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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-09-01 19:15:06 +0300
committerTakashi Iwai <tiwai@suse.de>2017-09-04 11:56:48 +0200
commit5f10e84934e4ef2289d1335087529685e5e679cc (patch)
tree8995e4a93b69a8b5ec9e68b6d48b2d014f8ed167 /sound
parentALSA: hda/realtek - Enable jack detection function for Intel ALC700 (diff)
downloadlinux-dev-5f10e84934e4ef2289d1335087529685e5e679cc.tar.xz
linux-dev-5f10e84934e4ef2289d1335087529685e5e679cc.zip
ALSA: atmel: convert AC97c driver to GPIO descriptor API
Convert the driver to use GPIO descriptor API. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/atmel/ac97c.c70
1 files changed, 10 insertions, 60 deletions
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 24623c790773..31914912c0ba 100644
--- a/sound/atmel/ac97c.c
+++ b/sound/atmel/ac97c.c
@@ -12,16 +12,15 @@
#include <linux/bitmap.h>
#include <linux/device.h>
#include <linux/atmel_pdc.h>
+#include <linux/gpio/consumer.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
-#include <linux/gpio.h>
#include <linux/types.h>
#include <linux/io.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <linux/of_device.h>
#include <sound/core.h>
@@ -29,7 +28,6 @@
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/ac97_codec.h>
-#include <sound/atmel-ac97c.h>
#include <sound/memalloc.h>
#include "ac97c.h"
@@ -56,7 +54,7 @@ struct atmel_ac97c {
void __iomem *regs;
int irq;
int opened;
- int reset_pin;
+ struct gpio_desc *reset_pin;
};
#define get_chip(card) ((struct atmel_ac97c *)(card)->private_data)
@@ -700,11 +698,11 @@ static void atmel_ac97c_reset(struct atmel_ac97c *chip)
ac97c_writel(chip, CAMR, 0);
ac97c_writel(chip, COMR, 0);
- if (gpio_is_valid(chip->reset_pin)) {
- gpio_set_value(chip->reset_pin, 0);
+ if (!IS_ERR(chip->reset_pin)) {
+ gpiod_set_value(chip->reset_pin, 0);
/* AC97 v2.2 specifications says minimum 1 us. */
udelay(2);
- gpio_set_value(chip->reset_pin, 1);
+ gpiod_set_value(chip->reset_pin, 1);
} else {
ac97c_writel(chip, MR, AC97C_MR_WRST | AC97C_MR_ENA);
udelay(2);
@@ -712,45 +710,18 @@ static void atmel_ac97c_reset(struct atmel_ac97c *chip)
}
}
-#ifdef CONFIG_OF
static const struct of_device_id atmel_ac97c_dt_ids[] = {
{ .compatible = "atmel,at91sam9263-ac97c", },
{ }
};
MODULE_DEVICE_TABLE(of, atmel_ac97c_dt_ids);
-static struct ac97c_platform_data *atmel_ac97c_probe_dt(struct device *dev)
-{
- struct ac97c_platform_data *pdata;
- struct device_node *node = dev->of_node;
-
- if (!node) {
- dev_err(dev, "Device does not have associated DT data\n");
- return ERR_PTR(-EINVAL);
- }
-
- pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
- if (!pdata)
- return ERR_PTR(-ENOMEM);
-
- pdata->reset_pin = of_get_named_gpio(dev->of_node, "ac97-gpios", 2);
-
- return pdata;
-}
-#else
-static struct ac97c_platform_data *atmel_ac97c_probe_dt(struct device *dev)
-{
- dev_err(dev, "no platform data defined\n");
- return ERR_PTR(-ENXIO);
-}
-#endif
-
static int atmel_ac97c_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
struct snd_card *card;
struct atmel_ac97c *chip;
struct resource *regs;
- struct ac97c_platform_data *pdata;
struct clk *pclk;
static struct snd_ac97_bus_ops ops = {
.write = atmel_ac97c_write,
@@ -765,13 +736,6 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
return -ENXIO;
}
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- pdata = atmel_ac97c_probe_dt(&pdev->dev);
- if (IS_ERR(pdata))
- return PTR_ERR(pdata);
- }
-
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_dbg(&pdev->dev, "could not get irq: %d\n", irq);
@@ -819,17 +783,9 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
goto err_ioremap;
}
- if (gpio_is_valid(pdata->reset_pin)) {
- if (gpio_request(pdata->reset_pin, "reset_pin")) {
- dev_dbg(&pdev->dev, "reset pin not available\n");
- chip->reset_pin = -ENODEV;
- } else {
- gpio_direction_output(pdata->reset_pin, 1);
- chip->reset_pin = pdata->reset_pin;
- }
- } else {
- chip->reset_pin = -EINVAL;
- }
+ chip->reset_pin = devm_gpiod_get_index(dev, "ac97", 2, GPIOD_OUT_HIGH);
+ if (IS_ERR(chip->reset_pin))
+ dev_dbg(dev, "reset pin not available\n");
atmel_ac97c_reset(chip);
@@ -869,9 +825,6 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
return 0;
err_ac97_bus:
- if (gpio_is_valid(chip->reset_pin))
- gpio_free(chip->reset_pin);
-
iounmap(chip->regs);
err_ioremap:
free_irq(irq, chip);
@@ -913,9 +866,6 @@ static int atmel_ac97c_remove(struct platform_device *pdev)
struct snd_card *card = platform_get_drvdata(pdev);
struct atmel_ac97c *chip = get_chip(card);
- if (gpio_is_valid(chip->reset_pin))
- gpio_free(chip->reset_pin);
-
ac97c_writel(chip, CAMR, 0);
ac97c_writel(chip, COMR, 0);
ac97c_writel(chip, MR, 0);
@@ -936,7 +886,7 @@ static struct platform_driver atmel_ac97c_driver = {
.driver = {
.name = "atmel_ac97c",
.pm = ATMEL_AC97C_PM_OPS,
- .of_match_table = of_match_ptr(atmel_ac97c_dt_ids),
+ .of_match_table = atmel_ac97c_dt_ids,
},
};
module_platform_driver(atmel_ac97c_driver);