[alsa-devel] [PATCH v6 10/13] soundwire: cdns: Add port routines
Vinod Koul
vkoul at kernel.org
Thu Apr 26 15:20:06 CEST 2018
Add support for Cadence port management and implement
master port ops.
Signed-off-by: Sanyog Kale <sanyog.r.kale at intel.com>
Signed-off-by: Shreyas NC <shreyas.nc at intel.com>
Signed-off-by: Vinod Koul <vkoul at kernel.org>
---
drivers/soundwire/cadence_master.c | 243 +++++++++++++++++++++++++++++++++++++
drivers/soundwire/cadence_master.h | 100 +++++++++++++++
drivers/soundwire/intel.c | 1 +
3 files changed, 344 insertions(+)
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index b0c09efd8f83..112479294d53 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -669,6 +669,120 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns)
}
EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
+static int cdns_allocate_pdi(struct sdw_cdns *cdns,
+ struct sdw_cdns_pdi **stream,
+ u32 num, u32 pdi_offset)
+{
+ struct sdw_cdns_pdi *pdi;
+ int i;
+
+ if (!num)
+ return 0;
+
+ pdi = devm_kcalloc(cdns->dev, num, sizeof(*pdi), GFP_KERNEL);
+ if (!pdi)
+ return -ENOMEM;
+
+ for (i = 0; i < num; i++) {
+ pdi[i].num = i + pdi_offset;
+ pdi[i].assigned = false;
+ }
+
+ *stream = pdi;
+ return 0;
+}
+
+/**
+ * sdw_cdns_pdi_init() - PDI initialization routine
+ *
+ * @cdns: Cadence instance
+ * @config: Stream configurations
+ */
+int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
+ struct sdw_cdns_stream_config config)
+{
+ struct sdw_cdns_streams *stream;
+ int offset, i, ret;
+
+ cdns->pcm.num_bd = config.pcm_bd;
+ cdns->pcm.num_in = config.pcm_in;
+ cdns->pcm.num_out = config.pcm_out;
+ cdns->pdm.num_bd = config.pdm_bd;
+ cdns->pdm.num_in = config.pdm_in;
+ cdns->pdm.num_out = config.pdm_out;
+
+ /* Allocate PDIs for PCMs */
+ stream = &cdns->pcm;
+
+ /* First two PDIs are reserved for bulk transfers */
+ stream->num_bd -= CDNS_PCM_PDI_OFFSET;
+ offset = CDNS_PCM_PDI_OFFSET;
+
+ ret = cdns_allocate_pdi(cdns, &stream->bd,
+ stream->num_bd, offset);
+ if (ret)
+ return ret;
+
+ offset += stream->num_bd;
+
+ ret = cdns_allocate_pdi(cdns, &stream->in,
+ stream->num_in, offset);
+ if (ret)
+ return ret;
+
+ offset += stream->num_in;
+
+ ret = cdns_allocate_pdi(cdns, &stream->out,
+ stream->num_out, offset);
+ if (ret)
+ return ret;
+
+ /* Update total number of PCM PDIs */
+ stream->num_pdi = stream->num_bd + stream->num_in + stream->num_out;
+ cdns->num_ports = stream->num_pdi;
+
+ /* Allocate PDIs for PDMs */
+ stream = &cdns->pdm;
+ offset = CDNS_PDM_PDI_OFFSET;
+ ret = cdns_allocate_pdi(cdns, &stream->bd,
+ stream->num_bd, offset);
+ if (ret)
+ return ret;
+
+ offset += stream->num_bd;
+
+ ret = cdns_allocate_pdi(cdns, &stream->in,
+ stream->num_in, offset);
+ if (ret)
+ return ret;
+
+ offset += stream->num_in;
+
+ ret = cdns_allocate_pdi(cdns, &stream->out,
+ stream->num_out, offset);
+ if (ret)
+ return ret;
+
+ /* Update total number of PDM PDIs */
+ stream->num_pdi = stream->num_bd + stream->num_in + stream->num_out;
+ cdns->num_ports += stream->num_pdi;
+
+ cdns->ports = devm_kcalloc(cdns->dev, cdns->num_ports,
+ sizeof(*cdns->ports), GFP_KERNEL);
+ if (!cdns->ports) {
+ ret = -ENOMEM;
+ return ret;
+ }
+
+ for (i = 0; i < cdns->num_ports; i++) {
+ cdns->ports[i].assigned = false;
+ cdns->ports[i].num = i + 1; /* Port 0 reserved for bulk */
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(sdw_cdns_pdi_init);
+
/**
* sdw_cdns_init() - Cadence initialization
* @cdns: Cadence instance
@@ -730,6 +844,134 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
}
EXPORT_SYMBOL(sdw_cdns_init);
+int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params)
+{
+ struct sdw_cdns *cdns = bus_to_cdns(bus);
+ int mcp_clkctrl_off, mcp_clkctrl;
+ int divider;
+
+ if (!params->curr_dr_freq) {
+ dev_err(cdns->dev, "NULL curr_dr_freq");
+ return -EINVAL;
+ }
+
+ divider = (params->max_dr_freq / params->curr_dr_freq) - 1;
+
+ if (params->next_bank)
+ mcp_clkctrl_off = CDNS_MCP_CLK_CTRL1;
+ else
+ mcp_clkctrl_off = CDNS_MCP_CLK_CTRL0;
+
+ mcp_clkctrl = cdns_readl(cdns, mcp_clkctrl_off);
+ mcp_clkctrl |= divider;
+ cdns_writel(cdns, mcp_clkctrl_off, mcp_clkctrl);
+
+ return 0;
+}
+EXPORT_SYMBOL(cdns_bus_conf);
+
+static int cdns_port_params(struct sdw_bus *bus,
+ struct sdw_port_params *p_params, unsigned int bank)
+{
+ struct sdw_cdns *cdns = bus_to_cdns(bus);
+ int dpn_config = 0, dpn_config_off;
+
+ if (bank)
+ dpn_config_off = CDNS_DPN_B1_CONFIG(p_params->num);
+ else
+ dpn_config_off = CDNS_DPN_B0_CONFIG(p_params->num);
+
+ dpn_config = cdns_readl(cdns, dpn_config_off);
+
+ dpn_config |= ((p_params->bps - 1) <<
+ SDW_REG_SHIFT(CDNS_DPN_CONFIG_WL));
+ dpn_config |= (p_params->flow_mode <<
+ SDW_REG_SHIFT(CDNS_DPN_CONFIG_PORT_FLOW));
+ dpn_config |= (p_params->data_mode <<
+ SDW_REG_SHIFT(CDNS_DPN_CONFIG_PORT_DAT));
+
+ cdns_writel(cdns, dpn_config_off, dpn_config);
+
+ return 0;
+}
+
+static int cdns_transport_params(struct sdw_bus *bus,
+ struct sdw_transport_params *t_params,
+ enum sdw_reg_bank bank)
+{
+ struct sdw_cdns *cdns = bus_to_cdns(bus);
+ int dpn_offsetctrl = 0, dpn_offsetctrl_off;
+ int dpn_config = 0, dpn_config_off;
+ int dpn_hctrl = 0, dpn_hctrl_off;
+ int num = t_params->port_num;
+ int dpn_samplectrl_off;
+
+ /*
+ * Note: Only full data port is supported on the Master side for
+ * both PCM and PDM ports.
+ */
+
+ if (bank) {
+ dpn_config_off = CDNS_DPN_B1_CONFIG(num);
+ dpn_samplectrl_off = CDNS_DPN_B1_SAMPLE_CTRL(num);
+ dpn_hctrl_off = CDNS_DPN_B1_HCTRL(num);
+ dpn_offsetctrl_off = CDNS_DPN_B1_OFFSET_CTRL(num);
+ } else {
+ dpn_config_off = CDNS_DPN_B0_CONFIG(num);
+ dpn_samplectrl_off = CDNS_DPN_B0_SAMPLE_CTRL(num);
+ dpn_hctrl_off = CDNS_DPN_B0_HCTRL(num);
+ dpn_offsetctrl_off = CDNS_DPN_B0_OFFSET_CTRL(num);
+ }
+
+ dpn_config = cdns_readl(cdns, dpn_config_off);
+
+ dpn_config |= (t_params->blk_grp_ctrl <<
+ SDW_REG_SHIFT(CDNS_DPN_CONFIG_BGC));
+ dpn_config |= (t_params->blk_pkg_mode <<
+ SDW_REG_SHIFT(CDNS_DPN_CONFIG_BPM));
+ cdns_writel(cdns, dpn_config_off, dpn_config);
+
+ dpn_offsetctrl |= (t_params->offset1 <<
+ SDW_REG_SHIFT(CDNS_DPN_OFFSET_CTRL_1));
+ dpn_offsetctrl |= (t_params->offset2 <<
+ SDW_REG_SHIFT(CDNS_DPN_OFFSET_CTRL_2));
+ cdns_writel(cdns, dpn_offsetctrl_off, dpn_offsetctrl);
+
+ dpn_hctrl |= (t_params->hstart <<
+ SDW_REG_SHIFT(CDNS_DPN_HCTRL_HSTART));
+ dpn_hctrl |= (t_params->hstop << SDW_REG_SHIFT(CDNS_DPN_HCTRL_HSTOP));
+ dpn_hctrl |= (t_params->lane_ctrl <<
+ SDW_REG_SHIFT(CDNS_DPN_HCTRL_LCTRL));
+
+ cdns_writel(cdns, dpn_hctrl_off, dpn_hctrl);
+ cdns_writel(cdns, dpn_samplectrl_off, (t_params->sample_interval - 1));
+
+ return 0;
+}
+
+static int cdns_port_enable(struct sdw_bus *bus,
+ struct sdw_enable_ch *enable_ch, unsigned int bank)
+{
+ struct sdw_cdns *cdns = bus_to_cdns(bus);
+ int dpn_chnen_off, ch_mask;
+
+ if (bank)
+ dpn_chnen_off = CDNS_DPN_B1_CH_EN(enable_ch->port_num);
+ else
+ dpn_chnen_off = CDNS_DPN_B0_CH_EN(enable_ch->port_num);
+
+ ch_mask = enable_ch->ch_mask * enable_ch->enable;
+ cdns_writel(cdns, dpn_chnen_off, ch_mask);
+
+ return 0;
+}
+
+static const struct sdw_master_port_ops cdns_port_ops = {
+ .dpn_set_port_params = cdns_port_params,
+ .dpn_set_port_transport_params = cdns_transport_params,
+ .dpn_port_enable_ch = cdns_port_enable,
+};
+
/**
* sdw_cdns_probe() - Cadence probe routine
* @cdns: Cadence instance
@@ -737,6 +979,7 @@ EXPORT_SYMBOL(sdw_cdns_init);
int sdw_cdns_probe(struct sdw_cdns *cdns)
{
init_completion(&cdns->tx_complete);
+ cdns->bus.port_ops = &cdns_port_ops;
return 0;
}
diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h
index 3ec74fa5f4f9..98a17f57918f 100644
--- a/drivers/soundwire/cadence_master.h
+++ b/drivers/soundwire/cadence_master.h
@@ -5,6 +5,92 @@
#define __SDW_CADENCE_H
/**
+ * struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
+ *
+ * @assigned: pdi assigned
+ * @num: pdi number
+ * @intel_alh_id: link identifier
+ * @l_ch_num: low channel for PDI
+ * @h_ch_num: high channel for PDI
+ * @ch_count: total channel count for PDI
+ * @dir: data direction
+ * @type: stream type, PDM or PCM
+ */
+struct sdw_cdns_pdi {
+ bool assigned;
+ int num;
+ int intel_alh_id;
+ int l_ch_num;
+ int h_ch_num;
+ int ch_count;
+ enum sdw_data_direction dir;
+ enum sdw_stream_type type;
+};
+
+/**
+ * struct sdw_cdns_port: Cadence port structure
+ *
+ * @num: port number
+ * @assigned: port assigned
+ * @ch: channel count
+ * @direction: data port direction
+ * @pdi: pdi for this port
+ */
+struct sdw_cdns_port {
+ unsigned int num;
+ bool assigned;
+ unsigned int ch;
+ enum sdw_data_direction direction;
+ struct sdw_cdns_pdi *pdi;
+};
+
+/**
+ * struct sdw_cdns_streams: Cadence stream data structure
+ *
+ * @num_bd: number of bidirectional streams
+ * @num_in: number of input streams
+ * @num_out: number of output streams
+ * @num_ch_bd: number of bidirectional stream channels
+ * @num_ch_bd: number of input stream channels
+ * @num_ch_bd: number of output stream channels
+ * @num_pdi: total number of PDIs
+ * @bd: bidirectional streams
+ * @in: input streams
+ * @out: output streams
+ */
+struct sdw_cdns_streams {
+ unsigned int num_bd;
+ unsigned int num_in;
+ unsigned int num_out;
+ unsigned int num_ch_bd;
+ unsigned int num_ch_in;
+ unsigned int num_ch_out;
+ unsigned int num_pdi;
+ struct sdw_cdns_pdi *bd;
+ struct sdw_cdns_pdi *in;
+ struct sdw_cdns_pdi *out;
+};
+
+/**
+ * struct sdw_cdns_stream_config: stream configuration
+ *
+ * @pcm_bd: number of bidirectional PCM streams supported
+ * @pcm_in: number of input PCM streams supported
+ * @pcm_out: number of output PCM streams supported
+ * @pdm_bd: number of bidirectional PDM streams supported
+ * @pdm_in: number of input PDM streams supported
+ * @pdm_out: number of output PDM streams supported
+ */
+struct sdw_cdns_stream_config {
+ unsigned int pcm_bd;
+ unsigned int pcm_in;
+ unsigned int pcm_out;
+ unsigned int pdm_bd;
+ unsigned int pdm_in;
+ unsigned int pdm_out;
+};
+
+/**
* struct sdw_cdns - Cadence driver context
* @dev: Linux device
* @bus: Bus handle
@@ -12,6 +98,10 @@
* @response_buf: SoundWire response buffer
* @tx_complete: Tx completion
* @defer: Defer pointer
+ * @ports: Data ports
+ * @num_ports: Total number of data ports
+ * @pcm: PCM streams
+ * @pdm: PDM streams
* @registers: Cadence registers
* @link_up: Link status
* @msg_count: Messages sent on bus
@@ -25,6 +115,12 @@ struct sdw_cdns {
struct completion tx_complete;
struct sdw_defer *defer;
+ struct sdw_cdns_port *ports;
+ int num_ports;
+
+ struct sdw_cdns_streams pcm;
+ struct sdw_cdns_streams pdm;
+
void __iomem *registers;
bool link_up;
@@ -42,6 +138,8 @@ irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
int sdw_cdns_init(struct sdw_cdns *cdns);
+int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
+ struct sdw_cdns_stream_config config);
int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
enum sdw_command_response
@@ -53,4 +151,6 @@ cdns_xfer_msg_defer(struct sdw_bus *bus,
enum sdw_command_response
cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
+
+int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
#endif /* __SDW_CADENCE_H */
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index aa0c60133de5..a64f87a08cfd 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -257,6 +257,7 @@ static struct sdw_master_ops sdw_intel_ops = {
.xfer_msg = cdns_xfer_msg,
.xfer_msg_defer = cdns_xfer_msg_defer,
.reset_page_addr = cdns_reset_page_addr,
+ .set_bus_conf = cdns_bus_conf,
};
/*
--
2.7.4
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