diff options
Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-msm.c')
-rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index 2155a30c282b..cad74093f7ba 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -176,11 +176,27 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev, return 0; } +static int msm_pinmux_request_gpio(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset) +{ + struct msm_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); + const struct msm_pingroup *g = &pctrl->soc->groups[offset]; + + /* No funcs? Probably ACPI so can't do anything here */ + if (!g->nfuncs) + return 0; + + /* For now assume function 0 is GPIO because it always is */ + return msm_pinmux_set_mux(pctldev, 0, offset); +} + static const struct pinmux_ops msm_pinmux_ops = { .request = msm_pinmux_request, .get_functions_count = msm_get_functions_count, .get_function_name = msm_get_function_name, .get_function_groups = msm_get_function_groups, + .gpio_request_enable = msm_pinmux_request_gpio, .set_mux = msm_pinmux_set_mux, }; @@ -797,6 +813,41 @@ static int msm_gpio_irq_set_wake(struct irq_data *d, unsigned int on) return 0; } +static int msm_gpio_irq_reqres(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + struct msm_pinctrl *pctrl = gpiochip_get_data(gc); + int ret; + + if (!try_module_get(gc->owner)) + return -ENODEV; + + ret = msm_pinmux_request_gpio(pctrl->pctrl, NULL, d->hwirq); + if (ret) + goto out; + msm_gpio_direction_input(gc, d->hwirq); + + if (gpiochip_lock_as_irq(gc, d->hwirq)) { + dev_err(gc->parent, + "unable to lock HW IRQ %lu for IRQ\n", + d->hwirq); + ret = -EINVAL; + goto out; + } + return 0; +out: + module_put(gc->owner); + return ret; +} + +static void msm_gpio_irq_relres(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + + gpiochip_unlock_as_irq(gc, d->hwirq); + module_put(gc->owner); +} + static void msm_gpio_irq_handler(struct irq_desc *desc) { struct gpio_chip *gc = irq_desc_get_handler_data(desc); @@ -895,6 +946,8 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl) pctrl->irq_chip.irq_ack = msm_gpio_irq_ack; pctrl->irq_chip.irq_set_type = msm_gpio_irq_set_type; pctrl->irq_chip.irq_set_wake = msm_gpio_irq_set_wake; + pctrl->irq_chip.irq_request_resources = msm_gpio_irq_reqres; + pctrl->irq_chip.irq_release_resources = msm_gpio_irq_relres; ret = gpiochip_add_data(&pctrl->chip, pctrl); if (ret) { |