diff options
Diffstat (limited to 'drivers/pinctrl/bcm/pinctrl-bcm2835.c')
| -rw-r--r-- | drivers/pinctrl/bcm/pinctrl-bcm2835.c | 111 |
1 files changed, 86 insertions, 25 deletions
diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c index 0de1a3a96984..06bd2b70af3c 100644 --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c @@ -37,12 +37,10 @@ #define MODULE_NAME "pinctrl-bcm2835" #define BCM2835_NUM_GPIOS 54 +#define BCM2711_NUM_GPIOS 58 #define BCM2835_NUM_BANKS 2 #define BCM2835_NUM_IRQS 3 -#define BCM2835_PIN_BITMAP_SZ \ - DIV_ROUND_UP(BCM2835_NUM_GPIOS, sizeof(unsigned long) * 8) - /* GPIO register offsets */ #define GPFSEL0 0x0 /* Function Select */ #define GPSET0 0x1c /* Pin Output Set */ @@ -81,10 +79,11 @@ struct bcm2835_pinctrl { /* note: locking assumes each bank will have its own unsigned long */ unsigned long enabled_irq_map[BCM2835_NUM_BANKS]; - unsigned int irq_type[BCM2835_NUM_GPIOS]; + unsigned int irq_type[BCM2711_NUM_GPIOS]; struct pinctrl_dev *pctl_dev; struct gpio_chip gpio_chip; + struct pinctrl_desc pctl_desc; struct pinctrl_gpio_range gpio_range; raw_spinlock_t irq_lock[BCM2835_NUM_BANKS]; @@ -147,6 +146,10 @@ static struct pinctrl_pin_desc bcm2835_gpio_pins[] = { BCM2835_GPIO_PIN(51), BCM2835_GPIO_PIN(52), BCM2835_GPIO_PIN(53), + BCM2835_GPIO_PIN(54), + BCM2835_GPIO_PIN(55), + BCM2835_GPIO_PIN(56), + BCM2835_GPIO_PIN(57), }; /* one pin per group */ @@ -205,6 +208,10 @@ static const char * const bcm2835_gpio_groups[] = { "gpio51", "gpio52", "gpio53", + "gpio54", + "gpio55", + "gpio56", + "gpio57", }; enum bcm2835_fsel { @@ -322,7 +329,10 @@ static int bcm2835_gpio_get_direction(struct gpio_chip *chip, unsigned int offse if (fsel > BCM2835_FSEL_GPIO_OUT) return -EINVAL; - return (fsel == BCM2835_FSEL_GPIO_IN); + if (fsel == BCM2835_FSEL_GPIO_IN) + return GPIO_LINE_DIRECTION_IN; + + return GPIO_LINE_DIRECTION_OUT; } static void bcm2835_gpio_set(struct gpio_chip *chip, unsigned offset, int value) @@ -355,6 +365,22 @@ static const struct gpio_chip bcm2835_gpio_chip = { .can_sleep = false, }; +static const struct gpio_chip bcm2711_gpio_chip = { + .label = "pinctrl-bcm2711", + .owner = THIS_MODULE, + .request = gpiochip_generic_request, + .free = gpiochip_generic_free, + .direction_input = bcm2835_gpio_direction_input, + .direction_output = bcm2835_gpio_direction_output, + .get_direction = bcm2835_gpio_get_direction, + .get = bcm2835_gpio_get, + .set = bcm2835_gpio_set, + .set_config = gpiochip_generic_config, + .base = -1, + .ngpio = BCM2711_NUM_GPIOS, + .can_sleep = false, +}; + static void bcm2835_gpio_irq_handle_bank(struct bcm2835_pinctrl *pc, unsigned int bank, u32 mask) { @@ -401,7 +427,7 @@ static void bcm2835_gpio_irq_handler(struct irq_desc *desc) bcm2835_gpio_irq_handle_bank(pc, 0, 0xf0000000); bcm2835_gpio_irq_handle_bank(pc, 1, 0x00003fff); break; - case 2: /* IRQ2 covers GPIOs 46-53 */ + case 2: /* IRQ2 covers GPIOs 46-57 */ bcm2835_gpio_irq_handle_bank(pc, 1, 0x003fc000); break; } @@ -620,7 +646,7 @@ static struct irq_chip bcm2835_gpio_irq_chip = { static int bcm2835_pctl_get_groups_count(struct pinctrl_dev *pctldev) { - return ARRAY_SIZE(bcm2835_gpio_groups); + return BCM2835_NUM_GPIOS; } static const char *bcm2835_pctl_get_group_name(struct pinctrl_dev *pctldev, @@ -778,7 +804,7 @@ static int bcm2835_pctl_dt_node_to_map(struct pinctrl_dev *pctldev, err = of_property_read_u32_index(np, "brcm,pins", i, &pin); if (err) goto out; - if (pin >= ARRAY_SIZE(bcm2835_gpio_pins)) { + if (pin >= pc->pctl_desc.npins) { dev_err(pc->dev, "%pOF: invalid brcm,pins value %d\n", np, pin); err = -EINVAL; @@ -854,7 +880,7 @@ static int bcm2835_pmx_get_function_groups(struct pinctrl_dev *pctldev, { /* every pin can do every function */ *groups = bcm2835_gpio_groups; - *num_groups = ARRAY_SIZE(bcm2835_gpio_groups); + *num_groups = BCM2835_NUM_GPIOS; return 0; } @@ -1054,29 +1080,62 @@ static const struct pinconf_ops bcm2711_pinconf_ops = { .pin_config_set = bcm2711_pinconf_set, }; -static struct pinctrl_desc bcm2835_pinctrl_desc = { +static const struct pinctrl_desc bcm2835_pinctrl_desc = { .name = MODULE_NAME, .pins = bcm2835_gpio_pins, - .npins = ARRAY_SIZE(bcm2835_gpio_pins), + .npins = BCM2835_NUM_GPIOS, .pctlops = &bcm2835_pctl_ops, .pmxops = &bcm2835_pmx_ops, .confops = &bcm2835_pinconf_ops, .owner = THIS_MODULE, }; -static struct pinctrl_gpio_range bcm2835_pinctrl_gpio_range = { +static const struct pinctrl_desc bcm2711_pinctrl_desc = { + .name = "pinctrl-bcm2711", + .pins = bcm2835_gpio_pins, + .npins = BCM2711_NUM_GPIOS, + .pctlops = &bcm2835_pctl_ops, + .pmxops = &bcm2835_pmx_ops, + .confops = &bcm2711_pinconf_ops, + .owner = THIS_MODULE, +}; + +static const struct pinctrl_gpio_range bcm2835_pinctrl_gpio_range = { .name = MODULE_NAME, .npins = BCM2835_NUM_GPIOS, }; +static const struct pinctrl_gpio_range bcm2711_pinctrl_gpio_range = { + .name = "pinctrl-bcm2711", + .npins = BCM2711_NUM_GPIOS, +}; + +struct bcm_plat_data { + const struct gpio_chip *gpio_chip; + const struct pinctrl_desc *pctl_desc; + const struct pinctrl_gpio_range *gpio_range; +}; + +static const struct bcm_plat_data bcm2835_plat_data = { + .gpio_chip = &bcm2835_gpio_chip, + .pctl_desc = &bcm2835_pinctrl_desc, + .gpio_range = &bcm2835_pinctrl_gpio_range, +}; + +static const struct bcm_plat_data bcm2711_plat_data = { + .gpio_chip = &bcm2711_gpio_chip, + .pctl_desc = &bcm2711_pinctrl_desc, + .gpio_range = &bcm2711_pinctrl_gpio_range, +}; + static const struct of_device_id bcm2835_pinctrl_match[] = { { .compatible = "brcm,bcm2835-gpio", - .data = &bcm2835_pinconf_ops, + .data = &bcm2835_plat_data, }, { .compatible = "brcm,bcm2711-gpio", - .data = &bcm2711_pinconf_ops, + .data = &bcm2711_plat_data, }, {} }; @@ -1085,14 +1144,15 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; + const struct bcm_plat_data *pdata; struct bcm2835_pinctrl *pc; struct gpio_irq_chip *girq; struct resource iomem; int err, i; const struct of_device_id *match; - BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2835_NUM_GPIOS); - BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2835_NUM_GPIOS); + BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_pins) != BCM2711_NUM_GPIOS); + BUILD_BUG_ON(ARRAY_SIZE(bcm2835_gpio_groups) != BCM2711_NUM_GPIOS); pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL); if (!pc) @@ -1111,7 +1171,13 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev) if (IS_ERR(pc->base)) return PTR_ERR(pc->base); - pc->gpio_chip = bcm2835_gpio_chip; + match = of_match_node(bcm2835_pinctrl_match, pdev->dev.of_node); + if (!match) + return -EINVAL; + + pdata = match->data; + + pc->gpio_chip = *pdata->gpio_chip; pc->gpio_chip.parent = dev; pc->gpio_chip.of_node = np; @@ -1162,19 +1228,14 @@ static int bcm2835_pinctrl_probe(struct platform_device *pdev) return err; } - match = of_match_node(bcm2835_pinctrl_match, pdev->dev.of_node); - if (match) { - bcm2835_pinctrl_desc.confops = - (const struct pinconf_ops *)match->data; - } - - pc->pctl_dev = devm_pinctrl_register(dev, &bcm2835_pinctrl_desc, pc); + pc->pctl_desc = *pdata->pctl_desc; + pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc); if (IS_ERR(pc->pctl_dev)) { gpiochip_remove(&pc->gpio_chip); return PTR_ERR(pc->pctl_dev); } - pc->gpio_range = bcm2835_pinctrl_gpio_range; + pc->gpio_range = *pdata->gpio_range; pc->gpio_range.base = pc->gpio_chip.base; pc->gpio_range.gc = &pc->gpio_chip; pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range); |