rt1308-sdw.c (49ae74abc76b2d9be4777e7ac833674fa4749071) rt1308-sdw.c (1772552eb304f3229309f66e2762e835955e2307)
1// SPDX-License-Identifier: GPL-2.0
2//
3// rt1308-sdw.c -- rt1308 ALSA SoC audio driver
4//
5// Copyright(c) 2019 Realtek Semiconductor Corp.
6//
7//
8#include <linux/delay.h>

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218 if (rt1308->hw_init)
219 return 0;
220
221 regcache_cache_only(rt1308->regmap, false);
222 if (rt1308->first_hw_init)
223 regcache_cache_bypass(rt1308->regmap, true);
224
225 /*
1// SPDX-License-Identifier: GPL-2.0
2//
3// rt1308-sdw.c -- rt1308 ALSA SoC audio driver
4//
5// Copyright(c) 2019 Realtek Semiconductor Corp.
6//
7//
8#include <linux/delay.h>

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218 if (rt1308->hw_init)
219 return 0;
220
221 regcache_cache_only(rt1308->regmap, false);
222 if (rt1308->first_hw_init)
223 regcache_cache_bypass(rt1308->regmap, true);
224
225 /*
226 * PM runtime is only enabled when a Slave reports as Attached
226 * PM runtime status is marked as 'active' only when a Slave reports as Attached
227 */
227 */
228 if (!rt1308->first_hw_init) {
229 /* set autosuspend parameters */
230 pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
231 pm_runtime_use_autosuspend(&slave->dev);
232
228 if (!rt1308->first_hw_init)
233 /* update count of parent 'active' children */
234 pm_runtime_set_active(&slave->dev);
235
229 /* update count of parent 'active' children */
230 pm_runtime_set_active(&slave->dev);
231
236 /* make sure the device does not suspend immediately */
237 pm_runtime_mark_last_busy(&slave->dev);
238
239 pm_runtime_enable(&slave->dev);
240 }
241
242 pm_runtime_get_noresume(&slave->dev);
243
244 /* sw reset */
245 regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
246
247 regmap_read(rt1308->regmap, 0xc710, &tmp);
248 rt1308->hw_ver = tmp;
249 dev_dbg(dev, "%s, hw_ver=0x%x\n", __func__, rt1308->hw_ver);

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620static int rt1308_sdw_component_probe(struct snd_soc_component *component)
621{
622 struct rt1308_sdw_priv *rt1308 = snd_soc_component_get_drvdata(component);
623 int ret;
624
625 rt1308->component = component;
626 rt1308_sdw_parse_dt(rt1308, &rt1308->sdw_slave->dev);
627
232 pm_runtime_get_noresume(&slave->dev);
233
234 /* sw reset */
235 regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
236
237 regmap_read(rt1308->regmap, 0xc710, &tmp);
238 rt1308->hw_ver = tmp;
239 dev_dbg(dev, "%s, hw_ver=0x%x\n", __func__, rt1308->hw_ver);

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610static int rt1308_sdw_component_probe(struct snd_soc_component *component)
611{
612 struct rt1308_sdw_priv *rt1308 = snd_soc_component_get_drvdata(component);
613 int ret;
614
615 rt1308->component = component;
616 rt1308_sdw_parse_dt(rt1308, &rt1308->sdw_slave->dev);
617
618 if (!rt1308->first_hw_init)
619 return 0;
620
628 ret = pm_runtime_resume(component->dev);
629 if (ret < 0 && ret != -EACCES)
630 return ret;
631
632 /* apply BQ params */
633 rt1308_apply_bq_params(rt1308);
634
635 return 0;

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695 */
696 rt1308->hw_init = false;
697 rt1308->first_hw_init = false;
698
699 ret = devm_snd_soc_register_component(dev,
700 &soc_component_sdw_rt1308,
701 rt1308_sdw_dai,
702 ARRAY_SIZE(rt1308_sdw_dai));
621 ret = pm_runtime_resume(component->dev);
622 if (ret < 0 && ret != -EACCES)
623 return ret;
624
625 /* apply BQ params */
626 rt1308_apply_bq_params(rt1308);
627
628 return 0;

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688 */
689 rt1308->hw_init = false;
690 rt1308->first_hw_init = false;
691
692 ret = devm_snd_soc_register_component(dev,
693 &soc_component_sdw_rt1308,
694 rt1308_sdw_dai,
695 ARRAY_SIZE(rt1308_sdw_dai));
696 if (ret < 0)
697 return ret;
703
698
704 dev_dbg(&slave->dev, "%s\n", __func__);
699 /* set autosuspend parameters */
700 pm_runtime_set_autosuspend_delay(dev, 3000);
701 pm_runtime_use_autosuspend(dev);
705
702
706 return ret;
703 /* make sure the device does not suspend immediately */
704 pm_runtime_mark_last_busy(dev);
705
706 pm_runtime_enable(dev);
707
708 /* important note: the device is NOT tagged as 'active' and will remain
709 * 'suspended' until the hardware is enumerated/initialized. This is required
710 * to make sure the ASoC framework use of pm_runtime_get_sync() does not silently
711 * fail with -EACCESS because of race conditions between card creation and enumeration
712 */
713
714 dev_dbg(dev, "%s\n", __func__);
715
716 return 0;
707}
708
709static int rt1308_sdw_probe(struct sdw_slave *slave,
710 const struct sdw_device_id *id)
711{
712 struct regmap *regmap;
713
714 /* Regmap Initialization */
715 regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
716 if (IS_ERR(regmap))
717 return PTR_ERR(regmap);
718
719 return rt1308_sdw_init(&slave->dev, regmap, slave);
720}
721
722static int rt1308_sdw_remove(struct sdw_slave *slave)
723{
717}
718
719static int rt1308_sdw_probe(struct sdw_slave *slave,
720 const struct sdw_device_id *id)
721{
722 struct regmap *regmap;
723
724 /* Regmap Initialization */
725 regmap = devm_regmap_init_sdw(slave, &rt1308_sdw_regmap);
726 if (IS_ERR(regmap))
727 return PTR_ERR(regmap);
728
729 return rt1308_sdw_init(&slave->dev, regmap, slave);
730}
731
732static int rt1308_sdw_remove(struct sdw_slave *slave)
733{
724 struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(&slave->dev);
734 pm_runtime_disable(&slave->dev);
725
735
726 if (rt1308->first_hw_init)
727 pm_runtime_disable(&slave->dev);
728
729 return 0;
730}
731
732static const struct sdw_device_id rt1308_id[] = {
733 SDW_SLAVE_ENTRY_EXT(0x025d, 0x1308, 0x2, 0, 0),
734 {},
735};
736MODULE_DEVICE_TABLE(sdw, rt1308_id);

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737}
738
739static const struct sdw_device_id rt1308_id[] = {
740 SDW_SLAVE_ENTRY_EXT(0x025d, 0x1308, 0x2, 0, 0),
741 {},
742};
743MODULE_DEVICE_TABLE(sdw, rt1308_id);

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