[PATCH v6 08/26] PM / devfreq: rk3399_dmc,dfi: generalize DDRTYPE defines

[Sascha Hauer]

The DDRTYPE defines are named to be RK3399 specific, but they can be
used for other Rockchip SoCs as well, so replace the RK3399_PMUGRF_
prefix with ROCKCHIP_. They are defined in a SoC specific header
file, so when generalizing the prefix also move the new defines to
a SoC agnostic header file. While at it use GENMASK to define the
DDRTYPE bitfield and give it a name including the full register name.

Reviewed-by: Sebastian Reichel <sebastian.reichel at collabora.com>
Link: https://lore.kernel.org/r/20230524083153.2046084-9-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/devfreq/event/rockchip-dfi.c |  9 +++++----
 drivers/devfreq/rk3399_dmc.c         | 10 +++++-----
 include/soc/rockchip/rk3399_grf.h    |  7 +------
 include/soc/rockchip/rockchip_grf.h  | 17 +++++++++++++++++
 4 files changed, 28 insertions(+), 15 deletions(-)
 create mode 100644 include/soc/rockchip/rockchip_grf.h

diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 82de24a027579..6bccb6fbcfc0c 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -18,8 +18,10 @@
 #include <linux/list.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/bitfield.h>
 #include <linux/bits.h>
 
+#include <soc/rockchip/rockchip_grf.h>
 #include <soc/rockchip/rk3399_grf.h>
 
 #define DMC_MAX_CHANNELS	2
@@ -74,9 +76,9 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
 	writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL);
 
 	/* set ddr type to dfi */
-	if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3)
+	if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3)
 		writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL);
-	else if (dfi->ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4)
+	else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4)
 		writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL);
 
 	/* enable count, use software mode */
@@ -191,8 +193,7 @@ static int rk3399_dfi_init(struct rockchip_dfi *dfi)
 
 	/* get ddr type */
 	regmap_read(regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
-	dfi->ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
-			RK3399_PMUGRF_DDRTYPE_MASK;
+	dfi->ddr_type = FIELD_GET(RK3399_PMUGRF_OS_REG2_DDRTYPE, val);
 
 	dfi->channel_mask = GENMASK(1, 0);
 
diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c
index daff407026157..fd2c5ffedf41e 100644
--- a/drivers/devfreq/rk3399_dmc.c
+++ b/drivers/devfreq/rk3399_dmc.c
@@ -22,6 +22,7 @@
 #include <linux/suspend.h>
 
 #include <soc/rockchip/pm_domains.h>
+#include <soc/rockchip/rockchip_grf.h>
 #include <soc/rockchip/rk3399_grf.h>
 #include <soc/rockchip/rockchip_sip.h>
 
@@ -381,17 +382,16 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
 	}
 
 	regmap_read(data->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
-	ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
-		    RK3399_PMUGRF_DDRTYPE_MASK;
+	ddr_type = FIELD_GET(RK3399_PMUGRF_OS_REG2_DDRTYPE, val);
 
 	switch (ddr_type) {
-	case RK3399_PMUGRF_DDRTYPE_DDR3:
+	case ROCKCHIP_DDRTYPE_DDR3:
 		data->odt_dis_freq = data->ddr3_odt_dis_freq;
 		break;
-	case RK3399_PMUGRF_DDRTYPE_LPDDR3:
+	case ROCKCHIP_DDRTYPE_LPDDR3:
 		data->odt_dis_freq = data->lpddr3_odt_dis_freq;
 		break;
-	case RK3399_PMUGRF_DDRTYPE_LPDDR4:
+	case ROCKCHIP_DDRTYPE_LPDDR4:
 		data->odt_dis_freq = data->lpddr4_odt_dis_freq;
 		break;
 	default:
diff --git a/include/soc/rockchip/rk3399_grf.h b/include/soc/rockchip/rk3399_grf.h
index 3eebabcb28123..775f8444bea8d 100644
--- a/include/soc/rockchip/rk3399_grf.h
+++ b/include/soc/rockchip/rk3399_grf.h
@@ -11,11 +11,6 @@
 
 /* PMU GRF Registers */
 #define RK3399_PMUGRF_OS_REG2		0x308
-#define RK3399_PMUGRF_DDRTYPE_SHIFT	13
-#define RK3399_PMUGRF_DDRTYPE_MASK	7
-#define RK3399_PMUGRF_DDRTYPE_DDR3	3
-#define RK3399_PMUGRF_DDRTYPE_LPDDR2	5
-#define RK3399_PMUGRF_DDRTYPE_LPDDR3	6
-#define RK3399_PMUGRF_DDRTYPE_LPDDR4	7
+#define RK3399_PMUGRF_OS_REG2_DDRTYPE		GENMASK(15, 13)
 
 #endif
diff --git a/include/soc/rockchip/rockchip_grf.h b/include/soc/rockchip/rockchip_grf.h
new file mode 100644
index 0000000000000..dde1a9796ccb5
--- /dev/null
+++ b/include/soc/rockchip/rockchip_grf.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Rockchip General Register Files definitions
+ */
+
+#ifndef __SOC_ROCKCHIP_GRF_H
+#define __SOC_ROCKCHIP_GRF_H
+
+/* Rockchip DDRTYPE defines */
+enum {
+	ROCKCHIP_DDRTYPE_DDR3	= 3,
+	ROCKCHIP_DDRTYPE_LPDDR2	= 5,
+	ROCKCHIP_DDRTYPE_LPDDR3	= 6,
+	ROCKCHIP_DDRTYPE_LPDDR4	= 7,
+};
+
+#endif /* __SOC_ROCKCHIP_GRF_H */
-- 
2.39.2