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sunxi: Backport patches needed for A64

Browse Source 
This backports multiple patches from kernel 4.10 which are adding
missing support for the A64 and the pine64 board. These are the device
tree files, the pinctlk and the clock driver.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
v19.07.3_mercusys_ac12_duma
Hauke Mehrtens 7 years ago
parent e080a7ce07
commit 34a422794d
25 changed files with 4665 additions and 0 deletions
Show Stats Download Patch File Download Diff File

1
target/linux/sunxi/config-4.9
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@ -486,6 +486,7 @@ CONFIG_STMMAC_PLATFORM=y
CONFIG_STRICT_DEVMEM=y
# CONFIG_SUN4I_EMAC is not set
CONFIG_SUN4I_TIMER=y
# CONFIG_SUN50I_A64_CCU is not set
CONFIG_SUN5I_HSTIMER=y
CONFIG_SUN6I_A31_CCU=y
CONFIG_SUN8I_A23_CCU=y

39
target/linux/sunxi/patches-4.9/0001-arm64-sunxi-always-enable-reset-controller.patch
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@ -0,0 +1,39 @@
From 900a9020af7a023f9b64c919fddf8a7486108962 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 18 Apr 2017 15:55:51 +0200
Subject: arm64: sunxi: always enable reset controller
The sunxi clk driver causes a link error when the reset controller
subsystem is disabled:
drivers/clk/built-in.o: In function `sun4i_ve_clk_setup':
:(.init.text+0xd040): undefined reference to `reset_controller_register'
drivers/clk/built-in.o: In function `sun4i_a10_display_init':
:(.init.text+0xe5e0): undefined reference to `reset_controller_register'
drivers/clk/built-in.o: In function `sunxi_usb_clk_setup':
:(.init.text+0x10074): undefined reference to `reset_controller_register'
We already force it to be enabled on arm32 and some other arm64 platforms,
but not on arm64/sunxi. This adds the respective Kconfig statements to
also select it here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
arch/arm64/Kconfig.platforms | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -2,9 +2,11 @@ menu "Platform selection"
config ARCH_SUNXI
bool "Allwinner sunxi 64-bit SoC Family"
+ select ARCH_HAS_RESET_CONTROLLER
select GENERIC_IRQ_CHIP
select PINCTRL
select PINCTRL_SUN50I_A64
+ select RESET_CONTROLLER
help
This enables support for Allwinner sunxi based SoCs like the A64.

239
target/linux/sunxi/patches-4.9/0002-clk-sunxi-ng-Rename-the-internal-structures.patch
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@ -0,0 +1,239 @@
From a501a14e38cc4d8e9c91bb508cdca7032d53f717 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Fri, 30 Sep 2016 10:05:32 +0200
Subject: clk: sunxi-ng: Rename the internal structures
Rename the structures meant to be embedded in other structures to make it
consistent with the mux structure name
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/clk/sunxi-ng/ccu_div.h | 6 +++---
drivers/clk/sunxi-ng/ccu_frac.c | 12 ++++++------
drivers/clk/sunxi-ng/ccu_frac.h | 14 +++++++-------
drivers/clk/sunxi-ng/ccu_mp.h | 4 ++--
drivers/clk/sunxi-ng/ccu_mult.h | 4 ++--
drivers/clk/sunxi-ng/ccu_nk.h | 4 ++--
drivers/clk/sunxi-ng/ccu_nkm.h | 6 +++---
drivers/clk/sunxi-ng/ccu_nkmp.h | 8 ++++----
drivers/clk/sunxi-ng/ccu_nm.h | 6 +++---
9 files changed, 32 insertions(+), 32 deletions(-)
--- a/drivers/clk/sunxi-ng/ccu_div.h
+++ b/drivers/clk/sunxi-ng/ccu_div.h
@@ -20,7 +20,7 @@
#include "ccu_mux.h"
/**
- * struct _ccu_div - Internal divider description
+ * struct ccu_div_internal - Internal divider description
* @shift: Bit offset of the divider in its register
* @width: Width of the divider field in its register
* @max: Maximum value allowed for that divider. This is the
@@ -36,7 +36,7 @@
* It is basically a wrapper around the clk_divider functions
* arguments.
*/
-struct _ccu_div {
+struct ccu_div_internal {
u8 shift;
u8 width;
@@ -78,7 +78,7 @@ struct _ccu_div {
struct ccu_div {
u32 enable;
- struct _ccu_div div;
+ struct ccu_div_internal div;
struct ccu_mux_internal mux;
struct ccu_common common;
};
--- a/drivers/clk/sunxi-ng/ccu_frac.c
+++ b/drivers/clk/sunxi-ng/ccu_frac.c
@@ -14,7 +14,7 @@
#include "ccu_frac.h"
bool ccu_frac_helper_is_enabled(struct ccu_common *common,
- struct _ccu_frac *cf)
+ struct ccu_frac_internal *cf)
{
if (!(common->features & CCU_FEATURE_FRACTIONAL))
return false;
@@ -23,7 +23,7 @@ bool ccu_frac_helper_is_enabled(struct c
}
void ccu_frac_helper_enable(struct ccu_common *common,
- struct _ccu_frac *cf)
+ struct ccu_frac_internal *cf)
{
unsigned long flags;
u32 reg;
@@ -38,7 +38,7 @@ void ccu_frac_helper_enable(struct ccu_c
}
void ccu_frac_helper_disable(struct ccu_common *common,
- struct _ccu_frac *cf)
+ struct ccu_frac_internal *cf)
{
unsigned long flags;
u32 reg;
@@ -53,7 +53,7 @@ void ccu_frac_helper_disable(struct ccu_
}
bool ccu_frac_helper_has_rate(struct ccu_common *common,
- struct _ccu_frac *cf,
+ struct ccu_frac_internal *cf,
unsigned long rate)
{
if (!(common->features & CCU_FEATURE_FRACTIONAL))
@@ -63,7 +63,7 @@ bool ccu_frac_helper_has_rate(struct ccu
}
unsigned long ccu_frac_helper_read_rate(struct ccu_common *common,
- struct _ccu_frac *cf)
+ struct ccu_frac_internal *cf)
{
u32 reg;
@@ -84,7 +84,7 @@ unsigned long ccu_frac_helper_read_rate(
}
int ccu_frac_helper_set_rate(struct ccu_common *common,
- struct _ccu_frac *cf,
+ struct ccu_frac_internal *cf,
unsigned long rate)
{
unsigned long flags;
--- a/drivers/clk/sunxi-ng/ccu_frac.h
+++ b/drivers/clk/sunxi-ng/ccu_frac.h
@@ -18,7 +18,7 @@
#include "ccu_common.h"
-struct _ccu_frac {
+struct ccu_frac_internal {
u32 enable;
u32 select;
@@ -33,21 +33,21 @@ struct _ccu_frac {
}
bool ccu_frac_helper_is_enabled(struct ccu_common *common,
- struct _ccu_frac *cf);
+ struct ccu_frac_internal *cf);
void ccu_frac_helper_enable(struct ccu_common *common,
- struct _ccu_frac *cf);
+ struct ccu_frac_internal *cf);
void ccu_frac_helper_disable(struct ccu_common *common,
- struct _ccu_frac *cf);
+ struct ccu_frac_internal *cf);
bool ccu_frac_helper_has_rate(struct ccu_common *common,
- struct _ccu_frac *cf,
+ struct ccu_frac_internal *cf,
unsigned long rate);
unsigned long ccu_frac_helper_read_rate(struct ccu_common *common,
- struct _ccu_frac *cf);
+ struct ccu_frac_internal *cf);
int ccu_frac_helper_set_rate(struct ccu_common *common,
- struct _ccu_frac *cf,
+ struct ccu_frac_internal *cf,
unsigned long rate);
#endif /* _CCU_FRAC_H_ */
--- a/drivers/clk/sunxi-ng/ccu_mp.h
+++ b/drivers/clk/sunxi-ng/ccu_mp.h
@@ -29,8 +29,8 @@
struct ccu_mp {
u32 enable;
- struct _ccu_div m;
- struct _ccu_div p;
+ struct ccu_div_internal m;
+ struct ccu_div_internal p;
struct ccu_mux_internal mux;
struct ccu_common common;
};
--- a/drivers/clk/sunxi-ng/ccu_mult.h
+++ b/drivers/clk/sunxi-ng/ccu_mult.h
@@ -4,7 +4,7 @@
#include "ccu_common.h"
#include "ccu_mux.h"
-struct _ccu_mult {
+struct ccu_mult_internal {
u8 shift;
u8 width;
};
@@ -18,7 +18,7 @@ struct _ccu_mult {
struct ccu_mult {
u32 enable;
- struct _ccu_mult mult;
+ struct ccu_mult_internal mult;
struct ccu_mux_internal mux;
struct ccu_common common;
};
--- a/drivers/clk/sunxi-ng/ccu_nk.h
+++ b/drivers/clk/sunxi-ng/ccu_nk.h
@@ -30,8 +30,8 @@ struct ccu_nk {
u32 enable;
u32 lock;
- struct _ccu_mult n;
- struct _ccu_mult k;
+ struct ccu_mult_internal n;
+ struct ccu_mult_internal k;
unsigned int fixed_post_div;
--- a/drivers/clk/sunxi-ng/ccu_nkm.h
+++ b/drivers/clk/sunxi-ng/ccu_nkm.h
@@ -29,9 +29,9 @@ struct ccu_nkm {
u32 enable;
u32 lock;
- struct _ccu_mult n;
- struct _ccu_mult k;
- struct _ccu_div m;
+ struct ccu_mult_internal n;
+ struct ccu_mult_internal k;
+ struct ccu_div_internal m;
struct ccu_mux_internal mux;
struct ccu_common common;
--- a/drivers/clk/sunxi-ng/ccu_nkmp.h
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.h
@@ -29,10 +29,10 @@ struct ccu_nkmp {
u32 enable;
u32 lock;
- struct _ccu_mult n;
- struct _ccu_mult k;
- struct _ccu_div m;
- struct _ccu_div p;
+ struct ccu_mult_internal n;
+ struct ccu_mult_internal k;
+ struct ccu_div_internal m;
+ struct ccu_div_internal p;
struct ccu_common common;
};
--- a/drivers/clk/sunxi-ng/ccu_nm.h
+++ b/drivers/clk/sunxi-ng/ccu_nm.h
@@ -30,9 +30,9 @@ struct ccu_nm {
u32 enable;
u32 lock;
- struct _ccu_mult n;
- struct _ccu_div m;
- struct _ccu_frac frac;
+ struct ccu_mult_internal n;
+ struct ccu_div_internal m;
+ struct ccu_frac_internal frac;
struct ccu_common common;
};

239
target/linux/sunxi/patches-4.9/0003-clk-sunxi-ng-Remove-the-use-of-rational-computations.patch
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@ -0,0 +1,239 @@
From ee28648cb2b4d4ab5c2eb8199ea86675fe19016b Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Thu, 29 Sep 2016 22:53:12 +0200
Subject: clk: sunxi-ng: Remove the use of rational computations
While the rational library works great, it doesn't really allow us to add
more constraints, like the minimum.
Remove that in order to be able to deal with the constraints we'll need.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/clk/sunxi-ng/Kconfig | 3 ---
drivers/clk/sunxi-ng/ccu_nkm.c | 31 ++++++++++++-----------
drivers/clk/sunxi-ng/ccu_nkmp.c | 37 ++++++++++++++--------------
drivers/clk/sunxi-ng/ccu_nm.c | 54 +++++++++++++++++++++++++++++++----------
4 files changed, 74 insertions(+), 51 deletions(-)
--- a/drivers/clk/sunxi-ng/Kconfig
+++ b/drivers/clk/sunxi-ng/Kconfig
@@ -35,17 +35,14 @@ config SUNXI_CCU_NK
config SUNXI_CCU_NKM
bool
- select RATIONAL
select SUNXI_CCU_GATE
config SUNXI_CCU_NKMP
bool
- select RATIONAL
select SUNXI_CCU_GATE
config SUNXI_CCU_NM
bool
- select RATIONAL
select SUNXI_CCU_FRAC
select SUNXI_CCU_GATE
--- a/drivers/clk/sunxi-ng/ccu_nkm.c
+++ b/drivers/clk/sunxi-ng/ccu_nkm.c
@@ -9,7 +9,6 @@
*/
#include <linux/clk-provider.h>
-#include <linux/rational.h>
#include "ccu_gate.h"
#include "ccu_nkm.h"
@@ -28,21 +27,21 @@ static void ccu_nkm_find_best(unsigned l
unsigned long _n, _k, _m;
for (_k = 1; _k <= nkm->max_k; _k++) {
- unsigned long tmp_rate;
-
- rational_best_approximation(rate / _k, parent,
- nkm->max_n, nkm->max_m, &_n, &_m);
-
- tmp_rate = parent * _n * _k / _m;
-
- if (tmp_rate > rate)
- continue;
-
- if ((rate - tmp_rate) < (rate - best_rate)) {
- best_rate = tmp_rate;
- best_n = _n;
- best_k = _k;
- best_m = _m;
+ for (_n = 1; _n <= nkm->max_n; _n++) {
+ for (_m = 1; _n <= nkm->max_m; _m++) {
+ unsigned long tmp_rate;
+
+ tmp_rate = parent * _n * _k / _m;
+
+ if (tmp_rate > rate)
+ continue;
+ if ((rate - tmp_rate) < (rate - best_rate)) {
+ best_rate = tmp_rate;
+ best_n = _n;
+ best_k = _k;
+ best_m = _m;
+ }
+ }
}
}
--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
@@ -9,7 +9,6 @@
*/
#include <linux/clk-provider.h>
-#include <linux/rational.h>
#include "ccu_gate.h"
#include "ccu_nkmp.h"
@@ -29,24 +28,24 @@ static void ccu_nkmp_find_best(unsigned
unsigned long _n, _k, _m, _p;
for (_k = 1; _k <= nkmp->max_k; _k++) {
- for (_p = 1; _p <= nkmp->max_p; _p <<= 1) {
- unsigned long tmp_rate;
-
- rational_best_approximation(rate / _k, parent / _p,
- nkmp->max_n, nkmp->max_m,
- &_n, &_m);
-
- tmp_rate = parent * _n * _k / (_m * _p);
-
- if (tmp_rate > rate)
- continue;
-
- if ((rate - tmp_rate) < (rate - best_rate)) {
- best_rate = tmp_rate;
- best_n = _n;
- best_k = _k;
- best_m = _m;
- best_p = _p;
+ for (_n = 1; _n <= nkmp->max_n; _n++) {
+ for (_m = 1; _n <= nkmp->max_m; _m++) {
+ for (_p = 1; _p <= nkmp->max_p; _p <<= 1) {
+ unsigned long tmp_rate;
+
+ tmp_rate = parent * _n * _k / (_m * _p);
+
+ if (tmp_rate > rate)
+ continue;
+
+ if ((rate - tmp_rate) < (rate - best_rate)) {
+ best_rate = tmp_rate;
+ best_n = _n;
+ best_k = _k;
+ best_m = _m;
+ best_p = _p;
+ }
+ }
}
}
}
--- a/drivers/clk/sunxi-ng/ccu_nm.c
+++ b/drivers/clk/sunxi-ng/ccu_nm.c
@@ -9,12 +9,42 @@
*/
#include <linux/clk-provider.h>
-#include <linux/rational.h>
#include "ccu_frac.h"
#include "ccu_gate.h"
#include "ccu_nm.h"
+struct _ccu_nm {
+ unsigned long n, max_n;
+ unsigned long m, max_m;
+};
+
+static void ccu_nm_find_best(unsigned long parent, unsigned long rate,
+ struct _ccu_nm *nm)
+{
+ unsigned long best_rate = 0;
+ unsigned long best_n = 0, best_m = 0;
+ unsigned long _n, _m;
+
+ for (_n = 1; _n <= nm->max_n; _n++) {
+ for (_m = 1; _n <= nm->max_m; _m++) {
+ unsigned long tmp_rate = parent * _n / _m;
+
+ if (tmp_rate > rate)
+ continue;
+
+ if ((rate - tmp_rate) < (rate - best_rate)) {
+ best_rate = tmp_rate;
+ best_n = _n;
+ best_m = _m;
+ }
+ }
+ }
+
+ nm->n = best_n;
+ nm->m = best_m;
+}
+
static void ccu_nm_disable(struct clk_hw *hw)
{
struct ccu_nm *nm = hw_to_ccu_nm(hw);
@@ -61,24 +91,22 @@ static long ccu_nm_round_rate(struct clk
unsigned long *parent_rate)
{
struct ccu_nm *nm = hw_to_ccu_nm(hw);
- unsigned long max_n, max_m;
- unsigned long n, m;
+ struct _ccu_nm _nm;
- max_n = 1 << nm->n.width;
- max_m = nm->m.max ?: 1 << nm->m.width;
+ _nm.max_n = 1 << nm->n.width;
+ _nm.max_m = nm->m.max ?: 1 << nm->m.width;
- rational_best_approximation(rate, *parent_rate, max_n, max_m, &n, &m);
+ ccu_nm_find_best(*parent_rate, rate, &_nm);
- return *parent_rate * n / m;
+ return *parent_rate * _nm.n / _nm.m;
}
static int ccu_nm_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct ccu_nm *nm = hw_to_ccu_nm(hw);
+ struct _ccu_nm _nm;
unsigned long flags;
- unsigned long max_n, max_m;
- unsigned long n, m;
u32 reg;
if (ccu_frac_helper_has_rate(&nm->common, &nm->frac, rate))
@@ -86,10 +114,10 @@ static int ccu_nm_set_rate(struct clk_hw
else
ccu_frac_helper_disable(&nm->common, &nm->frac);
- max_n = 1 << nm->n.width;
- max_m = nm->m.max ?: 1 << nm->m.width;
+ _nm.max_n = 1 << nm->n.width;
+ _nm.max_m = nm->m.max ?: 1 << nm->m.width;
- rational_best_approximation(rate, parent_rate, max_n, max_m, &n, &m);
+ ccu_nm_find_best(parent_rate, rate, &_nm);
spin_lock_irqsave(nm->common.lock, flags);
@@ -97,7 +125,7 @@ static int ccu_nm_set_rate(struct clk_hw
reg &= ~GENMASK(nm->n.width + nm->n.shift - 1, nm->n.shift);
reg &= ~GENMASK(nm->m.width + nm->m.shift - 1, nm->m.shift);
- writel(reg | ((m - 1) << nm->m.shift) | ((n - 1) << nm->n.shift),
+ writel(reg | ((_nm.m - 1) << nm->m.shift) | ((_nm.n - 1) << nm->n.shift),
nm->common.base + nm->common.reg);
spin_unlock_irqrestore(nm->common.lock, flags);

182
target/linux/sunxi/patches-4.9/0004-clk-sunxi-ng-Finish-to-convert-to-structures-for-arg.patch
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@ -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);

256
target/linux/sunxi/patches-4.9/0005-clk-sunxi-ng-Add-minimums-for-all-the-relevant-struc.patch
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From 6e0d50daa97f4bf9706e343b4f71171e88921209 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Thu, 29 Sep 2016 22:57:26 +0200
Subject: clk: sunxi-ng: Add minimums for all the relevant structures and
clocks
Modify the current clocks we have to be able to specify the minimum for
each clocks we support, just like we support the max.
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 | 7 ++++++-
drivers/clk/sunxi-ng/ccu_nk.c | 12 ++++++++----
drivers/clk/sunxi-ng/ccu_nkm.c | 18 ++++++++++++------
drivers/clk/sunxi-ng/ccu_nkmp.c | 24 ++++++++++++++++--------
drivers/clk/sunxi-ng/ccu_nm.c | 12 ++++++++----
5 files changed, 50 insertions(+), 23 deletions(-)
--- a/drivers/clk/sunxi-ng/ccu_mult.c
+++ b/drivers/clk/sunxi-ng/ccu_mult.c
@@ -14,7 +14,7 @@
#include "ccu_mult.h"
struct _ccu_mult {
- unsigned long mult, max;
+ unsigned long mult, min, max;
};
static void ccu_mult_find_best(unsigned long parent, unsigned long rate,
@@ -23,6 +23,9 @@ static void ccu_mult_find_best(unsigned
int _mult;
_mult = rate / parent;
+ if (_mult < mult->min)
+ _mult = mult->min;
+
if (_mult > mult->max)
_mult = mult->max;
@@ -37,6 +40,7 @@ static unsigned long ccu_mult_round_rate
struct ccu_mult *cm = data;
struct _ccu_mult _cm;
+ _cm.min = 1;
_cm.max = 1 << cm->mult.width;
ccu_mult_find_best(parent_rate, rate, &_cm);
@@ -101,6 +105,7 @@ static int ccu_mult_set_rate(struct clk_
ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1,
&parent_rate);
+ _cm.min = 1;
_cm.max = 1 << cm->mult.width;
ccu_mult_find_best(parent_rate, rate, &_cm);
--- a/drivers/clk/sunxi-ng/ccu_nk.c
+++ b/drivers/clk/sunxi-ng/ccu_nk.c
@@ -14,8 +14,8 @@
#include "ccu_nk.h"
struct _ccu_nk {
- unsigned long n, max_n;
- unsigned long k, max_k;
+ unsigned long n, min_n, max_n;
+ unsigned long k, min_k, max_k;
};
static void ccu_nk_find_best(unsigned long parent, unsigned long rate,
@@ -25,8 +25,8 @@ static void ccu_nk_find_best(unsigned lo
unsigned int best_k = 0, best_n = 0;
unsigned int _k, _n;
- for (_k = 1; _k <= nk->max_k; _k++) {
- for (_n = 1; _n <= nk->max_n; _n++) {
+ for (_k = nk->min_k; _k <= nk->max_k; _k++) {
+ for (_n = nk->min_n; _n <= nk->max_n; _n++) {
unsigned long tmp_rate = parent * _n * _k;
if (tmp_rate > rate)
@@ -97,7 +97,9 @@ static long ccu_nk_round_rate(struct clk
if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate *= nk->fixed_post_div;
+ _nk.min_n = 1;
_nk.max_n = 1 << nk->n.width;
+ _nk.min_k = 1;
_nk.max_k = 1 << nk->k.width;
ccu_nk_find_best(*parent_rate, rate, &_nk);
@@ -120,7 +122,9 @@ static int ccu_nk_set_rate(struct clk_hw
if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate = rate * nk->fixed_post_div;
+ _nk.min_n = 1;
_nk.max_n = 1 << nk->n.width;
+ _nk.min_k = 1;
_nk.max_k = 1 << nk->k.width;
ccu_nk_find_best(parent_rate, rate, &_nk);
--- a/drivers/clk/sunxi-ng/ccu_nkm.c
+++ b/drivers/clk/sunxi-ng/ccu_nkm.c
@@ -14,9 +14,9 @@
#include "ccu_nkm.h"
struct _ccu_nkm {
- unsigned long n, max_n;
- unsigned long k, max_k;
- unsigned long m, max_m;
+ unsigned long n, min_n, max_n;
+ unsigned long k, min_k, max_k;
+ unsigned long m, min_m, max_m;
};
static void ccu_nkm_find_best(unsigned long parent, unsigned long rate,
@@ -26,9 +26,9 @@ static void ccu_nkm_find_best(unsigned l
unsigned long best_n = 0, best_k = 0, best_m = 0;
unsigned long _n, _k, _m;
- for (_k = 1; _k <= nkm->max_k; _k++) {
- for (_n = 1; _n <= nkm->max_n; _n++) {
- for (_m = 1; _n <= nkm->max_m; _m++) {
+ for (_k = nkm->min_k; _k <= nkm->max_k; _k++) {
+ for (_n = nkm->min_n; _n <= nkm->max_n; _n++) {
+ for (_m = nkm->min_m; _m <= nkm->max_m; _m++) {
unsigned long tmp_rate;
tmp_rate = parent * _n * _k / _m;
@@ -100,8 +100,11 @@ static unsigned long ccu_nkm_round_rate(
struct ccu_nkm *nkm = data;
struct _ccu_nkm _nkm;
+ _nkm.min_n = 1;
_nkm.max_n = 1 << nkm->n.width;
+ _nkm.min_k = 1;
_nkm.max_k = 1 << nkm->k.width;
+ _nkm.min_m = 1;
_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
ccu_nkm_find_best(parent_rate, rate, &_nkm);
@@ -126,8 +129,11 @@ static int ccu_nkm_set_rate(struct clk_h
unsigned long flags;
u32 reg;
+ _nkm.min_n = 1;
_nkm.max_n = 1 << nkm->n.width;
+ _nkm.min_k = 1;
_nkm.max_k = 1 << nkm->k.width;
+ _nkm.min_m = 1;
_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
ccu_nkm_find_best(parent_rate, rate, &_nkm);
--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
@@ -14,10 +14,10 @@
#include "ccu_nkmp.h"
struct _ccu_nkmp {
- unsigned long n, max_n;
- unsigned long k, max_k;
- unsigned long m, max_m;
- unsigned long p, max_p;
+ unsigned long n, min_n, max_n;
+ unsigned long k, min_k, max_k;
+ unsigned long m, min_m, max_m;
+ unsigned long p, min_p, max_p;
};
static void ccu_nkmp_find_best(unsigned long parent, unsigned long rate,
@@ -27,10 +27,10 @@ static void ccu_nkmp_find_best(unsigned
unsigned long best_n = 0, best_k = 0, best_m = 0, best_p = 0;
unsigned long _n, _k, _m, _p;
- for (_k = 1; _k <= nkmp->max_k; _k++) {
- for (_n = 1; _n <= nkmp->max_n; _n++) {
- for (_m = 1; _n <= nkmp->max_m; _m++) {
- for (_p = 1; _p <= nkmp->max_p; _p <<= 1) {
+ for (_k = nkmp->min_k; _k <= nkmp->max_k; _k++) {
+ for (_n = nkmp->min_n; _n <= nkmp->max_n; _n++) {
+ for (_m = nkmp->min_m; _m <= nkmp->max_m; _m++) {
+ for (_p = nkmp->min_p; _p <= nkmp->max_p; _p <<= 1) {
unsigned long tmp_rate;
tmp_rate = parent * _n * _k / (_m * _p);
@@ -107,9 +107,13 @@ static long ccu_nkmp_round_rate(struct c
struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
struct _ccu_nkmp _nkmp;
+ _nkmp.min_n = 1;
_nkmp.max_n = 1 << nkmp->n.width;
+ _nkmp.min_k = 1;
_nkmp.max_k = 1 << nkmp->k.width;
+ _nkmp.min_m = 1;
_nkmp.max_m = nkmp->m.max ?: 1 << nkmp->m.width;
+ _nkmp.min_p = 1;
_nkmp.max_p = nkmp->p.max ?: 1 << ((1 << nkmp->p.width) - 1);
ccu_nkmp_find_best(*parent_rate, rate, &_nkmp);
@@ -125,9 +129,13 @@ static int ccu_nkmp_set_rate(struct clk_
unsigned long flags;
u32 reg;
+ _nkmp.min_n = 1;
_nkmp.max_n = 1 << nkmp->n.width;
+ _nkmp.min_k = 1;
_nkmp.max_k = 1 << nkmp->k.width;
+ _nkmp.min_m = 1;
_nkmp.max_m = nkmp->m.max ?: 1 << nkmp->m.width;
+ _nkmp.min_p = 1;
_nkmp.max_p = nkmp->p.max ?: 1 << ((1 << nkmp->p.width) - 1);
ccu_nkmp_find_best(parent_rate, rate, &_nkmp);
--- a/drivers/clk/sunxi-ng/ccu_nm.c
+++ b/drivers/clk/sunxi-ng/ccu_nm.c
@@ -15,8 +15,8 @@
#include "ccu_nm.h"
struct _ccu_nm {
- unsigned long n, max_n;
- unsigned long m, max_m;
+ unsigned long n, min_n, max_n;
+ unsigned long m, min_m, max_m;
};
static void ccu_nm_find_best(unsigned long parent, unsigned long rate,
@@ -26,8 +26,8 @@ static void ccu_nm_find_best(unsigned lo
unsigned long best_n = 0, best_m = 0;
unsigned long _n, _m;
- for (_n = 1; _n <= nm->max_n; _n++) {
- for (_m = 1; _n <= nm->max_m; _m++) {
+ for (_n = nm->min_n; _n <= nm->max_n; _n++) {
+ for (_m = nm->min_m; _m <= nm->max_m; _m++) {
unsigned long tmp_rate = parent * _n / _m;
if (tmp_rate > rate)
@@ -93,7 +93,9 @@ static long ccu_nm_round_rate(struct clk
struct ccu_nm *nm = hw_to_ccu_nm(hw);
struct _ccu_nm _nm;
+ _nm.min_n = 1;
_nm.max_n = 1 << nm->n.width;
+ _nm.min_m = 1;
_nm.max_m = nm->m.max ?: 1 << nm->m.width;
ccu_nm_find_best(*parent_rate, rate, &_nm);
@@ -114,7 +116,9 @@ static int ccu_nm_set_rate(struct clk_hw
else
ccu_frac_helper_disable(&nm->common, &nm->frac);
+ _nm.min_n = 1;
_nm.max_n = 1 << nm->n.width;
+ _nm.min_m = 1;
_nm.max_m = nm->m.max ?: 1 << nm->m.width;
ccu_nm_find_best(parent_rate, rate, &_nm);

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target/linux/sunxi/patches-4.9/0006-clk-sunxi-ng-Implement-minimum-for-multipliers.patch
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From 2beaa601c849e72683a2dd0fe6fd77763f19f051 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Fri, 30 Sep 2016 22:16:51 +0200
Subject: clk: sunxi-ng: Implement minimum for multipliers
Allow the CCU drivers to specify a multiplier for their clocks.
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 | 2 +-
drivers/clk/sunxi-ng/ccu_mult.h | 13 +++++++++----
drivers/clk/sunxi-ng/ccu_nk.c | 8 ++++----
drivers/clk/sunxi-ng/ccu_nkm.c | 8 ++++----
drivers/clk/sunxi-ng/ccu_nkmp.c | 4 ++--
drivers/clk/sunxi-ng/ccu_nm.c | 2 +-
6 files changed, 21 insertions(+), 16 deletions(-)
--- a/drivers/clk/sunxi-ng/ccu_mult.c
+++ b/drivers/clk/sunxi-ng/ccu_mult.c
@@ -105,7 +105,7 @@ static int ccu_mult_set_rate(struct clk_
ccu_mux_helper_adjust_parent_for_prediv(&cm->common, &cm->mux, -1,
&parent_rate);
- _cm.min = 1;
+ _cm.min = cm->mult.min;
_cm.max = 1 << cm->mult.width;
ccu_mult_find_best(parent_rate, rate, &_cm);
--- a/drivers/clk/sunxi-ng/ccu_mult.h
+++ b/drivers/clk/sunxi-ng/ccu_mult.h
@@ -7,14 +7,19 @@
struct ccu_mult_internal {
u8 shift;
u8 width;
+ u8 min;
};
-#define _SUNXI_CCU_MULT(_shift, _width) \
- { \
- .shift = _shift, \
- .width = _width, \
+#define _SUNXI_CCU_MULT_MIN(_shift, _width, _min) \
+ { \
+ .shift = _shift, \
+ .width = _width, \
+ .min = _min, \
}
+#define _SUNXI_CCU_MULT(_shift, _width) \
+ _SUNXI_CCU_MULT_MIN(_shift, _width, 1)
+
struct ccu_mult {
u32 enable;
--- a/drivers/clk/sunxi-ng/ccu_nk.c
+++ b/drivers/clk/sunxi-ng/ccu_nk.c
@@ -97,9 +97,9 @@ static long ccu_nk_round_rate(struct clk
if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate *= nk->fixed_post_div;
- _nk.min_n = 1;
+ _nk.min_n = nk->n.min;
_nk.max_n = 1 << nk->n.width;
- _nk.min_k = 1;
+ _nk.min_k = nk->k.min;
_nk.max_k = 1 << nk->k.width;
ccu_nk_find_best(*parent_rate, rate, &_nk);
@@ -122,9 +122,9 @@ static int ccu_nk_set_rate(struct clk_hw
if (nk->common.features & CCU_FEATURE_FIXED_POSTDIV)
rate = rate * nk->fixed_post_div;
- _nk.min_n = 1;
+ _nk.min_n = nk->n.min;
_nk.max_n = 1 << nk->n.width;
- _nk.min_k = 1;
+ _nk.min_k = nk->k.min;
_nk.max_k = 1 << nk->k.width;
ccu_nk_find_best(parent_rate, rate, &_nk);
--- a/drivers/clk/sunxi-ng/ccu_nkm.c
+++ b/drivers/clk/sunxi-ng/ccu_nkm.c
@@ -100,9 +100,9 @@ static unsigned long ccu_nkm_round_rate(
struct ccu_nkm *nkm = data;
struct _ccu_nkm _nkm;
- _nkm.min_n = 1;
+ _nkm.min_n = nkm->n.min;
_nkm.max_n = 1 << nkm->n.width;
- _nkm.min_k = 1;
+ _nkm.min_k = nkm->k.min;
_nkm.max_k = 1 << nkm->k.width;
_nkm.min_m = 1;
_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
@@ -129,9 +129,9 @@ static int ccu_nkm_set_rate(struct clk_h
unsigned long flags;
u32 reg;
- _nkm.min_n = 1;
+ _nkm.min_n = nkm->n.min;
_nkm.max_n = 1 << nkm->n.width;
- _nkm.min_k = 1;
+ _nkm.min_k = nkm->k.min;
_nkm.max_k = 1 << nkm->k.width;
_nkm.min_m = 1;
_nkm.max_m = nkm->m.max ?: 1 << nkm->m.width;
--- a/drivers/clk/sunxi-ng/ccu_nkmp.c
+++ b/drivers/clk/sunxi-ng/ccu_nkmp.c
@@ -107,9 +107,9 @@ static long ccu_nkmp_round_rate(struct c
struct ccu_nkmp *nkmp = hw_to_ccu_nkmp(hw);
struct _ccu_nkmp _nkmp;
- _nkmp.min_n = 1;
+ _nkmp.min_n = nkmp->n.min;
_nkmp.max_n = 1 << nkmp->n.width;
- _nkmp.min_k = 1;
+ _nkmp.min_k = nkmp->k.min;
_nkmp.max_k = 1 << nkmp->k.width;
_nkmp.min_m = 1;
_nkmp.max_m = nkmp->m.max ?: 1 << nkmp->m.width;
--- a/drivers/clk/sunxi-ng/ccu_nm.c
+++ b/drivers/clk/sunxi-ng/ccu_nm.c
@@ -93,7 +93,7 @@ static long ccu_nm_round_rate(struct clk
struct ccu_nm *nm = hw_to_ccu_nm(hw);
struct _ccu_nm _nm;
- _nm.min_n = 1;
+ _nm.min_n = nm->n.min;
_nm.max_n = 1 << nm->n.width;
_nm.min_m = 1;
_nm.max_m = nm->m.max ?: 1 << nm->m.width;

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target/linux/sunxi/patches-4.9/0007-clk-sunxi-ng-Add-A64-clocks.patch
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311
target/linux/sunxi/patches-4.9/0010-arm64-dts-add-Allwinner-A64-SoC-.dtsi.patch
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From 6bc37fac30cf01c39feb17834090089304bd1d31 Mon Sep 17 00:00:00 2001
From: Andre Przywara <andre.przywara@arm.com>
Date: Mon, 18 Jan 2016 10:24:31 +0000
Subject: arm64: dts: add Allwinner A64 SoC .dtsi
The Allwinner A64 SoC is a low-cost chip with 4 ARM Cortex-A53 cores
and the typical tablet / TV box peripherals.
The SoC is based on the (32-bit) Allwinner H3 chip, sharing most of
the peripherals and the memory map.
Although the cores are proper 64-bit ones, the whole SoC is actually
limited to 4GB (including all the supported DRAM), so we use 32-bit
address and size cells. This has the nice feature of us being able to
reuse the DT for 32-bit kernels as well.
This .dtsi lists the hardware that we support so far.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
[Maxime: Convert to CCU binding, drop the MMC support for now]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
Documentation/devicetree/bindings/arm/sunxi.txt | 1 +
MAINTAINERS | 1 +
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 263 ++++++++++++++++++++++++
3 files changed, 265 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
--- a/Documentation/devicetree/bindings/arm/sunxi.txt
+++ b/Documentation/devicetree/bindings/arm/sunxi.txt
@@ -14,4 +14,5 @@ using one of the following compatible st
allwinner,sun8i-a83t
allwinner,sun8i-h3
allwinner,sun9i-a80
+ allwinner,sun50i-a64
nextthing,gr8
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1026,6 +1026,7 @@ L: linux-arm-kernel@lists.infradead.org
S: Maintained
N: sun[x456789]i
F: arch/arm/boot/dts/ntc-gr8*
+F: arch/arm64/boot/dts/allwinner/
ARM/Allwinner SoC Clock Support
M: Emilio López <emilio@elopez.com.ar>
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2016 ARM Ltd.
+ * based on the Allwinner H3 dtsi:
+ * Copyright (C) 2015 Jens Kuske <jenskuske@gmail.com>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <dt-bindings/clock/sun50i-a64-ccu.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
+#include <dt-bindings/reset/sun50i-a64-ccu.h>
+
+/ {
+ interrupt-parent = <&gic>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu0: cpu@0 {
+ compatible = "arm,cortex-a53", "arm,armv8";
+ device_type = "cpu";
+ reg = <0>;
+ enable-method = "psci";
+ };
+
+ cpu1: cpu@1 {
+ compatible = "arm,cortex-a53", "arm,armv8";
+ device_type = "cpu";
+ reg = <1>;
+ enable-method = "psci";
+ };
+
+ cpu2: cpu@2 {
+ compatible = "arm,cortex-a53", "arm,armv8";
+ device_type = "cpu";
+ reg = <2>;
+ enable-method = "psci";
+ };
+
+ cpu3: cpu@3 {
+ compatible = "arm,cortex-a53", "arm,armv8";
+ device_type = "cpu";
+ reg = <3>;
+ enable-method = "psci";
+ };
+ };
+
+ osc24M: osc24M_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <24000000>;
+ clock-output-names = "osc24M";
+ };
+
+ osc32k: osc32k_clk {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <32768>;
+ clock-output-names = "osc32k";
+ };
+
+ psci {
+ compatible = "arm,psci-0.2";
+ method = "smc";
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13
+ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+ <GIC_PPI 14
+ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+ <GIC_PPI 11
+ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>,
+ <GIC_PPI 10
+ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ ccu: clock@01c20000 {
+ compatible = "allwinner,sun50i-a64-ccu";
+ reg = <0x01c20000 0x400>;
+ clocks = <&osc24M>, <&osc32k>;
+ clock-names = "hosc", "losc";
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+
+ pio: pinctrl@1c20800 {
+ compatible = "allwinner,sun50i-a64-pinctrl";
+ reg = <0x01c20800 0x400>;
+ interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_PIO>;
+ gpio-controller;
+ #gpio-cells = <3>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+
+ i2c1_pins: i2c1_pins {
+ pins = "PH2", "PH3";
+ function = "i2c1";
+ };
+
+ uart0_pins_a: uart0@0 {
+ pins = "PB8", "PB9";
+ function = "uart0";
+ };
+ };
+
+ uart0: serial@1c28000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x01c28000 0x400>;
+ interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&ccu CLK_BUS_UART0>;
+ resets = <&ccu RST_BUS_UART0>;
+ status = "disabled";
+ };
+
+ uart1: serial@1c28400 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x01c28400 0x400>;
+ interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&ccu CLK_BUS_UART1>;
+ resets = <&ccu RST_BUS_UART1>;
+ status = "disabled";
+ };
+
+ uart2: serial@1c28800 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x01c28800 0x400>;
+ interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&ccu CLK_BUS_UART2>;
+ resets = <&ccu RST_BUS_UART2>;
+ status = "disabled";
+ };
+
+ uart3: serial@1c28c00 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x01c28c00 0x400>;
+ interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&ccu CLK_BUS_UART3>;
+ resets = <&ccu RST_BUS_UART3>;
+ status = "disabled";
+ };
+
+ uart4: serial@1c29000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x01c29000 0x400>;
+ interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+ reg-shift = <2>;
+ reg-io-width = <4>;
+ clocks = <&ccu CLK_BUS_UART4>;
+ resets = <&ccu RST_BUS_UART4>;
+ status = "disabled";
+ };
+
+ i2c0: i2c@1c2ac00 {
+ compatible = "allwinner,sun6i-a31-i2c";
+ reg = <0x01c2ac00 0x400>;
+ interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_I2C0>;
+ resets = <&ccu RST_BUS_I2C0>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ i2c1: i2c@1c2b000 {
+ compatible = "allwinner,sun6i-a31-i2c";
+ reg = <0x01c2b000 0x400>;
+ interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_I2C1>;
+ resets = <&ccu RST_BUS_I2C1>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ i2c2: i2c@1c2b400 {
+ compatible = "allwinner,sun6i-a31-i2c";
+ reg = <0x01c2b400 0x400>;
+ interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_I2C2>;
+ resets = <&ccu RST_BUS_I2C2>;
+ status = "disabled";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ gic: interrupt-controller@1c81000 {
+ compatible = "arm,gic-400";
+ reg = <0x01c81000 0x1000>,
+ <0x01c82000 0x2000>,
+ <0x01c84000 0x2000>,
+ <0x01c86000 0x2000>;
+ interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ };
+
+ rtc: rtc@1f00000 {
+ compatible = "allwinner,sun6i-a31-rtc";
+ reg = <0x01f00000 0x54>;
+ interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+};

176
target/linux/sunxi/patches-4.9/0011-arm64-dts-add-Pine64-support.patch
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From 4e3886081848b7ea16452a92c4324acaab644d49 Mon Sep 17 00:00:00 2001
From: Andre Przywara <andre.przywara@arm.com>
Date: Tue, 19 Jan 2016 10:36:39 +0000
Subject: arm64: dts: add Pine64 support
The Pine64 is a cost-efficient development board based on the
Allwinner A64 SoC.
There are three models: the basic version with Fast Ethernet and
512 MB of DRAM (Pine64) and two Pine64+ versions, which both
feature Gigabit Ethernet and additional connectors for touchscreens
and a camera. Or as my son put it: "Those are smaller and these are
missing." ;-)
The two Pine64+ models just differ in the amount of DRAM
(1GB vs. 2GB). Since U-Boot will figure out the right size for us and
patches the DT accordingly we just need to provide one DT for the
Pine64+.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
[Maxime: Removed the common DTSI and include directly the pine64 DTS]
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
arch/arm64/boot/dts/Makefile | 1 +
arch/arm64/boot/dts/allwinner/Makefile | 5 ++
.../boot/dts/allwinner/sun50i-a64-pine64-plus.dts | 50 +++++++++++++++
.../arm64/boot/dts/allwinner/sun50i-a64-pine64.dts | 74 ++++++++++++++++++++++
4 files changed, 130 insertions(+)
create mode 100644 arch/arm64/boot/dts/allwinner/Makefile
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -1,4 +1,5 @@
dts-dirs += al
+dts-dirs += allwinner
dts-dirs += altera
dts-dirs += amd
dts-dirs += amlogic
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -0,0 +1,5 @@
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pine64-plus.dtb sun50i-a64-pine64.dtb
+
+always := $(dtb-y)
+subdir-y := $(dts-dirs)
+clean-files := *.dtb
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2016 ARM Ltd.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "sun50i-a64-pine64.dts"
+
+/ {
+ model = "Pine64+";
+ compatible = "pine64,pine64-plus", "allwinner,sun50i-a64";
+
+ /* TODO: Camera, Ethernet PHY, touchscreen, etc. */
+};
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2016 ARM Ltd.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "sun50i-a64.dtsi"
+
+/ {
+ model = "Pine64";
+ compatible = "pine64,pine64", "allwinner,sun50i-a64";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins_a>;
+ status = "okay";
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ status = "okay";
+};
+
+&i2c1_pins {
+ bias-pull-up;
+};

134
target/linux/sunxi/patches-4.9/0012-arm64-dts-fix-build-errors-from-missing-dependencies.patch
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From f98121f3ef3d36f4d040b11ab38f15387f6eefa2 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 30 Nov 2016 15:08:55 +0100
Subject: arm64: dts: fix build errors from missing dependencies
Two branches were incorrectly sent without having the necessary
header file changes. Rather than back those out now, I'm replacing
the symbolic names for the clks and resets with the numeric
values to get 'make allmodconfig dtbs' back to work.
After the header file changes are merged, we can revert this
patch.
Fixes: 6bc37fa ("arm64: dts: add Allwinner A64 SoC .dtsi")
Fixes: 50784e6 ("dts: arm64: db820c: add pmic pins specific dts file")
Acked-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 36 ++++++++++------------
.../boot/dts/qcom/apq8096-db820c-pmic-pins.dtsi | 2 +-
2 files changed, 18 insertions(+), 20 deletions(-)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -42,10 +42,8 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
-#include <dt-bindings/clock/sun50i-a64-ccu.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/sun4i-a10.h>
-#include <dt-bindings/reset/sun50i-a64-ccu.h>
/ {
interrupt-parent = <&gic>;
@@ -137,7 +135,7 @@
interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&ccu CLK_BUS_PIO>;
+ clocks = <&ccu 58>;
gpio-controller;
#gpio-cells = <3>;
interrupt-controller;
@@ -160,8 +158,8 @@
interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
- clocks = <&ccu CLK_BUS_UART0>;
- resets = <&ccu RST_BUS_UART0>;
+ clocks = <&ccu 67>;
+ resets = <&ccu 46>;
status = "disabled";
};
@@ -171,8 +169,8 @@
interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
- clocks = <&ccu CLK_BUS_UART1>;
- resets = <&ccu RST_BUS_UART1>;
+ clocks = <&ccu 68>;
+ resets = <&ccu 47>;
status = "disabled";
};
@@ -182,8 +180,8 @@
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
- clocks = <&ccu CLK_BUS_UART2>;
- resets = <&ccu RST_BUS_UART2>;
+ clocks = <&ccu 69>;
+ resets = <&ccu 48>;
status = "disabled";
};
@@ -193,8 +191,8 @@
interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
- clocks = <&ccu CLK_BUS_UART3>;
- resets = <&ccu RST_BUS_UART3>;
+ clocks = <&ccu 70>;
+ resets = <&ccu 49>;
status = "disabled";
};
@@ -204,8 +202,8 @@
interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
reg-shift = <2>;
reg-io-width = <4>;
- clocks = <&ccu CLK_BUS_UART4>;
- resets = <&ccu RST_BUS_UART4>;
+ clocks = <&ccu 71>;
+ resets = <&ccu 50>;
status = "disabled";
};
@@ -213,8 +211,8 @@
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2ac00 0x400>;
interrupts = <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&ccu CLK_BUS_I2C0>;
- resets = <&ccu RST_BUS_I2C0>;
+ clocks = <&ccu 63>;
+ resets = <&ccu 42>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
@@ -224,8 +222,8 @@
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2b000 0x400>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&ccu CLK_BUS_I2C1>;
- resets = <&ccu RST_BUS_I2C1>;
+ clocks = <&ccu 64>;
+ resets = <&ccu 43>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
@@ -235,8 +233,8 @@
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2b400 0x400>;
interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&ccu CLK_BUS_I2C2>;
- resets = <&ccu RST_BUS_I2C2>;
+ clocks = <&ccu 65>;
+ resets = <&ccu 44>;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;

251
target/linux/sunxi/patches-4.9/0030-pinctrl-sunxi-Rework-the-pin-config-building-code.patch
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From f233dbca6227703eaae2f67d6d9c79819773f16b Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Tue, 11 Oct 2016 17:45:59 +0200
Subject: pinctrl: sunxi: Rework the pin config building code
In order to support more easily the generic pinctrl properties, rework the
pinctrl maps configuration and split it into several sub-functions.
One of the side-effects from that rework is that we only parse the pin
configuration once, since it's going to be common to every pin, instead of
having to parsing once for each pin.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 178 +++++++++++++++++++++++++---------
1 file changed, 130 insertions(+), 48 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -145,6 +145,110 @@ static int sunxi_pctrl_get_group_pins(st
return 0;
}
+static bool sunxi_pctrl_has_bias_prop(struct device_node *node)
+{
+ return of_find_property(node, "allwinner,pull", NULL);
+}
+
+static bool sunxi_pctrl_has_drive_prop(struct device_node *node)
+{
+ return of_find_property(node, "allwinner,drive", NULL);
+}
+
+static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
+{
+ u32 val;
+
+ if (of_property_read_u32(node, "allwinner,pull", &val))
+ return -EINVAL;
+
+ switch (val) {
+ case 1:
+ return PIN_CONFIG_BIAS_PULL_UP;
+ case 2:
+ return PIN_CONFIG_BIAS_PULL_DOWN;
+ }
+
+ return -EINVAL;
+}
+
+static int sunxi_pctrl_parse_drive_prop(struct device_node *node)
+{
+ u32 val;
+
+ if (of_property_read_u32(node, "allwinner,drive", &val))
+ return -EINVAL;
+
+ return (val + 1) * 10;
+}
+
+static const char *sunxi_pctrl_parse_function_prop(struct device_node *node)
+{
+ const char *function;
+ int ret;
+
+ ret = of_property_read_string(node, "allwinner,function", &function);
+ if (!ret)
+ return function;
+
+ return NULL;
+}
+
+static const char *sunxi_pctrl_find_pins_prop(struct device_node *node,
+ int *npins)
+{
+ int count;
+
+ count = of_property_count_strings(node, "allwinner,pins");
+ if (count > 0) {
+ *npins = count;
+ return "allwinner,pins";
+ }
+
+ return NULL;
+}
+
+static unsigned long *sunxi_pctrl_build_pin_config(struct device_node *node,
+ unsigned int *len)
+{
+ unsigned long *pinconfig;
+ unsigned int configlen = 0, idx = 0;
+
+ if (sunxi_pctrl_has_drive_prop(node))
+ configlen++;
+ if (sunxi_pctrl_has_bias_prop(node))
+ configlen++;
+
+ pinconfig = kzalloc(configlen * sizeof(*pinconfig), GFP_KERNEL);
+ if (!pinconfig)
+ return NULL;
+
+ if (sunxi_pctrl_has_drive_prop(node)) {
+ int drive = sunxi_pctrl_parse_drive_prop(node);
+ if (drive < 0)
+ goto err_free;
+
+ pinconfig[idx++] = pinconf_to_config_packed(PIN_CONFIG_DRIVE_STRENGTH,
+ drive);
+ }
+
+ if (sunxi_pctrl_has_bias_prop(node)) {
+ int pull = sunxi_pctrl_parse_bias_prop(node);
+ if (pull < 0)
+ goto err_free;
+
+ pinconfig[idx++] = pinconf_to_config_packed(pull, 0);
+ }
+
+
+ *len = configlen;
+ return pinconfig;
+
+err_free:
+ kfree(pinconfig);
+ return NULL;
+}
+
static int sunxi_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
struct device_node *node,
struct pinctrl_map **map,
@@ -153,38 +257,45 @@ static int sunxi_pctrl_dt_node_to_map(st
struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
unsigned long *pinconfig;
struct property *prop;
- const char *function;
+ const char *function, *pin_prop;
const char *group;
- int ret, nmaps, i = 0;
- u32 val;
+ int ret, npins, nmaps, configlen = 0, i = 0;
*map = NULL;
*num_maps = 0;
- ret = of_property_read_string(node, "allwinner,function", &function);
- if (ret) {
- dev_err(pctl->dev,
- "missing allwinner,function property in node %s\n",
+ function = sunxi_pctrl_parse_function_prop(node);
+ if (!function) {
+ dev_err(pctl->dev, "missing function property in node %s\n",
node->name);
return -EINVAL;
}
- nmaps = of_property_count_strings(node, "allwinner,pins") * 2;
- if (nmaps < 0) {
- dev_err(pctl->dev,
- "missing allwinner,pins property in node %s\n",
+ pin_prop = sunxi_pctrl_find_pins_prop(node, &npins);
+ if (!pin_prop) {
+ dev_err(pctl->dev, "missing pins property in node %s\n",
node->name);
return -EINVAL;
}
+ /*
+ * We have two maps for each pin: one for the function, one
+ * for the configuration (bias, strength, etc)
+ */
+ nmaps = npins * 2;
*map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL);
if (!*map)
return -ENOMEM;
- of_property_for_each_string(node, "allwinner,pins", prop, group) {
+ pinconfig = sunxi_pctrl_build_pin_config(node, &configlen);
+ if (!pinconfig) {
+ ret = -EINVAL;
+ goto err_free_map;
+ }
+
+ of_property_for_each_string(node, pin_prop, prop, group) {
struct sunxi_pinctrl_group *grp =
sunxi_pinctrl_find_group_by_name(pctl, group);
- int j = 0, configlen = 0;
if (!grp) {
dev_err(pctl->dev, "unknown pin %s", group);
@@ -207,34 +318,6 @@ static int sunxi_pctrl_dt_node_to_map(st
(*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
(*map)[i].data.configs.group_or_pin = group;
-
- if (of_find_property(node, "allwinner,drive", NULL))
- configlen++;
- if (of_find_property(node, "allwinner,pull", NULL))
- configlen++;
-
- pinconfig = kzalloc(configlen * sizeof(*pinconfig), GFP_KERNEL);
- if (!pinconfig) {
- kfree(*map);
- return -ENOMEM;
- }
-
- if (!of_property_read_u32(node, "allwinner,drive", &val)) {
- u16 strength = (val + 1) * 10;
- pinconfig[j++] =
- pinconf_to_config_packed(PIN_CONFIG_DRIVE_STRENGTH,
- strength);
- }
-
- if (!of_property_read_u32(node, "allwinner,pull", &val)) {
- enum pin_config_param pull = PIN_CONFIG_END;
- if (val == 1)
- pull = PIN_CONFIG_BIAS_PULL_UP;
- else if (val == 2)
- pull = PIN_CONFIG_BIAS_PULL_DOWN;
- pinconfig[j++] = pinconf_to_config_packed(pull, 0);
- }
-
(*map)[i].data.configs.configs = pinconfig;
(*map)[i].data.configs.num_configs = configlen;
@@ -244,19 +327,18 @@ static int sunxi_pctrl_dt_node_to_map(st
*num_maps = nmaps;
return 0;
+
+err_free_map:
+ kfree(map);
+ return ret;
}
static void sunxi_pctrl_dt_free_map(struct pinctrl_dev *pctldev,
struct pinctrl_map *map,
unsigned num_maps)
{
- int i;
-
- for (i = 0; i < num_maps; i++) {
- if (map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
- kfree(map[i].data.configs.configs);
- }
-
+ /* All the maps have the same pin config, free only the first one */
+ kfree(map[0].data.configs.configs);
kfree(map);
}

38
target/linux/sunxi/patches-4.9/0031-pinctrl-sunxi-Use-macros-from-bindings-header-file-f.patch
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From 42676fa4aa87eda4fc762df495d4bde2ddc4bfce Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Tue, 11 Oct 2016 17:46:00 +0200
Subject: pinctrl: sunxi: Use macros from bindings header file for DT parsing
Since we have some bindings header for our hardcoded flags, let's use them
when we can.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -28,6 +28,8 @@
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <dt-bindings/pinctrl/sun4i-a10.h>
+
#include "../core.h"
#include "pinctrl-sunxi.h"
@@ -163,9 +165,9 @@ static int sunxi_pctrl_parse_bias_prop(s
return -EINVAL;
switch (val) {
- case 1:
+ case SUN4I_PINCTRL_PULL_UP:
return PIN_CONFIG_BIAS_PULL_UP;
- case 2:
+ case SUN4I_PINCTRL_PULL_DOWN:
return PIN_CONFIG_BIAS_PULL_DOWN;
}

42
target/linux/sunxi/patches-4.9/0032-pinctrl-sunxi-Handle-bias-disable.patch
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From 07fe64ba213f36ca8f6ffd8c4d5893f022744fdb Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Tue, 11 Oct 2016 17:46:01 +0200
Subject: pinctrl: sunxi: Handle bias disable
So far, putting NO_PULL in allwinner,pull was ignored, behaving like if
that property was not there at all.
Obviously, this is not the right thing to do, and in that case, we really
need to just disable the bias.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -165,6 +165,8 @@ static int sunxi_pctrl_parse_bias_prop(s
return -EINVAL;
switch (val) {
+ case SUN4I_PINCTRL_NO_PULL:
+ return PIN_CONFIG_BIAS_DISABLE;
case SUN4I_PINCTRL_PULL_UP:
return PIN_CONFIG_BIAS_PULL_UP;
case SUN4I_PINCTRL_PULL_DOWN:
@@ -401,6 +403,12 @@ static int sunxi_pconf_group_set(struct
| dlevel << sunxi_dlevel_offset(pin),
pctl->membase + sunxi_dlevel_reg(pin));
break;
+ case PIN_CONFIG_BIAS_DISABLE:
+ val = readl(pctl->membase + sunxi_pull_reg(pin));
+ mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
+ writel((val & ~mask),
+ pctl->membase + sunxi_pull_reg(pin));
+ break;
case PIN_CONFIG_BIAS_PULL_UP:
val = readl(pctl->membase + sunxi_pull_reg(pin));
mask = PULL_PINS_MASK << sunxi_pull_offset(pin);

106
target/linux/sunxi/patches-4.9/0033-pinctrl-sunxi-Support-generic-binding.patch
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From cefbf1a1b29531a970bc2908a50a75d6474fcc38 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Thu, 20 Oct 2016 15:49:03 +0200
Subject: pinctrl: sunxi: Support generic binding
Our bindings are mostly irrelevant now that we have generic pinctrl
bindings that cover exactly the same uses cases.
Add support for the new ones, and obviously keep our old binding support in
order to keep the ABI stable.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 48 +++++++++++++++++++++++++++++++++--
1 file changed, 46 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -149,18 +149,33 @@ static int sunxi_pctrl_get_group_pins(st
static bool sunxi_pctrl_has_bias_prop(struct device_node *node)
{
- return of_find_property(node, "allwinner,pull", NULL);
+ return of_find_property(node, "bias-pull-up", NULL) ||
+ of_find_property(node, "bias-pull-down", NULL) ||
+ of_find_property(node, "bias-disable", NULL) ||
+ of_find_property(node, "allwinner,pull", NULL);
}
static bool sunxi_pctrl_has_drive_prop(struct device_node *node)
{
- return of_find_property(node, "allwinner,drive", NULL);
+ return of_find_property(node, "drive-strength", NULL) ||
+ of_find_property(node, "allwinner,drive", NULL);
}
static int sunxi_pctrl_parse_bias_prop(struct device_node *node)
{
u32 val;
+ /* Try the new style binding */
+ if (of_find_property(node, "bias-pull-up", NULL))
+ return PIN_CONFIG_BIAS_PULL_UP;
+
+ if (of_find_property(node, "bias-pull-down", NULL))
+ return PIN_CONFIG_BIAS_PULL_DOWN;
+
+ if (of_find_property(node, "bias-disable", NULL))
+ return PIN_CONFIG_BIAS_DISABLE;
+
+ /* And fall back to the old binding */
if (of_property_read_u32(node, "allwinner,pull", &val))
return -EINVAL;
@@ -180,6 +195,21 @@ static int sunxi_pctrl_parse_drive_prop(
{
u32 val;
+ /* Try the new style binding */
+ if (!of_property_read_u32(node, "drive-strength", &val)) {
+ /* We can't go below 10mA ... */
+ if (val < 10)
+ return -EINVAL;
+
+ /* ... and only up to 40 mA ... */
+ if (val > 40)
+ val = 40;
+
+ /* by steps of 10 mA */
+ return rounddown(val, 10);
+ }
+
+ /* And then fall back to the old binding */
if (of_property_read_u32(node, "allwinner,drive", &val))
return -EINVAL;
@@ -191,6 +221,12 @@ static const char *sunxi_pctrl_parse_fun
const char *function;
int ret;
+ /* Try the generic binding */
+ ret = of_property_read_string(node, "function", &function);
+ if (!ret)
+ return function;
+
+ /* And fall back to our legacy one */
ret = of_property_read_string(node, "allwinner,function", &function);
if (!ret)
return function;
@@ -203,6 +239,14 @@ static const char *sunxi_pctrl_find_pins
{
int count;
+ /* Try the generic binding */
+ count = of_property_count_strings(node, "pins");
+ if (count > 0) {
+ *npins = count;
+ return "pins";
+ }
+
+ /* And fall back to our legacy one */
count = of_property_count_strings(node, "allwinner,pins");
if (count > 0) {
*npins = count;

128
target/linux/sunxi/patches-4.9/0034-pinctrl-sunxi-Deal-with-configless-pins.patch
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From e11dee2e98f8abc99ad5336796576a827853ccfa Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Thu, 20 Oct 2016 15:49:02 +0200
Subject: pinctrl: sunxi: Deal with configless pins
Even though the our binding had the assumption that the allwinner,pull and
allwinner,drive properties were optional, the code never took that into
account.
Fix that.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 51 +++++++++++++++++++++++++----------
1 file changed, 37 insertions(+), 14 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -261,20 +261,29 @@ static unsigned long *sunxi_pctrl_build_
{
unsigned long *pinconfig;
unsigned int configlen = 0, idx = 0;
+ int ret;
if (sunxi_pctrl_has_drive_prop(node))
configlen++;
if (sunxi_pctrl_has_bias_prop(node))
configlen++;
+ /*
+ * If we don't have any configuration, bail out
+ */
+ if (!configlen)
+ return NULL;
+
pinconfig = kzalloc(configlen * sizeof(*pinconfig), GFP_KERNEL);
if (!pinconfig)
- return NULL;
+ return ERR_PTR(-ENOMEM);
if (sunxi_pctrl_has_drive_prop(node)) {
int drive = sunxi_pctrl_parse_drive_prop(node);
- if (drive < 0)
+ if (drive < 0) {
+ ret = drive;
goto err_free;
+ }
pinconfig[idx++] = pinconf_to_config_packed(PIN_CONFIG_DRIVE_STRENGTH,
drive);
@@ -282,8 +291,10 @@ static unsigned long *sunxi_pctrl_build_
if (sunxi_pctrl_has_bias_prop(node)) {
int pull = sunxi_pctrl_parse_bias_prop(node);
- if (pull < 0)
+ if (pull < 0) {
+ ret = pull;
goto err_free;
+ }
pinconfig[idx++] = pinconf_to_config_packed(pull, 0);
}
@@ -294,7 +305,7 @@ static unsigned long *sunxi_pctrl_build_
err_free:
kfree(pinconfig);
- return NULL;
+ return ERR_PTR(ret);
}
static int sunxi_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
@@ -328,7 +339,10 @@ static int sunxi_pctrl_dt_node_to_map(st
/*
* We have two maps for each pin: one for the function, one
- * for the configuration (bias, strength, etc)
+ * for the configuration (bias, strength, etc).
+ *
+ * We might be slightly overshooting, since we might not have
+ * any configuration.
*/
nmaps = npins * 2;
*map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL);
@@ -336,8 +350,8 @@ static int sunxi_pctrl_dt_node_to_map(st
return -ENOMEM;
pinconfig = sunxi_pctrl_build_pin_config(node, &configlen);
- if (!pinconfig) {
- ret = -EINVAL;
+ if (IS_ERR(pinconfig)) {
+ ret = PTR_ERR(pinconfig);
goto err_free_map;
}
@@ -364,15 +378,24 @@ static int sunxi_pctrl_dt_node_to_map(st
i++;
- (*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
- (*map)[i].data.configs.group_or_pin = group;
- (*map)[i].data.configs.configs = pinconfig;
- (*map)[i].data.configs.num_configs = configlen;
-
- i++;
+ if (pinconfig) {
+ (*map)[i].type = PIN_MAP_TYPE_CONFIGS_GROUP;
+ (*map)[i].data.configs.group_or_pin = group;
+ (*map)[i].data.configs.configs = pinconfig;
+ (*map)[i].data.configs.num_configs = configlen;
+ i++;
+ }
}
- *num_maps = nmaps;
+ *num_maps = i;
+
+ /*
+ * We know have the number of maps we need, we can resize our
+ * map array
+ */
+ *map = krealloc(*map, i * sizeof(struct pinctrl_map), GFP_KERNEL);
+ if (!map)
+ return -ENOMEM;
return 0;

437
target/linux/sunxi/patches-4.9/0035-pinctrl-sunxi-make-bool-drivers-explicitly-non-modul.patch
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From 0c8c6ba00cbf2c0a6164aa41d43d017d65caf321 Mon Sep 17 00:00:00 2001
From: Paul Gortmaker <paul.gortmaker@windriver.com>
Date: Sat, 29 Oct 2016 20:00:30 -0400
Subject: pinctrl: sunxi: make bool drivers explicitly non-modular
None of the Kconfigs for any of these drivers are tristate,
meaning that they currently are not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only. All
drivers get essentially the same change, so they are handled in batch.
Changes are (1) use builtin_platform_driver, (2) use init.h header
(3) delete module_exit related code, (4) delete MODULE_DEVICE_TABLE,
and (5) delete MODULE_LICENCE/MODULE_AUTHOR and associated tags.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We do delete the MODULE_LICENSE etc. tags since all that information
is already contained at the top of each file in the comments.
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Hongzhou Yang <hongzhou.yang@mediatek.com>
Cc: Fabian Frederick <fabf@skynet.be>
Cc: Maxime Coquelin <maxime.coquelin@st.com>
Cc: Vishnu Patekar <vishnupatekar0510@gmail.com>
Cc: Mylene Josserand <mylene.josserand@free-electrons.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-gr8.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun5i-a10s.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun5i-a13.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c | 10 ++--------
drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun6i-a31s.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c | 11 ++---------
drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c | 10 ++--------
drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun8i-a83t.c | 9 ++-------
drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c | 9 ++-------
13 files changed, 26 insertions(+), 95 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-gr8.c
+++ b/drivers/pinctrl/sunxi/pinctrl-gr8.c
@@ -12,7 +12,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -525,7 +525,6 @@ static const struct of_device_id sun5i_g
{ .compatible = "nextthing,gr8-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun5i_gr8_pinctrl_match);
static struct platform_driver sun5i_gr8_pinctrl_driver = {
.probe = sun5i_gr8_pinctrl_probe,
@@ -534,8 +533,4 @@ static struct platform_driver sun5i_gr8_
.of_match_table = sun5i_gr8_pinctrl_match,
},
};
-module_platform_driver(sun5i_gr8_pinctrl_driver);
-
-MODULE_AUTHOR("Mylene Josserand <mylene.josserand@free-electrons.com");
-MODULE_DESCRIPTION("NextThing GR8 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun5i_gr8_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun4i-a10.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -1036,7 +1036,6 @@ static const struct of_device_id sun4i_a
{ .compatible = "allwinner,sun4i-a10-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun4i_a10_pinctrl_match);
static struct platform_driver sun4i_a10_pinctrl_driver = {
.probe = sun4i_a10_pinctrl_probe,
@@ -1045,8 +1044,4 @@ static struct platform_driver sun4i_a10_
.of_match_table = sun4i_a10_pinctrl_match,
},
};
-module_platform_driver(sun4i_a10_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A10 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun4i_a10_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun5i-a10s.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun5i-a10s.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -674,7 +674,6 @@ static const struct of_device_id sun5i_a
{ .compatible = "allwinner,sun5i-a10s-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun5i_a10s_pinctrl_match);
static struct platform_driver sun5i_a10s_pinctrl_driver = {
.probe = sun5i_a10s_pinctrl_probe,
@@ -683,8 +682,4 @@ static struct platform_driver sun5i_a10s
.of_match_table = sun5i_a10s_pinctrl_match,
},
};
-module_platform_driver(sun5i_a10s_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A10s pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun5i_a10s_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun5i-a13.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun5i-a13.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -392,7 +392,6 @@ static const struct of_device_id sun5i_a
{ .compatible = "allwinner,sun5i-a13-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun5i_a13_pinctrl_match);
static struct platform_driver sun5i_a13_pinctrl_driver = {
.probe = sun5i_a13_pinctrl_probe,
@@ -401,8 +400,4 @@ static struct platform_driver sun5i_a13_
.of_match_table = sun5i_a13_pinctrl_match,
},
};
-module_platform_driver(sun5i_a13_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A13 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun5i_a13_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31-r.c
@@ -12,7 +12,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -136,7 +136,6 @@ static const struct of_device_id sun6i_a
{ .compatible = "allwinner,sun6i-a31-r-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun6i_a31_r_pinctrl_match);
static struct platform_driver sun6i_a31_r_pinctrl_driver = {
.probe = sun6i_a31_r_pinctrl_probe,
@@ -145,9 +144,4 @@ static struct platform_driver sun6i_a31_
.of_match_table = sun6i_a31_r_pinctrl_match,
},
};
-module_platform_driver(sun6i_a31_r_pinctrl_driver);
-
-MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com");
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A31 R_PIO pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun6i_a31_r_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -934,7 +934,6 @@ static const struct of_device_id sun6i_a
{ .compatible = "allwinner,sun6i-a31-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun6i_a31_pinctrl_match);
static struct platform_driver sun6i_a31_pinctrl_driver = {
.probe = sun6i_a31_pinctrl_probe,
@@ -943,8 +942,4 @@ static struct platform_driver sun6i_a31_
.of_match_table = sun6i_a31_pinctrl_match,
},
};
-module_platform_driver(sun6i_a31_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A31 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun6i_a31_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun6i-a31s.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun6i-a31s.c
@@ -11,7 +11,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -798,7 +798,6 @@ static const struct of_device_id sun6i_a
{ .compatible = "allwinner,sun6i-a31s-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun6i_a31s_pinctrl_match);
static struct platform_driver sun6i_a31s_pinctrl_driver = {
.probe = sun6i_a31s_pinctrl_probe,
@@ -807,8 +806,4 @@ static struct platform_driver sun6i_a31s
.of_match_table = sun6i_a31s_pinctrl_match,
},
};
-module_platform_driver(sun6i_a31s_pinctrl_driver);
-
-MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
-MODULE_DESCRIPTION("Allwinner A31s pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun6i_a31s_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun7i-a20.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -1045,7 +1045,6 @@ static const struct of_device_id sun7i_a
{ .compatible = "allwinner,sun7i-a20-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun7i_a20_pinctrl_match);
static struct platform_driver sun7i_a20_pinctrl_driver = {
.probe = sun7i_a20_pinctrl_probe,
@@ -1054,8 +1053,4 @@ static struct platform_driver sun7i_a20_
.of_match_table = sun7i_a20_pinctrl_match,
},
};
-module_platform_driver(sun7i_a20_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A20 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun7i_a20_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23-r.c
@@ -15,7 +15,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -123,7 +123,6 @@ static const struct of_device_id sun8i_a
{ .compatible = "allwinner,sun8i-a23-r-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun8i_a23_r_pinctrl_match);
static struct platform_driver sun8i_a23_r_pinctrl_driver = {
.probe = sun8i_a23_r_pinctrl_probe,
@@ -132,10 +131,4 @@ static struct platform_driver sun8i_a23_
.of_match_table = sun8i_a23_r_pinctrl_match,
},
};
-module_platform_driver(sun8i_a23_r_pinctrl_driver);
-
-MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
-MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com");
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A23 R_PIO pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun8i_a23_r_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a23.c
@@ -14,7 +14,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -575,7 +575,6 @@ static const struct of_device_id sun8i_a
{ .compatible = "allwinner,sun8i-a23-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun8i_a23_pinctrl_match);
static struct platform_driver sun8i_a23_pinctrl_driver = {
.probe = sun8i_a23_pinctrl_probe,
@@ -584,9 +583,4 @@ static struct platform_driver sun8i_a23_
.of_match_table = sun8i_a23_pinctrl_match,
},
};
-module_platform_driver(sun8i_a23_pinctrl_driver);
-
-MODULE_AUTHOR("Chen-Yu Tsai <wens@csie.org>");
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com");
-MODULE_DESCRIPTION("Allwinner A23 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun8i_a23_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
@@ -12,7 +12,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -498,7 +498,6 @@ static const struct of_device_id sun8i_a
{ .compatible = "allwinner,sun8i-a33-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun8i_a33_pinctrl_match);
static struct platform_driver sun8i_a33_pinctrl_driver = {
.probe = sun8i_a33_pinctrl_probe,
@@ -507,8 +506,4 @@ static struct platform_driver sun8i_a33_
.of_match_table = sun8i_a33_pinctrl_match,
},
};
-module_platform_driver(sun8i_a33_pinctrl_driver);
-
-MODULE_AUTHOR("Vishnu Patekar <vishnupatekar0510@gmail.com>");
-MODULE_DESCRIPTION("Allwinner a33 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun8i_a33_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a83t.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a83t.c
@@ -12,7 +12,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -587,7 +587,6 @@ static const struct of_device_id sun8i_a
{ .compatible = "allwinner,sun8i-a83t-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun8i_a83t_pinctrl_match);
static struct platform_driver sun8i_a83t_pinctrl_driver = {
.probe = sun8i_a83t_pinctrl_probe,
@@ -596,8 +595,4 @@ static struct platform_driver sun8i_a83t
.of_match_table = sun8i_a83t_pinctrl_match,
},
};
-module_platform_driver(sun8i_a83t_pinctrl_driver);
-
-MODULE_AUTHOR("Vishnu Patekar <vishnupatekar0510@gmail.com>");
-MODULE_DESCRIPTION("Allwinner a83t pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun8i_a83t_pinctrl_driver);
--- a/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun9i-a80.c
@@ -10,7 +10,7 @@
* warranty of any kind, whether express or implied.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
@@ -733,7 +733,6 @@ static const struct of_device_id sun9i_a
{ .compatible = "allwinner,sun9i-a80-pinctrl", },
{}
};
-MODULE_DEVICE_TABLE(of, sun9i_a80_pinctrl_match);
static struct platform_driver sun9i_a80_pinctrl_driver = {
.probe = sun9i_a80_pinctrl_probe,
@@ -742,8 +741,4 @@ static struct platform_driver sun9i_a80_
.of_match_table = sun9i_a80_pinctrl_match,
},
};
-module_platform_driver(sun9i_a80_pinctrl_driver);
-
-MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
-MODULE_DESCRIPTION("Allwinner A80 pinctrl driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver(sun9i_a80_pinctrl_driver);

51
target/linux/sunxi/patches-4.9/0036-pinctrl-sunxi-Free-configs-in-pinctrl_map-only-if-it.patch
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@ -0,0 +1,51 @@
From 88f01a1bd0e0dbd01b65907023dbe53cf524ea2a Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 11 Nov 2016 10:35:10 +0800
Subject: pinctrl: sunxi: Free configs in pinctrl_map only if it is a config
map
In the recently refactored sunxi pinctrl library, we are only allocating
one set of pin configs for each pinmux setting node. When the pinctrl_map
structure is freed, the pin configs should also be freed. However the
code assumed the first map would contain the configs, which actually
never happens, as the mux function map gets added first.
The proper way to do this is to look through all the maps and free the
first one whose type is actually PIN_MAP_TYPE_CONFIGS_GROUP.
Also slightly expand the comment explaining this.
Fixes: f233dbca6227 ("pinctrl: sunxi: Rework the pin config building code")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -408,8 +408,21 @@ static void sunxi_pctrl_dt_free_map(stru
struct pinctrl_map *map,
unsigned num_maps)
{
- /* All the maps have the same pin config, free only the first one */
- kfree(map[0].data.configs.configs);
+ int i;
+
+ /* pin config is never in the first map */
+ for (i = 1; i < num_maps; i++) {
+ if (map[i].type != PIN_MAP_TYPE_CONFIGS_GROUP)
+ continue;
+
+ /*
+ * All the maps share the same pin config,
+ * free only the first one we find.
+ */
+ kfree(map[i].data.configs.configs);
+ break;
+ }
+
kfree(map);
}

40
target/linux/sunxi/patches-4.9/0037-pinctrl-sunxi-Fix-PIN_CONFIG_BIAS_PULL_-DOWN-UP-argu.patch
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@ -0,0 +1,40 @@
From 223dba00b4072efc590c7d648f230db1b44186b9 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 11 Nov 2016 17:50:34 +0800
Subject: pinctrl: sunxi: Fix PIN_CONFIG_BIAS_PULL_{DOWN,UP} argument
According to pinconf-generic.h, the argument for
PIN_CONFIG_BIAS_PULL_{DOWN,UP} is non-zero if the bias is enabled
with a pull up/down resistor, zero if it is directly connected
to VDD or ground.
Since Allwinner hardware uses a weak pull resistor internally,
the argument should be 1.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -291,12 +291,16 @@ static unsigned long *sunxi_pctrl_build_
if (sunxi_pctrl_has_bias_prop(node)) {
int pull = sunxi_pctrl_parse_bias_prop(node);
+ int arg = 0;
if (pull < 0) {
ret = pull;
goto err_free;
}
- pinconfig[idx++] = pinconf_to_config_packed(pull, 0);
+ if (pull != PIN_CONFIG_BIAS_DISABLE)
+ arg = 1; /* hardware uses weak pull resistors */
+
+ pinconfig[idx++] = pinconf_to_config_packed(pull, arg);
}

158
target/linux/sunxi/patches-4.9/0038-pinctrl-sunxi-Add-support-for-fetching-pinconf-setti.patch
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From c5fda170e87a4bdaeb278f7e50f7a1f654e94eb5 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 11 Nov 2016 17:50:35 +0800
Subject: pinctrl: sunxi: Add support for fetching pinconf settings from
hardware
The sunxi pinctrl driver only caches whatever pinconf setting was last
set on a given pingroup. This is not particularly helpful, nor is it
correct.
Fix this by actually reading the hardware registers and returning
the correct results or error codes. Also filter out unsupported
pinconf settings. Since this driver has a peculiar setup of 1 pin
per group, we can support both pin and pingroup pinconf setting
read back with the same code. The sunxi_pconf_reg helper and code
structure is inspired by pinctrl-msm.
With this done we can also claim to support generic pinconf, by
setting .is_generic = true in pinconf_ops.
Also remove the cached config value. The behavior of this was never
correct, as it only cached 1 setting instead of all of them. Since
we can now read back settings directly from the hardware, it is no
longer required.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 86 +++++++++++++++++++++++++++++++++--
drivers/pinctrl/sunxi/pinctrl-sunxi.h | 1 -
2 files changed, 81 insertions(+), 6 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -438,15 +438,91 @@ static const struct pinctrl_ops sunxi_pc
.get_group_pins = sunxi_pctrl_get_group_pins,
};
+static int sunxi_pconf_reg(unsigned pin, enum pin_config_param param,
+ u32 *offset, u32 *shift, u32 *mask)
+{
+ switch (param) {
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ *offset = sunxi_dlevel_reg(pin);
+ *shift = sunxi_dlevel_offset(pin);
+ *mask = DLEVEL_PINS_MASK;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_UP:
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ case PIN_CONFIG_BIAS_DISABLE:
+ *offset = sunxi_pull_reg(pin);
+ *shift = sunxi_pull_offset(pin);
+ *mask = PULL_PINS_MASK;
+ break;
+
+ default:
+ return -ENOTSUPP;
+ }
+
+ return 0;
+}
+
+static int sunxi_pconf_get(struct pinctrl_dev *pctldev, unsigned pin,
+ unsigned long *config)
+{
+ struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ enum pin_config_param param = pinconf_to_config_param(*config);
+ u32 offset, shift, mask, val;
+ u16 arg;
+ int ret;
+
+ pin -= pctl->desc->pin_base;
+
+ ret = sunxi_pconf_reg(pin, param, &offset, &shift, &mask);
+ if (ret < 0)
+ return ret;
+
+ val = (readl(pctl->membase + offset) >> shift) & mask;
+
+ switch (pinconf_to_config_param(*config)) {
+ case PIN_CONFIG_DRIVE_STRENGTH:
+ arg = (val + 1) * 10;
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_UP:
+ if (val != SUN4I_PINCTRL_PULL_UP)
+ return -EINVAL;
+ arg = 1; /* hardware is weak pull-up */
+ break;
+
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+ if (val != SUN4I_PINCTRL_PULL_DOWN)
+ return -EINVAL;
+ arg = 1; /* hardware is weak pull-down */
+ break;
+
+ case PIN_CONFIG_BIAS_DISABLE:
+ if (val != SUN4I_PINCTRL_NO_PULL)
+ return -EINVAL;
+ arg = 0;
+ break;
+
+ default:
+ /* sunxi_pconf_reg should catch anything unsupported */
+ WARN_ON(1);
+ return -ENOTSUPP;
+ }
+
+ *config = pinconf_to_config_packed(param, arg);
+
+ return 0;
+}
+
static int sunxi_pconf_group_get(struct pinctrl_dev *pctldev,
unsigned group,
unsigned long *config)
{
struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
+ struct sunxi_pinctrl_group *g = &pctl->groups[group];
- *config = pctl->groups[group].config;
-
- return 0;
+ /* We only support 1 pin per group. Chain it to the pin callback */
+ return sunxi_pconf_get(pctldev, g->pin, config);
}
static int sunxi_pconf_group_set(struct pinctrl_dev *pctldev,
@@ -508,8 +584,6 @@ static int sunxi_pconf_group_set(struct
default:
break;
}
- /* cache the config value */
- g->config = configs[i];
} /* for each config */
spin_unlock_irqrestore(&pctl->lock, flags);
@@ -518,6 +592,8 @@ static int sunxi_pconf_group_set(struct
}
static const struct pinconf_ops sunxi_pconf_ops = {
+ .is_generic = true,
+ .pin_config_get = sunxi_pconf_get,
.pin_config_group_get = sunxi_pconf_group_get,
.pin_config_group_set = sunxi_pconf_group_set,
};
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
@@ -109,7 +109,6 @@ struct sunxi_pinctrl_function {
struct sunxi_pinctrl_group {
const char *name;
- unsigned long config;
unsigned pin;
};

122
target/linux/sunxi/patches-4.9/0039-pinctrl-sunxi-Make-sunxi_pconf_group_set-use-sunxi_p.patch
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From 51814827190214986c452a166718bf12d32211c7 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 11 Nov 2016 17:50:36 +0800
Subject: pinctrl: sunxi: Make sunxi_pconf_group_set use sunxi_pconf_reg helper
The sunxi_pconf_reg helper introduced in the last patch gives us the
chance to rework sunxi_pconf_group_set to have it match the structure
of sunxi_pconf_(group_)get and make it easier to understand.
For each config to set, it:
1. checks if the parameter is supported.
2. checks if the argument is within limits.
3. converts argument to the register value.
4. writes to the register with spinlock held.
As a result the function now blocks unsupported config parameters,
instead of silently ignoring them.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 64 +++++++++++++++++------------------
1 file changed, 32 insertions(+), 32 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -532,23 +532,27 @@ static int sunxi_pconf_group_set(struct
{
struct sunxi_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct sunxi_pinctrl_group *g = &pctl->groups[group];
- unsigned long flags;
unsigned pin = g->pin - pctl->desc->pin_base;
- u32 val, mask;
- u16 strength;
- u8 dlevel;
int i;
- spin_lock_irqsave(&pctl->lock, flags);
-
for (i = 0; i < num_configs; i++) {
- switch (pinconf_to_config_param(configs[i])) {
+ enum pin_config_param param;
+ unsigned long flags;
+ u32 offset, shift, mask, reg;
+ u16 arg, val;
+ int ret;
+
+ param = pinconf_to_config_param(configs[i]);
+ arg = pinconf_to_config_argument(configs[i]);
+
+ ret = sunxi_pconf_reg(pin, param, &offset, &shift, &mask);
+ if (ret < 0)
+ return ret;
+
+ switch (param) {
case PIN_CONFIG_DRIVE_STRENGTH:
- strength = pinconf_to_config_argument(configs[i]);
- if (strength > 40) {
- spin_unlock_irqrestore(&pctl->lock, flags);
+ if (arg < 10 || arg > 40)
return -EINVAL;
- }
/*
* We convert from mA to what the register expects:
* 0: 10mA
@@ -556,37 +560,33 @@ static int sunxi_pconf_group_set(struct
* 2: 30mA
* 3: 40mA
*/
- dlevel = strength / 10 - 1;
- val = readl(pctl->membase + sunxi_dlevel_reg(pin));
- mask = DLEVEL_PINS_MASK << sunxi_dlevel_offset(pin);
- writel((val & ~mask)
- | dlevel << sunxi_dlevel_offset(pin),
- pctl->membase + sunxi_dlevel_reg(pin));
+ val = arg / 10 - 1;
break;
case PIN_CONFIG_BIAS_DISABLE:
- val = readl(pctl->membase + sunxi_pull_reg(pin));
- mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
- writel((val & ~mask),
- pctl->membase + sunxi_pull_reg(pin));
+ val = 0;
break;
case PIN_CONFIG_BIAS_PULL_UP:
- val = readl(pctl->membase + sunxi_pull_reg(pin));
- mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
- writel((val & ~mask) | 1 << sunxi_pull_offset(pin),
- pctl->membase + sunxi_pull_reg(pin));
+ if (arg == 0)
+ return -EINVAL;
+ val = 1;
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
- val = readl(pctl->membase + sunxi_pull_reg(pin));
- mask = PULL_PINS_MASK << sunxi_pull_offset(pin);
- writel((val & ~mask) | 2 << sunxi_pull_offset(pin),
- pctl->membase + sunxi_pull_reg(pin));
+ if (arg == 0)
+ return -EINVAL;
+ val = 2;
break;
default:
- break;
+ /* sunxi_pconf_reg should catch anything unsupported */
+ WARN_ON(1);
+ return -ENOTSUPP;
}
- } /* for each config */
- spin_unlock_irqrestore(&pctl->lock, flags);
+ spin_lock_irqsave(&pctl->lock, flags);
+ reg = readl(pctl->membase + offset);
+ reg &= ~(mask << shift);
+ writel(reg | val << shift, pctl->membase + offset);
+ spin_unlock_irqrestore(&pctl->lock, flags);
+ } /* for each config */
return 0;
}

171
target/linux/sunxi/patches-4.9/0040-pinctrl-sunxi-Add-support-for-interrupt-debouncing.patch
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From 7c926492d38a3feef4b4b29c91b7c03eb1b8b546 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Mon, 14 Nov 2016 21:53:03 +0100
Subject: pinctrl: sunxi: Add support for interrupt debouncing
The pin controller found in the Allwinner SoCs has support for interrupts
debouncing.
However, this is not done per-pin, preventing us from using the generic
pinconf binding for that, but per irq bank, which, depending on the SoC,
ranges from one to five.
Introduce a device-wide property to deal with this using a microsecond
resolution. We can re-use the per-pin input-debounce property for that, so
let's do it!
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
.../bindings/pinctrl/allwinner,sunxi-pinctrl.txt | 14 ++++
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 84 ++++++++++++++++++++++
drivers/pinctrl/sunxi/pinctrl-sunxi.h | 7 ++
3 files changed, 105 insertions(+)
--- a/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt
@@ -28,6 +28,20 @@ Required properties:
- reg: Should contain the register physical address and length for the
pin controller.
+- clocks: phandle to the clocks feeding the pin controller:
+ - "apb": the gated APB parent clock
+ - "hosc": the high frequency oscillator in the system
+ - "losc": the low frequency oscillator in the system
+
+Note: For backward compatibility reasons, the hosc and losc clocks are only
+required if you need to use the optional input-debounce property. Any new
+device tree should set them.
+
+Optional properties:
+ - input-debounce: Array of debouncing periods in microseconds. One period per
+ irq bank found in the controller. 0 if no setup required.
+
+
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices.
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -1122,6 +1122,88 @@ static int sunxi_pinctrl_build_state(str
return 0;
}
+static int sunxi_pinctrl_get_debounce_div(struct clk *clk, int freq, int *diff)
+{
+ unsigned long clock = clk_get_rate(clk);
+ unsigned int best_diff = ~0, best_div;
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ int cur_diff = abs(freq - (clock >> i));
+
+ if (cur_diff < best_diff) {
+ best_diff = cur_diff;
+ best_div = i;
+ }
+ }
+
+ *diff = best_diff;
+ return best_div;
+}
+
+static int sunxi_pinctrl_setup_debounce(struct sunxi_pinctrl *pctl,
+ struct device_node *node)
+{
+ unsigned int hosc_diff, losc_diff;
+ unsigned int hosc_div, losc_div;
+ struct clk *hosc, *losc;
+ u8 div, src;
+ int i, ret;
+
+ /* Deal with old DTs that didn't have the oscillators */
+ if (of_count_phandle_with_args(node, "clocks", "#clock-cells") != 3)
+ return 0;
+
+ /* If we don't have any setup, bail out */
+ if (!of_find_property(node, "input-debounce", NULL))
+ return 0;
+
+ losc = devm_clk_get(pctl->dev, "losc");
+ if (IS_ERR(losc))
+ return PTR_ERR(losc);
+
+ hosc = devm_clk_get(pctl->dev, "hosc");
+ if (IS_ERR(hosc))
+ return PTR_ERR(hosc);
+
+ for (i = 0; i < pctl->desc->irq_banks; i++) {
+ unsigned long debounce_freq;
+ u32 debounce;
+
+ ret = of_property_read_u32_index(node, "input-debounce",
+ i, &debounce);
+ if (ret)
+ return ret;
+
+ if (!debounce)
+ continue;
+
+ debounce_freq = DIV_ROUND_CLOSEST(USEC_PER_SEC, debounce);
+ losc_div = sunxi_pinctrl_get_debounce_div(losc,
+ debounce_freq,
+ &losc_diff);
+
+ hosc_div = sunxi_pinctrl_get_debounce_div(hosc,
+ debounce_freq,
+ &hosc_diff);
+
+ if (hosc_diff < losc_diff) {
+ div = hosc_div;
+ src = 1;
+ } else {
+ div = losc_div;
+ src = 0;
+ }
+
+ writel(src | div << 4,
+ pctl->membase +
+ sunxi_irq_debounce_reg_from_bank(i,
+ pctl->desc->irq_bank_base));
+ }
+
+ return 0;
+}
+
int sunxi_pinctrl_init(struct platform_device *pdev,
const struct sunxi_pinctrl_desc *desc)
{
@@ -1284,6 +1366,8 @@ int sunxi_pinctrl_init(struct platform_d
pctl);
}
+ sunxi_pinctrl_setup_debounce(pctl, node);
+
dev_info(&pdev->dev, "initialized sunXi PIO driver\n");
return 0;
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
@@ -69,6 +69,8 @@
#define IRQ_STATUS_IRQ_BITS 1
#define IRQ_STATUS_IRQ_MASK ((1 << IRQ_STATUS_IRQ_BITS) - 1)
+#define IRQ_DEBOUNCE_REG 0x218
+
#define IRQ_MEM_SIZE 0x20
#define IRQ_EDGE_RISING 0x00
@@ -265,6 +267,11 @@ static inline u32 sunxi_irq_ctrl_offset(
return irq_num * IRQ_CTRL_IRQ_BITS;
}
+static inline u32 sunxi_irq_debounce_reg_from_bank(u8 bank, unsigned bank_base)
+{
+ return IRQ_DEBOUNCE_REG + (bank_base + bank) * IRQ_MEM_SIZE;
+}
+
static inline u32 sunxi_irq_status_reg_from_bank(u8 bank, unsigned bank_base)
{
return IRQ_STATUS_REG + (bank_base + bank) * IRQ_MEM_SIZE;

40
target/linux/sunxi/patches-4.9/0041-pinctrl-sunxi-fix-theoretical-uninitialized-variable.patch
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From d8a22212737314cc02692cc90eda7d844fa20257 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 16 Nov 2016 15:18:18 +0100
Subject: pinctrl: sunxi: fix theoretical uninitialized variable access
gcc warns about a way that it could use an uninitialized variable:
drivers/pinctrl/sunxi/pinctrl-sunxi.c: In function 'sunxi_pinctrl_init':
drivers/pinctrl/sunxi/pinctrl-sunxi.c:1191:8: error: 'best_div' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This cannot really happen except if 'freq' is UINT_MAX and 'clock' is
zero, and both of these are forbidden. To shut up the warning anyway,
this changes the logic to initialize the return code to the first
divider value before looking at the others.
Fixes: 7c926492d38a ("pinctrl: sunxi: Add support for interrupt debouncing")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -1125,10 +1125,13 @@ static int sunxi_pinctrl_build_state(str
static int sunxi_pinctrl_get_debounce_div(struct clk *clk, int freq, int *diff)
{
unsigned long clock = clk_get_rate(clk);
- unsigned int best_diff = ~0, best_div;
+ unsigned int best_diff, best_div;
int i;
- for (i = 0; i < 8; i++) {
+ best_diff = abs(freq - clock);
+ best_div = 0;
+
+ for (i = 1; i < 8; i++) {
int cur_diff = abs(freq - (clock >> i));
if (cur_diff < best_diff) {

35
target/linux/sunxi/patches-4.9/0042-pinctrl-sunxi-Testing-the-wrong-variable.patch
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From b3cde198b17f504643cc1eeffc4623f03326f436 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 18 Nov 2016 14:35:57 +0300
Subject: pinctrl: sunxi: Testing the wrong variable
Smatch complains that we dereference "map" before testing it for NULL
which is true. We should be testing "*map" instead. Also on the error
path, we should free *map and set it to NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -398,13 +398,14 @@ static int sunxi_pctrl_dt_node_to_map(st
* map array
*/
*map = krealloc(*map, i * sizeof(struct pinctrl_map), GFP_KERNEL);
- if (!map)
+ if (!*map)
return -ENOMEM;
return 0;
err_free_map:
- kfree(map);
+ kfree(*map);
+ *map = NULL;
return ret;
}

42
target/linux/sunxi/patches-4.9/0043-pinctrl-sunxi-Don-t-enforce-bias-disable-for-now.patch
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From 2154d94b40ea2a5de05245521371d0461bb0d669 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@free-electrons.com>
Date: Mon, 23 Jan 2017 09:21:30 +0100
Subject: pinctrl: sunxi: Don't enforce bias disable (for now)
Commit 07fe64ba213f ("pinctrl: sunxi: Handle bias disable") actually
enforced enforced the disabling of the pull up/down resistors instead of
ignoring it like it was done before.
This was part of a wider rework to switch to the generic pinconf bindings,
and was meant to be merged together with DT patches that were switching to
it, and removing what was considered default values by both the binding and
the boards. This included no bias on a pin.
However, those DT patches were delayed to 4.11, which would be fine only
for a significant number boards having the bias setup wrong, which in turns
break the MMC on those boards (and possibly other devices too).
In order to avoid conflicts as much as possible, bring back the old
behaviour for 4.10, and we'll revert that commit once all the DT bits will
have landed.
Tested-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/sunxi/pinctrl-sunxi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -564,8 +564,7 @@ static int sunxi_pconf_group_set(struct
val = arg / 10 - 1;
break;
case PIN_CONFIG_BIAS_DISABLE:
- val = 0;
- break;
+ continue;
case PIN_CONFIG_BIAS_PULL_UP:
if (arg == 0)
return -EINVAL;
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