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Diffstat (limited to 'sound/soc/samsung/idma.c')
-rw-r--r--sound/soc/samsung/idma.c126
1 files changed, 52 insertions, 74 deletions
diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c
index ce1e1e16f250..402ccadad46c 100644
--- a/sound/soc/samsung/idma.c
+++ b/sound/soc/samsung/idma.c
@@ -1,16 +1,10 @@
-/*
- * sound/soc/samsung/idma.c
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * I2S0's Internal DMA driver
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
+// SPDX-License-Identifier: GPL-2.0+
+//
+// idma.c - I2S0 internal DMA driver
+//
+// Copyright (c) 2011 Samsung Electronics Co., Ltd.
+// http://www.samsung.com
+
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
@@ -22,7 +16,6 @@
#include "i2s.h"
#include "idma.h"
-#include "dma.h"
#include "i2s-regs.h"
#define ST_RUNNING (1<<0)
@@ -35,14 +28,6 @@ static const struct snd_pcm_hardware idma_hardware = {
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME,
- .formats = SNDRV_PCM_FMTBIT_S16_LE |
- SNDRV_PCM_FMTBIT_U16_LE |
- SNDRV_PCM_FMTBIT_S24_LE |
- SNDRV_PCM_FMTBIT_U24_LE |
- SNDRV_PCM_FMTBIT_U8 |
- SNDRV_PCM_FMTBIT_S8,
- .channels_min = 2,
- .channels_max = 2,
.buffer_bytes_max = MAX_IDMA_BUFFER,
.period_bytes_min = 128,
.period_bytes_max = MAX_IDMA_PERIOD,
@@ -152,8 +137,9 @@ static void idma_done(void *id, int bytes_xfer)
snd_pcm_period_elapsed(substream);
}
-static int idma_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+static int idma_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct idma_ctrl *prtd = substream->runtime->private_data;
@@ -178,14 +164,16 @@ static int idma_hw_params(struct snd_pcm_substream *substream,
return 0;
}
-static int idma_hw_free(struct snd_pcm_substream *substream)
+static int idma_hw_free(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
snd_pcm_set_runtime_buffer(substream, NULL);
return 0;
}
-static int idma_prepare(struct snd_pcm_substream *substream)
+static int idma_prepare(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct idma_ctrl *prtd = substream->runtime->private_data;
@@ -198,7 +186,8 @@ static int idma_prepare(struct snd_pcm_substream *substream)
return 0;
}
-static int idma_trigger(struct snd_pcm_substream *substream, int cmd)
+static int idma_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
{
struct idma_ctrl *prtd = substream->runtime->private_data;
int ret = 0;
@@ -231,7 +220,8 @@ static int idma_trigger(struct snd_pcm_substream *substream, int cmd)
}
static snd_pcm_uframes_t
- idma_pointer(struct snd_pcm_substream *substream)
+idma_pointer(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct idma_ctrl *prtd = runtime->private_data;
@@ -248,31 +238,28 @@ static snd_pcm_uframes_t
return bytes_to_frames(substream->runtime, res);
}
-static int idma_mmap(struct snd_pcm_substream *substream,
+static int idma_mmap(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
struct vm_area_struct *vma)
{
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long size, offset;
- int ret;
/* From snd_pcm_lib_mmap_iomem */
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
size = vma->vm_end - vma->vm_start;
offset = vma->vm_pgoff << PAGE_SHIFT;
- ret = io_remap_pfn_range(vma, vma->vm_start,
+ return io_remap_pfn_range(vma, vma->vm_start,
(runtime->dma_addr + offset) >> PAGE_SHIFT,
size, vma->vm_page_prot);
-
- return ret;
}
static irqreturn_t iis_irq(int irqno, void *dev_id)
{
struct idma_ctrl *prtd = (struct idma_ctrl *)dev_id;
- u32 iiscon, iisahb, val, addr;
+ u32 iisahb, val, addr;
iisahb = readl(idma.regs + I2SAHB);
- iiscon = readl(idma.regs + I2SCON);
val = (iisahb & AHB_LVL0INT) ? AHB_CLRLVL0INT : 0;
@@ -282,7 +269,7 @@ static irqreturn_t iis_irq(int irqno, void *dev_id)
addr = readl(idma.regs + I2SLVL0ADDR) - idma.lp_tx_addr;
addr += prtd->periodsz;
- addr %= (prtd->end - prtd->start);
+ addr %= (u32)(prtd->end - prtd->start);
addr += idma.lp_tx_addr;
writel(addr, idma.regs + I2SLVL0ADDR);
@@ -294,7 +281,8 @@ static irqreturn_t iis_irq(int irqno, void *dev_id)
return IRQ_HANDLED;
}
-static int idma_open(struct snd_pcm_substream *substream)
+static int idma_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct idma_ctrl *prtd;
@@ -320,7 +308,8 @@ static int idma_open(struct snd_pcm_substream *substream)
return 0;
}
-static int idma_close(struct snd_pcm_substream *substream)
+static int idma_close(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct idma_ctrl *prtd = runtime->private_data;
@@ -335,19 +324,8 @@ static int idma_close(struct snd_pcm_substream *substream)
return 0;
}
-static struct snd_pcm_ops idma_ops = {
- .open = idma_open,
- .close = idma_close,
- .ioctl = snd_pcm_lib_ioctl,
- .trigger = idma_trigger,
- .pointer = idma_pointer,
- .mmap = idma_mmap,
- .hw_params = idma_hw_params,
- .hw_free = idma_hw_free,
- .prepare = idma_prepare,
-};
-
-static void idma_free(struct snd_pcm *pcm)
+static void idma_free(struct snd_soc_component *component,
+ struct snd_pcm *pcm)
{
struct snd_pcm_substream *substream;
struct snd_dma_buffer *buf;
@@ -360,7 +338,7 @@ static void idma_free(struct snd_pcm *pcm)
if (!buf->area)
return;
- iounmap(buf->area);
+ iounmap((void __iomem *)buf->area);
buf->area = NULL;
buf->addr = 0;
@@ -378,23 +356,23 @@ static int preallocate_idma_buffer(struct snd_pcm *pcm, int stream)
buf->dev.type = SNDRV_DMA_TYPE_CONTINUOUS;
buf->addr = idma.lp_tx_addr;
buf->bytes = idma_hardware.buffer_bytes_max;
- buf->area = (unsigned char *)ioremap(buf->addr, buf->bytes);
+ buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes);
+ if (!buf->area)
+ return -ENOMEM;
return 0;
}
-static u64 idma_mask = DMA_BIT_MASK(32);
-
-static int idma_new(struct snd_soc_pcm_runtime *rtd)
+static int idma_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
{
struct snd_card *card = rtd->card->snd_card;
struct snd_pcm *pcm = rtd->pcm;
- int ret = 0;
+ int ret;
- if (!card->dev->dma_mask)
- card->dev->dma_mask = &idma_mask;
- if (!card->dev->coherent_dma_mask)
- card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+ ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ return ret;
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
ret = preallocate_idma_buffer(pcm,
@@ -412,10 +390,17 @@ void idma_reg_addr_init(void __iomem *regs, dma_addr_t addr)
}
EXPORT_SYMBOL_GPL(idma_reg_addr_init);
-static struct snd_soc_platform_driver asoc_idma_platform = {
- .ops = &idma_ops,
- .pcm_new = idma_new,
- .pcm_free = idma_free,
+static const struct snd_soc_component_driver asoc_idma_platform = {
+ .open = idma_open,
+ .close = idma_close,
+ .trigger = idma_trigger,
+ .pointer = idma_pointer,
+ .mmap = idma_mmap,
+ .hw_params = idma_hw_params,
+ .hw_free = idma_hw_free,
+ .prepare = idma_prepare,
+ .pcm_construct = idma_new,
+ .pcm_destruct = idma_free,
};
static int asoc_idma_platform_probe(struct platform_device *pdev)
@@ -424,23 +409,16 @@ static int asoc_idma_platform_probe(struct platform_device *pdev)
if (idma_irq < 0)
return idma_irq;
- return snd_soc_register_platform(&pdev->dev, &asoc_idma_platform);
-}
-
-static int asoc_idma_platform_remove(struct platform_device *pdev)
-{
- snd_soc_unregister_platform(&pdev->dev);
- return 0;
+ return devm_snd_soc_register_component(&pdev->dev, &asoc_idma_platform,
+ NULL, 0);
}
static struct platform_driver asoc_idma_driver = {
.driver = {
.name = "samsung-idma",
- .owner = THIS_MODULE,
},
.probe = asoc_idma_platform_probe,
- .remove = asoc_idma_platform_remove,
};
module_platform_driver(asoc_idma_driver);
generated by cgit (git 2.34.1) at 2025-12-26 06:49:28 +0000