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authorLinus Walleij <linus.walleij@linaro.org>2018-11-20 10:47:32 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-05 03:15:25 +0300
commitcd56f35e52d9496cbf5c85d27af9bdb064bec8df (patch)
tree985a7967672952f22f971cc3f9f1d70a2a07773b /drivers/ata/pata_rb532_cf.c
parent83a7faace12e1bca6f659e117cde85769385fe08 (diff)
downloadlinux-cd56f35e52d9496cbf5c85d27af9bdb064bec8df.tar.xz
ata: rb532_cf: Convert to use GPIO descriptors
Pass a GPIO descriptor for the device instead of a hardcoded GPIO number from the global GPIO numberspace. Use gpio descriptors throughout. Cut the now completely unused platform data for the CF slot. Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Waldemar Brodkorb <wbx@openadk.org> Cc: Matt Redfearn <matt.redfearn@mips.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/ata/pata_rb532_cf.c')
-rw-r--r--drivers/ata/pata_rb532_cf.c45
1 files changed, 10 insertions, 35 deletions
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index 653b9a0bf727..66bb5bff126b 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -27,7 +27,7 @@
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/libata.h>
#include <scsi/scsi_host.h>
@@ -49,7 +49,7 @@
struct rb532_cf_info {
void __iomem *iobase;
- unsigned int gpio_line;
+ struct gpio_desc *gpio_line;
unsigned int irq;
};
@@ -60,7 +60,7 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
struct ata_host *ah = dev_instance;
struct rb532_cf_info *info = ah->private_data;
- if (gpio_get_value(info->gpio_line)) {
+ if (gpiod_get_value(info->gpio_line)) {
irq_set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW);
ata_sff_interrupt(info->irq, dev_instance);
} else {
@@ -106,10 +106,9 @@ static void rb532_pata_setup_ports(struct ata_host *ah)
static int rb532_pata_driver_probe(struct platform_device *pdev)
{
int irq;
- int gpio;
+ struct gpio_desc *gpiod;
struct resource *res;
struct ata_host *ah;
- struct cf_device *pdata;
struct rb532_cf_info *info;
int ret;
@@ -125,23 +124,12 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
return -ENOENT;
}
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "no platform data specified\n");
- return -EINVAL;
- }
-
- gpio = pdata->gpio_pin;
- if (gpio < 0) {
+ gpiod = devm_gpiod_get(&pdev->dev, NULL, GPIOD_IN);
+ if (IS_ERR(gpiod)) {
dev_err(&pdev->dev, "no GPIO found for irq%d\n", irq);
- return -ENOENT;
- }
-
- ret = gpio_request(gpio, DRV_NAME);
- if (ret) {
- dev_err(&pdev->dev, "GPIO request failed\n");
- return ret;
+ return PTR_ERR(gpiod);
}
+ gpiod_set_consumer_name(gpiod, DRV_NAME);
/* allocate host */
ah = ata_host_alloc(&pdev->dev, RB500_CF_MAXPORTS);
@@ -153,7 +141,7 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
return -ENOMEM;
ah->private_data = info;
- info->gpio_line = gpio;
+ info->gpio_line = gpiod;
info->irq = irq;
info->iobase = devm_ioremap_nocache(&pdev->dev, res->start,
@@ -161,26 +149,14 @@ static int rb532_pata_driver_probe(struct platform_device *pdev)
if (!info->iobase)
return -ENOMEM;
- ret = gpio_direction_input(gpio);
- if (ret) {
- dev_err(&pdev->dev, "unable to set GPIO direction, err=%d\n",
- ret);
- goto err_free_gpio;
- }
-
rb532_pata_setup_ports(ah);
ret = ata_host_activate(ah, irq, rb532_pata_irq_handler,
IRQF_TRIGGER_LOW, &rb532_pata_sht);
if (ret)
- goto err_free_gpio;
+ return ret;
return 0;
-
-err_free_gpio:
- gpio_free(gpio);
-
- return ret;
}
static int rb532_pata_driver_remove(struct platform_device *pdev)
@@ -189,7 +165,6 @@ static int rb532_pata_driver_remove(struct platform_device *pdev)
struct rb532_cf_info *info = ah->private_data;
ata_host_detach(ah);
- gpio_free(info->gpio_line);
return 0;
}