[PATCH v2 01/12] drm/bridge: tc358762: Clean up register defines

From: Tomi Valkeinen

Date: Fri Mar 27 2026 - 06:28:59 EST


Move the defines around and rename for clarity and consistency. No
functional change.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/tc358762.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc358762.c
index 98df3e667d4a..833fd9913c75 100644
--- a/drivers/gpu/drm/bridge/tc358762.c
+++ b/drivers/gpu/drm/bridge/tc358762.c
@@ -29,17 +29,22 @@

/* PPI layer registers */
#define PPI_STARTPPI 0x0104 /* START control bit */
+#define PPI_STARTPPI_STARTPPI BIT(0)
+
#define PPI_LPTXTIMECNT 0x0114 /* LPTX timing signal */
#define PPI_D0S_ATMR 0x0144
#define PPI_D1S_ATMR 0x0148
#define PPI_D0S_CLRSIPOCOUNT 0x0164 /* Assertion timer for Lane 0 */
#define PPI_D1S_CLRSIPOCOUNT 0x0168 /* Assertion timer for Lane 1 */
-#define PPI_START_FUNCTION 1

/* DSI layer registers */
#define DSI_STARTDSI 0x0204 /* START control bit of DSI-TX */
+#define DSI_STARTDSI_STARTDSI BIT(0)
+
#define DSI_LANEENABLE 0x0210 /* Enables each lane */
-#define DSI_RX_START 1
+#define DSI_LANEENABLE_CLEN BIT(0)
+#define DSI_LANEENABLE_L0EN BIT(1)
+#define DSI_LANEENABLE_L1EN BIT(2)

/* LCDC/DPI Host Registers, based on guesswork that this matches TC358764 */
#define LCDCTRL 0x0420 /* Video Path Control */
@@ -60,14 +65,8 @@
/* System Controller Registers */
#define SYSCTRL 0x0464

-/* System registers */
#define LPX_PERIOD 3

-/* Lane enable PPI and DSI register bits */
-#define LANEENABLE_CLEN BIT(0)
-#define LANEENABLE_L0EN BIT(1)
-#define LANEENABLE_L1EN BIT(2)
-
struct tc358762 {
struct device *dev;
struct drm_bridge bridge;
@@ -118,7 +117,7 @@ static int tc358762_init(struct tc358762 *ctx)
u32 lcdctrl;

tc358762_write(ctx, DSI_LANEENABLE,
- LANEENABLE_L0EN | LANEENABLE_CLEN);
+ DSI_LANEENABLE_L0EN | DSI_LANEENABLE_CLEN);
tc358762_write(ctx, PPI_D0S_CLRSIPOCOUNT, 5);
tc358762_write(ctx, PPI_D1S_CLRSIPOCOUNT, 5);
tc358762_write(ctx, PPI_D0S_ATMR, 0);
@@ -141,8 +140,8 @@ static int tc358762_init(struct tc358762 *ctx)
tc358762_write(ctx, SYSCTRL, 0x040f);
msleep(100);

- tc358762_write(ctx, PPI_STARTPPI, PPI_START_FUNCTION);
- tc358762_write(ctx, DSI_STARTDSI, DSI_RX_START);
+ tc358762_write(ctx, PPI_STARTPPI, PPI_STARTPPI_STARTPPI);
+ tc358762_write(ctx, DSI_STARTDSI, DSI_STARTDSI_STARTDSI);

msleep(100);


--
2.43.0