From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/sound/spi/at73c213.c | 50 +++++++++++++++++++++++++++-----------------------
1 files changed, 27 insertions(+), 23 deletions(-)
diff --git a/kernel/sound/spi/at73c213.c b/kernel/sound/spi/at73c213.c
index 1ef52ed..8a2da6b 100644
--- a/kernel/sound/spi/at73c213.c
+++ b/kernel/sound/spi/at73c213.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
*
* Copyright (C) 2006-2007 Atmel Norway
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
*/
/*#define DEBUG*/
@@ -39,7 +36,7 @@
#define BITRATE_MAX 50000 /* Hardware limit. */
/* Initial (hardware reset) AT73C213 register values. */
-static u8 snd_at73c213_original_image[18] =
+static const u8 snd_at73c213_original_image[18] =
{
0x00, /* 00 - CTRL */
0x05, /* 01 - LLIG */
@@ -221,7 +218,9 @@
runtime->hw = snd_at73c213_playback_hw;
chip->substream = substream;
- clk_enable(chip->ssc->clk);
+ err = clk_enable(chip->ssc->clk);
+ if (err)
+ return err;
return 0;
}
@@ -245,13 +244,7 @@
val = SSC_BFINS(TFMR_DATNB, channels - 1, val);
ssc_writel(chip->ssc->regs, TFMR, val);
- return snd_pcm_lib_malloc_pages(substream,
- params_buffer_bytes(hw_params));
-}
-
-static int snd_at73c213_pcm_hw_free(struct snd_pcm_substream *substream)
-{
- return snd_pcm_lib_free_pages(substream);
+ return 0;
}
static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream)
@@ -325,9 +318,7 @@
static const struct snd_pcm_ops at73c213_playback_ops = {
.open = snd_at73c213_pcm_open,
.close = snd_at73c213_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_at73c213_pcm_hw_params,
- .hw_free = snd_at73c213_pcm_hw_free,
.prepare = snd_at73c213_pcm_prepare,
.trigger = snd_at73c213_pcm_trigger,
.pointer = snd_at73c213_pcm_pointer,
@@ -350,7 +341,7 @@
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &at73c213_playback_ops);
- retval = snd_pcm_lib_preallocate_pages_for_all(chip->pcm,
+ snd_pcm_set_managed_buffer_all(chip->pcm,
SNDRV_DMA_TYPE_DEV, &chip->ssc->pdev->dev,
64 * 1024, 64 * 1024);
out:
@@ -668,7 +659,7 @@
| (mask << 24) | (invert << 22)) \
}
-static struct snd_kcontrol_new snd_at73c213_controls[] = {
+static const struct snd_kcontrol_new snd_at73c213_controls[] = {
AT73C213_STEREO("Master Playback Volume", 0, DAC_LMPG, DAC_RMPG, 0, 0, 0x1f, 1),
AT73C213_STEREO("Master Playback Switch", 0, DAC_LMPG, DAC_RMPG, 5, 5, 1, 1),
AT73C213_STEREO("PCM Playback Volume", 0, DAC_LLOG, DAC_RLOG, 0, 0, 0x1f, 1),
@@ -787,7 +778,9 @@
goto out;
/* Enable DAC master clock. */
- clk_enable(chip->board->dac_clk);
+ retval = clk_enable(chip->board->dac_clk);
+ if (retval)
+ goto out;
/* Initialize at73c213 on SPI bus. */
retval = snd_at73c213_write_reg(chip, DAC_RST, 0x04);
@@ -885,7 +878,7 @@
static int snd_at73c213_dev_init(struct snd_card *card,
struct spi_device *spi)
{
- static struct snd_device_ops ops = {
+ static const struct snd_device_ops ops = {
.dev_free = snd_at73c213_dev_free,
};
struct snd_at73c213 *chip = get_chip(card);
@@ -900,7 +893,9 @@
chip->card = card;
chip->irq = -1;
- clk_enable(chip->ssc->clk);
+ retval = clk_enable(chip->ssc->clk);
+ if (retval)
+ return retval;
retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip);
if (retval) {
@@ -1019,7 +1014,9 @@
int retval;
/* Stop playback. */
- clk_enable(chip->ssc->clk);
+ retval = clk_enable(chip->ssc->clk);
+ if (retval)
+ goto out;
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS));
clk_disable(chip->ssc->clk);
@@ -1099,9 +1096,16 @@
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_at73c213 *chip = card->private_data;
+ int retval;
- clk_enable(chip->board->dac_clk);
- clk_enable(chip->ssc->clk);
+ retval = clk_enable(chip->board->dac_clk);
+ if (retval)
+ return retval;
+ retval = clk_enable(chip->ssc->clk);
+ if (retval) {
+ clk_disable(chip->board->dac_clk);
+ return retval;
+ }
ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN));
return 0;
--
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