584 lines
14 KiB
C
584 lines
14 KiB
C
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// 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/pm_runtime.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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|
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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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|
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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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|
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static int rt711_read_prop(struct sdw_slave *slave)
|
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|
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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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|
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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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|
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prop->scp_int1_mask = SDW_SCP_INT1_IMPL_DEF | SDW_SCP_INT1_BUS_CLASH |
|
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|
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SDW_SCP_INT1_PARITY;
|
||
|
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prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
|
||
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|
||
|
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prop->paging_support = false;
|
||
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|
||
|
|
/* first we need to allocate memory for set bits in port lists */
|
||
|
|
prop->source_ports = 0x14; /* BITMAP: 00010100 */
|
||
|
|
prop->sink_ports = 0x8; /* BITMAP: 00001000 */
|
||
|
|
|
||
|
|
nval = hweight32(prop->source_ports);
|
||
|
|
prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval,
|
||
|
|
sizeof(*prop->src_dpn_prop),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!prop->src_dpn_prop)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
i = 0;
|
||
|
|
dpn = prop->src_dpn_prop;
|
||
|
|
addr = prop->source_ports;
|
||
|
|
for_each_set_bit(bit, &addr, 32) {
|
||
|
|
dpn[i].num = bit;
|
||
|
|
dpn[i].type = SDW_DPN_FULL;
|
||
|
|
dpn[i].simple_ch_prep_sm = true;
|
||
|
|
dpn[i].ch_prep_timeout = 10;
|
||
|
|
i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* do this again for sink now */
|
||
|
|
nval = hweight32(prop->sink_ports);
|
||
|
|
prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
|
||
|
|
sizeof(*prop->sink_dpn_prop),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (!prop->sink_dpn_prop)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
j = 0;
|
||
|
|
dpn = prop->sink_dpn_prop;
|
||
|
|
addr = prop->sink_ports;
|
||
|
|
for_each_set_bit(bit, &addr, 32) {
|
||
|
|
dpn[j].num = bit;
|
||
|
|
dpn[j].type = SDW_DPN_FULL;
|
||
|
|
dpn[j].simple_ch_prep_sm = true;
|
||
|
|
dpn[j].ch_prep_timeout = 10;
|
||
|
|
j++;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* set the timeout values */
|
||
|
|
prop->clk_stop_timeout = 20;
|
||
|
|
|
||
|
|
/* wake-up event */
|
||
|
|
prop->wake_capable = 1;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int rt711_bus_config(struct sdw_slave *slave,
|
||
|
|
struct sdw_bus_params *params)
|
||
|
|
{
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
memcpy(&rt711->params, params, sizeof(*params));
|
||
|
|
|
||
|
|
ret = rt711_clock_config(&slave->dev);
|
||
|
|
if (ret < 0)
|
||
|
|
dev_err(&slave->dev, "Invalid clk config");
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int rt711_interrupt_callback(struct sdw_slave *slave,
|
||
|
|
struct sdw_slave_intr_status *status)
|
||
|
|
{
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev);
|
||
|
|
|
||
|
|
dev_dbg(&slave->dev,
|
||
|
|
"%s control_port_stat=%x", __func__, status->control_port);
|
||
|
|
|
||
|
|
mutex_lock(&rt711->disable_irq_lock);
|
||
|
|
if (status->control_port & 0x4 && !rt711->disable_irq) {
|
||
|
|
mod_delayed_work(system_power_efficient_wq,
|
||
|
|
&rt711->jack_detect_work, msecs_to_jiffies(250));
|
||
|
|
}
|
||
|
|
mutex_unlock(&rt711->disable_irq_lock);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct sdw_slave_ops rt711_slave_ops = {
|
||
|
|
.read_prop = rt711_read_prop,
|
||
|
|
.interrupt_callback = rt711_interrupt_callback,
|
||
|
|
.update_status = rt711_update_status,
|
||
|
|
.bus_config = rt711_bus_config,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int rt711_sdw_probe(struct sdw_slave *slave,
|
||
|
|
const struct sdw_device_id *id)
|
||
|
|
{
|
||
|
|
struct regmap *sdw_regmap, *regmap;
|
||
|
|
|
||
|
|
/* Regmap Initialization */
|
||
|
|
sdw_regmap = devm_regmap_init_sdw(slave, &rt711_sdw_regmap);
|
||
|
|
if (IS_ERR(sdw_regmap))
|
||
|
|
return PTR_ERR(sdw_regmap);
|
||
|
|
|
||
|
|
regmap = devm_regmap_init(&slave->dev, NULL,
|
||
|
|
&slave->dev, &rt711_regmap);
|
||
|
|
if (IS_ERR(regmap))
|
||
|
|
return PTR_ERR(regmap);
|
||
|
|
|
||
|
|
rt711_init(&slave->dev, sdw_regmap, regmap, slave);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int rt711_sdw_remove(struct sdw_slave *slave)
|
||
|
|
{
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(&slave->dev);
|
||
|
|
|
||
|
|
if (rt711->hw_init) {
|
||
|
|
cancel_delayed_work_sync(&rt711->jack_detect_work);
|
||
|
|
cancel_delayed_work_sync(&rt711->jack_btn_check_work);
|
||
|
|
cancel_work_sync(&rt711->calibration_work);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rt711->first_hw_init)
|
||
|
|
pm_runtime_disable(&slave->dev);
|
||
|
|
|
||
|
|
mutex_destroy(&rt711->calibrate_mutex);
|
||
|
|
mutex_destroy(&rt711->disable_irq_lock);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct sdw_device_id rt711_id[] = {
|
||
|
|
SDW_SLAVE_ENTRY_EXT(0x025d, 0x711, 0x2, 0, 0),
|
||
|
|
{},
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(sdw, rt711_id);
|
||
|
|
|
||
|
|
static int __maybe_unused rt711_dev_suspend(struct device *dev)
|
||
|
|
{
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(dev);
|
||
|
|
|
||
|
|
if (!rt711->hw_init)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
cancel_delayed_work_sync(&rt711->jack_detect_work);
|
||
|
|
cancel_delayed_work_sync(&rt711->jack_btn_check_work);
|
||
|
|
cancel_work_sync(&rt711->calibration_work);
|
||
|
|
|
||
|
|
regcache_cache_only(rt711->regmap, true);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __maybe_unused rt711_dev_system_suspend(struct device *dev)
|
||
|
|
{
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(dev);
|
||
|
|
struct sdw_slave *slave = dev_to_sdw_dev(dev);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!rt711->hw_init)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* prevent new interrupts from being handled after the
|
||
|
|
* deferred work completes and before the parent disables
|
||
|
|
* interrupts on the link
|
||
|
|
*/
|
||
|
|
mutex_lock(&rt711->disable_irq_lock);
|
||
|
|
rt711->disable_irq = true;
|
||
|
|
ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1,
|
||
|
|
SDW_SCP_INT1_IMPL_DEF, 0);
|
||
|
|
mutex_unlock(&rt711->disable_irq_lock);
|
||
|
|
|
||
|
|
if (ret < 0) {
|
||
|
|
/* log but don't prevent suspend from happening */
|
||
|
|
dev_dbg(&slave->dev, "%s: could not disable imp-def interrupts\n:", __func__);
|
||
|
|
}
|
||
|
|
|
||
|
|
return rt711_dev_suspend(dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define RT711_PROBE_TIMEOUT 5000
|
||
|
|
|
||
|
|
static int __maybe_unused rt711_dev_resume(struct device *dev)
|
||
|
|
{
|
||
|
|
struct sdw_slave *slave = dev_to_sdw_dev(dev);
|
||
|
|
struct rt711_priv *rt711 = dev_get_drvdata(dev);
|
||
|
|
unsigned long time;
|
||
|
|
|
||
|
|
if (!rt711->first_hw_init)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (!slave->unattach_request)
|
||
|
|
goto regmap_sync;
|
||
|
|
|
||
|
|
time = wait_for_completion_timeout(&slave->initialization_complete,
|
||
|
|
msecs_to_jiffies(RT711_PROBE_TIMEOUT));
|
||
|
|
if (!time) {
|
||
|
|
dev_err(&slave->dev, "Initialization not complete, timed out\n");
|
||
|
|
return -ETIMEDOUT;
|
||
|
|
}
|
||
|
|
|
||
|
|
regmap_sync:
|
||
|
|
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 <shumingf@realtek.com>");
|
||
|
|
MODULE_LICENSE("GPL");
|