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path: root/drivers/net/ieee802154/cc2520.c
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Diffstat (limited to 'drivers/net/ieee802154/cc2520.c')
-rw-r--r--drivers/net/ieee802154/cc2520.c136
1 files changed, 37 insertions, 99 deletions
diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c
index edc769daad07..a94d8dd71aad 100644
--- a/drivers/net/ieee802154/cc2520.c
+++ b/drivers/net/ieee802154/cc2520.c
@@ -7,14 +7,13 @@
*/
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
-#include <linux/spi/cc2520.h>
+#include <linux/property.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/skbuff.h>
-#include <linux/of_gpio.h>
#include <linux/ieee802154.h>
#include <linux/crc-ccitt.h>
#include <asm/unaligned.h>
@@ -206,7 +205,7 @@ struct cc2520_private {
struct mutex buffer_mutex; /* SPI buffer mutex */
bool is_tx; /* Flag for sync b/w Tx and Rx */
bool amplified; /* Flag for CC2591 */
- int fifo_pin; /* FIFO GPIO pin number */
+ struct gpio_desc *fifo_pin; /* FIFO GPIO pin number */
struct work_struct fifop_irqwork;/* Workqueue for FIFOP */
spinlock_t lock; /* Lock for is_tx*/
struct completion tx_complete; /* Work completion for Tx */
@@ -875,7 +874,7 @@ static void cc2520_fifop_irqwork(struct work_struct *work)
dev_dbg(&priv->spi->dev, "fifop interrupt received\n");
- if (gpio_get_value(priv->fifo_pin))
+ if (gpiod_get_value(priv->fifo_pin))
cc2520_rx(priv);
else
dev_dbg(&priv->spi->dev, "rxfifo overflow\n");
@@ -912,49 +911,11 @@ static irqreturn_t cc2520_sfd_isr(int irq, void *data)
return IRQ_HANDLED;
}
-static int cc2520_get_platform_data(struct spi_device *spi,
- struct cc2520_platform_data *pdata)
-{
- struct device_node *np = spi->dev.of_node;
- struct cc2520_private *priv = spi_get_drvdata(spi);
-
- if (!np) {
- struct cc2520_platform_data *spi_pdata = spi->dev.platform_data;
-
- if (!spi_pdata)
- return -ENOENT;
- *pdata = *spi_pdata;
- priv->fifo_pin = pdata->fifo;
- return 0;
- }
-
- pdata->fifo = of_get_named_gpio(np, "fifo-gpio", 0);
- priv->fifo_pin = pdata->fifo;
-
- pdata->fifop = of_get_named_gpio(np, "fifop-gpio", 0);
-
- pdata->sfd = of_get_named_gpio(np, "sfd-gpio", 0);
- pdata->cca = of_get_named_gpio(np, "cca-gpio", 0);
- pdata->vreg = of_get_named_gpio(np, "vreg-gpio", 0);
- pdata->reset = of_get_named_gpio(np, "reset-gpio", 0);
-
- /* CC2591 front end for CC2520 */
- if (of_property_read_bool(np, "amplified"))
- priv->amplified = true;
-
- return 0;
-}
-
static int cc2520_hw_init(struct cc2520_private *priv)
{
u8 status = 0, state = 0xff;
int ret;
int timeout = 100;
- struct cc2520_platform_data pdata;
-
- ret = cc2520_get_platform_data(priv->spi, &pdata);
- if (ret)
- goto err_ret;
ret = cc2520_read_register(priv, CC2520_FSMSTAT1, &state);
if (ret)
@@ -1071,7 +1032,11 @@ err_ret:
static int cc2520_probe(struct spi_device *spi)
{
struct cc2520_private *priv;
- struct cc2520_platform_data pdata;
+ struct gpio_desc *fifop;
+ struct gpio_desc *cca;
+ struct gpio_desc *sfd;
+ struct gpio_desc *reset;
+ struct gpio_desc *vreg;
int ret;
priv = devm_kzalloc(&spi->dev, sizeof(*priv), GFP_KERNEL);
@@ -1080,11 +1045,11 @@ static int cc2520_probe(struct spi_device *spi)
spi_set_drvdata(spi, priv);
- ret = cc2520_get_platform_data(spi, &pdata);
- if (ret < 0) {
- dev_err(&spi->dev, "no platform data\n");
- return -EINVAL;
- }
+ /* CC2591 front end for CC2520 */
+ /* Assumption that CC2591 is not connected */
+ priv->amplified = false;
+ if (device_property_read_bool(&spi->dev, "amplified"))
+ priv->amplified = true;
priv->spi = spi;
@@ -1098,80 +1063,53 @@ static int cc2520_probe(struct spi_device *spi)
spin_lock_init(&priv->lock);
init_completion(&priv->tx_complete);
- /* Assumption that CC2591 is not connected */
- priv->amplified = false;
-
/* Request all the gpio's */
- if (!gpio_is_valid(pdata.fifo)) {
+ priv->fifo_pin = devm_gpiod_get(&spi->dev, "fifo", GPIOD_IN);
+ if (IS_ERR(priv->fifo_pin)) {
dev_err(&spi->dev, "fifo gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(priv->fifo_pin);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.fifo,
- GPIOF_IN, "fifo");
- if (ret)
- goto err_hw_init;
-
- if (!gpio_is_valid(pdata.cca)) {
+ cca = devm_gpiod_get(&spi->dev, "cca", GPIOD_IN);
+ if (IS_ERR(cca)) {
dev_err(&spi->dev, "cca gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(cca);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.cca,
- GPIOF_IN, "cca");
- if (ret)
- goto err_hw_init;
-
- if (!gpio_is_valid(pdata.fifop)) {
+ fifop = devm_gpiod_get(&spi->dev, "fifop", GPIOD_IN);
+ if (IS_ERR(fifop)) {
dev_err(&spi->dev, "fifop gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(fifop);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.fifop,
- GPIOF_IN, "fifop");
- if (ret)
- goto err_hw_init;
-
- if (!gpio_is_valid(pdata.sfd)) {
+ sfd = devm_gpiod_get(&spi->dev, "sfd", GPIOD_IN);
+ if (IS_ERR(sfd)) {
dev_err(&spi->dev, "sfd gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(sfd);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.sfd,
- GPIOF_IN, "sfd");
- if (ret)
- goto err_hw_init;
-
- if (!gpio_is_valid(pdata.reset)) {
+ reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(reset)) {
dev_err(&spi->dev, "reset gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(reset);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.reset,
- GPIOF_OUT_INIT_LOW, "reset");
- if (ret)
- goto err_hw_init;
-
- if (!gpio_is_valid(pdata.vreg)) {
+ vreg = devm_gpiod_get(&spi->dev, "vreg", GPIOD_OUT_LOW);
+ if (IS_ERR(vreg)) {
dev_err(&spi->dev, "vreg gpio is not valid\n");
- ret = -EINVAL;
+ ret = PTR_ERR(vreg);
goto err_hw_init;
}
- ret = devm_gpio_request_one(&spi->dev, pdata.vreg,
- GPIOF_OUT_INIT_LOW, "vreg");
- if (ret)
- goto err_hw_init;
-
- gpio_set_value(pdata.vreg, HIGH);
+ gpiod_set_value(vreg, HIGH);
usleep_range(100, 150);
- gpio_set_value(pdata.reset, HIGH);
+ gpiod_set_value(reset, HIGH);
usleep_range(200, 250);
ret = cc2520_hw_init(priv);
@@ -1180,7 +1118,7 @@ static int cc2520_probe(struct spi_device *spi)
/* Set up fifop interrupt */
ret = devm_request_irq(&spi->dev,
- gpio_to_irq(pdata.fifop),
+ gpiod_to_irq(fifop),
cc2520_fifop_isr,
IRQF_TRIGGER_RISING,
dev_name(&spi->dev),
@@ -1192,7 +1130,7 @@ static int cc2520_probe(struct spi_device *spi)
/* Set up sfd interrupt */
ret = devm_request_irq(&spi->dev,
- gpio_to_irq(pdata.sfd),
+ gpiod_to_irq(sfd),
cc2520_sfd_isr,
IRQF_TRIGGER_FALLING,
dev_name(&spi->dev),
@@ -1241,7 +1179,7 @@ MODULE_DEVICE_TABLE(of, cc2520_of_ids);
static struct spi_driver cc2520_driver = {
.driver = {
.name = "cc2520",
- .of_match_table = of_match_ptr(cc2520_of_ids),
+ .of_match_table = cc2520_of_ids,
},
.id_table = cc2520_ids,
.probe = cc2520_probe,
generated by cgit (git 2.34.1) at 2024-05-28 10:03:17 +0000