sound/soc/codecs/rt712-sdca-sdw.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 //
 // rt712-sdca-sdw.c -- rt712 SDCA ALSA SoC audio driver
 //
 // Copyright(c) 2023 Realtek Semiconductor Corp.
 //
 //

 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/soundwire/sdw_registers.h>
 #include "rt712-sdca.h"
 #include "rt712-sdca-sdw.h"

 static bool rt712_sdca_readable_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case 0x201a ... 0x201f:
 	case 0x2029 ... 0x202a:
 	case 0x202d ... 0x2034:
 	case 0x2230 ... 0x2232:
 	case 0x2f01 ... 0x2f0a:
 	case 0x2f35 ... 0x2f36:
 	case 0x2f50:
 	case 0x2f54:
 	case 0x2f58 ... 0x2f5d:
 	case 0x3201:
 	case 0x320c:
 	case 0x3301 ... 0x3303:
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_SELECTED_MODE, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_DETECTED_MODE, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
 		SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case RT712_BUF_ADDR_HID1 ... RT712_BUF_ADDR_HID2:
 		return true;
 	default:
 		return false;
 	}
 }

 static bool rt712_sdca_volatile_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case 0x201b:
 	case 0x201c:
 	case 0x201d:
 	case 0x201f:
 	case 0x202d ... 0x202f:
 	case 0x2230:
 	case 0x2f01:
 	case 0x2f35:
 	case 0x320c:
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_DETECTED_MODE, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
 		SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
 	case RT712_BUF_ADDR_HID1 ... RT712_BUF_ADDR_HID2:
 		return true;
 	default:
 		return false;
 	}
 }

 static bool rt712_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case 0x2000000 ... 0x200008e:
 	case 0x5300000 ... 0x530000e:
 	case 0x5400000 ... 0x540000e:
 	case 0x5600000 ... 0x5600008:
 	case 0x5700000 ... 0x570000d:
 	case 0x5800000 ... 0x5800021:
 	case 0x5900000 ... 0x5900028:
 	case 0x5a00000 ... 0x5a00009:
 	case 0x5b00000 ... 0x5b00051:
 	case 0x5c00000 ... 0x5c0009a:
 	case 0x5d00000 ... 0x5d00009:
 	case 0x5f00000 ... 0x5f00030:
 	case 0x6100000 ... 0x61000f1:
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU05, RT712_SDCA_CTL_FU_VOLUME, CH_01):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU05, RT712_SDCA_CTL_FU_VOLUME, CH_02):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU0F, RT712_SDCA_CTL_FU_VOLUME, CH_01):
 	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU0F, RT712_SDCA_CTL_FU_VOLUME, CH_02):
 	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT_USER_FU06, RT712_SDCA_CTL_FU_VOLUME, CH_01):
 	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT_USER_FU06, RT712_SDCA_CTL_FU_VOLUME, CH_02):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_01):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_02):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_03):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_04):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_01):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_02):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_03):
 	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_04):
 		return true;
 	default:
 		return false;
 	}
 }

 static bool rt712_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case 0x2000000:
 	case 0x200001a:
 	case 0x2000020:
 	case 0x2000024:
 	case 0x2000030:
 	case 0x2000046:
 	case 0x200008a:
 	case 0x5800000:
 	case 0x5800001:
 	case 0x6100008:
 		return true;
 	default:
 		return false;
 	}
 }

 static const struct regmap_config rt712_sdca_regmap = {
 	.reg_bits = 32,
 	.val_bits = 8,
 	.readable_reg = rt712_sdca_readable_register,
 	.volatile_reg = rt712_sdca_volatile_register,
 	.max_register = 0x44ffffff,
 	.reg_defaults = rt712_sdca_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(rt712_sdca_reg_defaults),
 	.cache_type = REGCACHE_MAPLE,
 	.use_single_read = true,
 	.use_single_write = true,
 };

 static const struct regmap_config rt712_sdca_mbq_regmap = {
 	.name = "sdw-mbq",
 	.reg_bits = 32,
 	.val_bits = 16,
 	.readable_reg = rt712_sdca_mbq_readable_register,
 	.volatile_reg = rt712_sdca_mbq_volatile_register,
 	.max_register = 0x41000312,
 	.reg_defaults = rt712_sdca_mbq_defaults,
 	.num_reg_defaults = ARRAY_SIZE(rt712_sdca_mbq_defaults),
 	.cache_type = REGCACHE_MAPLE,
 	.use_single_read = true,
 	.use_single_write = true,
 };

 static int rt712_sdca_update_status(struct sdw_slave *slave,
 				enum sdw_slave_status status)
 {
 	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);

 	if (status == SDW_SLAVE_UNATTACHED)
 		rt712->hw_init = false;

 	if (status == SDW_SLAVE_ATTACHED) {
 		if (rt712->hs_jack) {
 			/*
 			 * Due to the SCP_SDCA_INTMASK will be cleared by any reset, and then
 			 * if the device attached again, we will need to set the setting back.
 			 * It could avoid losing the jack detection interrupt.
 			 * This also could sync with the cache value as the rt712_sdca_jack_init set.
 			 */
 			sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INTMASK1,
 				SDW_SCP_SDCA_INTMASK_SDCA_0);
 			sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INTMASK2,
 				SDW_SCP_SDCA_INTMASK_SDCA_8);
 		}
 	}

 	/*
 	 * Perform initialization only if slave status is present and
 	 * hw_init flag is false
 	 */
 	if (rt712->hw_init || status != SDW_SLAVE_ATTACHED)
 		return 0;

 	/* perform I/O transfers required for Slave initialization */
 	return rt712_sdca_io_init(&slave->dev, slave);
 }

 static int rt712_sdca_read_prop(struct sdw_slave *slave)
 {
 	struct sdw_slave_prop *prop = &slave->prop;
 	int nval;
 	int i, j;
 	u32 bit;
 	unsigned long addr;
 	struct sdw_dpn_prop *dpn;

 	sdw_slave_read_prop(slave);

 	prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
 	prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;

 	prop->paging_support = true;

 	/* first we need to allocate memory for set bits in port lists */
 	prop->source_ports = BIT(8) | BIT(4); /* BITMAP: 100010000 */
 	prop->sink_ports = BIT(3) | BIT(1); /* BITMAP:  00001010 */

 	nval = hweight32(prop->source_ports);
 	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
 		sizeof(*prop->src_dpn_prop), GFP_KERNEL);
 	if (!prop->src_dpn_prop)
 		return -ENOMEM;

 	i = 0;
 	dpn = prop->src_dpn_prop;
 	addr = prop->source_ports;
 	for_each_set_bit(bit, &addr, 32) {
 		dpn[i].num = bit;
 		dpn[i].type = SDW_DPN_FULL;
 		dpn[i].simple_ch_prep_sm = true;
 		dpn[i].ch_prep_timeout = 10;
 		i++;
 	}

 	/* do this again for sink now */
 	nval = hweight32(prop->sink_ports);
 	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
 		sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
 	if (!prop->sink_dpn_prop)
 		return -ENOMEM;

 	j = 0;
 	dpn = prop->sink_dpn_prop;
 	addr = prop->sink_ports;
 	for_each_set_bit(bit, &addr, 32) {
 		dpn[j].num = bit;
 		dpn[j].type = SDW_DPN_FULL;
 		dpn[j].simple_ch_prep_sm = true;
 		dpn[j].ch_prep_timeout = 10;
 		j++;
 	}

 	/* set the timeout values */
 	prop->clk_stop_timeout = 1380;

 	/* wake-up event */
 	prop->wake_capable = 1;

 	return 0;
 }

 static int rt712_sdca_interrupt_callback(struct sdw_slave *slave,
 					struct sdw_slave_intr_status *status)
 {
 	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);
 	int ret, stat;
 	int count = 0, retry = 3;
 	unsigned int sdca_cascade, scp_sdca_stat1, scp_sdca_stat2 = 0;

 	dev_dbg(&slave->dev,
 		"%s control_port_stat=%x, sdca_cascade=%x", __func__,
 		status->control_port, status->sdca_cascade);

 	if (cancel_delayed_work_sync(&rt712->jack_detect_work)) {
 		dev_warn(&slave->dev, "%s the pending delayed_work was cancelled", __func__);
 		/* avoid the HID owner doesn't change to device */
 		if (rt712->scp_sdca_stat2)
 			scp_sdca_stat2 = rt712->scp_sdca_stat2;
 	}

 	/*
 	 * The critical section below intentionally protects a rather large piece of code.
 	 * We don't want to allow the system suspend to disable an interrupt while we are
 	 * processing it, which could be problematic given the quirky SoundWire interrupt
 	 * scheme. We do want however to prevent new workqueues from being scheduled if
 	 * the disable_irq flag was set during system suspend.
 	 */
 	mutex_lock(&rt712->disable_irq_lock);

 	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
 	if (ret < 0)
 		goto io_error;
 	rt712->scp_sdca_stat1 = ret;
 	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
 	if (ret < 0)
 		goto io_error;
 	rt712->scp_sdca_stat2 = ret;
 	if (scp_sdca_stat2)
 		rt712->scp_sdca_stat2 |= scp_sdca_stat2;

 	do {
 		/* clear flag */
 		ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
 		if (ret < 0)
 			goto io_error;
 		if (ret & SDW_SCP_SDCA_INTMASK_SDCA_0) {
 			ret = sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INT1,
 						SDW_SCP_SDCA_INTMASK_SDCA_0);
 			if (ret < 0)
 				goto io_error;
 		}
 		ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
 		if (ret < 0)
 			goto io_error;
 		if (ret & SDW_SCP_SDCA_INTMASK_SDCA_8) {
 			ret = sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INT2,
 						SDW_SCP_SDCA_INTMASK_SDCA_8);
 			if (ret < 0)
 				goto io_error;
 		}

 		/* check if flag clear or not */
 		ret = sdw_read_no_pm(rt712->slave, SDW_DP0_INT);
 		if (ret < 0)
 			goto io_error;
 		sdca_cascade = ret & SDW_DP0_SDCA_CASCADE;

 		ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
 		if (ret < 0)
 			goto io_error;
 		scp_sdca_stat1 = ret & SDW_SCP_SDCA_INTMASK_SDCA_0;

 		ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
 		if (ret < 0)
 			goto io_error;
 		scp_sdca_stat2 = ret & SDW_SCP_SDCA_INTMASK_SDCA_8;

 		stat = scp_sdca_stat1 || scp_sdca_stat2 || sdca_cascade;

 		count++;
 	} while (stat != 0 && count < retry);

 	if (stat)
 		dev_warn(&slave->dev,
 			"%s scp_sdca_stat1=0x%x, scp_sdca_stat2=0x%x\n", __func__,
 			rt712->scp_sdca_stat1, rt712->scp_sdca_stat2);

 	if (status->sdca_cascade && !rt712->disable_irq)
 		mod_delayed_work(system_power_efficient_wq,
 			&rt712->jack_detect_work, msecs_to_jiffies(30));

 	mutex_unlock(&rt712->disable_irq_lock);

 	return 0;

 io_error:
 	mutex_unlock(&rt712->disable_irq_lock);
 	pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
 	return ret;
 }

 static const struct sdw_slave_ops rt712_sdca_slave_ops = {
 	.read_prop = rt712_sdca_read_prop,
 	.interrupt_callback = rt712_sdca_interrupt_callback,
 	.update_status = rt712_sdca_update_status,
 };

 static int rt712_sdca_sdw_probe(struct sdw_slave *slave,
 				const struct sdw_device_id *id)
 {
 	struct regmap *regmap, *mbq_regmap;

 	/* Regmap Initialization */
 	mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt712_sdca_mbq_regmap);
 	if (IS_ERR(mbq_regmap))
 		return PTR_ERR(mbq_regmap);

 	regmap = devm_regmap_init_sdw(slave, &rt712_sdca_regmap);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);

 	return rt712_sdca_init(&slave->dev, regmap, mbq_regmap, slave);
 }

 static int rt712_sdca_sdw_remove(struct sdw_slave *slave)
 {
 	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);

 	if (rt712->hw_init) {
 		cancel_delayed_work_sync(&rt712->jack_detect_work);
 		cancel_delayed_work_sync(&rt712->jack_btn_check_work);
 	}

 	pm_runtime_disable(&slave->dev);

 	mutex_destroy(&rt712->calibrate_mutex);
 	mutex_destroy(&rt712->disable_irq_lock);

 	return 0;
 }

 static const struct sdw_device_id rt712_sdca_id[] = {
 	SDW_SLAVE_ENTRY_EXT(0x025d, 0x712, 0x3, 0x1, 0),
 	SDW_SLAVE_ENTRY_EXT(0x025d, 0x713, 0x3, 0x1, 0),
 	SDW_SLAVE_ENTRY_EXT(0x025d, 0x716, 0x3, 0x1, 0),
 	SDW_SLAVE_ENTRY_EXT(0x025d, 0x717, 0x3, 0x1, 0),
 	{},
 };
 MODULE_DEVICE_TABLE(sdw, rt712_sdca_id);

 static int __maybe_unused rt712_sdca_dev_suspend(struct device *dev)
 {
 	struct rt712_sdca_priv *rt712 = dev_get_drvdata(dev);

 	if (!rt712->hw_init)
 		return 0;

 	cancel_delayed_work_sync(&rt712->jack_detect_work);
 	cancel_delayed_work_sync(&rt712->jack_btn_check_work);

 	regcache_cache_only(rt712->regmap, true);
 	regcache_cache_only(rt712->mbq_regmap, true);

 	return 0;
 }

 static int __maybe_unused rt712_sdca_dev_system_suspend(struct device *dev)
 {
 	struct rt712_sdca_priv *rt712_sdca = dev_get_drvdata(dev);
 	struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	int ret1, ret2;

 	if (!rt712_sdca->hw_init)
 		return 0;

 	/*
 	 * prevent new interrupts from being handled after the
 	 * deferred work completes and before the parent disables
 	 * interrupts on the link
 	 */
 	mutex_lock(&rt712_sdca->disable_irq_lock);
 	rt712_sdca->disable_irq = true;
 	ret1 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK1,
 				SDW_SCP_SDCA_INTMASK_SDCA_0, 0);
 	ret2 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK2,
 				SDW_SCP_SDCA_INTMASK_SDCA_8, 0);
 	mutex_unlock(&rt712_sdca->disable_irq_lock);

 	if (ret1 < 0 || ret2 < 0) {
 		/* log but don't prevent suspend from happening */
 		dev_dbg(&slave->dev, "%s: could not disable SDCA interrupts\n:", __func__);
 	}

 	return rt712_sdca_dev_suspend(dev);
 }

 #define RT712_PROBE_TIMEOUT 5000

 static int __maybe_unused rt712_sdca_dev_resume(struct device *dev)
 {
 	struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	struct rt712_sdca_priv *rt712 = dev_get_drvdata(dev);
 	unsigned long time;

 	if (!rt712->first_hw_init)
 		return 0;

 	if (!slave->unattach_request) {
 		mutex_lock(&rt712->disable_irq_lock);
 		if (rt712->disable_irq == true) {

 			sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK1, SDW_SCP_SDCA_INTMASK_SDCA_0);
 			sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK2, SDW_SCP_SDCA_INTMASK_SDCA_8);
 			rt712->disable_irq = false;
 		}
 		mutex_unlock(&rt712->disable_irq_lock);
 		goto regmap_sync;
 	}

 	time = wait_for_completion_timeout(&slave->initialization_complete,
 				msecs_to_jiffies(RT712_PROBE_TIMEOUT));
 	if (!time) {
 		dev_err(&slave->dev, "%s: Initialization not complete, timed out\n", __func__);
 		sdw_show_ping_status(slave->bus, true);

 		return -ETIMEDOUT;
 	}

 regmap_sync:
 	slave->unattach_request = 0;
 	regcache_cache_only(rt712->regmap, false);
 	regcache_sync(rt712->regmap);
 	regcache_cache_only(rt712->mbq_regmap, false);
 	regcache_sync(rt712->mbq_regmap);
 	return 0;
 }

 static const struct dev_pm_ops rt712_sdca_pm = {
 	SET_SYSTEM_SLEEP_PM_OPS(rt712_sdca_dev_system_suspend, rt712_sdca_dev_resume)
 	SET_RUNTIME_PM_OPS(rt712_sdca_dev_suspend, rt712_sdca_dev_resume, NULL)
 };

 static struct sdw_driver rt712_sdca_sdw_driver = {
 	.driver = {
 		.name = "rt712-sdca",
 		.pm = &rt712_sdca_pm,
 	},
 	.probe = rt712_sdca_sdw_probe,
 	.remove = rt712_sdca_sdw_remove,
 	.ops = &rt712_sdca_slave_ops,
 	.id_table = rt712_sdca_id,
 };
 module_sdw_driver(rt712_sdca_sdw_driver);

 MODULE_DESCRIPTION("ASoC RT712 SDCA SDW driver");
 MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	//
	// rt712-sdca-sdw.c -- rt712 SDCA ALSA SoC audio driver
	//
	// Copyright(c) 2023 Realtek Semiconductor Corp.
	//
	//

	#include <linux/delay.h>
	#include <linux/device.h>
	#include <linux/mod_devicetable.h>
	#include <linux/module.h>
	#include <linux/pm_runtime.h>
	#include <linux/soundwire/sdw_registers.h>
	#include "rt712-sdca.h"
	#include "rt712-sdca-sdw.h"

	static bool rt712_sdca_readable_register(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case 0x201a ... 0x201f:
	case 0x2029 ... 0x202a:
	case 0x202d ... 0x2034:
	case 0x2230 ... 0x2232:
	case 0x2f01 ... 0x2f0a:
	case 0x2f35 ... 0x2f36:
	case 0x2f50:
	case 0x2f54:
	case 0x2f58 ... 0x2f5d:
	case 0x3201:
	case 0x320c:
	case 0x3301 ... 0x3303:
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_SELECTED_MODE, 0):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_DETECTED_MODE, 0):
	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
	SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case RT712_BUF_ADDR_HID1 ... RT712_BUF_ADDR_HID2:
	return true;
	default:
	return false;
	}
	}

	static bool rt712_sdca_volatile_register(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case 0x201b:
	case 0x201c:
	case 0x201d:
	case 0x201f:
	case 0x202d ... 0x202f:
	case 0x2230:
	case 0x2f01:
	case 0x2f35:
	case 0x320c:
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_GE49, RT712_SDCA_CTL_DETECTED_MODE, 0):
	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
	SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT_HID01, RT712_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_HID, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT0, RT712_SDCA_CTL_FUNC_STATUS, 0):
	case RT712_BUF_ADDR_HID1 ... RT712_BUF_ADDR_HID2:
	return true;
	default:
	return false;
	}
	}

	static bool rt712_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case 0x2000000 ... 0x200008e:
	case 0x5300000 ... 0x530000e:
	case 0x5400000 ... 0x540000e:
	case 0x5600000 ... 0x5600008:
	case 0x5700000 ... 0x570000d:
	case 0x5800000 ... 0x5800021:
	case 0x5900000 ... 0x5900028:
	case 0x5a00000 ... 0x5a00009:
	case 0x5b00000 ... 0x5b00051:
	case 0x5c00000 ... 0x5c0009a:
	case 0x5d00000 ... 0x5d00009:
	case 0x5f00000 ... 0x5f00030:
	case 0x6100000 ... 0x61000f1:
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU05, RT712_SDCA_CTL_FU_VOLUME, CH_01):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU05, RT712_SDCA_CTL_FU_VOLUME, CH_02):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU0F, RT712_SDCA_CTL_FU_VOLUME, CH_01):
	case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT712_SDCA_ENT_USER_FU0F, RT712_SDCA_CTL_FU_VOLUME, CH_02):
	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT_USER_FU06, RT712_SDCA_CTL_FU_VOLUME, CH_01):
	case SDW_SDCA_CTL(FUNC_NUM_AMP, RT712_SDCA_ENT_USER_FU06, RT712_SDCA_CTL_FU_VOLUME, CH_02):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_01):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_02):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_03):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_USER_FU1E, RT712_SDCA_CTL_FU_VOLUME, CH_04):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_01):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_02):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_03):
	case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT712_SDCA_ENT_PLATFORM_FU15, RT712_SDCA_CTL_FU_CH_GAIN, CH_04):
	return true;
	default:
	return false;
	}
	}

	static bool rt712_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
	{
	switch (reg) {
	case 0x2000000:
	case 0x200001a:
	case 0x2000020:
	case 0x2000024:
	case 0x2000030:
	case 0x2000046:
	case 0x200008a:
	case 0x5800000:
	case 0x5800001:
	case 0x6100008:
	return true;
	default:
	return false;
	}
	}

	static const struct regmap_config rt712_sdca_regmap = {
	.reg_bits = 32,
	.val_bits = 8,
	.readable_reg = rt712_sdca_readable_register,
	.volatile_reg = rt712_sdca_volatile_register,
	.max_register = 0x44ffffff,
	.reg_defaults = rt712_sdca_reg_defaults,
	.num_reg_defaults = ARRAY_SIZE(rt712_sdca_reg_defaults),
	.cache_type = REGCACHE_MAPLE,
	.use_single_read = true,
	.use_single_write = true,
	};

	static const struct regmap_config rt712_sdca_mbq_regmap = {
	.name = "sdw-mbq",
	.reg_bits = 32,
	.val_bits = 16,
	.readable_reg = rt712_sdca_mbq_readable_register,
	.volatile_reg = rt712_sdca_mbq_volatile_register,
	.max_register = 0x41000312,
	.reg_defaults = rt712_sdca_mbq_defaults,
	.num_reg_defaults = ARRAY_SIZE(rt712_sdca_mbq_defaults),
	.cache_type = REGCACHE_MAPLE,
	.use_single_read = true,
	.use_single_write = true,
	};

	static int rt712_sdca_update_status(struct sdw_slave *slave,
	enum sdw_slave_status status)
	{
	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);

	if (status == SDW_SLAVE_UNATTACHED)
	rt712->hw_init = false;

	if (status == SDW_SLAVE_ATTACHED) {
	if (rt712->hs_jack) {
	/*
	* Due to the SCP_SDCA_INTMASK will be cleared by any reset, and then
	* if the device attached again, we will need to set the setting back.
	* It could avoid losing the jack detection interrupt.
	* This also could sync with the cache value as the rt712_sdca_jack_init set.
	*/
	sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INTMASK1,
	SDW_SCP_SDCA_INTMASK_SDCA_0);
	sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INTMASK2,
	SDW_SCP_SDCA_INTMASK_SDCA_8);
	}
	}

	/*
	* Perform initialization only if slave status is present and
	* hw_init flag is false
	*/
	if (rt712->hw_init \|\| status != SDW_SLAVE_ATTACHED)
	return 0;

	/* perform I/O transfers required for Slave initialization */
	return rt712_sdca_io_init(&slave->dev, slave);
	}

	static int rt712_sdca_read_prop(struct sdw_slave *slave)
	{
	struct sdw_slave_prop *prop = &slave->prop;
	int nval;
	int i, j;
	u32 bit;
	unsigned long addr;
	struct sdw_dpn_prop *dpn;

	sdw_slave_read_prop(slave);

	prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH \| SDW_SCP_INT1_PARITY;
	prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;

	prop->paging_support = true;

	/* first we need to allocate memory for set bits in port lists */
	prop->source_ports = BIT(8) \| BIT(4); /* BITMAP: 100010000 */
	prop->sink_ports = BIT(3) \| BIT(1); /* BITMAP: 00001010 */

	nval = hweight32(prop->source_ports);
	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
	sizeof(*prop->src_dpn_prop), GFP_KERNEL);
	if (!prop->src_dpn_prop)
	return -ENOMEM;

	i = 0;
	dpn = prop->src_dpn_prop;
	addr = prop->source_ports;
	for_each_set_bit(bit, &addr, 32) {
	dpn[i].num = bit;
	dpn[i].type = SDW_DPN_FULL;
	dpn[i].simple_ch_prep_sm = true;
	dpn[i].ch_prep_timeout = 10;
	i++;
	}

	/* do this again for sink now */
	nval = hweight32(prop->sink_ports);
	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
	sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
	if (!prop->sink_dpn_prop)
	return -ENOMEM;

	j = 0;
	dpn = prop->sink_dpn_prop;
	addr = prop->sink_ports;
	for_each_set_bit(bit, &addr, 32) {
	dpn[j].num = bit;
	dpn[j].type = SDW_DPN_FULL;
	dpn[j].simple_ch_prep_sm = true;
	dpn[j].ch_prep_timeout = 10;
	j++;
	}

	/* set the timeout values */
	prop->clk_stop_timeout = 1380;

	/* wake-up event */
	prop->wake_capable = 1;

	return 0;
	}

	static int rt712_sdca_interrupt_callback(struct sdw_slave *slave,
	struct sdw_slave_intr_status *status)
	{
	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);
	int ret, stat;
	int count = 0, retry = 3;
	unsigned int sdca_cascade, scp_sdca_stat1, scp_sdca_stat2 = 0;

	dev_dbg(&slave->dev,
	"%s control_port_stat=%x, sdca_cascade=%x", __func__,
	status->control_port, status->sdca_cascade);

	if (cancel_delayed_work_sync(&rt712->jack_detect_work)) {
	dev_warn(&slave->dev, "%s the pending delayed_work was cancelled", __func__);
	/* avoid the HID owner doesn't change to device */
	if (rt712->scp_sdca_stat2)
	scp_sdca_stat2 = rt712->scp_sdca_stat2;
	}

	/*
	* The critical section below intentionally protects a rather large piece of code.
	* We don't want to allow the system suspend to disable an interrupt while we are
	* processing it, which could be problematic given the quirky SoundWire interrupt
	* scheme. We do want however to prevent new workqueues from being scheduled if
	* the disable_irq flag was set during system suspend.
	*/
	mutex_lock(&rt712->disable_irq_lock);

	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
	if (ret < 0)
	goto io_error;
	rt712->scp_sdca_stat1 = ret;
	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
	if (ret < 0)
	goto io_error;
	rt712->scp_sdca_stat2 = ret;
	if (scp_sdca_stat2)
	rt712->scp_sdca_stat2 \|= scp_sdca_stat2;

	do {
	/* clear flag */
	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
	if (ret < 0)
	goto io_error;
	if (ret & SDW_SCP_SDCA_INTMASK_SDCA_0) {
	ret = sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INT1,
	SDW_SCP_SDCA_INTMASK_SDCA_0);
	if (ret < 0)
	goto io_error;
	}
	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
	if (ret < 0)
	goto io_error;
	if (ret & SDW_SCP_SDCA_INTMASK_SDCA_8) {
	ret = sdw_write_no_pm(rt712->slave, SDW_SCP_SDCA_INT2,
	SDW_SCP_SDCA_INTMASK_SDCA_8);
	if (ret < 0)
	goto io_error;
	}

	/* check if flag clear or not */
	ret = sdw_read_no_pm(rt712->slave, SDW_DP0_INT);
	if (ret < 0)
	goto io_error;
	sdca_cascade = ret & SDW_DP0_SDCA_CASCADE;

	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT1);
	if (ret < 0)
	goto io_error;
	scp_sdca_stat1 = ret & SDW_SCP_SDCA_INTMASK_SDCA_0;

	ret = sdw_read_no_pm(rt712->slave, SDW_SCP_SDCA_INT2);
	if (ret < 0)
	goto io_error;
	scp_sdca_stat2 = ret & SDW_SCP_SDCA_INTMASK_SDCA_8;

	stat = scp_sdca_stat1 \|\| scp_sdca_stat2 \|\| sdca_cascade;

	count++;
	} while (stat != 0 && count < retry);

	if (stat)
	dev_warn(&slave->dev,
	"%s scp_sdca_stat1=0x%x, scp_sdca_stat2=0x%x\n", __func__,
	rt712->scp_sdca_stat1, rt712->scp_sdca_stat2);

	if (status->sdca_cascade && !rt712->disable_irq)
	mod_delayed_work(system_power_efficient_wq,
	&rt712->jack_detect_work, msecs_to_jiffies(30));

	mutex_unlock(&rt712->disable_irq_lock);

	return 0;

	io_error:
	mutex_unlock(&rt712->disable_irq_lock);
	pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
	return ret;
	}

	static const struct sdw_slave_ops rt712_sdca_slave_ops = {
	.read_prop = rt712_sdca_read_prop,
	.interrupt_callback = rt712_sdca_interrupt_callback,
	.update_status = rt712_sdca_update_status,
	};

	static int rt712_sdca_sdw_probe(struct sdw_slave *slave,
	const struct sdw_device_id *id)
	{
	struct regmap regmap, mbq_regmap;

	/* Regmap Initialization */
	mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt712_sdca_mbq_regmap);
	if (IS_ERR(mbq_regmap))
	return PTR_ERR(mbq_regmap);

	regmap = devm_regmap_init_sdw(slave, &rt712_sdca_regmap);
	if (IS_ERR(regmap))
	return PTR_ERR(regmap);

	return rt712_sdca_init(&slave->dev, regmap, mbq_regmap, slave);
	}

	static int rt712_sdca_sdw_remove(struct sdw_slave *slave)
	{
	struct rt712_sdca_priv *rt712 = dev_get_drvdata(&slave->dev);

	if (rt712->hw_init) {
	cancel_delayed_work_sync(&rt712->jack_detect_work);
	cancel_delayed_work_sync(&rt712->jack_btn_check_work);
	}

	pm_runtime_disable(&slave->dev);

	mutex_destroy(&rt712->calibrate_mutex);
	mutex_destroy(&rt712->disable_irq_lock);

	return 0;
	}

	static const struct sdw_device_id rt712_sdca_id[] = {
	SDW_SLAVE_ENTRY_EXT(0x025d, 0x712, 0x3, 0x1, 0),
	SDW_SLAVE_ENTRY_EXT(0x025d, 0x713, 0x3, 0x1, 0),
	SDW_SLAVE_ENTRY_EXT(0x025d, 0x716, 0x3, 0x1, 0),
	SDW_SLAVE_ENTRY_EXT(0x025d, 0x717, 0x3, 0x1, 0),
	{},
	};
	MODULE_DEVICE_TABLE(sdw, rt712_sdca_id);

	static int __maybe_unused rt712_sdca_dev_suspend(struct device *dev)
	{
	struct rt712_sdca_priv *rt712 = dev_get_drvdata(dev);

	if (!rt712->hw_init)
	return 0;

	cancel_delayed_work_sync(&rt712->jack_detect_work);
	cancel_delayed_work_sync(&rt712->jack_btn_check_work);

	regcache_cache_only(rt712->regmap, true);
	regcache_cache_only(rt712->mbq_regmap, true);

	return 0;
	}

	static int __maybe_unused rt712_sdca_dev_system_suspend(struct device *dev)
	{
	struct rt712_sdca_priv *rt712_sdca = dev_get_drvdata(dev);
	struct sdw_slave *slave = dev_to_sdw_dev(dev);
	int ret1, ret2;

	if (!rt712_sdca->hw_init)
	return 0;

	/*
	* prevent new interrupts from being handled after the
	* deferred work completes and before the parent disables
	* interrupts on the link
	*/
	mutex_lock(&rt712_sdca->disable_irq_lock);
	rt712_sdca->disable_irq = true;
	ret1 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK1,
	SDW_SCP_SDCA_INTMASK_SDCA_0, 0);
	ret2 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK2,
	SDW_SCP_SDCA_INTMASK_SDCA_8, 0);
	mutex_unlock(&rt712_sdca->disable_irq_lock);

	if (ret1 < 0 \|\| ret2 < 0) {
	/* log but don't prevent suspend from happening */
	dev_dbg(&slave->dev, "%s: could not disable SDCA interrupts\n:", __func__);
	}

	return rt712_sdca_dev_suspend(dev);
	}

	#define RT712_PROBE_TIMEOUT 5000

	static int __maybe_unused rt712_sdca_dev_resume(struct device *dev)
	{
	struct sdw_slave *slave = dev_to_sdw_dev(dev);
	struct rt712_sdca_priv *rt712 = dev_get_drvdata(dev);
	unsigned long time;

	if (!rt712->first_hw_init)
	return 0;

	if (!slave->unattach_request) {
	mutex_lock(&rt712->disable_irq_lock);
	if (rt712->disable_irq == true) {

	sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK1, SDW_SCP_SDCA_INTMASK_SDCA_0);
	sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK2, SDW_SCP_SDCA_INTMASK_SDCA_8);
	rt712->disable_irq = false;
	}
	mutex_unlock(&rt712->disable_irq_lock);
	goto regmap_sync;
	}

	time = wait_for_completion_timeout(&slave->initialization_complete,
	msecs_to_jiffies(RT712_PROBE_TIMEOUT));
	if (!time) {
	dev_err(&slave->dev, "%s: Initialization not complete, timed out\n", __func__);
	sdw_show_ping_status(slave->bus, true);

	return -ETIMEDOUT;
	}

	regmap_sync:
	slave->unattach_request = 0;
	regcache_cache_only(rt712->regmap, false);
	regcache_sync(rt712->regmap);
	regcache_cache_only(rt712->mbq_regmap, false);
	regcache_sync(rt712->mbq_regmap);
	return 0;
	}

	static const struct dev_pm_ops rt712_sdca_pm = {
	SET_SYSTEM_SLEEP_PM_OPS(rt712_sdca_dev_system_suspend, rt712_sdca_dev_resume)
	SET_RUNTIME_PM_OPS(rt712_sdca_dev_suspend, rt712_sdca_dev_resume, NULL)
	};

	static struct sdw_driver rt712_sdca_sdw_driver = {
	.driver = {
	.name = "rt712-sdca",
	.pm = &rt712_sdca_pm,
	},
	.probe = rt712_sdca_sdw_probe,
	.remove = rt712_sdca_sdw_remove,
	.ops = &rt712_sdca_slave_ops,
	.id_table = rt712_sdca_id,
	};
	module_sdw_driver(rt712_sdca_sdw_driver);

	MODULE_DESCRIPTION("ASoC RT712 SDCA SDW driver");
	MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
	MODULE_LICENSE("GPL");