diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/mdp5/mdp5_encoder.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp5/mdp5_encoder.c | 446 |
1 files changed, 446 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_encoder.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_encoder.c new file mode 100644 index 000000000000..9af94e35f678 --- /dev/null +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_encoder.c @@ -0,0 +1,446 @@ +/* + * 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 <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> + +#include "mdp5_kms.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)); +} + +#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); +} + +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_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); +} + +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; + struct mdp5_pipeline *pipeline = mdp5_crtc_get_pipeline(encoder->crtc); + struct mdp5_hw_mixer *mixer = mdp5_crtc_get_mixer(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, pipeline, 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, pipeline, mdp_ctl_flush_mask_encoder(intf), true); + + /* + * 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(mixer, intf)); + + bs_set(mdp5_encoder, 0); + + mdp5_encoder->enabled = false; +} + +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; + struct mdp5_pipeline *pipeline = mdp5_crtc_get_pipeline(encoder->crtc); + int intfn = 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, pipeline, mdp_ctl_flush_mask_encoder(intf), true); + + mdp5_ctl_set_encoder_state(ctl, pipeline, true); + + mdp5_encoder->enabled = 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_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); +} + +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); +} + +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; + /* this isn't right I think */ + struct drm_crtc_state *cstate = encoder->crtc->state; + + mdp5_encoder_mode_set(encoder, &cstate->mode, &cstate->adjusted_mode); + + if (intf->mode == MDP5_INTF_DSI_MODE_COMMAND) + mdp5_cmd_encoder_enable(encoder); + else + mdp5_vid_encoder_enable(encoder); +} + +static int mdp5_encoder_atomic_check(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder); + struct mdp5_crtc_state *mdp5_cstate = to_mdp5_crtc_state(crtc_state); + struct mdp5_interface *intf = mdp5_encoder->intf; + struct mdp5_ctl *ctl = mdp5_encoder->ctl; + + mdp5_cstate->ctl = ctl; + mdp5_cstate->pipeline.intf = intf; + mdp5_cstate->defer_start = true; + + return 0; +} + +static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = { + .disable = mdp5_encoder_disable, + .enable = mdp5_encoder_enable, + .atomic_check = mdp5_encoder_atomic_check, +}; + +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)); +} + +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)); +} + +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; + struct device *dev; + 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; + + dev = &mdp5_kms->pdev->dev; + /* Make sure clocks are on when connectors calling this function. */ + pm_runtime_get_sync(dev); + + /* 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); + + pm_runtime_put_sync(dev); + + return 0; +} + +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; + } +} + +/* 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; + } + + encoder = &mdp5_encoder->base; + mdp5_encoder->ctl = ctl; + mdp5_encoder->intf = intf; + + 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); +} |