diff options
Diffstat (limited to 'drivers/staging/wilc1000/wilc_spi.c')
| -rw-r--r-- | drivers/staging/wilc1000/wilc_spi.c | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/drivers/staging/wilc1000/wilc_spi.c b/drivers/staging/wilc1000/wilc_spi.c index 647526387784..5517477d875a 100644 --- a/drivers/staging/wilc1000/wilc_spi.c +++ b/drivers/staging/wilc1000/wilc_spi.c @@ -1,12 +1,10 @@ // SPDX-License-Identifier: GPL-2.0 /* - * Copyright (c) Atmel Corporation. All rights reserved. - * - * Module Name: wilc_spi.c + * Copyright (c) 2012 - 2018 Microchip Technology Inc., and its subsidiaries. + * All rights reserved. */ #include <linux/spi/spi.h> -#include <linux/of_gpio.h> #include "wilc_wfi_netdevice.h" @@ -106,44 +104,55 @@ static u8 crc7(u8 crc, const u8 *buffer, u32 len) static int wilc_bus_probe(struct spi_device *spi) { - int ret, gpio; + int ret; struct wilc *wilc; + struct gpio_desc *gpio; + + gpio = gpiod_get(&spi->dev, "irq", GPIOD_IN); + if (IS_ERR(gpio)) { + /* get the GPIO descriptor from hardcode GPIO number */ + gpio = gpio_to_desc(GPIO_NUM); + if (!gpio) + dev_err(&spi->dev, "failed to get the irq gpio\n"); + } - gpio = of_get_gpio(spi->dev.of_node, 0); - if (gpio < 0) - gpio = GPIO_NUM; - - ret = wilc_netdev_init(&wilc, NULL, HIF_SPI, GPIO_NUM, &wilc_hif_spi); + ret = wilc_netdev_init(&wilc, NULL, HIF_SPI, &wilc_hif_spi); if (ret) return ret; spi_set_drvdata(spi, wilc); wilc->dev = &spi->dev; + wilc->gpio_irq = gpio; return 0; } static int wilc_bus_remove(struct spi_device *spi) { - wilc_netdev_cleanup(spi_get_drvdata(spi)); + struct wilc *wilc = spi_get_drvdata(spi); + + /* free the GPIO in module remove */ + if (wilc->gpio_irq) + gpiod_put(wilc->gpio_irq); + wilc_netdev_cleanup(wilc); return 0; } -static const struct of_device_id wilc1000_of_match[] = { - { .compatible = "atmel,wilc_spi", }, - {} +static const struct of_device_id wilc_of_match[] = { + { .compatible = "microchip,wilc1000-spi", }, + { /* sentinel */ } }; -MODULE_DEVICE_TABLE(of, wilc1000_of_match); +MODULE_DEVICE_TABLE(of, wilc_of_match); -static struct spi_driver wilc1000_spi_driver = { +static struct spi_driver wilc_spi_driver = { .driver = { .name = MODALIAS, - .of_match_table = wilc1000_of_match, + .of_match_table = wilc_of_match, }, .probe = wilc_bus_probe, .remove = wilc_bus_remove, }; -module_spi_driver(wilc1000_spi_driver); +module_spi_driver(wilc_spi_driver); MODULE_LICENSE("GPL"); static int wilc_spi_tx(struct wilc *wilc, u8 *b, u32 len) @@ -668,7 +677,7 @@ static int spi_internal_write(struct wilc *wilc, u32 adr, u32 dat) struct spi_device *spi = to_spi_device(wilc->dev); int result; - dat = cpu_to_le32(dat); + cpu_to_le32s(&dat); result = spi_cmd_complete(wilc, CMD_INTERNAL_WRITE, adr, (u8 *)&dat, 4, 0); if (result != N_OK) @@ -689,7 +698,7 @@ static int spi_internal_read(struct wilc *wilc, u32 adr, u32 *data) return 0; } - *data = cpu_to_le32(*data); + le32_to_cpus(data); return 1; } @@ -707,7 +716,7 @@ static int wilc_spi_write_reg(struct wilc *wilc, u32 addr, u32 data) u8 cmd = CMD_SINGLE_WRITE; u8 clockless = 0; - data = cpu_to_le32(data); + cpu_to_le32s(&data); if (addr < 0x30) { /* Clockless register */ cmd = CMD_INTERNAL_WRITE; @@ -757,7 +766,6 @@ static int wilc_spi_read_reg(struct wilc *wilc, u32 addr, u32 *data) u8 clockless = 0; if (addr < 0x30) { - /* dev_err(&spi->dev, "***** read addr %d\n\n", addr); */ /* Clockless register */ cmd = CMD_INTERNAL_READ; clockless = 1; @@ -769,7 +777,7 @@ static int wilc_spi_read_reg(struct wilc *wilc, u32 addr, u32 *data) return 0; } - *data = cpu_to_le32(*data); + le32_to_cpus(data); return 1; } |