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clk: mmp: Switch to use struct u32_fract instead of custom one

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The struct mmp_clk_factor_tbl repeats the generic struct u32_fract.
Kill the custom one and use the generic one instead.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Duje Mihanović <duje.mihanovic@skole.hr>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/r/20241104-pxa1908-lkml-v13-1-e050609b8d6c@skole.hr
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Andy Shevchenko 2024-11-04 17:37:03 +01:00 committed by Stephen Boyd
parent 9852d85ec9
commit 4d6da8233b
6 changed files with 51 additions and 56 deletions
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57
drivers/clk/mmp/clk-frac.c
View File

@ -26,14 +26,15 @@ static long clk_factor_round_rate(struct clk_hw *hw, unsigned long drate,
{
struct mmp_clk_factor *factor = to_clk_factor(hw);
u64 rate = 0, prev_rate;
struct u32_fract *d;
int i;
for (i = 0; i < factor->ftbl_cnt; i++) {
prev_rate = rate;
rate = *prate;
rate *= factor->ftbl[i].den;
do_div(rate, factor->ftbl[i].num * factor->masks->factor);
d = &factor->ftbl[i];
prev_rate = rate;
rate = (u64)(*prate) * d->denominator;
do_div(rate, d->numerator * factor->masks->factor);
if (rate > drate)
break;
}
@ -52,23 +53,22 @@ static unsigned long clk_factor_recalc_rate(struct clk_hw *hw,
{
struct mmp_clk_factor *factor = to_clk_factor(hw);
struct mmp_clk_factor_masks *masks = factor->masks;
unsigned int val, num, den;
struct u32_fract d;
unsigned int val;
u64 rate;
val = readl_relaxed(factor->base);
/* calculate numerator */
num = (val >> masks->num_shift) & masks->num_mask;
d.numerator = (val >> masks->num_shift) & masks->num_mask;
/* calculate denominator */
den = (val >> masks->den_shift) & masks->den_mask;
if (!den)
d.denominator = (val >> masks->den_shift) & masks->den_mask;
if (!d.denominator)
return 0;
rate = parent_rate;
rate *= den;
do_div(rate, num * factor->masks->factor);
rate = (u64)parent_rate * d.denominator;
do_div(rate, d.numerator * factor->masks->factor);
return rate;
}
@ -82,18 +82,18 @@ static int clk_factor_set_rate(struct clk_hw *hw, unsigned long drate,
int i;
unsigned long val;
unsigned long flags = 0;
struct u32_fract *d;
u64 rate = 0;
for (i = 0; i < factor->ftbl_cnt; i++) {
rate = prate;
rate *= factor->ftbl[i].den;
do_div(rate, factor->ftbl[i].num * factor->masks->factor);
d = &factor->ftbl[i];
rate = (u64)prate * d->denominator;
do_div(rate, d->numerator * factor->masks->factor);
if (rate > drate)
break;
}
if (i > 0)
i--;
d = i ? &factor->ftbl[i - 1] : &factor->ftbl[0];
if (factor->lock)
spin_lock_irqsave(factor->lock, flags);
@ -101,10 +101,10 @@ static int clk_factor_set_rate(struct clk_hw *hw, unsigned long drate,
val = readl_relaxed(factor->base);
val &= ~(masks->num_mask << masks->num_shift);
val |= (factor->ftbl[i].num & masks->num_mask) << masks->num_shift;
val |= (d->numerator & masks->num_mask) << masks->num_shift;
val &= ~(masks->den_mask << masks->den_shift);
val |= (factor->ftbl[i].den & masks->den_mask) << masks->den_shift;
val |= (d->denominator & masks->den_mask) << masks->den_shift;
writel_relaxed(val, factor->base);
@ -118,7 +118,8 @@ static int clk_factor_init(struct clk_hw *hw)
{
struct mmp_clk_factor *factor = to_clk_factor(hw);
struct mmp_clk_factor_masks *masks = factor->masks;
u32 val, num, den;
struct u32_fract d;
u32 val;
int i;
unsigned long flags = 0;
@ -128,23 +129,22 @@ static int clk_factor_init(struct clk_hw *hw)
val = readl(factor->base);
/* calculate numerator */
num = (val >> masks->num_shift) & masks->num_mask;
d.numerator = (val >> masks->num_shift) & masks->num_mask;
/* calculate denominator */
den = (val >> masks->den_shift) & masks->den_mask;
d.denominator = (val >> masks->den_shift) & masks->den_mask;
for (i = 0; i < factor->ftbl_cnt; i++)
if (den == factor->ftbl[i].den && num == factor->ftbl[i].num)
if (d.denominator == factor->ftbl[i].denominator &&
d.numerator == factor->ftbl[i].numerator)
break;
if (i >= factor->ftbl_cnt) {
val &= ~(masks->num_mask << masks->num_shift);
val |= (factor->ftbl[0].num & masks->num_mask) <<
masks->num_shift;
val |= (factor->ftbl[0].numerator & masks->num_mask) << masks->num_shift;
val &= ~(masks->den_mask << masks->den_shift);
val |= (factor->ftbl[0].den & masks->den_mask) <<
masks->den_shift;
val |= (factor->ftbl[0].denominator & masks->den_mask) << masks->den_shift;
}
if (!(val & masks->enable_mask) || i >= factor->ftbl_cnt) {
@ -168,8 +168,7 @@ static const struct clk_ops clk_factor_ops = {
struct clk *mmp_clk_register_factor(const char *name, const char *parent_name,
unsigned long flags, void __iomem *base,
struct mmp_clk_factor_masks *masks,
struct mmp_clk_factor_tbl *ftbl,
unsigned int ftbl_cnt, spinlock_t *lock)
struct u32_fract *ftbl, unsigned int ftbl_cnt, spinlock_t *lock)
{
struct mmp_clk_factor *factor;
struct clk_init_data init;

26
drivers/clk/mmp/clk-of-mmp2.c
View File

@ -143,9 +143,9 @@ static struct mmp_clk_factor_masks uart_factor_masks = {
.den_shift = 0,
};
static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
{.num = 8125, .den = 1536}, /*14.745MHZ */
{.num = 3521, .den = 689}, /*19.23MHZ */
static struct u32_fract uart_factor_tbl[] = {
{ .numerator = 8125, .denominator = 1536 }, /* 14.745MHZ */
{ .numerator = 3521, .denominator = 689 }, /* 19.23MHZ */
};
static struct mmp_clk_factor_masks i2s_factor_masks = {
@ -157,16 +157,16 @@ static struct mmp_clk_factor_masks i2s_factor_masks = {
.enable_mask = 0xd0000000,
};
static struct mmp_clk_factor_tbl i2s_factor_tbl[] = {
{.num = 24868, .den = 511}, /* 2.0480 MHz */
{.num = 28003, .den = 793}, /* 2.8224 MHz */
{.num = 24941, .den = 1025}, /* 4.0960 MHz */
{.num = 28003, .den = 1586}, /* 5.6448 MHz */
{.num = 31158, .den = 2561}, /* 8.1920 MHz */
{.num = 16288, .den = 1845}, /* 11.2896 MHz */
{.num = 20772, .den = 2561}, /* 12.2880 MHz */
{.num = 8144, .den = 1845}, /* 22.5792 MHz */
{.num = 10386, .den = 2561}, /* 24.5760 MHz */
static struct u32_fract i2s_factor_tbl[] = {
{ .numerator = 24868, .denominator = 511 }, /* 2.0480 MHz */
{ .numerator = 28003, .denominator = 793 }, /* 2.8224 MHz */
{ .numerator = 24941, .denominator = 1025 }, /* 4.0960 MHz */
{ .numerator = 28003, .denominator = 1586 }, /* 5.6448 MHz */
{ .numerator = 31158, .denominator = 2561 }, /* 8.1920 MHz */
{ .numerator = 16288, .denominator = 1845 }, /* 11.2896 MHz */
{ .numerator = 20772, .denominator = 2561 }, /* 12.2880 MHz */
{ .numerator = 8144, .denominator = 1845 }, /* 22.5792 MHz */
{ .numerator = 10386, .denominator = 2561 }, /* 24.5760 MHz */
};
static DEFINE_SPINLOCK(acgr_lock);

4
drivers/clk/mmp/clk-of-pxa168.c
View File

@ -106,8 +106,8 @@ static struct mmp_clk_factor_masks uart_factor_masks = {
.den_shift = 0,
};
static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
{.num = 8125, .den = 1536}, /*14.745MHZ */
static struct u32_fract uart_factor_tbl[] = {
{ .numerator = 8125, .denominator = 1536 }, /* 14.745MHZ */
};
static void pxa168_pll_init(struct pxa168_clk_unit *pxa_unit)

6
drivers/clk/mmp/clk-of-pxa1928.c
View File

@ -61,9 +61,9 @@ static struct mmp_clk_factor_masks uart_factor_masks = {
.den_shift = 0,
};
static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
{.num = 832, .den = 234}, /*58.5MHZ */
{.num = 1, .den = 1}, /*26MHZ */
static struct u32_fract uart_factor_tbl[] = {
{ .numerator = 832, .denominator = 234 }, /* 58.5MHZ */
{ .numerator = 1, .denominator = 1 }, /* 26MHZ */
};
static void pxa1928_pll_init(struct pxa1928_clk_unit *pxa_unit)

4
drivers/clk/mmp/clk-of-pxa910.c
View File

@ -86,8 +86,8 @@ static struct mmp_clk_factor_masks uart_factor_masks = {
.den_shift = 0,
};
static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
{.num = 8125, .den = 1536}, /*14.745MHZ */
static struct u32_fract uart_factor_tbl[] = {
{ .numerator = 8125, .denominator = 1536 }, /* 14.745MHZ */
};
static void pxa910_pll_init(struct pxa910_clk_unit *pxa_unit)

10
drivers/clk/mmp/clk.h
View File

@ -3,6 +3,7 @@
#define __MACH_MMP_CLK_H
#include <linux/clk-provider.h>
#include <linux/math.h>
#include <linux/pm_domain.h>
#include <linux/clkdev.h>
@ -20,16 +21,11 @@ struct mmp_clk_factor_masks {
unsigned int enable_mask;
};
struct mmp_clk_factor_tbl {
unsigned int num;
unsigned int den;
};
struct mmp_clk_factor {
struct clk_hw hw;
void __iomem *base;
struct mmp_clk_factor_masks *masks;
struct mmp_clk_factor_tbl *ftbl;
struct u32_fract *ftbl;
unsigned int ftbl_cnt;
spinlock_t *lock;
};
@ -37,7 +33,7 @@ struct mmp_clk_factor {
extern struct clk *mmp_clk_register_factor(const char *name,
const char *parent_name, unsigned long flags,
void __iomem *base, struct mmp_clk_factor_masks *masks,
struct mmp_clk_factor_tbl *ftbl, unsigned int ftbl_cnt,
struct u32_fract *ftbl, unsigned int ftbl_cnt,
spinlock_t *lock);
/* Clock type "mix" */