4 // tegra186_dspk.c - Tegra186 DSPK driver
32 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_fifo_th()  local
34 	ucontrol->value.integer.value[0] = dspk->rx_fifo_th;  in tegra186_dspk_get_fifo_th()
43 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_fifo_th()  local
46 	if (value == dspk->rx_fifo_th)  in tegra186_dspk_put_fifo_th()
49 	dspk->rx_fifo_th = value;  in tegra186_dspk_put_fifo_th()
58 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_osr_val()  local
60 	ucontrol->value.enumerated.item[0] = dspk->osr_val;  in tegra186_dspk_get_osr_val()
69 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_osr_val()  local
72 	if (value == dspk->osr_val)  in tegra186_dspk_put_osr_val()
75 	dspk->osr_val = value;  in tegra186_dspk_put_osr_val()
84 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_pol_sel()  local
86 	ucontrol->value.enumerated.item[0] = dspk->lrsel;  in tegra186_dspk_get_pol_sel()
95 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_pol_sel()  local
98 	if (value == dspk->lrsel)  in tegra186_dspk_put_pol_sel()
101 	dspk->lrsel = value;  in tegra186_dspk_put_pol_sel()
110 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_ch_sel()  local
112 	ucontrol->value.enumerated.item[0] = dspk->ch_sel;  in tegra186_dspk_get_ch_sel()
121 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_ch_sel()  local
124 	if (value == dspk->ch_sel)  in tegra186_dspk_put_ch_sel()
127 	dspk->ch_sel = value;  in tegra186_dspk_put_ch_sel()
136 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_mono_to_stereo()  local
138 	ucontrol->value.enumerated.item[0] = dspk->mono_to_stereo;  in tegra186_dspk_get_mono_to_stereo()
147 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_mono_to_stereo()  local
150 	if (value == dspk->mono_to_stereo)  in tegra186_dspk_put_mono_to_stereo()
153 	dspk->mono_to_stereo = value;  in tegra186_dspk_put_mono_to_stereo()
162 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_get_stereo_to_mono()  local
164 	ucontrol->value.enumerated.item[0] = dspk->stereo_to_mono;  in tegra186_dspk_get_stereo_to_mono()
173 	struct tegra186_dspk *dspk = snd_soc_component_get_drvdata(codec);  in tegra186_dspk_put_stereo_to_mono()  local
176 	if (value == dspk->stereo_to_mono)  in tegra186_dspk_put_stereo_to_mono()
179 	dspk->stereo_to_mono = value;  in tegra186_dspk_put_stereo_to_mono()
186 	struct tegra186_dspk *dspk = dev_get_drvdata(dev);  in tegra186_dspk_runtime_suspend()  local
188 	regcache_cache_only(dspk->regmap, true);  in tegra186_dspk_runtime_suspend()
189 	regcache_mark_dirty(dspk->regmap);  in tegra186_dspk_runtime_suspend()
191 	clk_disable_unprepare(dspk->clk_dspk);  in tegra186_dspk_runtime_suspend()
198 	struct tegra186_dspk *dspk = dev_get_drvdata(dev);  in tegra186_dspk_runtime_resume()  local
201 	err = clk_prepare_enable(dspk->clk_dspk);  in tegra186_dspk_runtime_resume()
203 		dev_err(dev, "failed to enable DSPK clock, err: %d\n", err);  in tegra186_dspk_runtime_resume()
207 	regcache_cache_only(dspk->regmap, false);  in tegra186_dspk_runtime_resume()
208 	regcache_sync(dspk->regmap);  in tegra186_dspk_runtime_resume()
217 	struct tegra186_dspk *dspk = snd_soc_dai_get_drvdata(dai);  in tegra186_dspk_hw_params()  local
230 	switch (dspk->ch_sel) {  in tegra186_dspk_hw_params()
239 		dev_err(dev, "Invalid DSPK client channels\n");  in tegra186_dspk_hw_params()
262 	if (dspk->rx_fifo_th > max_th)  in tegra186_dspk_hw_params()
263 		dspk->rx_fifo_th = max_th;  in tegra186_dspk_hw_params()
265 	cif_conf.threshold = dspk->rx_fifo_th;  in tegra186_dspk_hw_params()
266 	cif_conf.mono_conv = dspk->mono_to_stereo;  in tegra186_dspk_hw_params()
267 	cif_conf.stereo_conv = dspk->stereo_to_mono;  in tegra186_dspk_hw_params()
269 	tegra_set_cif(dspk->regmap, TEGRA186_DSPK_RX_CIF_CTRL,  in tegra186_dspk_hw_params()
273 	 * DSPK clock and PDM codec clock should be synchronous with 4:1 ratio,  in tegra186_dspk_hw_params()
278 	dspk_clk = (DSPK_OSR_FACTOR << dspk->osr_val) * srate * DSPK_CLK_RATIO;  in tegra186_dspk_hw_params()
280 	err = clk_set_rate(dspk->clk_dspk, dspk_clk);  in tegra186_dspk_hw_params()
282 		dev_err(dev, "can't set DSPK clock rate %u, err: %d\n",  in tegra186_dspk_hw_params()
288 	regmap_update_bits(dspk->regmap,  in tegra186_dspk_hw_params()
296 			   (dspk->osr_val << DSPK_OSR_SHIFT) |  in tegra186_dspk_hw_params()
297 			   ((dspk->ch_sel + 1) << CH_SEL_SHIFT) |  in tegra186_dspk_hw_params()
298 			   (dspk->lrsel << LRSEL_POL_SHIFT));  in tegra186_dspk_hw_params()
309 	    .name = "DSPK-CIF",
320 	    .name = "DSPK-DAP",
471 	{ .compatible = "nvidia,tegra186-dspk" },
479 	struct tegra186_dspk *dspk;  in tegra186_dspk_platform_probe()  local
483 	dspk = devm_kzalloc(dev, sizeof(*dspk), GFP_KERNEL);  in tegra186_dspk_platform_probe()
484 	if (!dspk)  in tegra186_dspk_platform_probe()
487 	dspk->osr_val = DSPK_OSR_64;  in tegra186_dspk_platform_probe()
488 	dspk->lrsel = DSPK_LRSEL_LEFT;  in tegra186_dspk_platform_probe()
489 	dspk->ch_sel = DSPK_CH_SELECT_STEREO;  in tegra186_dspk_platform_probe()
490 	dspk->mono_to_stereo = 0; /* "Zero" */  in tegra186_dspk_platform_probe()
492 	dev_set_drvdata(dev, dspk);  in tegra186_dspk_platform_probe()
494 	dspk->clk_dspk = devm_clk_get(dev, "dspk");  in tegra186_dspk_platform_probe()
495 	if (IS_ERR(dspk->clk_dspk)) {  in tegra186_dspk_platform_probe()
496 		dev_err(dev, "can't retrieve DSPK clock\n");  in tegra186_dspk_platform_probe()
497 		return PTR_ERR(dspk->clk_dspk);  in tegra186_dspk_platform_probe()
504 	dspk->regmap = devm_regmap_init_mmio(dev, regs, &tegra186_dspk_regmap);  in tegra186_dspk_platform_probe()
505 	if (IS_ERR(dspk->regmap)) {  in tegra186_dspk_platform_probe()
507 		return PTR_ERR(dspk->regmap);  in tegra186_dspk_platform_probe()
510 	regcache_cache_only(dspk->regmap, true);  in tegra186_dspk_platform_probe()
516 		dev_err(dev, "can't register DSPK component, err: %d\n",  in tegra186_dspk_platform_probe()
540 		.name = "tegra186-dspk",
551 MODULE_DESCRIPTION("Tegra186 ASoC DSPK driver");