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pinctrl/nomadik: break out single GPIO debug function

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Break out the code displaying the status of a single pin so we
can use the same code in the pinctrl debug function.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2012-05-02 21:06:13 +02:00
parent e98ea774c8
commit 6f4350a6da
1 changed files with 53 additions and 44 deletions
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43
drivers/pinctrl/pinctrl-nomadik.c
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@ -943,14 +943,16 @@ static int nmk_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
#include <linux/seq_file.h>
static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
static void nmk_gpio_dbg_show_one(struct seq_file *s, struct gpio_chip *chip,
unsigned offset, unsigned gpio)
{
int mode;
unsigned i;
unsigned gpio = chip->base;
int is_out;
const char *label = gpiochip_is_requested(chip, offset);
struct nmk_gpio_chip *nmk_chip =
container_of(chip, struct nmk_gpio_chip, chip);
int mode;
bool is_out;
bool pull;
u32 bit = 1 << offset;
const char *modes[] = {
[NMK_GPIO_ALT_GPIO] = "gpio",
[NMK_GPIO_ALT_A] = "altA",
@ -959,20 +961,15 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
};
clk_enable(nmk_chip->clk);
for (i = 0; i < chip->ngpio; i++, gpio++) {
const char *label = gpiochip_is_requested(chip, i);
bool pull;
u32 bit = 1 << i;
is_out = readl(nmk_chip->addr + NMK_GPIO_DIR) & bit;
is_out = !!(readl(nmk_chip->addr + NMK_GPIO_DIR) & bit);
pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit);
mode = nmk_gpio_get_mode(gpio);
seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s",
gpio, label ?: "(none)",
is_out ? "out" : "in ",
chip->get
? (chip->get(chip, i) ? "hi" : "lo")
? (chip->get(chip, offset) ? "hi" : "lo")
: "? ",
(mode < 0) ? "unknown" : modes[mode],
pull ? "pull" : "none");
@ -1001,14 +998,26 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
? " wakeup" : "");
}
}
seq_printf(s, "\n");
}
clk_disable(nmk_chip->clk);
}
static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
{
unsigned i;
unsigned gpio = chip->base;
for (i = 0; i < chip->ngpio; i++, gpio++) {
nmk_gpio_dbg_show_one(s, chip, i, gpio);
seq_printf(s, "\n");
}
}
#else
static inline void nmk_gpio_dbg_show_one(struct seq_file *s,
struct gpio_chip *chip,
unsigned offset, unsigned gpio)
{
}
#define nmk_gpio_dbg_show NULL
#endif