summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/rt715-sdw.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sound/soc/codecs/rt715-sdw.c585
1 files changed, 585 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt715-sdw.c b/sound/soc/codecs/rt715-sdw.c
new file mode 100644
index 000000000..361a90ae5
--- /dev/null
+++ b/sound/soc/codecs/rt715-sdw.c
@@ -0,0 +1,585 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * rt715-sdw.c -- rt715 ALSA SoC audio driver
+ *
+ * Copyright(c) 2019 Realtek Semiconductor Corp.
+ *
+ * ALC715 ASoC Codec Driver based Intel Dummy SdW codec driver
+ *
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/soundwire/sdw.h>
+#include <linux/soundwire/sdw_type.h>
+#include <linux/soundwire/sdw_registers.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include "rt715.h"
+#include "rt715-sdw.h"
+
+static bool rt715_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00e0 ... 0x00e5:
+ case 0x00ee ... 0x00ef:
+ case 0x00f0 ... 0x00f5:
+ case 0x00fe ... 0x00ff:
+ case 0x02e0:
+ case 0x02f0:
+ case 0x04e0:
+ case 0x04f0:
+ case 0x06e0:
+ case 0x06f0:
+ case 0x2000 ... 0x2016:
+ case 0x201a ... 0x2027:
+ case 0x2029 ... 0x202a:
+ case 0x202d ... 0x2034:
+ case 0x2200 ... 0x2204:
+ case 0x2206 ... 0x2212:
+ case 0x2220 ... 0x2223:
+ case 0x2230 ... 0x2239:
+ case 0x22f0 ... 0x22f3:
+ case 0x3122:
+ case 0x3123:
+ case 0x3124:
+ case 0x3125:
+ case 0x3607:
+ case 0x3608:
+ case 0x3609:
+ case 0x3610:
+ case 0x3611:
+ case 0x3627:
+ case 0x3712:
+ case 0x3713:
+ case 0x3718:
+ case 0x3719:
+ case 0x371a:
+ case 0x371b:
+ case 0x371d:
+ case 0x3729:
+ case 0x385e:
+ case 0x3859:
+ case 0x4c12:
+ case 0x4c13:
+ case 0x4c1d:
+ case 0x4c29:
+ case 0x4d12:
+ case 0x4d13:
+ case 0x4d1d:
+ case 0x4d29:
+ case 0x4e12:
+ case 0x4e13:
+ case 0x4e1d:
+ case 0x4e29:
+ case 0x4f12:
+ case 0x4f13:
+ case 0x4f1d:
+ case 0x4f29:
+ case 0x7207:
+ case 0x7208:
+ case 0x7209:
+ case 0x7227:
+ case 0x7307:
+ case 0x7308:
+ case 0x7309:
+ case 0x7312:
+ case 0x7313:
+ case 0x7318:
+ case 0x7319:
+ case 0x731a:
+ case 0x731b:
+ case 0x731d:
+ case 0x7327:
+ case 0x7329:
+ case 0x8287:
+ case 0x8288:
+ case 0x8289:
+ case 0x82a7:
+ case 0x8387:
+ case 0x8388:
+ case 0x8389:
+ case 0x8392:
+ case 0x8393:
+ case 0x8398:
+ case 0x8399:
+ case 0x839a:
+ case 0x839b:
+ case 0x839d:
+ case 0x83a7:
+ case 0x83a9:
+ case 0x752039:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt715_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00e5:
+ case 0x00f0:
+ case 0x00f3:
+ case 0x00f5:
+ case 0x2009:
+ case 0x2016:
+ case 0x201b:
+ case 0x201c:
+ case 0x201d:
+ case 0x201f:
+ case 0x2023:
+ case 0x2230:
+ case 0x200b ... 0x200e: /* i2c read */
+ case 0x2012 ... 0x2015: /* HD-A read */
+ case 0x202d ... 0x202f: /* BRA */
+ case 0x2201 ... 0x2212: /* i2c debug */
+ case 0x2220 ... 0x2223: /* decoded HD-A */
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int rt715_sdw_read(void *context, unsigned int reg, unsigned int *val)
+{
+ struct device *dev = context;
+ struct rt715_priv *rt715 = dev_get_drvdata(dev);
+ unsigned int sdw_data_3, sdw_data_2, sdw_data_1, sdw_data_0;
+ unsigned int reg2 = 0, reg3 = 0, reg4 = 0, mask, nid, val2;
+ unsigned int is_hda_reg = 1, is_index_reg = 0;
+ int ret;
+
+ if (reg > 0xffff)
+ is_index_reg = 1;
+
+ mask = reg & 0xf000;
+
+ if (is_index_reg) { /* index registers */
+ val2 = reg & 0xff;
+ reg = reg >> 8;
+ nid = reg & 0xff;
+ ret = regmap_write(rt715->sdw_regmap, reg, 0);
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2, val2);
+ if (ret < 0)
+ return ret;
+
+ reg3 = RT715_PRIV_DATA_R_H | nid;
+ ret = regmap_write(rt715->sdw_regmap, reg3,
+ ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg4 = reg3 + 0x1000;
+ reg4 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg4, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x3000) {
+ reg += 0x8000;
+ ret = regmap_write(rt715->sdw_regmap, reg, *val);
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x7000) {
+ reg += 0x2000;
+ reg |= 0x800;
+ ret = regmap_write(rt715->sdw_regmap, reg,
+ ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if ((reg & 0xff00) == 0x8300) { /* for R channel */
+ reg2 = reg - 0x1000;
+ reg2 &= ~0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2,
+ ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(rt715->sdw_regmap, reg, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x9000) {
+ ret = regmap_write(rt715->sdw_regmap, reg,
+ ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0xb000) {
+ ret = regmap_write(rt715->sdw_regmap, reg, *val);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = regmap_read(rt715->sdw_regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ is_hda_reg = 0;
+ }
+
+ if (is_hda_reg || is_index_reg) {
+ sdw_data_3 = 0;
+ sdw_data_2 = 0;
+ sdw_data_1 = 0;
+ sdw_data_0 = 0;
+ ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_3,
+ &sdw_data_3);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_2,
+ &sdw_data_2);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_1,
+ &sdw_data_1);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt715->sdw_regmap, RT715_READ_HDA_0,
+ &sdw_data_0);
+ if (ret < 0)
+ return ret;
+ *val = ((sdw_data_3 & 0xff) << 24) |
+ ((sdw_data_2 & 0xff) << 16) |
+ ((sdw_data_1 & 0xff) << 8) | (sdw_data_0 & 0xff);
+ }
+
+ if (is_hda_reg == 0)
+ dev_dbg(dev, "[%s] %04x => %08x\n", __func__, reg, *val);
+ else if (is_index_reg)
+ dev_dbg(dev, "[%s] %04x %04x %04x %04x => %08x\n", __func__,
+ reg, reg2, reg3, reg4, *val);
+ else
+ dev_dbg(dev, "[%s] %04x %04x => %08x\n",
+ __func__, reg, reg2, *val);
+
+ return 0;
+}
+
+static int rt715_sdw_write(void *context, unsigned int reg, unsigned int val)
+{
+ struct device *dev = context;
+ struct rt715_priv *rt715 = dev_get_drvdata(dev);
+ unsigned int reg2 = 0, reg3, reg4, nid, mask, val2;
+ unsigned int is_index_reg = 0;
+ int ret;
+
+ if (reg > 0xffff)
+ is_index_reg = 1;
+
+ mask = reg & 0xf000;
+
+ if (is_index_reg) { /* index registers */
+ val2 = reg & 0xff;
+ reg = reg >> 8;
+ nid = reg & 0xff;
+ ret = regmap_write(rt715->sdw_regmap, reg, 0);
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2, val2);
+ if (ret < 0)
+ return ret;
+
+ reg3 = RT715_PRIV_DATA_W_H | nid;
+ ret = regmap_write(rt715->sdw_regmap, reg3,
+ ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg4 = reg3 + 0x1000;
+ reg4 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg4, (val & 0xff));
+ if (ret < 0)
+ return ret;
+ is_index_reg = 1;
+ } else if (reg < 0x4fff) {
+ ret = regmap_write(rt715->sdw_regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ } else if (reg == RT715_FUNC_RESET) {
+ ret = regmap_write(rt715->sdw_regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x7000) {
+ ret = regmap_write(rt715->sdw_regmap, reg,
+ ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2, (val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if ((reg & 0xff00) == 0x8300) { /* for R channel */
+ reg2 = reg - 0x1000;
+ reg2 &= ~0x80;
+ ret = regmap_write(rt715->sdw_regmap, reg2,
+ ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(rt715->sdw_regmap, reg, (val & 0xff));
+ if (ret < 0)
+ return ret;
+ }
+
+ if (reg2 == 0)
+ dev_dbg(dev, "[%s] %04x <= %04x\n", __func__, reg, val);
+ else if (is_index_reg)
+ dev_dbg(dev, "[%s] %04x %04x %04x %04x <= %04x %04x\n",
+ __func__, reg, reg2, reg3, reg4, val2, val);
+ else
+ dev_dbg(dev, "[%s] %04x %04x <= %04x\n",
+ __func__, reg, reg2, val);
+
+ return 0;
+}
+
+static const struct regmap_config rt715_regmap = {
+ .reg_bits = 24,
+ .val_bits = 32,
+ .readable_reg = rt715_readable_register, /* Readable registers */
+ .volatile_reg = rt715_volatile_register, /* volatile register */
+ .max_register = 0x752039, /* Maximum number of register */
+ .reg_defaults = rt715_reg_defaults, /* Defaults */
+ .num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+ .reg_read = rt715_sdw_read,
+ .reg_write = rt715_sdw_write,
+};
+
+static const struct regmap_config rt715_sdw_regmap = {
+ .name = "sdw",
+ .reg_bits = 32, /* Total register space for SDW */
+ .val_bits = 8, /* Total number of bits in register */
+ .max_register = 0xff01, /* Maximum number of register */
+ .cache_type = REGCACHE_NONE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+int hda_to_sdw(unsigned int nid, unsigned int verb, unsigned int payload,
+ unsigned int *sdw_addr_h, unsigned int *sdw_data_h,
+ unsigned int *sdw_addr_l, unsigned int *sdw_data_l)
+{
+ unsigned int offset_h, offset_l, e_verb;
+
+ if (((verb & 0xff) != 0) || verb == 0xf00) { /* 12 bits command */
+ if (verb == 0x7ff) /* special case */
+ offset_h = 0;
+ else
+ offset_h = 0x3000;
+
+ if (verb & 0x800) /* get command */
+ e_verb = (verb - 0xf00) | 0x80;
+ else /* set command */
+ e_verb = (verb - 0x700);
+
+ *sdw_data_h = payload; /* 7 bits payload */
+ *sdw_addr_l = *sdw_data_l = 0;
+ } else { /* 4 bits command */
+ if ((verb & 0x800) == 0x800) { /* read */
+ offset_h = 0x9000;
+ offset_l = 0xa000;
+ } else { /* write */
+ offset_h = 0x7000;
+ offset_l = 0x8000;
+ }
+ e_verb = verb >> 8;
+ *sdw_data_h = (payload >> 8); /* 16 bits payload [15:8] */
+ *sdw_addr_l = (e_verb << 8) | nid | 0x80; /* 0x80: valid bit */
+ *sdw_addr_l += offset_l;
+ *sdw_data_l = payload & 0xff;
+ }
+
+ *sdw_addr_h = (e_verb << 8) | nid;
+ *sdw_addr_h += offset_h;
+
+ return 0;
+}
+EXPORT_SYMBOL(hda_to_sdw);
+
+static int rt715_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ struct rt715_priv *rt715 = dev_get_drvdata(&slave->dev);
+
+ /* Update the status */
+ rt715->status = status;
+ /*
+ * Perform initialization only if slave status is present and
+ * hw_init flag is false
+ */
+ if (rt715->hw_init || rt715->status != SDW_SLAVE_ATTACHED)
+ return 0;
+
+ /* perform I/O transfers required for Slave initialization */
+ return rt715_io_init(&slave->dev, slave);
+}
+
+static int rt715_read_prop(struct sdw_slave *slave)
+{
+ struct sdw_slave_prop *prop = &slave->prop;
+ int nval, i;
+ u32 bit;
+ unsigned long addr;
+ struct sdw_dpn_prop *dpn;
+
+ prop->scp_int1_mask = SDW_SCP_INT1_IMPL_DEF | SDW_SCP_INT1_BUS_CLASH |
+ SDW_SCP_INT1_PARITY;
+ prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
+
+ prop->paging_support = false;
+
+ /* first we need to allocate memory for set bits in port lists */
+ prop->source_ports = 0x50;/* BITMAP: 01010000 */
+ prop->sink_ports = 0x0; /* BITMAP: 00000000 */
+
+ 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;
+
+ dpn = prop->src_dpn_prop;
+ i = 0;
+ addr = prop->source_ports;
+ for_each_set_bit(bit, &addr, 32) {
+ dpn[i].num = bit;
+ dpn[i].simple_ch_prep_sm = true;
+ dpn[i].ch_prep_timeout = 10;
+ i++;
+ }
+
+ /* set the timeout values */
+ prop->clk_stop_timeout = 20;
+
+ /* wake-up event */
+ prop->wake_capable = 1;
+
+ return 0;
+}
+
+static int rt715_bus_config(struct sdw_slave *slave,
+ struct sdw_bus_params *params)
+{
+ struct rt715_priv *rt715 = dev_get_drvdata(&slave->dev);
+ int ret;
+
+ memcpy(&rt715->params, params, sizeof(*params));
+
+ ret = rt715_clock_config(&slave->dev);
+ if (ret < 0)
+ dev_err(&slave->dev, "Invalid clk config");
+
+ return 0;
+}
+
+static 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 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 2000
+
+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");
+ 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,
+ .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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 16:00:27 +0000