Re: [PATCH v2 4/7] ASoC: mediatek: mt7986: add platform driver
From: AngeloGioacchino Del Regno
Date: Tue Jul 04 2023 - 05:13:30 EST
Il 26/06/23 04:34, Maso Huang ha scritto:
Add mt7986 platform driver.
Signed-off-by: Maso Huang <maso.huang@xxxxxxxxxxxx>
---
sound/soc/mediatek/Kconfig | 10 +
sound/soc/mediatek/Makefile | 1 +
sound/soc/mediatek/mt7986/Makefile | 9 +
sound/soc/mediatek/mt7986/mt7986-afe-pcm.c | 598 +++++++++++++++++++++
4 files changed, 618 insertions(+)
create mode 100644 sound/soc/mediatek/mt7986/Makefile
create mode 100644 sound/soc/mediatek/mt7986/mt7986-afe-pcm.c
..snip..
diff --git a/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c b/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c
new file mode 100644
index 000000000000..9eef21762e93
--- /dev/null
+++ b/sound/soc/mediatek/mt7986/mt7986-afe-pcm.c
@@ -0,0 +1,598 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MediaTek ALSA SoC AFE platform driver for MT7986
+ *
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Vic Wu <vic.wu@xxxxxxxxxxxx>
+ * Maso Huang <maso.huang@xxxxxxxxxxxx>
+ */
+
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/pm_runtime.h>
+
+#include "mt7986-afe-common.h"
+#include "mt7986-afe-clk.h"
+#include "mt7986-reg.h"
+#include "../common/mtk-afe-platform-driver.h"
+#include "../common/mtk-afe-fe-dai.h"
+
+enum {
+ MTK_AFE_RATE_8K = 0,
+ MTK_AFE_RATE_11K = 1,
+ MTK_AFE_RATE_12K = 2,
+ MTK_AFE_RATE_16K = 4,
+ MTK_AFE_RATE_22K = 5,
+ MTK_AFE_RATE_24K = 6,
+ MTK_AFE_RATE_32K = 8,
+ MTK_AFE_RATE_44K = 9,
+ MTK_AFE_RATE_48K = 10,
+ MTK_AFE_RATE_88K = 13,
+ MTK_AFE_RATE_96K = 14,
+ MTK_AFE_RATE_176K = 17,
+ MTK_AFE_RATE_192K = 18,
+};
+
+unsigned int mt7986_afe_rate_transform(struct device *dev,
+ unsigned int rate)
Fits in one line.
+{
+ switch (rate) {
+ case 8000:
+ return MTK_AFE_RATE_8K;
+ case 11025:
+ return MTK_AFE_RATE_11K;
+ case 12000:
+ return MTK_AFE_RATE_12K;
+ case 16000:
+ return MTK_AFE_RATE_16K;
+ case 22050:
+ return MTK_AFE_RATE_22K;
+ case 24000:
+ return MTK_AFE_RATE_24K;
+ case 32000:
+ return MTK_AFE_RATE_32K;
+ case 44100:
+ return MTK_AFE_RATE_44K;
+ case 48000:
+ return MTK_AFE_RATE_48K;
+ case 88200:
+ return MTK_AFE_RATE_88K;
+ case 96000:
+ return MTK_AFE_RATE_96K;
+ case 176400:
+ return MTK_AFE_RATE_176K;
+ case 192000:
+ return MTK_AFE_RATE_192K;
+ default:
+ dev_warn(dev, "%s(), rate %u invalid, use %d!!!\n",
s/use/using/g
+ __func__, rate, MTK_AFE_RATE_48K);
+ return MTK_AFE_RATE_48K;
+ }
+}
+
..snip..
+
+static bool mt7986_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ /* these auto-gen reg has read-only bit, so put it as volatile */
+ /* volatile reg cannot be cached, so cannot be set when power off */
Fix the comment format please; for multi-line comments, you want:
/*
* Those auto-gen regs are read-only, so put it a volatile because
* volatile registers cannot be cached, which means that they cannot
* be set when power is off
*/
+ switch (reg) {
+ case AFE_DL0_CUR_MSB:
+ case AFE_DL0_CUR:
+ case AFE_DL0_RCH_MON:
+ case AFE_DL0_LCH_MON:
+ case AFE_VUL0_CUR_MSB:
+ case AFE_VUL0_CUR:
+ case AFE_IRQ_MCU_STATUS:
+ case AFE_MEMIF_RD_MON:
+ case AFE_MEMIF_WR_MON:
+ return true;
+ default:
+ return false;
+ };
+}
+
..snip..
+
+static int mt7986_afe_pcm_dev_probe(struct platform_device *pdev)
+{
+ struct mtk_base_afe *afe;
+ struct mt7986_afe_private *afe_priv;
+ struct device *dev;
+ int i, irq_id, ret;
+
+ afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
+ if (!afe)
+ return -ENOMEM;
+ platform_set_drvdata(pdev, afe);
+
+ afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv),
+ GFP_KERNEL);
+ if (!afe->platform_priv)
+ return -ENOMEM;
+
+ afe_priv = afe->platform_priv;
+ afe->dev = &pdev->dev;
+ dev = afe->dev;
+
+ afe->base_addr = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(afe->base_addr))
+ return PTR_ERR(afe->base_addr);
+
+ /* initial audio related clock */
+ ret = mt7986_init_clock(afe);
As said in the review for patch [2/7], function mt7986_init_clock() must be moved
in this file instead.
+ if (ret)
+ return dev_err_probe(dev, ret, "Cannot initialize clocks\n");
+
+ ret = devm_pm_runtime_enable(dev);
+ if (ret)
+ return ret;
+
+ /* enable clock for regcache get default value from hw */
+ afe_priv->pm_runtime_bypass_reg_ctl = true;
+ pm_runtime_get_sync(&pdev->dev);
+
+ afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr,
+ &mt7986_afe_regmap_config);
pm_runtime_put_sync(&pdev->dev);
if (IS_ERR(afe->regmap))
return PTR_ERR(afe->regmap);
afe_prov->pm_runtime_bypass_reg_ctl = false;
that's better :-)
+ if (IS_ERR(afe->regmap)) {
+ ret = PTR_ERR(afe->regmap);
+ goto err_pm_disable;
+ }
+
+ pm_runtime_put_sync(&pdev->dev);
+ afe_priv->pm_runtime_bypass_reg_ctl = false;
+
+ /* init memif */
+ afe->memif_size = MT7986_MEMIF_NUM;
+ afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif),
+ GFP_KERNEL);
+ if (!afe->memif)
+ goto err_pm_disable;
+
+ for (i = 0; i < afe->memif_size; i++) {
+ afe->memif[i].data = &memif_data[i];
+ afe->memif[i].irq_usage = -1;
+ }
+
+ mutex_init(&afe->irq_alloc_lock);
+
+ /* irq initialize */
+ afe->irqs_size = MT7986_IRQ_NUM;
+ afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs),
+ GFP_KERNEL);
+ if (!afe->irqs)
+ goto err_pm_disable;
+
+ for (i = 0; i < afe->irqs_size; i++)
+ afe->irqs[i].irq_data = &irq_data[i];
+
+ /* request irq */
+ irq_id = platform_get_irq(pdev, 0);
+ if (irq_id < 0) {
+ dev_err(dev, "%pOFn no irq found\n", dev->of_node);
+ ret = irq_id;
+ goto err_pm_disable;
You can just return... and please use dev_err_probe().
+ }
+ ret = devm_request_irq(dev, irq_id, mt7986_afe_irq_handler,
+ IRQF_TRIGGER_NONE, "asys-isr", (void *)afe);
+ if (ret) {
+ dev_err(dev, "could not request_irq for asys-isr\n");
+ goto err_pm_disable;
+ }
+
+ /* init sub_dais */
+ INIT_LIST_HEAD(&afe->sub_dais);
+
+ for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) {
+ ret = dai_register_cbs[i](afe);
+ if (ret) {
+ dev_err(afe->dev, "dai register i %d fail, ret %d\n",
+ i, ret);
+ goto err_pm_disable;
+ }
+ }
+
+ /* init dai_driver and component_driver */
+ ret = mtk_afe_combine_sub_dai(afe);
+ if (ret) {
+ dev_err(afe->dev, "mtk_afe_combine_sub_dai fail, ret %d\n",
+ ret);
+ goto err_pm_disable;
+ }
+
+ afe->mtk_afe_hardware = &mt7986_afe_hardware;
+ afe->memif_fs = mt7986_memif_fs;
+ afe->irq_fs = mt7986_irq_fs;
+
+ afe->runtime_resume = mt7986_afe_runtime_resume;
+ afe->runtime_suspend = mt7986_afe_runtime_suspend;
+
+ /* register component */
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &mt7986_afe_component,
+ NULL, 0);
+ if (ret) {
+ dev_warn(dev, "err_platform\n");
That shall not be a dev_warn, but a dev_err() instead, but then, being this
a probe function and not needing that jump, it's dev_err_probe().
+ goto err_pm_disable;
+ }
+
+ ret = devm_snd_soc_register_component(afe->dev,
+ &mt7986_afe_pcm_dai_component,
+ afe->dai_drivers,
+ afe->num_dai_drivers);
+ if (ret) {
+ dev_warn(dev, "err_dai_component\n");
Same here.
+ goto err_pm_disable;
+ }
+
+ return ret;
+
+err_pm_disable:
You don't need this label because you're now using devm_pm_runtime_enable() and,
following my advice from some lines up, pm_runtime_put_sync() is called at the
right time already.
This means that you can simplify this function a lot with directly returning the
error in error paths (including instances of dev_err_probe() ).
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ return ret;
+}
+
+static void mt7986_afe_pcm_dev_remove(struct platform_device *pdev)
+{
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ mt7986_afe_runtime_suspend(&pdev->dev);
+}
+
+static const struct of_device_id mt7986_afe_pcm_dt_match[] = {
+ { .compatible = "mediatek,mt7986-afe", },
You don't need the comma here ^^
so this is just
{ .compatible = "mediatek,mt7986-afe" },
Everything else looks fine.
Regards,
Angelo