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Date: Wed, 20 Jun 2018 12:06:10 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Neil Armstrong <narmstrong@...libre.com>,
Kevin Hilman <khilman@...libre.com>,
Carlo Caione <carlo@...one.org>
Cc: Jerome Brunet <jbrunet@...libre.com>,
linux-amlogic@...ts.infradead.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] clk: meson: remove unused clk-audio-divider driver
clk-audio-divider is no longer used, we can remove it.
Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
---
drivers/clk/meson/Makefile | 2 +-
drivers/clk/meson/clk-audio-divider.c | 110 ----------------------------------
drivers/clk/meson/clkc.h | 7 ---
3 files changed, 1 insertion(+), 118 deletions(-)
delete mode 100644 drivers/clk/meson/clk-audio-divider.c
diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile
index d0d13aeb369a..e40fea96069b 100644
--- a/drivers/clk/meson/Makefile
+++ b/drivers/clk/meson/Makefile
@@ -2,7 +2,7 @@
# Makefile for Meson specific clk
#
-obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-mpll.o clk-audio-divider.o
+obj-$(CONFIG_COMMON_CLK_AMLOGIC) += clk-pll.o clk-mpll.o
obj-$(CONFIG_COMMON_CLK_MESON_AO) += meson-aoclk.o
obj-$(CONFIG_COMMON_CLK_MESON8B) += meson8b.o
obj-$(CONFIG_COMMON_CLK_GXBB) += gxbb.o gxbb-aoclk.o gxbb-aoclk-32k.o
diff --git a/drivers/clk/meson/clk-audio-divider.c b/drivers/clk/meson/clk-audio-divider.c
deleted file mode 100644
index e4cf96ba704e..000000000000
--- a/drivers/clk/meson/clk-audio-divider.c
+++ /dev/null
@@ -1,110 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2017 AmLogic, Inc.
- * Author: Jerome Brunet <jbrunet@...libre.com>
- */
-
-/*
- * i2s master clock divider: The algorithm of the generic clk-divider used with
- * a very precise clock parent such as the mpll tends to select a low divider
- * factor. This gives poor results with this particular divider, especially with
- * high frequencies (> 100 MHz)
- *
- * This driver try to select the maximum possible divider with the rate the
- * upstream clock can provide.
- */
-
-#include <linux/clk-provider.h>
-#include "clkc.h"
-
-static inline struct meson_clk_audio_div_data *
-meson_clk_audio_div_data(struct clk_regmap *clk)
-{
- return (struct meson_clk_audio_div_data *)clk->data;
-}
-
-static int _div_round(unsigned long parent_rate, unsigned long rate,
- unsigned long flags)
-{
- if (flags & CLK_DIVIDER_ROUND_CLOSEST)
- return DIV_ROUND_CLOSEST_ULL((u64)parent_rate, rate);
-
- return DIV_ROUND_UP_ULL((u64)parent_rate, rate);
-}
-
-static int _get_val(unsigned long parent_rate, unsigned long rate)
-{
- return DIV_ROUND_UP_ULL((u64)parent_rate, rate) - 1;
-}
-
-static int _valid_divider(unsigned int width, int divider)
-{
- int max_divider = 1 << width;
-
- return clamp(divider, 1, max_divider);
-}
-
-static unsigned long audio_divider_recalc_rate(struct clk_hw *hw,
- unsigned long parent_rate)
-{
- struct clk_regmap *clk = to_clk_regmap(hw);
- struct meson_clk_audio_div_data *adiv = meson_clk_audio_div_data(clk);
- unsigned long divider;
-
- divider = meson_parm_read(clk->map, &adiv->div) + 1;
-
- return DIV_ROUND_UP_ULL((u64)parent_rate, divider);
-}
-
-static long audio_divider_round_rate(struct clk_hw *hw,
- unsigned long rate,
- unsigned long *parent_rate)
-{
- struct clk_regmap *clk = to_clk_regmap(hw);
- struct meson_clk_audio_div_data *adiv = meson_clk_audio_div_data(clk);
- unsigned long max_prate;
- int divider;
-
- if (!(clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)) {
- divider = _div_round(*parent_rate, rate, adiv->flags);
- divider = _valid_divider(adiv->div.width, divider);
- return DIV_ROUND_UP_ULL((u64)*parent_rate, divider);
- }
-
- /* Get the maximum parent rate */
- max_prate = clk_hw_round_rate(clk_hw_get_parent(hw), ULONG_MAX);
-
- /* Get the corresponding rounded down divider */
- divider = max_prate / rate;
- divider = _valid_divider(adiv->div.width, divider);
-
- /* Get actual rate of the parent */
- *parent_rate = clk_hw_round_rate(clk_hw_get_parent(hw),
- divider * rate);
-
- return DIV_ROUND_UP_ULL((u64)*parent_rate, divider);
-}
-
-static int audio_divider_set_rate(struct clk_hw *hw,
- unsigned long rate,
- unsigned long parent_rate)
-{
- struct clk_regmap *clk = to_clk_regmap(hw);
- struct meson_clk_audio_div_data *adiv = meson_clk_audio_div_data(clk);
- int val = _get_val(parent_rate, rate);
-
- meson_parm_write(clk->map, &adiv->div, val);
-
- return 0;
-}
-
-const struct clk_ops meson_clk_audio_divider_ro_ops = {
- .recalc_rate = audio_divider_recalc_rate,
- .round_rate = audio_divider_round_rate,
-};
-
-const struct clk_ops meson_clk_audio_divider_ops = {
- .recalc_rate = audio_divider_recalc_rate,
- .round_rate = audio_divider_round_rate,
- .set_rate = audio_divider_set_rate,
-};
diff --git a/drivers/clk/meson/clkc.h b/drivers/clk/meson/clkc.h
index 2fb084330ee9..48db02424f02 100644
--- a/drivers/clk/meson/clkc.h
+++ b/drivers/clk/meson/clkc.h
@@ -91,11 +91,6 @@ struct meson_clk_mpll_data {
#define CLK_MESON_MPLL_ROUND_CLOSEST BIT(0)
-struct meson_clk_audio_div_data {
- struct parm div;
- u8 flags;
-};
-
#define MESON_GATE(_name, _reg, _bit) \
struct clk_regmap _name = { \
.data = &(struct clk_regmap_gate_data){ \
@@ -117,7 +112,5 @@ extern const struct clk_ops meson_clk_pll_ops;
extern const struct clk_ops meson_clk_cpu_ops;
extern const struct clk_ops meson_clk_mpll_ro_ops;
extern const struct clk_ops meson_clk_mpll_ops;
-extern const struct clk_ops meson_clk_audio_divider_ro_ops;
-extern const struct clk_ops meson_clk_audio_divider_ops;
#endif /* __CLKC_H */
--
2.14.3
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