/* * Copyright (C) 2013 Red Hat * Author: Rob Clark * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see . */ #include "mdp5_kms.h" #include "drm_crtc.h" #include "drm_crtc_helper.h" struct mdp5_encoder { struct drm_encoder base; int intf; enum mdp5_intf intf_id; spinlock_t intf_lock; /* protect REG_MDP5_INTF_* registers */ bool enabled; uint32_t bsc; }; #define to_mdp5_encoder(x) container_of(x, struct mdp5_encoder, base) static struct mdp5_kms *get_kms(struct drm_encoder *encoder) { struct msm_drm_private *priv = encoder->dev->dev_private; return to_mdp5_kms(to_mdp_kms(priv->kms)); } #ifdef CONFIG_MSM_BUS_SCALING #include #include #include #define MDP_BUS_VECTOR_ENTRY(ab_val, ib_val) \ { \ .src = MSM_BUS_MASTER_MDP_PORT0, \ .dst = MSM_BUS_SLAVE_EBI_CH0, \ .ab = (ab_val), \ .ib = (ib_val), \ } static struct msm_bus_vectors mdp_bus_vectors[] = { MDP_BUS_VECTOR_ENTRY(0, 0), MDP_BUS_VECTOR_ENTRY(2000000000, 2000000000), }; static struct msm_bus_paths mdp_bus_usecases[] = { { .num_paths = 1, .vectors = &mdp_bus_vectors[0], }, { .num_paths = 1, .vectors = &mdp_bus_vectors[1], } }; static struct msm_bus_scale_pdata mdp_bus_scale_table = { .usecase = mdp_bus_usecases, .num_usecases = ARRAY_SIZE(mdp_bus_usecases), .name = "mdss_mdp", }; static void bs_init(struct mdp5_encoder *mdp5_encoder) { mdp5_encoder->bsc = msm_bus_scale_register_client( &mdp_bus_scale_table); DBG("bus scale client: %08x", mdp5_encoder->bsc); } static void bs_fini(struct mdp5_encoder *mdp5_encoder) { if (mdp5_encoder->bsc) { msm_bus_scale_unregister_client(mdp5_encoder->bsc); mdp5_encoder->bsc = 0; } } static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) { if (mdp5_encoder->bsc) { DBG("set bus scaling: %d", idx); /* HACK: scaling down, and then immediately back up * seems to leave things broken (underflow).. so * never disable: */ idx = 1; msm_bus_scale_client_update_request(mdp5_encoder->bsc, idx); } } #else static void bs_init(struct mdp5_encoder *mdp5_encoder) {} static void bs_fini(struct mdp5_encoder *mdp5_encoder) {} static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) {} #endif static void mdp5_encoder_destroy(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); bs_fini(mdp5_encoder); drm_encoder_cleanup(encoder); kfree(mdp5_encoder); } static const struct drm_encoder_funcs mdp5_encoder_funcs = { .destroy = mdp5_encoder_destroy, }; static void mdp5_encoder_dpms(struct drm_encoder *encoder, int mode) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); int intf = mdp5_encoder->intf; bool enabled = (mode == DRM_MODE_DPMS_ON); unsigned long flags; DBG("mode=%d", mode); if (enabled == mdp5_encoder->enabled) return; if (enabled) { bs_set(mdp5_encoder, 1); spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intf), 1); spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); } else { spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intf), 0); spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); /* * Wait for a vsync so we know the ENABLE=0 latched before * the (connector) source of the vsync's gets disabled, * otherwise we end up in a funny state if we re-enable * before the disable latches, which results that some of * the settings changes for the new modeset (like new * scanout buffer) don't latch properly.. */ mdp_irq_wait(&mdp5_kms->base, intf2vblank(intf)); bs_set(mdp5_encoder, 0); } mdp5_encoder->enabled = enabled; } static bool mdp5_encoder_mode_fixup(struct drm_encoder *encoder, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { return true; } static void mdp5_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); int intf = mdp5_encoder->intf; uint32_t dtv_hsync_skew, vsync_period, vsync_len, ctrl_pol; uint32_t display_v_start, display_v_end; uint32_t hsync_start_x, hsync_end_x; uint32_t format; unsigned long flags; mode = adjusted_mode; DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", mode->base.id, mode->name, mode->vrefresh, mode->clock, mode->hdisplay, mode->hsync_start, mode->hsync_end, mode->htotal, mode->vdisplay, mode->vsync_start, mode->vsync_end, mode->vtotal, mode->type, mode->flags); ctrl_pol = 0; if (mode->flags & DRM_MODE_FLAG_NHSYNC) ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW; if (mode->flags & DRM_MODE_FLAG_NVSYNC) ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW; /* probably need to get DATA_EN polarity from panel.. */ dtv_hsync_skew = 0; /* get this from panel? */ format = 0x213f; /* get this from panel? */ hsync_start_x = (mode->htotal - mode->hsync_start); hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1; vsync_period = mode->vtotal * mode->htotal; vsync_len = (mode->vsync_end - mode->vsync_start) * mode->htotal; display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + dtv_hsync_skew; display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + dtv_hsync_skew - 1; spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_CTL(intf), MDP5_INTF_HSYNC_CTL_PULSEW(mode->hsync_end - mode->hsync_start) | MDP5_INTF_HSYNC_CTL_PERIOD(mode->htotal)); mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_PERIOD_F0(intf), vsync_period); mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_LEN_F0(intf), vsync_len); mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_HCTL(intf), MDP5_INTF_DISPLAY_HCTL_START(hsync_start_x) | MDP5_INTF_DISPLAY_HCTL_END(hsync_end_x)); mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VSTART_F0(intf), display_v_start); mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VEND_F0(intf), display_v_end); mdp5_write(mdp5_kms, REG_MDP5_INTF_BORDER_COLOR(intf), 0); mdp5_write(mdp5_kms, REG_MDP5_INTF_UNDERFLOW_COLOR(intf), 0xff); mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_SKEW(intf), dtv_hsync_skew); mdp5_write(mdp5_kms, REG_MDP5_INTF_POLARITY_CTL(intf), ctrl_pol); mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_HCTL(intf), MDP5_INTF_ACTIVE_HCTL_START(0) | MDP5_INTF_ACTIVE_HCTL_END(0)); mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VSTART_F0(intf), 0); mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VEND_F0(intf), 0); mdp5_write(mdp5_kms, REG_MDP5_INTF_PANEL_FORMAT(intf), format); mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(intf), 0x3); /* frame+line? */ spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); } static void mdp5_encoder_prepare(struct drm_encoder *encoder) { mdp5_encoder_dpms(encoder, DRM_MODE_DPMS_OFF); } static void mdp5_encoder_commit(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); mdp5_crtc_set_intf(encoder->crtc, mdp5_encoder->intf, mdp5_encoder->intf_id); mdp5_encoder_dpms(encoder, DRM_MODE_DPMS_ON); } static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = { .dpms = mdp5_encoder_dpms, .mode_fixup = mdp5_encoder_mode_fixup, .mode_set = mdp5_encoder_mode_set, .prepare = mdp5_encoder_prepare, .commit = mdp5_encoder_commit, }; /* initialize encoder */ struct drm_encoder *mdp5_encoder_init(struct drm_device *dev, int intf, enum mdp5_intf intf_id) { struct drm_encoder *encoder = NULL; struct mdp5_encoder *mdp5_encoder; int ret; mdp5_encoder = kzalloc(sizeof(*mdp5_encoder), GFP_KERNEL); if (!mdp5_encoder) { ret = -ENOMEM; goto fail; } mdp5_encoder->intf = intf; mdp5_encoder->intf_id = intf_id; encoder = &mdp5_encoder->base; spin_lock_init(&mdp5_encoder->intf_lock); drm_encoder_init(dev, encoder, &mdp5_encoder_funcs, DRM_MODE_ENCODER_TMDS); drm_encoder_helper_add(encoder, &mdp5_encoder_helper_funcs); bs_init(mdp5_encoder); return encoder; fail: if (encoder) mdp5_encoder_destroy(encoder); return ERR_PTR(ret); }