Convert all PDISP registers to use the kernel's register macro and
update the code accordingly.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 drivers/gpu/nova-core/fb.rs   |  6 +++++-
 drivers/gpu/nova-core/regs.rs | 12 ++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/nova-core/fb.rs b/drivers/gpu/nova-core/fb.rs
index 6536d0035cb1..62fc90fa6a84 100644
--- a/drivers/gpu/nova-core/fb.rs
+++ b/drivers/gpu/nova-core/fb.rs
@@ -8,6 +8,7 @@
 use kernel::{
     device,
     fmt,
+    io::Io,
     prelude::*,
     ptr::{
         Alignable,
@@ -189,7 +190,10 @@ pub(crate) fn new(chipset: Chipset, bar: &Bar0, gsp_fw: &GspFirmware) -> Result<
                 let base = fb.end - NV_PRAMIN_SIZE;
 
                 if hal.supports_display(bar) {
-                    match regs::NV_PDISP_VGA_WORKSPACE_BASE::read(bar).vga_workspace_addr() {
+                    match bar
+                        .read(regs::NV_PDISP_VGA_WORKSPACE_BASE)
+                        .vga_workspace_addr()
+                    {
                         Some(addr) => {
                             if addr < base {
                                 const VBIOS_WORKSPACE_SIZE: u64 = usize_as_u64(SZ_128K);
diff --git a/drivers/gpu/nova-core/regs.rs b/drivers/gpu/nova-core/regs.rs
index 9682a94b8b77..4ac4e9126db8 100644
--- a/drivers/gpu/nova-core/regs.rs
+++ b/drivers/gpu/nova-core/regs.rs
@@ -274,10 +274,14 @@ pub(crate) fn usable_fb_size(self) -> u64 {
 
 // PDISP
 
-register!(NV_PDISP_VGA_WORKSPACE_BASE @ 0x00625f04 {
-    3:3     status_valid as bool, "Set if the `addr` field is valid";
-    31:8    addr as u32, "VGA workspace base address divided by 0x10000";
-});
+nv_reg! {
+    NV_PDISP_VGA_WORKSPACE_BASE @ 0x00625f04 {
+        /// Set if the `addr` field is valid.
+        3:3     status_valid => bool;
+        /// VGA workspace base address divided by 0x10000.
+        31:8    addr;
+    }
+}
 
 impl NV_PDISP_VGA_WORKSPACE_BASE {
     /// Returns the base address of the VGA workspace, or `None` if none exists.

-- 
2.53.0

On Wed Mar 18, 2026 at 5:06 PM JST, Alexandre Courbot wrote:
> Convert all PDISP registers to use the kernel's register macro and
> update the code accordingly.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>