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path: root/drivers/clk/bcm/clk-bcm2835.c
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Diffstat (limited to 'drivers/clk/bcm/clk-bcm2835.c')
-rw-r--r--drivers/clk/bcm/clk-bcm2835.c80
1 files changed, 43 insertions, 37 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index ded13ccf768e..6bb7efa12037 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -396,8 +396,8 @@ out:
}
static void bcm2835_debugfs_regset(struct bcm2835_cprman *cprman, u32 base,
- struct debugfs_reg32 *regs, size_t nregs,
- struct dentry *dentry)
+ const struct debugfs_reg32 *regs,
+ size_t nregs, struct dentry *dentry)
{
struct debugfs_regset32 *regset;
@@ -1240,7 +1240,7 @@ static u8 bcm2835_clock_get_parent(struct clk_hw *hw)
return (src & CM_SRC_MASK) >> CM_SRC_SHIFT;
}
-static struct debugfs_reg32 bcm2835_debugfs_clock_reg32[] = {
+static const struct debugfs_reg32 bcm2835_debugfs_clock_reg32[] = {
{
.name = "ctl",
.offset = 0,
@@ -1296,8 +1296,9 @@ static const struct clk_ops bcm2835_vpu_clock_clk_ops = {
};
static struct clk_hw *bcm2835_register_pll(struct bcm2835_cprman *cprman,
- const struct bcm2835_pll_data *data)
+ const void *data)
{
+ const struct bcm2835_pll_data *pll_data = data;
struct bcm2835_pll *pll;
struct clk_init_data init;
int ret;
@@ -1307,7 +1308,7 @@ static struct clk_hw *bcm2835_register_pll(struct bcm2835_cprman *cprman,
/* All of the PLLs derive from the external oscillator. */
init.parent_names = &cprman->real_parent_names[0];
init.num_parents = 1;
- init.name = data->name;
+ init.name = pll_data->name;
init.ops = &bcm2835_pll_clk_ops;
init.flags = CLK_IGNORE_UNUSED;
@@ -1316,7 +1317,7 @@ static struct clk_hw *bcm2835_register_pll(struct bcm2835_cprman *cprman,
return NULL;
pll->cprman = cprman;
- pll->data = data;
+ pll->data = pll_data;
pll->hw.init = &init;
ret = devm_clk_hw_register(cprman->dev, &pll->hw);
@@ -1327,35 +1328,36 @@ static struct clk_hw *bcm2835_register_pll(struct bcm2835_cprman *cprman,
static struct clk_hw *
bcm2835_register_pll_divider(struct bcm2835_cprman *cprman,
- const struct bcm2835_pll_divider_data *data)
+ const void *data)
{
+ const struct bcm2835_pll_divider_data *divider_data = data;
struct bcm2835_pll_divider *divider;
struct clk_init_data init;
const char *divider_name;
int ret;
- if (data->fixed_divider != 1) {
+ if (divider_data->fixed_divider != 1) {
divider_name = devm_kasprintf(cprman->dev, GFP_KERNEL,
- "%s_prediv", data->name);
+ "%s_prediv", divider_data->name);
if (!divider_name)
return NULL;
} else {
- divider_name = data->name;
+ divider_name = divider_data->name;
}
memset(&init, 0, sizeof(init));
- init.parent_names = &data->source_pll;
+ init.parent_names = &divider_data->source_pll;
init.num_parents = 1;
init.name = divider_name;
init.ops = &bcm2835_pll_divider_clk_ops;
- init.flags = data->flags | CLK_IGNORE_UNUSED;
+ init.flags = divider_data->flags | CLK_IGNORE_UNUSED;
divider = devm_kzalloc(cprman->dev, sizeof(*divider), GFP_KERNEL);
if (!divider)
return NULL;
- divider->div.reg = cprman->regs + data->a2w_reg;
+ divider->div.reg = cprman->regs + divider_data->a2w_reg;
divider->div.shift = A2W_PLL_DIV_SHIFT;
divider->div.width = A2W_PLL_DIV_BITS;
divider->div.flags = CLK_DIVIDER_MAX_AT_ZERO;
@@ -1364,7 +1366,7 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman,
divider->div.table = NULL;
divider->cprman = cprman;
- divider->data = data;
+ divider->data = divider_data;
ret = devm_clk_hw_register(cprman->dev, &divider->div.hw);
if (ret)
@@ -1374,20 +1376,22 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman,
* PLLH's channels have a fixed divide by 10 afterwards, which
* is what our consumers are actually using.
*/
- if (data->fixed_divider != 1) {
- return clk_hw_register_fixed_factor(cprman->dev, data->name,
+ if (divider_data->fixed_divider != 1) {
+ return clk_hw_register_fixed_factor(cprman->dev,
+ divider_data->name,
divider_name,
CLK_SET_RATE_PARENT,
1,
- data->fixed_divider);
+ divider_data->fixed_divider);
}
return &divider->div.hw;
}
static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
- const struct bcm2835_clock_data *data)
+ const void *data)
{
+ const struct bcm2835_clock_data *clock_data = data;
struct bcm2835_clock *clock;
struct clk_init_data init;
const char *parents[1 << CM_SRC_BITS];
@@ -1398,8 +1402,8 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
* Replace our strings referencing parent clocks with the
* actual clock-output-name of the parent.
*/
- for (i = 0; i < data->num_mux_parents; i++) {
- parents[i] = data->parents[i];
+ for (i = 0; i < clock_data->num_mux_parents; i++) {
+ parents[i] = clock_data->parents[i];
ret = match_string(cprman_parent_names,
ARRAY_SIZE(cprman_parent_names),
@@ -1410,18 +1414,18 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
memset(&init, 0, sizeof(init));
init.parent_names = parents;
- init.num_parents = data->num_mux_parents;
- init.name = data->name;
- init.flags = data->flags | CLK_IGNORE_UNUSED;
+ init.num_parents = clock_data->num_mux_parents;
+ init.name = clock_data->name;
+ init.flags = clock_data->flags | CLK_IGNORE_UNUSED;
/*
* Pass the CLK_SET_RATE_PARENT flag if we are allowed to propagate
* rate changes on at least of the parents.
*/
- if (data->set_rate_parent)
+ if (clock_data->set_rate_parent)
init.flags |= CLK_SET_RATE_PARENT;
- if (data->is_vpu_clock) {
+ if (clock_data->is_vpu_clock) {
init.ops = &bcm2835_vpu_clock_clk_ops;
} else {
init.ops = &bcm2835_clock_clk_ops;
@@ -1430,7 +1434,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
/* If the clock wasn't actually enabled at boot, it's not
* critical.
*/
- if (!(cprman_read(cprman, data->ctl_reg) & CM_ENABLE))
+ if (!(cprman_read(cprman, clock_data->ctl_reg) & CM_ENABLE))
init.flags &= ~CLK_IS_CRITICAL;
}
@@ -1439,7 +1443,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
return NULL;
clock->cprman = cprman;
- clock->data = data;
+ clock->data = clock_data;
clock->hw.init = &init;
ret = devm_clk_hw_register(cprman->dev, &clock->hw);
@@ -1448,25 +1452,27 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman,
return &clock->hw;
}
-static struct clk *bcm2835_register_gate(struct bcm2835_cprman *cprman,
- const struct bcm2835_gate_data *data)
+static struct clk_hw *bcm2835_register_gate(struct bcm2835_cprman *cprman,
+ const void *data)
{
- return clk_register_gate(cprman->dev, data->name, data->parent,
- CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE,
- cprman->regs + data->ctl_reg,
- CM_GATE_BIT, 0, &cprman->regs_lock);
+ const struct bcm2835_gate_data *gate_data = data;
+
+ return clk_hw_register_gate(cprman->dev, gate_data->name,
+ gate_data->parent,
+ CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE,
+ cprman->regs + gate_data->ctl_reg,
+ CM_GATE_BIT, 0, &cprman->regs_lock);
}
-typedef struct clk_hw *(*bcm2835_clk_register)(struct bcm2835_cprman *cprman,
- const void *data);
struct bcm2835_clk_desc {
- bcm2835_clk_register clk_register;
+ struct clk_hw *(*clk_register)(struct bcm2835_cprman *cprman,
+ const void *data);
unsigned int supported;
const void *data;
};
/* assignment helper macros for different clock types */
-#define _REGISTER(f, s, ...) { .clk_register = (bcm2835_clk_register)f, \
+#define _REGISTER(f, s, ...) { .clk_register = f, \
.supported = s, \
.data = __VA_ARGS__ }
#define REGISTER_PLL(s, ...) _REGISTER(&bcm2835_register_pll, \
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 06:53:32 +0000