change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
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@@ -1,9 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * DesignWare HDMI audio driver
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  * Written and tested against the Designware HDMI Tx found in iMX6.
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  */
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@@ -66,10 +63,6 @@
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 	HDMI_REVISION_ID = 0x0001,
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 	HDMI_IH_AHBDMAAUD_STAT0 = 0x0109,
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 	HDMI_IH_MUTE_AHBDMAAUD_STAT0 = 0x0189,
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-	HDMI_FC_AUDICONF2 = 0x1027,
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-	HDMI_FC_AUDSCONF = 0x1063,
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-	HDMI_FC_AUDSCONF_LAYOUT1 = 1 << 0,
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-	HDMI_FC_AUDSCONF_LAYOUT0 = 0 << 0,
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 	HDMI_AHB_DMA_CONF0 = 0x3600,
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 	HDMI_AHB_DMA_START = 0x3601,
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 	HDMI_AHB_DMA_STOP = 0x3602,
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@@ -298,7 +291,7 @@
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 	return IRQ_HANDLED;
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 }
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-static struct snd_pcm_hardware dw_hdmi_hw = {
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+static const struct snd_pcm_hardware dw_hdmi_hw = {
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 	.info = SNDRV_PCM_INFO_INTERLEAVED |
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 		SNDRV_PCM_INFO_BLOCK_TRANSFER |
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 		SNDRV_PCM_INFO_MMAP |
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@@ -327,13 +320,17 @@
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 	struct snd_pcm_runtime *runtime = substream->runtime;
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 	struct snd_dw_hdmi *dw = substream->private_data;
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 	void __iomem *base = dw->data.base;
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+	u8 *eld;
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 	int ret;
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 	runtime->hw = dw_hdmi_hw;
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-	ret = snd_pcm_hw_constraint_eld(runtime, dw->data.eld);
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-	if (ret < 0)
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-		return ret;
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+	eld = dw->data.get_eld(dw->data.hdmi);
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+	if (eld) {
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+		ret = snd_pcm_hw_constraint_eld(runtime, eld);
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+		if (ret < 0)
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+			return ret;
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+	}
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 	ret = snd_pcm_limit_hw_rates(runtime);
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 	if (ret < 0)
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@@ -406,7 +403,7 @@
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 {
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 	struct snd_pcm_runtime *runtime = substream->runtime;
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 	struct snd_dw_hdmi *dw = substream->private_data;
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-	u8 threshold, conf0, conf1, layout, ca;
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+	u8 threshold, conf0, conf1, ca;
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 	/* Setup as per 3.0.5 FSL 4.1.0 BSP */
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 	switch (dw->revision) {
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@@ -437,20 +434,12 @@
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 	conf1 = default_hdmi_channel_config[runtime->channels - 2].conf1;
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 	ca = default_hdmi_channel_config[runtime->channels - 2].ca;
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-	/*
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-	 * For >2 channel PCM audio, we need to select layout 1
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-	 * and set an appropriate channel map.
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-	 */
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-	if (runtime->channels > 2)
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-		layout = HDMI_FC_AUDSCONF_LAYOUT1;
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-	else
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-		layout = HDMI_FC_AUDSCONF_LAYOUT0;
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-
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 	writeb_relaxed(threshold, dw->data.base + HDMI_AHB_DMA_THRSLD);
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 	writeb_relaxed(conf0, dw->data.base + HDMI_AHB_DMA_CONF0);
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 	writeb_relaxed(conf1, dw->data.base + HDMI_AHB_DMA_CONF1);
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-	writeb_relaxed(layout, dw->data.base + HDMI_FC_AUDSCONF);
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-	writeb_relaxed(ca, dw->data.base + HDMI_FC_AUDICONF2);
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+
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+	dw_hdmi_set_channel_count(dw->data.hdmi, runtime->channels);
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+	dw_hdmi_set_channel_allocation(dw->data.hdmi, ca);
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 	switch (runtime->format) {
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 	case SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE:
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@@ -614,7 +603,6 @@
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 	struct snd_dw_hdmi *dw = dev_get_drvdata(dev);
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 	snd_power_change_state(dw->card, SNDRV_CTL_POWER_D3cold);
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-	snd_pcm_suspend_all(dw->pcm);
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 	return 0;
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 }
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@@ -646,7 +634,7 @@
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 module_platform_driver(snd_dw_hdmi_driver);
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-MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
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+MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
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 MODULE_DESCRIPTION("Synopsis Designware HDMI AHB ALSA interface");
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 MODULE_LICENSE("GPL v2");
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 MODULE_ALIAS("platform:" DRIVER_NAME);