[PATCH v2 1/3] drm/rockchip: vop: Add support for interrupt registers using write-masks

[Yakir Yang]

Some new display-controllers are need to set write-masks to enable writes
to interrupt registers. Allow this to be set on a per-vop basis.

Signed-off-by: Yakir Yang <ykk at rock-chips.com>
---
Changes in v2:
- Add this patch in v2 (Heiko)

 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 7 +++++--
 drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 1 +
 drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 2 ++
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index d83bf87..3c83097 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -63,9 +63,12 @@
 #define VOP_INTR_SET_TYPE(vop, name, type, v) \
        do { \
                int i, reg = 0; \
-               for (i = 0; i < vop->data->intr->nintrs; i++) { \
-                       if (vop->data->intr->intrs[i] & type) \
+               const struct vop_intr *intr = vop->data->intr; \
+               for (i = 0; i < intr->nintrs; i++) { \
+                       if (intr->intrs[i] & type) { \
                                reg |= (v) << i; \
+                               reg |= intr->write_mask ? (1 << (i + 16)) : 0; \
+                       } \
                } \
                VOP_INTR_SET(vop, name, reg); \
        } while (0)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index 071ff0b..f1bb84d 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -60,6 +60,7 @@ struct vop_ctrl {
 };

 struct vop_intr {
+       bool write_mask;
        const int *intrs;
        uint32_t nintrs;
        struct vop_reg enable;
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c 
b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index 3166b46..7fbaf76 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -174,6 +174,7 @@ static const int rk3288_vop_intrs[] = {
 };

 static const struct vop_intr rk3288_vop_intr = {
+       .write_mask = false,
        .intrs = rk3288_vop_intrs,
        .nintrs = ARRAY_SIZE(rk3288_vop_intrs),
        .status = VOP_REG(RK3288_INTR_CTRL0, 0xf, 0),
@@ -240,6 +241,7 @@ static const int rk3036_vop_intrs[] = {
 };

 static const struct vop_intr rk3036_intr = {
+       .write_mask = false,
        .intrs = rk3036_vop_intrs,
        .nintrs = ARRAY_SIZE(rk3036_vop_intrs),
        .status = VOP_REG(RK3036_INT_STATUS, 0xf, 0),
-- 
1.9.1