2 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
24 static const char *iommu_ports[] = {
28 static int mdp5_hw_init(struct msm_kms *kms)
30 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
31 struct drm_device *dev = mdp5_kms->dev;
34 pm_runtime_get_sync(dev->dev);
36 /* Magic unknown register writes:
38 * W VBIF:0x004 00000001 (mdss_mdp.c:839)
39 * W MDP5:0x2e0 0xe9 (mdss_mdp.c:839)
40 * W MDP5:0x2e4 0x55 (mdss_mdp.c:839)
41 * W MDP5:0x3ac 0xc0000ccc (mdss_mdp.c:839)
42 * W MDP5:0x3b4 0xc0000ccc (mdss_mdp.c:839)
43 * W MDP5:0x3bc 0xcccccc (mdss_mdp.c:839)
44 * W MDP5:0x4a8 0xcccc0c0 (mdss_mdp.c:839)
45 * W MDP5:0x4b0 0xccccc0c0 (mdss_mdp.c:839)
46 * W MDP5:0x4b8 0xccccc000 (mdss_mdp.c:839)
48 * Downstream fbdev driver gets these register offsets/values
49 * from DT.. not really sure what these registers are or if
50 * different values for different boards/SoC's, etc. I guess
51 * they are the golden registers.
53 * Not setting these does not seem to cause any problem. But
54 * we may be getting lucky with the bootloader initializing
55 * them for us. OTOH, if we can always count on the bootloader
56 * setting the golden registers, then perhaps we don't need to
60 spin_lock_irqsave(&mdp5_kms->resource_lock, flags);
61 mdp5_write(mdp5_kms, REG_MDP5_MDP_DISP_INTF_SEL(0), 0);
62 spin_unlock_irqrestore(&mdp5_kms->resource_lock, flags);
64 mdp5_ctlm_hw_reset(mdp5_kms->ctlm);
66 pm_runtime_put_sync(dev->dev);
71 static void mdp5_prepare_commit(struct msm_kms *kms, struct drm_atomic_state *state)
73 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
74 mdp5_enable(mdp5_kms);
77 static void mdp5_complete_commit(struct msm_kms *kms, struct drm_atomic_state *state)
79 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
80 mdp5_disable(mdp5_kms);
83 static void mdp5_wait_for_crtc_commit_done(struct msm_kms *kms,
84 struct drm_crtc *crtc)
86 mdp5_crtc_wait_for_commit_done(crtc);
89 static long mdp5_round_pixclk(struct msm_kms *kms, unsigned long rate,
90 struct drm_encoder *encoder)
95 static int mdp5_set_split_display(struct msm_kms *kms,
96 struct drm_encoder *encoder,
97 struct drm_encoder *slave_encoder,
101 return mdp5_cmd_encoder_set_split_display(encoder,
104 return mdp5_encoder_set_split_display(encoder, slave_encoder);
107 static void mdp5_preclose(struct msm_kms *kms, struct drm_file *file)
109 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
110 struct msm_drm_private *priv = mdp5_kms->dev->dev_private;
113 for (i = 0; i < priv->num_crtcs; i++)
114 mdp5_crtc_cancel_pending_flip(priv->crtcs[i], file);
117 static void mdp5_destroy(struct msm_kms *kms)
119 struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));
120 struct msm_mmu *mmu = mdp5_kms->mmu;
122 mdp5_irq_domain_fini(mdp5_kms);
125 mmu->funcs->detach(mmu, iommu_ports, ARRAY_SIZE(iommu_ports));
126 mmu->funcs->destroy(mmu);
130 mdp5_ctlm_destroy(mdp5_kms->ctlm);
132 mdp5_smp_destroy(mdp5_kms->smp);
134 mdp5_cfg_destroy(mdp5_kms->cfg);
139 static const struct mdp_kms_funcs kms_funcs = {
141 .hw_init = mdp5_hw_init,
142 .irq_preinstall = mdp5_irq_preinstall,
143 .irq_postinstall = mdp5_irq_postinstall,
144 .irq_uninstall = mdp5_irq_uninstall,
146 .enable_vblank = mdp5_enable_vblank,
147 .disable_vblank = mdp5_disable_vblank,
148 .prepare_commit = mdp5_prepare_commit,
149 .complete_commit = mdp5_complete_commit,
150 .wait_for_crtc_commit_done = mdp5_wait_for_crtc_commit_done,
151 .get_format = mdp_get_format,
152 .round_pixclk = mdp5_round_pixclk,
153 .set_split_display = mdp5_set_split_display,
154 .preclose = mdp5_preclose,
155 .destroy = mdp5_destroy,
157 .set_irqmask = mdp5_set_irqmask,
160 int mdp5_disable(struct mdp5_kms *mdp5_kms)
164 clk_disable_unprepare(mdp5_kms->ahb_clk);
165 clk_disable_unprepare(mdp5_kms->axi_clk);
166 clk_disable_unprepare(mdp5_kms->core_clk);
167 clk_disable_unprepare(mdp5_kms->lut_clk);
172 int mdp5_enable(struct mdp5_kms *mdp5_kms)
176 clk_prepare_enable(mdp5_kms->ahb_clk);
177 clk_prepare_enable(mdp5_kms->axi_clk);
178 clk_prepare_enable(mdp5_kms->core_clk);
179 clk_prepare_enable(mdp5_kms->lut_clk);
184 static struct drm_encoder *construct_encoder(struct mdp5_kms *mdp5_kms,
185 enum mdp5_intf_type intf_type, int intf_num,
186 enum mdp5_intf_mode intf_mode)
188 struct drm_device *dev = mdp5_kms->dev;
189 struct msm_drm_private *priv = dev->dev_private;
190 struct drm_encoder *encoder;
191 struct mdp5_interface intf = {
197 if ((intf_type == INTF_DSI) &&
198 (intf_mode == MDP5_INTF_DSI_MODE_COMMAND))
199 encoder = mdp5_cmd_encoder_init(dev, &intf);
201 encoder = mdp5_encoder_init(dev, &intf);
203 if (IS_ERR(encoder)) {
204 dev_err(dev->dev, "failed to construct encoder\n");
208 encoder->possible_crtcs = (1 << priv->num_crtcs) - 1;
209 priv->encoders[priv->num_encoders++] = encoder;
214 static int get_dsi_id_from_intf(const struct mdp5_cfg_hw *hw_cfg, int intf_num)
216 const enum mdp5_intf_type *intfs = hw_cfg->intf.connect;
217 const int intf_cnt = ARRAY_SIZE(hw_cfg->intf.connect);
220 for (i = 0; i < intf_cnt; i++) {
221 if (intfs[i] == INTF_DSI) {
232 static int modeset_init_intf(struct mdp5_kms *mdp5_kms, int intf_num)
234 struct drm_device *dev = mdp5_kms->dev;
235 struct msm_drm_private *priv = dev->dev_private;
236 const struct mdp5_cfg_hw *hw_cfg =
237 mdp5_cfg_get_hw_config(mdp5_kms->cfg);
238 enum mdp5_intf_type intf_type = hw_cfg->intf.connect[intf_num];
239 struct drm_encoder *encoder;
249 encoder = construct_encoder(mdp5_kms, INTF_eDP, intf_num,
250 MDP5_INTF_MODE_NONE);
251 if (IS_ERR(encoder)) {
252 ret = PTR_ERR(encoder);
256 ret = msm_edp_modeset_init(priv->edp, dev, encoder);
262 encoder = construct_encoder(mdp5_kms, INTF_HDMI, intf_num,
263 MDP5_INTF_MODE_NONE);
264 if (IS_ERR(encoder)) {
265 ret = PTR_ERR(encoder);
269 ret = hdmi_modeset_init(priv->hdmi, dev, encoder);
273 int dsi_id = get_dsi_id_from_intf(hw_cfg, intf_num);
274 struct drm_encoder *dsi_encs[MSM_DSI_ENCODER_NUM];
275 enum mdp5_intf_mode mode;
278 if ((dsi_id >= ARRAY_SIZE(priv->dsi)) || (dsi_id < 0)) {
279 dev_err(dev->dev, "failed to find dsi from intf %d\n",
285 if (!priv->dsi[dsi_id])
288 for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) {
289 mode = (i == MSM_DSI_CMD_ENCODER_ID) ?
290 MDP5_INTF_DSI_MODE_COMMAND :
291 MDP5_INTF_DSI_MODE_VIDEO;
292 dsi_encs[i] = construct_encoder(mdp5_kms, INTF_DSI,
294 if (IS_ERR(dsi_encs)) {
295 ret = PTR_ERR(dsi_encs);
300 ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, dsi_encs);
304 dev_err(dev->dev, "unknown intf: %d\n", intf_type);
312 static int modeset_init(struct mdp5_kms *mdp5_kms)
314 static const enum mdp5_pipe crtcs[] = {
315 SSPP_RGB0, SSPP_RGB1, SSPP_RGB2, SSPP_RGB3,
317 static const enum mdp5_pipe pub_planes[] = {
318 SSPP_VIG0, SSPP_VIG1, SSPP_VIG2, SSPP_VIG3,
320 struct drm_device *dev = mdp5_kms->dev;
321 struct msm_drm_private *priv = dev->dev_private;
322 const struct mdp5_cfg_hw *hw_cfg;
325 hw_cfg = mdp5_cfg_get_hw_config(mdp5_kms->cfg);
327 /* register our interrupt-controller for hdmi/eDP/dsi/etc
328 * to use for irqs routed through mdp:
330 ret = mdp5_irq_domain_init(mdp5_kms);
334 /* construct CRTCs and their private planes: */
335 for (i = 0; i < hw_cfg->pipe_rgb.count; i++) {
336 struct drm_plane *plane;
337 struct drm_crtc *crtc;
339 plane = mdp5_plane_init(dev, crtcs[i], true,
340 hw_cfg->pipe_rgb.base[i]);
342 ret = PTR_ERR(plane);
343 dev_err(dev->dev, "failed to construct plane for %s (%d)\n",
344 pipe2name(crtcs[i]), ret);
348 crtc = mdp5_crtc_init(dev, plane, i);
351 dev_err(dev->dev, "failed to construct crtc for %s (%d)\n",
352 pipe2name(crtcs[i]), ret);
355 priv->crtcs[priv->num_crtcs++] = crtc;
358 /* Construct public planes: */
359 for (i = 0; i < hw_cfg->pipe_vig.count; i++) {
360 struct drm_plane *plane;
362 plane = mdp5_plane_init(dev, pub_planes[i], false,
363 hw_cfg->pipe_vig.base[i]);
365 ret = PTR_ERR(plane);
366 dev_err(dev->dev, "failed to construct %s plane: %d\n",
367 pipe2name(pub_planes[i]), ret);
372 /* Construct encoders and modeset initialize connector devices
373 * for each external display interface.
375 for (i = 0; i < ARRAY_SIZE(hw_cfg->intf.connect); i++) {
376 ret = modeset_init_intf(mdp5_kms, i);
387 static void read_hw_revision(struct mdp5_kms *mdp5_kms,
388 uint32_t *major, uint32_t *minor)
392 mdp5_enable(mdp5_kms);
393 version = mdp5_read(mdp5_kms, REG_MDSS_HW_VERSION);
394 mdp5_disable(mdp5_kms);
396 *major = FIELD(version, MDSS_HW_VERSION_MAJOR);
397 *minor = FIELD(version, MDSS_HW_VERSION_MINOR);
399 DBG("MDP5 version v%d.%d", *major, *minor);
402 static int get_clk(struct platform_device *pdev, struct clk **clkp,
405 struct device *dev = &pdev->dev;
406 struct clk *clk = devm_clk_get(dev, name);
408 dev_err(dev, "failed to get %s (%ld)\n", name, PTR_ERR(clk));
415 struct msm_kms *mdp5_kms_init(struct drm_device *dev)
417 struct platform_device *pdev = dev->platformdev;
418 struct mdp5_cfg *config;
419 struct mdp5_kms *mdp5_kms;
420 struct msm_kms *kms = NULL;
422 uint32_t major, minor;
425 mdp5_kms = kzalloc(sizeof(*mdp5_kms), GFP_KERNEL);
427 dev_err(dev->dev, "failed to allocate kms\n");
432 spin_lock_init(&mdp5_kms->resource_lock);
434 mdp_kms_init(&mdp5_kms->base, &kms_funcs);
436 kms = &mdp5_kms->base.base;
440 /* mdp5_kms->mmio actually represents the MDSS base address */
441 mdp5_kms->mmio = msm_ioremap(pdev, "mdp_phys", "MDP5");
442 if (IS_ERR(mdp5_kms->mmio)) {
443 ret = PTR_ERR(mdp5_kms->mmio);
447 mdp5_kms->vbif = msm_ioremap(pdev, "vbif_phys", "VBIF");
448 if (IS_ERR(mdp5_kms->vbif)) {
449 ret = PTR_ERR(mdp5_kms->vbif);
453 mdp5_kms->vdd = devm_regulator_get(&pdev->dev, "vdd");
454 if (IS_ERR(mdp5_kms->vdd)) {
455 ret = PTR_ERR(mdp5_kms->vdd);
459 ret = regulator_enable(mdp5_kms->vdd);
461 dev_err(dev->dev, "failed to enable regulator vdd: %d\n", ret);
465 ret = get_clk(pdev, &mdp5_kms->axi_clk, "bus_clk");
468 ret = get_clk(pdev, &mdp5_kms->ahb_clk, "iface_clk");
471 ret = get_clk(pdev, &mdp5_kms->src_clk, "core_clk_src");
474 ret = get_clk(pdev, &mdp5_kms->core_clk, "core_clk");
477 ret = get_clk(pdev, &mdp5_kms->lut_clk, "lut_clk");
480 ret = get_clk(pdev, &mdp5_kms->vsync_clk, "vsync_clk");
484 /* we need to set a default rate before enabling. Set a safe
485 * rate first, then figure out hw revision, and then set a
488 clk_set_rate(mdp5_kms->src_clk, 200000000);
490 read_hw_revision(mdp5_kms, &major, &minor);
492 mdp5_kms->cfg = mdp5_cfg_init(mdp5_kms, major, minor);
493 if (IS_ERR(mdp5_kms->cfg)) {
494 ret = PTR_ERR(mdp5_kms->cfg);
495 mdp5_kms->cfg = NULL;
499 config = mdp5_cfg_get_config(mdp5_kms->cfg);
501 /* TODO: compute core clock rate at runtime */
502 clk_set_rate(mdp5_kms->src_clk, config->hw->max_clk);
504 mdp5_kms->smp = mdp5_smp_init(mdp5_kms->dev, &config->hw->smp);
505 if (IS_ERR(mdp5_kms->smp)) {
506 ret = PTR_ERR(mdp5_kms->smp);
507 mdp5_kms->smp = NULL;
511 mdp5_kms->ctlm = mdp5_ctlm_init(dev, mdp5_kms->mmio, config->hw);
512 if (IS_ERR(mdp5_kms->ctlm)) {
513 ret = PTR_ERR(mdp5_kms->ctlm);
514 mdp5_kms->ctlm = NULL;
518 /* make sure things are off before attaching iommu (bootloader could
519 * have left things on, in which case we'll start getting faults if
522 mdp5_enable(mdp5_kms);
523 for (i = 0; i < MDP5_INTF_NUM_MAX; i++) {
524 if (mdp5_cfg_intf_is_virtual(config->hw->intf.connect[i]) ||
525 !config->hw->intf.base[i])
527 mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0);
529 mdp5_disable(mdp5_kms);
532 if (config->platform.iommu) {
533 mmu = msm_iommu_new(&pdev->dev, config->platform.iommu);
536 dev_err(dev->dev, "failed to init iommu: %d\n", ret);
540 ret = mmu->funcs->attach(mmu, iommu_ports,
541 ARRAY_SIZE(iommu_ports));
543 dev_err(dev->dev, "failed to attach iommu: %d\n", ret);
544 mmu->funcs->destroy(mmu);
548 dev_info(dev->dev, "no iommu, fallback to phys "
549 "contig buffers for scanout\n");
554 mdp5_kms->id = msm_register_mmu(dev, mmu);
555 if (mdp5_kms->id < 0) {
557 dev_err(dev->dev, "failed to register mdp5 iommu: %d\n", ret);
561 ret = modeset_init(mdp5_kms);
563 dev_err(dev->dev, "modeset_init failed: %d\n", ret);