UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

Clock framework and driver fixes, all of which fix user-visible 

regressions. As usual most fixes are for platform-specific clock
 drivers, but there are also two fixes to the clk core after recent
 changes to the way that clock unregistration is handled.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJTeQLIAAoJEDqPOy9afJhJcE8QAIZShW4Go9JuA5E2cPb2PiUu
 IAm1BTAcbUj0B/sjieDm4q7HP1ZPrgsko4lbf3carAzfs3aWV03yAiILiGg5K4EB
 f0ifAARCmWy4iqryKL2KAUkpx+y8laxa6NMrby1IpVYqOluEI4AznehlAJDuhvI4
 6rBqLP1R3BjPduqXdnB/vWLLFRKK2TiWnuQu1qeBWz27NMm0bhvKEkmKwpyeklyb
 fnK+ImGn4TojQG12RfwnpDZUaYWba+HD50kBLi8aumlgdYscY+mVJnNXtya1V6hi
 datzqIJmnO32nYOiBlZezPY1L2yU/IaNN0Cn/tEyRSt74peDLLP6jsA+VzGXmHxo
 K93aLy/pWVkQsDhC2xSVL3FeevhG+2fSrcLdLAMj24ydFYMAXnviYch/opBeCFm4
 t3hJUtD1MfPHPAFCPFgkJoMWeQPEHOUTAJ80Sc1HN02RUTa61i2JBt19Qo46FYdM
 82QpHOReXVZOqJT1g11topv7ql3MFYUiesofmH3SCL35ufjkgI9yHkYRoJD6VSh9
 UwkMPLHfezmOs7Afy2q3XAxYjcdQSir4BZj6k4WqTWPJEqgKe75gLFJ9CbCCxVWx
 wy0hjsJ5tJX1arB0LT37CV8wY2GoHn73j2x+H+PXt8CT8sfJsGb6gVudyIqEqV66
 iZKcyhBUVjKeeBtrinq+
 =JwFU
 -----END PGP SIGNATURE-----

Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux

Pull clock framework fixes from Mike Turquette:
 "Clock framework and driver fixes, all of which fix user-visible
  regressions.

  As usual most fixes are for platform-specific clock drivers, but there
  are also two fixes to the clk core after recent changes to the way
  that clock unregistration is handled"

* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux:
  clk: tegra: Fix wrong value written to PLLE_AUX
  clk: shmobile: clk-mstp: change to using clock-indices
  clk: Fix slab corruption in clk_unregister()
  clk: Fix double free due to devm_clk_register()
  clk: socfpga: fix clock driver for 3.15
  clk: divider: Fix best div calculation for power-of-two and table dividers
  clk: bcm281xx: don't use unnamed structs or unions
This commit is contained in:
Linus Torvalds 2014-05-21 18:55:17 +09:00
parent b2e3432af1 d2c834abe2
commit 026d68be45
10 changed files with 151 additions and 128 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/clock/renesas,cpg-mstp-clocks.txt
View File

@ -43,7 +43,7 @@ Example
clock-output-names =
"tpu0", "mmcif1", "sdhi3", "sdhi2",
"sdhi1", "sdhi0", "mmcif0";
renesas,clock-indices = <
clock-indices = <
R8A7790_CLK_TPU0 R8A7790_CLK_MMCIF1 R8A7790_CLK_SDHI3
R8A7790_CLK_SDHI2 R8A7790_CLK_SDHI1 R8A7790_CLK_SDHI0
R8A7790_CLK_MMCIF0

33
drivers/clk/bcm/clk-kona-setup.c
View File

@ -27,7 +27,7 @@ LIST_HEAD(ccu_list); /* The list of set up CCUs */
static bool clk_requires_trigger(struct kona_clk *bcm_clk)
{
struct peri_clk_data *peri = bcm_clk->peri;
struct peri_clk_data *peri = bcm_clk->u.peri;
struct bcm_clk_sel *sel;
struct bcm_clk_div *div;
@ -63,7 +63,7 @@ static bool peri_clk_data_offsets_valid(struct kona_clk *bcm_clk)
u32 limit;
BUG_ON(bcm_clk->type != bcm_clk_peri);
peri = bcm_clk->peri;
peri = bcm_clk->u.peri;
name = bcm_clk->name;
range = bcm_clk->ccu->range;
@ -81,19 +81,19 @@ static bool peri_clk_data_offsets_valid(struct kona_clk *bcm_clk)
div = &peri->div;
if (divider_exists(div)) {
if (div->offset > limit) {
if (div->u.s.offset > limit) {
pr_err("%s: bad divider offset for %s (%u > %u)\n",
__func__, name, div->offset, limit);
__func__, name, div->u.s.offset, limit);
return false;
}
}
div = &peri->pre_div;
if (divider_exists(div)) {
if (div->offset > limit) {
if (div->u.s.offset > limit) {
pr_err("%s: bad pre-divider offset for %s "
"(%u > %u)\n",
__func__, name, div->offset, limit);
__func__, name, div->u.s.offset, limit);
return false;
}
}
@ -249,21 +249,22 @@ static bool div_valid(struct bcm_clk_div *div, const char *field_name,
{
if (divider_is_fixed(div)) {
/* Any fixed divider value but 0 is OK */
if (div->fixed == 0) {
if (div->u.fixed == 0) {
pr_err("%s: bad %s fixed value 0 for %s\n", __func__,
field_name, clock_name);
return false;
}
return true;
}
if (!bitfield_valid(div->shift, div->width, field_name, clock_name))
if (!bitfield_valid(div->u.s.shift, div->u.s.width,
field_name, clock_name))
return false;
if (divider_has_fraction(div))
if (div->frac_width > div->width) {
if (div->u.s.frac_width > div->u.s.width) {
pr_warn("%s: bad %s fraction width for %s (%u > %u)\n",
__func__, field_name, clock_name,
div->frac_width, div->width);
div->u.s.frac_width, div->u.s.width);
return false;
}
@ -278,7 +279,7 @@ static bool div_valid(struct bcm_clk_div *div, const char *field_name,
*/
static bool kona_dividers_valid(struct kona_clk *bcm_clk)
{
struct peri_clk_data *peri = bcm_clk->peri;
struct peri_clk_data *peri = bcm_clk->u.peri;
struct bcm_clk_div *div;
struct bcm_clk_div *pre_div;
u32 limit;
@ -295,7 +296,7 @@ static bool kona_dividers_valid(struct kona_clk *bcm_clk)
limit = BITS_PER_BYTE * sizeof(u32);
return div->frac_width + pre_div->frac_width <= limit;
return div->u.s.frac_width + pre_div->u.s.frac_width <= limit;
}
@ -328,7 +329,7 @@ peri_clk_data_valid(struct kona_clk *bcm_clk)
if (!peri_clk_data_offsets_valid(bcm_clk))
return false;
peri = bcm_clk->peri;
peri = bcm_clk->u.peri;
name = bcm_clk->name;
gate = &peri->gate;
if (gate_exists(gate) && !gate_valid(gate, "gate", name))
@ -588,12 +589,12 @@ static void bcm_clk_teardown(struct kona_clk *bcm_clk)
{
switch (bcm_clk->type) {
case bcm_clk_peri:
peri_clk_teardown(bcm_clk->data, &bcm_clk->init_data);
peri_clk_teardown(bcm_clk->u.data, &bcm_clk->init_data);
break;
default:
break;
}
bcm_clk->data = NULL;
bcm_clk->u.data = NULL;
bcm_clk->type = bcm_clk_none;
}
@ -644,7 +645,7 @@ struct clk *kona_clk_setup(struct ccu_data *ccu, const char *name,
break;
}
bcm_clk->type = type;
bcm_clk->data = data;
bcm_clk->u.data = data;
/* Make sure everything makes sense before we set it up */
if (!kona_clk_valid(bcm_clk)) {

64
drivers/clk/bcm/clk-kona.c
View File

@ -61,7 +61,7 @@ u64 do_div_round_closest(u64 dividend, unsigned long divisor)
/* Convert a divider into the scaled divisor value it represents. */
static inline u64 scaled_div_value(struct bcm_clk_div *div, u32 reg_div)
{
return (u64)reg_div + ((u64)1 << div->frac_width);
return (u64)reg_div + ((u64)1 << div->u.s.frac_width);
}
/*
@ -77,7 +77,7 @@ u64 scaled_div_build(struct bcm_clk_div *div, u32 div_value, u32 billionths)
BUG_ON(billionths >= BILLION);
combined = (u64)div_value * BILLION + billionths;
combined <<= div->frac_width;
combined <<= div->u.s.frac_width;
return do_div_round_closest(combined, BILLION);
}
@ -87,7 +87,7 @@ static inline u64
scaled_div_min(struct bcm_clk_div *div)
{
if (divider_is_fixed(div))
return (u64)div->fixed;
return (u64)div->u.fixed;
return scaled_div_value(div, 0);
}
@ -98,9 +98,9 @@ u64 scaled_div_max(struct bcm_clk_div *div)
u32 reg_div;
if (divider_is_fixed(div))
return (u64)div->fixed;
return (u64)div->u.fixed;
reg_div = ((u32)1 << div->width) - 1;
reg_div = ((u32)1 << div->u.s.width) - 1;
return scaled_div_value(div, reg_div);
}
@ -115,7 +115,7 @@ divider(struct bcm_clk_div *div, u64 scaled_div)
BUG_ON(scaled_div < scaled_div_min(div));
BUG_ON(scaled_div > scaled_div_max(div));
return (u32)(scaled_div - ((u64)1 << div->frac_width));
return (u32)(scaled_div - ((u64)1 << div->u.s.frac_width));
}
/* Return a rate scaled for use when dividing by a scaled divisor. */
@ -125,7 +125,7 @@ scale_rate(struct bcm_clk_div *div, u32 rate)
if (divider_is_fixed(div))
return (u64)rate;
return (u64)rate << div->frac_width;
return (u64)rate << div->u.s.frac_width;
}
/* CCU access */
@ -398,14 +398,14 @@ static u64 divider_read_scaled(struct ccu_data *ccu, struct bcm_clk_div *div)
u32 reg_div;
if (divider_is_fixed(div))
return (u64)div->fixed;
return (u64)div->u.fixed;
flags = ccu_lock(ccu);
reg_val = __ccu_read(ccu, div->offset);
reg_val = __ccu_read(ccu, div->u.s.offset);
ccu_unlock(ccu, flags);
/* Extract the full divider field from the register value */
reg_div = bitfield_extract(reg_val, div->shift, div->width);
reg_div = bitfield_extract(reg_val, div->u.s.shift, div->u.s.width);
/* Return the scaled divisor value it represents */
return scaled_div_value(div, reg_div);
@ -433,16 +433,17 @@ static int __div_commit(struct ccu_data *ccu, struct bcm_clk_gate *gate,
* state was defined in the device tree, we just find out
* what its current value is rather than updating it.
*/
if (div->scaled_div == BAD_SCALED_DIV_VALUE) {
reg_val = __ccu_read(ccu, div->offset);
reg_div = bitfield_extract(reg_val, div->shift, div->width);
div->scaled_div = scaled_div_value(div, reg_div);
if (div->u.s.scaled_div == BAD_SCALED_DIV_VALUE) {
reg_val = __ccu_read(ccu, div->u.s.offset);
reg_div = bitfield_extract(reg_val, div->u.s.shift,
div->u.s.width);
div->u.s.scaled_div = scaled_div_value(div, reg_div);
return 0;
}
/* Convert the scaled divisor to the value we need to record */
reg_div = divider(div, div->scaled_div);
reg_div = divider(div, div->u.s.scaled_div);
/* Clock needs to be enabled before changing the rate */
enabled = __is_clk_gate_enabled(ccu, gate);
@ -452,9 +453,10 @@ static int __div_commit(struct ccu_data *ccu, struct bcm_clk_gate *gate,
}
/* Replace the divider value and record the result */
reg_val = __ccu_read(ccu, div->offset);
reg_val = bitfield_replace(reg_val, div->shift, div->width, reg_div);
__ccu_write(ccu, div->offset, reg_val);
reg_val = __ccu_read(ccu, div->u.s.offset);
reg_val = bitfield_replace(reg_val, div->u.s.shift, div->u.s.width,
reg_div);
__ccu_write(ccu, div->u.s.offset, reg_val);
/* If the trigger fails we still want to disable the gate */
if (!__clk_trigger(ccu, trig))
@ -490,11 +492,11 @@ static int divider_write(struct ccu_data *ccu, struct bcm_clk_gate *gate,
BUG_ON(divider_is_fixed(div));
previous = div->scaled_div;
previous = div->u.s.scaled_div;
if (previous == scaled_div)
return 0; /* No change */
div->scaled_div = scaled_div;
div->u.s.scaled_div = scaled_div;
flags = ccu_lock(ccu);
__ccu_write_enable(ccu);
@ -505,7 +507,7 @@ static int divider_write(struct ccu_data *ccu, struct bcm_clk_gate *gate,
ccu_unlock(ccu, flags);
if (ret)
div->scaled_div = previous; /* Revert the change */
div->u.s.scaled_div = previous; /* Revert the change */
return ret;
@ -802,7 +804,7 @@ static int selector_write(struct ccu_data *ccu, struct bcm_clk_gate *gate,
static int kona_peri_clk_enable(struct clk_hw *hw)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
struct bcm_clk_gate *gate = &bcm_clk->u.peri->gate;
return clk_gate(bcm_clk->ccu, bcm_clk->name, gate, true);
}
@ -810,7 +812,7 @@ static int kona_peri_clk_enable(struct clk_hw *hw)
static void kona_peri_clk_disable(struct clk_hw *hw)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
struct bcm_clk_gate *gate = &bcm_clk->u.peri->gate;
(void)clk_gate(bcm_clk->ccu, bcm_clk->name, gate, false);
}
@ -818,7 +820,7 @@ static void kona_peri_clk_disable(struct clk_hw *hw)
static int kona_peri_clk_is_enabled(struct clk_hw *hw)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct bcm_clk_gate *gate = &bcm_clk->peri->gate;
struct bcm_clk_gate *gate = &bcm_clk->u.peri->gate;
return is_clk_gate_enabled(bcm_clk->ccu, gate) ? 1 : 0;
}
@ -827,7 +829,7 @@ static unsigned long kona_peri_clk_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct peri_clk_data *data = bcm_clk->peri;
struct peri_clk_data *data = bcm_clk->u.peri;
return clk_recalc_rate(bcm_clk->ccu, &data->div, &data->pre_div,
parent_rate);
@ -837,20 +839,20 @@ static long kona_peri_clk_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *parent_rate)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct bcm_clk_div *div = &bcm_clk->peri->div;
struct bcm_clk_div *div = &bcm_clk->u.peri->div;
if (!divider_exists(div))
return __clk_get_rate(hw->clk);
/* Quietly avoid a zero rate */
return round_rate(bcm_clk->ccu, div, &bcm_clk->peri->pre_div,
return round_rate(bcm_clk->ccu, div, &bcm_clk->u.peri->pre_div,
rate ? rate : 1, *parent_rate, NULL);
}
static int kona_peri_clk_set_parent(struct clk_hw *hw, u8 index)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct peri_clk_data *data = bcm_clk->peri;
struct peri_clk_data *data = bcm_clk->u.peri;
struct bcm_clk_sel *sel = &data->sel;
struct bcm_clk_trig *trig;
int ret;
@ -884,7 +886,7 @@ static int kona_peri_clk_set_parent(struct clk_hw *hw, u8 index)
static u8 kona_peri_clk_get_parent(struct clk_hw *hw)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct peri_clk_data *data = bcm_clk->peri;
struct peri_clk_data *data = bcm_clk->u.peri;
u8 index;
index = selector_read_index(bcm_clk->ccu, &data->sel);
@ -897,7 +899,7 @@ static int kona_peri_clk_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct kona_clk *bcm_clk = to_kona_clk(hw);
struct peri_clk_data *data = bcm_clk->peri;
struct peri_clk_data *data = bcm_clk->u.peri;
struct bcm_clk_div *div = &data->div;
u64 scaled_div = 0;
int ret;
@ -958,7 +960,7 @@ struct clk_ops kona_peri_clk_ops = {
static bool __peri_clk_init(struct kona_clk *bcm_clk)
{
struct ccu_data *ccu = bcm_clk->ccu;
struct peri_clk_data *peri = bcm_clk->peri;
struct peri_clk_data *peri = bcm_clk->u.peri;
const char *name = bcm_clk->name;
struct bcm_clk_trig *trig;

28
drivers/clk/bcm/clk-kona.h
View File

@ -57,7 +57,7 @@
#define divider_exists(div) FLAG_TEST(div, DIV, EXISTS)
#define divider_is_fixed(div) FLAG_TEST(div, DIV, FIXED)
#define divider_has_fraction(div) (!divider_is_fixed(div) && \
(div)->frac_width > 0)
(div)->u.s.frac_width > 0)
#define selector_exists(sel) ((sel)->width != 0)
#define trigger_exists(trig) FLAG_TEST(trig, TRIG, EXISTS)
@ -244,9 +244,9 @@ struct bcm_clk_div {
u32 frac_width; /* field fraction width */
u64 scaled_div; /* scaled divider value */
};
} s;
u32 fixed; /* non-zero fixed divider value */
};
} u;
u32 flags; /* BCM_CLK_DIV_FLAGS_* below */
};
@ -263,28 +263,28 @@ struct bcm_clk_div {
/* A fixed (non-zero) divider */
#define FIXED_DIVIDER(_value) \
{ \
.fixed = (_value), \
.u.fixed = (_value), \
.flags = FLAG(DIV, EXISTS)|FLAG(DIV, FIXED), \
}
/* A divider with an integral divisor */
#define DIVIDER(_offset, _shift, _width) \
{ \
.offset = (_offset), \
.shift = (_shift), \
.width = (_width), \
.scaled_div = BAD_SCALED_DIV_VALUE, \
.u.s.offset = (_offset), \
.u.s.shift = (_shift), \
.u.s.width = (_width), \
.u.s.scaled_div = BAD_SCALED_DIV_VALUE, \
.flags = FLAG(DIV, EXISTS), \
}
/* A divider whose divisor has an integer and fractional part */
#define FRAC_DIVIDER(_offset, _shift, _width, _frac_width) \
{ \
.offset = (_offset), \
.shift = (_shift), \
.width = (_width), \
.frac_width = (_frac_width), \
.scaled_div = BAD_SCALED_DIV_VALUE, \
.u.s.offset = (_offset), \
.u.s.shift = (_shift), \
.u.s.width = (_width), \
.u.s.frac_width = (_frac_width), \
.u.s.scaled_div = BAD_SCALED_DIV_VALUE, \
.flags = FLAG(DIV, EXISTS), \
}
@ -380,7 +380,7 @@ struct kona_clk {
union {
void *data;
struct peri_clk_data *peri;
};
} u;
};
#define to_kona_clk(_hw) \
container_of(_hw, struct kona_clk, hw)

37
drivers/clk/clk-divider.c
View File

@ -144,6 +144,37 @@ static bool _is_valid_div(struct clk_divider *divider, unsigned int div)
return true;
}
static int _round_up_table(const struct clk_div_table *table, int div)
{
const struct clk_div_table *clkt;
int up = _get_table_maxdiv(table);
for (clkt = table; clkt->div; clkt++) {
if (clkt->div == div)
return clkt->div;
else if (clkt->div < div)
continue;
if ((clkt->div - div) < (up - div))
up = clkt->div;
}
return up;
}
static int _div_round_up(struct clk_divider *divider,
unsigned long parent_rate, unsigned long rate)
{
int div = DIV_ROUND_UP(parent_rate, rate);
if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
div = __roundup_pow_of_two(div);
if (divider->table)
div = _round_up_table(divider->table, div);
return div;
}
static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
unsigned long *best_parent_rate)
{
@ -159,7 +190,7 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
if (!(__clk_get_flags(hw->clk) & CLK_SET_RATE_PARENT)) {
parent_rate = *best_parent_rate;
bestdiv = DIV_ROUND_UP(parent_rate, rate);
bestdiv = _div_round_up(divider, parent_rate, rate);
bestdiv = bestdiv == 0 ? 1 : bestdiv;
bestdiv = bestdiv > maxdiv ? maxdiv : bestdiv;
return bestdiv;
@ -219,6 +250,10 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
u32 val;
div = DIV_ROUND_UP(parent_rate, rate);
if (!_is_valid_div(divider, div))
return -EINVAL;
value = _get_val(divider, div);
if (value > div_mask(divider))

74
drivers/clk/clk.c
View File

@ -1984,9 +1984,28 @@ struct clk *__clk_register(struct device *dev, struct clk_hw *hw)
}
EXPORT_SYMBOL_GPL(__clk_register);
static int _clk_register(struct device *dev, struct clk_hw *hw, struct clk *clk)
/**
* clk_register - allocate a new clock, register it and return an opaque cookie
* @dev: device that is registering this clock
* @hw: link to hardware-specific clock data
*
* clk_register is the primary interface for populating the clock tree with new
* clock nodes. It returns a pointer to the newly allocated struct clk which
* cannot be dereferenced by driver code but may be used in conjuction with the
* rest of the clock API. In the event of an error clk_register will return an
* error code; drivers must test for an error code after calling clk_register.
*/
struct clk *clk_register(struct device *dev, struct clk_hw *hw)
{
int i, ret;
struct clk *clk;
clk = kzalloc(sizeof(*clk), GFP_KERNEL);
if (!clk) {
pr_err("%s: could not allocate clk\n", __func__);
ret = -ENOMEM;
goto fail_out;
}
clk->name = kstrdup(hw->init->name, GFP_KERNEL);
if (!clk->name) {
@ -2026,7 +2045,7 @@ static int _clk_register(struct device *dev, struct clk_hw *hw, struct clk *clk)
ret = __clk_init(dev, clk);
if (!ret)
return 0;
return clk;
fail_parent_names_copy:
while (--i >= 0)
@ -2035,36 +2054,6 @@ fail_parent_names_copy:
fail_parent_names:
kfree(clk->name);
fail_name:
return ret;
}
/**
* clk_register - allocate a new clock, register it and return an opaque cookie
* @dev: device that is registering this clock
* @hw: link to hardware-specific clock data
*
* clk_register is the primary interface for populating the clock tree with new
* clock nodes. It returns a pointer to the newly allocated struct clk which
* cannot be dereferenced by driver code but may be used in conjuction with the
* rest of the clock API. In the event of an error clk_register will return an
* error code; drivers must test for an error code after calling clk_register.
*/
struct clk *clk_register(struct device *dev, struct clk_hw *hw)
{
int ret;
struct clk *clk;
clk = kzalloc(sizeof(*clk), GFP_KERNEL);
if (!clk) {
pr_err("%s: could not allocate clk\n", __func__);
ret = -ENOMEM;
goto fail_out;
}
ret = _clk_register(dev, hw, clk);
if (!ret)
return clk;
kfree(clk);
fail_out:
return ERR_PTR(ret);
@ -2151,9 +2140,10 @@ void clk_unregister(struct clk *clk)
if (!hlist_empty(&clk->children)) {
struct clk *child;
struct hlist_node *t;
/* Reparent all children to the orphan list. */
hlist_for_each_entry(child, &clk->children, child_node)
hlist_for_each_entry_safe(child, t, &clk->children, child_node)
clk_set_parent(child, NULL);
}
@ -2173,7 +2163,7 @@ EXPORT_SYMBOL_GPL(clk_unregister);
static void devm_clk_release(struct device *dev, void *res)
{
clk_unregister(res);
clk_unregister(*(struct clk **)res);
}
/**
@ -2188,18 +2178,18 @@ static void devm_clk_release(struct device *dev, void *res)
struct clk *devm_clk_register(struct device *dev, struct clk_hw *hw)
{
struct clk *clk;
int ret;
struct clk **clkp;
clk = devres_alloc(devm_clk_release, sizeof(*clk), GFP_KERNEL);
if (!clk)
clkp = devres_alloc(devm_clk_release, sizeof(*clkp), GFP_KERNEL);
if (!clkp)
return ERR_PTR(-ENOMEM);
ret = _clk_register(dev, hw, clk);
if (!ret) {
devres_add(dev, clk);
clk = clk_register(dev, hw);
if (!IS_ERR(clk)) {
*clkp = clk;
devres_add(dev, clkp);
} else {
devres_free(clk);
clk = ERR_PTR(ret);
devres_free(clkp);
}
return clk;

9
drivers/clk/shmobile/clk-mstp.c
View File

@ -156,6 +156,7 @@ cpg_mstp_clock_register(const char *name, const char *parent_name,
static void __init cpg_mstp_clocks_init(struct device_node *np)
{
struct mstp_clock_group *group;
const char *idxname;
struct clk **clks;
unsigned int i;
@ -184,6 +185,11 @@ static void __init cpg_mstp_clocks_init(struct device_node *np)
for (i = 0; i < MSTP_MAX_CLOCKS; ++i)
clks[i] = ERR_PTR(-ENOENT);
if (of_find_property(np, "clock-indices", &i))
idxname = "clock-indices";
else
idxname = "renesas,clock-indices";
for (i = 0; i < MSTP_MAX_CLOCKS; ++i) {
const char *parent_name;
const char *name;
@ -197,8 +203,7 @@ static void __init cpg_mstp_clocks_init(struct device_node *np)
continue;
parent_name = of_clk_get_parent_name(np, i);
ret = of_property_read_u32_index(np, "renesas,clock-indices", i,
&clkidx);
ret = of_property_read_u32_index(np, idxname, i, &clkidx);
if (parent_name == NULL || ret < 0)
break;

7
drivers/clk/socfpga/clk-pll.c
View File

@ -20,6 +20,7 @@
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "clk.h"
@ -43,6 +44,8 @@
#define to_socfpga_clk(p) container_of(p, struct socfpga_pll, hw.hw)
void __iomem *clk_mgr_base_addr;
static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
unsigned long parent_rate)
{
@ -87,6 +90,7 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
const char *clk_name = node->name;
const char *parent_name[SOCFPGA_MAX_PARENTS];
struct clk_init_data init;
struct device_node *clkmgr_np;
int rc;
int i = 0;
@ -96,6 +100,9 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
if (WARN_ON(!pll_clk))
return NULL;
clkmgr_np = of_find_compatible_node(NULL, NULL, "altr,clk-mgr");
clk_mgr_base_addr = of_iomap(clkmgr_np, 0);
BUG_ON(!clk_mgr_base_addr);
pll_clk->hw.reg = clk_mgr_base_addr + reg;
of_property_read_string(node, "clock-output-names", &clk_name);

23
drivers/clk/socfpga/clk.c
View File

@ -17,28 +17,11 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include "clk.h"
void __iomem *clk_mgr_base_addr;
static const struct of_device_id socfpga_child_clocks[] __initconst = {
{ .compatible = "altr,socfpga-pll-clock", socfpga_pll_init, },
{ .compatible = "altr,socfpga-perip-clk", socfpga_periph_init, },
{ .compatible = "altr,socfpga-gate-clk", socfpga_gate_init, },
{},
};
static void __init socfpga_clkmgr_init(struct device_node *node)
{
clk_mgr_base_addr = of_iomap(node, 0);
of_clk_init(socfpga_child_clocks);
}
CLK_OF_DECLARE(socfpga_mgr, "altr,clk-mgr", socfpga_clkmgr_init);
CLK_OF_DECLARE(socfpga_pll_clk, "altr,socfpga-pll-clock", socfpga_pll_init);
CLK_OF_DECLARE(socfpga_perip_clk, "altr,socfpga-perip-clk", socfpga_periph_init);
CLK_OF_DECLARE(socfpga_gate_clk, "altr,socfpga-gate-clk", socfpga_gate_init);

2
drivers/clk/tegra/clk-pll.c
View File

@ -1718,7 +1718,7 @@ struct clk *tegra_clk_register_plle_tegra114(const char *name,
"pll_re_vco");
} else {
val_aux &= ~(PLLE_AUX_PLLRE_SEL | PLLE_AUX_PLLP_SEL);
pll_writel(val, pll_params->aux_reg, pll);
pll_writel(val_aux, pll_params->aux_reg, pll);
}
clk = _tegra_clk_register_pll(pll, name, parent_name, flags,