ASoC: rt715-sdca: Add RT715 sdca vendor-specific driver
This is initial sdca version of codec driver for rt715.
Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://lore.kernel.org/r/20210302103042.19528-1-jack.yu@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt715-sdca-sdw.c b/sound/soc/codecs/rt715-sdca-sdw.c
new file mode 100644
index 0000000..bcced85
--- /dev/null
+++ b/sound/soc/codecs/rt715-sdca-sdw.c
@@ -0,0 +1,278 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// rt715-sdca-sdw.c -- rt715 ALSA SoC audio driver
+//
+// Copyright(c) 2020 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/soundwire/sdw_registers.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include "rt715-sdca.h"
+#include "rt715-sdca-sdw.h"
+
+static bool rt715_sdca_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x201a ... 0x2027:
+ case 0x2029 ... 0x202a:
+ case 0x202d ... 0x2034:
+ case 0x2200 ... 0x2204:
+ case 0x2206 ... 0x2212:
+ case 0x2230 ... 0x2239:
+ case 0x2f5b:
+ case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
+ RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00):
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt715_sdca_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x201b:
+ case 0x201c:
+ case 0x201d:
+ case 0x201f:
+ case 0x2021:
+ case 0x2023:
+ case 0x2230:
+ case 0x202d ... 0x202f: /* BRA */
+ case 0x2200 ... 0x2212: /* i2c debug */
+ case 0x2f07:
+ case 0x2f1b ... 0x2f1e:
+ case 0x2f30 ... 0x2f34:
+ case 0x2f50 ... 0x2f51:
+ case 0x2f53 ... 0x2f59:
+ case 0x2f5c ... 0x2f5f:
+ case SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
+ RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00): /* VAD Searching status */
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt715_sdca_mbq_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2000000:
+ case 0x200002b:
+ case 0x2000036:
+ case 0x2000037:
+ case 0x2000039:
+ case 0x6100000:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt715_sdca_mbq_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2000000:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rt715_sdca_regmap = {
+ .reg_bits = 32,
+ .val_bits = 8,
+ .readable_reg = rt715_sdca_readable_register,
+ .volatile_reg = rt715_sdca_volatile_register,
+ .max_register = 0x43ffffff,
+ .reg_defaults = rt715_reg_defaults_sdca,
+ .num_reg_defaults = ARRAY_SIZE(rt715_reg_defaults_sdca),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static const struct regmap_config rt715_sdca_mbq_regmap = {
+ .name = "sdw-mbq",
+ .reg_bits = 32,
+ .val_bits = 16,
+ .readable_reg = rt715_sdca_mbq_readable_register,
+ .volatile_reg = rt715_sdca_mbq_volatile_register,
+ .max_register = 0x43ffffff,
+ .reg_defaults = rt715_mbq_reg_defaults_sdca,
+ .num_reg_defaults = ARRAY_SIZE(rt715_mbq_reg_defaults_sdca),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static int rt715_sdca_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ struct rt715_sdca_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_sdca_io_init(&slave->dev, slave);
+}
+
+static int rt715_sdca_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->paging_support = true;
+
+ /* 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;
+
+ return 0;
+}
+
+static struct sdw_slave_ops rt715_sdca_slave_ops = {
+ .read_prop = rt715_sdca_read_prop,
+ .update_status = rt715_sdca_update_status,
+};
+
+static int rt715_sdca_sdw_probe(struct sdw_slave *slave,
+ const struct sdw_device_id *id)
+{
+ struct regmap *mbq_regmap, *regmap;
+
+ slave->ops = &rt715_sdca_slave_ops;
+
+ /* Regmap Initialization */
+ mbq_regmap = devm_regmap_init_sdw_mbq(slave, &rt715_sdca_mbq_regmap);
+ if (!mbq_regmap)
+ return -EINVAL;
+
+ regmap = devm_regmap_init_sdw(slave, &rt715_sdca_regmap);
+ if (!regmap)
+ return -EINVAL;
+
+ return rt715_sdca_init(&slave->dev, mbq_regmap, regmap, slave);
+}
+
+static const struct sdw_device_id rt715_sdca_id[] = {
+ SDW_SLAVE_ENTRY_EXT(0x025d, 0x715, 0x3, 0x1, 0),
+ SDW_SLAVE_ENTRY_EXT(0x025d, 0x714, 0x3, 0x1, 0),
+ {},
+};
+MODULE_DEVICE_TABLE(sdw, rt715_sdca_id);
+
+static int __maybe_unused rt715_dev_suspend(struct device *dev)
+{
+ struct rt715_sdca_priv *rt715 = dev_get_drvdata(dev);
+
+ if (!rt715->hw_init)
+ return 0;
+
+ regcache_cache_only(rt715->regmap, true);
+ regcache_mark_dirty(rt715->regmap);
+ regcache_cache_only(rt715->mbq_regmap, true);
+ regcache_mark_dirty(rt715->mbq_regmap);
+
+ 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_sdca_priv *rt715 = dev_get_drvdata(dev);
+ unsigned long time;
+
+ if (!rt715->hw_init)
+ return 0;
+
+ if (!slave->unattach_request)
+ goto regmap_sync;
+
+ time = wait_for_completion_timeout(&slave->enumeration_complete,
+ msecs_to_jiffies(RT715_PROBE_TIMEOUT));
+ if (!time) {
+ dev_err(&slave->dev, "Enumeration not complete, timed out\n");
+ return -ETIMEDOUT;
+ }
+
+regmap_sync:
+ slave->unattach_request = 0;
+ regcache_cache_only(rt715->regmap, false);
+ regcache_sync_region(rt715->regmap,
+ SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
+ CH_00),
+ SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
+ RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
+ regcache_cache_only(rt715->mbq_regmap, false);
+ regcache_sync_region(rt715->mbq_regmap, 0x2000000, 0x61020ff);
+ regcache_sync_region(rt715->mbq_regmap,
+ SDW_SDCA_CTL(FUN_JACK_CODEC, RT715_SDCA_ST_EN, RT715_SDCA_ST_CTRL,
+ CH_00),
+ SDW_SDCA_CTL(FUN_MIC_ARRAY, RT715_SDCA_SMPU_TRIG_ST_EN,
+ RT715_SDCA_SMPU_TRIG_ST_CTRL, CH_00));
+
+ 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-sdca",
+ .owner = THIS_MODULE,
+ .pm = &rt715_pm,
+ },
+ .probe = rt715_sdca_sdw_probe,
+ .ops = &rt715_sdca_slave_ops,
+ .id_table = rt715_sdca_id,
+};
+module_sdw_driver(rt715_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT715 driver SDW SDCA");
+MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
+MODULE_LICENSE("GPL v2");