[linux-2.6-block.git] / drivers / soundwire / mipi_disco.c

// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
// Copyright(c) 2015-17 Intel Corporation.

/*
 * MIPI Discovery And Configuration (DisCo) Specification for SoundWire
 * specifies properties to be implemented for SoundWire Masters and Slaves.
 * The DisCo spec doesn't mandate these properties. However, SDW bus cannot
 * work without knowing these values.
 *
 * The helper functions read the Master and Slave properties. Implementers
 * of Master or Slave drivers can use any of the below three mechanisms:
 *    a) Use these APIs here as .read_prop() callback for Master and Slave
 *    b) Implement own methods and set those as .read_prop(), but invoke
 *    APIs in this file for generic read and override the values with
 *    platform specific data
 *    c) Implement ones own methods which do not use anything provided
 *    here
 */

#include <linux/device.h>
#include <linux/property.h>
#include <linux/mod_devicetable.h>
#include <linux/soundwire/sdw.h>
#include "bus.h"

/**
 * sdw_master_read_prop() - Read Master properties
 * @bus: SDW bus instance
 */
int sdw_master_read_prop(struct sdw_bus *bus)
{
	struct sdw_master_prop *prop = &bus->prop;
	struct fwnode_handle *link;
	char name[32];
	int nval, i;

	device_property_read_u32(bus->dev,
				 "mipi-sdw-sw-interface-revision",
				 &prop->revision);

	/* Find master handle */
	snprintf(name, sizeof(name),
		 "mipi-sdw-link-%d-subproperties", bus->link_id);

	link = device_get_named_child_node(bus->dev, name);
	if (!link) {
		dev_err(bus->dev, "Master node %s not found\n", name);
		return -EIO;
	}

	if (fwnode_property_read_bool(link,
				      "mipi-sdw-clock-stop-mode0-supported"))
		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE0);

	if (fwnode_property_read_bool(link,
				      "mipi-sdw-clock-stop-mode1-supported"))
		prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE1);

	fwnode_property_read_u32(link,
				 "mipi-sdw-max-clock-frequency",
				 &prop->max_clk_freq);

	nval = fwnode_property_read_u32_array(link,
			"mipi-sdw-clock-frequencies-supported", NULL, 0);
	if (nval > 0) {
		prop->num_clk_freq = nval;
		prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,
					      sizeof(*prop->clk_freq),
					      GFP_KERNEL);
		if (!prop->clk_freq)
			return -ENOMEM;

		fwnode_property_read_u32_array(link,
				"mipi-sdw-clock-frequencies-supported",
				prop->clk_freq, prop->num_clk_freq);
	}

	/*
	 * Check the frequencies supported. If FW doesn't provide max
	 * freq, then populate here by checking values.
	 */
	if (!prop->max_clk_freq && prop->clk_freq) {
		prop->max_clk_freq = prop->clk_freq[0];
		for (i = 1; i < prop->num_clk_freq; i++) {
			if (prop->clk_freq[i] > prop->max_clk_freq)
				prop->max_clk_freq = prop->clk_freq[i];
		}
	}

	nval = fwnode_property_read_u32_array(link,
			"mipi-sdw-supported-clock-gears", NULL, 0);
	if (nval > 0) {
		prop->num_clk_gears = nval;
		prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
					       sizeof(*prop->clk_gears),
					       GFP_KERNEL);
		if (!prop->clk_gears)
			return -ENOMEM;

		fwnode_property_read_u32_array(link,
					       "mipi-sdw-supported-clock-gears",
					       prop->clk_gears,
					       prop->num_clk_gears);
	}

	fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",
				 &prop->default_frame_rate);

	fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",
				 &prop->default_row);

	fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",
				 &prop->default_col);

	prop->dynamic_frame =  fwnode_property_read_bool(link,
			"mipi-sdw-dynamic-frame-shape");

	fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",
				 &prop->err_threshold);

	return 0;
}
EXPORT_SYMBOL(sdw_master_read_prop);

static int sdw_slave_read_dp0(struct sdw_slave *slave,
			      struct fwnode_handle *port,
			      struct sdw_dp0_prop *dp0)
{
	int nval;

	fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",
				 &dp0->max_word);

	fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",
				 &dp0->min_word);

	nval = fwnode_property_read_u32_array(port,
			"mipi-sdw-port-wordlength-configs", NULL, 0);
	if (nval > 0) {

		dp0->num_words = nval;
		dp0->words = devm_kcalloc(&slave->dev,
					  dp0->num_words, sizeof(*dp0->words),
					  GFP_KERNEL);
		if (!dp0->words)
			return -ENOMEM;

		fwnode_property_read_u32_array(port,
				"mipi-sdw-port-wordlength-configs",
				dp0->words, dp0->num_words);
	}

	dp0->BRA_flow_controlled = fwnode_property_read_bool(port,
				"mipi-sdw-bra-flow-controlled");

	dp0->simple_ch_prep_sm = fwnode_property_read_bool(port,
				"mipi-sdw-simplified-channel-prepare-sm");

	dp0->imp_def_interrupts = fwnode_property_read_bool(port,
				"mipi-sdw-imp-def-dp0-interrupts-supported");

	return 0;
}

static int sdw_slave_read_dpn(struct sdw_slave *slave,
			      struct sdw_dpn_prop *dpn, int count, int ports,
			      char *type)
{
	struct fwnode_handle *node;
	u32 bit, i = 0;
	int nval;
	unsigned long addr;
	char name[40];

	addr = ports;
	/* valid ports are 1 to 14 so apply mask */
	addr &= GENMASK(14, 1);

	for_each_set_bit(bit, &addr, 32) {
		snprintf(name, sizeof(name),
			 "mipi-sdw-dp-%d-%s-subproperties", bit, type);

		dpn[i].num = bit;

		node = device_get_named_child_node(&slave->dev, name);
		if (!node) {
			dev_err(&slave->dev, "%s dpN not found\n", name);
			return -EIO;
		}

		fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",
					 &dpn[i].max_word);
		fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",
					 &dpn[i].min_word);

		nval = fwnode_property_read_u32_array(node,
				"mipi-sdw-port-wordlength-configs", NULL, 0);
		if (nval > 0) {
			dpn[i].num_words = nval;
			dpn[i].words = devm_kcalloc(&slave->dev,
						    dpn[i].num_words,
						    sizeof(*dpn[i].words),
						    GFP_KERNEL);
			if (!dpn[i].words)
				return -ENOMEM;

			fwnode_property_read_u32_array(node,
					"mipi-sdw-port-wordlength-configs",
					dpn[i].words, dpn[i].num_words);
		}

		fwnode_property_read_u32(node, "mipi-sdw-data-port-type",
					 &dpn[i].type);

		fwnode_property_read_u32(node,
					 "mipi-sdw-max-grouping-supported",
					 &dpn[i].max_grouping);

		dpn[i].simple_ch_prep_sm = fwnode_property_read_bool(node,
				"mipi-sdw-simplified-channelprepare-sm");

		fwnode_property_read_u32(node,
					 "mipi-sdw-port-channelprepare-timeout",
					 &dpn[i].ch_prep_timeout);

		fwnode_property_read_u32(node,
				"mipi-sdw-imp-def-dpn-interrupts-supported",
				&dpn[i].imp_def_interrupts);

		fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",
					 &dpn[i].min_ch);

		fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",
					 &dpn[i].max_ch);

		nval = fwnode_property_read_u32_array(node,
				"mipi-sdw-channel-number-list", NULL, 0);
		if (nval > 0) {
			dpn[i].num_ch = nval;
			dpn[i].ch = devm_kcalloc(&slave->dev, dpn[i].num_ch,
						 sizeof(*dpn[i].ch),
						 GFP_KERNEL);
			if (!dpn[i].ch)
				return -ENOMEM;

			fwnode_property_read_u32_array(node,
					"mipi-sdw-channel-number-list",
					dpn[i].ch, dpn[i].num_ch);
		}

		nval = fwnode_property_read_u32_array(node,
				"mipi-sdw-channel-combination-list", NULL, 0);
		if (nval > 0) {
			dpn[i].num_ch_combinations = nval;
			dpn[i].ch_combinations = devm_kcalloc(&slave->dev,
					dpn[i].num_ch_combinations,
					sizeof(*dpn[i].ch_combinations),
					GFP_KERNEL);
			if (!dpn[i].ch_combinations)
				return -ENOMEM;

			fwnode_property_read_u32_array(node,
					"mipi-sdw-channel-combination-list",
					dpn[i].ch_combinations,
					dpn[i].num_ch_combinations);
		}

		fwnode_property_read_u32(node,
				"mipi-sdw-modes-supported", &dpn[i].modes);

		fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",
					 &dpn[i].max_async_buffer);

		dpn[i].block_pack_mode = fwnode_property_read_bool(node,
				"mipi-sdw-block-packing-mode");

		fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",
					 &dpn[i].port_encoding);

		/* TODO: Read audio mode */

		i++;
	}

	return 0;
}

/**
 * sdw_slave_read_prop() - Read Slave properties
 * @slave: SDW Slave
 */
int sdw_slave_read_prop(struct sdw_slave *slave)
{
	struct sdw_slave_prop *prop = &slave->prop;
	struct device *dev = &slave->dev;
	struct fwnode_handle *port;
	int num_of_ports, nval, i, dp0 = 0;

	device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",
				 &prop->mipi_revision);

	prop->wake_capable = device_property_read_bool(dev,
				"mipi-sdw-wake-up-unavailable");
	prop->wake_capable = !prop->wake_capable;

	prop->test_mode_capable = device_property_read_bool(dev,
				"mipi-sdw-test-mode-supported");

	prop->clk_stop_mode1 = false;
	if (device_property_read_bool(dev,
				"mipi-sdw-clock-stop-mode1-supported"))
		prop->clk_stop_mode1 = true;

	prop->simple_clk_stop_capable = device_property_read_bool(dev,
			"mipi-sdw-simplified-clockstopprepare-sm-supported");

	device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",
				 &prop->clk_stop_timeout);

	device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",
				 &prop->ch_prep_timeout);

	device_property_read_u32(dev,
			"mipi-sdw-clockstopprepare-hard-reset-behavior",
			&prop->reset_behave);

	prop->high_PHY_capable = device_property_read_bool(dev,
			"mipi-sdw-highPHY-capable");

	prop->paging_support = device_property_read_bool(dev,
			"mipi-sdw-paging-support");

	prop->bank_delay_support = device_property_read_bool(dev,
			"mipi-sdw-bank-delay-support");

	device_property_read_u32(dev,
			"mipi-sdw-port15-read-behavior", &prop->p15_behave);

	device_property_read_u32(dev, "mipi-sdw-master-count",
				 &prop->master_count);

	device_property_read_u32(dev, "mipi-sdw-source-port-list",
				 &prop->source_ports);

	device_property_read_u32(dev, "mipi-sdw-sink-port-list",
				 &prop->sink_ports);

	/* Read dp0 properties */
	port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");
	if (!port) {
		dev_dbg(dev, "DP0 node not found!!\n");
	} else {
		prop->dp0_prop = devm_kzalloc(&slave->dev,
					      sizeof(*prop->dp0_prop),
					      GFP_KERNEL);
		if (!prop->dp0_prop)
			return -ENOMEM;

		sdw_slave_read_dp0(slave, port, prop->dp0_prop);
		dp0 = 1;
	}

	/*
	 * Based on each DPn port, get source and sink dpn properties.
	 * Also, some ports can operate as both source or sink.
	 */

	/* Allocate memory for set bits in port lists */
	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;

	/* Read dpn properties for source port(s) */
	sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,
			   prop->source_ports, "source");

	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;

	/* Read dpn properties for sink port(s) */
	sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,
			   prop->sink_ports, "sink");

	/* some ports are bidirectional so check total ports by ORing */
	nval = prop->source_ports | prop->sink_ports;
	num_of_ports = hweight32(nval) + dp0; /* add DP0 */

	/* Allocate port_ready based on num_of_ports */
	slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
					 sizeof(*slave->port_ready),
					 GFP_KERNEL);
	if (!slave->port_ready)
		return -ENOMEM;

	/* Initialize completion */
	for (i = 0; i < num_of_ports; i++)
		init_completion(&slave->port_ready[i]);

	return 0;
}
EXPORT_SYMBOL(sdw_slave_read_prop);
Commit	Line	Data
56d4fe31 VK	1	// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
	2	// Copyright(c) 2015-17 Intel Corporation.
	3
	4	/*
	5	* MIPI Discovery And Configuration (DisCo) Specification for SoundWire
	6	* specifies properties to be implemented for SoundWire Masters and Slaves.
	7	* The DisCo spec doesn't mandate these properties. However, SDW bus cannot
	8	* work without knowing these values.
	9	*
	10	* The helper functions read the Master and Slave properties. Implementers
	11	* of Master or Slave drivers can use any of the below three mechanisms:
	12	* a) Use these APIs here as .read_prop() callback for Master and Slave
	13	* b) Implement own methods and set those as .read_prop(), but invoke
	14	* APIs in this file for generic read and override the values with
	15	* platform specific data
	16	* c) Implement ones own methods which do not use anything provided
	17	* here
	18	*/
	19
	20	#include <linux/device.h>
	21	#include <linux/property.h>
	22	#include <linux/mod_devicetable.h>
	23	#include <linux/soundwire/sdw.h>
	24	#include "bus.h"
	25
	26	/**
	27	* sdw_master_read_prop() - Read Master properties
	28	* @bus: SDW bus instance
	29	*/
	30	int sdw_master_read_prop(struct sdw_bus *bus)
	31	{
	32	struct sdw_master_prop *prop = &bus->prop;
	33	struct fwnode_handle *link;
	34	char name[32];
	35	int nval, i;
	36
	37	device_property_read_u32(bus->dev,
31dba312 PLB	38	"mipi-sdw-sw-interface-revision",
31dba312 PLB	39	&prop->revision);
56d4fe31 VK	40
	41	/* Find master handle */
	42	snprintf(name, sizeof(name),
eadc0049	43	"mipi-sdw-link-%d-subproperties", bus->link_id);
56d4fe31 VK	44
	45	link = device_get_named_child_node(bus->dev, name);
	46	if (!link) {
	47	dev_err(bus->dev, "Master node %s not found\n", name);
	48	return -EIO;
	49	}
	50
	51	if (fwnode_property_read_bool(link,
00910f3c	52	"mipi-sdw-clock-stop-mode0-supported"))
53d2e9c3	53	prop->clk_stop_modes \|= BIT(SDW_CLK_STOP_MODE0);
56d4fe31 VK	54
56d4fe31 VK	55	if (fwnode_property_read_bool(link,
00910f3c	56	"mipi-sdw-clock-stop-mode1-supported"))
53d2e9c3	57	prop->clk_stop_modes \|= BIT(SDW_CLK_STOP_MODE1);
56d4fe31 VK	58
56d4fe31 VK	59	fwnode_property_read_u32(link,
31dba312	60	"mipi-sdw-max-clock-frequency",
3424305b	61	&prop->max_clk_freq);
56d4fe31 VK	62
	63	nval = fwnode_property_read_u32_array(link,
	64	"mipi-sdw-clock-frequencies-supported", NULL, 0);
	65	if (nval > 0) {
3424305b PLB	66	prop->num_clk_freq = nval;
	67	prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,
	68	sizeof(*prop->clk_freq),
	69	GFP_KERNEL);
	70	if (!prop->clk_freq)
56d4fe31 VK	71	return -ENOMEM;
	72
	73	fwnode_property_read_u32_array(link,
	74	"mipi-sdw-clock-frequencies-supported",
3424305b	75	prop->clk_freq, prop->num_clk_freq);
56d4fe31 VK	76	}
	77
	78	/*
	79	* Check the frequencies supported. If FW doesn't provide max
	80	* freq, then populate here by checking values.
	81	*/
3424305b PLB	82	if (!prop->max_clk_freq && prop->clk_freq) {
	83	prop->max_clk_freq = prop->clk_freq[0];
	84	for (i = 1; i < prop->num_clk_freq; i++) {
	85	if (prop->clk_freq[i] > prop->max_clk_freq)
	86	prop->max_clk_freq = prop->clk_freq[i];
56d4fe31 VK	87	}
	88	}
	89
	90	nval = fwnode_property_read_u32_array(link,
	91	"mipi-sdw-supported-clock-gears", NULL, 0);
	92	if (nval > 0) {
56d4fe31 VK	93	prop->num_clk_gears = nval;
56d4fe31 VK	94	prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
31dba312 PLB	95	sizeof(*prop->clk_gears),
31dba312 PLB	96	GFP_KERNEL);
56d4fe31 VK	97	if (!prop->clk_gears)
	98	return -ENOMEM;
	99
	100	fwnode_property_read_u32_array(link,
31dba312 PLB	101	"mipi-sdw-supported-clock-gears",
	102	prop->clk_gears,
	103	prop->num_clk_gears);
56d4fe31 VK	104	}
	105
	106	fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",
31dba312	107	&prop->default_frame_rate);
56d4fe31 VK	108
56d4fe31 VK	109	fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",
31dba312	110	&prop->default_row);
56d4fe31 VK	111
56d4fe31 VK	112	fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",
31dba312	113	&prop->default_col);
56d4fe31 VK	114
	115	prop->dynamic_frame = fwnode_property_read_bool(link,
	116	"mipi-sdw-dynamic-frame-shape");
	117
	118	fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",
31dba312	119	&prop->err_threshold);
56d4fe31 VK	120
	121	return 0;
	122	}
	123	EXPORT_SYMBOL(sdw_master_read_prop);
	124
	125	static int sdw_slave_read_dp0(struct sdw_slave *slave,
31dba312 PLB	126	struct fwnode_handle *port,
31dba312 PLB	127	struct sdw_dp0_prop *dp0)
56d4fe31 VK	128	{
	129	int nval;
	130
	131	fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",
31dba312	132	&dp0->max_word);
56d4fe31 VK	133
56d4fe31 VK	134	fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",
31dba312	135	&dp0->min_word);
56d4fe31 VK	136
	137	nval = fwnode_property_read_u32_array(port,
	138	"mipi-sdw-port-wordlength-configs", NULL, 0);
	139	if (nval > 0) {
	140
	141	dp0->num_words = nval;
	142	dp0->words = devm_kcalloc(&slave->dev,
31dba312 PLB	143	dp0->num_words, sizeof(*dp0->words),
31dba312 PLB	144	GFP_KERNEL);
56d4fe31 VK	145	if (!dp0->words)
	146	return -ENOMEM;
	147
	148	fwnode_property_read_u32_array(port,
	149	"mipi-sdw-port-wordlength-configs",
	150	dp0->words, dp0->num_words);
	151	}
	152
8acbbfec	153	dp0->BRA_flow_controlled = fwnode_property_read_bool(port,
31dba312	154	"mipi-sdw-bra-flow-controlled");
56d4fe31	155
31dba312 PLB	156	dp0->simple_ch_prep_sm = fwnode_property_read_bool(port,
31dba312 PLB	157	"mipi-sdw-simplified-channel-prepare-sm");
56d4fe31	158
8acbbfec	159	dp0->imp_def_interrupts = fwnode_property_read_bool(port,
31dba312	160	"mipi-sdw-imp-def-dp0-interrupts-supported");
56d4fe31 VK	161
	162	return 0;
	163	}
	164
	165	static int sdw_slave_read_dpn(struct sdw_slave *slave,
31dba312 PLB	166	struct sdw_dpn_prop *dpn, int count, int ports,
31dba312 PLB	167	char *type)
56d4fe31 VK	168	{
	169	struct fwnode_handle *node;
	170	u32 bit, i = 0;
	171	int nval;
	172	unsigned long addr;
	173	char name[40];
	174
	175	addr = ports;
	176	/* valid ports are 1 to 14 so apply mask */
	177	addr &= GENMASK(14, 1);
	178
	179	for_each_set_bit(bit, &addr, 32) {
	180	snprintf(name, sizeof(name),
31dba312	181	"mipi-sdw-dp-%d-%s-subproperties", bit, type);
56d4fe31 VK	182
	183	dpn[i].num = bit;
	184
	185	node = device_get_named_child_node(&slave->dev, name);
	186	if (!node) {
	187	dev_err(&slave->dev, "%s dpN not found\n", name);
	188	return -EIO;
	189	}
	190
	191	fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",
31dba312	192	&dpn[i].max_word);
56d4fe31	193	fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",
31dba312	194	&dpn[i].min_word);
56d4fe31 VK	195
	196	nval = fwnode_property_read_u32_array(node,
	197	"mipi-sdw-port-wordlength-configs", NULL, 0);
	198	if (nval > 0) {
56d4fe31 VK	199	dpn[i].num_words = nval;
56d4fe31 VK	200	dpn[i].words = devm_kcalloc(&slave->dev,
31dba312 PLB	201	dpn[i].num_words,
	202	sizeof(*dpn[i].words),
	203	GFP_KERNEL);
56d4fe31 VK	204	if (!dpn[i].words)
	205	return -ENOMEM;
	206
	207	fwnode_property_read_u32_array(node,
	208	"mipi-sdw-port-wordlength-configs",
	209	dpn[i].words, dpn[i].num_words);
	210	}
	211
	212	fwnode_property_read_u32(node, "mipi-sdw-data-port-type",
31dba312	213	&dpn[i].type);
56d4fe31 VK	214
56d4fe31 VK	215	fwnode_property_read_u32(node,
31dba312 PLB	216	"mipi-sdw-max-grouping-supported",
31dba312 PLB	217	&dpn[i].max_grouping);
56d4fe31 VK	218
	219	dpn[i].simple_ch_prep_sm = fwnode_property_read_bool(node,
	220	"mipi-sdw-simplified-channelprepare-sm");
	221
	222	fwnode_property_read_u32(node,
31dba312 PLB	223	"mipi-sdw-port-channelprepare-timeout",
31dba312 PLB	224	&dpn[i].ch_prep_timeout);
56d4fe31 VK	225
	226	fwnode_property_read_u32(node,
	227	"mipi-sdw-imp-def-dpn-interrupts-supported",
8acbbfec	228	&dpn[i].imp_def_interrupts);
56d4fe31 VK	229
56d4fe31 VK	230	fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",
31dba312	231	&dpn[i].min_ch);
56d4fe31 VK	232
56d4fe31 VK	233	fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",
31dba312	234	&dpn[i].max_ch);
56d4fe31 VK	235
	236	nval = fwnode_property_read_u32_array(node,
	237	"mipi-sdw-channel-number-list", NULL, 0);
	238	if (nval > 0) {
56d4fe31 VK	239	dpn[i].num_ch = nval;
56d4fe31 VK	240	dpn[i].ch = devm_kcalloc(&slave->dev, dpn[i].num_ch,
31dba312 PLB	241	sizeof(*dpn[i].ch),
31dba312 PLB	242	GFP_KERNEL);
56d4fe31 VK	243	if (!dpn[i].ch)
	244	return -ENOMEM;
	245
	246	fwnode_property_read_u32_array(node,
	247	"mipi-sdw-channel-number-list",
	248	dpn[i].ch, dpn[i].num_ch);
	249	}
	250
	251	nval = fwnode_property_read_u32_array(node,
	252	"mipi-sdw-channel-combination-list", NULL, 0);
	253	if (nval > 0) {
56d4fe31 VK	254	dpn[i].num_ch_combinations = nval;
	255	dpn[i].ch_combinations = devm_kcalloc(&slave->dev,
	256	dpn[i].num_ch_combinations,
	257	sizeof(*dpn[i].ch_combinations),
	258	GFP_KERNEL);
	259	if (!dpn[i].ch_combinations)
	260	return -ENOMEM;
	261
	262	fwnode_property_read_u32_array(node,
	263	"mipi-sdw-channel-combination-list",
	264	dpn[i].ch_combinations,
	265	dpn[i].num_ch_combinations);
	266	}
	267
	268	fwnode_property_read_u32(node,
	269	"mipi-sdw-modes-supported", &dpn[i].modes);
	270
	271	fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",
31dba312	272	&dpn[i].max_async_buffer);
56d4fe31 VK	273
	274	dpn[i].block_pack_mode = fwnode_property_read_bool(node,
	275	"mipi-sdw-block-packing-mode");
	276
	277	fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",
31dba312	278	&dpn[i].port_encoding);
56d4fe31 VK	279
	280	/* TODO: Read audio mode */
	281
	282	i++;
	283	}
	284
	285	return 0;
	286	}
	287
	288	/**
	289	* sdw_slave_read_prop() - Read Slave properties
	290	* @slave: SDW Slave
	291	*/
	292	int sdw_slave_read_prop(struct sdw_slave *slave)
	293	{
	294	struct sdw_slave_prop *prop = &slave->prop;
	295	struct device *dev = &slave->dev;
	296	struct fwnode_handle *port;
	297	int num_of_ports, nval, i, dp0 = 0;
	298
	299	device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",
31dba312	300	&prop->mipi_revision);
56d4fe31 VK	301
	302	prop->wake_capable = device_property_read_bool(dev,
	303	"mipi-sdw-wake-up-unavailable");
	304	prop->wake_capable = !prop->wake_capable;
	305
	306	prop->test_mode_capable = device_property_read_bool(dev,
	307	"mipi-sdw-test-mode-supported");
	308
	309	prop->clk_stop_mode1 = false;
	310	if (device_property_read_bool(dev,
	311	"mipi-sdw-clock-stop-mode1-supported"))
	312	prop->clk_stop_mode1 = true;
	313
	314	prop->simple_clk_stop_capable = device_property_read_bool(dev,
	315	"mipi-sdw-simplified-clockstopprepare-sm-supported");
	316
	317	device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",
31dba312	318	&prop->clk_stop_timeout);
56d4fe31 VK	319
56d4fe31 VK	320	device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",
31dba312	321	&prop->ch_prep_timeout);
56d4fe31 VK	322
	323	device_property_read_u32(dev,
	324	"mipi-sdw-clockstopprepare-hard-reset-behavior",
	325	&prop->reset_behave);
	326
	327	prop->high_PHY_capable = device_property_read_bool(dev,
	328	"mipi-sdw-highPHY-capable");
	329
	330	prop->paging_support = device_property_read_bool(dev,
	331	"mipi-sdw-paging-support");
	332
	333	prop->bank_delay_support = device_property_read_bool(dev,
	334	"mipi-sdw-bank-delay-support");
	335
	336	device_property_read_u32(dev,
	337	"mipi-sdw-port15-read-behavior", &prop->p15_behave);
	338
	339	device_property_read_u32(dev, "mipi-sdw-master-count",
31dba312	340	&prop->master_count);
56d4fe31 VK	341
56d4fe31 VK	342	device_property_read_u32(dev, "mipi-sdw-source-port-list",
31dba312	343	&prop->source_ports);
56d4fe31 VK	344
56d4fe31 VK	345	device_property_read_u32(dev, "mipi-sdw-sink-port-list",
31dba312	346	&prop->sink_ports);
56d4fe31 VK	347
	348	/* Read dp0 properties */
	349	port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");
	350	if (!port) {
	351	dev_dbg(dev, "DP0 node not found!!\n");
	352	} else {
56d4fe31	353	prop->dp0_prop = devm_kzalloc(&slave->dev,
31dba312 PLB	354	sizeof(*prop->dp0_prop),
31dba312 PLB	355	GFP_KERNEL);
56d4fe31 VK	356	if (!prop->dp0_prop)
	357	return -ENOMEM;
	358
	359	sdw_slave_read_dp0(slave, port, prop->dp0_prop);
	360	dp0 = 1;
	361	}
	362
	363	/*
	364	* Based on each DPn port, get source and sink dpn properties.
	365	* Also, some ports can operate as both source or sink.
	366	*/
	367
	368	/* Allocate memory for set bits in port lists */
	369	nval = hweight32(prop->source_ports);
	370	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
31dba312 PLB	371	sizeof(*prop->src_dpn_prop),
31dba312 PLB	372	GFP_KERNEL);
56d4fe31 VK	373	if (!prop->src_dpn_prop)
	374	return -ENOMEM;
	375
	376	/* Read dpn properties for source port(s) */
	377	sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,
31dba312	378	prop->source_ports, "source");
56d4fe31 VK	379
	380	nval = hweight32(prop->sink_ports);
	381	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
31dba312 PLB	382	sizeof(*prop->sink_dpn_prop),
31dba312 PLB	383	GFP_KERNEL);
56d4fe31 VK	384	if (!prop->sink_dpn_prop)
	385	return -ENOMEM;
	386
	387	/* Read dpn properties for sink port(s) */
	388	sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,
31dba312	389	prop->sink_ports, "sink");
56d4fe31 VK	390
	391	/* some ports are bidirectional so check total ports by ORing */
	392	nval = prop->source_ports \| prop->sink_ports;
	393	num_of_ports = hweight32(nval) + dp0; /* add DP0 */
	394
	395	/* Allocate port_ready based on num_of_ports */
	396	slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
31dba312 PLB	397	sizeof(*slave->port_ready),
31dba312 PLB	398	GFP_KERNEL);
56d4fe31 VK	399	if (!slave->port_ready)
	400	return -ENOMEM;
	401
	402	/* Initialize completion */
	403	for (i = 0; i < num_of_ports; i++)
	404	init_completion(&slave->port_ready[i]);
	405
	406	return 0;
	407	}
	408	EXPORT_SYMBOL(sdw_slave_read_prop);