[PATCH 2/15] clk: sunxi-ng: Pass the parent and a pointer to the clocks round rate

Maxime Ripard
2017-03-07T08:56:21Z

The clocks might need to modify their parent clocks. In order to make that
possible, give them access to the parent clock being evaluated, and to a
pointer to the parent rate so that they can modify it if needed.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
drivers/clk/sunxi-ng/ccu_div.c | 7 ++++---
drivers/clk/sunxi-ng/ccu_mp.c | 7 ++++---
drivers/clk/sunxi-ng/ccu_mult.c | 11 ++++++-----
drivers/clk/sunxi-ng/ccu_mux.c | 8 +++++---
drivers/clk/sunxi-ng/ccu_mux.h | 3 ++-
drivers/clk/sunxi-ng/ccu_nkm.c | 7 ++++---
6 files changed, 25 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/sunxi-ng/ccu_div.c b/drivers/clk/sunxi-ng/ccu_div.c
index 92855c2b30bb..7f8b06e38636 100644
--- a/drivers/clk/sunxi-ng/ccu_div.c
+++ b/drivers/clk/sunxi-ng/ccu_div.c
@@ -14,7 +14,8 @@
#include "ccu_div.h"

static unsigned long ccu_div_round_rate(struct ccu_mux_internal *mux,
- unsigned long parent_rate,
+ struct clk_hw *parent,
+ unsigned long *parent_rate,
unsigned long rate,
void *data)
{
@@ -26,10 +27,10 @@ static unsigned long ccu_div_round_rate(struct ccu_mux_internal *mux,
* several parents, while we might be called to evaluate
* several different parents.
*/
- val = divider_get_val(rate, parent_rate, cd->div.table, cd->div.width,
+ val = divider_get_val(rate, *parent_rate, cd->div.table, cd->div.width,
cd->div.flags);

- return divider_recalc_rate(&cd->common.hw, parent_rate, val,
+ return divider_recalc_rate(&cd->common.hw, *parent_rate, val,
cd->div.table, cd->div.flags);
}

diff --git a/drivers/clk/sunxi-ng/ccu_mp.c b/drivers/clk/sunxi-ng/ccu_mp.c
index b583f186a804..de02e6c386d8 100644
--- a/drivers/clk/sunxi-ng/ccu_mp.c
+++ b/drivers/clk/sunxi-ng/ccu_mp.c
@@ -41,7 +41,8 @@ static void ccu_mp_find_best(unsigned long parent, unsigned long rate,
}

static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
- unsigned long parent_rate,
+ struct clk_hw *hw,
+ unsigned long *parent_rate,
unsigned long rate,
void *data)
{
@@ -52,9 +53,9 @@ static unsigned long ccu_mp_round_rate(struct ccu_mux_internal *mux,
max_m = cmp->m.max ?: 1 << cmp->m.width;
max_p = cmp->p.max ?: 1 << ((1 << cmp->p.width) - 1);

- ccu_mp_find_best(parent_rate, rate, max_m, max_p, &m, &p);
+ ccu_mp_find_best(*parent_rate, rate, max_m, max_p, &m, &p);

- return parent_rate / p / m;
+ return *parent_rate / p / m;
}

static void ccu_mp_disable(struct clk_hw *hw)
diff --git a/drivers/clk/sunxi-ng/ccu_mult.c b/drivers/clk/sunxi-ng/ccu_mult.c
index 8724c01171b1..76d17162366f 100644
--- a/drivers/clk/sunxi-ng/ccu_mult.c
+++ b/drivers/clk/sunxi-ng/ccu_mult.c
@@ -33,9 +33,10 @@ static void ccu_mult_find_best(unsigned long parent, unsigned long rate,
}

static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux,
- unsigned long parent_rate,
- unsigned long rate,
- void *data)
+ struct clk_hw *parent,
+ unsigned long *parent_rate,
+ unsigned long rate,
+ void *data)
{
struct ccu_mult *cm = data;
struct _ccu_mult _cm;
@@ -47,9 +48,9 @@ static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux,
else
_cm.max = (1 << cm->mult.width) + cm->mult.offset - 1;

- ccu_mult_find_best(parent_rate, rate, &_cm);
+ ccu_mult_find_best(*parent_rate, rate, &_cm);

- return parent_rate * _cm.mult;
+ return *parent_rate * _cm.mult;
}

static void ccu_mult_disable(struct clk_hw *hw)
diff --git a/drivers/clk/sunxi-ng/ccu_mux.c b/drivers/clk/sunxi-ng/ccu_mux.c
index c6bb1f523232..bae735e252b6 100644
--- a/drivers/clk/sunxi-ng/ccu_mux.c
+++ b/drivers/clk/sunxi-ng/ccu_mux.c
@@ -61,7 +61,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
struct ccu_mux_internal *cm,
struct clk_rate_request *req,
unsigned long (*round)(struct ccu_mux_internal *,
- unsigned long,
+ struct clk_hw *,
+ unsigned long *,
unsigned long,
void *),
void *data)
@@ -80,7 +81,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
ccu_mux_helper_adjust_parent_for_prediv(common, cm, -1,
&adj_parent_rate);

- best_rate = round(cm, adj_parent_rate, req->rate, data);
+ best_rate = round(cm, best_parent, &adj_parent_rate,
+ req->rate, data);

goto out;
}
@@ -109,7 +111,7 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
ccu_mux_helper_adjust_parent_for_prediv(common, cm, i,
&adj_parent_rate);

- tmp_rate = round(cm, adj_parent_rate, req->rate, data);
+ tmp_rate = round(cm, parent, &adj_parent_rate, req->rate, data);
if (tmp_rate == req->rate) {
best_parent = parent;
best_parent_rate = parent_rate;
diff --git a/drivers/clk/sunxi-ng/ccu_mux.h b/drivers/clk/sunxi-ng/ccu_mux.h
index 47aba3a48245..4be56eee2bfd 100644
--- a/drivers/clk/sunxi-ng/ccu_mux.h
+++ b/drivers/clk/sunxi-ng/ccu_mux.h
@@ -86,7 +86,8 @@ int ccu_mux_helper_determine_rate(struct ccu_common *common,
struct ccu_mux_internal *cm,
struct clk_rate_request *req,
unsigned long (*round)(struct ccu_mux_internal *,
- unsigned long,
+ struct clk_hw *,
+ unsigned long *,
unsigned long,
void *),
void *data);
diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c
index 71f81e95a061..c5e010eb5991 100644
--- a/drivers/clk/sunxi-ng/ccu_nkm.c
+++ b/drivers/clk/sunxi-ng/ccu_nkm.c
@@ -102,7 +102,8 @@ static unsigned long ccu_nkm_recalc_rate(struct clk_hw *hw,
}

static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux,
- unsigned long parent_rate,
+ struct clk_hw *hw,
+ unsigned long *parent_rate,
unsigned long rate,
void *data)
{
@@ -116,9 +117,9 @@ static unsigned long ccu_nkm_round_rate(struct ccu_mux_internal *mux,
_nkm.min_m = 1;
_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;

- ccu_nkm_find_best(parent_rate, rate, &_nkm);
+ ccu_nkm_find_best(*parent_rate, rate, &_nkm);

- return parent_rate * _nkm.n * _nkm.k / _nkm.m;
+ return *parent_rate * _nkm.n * _nkm.k / _nkm.m;
}

static int ccu_nkm_determine_rate(struct clk_hw *hw,
--
git-series 0.8.11