--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// rt1318-sdw.c -- rt1318 SDCA ALSA SoC amplifier audio driver
+//
+// Copyright(c) 2022 Realtek Semiconductor Corp.
+//
+//
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/pm_runtime.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/dmi.h>
+#include <linux/firmware.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include "rt1318-sdw.h"
+
+static const struct reg_sequence rt1318_blind_write[] = {
+ { 0xc001, 0x43 },
+ { 0xc003, 0xa2 },
+ { 0xc004, 0x44 },
+ { 0xc005, 0x44 },
+ { 0xc006, 0x33 },
+ { 0xc007, 0x64 },
+ { 0xc320, 0x20 },
+ { 0xf203, 0x18 },
+ { 0xf211, 0x00 },
+ { 0xf212, 0x26 },
+ { 0xf20d, 0x17 },
+ { 0xf214, 0x06 },
+ { 0xf20e, 0x00 },
+ { 0xf223, 0x7f },
+ { 0xf224, 0xdb },
+ { 0xf225, 0xee },
+ { 0xf226, 0x3f },
+ { 0xf227, 0x0f },
+ { 0xf21a, 0x78 },
+ { 0xf242, 0x3c },
+ { 0xc321, 0x0b },
+ { 0xc200, 0xd8 },
+ { 0xc201, 0x27 },
+ { 0xc202, 0x0f },
+ { 0xf800, 0x20 },
+ { 0xdf00, 0x10 },
+ { 0xdf5f, 0x01 },
+ { 0xdf60, 0xa7 },
+ { 0xc400, 0x0e },
+ { 0xc401, 0x43 },
+ { 0xc402, 0xe0 },
+ { 0xc403, 0x00 },
+ { 0xc404, 0x4c },
+ { 0xc407, 0x02 },
+ { 0xc408, 0x3f },
+ { 0xc300, 0x01 },
+ { 0xc206, 0x78 },
+ { 0xc203, 0x84 },
+ { 0xc120, 0xc0 },
+ { 0xc121, 0x03 },
+ { 0xe000, 0x88 },
+ { 0xc321, 0x09 },
+ { 0xc322, 0x01 },
+ { 0xe706, 0x0f },
+ { 0xe707, 0x30 },
+ { 0xe806, 0x0f },
+ { 0xe807, 0x30 },
+ { 0xed00, 0xb0 },
+ { 0xce04, 0x02 },
+ { 0xce05, 0x63 },
+ { 0xce06, 0x68 },
+ { 0xce07, 0x07 },
+ { 0xcf04, 0x02 },
+ { 0xcf05, 0x63 },
+ { 0xcf06, 0x68 },
+ { 0xcf07, 0x07 },
+ { 0xce60, 0xe3 },
+ { 0xc130, 0x51 },
+ { 0xf102, 0x00 },
+ { 0xf103, 0x00 },
+ { 0xf104, 0xf5 },
+ { 0xf105, 0x06 },
+ { 0xf109, 0x9b },
+ { 0xf10a, 0x0b },
+ { 0xf10b, 0x4c },
+ { 0xf10b, 0x5c },
+ { 0xf102, 0x00 },
+ { 0xf103, 0x00 },
+ { 0xf104, 0xf5 },
+ { 0xf105, 0x0b },
+ { 0xf109, 0x03 },
+ { 0xf10a, 0x0b },
+ { 0xf10b, 0x4c },
+ { 0xf10b, 0x5c },
+ { 0xf102, 0x00 },
+ { 0xf103, 0x00 },
+ { 0xf104, 0xf5 },
+ { 0xf105, 0x0c },
+ { 0xf109, 0x7f },
+ { 0xf10a, 0x0b },
+ { 0xf10b, 0x4c },
+ { 0xf10b, 0x5c },
+
+ { 0xe604, 0x00 },
+ { 0xdb00, 0x0c },
+ { 0xdd00, 0x0c },
+ { 0xdc19, 0x00 },
+ { 0xdc1a, 0xff },
+ { 0xdc1b, 0xff },
+ { 0xdc1c, 0xff },
+ { 0xdc1d, 0x00 },
+ { 0xdc1e, 0x00 },
+ { 0xdc1f, 0x00 },
+ { 0xdc20, 0xff },
+ { 0xde19, 0x00 },
+ { 0xde1a, 0xff },
+ { 0xde1b, 0xff },
+ { 0xde1c, 0xff },
+ { 0xde1d, 0x00 },
+ { 0xde1e, 0x00 },
+ { 0xde1f, 0x00 },
+ { 0xde20, 0xff },
+ { 0xdb32, 0x00 },
+ { 0xdd32, 0x00 },
+ { 0xdb33, 0x0a },
+ { 0xdd33, 0x0a },
+ { 0xdb34, 0x1a },
+ { 0xdd34, 0x1a },
+ { 0xdb17, 0xef },
+ { 0xdd17, 0xef },
+ { 0xdba7, 0x00 },
+ { 0xdba8, 0x64 },
+ { 0xdda7, 0x00 },
+ { 0xdda8, 0x64 },
+ { 0xdb19, 0x40 },
+ { 0xdd19, 0x40 },
+ { 0xdb00, 0x4c },
+ { 0xdb01, 0x79 },
+ { 0xdd01, 0x79 },
+ { 0xdb04, 0x05 },
+ { 0xdb05, 0x03 },
+ { 0xdd04, 0x05 },
+ { 0xdd05, 0x03 },
+ { 0xdbbb, 0x09 },
+ { 0xdbbc, 0x30 },
+ { 0xdbbd, 0xf0 },
+ { 0xdbbe, 0xf1 },
+ { 0xddbb, 0x09 },
+ { 0xddbc, 0x30 },
+ { 0xddbd, 0xf0 },
+ { 0xddbe, 0xf1 },
+ { 0xdb01, 0x79 },
+ { 0xdd01, 0x79 },
+ { 0xdc52, 0xef },
+ { 0xde52, 0xef },
+ { 0x2f55, 0x22 },
+};
+
+static const struct reg_default rt1318_reg_defaults[] = {
+ { 0x3000, 0x00 },
+ { 0x3004, 0x01 },
+ { 0x3005, 0x23 },
+ { 0x3202, 0x00 },
+ { 0x3203, 0x01 },
+ { 0x3206, 0x00 },
+ { 0xc000, 0x00 },
+ { 0xc001, 0x43 },
+ { 0xc003, 0x22 },
+ { 0xc004, 0x44 },
+ { 0xc005, 0x44 },
+ { 0xc006, 0x33 },
+ { 0xc007, 0x64 },
+ { 0xc008, 0x05 },
+ { 0xc00a, 0xfc },
+ { 0xc00b, 0x0f },
+ { 0xc00c, 0x0e },
+ { 0xc00d, 0xef },
+ { 0xc00e, 0xe5 },
+ { 0xc00f, 0xff },
+ { 0xc120, 0xc0 },
+ { 0xc121, 0x00 },
+ { 0xc122, 0x00 },
+ { 0xc123, 0x14 },
+ { 0xc125, 0x00 },
+ { 0xc200, 0x00 },
+ { 0xc201, 0x00 },
+ { 0xc202, 0x00 },
+ { 0xc203, 0x04 },
+ { 0xc204, 0x00 },
+ { 0xc205, 0x00 },
+ { 0xc206, 0x68 },
+ { 0xc207, 0x70 },
+ { 0xc208, 0x00 },
+ { 0xc20a, 0x00 },
+ { 0xc20b, 0x01 },
+ { 0xc20c, 0x7f },
+ { 0xc20d, 0x01 },
+ { 0xc20e, 0x7f },
+ { 0xc300, 0x00 },
+ { 0xc301, 0x00 },
+ { 0xc303, 0x80 },
+ { 0xc320, 0x00 },
+ { 0xc321, 0x09 },
+ { 0xc322, 0x02 },
+ { 0xc410, 0x04 },
+ { 0xc430, 0x00 },
+ { 0xc431, 0x00 },
+ { 0xca00, 0x10 },
+ { 0xca01, 0x00 },
+ { 0xca02, 0x0b },
+ { 0xca10, 0x10 },
+ { 0xca11, 0x00 },
+ { 0xca12, 0x0b },
+ { 0xdd93, 0x00 },
+ { 0xdd94, 0x64 },
+ { 0xe300, 0xa0 },
+ { 0xed00, 0x80 },
+ { 0xed01, 0x0f },
+ { 0xed02, 0xff },
+ { 0xed03, 0x00 },
+ { 0xed04, 0x00 },
+ { 0xed05, 0x0f },
+ { 0xed06, 0xff },
+ { 0xf010, 0x10 },
+ { 0xf011, 0xec },
+ { 0xf012, 0x68 },
+ { 0xf013, 0x21 },
+ { 0xf800, 0x00 },
+ { 0xf801, 0x12 },
+ { 0xf802, 0xe0 },
+ { 0xf803, 0x2f },
+ { 0xf804, 0x00 },
+ { 0xf805, 0x00 },
+ { 0xf806, 0x07 },
+ { 0xf807, 0xff },
+ { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_UDMPU21, RT1318_SDCA_CTL_UDMPU_CLUSTER, 0), 0x00 },
+ { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_L), 0x01 },
+ { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_R), 0x01 },
+ { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_PDE23, RT1318_SDCA_CTL_REQ_POWER_STATE, 0), 0x03 },
+ { SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_CS21, RT1318_SDCA_CTL_SAMPLE_FREQ_INDEX, 0), 0x09 },
+};
+
+static bool rt1318_readable_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2f55:
+ case 0x3000:
+ case 0x3004 ... 0x3005:
+ case 0x3202 ... 0x3203:
+ case 0x3206:
+ case 0xc000 ... 0xc00f:
+ case 0xc120 ... 0xc125:
+ case 0xc200 ... 0xc20e:
+ case 0xc300 ... 0xc303:
+ case 0xc320 ... 0xc322:
+ case 0xc410:
+ case 0xc430 ... 0xc431:
+ case 0xca00 ... 0xca02:
+ case 0xca10 ... 0xca12:
+ case 0xcb00 ... 0xcb0b:
+ case 0xcc00 ... 0xcce5:
+ case 0xcd00 ... 0xcde5:
+ case 0xce00 ... 0xce6a:
+ case 0xcf00 ... 0xcf53:
+ case 0xd000 ... 0xd0cc:
+ case 0xd100 ... 0xd1b9:
+ case 0xdb00 ... 0xdc53:
+ case 0xdd00 ... 0xde53:
+ case 0xdf00 ... 0xdf6b:
+ case 0xe300:
+ case 0xeb00 ... 0xebcc:
+ case 0xec00 ... 0xecb9:
+ case 0xed00 ... 0xed06:
+ case 0xf010 ... 0xf014:
+ case 0xf800 ... 0xf807:
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_UDMPU21, RT1318_SDCA_CTL_UDMPU_CLUSTER, 0):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_L):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_R):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_PDE23, RT1318_SDCA_CTL_REQ_POWER_STATE, 0):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_CS21, RT1318_SDCA_CTL_SAMPLE_FREQ_INDEX, 0):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_SAPU, RT1318_SDCA_CTL_SAPU_PROTECTION_MODE, 0):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_SAPU, RT1318_SDCA_CTL_SAPU_PROTECTION_STATUS, 0):
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool rt1318_volatile_register(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case 0x2f55:
+ case 0x3000 ... 0x3001:
+ case 0xc000:
+ case 0xc301:
+ case 0xc410:
+ case 0xc430 ... 0xc431:
+ case 0xdb06:
+ case 0xdb12:
+ case 0xdb1d ... 0xdb1f:
+ case 0xdb35:
+ case 0xdb37:
+ case 0xdb8a ... 0xdb92:
+ case 0xdbc5 ... 0xdbc8:
+ case 0xdc2b ... 0xdc49:
+ case 0xdd0b:
+ case 0xdd12:
+ case 0xdd1d ... 0xdd1f:
+ case 0xdd35:
+ case 0xdd8a ... 0xdd92:
+ case 0xddc5 ... 0xddc8:
+ case 0xde2b ... 0xde44:
+ case 0xdf4a ... 0xdf55:
+ case 0xe224 ... 0xe23b:
+ case 0xea01:
+ case 0xebc5:
+ case 0xebc8:
+ case 0xebcb ... 0xebcc:
+ case 0xed03 ... 0xed06:
+ case 0xf010 ... 0xf014:
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_SAPU, RT1318_SDCA_CTL_SAPU_PROTECTION_MODE, 0):
+ case SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_SAPU, RT1318_SDCA_CTL_SAPU_PROTECTION_STATUS, 0):
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config rt1318_sdw_regmap = {
+ .reg_bits = 32,
+ .val_bits = 8,
+ .readable_reg = rt1318_readable_register,
+ .volatile_reg = rt1318_volatile_register,
+ .max_register = 0x41081488,
+ .reg_defaults = rt1318_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(rt1318_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_read = true,
+ .use_single_write = true,
+};
+
+static int rt1318_read_prop(struct sdw_slave *slave)
+{
+ struct sdw_slave_prop *prop = &slave->prop;
+ int nval;
+ int i, j;
+ u32 bit;
+ unsigned long addr;
+ struct sdw_dpn_prop *dpn;
+
+ prop->scp_int1_mask = SDW_SCP_INT1_BUS_CLASH | SDW_SCP_INT1_PARITY;
+ prop->quirks = SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY;
+ prop->is_sdca = true;
+
+ prop->paging_support = true;
+
+ /* first we need to allocate memory for set bits in port lists */
+ prop->source_ports = BIT(2);
+ prop->sink_ports = BIT(1);
+
+ 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;
+
+ 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);
+ prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval,
+ sizeof(*prop->sink_dpn_prop), GFP_KERNEL);
+ if (!prop->sink_dpn_prop)
+ return -ENOMEM;
+
+ j = 0;
+ dpn = prop->sink_dpn_prop;
+ addr = prop->sink_ports;
+ for_each_set_bit(bit, &addr, 32) {
+ dpn[j].num = bit;
+ dpn[j].type = SDW_DPN_FULL;
+ dpn[j].simple_ch_prep_sm = true;
+ dpn[j].ch_prep_timeout = 10;
+ j++;
+ }
+
+ /* set the timeout values */
+ prop->clk_stop_timeout = 20;
+
+ return 0;
+}
+
+static int rt1318_io_init(struct device *dev, struct sdw_slave *slave)
+{
+ struct rt1318_sdw_priv *rt1318 = dev_get_drvdata(dev);
+
+ if (rt1318->hw_init)
+ return 0;
+
+ if (rt1318->first_hw_init) {
+ regcache_cache_only(rt1318->regmap, false);
+ regcache_cache_bypass(rt1318->regmap, true);
+ } else {
+ /*
+ * PM runtime is only enabled when a Slave reports as Attached
+ */
+
+ /* set autosuspend parameters */
+ pm_runtime_set_autosuspend_delay(&slave->dev, 3000);
+ pm_runtime_use_autosuspend(&slave->dev);
+
+ /* update count of parent 'active' children */
+ pm_runtime_set_active(&slave->dev);
+
+ /* make sure the device does not suspend immediately */
+ pm_runtime_mark_last_busy(&slave->dev);
+
+ pm_runtime_enable(&slave->dev);
+ }
+
+ pm_runtime_get_noresume(&slave->dev);
+
+ /* blind write */
+ regmap_multi_reg_write(rt1318->regmap, rt1318_blind_write,
+ ARRAY_SIZE(rt1318_blind_write));
+
+ if (rt1318->first_hw_init) {
+ regcache_cache_bypass(rt1318->regmap, false);
+ regcache_mark_dirty(rt1318->regmap);
+ }
+
+ /* Mark Slave initialization complete */
+ rt1318->first_hw_init = true;
+ rt1318->hw_init = true;
+
+ pm_runtime_mark_last_busy(&slave->dev);
+ pm_runtime_put_autosuspend(&slave->dev);
+
+ dev_dbg(&slave->dev, "%s hw_init complete\n", __func__);
+ return 0;
+}
+
+static int rt1318_update_status(struct sdw_slave *slave,
+ enum sdw_slave_status status)
+{
+ struct rt1318_sdw_priv *rt1318 = dev_get_drvdata(&slave->dev);
+
+ /* Update the status */
+ rt1318->status = status;
+
+ if (status == SDW_SLAVE_UNATTACHED)
+ rt1318->hw_init = false;
+
+ /*
+ * Perform initialization only if slave status is present and
+ * hw_init flag is false
+ */
+ if (rt1318->hw_init || rt1318->status != SDW_SLAVE_ATTACHED)
+ return 0;
+
+ /* perform I/O transfers required for Slave initialization */
+ return rt1318_io_init(&slave->dev, slave);
+}
+
+static int rt1318_classd_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct rt1318_sdw_priv *rt1318 = snd_soc_component_get_drvdata(component);
+ unsigned char ps0 = 0x0, ps3 = 0x3;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ regmap_write(rt1318->regmap,
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_PDE23,
+ RT1318_SDCA_CTL_REQ_POWER_STATE, 0),
+ ps0);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ regmap_write(rt1318->regmap,
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_PDE23,
+ RT1318_SDCA_CTL_REQ_POWER_STATE, 0),
+ ps3);
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const char * const rt1318_rx_data_ch_select[] = {
+ "L,R",
+ "L,L",
+ "L,R",
+ "L,L+R",
+ "R,L",
+ "R,R",
+ "R,L+R",
+ "L+R,L",
+ "L+R,R",
+ "L+R,L+R",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1318_rx_data_ch_enum,
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_UDMPU21, RT1318_SDCA_CTL_UDMPU_CLUSTER, 0), 0,
+ rt1318_rx_data_ch_select);
+
+static const struct snd_kcontrol_new rt1318_snd_controls[] = {
+
+ /* UDMPU Cluster Selection */
+ SOC_ENUM("RX Channel Select", rt1318_rx_data_ch_enum),
+};
+
+static const struct snd_kcontrol_new rt1318_sto_dac =
+ SOC_DAPM_DOUBLE_R("Switch",
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_L),
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_FU21, RT1318_SDCA_CTL_FU_MUTE, CH_R),
+ 0, 1, 1);
+
+static const struct snd_soc_dapm_widget rt1318_dapm_widgets[] = {
+ /* Audio Interface */
+ SND_SOC_DAPM_AIF_IN("DP1RX", "DP1 Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_AIF_OUT("DP2TX", "DP2 Capture", 0, SND_SOC_NOPM, 0, 0),
+
+ /* Digital Interface */
+ SND_SOC_DAPM_SWITCH("DAC", SND_SOC_NOPM, 0, 0, &rt1318_sto_dac),
+
+ /* Output */
+ SND_SOC_DAPM_PGA_E("CLASS D", SND_SOC_NOPM, 0, 0, NULL, 0,
+ rt1318_classd_event, SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_OUTPUT("SPOL"),
+ SND_SOC_DAPM_OUTPUT("SPOR"),
+ /* Input */
+ SND_SOC_DAPM_PGA("FB Data", SND_SOC_NOPM, 0, 0, NULL, 0),
+ SND_SOC_DAPM_SIGGEN("FB Gen"),
+};
+
+static const struct snd_soc_dapm_route rt1318_dapm_routes[] = {
+ { "DAC", "Switch", "DP1RX" },
+ { "CLASS D", NULL, "DAC" },
+ { "SPOL", NULL, "CLASS D" },
+ { "SPOR", NULL, "CLASS D" },
+
+ { "FB Data", NULL, "FB Gen" },
+ { "DP2TX", NULL, "FB Data" },
+};
+
+static int rt1318_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream,
+ int direction)
+{
+ struct sdw_stream_data *stream;
+
+ if (!sdw_stream)
+ return 0;
+
+ stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+ if (!stream)
+ return -ENOMEM;
+
+ stream->sdw_stream = sdw_stream;
+
+ /* Use tx_mask or rx_mask to configure stream tag and set dma_data */
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK)
+ dai->playback_dma_data = stream;
+ else
+ dai->capture_dma_data = stream;
+
+ return 0;
+}
+
+static void rt1318_sdw_shutdown(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sdw_stream_data *stream;
+
+ stream = snd_soc_dai_get_dma_data(dai, substream);
+ snd_soc_dai_set_dma_data(dai, substream, NULL);
+ kfree(stream);
+}
+
+static int rt1318_sdw_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct rt1318_sdw_priv *rt1318 =
+ snd_soc_component_get_drvdata(component);
+ struct sdw_stream_config stream_config;
+ struct sdw_port_config port_config;
+ enum sdw_data_direction direction;
+ struct sdw_stream_data *stream;
+ int retval, port, num_channels, ch_mask;
+ unsigned int sampling_rate;
+
+ dev_dbg(dai->dev, "%s %s", __func__, dai->name);
+ stream = snd_soc_dai_get_dma_data(dai, substream);
+
+ if (!stream)
+ return -EINVAL;
+
+ if (!rt1318->sdw_slave)
+ return -EINVAL;
+
+ /* SoundWire specific configuration */
+ /* port 1 for playback */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ direction = SDW_DATA_DIR_RX;
+ port = 1;
+ } else {
+ direction = SDW_DATA_DIR_TX;
+ port = 2;
+ }
+
+ num_channels = params_channels(params);
+ ch_mask = (1 << num_channels) - 1;
+
+ stream_config.frame_rate = params_rate(params);
+ stream_config.ch_count = num_channels;
+ stream_config.bps = snd_pcm_format_width(params_format(params));
+ stream_config.direction = direction;
+
+ port_config.ch_mask = ch_mask;
+ port_config.num = port;
+
+ retval = sdw_stream_add_slave(rt1318->sdw_slave, &stream_config,
+ &port_config, 1, stream->sdw_stream);
+ if (retval) {
+ dev_err(dai->dev, "Unable to configure port\n");
+ return retval;
+ }
+
+ /* sampling rate configuration */
+ switch (params_rate(params)) {
+ case 16000:
+ sampling_rate = RT1318_SDCA_RATE_16000HZ;
+ break;
+ case 32000:
+ sampling_rate = RT1318_SDCA_RATE_32000HZ;
+ break;
+ case 44100:
+ sampling_rate = RT1318_SDCA_RATE_44100HZ;
+ break;
+ case 48000:
+ sampling_rate = RT1318_SDCA_RATE_48000HZ;
+ break;
+ case 96000:
+ sampling_rate = RT1318_SDCA_RATE_96000HZ;
+ break;
+ case 192000:
+ sampling_rate = RT1318_SDCA_RATE_192000HZ;
+ break;
+ default:
+ dev_err(component->dev, "Rate %d is not supported\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ /* set sampling frequency */
+ regmap_write(rt1318->regmap,
+ SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1318_SDCA_ENT_CS21, RT1318_SDCA_CTL_SAMPLE_FREQ_INDEX, 0),
+ sampling_rate);
+
+ return 0;
+}
+
+static int rt1318_sdw_pcm_hw_free(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct rt1318_sdw_priv *rt1318 =
+ snd_soc_component_get_drvdata(component);
+ struct sdw_stream_data *stream =
+ snd_soc_dai_get_dma_data(dai, substream);
+
+ if (!rt1318->sdw_slave)
+ return -EINVAL;
+
+ sdw_stream_remove_slave(rt1318->sdw_slave, stream->sdw_stream);
+ 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 rt1318_slave_ops = {
+ .read_prop = rt1318_read_prop,
+ .update_status = rt1318_update_status,
+};
+
+static int rt1318_sdw_component_probe(struct snd_soc_component *component)
+{
+ int ret;
+ struct rt1318_sdw_priv *rt1318 = snd_soc_component_get_drvdata(component);
+
+ rt1318->component = component;
+
+ ret = pm_runtime_resume(component->dev);
+ dev_dbg(&rt1318->sdw_slave->dev, "%s pm_runtime_resume, ret=%d", __func__, ret);
+ if (ret < 0 && ret != -EACCES)
+ return ret;
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver soc_component_sdw_rt1318 = {
+ .probe = rt1318_sdw_component_probe,
+ .controls = rt1318_snd_controls,
+ .num_controls = ARRAY_SIZE(rt1318_snd_controls),
+ .dapm_widgets = rt1318_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(rt1318_dapm_widgets),
+ .dapm_routes = rt1318_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(rt1318_dapm_routes),
+ .endianness = 1,
+};
+
+static const struct snd_soc_dai_ops rt1318_aif_dai_ops = {
+ .hw_params = rt1318_sdw_hw_params,
+ .hw_free = rt1318_sdw_pcm_hw_free,
+ .set_stream = rt1318_set_sdw_stream,
+ .shutdown = rt1318_sdw_shutdown,
+};
+
+#define RT1318_STEREO_RATES (SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000)
+#define RT1318_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver rt1318_sdw_dai[] = {
+ {
+ .name = "rt1318-aif",
+ .playback = {
+ .stream_name = "DP1 Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = RT1318_STEREO_RATES,
+ .formats = RT1318_FORMATS,
+ },
+ .capture = {
+ .stream_name = "DP2 Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = RT1318_STEREO_RATES,
+ .formats = RT1318_FORMATS,
+ },
+ .ops = &rt1318_aif_dai_ops,
+ },
+};
+
+static int rt1318_sdw_init(struct device *dev, struct regmap *regmap,
+ struct sdw_slave *slave)
+{
+ struct rt1318_sdw_priv *rt1318;
+ int ret;
+
+ rt1318 = devm_kzalloc(dev, sizeof(*rt1318), GFP_KERNEL);
+ if (!rt1318)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, rt1318);
+ rt1318->sdw_slave = slave;
+ rt1318->regmap = regmap;
+
+ /*
+ * Mark hw_init to false
+ * HW init will be performed when device reports present
+ */
+ rt1318->hw_init = false;
+ rt1318->first_hw_init = false;
+
+ ret = devm_snd_soc_register_component(dev,
+ &soc_component_sdw_rt1318,
+ rt1318_sdw_dai,
+ ARRAY_SIZE(rt1318_sdw_dai));
+
+ dev_dbg(&slave->dev, "%s\n", __func__);
+
+ return ret;
+}
+
+static int rt1318_sdw_probe(struct sdw_slave *slave,
+ const struct sdw_device_id *id)
+{
+ struct regmap *regmap;
+
+ /* Regmap Initialization */
+ regmap = devm_regmap_init_sdw(slave, &rt1318_sdw_regmap);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ return rt1318_sdw_init(&slave->dev, regmap, slave);
+}
+
+static int rt1318_sdw_remove(struct sdw_slave *slave)
+{
+ struct rt1318_sdw_priv *rt1318 = dev_get_drvdata(&slave->dev);
+
+ if (rt1318->first_hw_init)
+ pm_runtime_disable(&slave->dev);
+
+ return 0;
+}
+
+static const struct sdw_device_id rt1318_id[] = {
+ SDW_SLAVE_ENTRY_EXT(0x025d, 0x1318, 0x3, 0x1, 0),
+ {},
+};
+MODULE_DEVICE_TABLE(sdw, rt1318_id);
+
+static int __maybe_unused rt1318_dev_suspend(struct device *dev)
+{
+ struct rt1318_sdw_priv *rt1318 = dev_get_drvdata(dev);
+
+ if (!rt1318->hw_init)
+ return 0;
+
+ regcache_cache_only(rt1318->regmap, true);
+ return 0;
+}
+
+#define RT1318_PROBE_TIMEOUT 5000
+
+static int __maybe_unused rt1318_dev_resume(struct device *dev)
+{
+ struct sdw_slave *slave = dev_to_sdw_dev(dev);
+ struct rt1318_sdw_priv *rt1318 = dev_get_drvdata(dev);
+ unsigned long time;
+
+ if (!rt1318->first_hw_init)
+ return 0;
+
+ if (!slave->unattach_request)
+ goto regmap_sync;
+
+ time = wait_for_completion_timeout(&slave->initialization_complete,
+ msecs_to_jiffies(RT1318_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(rt1318->regmap, false);
+ regcache_sync(rt1318->regmap);
+
+ return 0;
+}
+
+static const struct dev_pm_ops rt1318_pm = {
+ SET_SYSTEM_SLEEP_PM_OPS(rt1318_dev_suspend, rt1318_dev_resume)
+ SET_RUNTIME_PM_OPS(rt1318_dev_suspend, rt1318_dev_resume, NULL)
+};
+
+static struct sdw_driver rt1318_sdw_driver = {
+ .driver = {
+ .name = "rt1318-sdca",
+ .owner = THIS_MODULE,
+ .pm = &rt1318_pm,
+ },
+ .probe = rt1318_sdw_probe,
+ .remove = rt1318_sdw_remove,
+ .ops = &rt1318_slave_ops,
+ .id_table = rt1318_id,
+};
+module_sdw_driver(rt1318_sdw_driver);
+
+MODULE_DESCRIPTION("ASoC RT1318 driver SDCA SDW");
+MODULE_AUTHOR("Shuming Fan <shumingf@realtek.com>");
+MODULE_LICENSE("GPL");
projects / linux-stable / commitdiff