Add support for BTP API using Cadence and hda-sdw-bpt helpers.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
drivers/soundwire/intel_ace2x.c | 377 ++++++++++++++++++++++++++++++++
1 file changed, 377 insertions(+)
diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c
index fb64c6d37ab0..f2f5dd503572 100644
--- a/drivers/soundwire/intel_ace2x.c
+++ b/drivers/soundwire/intel_ace2x.c
@@ -12,12 +12,383 @@
#include <linux/soundwire/sdw_intel.h>
#include <sound/hdaudio.h>
#include <sound/hda-mlink.h>
+#include <sound/hda-sdw-bpt.h>
#include <sound/hda_register.h>
#include <sound/pcm_params.h>
#include "cadence_master.h"
#include "bus.h"
#include "intel.h"
+static int sdw_slave_bpt_stream_add(struct sdw_slave *slave,
+ struct sdw_stream_runtime *stream)
+{
+ struct sdw_stream_config sconfig = {0};
+ struct sdw_port_config pconfig = {0};
+ int ret;
+
+ /* arbitrary configuration */
+ sconfig.frame_rate = 16000;
+ sconfig.ch_count = 1;
+ sconfig.bps = 32; /* this is required for BPT/BRA */
+ sconfig.direction = SDW_DATA_DIR_RX;
+ sconfig.type = SDW_STREAM_BPT;
+
+ pconfig.num = 0;
+ pconfig.ch_mask = BIT(0);
+
+ ret = sdw_stream_add_slave(slave, &sconfig,
+ &pconfig, 1, stream);
+ if (ret) {
+ dev_err(&slave->dev, "%s: failed: %d\n", __func__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int intel_ace2x_bpt_open_stream(struct sdw_intel *sdw,
+ struct sdw_slave *slave,
+ enum sdw_bpt_type mode,
+ struct sdw_bpt_msg *msg)
+{
+ struct sdw_cdns *cdns = &sdw->cdns;
+ struct sdw_bus *bus = &cdns->bus;
+ struct sdw_master_prop *prop = &bus->prop;
+ struct sdw_stream_runtime *stream;
+ struct sdw_stream_config sconfig;
+ struct sdw_port_config *pconfig;
+ unsigned int pdi0_buffer_size;
+ unsigned int tx_dma_bandwidth;
+ unsigned int pdi1_buffer_size;
+ unsigned int rx_dma_bandwidth;
+ unsigned int num_frames;
+ unsigned int data_per_frame;
+ unsigned int tx_total_bytes;
+ struct sdw_cdns_pdi *pdi0;
+ struct sdw_cdns_pdi *pdi1;
+ const int ch = 1;
+ const int num_pdi = 2;
+ int command;
+ int ret1;
+ int ret;
+ int dir;
+ int i;
+
+ if (mode != SDW_BRA)
+ return -EINVAL;
+
+ stream = sdw_alloc_stream("BPT", SDW_STREAM_BPT);
+ if (!stream)
+ return -ENOMEM;
+ cdns->bus.bpt_stream = stream;
+
+ ret = sdw_slave_bpt_stream_add(slave, stream);
+ if (ret < 0)
+ goto release_stream;
+
+ /* handle PDI0 first */
+ dir = SDW_DATA_DIR_TX;
+
+ pdi0 = sdw_cdns_alloc_pdi(cdns, &cdns->pcm, ch, dir, 0);
+ if (!pdi0) {
+ dev_err(cdns->dev, "%s: sdw_cdns_alloc_pdi0 failed\n", __func__);
+ ret = -EINVAL;
+ goto remove_slave;
+ }
+
+ sdw_cdns_config_stream(cdns, ch, dir, pdi0);
+
+ /* handle PDI1 */
+ dir = SDW_DATA_DIR_RX;
+
+ pdi1 = sdw_cdns_alloc_pdi(cdns, &cdns->pcm, ch, dir, 1);
+ if (!pdi1) {
+ dev_err(cdns->dev, "%s: sdw_cdns_alloc_pdi1 failed\n", __func__);
+ ret = -EINVAL;
+ goto remove_slave;
+ }
+
+ sdw_cdns_config_stream(cdns, ch, dir, pdi1);
+
+ /*
+ * the port config direction, number of channels and frame
+ * rate is totally arbitrary
+ */
+ sconfig.direction = dir;
+ sconfig.ch_count = ch;
+ sconfig.frame_rate = 16000;
+ sconfig.type = SDW_STREAM_BPT;
+ sconfig.bps = 32; /* this is required for BPT/BRA */
+
+ /* Port configuration */
+ pconfig = kcalloc(num_pdi, sizeof(*pconfig), GFP_KERNEL);
+ if (!pconfig) {
+ ret = -ENOMEM;
+ goto remove_slave;
+ }
+
+ for (i = 0; i < num_pdi; i++) {
+ pconfig[i].num = i;
+ pconfig[i].ch_mask = ch;
+ }
+
+ ret = sdw_stream_add_master(&cdns->bus, &sconfig,
+ pconfig, num_pdi, stream);
+ kfree(pconfig);
+
+ if (ret < 0) {
+ dev_err(cdns->dev, "add master to stream failed:%d\n", ret);
+ goto remove_slave;
+ }
+
+ ret = sdw_prepare_stream(cdns->bus.bpt_stream);
+ if (ret < 0)
+ goto remove_master;
+
+ command = (msg->flags & SDW_MSG_FLAG_WRITE) ? 0 : 1;
+
+ ret = sdw_cdns_bpt_find_buffer_sizes(command,
+ cdns->bus.params.row,
+ cdns->bus.params.col,
+ msg->len,
+ SDW_BPT_MSG_MAX_BYTES,
+ &data_per_frame,
+ &pdi0_buffer_size,
+ &pdi1_buffer_size,
+ &num_frames);
+ if (ret < 0)
+ goto deprepare_stream;
+
+ sdw->bpt_ctx.pdi0_buffer_size = pdi0_buffer_size;
+ sdw->bpt_ctx.pdi1_buffer_size = pdi1_buffer_size;
+ sdw->bpt_ctx.num_frames = num_frames;
+ sdw->bpt_ctx.data_per_frame = data_per_frame;
+ tx_dma_bandwidth = div_u64((u64)pdi0_buffer_size * 8 * (u64)prop->default_frame_rate,
+ num_frames);
+ rx_dma_bandwidth = div_u64((u64)pdi1_buffer_size * 8 * (u64)prop->default_frame_rate,
+ num_frames);
+
+ dev_dbg(cdns->dev, "Message len %d transferred in %d frames (%d per frame)\n",
+ msg->len, num_frames, data_per_frame);
+ dev_dbg(cdns->dev, "sizes pdi0 %d pdi1 %d tx_bandwidth %d rx_bandwidth %d\n",
+ pdi0_buffer_size, pdi1_buffer_size,
+ tx_dma_bandwidth,
+ rx_dma_bandwidth);
+
+ ret = hda_sdw_bpt_open(cdns->dev->parent, /* PCI device */
+ sdw->instance,
+ &sdw->bpt_ctx.bpt_tx_stream,
+ &sdw->bpt_ctx.dmab_tx_bdl,
+ pdi0_buffer_size,
+ tx_dma_bandwidth,
+ &sdw->bpt_ctx.bpt_rx_stream,
+ &sdw->bpt_ctx.dmab_rx_bdl,
+ pdi1_buffer_size,
+ rx_dma_bandwidth);
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: hda_sdw_bpt_open failed %d\n", __func__, ret);
+ goto deprepare_stream;
+ }
+
+ if (!command) {
+ ret = sdw_cdns_prepare_write_dma_buffer(
+ msg->dev_num, msg->addr,
+ msg->buf, msg->len,
+ data_per_frame,
+ sdw->bpt_ctx.dmab_tx_bdl.area,
+ pdi0_buffer_size,
+ &tx_total_bytes);
+ } else {
+ ret = sdw_cdns_prepare_read_dma_buffer(
+ msg->dev_num, msg->addr,
+ msg->len,
+ data_per_frame,
+ sdw->bpt_ctx.dmab_tx_bdl.area,
+ pdi0_buffer_size,
+ &tx_total_bytes);
+
+ }
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: sdw_prepare_%s_dma_buffer failed %d\n",
+ __func__, command ? "read" : "write", ret);
+ goto bpt_close;
+ }
+
+ return 0;
+
+bpt_close:
+ ret1 = hda_sdw_bpt_close(cdns->dev->parent, /* PCI device */
+ sdw->bpt_ctx.bpt_tx_stream,
+ &sdw->bpt_ctx.dmab_tx_bdl,
+ sdw->bpt_ctx.bpt_rx_stream,
+ &sdw->bpt_ctx.dmab_rx_bdl);
+ if (ret1 < 0)
+ dev_err(cdns->dev, "%s: hda_sdw_bpt_close failed: ret %d\n",
+ __func__, ret1);
+
+deprepare_stream:
+ sdw_deprepare_stream(cdns->bus.bpt_stream);
+
+remove_master:
+ ret1 = sdw_stream_remove_master(&cdns->bus, cdns->bus.bpt_stream);
+ if (ret1 < 0)
+ dev_err(cdns->dev, "%s: remove master failed: %d\n",
+ __func__, ret1);
+
+remove_slave:
+ ret1 = sdw_stream_remove_slave(slave, cdns->bus.bpt_stream);
+ if (ret1 < 0)
+ dev_err(cdns->dev, "%s: remove slave failed: %d\n",
+ __func__, ret1);
+
+release_stream:
+ sdw_release_stream(cdns->bus.bpt_stream);
+ cdns->bus.bpt_stream = NULL;
+
+ return ret;
+}
+
+static int intel_ace2x_bpt_close_stream(struct sdw_intel *sdw,
+ struct sdw_slave *slave,
+ enum sdw_bpt_type mode,
+ struct sdw_bpt_msg *msg)
+{
+ struct sdw_cdns *cdns = &sdw->cdns;
+ int ret1;
+ int ret;
+
+ if (mode != SDW_BRA)
+ return -EINVAL;
+
+ ret = hda_sdw_bpt_close(cdns->dev->parent, /* PCI device */
+ sdw->bpt_ctx.bpt_tx_stream,
+ &sdw->bpt_ctx.dmab_tx_bdl,
+ sdw->bpt_ctx.bpt_rx_stream,
+ &sdw->bpt_ctx.dmab_rx_bdl);
+ if (ret < 0)
+ dev_err(cdns->dev, "%s: hda_sdw_bpt_close failed: ret %d\n",
+ __func__, ret);
+
+ ret1 = sdw_deprepare_stream(cdns->bus.bpt_stream);
+ if (ret1 < 0) {
+ dev_err(cdns->dev, "%s: sdw_deprepare_stream failed: ret %d\n",
+ __func__, ret1);
+ if (!ret)
+ ret = ret1;
+ }
+
+ ret1 = sdw_stream_remove_master(&cdns->bus, cdns->bus.bpt_stream);
+ if (ret1 < 0) {
+ dev_err(cdns->dev, "%s: remove master failed: %d\n",
+ __func__, ret1);
+ if (!ret)
+ ret = ret1;
+ }
+
+ ret1 = sdw_stream_remove_slave(slave, cdns->bus.bpt_stream);
+ if (ret1 < 0) {
+ dev_err(cdns->dev, "%s: remove slave failed: %d\n",
+ __func__, ret1);
+ if (!ret)
+ ret = ret1;
+ }
+
+ cdns->bus.bpt_stream = NULL;
+
+ return ret;
+}
+
+static int intel_ace2x_bpt_send_async(struct sdw_intel *sdw,
+ struct sdw_slave *slave,
+ struct sdw_bpt_msg *msg)
+{
+ struct sdw_cdns *cdns = &sdw->cdns;
+ int ret;
+
+ dev_dbg(cdns->dev, "BPT Transfer start\n");
+
+ ret = hda_sdw_bpt_send_async(cdns->dev->parent, /* PCI device */
+ sdw->bpt_ctx.bpt_tx_stream,
+ sdw->bpt_ctx.bpt_rx_stream);
+ if (ret < 0)
+ return ret;
+
+ ret = sdw_enable_stream(cdns->bus.bpt_stream);
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: sdw_stream_enable failed: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ dev_info(cdns->dev, "%s: done\n", __func__);
+
+ return 0;
+}
+
+static int intel_ace2x_bpt_wait(struct sdw_intel *sdw,
+ struct sdw_slave *slave,
+ struct sdw_bpt_msg *msg)
+{
+ struct sdw_cdns *cdns = &sdw->cdns;
+ int ret;
+
+ dev_dbg(cdns->dev, "BTP Transfer wait\n");
+
+ ret = hda_sdw_bpt_wait(cdns->dev->parent, /* PCI device */
+ sdw->bpt_ctx.bpt_tx_stream,
+ sdw->bpt_ctx.bpt_rx_stream);
+ if (ret < 0)
+ dev_err(cdns->dev, "%s: hda_sdw_bpt_wait failed: %d\n", __func__, ret);
+
+ ret = sdw_disable_stream(cdns->bus.bpt_stream);
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: sdw_stream_enable failed: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ if (0) {
+ /* dump DMA TX buffer */
+ print_hex_dump_debug("DMA out: ", DUMP_PREFIX_OFFSET,
+ 4, 4,
+ sdw->bpt_ctx.dmab_tx_bdl.area,
+ sdw->bpt_ctx.pdi0_buffer_size,
+ false);
+
+ print_hex_dump_debug("DMA in: ", DUMP_PREFIX_OFFSET,
+ 4, 4,
+ sdw->bpt_ctx.dmab_rx_bdl.area,
+ sdw->bpt_ctx.pdi1_buffer_size,
+ false);
+ }
+
+ if (msg->flags & SDW_MSG_FLAG_WRITE) {
+ ret = sdw_cdns_check_write_response(cdns->dev,
+ sdw->bpt_ctx.dmab_rx_bdl.area,
+ sdw->bpt_ctx.pdi1_buffer_size,
+ sdw->bpt_ctx.num_frames);
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: BPT Write failed %d\n", __func__, ret);
+ return ret;
+ }
+ } else {
+ ret = sdw_cdns_check_read_response(cdns->dev,
+ sdw->bpt_ctx.dmab_rx_bdl.area,
+ sdw->bpt_ctx.pdi1_buffer_size,
+ msg->buf, msg->len,
+ sdw->bpt_ctx.num_frames,
+ sdw->bpt_ctx.data_per_frame);
+ if (ret < 0) {
+ dev_err(cdns->dev, "%s: BPT Read failed %d\n", __func__, ret);
+ return ret;
+ }
+ }
+
+ dev_dbg(cdns->dev, "BPT Transfer done\n");
+
+ return 0;
+}
+
/*
* shim vendor-specific (vs) ops
*/
@@ -692,7 +1063,13 @@ const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = {
.sync_check_cmdsync_unlocked = intel_check_cmdsync_unlocked,
.program_sdi = intel_program_sdi,
+
+ .bpt_open_stream = intel_ace2x_bpt_open_stream,
+ .bpt_close_stream = intel_ace2x_bpt_close_stream,
+ .bpt_send_async = intel_ace2x_bpt_send_async,
+ .bpt_wait = intel_ace2x_bpt_wait,
};
EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, SOUNDWIRE_INTEL);
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_MLINK);
+MODULE_IMPORT_NS(SND_SOC_SOF_INTEL_HDA_SDW_BPT);
--
2.39.2
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