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Release 4.11 drivers/gpu/drm/msm/mdp/mdp5/mdp5_encoder.c

/*
 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * 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 <http://www.gnu.org/licenses/>.
 */

#include "mdp5_kms.h"

#include "drm_crtc.h"
#include "drm_crtc_helper.h"


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)); }

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#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING #include <mach/board.h> #include <mach/msm_bus.h> #include <mach/msm_bus_board.h> #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); }

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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; } }

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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); } }

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#else
static void bs_init(struct mdp5_encoder *mdp5_encoder) {}

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static void bs_fini(struct mdp5_encoder *mdp5_encoder) {}

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static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) {}

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#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); }

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static const struct drm_encoder_funcs mdp5_encoder_funcs = { .destroy = mdp5_encoder_destroy, };
static void mdp5_vid_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); struct drm_device *dev = encoder->dev; struct drm_connector *connector; int intf = mdp5_encoder->intf.num; 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 = 0x2100; 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; /* DSI controller cannot handle active-low sync signals. */ if (mdp5_encoder->intf.type != INTF_DSI) { 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? */ /* Get color format from panel, default is 8bpc */ list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (connector->encoder == encoder) { switch (connector->display_info.bpc) { case 4: format |= 0; break; case 5: format |= 0x15; break; case 6: format |= 0x2A; break; case 8: default: format |= 0x3F; break; } break; } } 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; /* * For edp only: * DISPLAY_V_START = (VBP * HCYCLE) + HBP * DISPLAY_V_END = (VBP + VACTIVE) * HCYCLE - 1 - HFP */ if (mdp5_encoder->intf.type == INTF_eDP) { display_v_start += mode->htotal - mode->hsync_start; display_v_end -= mode->hsync_start - mode->hdisplay; } 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); mdp5_crtc_set_pipeline(encoder->crtc, &mdp5_encoder->intf, mdp5_encoder->ctl); }

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static void mdp5_vid_encoder_disable(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); struct mdp5_ctl *ctl = mdp5_encoder->ctl; int lm = mdp5_crtc_get_lm(encoder->crtc); struct mdp5_interface *intf = &mdp5_encoder->intf; int intfn = mdp5_encoder->intf.num; unsigned long flags; if (WARN_ON(!mdp5_encoder->enabled)) return; mdp5_ctl_set_encoder_state(ctl, false); spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intfn), 0); spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf)); /* * 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(lm, intf)); bs_set(mdp5_encoder, 0); mdp5_encoder->enabled = false; }

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static void mdp5_vid_encoder_enable(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); struct mdp5_ctl *ctl = mdp5_encoder->ctl; struct mdp5_interface *intf = &mdp5_encoder->intf; int intfn = mdp5_encoder->intf.num; unsigned long flags; if (WARN_ON(mdp5_encoder->enabled)) return; bs_set(mdp5_encoder, 1); spin_lock_irqsave(&mdp5_encoder->intf_lock, flags); mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intfn), 1); spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags); mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf)); mdp5_ctl_set_encoder_state(ctl, true); mdp5_encoder->enabled = true; }

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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_interface *intf = &mdp5_encoder->intf; if (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) mdp5_cmd_encoder_mode_set(encoder, mode, adjusted_mode); else mdp5_vid_encoder_mode_set(encoder, mode, adjusted_mode); }

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static void mdp5_encoder_disable(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_interface *intf = &mdp5_encoder->intf; if (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) mdp5_cmd_encoder_disable(encoder); else mdp5_vid_encoder_disable(encoder); }

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static void mdp5_encoder_enable(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_interface *intf = &mdp5_encoder->intf; if (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) mdp5_cmd_encoder_disable(encoder); else mdp5_vid_encoder_enable(encoder); }

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static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = { .mode_set = mdp5_encoder_mode_set, .disable = mdp5_encoder_disable, .enable = mdp5_encoder_enable, };
int mdp5_encoder_get_linecount(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); int intf = mdp5_encoder->intf.num; return mdp5_read(mdp5_kms, REG_MDP5_INTF_LINE_COUNT(intf)); }

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u32 mdp5_encoder_get_framecount(struct drm_encoder *encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_kms *mdp5_kms = get_kms(encoder); int intf = mdp5_encoder->intf.num; return mdp5_read(mdp5_kms, REG_MDP5_INTF_FRAME_COUNT(intf)); }

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int mdp5_vid_encoder_set_split_display(struct drm_encoder *encoder, struct drm_encoder *slave_encoder) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_encoder *mdp5_slave_enc = to_mdp5_encoder(slave_encoder); struct mdp5_kms *mdp5_kms; int intf_num; u32 data = 0; if (!encoder || !slave_encoder) return -EINVAL; mdp5_kms = get_kms(encoder); intf_num = mdp5_encoder->intf.num; /* Switch slave encoder's TimingGen Sync mode, * to use the master's enable signal for the slave encoder. */ if (intf_num == 1) data |= MDP5_SPLIT_DPL_LOWER_INTF2_TG_SYNC; else if (intf_num == 2) data |= MDP5_SPLIT_DPL_LOWER_INTF1_TG_SYNC; else return -EINVAL; /* Make sure clocks are on when connectors calling this function. */ mdp5_enable(mdp5_kms); /* Dumb Panel, Sync mode */ mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_UPPER, 0); mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_LOWER, data); mdp5_write(mdp5_kms, REG_MDP5_SPLIT_DPL_EN, 1); mdp5_ctl_pair(mdp5_encoder->ctl, mdp5_slave_enc->ctl, true); mdp5_disable(mdp5_kms); return 0; }

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void mdp5_encoder_set_intf_mode(struct drm_encoder *encoder, bool cmd_mode) { struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); struct mdp5_interface *intf = &mdp5_encoder->intf; /* TODO: Expand this to set writeback modes too */ if (cmd_mode) { WARN_ON(intf->type != INTF_DSI); intf->mode = MDP5_INTF_DSI_MODE_COMMAND; } else { if (intf->type == INTF_DSI) intf->mode = MDP5_INTF_DSI_MODE_VIDEO; else intf->mode = MDP5_INTF_MODE_NONE; } }

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/* initialize encoder */
struct drm_encoder *mdp5_encoder_init(struct drm_device *dev, struct mdp5_interface *intf, struct mdp5_ctl *ctl) { struct drm_encoder *encoder = NULL; struct mdp5_encoder *mdp5_encoder; int enc_type = (intf->type == INTF_DSI) ? DRM_MODE_ENCODER_DSI : DRM_MODE_ENCODER_TMDS; int ret; mdp5_encoder = kzalloc(sizeof(*mdp5_encoder), GFP_KERNEL); if (!mdp5_encoder) { ret = -ENOMEM; goto fail; } memcpy(&mdp5_encoder->intf, intf, sizeof(mdp5_encoder->intf)); encoder = &mdp5_encoder->base; mdp5_encoder->ctl = ctl; spin_lock_init(&mdp5_encoder->intf_lock); drm_encoder_init(dev, encoder, &mdp5_encoder_funcs, enc_type, NULL); 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); }

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