From 9036542c2befb00545f5b73e4e34f6697798fe7e Mon Sep 17 00:00:00 2001
From: Biju Das <biju.das.jz@bp.renesas.com>
Date: Wed, 22 Sep 2021 12:24:05 +0100
Subject: [PATCH] clk: renesas: rzg2l: Fix clk status function
Git-commit: fa2a30f8e0aa9304919750b116a9e9e322465299
Patch-mainline: v5.15-rc6
References: stable-5.14.14

commit fa2a30f8e0aa9304919750b116a9e9e322465299 upstream.

As per RZ/G2L HW(Rev.0.50) manual, clock monitor register value
0 means clock is not supplied and 1 means clock is supplied.
This patch fixes the issue by removing the inverted logic.

Fixing the above, triggered following 2 issues

1) GIC interrupts don't work if we disable IA55_CLK and DMAC_ACLK.
   Fixed this issue by adding these clocks as critical clocks.

2) DMA is not working, since the DMA driver is not turning on DMAC_PCLK.
   So will provide a fix in the DMA driver to turn on DMA_PCLK.

Fixes: ef3c613ccd68 ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210922112405.26413-2-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/clk/renesas/renesas-rzg2l-cpg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/renesas/renesas-rzg2l-cpg.c b/drivers/clk/renesas/renesas-rzg2l-cpg.c
index f894a210de90..ab6149b2048b 100644
--- a/drivers/clk/renesas/renesas-rzg2l-cpg.c
+++ b/drivers/clk/renesas/renesas-rzg2l-cpg.c
@@ -398,7 +398,7 @@ static int rzg2l_mod_clock_is_enabled(struct clk_hw *hw)
 
 	value = readl(priv->base + CLK_MON_R(clock->off));
 
-	return !(value & bitmask);
+	return value & bitmask;
 }
 
 static const struct clk_ops rzg2l_mod_clock_ops = {
-- 
2.26.2