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authorChanho Park <chanho61.park@samsung.com>2012-01-03 16:47:50 +0900
committerLinus Walleij <linus.walleij@linaro.org>2012-01-03 09:10:09 +0100
commit706e8520e8450a631ca6f798f8c811faf56f0a59 (patch)
tree68b0f77fc1f3b92be3e905e36f14e184403d0b67 /drivers/pinctrl
parente6337c3c96a7ee5cfd5e7afed825f894d4576f58 (diff)
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pinctrl: correct a offset while enumerating pins
This patch modifies a offset while enumerating pins to support a partial pin space. If we use a pin number for enumerating pins, the pin space always starts with zero base. Indeed, we always check the pin is in the pin space. An extreme example, there is only two pins. One is 0. Another is 1000. We always enumerate whole offsets until 1000. For solving this problem, we use the offset of the pin array instead of the zero-based pin number. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [Restored sparse pin space comment] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/core.c14
-rw-r--r--drivers/pinctrl/pinconf.c9
-rw-r--r--drivers/pinctrl/pinmux.c9
3 files changed, 18 insertions, 14 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 9e32ea3..79c56d90 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -102,12 +102,13 @@ struct pin_desc *pin_desc_get(struct pinctrl_dev *pctldev, unsigned int pin)
*/
int pin_get_from_name(struct pinctrl_dev *pctldev, const char *name)
{
- unsigned pin;
+ unsigned i, pin;
- /* The highest pin number need to be included in the loop, thus <= */
- for (pin = 0; pin <= pctldev->desc->maxpin; pin++) {
+ /* The pin number can be retrived from the pin controller descriptor */
+ for (i = 0; i < pctldev->desc->npins; i++) {
struct pin_desc *desc;
+ pin = pctldev->desc->pins[i].number;
desc = pin_desc_get(pctldev, pin);
/* Pin space may be sparse */
if (desc == NULL)
@@ -350,15 +351,16 @@ static int pinctrl_pins_show(struct seq_file *s, void *what)
{
struct pinctrl_dev *pctldev = s->private;
const struct pinctrl_ops *ops = pctldev->desc->pctlops;
- unsigned pin;
+ unsigned i, pin;
seq_printf(s, "registered pins: %d\n", pctldev->desc->npins);
seq_printf(s, "max pin number: %d\n", pctldev->desc->maxpin);
- /* The highest pin number need to be included in the loop, thus <= */
- for (pin = 0; pin <= pctldev->desc->maxpin; pin++) {
+ /* The pin number can be retrived from the pin controller descriptor */
+ for (i = 0; i < pctldev->desc->npins; i++) {
struct pin_desc *desc;
+ pin = pctldev->desc->pins[i].number;
desc = pin_desc_get(pctldev, pin);
/* Pin space may be sparse */
if (desc == NULL)
diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 57dbb4b..1259872 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -230,17 +230,18 @@ static void pinconf_dump_pin(struct pinctrl_dev *pctldev,
static int pinconf_pins_show(struct seq_file *s, void *what)
{
struct pinctrl_dev *pctldev = s->private;
- unsigned pin;
+ unsigned i, pin;
seq_puts(s, "Pin config settings per pin\n");
seq_puts(s, "Format: pin (name): pinmux setting array\n");
- /* The highest pin number need to be included in the loop, thus <= */
- for (pin = 0; pin <= pctldev->desc->maxpin; pin++) {
+ /* The pin number can be retrived from the pin controller descriptor */
+ for (i = 0; pin < pctldev->desc->npins; i++) {
struct pin_desc *desc;
+ pin = pctldev->desc->pins[i].number;
desc = pin_desc_get(pctldev, pin);
- /* Pin space may be sparse */
+ /* Skip if we cannot search the pin */
if (desc == NULL)
continue;
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 0916222..a76a348 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -1063,18 +1063,19 @@ static int pinmux_functions_show(struct seq_file *s, void *what)
static int pinmux_pins_show(struct seq_file *s, void *what)
{
struct pinctrl_dev *pctldev = s->private;
- unsigned pin;
+ unsigned i, pin;
seq_puts(s, "Pinmux settings per pin\n");
seq_puts(s, "Format: pin (name): pinmuxfunction\n");
- /* The highest pin number need to be included in the loop, thus <= */
- for (pin = 0; pin <= pctldev->desc->maxpin; pin++) {
+ /* The pin number can be retrived from the pin controller descriptor */
+ for (i = 0; i < pctldev->desc->npins; i++) {
struct pin_desc *desc;
+ pin = pctldev->desc->pins[i].number;
desc = pin_desc_get(pctldev, pin);
- /* Pin space may be sparse */
+ /* Skip if we cannot search the pin */
if (desc == NULL)
continue;
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