linux-kernel - [PATCH RESEND v8 2/3] clk: qcom: clk-rcg2: split __clk_rcg2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241118-starqltechn_integration_upstream-v8-2-ac8e36a3aa65@gmail.com>
Date: Mon, 18 Nov 2024 13:15:20 +0300
From: Dzmitry Sankouski <dsankouski@...il.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Dzmitry Sankouski <dsankouski@...il.com>
Subject: [PATCH RESEND v8 2/3] clk: qcom: clk-rcg2: split
 __clk_rcg2_configure function

__clk_rcg2_configure function does 2 things -
configures parent and mnd values. In order to
be able to add new clock options, we should split.

Move __clk_rcg2_configure logic on 2 functions:
- __clk_rcg2_configure_parent which configures clock parent
- __clk_rcg2_configure_mnd which configures mnd values

__clk_rcg2_configure delegates to mentioned functions.

Signed-off-by: Dzmitry Sankouski <dsankouski@...il.com>
---
 drivers/clk/qcom/clk-rcg2.c | 37 +++++++++++++++++++++++++++++++------
 1 file changed, 31 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c
index b403e4d6dcdd..714ab79e11d6 100644
--- a/drivers/clk/qcom/clk-rcg2.c
+++ b/drivers/clk/qcom/clk-rcg2.c
@@ -402,16 +402,26 @@ static int clk_rcg2_fm_determine_rate(struct clk_hw *hw,
 	return _freq_tbl_fm_determine_rate(hw, rcg->freq_multi_tbl, req);
 }
 
-static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f,
-				u32 *_cfg)
+static int __clk_rcg2_configure_parent(struct clk_rcg2 *rcg, u8 src, u32 *_cfg)
 {
-	u32 cfg, mask, d_val, not2d_val, n_minus_m;
 	struct clk_hw *hw = &rcg->clkr.hw;
-	int ret, index = qcom_find_src_index(hw, rcg->parent_map, f->src);
+	int index = qcom_find_src_index(hw, rcg->parent_map, src);
 
 	if (index < 0)
 		return index;
 
+	*_cfg &= ~CFG_SRC_SEL_MASK;
+	*_cfg |= rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
+
+	return 0;
+}
+
+static int __clk_rcg2_configure_mnd(struct clk_rcg2 *rcg, const struct freq_tbl *f,
+				u32 *_cfg)
+{
+	u32 cfg, mask, d_val, not2d_val, n_minus_m;
+	int ret;
+
 	if (rcg->mnd_width && f->n) {
 		mask = BIT(rcg->mnd_width) - 1;
 		ret = regmap_update_bits(rcg->clkr.regmap,
@@ -440,9 +450,8 @@ static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f,
 	}
 
 	mask = BIT(rcg->hid_width) - 1;
-	mask |= CFG_SRC_SEL_MASK | CFG_MODE_MASK | CFG_HW_CLK_CTRL_MASK;
+	mask |= CFG_MODE_MASK | CFG_HW_CLK_CTRL_MASK;
 	cfg = f->pre_div << CFG_SRC_DIV_SHIFT;
-	cfg |= rcg->parent_map[index].cfg << CFG_SRC_SEL_SHIFT;
 	if (rcg->mnd_width && f->n && (f->m != f->n))
 		cfg |= CFG_MODE_DUAL_EDGE;
 	if (rcg->hw_clk_ctrl)
@@ -454,6 +463,22 @@ static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f,
 	return 0;
 }
 
+static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f,
+				u32 *_cfg)
+{
+	int ret;
+
+	ret = __clk_rcg2_configure_parent(rcg, f->src, _cfg);
+	if (ret)
+		return ret;
+
+	ret = __clk_rcg2_configure_mnd(rcg, f, _cfg);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
 static int clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f)
 {
 	u32 cfg;

-- 
2.39.2