From: Kenneth Westfield <kwestfie@xxxxxxxxxxxxxx>
Add machine driver for the IPQ806X LPASS SOC.
Change-Id: Ica26398fafd3098cdd12dcf45ebccec2ad820002
Signed-off-by: Kenneth Westfield <kwestfie@xxxxxxxxxxxxxx>
Signed-off-by: Banajit Goswami <bgoswami@xxxxxxxxxxxxxx>
---
sound/soc/qcom/ipq806x.c | 221 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 221 insertions(+)
create mode 100644 sound/soc/qcom/ipq806x.c
diff --git a/sound/soc/qcom/ipq806x.c b/sound/soc/qcom/ipq806x.c
new file mode 100644
index 0000000000000000000000000000000000000000..e973bd71fa7fe117e73b1b562ec2758b3379e98f
--- /dev/null
+++ b/sound/soc/qcom/ipq806x.c
@@ -0,0 +1,221 @@
+/*
+ * Copyright (c) 2010-2011,2013-2014 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#define DRV_NAME "ipq806x-asoc-snd"
+#define DRV_VERSION "1.0"
+
+struct ipq806x_asoc_mach_data {
+ struct clk *ahbix_clk;
+ struct gpio_desc *dac_desc;
+};
+
+static struct snd_soc_dai_link ipq_snd_dai[] = {
+ /* Front end DAI Links */
+ {
+ .name = "IPQ806x Media1",
+ .stream_name = "MultiMedia1",
+ .cpu_dai_name = "lpass-cpu-dai",
+ .platform_name = "lpass-pcm-mi2s",
+ .codec_dai_name = "snd-soc-dummy-dai",
+ .codec_name = "snd-soc-dummy",
+ },
+};
+
+
+static int ipq806x_populate_dai_link_component_of_node(
+ struct snd_soc_card *card)
+{
+ int i, index;
+ int ret = 0;
+ struct device *cdev = card->dev;
+ struct snd_soc_dai_link *dai_link = card->dai_link;
+ struct device_node *np;
+
+ if (!cdev) {
+ pr_err("%s: Sound card device memory NULL\n", __func__);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < card->num_links; i++) {
+ if (dai_link[i].platform_of_node && dai_link[i].cpu_of_node)
+ continue;
+
+ /* populate platform_of_node for snd card dai links */
+ if (dai_link[i].platform_name &&
+ !dai_link[i].platform_of_node) {
+ index = of_property_match_string(cdev->of_node,
+ "asoc-platform-names",
+ dai_link[i].platform_name);
+ if (index < 0) {
+ pr_err("%s: No match found for platform name: %s\n",
+ __func__,
+ dai_link[i].platform_name);
+ ret = index;
+ goto err;
+ }
+ np = of_parse_phandle(cdev->of_node, "asoc-platform",
+ index);
+ if (!np) {
+ pr_err("%s: retrieving phandle for platform %s, index %d failed\n",
+ __func__,
+ dai_link[i].platform_name,
+ index);
+ ret = -ENODEV;
+ goto err;
+ }
+ dai_link[i].platform_of_node = np;
+ dai_link[i].platform_name = NULL;
+ }
+
+ /* populate cpu_of_node for snd card dai links */
+ if (dai_link[i].cpu_dai_name && !dai_link[i].cpu_of_node) {
+ index = of_property_match_string(cdev->of_node,
+ "asoc-cpu-names",
+ dai_link[i].cpu_dai_name);
+ if (index >= 0) {
+ np = of_parse_phandle(cdev->of_node,
+ "asoc-cpu", index);
+ if (!np) {
+ pr_err("%s: retrieving phandle for cpu dai %s failed\n",
+ __func__,
+ dai_link[i].cpu_dai_name);
+ ret = -ENODEV;
+ goto err;
+ }
+ dai_link[i].cpu_of_node = np;
+ dai_link[i].cpu_dai_name = NULL;
+ }
+ }
+ }
+
+err:
+ return ret;
+}
+
+static struct snd_soc_card snd_soc_card_ipq = {
+ .name = DRV_NAME,
+};
+
+static int ipq806x_asoc_machine_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &snd_soc_card_ipq;
+ struct ipq806x_asoc_mach_data *pdata;
+ int ret;
+
+ pdata = devm_kzalloc(&pdev->dev,
+ sizeof(struct ipq806x_asoc_mach_data), GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+
+ card->dev = &pdev->dev;
+ platform_set_drvdata(pdev, card);
+ snd_soc_card_set_drvdata(card, pdata);
+
+ ret = snd_soc_of_parse_card_name(card, "qcom,model");
+ if (ret) {
+ dev_err(&pdev->dev, "parse card name failed, err:%d\n",
+ ret);
+ goto err;
+ }
+ card->dai_link = ipq_snd_dai;
+ card->num_links = ARRAY_SIZE(ipq_snd_dai);
+
+ ret = ipq806x_populate_dai_link_component_of_node(card);
+ if (ret) {
+ ret = -EPROBE_DEFER;
+ goto err;
+ }
+
+ pdata->dac_desc = devm_gpiod_get(&pdev->dev, "dac");
+ if (IS_ERR(pdata->dac_desc)) {
+ pr_err("unable to get dac-gpio\n");
+ ret = PTR_ERR(pdata->dac_desc);
+ goto err;
+ }
+ gpiod_direction_output(pdata->dac_desc, 0);
+ gpiod_set_value(pdata->dac_desc, 1);
+
+ pdata->ahbix_clk = devm_clk_get(&pdev->dev, "ahbix_clk");
+ if (IS_ERR(pdata->ahbix_clk)) {
+ dev_err(&pdev->dev, "%s: Error in getting ahbix_clk\n",
+ __func__);
+ ret = PTR_ERR(pdata->ahbix_clk);
+ goto err;
+ }
+
+ clk_set_rate(pdata->ahbix_clk, 131072);
+ ret = clk_prepare_enable(pdata->ahbix_clk);
+ if (IS_ERR_VALUE(ret)) {
+ dev_err(&pdev->dev, "%s: Error in enabling ahbix_clk\n",
+ __func__);
+ goto err;
+ }
+
+ ret = snd_soc_register_card(card);
+ if (ret == -EPROBE_DEFER) {
+ goto err_clock;
+ } else if (ret) {
+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
+ ret);
+ goto err_clock;
+ }
+
+ return 0;
+
+err_clock:
+ clk_disable_unprepare(pdata->ahbix_clk);
+
+err:
+ return ret;
+}
+
+static int ipq806x_asoc_machine_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct ipq806x_asoc_mach_data *pdata = snd_soc_card_get_drvdata(card);
+
+ clk_disable_unprepare(pdata->ahbix_clk);
+
+ snd_soc_unregister_card(card);
+
+ return 0;
+}
+
+static const struct of_device_id ipq806x_asoc_machine_of_match[] = {
+ { .compatible = "qcom,ipq806x-snd-card", },
+ {},
+};
+
+static struct platform_driver ipq806x_asoc_machine_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ .pm = &snd_soc_pm_ops,
+ .of_match_table = ipq806x_asoc_machine_of_match,
+ },
+ .probe = ipq806x_asoc_machine_probe,
+ .remove = ipq806x_asoc_machine_remove,
+};
+module_platform_driver(ipq806x_asoc_machine_driver);
+
+MODULE_DESCRIPTION("ALSA SoC IPQ806x Machine Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, ipq806x_asoc_machine_of_match);
+MODULE_VERSION(DRV_VERSION);
--
1.8.2.1
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