^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Copyright(c) 2015-17 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * MIPI Discovery And Configuration (DisCo) Specification for SoundWire
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * specifies properties to be implemented for SoundWire Masters and Slaves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * The DisCo spec doesn't mandate these properties. However, SDW bus cannot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * work without knowing these values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * The helper functions read the Master and Slave properties. Implementers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * of Master or Slave drivers can use any of the below three mechanisms:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * a) Use these APIs here as .read_prop() callback for Master and Slave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * b) Implement own methods and set those as .read_prop(), but invoke
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * APIs in this file for generic read and override the values with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * platform specific data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * c) Implement ones own methods which do not use anything provided
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/soundwire/sdw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "bus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * sdw_master_read_prop() - Read Master properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @bus: SDW bus instance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int sdw_master_read_prop(struct sdw_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct sdw_master_prop *prop = &bus->prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct fwnode_handle *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int nval, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) device_property_read_u32(bus->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) "mipi-sdw-sw-interface-revision",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) &prop->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* Find master handle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) snprintf(name, sizeof(name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) "mipi-sdw-link-%d-subproperties", bus->link_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) link = device_get_named_child_node(bus->dev, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (!link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) dev_err(bus->dev, "Master node %s not found\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (fwnode_property_read_bool(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) "mipi-sdw-clock-stop-mode0-supported"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (fwnode_property_read_bool(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) "mipi-sdw-clock-stop-mode1-supported"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) prop->clk_stop_modes |= BIT(SDW_CLK_STOP_MODE1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) fwnode_property_read_u32(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) "mipi-sdw-max-clock-frequency",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) &prop->max_clk_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) nval = fwnode_property_count_u32(link, "mipi-sdw-clock-frequencies-supported");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) prop->num_clk_freq = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) prop->clk_freq = devm_kcalloc(bus->dev, prop->num_clk_freq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) sizeof(*prop->clk_freq),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (!prop->clk_freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) fwnode_property_read_u32_array(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) "mipi-sdw-clock-frequencies-supported",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) prop->clk_freq, prop->num_clk_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Check the frequencies supported. If FW doesn't provide max
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * freq, then populate here by checking values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (!prop->max_clk_freq && prop->clk_freq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) prop->max_clk_freq = prop->clk_freq[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for (i = 1; i < prop->num_clk_freq; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (prop->clk_freq[i] > prop->max_clk_freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) prop->max_clk_freq = prop->clk_freq[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) nval = fwnode_property_count_u32(link, "mipi-sdw-supported-clock-gears");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) prop->num_clk_gears = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) prop->clk_gears = devm_kcalloc(bus->dev, prop->num_clk_gears,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) sizeof(*prop->clk_gears),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!prop->clk_gears)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) fwnode_property_read_u32_array(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) "mipi-sdw-supported-clock-gears",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) prop->clk_gears,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) prop->num_clk_gears);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) fwnode_property_read_u32(link, "mipi-sdw-default-frame-rate",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) &prop->default_frame_rate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) fwnode_property_read_u32(link, "mipi-sdw-default-frame-row-size",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) &prop->default_row);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) fwnode_property_read_u32(link, "mipi-sdw-default-frame-col-size",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) &prop->default_col);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) prop->dynamic_frame = fwnode_property_read_bool(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) "mipi-sdw-dynamic-frame-shape");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) fwnode_property_read_u32(link, "mipi-sdw-command-error-threshold",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) &prop->err_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) EXPORT_SYMBOL(sdw_master_read_prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int sdw_slave_read_dp0(struct sdw_slave *slave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct fwnode_handle *port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct sdw_dp0_prop *dp0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) fwnode_property_read_u32(port, "mipi-sdw-port-max-wordlength",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) &dp0->max_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) fwnode_property_read_u32(port, "mipi-sdw-port-min-wordlength",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) &dp0->min_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) nval = fwnode_property_count_u32(port, "mipi-sdw-port-wordlength-configs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) dp0->num_words = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) dp0->words = devm_kcalloc(&slave->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) dp0->num_words, sizeof(*dp0->words),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!dp0->words)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) fwnode_property_read_u32_array(port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) "mipi-sdw-port-wordlength-configs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) dp0->words, dp0->num_words);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) dp0->BRA_flow_controlled = fwnode_property_read_bool(port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) "mipi-sdw-bra-flow-controlled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) dp0->simple_ch_prep_sm = fwnode_property_read_bool(port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) "mipi-sdw-simplified-channel-prepare-sm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) dp0->imp_def_interrupts = fwnode_property_read_bool(port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) "mipi-sdw-imp-def-dp0-interrupts-supported");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static int sdw_slave_read_dpn(struct sdw_slave *slave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct sdw_dpn_prop *dpn, int count, int ports,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) char *type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct fwnode_handle *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) u32 bit, i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) int nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) unsigned long addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) char name[40];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) addr = ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* valid ports are 1 to 14 so apply mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) addr &= GENMASK(14, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) for_each_set_bit(bit, &addr, 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) snprintf(name, sizeof(name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) "mipi-sdw-dp-%d-%s-subproperties", bit, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) dpn[i].num = bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) node = device_get_named_child_node(&slave->dev, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (!node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) dev_err(&slave->dev, "%s dpN not found\n", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) fwnode_property_read_u32(node, "mipi-sdw-port-max-wordlength",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) &dpn[i].max_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) fwnode_property_read_u32(node, "mipi-sdw-port-min-wordlength",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) &dpn[i].min_word);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) nval = fwnode_property_count_u32(node, "mipi-sdw-port-wordlength-configs");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) dpn[i].num_words = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) dpn[i].words = devm_kcalloc(&slave->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) dpn[i].num_words,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) sizeof(*dpn[i].words),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (!dpn[i].words)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) fwnode_property_read_u32_array(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) "mipi-sdw-port-wordlength-configs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) dpn[i].words, dpn[i].num_words);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) fwnode_property_read_u32(node, "mipi-sdw-data-port-type",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) &dpn[i].type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) fwnode_property_read_u32(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) "mipi-sdw-max-grouping-supported",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) &dpn[i].max_grouping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) dpn[i].simple_ch_prep_sm = fwnode_property_read_bool(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) "mipi-sdw-simplified-channelprepare-sm");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) fwnode_property_read_u32(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) "mipi-sdw-port-channelprepare-timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) &dpn[i].ch_prep_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) fwnode_property_read_u32(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) "mipi-sdw-imp-def-dpn-interrupts-supported",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) &dpn[i].imp_def_interrupts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) fwnode_property_read_u32(node, "mipi-sdw-min-channel-number",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) &dpn[i].min_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) fwnode_property_read_u32(node, "mipi-sdw-max-channel-number",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) &dpn[i].max_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) nval = fwnode_property_count_u32(node, "mipi-sdw-channel-number-list");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) dpn[i].num_channels = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) dpn[i].channels = devm_kcalloc(&slave->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) dpn[i].num_channels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) sizeof(*dpn[i].channels),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (!dpn[i].channels)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) fwnode_property_read_u32_array(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) "mipi-sdw-channel-number-list",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) dpn[i].channels, dpn[i].num_channels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) nval = fwnode_property_count_u32(node, "mipi-sdw-channel-combination-list");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (nval > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) dpn[i].num_ch_combinations = nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) dpn[i].ch_combinations = devm_kcalloc(&slave->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) dpn[i].num_ch_combinations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) sizeof(*dpn[i].ch_combinations),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) if (!dpn[i].ch_combinations)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) fwnode_property_read_u32_array(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) "mipi-sdw-channel-combination-list",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) dpn[i].ch_combinations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) dpn[i].num_ch_combinations);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) fwnode_property_read_u32(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) "mipi-sdw-modes-supported", &dpn[i].modes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) fwnode_property_read_u32(node, "mipi-sdw-max-async-buffer",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) &dpn[i].max_async_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) dpn[i].block_pack_mode = fwnode_property_read_bool(node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) "mipi-sdw-block-packing-mode");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) fwnode_property_read_u32(node, "mipi-sdw-port-encoding-type",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) &dpn[i].port_encoding);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /* TODO: Read audio mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * sdw_slave_read_prop() - Read Slave properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * @slave: SDW Slave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int sdw_slave_read_prop(struct sdw_slave *slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct sdw_slave_prop *prop = &slave->prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct device *dev = &slave->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct fwnode_handle *port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int nval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) device_property_read_u32(dev, "mipi-sdw-sw-interface-revision",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) &prop->mipi_revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) prop->wake_capable = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) "mipi-sdw-wake-up-unavailable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) prop->wake_capable = !prop->wake_capable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) prop->test_mode_capable = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) "mipi-sdw-test-mode-supported");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) prop->clk_stop_mode1 = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) "mipi-sdw-clock-stop-mode1-supported"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) prop->clk_stop_mode1 = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) prop->simple_clk_stop_capable = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) "mipi-sdw-simplified-clockstopprepare-sm-supported");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) device_property_read_u32(dev, "mipi-sdw-clockstopprepare-timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) &prop->clk_stop_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) device_property_read_u32(dev, "mipi-sdw-slave-channelprepare-timeout",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) &prop->ch_prep_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) device_property_read_u32(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) "mipi-sdw-clockstopprepare-hard-reset-behavior",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) &prop->reset_behave);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) prop->high_PHY_capable = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) "mipi-sdw-highPHY-capable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) prop->paging_support = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) "mipi-sdw-paging-support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) prop->bank_delay_support = device_property_read_bool(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) "mipi-sdw-bank-delay-support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) device_property_read_u32(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) "mipi-sdw-port15-read-behavior", &prop->p15_behave);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) device_property_read_u32(dev, "mipi-sdw-master-count",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) &prop->master_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) device_property_read_u32(dev, "mipi-sdw-source-port-list",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) &prop->source_ports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) device_property_read_u32(dev, "mipi-sdw-sink-port-list",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) &prop->sink_ports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /* Read dp0 properties */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) port = device_get_named_child_node(dev, "mipi-sdw-dp-0-subproperties");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (!port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) dev_dbg(dev, "DP0 node not found!!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) prop->dp0_prop = devm_kzalloc(&slave->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) sizeof(*prop->dp0_prop),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (!prop->dp0_prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) sdw_slave_read_dp0(slave, port, prop->dp0_prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * Based on each DPn port, get source and sink dpn properties.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * Also, some ports can operate as both source or sink.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* Allocate memory for set bits in port lists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) nval = hweight32(prop->source_ports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) sizeof(*prop->src_dpn_prop),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (!prop->src_dpn_prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) /* Read dpn properties for source port(s) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) sdw_slave_read_dpn(slave, prop->src_dpn_prop, nval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) prop->source_ports, "source");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) nval = hweight32(prop->sink_ports);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) sizeof(*prop->sink_dpn_prop),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (!prop->sink_dpn_prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* Read dpn properties for sink port(s) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) sdw_slave_read_dpn(slave, prop->sink_dpn_prop, nval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) prop->sink_ports, "sink");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) EXPORT_SYMBOL(sdw_slave_read_prop);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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