#include <linux/spi/spi.h>
#include <linux/crc7.h>
#include <linux/crc-itu-t.h>
+#include <linux/gpio/consumer.h>
#include "netdev.h"
#include "cfg80211.h"
bool probing_crc; /* true if we're probing chip's CRC config */
bool crc7_enabled; /* true if crc7 is currently enabled */
bool crc16_enabled; /* true if crc16 is currently enabled */
+ struct wilc_gpios {
+ struct gpio_desc *enable; /* ENABLE GPIO or NULL */
+ struct gpio_desc *reset; /* RESET GPIO or NULL */
+ } gpios;
};
static const struct wilc_hif_func wilc_hif_spi;
u8 status;
} __packed;
+static int wilc_parse_gpios(struct wilc *wilc)
+{
+ struct spi_device *spi = to_spi_device(wilc->dev);
+ struct wilc_spi *spi_priv = wilc->bus_data;
+ struct wilc_gpios *gpios = &spi_priv->gpios;
+
+ /* get ENABLE pin and deassert it (if it is defined): */
+ gpios->enable = devm_gpiod_get_optional(&spi->dev,
+ "enable", GPIOD_OUT_LOW);
+ /* get RESET pin and assert it (if it is defined): */
+ if (gpios->enable) {
+ /* if enable pin exists, reset must exist as well */
+ gpios->reset = devm_gpiod_get(&spi->dev,
+ "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(gpios->reset)) {
+ dev_err(&spi->dev, "missing reset gpio.\n");
+ return PTR_ERR(gpios->reset);
+ }
+ } else {
+ gpios->reset = devm_gpiod_get_optional(&spi->dev,
+ "reset", GPIOD_OUT_HIGH);
+ }
+ return 0;
+}
+
+static void wilc_wlan_power(struct wilc *wilc, bool on)
+{
+ struct wilc_spi *spi_priv = wilc->bus_data;
+ struct wilc_gpios *gpios = &spi_priv->gpios;
+
+ if (on) {
+ /* assert ENABLE: */
+ gpiod_set_value(gpios->enable, 1);
+ mdelay(5);
+ /* deassert RESET: */
+ gpiod_set_value(gpios->reset, 0);
+ } else {
+ /* assert RESET: */
+ gpiod_set_value(gpios->reset, 1);
+ /* deassert ENABLE: */
+ gpiod_set_value(gpios->enable, 0);
+ }
+}
+
static int wilc_bus_probe(struct spi_device *spi)
{
int ret;
wilc->bus_data = spi_priv;
wilc->dev_irq_num = spi->irq;
+ ret = wilc_parse_gpios(wilc);
+ if (ret < 0)
+ goto netdev_cleanup;
+
wilc->rtc_clk = devm_clk_get_optional(&spi->dev, "rtc");
if (IS_ERR(wilc->rtc_clk)) {
ret = PTR_ERR(wilc->rtc_clk);
static int wilc_spi_deinit(struct wilc *wilc)
{
- /*
- * TODO:
- */
+ struct wilc_spi *spi_priv = wilc->bus_data;
+
+ spi_priv->isinit = false;
+ wilc_wlan_power(wilc, false);
return 0;
}
dev_err(&spi->dev, "Fail cmd read chip id...\n");
}
+ wilc_wlan_power(wilc, true);
+
/*
* configure protocol
*/