linux-kernel - [PATCH v2 1/3] ASoC: dwc: I2S Controller instance param added

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Date:   Wed, 18 Apr 2018 16:34:52 +0530
From:   Vijendar Mukunda <Vijendar.Mukunda@....com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Alex Deucher <alexander.deucher@....com>,
        Akshu Agrawal <akshu.agrawal@....com>,
        "Jose Abreu" <Jose.Abreu@...opsys.com>,
        Markus Elfring <elfring@...rs.sourceforge.net>,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>,
        "moderated list:SOUND" <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/3] ASoC: dwc: I2S Controller instance param added

When multiple I2S controller instances created,
i2s_instance parameter refers to i2s controller instance value.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@....com>
---
 v1->v2: removed acp dma driver specific macros from dwc header file
 include/sound/designware_i2s.h | 4 ++++
 sound/soc/dwc/dwc-i2s.c        | 1 +
 sound/soc/dwc/local.h          | 1 +
 3 files changed, 6 insertions(+)

diff --git a/include/sound/designware_i2s.h b/include/sound/designware_i2s.h
index 830f5ca..2a94e7c 100644
--- a/include/sound/designware_i2s.h
+++ b/include/sound/designware_i2s.h
@@ -44,6 +44,10 @@ struct i2s_platform_data {
 	int channel;
 	u32 snd_fmts;
 	u32 snd_rates;
+	/* i2s_instance parameter returns I2S controller instance value
+	 * when multiple I2S controllers instantiated
+	 */
+	u32 i2s_instance;
 
 	#define DW_I2S_QUIRK_COMP_REG_OFFSET	(1 << 0)
 	#define DW_I2S_QUIRK_COMP_PARAM1	(1 << 1)
diff --git a/sound/soc/dwc/dwc-i2s.c b/sound/soc/dwc/dwc-i2s.c
index 65112b9..58f81a4 100644
--- a/sound/soc/dwc/dwc-i2s.c
+++ b/sound/soc/dwc/dwc-i2s.c
@@ -553,6 +553,7 @@ static int dw_configure_dai_by_pd(struct dw_i2s_dev *dev,
 
 	if (dev->quirks & DW_I2S_QUIRK_16BIT_IDX_OVERRIDE)
 		idx = 1;
+	dev->i2s_instance = pdata->i2s_instance;
 	/* Set DMA slaves info */
 	dev->play_dma_data.pd.data = pdata->play_dma_data;
 	dev->capture_dma_data.pd.data = pdata->capture_dma_data;
diff --git a/sound/soc/dwc/local.h b/sound/soc/dwc/local.h
index 91dc70a..e89e464 100644
--- a/sound/soc/dwc/local.h
+++ b/sound/soc/dwc/local.h
@@ -98,6 +98,7 @@ struct dw_i2s_dev {
 	u32 ccr;
 	u32 xfer_resolution;
 	u32 fifo_th;
+	u32 i2s_instance;
 
 	/* data related to DMA transfers b/w i2s and DMAC */
 	union dw_i2s_snd_dma_data play_dma_data;
-- 
2.7.4