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Diffstat (limited to 'drivers/sh')
-rw-r--r--drivers/sh/pfc.c45
1 files changed, 18 insertions, 27 deletions
diff --git a/drivers/sh/pfc.c b/drivers/sh/pfc.c
index cfca0aaf9820..41e7c8f63b10 100644
--- a/drivers/sh/pfc.c
+++ b/drivers/sh/pfc.c
@@ -287,7 +287,8 @@ static int get_data_reg(struct pinmux_info *gpioc, unsigned gpio,
}
static int get_config_reg(struct pinmux_info *gpioc, pinmux_enum_t enum_id,
- struct pinmux_cfg_reg **crp, int *indexp,
+ struct pinmux_cfg_reg **crp,
+ int *fieldp, int *valuep,
unsigned long **cntp)
{
struct pinmux_cfg_reg *config_reg;
@@ -306,7 +307,8 @@ static int get_config_reg(struct pinmux_info *gpioc, pinmux_enum_t enum_id,
for (n = 0; n < (r_width / f_width) * (1 << f_width); n++) {
if (config_reg->enum_ids[n] == enum_id) {
*crp = config_reg;
- *indexp = n;
+ *fieldp = n / (1 << f_width);
+ *valuep = n % (1 << f_width);
*cntp = &config_reg->cnt[n / (1 << f_width)];
return 0;
}
@@ -349,36 +351,22 @@ static int get_gpio_enum_id(struct pinmux_info *gpioc, unsigned gpio,
static void write_config_reg(struct pinmux_info *gpioc,
struct pinmux_cfg_reg *crp,
- int index)
+ int field, int value)
{
- unsigned long ncomb, pos, value;
- void __iomem *mapped_reg;
-
- ncomb = 1 << crp->field_width;
- pos = index / ncomb;
- value = index % ncomb;
-
- mapped_reg = pfc_phys_to_virt(gpioc, crp->reg);
+ void __iomem *mapped_reg = pfc_phys_to_virt(gpioc, crp->reg);
gpio_write_reg(mapped_reg, crp->reg_width, crp->field_width,
- pos, value, crp->reg);
+ field, value, crp->reg);
}
static int check_config_reg(struct pinmux_info *gpioc,
struct pinmux_cfg_reg *crp,
- int index)
+ int field, int value)
{
- unsigned long ncomb, pos, value;
- void __iomem *mapped_reg;
-
- ncomb = 1 << crp->field_width;
- pos = index / ncomb;
- value = index % ncomb;
-
- mapped_reg = pfc_phys_to_virt(gpioc, crp->reg);
+ void __iomem *mapped_reg = pfc_phys_to_virt(gpioc, crp->reg);
if (gpio_read_reg(mapped_reg, crp->reg_width,
- crp->field_width, pos, crp->reg) == value)
+ crp->field_width, field, crp->reg) == value)
return 0;
return -1;
@@ -392,7 +380,7 @@ static int pinmux_config_gpio(struct pinmux_info *gpioc, unsigned gpio,
struct pinmux_cfg_reg *cr = NULL;
pinmux_enum_t enum_id;
struct pinmux_range *range;
- int in_range, pos, index;
+ int in_range, pos, field, value;
unsigned long *cntp;
switch (pinmux_type) {
@@ -423,7 +411,8 @@ static int pinmux_config_gpio(struct pinmux_info *gpioc, unsigned gpio,
pos = 0;
enum_id = 0;
- index = 0;
+ field = 0;
+ value = 0;
while (1) {
pos = get_gpio_enum_id(gpioc, gpio, pos, &enum_id);
if (pos <= 0)
@@ -470,17 +459,19 @@ static int pinmux_config_gpio(struct pinmux_info *gpioc, unsigned gpio,
if (!in_range)
continue;
- if (get_config_reg(gpioc, enum_id, &cr, &index, &cntp) != 0)
+ if (get_config_reg(gpioc, enum_id, &cr,
+ &field, &value, &cntp) != 0)
goto out_err;
switch (cfg_mode) {
case GPIO_CFG_DRYRUN:
- if (!*cntp || !check_config_reg(gpioc, cr, index))
+ if (!*cntp || !check_config_reg(gpioc, cr,
+ field, value))
continue;
break;
case GPIO_CFG_REQ:
- write_config_reg(gpioc, cr, index);
+ write_config_reg(gpioc, cr, field, value);
*cntp = *cntp + 1;
break;