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Date:   Sat, 23 Oct 2021 15:23:59 +0530
From:   Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org, lgirdwood@...il.com,
        broonie@...nel.org, robh+dt@...nel.org, plai@...eaurora.org,
        bgoswami@...eaurora.org, perex@...ex.cz, tiwai@...e.com,
        srinivas.kandagatla@...aro.org, rohitkr@...eaurora.org,
        linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        swboyd@...omium.org, judyhsiao@...omium.org
Cc:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        Venkata Prasad Potturu <potturu@...eaurora.org>
Subject: [PATCH v3 07/10] ASoC: qcom: Add regmap config support for codec dma driver

Update regmap configuration for supporting headset playback and
capture and DMIC capture using codec dma interface

Signed-off-by: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
Co-developed-by: Venkata Prasad Potturu <potturu@...eaurora.org>
Signed-off-by: Venkata Prasad Potturu <potturu@...eaurora.org>
---
 sound/soc/qcom/lpass-cpu.c | 185 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 185 insertions(+)

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 9e6656c..ea1542d 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -29,6 +29,8 @@
 #define LPASS_CPU_I2S_SD2_3_MASK	GENMASK(3, 2)
 #define LPASS_CPU_I2S_SD0_1_2_MASK	GENMASK(2, 0)
 #define LPASS_CPU_I2S_SD0_1_2_3_MASK	GENMASK(3, 0)
+#define LPASS_REG_READ 1
+#define LPASS_REG_WRITE 0
 
 /*
  * Channel maps for Quad channel playbacks on MI2S Secondary
@@ -799,6 +801,189 @@ static struct regmap_config lpass_hdmi_regmap_config = {
 	.cache_type = REGCACHE_FLAT,
 };
 
+static bool __lpass_rxtx_regmap_accessible(struct device *dev, unsigned int reg, bool rw)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	for (i = 0; i < v->rxtx_irq_ports; ++i) {
+		if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQEN_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+	}
+
+	for (i = 0; i < v->rxtx_rdma_channels; ++i) {
+		if (reg == LPAIF_CDC_RDMACTL_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_CDC_RDMABASE_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_CDC_RDMABUFF_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (rw == LPASS_REG_READ) {
+			if (reg == LPAIF_CDC_RDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+				return true;
+		}
+		if (reg == LPAIF_CDC_RDMAPER_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_CDC_RDMA_INTF_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+	}
+
+	for (i = 0; i < v->rxtx_wrdma_channels; ++i) {
+		if (reg == LPAIF_CDC_WRDMACTL_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+		if (reg == LPAIF_CDC_WRDMABASE_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+		if (reg == LPAIF_CDC_WRDMABUFF_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+		if (rw == LPASS_REG_READ) {
+			if (reg == LPAIF_CDC_WRDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+				return true;
+		}
+		if (reg == LPAIF_CDC_WRDMAPER_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+		if (reg == LPAIF_CDC_WRDMA_INTF_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+	}
+	return false;
+}
+
+static bool lpass_rxtx_regmap_writeable(struct device *dev, unsigned int reg)
+{
+	return __lpass_rxtx_regmap_accessible(dev, reg, LPASS_REG_WRITE);
+}
+
+static bool lpass_rxtx_regmap_readable(struct device *dev, unsigned int reg)
+{
+	return __lpass_rxtx_regmap_accessible(dev, reg, LPASS_REG_READ);
+}
+
+static bool lpass_rxtx_regmap_volatile(struct device *dev, unsigned int reg)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	for (i = 0; i < v->rxtx_irq_ports; ++i) {
+		if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+	}
+
+	for (i = 0; i < v->rxtx_rdma_channels; ++i)
+		if (reg == LPAIF_CDC_RDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+			return true;
+
+	for (i = 0; i < v->rxtx_wrdma_channels; ++i)
+		if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->rxtx_wrdma_channel_start,
+							LPASS_CDC_DMA_TX3))
+			return true;
+
+	return false;
+}
+
+static bool __lpass_va_regmap_accessible(struct device *dev, unsigned int reg, bool rw)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	for (i = 0; i < v->va_irq_ports; ++i) {
+		if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQEN_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+			return true;
+	}
+
+	for (i = 0; i < v->va_wrdma_channels; ++i) {
+		if (reg == LPAIF_CDC_WRDMACTL_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_CDC_WRDMABASE_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_CDC_WRDMABUFF_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (rw == LPASS_REG_READ) {
+			if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+				return true;
+		}
+		if (reg == LPAIF_CDC_WRDMAPER_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_CDC_WRDMA_INTF_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+	}
+	return false;
+}
+
+static bool lpass_va_regmap_writeable(struct device *dev, unsigned int reg)
+{
+	return __lpass_va_regmap_accessible(dev, reg, LPASS_REG_WRITE);
+}
+
+static bool lpass_va_regmap_readable(struct device *dev, unsigned int reg)
+{
+	return __lpass_va_regmap_accessible(dev, reg, LPASS_REG_READ);
+}
+
+static bool lpass_va_regmap_volatile(struct device *dev, unsigned int reg)
+{
+	struct lpass_data *drvdata = dev_get_drvdata(dev);
+	struct lpass_variant *v = drvdata->variant;
+	int i;
+
+	for (i = 0; i < v->va_irq_ports; ++i) {
+		if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+			return true;
+		if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+			return true;
+	}
+
+	for (i = 0; i < v->va_wrdma_channels; ++i) {
+		if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->va_wrdma_channel_start,
+							LPASS_CDC_DMA_VA_TX0))
+			return true;
+	}
+
+	return false;
+}
+
+static struct regmap_config lpass_rxtx_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.writeable_reg = lpass_rxtx_regmap_writeable,
+	.readable_reg = lpass_rxtx_regmap_readable,
+	.volatile_reg = lpass_rxtx_regmap_volatile,
+	.cache_type = REGCACHE_FLAT,
+};
+
+static struct regmap_config lpass_va_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.writeable_reg = lpass_va_regmap_writeable,
+	.readable_reg = lpass_va_regmap_readable,
+	.volatile_reg = lpass_va_regmap_volatile,
+	.cache_type = REGCACHE_FLAT,
+};
+
 static unsigned int of_lpass_cpu_parse_sd_lines(struct device *dev,
 						struct device_node *node,
 						const char *name)
-- 
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.

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