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291 lines
7.1 KiB
291 lines
7.1 KiB
// 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/pm_runtime.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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/* 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 int rt715_sdca_sdw_remove(struct sdw_slave *slave) |
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{ |
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struct rt715_sdca_priv *rt715 = dev_get_drvdata(&slave->dev); |
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if (rt715->first_hw_init) |
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pm_runtime_disable(&slave->dev); |
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return 0; |
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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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sdw_show_ping_status(slave->bus, true); |
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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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.remove = rt715_sdca_sdw_remove, |
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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 <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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