495 lines
14 KiB
C
495 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// rt711-sdw-sdca.c -- rt711 SDCA ALSA SoC audio driver
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//
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// Copyright(c) 2021 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_registers.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include "rt711-sdca.h"
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#include "rt711-sdca-sdw.h"
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static bool rt711_sdca_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x201a ... 0x2027:
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case 0x2029 ... 0x202a:
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case 0x202d ... 0x2034:
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case 0x2200 ... 0x2204:
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case 0x2206 ... 0x2212:
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case 0x2220 ... 0x2223:
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case 0x2230 ... 0x2239:
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case 0x2f01 ... 0x2f0f:
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case 0x2f30 ... 0x2f36:
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case 0x2f50 ... 0x2f5a:
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case 0x2f60:
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case 0x3200 ... 0x3212:
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_GE49, RT711_SDCA_CTL_SELECTED_MODE, 0):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_GE49, RT711_SDCA_CTL_DETECTED_MODE, 0):
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case SDW_SDCA_CTL(FUNC_NUM_HID, RT711_SDCA_ENT_HID01, RT711_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
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SDW_SDCA_CTL(FUNC_NUM_HID, RT711_SDCA_ENT_HID01, RT711_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
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case RT711_BUF_ADDR_HID1 ... RT711_BUF_ADDR_HID2:
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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_sdca_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x201b:
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case 0x201c:
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case 0x201d:
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case 0x201f:
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case 0x2021:
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case 0x2023:
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case 0x2230:
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case 0x202d ... 0x202f: /* BRA */
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case 0x2200 ... 0x2212: /* i2c debug */
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case RT711_RC_CAL_STATUS:
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_GE49, RT711_SDCA_CTL_DETECTED_MODE, 0):
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case SDW_SDCA_CTL(FUNC_NUM_HID, RT711_SDCA_ENT_HID01, RT711_SDCA_CTL_HIDTX_CURRENT_OWNER, 0) ...
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SDW_SDCA_CTL(FUNC_NUM_HID, RT711_SDCA_ENT_HID01, RT711_SDCA_CTL_HIDTX_MESSAGE_LENGTH, 0):
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case RT711_BUF_ADDR_HID1 ... RT711_BUF_ADDR_HID2:
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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_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x2000000 ... 0x20000ff:
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case 0x5600000 ... 0x56000ff:
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case 0x5700000 ... 0x57000ff:
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case 0x5800000 ... 0x58000ff:
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case 0x5900000 ... 0x59000ff:
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case 0x5b00000 ... 0x5b000ff:
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case 0x5f00000 ... 0x5f000ff:
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case 0x6100000 ... 0x61000ff:
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_USER_FU05, RT711_SDCA_CTL_FU_VOLUME, CH_L):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_USER_FU05, RT711_SDCA_CTL_FU_VOLUME, CH_R):
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case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT711_SDCA_ENT_USER_FU1E, RT711_SDCA_CTL_FU_VOLUME, CH_L):
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case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT711_SDCA_ENT_USER_FU1E, RT711_SDCA_CTL_FU_VOLUME, CH_R):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_USER_FU0F, RT711_SDCA_CTL_FU_VOLUME, CH_L):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_USER_FU0F, RT711_SDCA_CTL_FU_VOLUME, CH_R):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_PLATFORM_FU44, RT711_SDCA_CTL_FU_CH_GAIN, CH_L):
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case SDW_SDCA_CTL(FUNC_NUM_JACK_CODEC, RT711_SDCA_ENT_PLATFORM_FU44, RT711_SDCA_CTL_FU_CH_GAIN, CH_R):
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case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT711_SDCA_ENT_PLATFORM_FU15, RT711_SDCA_CTL_FU_CH_GAIN, CH_L):
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case SDW_SDCA_CTL(FUNC_NUM_MIC_ARRAY, RT711_SDCA_ENT_PLATFORM_FU15, RT711_SDCA_CTL_FU_CH_GAIN, CH_R):
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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_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case 0x2000000:
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case 0x200001a:
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case 0x2000046:
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case 0x2000080:
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case 0x2000081:
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case 0x2000083:
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case 0x5800000:
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case 0x5800001:
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case 0x5f00001:
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case 0x6100008:
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return true;
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default:
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return false;
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}
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}
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static const struct regmap_config rt711_sdca_regmap = {
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.reg_bits = 32,
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.val_bits = 8,
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.readable_reg = rt711_sdca_readable_register,
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.volatile_reg = rt711_sdca_volatile_register,
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.max_register = 0x44ffffff,
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.reg_defaults = rt711_sdca_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(rt711_sdca_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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};
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static const struct regmap_config rt711_sdca_mbq_regmap = {
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.name = "sdw-mbq",
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.reg_bits = 32,
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.val_bits = 16,
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.readable_reg = rt711_sdca_mbq_readable_register,
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.volatile_reg = rt711_sdca_mbq_volatile_register,
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.max_register = 0x40800f12,
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.reg_defaults = rt711_sdca_mbq_defaults,
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.num_reg_defaults = ARRAY_SIZE(rt711_sdca_mbq_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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};
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static int rt711_sdca_update_status(struct sdw_slave *slave,
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enum sdw_slave_status status)
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{
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struct rt711_sdca_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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if (status == SDW_SLAVE_ATTACHED) {
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if (rt711->hs_jack) {
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/*
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* Due to the SCP_SDCA_INTMASK will be cleared by any reset, and then
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* if the device attached again, we will need to set the setting back.
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* It could avoid losing the jack detection interrupt.
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* This also could sync with the cache value as the rt711_sdca_jack_init set.
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*/
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sdw_write_no_pm(rt711->slave, SDW_SCP_SDCA_INTMASK1,
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SDW_SCP_SDCA_INTMASK_SDCA_0);
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sdw_write_no_pm(rt711->slave, SDW_SCP_SDCA_INTMASK2,
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SDW_SCP_SDCA_INTMASK_SDCA_8);
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}
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}
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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_sdca_io_init(&slave->dev, slave);
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}
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static int rt711_sdca_read_prop(struct sdw_slave *slave)
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{
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struct sdw_slave_prop *prop = &slave->prop;
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int nval;
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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_BUS_CLASH | SDW_SCP_INT1_PARITY;
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prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
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prop->is_sdca = true;
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prop->paging_support = true;
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/* first we need to allocate memory for set bits in port lists */
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prop->source_ports = 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), 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), 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 = 700;
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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_sdca_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_sdca_priv *rt711 = dev_get_drvdata(&slave->dev);
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int ret, stat;
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int count = 0, retry = 3;
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unsigned int sdca_cascade, scp_sdca_stat1, scp_sdca_stat2 = 0;
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dev_dbg(&slave->dev,
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"%s control_port_stat=%x, sdca_cascade=%x", __func__,
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status->control_port, status->sdca_cascade);
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if (cancel_delayed_work_sync(&rt711->jack_detect_work)) {
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dev_warn(&slave->dev, "%s the pending delayed_work was cancelled", __func__);
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/* avoid the HID owner doesn't change to device */
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if (rt711->scp_sdca_stat2)
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scp_sdca_stat2 = rt711->scp_sdca_stat2;
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}
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/*
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* The critical section below intentionally protects a rather large piece of code.
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* We don't want to allow the system suspend to disable an interrupt while we are
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* processing it, which could be problematic given the quirky SoundWire interrupt
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* scheme. We do want however to prevent new workqueues from being scheduled if
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* the disable_irq flag was set during system suspend.
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*/
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mutex_lock(&rt711->disable_irq_lock);
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT1);
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if (ret < 0)
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goto io_error;
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rt711->scp_sdca_stat1 = ret;
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT2);
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if (ret < 0)
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goto io_error;
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rt711->scp_sdca_stat2 = ret;
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if (scp_sdca_stat2)
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rt711->scp_sdca_stat2 |= scp_sdca_stat2;
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do {
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/* clear flag */
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT1);
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if (ret < 0)
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goto io_error;
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if (ret & SDW_SCP_SDCA_INTMASK_SDCA_0) {
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ret = sdw_write_no_pm(rt711->slave, SDW_SCP_SDCA_INT1,
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SDW_SCP_SDCA_INTMASK_SDCA_0);
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if (ret < 0)
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goto io_error;
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}
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT2);
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if (ret < 0)
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goto io_error;
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if (ret & SDW_SCP_SDCA_INTMASK_SDCA_8) {
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ret = sdw_write_no_pm(rt711->slave, SDW_SCP_SDCA_INT2,
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SDW_SCP_SDCA_INTMASK_SDCA_8);
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if (ret < 0)
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goto io_error;
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}
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/* check if flag clear or not */
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ret = sdw_read_no_pm(rt711->slave, SDW_DP0_INT);
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if (ret < 0)
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goto io_error;
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sdca_cascade = ret & SDW_DP0_SDCA_CASCADE;
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT1);
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if (ret < 0)
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goto io_error;
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scp_sdca_stat1 = ret & SDW_SCP_SDCA_INTMASK_SDCA_0;
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ret = sdw_read_no_pm(rt711->slave, SDW_SCP_SDCA_INT2);
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if (ret < 0)
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goto io_error;
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scp_sdca_stat2 = ret & SDW_SCP_SDCA_INTMASK_SDCA_8;
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stat = scp_sdca_stat1 || scp_sdca_stat2 || sdca_cascade;
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count++;
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} while (stat != 0 && count < retry);
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if (stat)
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dev_warn(&slave->dev,
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"%s scp_sdca_stat1=0x%x, scp_sdca_stat2=0x%x\n", __func__,
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rt711->scp_sdca_stat1, rt711->scp_sdca_stat2);
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if (status->sdca_cascade && !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(30));
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mutex_unlock(&rt711->disable_irq_lock);
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return 0;
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io_error:
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mutex_unlock(&rt711->disable_irq_lock);
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pr_err_ratelimited("IO error in %s, ret %d\n", __func__, ret);
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return ret;
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}
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static const struct sdw_slave_ops rt711_sdca_slave_ops = {
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.read_prop = rt711_sdca_read_prop,
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.interrupt_callback = rt711_sdca_interrupt_callback,
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.update_status = rt711_sdca_update_status,
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};
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static int rt711_sdca_sdw_probe(struct sdw_slave *slave,
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const struct sdw_device_id *id)
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{
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struct regmap *regmap, *mbq_regmap;
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/* Regmap Initialization */
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mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt711_sdca_mbq_regmap);
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if (IS_ERR(mbq_regmap))
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return PTR_ERR(mbq_regmap);
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regmap = devm_regmap_init_sdw(slave, &rt711_sdca_regmap);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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return rt711_sdca_init(&slave->dev, regmap, mbq_regmap, slave);
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}
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static int rt711_sdca_sdw_remove(struct sdw_slave *slave)
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{
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struct rt711_sdca_priv *rt711 = dev_get_drvdata(&slave->dev);
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if (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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}
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if (rt711->first_hw_init)
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pm_runtime_disable(&slave->dev);
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mutex_destroy(&rt711->calibrate_mutex);
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mutex_destroy(&rt711->disable_irq_lock);
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return 0;
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}
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static const struct sdw_device_id rt711_sdca_id[] = {
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SDW_SLAVE_ENTRY_EXT(0x025d, 0x711, 0x3, 0x1, 0),
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{},
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};
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MODULE_DEVICE_TABLE(sdw, rt711_sdca_id);
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static int __maybe_unused rt711_sdca_dev_suspend(struct device *dev)
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{
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struct rt711_sdca_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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regcache_cache_only(rt711->regmap, true);
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regcache_cache_only(rt711->mbq_regmap, true);
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return 0;
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}
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static int __maybe_unused rt711_sdca_dev_system_suspend(struct device *dev)
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{
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struct rt711_sdca_priv *rt711_sdca = dev_get_drvdata(dev);
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struct sdw_slave *slave = dev_to_sdw_dev(dev);
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int ret1, ret2;
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if (!rt711_sdca->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_sdca->disable_irq_lock);
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rt711_sdca->disable_irq = true;
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ret1 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK1,
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SDW_SCP_SDCA_INTMASK_SDCA_0, 0);
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ret2 = sdw_update_no_pm(slave, SDW_SCP_SDCA_INTMASK2,
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SDW_SCP_SDCA_INTMASK_SDCA_8, 0);
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mutex_unlock(&rt711_sdca->disable_irq_lock);
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if (ret1 < 0 || ret2 < 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 SDCA interrupts\n:", __func__);
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}
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return rt711_sdca_dev_suspend(dev);
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}
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|
|
#define RT711_PROBE_TIMEOUT 5000
|
|
|
|
static int __maybe_unused rt711_sdca_dev_resume(struct device *dev)
|
|
{
|
|
struct sdw_slave *slave = dev_to_sdw_dev(dev);
|
|
struct rt711_sdca_priv *rt711 = dev_get_drvdata(dev);
|
|
unsigned long time;
|
|
|
|
if (!rt711->first_hw_init)
|
|
return 0;
|
|
|
|
if (!slave->unattach_request) {
|
|
mutex_lock(&rt711->disable_irq_lock);
|
|
if (rt711->disable_irq == true) {
|
|
sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK1, SDW_SCP_SDCA_INTMASK_SDCA_0);
|
|
sdw_write_no_pm(slave, SDW_SCP_SDCA_INTMASK2, SDW_SCP_SDCA_INTMASK_SDCA_8);
|
|
rt711->disable_irq = false;
|
|
}
|
|
mutex_unlock(&rt711->disable_irq_lock);
|
|
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");
|
|
sdw_show_ping_status(slave->bus, true);
|
|
|
|
return -ETIMEDOUT;
|
|
}
|
|
|
|
regmap_sync:
|
|
slave->unattach_request = 0;
|
|
regcache_cache_only(rt711->regmap, false);
|
|
regcache_sync(rt711->regmap);
|
|
regcache_cache_only(rt711->mbq_regmap, false);
|
|
regcache_sync(rt711->mbq_regmap);
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops rt711_sdca_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(rt711_sdca_dev_system_suspend, rt711_sdca_dev_resume)
|
|
SET_RUNTIME_PM_OPS(rt711_sdca_dev_suspend, rt711_sdca_dev_resume, NULL)
|
|
};
|
|
|
|
static struct sdw_driver rt711_sdca_sdw_driver = {
|
|
.driver = {
|
|
.name = "rt711-sdca",
|
|
.owner = THIS_MODULE,
|
|
.pm = &rt711_sdca_pm,
|
|
},
|
|
.probe = rt711_sdca_sdw_probe,
|
|
.remove = rt711_sdca_sdw_remove,
|
|
.ops = &rt711_sdca_slave_ops,
|
|
.id_table = rt711_sdca_id,
|
|
};
|
|
module_sdw_driver(rt711_sdca_sdw_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC RT711 SDCA SDW driver");
|
|
MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
|
|
MODULE_LICENSE("GPL");
|