diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c index 2a5a68366..16f144cbc 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c @@ -4,6 +4,7 @@ */ #include <drm/drm_edid.h> +#include <drm/drm_framebuffer.h> #include "dpu_writeback.h" @@ -24,6 +25,61 @@ static int dpu_wb_conn_get_modes(struct drm_connector *connector) dev->mode_config.max_height); } +static int dpu_wb_conn_atomic_check(struct drm_connector *connector, + struct drm_atomic_state *state) +{ + struct drm_writeback_connector *wb_conn = drm_connector_to_writeback(connector); + struct dpu_wb_connector *dpu_wb_conn = to_dpu_wb_conn(wb_conn); + struct drm_connector_state *conn_state = + drm_atomic_get_new_connector_state(state, connector); + struct drm_crtc *crtc; + struct drm_crtc_state *crtc_state; + const struct drm_display_mode *mode; + struct drm_framebuffer *fb; + + DPU_DEBUG("[atomic_check:%d]\n", connector->base.id); + + if (!conn_state || !conn_state->connector) { + DPU_ERROR("invalid connector state\n"); + return -EINVAL; + } else if (conn_state->connector->status != connector_status_connected) { + DPU_ERROR("connector not connected %d\n", conn_state->connector->status); + return -EINVAL; + } + + crtc = conn_state->crtc; + if (!crtc) + return 0; + + if (!conn_state->writeback_job || !conn_state->writeback_job->fb) + return 0; + + crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + mode = &crtc_state->mode; + + fb = conn_state->writeback_job->fb; + + DPU_DEBUG("[fb_id:%u][fb:%u,%u][mode:\"%s\":%ux%u]\n", fb->base.id, fb->width, fb->height, + mode->name, mode->hdisplay, mode->vdisplay); + + if (fb->width != mode->hdisplay) { + DPU_ERROR("invalid fb w=%d, mode w=%d\n", fb->width, mode->hdisplay); + return -EINVAL; + } else if (fb->height != mode->vdisplay) { + DPU_ERROR("invalid fb h=%d, mode h=%d\n", fb->height, mode->vdisplay); + return -EINVAL; + } else if (fb->width > dpu_wb_conn->maxlinewidth) { + DPU_ERROR("invalid fb w=%d, maxlinewidth=%u\n", + fb->width, dpu_wb_conn->maxlinewidth); + return -EINVAL; + } + + return drm_atomic_helper_check_wb_connector_state(conn_state->connector, conn_state->state); +} + static const struct drm_connector_funcs dpu_wb_conn_funcs = { .reset = drm_atomic_helper_connector_reset, .fill_modes = drm_helper_probe_single_connector_modes, @@ -59,12 +115,13 @@ static void dpu_wb_conn_cleanup_job(struct drm_writeback_connector *connector, static const struct drm_connector_helper_funcs dpu_wb_conn_helper_funcs = { .get_modes = dpu_wb_conn_get_modes, + .atomic_check = dpu_wb_conn_atomic_check, .prepare_writeback_job = dpu_wb_conn_prepare_job, .cleanup_writeback_job = dpu_wb_conn_cleanup_job, }; int dpu_writeback_init(struct drm_device *dev, struct drm_encoder *enc, - const u32 *format_list, u32 num_formats) + const u32 *format_list, u32 num_formats, u32 maxlinewidth) { struct dpu_wb_connector *dpu_wb_conn; int rc = 0; @@ -73,6 +130,8 @@ int dpu_writeback_init(struct drm_device *dev, struct drm_encoder *enc, if (!dpu_wb_conn) return -ENOMEM; + dpu_wb_conn->maxlinewidth = maxlinewidth; + drm_connector_helper_add(&dpu_wb_conn->base.base, &dpu_wb_conn_helper_funcs); /* DPU initializes the encoder and sets it up completely for writeback |