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133 lines
3.8 KiB
Diff
133 lines
3.8 KiB
Diff
From 2beaa601c849e72683a2dd0fe6fd77763f19f051 Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime.ripard@free-electrons.com>
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Date: Fri, 30 Sep 2016 22:16:51 +0200
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Subject: clk: sunxi-ng: Implement minimum for multipliers
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Allow the CCU drivers to specify a multiplier for their clocks.
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Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Acked-by: Chen-Yu Tsai <wens@csie.org>
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---
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drivers/clk/sunxi-ng/ccu_mult.c | 2 +-
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drivers/clk/sunxi-ng/ccu_mult.h | 13 +++++++++----
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drivers/clk/sunxi-ng/ccu_nk.c | 8 ++++----
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drivers/clk/sunxi-ng/ccu_nkm.c | 8 ++++----
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drivers/clk/sunxi-ng/ccu_nkmp.c | 4 ++--
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drivers/clk/sunxi-ng/ccu_nm.c | 2 +-
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6 files changed, 21 insertions(+), 16 deletions(-)
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--- a/drivers/clk/sunxi-ng/ccu_mult.c
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+++ b/drivers/clk/sunxi-ng/ccu_mult.c
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@@ -105,7 +105,7 @@ static int ccu_mult_set_rate(struct clk_
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ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1,
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&parent_rate);
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- _cm.min = 1;
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+ _cm.min = cm->mult.min;
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_cm.max = 1 << cm->mult.width;
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ccu_mult_find_best(parent_rate, rate, &_cm);
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--- a/drivers/clk/sunxi-ng/ccu_mult.h
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+++ b/drivers/clk/sunxi-ng/ccu_mult.h
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@@ -7,14 +7,19 @@
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struct ccu_mult_internal {
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u8 shift;
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u8 width;
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+ u8 min;
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};
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-#define _SUNXI_CCU_MULT(_shift, _width) \
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- { \
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- .shift = _shift, \
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- .width = _width, \
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+#define _SUNXI_CCU_MULT_MIN(_shift, _width, _min) \
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+ { \
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+ .shift = _shift, \
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+ .width = _width, \
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+ .min = _min, \
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}
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+#define _SUNXI_CCU_MULT(_shift, _width) \
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+ _SUNXI_CCU_MULT_MIN(_shift, _width, 1)
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+
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struct ccu_mult {
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u32 enable;
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--- a/drivers/clk/sunxi-ng/ccu_nk.c
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+++ b/drivers/clk/sunxi-ng/ccu_nk.c
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@@ -97,9 +97,9 @@ static long ccu_nk_round_rate(struct clk
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if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
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rate *= nk->fixed_post_div;
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- _nk.min_n = 1;
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+ _nk.min_n = nk->n.min;
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_nk.max_n = 1 << nk->n.width;
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- _nk.min_k = 1;
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+ _nk.min_k = nk->k.min;
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_nk.max_k = 1 << nk->k.width;
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ccu_nk_find_best(*parent_rate, rate, &_nk);
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@@ -122,9 +122,9 @@ static int ccu_nk_set_rate(struct clk_hw
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if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
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rate = rate * nk->fixed_post_div;
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- _nk.min_n = 1;
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+ _nk.min_n = nk->n.min;
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_nk.max_n = 1 << nk->n.width;
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- _nk.min_k = 1;
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+ _nk.min_k = nk->k.min;
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_nk.max_k = 1 << nk->k.width;
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ccu_nk_find_best(parent_rate, rate, &_nk);
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--- a/drivers/clk/sunxi-ng/ccu_nkm.c
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+++ b/drivers/clk/sunxi-ng/ccu_nkm.c
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@@ -100,9 +100,9 @@ static unsigned long ccu_nkm_round_rate(
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struct ccu_nkm *nkm = data;
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struct _ccu_nkm _nkm;
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- _nkm.min_n = 1;
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+ _nkm.min_n = nkm->n.min;
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_nkm.max_n = 1 << nkm->n.width;
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- _nkm.min_k = 1;
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+ _nkm.min_k = nkm->k.min;
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_nkm.max_k = 1 << nkm->k.width;
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_nkm.min_m = 1;
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_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
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@@ -129,9 +129,9 @@ static int ccu_nkm_set_rate(struct clk_h
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unsigned long flags;
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u32 reg;
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- _nkm.min_n = 1;
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+ _nkm.min_n = nkm->n.min;
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_nkm.max_n = 1 << nkm->n.width;
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- _nkm.min_k = 1;
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+ _nkm.min_k = nkm->k.min;
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_nkm.max_k = 1 << nkm->k.width;
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_nkm.min_m = 1;
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_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
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--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
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+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
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@@ -107,9 +107,9 @@ static long ccu_nkmp_round_rate(struct c
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struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
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struct _ccu_nkmp _nkmp;
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- _nkmp.min_n = 1;
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+ _nkmp.min_n = nkmp->n.min;
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_nkmp.max_n = 1 << nkmp->n.width;
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- _nkmp.min_k = 1;
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+ _nkmp.min_k = nkmp->k.min;
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_nkmp.max_k = 1 << nkmp->k.width;
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_nkmp.min_m = 1;
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_nkmp.max_m = nkmp->m.max ?: 1 << nkmp->m.width;
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--- a/drivers/clk/sunxi-ng/ccu_nm.c
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+++ b/drivers/clk/sunxi-ng/ccu_nm.c
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@@ -93,7 +93,7 @@ static long ccu_nm_round_rate(struct clk
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struct ccu_nm *nm = hw_to_ccu_nm(hw);
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struct _ccu_nm _nm;
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- _nm.min_n = 1;
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+ _nm.min_n = nm->n.min;
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_nm.max_n = 1 << nm->n.width;
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_nm.min_m = 1;
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_nm.max_m = nm->m.max ?: 1 << nm->m.width;
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