From: kalakodima venkata rajesh venkatarajesh.kalakodima@in.bosch.com
Implement atomic helper check and allocate memory necessary for lut and clu tables
Signed-off-by: Harsha M M harsha.manjulamallikarjun@in.bosch.com
- Resolved checkpatch errors - Resolved merge conflicts according to latest version Signed-off-by: kalakodima venkata rajesh venkatarajesh.kalakodima@in.bosch.com --- drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 58 ++++++++++++++++++++++++++++++++++ drivers/gpu/drm/rcar-du/rcar_du_crtc.h | 3 +- 2 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index 864fb94..a00b7a7 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -622,6 +622,63 @@ static void rcar_du_crtc_stop(struct rcar_du_crtc *rcrtc) * CRTC Functions */
+static bool rcar_du_crtc_is_ctm_updated(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + return (state->color_mgmt_changed && state->ctm && + crtc->state->ctm && + (crtc->state->ctm->base.id != state->ctm->base.id)); +} + +static bool rcar_du_crtc_is_gamma_updated(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + return (state->color_mgmt_changed && state->gamma_lut && + crtc->state->gamma_lut && + (crtc->state->gamma_lut->base.id != state->gamma_lut->base.id)); +} + +static int rcar_du_crtc_cmm_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + int ret = 0; + struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); + + /*Check gamma update and allocate memory*/ + if (rcar_du_crtc_is_gamma_updated(crtc, state) && + !rcrtc->lut_handle) { + ret = rcar_du_cmm_lut_valid((crtc->state->gamma_lut->length / + sizeof(struct drm_color_lut))); + if (ret >= 0) { + rcrtc->lut_handle = + rcar_du_cmm_alloc_lut(rcrtc->cmm_handle); + if (!rcrtc->lut_handle) + ret = -ENOMEM; + } + } + + /*Check update of ctm and allocate memory*/ + if (ret >= 0 && rcar_du_crtc_is_ctm_updated(crtc, state) && + !rcrtc->clu_handle) { + rcrtc->clu_handle = rcar_du_cmm_alloc_clu(rcrtc->cmm_handle); + if (!rcrtc->clu_handle) { + if (!rcrtc->lut_handle) { + rcar_du_cmm_free_lut(rcrtc->lut_handle); + rcrtc->lut_handle = NULL; + } + ret = -ENOMEM; + } + } + + return ret; +} + +static int rcar_du_crtc_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + return rcar_du_crtc_cmm_atomic_check(crtc, state); +} + static void rcar_du_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { @@ -708,6 +765,7 @@ static const struct drm_crtc_helper_funcs crtc_helper_funcs = { .atomic_flush = rcar_du_crtc_atomic_flush, .atomic_enable = rcar_du_crtc_atomic_enable, .atomic_disable = rcar_du_crtc_atomic_disable, + .atomic_check = rcar_du_crtc_atomic_check, };
static struct drm_crtc_state * diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h index 5b85de4..b79080e 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h @@ -70,7 +70,8 @@ struct rcar_du_crtc { int lvds_ch;
void *cmm_handle; - + void *lut_handle; + void *clu_handle; };
#define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)