280 lines
6.9 KiB
C
280 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// rt715-sdca-sdw.c -- rt715 ALSA SoC audio driver
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//
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// Copyright(c) 2020 Realtek Semiconductor Corp.
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//
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//
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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#include <linux/soundwire/sdw.h>
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#include <linux/soundwire/sdw_type.h>
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#include <linux/soundwire/sdw_registers.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include "rt715-sdca.h"
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#include "rt715-sdca-sdw.h"
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static bool rt715_sdca_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x201a ... 0x2027:
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case 0x2029 ... 0x202a:
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case 0x202d ... 0x2034:
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case 0x2200 ... 0x2204:
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case 0x2206 ... 0x2212:
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case 0x2230 ... 0x2239:
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case 0x2f5b:
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case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
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RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00):
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return true;
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default:
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return false;
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}
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}
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static bool rt715_sdca_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x201b:
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case 0x201c:
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case 0x201d:
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case 0x201f:
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case 0x2021:
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case 0x2023:
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case 0x2230:
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case 0x202d ... 0x202f: /* BRA */
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case 0x2200 ... 0x2212: /* i2c debug */
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case 0x2f07:
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case 0x2f1b ... 0x2f1e:
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case 0x2f30 ... 0x2f34:
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case 0x2f50 ... 0x2f51:
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case 0x2f53 ... 0x2f59:
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case 0x2f5c ... 0x2f5f:
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case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
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RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00): /* VAD Searching status */
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return true;
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default:
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return false;
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}
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}
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static bool rt715_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x2000000:
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case 0x200002b:
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case 0x2000036:
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case 0x2000037:
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case 0x2000039:
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case 0x2000044:
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case 0x6100000:
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return true;
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default:
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return false;
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}
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}
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static bool rt715_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x2000000:
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return true;
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default:
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return false;
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}
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}
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static const struct regmap_config rt715_sdca_regmap = {
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.reg_bits = 32,
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.val_bits = 8,
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.readable_reg = rt715_sdca_readable_register,
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.volatile_reg = rt715_sdca_volatile_register,
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.max_register = 0x43ffffff,
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.reg_defaults = rt715_reg_defaults_sdca,
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.num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults_sdca),
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.cache_type = REGCACHE_RBTREE,
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.use_single_read = true,
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.use_single_write = true,
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};
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static const struct regmap_config rt715_sdca_mbq_regmap = {
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.name = "sdw-mbq",
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.reg_bits = 32,
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.val_bits = 16,
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.readable_reg = rt715_sdca_mbq_readable_register,
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.volatile_reg = rt715_sdca_mbq_volatile_register,
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.max_register = 0x43ffffff,
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.reg_defaults = rt715_mbq_reg_defaults_sdca,
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.num_reg_defaults = ARRAY_SIZE(rt715_mbq_reg_defaults_sdca),
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.cache_type = REGCACHE_RBTREE,
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.use_single_read = true,
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.use_single_write = true,
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};
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static int rt715_sdca_update_status(struct sdw_slave *slave,
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enum sdw_slave_status status)
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{
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struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev);
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/* Update the status */
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rt715->status = status;
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/*
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* Perform initialization only if slave status is present and
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* hw_init flag is false
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*/
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if (rt715->hw_init || rt715->status != SDW_SLAVE_ATTACHED)
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return 0;
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/* perform I/O transfers required for Slave initialization */
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return rt715_sdca_io_init(&slave->dev, slave);
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}
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static int rt715_sdca_read_prop(struct sdw_slave *slave)
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{
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struct sdw_slave_prop *prop = &slave->prop;
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int nval, i;
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u32 bit;
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unsigned long addr;
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struct sdw_dpn_prop *dpn;
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prop->paging_support = true;
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/* first we need to allocate memory for set bits in port lists */
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prop->source_ports = 0x50;/* BITMAP: 01010000 */
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prop->sink_ports = 0x0; /* BITMAP: 00000000 */
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nval = hweight32(prop->source_ports);
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prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
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sizeof(*prop->src_dpn_prop),
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GFP_KERNEL);
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if (!prop->src_dpn_prop)
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return -ENOMEM;
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dpn = prop->src_dpn_prop;
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i = 0;
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addr = prop->source_ports;
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for_each_set_bit(bit, &addr, 32) {
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dpn[i].num = bit;
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dpn[i].simple_ch_prep_sm = true;
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dpn[i].ch_prep_timeout = 10;
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i++;
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}
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/* set the timeout values */
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prop->clk_stop_timeout = 20;
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return 0;
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}
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static struct sdw_slave_ops rt715_sdca_slave_ops = {
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.read_prop = rt715_sdca_read_prop,
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.update_status = rt715_sdca_update_status,
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};
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static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
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const struct sdw_device_id *id)
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{
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struct regmap *mbq_regmap, *regmap;
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slave->ops = &rt715_sdca_slave_ops;
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/* Regmap Initialization */
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mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
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if (IS_ERR(mbq_regmap))
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return PTR_ERR(mbq_regmap);
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regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
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}
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static const struct sdw_device_id rt715_sdca_id[] = {
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SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0),
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SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0),
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{},
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};
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MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);
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static int __maybe_unused rt715_dev_suspend(struct device *dev)
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{
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struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
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if (!rt715->hw_init)
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return 0;
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regcache_cache_only(rt715->regmap, true);
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regcache_mark_dirty(rt715->regmap);
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regcache_cache_only(rt715->mbq_regmap, true);
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regcache_mark_dirty(rt715->mbq_regmap);
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return 0;
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}
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#define RT715_PROBE_TIMEOUT 5000
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static int __maybe_unused rt715_dev_resume(struct device *dev)
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{
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struct sdw_slave *slave = dev_to_sdw_dev(dev);
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struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
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unsigned long time;
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if (!rt715->first_hw_init)
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return 0;
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if (!slave->unattach_request)
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goto regmap_sync;
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time = wait_for_completion_timeout(&slave->enumeration_complete,
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msecs_to_jiffies(RT715_PROBE_TIMEOUT));
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if (!time) {
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dev_err(&slave->dev, "Enumeration not complete, timed out\n");
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return -ETIMEDOUT;
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}
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regmap_sync:
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slave->unattach_request = 0;
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regcache_cache_only(rt715->regmap, false);
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regcache_sync_region(rt715->regmap,
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SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
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CH_00),
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SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
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RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
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regcache_cache_only(rt715->mbq_regmap, false);
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regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff);
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regcache_sync_region(rt715->mbq_regmap,
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SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
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CH_00),
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SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
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RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
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return 0;
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}
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static const struct dev_pm_ops rt715_pm = {
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SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume)
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SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL)
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};
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static struct sdw_driver rt715_sdw_driver = {
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.driver = {
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.name = "rt715-sdca",
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.owner = THIS_MODULE,
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.pm = &rt715_pm,
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},
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.probe = rt715_sdca_sdw_probe,
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.ops = &rt715_sdca_slave_ops,
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.id_table = rt715_sdca_id,
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};
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module_sdw_driver(rt715_sdw_driver);
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MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
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MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
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MODULE_LICENSE("GPL v2");
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