[PATCH 021/142] sh-pfc: Add function to retrieve a pin instance from its pin number
Simon Horman
horms+renesas at verge.net.au
Mon Mar 18 07:05:17 EDT 2013
From: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
This prepares support for sparse pin numbering. The function currently
just performs and indexed lookup in the pins array.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij at linaro.org>
---
drivers/pinctrl/sh-pfc/core.c | 7 ++++++-
drivers/pinctrl/sh-pfc/core.h | 1 +
drivers/pinctrl/sh-pfc/gpio.c | 3 ++-
drivers/pinctrl/sh-pfc/pinctrl.c | 23 +++++++++++++----------
4 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c
index 9b5c031..667db99 100644
--- a/drivers/pinctrl/sh-pfc/core.c
+++ b/drivers/pinctrl/sh-pfc/core.c
@@ -78,6 +78,11 @@ static void __iomem *sh_pfc_phys_to_virt(struct sh_pfc *pfc,
return (void __iomem *)address;
}
+struct sh_pfc_pin *sh_pfc_get_pin(struct sh_pfc *pfc, unsigned int pin)
+{
+ return &pfc->info->pins[pin];
+}
+
static int sh_pfc_enum_in_range(pinmux_enum_t enum_id, struct pinmux_range *r)
{
if (enum_id < r->begin)
@@ -278,7 +283,7 @@ static void sh_pfc_setup_data_regs(struct sh_pfc *pfc)
void sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp)
{
- struct sh_pfc_pin *gpiop = &pfc->info->pins[gpio];
+ struct sh_pfc_pin *gpiop = sh_pfc_get_pin(pfc, gpio);
int k, n;
k = (gpiop->flags & PINMUX_FLAG_DREG) >> PINMUX_FLAG_DREG_SHIFT;
diff --git a/drivers/pinctrl/sh-pfc/core.h b/drivers/pinctrl/sh-pfc/core.h
index a3111b7..6ea3d4f 100644
--- a/drivers/pinctrl/sh-pfc/core.h
+++ b/drivers/pinctrl/sh-pfc/core.h
@@ -49,6 +49,7 @@ void sh_pfc_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos,
unsigned long value);
void sh_pfc_get_data_reg(struct sh_pfc *pfc, unsigned gpio,
struct pinmux_data_reg **drp, int *bitp);
+struct sh_pfc_pin *sh_pfc_get_pin(struct sh_pfc *pfc, unsigned int pin);
int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type,
int cfg_mode);
diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
index db9af4e..45090d8 100644
--- a/drivers/pinctrl/sh-pfc/gpio.c
+++ b/drivers/pinctrl/sh-pfc/gpio.c
@@ -43,8 +43,9 @@ static struct sh_pfc *gpio_to_pfc(struct gpio_chip *gc)
static int gpio_pin_request(struct gpio_chip *gc, unsigned offset)
{
struct sh_pfc *pfc = gpio_to_pfc(gc);
+ struct sh_pfc_pin *pin = sh_pfc_get_pin(pfc, offset);
- if (pfc->info->pins[offset].enum_id == 0)
+ if (pin->enum_id == 0)
return -EINVAL;
return pinctrl_request_gpio(offset);
diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c
index a83f400..78bd277 100644
--- a/drivers/pinctrl/sh-pfc/pinctrl.c
+++ b/drivers/pinctrl/sh-pfc/pinctrl.c
@@ -119,14 +119,15 @@ static void sh_pfc_noop_disable(struct pinctrl_dev *pctldev, unsigned func,
static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,
int new_type)
{
- unsigned int mark = pfc->info->pins[offset].enum_id;
+ struct sh_pfc_pin *pin = sh_pfc_get_pin(pfc, offset);
+ unsigned int mark = pin->enum_id;
unsigned long flags;
int pinmux_type;
int ret = -EINVAL;
spin_lock_irqsave(&pfc->lock, flags);
- pinmux_type = pfc->info->pins[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pin->flags & PINMUX_FLAG_TYPE;
/*
* See if the present config needs to first be de-configured.
@@ -156,8 +157,8 @@ static int sh_pfc_reconfig_pin(struct sh_pfc *pfc, unsigned offset,
if (sh_pfc_config_mux(pfc, mark, new_type, GPIO_CFG_REQ) != 0)
goto err;
- pfc->info->pins[offset].flags &= ~PINMUX_FLAG_TYPE;
- pfc->info->pins[offset].flags |= new_type;
+ pin->flags &= ~PINMUX_FLAG_TYPE;
+ pin->flags |= new_type;
ret = 0;
@@ -173,12 +174,13 @@ static int sh_pfc_gpio_request_enable(struct pinctrl_dev *pctldev,
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
+ struct sh_pfc_pin *pin = sh_pfc_get_pin(pfc, offset);
unsigned long flags;
int ret, pinmux_type;
spin_lock_irqsave(&pfc->lock, flags);
- pinmux_type = pfc->info->pins[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pin->flags & PINMUX_FLAG_TYPE;
switch (pinmux_type) {
case PINMUX_TYPE_GPIO:
@@ -206,15 +208,15 @@ static void sh_pfc_gpio_disable_free(struct pinctrl_dev *pctldev,
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
+ struct sh_pfc_pin *pin = sh_pfc_get_pin(pfc, offset);
unsigned long flags;
int pinmux_type;
spin_lock_irqsave(&pfc->lock, flags);
- pinmux_type = pfc->info->pins[offset].flags & PINMUX_FLAG_TYPE;
+ pinmux_type = pin->flags & PINMUX_FLAG_TYPE;
- sh_pfc_config_mux(pfc, pfc->info->pins[offset].enum_id, pinmux_type,
- GPIO_CFG_FREE);
+ sh_pfc_config_mux(pfc, pin->enum_id, pinmux_type, GPIO_CFG_FREE);
spin_unlock_irqrestore(&pfc->lock, flags);
}
@@ -240,13 +242,14 @@ static const struct pinmux_ops sh_pfc_pinmux_ops = {
.gpio_set_direction = sh_pfc_gpio_set_direction,
};
-static int sh_pfc_pinconf_get(struct pinctrl_dev *pctldev, unsigned pin,
+static int sh_pfc_pinconf_get(struct pinctrl_dev *pctldev, unsigned _pin,
unsigned long *config)
{
struct sh_pfc_pinctrl *pmx = pinctrl_dev_get_drvdata(pctldev);
struct sh_pfc *pfc = pmx->pfc;
+ struct sh_pfc_pin *pin = sh_pfc_get_pin(pfc, _pin);
- *config = pfc->info->pins[pin].flags & PINMUX_FLAG_TYPE;
+ *config = pin->flags & PINMUX_FLAG_TYPE;
return 0;
}
--
1.7.10.4
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