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pinctrl/nomadik: debugfs display of other alternate-C functions 

In pinctrl debug pins file, enable display of AltCx functions.

Signed-off-by: Jean-Nicolas Graux <jean-nicolas.graux@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Jean-Nicolas Graux 2012-10-15 09:47:05 +02:00 committed by Linus Walleij
parent d3cd8d0caa
commit 2249b19f37
1 changed files with 41 additions and 4 deletions
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45
drivers/pinctrl/pinctrl-nomadik.c
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@ -671,6 +671,35 @@ int nmk_gpio_set_mode(int gpio, int gpio_mode)
}
EXPORT_SYMBOL(nmk_gpio_set_mode);
static int nmk_prcm_gpiocr_get_mode(struct pinctrl_dev *pctldev, int gpio)
{
int i;
u16 reg;
u8 bit;
struct nmk_pinctrl *npct = pinctrl_dev_get_drvdata(pctldev);
const struct prcm_gpiocr_altcx_pin_desc *pin_desc;
const u16 *gpiocr_regs;
for (i = 0; i < npct->soc->npins_altcx; i++) {
if (npct->soc->altcx_pins[i].pin == gpio)
break;
}
if (i == npct->soc->npins_altcx)
return NMK_GPIO_ALT_C;
pin_desc = npct->soc->altcx_pins + i;
gpiocr_regs = npct->soc->prcm_gpiocr_registers;
for (i = 0; i < PRCM_IDX_GPIOCR_ALTC_MAX; i++) {
if (pin_desc->altcx[i].used == true) {
reg = gpiocr_regs[pin_desc->altcx[i].reg_index];
bit = pin_desc->altcx[i].control_bit;
if (prcmu_read(reg) & BIT(bit))
return NMK_GPIO_ALT_C+i+1;
}
}
return NMK_GPIO_ALT_C;
}
int nmk_gpio_get_mode(int gpio)
{
struct nmk_gpio_chip *nmk_chip;
@ -1059,8 +1088,9 @@ static int nmk_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
#include <linux/seq_file.h>
static void nmk_gpio_dbg_show_one(struct seq_file *s, struct gpio_chip *chip,
unsigned offset, unsigned gpio)
static void nmk_gpio_dbg_show_one(struct seq_file *s,
struct pinctrl_dev *pctldev, struct gpio_chip *chip,
unsigned offset, unsigned gpio)
{
const char *label = gpiochip_is_requested(chip, offset);
struct nmk_gpio_chip *nmk_chip =
@ -1074,12 +1104,18 @@ static void nmk_gpio_dbg_show_one(struct seq_file *s, struct gpio_chip *chip,
[NMK_GPIO_ALT_A] = "altA",
[NMK_GPIO_ALT_B] = "altB",
[NMK_GPIO_ALT_C] = "altC",
[NMK_GPIO_ALT_C+1] = "altC1",
[NMK_GPIO_ALT_C+2] = "altC2",
[NMK_GPIO_ALT_C+3] = "altC3",
[NMK_GPIO_ALT_C+4] = "altC4",
};
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);
if ((mode == NMK_GPIO_ALT_C) && pctldev)
mode = nmk_prcm_gpiocr_get_mode(pctldev, gpio);
seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s",
gpio, label ?: "(none)",
@ -1123,13 +1159,14 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
unsigned gpio = chip->base;
for (i = 0; i < chip->ngpio; i++, gpio++) {
nmk_gpio_dbg_show_one(s, chip, i, gpio);
nmk_gpio_dbg_show_one(s, NULL, chip, i, gpio);
seq_printf(s, "\n");
}
}
#else
static inline void nmk_gpio_dbg_show_one(struct seq_file *s,
struct pinctrl_dev *pctldev,
struct gpio_chip *chip,
unsigned offset, unsigned gpio)
{
@ -1460,7 +1497,7 @@ static void nmk_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
return;
}
chip = range->gc;
nmk_gpio_dbg_show_one(s, chip, offset - chip->base, offset);
nmk_gpio_dbg_show_one(s, pctldev, chip, offset - chip->base, offset);
}
static struct pinctrl_ops nmk_pinctrl_ops = {