From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/clk/renesas/rcar-gen2-cpg.c | 32 ++++++++++++++++----------------
1 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/kernel/drivers/clk/renesas/rcar-gen2-cpg.c b/kernel/drivers/clk/renesas/rcar-gen2-cpg.c
index 9080caa..d4fa3dc 100644
--- a/kernel/drivers/clk/renesas/rcar-gen2-cpg.c
+++ b/kernel/drivers/clk/renesas/rcar-gen2-cpg.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* R-Car Gen2 Clock Pulse Generator
*
* Copyright (C) 2016 Cogent Embedded Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
*/
#include <linux/bug.h>
@@ -66,19 +63,22 @@
return div_u64((u64)parent_rate * mult, 32);
}
-static long cpg_z_clk_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int cpg_z_clk_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
- unsigned long prate = *parent_rate;
- unsigned int mult;
+ unsigned long prate = req->best_parent_rate;
+ unsigned int min_mult, max_mult, mult;
- if (!prate)
- prate = 1;
+ min_mult = max(div64_ul(req->min_rate * 32ULL, prate), 1ULL);
+ max_mult = min(div64_ul(req->max_rate * 32ULL, prate), 32ULL);
+ if (max_mult < min_mult)
+ return -EINVAL;
- mult = div_u64((u64)rate * 32, prate);
- mult = clamp(mult, 1U, 32U);
+ mult = div64_ul(req->rate * 32ULL, prate);
+ mult = clamp(mult, min_mult, max_mult);
- return *parent_rate / 32 * mult;
+ req->rate = div_u64((u64)prate * mult, 32);
+ return 0;
}
static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -89,7 +89,7 @@
u32 val, kick;
unsigned int i;
- mult = div_u64((u64)rate * 32, parent_rate);
+ mult = div64_ul(rate * 32ULL, parent_rate);
mult = clamp(mult, 1U, 32U);
if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
@@ -129,7 +129,7 @@
static const struct clk_ops cpg_z_clk_ops = {
.recalc_rate = cpg_z_clk_recalc_rate,
- .round_rate = cpg_z_clk_round_rate,
+ .determine_rate = cpg_z_clk_determine_rate,
.set_rate = cpg_z_clk_set_rate,
};
@@ -137,7 +137,7 @@
const char *parent_name,
void __iomem *base)
{
- struct clk_init_data init = {};
+ struct clk_init_data init;
struct cpg_z_clk *zclk;
struct clk *clk;
--
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