[PATCH v5 3/6] drm/tyr: Use register! macro for JOB_CONTROL

[Deborah Brouwer <deborah.brouwer@collabora.com>]

Define the JOB_CONTROL register block with the kernel's register! macro
and replace the existing hand-written JOB IRQ register definitions with
typed register and field accessors.

This adds typed definitions for the raw status, clear, mask, and status
registers, including the per-CSG interrupt bits and the global interface
interrupt bit.

This reduces open-coded bit manipulation, keeps the JOB_CONTROL register
layout in one place, and makes the definitions easier to read and
maintain.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Co-developed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
---
 drivers/gpu/drm/tyr/regs.rs | 58 ++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 50 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/tyr/regs.rs b/drivers/gpu/drm/tyr/regs.rs
index f7eea9bd81f1..946bb795d4ab 100644
--- a/drivers/gpu/drm/tyr/regs.rs
+++ b/drivers/gpu/drm/tyr/regs.rs
@@ -28,7 +28,6 @@
 #![allow(dead_code)]
 
 use kernel::{
-    bits::bit_u32,
     device::{
         Bound,
         Device, //
@@ -893,14 +892,57 @@ fn from(status: McuStatus) -> Self {
     }
 }
 
-pub(crate) const JOB_IRQ_RAWSTAT: Register<0x1000> = Register;
-pub(crate) const JOB_IRQ_CLEAR: Register<0x1004> = Register;
-pub(crate) const JOB_IRQ_MASK: Register<0x1008> = Register;
-pub(crate) const JOB_IRQ_STAT: Register<0x100c> = Register;
-
-pub(crate) const JOB_IRQ_GLOBAL_IF: u32 = bit_u32(31);
-
 pub(crate) const MMU_IRQ_RAWSTAT: Register<0x2000> = Register;
 pub(crate) const MMU_IRQ_CLEAR: Register<0x2004> = Register;
 pub(crate) const MMU_IRQ_MASK: Register<0x2008> = Register;
 pub(crate) const MMU_IRQ_STAT: Register<0x200c> = Register;
+
+/// These registers correspond to the JOB_CONTROL register page.
+/// They are involved in communication between the firmware running on the MCU and the host.
+pub(crate) mod job_control {
+    use kernel::register;
+
+    register! {
+        /// Raw status of job interrupts.
+        ///
+        /// Write to this register to trigger these interrupts.
+        /// Writing a 1 to a bit forces that bit on.
+        pub(crate) JOB_IRQ_RAWSTAT(u32) @ 0x1000 {
+            /// CSG request. These bits indicate that CSGn requires attention from the host.
+            30:0    csg;
+            /// GLB request. Indicates that the GLB interface requires attention from the host.
+            31:31   glb => bool;
+        }
+
+        /// Clear job interrupts. Write only.
+        ///
+        /// Write a 1 to a bit to clear the corresponding bit in [`JOB_IRQ_RAWSTAT`].
+        pub(crate) JOB_IRQ_CLEAR(u32) @ 0x1004 {
+            /// Clear CSG request interrupts.
+            30:0    csg;
+            /// Clear GLB request interrupt.
+            31:31   glb => bool;
+        }
+
+        /// Mask for job interrupts.
+        ///
+        /// Set each bit to 1 to enable the corresponding interrupt source or to 0 to disable it.
+        pub(crate) JOB_IRQ_MASK(u32) @ 0x1008 {
+            /// Enable CSG request interrupts.
+            30:0    csg;
+            /// Enable GLB request interrupt.
+            31:31   glb => bool;
+        }
+
+        /// Active job interrupts. Read only.
+        ///
+        /// This register contains the result of ANDing together [`JOB_IRQ_RAWSTAT`] and
+        /// [`JOB_IRQ_MASK`].
+        pub(crate) JOB_IRQ_STATUS(u32) @ 0x100c {
+            /// CSG request interrupt status.
+            30:0    csg;
+            /// GLB request interrupt status.
+            31:31   glb => bool;
+        }
+    }
+}

-- 
2.53.0