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From: Takashi Iwai <tiwai@suse.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Eric Anholt <eric@anholt.net>,
	Stefan Wahren <stefan.wahren@i2se.com>,
	linux-rpi-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 21/29] staging: bcm2835-audio: Use card->private_data
Date: Tue,  4 Sep 2018 17:58:50 +0200
Message-ID: <20180904155858.8001-22-tiwai@suse.de> (raw)
In-Reply-To: <20180904155858.8001-1-tiwai@suse.de>

Instead of allocating a separate snd_device object, let snd_card_new()
allocate the private resource.  This simplifies the code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 .../vc04_services/bcm2835-audio/bcm2835.c     | 91 +++----------------
 1 file changed, 13 insertions(+), 78 deletions(-)

diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
index 6876a5eadc07..55e7fbc3ec44 100644
--- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
+++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835.c
@@ -86,9 +86,6 @@ static int bcm2835_devm_add_vchi_ctx(struct device *dev)
 
 static void snd_bcm2835_release(struct device *dev)
 {
-	struct bcm2835_chip *chip = dev_get_drvdata(dev);
-
-	kfree(chip);
 }
 
 static struct device *
@@ -117,69 +114,6 @@ snd_create_device(struct device *parent,
 	return device;
 }
 
-/* component-destructor
- * (see "Management of Cards and Components")
- */
-static int snd_bcm2835_dev_free(struct snd_device *device)
-{
-	struct bcm2835_chip *chip = device->device_data;
-	struct snd_card *card = chip->card;
-
-	snd_device_free(card, chip);
-
-	return 0;
-}
-
-/* chip-specific constructor
- * (see "Management of Cards and Components")
- */
-static int snd_bcm2835_create(struct snd_card *card,
-			      struct bcm2835_chip **rchip)
-{
-	struct bcm2835_chip *chip;
-	int err;
-	static struct snd_device_ops ops = {
-		.dev_free = snd_bcm2835_dev_free,
-	};
-
-	*rchip = NULL;
-
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
-	chip->card = card;
-	mutex_init(&chip->audio_mutex);
-
-	chip->vchi_ctx = devres_find(card->dev->parent,
-				     bcm2835_devm_free_vchi_ctx, NULL, NULL);
-	if (!chip->vchi_ctx) {
-		kfree(chip);
-		return -ENODEV;
-	}
-
-	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
-	if (err) {
-		kfree(chip);
-		return err;
-	}
-
-	*rchip = chip;
-	return 0;
-}
-
-static struct snd_card *snd_bcm2835_card_new(struct device *dev)
-{
-	struct snd_card *card;
-	int ret;
-
-	ret = snd_card_new(dev, -1, NULL, THIS_MODULE, 0, &card);
-	if (ret)
-		return ERR_PTR(ret);
-
-	return card;
-}
-
 typedef int (*bcm2835_audio_newpcm_func)(struct bcm2835_chip *chip,
 					 const char *name,
 					 enum snd_bcm2835_route route,
@@ -292,25 +226,26 @@ static int snd_add_child_device(struct device *device,
 		return PTR_ERR(child);
 	}
 
-	card = snd_bcm2835_card_new(child);
-	if (IS_ERR(card)) {
+	err = snd_card_new(child, -1, NULL, THIS_MODULE, sizeof(*chip), &card);
+	if (err < 0) {
 		dev_err(child, "Failed to create card");
-		return PTR_ERR(card);
+		return err;
 	}
 
-	snd_card_set_dev(card, child);
+	chip = card->private_data;
+	chip->card = card;
+	chip->dev = child;
+	mutex_init(&chip->audio_mutex);
+
+	chip->vchi_ctx = devres_find(device,
+				     bcm2835_devm_free_vchi_ctx, NULL, NULL);
+	if (!chip->vchi_ctx)
+		return -ENODEV;
+
 	strcpy(card->driver, audio_driver->driver.name);
 	strcpy(card->shortname, audio_driver->shortname);
 	strcpy(card->longname, audio_driver->longname);
 
-	err = snd_bcm2835_create(card, &chip);
-	if (err) {
-		dev_err(child, "Failed to create chip, error %d\n", err);
-		return err;
-	}
-
-	chip->dev = child;
-
 	err = audio_driver->newpcm(chip, audio_driver->shortname,
 		audio_driver->route,
 		numchans);
-- 
2.18.0


  parent reply index

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-04 15:58 [PATCH 00/29] staging: bcm2835-audio: Cleanups and fixes Takashi Iwai
2018-09-04 15:58 ` [PATCH 01/29] staging: bcm2835-audio: Clean up mutex locks Takashi Iwai
2018-09-04 15:58 ` [PATCH 02/29] staging: bcm2835-audio: Remove redundant spdif stream ctls Takashi Iwai
2018-09-04 15:58 ` [PATCH 03/29] staging: bcm2835-audio: Clean up include files in bcm2835-ctl.c Takashi Iwai
2018-09-08 13:25   ` Stefan Wahren
2018-09-08 16:21     ` Takashi Iwai
2018-09-04 15:58 ` [PATCH 04/29] staging: bcm2835-audio: Remove redundant substream mask checks Takashi Iwai
2018-09-04 15:58 ` [PATCH 05/29] staging: bcm2835-audio: Fix mute controls, volume handling cleanup Takashi Iwai
2018-09-04 15:58 ` [PATCH 06/29] staging: bcm2835-audio: Remove redundant function calls Takashi Iwai
2018-09-04 15:58 ` [PATCH 07/29] staging: bcm2835-audio: Remove superfluous open flag Takashi Iwai
2018-09-04 15:58 ` [PATCH 08/29] staging: bcm2835-audio: Drop useless running flag and check Takashi Iwai
2018-09-04 15:58 ` [PATCH 09/29] staging: bcm2835-audio: Fix incorrect draining handling Takashi Iwai
2018-09-04 15:58 ` [PATCH 10/29] staging: bcm2835-audio: Kill unused spinlock Takashi Iwai
2018-09-04 15:58 ` [PATCH 11/29] staging: bcm2835-audio: Use PCM runtime values instead Takashi Iwai
2018-09-04 15:58 ` [PATCH 12/29] staging: bcm2835-audio: Drop unnecessary pcm indirect setup Takashi Iwai
2018-09-04 15:58 ` [PATCH 13/29] staging: bcm2835-audio: Drop useless NULL check Takashi Iwai
2018-09-04 15:58 ` [PATCH 14/29] staging: bcm2835-audio: Propagate parameter setup error Takashi Iwai
2018-09-04 15:58 ` [PATCH 15/29] staging: bcm2835-audio: Drop debug messages in bcm2835-pcm.c Takashi Iwai
2018-09-04 15:58 ` [PATCH 16/29] staging: bcm2835-audio: Drop superfluous mutex lock during prepare Takashi Iwai
2018-09-08 13:40   ` Stefan Wahren
2018-09-08 16:12     ` Takashi Iwai
2018-09-04 15:58 ` [PATCH 17/29] staging: bcm2835-audio: Add 10ms period constraint Takashi Iwai
2018-09-19  9:42   ` Stefan Wahren
2018-09-19  9:52     ` Takashi Iwai
2018-09-19 12:41       ` Stefan Wahren
2018-09-19 12:47         ` Mike Brady
2018-09-19 18:39         ` Takashi Iwai
2018-10-09 13:18           ` [PATCH 17/29] staging: bcm2835-audio: Add 10ms period constraint [Resend in plain text...] Mike Brady
2018-10-09 13:44             ` Takashi Iwai
2018-10-09 15:28               ` Mike Brady
2018-10-09 15:32                 ` Takashi Iwai
2018-10-11 12:53                 ` Mike Brady
2018-10-11 14:07                   ` Stefan Wahren
2018-10-13 15:00                   ` Mike Brady
2018-10-13 15:45                     ` Takashi Iwai
2018-09-04 15:58 ` [PATCH 18/29] staging: bcm2835-audio: Make single vchi handle Takashi Iwai
2018-09-04 15:58 ` [PATCH 19/29] staging: bcm2835-audio: Code refactoring of vchiq accessor codes Takashi Iwai
2018-09-04 15:58 ` [PATCH 20/29] staging: bcm2835-audio: Operate non-atomic PCM ops Takashi Iwai
2018-09-04 15:58 ` Takashi Iwai [this message]
2018-09-04 15:58 ` [PATCH 22/29] staging: bcm2835-audio: Use standard error print helpers Takashi Iwai
2018-09-04 15:58 ` [PATCH 23/29] staging: bcm2835-audio: Remove unnecessary header file includes Takashi Iwai
2018-09-04 15:58 ` [PATCH 24/29] staging: bcm2835-audio: Move module parameter description Takashi Iwai
2018-09-04 15:58 ` [PATCH 25/29] staging: bcm2835-audio: Use coherent device buffers Takashi Iwai
2018-09-04 15:58 ` [PATCH 26/29] staging: bcm2835-audio: Set SNDRV_PCM_INFO_SYNC_APPLPTR Takashi Iwai
2018-09-04 15:58 ` [PATCH 27/29] staging: bcm2835-audio: Simplify PCM creation helpers Takashi Iwai
2018-09-04 15:58 ` [PATCH 28/29] staging: bcm2835-audio: Simplify kctl " Takashi Iwai
2018-09-04 15:58 ` [PATCH 29/29] staging: bcm2835-audio: Simplify card object management Takashi Iwai
2018-09-08 13:18 ` [PATCH 00/29] staging: bcm2835-audio: Cleanups and fixes Stefan Wahren
2018-09-08 16:21   ` Takashi Iwai
2018-09-08 17:00     ` Stefan Wahren
2018-09-08 17:16       ` Takashi Iwai
2018-09-10  9:12     ` Greg Kroah-Hartman
2018-09-10  9:16       ` Takashi Iwai

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