diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 9da0bc5a036cfff6af0395ace48cad20ae9852d6..e042ecbb67c67ead81a9b6a069bb0b9d2984ba13 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2031,16 +2031,13 @@ struct spi_controller *__spi_alloc_controller(struct device *dev, } EXPORT_SYMBOL_GPL(__spi_alloc_controller); -#ifdef CONFIG_OF -static int of_spi_register_master(struct spi_controller *ctlr) +static int __spi_register_controller(struct spi_controller *ctlr) { int nb, i, *cs; struct device_node *np = ctlr->dev.of_node; + struct gpio_desc *desc; - if (!np) - return 0; - - nb = of_gpio_named_count(np, "cs-gpios"); + nb = gpiod_count(&ctlr->dev, "cs"); ctlr->num_chipselect = max_t(int, nb, ctlr->num_chipselect); /* Return error only for an incorrectly formed cs-gpios property */ @@ -2059,17 +2056,20 @@ static int of_spi_register_master(struct spi_controller *ctlr) for (i = 0; i < ctlr->num_chipselect; i++) cs[i] = -ENOENT; - for (i = 0; i < nb; i++) - cs[i] = of_get_named_gpio(np, "cs-gpios", i); - - return 0; -} -#else -static int of_spi_register_master(struct spi_controller *ctlr) -{ + if (IS_ENABLED(CONFIG_OF) && np) { + for (i = 0; i < nb; i++) + cs[i] = of_get_named_gpio(np, "cs-gpios", i); + } else if (IS_ENABLED(CONFIG_ACPI) && ACPI_HANDLE(&ctlr->dev)) { + for (i = 0; i < nb; i++) { + desc = devm_gpiod_get_index(&ctlr->dev, "cs", + i, GPIOD_ASIS); + if (IS_ERR(desc)) + continue; + cs[i] = desc_to_gpio(desc); + } + } return 0; } -#endif static int spi_controller_check_ops(struct spi_controller *ctlr) { @@ -2133,7 +2133,7 @@ int spi_register_controller(struct spi_controller *ctlr) return status; if (!spi_controller_is_slave(ctlr)) { - status = of_spi_register_master(ctlr); + status = __spi_register_controller(ctlr); if (status) return status; }