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-rw-r--r--sound/soc/codecs/wcd938x-sdw.c320
1 files changed, 320 insertions, 0 deletions
diff --git a/sound/soc/codecs/wcd938x-sdw.c b/sound/soc/codecs/wcd938x-sdw.c
new file mode 100644
index 000000000000..1fa05ec7459a
--- /dev/null
+++ b/sound/soc/codecs/wcd938x-sdw.c
@@ -0,0 +1,320 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2021, Linaro Limited
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/component.h>
+#include <linux/pm_runtime.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include "wcd938x.h"
+
+#define SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(m) (0xE0 + 0x10 * (m))
+
+static struct wcd938x_sdw_ch_info wcd938x_sdw_rx_ch_info[] = {
+ WCD_SDW_CH(WCD938X_HPH_L, WCD938X_HPH_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_HPH_R, WCD938X_HPH_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_CLSH, WCD938X_CLSH_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_COMP_L, WCD938X_COMP_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_COMP_R, WCD938X_COMP_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_LO, WCD938X_LO_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_DSD_L, WCD938X_DSD_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_DSD_R, WCD938X_DSD_PORT, BIT(1)),
+};
+
+static struct wcd938x_sdw_ch_info wcd938x_sdw_tx_ch_info[] = {
+ WCD_SDW_CH(WCD938X_ADC1, WCD938X_ADC_1_2_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_ADC2, WCD938X_ADC_1_2_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_ADC3, WCD938X_ADC_3_4_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_ADC4, WCD938X_ADC_3_4_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_DMIC0, WCD938X_DMIC_0_3_MBHC_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_DMIC1, WCD938X_DMIC_0_3_MBHC_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_MBHC, WCD938X_DMIC_0_3_MBHC_PORT, BIT(2)),
+ WCD_SDW_CH(WCD938X_DMIC2, WCD938X_DMIC_0_3_MBHC_PORT, BIT(2)),
+ WCD_SDW_CH(WCD938X_DMIC3, WCD938X_DMIC_0_3_MBHC_PORT, BIT(3)),
+ WCD_SDW_CH(WCD938X_DMIC4, WCD938X_DMIC_4_7_PORT, BIT(0)),
+ WCD_SDW_CH(WCD938X_DMIC5, WCD938X_DMIC_4_7_PORT, BIT(1)),
+ WCD_SDW_CH(WCD938X_DMIC6, WCD938X_DMIC_4_7_PORT, BIT(2)),
+ WCD_SDW_CH(WCD938X_DMIC7, WCD938X_DMIC_4_7_PORT, BIT(3)),
+};
+
+static struct sdw_dpn_prop wcd938x_dpn_prop[WCD938X_MAX_SWR_PORTS] = {
+ {
+ .num = 1,
+ .type = SDW_DPN_SIMPLE,
+ .min_ch = 1,
+ .max_ch = 8,
+ .simple_ch_prep_sm = true,
+ }, {
+ .num = 2,
+ .type = SDW_DPN_SIMPLE,
+ .min_ch = 1,
+ .max_ch = 4,
+ .simple_ch_prep_sm = true,
+ }, {
+ .num = 3,
+ .type = SDW_DPN_SIMPLE,
+ .min_ch = 1,
+ .max_ch = 4,
+ .simple_ch_prep_sm = true,
+ }, {
+ .num = 4,
+ .type = SDW_DPN_SIMPLE,
+ .min_ch = 1,
+ .max_ch = 4,
+ .simple_ch_prep_sm = true,
+ }, {
+ .num = 5,
+ .type = SDW_DPN_SIMPLE,
+ .min_ch = 1,
+ .max_ch = 4,
+ .simple_ch_prep_sm = true,
+ }
+};
+
+struct device *wcd938x_sdw_device_get(struct device_node *np)
+{
+ return bus_find_device_by_of_node(&sdw_bus_type, np);
+
+}
+EXPORT_SYMBOL_GPL(wcd938x_sdw_device_get);
+
+int wcd938x_swr_get_current_bank(struct sdw_slave *sdev)
+{
+ int bank;
+
+ bank = sdw_read(sdev, SDW_SCP_CTRL);
+
+ return ((bank & 0x40) ? 1 : 0);
+}
+EXPORT_SYMBOL_GPL(wcd938x_swr_get_current_bank);
+
+int wcd938x_sdw_hw_params(struct wcd938x_sdw_priv *wcd,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct sdw_port_config port_config[WCD938X_MAX_SWR_PORTS];
+ unsigned long ch_mask;
+ int i, j;
+
+ wcd->sconfig.ch_count = 1;
+ wcd->active_ports = 0;
+ for (i = 0; i < WCD938X_MAX_SWR_PORTS; i++) {
+ ch_mask = wcd->port_config[i].ch_mask;
+
+ if (!ch_mask)
+ continue;
+
+ for_each_set_bit(j, &ch_mask, 4)
+ wcd->sconfig.ch_count++;
+
+ port_config[wcd->active_ports] = wcd->port_config[i];
+ wcd->active_ports++;
+ }
+
+ wcd->sconfig.bps = 1;
+ wcd->sconfig.frame_rate = params_rate(params);
+ if (wcd->is_tx)
+ wcd->sconfig.direction = SDW_DATA_DIR_TX;
+ else
+ wcd->sconfig.direction = SDW_DATA_DIR_RX;
+
+ wcd->sconfig.type = SDW_STREAM_PCM;
+
+ return sdw_stream_add_slave(wcd->sdev, &wcd->sconfig,
+ &port_config[0], wcd->active_ports,
+ wcd->sruntime);
+}
+EXPORT_SYMBOL_GPL(wcd938x_sdw_hw_params);
+
+int wcd938x_sdw_free(struct wcd938x_sdw_priv *wcd,
+ struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ sdw_stream_remove_slave(wcd->sdev, wcd->sruntime);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wcd938x_sdw_free);
+
+int wcd938x_sdw_set_sdw_stream(struct wcd938x_sdw_priv *wcd,
+ struct snd_soc_dai *dai,
+ void *stream, int direction)
+{
+ wcd->sruntime = stream;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wcd938x_sdw_set_sdw_stream);
+
+static int wcd9380_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ return 0;
+}
+
+static int wcd9380_bus_config(struct sdw_slave *slave,
+ struct sdw_bus_params *params)
+{
+ sdw_write(slave, SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(params->next_bank), 0x01);
+
+ return 0;
+}
+
+static int wcd9380_interrupt_callback(struct sdw_slave *slave,
+ struct sdw_slave_intr_status *status)
+{
+ struct wcd938x_sdw_priv *wcd = dev_get_drvdata(&slave->dev);
+ struct irq_domain *slave_irq = wcd->slave_irq;
+ struct regmap *regmap = dev_get_regmap(&slave->dev, NULL);
+ u32 sts1, sts2, sts3;
+
+ do {
+ handle_nested_irq(irq_find_mapping(slave_irq, 0));
+ regmap_read(regmap, WCD938X_DIGITAL_INTR_STATUS_0, &sts1);
+ regmap_read(regmap, WCD938X_DIGITAL_INTR_STATUS_1, &sts2);
+ regmap_read(regmap, WCD938X_DIGITAL_INTR_STATUS_2, &sts3);
+
+ } while (sts1 || sts2 || sts3);
+
+ return IRQ_HANDLED;
+}
+
+static struct sdw_slave_ops wcd9380_slave_ops = {
+ .update_status = wcd9380_update_status,
+ .interrupt_callback = wcd9380_interrupt_callback,
+ .bus_config = wcd9380_bus_config,
+};
+
+static int wcd938x_sdw_component_bind(struct device *dev,
+ struct device *master, void *data)
+{
+ return 0;
+}
+
+static void wcd938x_sdw_component_unbind(struct device *dev,
+ struct device *master, void *data)
+{
+}
+
+static const struct component_ops wcd938x_sdw_component_ops = {
+ .bind = wcd938x_sdw_component_bind,
+ .unbind = wcd938x_sdw_component_unbind,
+};
+
+static int wcd9380_probe(struct sdw_slave *pdev,
+ const struct sdw_device_id *id)
+{
+ struct device *dev = &pdev->dev;
+ struct wcd938x_sdw_priv *wcd;
+ int ret;
+
+ wcd = devm_kzalloc(dev, sizeof(*wcd), GFP_KERNEL);
+ if (!wcd)
+ return -ENOMEM;
+
+ /**
+ * Port map index starts with 0, however the data port for this codec
+ * are from index 1
+ */
+ if (of_property_read_bool(dev->of_node, "qcom,tx-port-mapping")) {
+ wcd->is_tx = true;
+ ret = of_property_read_u32_array(dev->of_node, "qcom,tx-port-mapping",
+ &pdev->m_port_map[1],
+ WCD938X_MAX_TX_SWR_PORTS);
+ } else {
+ ret = of_property_read_u32_array(dev->of_node, "qcom,rx-port-mapping",
+ &pdev->m_port_map[1],
+ WCD938X_MAX_SWR_PORTS);
+ }
+
+ if (ret < 0)
+ dev_info(dev, "Static Port mapping not specified\n");
+
+ wcd->sdev = pdev;
+ dev_set_drvdata(dev, wcd);
+
+ pdev->prop.scp_int1_mask = SDW_SCP_INT1_IMPL_DEF |
+ SDW_SCP_INT1_BUS_CLASH |
+ SDW_SCP_INT1_PARITY;
+ pdev->prop.lane_control_support = true;
+ if (wcd->is_tx) {
+ pdev->prop.source_ports = GENMASK(WCD938X_MAX_SWR_PORTS, 0);
+ pdev->prop.src_dpn_prop = wcd938x_dpn_prop;
+ wcd->ch_info = &wcd938x_sdw_tx_ch_info[0];
+ pdev->prop.wake_capable = true;
+ } else {
+ pdev->prop.sink_ports = GENMASK(WCD938X_MAX_SWR_PORTS, 0);
+ pdev->prop.sink_dpn_prop = wcd938x_dpn_prop;
+ wcd->ch_info = &wcd938x_sdw_rx_ch_info[0];
+ }
+
+ pm_runtime_set_autosuspend_delay(dev, 3000);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ return component_add(dev, &wcd938x_sdw_component_ops);
+}
+
+static const struct sdw_device_id wcd9380_slave_id[] = {
+ SDW_SLAVE_ENTRY(0x0217, 0x10d, 0),
+ {},
+};
+MODULE_DEVICE_TABLE(sdw, wcd9380_slave_id);
+
+static int __maybe_unused wcd938x_sdw_runtime_suspend(struct device *dev)
+{
+ struct regmap *regmap = dev_get_regmap(dev, NULL);
+
+ if (regmap) {
+ regcache_cache_only(regmap, true);
+ regcache_mark_dirty(regmap);
+ }
+ return 0;
+}
+
+static int __maybe_unused wcd938x_sdw_runtime_resume(struct device *dev)
+{
+ struct regmap *regmap = dev_get_regmap(dev, NULL);
+
+ if (regmap) {
+ regcache_cache_only(regmap, false);
+ regcache_sync(regmap);
+ }
+
+ pm_runtime_mark_last_busy(dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops wcd938x_sdw_pm_ops = {
+ SET_RUNTIME_PM_OPS(wcd938x_sdw_runtime_suspend, wcd938x_sdw_runtime_resume, NULL)
+};
+
+
+static struct sdw_driver wcd9380_codec_driver = {
+ .probe = wcd9380_probe,
+ .ops = &wcd9380_slave_ops,
+ .id_table = wcd9380_slave_id,
+ .driver = {
+ .name = "wcd9380-codec",
+ .pm = &wcd938x_sdw_pm_ops,
+ }
+};
+module_sdw_driver(wcd9380_codec_driver);
+
+MODULE_DESCRIPTION("WCD938X SDW codec driver");
+MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.