soundwire: cdns: Add port routines
Add support for Cadence port management and implement master port ops. Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com> Signed-off-by: Shreyas NC <shreyas.nc@intel.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>hifive-unleashed-5.1
Vinod Koul
parent
c91605f489
commit
07abeff1ef
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@ -669,6 +669,120 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns)
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}
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EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
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static int cdns_allocate_pdi(struct sdw_cdns *cdns,
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struct sdw_cdns_pdi **stream,
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u32 num, u32 pdi_offset)
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{
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struct sdw_cdns_pdi *pdi;
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int i;
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if (!num)
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return 0;
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pdi = devm_kcalloc(cdns->dev, num, sizeof(*pdi), GFP_KERNEL);
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if (!pdi)
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return -ENOMEM;
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for (i = 0; i < num; i++) {
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pdi[i].num = i + pdi_offset;
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pdi[i].assigned = false;
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}
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*stream = pdi;
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return 0;
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}
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/**
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* sdw_cdns_pdi_init() - PDI initialization routine
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*
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* @cdns: Cadence instance
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* @config: Stream configurations
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*/
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int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
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struct sdw_cdns_stream_config config)
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{
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struct sdw_cdns_streams *stream;
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int offset, i, ret;
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cdns->pcm.num_bd = config.pcm_bd;
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cdns->pcm.num_in = config.pcm_in;
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cdns->pcm.num_out = config.pcm_out;
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cdns->pdm.num_bd = config.pdm_bd;
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cdns->pdm.num_in = config.pdm_in;
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cdns->pdm.num_out = config.pdm_out;
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/* Allocate PDIs for PCMs */
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stream = &cdns->pcm;
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/* First two PDIs are reserved for bulk transfers */
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stream->num_bd -= CDNS_PCM_PDI_OFFSET;
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offset = CDNS_PCM_PDI_OFFSET;
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ret = cdns_allocate_pdi(cdns, &stream->bd,
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stream->num_bd, offset);
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if (ret)
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return ret;
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offset += stream->num_bd;
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ret = cdns_allocate_pdi(cdns, &stream->in,
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stream->num_in, offset);
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if (ret)
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return ret;
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offset += stream->num_in;
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ret = cdns_allocate_pdi(cdns, &stream->out,
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stream->num_out, offset);
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if (ret)
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return ret;
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/* Update total number of PCM PDIs */
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stream->num_pdi = stream->num_bd + stream->num_in + stream->num_out;
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cdns->num_ports = stream->num_pdi;
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/* Allocate PDIs for PDMs */
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stream = &cdns->pdm;
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offset = CDNS_PDM_PDI_OFFSET;
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ret = cdns_allocate_pdi(cdns, &stream->bd,
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stream->num_bd, offset);
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if (ret)
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return ret;
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offset += stream->num_bd;
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ret = cdns_allocate_pdi(cdns, &stream->in,
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stream->num_in, offset);
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if (ret)
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return ret;
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offset += stream->num_in;
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ret = cdns_allocate_pdi(cdns, &stream->out,
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stream->num_out, offset);
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if (ret)
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return ret;
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/* Update total number of PDM PDIs */
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stream->num_pdi = stream->num_bd + stream->num_in + stream->num_out;
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cdns->num_ports += stream->num_pdi;
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cdns->ports = devm_kcalloc(cdns->dev, cdns->num_ports,
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sizeof(*cdns->ports), GFP_KERNEL);
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if (!cdns->ports) {
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ret = -ENOMEM;
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return ret;
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}
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for (i = 0; i < cdns->num_ports; i++) {
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cdns->ports[i].assigned = false;
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cdns->ports[i].num = i + 1; /* Port 0 reserved for bulk */
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}
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return 0;
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}
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EXPORT_SYMBOL(sdw_cdns_pdi_init);
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/**
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* sdw_cdns_init() - Cadence initialization
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* @cdns: Cadence instance
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@ -730,6 +844,134 @@ int sdw_cdns_init(struct sdw_cdns *cdns)
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}
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EXPORT_SYMBOL(sdw_cdns_init);
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int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params)
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{
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struct sdw_cdns *cdns = bus_to_cdns(bus);
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int mcp_clkctrl_off, mcp_clkctrl;
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int divider;
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if (!params->curr_dr_freq) {
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dev_err(cdns->dev, "NULL curr_dr_freq");
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return -EINVAL;
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}
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divider = (params->max_dr_freq / params->curr_dr_freq) - 1;
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if (params->next_bank)
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mcp_clkctrl_off = CDNS_MCP_CLK_CTRL1;
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else
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mcp_clkctrl_off = CDNS_MCP_CLK_CTRL0;
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mcp_clkctrl = cdns_readl(cdns, mcp_clkctrl_off);
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mcp_clkctrl |= divider;
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cdns_writel(cdns, mcp_clkctrl_off, mcp_clkctrl);
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return 0;
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}
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EXPORT_SYMBOL(cdns_bus_conf);
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static int cdns_port_params(struct sdw_bus *bus,
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struct sdw_port_params *p_params, unsigned int bank)
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{
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struct sdw_cdns *cdns = bus_to_cdns(bus);
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int dpn_config = 0, dpn_config_off;
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if (bank)
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dpn_config_off = CDNS_DPN_B1_CONFIG(p_params->num);
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else
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dpn_config_off = CDNS_DPN_B0_CONFIG(p_params->num);
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dpn_config = cdns_readl(cdns, dpn_config_off);
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dpn_config |= ((p_params->bps - 1) <<
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SDW_REG_SHIFT(CDNS_DPN_CONFIG_WL));
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dpn_config |= (p_params->flow_mode <<
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SDW_REG_SHIFT(CDNS_DPN_CONFIG_PORT_FLOW));
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dpn_config |= (p_params->data_mode <<
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SDW_REG_SHIFT(CDNS_DPN_CONFIG_PORT_DAT));
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cdns_writel(cdns, dpn_config_off, dpn_config);
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return 0;
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}
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static int cdns_transport_params(struct sdw_bus *bus,
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struct sdw_transport_params *t_params,
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enum sdw_reg_bank bank)
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{
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struct sdw_cdns *cdns = bus_to_cdns(bus);
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int dpn_offsetctrl = 0, dpn_offsetctrl_off;
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int dpn_config = 0, dpn_config_off;
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int dpn_hctrl = 0, dpn_hctrl_off;
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int num = t_params->port_num;
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int dpn_samplectrl_off;
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/*
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* Note: Only full data port is supported on the Master side for
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* both PCM and PDM ports.
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*/
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if (bank) {
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dpn_config_off = CDNS_DPN_B1_CONFIG(num);
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dpn_samplectrl_off = CDNS_DPN_B1_SAMPLE_CTRL(num);
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dpn_hctrl_off = CDNS_DPN_B1_HCTRL(num);
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dpn_offsetctrl_off = CDNS_DPN_B1_OFFSET_CTRL(num);
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} else {
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dpn_config_off = CDNS_DPN_B0_CONFIG(num);
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dpn_samplectrl_off = CDNS_DPN_B0_SAMPLE_CTRL(num);
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dpn_hctrl_off = CDNS_DPN_B0_HCTRL(num);
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dpn_offsetctrl_off = CDNS_DPN_B0_OFFSET_CTRL(num);
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}
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dpn_config = cdns_readl(cdns, dpn_config_off);
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dpn_config |= (t_params->blk_grp_ctrl <<
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SDW_REG_SHIFT(CDNS_DPN_CONFIG_BGC));
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dpn_config |= (t_params->blk_pkg_mode <<
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SDW_REG_SHIFT(CDNS_DPN_CONFIG_BPM));
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cdns_writel(cdns, dpn_config_off, dpn_config);
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dpn_offsetctrl |= (t_params->offset1 <<
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SDW_REG_SHIFT(CDNS_DPN_OFFSET_CTRL_1));
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dpn_offsetctrl |= (t_params->offset2 <<
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SDW_REG_SHIFT(CDNS_DPN_OFFSET_CTRL_2));
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cdns_writel(cdns, dpn_offsetctrl_off, dpn_offsetctrl);
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dpn_hctrl |= (t_params->hstart <<
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SDW_REG_SHIFT(CDNS_DPN_HCTRL_HSTART));
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dpn_hctrl |= (t_params->hstop << SDW_REG_SHIFT(CDNS_DPN_HCTRL_HSTOP));
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dpn_hctrl |= (t_params->lane_ctrl <<
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SDW_REG_SHIFT(CDNS_DPN_HCTRL_LCTRL));
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cdns_writel(cdns, dpn_hctrl_off, dpn_hctrl);
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cdns_writel(cdns, dpn_samplectrl_off, (t_params->sample_interval - 1));
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return 0;
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}
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static int cdns_port_enable(struct sdw_bus *bus,
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struct sdw_enable_ch *enable_ch, unsigned int bank)
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{
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struct sdw_cdns *cdns = bus_to_cdns(bus);
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int dpn_chnen_off, ch_mask;
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if (bank)
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dpn_chnen_off = CDNS_DPN_B1_CH_EN(enable_ch->port_num);
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else
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dpn_chnen_off = CDNS_DPN_B0_CH_EN(enable_ch->port_num);
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ch_mask = enable_ch->ch_mask * enable_ch->enable;
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cdns_writel(cdns, dpn_chnen_off, ch_mask);
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return 0;
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}
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static const struct sdw_master_port_ops cdns_port_ops = {
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.dpn_set_port_params = cdns_port_params,
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.dpn_set_port_transport_params = cdns_transport_params,
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.dpn_port_enable_ch = cdns_port_enable,
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};
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/**
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* sdw_cdns_probe() - Cadence probe routine
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* @cdns: Cadence instance
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@ -737,6 +979,7 @@ EXPORT_SYMBOL(sdw_cdns_init);
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int sdw_cdns_probe(struct sdw_cdns *cdns)
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{
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init_completion(&cdns->tx_complete);
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cdns->bus.port_ops = &cdns_port_ops;
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return 0;
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}
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@ -4,6 +4,92 @@
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#ifndef __SDW_CADENCE_H
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#define __SDW_CADENCE_H
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/**
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* struct sdw_cdns_pdi: PDI (Physical Data Interface) instance
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*
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* @assigned: pdi assigned
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* @num: pdi number
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* @intel_alh_id: link identifier
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* @l_ch_num: low channel for PDI
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* @h_ch_num: high channel for PDI
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* @ch_count: total channel count for PDI
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* @dir: data direction
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* @type: stream type, PDM or PCM
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*/
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struct sdw_cdns_pdi {
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bool assigned;
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int num;
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int intel_alh_id;
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int l_ch_num;
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int h_ch_num;
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int ch_count;
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enum sdw_data_direction dir;
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enum sdw_stream_type type;
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};
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/**
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* struct sdw_cdns_port: Cadence port structure
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*
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* @num: port number
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* @assigned: port assigned
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* @ch: channel count
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* @direction: data port direction
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* @pdi: pdi for this port
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*/
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struct sdw_cdns_port {
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unsigned int num;
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bool assigned;
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unsigned int ch;
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enum sdw_data_direction direction;
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struct sdw_cdns_pdi *pdi;
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};
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/**
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* struct sdw_cdns_streams: Cadence stream data structure
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*
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* @num_bd: number of bidirectional streams
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* @num_in: number of input streams
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* @num_out: number of output streams
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* @num_ch_bd: number of bidirectional stream channels
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* @num_ch_bd: number of input stream channels
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* @num_ch_bd: number of output stream channels
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* @num_pdi: total number of PDIs
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* @bd: bidirectional streams
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* @in: input streams
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* @out: output streams
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*/
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struct sdw_cdns_streams {
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unsigned int num_bd;
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unsigned int num_in;
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unsigned int num_out;
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unsigned int num_ch_bd;
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unsigned int num_ch_in;
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unsigned int num_ch_out;
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unsigned int num_pdi;
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struct sdw_cdns_pdi *bd;
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struct sdw_cdns_pdi *in;
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struct sdw_cdns_pdi *out;
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};
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/**
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* struct sdw_cdns_stream_config: stream configuration
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*
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* @pcm_bd: number of bidirectional PCM streams supported
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* @pcm_in: number of input PCM streams supported
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* @pcm_out: number of output PCM streams supported
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* @pdm_bd: number of bidirectional PDM streams supported
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* @pdm_in: number of input PDM streams supported
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* @pdm_out: number of output PDM streams supported
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*/
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struct sdw_cdns_stream_config {
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unsigned int pcm_bd;
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unsigned int pcm_in;
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unsigned int pcm_out;
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unsigned int pdm_bd;
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unsigned int pdm_in;
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unsigned int pdm_out;
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};
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/**
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* struct sdw_cdns - Cadence driver context
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* @dev: Linux device
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@ -12,6 +98,10 @@
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* @response_buf: SoundWire response buffer
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* @tx_complete: Tx completion
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* @defer: Defer pointer
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* @ports: Data ports
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* @num_ports: Total number of data ports
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* @pcm: PCM streams
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* @pdm: PDM streams
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* @registers: Cadence registers
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* @link_up: Link status
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* @msg_count: Messages sent on bus
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@ -25,6 +115,12 @@ struct sdw_cdns {
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struct completion tx_complete;
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struct sdw_defer *defer;
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struct sdw_cdns_port *ports;
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int num_ports;
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struct sdw_cdns_streams pcm;
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struct sdw_cdns_streams pdm;
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void __iomem *registers;
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bool link_up;
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@ -42,6 +138,8 @@ irqreturn_t sdw_cdns_irq(int irq, void *dev_id);
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irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
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int sdw_cdns_init(struct sdw_cdns *cdns);
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int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
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struct sdw_cdns_stream_config config);
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int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
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enum sdw_command_response
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@ -53,4 +151,6 @@ cdns_xfer_msg_defer(struct sdw_bus *bus,
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enum sdw_command_response
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cdns_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num);
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int cdns_bus_conf(struct sdw_bus *bus, struct sdw_bus_params *params);
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#endif /* __SDW_CADENCE_H */
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@ -257,6 +257,7 @@ static struct sdw_master_ops sdw_intel_ops = {
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.xfer_msg = cdns_xfer_msg,
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.xfer_msg_defer = cdns_xfer_msg_defer,
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.reset_page_addr = cdns_reset_page_addr,
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.set_bus_conf = cdns_bus_conf,
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};
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/*
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