_GDP_2, 0x300},
35 {STI_GPD_SUBDEV, (int)STI_GDP_3, 0x400},
36 {STI_VID_SUBDEV, (int)STI_HQVDP_0, 0x700},
37 {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00},
38 {STI_MIXER_AUX_SUBDEV, STI_MIXER_AUX, 0xD00},
43 * stiH416 compositor properties
45 * on stih416 MIXER_AUX has a different base address from MIXER_MAIN
46 * Moreover, GDPx is different for Main and Aux Mixer. So this subdev map does
47 * not fit for stiH416 if we want to enable the MIXER_AUX.
49 struct sti_compositor_data stih416_compositor_data = {
52 {STI_GPD_SUBDEV, (int)STI_GDP_0, 0x100},
53 {STI_GPD_SUBDEV, (int)STI_GDP_1, 0x200},
54 {STI_MIXER_MAIN_SUBDEV, STI_MIXER_MAIN, 0xC00}
58 static int sti_compositor_bind(struct device *dev,
59 struct device *master,
62 struct sti_compositor *compo = dev_get_drvdata(dev);
63 struct drm_device *drm_dev = data;
64 unsigned int i, mixer_id = 0, vid_id = 0, crtc_id = 0;
65 struct sti_private *dev_priv = drm_dev->dev_private;
66 struct drm_plane *cursor = NULL;
67 struct drm_plane *primary = NULL;
68 struct sti_compositor_subdev_descriptor *desc = compo->data.subdev_desc;
69 unsigned int array_size = compo->data.nb_subdev;
71 dev_priv->compo = compo;
73 /* Register mixer subdev and video subdev first */
74 for (i = 0; i < array_size; i++) {
75 switch (desc[i].type) {
77 compo->vid[vid_id++] =
78 sti_vid_create(compo->dev, desc[i].id,
79 compo->regs + desc[i].offset);
81 case STI_MIXER_MAIN_SUBDEV:
82 case STI_MIXER_AUX_SUBDEV:
83 compo->mixer[mixer_id++] =
84 sti_mixer_create(compo->dev, desc[i].id,
85 compo->regs + desc[i].offset);
88 case STI_CURSOR_SUBDEV:
89 /* Nothing to do, wait for the second round */
92 DRM_ERROR("Unknow subdev compoment type\n");
97 /* Register the other subdevs, create crtc and planes */
98 for (i = 0; i < array_size; i++) {
99 enum drm_plane_type plane_type = DRM_PLANE_TYPE_OVERLAY;
101 if (crtc_id < mixer_id)
102 plane_type = DRM_PLANE_TYPE_PRIMARY;
104 switch (desc[i].type) {
105 case STI_MIXER_MAIN_SUBDEV:
106 case STI_MIXER_AUX_SUBDEV:
108 /* Nothing to do, already done at the first round */
110 case STI_CURSOR_SUBDEV:
111 cursor = sti_cursor_create(drm_dev, compo->dev,
113 compo->regs + desc[i].offset,
116 DRM_ERROR("Can't create CURSOR plane\n");
121 primary = sti_gdp_create(drm_dev, compo->dev,
123 compo->regs + desc[i].offset,
127 DRM_ERROR("Can't create GDP plane\n");
132 DRM_ERROR("Unknown subdev compoment type\n");
136 /* The first planes are reserved for primary planes*/
137 if (crtc_id < mixer_id && primary) {
138 sti_crtc_init(drm_dev, compo->mixer[crtc_id],
146 drm_vblank_init(drm_dev, crtc_id);
147 /* Allow usage of vblank without having to call drm_irq_install */
148 drm_dev->irq_enabled = 1;
153 static void sti_compositor_unbind(struct device *dev, struct device *master,
159 static const struct component_ops sti_compositor_ops = {
160 .bind = sti_compositor_bind,
161 .unbind = sti_compositor_unbind,
164 static const struct of_device_id compositor_of_match[] = {
166 .compatible = "st,stih416-compositor",
167 .data = &stih416_compositor_data,
169 .compatible = "st,stih407-compositor",
170 .data = &stih407_compositor_data,
175 MODULE_DEVICE_TABLE(of, compositor_of_match);
177 static int sti_compositor_probe(struct platform_device *pdev)
179 struct device *dev = &pdev->dev;
180 struct device_node *np = dev->of_node;
181 struct device_node *vtg_np;
182 struct sti_compositor *compo;
183 struct resource *res;
185 compo = devm_kzalloc(dev, sizeof(*compo), GFP_KERNEL);
187 DRM_ERROR("Failed to allocate compositor context\n");
191 compo->vtg_vblank_nb.notifier_call = sti_crtc_vblank_cb;
193 /* populate data structure depending on compatibility */
194 BUG_ON(!of_match_node(compositor_of_match, np)->data);
196 memcpy(&compo->data, of_match_node(compositor_of_match, np)->data,
197 sizeof(struct sti_compositor_data));
199 /* Get Memory ressources */
200 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
202 DRM_ERROR("Get memory resource failed\n");
205 compo->regs = devm_ioremap(dev, res->start, resource_size(res));
206 if (compo->regs == NULL) {
207 DRM_ERROR("Register mapping failed\n");
211 /* Get clock resources */
212 compo->clk_compo_main = devm_clk_get(dev, "compo_main");
213 if (IS_ERR(compo->clk_compo_main)) {
214 DRM_ERROR("Cannot get compo_main clock\n");
215 return PTR_ERR(compo->clk_compo_main);
218 compo->clk_compo_aux = devm_clk_get(dev, "compo_aux");
219 if (IS_ERR(compo->clk_compo_aux)) {
220 DRM_ERROR("Cannot get compo_aux clock\n");
221 return PTR_ERR(compo->clk_compo_aux);
224 compo->clk_pix_main = devm_clk_get(dev, "pix_main");
225 if (IS_ERR(compo->clk_pix_main)) {
226 DRM_ERROR("Cannot get pix_main clock\n");
227 return PTR_ERR(compo->clk_pix_main);
230 compo->clk_pix_aux = devm_clk_get(dev, "pix_aux");
231 if (IS_ERR(compo->clk_pix_aux)) {
232 DRM_ERROR("Cannot get pix_aux clock\n");
233 return PTR_ERR(compo->clk_pix_aux);
236 /* Get reset resources */
237 compo->rst_main = devm_reset_control_get(dev, "compo-main");
238 /* Take compo main out of reset */
239 if (!IS_ERR(compo->rst_main))
240 reset_control_deassert(compo->rst_main);
242 compo->rst_aux = devm_reset_control_get(dev, "compo-aux");
243 /* Take compo aux out of reset */
244 if (!IS_ERR(compo->rst_aux))
245 reset_control_deassert(compo->rst_aux);
247 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 0);
249 compo->vtg_main = of_vtg_find(vtg_np);
251 vtg_np = of_parse_phandle(pdev->dev.of_node, "st,vtg", 1);
253 compo->vtg_aux = of_vtg_find(vtg_np);
255 platform_set_drvdata(pdev, compo);
257 return component_add(&pdev->dev, &sti_compositor_ops);
260 static int sti_compositor_remove(struct platform_device *pdev)
262 component_del(&pdev->dev, &sti_compositor_ops);
266 struct platform_driver sti_compositor_driver = {
268 .name = "sti-compositor",
269 .of_match_table = compositor_of_match,
271 .probe = sti_compositor_probe,
272 .remove = sti_compositor_remove,
275 MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
276 MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
277 MODULE_LICENSE("GPL");