[PATCH v4 09/21] PM / devfreq: rockchip-dfi: Clean up DDR type register defines

From: Sascha Hauer <s.hauer@pengutronix.de>
To: linux-rockchip@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org,
	Heiko Stuebner <heiko@sntech.de>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	kernel@pengutronix.de,
	Michael Riesch <michael.riesch@wolfvision.net>,
	Sascha Hauer <s.hauer@pengutronix.de>
Subject: [PATCH v4 09/21] PM / devfreq: rockchip-dfi: Clean up DDR type register defines
Date: Fri,  5 May 2023 13:38:44 +0200	[thread overview]
Message-ID: <20230505113856.463650-10-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20230505113856.463650-1-s.hauer@pengutronix.de>

Use the HIWORD_UPDATE() define known from other rockchip drivers to
make the defines look less odd to the readers who've seen other
rockchip drivers.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/devfreq/event/rockchip-dfi.c | 32 +++++++++++++++++-----------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 7896cd8beb143..035984d3c7b01 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -26,15 +26,19 @@
 
 #define DMC_MAX_CHANNELS	2
 
+#define HIWORD_UPDATE(val, mask)	((val) | (mask) << 16)
+
 /* DDRMON_CTRL */
 #define DDRMON_CTRL	0x04
-#define CLR_DDRMON_CTRL	(0x1f0000 << 0)
-#define LPDDR4_EN	(0x10001 << 4)
-#define HARDWARE_EN	(0x10001 << 3)
-#define LPDDR3_EN	(0x10001 << 2)
-#define SOFTWARE_EN	(0x10001 << 1)
-#define SOFTWARE_DIS	(0x10000 << 1)
-#define TIME_CNT_EN	(0x10001 << 0)
+#define DDRMON_CTRL_DDR4		BIT(5)
+#define DDRMON_CTRL_LPDDR4		BIT(4)
+#define DDRMON_CTRL_HARDWARE_EN		BIT(3)
+#define DDRMON_CTRL_LPDDR23		BIT(2)
+#define DDRMON_CTRL_SOFTWARE_EN		BIT(1)
+#define DDRMON_CTRL_TIMER_CNT_EN	BIT(0)
+#define DDRMON_CTRL_DDR_TYPE_MASK	(DDRMON_CTRL_DDR4 | \
+					 DDRMON_CTRL_LPDDR4 | \
+					 DDRMON_CTRL_LPDDR23)
 
 #define DDRMON_CH0_COUNT_NUM		0x28
 #define DDRMON_CH0_DFI_ACCESS_NUM	0x2c
@@ -74,16 +78,19 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
 	void __iomem *dfi_regs = dfi->regs;
 
 	/* clear DDRMON_CTRL setting */
-	writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL);
+	writel_relaxed(HIWORD_UPDATE(0, 0xffff), dfi_regs + DDRMON_CTRL);
 
 	/* set ddr type to dfi */
 	if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3)
-		writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL);
+		writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR23, DDRMON_CTRL_DDR_TYPE_MASK),
+			       dfi_regs + DDRMON_CTRL);
 	else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4)
-		writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL);
+		writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK),
+			       dfi_regs + DDRMON_CTRL);
 
 	/* enable count, use software mode */
-	writel_relaxed(SOFTWARE_EN, dfi_regs + DDRMON_CTRL);
+	writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN),
+		       dfi_regs + DDRMON_CTRL);
 }
 
 static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev)
@@ -91,7 +98,8 @@ static void rockchip_dfi_stop_hardware_counter(struct devfreq_event_dev *edev)
 	struct rockchip_dfi *dfi = devfreq_event_get_drvdata(edev);
 	void __iomem *dfi_regs = dfi->regs;
 
-	writel_relaxed(SOFTWARE_DIS, dfi_regs + DDRMON_CTRL);
+	writel_relaxed(HIWORD_UPDATE(0, DDRMON_CTRL_SOFTWARE_EN),
+		       dfi_regs + DDRMON_CTRL);
 }
 
 static void rockchip_dfi_read_counters(struct devfreq_event_dev *edev, struct dmc_count *count)
-- 
2.39.2


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