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path: root/drivers/clk/socfpga/clk-periph-s10.c
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Diffstat (limited to 'drivers/clk/socfpga/clk-periph-s10.c')
-rw-r--r--drivers/clk/socfpga/clk-periph-s10.c180
1 files changed, 144 insertions, 36 deletions
diff --git a/drivers/clk/socfpga/clk-periph-s10.c b/drivers/clk/socfpga/clk-periph-s10.c
index 568f59b58ddf..f12ca43ffe7c 100644
--- a/drivers/clk/socfpga/clk-periph-s10.c
+++ b/drivers/clk/socfpga/clk-periph-s10.c
@@ -1,9 +1,10 @@
-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2017, Intel Corporation
*/
#include <linux/slab.h>
#include <linux/clk-provider.h>
+#include <linux/io.h>
#include "stratix10-clk.h"
#include "clk.h"
@@ -14,6 +15,21 @@
#define to_periph_clk(p) container_of(p, struct socfpga_periph_clk, hw.hw)
+static unsigned long n5x_clk_peri_c_clk_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct socfpga_periph_clk *socfpgaclk = to_periph_clk(hwclk);
+ unsigned long div;
+ unsigned long shift = socfpgaclk->shift;
+ u32 val;
+
+ val = readl(socfpgaclk->hw.reg);
+ val &= (0x1f << shift);
+ div = (val >> shift) + 1;
+
+ return parent_rate / div;
+}
+
static unsigned long clk_peri_c_clk_recalc_rate(struct clk_hw *hwclk,
unsigned long parent_rate)
{
@@ -37,7 +53,7 @@ static unsigned long clk_peri_cnt_clk_recalc_rate(struct clk_hw *hwclk,
if (socfpgaclk->fixed_div) {
div = socfpgaclk->fixed_div;
} else {
- if (!socfpgaclk->bypass_reg)
+ if (socfpgaclk->hw.reg)
div = ((readl(socfpgaclk->hw.reg) & 0x7ff) + 1);
}
@@ -48,20 +64,30 @@ static u8 clk_periclk_get_parent(struct clk_hw *hwclk)
{
struct socfpga_periph_clk *socfpgaclk = to_periph_clk(hwclk);
u32 clk_src, mask;
- u8 parent;
+ u8 parent = 0;
+ /* handle the bypass first */
if (socfpgaclk->bypass_reg) {
mask = (0x1 << socfpgaclk->bypass_shift);
parent = ((readl(socfpgaclk->bypass_reg) & mask) >>
socfpgaclk->bypass_shift);
- } else {
+ if (parent)
+ return parent;
+ }
+
+ if (socfpgaclk->hw.reg) {
clk_src = readl(socfpgaclk->hw.reg);
parent = (clk_src >> CLK_MGR_FREE_SHIFT) &
- CLK_MGR_FREE_MASK;
+ CLK_MGR_FREE_MASK;
}
return parent;
}
+static const struct clk_ops n5x_peri_c_clk_ops = {
+ .recalc_rate = n5x_clk_peri_c_clk_recalc_rate,
+ .get_parent = clk_periclk_get_parent,
+};
+
static const struct clk_ops peri_c_clk_ops = {
.recalc_rate = clk_peri_c_clk_recalc_rate,
.get_parent = clk_periclk_get_parent,
@@ -72,78 +98,160 @@ static const struct clk_ops peri_cnt_clk_ops = {
.get_parent = clk_periclk_get_parent,
};
-struct clk *s10_register_periph(const char *name, const char *parent_name,
- const char * const *parent_names,
- u8 num_parents, unsigned long flags,
- void __iomem *reg, unsigned long offset)
+struct clk_hw *s10_register_periph(const struct stratix10_perip_c_clock *clks,
+ void __iomem *reg)
{
- struct clk *clk;
+ struct clk_hw *hw_clk;
struct socfpga_periph_clk *periph_clk;
struct clk_init_data init;
+ const char *name = clks->name;
+ const char *parent_name = clks->parent_name;
+ int ret;
periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
if (WARN_ON(!periph_clk))
return NULL;
- periph_clk->hw.reg = reg + offset;
+ periph_clk->hw.reg = reg + clks->offset;
init.name = name;
init.ops = &peri_c_clk_ops;
- init.flags = flags;
+ init.flags = clks->flags;
- init.num_parents = num_parents;
- init.parent_names = parent_names ? parent_names : &parent_name;
+ init.num_parents = clks->num_parents;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ if (init.parent_names == NULL)
+ init.parent_data = clks->parent_data;
periph_clk->hw.hw.init = &init;
+ hw_clk = &periph_clk->hw.hw;
- clk = clk_register(NULL, &periph_clk->hw.hw);
- if (WARN_ON(IS_ERR(clk))) {
+ ret = clk_hw_register(NULL, hw_clk);
+ if (ret) {
kfree(periph_clk);
+ return ERR_PTR(ret);
+ }
+ return hw_clk;
+}
+
+struct clk_hw *n5x_register_periph(const struct n5x_perip_c_clock *clks,
+ void __iomem *regbase)
+{
+ struct clk_hw *hw_clk;
+ struct socfpga_periph_clk *periph_clk;
+ struct clk_init_data init;
+ const char *name = clks->name;
+ const char *parent_name = clks->parent_name;
+ int ret;
+
+ periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
+ if (WARN_ON(!periph_clk))
return NULL;
+
+ periph_clk->hw.reg = regbase + clks->offset;
+ periph_clk->shift = clks->shift;
+
+ init.name = name;
+ init.ops = &n5x_peri_c_clk_ops;
+ init.flags = clks->flags;
+
+ init.num_parents = clks->num_parents;
+ init.parent_names = parent_name ? &parent_name : NULL;
+
+ periph_clk->hw.hw.init = &init;
+ hw_clk = &periph_clk->hw.hw;
+
+ ret = clk_hw_register(NULL, hw_clk);
+ if (ret) {
+ kfree(periph_clk);
+ return ERR_PTR(ret);
}
- return clk;
+ return hw_clk;
}
-struct clk *s10_register_cnt_periph(const char *name, const char *parent_name,
- const char * const *parent_names,
- u8 num_parents, unsigned long flags,
- void __iomem *regbase, unsigned long offset,
- u8 fixed_divider, unsigned long bypass_reg,
- unsigned long bypass_shift)
+struct clk_hw *s10_register_cnt_periph(const struct stratix10_perip_cnt_clock *clks,
+ void __iomem *regbase)
{
- struct clk *clk;
+ struct clk_hw *hw_clk;
struct socfpga_periph_clk *periph_clk;
struct clk_init_data init;
+ const char *name = clks->name;
+ const char *parent_name = clks->parent_name;
+ int ret;
periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
if (WARN_ON(!periph_clk))
return NULL;
- if (offset)
- periph_clk->hw.reg = regbase + offset;
+ if (clks->offset)
+ periph_clk->hw.reg = regbase + clks->offset;
else
periph_clk->hw.reg = NULL;
- if (bypass_reg)
- periph_clk->bypass_reg = regbase + bypass_reg;
+ if (clks->bypass_reg)
+ periph_clk->bypass_reg = regbase + clks->bypass_reg;
else
periph_clk->bypass_reg = NULL;
- periph_clk->bypass_shift = bypass_shift;
- periph_clk->fixed_div = fixed_divider;
+ periph_clk->bypass_shift = clks->bypass_shift;
+ periph_clk->fixed_div = clks->fixed_divider;
init.name = name;
init.ops = &peri_cnt_clk_ops;
- init.flags = flags;
+ init.flags = clks->flags;
- init.num_parents = num_parents;
- init.parent_names = parent_names ? parent_names : &parent_name;
+ init.num_parents = clks->num_parents;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ if (init.parent_names == NULL)
+ init.parent_data = clks->parent_data;
periph_clk->hw.hw.init = &init;
+ hw_clk = &periph_clk->hw.hw;
- clk = clk_register(NULL, &periph_clk->hw.hw);
- if (WARN_ON(IS_ERR(clk))) {
+ ret = clk_hw_register(NULL, hw_clk);
+ if (ret) {
kfree(periph_clk);
+ return ERR_PTR(ret);
+ }
+ return hw_clk;
+}
+
+struct clk_hw *agilex5_register_cnt_periph(const struct agilex5_perip_cnt_clock *clks,
+ void __iomem *regbase)
+{
+ struct clk_hw *hw_clk;
+ struct socfpga_periph_clk *periph_clk;
+ struct clk_init_data init;
+ const char *name = clks->name;
+ int ret;
+
+ periph_clk = kzalloc(sizeof(*periph_clk), GFP_KERNEL);
+ if (WARN_ON(!periph_clk))
return NULL;
+
+ if (clks->offset)
+ periph_clk->hw.reg = regbase + clks->offset;
+ else
+ periph_clk->hw.reg = NULL;
+
+ if (clks->bypass_reg)
+ periph_clk->bypass_reg = regbase + clks->bypass_reg;
+ else
+ periph_clk->bypass_reg = NULL;
+ periph_clk->bypass_shift = clks->bypass_shift;
+ periph_clk->fixed_div = clks->fixed_divider;
+
+ init.name = name;
+ init.ops = &peri_cnt_clk_ops;
+ init.flags = clks->flags;
+ init.num_parents = clks->num_parents;
+ init.parent_names = clks->parent_names;
+ periph_clk->hw.hw.init = &init;
+ hw_clk = &periph_clk->hw.hw;
+
+ ret = clk_hw_register(NULL, hw_clk);
+ if (ret) {
+ kfree(periph_clk);
+ return ERR_PTR(ret);
}
- return clk;
+ return hw_clk;
}
generated by cgit (git 2.34.1) at 2025-12-25 15:18:31 +0000