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drm/rockchip: vop: add support write regs

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Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: I9029b9d22a96cd490104073ed4c12a02860b52bd
This commit is contained in:
Sandy Huang
2024-07-22 10:52:27 +08:00
committed by Huang Jiachai
parent a94380efa6
commit 07bceaca58
1 changed files with 33 additions and 0 deletions
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33
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@@ -272,6 +272,7 @@ struct vop {
/* physical map length of vop register */
uint32_t len;
struct resource *lut_res;
void __iomem *lut_regs;
u32 *lut;
u32 lut_len;
@@ -2823,6 +2824,35 @@ static void vop_crtc_regs_dump(struct drm_crtc *crtc, struct seq_file *s)
}
}
static int vop_crtc_regs_write(struct drm_crtc *crtc, phys_addr_t address, u32 val)
{
struct vop *vop = to_vop(crtc);
struct drm_crtc_state *crtc_state = crtc->state;
void __iomem *regs;
u32 offset = 0;
if (!crtc_state->active) {
DRM_DEV_ERROR(vop->dev, "VOP is disabled");
return -EINVAL;
}
if (vop->res && address >= vop->res->start &&
address < vop->res->end) {
regs = vop->regs;
offset = address - vop->res->start;
} else if (vop->lut_res && address >= vop->lut_res->start &&
address < vop->lut_res->end) {
regs = vop->lut_regs;
offset = address - vop->lut_res->start;
} else {
DRM_ERROR("unsupported address: %pa\n", &address);
return -ENXIO;
}
writel(val, regs + offset);
return 0;
}
static int vop_gamma_show(struct seq_file *s, void *data)
{
struct drm_info_node *node = s->private;
@@ -2868,6 +2898,7 @@ static int vop_crtc_debugfs_init(struct drm_minor *minor, struct drm_crtc *crtc)
}
#if defined(CONFIG_ROCKCHIP_DRM_DEBUG)
rockchip_drm_add_dump_buffer(crtc, vop->debugfs);
rockchip_drm_debugfs_add_regs_write(crtc, vop->debugfs);
#endif
for (i = 0; i < ARRAY_SIZE(vop_debugfs_files); i++)
vop->debugfs_files[i].data = vop;
@@ -3242,6 +3273,7 @@ static const struct rockchip_crtc_funcs private_crtc_funcs = {
.debugfs_dump = vop_crtc_debugfs_dump,
.active_regs_dump = vop_crtc_regs_dump,
.regs_dump = vop_crtc_regs_dump,
.regs_write = vop_crtc_regs_write,
.bandwidth = vop_crtc_bandwidth,
.crtc_close = vop_crtc_close,
.crtc_send_mcu_cmd = vop_crtc_send_mcu_cmd,
@@ -5259,6 +5291,7 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "gamma_lut");
if (res) {
vop->res = res;
vop->lut_len = resource_size(res) / sizeof(*vop->lut);
if (vop->lut_len != 256 && vop->lut_len != 1024) {
dev_err(vop->dev, "unsupported lut sizes %d\n",