ASoC: rt700: add rt700 codec driver
This is the initial codec driver for rt700.
Signed-off-by: Shuming Fan <shumingf@realtek.com>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200110014552.17252-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt700-sdw.c b/sound/soc/codecs/rt700-sdw.c
new file mode 100644
index 0000000..3141036
--- /dev/null
+++ b/sound/soc/codecs/rt700-sdw.c
@@ -0,0 +1,551 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// rt700-sdw.c -- rt700 ALSA SoC audio driver
+//
+// Copyright(c) 2019 Realtek Semiconductor Corp.
+//
+//
+
+#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/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include "rt700.h"
+#include "rt700-sdw.h"
+
+static bool rt700_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x00e0:
+ case 0x00f0:
+ case 0x2000 ... 0x200e:
+ case 0x2012 ... 0x2016:
+ case 0x201a ... 0x2027:
+ case 0x2029 ... 0x202a:
+ case 0x202d ... 0x2034:
+ case 0x2200 ... 0x2204:
+ case 0x2206 ... 0x2212:
+ case 0x2220 ... 0x2223:
+ case 0x2230 ... 0x2231:
+ case 0x3000 ... 0x3fff:
+ case 0x7000 ... 0x7fff:
+ case 0x8300 ... 0x83ff:
+ case 0x9c00 ... 0x9cff:
+ case 0xb900 ... 0xb9ff:
+ case 0x75201a:
+ case 0x752045:
+ case 0x752046:
+ case 0x752048:
+ case 0x75204a:
+ case 0x75206b:
+ case 0x752080:
+ case 0x752081:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt700_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2009:
+ case 0x2016:
+ case 0x201b:
+ case 0x201c:
+ case 0x201d:
+ case 0x201f:
+ case 0x2021:
+ 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 */
+ case 0x9c00 ... 0x9cff:
+ case 0xb900 ... 0xb9ff:
+ case 0xff01:
+ case 0x75201a:
+ case 0x752046:
+ case 0x752080:
+ case 0x752081:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int rt700_sdw_read(void *context, unsigned int reg, unsigned int *val)
+{
+ struct device *dev = context;
+ struct rt700_priv *rt700 = 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(rt700->sdw_regmap, reg, 0);
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt700->sdw_regmap, reg2, val2);
+ if (ret < 0)
+ return ret;
+
+ reg3 = RT700_PRIV_DATA_R_H | nid;
+ ret = regmap_write(rt700->sdw_regmap,
+ reg3, ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg4 = reg3 + 0x1000;
+ reg4 |= 0x80;
+ ret = regmap_write(rt700->sdw_regmap, reg4, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x3000) {
+ reg += 0x8000;
+ ret = regmap_write(rt700->sdw_regmap, reg, *val);
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x7000) {
+ reg += 0x2000;
+ reg |= 0x800;
+ ret = regmap_write(rt700->sdw_regmap,
+ reg, ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt700->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(rt700->sdw_regmap,
+ reg2, ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(rt700->sdw_regmap, reg, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x9000) {
+ ret = regmap_write(rt700->sdw_regmap,
+ reg, ((*val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt700->sdw_regmap, reg2, (*val & 0xff));
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0xb000) {
+ ret = regmap_write(rt700->sdw_regmap, reg, *val);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = regmap_read(rt700->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(rt700->sdw_regmap,
+ RT700_READ_HDA_3, &sdw_data_3);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt700->sdw_regmap,
+ RT700_READ_HDA_2, &sdw_data_2);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt700->sdw_regmap,
+ RT700_READ_HDA_1, &sdw_data_1);
+ if (ret < 0)
+ return ret;
+ ret = regmap_read(rt700->sdw_regmap,
+ RT700_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 rt700_sdw_write(void *context, unsigned int reg, unsigned int val)
+{
+ struct device *dev = context;
+ struct rt700_priv *rt700 = 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(rt700->sdw_regmap, reg, 0);
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt700->sdw_regmap, reg2, val2);
+ if (ret < 0)
+ return ret;
+
+ reg3 = RT700_PRIV_DATA_W_H | nid;
+ ret = regmap_write(rt700->sdw_regmap,
+ reg3, ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg4 = reg3 + 0x1000;
+ reg4 |= 0x80;
+ ret = regmap_write(rt700->sdw_regmap, reg4, (val & 0xff));
+ if (ret < 0)
+ return ret;
+ is_index_reg = 1;
+ } else if (reg < 0x4fff) {
+ ret = regmap_write(rt700->sdw_regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ } else if (reg == 0xff01) {
+ ret = regmap_write(rt700->sdw_regmap, reg, val);
+ if (ret < 0)
+ return ret;
+ } else if (mask == 0x7000) {
+ ret = regmap_write(rt700->sdw_regmap,
+ reg, ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ reg2 = reg + 0x1000;
+ reg2 |= 0x80;
+ ret = regmap_write(rt700->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(rt700->sdw_regmap,
+ reg2, ((val >> 8) & 0xff));
+ if (ret < 0)
+ return ret;
+ ret = regmap_write(rt700->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 rt700_regmap = {
+ .reg_bits = 24,
+ .val_bits = 32,
+ .readable_reg = rt700_readable_register,
+ .volatile_reg = rt700_volatile_register,
+ .max_register = 0x755800,
+ .reg_defaults = rt700_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(rt700_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+ .reg_read = rt700_sdw_read,
+ .reg_write = rt700_sdw_write,
+};
+
+static const struct regmap_config rt700_sdw_regmap = {
+ .name = "sdw",
+ .reg_bits = 32,
+ .val_bits = 8,
+ .readable_reg = rt700_readable_register,
+ .max_register = 0xff01,
+ .cache_type = REGCACHE_NONE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static int rt700_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ struct rt700_priv *rt700 = dev_get_drvdata(&slave->dev);
+
+ /* Update the status */
+ rt700->status = status;
+
+ if (status == SDW_SLAVE_UNATTACHED)
+ rt700->hw_init = false;
+
+ /*
+ * Perform initialization only if slave status is present and
+ * hw_init flag is false
+ */
+ if (rt700->hw_init || rt700->status != SDW_SLAVE_ATTACHED)
+ return 0;
+
+ /* perform I/O transfers required for Slave initialization */
+ return rt700_io_init(&slave->dev, slave);
+}
+
+static int rt700_read_prop(struct sdw_slave *slave)
+{
+ struct sdw_slave_prop *prop = &slave->prop;
+ int nval, i, num_of_ports = 1;
+ u32 bit;
+ unsigned long addr;
+ struct sdw_dpn_prop *dpn;
+
+ prop->paging_support = false;
+
+ /* first we need to allocate memory for set bits in port lists */
+ prop->source_ports = 0x14; /* BITMAP: 00010100 */
+ prop->sink_ports = 0xA; /* BITMAP: 00001010 */
+
+ nval = hweight32(prop->source_ports);
+ num_of_ports += nval;
+ 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);
+ num_of_ports += nval;
+ prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
+ sizeof(*prop->sink_dpn_prop),
+ GFP_KERNEL);
+ if (!prop->sink_dpn_prop)
+ return -ENOMEM;
+
+ i = 0;
+ dpn = prop->sink_dpn_prop;
+ addr = prop->sink_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++;
+ }
+
+ /* Allocate port_ready based on num_of_ports */
+ slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports,
+ sizeof(*slave->port_ready),
+ GFP_KERNEL);
+ if (!slave->port_ready)
+ return -ENOMEM;
+
+ /* Initialize completion */
+ for (i = 0; i < num_of_ports; i++)
+ init_completion(&slave->port_ready[i]);
+
+ /* set the timeout values */
+ prop->clk_stop_timeout = 20;
+
+ /* wake-up event */
+ prop->wake_capable = 1;
+
+ return 0;
+}
+
+static int rt700_bus_config(struct sdw_slave *slave,
+ struct sdw_bus_params *params)
+{
+ struct rt700_priv *rt700 = dev_get_drvdata(&slave->dev);
+ int ret;
+
+ memcpy(&rt700->params, params, sizeof(*params));
+
+ ret = rt700_clock_config(&slave->dev);
+ if (ret < 0)
+ dev_err(&slave->dev, "Invalid clk config");
+
+ return ret;
+}
+
+static int rt700_interrupt_callback(struct sdw_slave *slave,
+ struct sdw_slave_intr_status *status)
+{
+ struct rt700_priv *rt700 = dev_get_drvdata(&slave->dev);
+
+ dev_dbg(&slave->dev,
+ "%s control_port_stat=%x", __func__, status->control_port);
+
+ if (status->control_port & 0x4) {
+ mod_delayed_work(system_power_efficient_wq,
+ &rt700->jack_detect_work, msecs_to_jiffies(250));
+ }
+
+ return 0;
+}
+
+/*
+ * slave_ops: callbacks for get_clock_stop_mode, clock_stop and
+ * port_prep are not defined for now
+ */
+static struct sdw_slave_ops rt700_slave_ops = {
+ .read_prop = rt700_read_prop,
+ .interrupt_callback = rt700_interrupt_callback,
+ .update_status = rt700_update_status,
+ .bus_config = rt700_bus_config,
+};
+
+static int rt700_sdw_probe(struct sdw_slave *slave,
+ const struct sdw_device_id *id)
+{
+ struct regmap *sdw_regmap, *regmap;
+
+ /* Assign ops */
+ slave->ops = &rt700_slave_ops;
+
+ /* Regmap Initialization */
+ sdw_regmap = devm_regmap_init_sdw(slave, &rt700_sdw_regmap);
+ if (!sdw_regmap)
+ return -EINVAL;
+
+ regmap = devm_regmap_init(&slave->dev, NULL,
+ &slave->dev, &rt700_regmap);
+ if (!regmap)
+ return -EINVAL;
+
+ rt700_init(&slave->dev, sdw_regmap, regmap, slave);
+
+ return 0;
+}
+
+static int rt700_sdw_remove(struct sdw_slave *slave)
+{
+ struct rt700_priv *rt700 = dev_get_drvdata(&slave->dev);
+
+ if (rt700 && rt700->hw_init) {
+ cancel_delayed_work(&rt700->jack_detect_work);
+ cancel_delayed_work(&rt700->jack_btn_check_work);
+ }
+
+ return 0;
+}
+
+static const struct sdw_device_id rt700_id[] = {
+ SDW_SLAVE_ENTRY(0x025d, 0x700, 0),
+ {},
+};
+MODULE_DEVICE_TABLE(sdw, rt700_id);
+
+static int rt700_dev_suspend(struct device *dev)
+{
+ struct rt700_priv *rt700 = dev_get_drvdata(dev);
+
+ if (!rt700->hw_init)
+ return 0;
+
+ regcache_cache_only(rt700->regmap, true);
+
+ return 0;
+}
+
+#define RT700_PROBE_TIMEOUT 2000
+
+static int rt700_dev_resume(struct device *dev)
+{
+ struct sdw_slave *slave = dev_to_sdw_dev(dev);
+ struct rt700_priv *rt700 = dev_get_drvdata(dev);
+ unsigned long time;
+
+ if (!rt700->hw_init)
+ return 0;
+
+ if (!slave->unattach_request)
+ goto regmap_sync;
+
+ time = wait_for_completion_timeout(&slave->initialization_complete,
+ msecs_to_jiffies(RT700_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(rt700->regmap, false);
+ regcache_sync_region(rt700->regmap, 0x3000, 0x8fff);
+ regcache_sync_region(rt700->regmap, 0x752010, 0x75206b);
+
+ return 0;
+}
+
+static const struct dev_pm_ops rt700_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(rt700_dev_suspend, rt700_dev_resume)
+ SET_RUNTIME_PM_OPS(rt700_dev_suspend, rt700_dev_resume, NULL)
+};
+
+static struct sdw_driver rt700_sdw_driver = {
+ .driver = {
+ .name = "rt700",
+ .owner = THIS_MODULE,
+ .pm = &rt700_pm,
+ },
+ .probe = rt700_sdw_probe,
+ .remove = rt700_sdw_remove,
+ .ops = &rt700_slave_ops,
+ .id_table = rt700_id,
+};
+module_sdw_driver(rt700_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT700 driver SDW");
+MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
+MODULE_LICENSE("GPL v2");
