summaryrefslogtreecommitdiffstats
path: root/sound/atmel/ac97c.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/atmel/ac97c.c')
-rw-r--r--sound/atmel/ac97c.c87
1 files changed, 20 insertions, 67 deletions
diff --git a/sound/atmel/ac97c.c b/sound/atmel/ac97c.c
index 9d2c9d9af688..380025887aef 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)
@@ -66,7 +64,7 @@ struct atmel_ac97c {
#define ac97c_readl(chip, reg) \
__raw_readl((chip)->regs + AC97C_##reg)
-static struct snd_pcm_hardware atmel_ac97c_hw = {
+static const struct snd_pcm_hardware atmel_ac97c_hw = {
.info = (SNDRV_PCM_INFO_MMAP
| SNDRV_PCM_INFO_MMAP_VALID
| SNDRV_PCM_INFO_INTERLEAVED
@@ -461,7 +459,7 @@ atmel_ac97c_capture_pointer(struct snd_pcm_substream *substream)
return frames;
}
-static struct snd_pcm_ops atmel_ac97_playback_ops = {
+static const struct snd_pcm_ops atmel_ac97_playback_ops = {
.open = atmel_ac97c_playback_open,
.close = atmel_ac97c_playback_close,
.ioctl = snd_pcm_lib_ioctl,
@@ -472,7 +470,7 @@ static struct snd_pcm_ops atmel_ac97_playback_ops = {
.pointer = atmel_ac97c_playback_pointer,
};
-static struct snd_pcm_ops atmel_ac97_capture_ops = {
+static const struct snd_pcm_ops atmel_ac97_capture_ops = {
.open = atmel_ac97c_capture_open,
.close = atmel_ac97c_capture_close,
.ioctl = snd_pcm_lib_ioctl,
@@ -558,7 +556,7 @@ static irqreturn_t atmel_ac97c_interrupt(int irq, void *dev)
return retval;
}
-static struct ac97_pcm at91_ac97_pcm_defs[] = {
+static const struct ac97_pcm at91_ac97_pcm_defs[] = {
/* Playback */
{
.exclusive = 1,
@@ -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);
@@ -783,7 +747,9 @@ static int atmel_ac97c_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev, "no peripheral clock\n");
return PTR_ERR(pclk);
}
- clk_prepare_enable(pclk);
+ retval = clk_prepare_enable(pclk);
+ if (retval)
+ goto err_prepare_enable;
retval = snd_card_new(&pdev->dev, SNDRV_DEFAULT_IDX1,
SNDRV_DEFAULT_STR1, THIS_MODULE,
@@ -819,17 +785,9 @@ 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 +827,6 @@ 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);
@@ -879,6 +834,7 @@ err_request_irq:
snd_card_free(card);
err_snd_card_new:
clk_disable_unprepare(pclk);
+err_prepare_enable:
clk_put(pclk);
return retval;
}
@@ -897,9 +853,9 @@ static int atmel_ac97c_resume(struct device *pdev)
{
struct snd_card *card = dev_get_drvdata(pdev);
struct atmel_ac97c *chip = card->private_data;
+ int ret = clk_prepare_enable(chip->pclk);
- clk_prepare_enable(chip->pclk);
- return 0;
+ return ret;
}
static SIMPLE_DEV_PM_OPS(atmel_ac97c_pm, atmel_ac97c_suspend, atmel_ac97c_resume);
@@ -913,9 +869,6 @@ 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 +889,7 @@ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 11:10:45 +0000