summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/msm/mdp4/mdp4_crtc.c
diff options
context:
space:
mode:
authorRob Clark <robdclark@gmail.com>2013-10-08 12:57:48 -0400
committerRob Clark <robdclark@gmail.com>2013-11-01 12:39:44 -0400
commita862391871004bf8dea2299bb712aa93a512334a (patch)
tree89f8d1d779f133bd4d271378d4d7df1a0eceeeab /drivers/gpu/drm/msm/mdp4/mdp4_crtc.c
parent22ba8b6b230aa584171fb06c656157e752943ed0 (diff)
downloadlwn-a862391871004bf8dea2299bb712aa93a512334a.tar.gz
lwn-a862391871004bf8dea2299bb712aa93a512334a.zip
drm/msm: add plane support
Enable using VG1 and VG2 for planes. Currently YUV/CSC or scaling is not enabled, but ARGB and xRGB blending is. Signed-off-by: Rob Clark <robdclark@gmail.com> Acked-by: David Brown <davidb@codeaurora.org>
Diffstat (limited to 'drivers/gpu/drm/msm/mdp4/mdp4_crtc.c')
-rw-r--r--drivers/gpu/drm/msm/mdp4/mdp4_crtc.c136
1 files changed, 85 insertions, 51 deletions
diff --git a/drivers/gpu/drm/msm/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp4/mdp4_crtc.c
index de6bea297cda..5a68aab66fa2 100644
--- a/drivers/gpu/drm/msm/mdp4/mdp4_crtc.c
+++ b/drivers/gpu/drm/msm/mdp4/mdp4_crtc.c
@@ -26,6 +26,7 @@ struct mdp4_crtc {
struct drm_crtc base;
char name[8];
struct drm_plane *plane;
+ struct drm_plane *planes[8];
int id;
int ovlp;
enum mdp4_dma dma;
@@ -115,9 +116,15 @@ static void crtc_flush(struct drm_crtc *crtc)
{
struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
struct mdp4_kms *mdp4_kms = get_kms(crtc);
- uint32_t flush = 0;
+ uint32_t i, flush = 0;
- flush |= pipe2flush(mdp4_plane_pipe(mdp4_crtc->plane));
+ for (i = 0; i < ARRAY_SIZE(mdp4_crtc->planes); i++) {
+ struct drm_plane *plane = mdp4_crtc->planes[i];
+ if (plane) {
+ enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
+ flush |= pipe2flush(pipe_id);
+ }
+ }
flush |= ovlp2flush(mdp4_crtc->ovlp);
DBG("%s: flush=%08x", mdp4_crtc->name, flush);
@@ -205,67 +212,69 @@ static void blend_setup(struct drm_crtc *crtc)
struct mdp4_kms *mdp4_kms = get_kms(crtc);
int i, ovlp = mdp4_crtc->ovlp;
uint32_t mixer_cfg = 0;
-
- /*
- * This probably would also need to be triggered by any attached
- * plane when it changes.. for now since we are only using a single
- * private plane, the configuration is hard-coded:
- */
+ static const enum mdp4_mixer_stage_id stages[] = {
+ STAGE_BASE, STAGE0, STAGE1, STAGE2, STAGE3,
+ };
+ /* statically (for now) map planes to mixer stage (z-order): */
+ static const int idxs[] = {
+ [VG1] = 1,
+ [VG2] = 2,
+ [RGB1] = 0,
+ [RGB2] = 0,
+ [RGB3] = 0,
+ [VG3] = 3,
+ [VG4] = 4,
+
+ };
+ bool alpha[4]= { false, false, false, false };
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_LOW0(ovlp), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_LOW1(ovlp), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_HIGH0(ovlp), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_TRANSP_HIGH1(ovlp), 0);
+ /* TODO single register for all CRTCs, so this won't work properly
+ * when multiple CRTCs are active..
+ */
+ for (i = 0; i < ARRAY_SIZE(mdp4_crtc->planes); i++) {
+ struct drm_plane *plane = mdp4_crtc->planes[i];
+ if (plane) {
+ enum mdp4_pipe pipe_id = mdp4_plane_pipe(plane);
+ int idx = idxs[pipe_id];
+ if (idx > 0) {
+ const struct mdp4_format *format =
+ to_mdp4_format(msm_framebuffer_format(plane->fb));
+ alpha[idx-1] = format->alpha_enable;
+ }
+ mixer_cfg |= mixercfg(mdp4_crtc->mixer, pipe_id, stages[idx]);
+ }
+ }
+
+ /* this shouldn't happen.. and seems to cause underflow: */
+ WARN_ON(!mixer_cfg);
+
for (i = 0; i < 4; i++) {
- mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_FG_ALPHA(ovlp, i), 0);
- mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_BG_ALPHA(ovlp, i), 0);
- mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_OP(ovlp, i),
- MDP4_OVLP_STAGE_OP_FG_ALPHA(FG_CONST) |
- MDP4_OVLP_STAGE_OP_BG_ALPHA(BG_CONST));
- mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_CO3(ovlp, i), 0);
+ uint32_t op;
+
+ if (alpha[i]) {
+ op = MDP4_OVLP_STAGE_OP_FG_ALPHA(FG_PIXEL) |
+ MDP4_OVLP_STAGE_OP_BG_ALPHA(FG_PIXEL) |
+ MDP4_OVLP_STAGE_OP_BG_INV_ALPHA;
+ } else {
+ op = MDP4_OVLP_STAGE_OP_FG_ALPHA(FG_CONST) |
+ MDP4_OVLP_STAGE_OP_BG_ALPHA(BG_CONST);
+ }
+
+ mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_FG_ALPHA(ovlp, i), 0xff);
+ mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_BG_ALPHA(ovlp, i), 0x00);
+ mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_OP(ovlp, i), op);
+ mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_CO3(ovlp, i), 1);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_TRANSP_LOW0(ovlp, i), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_TRANSP_LOW1(ovlp, i), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_TRANSP_HIGH0(ovlp, i), 0);
mdp4_write(mdp4_kms, REG_MDP4_OVLP_STAGE_TRANSP_HIGH1(ovlp, i), 0);
}
- /* TODO single register for all CRTCs, so this won't work properly
- * when multiple CRTCs are active..
- */
- switch (mdp4_plane_pipe(mdp4_crtc->plane)) {
- case VG1:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE0(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE0_MIXER1);
- break;
- case VG2:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE1(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE1_MIXER1);
- break;
- case RGB1:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE2(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE2_MIXER1);
- break;
- case RGB2:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE3(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE3_MIXER1);
- break;
- case RGB3:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE4(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE4_MIXER1);
- break;
- case VG3:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE5(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE5_MIXER1);
- break;
- case VG4:
- mixer_cfg = MDP4_LAYERMIXER_IN_CFG_PIPE6(STAGE_BASE) |
- COND(mdp4_crtc->mixer == 1, MDP4_LAYERMIXER_IN_CFG_PIPE6_MIXER1);
- break;
- default:
- WARN_ON("invalid pipe");
- break;
- }
mdp4_write(mdp4_kms, REG_MDP4_LAYERMIXER_IN_CFG, mixer_cfg);
}
@@ -622,6 +631,32 @@ void mdp4_crtc_set_intf(struct drm_crtc *crtc, enum mdp4_intf intf)
mdp4_write(mdp4_kms, REG_MDP4_DISP_INTF_SEL, intf_sel);
}
+static void set_attach(struct drm_crtc *crtc, enum mdp4_pipe pipe_id,
+ struct drm_plane *plane)
+{
+ struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
+
+ BUG_ON(pipe_id >= ARRAY_SIZE(mdp4_crtc->planes));
+
+ if (mdp4_crtc->planes[pipe_id] == plane)
+ return;
+
+ mdp4_crtc->planes[pipe_id] = plane;
+ blend_setup(crtc);
+ if (mdp4_crtc->enabled && (plane != mdp4_crtc->plane))
+ crtc_flush(crtc);
+}
+
+void mdp4_crtc_attach(struct drm_crtc *crtc, struct drm_plane *plane)
+{
+ set_attach(crtc, mdp4_plane_pipe(plane), plane);
+}
+
+void mdp4_crtc_detach(struct drm_crtc *crtc, struct drm_plane *plane)
+{
+ set_attach(crtc, mdp4_plane_pipe(plane), NULL);
+}
+
static const char *dma_names[] = {
"DMA_P", "DMA_S", "DMA_E",
};
@@ -644,7 +679,6 @@ struct drm_crtc *mdp4_crtc_init(struct drm_device *dev,
crtc = &mdp4_crtc->base;
mdp4_crtc->plane = plane;
- mdp4_crtc->plane->crtc = crtc;
mdp4_crtc->ovlp = ovlp_id;
mdp4_crtc->dma = dma_id;