media: rc: meson-ir: rename Meson IR Controller register macros

There are more registers to come in the next Meson IR Controller.
For defining clearly, rename register macros.
Signed-off-by: Zelong Dong <zelong.dong@amlogic.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/rc/meson-ir.c

@@ -24,31 +24,30 @@
 #define IR_DEC_LDR_REPEAT	0x08
 #define IR_DEC_BIT_0		0x0c
 #define IR_DEC_REG0		0x10
-#define REG0_RATE_MASK		GENMASK(11, 0)
+#define IR_DEC_REG0_BASE_TIME	GENMASK(11, 0)
 #define IR_DEC_FRAME		0x14
 #define IR_DEC_STATUS		0x18
-#define STATUS_IR_DEC_IN	BIT(8)
+#define IR_DEC_STATUS_PULSE	BIT(8)
 #define IR_DEC_REG1		0x1c
-#define REG1_TIME_IV_MASK	GENMASK(28, 16)
-#define REG1_ENABLE		BIT(15)
-#define REG1_MODE_MASK		GENMASK(8, 7)
-#define REG1_MODE_SHIFT		7
-#define REG1_IRQSEL_MASK	GENMASK(3, 2)
-#define REG1_RESET		BIT(0)
+#define IR_DEC_REG1_TIME_IV	GENMASK(28, 16)
+#define IR_DEC_REG1_ENABLE	BIT(15)
+#define IR_DEC_REG1_MODE	GENMASK(8, 7)
+#define IR_DEC_REG1_IRQSEL	GENMASK(3, 2)
+#define IR_DEC_REG1_RESET	BIT(0)
 /* The following regs are only available on Meson 8b and newer */
 #define IR_DEC_REG2		0x20
-#define REG2_MODE_MASK		GENMASK(3, 0)
-#define REG2_MODE_SHIFT		0
+#define IR_DEC_REG2_MODE	GENMASK(3, 0)
 
-#define DECODE_MODE_NEC		0x0
-#define DECODE_MODE_RAW		0x2
+#define DEC_MODE_NEC		0x0
+#define DEC_MODE_RAW		0x2
 
-#define REG1_IRQSEL_NEC_MODE	0
-#define REG1_IRQSEL_RISE_FALL	1
-#define REG1_IRQSEL_FALL	2
-#define REG1_IRQSEL_RISE	3
+#define IRQSEL_NEC_MODE		0
+#define IRQSEL_RISE_FALL	1
+#define IRQSEL_FALL		2
+#define IRQSEL_RISE		3
 
-#define MESON_TRATE		10	/* us */
+#define MESON_RAW_TRATE		10	/* us */
+#define MESON_HW_TRATE		20	/* us */
 
 struct meson_ir {
 	void __iomem	*reg;
@@ -76,11 +75,11 @@ static irqreturn_t meson_ir_irq(int irqno, void *dev_id)
 	spin_lock(&ir->lock);
 
 	duration = readl_relaxed(ir->reg + IR_DEC_REG1);
-	duration = FIELD_GET(REG1_TIME_IV_MASK, duration);
-	rawir.duration = duration * MESON_TRATE;
+	duration = FIELD_GET(IR_DEC_REG1_TIME_IV, duration);
+	rawir.duration = duration * MESON_RAW_TRATE;
 
 	status = readl_relaxed(ir->reg + IR_DEC_STATUS);
-	rawir.pulse = !!(status & STATUS_IR_DEC_IN);
+	rawir.pulse = !!(status & IR_DEC_STATUS_PULSE);
 
 	ir_raw_event_store_with_timeout(ir->rc, &rawir);
 
@@ -122,7 +121,7 @@ static int meson_ir_probe(struct platform_device *pdev)
 	map_name = of_get_property(node, "linux,rc-map-name", NULL);
 	ir->rc->map_name = map_name ? map_name : RC_MAP_EMPTY;
 	ir->rc->allowed_protocols = RC_PROTO_BIT_ALL_IR_DECODER;
-	ir->rc->rx_resolution = MESON_TRATE;
+	ir->rc->rx_resolution = MESON_RAW_TRATE;
 	ir->rc->min_timeout = 1;
 	ir->rc->timeout = IR_DEFAULT_TIMEOUT;
 	ir->rc->max_timeout = 10 * IR_DEFAULT_TIMEOUT;
@@ -144,24 +143,27 @@ static int meson_ir_probe(struct platform_device *pdev)
 	}
 
 	/* Reset the decoder */
-	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, REG1_RESET);
-	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, 0);
+	meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_RESET,
+			  IR_DEC_REG1_RESET);
+	meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_RESET, 0);
 
 	/* Set general operation mode (= raw/software decoding) */
 	if (of_device_is_compatible(node, "amlogic,meson6-ir"))
-		meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK,
-				  FIELD_PREP(REG1_MODE_MASK, DECODE_MODE_RAW));
+		meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_MODE,
+				  FIELD_PREP(IR_DEC_REG1_MODE, DEC_MODE_RAW));
 	else
-		meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK,
-				  FIELD_PREP(REG2_MODE_MASK, DECODE_MODE_RAW));
+		meson_ir_set_mask(ir, IR_DEC_REG2, IR_DEC_REG2_MODE,
+				  FIELD_PREP(IR_DEC_REG2_MODE, DEC_MODE_RAW));
 
 	/* Set rate */
-	meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, MESON_TRATE - 1);
+	meson_ir_set_mask(ir, IR_DEC_REG0, IR_DEC_REG0_BASE_TIME,
+			  MESON_RAW_TRATE - 1);
 	/* IRQ on rising and falling edges */
-	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_IRQSEL_MASK,
-			  FIELD_PREP(REG1_IRQSEL_MASK, REG1_IRQSEL_RISE_FALL));
+	meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_IRQSEL,
+			  FIELD_PREP(IR_DEC_REG1_IRQSEL, IRQSEL_RISE_FALL));
 	/* Enable the decoder */
-	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, REG1_ENABLE);
+	meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_ENABLE,
+			  IR_DEC_REG1_ENABLE);
 
 	dev_info(dev, "receiver initialized\n");
 
@@ -175,7 +177,7 @@ static void meson_ir_remove(struct platform_device *pdev)
 
 	/* Disable the decoder */
 	spin_lock_irqsave(&ir->lock, flags);
-	meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, 0);
+	meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_ENABLE, 0);
 	spin_unlock_irqrestore(&ir->lock, flags);
 }
 
@@ -193,14 +195,15 @@ static void meson_ir_shutdown(struct platform_device *pdev)
 	 * bootloader a chance to power the system back on
 	 */
 	if (of_device_is_compatible(node, "amlogic,meson6-ir"))
-		meson_ir_set_mask(ir, IR_DEC_REG1, REG1_MODE_MASK,
-				  DECODE_MODE_NEC << REG1_MODE_SHIFT);
+		meson_ir_set_mask(ir, IR_DEC_REG1, IR_DEC_REG1_MODE,
+				  FIELD_PREP(IR_DEC_REG1_MODE, DEC_MODE_NEC));
 	else
-		meson_ir_set_mask(ir, IR_DEC_REG2, REG2_MODE_MASK,
-				  DECODE_MODE_NEC << REG2_MODE_SHIFT);
+		meson_ir_set_mask(ir, IR_DEC_REG2, IR_DEC_REG2_MODE,
+				  FIELD_PREP(IR_DEC_REG2_MODE, DEC_MODE_NEC));
 
 	/* Set rate to default value */
-	meson_ir_set_mask(ir, IR_DEC_REG0, REG0_RATE_MASK, 0x13);
+	meson_ir_set_mask(ir, IR_DEC_REG0, IR_DEC_REG0_BASE_TIME,
+			  MESON_HW_TRATE - 1);
 
 	spin_unlock_irqrestore(&ir->lock, flags);
 }