601 lines
14 KiB
C
601 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* rt715-sdw.c -- rt715 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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* ALC715 ASoC Codec Driver based Intel Dummy SdW codec driver
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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/of.h>
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#include <linux/regmap.h>
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#include <sound/soc.h>
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#include "rt715.h"
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#include "rt715-sdw.h"
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static bool rt715_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x00e0 ... 0x00e5:
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case 0x00ee ... 0x00ef:
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case 0x00f0 ... 0x00f5:
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case 0x00fe ... 0x00ff:
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case 0x02e0:
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case 0x02f0:
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case 0x04e0:
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case 0x04f0:
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case 0x06e0:
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case 0x06f0:
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case 0x2000 ... 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 0x2200 ... 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 0x22f0 ... 0x22f3:
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case 0x3122:
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case 0x3123:
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case 0x3124:
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case 0x3125:
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case 0x3607:
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case 0x3608:
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case 0x3609:
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case 0x3610:
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case 0x3611:
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case 0x3627:
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case 0x3712:
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case 0x3713:
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case 0x3718:
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case 0x3719:
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case 0x371a:
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case 0x371b:
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case 0x371d:
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case 0x3729:
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case 0x385e:
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case 0x3859:
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case 0x4c12:
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case 0x4c13:
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case 0x4c1d:
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case 0x4c29:
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case 0x4d12:
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case 0x4d13:
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case 0x4d1d:
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case 0x4d29:
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case 0x4e12:
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case 0x4e13:
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case 0x4e1d:
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case 0x4e29:
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case 0x4f12:
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case 0x4f13:
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case 0x4f1d:
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case 0x4f29:
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case 0x7207:
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case 0x7208:
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case 0x7209:
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case 0x7227:
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case 0x7307:
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case 0x7308:
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case 0x7309:
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case 0x7312:
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case 0x7313:
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case 0x7318:
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case 0x7319:
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case 0x731a:
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case 0x731b:
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case 0x731d:
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case 0x7327:
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case 0x7329:
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case 0x8287:
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case 0x8288:
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case 0x8289:
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case 0x82a7:
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case 0x8387:
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case 0x8388:
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case 0x8389:
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case 0x8392:
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case 0x8393:
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case 0x8398:
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case 0x8399:
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case 0x839a:
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case 0x839b:
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case 0x839d:
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case 0x83a7:
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case 0x83a9:
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case 0x752001:
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case 0x752039:
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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_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x00e5:
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case 0x00f0:
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case 0x00f3:
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case 0x00f5:
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case 0x2009:
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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 0x2023:
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case 0x2230:
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case 0x200b ... 0x200e: /* i2c read */
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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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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 rt715_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 rt715_priv *rt715 = 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(rt715->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(rt715->sdw_regmap, reg2, val2);
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if (ret < 0)
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return ret;
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reg3 = RT715_PRIV_DATA_R_H | nid;
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ret = regmap_write(rt715->sdw_regmap, reg3,
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((*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(rt715->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(rt715->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(rt715->sdw_regmap, reg,
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((*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(rt715->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(rt715->sdw_regmap, reg2,
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((*val >> 8) & 0xff));
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if (ret < 0)
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return ret;
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ret = regmap_write(rt715->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(rt715->sdw_regmap, reg,
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((*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(rt715->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(rt715->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(rt715->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(rt715->sdw_regmap, RT715_READ_HDA_3,
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&sdw_data_3);
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if (ret < 0)
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return ret;
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ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_2,
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&sdw_data_2);
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if (ret < 0)
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return ret;
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ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_1,
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&sdw_data_1);
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if (ret < 0)
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return ret;
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ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_0,
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&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", __func__,
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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 rt715_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 rt715_priv *rt715 = 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(rt715->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(rt715->sdw_regmap, reg2, val2);
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if (ret < 0)
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return ret;
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reg3 = RT715_PRIV_DATA_W_H | nid;
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ret = regmap_write(rt715->sdw_regmap, reg3,
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((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(rt715->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(rt715->sdw_regmap, reg, val);
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if (ret < 0)
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return ret;
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} else if (reg == RT715_FUNC_RESET) {
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ret = regmap_write(rt715->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(rt715->sdw_regmap, reg,
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((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(rt715->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(rt715->sdw_regmap, reg2,
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((val >> 8) & 0xff));
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if (ret < 0)
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return ret;
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ret = regmap_write(rt715->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 rt715_regmap = {
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.reg_bits = 24,
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.val_bits = 32,
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.readable_reg = rt715_readable_register, /* Readable registers */
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.volatile_reg = rt715_volatile_register, /* volatile register */
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.max_register = 0x752039, /* Maximum number of register */
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.reg_defaults = rt715_reg_defaults, /* Defaults */
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.num_reg_defaults = ARRAY_SIZE(rt715_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 = rt715_sdw_read,
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.reg_write = rt715_sdw_write,
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};
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static const struct regmap_config rt715_sdw_regmap = {
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.name = "sdw",
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.reg_bits = 32, /* Total register space for SDW */
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.val_bits = 8, /* Total number of bits in register */
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.max_register = 0xff01, /* Maximum number of register */
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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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int hda_to_sdw(unsigned int nid, unsigned int verb, unsigned int payload,
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unsigned int *sdw_addr_h, unsigned int *sdw_data_h,
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unsigned int *sdw_addr_l, unsigned int *sdw_data_l)
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{
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unsigned int offset_h, offset_l, e_verb;
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if (((verb & 0xff) != 0) || verb == 0xf00) { /* 12 bits command */
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if (verb == 0x7ff) /* special case */
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offset_h = 0;
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else
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offset_h = 0x3000;
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if (verb & 0x800) /* get command */
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e_verb = (verb - 0xf00) | 0x80;
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else /* set command */
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e_verb = (verb - 0x700);
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*sdw_data_h = payload; /* 7 bits payload */
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*sdw_addr_l = *sdw_data_l = 0;
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} else { /* 4 bits command */
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if ((verb & 0x800) == 0x800) { /* read */
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offset_h = 0x9000;
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offset_l = 0xa000;
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} else { /* write */
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offset_h = 0x7000;
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offset_l = 0x8000;
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}
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e_verb = verb >> 8;
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*sdw_data_h = (payload >> 8); /* 16 bits payload [15:8] */
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*sdw_addr_l = (e_verb << 8) | nid | 0x80; /* 0x80: valid bit */
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*sdw_addr_l += offset_l;
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*sdw_data_l = payload & 0xff;
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}
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*sdw_addr_h = (e_verb << 8) | nid;
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*sdw_addr_h += offset_h;
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return 0;
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}
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EXPORT_SYMBOL(hda_to_sdw);
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static int rt715_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_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_io_init(&slave->dev, slave);
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}
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static int rt715_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->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 = 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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/* 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 rt715_bus_config(struct sdw_slave *slave,
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struct sdw_bus_params *params)
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{
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struct rt715_priv *rt715 = dev_get_drvdata(&slave->dev);
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int ret;
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memcpy(&rt715->params, params, sizeof(*params));
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ret = rt715_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 0;
|
|
}
|
|
|
|
static const struct sdw_slave_ops rt715_slave_ops = {
|
|
.read_prop = rt715_read_prop,
|
|
.update_status = rt715_update_status,
|
|
.bus_config = rt715_bus_config,
|
|
};
|
|
|
|
static int rt715_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, &rt715_sdw_regmap);
|
|
if (IS_ERR(sdw_regmap))
|
|
return PTR_ERR(sdw_regmap);
|
|
|
|
regmap = devm_regmap_init(&slave->dev, NULL, &slave->dev,
|
|
&rt715_regmap);
|
|
if (IS_ERR(regmap))
|
|
return PTR_ERR(regmap);
|
|
|
|
rt715_init(&slave->dev, sdw_regmap, regmap, slave);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rt715_sdw_remove(struct sdw_slave *slave)
|
|
{
|
|
struct rt715_priv *rt715 = dev_get_drvdata(&slave->dev);
|
|
|
|
if (rt715->first_hw_init)
|
|
pm_runtime_disable(&slave->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct sdw_device_id rt715_id[] = {
|
|
SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x2, 0, 0),
|
|
SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x2, 0, 0),
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(sdw, rt715_id);
|
|
|
|
static int __maybe_unused rt715_dev_suspend(struct device *dev)
|
|
{
|
|
struct rt715_priv *rt715 = dev_get_drvdata(dev);
|
|
|
|
if (!rt715->hw_init)
|
|
return 0;
|
|
|
|
regcache_cache_only(rt715->regmap, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define RT715_PROBE_TIMEOUT 5000
|
|
|
|
static int __maybe_unused rt715_dev_resume(struct device *dev)
|
|
{
|
|
struct sdw_slave *slave = dev_to_sdw_dev(dev);
|
|
struct rt715_priv *rt715 = dev_get_drvdata(dev);
|
|
unsigned long time;
|
|
|
|
if (!rt715->first_hw_init)
|
|
return 0;
|
|
|
|
if (!slave->unattach_request)
|
|
goto regmap_sync;
|
|
|
|
time = wait_for_completion_timeout(&slave->initialization_complete,
|
|
msecs_to_jiffies(RT715_PROBE_TIMEOUT));
|
|
if (!time) {
|
|
dev_err(&slave->dev, "Initialization not complete, timed out\n");
|
|
sdw_show_ping_status(slave->bus, true);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
regmap_sync:
|
|
slave->unattach_request = 0;
|
|
regcache_cache_only(rt715->regmap, false);
|
|
regcache_sync_region(rt715->regmap, 0x3000, 0x8fff);
|
|
regcache_sync_region(rt715->regmap, 0x752039, 0x752039);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops rt715_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(rt715_dev_suspend, rt715_dev_resume)
|
|
SET_RUNTIME_PM_OPS(rt715_dev_suspend, rt715_dev_resume, NULL)
|
|
};
|
|
|
|
static struct sdw_driver rt715_sdw_driver = {
|
|
.driver = {
|
|
.name = "rt715",
|
|
.owner = THIS_MODULE,
|
|
.pm = &rt715_pm,
|
|
},
|
|
.probe = rt715_sdw_probe,
|
|
.remove = rt715_sdw_remove,
|
|
.ops = &rt715_slave_ops,
|
|
.id_table = rt715_id,
|
|
};
|
|
module_sdw_driver(rt715_sdw_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC RT715 driver SDW");
|
|
MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
|
|
MODULE_LICENSE("GPL v2");
|