diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch b/target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch new file mode 100644 index 0000000000..4b91892b81 --- /dev/null +++ b/target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch @@ -0,0 +1,182 @@ +From b8302c7267dedaeeb1bf38143f099defbf16dce8 Mon Sep 17 00:00:00 2001 +From: Maxime Ripard <maxime.ripard@free-electrons.com> +Date: Thu, 29 Sep 2016 23:50:21 +0200 +Subject: clk: sunxi-ng: Finish to convert to structures for arguments + +Some clocks still use an explicit list of arguments, which make it a bit +more tedious to add new parameters. + +Convert those over to a structure pointer argument to add as many +arguments as possible without having to many noise in our patches, or a +very long list of arguments. + +Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> +Acked-by: Chen-Yu Tsai <wens@csie.org> +--- + drivers/clk/sunxi-ng/ccu_mult.c | 28 ++++++++++++++++++++-------- + drivers/clk/sunxi-ng/ccu_nk.c | 39 ++++++++++++++++++++++----------------- + 2 files changed, 42 insertions(+), 25 deletions(-) + +--- a/drivers/clk/sunxi-ng/ccu_mult.c ++++ b/drivers/clk/sunxi-ng/ccu_mult.c +@@ -13,10 +13,20 @@ + #include "ccu_gate.h" + #include "ccu_mult.h" + ++struct _ccu_mult { ++ unsigned long mult, max; ++}; ++ + static void ccu_mult_find_best(unsigned long parent, unsigned long rate, +- unsigned int max_n, unsigned int *n) ++ struct _ccu_mult *mult) + { +- *n = rate / parent; ++ int _mult; ++ ++ _mult = rate / parent; ++ if (_mult > mult->max) ++ _mult = mult->max; ++ ++ mult->mult = _mult; + } + + static unsigned long ccu_mult_round_rate(struct ccu_mux_internal *mux, +@@ -25,11 +35,12 @@ static unsigned long ccu_mult_round_rate + void *data) + { + struct ccu_mult *cm = data; +- unsigned int n; ++ struct _ccu_mult _cm; + +- ccu_mult_find_best(parent_rate, rate, 1 << cm->mult.width, &n); ++ _cm.max = 1 << cm->mult.width; ++ ccu_mult_find_best(parent_rate, rate, &_cm); + +- return parent_rate * n; ++ return parent_rate * _cm.mult; + } + + static void ccu_mult_disable(struct clk_hw *hw) +@@ -83,21 +94,22 @@ static int ccu_mult_set_rate(struct clk_ + unsigned long parent_rate) + { + struct ccu_mult *cm = hw_to_ccu_mult(hw); ++ struct _ccu_mult _cm; + unsigned long flags; +- unsigned int n; + u32 reg; + + ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1, + &parent_rate); + +- ccu_mult_find_best(parent_rate, rate, 1 << cm->mult.width, &n); ++ _cm.max = 1 << cm->mult.width; ++ ccu_mult_find_best(parent_rate, rate, &_cm); + + spin_lock_irqsave(cm->common.lock, flags); + + reg = readl(cm->common.base + cm->common.reg); + reg &= ~GENMASK(cm->mult.width + cm->mult.shift - 1, cm->mult.shift); + +- writel(reg | ((n - 1) << cm->mult.shift), ++ writel(reg | ((_cm.mult - 1) << cm->mult.shift), + cm->common.base + cm->common.reg); + + spin_unlock_irqrestore(cm->common.lock, flags); +--- a/drivers/clk/sunxi-ng/ccu_nk.c ++++ b/drivers/clk/sunxi-ng/ccu_nk.c +@@ -9,21 +9,24 @@ + */ + + #include <linux/clk-provider.h> +-#include <linux/rational.h> + + #include "ccu_gate.h" + #include "ccu_nk.h" + ++struct _ccu_nk { ++ unsigned long n, max_n; ++ unsigned long k, max_k; ++}; ++ + static void ccu_nk_find_best(unsigned long parent, unsigned long rate, +- unsigned int max_n, unsigned int max_k, +- unsigned int *n, unsigned int *k) ++ struct _ccu_nk *nk) + { + unsigned long best_rate = 0; + unsigned int best_k = 0, best_n = 0; + unsigned int _k, _n; + +- for (_k = 1; _k <= max_k; _k++) { +- for (_n = 1; _n <= max_n; _n++) { ++ for (_k = 1; _k <= nk->max_k; _k++) { ++ for (_n = 1; _n <= nk->max_n; _n++) { + unsigned long tmp_rate = parent * _n * _k; + + if (tmp_rate > rate) +@@ -37,8 +40,8 @@ static void ccu_nk_find_best(unsigned lo + } + } + +- *k = best_k; +- *n = best_n; ++ nk->k = best_k; ++ nk->n = best_n; + } + + static void ccu_nk_disable(struct clk_hw *hw) +@@ -89,16 +92,17 @@ static long ccu_nk_round_rate(struct clk + unsigned long *parent_rate) + { + struct ccu_nk *nk = hw_to_ccu_nk(hw); +- unsigned int n, k; ++ struct _ccu_nk _nk; + + if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV) + rate *= nk->fixed_post_div; + +- ccu_nk_find_best(*parent_rate, rate, +- 1 << nk->n.width, 1 << nk->k.width, +- &n, &k); ++ _nk.max_n = 1 << nk->n.width; ++ _nk.max_k = 1 << nk->k.width; ++ ++ ccu_nk_find_best(*parent_rate, rate, &_nk); ++ rate = *parent_rate * _nk.n * _nk.k; + +- rate = *parent_rate * n * k; + if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV) + rate = rate / nk->fixed_post_div; + +@@ -110,15 +114,16 @@ static int ccu_nk_set_rate(struct clk_hw + { + struct ccu_nk *nk = hw_to_ccu_nk(hw); + unsigned long flags; +- unsigned int n, k; ++ struct _ccu_nk _nk; + u32 reg; + + if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV) + rate = rate * nk->fixed_post_div; + +- ccu_nk_find_best(parent_rate, rate, +- 1 << nk->n.width, 1 << nk->k.width, +- &n, &k); ++ _nk.max_n = 1 << nk->n.width; ++ _nk.max_k = 1 << nk->k.width; ++ ++ ccu_nk_find_best(parent_rate, rate, &_nk); + + spin_lock_irqsave(nk->common.lock, flags); + +@@ -126,7 +131,7 @@ static int ccu_nk_set_rate(struct clk_hw + reg &= ~GENMASK(nk->n.width + nk->n.shift - 1, nk->n.shift); + reg &= ~GENMASK(nk->k.width + nk->k.shift - 1, nk->k.shift); + +- writel(reg | ((k - 1) << nk->k.shift) | ((n - 1) << nk->n.shift), ++ writel(reg | ((_nk.k - 1) << nk->k.shift) | ((_nk.n - 1) << nk->n.shift), + nk->common.base + nk->common.reg); + + spin_unlock_irqrestore(nk->common.lock, flags); |