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[11/18] PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly

Message ID 20230203125012.3804008-12-s.hauer@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series Add perf support to the rockchip-dfi driver | expand

Commit Message

Sascha Hauer Feb. 3, 2023, 12:50 p.m. UTC 
According to the downstream driver the DDRMON_CTRL_LPDDR23 bit must be
set for both LPDDR2 and LPDDR3. Add the missing LPDDR2 case and while
at it turn the if/else if/else into switch/case which makes it easier
to read.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/devfreq/event/rockchip-dfi.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 78cb594bd2a81..92ee61c96a1a9 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -82,12 +82,19 @@  static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
 	writel_relaxed(HIWORD_UPDATE(0, 0xffff), dfi_regs + DDRMON_CTRL);
 
 	/* set ddr type to dfi */
-	if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR3)
+	switch (dfi->ddr_type) {
+	case ROCKCHIP_DDRTYPE_LPDDR2:
+	case ROCKCHIP_DDRTYPE_LPDDR3:
 		writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR23, DDRMON_CTRL_DDR_TYPE_MASK),
 			       dfi_regs + DDRMON_CTRL);
-	else if (dfi->ddr_type == ROCKCHIP_DDRTYPE_LPDDR4)
+		break;
+	case ROCKCHIP_DDRTYPE_LPDDR4:
 		writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_LPDDR4, DDRMON_CTRL_DDR_TYPE_MASK),
 			       dfi_regs + DDRMON_CTRL);
+		break;
+	default:
+		break;
+	}
 
 	/* enable count, use software mode */
 	writel_relaxed(HIWORD_UPDATE(DDRMON_CTRL_SOFTWARE_EN, DDRMON_CTRL_SOFTWARE_EN),