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576 lines
14 KiB
576 lines
14 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// rt711-sdw.c -- rt711 ALSA SoC audio driver |
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// |
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// Copyright(c) 2019 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 "rt711.h" |
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#include "rt711-sdw.h" |
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static bool rt711_readable_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case 0x00e0: |
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case 0x00f0: |
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case 0x2012 ... 0x2016: |
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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 0x2201 ... 0x2204: |
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case 0x2206 ... 0x2212: |
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case 0x2220 ... 0x2223: |
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case 0x2230 ... 0x2239: |
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case 0x2f01 ... 0x2f0f: |
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case 0x3000 ... 0x3fff: |
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case 0x7000 ... 0x7fff: |
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case 0x8300 ... 0x83ff: |
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case 0x9c00 ... 0x9cff: |
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case 0xb900 ... 0xb9ff: |
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case 0x752009: |
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case 0x752011: |
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case 0x75201a: |
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case 0x752045: |
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case 0x752046: |
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case 0x752048: |
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case 0x75204a: |
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case 0x75206b: |
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case 0x75206f: |
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case 0x752080: |
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case 0x752081: |
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case 0x752091: |
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case 0x755800: |
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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 rt711_volatile_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case 0x2016: |
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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 0x2012 ... 0x2015: /* HD-A read */ |
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case 0x202d ... 0x202f: /* BRA */ |
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case 0x2201 ... 0x2212: /* i2c debug */ |
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case 0x2220 ... 0x2223: /* decoded HD-A */ |
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case 0x9c00 ... 0x9cff: |
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case 0xb900 ... 0xb9ff: |
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case 0xff01: |
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case 0x75201a: |
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case 0x752046: |
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case 0x752080: |
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case 0x752081: |
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case 0x755800: |
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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 int rt711_sdw_read(void *context, unsigned int reg, unsigned int *val) |
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{ |
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struct device *dev = context; |
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struct rt711_priv *rt711 = dev_get_drvdata(dev); |
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unsigned int sdw_data_3, sdw_data_2, sdw_data_1, sdw_data_0; |
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unsigned int reg2 = 0, reg3 = 0, reg4 = 0, mask, nid, val2; |
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unsigned int is_hda_reg = 1, is_index_reg = 0; |
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int ret; |
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if (reg > 0xffff) |
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is_index_reg = 1; |
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mask = reg & 0xf000; |
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if (is_index_reg) { /* index registers */ |
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val2 = reg & 0xff; |
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reg = reg >> 8; |
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nid = reg & 0xff; |
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ret = regmap_write(rt711->sdw_regmap, reg, 0); |
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if (ret < 0) |
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return ret; |
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reg2 = reg + 0x1000; |
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reg2 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg2, val2); |
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if (ret < 0) |
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return ret; |
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reg3 = RT711_PRIV_DATA_R_H | nid; |
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ret = regmap_write(rt711->sdw_regmap, |
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reg3, ((*val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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reg4 = reg3 + 0x1000; |
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reg4 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg4, (*val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} else if (mask == 0x3000) { |
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reg += 0x8000; |
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ret = regmap_write(rt711->sdw_regmap, reg, *val); |
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if (ret < 0) |
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return ret; |
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} else if (mask == 0x7000) { |
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reg += 0x2000; |
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reg |= 0x800; |
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ret = regmap_write(rt711->sdw_regmap, |
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reg, ((*val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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reg2 = reg + 0x1000; |
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reg2 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg2, (*val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} else if ((reg & 0xff00) == 0x8300) { /* for R channel */ |
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reg2 = reg - 0x1000; |
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reg2 &= ~0x80; |
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ret = regmap_write(rt711->sdw_regmap, |
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reg2, ((*val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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ret = regmap_write(rt711->sdw_regmap, reg, (*val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} else if (mask == 0x9000) { |
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ret = regmap_write(rt711->sdw_regmap, |
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reg, ((*val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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reg2 = reg + 0x1000; |
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reg2 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg2, (*val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} else if (mask == 0xb000) { |
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ret = regmap_write(rt711->sdw_regmap, reg, *val); |
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if (ret < 0) |
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return ret; |
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} else { |
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ret = regmap_read(rt711->sdw_regmap, reg, val); |
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if (ret < 0) |
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return ret; |
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is_hda_reg = 0; |
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} |
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if (is_hda_reg || is_index_reg) { |
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sdw_data_3 = 0; |
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sdw_data_2 = 0; |
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sdw_data_1 = 0; |
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sdw_data_0 = 0; |
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ret = regmap_read(rt711->sdw_regmap, |
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RT711_READ_HDA_3, &sdw_data_3); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(rt711->sdw_regmap, |
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RT711_READ_HDA_2, &sdw_data_2); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(rt711->sdw_regmap, |
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RT711_READ_HDA_1, &sdw_data_1); |
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if (ret < 0) |
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return ret; |
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ret = regmap_read(rt711->sdw_regmap, |
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RT711_READ_HDA_0, &sdw_data_0); |
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if (ret < 0) |
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return ret; |
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*val = ((sdw_data_3 & 0xff) << 24) | |
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((sdw_data_2 & 0xff) << 16) | |
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((sdw_data_1 & 0xff) << 8) | (sdw_data_0 & 0xff); |
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} |
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if (is_hda_reg == 0) |
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dev_dbg(dev, "[%s] %04x => %08x\n", __func__, reg, *val); |
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else if (is_index_reg) |
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dev_dbg(dev, "[%s] %04x %04x %04x %04x => %08x\n", |
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__func__, reg, reg2, reg3, reg4, *val); |
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else |
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dev_dbg(dev, "[%s] %04x %04x => %08x\n", |
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__func__, reg, reg2, *val); |
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return 0; |
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} |
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static int rt711_sdw_write(void *context, unsigned int reg, unsigned int val) |
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{ |
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struct device *dev = context; |
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struct rt711_priv *rt711 = dev_get_drvdata(dev); |
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unsigned int reg2 = 0, reg3, reg4, nid, mask, val2; |
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unsigned int is_index_reg = 0; |
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int ret; |
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if (reg > 0xffff) |
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is_index_reg = 1; |
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mask = reg & 0xf000; |
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if (is_index_reg) { /* index registers */ |
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val2 = reg & 0xff; |
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reg = reg >> 8; |
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nid = reg & 0xff; |
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ret = regmap_write(rt711->sdw_regmap, reg, 0); |
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if (ret < 0) |
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return ret; |
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reg2 = reg + 0x1000; |
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reg2 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg2, val2); |
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if (ret < 0) |
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return ret; |
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reg3 = RT711_PRIV_DATA_W_H | nid; |
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ret = regmap_write(rt711->sdw_regmap, |
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reg3, ((val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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reg4 = reg3 + 0x1000; |
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reg4 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg4, (val & 0xff)); |
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if (ret < 0) |
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return ret; |
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is_index_reg = 1; |
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} else if (reg < 0x4fff) { |
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ret = regmap_write(rt711->sdw_regmap, reg, val); |
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if (ret < 0) |
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return ret; |
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} else if (reg == RT711_FUNC_RESET) { |
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ret = regmap_write(rt711->sdw_regmap, reg, val); |
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if (ret < 0) |
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return ret; |
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} else if (mask == 0x7000) { |
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ret = regmap_write(rt711->sdw_regmap, |
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reg, ((val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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reg2 = reg + 0x1000; |
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reg2 |= 0x80; |
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ret = regmap_write(rt711->sdw_regmap, reg2, (val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} else if ((reg & 0xff00) == 0x8300) { /* for R channel */ |
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reg2 = reg - 0x1000; |
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reg2 &= ~0x80; |
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ret = regmap_write(rt711->sdw_regmap, |
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reg2, ((val >> 8) & 0xff)); |
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if (ret < 0) |
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return ret; |
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ret = regmap_write(rt711->sdw_regmap, reg, (val & 0xff)); |
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if (ret < 0) |
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return ret; |
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} |
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if (reg2 == 0) |
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dev_dbg(dev, "[%s] %04x <= %04x\n", __func__, reg, val); |
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else if (is_index_reg) |
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dev_dbg(dev, "[%s] %04x %04x %04x %04x <= %04x %04x\n", |
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__func__, reg, reg2, reg3, reg4, val2, val); |
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else |
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dev_dbg(dev, "[%s] %04x %04x <= %04x\n", |
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__func__, reg, reg2, val); |
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return 0; |
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} |
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static const struct regmap_config rt711_regmap = { |
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.reg_bits = 24, |
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.val_bits = 32, |
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.readable_reg = rt711_readable_register, |
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.volatile_reg = rt711_volatile_register, |
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.max_register = 0x755800, |
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.reg_defaults = rt711_reg_defaults, |
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.num_reg_defaults = ARRAY_SIZE(rt711_reg_defaults), |
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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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.reg_read = rt711_sdw_read, |
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.reg_write = rt711_sdw_write, |
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}; |
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static const struct regmap_config rt711_sdw_regmap = { |
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.name = "sdw", |
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.reg_bits = 32, |
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.val_bits = 8, |
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.readable_reg = rt711_readable_register, |
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.max_register = 0xff01, |
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.cache_type = REGCACHE_NONE, |
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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 rt711_update_status(struct sdw_slave *slave, |
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enum sdw_slave_status status) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); |
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/* Update the status */ |
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rt711->status = status; |
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if (status == SDW_SLAVE_UNATTACHED) |
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rt711->hw_init = false; |
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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 (rt711->hw_init || rt711->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 rt711_io_init(&slave->dev, slave); |
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} |
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static int rt711_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; |
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int i, j; |
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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->scp_int1_mask = SDW_SCP_INT1_IMPL_DEF | SDW_SCP_INT1_BUS_CLASH | |
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SDW_SCP_INT1_PARITY; |
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prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY; |
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prop->paging_support = false; |
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/* first we need to allocate memory for set bits in port lists */ |
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prop->source_ports = 0x14; /* BITMAP: 00010100 */ |
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prop->sink_ports = 0x8; /* BITMAP: 00001000 */ |
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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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i = 0; |
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dpn = prop->src_dpn_prop; |
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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].type = SDW_DPN_FULL; |
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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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/* do this again for sink now */ |
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nval = hweight32(prop->sink_ports); |
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prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, |
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sizeof(*prop->sink_dpn_prop), |
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GFP_KERNEL); |
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if (!prop->sink_dpn_prop) |
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return -ENOMEM; |
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j = 0; |
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dpn = prop->sink_dpn_prop; |
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addr = prop->sink_ports; |
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for_each_set_bit(bit, &addr, 32) { |
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dpn[j].num = bit; |
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dpn[j].type = SDW_DPN_FULL; |
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dpn[j].simple_ch_prep_sm = true; |
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dpn[j].ch_prep_timeout = 10; |
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j++; |
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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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/* wake-up event */ |
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prop->wake_capable = 1; |
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return 0; |
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} |
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static int rt711_bus_config(struct sdw_slave *slave, |
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struct sdw_bus_params *params) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); |
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int ret; |
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memcpy(&rt711->params, params, sizeof(*params)); |
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ret = rt711_clock_config(&slave->dev); |
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if (ret < 0) |
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dev_err(&slave->dev, "Invalid clk config"); |
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return ret; |
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} |
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static int rt711_interrupt_callback(struct sdw_slave *slave, |
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struct sdw_slave_intr_status *status) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); |
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dev_dbg(&slave->dev, |
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"%s control_port_stat=%x", __func__, status->control_port); |
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mutex_lock(&rt711->disable_irq_lock); |
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if (status->control_port & 0x4 && !rt711->disable_irq) { |
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mod_delayed_work(system_power_efficient_wq, |
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&rt711->jack_detect_work, msecs_to_jiffies(250)); |
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} |
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mutex_unlock(&rt711->disable_irq_lock); |
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return 0; |
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} |
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static const struct sdw_slave_ops rt711_slave_ops = { |
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.read_prop = rt711_read_prop, |
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.interrupt_callback = rt711_interrupt_callback, |
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.update_status = rt711_update_status, |
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.bus_config = rt711_bus_config, |
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}; |
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static int rt711_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 *sdw_regmap, *regmap; |
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/* Regmap Initialization */ |
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sdw_regmap = devm_regmap_init_sdw(slave, &rt711_sdw_regmap); |
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if (IS_ERR(sdw_regmap)) |
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return PTR_ERR(sdw_regmap); |
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regmap = devm_regmap_init(&slave->dev, NULL, |
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&slave->dev, &rt711_regmap); |
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if (IS_ERR(regmap)) |
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return PTR_ERR(regmap); |
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rt711_init(&slave->dev, sdw_regmap, regmap, slave); |
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return 0; |
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} |
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static int rt711_sdw_remove(struct sdw_slave *slave) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev); |
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if (rt711 && rt711->hw_init) { |
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cancel_delayed_work_sync(&rt711->jack_detect_work); |
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cancel_delayed_work_sync(&rt711->jack_btn_check_work); |
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cancel_work_sync(&rt711->calibration_work); |
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} |
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return 0; |
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} |
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static const struct sdw_device_id rt711_id[] = { |
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SDW_SLAVE_ENTRY_EXT(0x025d, 0x711, 0x2, 0, 0), |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(sdw, rt711_id); |
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static int __maybe_unused rt711_dev_suspend(struct device *dev) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(dev); |
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if (!rt711->hw_init) |
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return 0; |
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cancel_delayed_work_sync(&rt711->jack_detect_work); |
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cancel_delayed_work_sync(&rt711->jack_btn_check_work); |
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cancel_work_sync(&rt711->calibration_work); |
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regcache_cache_only(rt711->regmap, true); |
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return 0; |
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} |
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static int __maybe_unused rt711_dev_system_suspend(struct device *dev) |
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{ |
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struct rt711_priv *rt711 = dev_get_drvdata(dev); |
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struct sdw_slave *slave = dev_to_sdw_dev(dev); |
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int ret; |
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if (!rt711->hw_init) |
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return 0; |
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/* |
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* prevent new interrupts from being handled after the |
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* deferred work completes and before the parent disables |
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* interrupts on the link |
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*/ |
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mutex_lock(&rt711->disable_irq_lock); |
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rt711->disable_irq = true; |
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ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1, |
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SDW_SCP_INT1_IMPL_DEF, 0); |
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mutex_unlock(&rt711->disable_irq_lock); |
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if (ret < 0) { |
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/* log but don't prevent suspend from happening */ |
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dev_dbg(&slave->dev, "%s: could not disable imp-def interrupts\n:", __func__); |
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} |
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return rt711_dev_suspend(dev); |
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} |
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#define RT711_PROBE_TIMEOUT 5000 |
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static int __maybe_unused rt711_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 rt711_priv *rt711 = dev_get_drvdata(dev); |
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unsigned long time; |
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if (!rt711->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->initialization_complete, |
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msecs_to_jiffies(RT711_PROBE_TIMEOUT)); |
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if (!time) { |
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dev_err(&slave->dev, "Initialization 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; |
|
regcache_cache_only(rt711->regmap, false); |
|
regcache_sync_region(rt711->regmap, 0x3000, 0x8fff); |
|
regcache_sync_region(rt711->regmap, 0x752009, 0x752091); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct dev_pm_ops rt711_pm = { |
|
SET_SYSTEM_SLEEP_PM_OPS(rt711_dev_system_suspend, rt711_dev_resume) |
|
SET_RUNTIME_PM_OPS(rt711_dev_suspend, rt711_dev_resume, NULL) |
|
}; |
|
|
|
static struct sdw_driver rt711_sdw_driver = { |
|
.driver = { |
|
.name = "rt711", |
|
.owner = THIS_MODULE, |
|
.pm = &rt711_pm, |
|
}, |
|
.probe = rt711_sdw_probe, |
|
.remove = rt711_sdw_remove, |
|
.ops = &rt711_slave_ops, |
|
.id_table = rt711_id, |
|
}; |
|
module_sdw_driver(rt711_sdw_driver); |
|
|
|
MODULE_DESCRIPTION("ASoC RT711 SDW driver"); |
|
MODULE_AUTHOR("Shuming Fan <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|