media: mediatek: vcodec: Define address for VDEC_HW_ACTIVE

The VDEC_HW_ACTIVE bit is located at offset 0, bit 4 of the VDECSYS
iospace. Only the mask was previously defined, with the address being
implicit. Explicitly define the address, and append a '_MASK' suffix to
the mask, to make accesses to this bit clearer.

This commit brings no functional change.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_drv.c

@@ -51,8 +51,8 @@ static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
 	ctx = mtk_vcodec_get_curr_ctx(dev, MTK_VDEC_CORE);
 
 	/* check if HW active or not */
-	cg_status = readl(dev->reg_base[0]);
-	if ((cg_status & VDEC_HW_ACTIVE) != 0) {
+	cg_status = readl(dev->reg_base[0] + VDEC_HW_ACTIVE_ADDR);
+	if ((cg_status & VDEC_HW_ACTIVE_MASK) != 0) {
 		mtk_v4l2_err("DEC ISR, VDEC active is not 0x0 (0x%08x)",
 			     cg_status);
 		return IRQ_HANDLED;

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_hw.c

@@ -75,8 +75,8 @@ static irqreturn_t mtk_vdec_hw_irq_handler(int irq, void *priv)
 	ctx = mtk_vcodec_get_curr_ctx(dev->main_dev, dev->hw_idx);
 
 	/* check if HW active or not */
-	cg_status = readl(dev->reg_base[VDEC_HW_SYS]);
-	if (cg_status & VDEC_HW_ACTIVE) {
+	cg_status = readl(dev->reg_base[VDEC_HW_SYS] + VDEC_HW_ACTIVE_ADDR);
+	if (cg_status & VDEC_HW_ACTIVE_MASK) {
 		mtk_v4l2_err("vdec active is not 0x0 (0x%08x)",
 			     cg_status);
 		return IRQ_HANDLED;

drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec_hw.h

@@ -12,7 +12,8 @@
 
 #include "mtk_vcodec_drv.h"
 
-#define VDEC_HW_ACTIVE 0x10
+#define VDEC_HW_ACTIVE_ADDR 0x0
+#define VDEC_HW_ACTIVE_MASK BIT(4)
 #define VDEC_IRQ_CFG 0x11
 #define VDEC_IRQ_CLR 0x10
 #define VDEC_IRQ_CFG_REG 0xa4