[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_count_u32(link, "mipi-sdw-clock-frequencies-supported");
	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) {
			fwnode_handle_put(link);
			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_count_u32(link, "mipi-sdw-supported-clock-gears");
	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) {
			fwnode_handle_put(link);
			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);

	fwnode_handle_put(link);

	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_count_u32(port, "mipi-sdw-port-wordlength-configs");
	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_count_u32(node, "mipi-sdw-port-wordlength-configs");
		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) {
				fwnode_handle_put(node);
				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_count_u32(node, "mipi-sdw-channel-number-list");
		if (nval > 0) {
			dpn[i].num_channels = nval;
			dpn[i].channels = devm_kcalloc(&slave->dev,
						       dpn[i].num_channels,
						       sizeof(*dpn[i].channels),
						 GFP_KERNEL);
			if (!dpn[i].channels) {
				fwnode_handle_put(node);
				return -ENOMEM;
			}

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

		nval = fwnode_property_count_u32(node, "mipi-sdw-channel-combination-list");
		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) {
				fwnode_handle_put(node);
				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 */

		fwnode_handle_put(node);

		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 nval;

	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) {
			fwnode_handle_put(port);
			return -ENOMEM;
		}

		sdw_slave_read_dp0(slave, port, prop->dp0_prop);

		fwnode_handle_put(port);
	}

	/*
	 * 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");

	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	62
be46cfba	63	nval = fwnode_property_count_u32(link, "mipi-sdw-clock-frequencies-supported");
56d4fe31	64	if (nval > 0) {
3424305b PLB	65	prop->num_clk_freq = nval;
	66	prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,
	67	sizeof(*prop->clk_freq),
	68	GFP_KERNEL);
e2d8ea0a PLB	69	if (!prop->clk_freq) {
e2d8ea0a PLB	70	fwnode_handle_put(link);
56d4fe31	71	return -ENOMEM;
e2d8ea0a	72	}
56d4fe31 VK	73
	74	fwnode_property_read_u32_array(link,
	75	"mipi-sdw-clock-frequencies-supported",
3424305b	76	prop->clk_freq, prop->num_clk_freq);
56d4fe31 VK	77	}
	78
	79	/*
	80	* Check the frequencies supported. If FW doesn't provide max
	81	* freq, then populate here by checking values.
	82	*/
3424305b PLB	83	if (!prop->max_clk_freq && prop->clk_freq) {
	84	prop->max_clk_freq = prop->clk_freq[0];
	85	for (i = 1; i < prop->num_clk_freq; i++) {
	86	if (prop->clk_freq[i] > prop->max_clk_freq)
	87	prop->max_clk_freq = prop->clk_freq[i];
56d4fe31 VK	88	}
	89	}
	90
be46cfba	91	nval = fwnode_property_count_u32(link, "mipi-sdw-supported-clock-gears");
56d4fe31	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);
e2d8ea0a PLB	97	if (!prop->clk_gears) {
e2d8ea0a PLB	98	fwnode_handle_put(link);
56d4fe31	99	return -ENOMEM;
e2d8ea0a	100	}
56d4fe31 VK	101
56d4fe31 VK	102	fwnode_property_read_u32_array(link,
31dba312 PLB	103	"mipi-sdw-supported-clock-gears",
	104	prop->clk_gears,
	105	prop->num_clk_gears);
56d4fe31 VK	106	}
	107
	108	fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",
31dba312	109	&prop->default_frame_rate);
56d4fe31 VK	110
56d4fe31 VK	111	fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",
31dba312	112	&prop->default_row);
56d4fe31 VK	113
56d4fe31 VK	114	fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",
31dba312	115	&prop->default_col);
56d4fe31 VK	116
	117	prop->dynamic_frame = fwnode_property_read_bool(link,
	118	"mipi-sdw-dynamic-frame-shape");
	119
	120	fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",
31dba312	121	&prop->err_threshold);
56d4fe31	122
e2d8ea0a PLB	123	fwnode_handle_put(link);
e2d8ea0a PLB	124
56d4fe31 VK	125	return 0;
	126	}
	127	EXPORT_SYMBOL(sdw_master_read_prop);
	128
	129	static int sdw_slave_read_dp0(struct sdw_slave *slave,
31dba312 PLB	130	struct fwnode_handle *port,
31dba312 PLB	131	struct sdw_dp0_prop *dp0)
56d4fe31 VK	132	{
	133	int nval;
	134
	135	fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",
31dba312	136	&dp0->max_word);
56d4fe31 VK	137
56d4fe31 VK	138	fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",
31dba312	139	&dp0->min_word);
56d4fe31	140
be46cfba	141	nval = fwnode_property_count_u32(port, "mipi-sdw-port-wordlength-configs");
56d4fe31 VK	142	if (nval > 0) {
	143
	144	dp0->num_words = nval;
	145	dp0->words = devm_kcalloc(&slave->dev,
31dba312 PLB	146	dp0->num_words, sizeof(*dp0->words),
31dba312 PLB	147	GFP_KERNEL);
56d4fe31 VK	148	if (!dp0->words)
	149	return -ENOMEM;
	150
	151	fwnode_property_read_u32_array(port,
	152	"mipi-sdw-port-wordlength-configs",
	153	dp0->words, dp0->num_words);
	154	}
	155
8acbbfec	156	dp0->BRA_flow_controlled = fwnode_property_read_bool(port,
31dba312	157	"mipi-sdw-bra-flow-controlled");
56d4fe31	158
31dba312 PLB	159	dp0->simple_ch_prep_sm = fwnode_property_read_bool(port,
31dba312 PLB	160	"mipi-sdw-simplified-channel-prepare-sm");
56d4fe31	161
8acbbfec	162	dp0->imp_def_interrupts = fwnode_property_read_bool(port,
31dba312	163	"mipi-sdw-imp-def-dp0-interrupts-supported");
56d4fe31 VK	164
	165	return 0;
	166	}
	167
	168	static int sdw_slave_read_dpn(struct sdw_slave *slave,
31dba312 PLB	169	struct sdw_dpn_prop *dpn, int count, int ports,
31dba312 PLB	170	char *type)
56d4fe31 VK	171	{
	172	struct fwnode_handle *node;
	173	u32 bit, i = 0;
	174	int nval;
	175	unsigned long addr;
	176	char name[40];
	177
	178	addr = ports;
	179	/* valid ports are 1 to 14 so apply mask */
	180	addr &= GENMASK(14, 1);
	181
	182	for_each_set_bit(bit, &addr, 32) {
	183	snprintf(name, sizeof(name),
31dba312	184	"mipi-sdw-dp-%d-%s-subproperties", bit, type);
56d4fe31 VK	185
	186	dpn[i].num = bit;
	187
	188	node = device_get_named_child_node(&slave->dev, name);
	189	if (!node) {
	190	dev_err(&slave->dev, "%s dpN not found\n", name);
	191	return -EIO;
	192	}
	193
	194	fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",
31dba312	195	&dpn[i].max_word);
56d4fe31	196	fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",
31dba312	197	&dpn[i].min_word);
56d4fe31	198
be46cfba	199	nval = fwnode_property_count_u32(node, "mipi-sdw-port-wordlength-configs");
56d4fe31	200	if (nval > 0) {
56d4fe31 VK	201	dpn[i].num_words = nval;
56d4fe31 VK	202	dpn[i].words = devm_kcalloc(&slave->dev,
31dba312 PLB	203	dpn[i].num_words,
	204	sizeof(*dpn[i].words),
	205	GFP_KERNEL);
e2d8ea0a PLB	206	if (!dpn[i].words) {
e2d8ea0a PLB	207	fwnode_handle_put(node);
56d4fe31	208	return -ENOMEM;
e2d8ea0a	209	}
56d4fe31 VK	210
	211	fwnode_property_read_u32_array(node,
	212	"mipi-sdw-port-wordlength-configs",
	213	dpn[i].words, dpn[i].num_words);
	214	}
	215
	216	fwnode_property_read_u32(node, "mipi-sdw-data-port-type",
31dba312	217	&dpn[i].type);
56d4fe31 VK	218
56d4fe31 VK	219	fwnode_property_read_u32(node,
31dba312 PLB	220	"mipi-sdw-max-grouping-supported",
31dba312 PLB	221	&dpn[i].max_grouping);
56d4fe31 VK	222
	223	dpn[i].simple_ch_prep_sm = fwnode_property_read_bool(node,
	224	"mipi-sdw-simplified-channelprepare-sm");
	225
	226	fwnode_property_read_u32(node,
31dba312 PLB	227	"mipi-sdw-port-channelprepare-timeout",
31dba312 PLB	228	&dpn[i].ch_prep_timeout);
56d4fe31 VK	229
	230	fwnode_property_read_u32(node,
	231	"mipi-sdw-imp-def-dpn-interrupts-supported",
8acbbfec	232	&dpn[i].imp_def_interrupts);
56d4fe31 VK	233
56d4fe31 VK	234	fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",
31dba312	235	&dpn[i].min_ch);
56d4fe31 VK	236
56d4fe31 VK	237	fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",
31dba312	238	&dpn[i].max_ch);
56d4fe31	239
be46cfba	240	nval = fwnode_property_count_u32(node, "mipi-sdw-channel-number-list");
56d4fe31	241	if (nval > 0) {
6bf393c5 PLB	242	dpn[i].num_channels = nval;
	243	dpn[i].channels = devm_kcalloc(&slave->dev,
	244	dpn[i].num_channels,
	245	sizeof(*dpn[i].channels),
31dba312	246	GFP_KERNEL);
e2d8ea0a PLB	247	if (!dpn[i].channels) {
e2d8ea0a PLB	248	fwnode_handle_put(node);
56d4fe31	249	return -ENOMEM;
e2d8ea0a	250	}
56d4fe31 VK	251
	252	fwnode_property_read_u32_array(node,
	253	"mipi-sdw-channel-number-list",
6bf393c5	254	dpn[i].channels, dpn[i].num_channels);
56d4fe31 VK	255	}
56d4fe31 VK	256
be46cfba	257	nval = fwnode_property_count_u32(node, "mipi-sdw-channel-combination-list");
56d4fe31	258	if (nval > 0) {
56d4fe31 VK	259	dpn[i].num_ch_combinations = nval;
	260	dpn[i].ch_combinations = devm_kcalloc(&slave->dev,
	261	dpn[i].num_ch_combinations,
	262	sizeof(*dpn[i].ch_combinations),
	263	GFP_KERNEL);
e2d8ea0a PLB	264	if (!dpn[i].ch_combinations) {
e2d8ea0a PLB	265	fwnode_handle_put(node);
56d4fe31	266	return -ENOMEM;
e2d8ea0a	267	}
56d4fe31 VK	268
	269	fwnode_property_read_u32_array(node,
	270	"mipi-sdw-channel-combination-list",
	271	dpn[i].ch_combinations,
	272	dpn[i].num_ch_combinations);
	273	}
	274
	275	fwnode_property_read_u32(node,
	276	"mipi-sdw-modes-supported", &dpn[i].modes);
	277
	278	fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",
31dba312	279	&dpn[i].max_async_buffer);
56d4fe31 VK	280
	281	dpn[i].block_pack_mode = fwnode_property_read_bool(node,
	282	"mipi-sdw-block-packing-mode");
	283
	284	fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",
31dba312	285	&dpn[i].port_encoding);
56d4fe31 VK	286
	287	/* TODO: Read audio mode */
	288
e2d8ea0a PLB	289	fwnode_handle_put(node);
e2d8ea0a PLB	290
56d4fe31 VK	291	i++;
	292	}
	293
	294	return 0;
	295	}
	296
	297	/**
	298	* sdw_slave_read_prop() - Read Slave properties
	299	* @slave: SDW Slave
	300	*/
	301	int sdw_slave_read_prop(struct sdw_slave *slave)
	302	{
	303	struct sdw_slave_prop *prop = &slave->prop;
	304	struct device *dev = &slave->dev;
	305	struct fwnode_handle *port;
60737558	306	int nval;
56d4fe31 VK	307
56d4fe31 VK	308	device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",
31dba312	309	&prop->mipi_revision);
56d4fe31 VK	310
	311	prop->wake_capable = device_property_read_bool(dev,
	312	"mipi-sdw-wake-up-unavailable");
	313	prop->wake_capable = !prop->wake_capable;
	314
	315	prop->test_mode_capable = device_property_read_bool(dev,
	316	"mipi-sdw-test-mode-supported");
	317
	318	prop->clk_stop_mode1 = false;
	319	if (device_property_read_bool(dev,
	320	"mipi-sdw-clock-stop-mode1-supported"))
	321	prop->clk_stop_mode1 = true;
	322
	323	prop->simple_clk_stop_capable = device_property_read_bool(dev,
	324	"mipi-sdw-simplified-clockstopprepare-sm-supported");
	325
	326	device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",
31dba312	327	&prop->clk_stop_timeout);
56d4fe31 VK	328
56d4fe31 VK	329	device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",
31dba312	330	&prop->ch_prep_timeout);
56d4fe31 VK	331
	332	device_property_read_u32(dev,
	333	"mipi-sdw-clockstopprepare-hard-reset-behavior",
	334	&prop->reset_behave);
	335
	336	prop->high_PHY_capable = device_property_read_bool(dev,
	337	"mipi-sdw-highPHY-capable");
	338
	339	prop->paging_support = device_property_read_bool(dev,
	340	"mipi-sdw-paging-support");
	341
	342	prop->bank_delay_support = device_property_read_bool(dev,
	343	"mipi-sdw-bank-delay-support");
	344
	345	device_property_read_u32(dev,
	346	"mipi-sdw-port15-read-behavior", &prop->p15_behave);
	347
	348	device_property_read_u32(dev, "mipi-sdw-master-count",
31dba312	349	&prop->master_count);
56d4fe31 VK	350
56d4fe31 VK	351	device_property_read_u32(dev, "mipi-sdw-source-port-list",
31dba312	352	&prop->source_ports);
56d4fe31 VK	353
56d4fe31 VK	354	device_property_read_u32(dev, "mipi-sdw-sink-port-list",
31dba312	355	&prop->sink_ports);
56d4fe31 VK	356
	357	/* Read dp0 properties */
	358	port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");
	359	if (!port) {
	360	dev_dbg(dev, "DP0 node not found!!\n");
	361	} else {
56d4fe31	362	prop->dp0_prop = devm_kzalloc(&slave->dev,
31dba312 PLB	363	sizeof(*prop->dp0_prop),
31dba312 PLB	364	GFP_KERNEL);
e2d8ea0a PLB	365	if (!prop->dp0_prop) {
e2d8ea0a PLB	366	fwnode_handle_put(port);
56d4fe31	367	return -ENOMEM;
e2d8ea0a	368	}
56d4fe31 VK	369
56d4fe31 VK	370	sdw_slave_read_dp0(slave, port, prop->dp0_prop);
e2d8ea0a PLB	371
e2d8ea0a PLB	372	fwnode_handle_put(port);
56d4fe31 VK	373	}
	374
	375	/*
	376	* Based on each DPn port, get source and sink dpn properties.
	377	* Also, some ports can operate as both source or sink.
	378	*/
	379
	380	/* Allocate memory for set bits in port lists */
	381	nval = hweight32(prop->source_ports);
	382	prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
31dba312 PLB	383	sizeof(*prop->src_dpn_prop),
31dba312 PLB	384	GFP_KERNEL);
56d4fe31 VK	385	if (!prop->src_dpn_prop)
	386	return -ENOMEM;
	387
	388	/* Read dpn properties for source port(s) */
	389	sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,
31dba312	390	prop->source_ports, "source");
56d4fe31 VK	391
	392	nval = hweight32(prop->sink_ports);
	393	prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
31dba312 PLB	394	sizeof(*prop->sink_dpn_prop),
31dba312 PLB	395	GFP_KERNEL);
56d4fe31 VK	396	if (!prop->sink_dpn_prop)
	397	return -ENOMEM;
	398
	399	/* Read dpn properties for sink port(s) */
	400	sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,
31dba312	401	prop->sink_ports, "sink");
56d4fe31	402
56d4fe31 VK	403	return 0;
	404	}
	405	EXPORT_SYMBOL(sdw_slave_read_prop);