leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pinctrl/nomadik: break out single GPIO debug function

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

97
drivers/pinctrl/pinctrl-nomadik.c
View File

@ -943,14 +943,16 @@ static int nmk_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
#include <linux/seq_file.h> #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; const char *label = gpiochip_is_requested(chip, offset);
unsigned i;
unsigned gpio = chip->base;
int is_out;
struct nmk_gpio_chip *nmk_chip = struct nmk_gpio_chip *nmk_chip =
container_of(chip, struct nmk_gpio_chip, chip); container_of(chip, struct nmk_gpio_chip, chip);
int mode;
bool is_out;
bool pull;
u32 bit = 1 << offset;
const char *modes[] = { const char *modes[] = {
[NMK_GPIO_ALT_GPIO] = "gpio", [NMK_GPIO_ALT_GPIO] = "gpio",
[NMK_GPIO_ALT_A] = "altA", [NMK_GPIO_ALT_A] = "altA",
@ -959,56 +961,63 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
}; };
clk_enable(nmk_chip->clk); clk_enable(nmk_chip->clk);
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);
for (i = 0; i < chip->ngpio; i++, gpio++) { seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s",
const char *label = gpiochip_is_requested(chip, i); gpio, label ?: "(none)",
bool pull; is_out ? "out" : "in ",
u32 bit = 1 << i; chip->get
? (chip->get(chip, offset) ? "hi" : "lo")
: "? ",
(mode < 0) ? "unknown" : modes[mode],
pull ? "pull" : "none");
is_out = readl(nmk_chip->addr + NMK_GPIO_DIR) & bit; if (label && !is_out) {
pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit); int irq = gpio_to_irq(gpio);
mode = nmk_gpio_get_mode(gpio); struct irq_desc *desc = irq_to_desc(irq);
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")
: "? ",
(mode < 0) ? "unknown" : modes[mode],
pull ? "pull" : "none");
if (label && !is_out) { /* This races with request_irq(), set_irq_type(),
int irq = gpio_to_irq(gpio); * and set_irq_wake() ... but those are "rare".
struct irq_desc *desc = irq_to_desc(irq); */
if (irq >= 0 && desc->action) {
char *trigger;
u32 bitmask = nmk_gpio_get_bitmask(gpio);
/* This races with request_irq(), set_irq_type(), if (nmk_chip->edge_rising & bitmask)
* and set_irq_wake() ... but those are "rare". trigger = "edge-rising";
*/ else if (nmk_chip->edge_falling & bitmask)
if (irq >= 0 && desc->action) { trigger = "edge-falling";
char *trigger; else
u32 bitmask = nmk_gpio_get_bitmask(gpio); trigger = "edge-undefined";
if (nmk_chip->edge_rising & bitmask) seq_printf(s, " irq-%d %s%s",
trigger = "edge-rising"; irq, trigger,
else if (nmk_chip->edge_falling & bitmask) irqd_is_wakeup_set(&desc->irq_data)
trigger = "edge-falling"; ? " wakeup" : "");
else
trigger = "edge-undefined";
seq_printf(s, " irq-%d %s%s",
irq, trigger,
irqd_is_wakeup_set(&desc->irq_data)
? " wakeup" : "");
}
} }
seq_printf(s, "\n");
} }
clk_disable(nmk_chip->clk); 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 #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 #define nmk_gpio_dbg_show NULL
#endif #endif