diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dsi/dsi_host.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_host.c | 66 |
1 files changed, 51 insertions, 15 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 5d9ec27c89d3..deeecdfd6c4e 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -147,6 +147,7 @@ struct msm_dsi_host { /* DSI 6G TX buffer*/ struct drm_gem_object *tx_gem_obj; + struct msm_gem_address_space *aspace; /* DSI v2 TX buffer */ void *tx_buf; @@ -710,6 +711,15 @@ static void dsi_ctrl_disable(struct msm_dsi_host *msm_host) dsi_write(msm_host, REG_DSI_CTRL, 0); } +bool msm_dsi_host_is_wide_bus_enabled(struct mipi_dsi_host *host) +{ + struct msm_dsi_host *msm_host = to_msm_dsi_host(host); + + return msm_host->dsc && + (msm_host->cfg_hnd->major == MSM_DSI_VER_MAJOR_6G && + msm_host->cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V2_5_0); +} + static void dsi_ctrl_enable(struct msm_dsi_host *msm_host, struct msm_dsi_phy_shared_timings *phy_shared_timings, struct msm_dsi_phy *phy) { @@ -753,10 +763,16 @@ static void dsi_ctrl_enable(struct msm_dsi_host *msm_host, data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND; dsi_write(msm_host, REG_DSI_CMD_CFG1, data); - if (msm_host->cfg_hnd->major == MSM_DSI_VER_MAJOR_6G && - msm_host->cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_3) { + if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) { data = dsi_read(msm_host, REG_DSI_CMD_MODE_MDP_CTRL2); - data |= DSI_CMD_MODE_MDP_CTRL2_BURST_MODE; + + if (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_3) + data |= DSI_CMD_MODE_MDP_CTRL2_BURST_MODE; + + /* TODO: Allow for video-mode support once tested/fixed */ + if (msm_dsi_host_is_wide_bus_enabled(&msm_host->base)) + data |= DSI_CMD_MODE_MDP_CTRL2_DATABUS_WIDEN; + dsi_write(msm_host, REG_DSI_CMD_MODE_MDP_CTRL2, data); } } @@ -894,6 +910,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) u32 hdisplay = mode->hdisplay; u32 wc; int ret; + bool wide_bus_enabled = msm_dsi_host_is_wide_bus_enabled(&msm_host->base); DBG(""); @@ -914,6 +931,7 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) if (msm_host->dsc) { struct drm_dsc_config *dsc = msm_host->dsc; + u32 bytes_per_pclk; /* update dsc params with timing params */ if (!dsc || !mode->hdisplay || !mode->vdisplay) { @@ -937,7 +955,13 @@ static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi) * pulse width same */ h_total -= hdisplay; - hdisplay = DIV_ROUND_UP(msm_dsc_get_bytes_per_line(msm_host->dsc), 3); + if (wide_bus_enabled && !(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO)) + bytes_per_pclk = 6; + else + bytes_per_pclk = 3; + + hdisplay = DIV_ROUND_UP(msm_dsc_get_bytes_per_line(msm_host->dsc), bytes_per_pclk); + h_total += hdisplay; ha_end = ha_start + hdisplay; } @@ -1082,9 +1106,21 @@ static void dsi_wait4video_done(struct msm_dsi_host *msm_host) static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host) { + u32 data; + if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO)) return; + data = dsi_read(msm_host, REG_DSI_STATUS0); + + /* if video mode engine is not busy, its because + * either timing engine was not turned on or the + * DSI controller has finished transmitting the video + * data already, so no need to wait in those cases + */ + if (!(data & DSI_STATUS0_VIDEO_MODE_ENGINE_BUSY)) + return; + if (msm_host->power_on && msm_host->enabled) { dsi_wait4video_done(msm_host); /* delay 4 ms to skip BLLP */ @@ -1099,8 +1135,10 @@ int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size) uint64_t iova; u8 *data; + msm_host->aspace = msm_gem_address_space_get(priv->kms->aspace); + data = msm_gem_kernel_new(dev, size, MSM_BO_WC, - priv->kms->aspace, + msm_host->aspace, &msm_host->tx_gem_obj, &iova); if (IS_ERR(data)) { @@ -1129,10 +1167,10 @@ int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size) return 0; } -static void dsi_tx_buf_free(struct msm_dsi_host *msm_host) +void msm_dsi_tx_buf_free(struct mipi_dsi_host *host) { + struct msm_dsi_host *msm_host = to_msm_dsi_host(host); struct drm_device *dev = msm_host->dev; - struct msm_drm_private *priv; /* * This is possible if we're tearing down before we've had a chance to @@ -1143,11 +1181,11 @@ static void dsi_tx_buf_free(struct msm_dsi_host *msm_host) if (!dev) return; - priv = dev->dev_private; if (msm_host->tx_gem_obj) { - msm_gem_unpin_iova(msm_host->tx_gem_obj, priv->kms->aspace); - drm_gem_object_put(msm_host->tx_gem_obj); + msm_gem_kernel_put(msm_host->tx_gem_obj, msm_host->aspace); + msm_gem_address_space_put(msm_host->aspace); msm_host->tx_gem_obj = NULL; + msm_host->aspace = NULL; } if (msm_host->tx_buf) @@ -1894,10 +1932,9 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi) } msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (msm_host->irq < 0) { - ret = msm_host->irq; - dev_err(&pdev->dev, "failed to get irq: %d\n", ret); - return ret; + if (!msm_host->irq) { + dev_err(&pdev->dev, "failed to get irq\n"); + return -EINVAL; } /* do not autoenable, will be enabled later */ @@ -1934,7 +1971,6 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host) struct msm_dsi_host *msm_host = to_msm_dsi_host(host); DBG(""); - dsi_tx_buf_free(msm_host); if (msm_host->workqueue) { destroy_workqueue(msm_host->workqueue); msm_host->workqueue = NULL; |